JP7567530B2 - Refrigeration units and air conditioners - Google Patents

Description

The present invention relates to a cooling unit and an air conditioner.

An evaporative cooling type air conditioner is known that draws in indoor air, uses the heat of vaporization of water to lower the ambient temperature, and blows the cooled air into the room (for example, Patent Document 1). The air conditioner (cooling fan) of Patent Document 1 includes a blowing means arranged in a casing, a first flow path that connects the intake port and the first outlet and guides the airflow generated by the blowing means to the first outlet, a second flow path that connects the intake port and the second outlet and guides the airflow generated by the blowing means to the second outlet, and an evaporation means arranged in the second flow path that cools the air flowing in the second flow path by the heat of vaporization of water, and a heat exchanger is provided to exchange heat between the airflow cooled by the evaporation means in the second flow path and the airflow flowing in the first flow path. In the second flow path provided with the evaporation means, the mist water (unevaporated sprayed water) sprayed by the evaporation means and the air whose absolute humidity has increased due to the evaporated water (evaporated sprayed water) flow downstream of the evaporation means. This air with increased humidity is blown out as exhaust air from the second outlet, which is the outlet of the second flow path. The air flowing through the first flow path, cooled through the heat exchanger, is blown out as supply air from the first outlet into the conditioned space.

In the air conditioner of Patent Document 1, the air flowing through the second flow path blown by the blowing means passes through multiple tubes of the sensible heat exchanger, and the air flowing through the first flow path blown by the blowing means passes around the multiple tubes, thereby exchanging heat between the air flowing through the second flow path and the air flowing through the first flow path.

JP 2014-092338 A

However, the air conditioner in Patent Document 1 does not take into consideration the efficient replacement of the evaporation filter included in the evaporation means.

The invention was made in light of these circumstances, and aims to provide a cooling unit and air conditioner that allows for efficient replacement of the evaporative filter.

A cooling unit according to one aspect of the present disclosure is a cooling unit used in an air conditioner that cools a conditioned space, and includes an evaporative filter that is removably attached and cools the air passing through it using the latent heat of water, the evaporative filter including a rectangular filter element through which water penetrates from above and a rectangular plate member provided on a side of the filter element, and the lower end of the filter element protrudes below the lower edge of the surface of the plate member that faces the filter element.

In this embodiment, the vaporization filter that cools the air passing through it by the latent heat of water includes a filter element through which water penetrates from above, and a rectangular plate member provided on the side of the filter element. By providing the plate member on the side of the filter element, the hard plate member maintains the shape of the filter element, which is softer than the plate member, or suppresses deformation of the shape, making it easy to attach and detach the vaporization filter to and from the cooling unit (unit body). The lower end of the filter element protrudes downward from the lower end of the plate member provided on the side of the filter element, more specifically, from the lower edge of the surface of the plate member that faces the filter element. The surface of the plate member that faces the filter element corresponds to the surface (contact surface) that is in close contact with the side of the filter element. In the height direction, which is the water penetration direction, the filter element is longer than the length of the contact surface (surface facing the filter element) of the plate member. With this configuration, the filter element can be made larger, the amount of water that penetrates the filter element can be increased, and the vaporization efficiency can be improved. Furthermore, the lower end of the filter element, which protrudes below the plate member, covers the drain pan that receives the water that drips down without being vaporized by the vaporization filter, preventing the water in the drain pan from splashing out.

In a cooling unit according to one aspect of the present disclosure, the evaporative filter includes a plurality of core members that penetrate the filter element, and the ends of the core members are joined to the plate member.

In this embodiment, the multiple core members that penetrate the filter element are joined to the surface (contact surface) of the plate member that is in close contact with the side surface of the filter element. The core members maintain the shape of the relatively soft filter element or prevent the shape from deforming, making it easy to attach and detach the vaporization filter to and from the unit body.

In a cooling unit according to one aspect of the present disclosure, the filter element has a notch formed by cutting out a corner on the side on which the plate member is provided, and the longitudinal length of the side on which the plate member is provided is smaller than the longitudinal length of the side on which the plate member is not provided.

In this embodiment, the filter element is provided with a cutout portion, so that the longitudinal length of the side on which the plate member is provided is smaller than the longitudinal length of the side on which the plate member is not provided. Therefore, when removing the vaporization filter attached to the unit body, the vaporization filter can be pulled out from the side whose longitudinal length has been reduced by the cutout portion when pulling out the vaporization filter with the plate member facing forward, making it easier to remove the vaporization filter and improving its ease of attachment and detachment.

In a cooling unit according to one aspect of the present disclosure, the plate member is provided with a gripping portion that is gripped when attaching or detaching the plate member.

In this embodiment, the plate member is provided with a gripping portion that is gripped when attaching or detaching the plate member, and the gripping portion protrudes from the surface (front surface) of the plate member opposite the surface (contact surface) that is in contact with the side surface of the filter element. When removing the vaporization filter attached to the unit body, the plate member is positioned at the front side, and the gripping portion is used to pull out the vaporization filter, making it easier to remove the vaporization filter and improving the ease of attachment and detachment.

A cooling unit according to one aspect of the present disclosure includes a mounting portion in which the vaporization filter is mounted, the mounting portion is formed with a rectangular insertion hole into which the vaporization filter is inserted, and the longitudinal length of the side of the filter element on which the plate member is not provided is greater than the longitudinal length of the insertion hole.

In this aspect, when the vaporization filter is attached to the attachment portion provided on the unit body, the vaporization filter is inserted into the insertion hole formed in the attachment portion with the plate member facing forward.
The longitudinal length of the side surface on which the plate member is not provided is made larger than the longitudinal length of the insertion hole, but since the relatively soft filter element is allowed to deform, the vaporization filter can be easily inserted into the insertion hole. The filter element of the vaporization filter inserted through the insertion hole and attached to the mounting part returns to its original shape, so that the longitudinal length of the side surface on which the plate member is not provided becomes larger than the longitudinal length of the insertion hole. This makes it possible to increase the flow path cross-sectional area of the filter element through which air passes, thereby improving the vaporization efficiency. In addition, since the longitudinal length of the insertion hole is smaller than the longitudinal length of the side surface of the filter element on which the plate member is not provided, it is possible to suppress the outflow of water that has not been vaporized by the vaporization filter and has dripped from the insertion hole.

In a cooling unit according to one aspect of the present disclosure, the plate member is provided with a flange portion that protrudes from the outer edge of the plate member, and the insertion hole is closed by the flange portion.

In this embodiment, the insertion hole is blocked by the flange portion that protrudes from the outer edge of the plate member, preventing air from escaping from the insertion hole.

In a cooling unit according to one aspect of the present disclosure, a frame-shaped seal member is provided on the surface of the flange portion facing the insertion hole.

In this embodiment, a seal member (frame-shaped seal member) that forms a frame along the flange portion is provided on the surface of the flange portion facing the insertion hole, so that the seal member (frame-shaped seal member) is pressed by the flange portion and the portion of the mounting portion that is located on the periphery of the insertion hole, further preventing air from leaking out from the insertion hole.

In a cooling unit according to one aspect of the present disclosure, the mounting portion includes a holding portion that holds the bottom of the vaporization filter, and the holding portion is provided with a plate-shaped dust filter that collects dust adhering to the filter element, and a gap is formed between the dust filter and the bottom surface of the filter element.

In this embodiment, a gap is formed between the dust filter and the bottom surface of the filter element, so when the vaporization filter is pulled out from the mounting portion, the vaporization filter attached to the unit body can be removed without coming into contact with the dust captured by the dust filter.

In a cooling unit according to one aspect of the present disclosure, the mounting portion includes a holding portion that holds the bottom of the vaporization filter, and the holding portion is provided with a plate-shaped dust filter that collects dust adhering to the filter element, and the dust filter and the bottom surface of the filter element are in contact with each other.

In this embodiment, the dust filter and the bottom surface of the filter element are in contact with each other, so that when air passes through the evaporation filter, it is possible to prevent the air from bypassing the filter element.

In a cooling unit according to one aspect of the present disclosure, the mounting portion includes a holding portion that holds the bottom of the vaporization filter, and the holding portion is provided with a plate-shaped dust filter that collects dust adhering to the filter element, and the bottom of the filter element is deflected by elastic contact between the dust filter and the bottom surface of the filter element.

In this embodiment, the dust filter and the bottom surface of the filter element are in elastic contact, and the vaporization filter is attached to the attachment part of the unit body in a state where the bottom of the filter element is bent. This further prevents air from bypassing the filter element when it passes through the vaporization filter.

In a cooling unit according to one aspect of the present disclosure, the vaporization filter includes a first vaporization filter that cools the first air blown into the conditioned space using the latent heat of water, and a second vaporization filter that cools the second air that exchanges sensible heat with the first air using the latent heat of water, and the first vaporization filter and the second vaporization filter are arranged in an L-shape.

In this embodiment, the vaporization filter is composed of two vaporization filters, a first vaporization filter and a second vaporization filter, so that the cooling capacity can be improved. These first vaporization filter and second vaporization filter are attached in an L-shape by the main unit, so that the storage capacity can be improved and the housing of the air conditioner that stores the main unit (cooling unit) can be made smaller.

A cooling unit according to one aspect of the present disclosure includes a fixing member for fixing the first vaporization filter and the second vaporization filter, and the fixing member includes a first pressing portion for pressing and fixing the plate member of the first vaporization filter, and a second pressing portion for pressing and fixing the plate member of the second vaporization filter.

In this embodiment, the fixing member of the cooling unit includes a first pressing portion that presses and fixes the plate member of the first vaporization filter, and a second pressing portion that presses and fixes the plate member of the second vaporization filter, so that the first vaporization filter and the second vaporization filter attached to the unit body can be efficiently fixed by a single fixing member.

An air conditioner according to one aspect of the present disclosure is an air conditioner including a cooling unit according to one aspect of the present disclosure and a housing that houses the cooling unit, in which the first vaporization filter and the second vaporization filter are attached to the cooling unit with their respective plate members adjacent to each other, and in the housing, a door portion that closes an inspection hole is provided on the side of the first vaporization filter and the second vaporization filter on which the plate members are provided, and the first vaporization filter and the second vaporization filter are provided on the housing so as to be freely attached and detached through the inspection hole.

In this embodiment, the plate members of the first and second vaporization filters, which are attached in an L-shape, are located at the corners of the L-shape, and the plate members of the first and second vaporization filters are adjacent to each other, and these vaporization filters are attached to the unit body. In the housing that houses the cooling unit, inspection holes are formed on the side where the plate members of the first and second vaporization filters are provided, and the inspection holes are closed by the door when the air conditioner is in operation. The first and second vaporization filters are configured to be freely attached and detached to the inside and outside of the housing via the inspection holes, so that during maintenance work on the air conditioner, the door can be opened to communicate between the inside and outside of the housing via the inspection holes, improving the efficiency of maintenance work, including replacing the first and second vaporization filters.

In an air conditioner according to one aspect of the present disclosure, the direction of movement when the first vaporization filter is attached to or detached from the housing intersects with the direction of movement when the second vaporization filter is attached to or detached from the housing.

In this embodiment, since the first vaporization filter and the second vaporization filter are attached in an L-shape, the direction of movement of the first vaporization filter when it is attached and detached inside and outside the housing intersects with the direction of movement of the second vaporization filter when it is attached and detached inside and outside the housing. By intersecting the directions of movement of the first vaporization filter and the second vaporization filter in this way, a part of the spatial area can be overlapped between the movement space of the first vaporization filter for attaching and detaching these vaporization filters and the movement space of the second vaporization filter, thereby preventing the size of the inspection hole from becoming large. In other words, when attaching and detaching these vaporization filters, the inspection hole is shared by the first vaporization filter and the second vaporization filter, but by intersecting the movement directions of each, the angle (entrance angle) of the movement direction with respect to the inspection hole can be made different from each other, so the size of the inspection hole can be reduced and the rigidity of the housing can be improved.

It is possible to provide a cooling unit and air conditioner that allows efficient replacement of the evaporative filter.

FIG. 2 is a schematic front view illustrating one configuration of the air conditioner according to the first embodiment. FIG. 2 is a perspective view illustrating an example of the appearance of an air conditioner. 3A to 3C are schematic plan views illustrating examples of arrangement of sensible heat exchangers. FIG. 2 is a schematic perspective view illustrating one configuration of a cooling unit. FIG. 2 is a schematic perspective view illustrating one configuration of a vaporization filter (a first vaporization filter and a second vaporization filter). FIG. 2 is a schematic side view illustrating one configuration of a vaporization filter (a first vaporization filter and a second vaporization filter). 11 is a schematic perspective view illustrating one configuration of a mounting portion of a unit main body. FIG. 11 is a schematic side view illustrating one configuration in which a vaporization filter (a first vaporization filter, a second vaporization filter) is attached to the attachment portion of the unit body. FIG. 11 is a schematic perspective view illustrating one configuration of a fixing member (front side). FIG. 13 is a schematic perspective view illustrating one configuration of a fixing member (rear side). FIG. FIG. 11 is an explanatory diagram illustrating a state in which a fixing member is provided. FIG. 11 is an explanatory diagram illustrating a state in which a fixing member is removed. 10 is an explanatory diagram for explaining a moving direction when attaching and detaching a vaporization filter (a first vaporization filter, a second vaporization filter). FIG. 11 is a schematic side view illustrating one configuration of a vaporization filter (first vaporization filter, second vaporization filter) according to embodiment 2. FIG. 11 is a schematic side view illustrating one configuration in which a vaporization filter (a first vaporization filter, a second vaporization filter) is attached to the attachment portion of the unit body. FIG.

(Embodiment 1)
Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a schematic front view illustrating one configuration of an air conditioner 1 according to the first embodiment. FIG. 2 is a perspective view illustrating the appearance of the air conditioner 1. FIG. 1 is a schematic view of a cross section cut along line A-A in FIG. 2, from above. The air conditioner 1 includes a box-shaped housing 11 and a tank 12 configured separately from the housing 11 (main body), and is mounted on a moving body such as a vehicle, for example, and cools the space around an operator of the moving body as a conditioned space. Alternatively, the air conditioner 1 may be mounted indoors, such as a factory. The mounted state of the air conditioner 1 shown in FIG. 1 (viewed from the front, from above) is shown in the front, back, left and right directions as the normal usage mode of the air conditioner 1. The mounted state of the air conditioner 1 shown in FIG. 2 is shown in the up and down directions and the front, back, left and right directions as the normal usage mode of the air conditioner 1.

The air conditioner 1 is equipped with a tank 12 for storing water, and a cooling unit 3 including two evaporation filters consisting of a first evaporation filter 31 and a second evaporation filter 32. The air conditioner 1 uses the heat of evaporation of water supplied from the tank 12 to lower the ambient temperature and cool the conditioned space, for example, by using the first evaporation filter 31 and the second evaporation filter 32, and is an evaporative cooling type air conditioner.

The cooling unit 3 includes a first vaporization filter 31 and a second vaporization filter 32, a unit body 300 to which these vaporization filters (first vaporization filter 31 and second vaporization filter 32) are detachably attached, a water supply section 33, and a drain pan 34. Details of the unit body 300 will be described later. The water supply section 33 is provided above the first vaporization filter 31 and the second vaporization filter 32, and supplies water to the first vaporization filter 31 and the second vaporization filter 32 below. The drain pan 34 receives water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32. Details of the cooling unit 3 will be described later.

The air conditioner 1 further includes a sensible heat exchanger 4, which cools the first air by exchanging heat between the second air that has passed through the second vaporization filter 32 and the first air before passing through the first vaporization filter 31, and cools the first air in two stages by passing the cooled first air through the first vaporization filter 31. The first air is cooled by sensible heat exchange without increasing the humidity, and then evaporatively cooled, so that the first air that has been cooled in two stages is blown into the conditioned space as supply air (SA: Service Air). The second air is discharged to the outside of the housing 11 as exhaust air (EA: Exhaust Air).

The housing 11 of the air conditioner 1 is provided with two intake ports 5 for drawing in air from the conditioned space, a first outlet 71 for blowing out the first air that has passed through the sensible heat exchanger 4 and the first vaporization filter 31 and been cooled in two stages into the conditioned space as supply air, and a second outlet 72 for blowing out the second air that has passed through the second vaporization filter 32 and the sensible heat exchanger 4 and has been subjected to sensible heat exchange with the first air as exhaust air. The first outlet 71 and the second outlet 72 are provided on the same side of the housing 11 (the left side in this embodiment).

The air conditioner 1 is equipped with fans for transporting the first air and the second air, and the fans include a first fan 81 that transports the first air and a second fan 82 that transports the second air. The shapes of the first fan 81 and the second fan 82 in FIG. 1 represent an example of an outer shell shape. The fans including the first fan 81 and the second fan 82 may be, for example, a centrifugal fan such as a sirocco fan or a propeller fan. The first fan 81 is provided near the first outlet 71, and the second fan 82 is provided near the second outlet 72. That is, when the two suction ports 5 are the most upstream ends and the first outlet 71 and the second outlet 72 are the most downstream ends of the air flow of the air conditioner 1, the first fan 81 and the second fan 82 are provided downstream of the sensible heat exchanger 4 and the cooling unit 3 in the air flow direction. By providing the first fan 81 and the second fan 82 downstream, these fans function as so-called suction fans and maintain a negative pressure in the air flow path in the air conditioner 1. A configuration is adopted in which the air flow path is maintained at a negative pressure to promote the penetration (absorption) of water from the water supply section 33 into the first vaporization filter 31 and the second vaporization filter 32. In this embodiment, a configuration is adopted in which the dripping of water from the water supply section 33 into the first vaporization filter 31 and the second vaporization filter 32 is promoted as described below.

The first fan 81 and the second fan 82 share a single fan motor 8 and are fastened to shafts provided at both ends of the fan motor 8. A partition plate 83 is provided between the second fan 82 and the first fan 81, separating the space in which the second fan 82 is provided from the space in which the first fan 81 is provided. The partition plate 83 can prevent the first air transported by the first fan 81 and the second air transported by the second fan 82 from mixing.

The fan motor 8, the first fan 81, and the second fan 82 are arranged in a fan chamber partitioned by a fan casing 84. The fan chamber is partitioned by the fan casing 84, part of which is made of a heat-transfer suppressing material having insulating properties, such as polystyrene foam. A partition plate 83 provided between the second fan 82 and the first fan 81 constitutes part of the fan casing 84.

The air conditioner 1 is provided with an intake passage 51, a branch passage 52, a first passage 61, and a second passage 62 as air circulation paths. The branch passage 52 branches the intake passage 51 into the first passage 61 and the second passage 62. The intake passage 51 starts from two intake ports 5 in the rear direction and the right direction, and is connected to the sensible heat exchanger 4 via the branch passage 52. The first passage 61 is a space that communicates along the arrow representing the supply air (SA) in FIG. 1. The second passage 62 is a space that communicates along the arrow representing the exhaust air (EA) in FIG. 1. The intake passage 51 and the branch passage 52 are a common area before the air is distributed to the first passage 61 and the second passage 62. In other words, the air inside the intake passage 51 and the branch passage 52 is both the first air and the second air.

The branch flow passage 52 is connected to two inlets of the sensible heat exchanger 4. The two inlets of the sensible heat exchanger 4 include an inlet of a first path 41 of the sensible heat exchanger 4 into which the first air flows, and an inlet of a second path 42 of the sensible heat exchanger 4 into which the second air flows. The inlet of the first path 41 is formed on the first inlet side opening surface 431. The inlet of the second path 42 is formed on the second inlet side opening surface 432. The first path 41 constitutes a part of the first flow passage 61. The second path 42 constitutes a part of the second flow passage 62. That is, the branch flow passage 52 and the sensible heat exchanger 4 are provided in this order downstream of the suction flow passage 51 in the flow direction of the intake air flowing in the suction flow passage 51.

The intake air flows into the inlet of either the first path 41 or the second path 42 of the sensible heat exchanger 4 at the branch flow path 52. That is, the intake air is divided at the branch flow path 52 into the first air that flows into the first path 41 and the second air that flows into the second path 42.

A dust collection filter 53 is interposed between the two suction ports 5 and the two inlets (the inlet of the first path 41 and the inlet of the second path 42) of the sensible heat exchanger 4. The dust collection filter 53 is made of polyester or olefin-based fibers and includes a filter section that captures dust and a lattice-shaped frame body that fixes the filter section. The dust collection filter 53 may be formed by insert molding in which the filter section is placed inside a resin mold and then a resin that is the material for the frame body is poured in. The dust collection filter 53, which is made of a resin frame body, is flexible and is curved to cover the inlets of the first path 41 and the second path 42 of the sensible heat exchanger 4. When the dust collection filter 53 is curved, a guide section formed of a groove or the like into which the longitudinal edge of the dust collection filter 53 fits may be provided on the inner surface of the housing 11.

The dust collection filter 53 is curved as shown in FIG. 1 because the first inlet side opening surface 431 and the second inlet side opening surface 432 are provided on different end faces (side surfaces) of the sensible heat exchanger 4. This allows the dust collection filter 53 to cover the first inlet side opening surface 431 and the second inlet side opening surface 432 with a single sheet. By using a single sheet of dust collection filter 53, the effort required to attach and remove the dust collection filter 53 is reduced, and the labor required for maintenance work can be reduced.

A seal member 531 is provided at each end of the dust collection filter 53. The ends of the dust collection filter 53 include an end on the first path 41 side and an end on the second path 42 side. The end on the first path 41 side is located at a contact point between the first inlet side opening surface 431, where the inlet of the first path 41 is provided, and the inner surface of the housing 11 facing the first inlet side opening surface 431. The end on the second path 42 side is located between the drain pan 34 described later and the inner surface of the housing 11 adjacent to the drain pan 34. The seal member 531 fills the gap between the inner surface of the housing 11 and the dust collection filter 53.

The space between the two inlets (the inlet of the first path 41 and the inlet of the second path 42) of the sensible heat exchanger 4 and the suction port 5 is divided by the dust collection filter 53 into an upstream space and a downstream space in the flow direction of the first air and the second air. In other words, the dust collection filter 53 divides the space into an upstream space surrounded by the housing 11 having the suction port 5 and the dust collection filter 53, and a downstream space surrounded by the dust collection filter 53, the first inlet side opening surface 431, and the second inlet side opening surface 432. The upstream space corresponds to the suction flow path 51. The downstream space corresponds to the branch flow path 52. The suction flow path 51 is a path shared by the first path 41 and the second path 42 upstream of the branch flow path 52. Therefore, the two suction ports 5 can also be shared by the first path 41 and the second path 42, and the opening area of the two suction ports 5 can be increased to reduce the flow path resistance (pressure loss) in the suction air. In addition, to reduce flow resistance, a configuration in which two suction ports are connected may be adopted. Specifically, the side of the housing 11 may be curved in the same way as the dust collection filter 53, and one suction port 5 may be formed on the curved side to increase the opening area. In this case, the volume of the upstream space can be minimized, and the effects of turbulence that may occur in the upstream space can be minimized.

As described above, the sensible heat exchanger 4 is provided with a first path 41 through which the first air flows and a second path 42 through which the second air flows. The first path 41 constitutes a part of the first flow path 61 that is connected to the first air outlet 71. The second path 42 constitutes a part of the second flow path 62 that is connected to the second air outlet 72. The first path 41 and the second path 42 in the sensible heat exchanger 4 are formed by a plurality of resin plates having a hollow structure, and are formed by arranging each of these resin plates in parallel. By reducing the plate thickness of the resin plates, it is possible to improve the heat transfer and reduce the weight of the sensible heat exchanger 4. The hollow structure may be formed by a metal plate.

The resin plates constituting the first path 41 and the resin plates constituting the second path 42 are stacked perpendicular to the flow direction of the first air and the second air, and sensible heat exchange between the first air and the second air is performed through these resin plates. The first path 41 and the second path 42 are perpendicular to each other, so that a cross flow is formed by the first air flowing through the first path 41 and the second air flowing through the second path 42.

The inlet of the first path 41, the inlet of the second path 42, the outlet of the first path 41, and the outlet of the second path 42 are provided on each end face (side face) of the sensible heat exchanger 4. The end face (side face) on which the inlet of the first path 41 is provided corresponds to the first inlet side opening face 431. The end face (side face) on which the inlet of the second path 42 is provided corresponds to the second inlet side opening face 432. The end face (side face) on which the outlet of the first path 41 is provided corresponds to the first outlet side opening face 441. The end face (side face) on which the outlet of the second path 42 is provided corresponds to the second outlet side opening face 442. In other words, the first path 41 is formed by stacking a plurality of spaces that are connected from the first inlet side opening face 431 to the first outlet side opening face 441. The second path 42 is formed by stacking a plurality of spaces that are connected from the second inlet side opening face 432 to the second outlet side opening face 442.

In the flow direction of the second air, a second vaporization filter 32 is provided upstream of the second inlet side opening surface 432. The second vaporization filter 32, which has a rectangular shape when viewed from the front in FIG. 1, is provided with one surface facing the second inlet side opening surface 432. In the flow direction of the first air, a first vaporization filter 31 is provided downstream of the first outlet side opening surface 441. The first vaporization filter 31, which has a rectangular shape when viewed from the front in FIG. 1, is provided with one surface facing the first outlet side opening surface 441.

The second air diverted at the branch flow path 52 passes through the second vaporization filter 32 and is cooled by the second vaporization filter 32, and then flows into the inside of the sensible heat exchanger 4 (second path 42) from the inlet of the second path 42 provided at the second inlet side opening surface 432. The first air diverted at the branch flow path 52 flows into the inside of the sensible heat exchanger 4 (first path 41) from the inlet of the first path 41 provided at the first inlet side opening surface 431.

The first air flowing through the first path 41 and the second air flowing through the second path 42 exchange heat through the sensible heat exchanger 4. The second air flowing through the second path 42 is cooled by the second vaporization filter 32, and the temperature of the second air is lower than the temperature of the intake air immediately after it is sucked in through the intake port 5. The temperature of the first air immediately after it flows into the inlet of the first path 41 is the same (equivalent) as the temperature of the intake air immediately after it is sucked in through the intake port 5, but it is cooled by the second air flowing through the second path 42 via the sensible heat exchanger 4. Specifically, since the temperature of the first air is higher than that of the second air, heat is absorbed by the second air. As a result, the first air and the second air are in a lower temperature state than the intake air and the air outside the housing 11.

The first air flowing out from the outlet of the first path 41 is further cooled by the first vaporization filter 31. As a result, the first air is cooled in two stages. That is, the first air is cooled by two cold sources, using the second air of the second vaporization filter 32 as an indirect cold source via the second air, and the first vaporization filter 31 as a direct cold source. That is, only sensible heat is exchanged in the first stage, and total heat exchange is performed in the second stage. This results in a lower wet-bulb temperature than cooling by evaporation or sensible heat exchange only and cooling by sensible heat exchange from evaporation cooling. In addition, the amount of water evaporated during total heat exchange can be reduced, preventing an unpleasant increase in humidity.

The first air that flows out from the outlet (the outlet provided on the first outlet side opening surface 441) of the first path 41 of the sensible heat exchanger 4 and passes through the first vaporization filter 31 is transported by the first fan 81 located downstream of the first vaporization filter 31 and is blown out as supply air (SA) from the first blowing outlet 71 to the conditioned space. The first blowing outlet 71 is provided with a blowing duct 711, for example, configured with a bellows structure, and the first air may be blown out as supply air (SA) in the blowing direction adjusted by the blowing duct 711. This allows the space around the operator of the moving body to be cooled as the conditioned space. Although the first fan 81 is located downstream of the first vaporization filter 31, this is not limited thereto, and the first fan 81 may be located upstream of the first vaporization filter 31.

The second air flowing out from the outlet of the second path 42 of the sensible heat exchanger 4 (the outlet provided on the second outlet side opening surface 442) is transported by the second fan 82 located downstream of the outlet of the second path 42 of the sensible heat exchanger 4, and is blown out of the housing 11 from the second blowing outlet 72 as exhaust air (EA).

The first air outlet 71 and the second air outlet 72 are provided on the same side of the housing 11 (the left side in this embodiment). The second air outlet 72 faces the direction of the first air outlet 71, and the exhaust air (EA) blown out from the second air outlet 72 may be blown out near the periphery of the air outlet 711 attached to the first air outlet 71. More specifically, the second air outlet 72 is provided forward of the second fan 82, so that the second air sent from the second fan 82 is blown out in the left front direction. In addition, if the air outlet 711 is present, the rise in the external surface temperature of the air outlet 711 due to direct sunlight or lighting can be suppressed.

As shown in the drawings in this embodiment, the side of the housing 11 on which the two suction ports 5, the first outlet 71, and the second outlet 72 are not provided is provided with a door section 111 that is configured to be freely opened and closed. The side on which the door section 111 is provided is the side corresponding to the location where the end of the first vaporization filter 31 and the end of the second vaporization filter 32 are adjacent to each other, and is the side closest to the first vaporization filter 31 and the second vaporization filter 32. By opening (putting the door section 111 in an open state), the inside of the housing 11 can be accessed from the outside, and maintenance work such as replacing the first vaporization filter 31 or the second vaporization filter 32 can be performed. The door section 111 is preferably fixed to the housing 11 in such a configuration that one end other than the upper end is connected to the housing 11 by a hinge, and the end opposite to the end connected by the hinge of the door section 111 is fixed to the housing 11 by a locking mechanism that can be opened and closed. This prevents the door 111 from falling off when opened, and makes it easy to maintain the open state during maintenance. At the locations where the ends of the first vaporization filter 31 and the second vaporization filter 32 are adjacent to each other, fixing members 38 are provided to abut against these ends and fix the first vaporization filter 31 and the second vaporization filter 32 by pressing these ends when the door 111 is closed. The relative positions of the door 111, fixing members 38, and vaporization filters (the first vaporization filter 31 and the second vaporization filter 32), including maintenance work such as replacing the first vaporization filter 31 and the second vaporization filter 32, will be described later.

When carrying out the maintenance work, after opening the door 111, the first vaporization filter 31 and the second vaporization filter 32 can be slid horizontally to be removable, and the height of the housing 11, i.e., the height of the product, can be reduced, thereby improving maintainability.
Only one side of the first vaporization filter 31 and the second vaporization filter 32 is integrally molded with a plate member 36 (see FIG. 5) made of a resin material or the like. This improves the maintainability of the first vaporization filter 31 and the second vaporization filter 32, while suppressing wind leakage from the element parts of the first vaporization filter 31 and the second vaporization filter 32, i.e., preventing air from flowing without passing through the element parts.
A resin member (plate member 36) integrally molded on one side of the first vaporization filter 31 and the second vaporization filter 32 is provided with a handle or grip 361. When performing maintenance work, an operator can easily attach and detach the first vaporization filter 31 and the second vaporization filter 32 by holding the handle, thereby improving maintainability.
The two vaporization filters, consisting of the first vaporization filter 31 and the second vaporization filter 32, may be pulled out in a crossed relationship. By adopting such a configuration, it is possible to standardize parts and reduce costs by reducing the cost of parts. In addition, the first vaporization filter 31 and the second vaporization filter 32 can be pulled out from the inspection hatch space that is limited depending on the size of the housing 11, and the size of the housing 11, i.e., the product size, can be reduced.
In order to prevent the two vaporization filters consisting of the first vaporization filter 31 and the second vaporization filter 32 from moving, fixing parts such as a pressing part for fixing these vaporization filters are provided, and the pressing part (fixing part) presses against a part of the door part 111 to press the door part 111. With this configuration, it is possible to suppress leakage of the first air and the second air, i.e., mixing of the first air and the second air. Furthermore, it is possible to suppress the occurrence of displacement of the vaporization filter due to vibration, etc. Furthermore, it is possible to prevent the vaporization filter from being installed incorrectly when removing and attaching the vaporization filter during maintenance work, etc.

The inner surface of the door portion 111 may be provided with a suppression member for suppressing air from entering the first flow path 61 without passing through the first vaporization filter 31. The suppression member is formed, for example, from a sealing material, and by closing the door portion 111 (closed state), the suppression member is sandwiched between the inner surface of the door portion 111 and the edge of the first vaporization filter 31 or the end face of the fixing member 38 to exert a sealing function, and it is possible to suppress air from entering the first flow path 61 without passing through the first vaporization filter 31.

The air conditioner 1 is provided with a tank 12 that stores water to be supplied to the first vaporization filter 31 and the second vaporization filter 32. The tank 12 is configured as a separate body from the housing 11 that houses the first vaporization filter 31, the second vaporization filter 32, etc. The housing 11, which is the main body of the air conditioner 1, and the tank 12, which is configured as a separate body, are connected (communicated) by a supply water channel 91 and a recovery water channel 92. Water supplied from the tank 12 to the first vaporization filter 31 and the second vaporization filter 32 stored in the housing 11 flows through the supply water channel 91. Water that is not vaporized in the first vaporization filter 31 and the second vaporization filter 32 flows through the recovery water channel 92 and is recovered in the tank 12. The supply water channel 91 and the recovery water channel 92 are configured by hoses made of soft resin or piping made of hard resin. When installed on a mobile body as in this embodiment, the tank 12 is preferably installed on the back or feet of the operator, where water can be easily supplied and replaced. In addition, it is preferable to tie the supply water channel 91 and the recovery water channel 92 to a head guard pillar or the like to ensure visibility for the operator and to prevent leakage if they get caught during operation.

The supply water channel 91 is provided with a water supply pump 913 and a water supply sensor. When the housing 11 and the tank 12 are placed in different locations and a difference in height (head) occurs between the housing 11 and the tank 12, water can be pumped from the tank 12 below to the housing 11 above by the water supply pump 913, which has a water supply capacity corresponding to the head. The water supply sensor is provided, for example, inside the supply water channel 91, and outputs a sensor value (detection value) corresponding to the amount of water flowing in the supply water channel 91.

A part of the supply water passage 91 extending from the tank 12 is housed inside the housing 11 and communicates with the water supply section 33 attached above the first vaporization filter 31 and the second vaporization filter 32. A part of the supply water passage 91 housed inside the housing 11 is provided in the upstream space (intake passage 51) separated by the dust collection filter 53. When the air conditioner 1 is mounted on a mobile body and used outdoors, the temperature of the water in the tank 12 may be heated by direct sunlight, etc., and may become higher than the outside air temperature (temperature of the intake air). Even in such a case, the water (supply water) flowing in the supply water passage 91 located in the upstream space (intake passage 51) is heat exchanged with the intake air flowing in the intake passage 51, and the water (supply water) is cooled by the intake air, thereby improving the cooling efficiency of the air conditioner 1. The outer peripheral surface of the supply water passage 91 arranged in the upstream space may be provided with, for example, fins, etc., to increase the heat transfer area during heat exchange with the intake air, thereby improving the heat transfer efficiency. In addition, as a configuration for cooling the water in the supply water passage 91, the supply water passage 91 may be arranged to pass downstream of the sensible heat exchanger 4 of the second flow path 62.

The water (supply water) flowing into the water supply section 33 is divided into the first supply water passage 911 on the first vaporization filter 31 side and the second supply water passage 912 on the second vaporization filter 32 side, passes through the first water supply hole 331 provided in the water supply section 33 and drips onto the first vaporization filter 31, and passes through the second water supply hole 332 and drips onto the second vaporization filter 32. The water that drips onto the first vaporization filter 31 and the second vaporization filter 32 permeates into the first vaporization filter 31 and the second vaporization filter 32, respectively. At this time, the water (supply water) drips sequentially from the first water supply hole 331 and the second water supply hole 332 due to the water pressure from the water supply pump 913, the weight of the water, and the negative pressure inside the first flow path 61 and the second flow path 62.

The water that penetrates the first vaporization filter 31 and the second vaporization filter 32 is vaporized when the first air and the second air pass through, but depending on the amount of water supplied and the relative humidity of the environment in which the air conditioner 1 is used, some of the supplied water flows in liquid form into the drain pan 34 located below the first vaporization filter 31 and the second vaporization filter 32.

As shown in the figure in this embodiment, the water supply pump 913 and the recovery pump 923 are arranged side by side above the sensible heat exchanger 4. The water supply pump 913 is arranged in the supply water passage 91 as in the first embodiment, and in the supply water passage 91, the housing 11 (main body) and the tank 12 (separate body) are connected to each other via, for example, a stop valve (shut-off valve).

The recovery pump 923 and the water supply pump 913 may be mounted side by side above the sensible heat exchanger 4, and these pumps may be accessible by opening the top plate of the housing 11. This improves the efficiency of work such as inspecting or replacing the recovery pump 923 and the water supply pump 913 during maintenance of the air conditioner 1. By mounting the water supply pump 913 and the recovery pump 923 side by side, there is no need to provide mounting space above and below, and the height of the housing 11 can be reduced, resulting in a more compact product.

The water (supply water) pumped up from the tank 12 by the water supply pump 913 is supplied to the water supply section 33 (first water supply section 33A, second water supply section 33B) through the supply water passage 91. The supply water passage 91 between the water supply pump 913 and the first water supply section 33A and the second water supply section 33B is provided with a branch passage that branches into the first supply water passage 911 and the second supply water passage 912. The branch passage may be located above the sensible heat exchanger 4. The first supply water passage 911 and the second supply water passage 912 branched by the branch passage formed in the supply water passage 91 are connected to the first water supply section 33A and the second water supply section 33B. That is, the first supply water passage 911 is connected to the first water supply section 33A, and the second supply water passage 912 is connected to the second water supply section 33B.

Water (supply water) flowing into the first water supply section 33A via the first supply water passage 911 drips onto the first vaporization filter 31 via the first water supply hole 331, as in embodiment 1. Water (supply water) flowing into the second water supply section 33B via the second supply water passage 912 drips onto the second vaporization filter 32 via the second water supply hole 332, as in embodiment 1.

The drain pan 34 and the tank 12 are connected by a recovery water passage 92. A recovery pump 923 is provided in the recovery water passage 92, and the recovery water passage 92 is connected to the housing 11 (main body) and the tank 12 (separate body) via, for example, a stop valve (shut-off valve). Water (recovered water) that flows down into the drain pan 34 is recovered into the tank 12 via the recovery water passage 92.

The water flowing down from the first vaporization filter 31 and the second vaporization filter 32 may be collected in one place in the drain pan 34, merged as the recovery water channel 92, and connected to the recovery pump 923. That is, in the drain pan 34, the first recovery water channel 921 after the first vaporization filter 31 is added and the second recovery water channel 922 after the second vaporization filter 32 is added may be collected (merged) in one place. With this configuration, for example, even if the air conditioner 1 is placed on a moving body and the housing 11 is tilted due to the behavior of the moving body, the water flowing down from the first vaporization filter 31 and the second vaporization filter 32 can be collected in one place in the drain pan 34, that is, in the communication hole communicating with the recovery water channel 92, and the water can be reliably transported by the recovery pump 923. That is, for example, if the drain pan 34 has multiple communication holes, there is a concern that when the housing 11 tilts, air will be drawn in from one of the communication holes by the recovery pump 923, making it impossible to draw water from the other communication holes. However, by collecting the water that has flowed down from the first vaporization filter 31 and the second vaporization filter 32 in one place in the drain pan 34 and transporting it via the recovery water passage 92 by the recovery pump 923, the water can be reliably recovered in the tank 12.

The tank 12 is connected to the first vaporization filter 31 and the second vaporization filter 32 by a supply water passage 91 and a recovery water passage 92. Thus, a circulation circuit is formed in which water is recovered (returned) to the tank 12 via the tank 12, the supply water passage 91, the water supply section 33, the first vaporization filter 31 and the second vaporization filter 32, the drain pan 34, and the recovery water passage 92. This circulation circuit efficiently recovers water that has not been vaporized by the first vaporization filter 31 and the second vaporization filter 32 into the tank 12, reducing the amount of water remaining inside the housing 11 and improving hygiene within the housing 11.

Figure 3 is a schematic plan view illustrating an example of the arrangement of the sensible heat exchanger 4. Some components such as the dust collection filter 53 and the water supply section 33 are omitted from Figure 3. The sensible heat exchanger 4 has a rectangular shape when viewed from the front, and has the appearance of, for example, a rectangular parallelepiped. The first path 41 and the second path 42 provided in the sensible heat exchanger 4 are orthogonal to each other, and in this embodiment, the intersection angle between the first path 41 and the second path 42 is, for example, 90°.

The sensible heat exchanger 4 has end faces (side faces) of a first inlet side opening face 431, a second inlet side opening face 432, a first outlet side opening face 441, and a second outlet side opening face 442, and the angle between the adjacent end faces (side faces) is, for example, 90°. The first inlet side opening face 431, the second inlet side opening face 432, the first outlet side opening face 441, and the second outlet side opening face 442 are arranged in this order in the circumferential direction when the sensible heat exchanger 4 is viewed from the front. That is, the first inlet side opening face 431 is adjacent to the second inlet side opening face 432, the second inlet side opening face 432 is adjacent to the first outlet side opening face 441, the first outlet side opening face 441 is adjacent to the second outlet side opening face 442, and the second outlet side opening face 442 is adjacent to the first inlet side opening face 431.

The sensible heat exchanger 4 is housed in the housing 11 so that the inner surface of the housing 11 and the end face of the sensible heat exchanger 4 facing the inner surface form an acute angle. For the following explanation, the angle between the inner surface of the front side of the housing 11 and the first outlet side opening surface 441 is defined as angle θ. For example, the angle θ forms an acute angle that is greater than 10 degrees and less than 50 degrees. The lower limit value of the angle θ, 10 degrees, may be set to ensure the path diameter of the first flow path 61. The upper limit value of the angle θ may be set by the arrangement of the fan motor 8 and the electric unit 13 provided downstream of the second path 42 and the arrangement of the partition plate 83. Specifically, the angle θ may be set so that the left end of the first outlet side opening surface 441 and the right end of the partition plate 83 are in a positional relationship that allows connection. In order to facilitate the flow of the second air to the fan motor 8 and the electric unit 13, it is preferable to adopt a configuration in which the left end of the first outlet side opening surface 441 and the right end of the partition plate 83 are disposed forward of the rear end of at least one of the fan motor 8 and the electric unit 13, and to set an upper limit value of the angle θ. This facilitates the flow of the second air into the fan motor 8 and the electric unit 13, thereby improving the cooling efficiency of the fan motor 8 and the electric unit 13. The sensible heat exchanger 4 is stored in the housing 11 in a state rotated by an angle θ corresponding to the acute angle from a parallel state (attitude position) in which the angle formed between the inner surface of the housing 11 and the end face of the sensible heat exchanger 4 facing the inner surface is 0 degrees. As a result, for example, since the housing 11 is a rectangular parallelepiped and the sensible heat exchanger 4 is a cube, the angle between the first inlet side opening surface 431 and the inner surface of the rear side of the housing 11 facing the first inlet side opening surface 431 and the angle between the first outlet side opening surface 441 and the inner surface of the front side of the housing 11 facing the first outlet side opening surface 441 are equal in value. By storing the sensible heat exchanger 4 in the housing 11 in a state rotated at a predetermined rotation angle in this way, it is possible to ensure a large heat exchangeable area (heat exchange area) in the sensible heat exchanger 4 relative to the size of the housing 11. In addition, by setting θ to an angle in the range of more than 10 degrees and less than 50 degrees and not 45 degrees, it is possible to reduce the length of the housing 11 in the front-rear and left-right directions compared to when it is installed at 45 degrees. As a result, the length of the housing 11 in the front-rear and left-right directions relative to the heat exchange area can be suppressed, and therefore the housing 11 can be made smaller. Similarly, the first vaporization filter 31 and the second vaporization filter 32 are arranged along the second inlet side opening surface 432 and the first outlet side opening surface 441 of the sensible heat exchanger 4, so that the length of the cooling unit 3 in the left-right direction can be shortened, and the area of the door section 111 provided for maintenance purposes can also be reduced.

By rotating and positioning the housing 11 at an angle θ corresponding to a predetermined acute angle, the surface distance between the first outlet side opening surface 441 and the front inner surface of the housing 11 facing the first outlet side opening surface 441 can be increased stepwise toward the downstream side of the first air. Specifically, as shown in FIG. 3, the surface distance increases stepwise as it approaches the first air outlet 71 (d3>d2>d1). That is, the surface distance between the first outlet side opening surface 441 at the most downstream side and the inner surface of the housing 11 can be maximized. This can reduce the flow resistance (pressure loss) when the first air flows out from the first outlet side opening surface 441. Incidentally, the surface distance between the second inlet side opening surface 432 and the inner surface on the right side of the housing 11 facing the second inlet side opening surface 432 decreases as it moves away from the first outlet side opening surface 441 (k3>k2>k1).

The first vaporization filter 31 facing the first outlet side opening surface 441 and the second vaporization filter 32 facing the second inlet side opening surface 432 are detachably attached to the unit body 300 and arranged in an L-shape. The unit body 300 includes a drain pan 34 provided below, and therefore the first vaporization filter 31 and the second vaporization filter 32 attached to the unit body 300 may be fastened to a casing covering the upper part of the drain pan 34. In this case, the casing covering the upper part of the drain pan 34 functions as a fastening member for fastening the first vaporization filter 31 and the second vaporization filter 32. The angle (β) formed by the first vaporization filter 31 and the second vaporization filter 32 arranged in an L-shape is equal to or greater than the intersection angle (α) of the first path 41 and the second path 42, and is, for example, 60 degrees to 120 degrees. In addition, when the relationship between the angle (β) and the angle (α) is expressed by a formula, taking into consideration the case where the sensible heat exchanger 4 is rhombic, for example, it is preferable that β=α±30 (degrees). By providing the first vaporization filter 31 and the second vaporization filter 32 by bending them into an L-shape, the inside of the L-shape formed by the end faces of the first vaporization filter 31 and the second vaporization filter 32 can be arranged along the corner of the sensible heat exchanger 4. This improves the storability of the first vaporization filter 31 and the second vaporization filter 32, and allows the housing 11 to be made smaller. In FIG. 3, the length of the first outlet side opening surface 441 and the first vaporization filter 31 is slightly shorter in order to make it smaller. However, the length of the first vaporization filter 31 may be changed as appropriate. As an example, it is preferable that the length of the first outlet side opening surface 441 and the first vaporization filter 31 is determined so that the flow path stage area is approximately the same. This reduces the pressure loss caused by the change in the flow path cross-sectional area. In addition, it is preferable that a wall surface (sealing member) that defines a flow path is provided between the first outlet side opening surface 441 and the first vaporization filter 31 so that the first air that has passed through the first outlet side opening surface 441 passes through the first vaporization filter 31. This wall surface may be formed on the casing of the first vaporization filter 31, or on the member that fixes the sensible heat exchanger 4. The second vaporization filter 32 may also be appropriately changed in the same manner as the first vaporization filter 31. The length of the second inlet side opening surface 432 and the second vaporization filter 32 is slightly shorter in order to reduce the size. However, the length of the second vaporization filter 32 may be appropriately changed. As an example, it is preferable that the length of the second outlet side opening surface 442 and the second vaporization filter 32 are determined so that the flow path stage area is approximately the same. This reduces the pressure loss caused by the change in the flow path cross-sectional area. In addition, it is preferable that a wall surface that defines a flow path is formed between the second outlet side opening surface 442 and the second vaporization filter 32 so that the second air that has passed through the second outlet side opening surface 442 passes through the second vaporization filter 32.

Figure 4 is a schematic perspective view illustrating one configuration of the cooling unit. The cooling unit 3 includes a unit body 300, a first vaporization filter 31, a second vaporization filter 32, a drain pan 34, and a water supply section 33, and the water supply section 33 includes a first water supply section 33A and a second water supply section 33B that are configured separately. The first vaporization filter 31 and the second vaporization filter 32 are detachably attached to the unit body 300, and the drain pan 34 is provided below the unit body 300. A fixing member 38 for fixing the first vaporization filter 31 and the second vaporization filter 32 is provided at a location where the end of the first vaporization filter 31 and the end of the second vaporization filter 32 are adjacent to each other, that is, at a location corresponding to the corner of the L-shape formed by the first vaporization filter 31 and the second vaporization filter 32.

The drain pan 34 is made of, for example, resin or metal, and is dish-shaped with an open surface at the top. When viewed from the front, the drain pan 34 is L-shaped and bent. The first vaporization filter 31 and the second vaporization filter 32 are placed in the areas that make up each side of the L shape. The first vaporization filter 31 and the second vaporization filter 32 are placed on the drain pan 34, and are arranged in an L shape.

The first water supply section 33A is placed on top of the first vaporization filter 31, and the second water supply section 33B is placed on top of the second vaporization filter 32, so that the first water supply section 33A and the second water supply section 33B are arranged to form an L shape, similar to the first vaporization filter 31 and the second vaporization filter 32. With this configuration, the outer shell of the cooling unit 3 can be configured to be L-shaped, improving the storage capacity of the cooling unit 3 and making it possible to reduce the size of the housing 11 of the air conditioner 1 that stores the cooling unit 3.

In the illustration of this embodiment, the structure of the first water supply section 33A will be described based on the first water supply section 33A constituting the water supply section 33. The first water supply section 33A forms a box body with a hollow structure inside. A plurality of first water supply holes 331 are provided on the bottom surface of the first water supply section 33A along the longitudinal direction of the container section 333. That is, the first water supply holes 331 are provided along the longitudinal direction of the first vaporization filter 31 on which the first water supply section 33A is placed. As an example, the first water supply holes 331 are arranged in the longitudinal direction point-symmetrically with the first water supply hole 331 provided in the center of the container section 333 as the center point. The container section 333 may be arranged upstream of the first air passing through the first vaporization filter 31, so that the first water supply hole 331 provided in the container section 333 is biased toward the upstream side of the first air. The structure of the second water supply section 33B is similar to that of the first water supply section 33A, and a plurality of second water supply holes 332 are provided on the bottom surface of the second water supply section 33B along the longitudinal direction of the container section 333. The structure of the second water supply section 33B can be explained by replacing the description of the first water supply section 33A with the description of the second water supply section 33B.

The first vaporization filter 31 and the second vaporization filter 32 are detachably attached to the unit body 300 and arranged in an L-shape. The unit body 300 includes a drain pan 34 provided below, and the first vaporization filter 31 and the second vaporization filter 32 are placed on the L-shaped drain pan 34 and arranged in an L-shape. The angle between the first vaporization filter 31 and the second vaporization filter 32, which are configured in an L-shape, is, for example, 60 degrees to 120 degrees. By bending the first vaporization filter 31 and the second vaporization filter 32 in this way, the inside of the L shape can be directed toward the corner of the rectangular sensible heat exchanger 4, and the first vaporization filter 31 and the second vaporization filter 32 can be arranged with the inside of the L shape facing the corner, and the inside of the L shape can be aligned with the corner, improving the storageability of these filters, etc., and reducing the size of the housing 11.

The first vaporization filter 31 and the second vaporization filter 32 each include a rectangular filter element 35, which is made of, for example, rayon, polyester, or nonwoven fabric. The first vaporization filter 31 and the second vaporization filter 32 are water-absorbent, and water (supply water) supplied from the tank 12 penetrates the entire surface of the first vaporization filter 31 and the second vaporization filter 32 (filter element 35), thereby promoting the evaporation of the water.

Figure 5 is a schematic perspective view illustrating one configuration of the vaporization filter (first vaporization filter 31, second vaporization filter 32). Figure 6 is a schematic side view illustrating one configuration of the vaporization filter (first vaporization filter 31, second vaporization filter 32). The first vaporization filter 31 and the second vaporization filter 32 attached to the unit body 300 of the cooling unit 3 include a rectangular filter element 35 and a rectangular plate member 36 provided on the side of the filter element 35, and may be the same part (common part) with the same configuration and shape.

The filter element 35 is made of a soft material, such as rayon, polyester, or nonwoven fabric, that allows deformation due to external forces. The filter element 35 is water-absorbent, and water (supply water) supplied from the tank 12 penetrates the entire surface of the filter element 35, promoting the evaporation of the water. The filter element 35 has a rectangular or square shape in a side view, and forms a rectangular parallelepiped according to the thickness of the filter element 35.

In the rectangular filter element 35, a notch 351 is provided at the lower corner in the flow direction of the dripping water (the lower left corner in this embodiment). The notch 351 forms a step structure on the lower surface of the filter element 35. The step structure is not limited to a step structure with one step, but may be a step structure with two or more steps. In addition, the notch 351 is not limited to one that forms such a step structure, and may be, for example, a tapered shape in which the corner is cut diagonally. Each of the left and right side surfaces formed by the thickness of the filter element 35 forms a rectangular shape that is long in the vertical direction. On both sides of the filter element 35, the longitudinal length of the side on which the notch 351 is provided is smaller than the longitudinal length of the side on which the notch 351 is not provided.

A plate member 36 made of, for example, resin is provided on the side surface on which the cutout portion 351 is provided. That is, the back surface of the plate member 36 faces the side surface on which the cutout portion 351 is provided, and the plate member 36 is affixed to the side surface of the filter element 35. The area of the rear surface of the plate member 36 facing the side surface on which the cutout portion 351 is provided is equal to or smaller than the area of the side surface.

The plate member 36 is provided with its upper end aligned with the upper end of the filter element 35 in the vertical direction. The plate member 36 is provided with its lower end aligned slightly above the lower end of the filter element 35. Alternatively, the plate member 36 may be provided with its lower end aligned with the lower end of the filter element 35 in the vertical direction.

The front surface of the plate member 36, which is opposite the filter element 35, is provided with a flange portion 362 that protrudes from the outer edge of the plate member 36 on the front surface. By providing the flange portion 362 on the front surface, the area of the front surface is larger than the area of the rear surface.

A plate-shaped gripping portion 361 is provided on the front surface. The gripping portion 361 is provided so as to protrude vertically from the front surface. A recess is provided on the front surface at a location inside the flange portion 362, and the gripping portion 361 may be provided so as to protrude from the bottom surface of the recess. The protruding height of the gripping portion 361 may be greater than the depth of the recess.

A frame-shaped (rectangular annular) frame-shaped seal member 363 is attached to the peripheral edge of the surface of the flange portion 362 facing the filter element 35 (the back surface of the flange portion 362). The frame-shaped seal member 363 is made of, for example, EPDM foam.

The filter element 35 is provided with a plurality of core members 37 penetrating therethrough, and the ends of the core members 37 are joined to the rear surface of the plate member 36. The core members 37 are made of resin or the like, similar to the plate member 36, and penetrate the filter element 35 in a direction perpendicular (left-right) to the direction in which the water drips (up-down).

The filter element 35, the plate member 36, and the evaporation filter including the plate member 36 (the first evaporation filter 31 and the second evaporation filter 32) may be formed by insert molding in which the filter element 35 is placed inside a resin mold, and then the plate member 36 and the resin that will be the material for the plate member 36 are poured in.

Figure 7 is a schematic perspective view illustrating one configuration of the mounting portion 301 of the unit body 300. Figure 8 is a schematic side view illustrating one configuration of the state in which the vaporization filter (first vaporization filter 31, second vaporization filter 32) is mounted on the mounting portion 301 of the unit body 300. The unit body 300 forms the outer shell of the cooling unit 3 and includes the mounting portion 301 to which the vaporization filter (first vaporization filter 31, second vaporization filter 32) is detachably mounted. The unit body 300 may include a drain pan 34 located below the mounted first vaporization filter 31 and second vaporization filter 32, or the drain pan 34 may be configured as a separate body from the unit body 300 and detachably configured from the unit body 300.

The unit body 300 has two mounting parts 301, one to which the first vaporization filter 31 is attached, and the other to which the second vaporization filter 32 is attached. The mounting part 301 to which the first vaporization filter 31 is attached forms a rectangular frame and includes an insertion hole 304 into which the first vaporization filter 31 is inserted, and a holding part 302 that holds the bottom of the inserted first vaporization filter 31.

The mounting portion 301 in which the second vaporization filter 32 is mounted has a similar configuration to the mounting portion 301 in which the first vaporization filter 31 is mounted. The two mounting portions 301 in which the first vaporization filter 31 and the second vaporization filter 32 are inserted are arranged in an L-shape in the unit body 300.

The insertion hole 304 is formed by the inner edge of the frame of the mounting part 301, and is a rectangular hole that is long in the vertical direction, similar to the side of the filter element 35. The point where the insertion hole 304 of the mounting part 301 to which the first vaporization filter 31 is attached and the insertion hole 304 of the mounting part 301 to which the second vaporization filter 32 is attached are adjacent corresponds to the corner of the L shape formed by the two mounting parts 301.

The first vaporization filter 31 and the second vaporization filter 32 are inserted through the respective insertion holes 304 with the side on which the plate member 36 is not provided facing the respective insertion holes 304, and are attached to the respective mounting parts 301. The attached first vaporization filter 31 and second vaporization filter 32 are stored inside the frame of the mounting part 301.

The holding part 302 is a box body with an open top, and the box body is provided with a plurality of communication holes that communicate with the drain pan 34. When the first vaporization filter 31 and the second vaporization filter 32 are attached to the attachment part 301, the bottoms (lower parts) of the filter elements 35 of the first vaporization filter 31 and the second vaporization filter 32 are located within the box body of the holding part 302 and are held by the holding part 302.

A plate-shaped dust filter 303 is provided on the bottom surface of the box, and the bottom surface of the dust filter 303 faces the bottom surface of the box, and the dust filter 303 is stored inside the box. By providing the dust filter 303, when the water supplied from the water supply unit 33 does not evaporate and drips downward from the filter element 35 in a liquid state, even if the dripped water contains dust, the dust filter 303 can capture the dust. The dust filter 303 is removable and can be cleaned.

The dimensional relationship between the insertion hole 304 of the mounting portion 301 and the vaporization filters (first vaporization filter 31, second vaporization filter 32) will be explained based on the state in which the first vaporization filter 31 is mounted on the mounting portion 301. Note that the second vaporization filter 32 has the same configuration as the first vaporization filter 31, and by replacing the description of the first vaporization filter 31 with the description of the second vaporization filter 32, the state in which the second vaporization filter 32 is mounted on the mounting portion 301 will be explained.

The filter element 35 of the first vaporization filter 31 has a cutout 351, so that a step structure is formed on the underside of the filter element 35. As a result, in the filter element 35, the longitudinal length (h2) of the side surface on which the cutout 351 is provided is smaller than the longitudinal length (h3) of the side surface on which the cutout 351 is not provided (h2<h3). The longitudinal length (h1) of the insertion hole 304 of the mounting part 301 is larger than the longitudinal length (h2) of the side surface on which the cutout 351 is provided, and is smaller than the longitudinal length (h3) of the side surface on which the cutout 351 is not provided (h2<h1<h3).

By adopting such a configuration, when removing the first vaporization filter 31 and the second vaporization filter 32 attached to the unit body 300, the plate member 36 can be placed at the front side, and the filter can be pulled out from the side whose longitudinal length has been reduced by the notch 351. Since the longitudinal length (h2) of the side on which the notch 351 is provided is smaller than the longitudinal length (h1) of the insertion hole 304 of the attachment portion 301, the first vaporization filter 31 and the second vaporization filter 32 can be easily removed, improving the ease of attachment and detachment.

The plate member 36 is provided with a gripping portion 361 that is gripped by a worker performing maintenance work when attaching or detaching the plate member 36, making it easier to remove the first vaporization filter 31 and the second vaporization filter 32 and improving the work efficiency of maintenance work.

The length (h3) of the side surface on which the notch 351 is not provided is greater than the length (h1) of the insertion hole 304 of the mounting part 301 in the longitudinal direction, but since the filter element 35 is made of a soft material such as rayon, polyester, or nonwoven fabric, it is temporarily deformed when inserted into the insertion hole 304 and is attached to the unit body 300. The filter element 35 inserted through the insertion hole 304 and attached to the mounting part 301 returns to its original shape, so that the length of the side surface on which the plate member 36 is not provided is greater than the length of the insertion hole 304 in the longitudinal direction. Therefore, in the first vaporization filter 31 and the second vaporization filter 32, the flow path cross-sectional area of the filter element 35 through which air passes can be relatively large, and the vaporization efficiency can be improved.

When the first vaporization filter 31 is attached to the attachment portion 301, the insertion hole 304 is closed by the flange portion 362 of the plate member 36 of the first vaporization filter 31. A frame-shaped seal member 363 is provided between the contact surface of the frame that forms the insertion hole 304 and the back surface of the flange portion 362 that faces the contact surface, improving the sealing performance.

When the first vaporization filter 31 is attached to the attachment portion 301, a gap is formed between the bottom surface (lower surface) of the filter element 35 and the dust filter 303 provided in the holding portion 302. That is, the length (height) from the top surface (upper surface) to the bottom surface (lower surface) of the filter element 35 is shorter (smaller) than the surface-to-surface distance between the top surface (upper surface) of the filter element 35 and the upper surface of the dust filter 303 when the first vaporization filter 31 is attached to the attachment portion 301. With this configuration, a gap is formed between the dust filter 303 and the bottom surface of the filter element 35, so that when the first vaporization filter 31 is pulled out from the attachment portion 301, the bottom surface of the filter element 35 does not come into contact with the dust collected in the dust filter 303, and the first vaporization filter 31 attached to the unit body 300 can be removed.

Alternatively, the bottom surface (lower surface) of the filter element 35 may be in contact with the upper surface of the dust filter 303 provided in the holding portion 302. In other words, the length (height) from the top surface (upper surface) to the bottom surface (lower surface) of the filter element 35 is the same as the interfacial distance between the top surface (upper surface) of the filter element 35 and the upper surface of the dust filter 303 when the first vaporization filter 31 is attached to the attachment portion 301. With this configuration, the dust filter 303 and the bottom surface of the filter element 35 are in contact with each other, so that when air passes through the first vaporization filter 31, it is possible to efficiently prevent the air from bypassing the filter element 35 of the first vaporization filter 31 without passing through it.

Alternatively, the bottom surface (lower surface) of the filter element 35 and the upper surface of the dust filter 303 provided in the holding portion 302 may be in elastic contact, and the bottom of the filter element 35 may be bent by elastic contact with the dust filter 303. That is, the length (height) from the top surface (upper surface) to the bottom surface (lower surface) of the filter element 35 is longer (larger) than the surface-to-surface distance between the top surface (upper surface) of the filter element 35 and the upper surface of the dust filter 303 when the first vaporization filter 31 is attached to the attachment portion 301. With this configuration, the dust filter 303 and the bottom surface of the filter element 35 are in elastic contact, and the first vaporization filter 31 is attached to the attachment portion 301 of the unit body 300 with the bottom of the filter element 35 in a bent state. This further suppresses the air from bypassing the filter element 35 of the first vaporization filter 31 without passing through it when passing through the first vaporization filter 31.

Figure 9 is a schematic perspective view illustrating one configuration of the fixing member 38 (front side). Figure 10 is a schematic perspective view illustrating one configuration of the fixing member 38 (rear side). The fixing member 38 forms a box body with an opening, and includes a first pressing portion 381 that presses and fixes the plate member 36 of the first vaporization filter 31, and a second pressing portion 382 that presses and fixes the plate member 36 of the second vaporization filter 32.

The fixing member 38 is provided at a location where the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32 are adjacent when the first vaporization filter 31 and the second vaporization filter 32 are attached to the unit body 300. In other words, the fixing member 38 is disposed between the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32, and is located at the corner of the L shape formed by the first vaporization filter 31 and the second vaporization filter 32.

When the fixing member 38 is disposed between the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32, the opening is disposed so as to face away from the plate members 36. In other words, the fixing member 38 is disposed so as to face the door portion 111 provided on the side of the housing 11. As a result, the bottom plate portion (bottom surface) of the box constituting the fixing member 38 functions as a second pressing portion 382 that presses the plate member 36 of the second vaporization filter 32. The left side plate portion (left side surface) of the box constituting the fixing member 38 functions as a first pressing portion 381 that presses the plate member 36 of the first vaporization filter 31.

By closing the door portion 111 provided on the side of the housing 11, the inner surface of the door portion 111 presses against the edge of the opening of the fixing member 38. As a result, the first pressing portion 381 (side plate portion) and the second pressing portion 382 (bottom plate portion) of the fixing member 38 press against the respective plate portions of the first vaporization filter 31 and the second vaporization filter 32, fixing the first vaporization filter 31 and the second vaporization filter 32, and maintaining the first vaporization filter 31 and the second vaporization filter 32 attached to the attachment portion 301.

The first pressing portion 381 (side plate portion) and the second pressing portion 382 (bottom plate portion) have recesses or the like to form recessed portions 383 that are recessed toward the inside of the box. When the fixing member 38 is placed between the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32 and the first vaporization filter 31 and the second vaporization filter 32 are pressed and fixed, the gripping portions 361 provided on the plate members 36 are positioned within the recessed portions 383.

The upper and lower side plate portions of the box body constituting the fixing member 38 are provided with engaging portions such as convex portions protruding from the outer surfaces of these side plate portions, and these convex portions engage with engaged portions such as concave portions provided in the unit body 300, thereby positioning the fixing member 38 relative to the unit body 300. With this configuration, the first vaporization filter 31 and the second vaporization filter 32 attached to the unit body 300 can be efficiently fixed by the single fixing member 38.

Figure 11 is an explanatory diagram illustrating the state in which the fixing member 38 is installed. Figure 12 is an explanatory diagram illustrating the state in which the fixing member 38 is removed. Figure 13 is an explanatory diagram illustrating the movement direction when attaching and detaching the vaporization filters (first vaporization filter 31, second vaporization filter 32). In the illustrations of this embodiment, the attachment and detachment of the first vaporization filter 31 and the second vaporization filter 32 will be described in a state in which the door portion 111 provided on the side of the housing 11 is open (open state).

The fixing member 38 is provided at a location located at the corner of the L shape formed by the first vaporization filter 31 and the second vaporization filter 32, i.e., it is disposed between the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32. When the fixing member 38 is disposed, i.e., when it is attached to the unit body 300, the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32 are covered by the fixing member 38.

By removing the fixing member 38 from the unit body 300, the plate members 36 of the first vaporization filter 31 and the second vaporization filter 32 are exposed, i.e., they are visible through the door portion 111 provided on the side of the housing 11. In this state, the first vaporization filter 31 and the second vaporization filter 32 can be removed from the unit body 300 by pulling out the gripping portion 361 provided on each plate member 36, and the first vaporization filter 31 and the second vaporization filter 32 can be taken out of the housing 11.

The first vaporization filter 31 and the second vaporization filter 32 are attached to the unit body 300 so as to form an L-shape, so that the direction of movement of the first vaporization filter 31 when pulled out from the unit body 300 is the vertical side direction of the L, and the direction of movement of the second vaporization filter 32 when pulled out from the unit body 300 is the horizontal side direction of the L. Therefore, the directions of movement of the first vaporization filter 31 and the second vaporization filter 32 when pulled out from the unit body 300 intersect.

Similarly, when the first vaporization filter 31 and the second vaporization filter 32 are attached to the unit body 300, i.e., when they are inserted into the insertion hole 304 of the attachment portion 301, their respective movement directions also intersect. In this way, the respective movement directions when the first vaporization filter 31 and the second vaporization filter 32 are freely attached and detached to the inside and outside of the housing 11 intersect, which allows a portion of the spatial area to overlap between the movement space of the first vaporization filter 31 and the movement space of the second vaporization filter 32, thereby preventing the size of the inspection hole from becoming larger.

(Embodiment 2)
Fig. 14 is a schematic side view illustrating one configuration of the vaporization filter (first vaporization filter 31, second vaporization filter 32) according to embodiment 2. Fig. 15 is a schematic side view illustrating one configuration of the vaporization filter (first vaporization filter 31, second vaporization filter 32) attached to the attachment portion 301 of the unit body. The vaporization filter (first vaporization filter 31, second vaporization filter 32) of embodiment 2 includes a rectangular filter element 35 and a rectangular plate member 36 provided on a side of the filter element 35, similar to embodiment 1.

In the second embodiment, the filter elements 35 of the first vaporization filter 31 and the second vaporization filter 32 are not provided with the notch 351, and the filter elements 35 are rectangular parallelepipeds that do not have any missing portions due to the notch 351. This improves the manufacturability of the filter elements 35.

As in the first embodiment, the plate member 36 includes a front surface located opposite the filter element 35 and a rear surface located on the side of the filter element 35. The rear surface corresponds to a surface (contact surface) that is in close contact with the side of the filter element 35. In other words, the rear surface (contact surface) of the plate member 36 faces the side of the filter element 35 facing the plate member 36, and the plate member 36 and the filter element 35 are joined together.

The dimensional relationship between the insertion hole 304 of the mounting portion 301 and the vaporization filters (first vaporization filter 31, second vaporization filter 32) in embodiment 2 will be described based on the state in which the first vaporization filter 31 is mounted on the mounting portion 301. The configuration of the mounting portion 301 of the unit body in embodiment 2 is the same as in embodiment 1.

In the filter element 35 of the first vaporization filter 31, the longitudinal length of the side on which the plate member 36 is provided is equal to the longitudinal length of the side on which the plate member 36 is not provided (longitudinal length of the side of the filter element 35: L3). The longitudinal length (L2) of the rear surface (contact surface) of the plate member 36 that is in close contact with the side of the filter element 35 is smaller than the longitudinal length (L3) of the side of the filter element 35 (L2 < L3).

As in the first embodiment, the plate member 36 is positioned so that the upper end of the plate member 36 and the upper end of the filter element 35 are aligned in the vertical direction, and the lower end of the side of the filter element 35 protrudes downward from the lower edge of the rear surface (contact surface) of the plate member 36. The longitudinal length (L1) of the insertion hole 304 of the mounting portion 301 is greater than the longitudinal length (L2) of the rear surface (contact surface) of the plate member 36, and is smaller than the longitudinal length (L4) of the front surface of the plate member 36 on which the flange portion 362 is provided (L2<L1<L4). As in the first embodiment, the longitudinal length (L3) of the side of the filter element 35 is greater than the longitudinal length (L1) of the insertion hole 304 of the mounting portion 301, and is smaller than the longitudinal length (L4) of the front surface of the plate member 36 on which the flange portion 362 is provided (L1<L3<L4).

Therefore, the length relationship between the longitudinal length (L1) of the insertion hole 304 of the mounting portion 301, the longitudinal length (L2) of the rear surface (contact surface) of the plate member 36, the longitudinal length (L3) of the side surface of the filter element 35, and the longitudinal length (L4) of the front surface of the plate member 36 on which the flange portion 362 is provided is (L2<L1<L3<L4). By setting such a dimensional relationship, it is possible to mount a filter element 35 larger than the longitudinal length (L1) of the insertion hole 304 in the mounting portion 301, while blocking the insertion hole 304 with the flange portion 362 of the plate member 36, and to efficiently replace the vaporization filter (first vaporization filter 31, second vaporization filter 32) using the gripping portion of the plate member 36. However, the relationship between L3 and L4 may be changed as appropriate, and may be L3≧L4.

The holding part 302 is a box with an open top as in the first embodiment, and the bottom surface of the box is provided with a plurality of communication holes that communicate with the drain pan 34. The bottom surface of the holding part 302 forming the box is provided with a holding rib 305 for holding the dust filter 303. The holding rib 305 is, for example, composed of one or more protrusions (linear ribs) protruding upward from the bottom surface of the holding part 302, and is provided so as to be parallel to the movement direction when attaching and detaching the first vaporization filter 31 or the second vaporization filter 32. Since the holding rib 305 is configured as a protrusion that is parallel to the movement direction when attaching and detaching the first vaporization filter 31, etc., and protrudes upward from the dust filter 303, the holding rib 305 functions as a movement guide when attaching and detaching the first vaporization filter 31 and the second vaporization filter 32. This can improve the operability when attaching and detaching the first vaporization filter 31 and the second vaporization filter 32. The retaining rib 305 can prevent the first vaporization filter 31 and the second vaporization filter 32 from coming into contact with the dust filter when attaching or detaching the first vaporization filter 31 and the second vaporization filter 32. This can prevent foreign matter accumulated on the dust filter 303 from coming into contact with the first vaporization filter 31 or the second vaporization filter 32. The retaining rib 305 can also easily retain the dust filter 303.

In the holding section 302 forming a box body, a wall surface (side surface) parallel to the direction of movement when attaching or detaching the first vaporization filter 31 or the second vaporization filter 32 has a low wall portion 306 in which the height of the wall surface is partially reduced. The low wall portion 306 may be formed by cutting out the upper end portion of the wall surface on the side of the insertion hole 304. By forming the low wall portion 306 at the upper end portion of the wall surface on the side of the insertion hole 304, it is possible to improve the ease of attachment when inserting the first vaporization filter 31 and the second vaporization filter 32 through the insertion hole 304.

The embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present invention is indicated by the claims, not by the above meaning, and is intended to include all modifications within the scope and meaning equivalent to the claims.

1 Air conditioner 11 Housing (main body)
111 Door section 12 Tank (separate body)
Description of the Reference Signs 13 Electric unit 3 Cooling unit 300 Unit body 301 Mounting portion 302 Holding portion 303 Dust filter 304 Insertion hole 305 Holding rib 306 Bottom wall portion 31 First vaporization filter 32 Second vaporization filter 33 Water supply portion 33A First water supply portion 33B Second water supply portion 331 First water supply hole 332 Second water supply hole 333 Container portion 34 Drain pan 35 Filter element 351 Cutout portion 36 Plate member 361 Grip portion 362 Flange portion 363 Frame-shaped sealing member 37 Core member 38 Fixing member 381 First pressing portion 382 Second pressing portion 383 Recess portion 4 Sensible heat exchanger 41 First path 42 Second path 431 First inlet side opening surface 432 Second inlet side opening surface 441 First outlet side opening surface 442 Second outlet side opening surface 5 Suction port 51 Suction flow path 52 Branch flow path 53 Dust collection filter 531 Sealing member 61 First flow path 62 Second flow path 71 First blow-out outlet 711 Blowing duct 72 Second blow-out outlet 8 Fan motor 81 First fan 82 Second fan 83 Partition plate 84 Fan casing 91 Supply water path 911 First supply water path 912 Second supply water path 913 Supply water pump 92 Return water path 921 First return water path 922 Second return water path 923 Return pump

Claims (14)

A cooling unit used in an air conditioner that cools a conditioned space,
A detachable evaporative filter is provided for cooling air passing through the filter by using the latent heat of water.
The vaporization filter includes:
A filter element having a rectangular shape and through which water permeates from above;
a rectangular plate member provided on a side surface of the filter element,
A lower end portion of the filter element protrudes downward beyond a lower edge of a surface of the plate member facing the filter element,
a plurality of core members extending through the filter element;
The cooling unit, wherein an end of the core member is joined to the plate member. A cooling unit used in an air conditioner that cools a conditioned space,
A detachable evaporative filter is provided for cooling air passing through the filter by using the latent heat of water.
The vaporization filter includes:
A filter element having a rectangular shape and through which water permeates from above;
a rectangular plate member provided on a side surface of the filter element,
a lower end portion of the filter element protrudes downward from a lower edge of a surface of the plate member facing the filter element;
The filter element has a notch formed by cutting out a corner on the side where the plate member is provided,
A cooling unit, characterized in that a longitudinal length of a side surface on which the plate member is provided is smaller than a longitudinal length of a side surface on which the plate member is not provided. A cooling unit used in an air conditioner that cools a conditioned space,
A detachable evaporative filter is provided for cooling air passing through the filter by using the latent heat of water.
The vaporization filter includes:
A filter element having a rectangular shape and through which water permeates from above;
a rectangular plate member provided on a side surface of the filter element,
a lower end portion of the filter element protrudes downward from a lower edge of a surface of the plate member facing the filter element,
The cooling unit according to claim 1, wherein the plate member is provided with a gripping portion that is gripped when the plate member is attached or detached. A cooling unit used in an air conditioner that cools a conditioned space,
A detachable evaporative filter is provided for cooling air passing through the filter by using the latent heat of water.
The vaporization filter includes:
A filter element having a rectangular shape and through which water permeates from above;
a rectangular plate member provided on a side surface of the filter element,
A lower end portion of the filter element protrudes downward beyond a lower edge of a surface of the plate member facing the filter element,
a mounting portion on which the vaporization filter is mounted;
The mounting portion has a rectangular insertion hole into which the vaporization filter is inserted,
a longitudinal length of a side surface of the filter element on which the plate member is not provided is greater than a longitudinal length of the insertion hole. The plate member is provided with a flange portion protruding from an outer edge of the plate member,
The cooling unit according to claim 4 , wherein the insertion hole is closed by the flange portion. The cooling unit according to claim 5 , wherein a frame-shaped seal member is provided on a surface of the flange portion on the side of the insertion hole. The mounting portion includes a holding portion that holds a bottom portion of the vaporization filter,
The holding portion is provided with a plate-shaped dust filter that collects dust adhering to the filter element,
The cooling unit according to any one of claims 4 to 6, wherein a gap is formed between the dust filter and a bottom surface of the filter element. The mounting portion includes a holding portion that holds a bottom portion of the vaporization filter,
The holding portion is provided with a plate-shaped dust filter that collects dust adhering to the filter element,
The cooling unit according to any one of claims 4 to 6, wherein the dust filter and a bottom surface of the filter element are in contact with each other. The mounting portion includes a holding portion that holds a bottom portion of the vaporization filter,
The holding portion is provided with a plate-shaped dust filter that collects dust adhering to the filter element,
7. The cooling unit according to claim 4, wherein the dust filter and a bottom surface of the filter element are in elastic contact with each other, so that the bottom of the filter element is bent. A cooling unit used in an air conditioner that cools a conditioned space,
A detachable evaporative filter is provided for cooling air passing through the filter by using the latent heat of water.
The vaporization filter includes:
A filter element having a rectangular shape and through which water permeates from above;
a rectangular plate member provided on a side surface of the filter element,
a lower end portion of the filter element protrudes downward from a lower edge of a surface of the plate member facing the filter element,
The evaporation filter includes a first evaporation filter that cools a first air blown into the conditioned space by using latent heat of water, and a second evaporation filter that cools a second air that exchanges sensible heat with the first air by using latent heat of water,
The first vaporization filter and the second vaporization filter are arranged in an L-shape,
a fixing member for fixing the first vaporization filter and the second vaporization filter,
The fixing member is
a first pressing portion that presses and fixes the plate member of the first vaporization filter;
a second pressing portion that presses and fixes the plate member of the second vaporization filter. A cooling unit according to claim 10;
An air conditioner having a housing that houses the cooling unit,
the first vaporization filter and the second vaporization filter are attached to the cooling unit with the plate members adjacent to each other,
In the housing, a door portion for closing an inspection hole is provided in a freely openable manner on a side surface of each of the first vaporization filter and the second vaporization filter on the side where the plate member is provided,
The first evaporation filter and the second evaporation filter are detachably provided to the housing through the inspection hole. The air conditioner according to claim 11, wherein a moving direction in which the first vaporization filter is moved when the first vaporization filter is attached to or detached from the housing intersects with a moving direction in which the second vaporization filter is moved to or detached from the housing. An air conditioner comprising a cooling unit that cools a space to be air-conditioned and a housing that houses the cooling unit ,
the cooling unit includes an evaporative filter that is detachably attached and cools air passing through the evaporative filter by using latent heat of water;
The vaporization filter includes:
A filter element having a rectangular shape and through which water permeates from above;
a rectangular plate member provided in close contact with a side surface of the filter element,
a lower end portion of the filter element protrudes downward from a lower edge of a surface of the plate member facing the filter element,
The evaporation filter includes a first evaporation filter that cools a first air blown into the conditioned space by using latent heat of water, and a second evaporation filter that cools a second air that exchanges sensible heat with the first air by using latent heat of water,
The first vaporization filter and the second vaporization filter are arranged in an L-shape,
the first vaporization filter and the second vaporization filter are attached to the cooling unit with the plate members adjacent to each other,
In the housing, a door portion for closing an inspection hole is provided in a freely openable manner on a side surface of each of the first vaporization filter and the second vaporization filter on the side where the plate member is provided,
The first evaporation filter and the second evaporation filter are detachably provided to the housing through the inspection hole. The air conditioner according to claim 13 , wherein a moving direction in which the first vaporization filter is moved when the first vaporization filter is attached to or detached from the housing intersects with a moving direction in which the second vaporization filter is moved to or detached from the housing.

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