WO2010097884A1 - Ventilation fan for simultaneously performing air supply and air discharge - Google Patents

Abstract

A heat exchanger (9) is provided upstream of an air supplying fan (7b). An air discharging fan (7a) and the air supplying fan (7b) are arranged so as to respectively face those surfaces of the heat exchanger (9) which are perpendicular to each other. A circuit board (10) is mounted at a position which is in an outer casing (1) and at a corner diagonally opposite the heat exchanger (9).

Description

Simultaneous exhaust / exhaust fan

The present invention relates to a simultaneous supply / exhaust type exhaust fan, and more particularly, to a simultaneous supply / exhaust type exhaust fan that blows air into a room from a panel outlet while sucking room air from a panel inlet formed by a decorative panel fixed to a ceiling. .

In order to realize ventilation with little fluctuation of the state quantity in the room, there is a method of installing a simultaneous supply / exhaust type ventilation fan on the ceiling and performing simultaneous supply / exhaust while exchanging heat.

As such a simultaneous supply / exhaust type ventilation fan, Patent Document 1 discloses that a heat exchange between supply and exhaust flows is performed by a hexahedron casing and a laminated hexahedron heat exchanger built in the hexahedron. About a heat exchange ventilator that performs ventilation by supply and exhaust, the heat exchanger is placed in the casing so that one fluid passage and the other fluid passage intersect in a substantially horizontal direction and a substantially vertical direction, and heat exchange An air supply blower that forms a supply airflow is provided on one side of both small openings where the fluid passage of the air cleaner does not face, and an exhaust air blower that forms an exhaust flow is provided on the other side. A method is disclosed in which the outlet and the indoor suction port of the exhaust ventilation path are separated and configured on the lower surface of the casing facing the open surface of one fluid passage of the heat exchanger.

JP-A-11-248216

However, according to the technique of Patent Document 1, the air supply fan, the heat exchanger, and the exhaust air fan are arranged in a line. For this reason, the simultaneous supply / exhaust type exhaust fan becomes longer in the lateral direction, which may hinder the compaction of the simultaneous supply / exhaust type exhaust fan.

Further, according to the technique of Patent Document 1, since the air supply fan is arranged on the upstream side of the heat exchanger, the outdoor air supply air is directly taken into the air supply fan. Therefore, the air supply fan is easily soiled, and it is necessary to perform cleaning frequently.

The present invention has been made in view of the above, and obtains a simultaneous supply / exhaust type ventilation fan that can prevent downsizing of the outdoor air supply air and that is directly taken into the air supply fan. For the purpose.

In order to solve the above-described problems and achieve the object, a simultaneous supply / exhaust ventilation fan according to the present invention includes an exterior casing in which an exhaust ventilation path and an intake ventilation path independent from each other are formed, and a lower part of the exterior casing. A bottom panel provided with a panel inlet and a panel outlet, and an exhaust accommodated in the exterior casing and sent to the exhaust ventilation path and exhausted as an exhaust stream by suction air sucked into the panel inlet. A blower for supply, an air supply blower that is housed in the exterior casing and is supplied to the supply air passage, is supplied to the panel outlet, and blown out as a blowout airflow, and an upstream side of the supply blower And a heat exchanger for exchanging heat between the exhaust stream and the supply air stream.

According to the present invention, there is an effect that it is possible to prevent the outdoor air supply air from being directly taken into the air supply blower while being made compact.

FIG. 1 is a perspective view illustrating an example of the internal configuration of the simultaneous supply / exhaust ventilation fan of FIG. 1. FIG. 2 is a cross-sectional view showing the simultaneous supply / exhaust type ventilation fan of FIG. 1 cut along the flow direction of the suction airflow A1 and the blowout airflow B2. FIG. 3 is a perspective view showing an example of an internal configuration of the simultaneous supply / exhaust type ventilation fan of FIG. FIG. 4 is an exploded perspective view showing a schematic configuration of an attachment portion of the decorative panel according to the second embodiment of the simultaneous supply / exhaust ventilation fan according to the present invention. FIG. 5 is a cross-sectional view schematically showing an example of an arrangement state of the chamber 11 and the separator 12 of the simultaneous supply / exhaust ventilation fan of FIG. FIG. 6 is a perspective view showing a schematic configuration of the bottom panel portion of the third embodiment of the simultaneous supply / exhaust ventilation fan according to the present invention. FIG. 7 is a cross-sectional view showing the fourth embodiment of the simultaneous supply / exhaust ventilation fan according to the present invention cut along the flowing direction of the suction airflow A1 and the blowout airflow B2. FIG. 8 is a plan view showing a fifth embodiment of the simultaneous supply / exhaust type ventilation fan according to the present invention in a transparent manner.

Explanation of symbols

SI, SI 'Air supply port SO, SO' Exhaust port UI Panel suction port UO Panel air outlet A1 Suction airflow A2 Exhaust air flow B1 Airflow B2 Airflow 1, 51 Exterior casing 2, 23 Panel exterior frame 3, 33, 103 Lower surface Panel 4 Main body opening 5a, 55a Exhaust motor 5b, 55b Supply motor 6a, 56a Exhaust blade 6b, 56b Supply blade 7a, 57a Exhaust fan 7b, 57b Supply fan 8a Exhaust fan casing 8b Air supply fan casing 9, 59 Heat exchanger 10, 60 Circuit board 12, 25, 27, 35 Separator 14a Exhaust ventilation path 14b Supply air ventilation path 15a, 29a Exhaust chamber 15b, 29b Supply chamber 16 Supply side dust removal filter 17 Blower outlet 21 Panel mounting bracket 21a Suction side opening 21b Blower side opening 22 Groove 2a 2b, 23a, 23b, 31a, 31b Wall surface 24 Rail 26, 28 Fitting structure 32 Exhaust-side dust removal filter 34 Hook structure 41 Air filter 42 High performance filter

Hereinafter, an embodiment of a simultaneous supply / exhaust ventilation fan according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

FIG. 1 is a perspective view showing an example of the internal configuration of the simultaneous supply / exhaust ventilation fan of FIG. 1, and FIG. 2 shows the simultaneous supply / exhaust ventilation fan of FIG. 1 along the flow direction of the suction airflow A1 and the blowout airflow B2. FIG. 3 is a perspective view showing a cutaway example of the internal configuration of the simultaneous supply / exhaust type ventilation fan of FIG.

In FIG. 1 to FIG. 3, on the lower surface of the outer casing 1, the suction airflow A1 sucked into the panel suction port UI is taken into the outer casing 1 or the supply airflow B1 sucked into the outer casing 1 is taken into the outer casing 1. A main body opening 4 for discharging to the outside is formed. A lower panel 3 is attached below the outer casing 1 via the panel outer frame 2 so as to cover the main body opening 4. The panel outer frame 2 can be configured in a rectangular tube shape so that the outer frame is along the outer periphery of the main body opening 4. Moreover, as the lower surface panel 3, a decorative panel can be used, for example.

Here, the side surface of the outer casing 1 is provided with an exhaust port SO for exhausting the exhaust air flow A2 to the outside of the outer casing 1 and an air inlet SI for supplying the air supply air B1 into the outer casing 1. In addition, a panel suction port UI for sucking the suction airflow A1 and a panel blowout port UO for blowing the blowout airflow B2 are formed in the lower surface panel 3 below the outer casing 1.

Here, the panel suction inlet UI and the panel outlet UO can be formed by the lower panel 3 so as to face each other. In this case, the panel suction port UI and the panel outlet UO are formed along the lower surface panel 3, and the direction of the suction airflow A1 sucked into the panel suction port UI and the outlet airflow B2 blown out from the panel outlet UO. It is preferable to arrange so that the directions are the same.

Also, the lower panel 3 is provided with a separator 12 that prevents the suction airflow A1 sucked from the panel suction port UI from intersecting with the blowout airflow B2 blown from the panel blowout port UO. In addition, the separator 12 can be comprised with a partition plate or a partition, and can be arrange | positioned so as to be orthogonal to the suction direction of suction airflow A1, and the blowing direction of blowing airflow B2.

Further, wall surfaces 2a and 2b are formed on both sides of the panel outer frame 2 to restrict the advancing direction along the lower surface panel 3 of the suction airflow A1 and the blowout airflow B2 in one direction.

Further, the outer casing 1 is partitioned so that the exhaust flow A2 exhausted from the exhaust port SO and the supply air flow B1 supplied from the air supply port SI do not intersect within the outer casing 1, so that the exhaust ventilation path 14 a. And the air supply passage 14b are formed in the outer casing 1 independently of each other. The exterior casing 1 accommodates an exhaust fan 7a, an air supply fan 7b, a heat exchanger 9, and a circuit board 10. Here, the exhaust blower 7a is disposed on the exhaust ventilation path 14a, and the supply air blower 7b is disposed on the supply ventilation path 14b, and the exhaust blower 7a and the supply blower 7b exchange heat. It arrange | positions so that it may respectively oppose to the mutually orthogonal surface of the container 9. The heat exchanger 9 is disposed on the exhaust ventilation path 14a and the supply air ventilation path 14b, and is disposed on the upstream side of the supply air blower 7b.

The exhaust fan 7a can send the suction air flow A1 sucked into the panel suction port UI to the exhaust ventilation passage 14a and exhaust it as the exhaust flow A2 from the exhaust port SO. The exhaust fan 7a includes an exhaust blade 6a that forms the exhaust flow A2, an exhaust motor 5a that rotates the exhaust blade 6a, and a spiral shape that is configured to surround the exhaust blade 6a and the exhaust motor 5a. An exhaust fan casing 8a is provided.

Further, the air supply blower 7b can send the air supply air B1 supplied from the air supply port SI to the air supply air passage 14b to the panel outlet UO and blow out from the panel outlet UO as the outlet air flow B2. The supply fan 7b surrounds the supply blade 6b that forms the supply air flow B1, the supply motor 5b that rotates the supply blade 6b, and the supply blade 6b and the supply motor 5b. A spiral air supply fan casing 8b configured as described above is provided. The air supply fan casing 8b is formed with a blower outlet 17 for blowing out the air supply air B1 so as to face the lower panel 3.

Further, the heat exchanger 9 can perform heat exchange between the exhaust flow A2 exhausted from the exhaust port SO and the supply air flow B1 supplied from the supply port SI. As shown in FIG. 3, the heat exchanger 9 can have a hexahedral structure in which ventilation paths orthogonal to each other are alternately stacked. Here, the heat exchanger 9 is disposed such that the inflow surface of the exhaust air flow A2 faces the lower panel 3 and the inflow surface of the air supply air B1 faces the air inlet SI. And about the exhaust flow A2, the ventilation path in the heat exchanger 9 is ensured in the orthogonal | vertical direction with respect to the lower surface panel 3, and about the supply air flow B1, the ventilation path in the heat exchanger 9 is in the blowing direction of the blowing air flow B2. The heat exchanger 9 can be arranged in the outer casing 1 so as to be ensured.

Also, the circuit board 10 can be equipped with a power supply circuit that supplies power to the exhaust motor 5a and the supply motor 5b, and a control circuit that controls the rotation of the exhaust motor 5a and the supply motor 5b.

Here, the supply port SI and the exhaust port SO are arranged side by side in a direction perpendicular to the suction direction of the suction airflow A1 and the blowout direction of the blowout airflow B2. Further, the air inlet SI, the heat exchanger 9 and the air supply fan 7b are arranged in this order along the suction direction of the suction airflow A1 and the blowout direction of the blowout airflow B2. Further, the exhaust port SO, the exhaust fan 7a, and the circuit board 10 are arranged in this order along the suction direction of the suction airflow A1 and the blowout direction of the blowout airflow B2. That is, the heat exchanger 9 and the circuit board 10 are arranged at one diagonal position of the outer casing 1, and the air supply fan 7 b and the exhaust fan 7 a are arranged at the other diagonal position of the outer casing 1. Has been.

Further, the exhaust blade 6 a is disposed so as to face the laminated surface of the heat exchanger 9. The exhaust motor 5a is disposed on the heat exchanger 9 side. The exhaust fan casing 8a is connected to the exhaust port SO. The air supply blade 6b is disposed so as to face the outflow surface of the air supply air B1 in the heat exchanger 9. The air supply motor 5b is disposed on the opposite side of the heat exchanger 9.

Further, between the exhaust port SO and the heat exchanger 9, an air supply side dust removal filter 16 for removing dust from the air supply air flow B1 is installed. Further, the space under the outer casing 1 partitioned by the panel outer frame 2 is divided into two by the separator 12, so that the exhaust chamber 15a that leads to the exhaust vent passage 14a and the supply chamber 15b that leads to the supply vent passage 14b. Is formed.

When the simultaneous supply / exhaust ventilation fan is installed indoors, the outer casing 1 can be arranged behind the ceiling so that the lower panel 3 protrudes indoors from the ceiling surface. Here, the lower surface panel 3 can be arrange | positioned so that a ceiling surface may be opposed.

Then, when the exhaust vane 6a and the supply vane 6b are respectively rotated by the exhaust motor 5a and the supply motor 5b, the indoor intake airflow A1 is drawn horizontally along the ceiling surface from the panel intake port UI. In addition, the outdoor air supply air B1 is supplied from the air supply port SI.

When the suction airflow A1 is sucked horizontally along the ceiling surface from the panel suction port UI, the forward direction is blocked by the separator 12, so the traveling direction of the suction airflow A1 is changed, and the exhaust airflow A2 is heated. Guided to exchanger 9. Further, when the outdoor air supply air B1 is supplied from the air supply port SI, since the heat exchanger 9 is installed in front of the air supply port SI, the air supply air B1 is guided to the heat exchanger 9. . When the exhaust flow A2 and the supply airflow B1 are guided to the heat exchanger 9, heat exchange is performed between the exhaust flow A2 and the supply airflow B1, and then the exhaust flow A2 flows into the exhaust fan 7a. The air supply air B1 flows into the air supply fan 7b. Here, by performing heat exchange between the exhaust air flow A2 and the air supply air flow B1, exhaust heat can be recovered, and the load on air conditioning can be reduced.

Then, when the exhaust flow A2 flows into the exhaust fan 7a, the exhaust fan A is guided in the direction of the exhaust port SO by the exhaust fan 7a and is exhausted from the exhaust port SO to the outside of the room. On the other hand, when the air supply air B1 flows into the air supply blower 7b, the air supply air blower 7b guides the airflow B1 in the direction of the lower panel 3 and sends it out through the air blower outlet 17. When the air supply air B1 is sent out through the blower outlet 17, the front is blocked by the lower panel 3, the side is blocked by the wall surfaces 2a and 2b, and the rear is blocked by the separator 12. Therefore, the air is blown horizontally from the panel outlet UO into the room along the ceiling surface as the air flow B2.

Then, when the suction airflow A1 is sucked horizontally along the ceiling surface from the panel suction port UI and the blowout airflow B2 is blown horizontally along the ceiling surface from the panel air outlet UO, the panel air outlet UO → inside the room While the ceiling surface → indoor wall surface → indoor floor surface → indoor wall surface → indoor ceiling surface → panel suction port UI is generated a ventilation flow that circulates indoors, while suppressing the occurrence of ventilation stagnation, The room can be ventilated.

Here, by disposing the heat exchanger 9 upstream of the air supply fan 7b, it is possible to prevent the outdoor air supply air B1 from being directly taken into the air supply fan 7b. For this reason, the air supply blower 7b can be made difficult to get dirty, and the number of cleanings can be reduced.

Further, by arranging the exhaust fan 7a and the air supply fan 7b so as to face the mutually orthogonal surfaces of the heat exchanger 9, the air supply fan 7b, the heat exchanger 9 and the exhaust air fan 7b are arranged. The exhaust ventilation path 14a and the supply air ventilation path 14b can be formed independently of each other in the outer casing 1 without being arranged in a line. For this reason, it becomes possible to shorten the width | variety of a simultaneous supply / exhaust type ventilation fan, and it becomes possible to achieve the compactness of a simultaneous supply / exhaust type ventilation fan.

Further, an air supply blower is provided after dust and high-humidity air (mist, etc.) are removed from the air supply air flow B1 by disposing the air supply side dust removal filter 16 between the air supply port SI and the heat exchanger 9. 7b can be made to flow. For this reason, it is possible to reduce clogging of the air supply blower 7b due to dust, defects of electrical components such as the air supply motor 5b due to high humidity air, and the like.

Further, by arranging the circuit board 10 at the diagonal position of the outer casing 1 in which the heat exchanger 9 is arranged, it becomes possible to effectively use the dead space in the outer casing 1, and the simultaneous supply / exhaust ventilation fan is made compact. Can be achieved. In addition, by housing the circuit board 10 in the outer casing 1, it is not necessary to install the circuit board 10 outside the outer casing 1. For this reason, it becomes possible to access the circuit board 10 from the main body opening part 4 of the exterior casing 1, and the workability | operativity at the time of the maintenance of the circuit board 10 can be improved.

Further, by arranging the heat exchanger 9 so that the inflow surface of the exhaust flow A2 faces the lower panel 3, the exhaust ventilation path 14a and the supply ventilation path 14b can be expanded in the outer casing 1. For this reason, it becomes possible to reduce an airway pressure loss, and it becomes possible to improve ventilation efficiency.

Embodiment 2. FIG.
FIG. 4 is an exploded perspective view showing a schematic configuration of the attachment portion of the decorative panel of the second embodiment of the simultaneous supply / exhaust ventilation fan according to the present invention, and FIG. 5 shows the chamber 11 of the simultaneous supply / exhaust ventilation fan of FIG. It is sectional drawing which shows typically an example of the arrangement | positioning state of and the separator 12. FIG. 4 and 5, a panel mounting bracket 21 is provided on the lower surface of the outer casing 1 and is fixed to the outer casing 1.

Here, the outer frame of the panel mounting bracket 21 can be configured to correspond to the outer periphery of the main body opening 4 provided on the lower surface of the exterior casing 1, and can have a rectangular tube shape. Further, the surface of the panel mounting bracket 21 facing the exterior casing 1 is provided with a suction side opening 21a that guides the suction airflow A1 sucked from the panel suction port UI into the exterior casing 1, and the blower blower of FIG. An outlet side opening 21b is provided that guides the supply airflow B1 blown out from the outlet 17 to the panel outlet UO as the outlet airflow B2.

The panel outer frame 23 is attached to the panel mounting bracket 21 so that it can move up and down with respect to the panel mounting bracket 21. Here, the outer frame of the panel outer frame 23 can be configured so that the panel outer frame 23 and the panel mounting bracket 21 can be shifted up and down while being in close contact with the outer frame of the panel mounting bracket 21.

Further, on both sides of the panel outer frame 23, wall surfaces 23a and 23b are formed to restrict the advancing direction along the lower surface panel 103 of the suction airflow A1 and the blowout airflow B2 in one direction. In addition, a cushioning material may be provided between the panel mounting bracket 21 and the panel exterior frame 23 in order to prevent wind leakage from occurring between the panel mounting bracket 21 and the panel exterior frame 23.

Here, in order to restrict the moving direction of the panel outer frame 23 relative to the panel mounting bracket 21, the panel mounting bracket 21 is formed with a groove 22 in the vertical direction, and the panel outer frame 23 has a groove 22. A rail 24 that can be fitted is formed. Note that a rail may be formed on the panel mounting bracket 21 and a groove may be formed on the panel exterior frame 23.

Further, the panel mounting bracket 21 and the lower panel 103 are provided with separators 25 and 27 for preventing the suction airflow A1 sucked from the panel suction port UI and the blowing airflow B2 blown from the panel outlet UO from crossing each other. Is provided. In addition, the separators 25 and 27 can be comprised by a partition plate or a partition, and can be arrange | positioned perpendicularly to the lower surface panel 103. FIG. Moreover, the separators 25 and 27 can be comprised by elastic bodies, such as resin. The separators 25 and 27 are provided with fitting structures 26 and 28, respectively. Here, the fitting structures 26 and 28 can be configured so that the separators 25 and 27 can be shifted up and down while the separators 25 and 27 are closely fitted to each other.

And the panel suction inlet UI and the panel blower outlet UO are formed in the lower surface panel 103 by being fixed to the panel exterior frame 23 so that the both ends vicinity of the lower surface panel 103 may be supported by wall surface 23a, 23b.

In addition, the space under the outer casing 1 partitioned by the panel mounting bracket 21 is divided into two by the separators 25 and 27, so that the exhaust chamber 29 a leading to the exhaust ventilation path 14 a of the outer casing 1 and the outer casing 1 An air supply chamber 29b communicating with the air supply passage 14b is formed.

Then, the suction airflow A1 sucked horizontally from the panel suction port UI is changed in the traveling direction to vertical by the separators 25 and 27, and is guided to the exhaust ventilation path 14a of the exterior casing 1 through the exhaust chamber 29a. On the other hand, the supply airflow B1 sent vertically from the blower outlet 17 is changed in the direction of travel horizontally by the lower panel 103, and is blown horizontally into the room from the panel outlet UO as the outlet airflow B2.

Thereby, it becomes possible to prevent the supply airflow B1 sent from the blower outlet 17 from being directly blown out as the blowout airflow B2, and to reduce the blowing sound from the supply air blower 7b.

Further, by configuring the panel exterior frame 23 and the panel mounting bracket 21 so as to be shifted from each other up and down, the interval between the exterior casing 1 and the lower panel 103 can be adjusted. For this reason, the vertical position of the lower surface panel 103 can be adjusted according to the gap between the exterior casing 1 and the ceiling surface of FIG. 2 at the time of enforcement, and the position of the main body and the ceiling surface differs depending on the construction and building. Even in this case, the lower panel 103 can be easily aligned with the ceiling surface.

Embodiment 3 FIG.
FIG. 6 is a perspective view showing a schematic configuration of the bottom panel portion of the third embodiment of the simultaneous supply / exhaust ventilation fan according to the present invention. In FIG. 6, a lower panel 33 can be attached below the outer casing 1 of FIG. 1 via a panel outer frame 31. Here, on both sides of the panel exterior frame 31, wall surfaces 31a and 31b that define the traveling directions of the suction airflow A1 and the blown airflow B2 are formed.

Further, the lower panel 33 is provided with a separator 35 for preventing the suction airflow A1 and the blowout airflow B2 from intersecting. The lower panel 33 is divided into two along the separator 35, and is configured so that one side can be folded outward with the boundary as a fulcrum. Here, the lower surface panel 33 can expose the heat exchanger 9 of FIG. 1 by opening one of the divided sides.

The lower panel 33 is formed with a hook structure 34 that supports the lower panel 33 with the panel outer frame 31 when one side of the lower panel 33 is folded back.

Further, an exhaust-side dust removal filter 32 is attached to the panel outer frame 31 and is disposed between the blower outlet 17 and the panel inlet UI of FIG. The exhaust-side dust removal filter 32 can cover the entire panel suction port side of the panel exterior frame 31 partitioned by the separator 35.

Then, the suction airflow A1 sucked horizontally from the panel suction port UI is changed to a vertical direction by the separator 35 and passes through the exhaust-side dust removal filter 32. Then, after dust is removed by the exhaust-side dust removal filter 32, the exhaust flow A2 is guided to the outer casing 1 of FIG. Then, the air is exhausted from the exhaust port SO to the outside through the heat exchanger 9 and the exhaust fan 7a of FIG.

Here, the lower panel 33 is divided into two parts so that one side of the lower panel 33 can be folded outward, so that it is not necessary to remove the entire lower panel 33 during maintenance such as cleaning, and workability during maintenance can be improved. Can be improved.

Further, by dividing the lower panel 33 into two parts, it is not necessary to handle the entire lower panel 33 integrally, and the transportation and manufacture of the lower panel 33 can be facilitated.

In addition, an exhaust side dust removal filter 32 is disposed between the blower outlet 17 and the panel suction port UI of FIG. 1, and an air supply side dust removal filter 16 is disposed between the air supply port SI and the heat exchanger 9. Thus, even when only one side of the lower surface panel 33 is folded outward, the air supply side dust removal filter 16 and the exhaust side dust removal filter 32 can be easily taken out, and the workability during maintenance can be improved. .

Embodiment 4 FIG.
FIG. 7 is a cross-sectional view showing a fourth embodiment of the simultaneous supply / exhaust ventilation fan according to the present invention cut along the flowing direction of the suction airflow A1 and the blowout airflow B2. 7, in this simultaneous supply / exhaust type exhaust fan, an air filter 41 and a high-performance filter 42 are provided as the supply-side dust removal filter 16 of FIG.

Here, the air filter 41 and the high performance filter 42 can perform dust removal of the air supply air B1 supplied from the air supply port SI. The high performance filter 42 is configured to have a higher dust removal capability than the air filter 41. The air filter 41 and the high performance filter 42 are disposed between the air supply port SI and the heat exchanger 9, and the air filter 41 is disposed on the upstream side of the high performance filter 42.

Then, the outdoor air supply air B1 supplied from the air supply port SI sequentially passes through the air filter 41 and the high-performance filter 42, whereby the air supply air B1 is dedusted. Then, the air supply air B1 from which the air filter 41 and the high-performance filter 42 are sequentially removed is blown out from the blower outlet 17 through the heat exchanger 9 and the air supply blower 7b. And the advancing direction is changed horizontally by the lower surface panel 3, and it blows off horizontally in the room as the blowing airflow B2 from the panel blower outlet UO.

Here, by disposing the high-performance filter 42 between the air filter 41 and the heat exchanger 9, it is possible to suppress deterioration of the resistance (life) against clogging, and the high-performance filter 42 is air-conditioned. The filter 41 can be taken out integrally, and the workability at the time of maintenance can be improved.

Further, when the lower panel 33 of FIG. 6 is used as the lower panel 3 of FIG. 7, the high-performance filter 42 can be taken out integrally with the air filter 41 by opening only one of the divided ones. For this reason, it is not necessary to remove the entire lower surface panel 33 during maintenance such as cleaning, and the workability during maintenance can be further improved.

Embodiment 5 FIG.
FIG. 8 is a plan view showing a fifth embodiment of the simultaneous supply / exhaust type ventilation fan according to the present invention in a transparent manner. In FIG. 8, on the side surface of the outer casing 51, an exhaust port SO ′ for exhausting the exhaust air flow A2 to the outside of the outer casing 51 and an air inlet SI ′ for supplying the air flow B1 into the outer casing 51 are arranged in the horizontal direction. Has been placed. The outer casing 51 accommodates an exhaust fan 57a, an air supply fan 57b, a heat exchanger 59, and a circuit board 60.

Here, the exhaust fan 57a is provided with an exhaust blade 56a that forms the exhaust flow A2 and an exhaust motor 55a that rotates the exhaust blade 56a. The air supply fan 57b is provided with an air supply blade 56b that forms the air supply air B1 and an air supply motor 55b that rotates the air supply blade 56b. The exhaust blades 56 a are disposed so as to face the laminated surface of the heat exchanger 59. The exhaust motor 55a is disposed on the heat exchanger 59 side. Further, the supply blade 56b is arranged at the center of the outflow surface so as to face the outflow surface of the supply air flow B1 in the heat exchanger 59. The air supply motor 55b is disposed on the heat exchanger 59 side.

Further, the heat exchanger 59 can exchange heat between the exhaust flow A2 exhausted from the exhaust port SO ′ and the supply air flow B1 supplied from the air supply port SI ′. The heat exchanger 59 can have a hexahedral structure in which ventilation paths orthogonal to each other are alternately stacked. Here, the heat exchanger 59 is disposed on the upstream side of the air supply blower 57b. And the heat exchanger 59 is arrange | positioned so that the inflow surface of the exhaust flow A2 may oppose the lower surface panel 3 of FIG. Further, the air supply port SI ′ is arranged at the center of the inflow surface so as to face the inflow surface of the supply air flow B1 in the heat exchanger 59.

Further, the circuit board 60 can be equipped with a power supply circuit that supplies power to the exhaust motor 55a and the supply motor 55b, and a control circuit that controls the rotation of the exhaust motor 55a and the supply motor 55b.

The heat exchanger 59 and the circuit board 60 are arranged at one diagonal position of the outer casing 51, and the air supply fan 57 b and the exhaust fan 57 a are arranged at the other diagonal position of the outer casing 51. Has been.

Then, the suction airflow A1 horizontally sucked from the panel suction port UI is changed in the traveling direction to the vertical direction by the separator 12 of FIG. 2, and from the exhaust port SO ′ via the heat exchanger 59 and the exhaust fan 57a. It is exhausted to the outside as an exhaust flow A2.

On the other hand, the outdoor air supply air B1 supplied from the air supply port SI ′ is blown out from the air supply fan 57b through the heat exchanger 59 and the air supply fan 57b. And the advancing direction is changed horizontally by the lower surface panel 3 of FIG. 2, and it blows off horizontally in the room | chamber interior as the blowing airflow B2 from the panel blower outlet UO.

Here, the air supply port SI ′ is arranged at the center of the inflow surface of the air supply air B1 in the heat exchanger 59, and the air supply blade 56b is arranged at the center of the outflow surface of the air supply air B1 in the heat exchanger 59. As a result, it is possible to reduce the airway pressure loss, to reduce the bias of the airflow, and to improve the ventilation efficiency. Further, since the airflow flowing through the heat exchanger 59 can be made uniform, the air path can be reduced, and the simultaneous supply / exhaust type exhaust fan can be made compact.

Further, by arranging the exhaust motor 55a and the supply motor 55b on the heat exchanger 59 side, by opening only one side of the lower surface panel 33 in FIG. 6, the exhaust motor 55a and the supply motor 55b are accessed. It becomes possible to do. For this reason, it is not necessary to remove the entire lower surface panel 33 during maintenance of the exhaust motor 55a and the supply motor 55b, and workability during maintenance can be improved.

In the fifth embodiment described above, the air supply port SI ′ is arranged at the center of the inflow surface of the air supply air B1 in the heat exchanger 59, and the air supply is provided at the center of the outflow surface of the air supply air B1 in the heat exchanger 59. The method for arranging the blades 56b has been described. On the other hand, the air supply port SI ′ is arranged at the center of the inflow surface of the air supply air B1 in the heat exchanger 59, and the air supply blade 56b extends from the center of the outflow surface of the air supply air B1 in the heat exchanger 59. You may make it arrange | position in the position shifted | deviated. Alternatively, the air supply blade 56b is arranged at the center of the outflow surface of the air supply air B1 in the heat exchanger 59, and the air supply port SI 'is shifted from the center of the inflow surface of the air supply air B1 in the heat exchanger 59. You may make it arrange | position to.

Moreover, in embodiment mentioned above, the panel suction inlet UI and the panel blower outlet UO are formed in the lower surface panel 3 so as to oppose each other, the direction of the suction airflow A1 sucked into the panel suction inlet UI, and the panel blower The method has been described in which the airflow B2 blown from the outlet UO is arranged in the same direction so that the suction airflow A1 and the airflow B2 flow along the ceiling surface. On the other hand, the panel air inlet and the panel air outlet may be arranged so that the suction airflow A1 and the airflow B2 flow obliquely, or a plurality of panel air inlets may be provided. A plurality of panel outlets may be provided.

As described above, the simultaneous supply / exhaust type ventilation fan according to the present invention can arrange a heat exchanger on the upstream side of the air supply fan, and can be made compact, while the outdoor air supply air flow is supplied to the air supply fan. It is suitable for a method for preventing direct capture.

Claims (7)

An exterior casing in which an exhaust ventilation path and an air supply ventilation path independent from each other are formed;
A lower panel provided below the outer casing, and provided with a panel inlet and a panel outlet;
An exhaust blower that is housed in the exterior casing and sends the suction airflow sucked into the panel suction port to the exhaust ventilation path and exhausts it as an exhaust flow;
An air supply blower that is housed in the exterior casing and sends an air supply air supplied to the air supply ventilation path to the panel outlet and blows out as an air flow;
A simultaneous supply / exhaust type exhaust fan, comprising a heat exchanger disposed on the upstream side of the air supply blower and performing heat exchange between the exhaust flow and the air supply flow. The simultaneous supply / exhaust type exhaust fan according to claim 1, wherein the exhaust blower and the supply blower are disposed so as to face the mutually orthogonal surfaces of the heat exchanger, respectively. A power supply circuit that is arranged at a diagonal position of the outer casing where the heat exchanger is arranged and supplies power to the exhaust motor and the supply motor, and controls the rotation of the exhaust motor and the supply motor. The simultaneous supply / exhaust ventilation fan according to claim 2, further comprising a circuit board on which a control circuit is mounted. The heat exchanger has a hexahedral structure in which ventilation paths orthogonal to each other are alternately stacked, and the heat exchanger is disposed so that an inflow surface of the exhaust flow faces the lower panel. 4. A simultaneous supply / exhaust ventilation fan according to any one of items 1 to 3. An air supply blade of the air supply fan is disposed substantially at the center of the outflow surface so as to face the outflow surface of the supply airflow in the heat exchanger,
The air supply port for supplying the air supply air to the exterior casing is disposed at substantially the center of the inflow surface so as to face the inflow surface of the air supply air in the heat exchanger. Item 5. A simultaneous supply / exhaust ventilation fan according to Item 4. An air supply motor for rotating the air supply blades of the air supply fan is disposed on the heat exchanger side,
The simultaneous supply / exhaust type exhaust fan according to any one of claims 1 to 5, wherein an exhaust motor that rotates exhaust blades of the exhaust fan is disposed on the heat exchanger side. A first dust filter that is disposed on the air supply ventilation path upstream of the heat exchanger and performs dust removal of the air supply;
7. The apparatus according to claim 1, further comprising a second dust removal filter disposed between the first dust removal filter and the heat exchanger and having a higher dust removal capacity than the first dust removal filter. 2. A simultaneous supply / exhaust type ventilation fan according to item 1.

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