JP6978145B1 - Sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spraying device capable of preventing internal contamination without removing an atomization unit and capable of producing fine particles having a particle size fine enough to cause Brownian motion. .. SOLUTION: The spraying device of the present invention is an atomization tank capable of storing a liquid agent, an atomization device provided with an ultrasonic transducer for atomizing the liquid agent in the atomization tank to generate fine particles, and a predetermined rotation. A blower equipped with a blower member capable of holding the number and pushing the conveyed air into the atomization tank from an air outlet provided in the atomization tank, an outlet provided in the atomization tank for sending fine particles together with the conveyed air, and It is equipped with a baffle plate that is arranged to receive the liquid column of the liquid agent generated by the ultrasonic transducer in the atomization tank, and the baffle plate is arranged so as to block the conveyed air supplied from the blower port, and the suction port of the blower. A HEPA filter is attached to the. [Selection diagram] FIG. 2B

Description

The present invention relates to a technique for producing fine particles in a spraying device that sprays a liquid agent into a space.

Various spraying devices have been developed that atomize water or a liquid agent having a predetermined effect and spray it into a space.

In such a spraying device, in order to diffuse the sprayed fine particles into the space evenly and everywhere, the desired particle size, particularly the fine particles, are small enough to cause Brownian motion in the air. It is required to stably produce fine particles having a particle size.

As an example of such a spraying device, it may be necessary to spray a large amount of a liquid agent having a sterilizing action in a wide space such as a concert hall, a live house, a theater or a movie theater. In such a case, if the particle size of the particles is large, they will fall to the floor surface before reaching every corner of the space, and will also moisten the floor surface, wall surface, and various electric devices, resulting in slippage, mold, and mold. It is not preferable because it may cause equipment failure. Therefore, it is necessary to generate fine particles having a small particle size capable of causing Brownian motion so as to float in the air for a long time and exert a sterilizing effect.

Generally, in order to atomize and spray a liquid agent, in an atomization unit in which the liquid agent is stored, a liquid column generated by using an oscillator such as an ultrasonic oscillator is made to collide with a separator to make a large liquid. A technique is adopted in which a droplet and a small mist droplet are separated, and only the mist droplet is conveyed by using a conveying medium supplied from a blower or the like and diffused into the air. (Patent Document 1, Patent Document 2)

Japanese Unexamined Patent Publication No. 8-309248 Jitsukaisho 60-50728 Gazette

According to the techniques disclosed in Patent Document 1 and Patent Document 2, it is possible to obtain a spraying device capable of selectively spraying a mist droplet separated from a droplet. However, although the techniques disclosed in Patent Document 1 and Patent Document 2 can spray particles atomized by an ultrasonic transducer into the air, the danger of bacterial growth in the atomization unit can be dealt with. Not done.

In other words, the atmosphere sucked from the fan is blown into the atomization unit, and the atomized particles are pushed out by the blown air to perform spraying, but germs and bacteria are present in the atmosphere. The germs and bacteria in the atmosphere are sucked into the atomization unit through the fan.

However, in the techniques disclosed in Patent Document 1 and Patent Document 2, since there is no means for removing various germs and bacteria, the inhaled germs and bacteria grow in the atomization unit and adhere to the tank or the like to form mold. It causes generation and contamination.

In order to remove mold and contamination in such an atomization unit, it is necessary to remove and clean the atomization unit once, but for that purpose, specialized knowledge and tools are required and it takes time and effort.

In view of these problems, the present invention can prevent internal contamination without removing the atomization unit, and can generate fine particles having a particle size fine enough to cause Brownian motion. It is an object of the present invention to provide a possible spraying device.

The present invention provides the following solutions.

The spraying device according to the first feature is an atomization tank capable of storing the liquid agent, an atomization device provided with an ultrasonic transducer that atomizes the liquid agent in the atomization tank to generate fine particles, and a predetermined rotation speed. A blower that is equipped with a blower member that can hold the air, and pushes the conveyed air into the atomization tank from the air outlet provided in the atomization tank. It is equipped with a baffle plate that is arranged to receive the liquid column of the liquid agent generated by the ultrasonic transducer in the conversion tank, and the baffle plate is arranged so as to block the conveyed air supplied from the blower port, and is placed at the suction port of the blower. A HEPA filter is attached.

According to the invention according to the first feature, since the baffle plate is arranged so as to block the transport air supplied from the air outlet, the transport air supplied by the blower collides with the baffle plate to cause a pressure loss. This causes the transport pressure to drop, making it possible to transport only fine particles that allow Brownian motion. Although the transport air is directly blown to the baffle plate, the HEPA filter installed at the suction port of the blower removes bacteria and other germs existing in the sucked air, so that bacteria adhere to the baffle plate and its surroundings. It is possible to provide a spraying device capable of preventing contamination and mold growth in the atomization tank without causing the atomization.

The spraying device according to the second feature is the spraying device according to the first feature, and the blower port is provided on the top surface of the atomization tank, and the blower is a blower member extending in a substantially horizontal direction. It is provided with a suction port having a suction surface orthogonal to the rotation axis, and a discharge port connected to the air outlet and discharging conveyed air downward.

According to the invention according to the second feature, it has a suction port extending in a substantially horizontal direction perpendicular to the rotation axis, sucks the conveyed air from the horizontal direction, and is displaced downward from the suction port in a substantially perpendicular direction. Since it is a type that discharges air, it is possible to maintain a strong suction pressure to the blower. Therefore, a large pressure loss can be caused while maintaining the air volume, a low pressure and a large flow rate of the conveyed air can be generated, and a large amount of fine fine particles capable of Brownian motion can be generated.

At this time, various bacteria and bacteria in the air are sucked into the blower by the strong suction force, and these bacteria are removed by the HEPA filter installed in the suction port. In particular, since the suction power is strong, bacteria contained in the sucked air can be reliably captured by the HEPA filter.

Moreover, since the HEPA filter is attached to the suction port that has a suction surface orthogonal to the rotation axis of the blower member and sucks air in a substantially horizontal direction, the installation area of the HEPA filter can be widened, which is effective and effective. It is possible to capture bacteria and germs in the air with a small pressure loss.

The spraying device according to the third feature is the spraying device according to the first or second feature, and has a drain discharge mechanism for discharging the liquid agent from the atomization tank.

According to the invention according to the third feature, the inside of the atomization tank can be kept clean only by discharging the liquid agent remaining in the atomization tank by the drain discharge mechanism. In particular, since a HEPA filter is installed at the suction port of the blower, bacteria and bacteria do not flow in from the outside air. Therefore, it is not necessary to remove and clean the atomization tank, and the inside of the atomization tank can be kept clean only by discharging the residual liquid agent without specialized knowledge or special tools.

According to the present invention, it is possible to prevent internal contamination without removing the atomization unit, and it is possible to generate fine particles having a particle size fine enough to cause Brownian motion. Can be provided.

FIG. 1A is a perspective view of the spraying device 1 according to the present embodiment. FIG. 1B is a front view showing a state in which the cover member 80 of the spraying device 1 according to the present embodiment is removed. FIG. 1C is a right side view of the spray device 1 according to the present embodiment with the cover member 80 removed. FIG. 1D is a rear view of the spray device 1 according to the present embodiment with the cover member 80 removed. FIG. 2A is a partially enlarged perspective view of the atomization unit 10 according to the present embodiment. FIG. 2B is a schematic view of the atomization unit 10 according to the present embodiment in a state of use. FIG. 3A is a perspective view of the blowout unit 30 of the spray device 1 according to the present embodiment. FIG. 3B is a plan view of the blowout unit 30 of the spray device 1 according to the present embodiment. FIG. 3C is a front view of the blowing unit 30 of the spraying device 1 according to the present embodiment. FIG. 3D is a bottom view of the blowout unit 30 of the spray device 1 according to the present embodiment. FIG. 4A is a front view of the installation unit 60 according to the present embodiment. 4B is a sectional view taken along the line AA of FIG. 4A. FIG. 4C is a bottom view of the base member 61 according to the present embodiment. FIG. 5A is a plan view of the top member 63 according to the present embodiment in a state where the top member cover 63g is removed. 5B is a sectional view taken along the line AA of FIG. 4D. FIG. 5C is a bottom view of the top member 63 according to the present embodiment. FIG. 5D is a plan view of the top member cover 63 g according to the present embodiment. FIG. 5E is a perspective view of the top member 63 and the blowout unit 30 when the liquid agent is replenished. FIG. 6 is a flowchart of a liquid agent atomizing method using the atomizing device 1 according to the present embodiment. FIG. 7A shows a schematic diagram of the atomization unit 10 according to the second modification in a state of use. FIG. 7B shows a schematic diagram of the atomization unit 10 according to the modified example 3 in a state when it is used. FIG. 7C shows a schematic diagram of the atomization unit 10 according to the modified example 3 in a state when it is used. FIG. 7D shows a schematic diagram of the atomization unit 10 according to the modified example 3 in a state when it is used.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. It should be noted that this is only an example, and the technical scope of the present invention is not limited to this.

[Overall configuration of spraying device]
The overall configuration of the spraying apparatus 1 according to the present embodiment will be described with reference to FIG. 1A shows a perspective view, FIG. 1B shows a front view with the cover member 80 removed, FIG. 1C shows a right side view with the cover member 80 removed, and FIG. 1D shows the cover member 80 removed. The rear view of the state is shown. In FIG. 1B, the liquid level sensor 15, the control unit 50, and the power supply unit 70 are omitted, and in FIG. 1C, the power supply unit 70 is omitted.

As shown in FIGS. 1A to 1D, the spray device 1 of the present embodiment stores an atomization unit 10 that atomizes water or a liquid agent to generate and convey fine particles, and a liquid agent for supplying the atomization unit. The tank unit 20, the blowout unit 30 that blows out the fine particles generated by the atomization unit 10, the supply unit 40 that sends out the fine particles generated by the atomization unit 10 and supplies the liquid agent to the atomization unit 10, respectively. It is composed of a control unit 50 that controls equipment, an installation unit 60 that fixes each unit, a power supply unit 70 that supplies power to each equipment, and a cover member 80 that covers each unit.

Further, in the present embodiment, it is assumed that a chlorous acid aqueous solution having a sterilizing effect is used as the liquid agent, and the spraying device 1 is used as a sterilizing device for killing viruses and bacteria floating in the air. Ru.

[Structure of atomization unit 10]
The atomization unit 10 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 2A is a partially enlarged perspective view of the atomization unit 10, and FIG. 2B is a schematic view showing a state of the atomization unit 10 when it is used. In FIG. 2A, the blower 13 and the HEPA filter 13f are not shown.

As shown in FIG. 2A, the atomization unit 10 has an atomization tank 11 having a predetermined width and capable of storing the liquid agent, and an ultrasonic transducer 12a that atomizes the liquid agent in the atomization tank 11 to generate fine particles. , 12b, 12c ... Are provided with an atomizing device 12 in which a plurality of, 12b, 12c ... To receive the liquid column of the liquid agent generated by the blower 13 and the ultrasonic transducers 12a, 12b, 12c ... It includes two baffle plates 14a and 14b to be arranged, and a liquid level sensor 15 for detecting the liquid level in the atomization tank 11.

The atomization tank 11 is for storing and atomizing the liquid agent supplied from the tank unit 20, and exhibits a substantially rectangular parallelepiped shape having a predetermined width. A supply port 11a is formed on the top surface 11d of the atomization tank 11, and the liquid material supplied from the tank unit 20 via the liquid material supply pump 41 of the supply unit 40 described later is atomized via the supply port 11a. It flows into 11. Further, a blower port 11b is formed on the top surface 11d of the atomization tank 11, and the conveyed air from the blower 13 flows into the atomization tank 11 through the blower port 11b. Further, a delivery port 11c is formed on the top surface 11d of the atomization tank 11, and the fine particles atomized in the atomization tank 11 are sent out from the delivery port 11c together with the conveyed air. The atomization tank 11 is fixed to the lower base 61 of the installation unit 60, which will be described later, by a well-known means such as screwing. At this time, the atomization tank 11 is arranged inside the region defined by the six columnar members 62 of the installation unit 60. The atomization tank 11 is formed of polyethylene terephthalate (PET). Further, in the present embodiment, the top surface 11d of the atomization tank 11 is formed by a top surface member mounted on the main body portion of the atomization tank 11.

Further, the atomization tank 11 is provided with a drain discharge mechanism (not shown). The drain discharge mechanism is composed of a discharge port drilled in the lower part of the side surface of the atomization tank 11, a flow path connected to the discharge port and bent substantially downward, and a discharge valve provided in the middle of the flow path. .. In normal use, the discharge valve is closed and closed, but by opening the discharge valve and opening it, the liquid agent remaining in the atomization tank 11 can be discharged via the flow path. The flow path connected to the atomization tank 11 may be configured to penetrate the cover member 80, and the portion bent substantially below the flow path and the discharge valve may be located outside the cover member 80. good. By doing so, the residual liquid agent can be discharged without removing the cover member 80.

The atomization device 12 is a device including a plurality of ultrasonic transducers 12a, 12b, 12c ... Disposed at the bottom of the atomization tank 11, and is operated by electric power supplied from the power supply unit 70 to superimpose. It emits a sound wave. In the atomization device 12 according to the present embodiment, two rows of ultrasonic transducers 12a, 12b, 12c, 12d, 12e, and 12f are arranged in a plane in the depth direction and three rows in the width direction of the atomization tank 11. The liquid agent is atomized over a wide area in the atomization tank 11 to generate fine particles. When the atomizing device 12 is activated, each of the ultrasonic vibrators 12a, 12b, 12c ... Arranged from the liquid surface is directed upward of the respective ultrasonic vibrators 12a, 12b, 12c ... A liquid column is generated.

The blower 13 includes a blower member (not shown) capable of controlling the rotation speed according to a signal from the control unit 50, and transports air for transporting the atomized liquid agent into the atomization tank 11 through the blower port 11b. A discharge port (not shown) for discharging the conveyed air is connected to the air outlet 11b of the atomization tank 11 and is arranged so as to be able to blow downward. In the present embodiment, the blower 13 is driven by the electric power supplied from the power supply unit 70, and controls the rotation speed by changing the applied voltage according to the signal from the control unit 50.

Further, as shown in FIG. 2B, the blower 13 has a discharge port that is substantially vertically downward and a suction port that is orthogonal to the discharge port, and is formed as a centrifugal fan that blows out air sucked from the axial direction of the rotating shaft in the radial direction. Will be done. That is, air is sucked in the horizontal direction from the axial direction of the rotation axis of the blower member (not shown) arranged substantially horizontally, the pressure is applied by the blower member, and the air is pushed out in the radial direction from the discharge port substantially vertically downward. It is supplied into the atomization tank 11.

The blower 13 in the present embodiment has a suction port extending in a substantially horizontal direction perpendicular to the rotation axis, sucks the conveyed air from the horizontal direction, and discharges the conveyed air downward displaced in the substantially perpendicular direction from the suction port. Because of this type, the suction pressure to the blower can be maintained strongly. Therefore, a large pressure loss can be caused while maintaining the air volume, a low pressure and a large flow rate of the conveyed air can be generated, and a large amount of fine fine particles capable of Brownian motion can be generated.

Further, at this time, since the HEPA filter 13f is attached to the suction port which has a suction surface orthogonal to the rotation axis of the blower member and sucks air in a substantially horizontal direction, the installation area of the HEPA filter 13f can be widened. It is possible to effectively capture bacteria and other germs in the air. Moreover, since the blower 13 in the present embodiment has the form of a centrifugal fan that sucks in from the axial direction of the rotation axis of the blower member and discharges from the radial direction, the suction force is strong, so that the bacteria contained in the sucked air are surely HEPA filter. Can be captured with.

Further, even if the same bacteria removal efficiency is exhibited, the effect can be exhibited with a small pressure loss by taking a large installation area of the HEPA filter 13f, so that it is not necessary to install an excessive blower. In particular, in the spray device of the present invention, as will be described later, the transfer air blown into the atomization tank 11 collides with the baffle plates 14a and 14b to cause a pressure loss in the atomization tank 11 and cause Brownian motion. Since only the small fine particles that can be produced are transported, it must be avoided that a large pressure loss occurs before being supplied into the atomization tank 11.

It is preferable that the HEPA filter 13f attached to the suction port is detachably formed so that it can be washed regularly.

Next, the two baffle plates 14a and 14b will be described. The baffle plates 14a and 14b are flat plate-shaped members made of stainless steel, and their basic function is to divide the droplets generated by the ultrasonic vibration of the atomizing device 12 into large droplets and small fine particles. be. That is, when a liquid column is generated above the respective ultrasonic transducers 12a, 12b, 12c ..., the droplets having a large particle size contained in the liquid column collide with the baffle plates 14a, 14b and flow downward as mist. It returns to the liquid layer stored in the conversion tank 11. On the other hand, the mist droplets having a small particle size contained in the liquid column are suspended in the vicinity of the baffle plates 14a and 14b, and are conveyed to the outlet 11c along with the conveyed air supplied by the blower 13. In this way, the baffle plates 14a and 14b can separate the droplets having a large particle size and the mist droplets having a small particle size generated by the ultrasonic vibration.

In addition to such basic functions, the baffle plates 14a and 14b according to the present embodiment are further arranged as follows so as to be able to exert the functions described later.

The baffle plate 14a (first baffle plate in the present invention) according to the present embodiment is an ultrasonic wave arranged below the air outlet 11b and on one end side of the atomization tank 11 in the width direction of the ultrasonic vibrator. It is arranged above the vibrators 12a and 12d.

Further, the baffle plate 14a has a connection portion 14ac (first connection portion in the present invention) having one end connected to the top surface 11d of the atomization tank 11, and the other end is one end side in the width direction of the atomization tank 11. The atomizing tank 11 is arranged so as to be inclined diagonally downward toward one end side in the width direction so as to have an edge portion 14ae (first edge portion in the present invention) disposed at a predetermined distance from the side surface. ..

The baffle plate 14b (second baffle plate in the present invention) is an ultrasonic wave arranged below the supply port 11a and the delivery port 11c and on the other end side of the atomization tank 11 in the width direction of the ultrasonic vibrator. It is arranged above the vibrators 12c and 12f.

Further, the baffle plate 14b has a connection portion 14bc (second connection portion in the present invention) having one end connected to the top surface of the atomization tank 11, and the other end is the other end side in the width direction of the atomization tank 11. That is, it is opposite to the baffle plate 14a so as to have a side surface opposite to the side on which the baffle plate 14a is arranged and an edge portion 14be (second edge portion in the present invention) arranged at a predetermined interval. It is arranged so as to be inclined diagonally downward toward the direction, that is, toward the other end side in the width direction of the atomization tank 11.

That is, the end portion of the baffle plate 14a is arranged so as to be separated from the side surface on one end side in the width direction of the atomization tank 11 at a predetermined distance, and the end portion of the baffle plate 14b is the side surface on the other end side in the width direction of the atomization tank 11. And are arranged so as to be separated from each other by a predetermined interval.

The air outlet 11b is provided on one end side in the width direction with respect to the connection portion 14ac of the baffle plate 14a, and the air outlet 11c is provided on the other end side in the width direction with respect to the connection portion 14bc of the baffle plate 14b.

The liquid level sensor 15 is for detecting the liquid level of the liquid agent stored in the atomization tank 11, and in the present embodiment, a float type sensor arranged outside the atomization tank 11 is used. Will be done. In this case, the atomization tank 11 is provided with a flow hole (not shown) at an appropriate height, and the liquid agent flows into the liquid level sensor 15 through the flow hole. Since the atomization tank 11 and the liquid level sensor 15 connected through the flow hole are placed under the same pressure, the liquid level in the liquid level sensor 15 and the liquid level in the atomization tank 11 have the same value. In this way, the liquid level of the atomization tank 11 is detected by the external liquid level sensor 15, but the liquid level is not limited to this as long as it can be measured. The liquid level sensor 15 in the present embodiment is used to detect a predetermined first liquid level h1 and a second liquid level h2 higher than the first liquid level h1.

Like the liquid level sensor 15, the stop sensor 16 is for detecting the liquid level of the liquid agent stored in the atomization tank 11, but as will be described later, the operation of the spray device 1 is forced. It detects the liquid level for determining that it stops at.

As described above, the atomization tank 11 is arranged inside the region defined by the six columnar members 62 of the installation unit 60, and similarly, each device constituting the atomization unit 10 also has six. It is disposed inside the region defined by the columnar member 62 of. In other words, when viewed in a plane, the plurality of columnar members 62 are arranged so as to be located on the outermost side, and each device is located inside the region surrounded by the plurality of columnar members 62.

[Structure of tank unit 20]
The tank unit 20 is for temporarily storing the liquid agent to be supplied to the atomization tank 11, and is arranged above the atomization unit 10. The tank unit 20 has a substantially rectangular parallelepiped shape, and an inflow port communicating with the liquid agent supply port 63e of the top member 63, which will be described later, opens on the upper surface thereof. Further, a connection port connected to the liquid agent supply pipe 42 of the supply unit 40 opens on the bottom surface. The tank unit 20 is fixed to the columnar member 62 by a well-known means such as screwing so as to be disposed inside the region defined by the six columnar members 62 of the installation unit 60 described later. At this time, a flange portion may be provided on the outer surface of the tank unit 20 so as to be connected to the columnar member 62 at the flange portion. A recess 20a is formed in the substantially central portion of the tank unit 20 in the vertical direction so that the supply pipe 43 for supplying fine particles and transport air from the atomization tank 11 to the blowout unit 30 can pass through the recess 20a. It is composed. The capacity of the tank unit 20 is larger than the capacity of the atomization tank 11, and the liquid agent can be supplied to the atomization tank 11 a plurality of times by supplying the liquid agent to the tank unit 20 once. It is possible to continue driving over time. The tank unit 20 is formed of polyethylene terephthalate (PET) in the same manner as the atomization tank 11.

[Structure of blowout unit 30]
The balloon unit 30 will be described with reference to FIG. 3A is a perspective view of the blowout unit 30, FIG. 3B is a plan view of the blowout unit 30, FIG. 3C is a front view of the blowout unit 30, and FIG. 3D is a bottom view of the blowout unit 30.

The blowout unit 30 is for blowing out the fine particles generated by the atomization unit 10 together with the conveyed air, and is installed so as to project upward from the top member 63 arranged at the uppermost portion of the installation unit 60. The blowout unit 30 is formed of a bottomless, substantially tubular blowout member 31 having a predetermined width, depth and height, and is inclined diagonally upward at the upper end and is formed in a slit shape in the width direction. Have. At the lower end of the blowout member 31, a plurality of locking claws (not shown) that can be inserted into the locking recess 63b of the top member 63, which will be described later, are formed.

A partition wall 33 is projected from the inside of the top surface inside the blowout member 31, and by connecting the supply pipe 43 of the supply unit 40 to the area surrounded by the partition wall 33, fine particles from the atomization unit 10 are formed. Conveyed air flows into the blowout unit 30. This point will be described with reference to a plan view of the top member 63 shown in FIG. 5A in a state where the top member cover 63g is removed. The top surface of the top member 63 is connected to the supply pipe 43 of the supply unit 40. Connection port 63a opens. At the same time, a locking recess 63b is formed on the top surface of the top member 63 to which a locking claw portion (not shown) formed at the lower end portion of the blowout unit 30 is locked. Then, when the locking claw portion of the blowout unit 30 is locked to the locking recess 63b of the top member 63, the lower end of the partition wall 33 is sealed and adhered to the periphery of the connection port 63a of the top member 63, and the partition wall is brought into close contact with the partition wall 33. The inner region of 33 and the supply pipe 43 of the supply unit 40 are connected via the connection port 63a.

A slit-shaped spray port 32 inclined diagonally upward is formed at the upper end of the inner region of the partition wall 33, and the fine particles and the conveyed air flowing into the inner region of the partition wall 33 from the connection port 63a are discharged to the spray port 32. Sprayed from.

[Structure of supply unit 40]
Returning to FIG. 1, the configuration of the supply unit 40 will be described.

As shown in FIGS. 1B to 1D, the supply unit 40 includes a liquid agent supply pump 41 for supplying the liquid agent stored in the tank unit 20 to the atomization unit 10, and a tank unit 20 connected to the liquid agent supply pump 41. It is composed of a liquid agent supply pipe 42 for circulating the liquid agent between the atomization units 10 and a supply pipe 43 for supplying the fine particles and the conveyed air generated by the atomization unit 10 to the spray unit.

The liquid agent supply pipe 42 connects a connection port (not shown) formed on the bottom surface of the tank unit 20 to the inlet of the liquid agent supply pump 41, and is formed on the outlet of the liquid agent supply pump 41 and the top surface of the atomization tank 11. Connect to the supply port 11a.

That is, by using the liquid agent supply pump 41 and the liquid agent supply pipe 42, the liquid agent stored in the tank unit 20 can be supplied into the atomization tank 11 from the supply port 11a as needed.

In the present embodiment, the tube pump is used as the liquid agent supply pump 41, but the present invention is not limited to this.

The supply pipe 43 connects the delivery port 11c formed on the top surface of the atomization tank 11 and the connection port 63a of the top member 63.

That is, the fine particles generated in the atomization tank 11 are sent out from the delivery port 11c together with the transport air, flow through the supply pipe 43, and are inside the partition wall 32 formed in the blowout unit 30 from the connection port 63a of the top member 63. After flowing into the region, it is sprayed from the spray port 31.

In the present embodiment, the supply pipe 43 is composed of a bellows-shaped flexible tube, but is not limited thereto. Further, the supply pipe 43 passes through a concave portion in the vertical direction formed in a substantially central portion of the tank unit 20 to connect the delivery port 11c and the connection port 63a.

[Configuration of control unit 50]
The control unit 50 controls the drive of the blower 13 and the drive of the liquid agent supply pump 41, and is composed of a well-known circuit, switch, or the like.

[Configuration of installation unit 60]
The installation unit 60 will be described with reference to FIG. 4A shows a front view of the installation unit 60, FIG. 4B shows a sectional view taken along the line AA of FIG. 4A, and FIG. 4C shows a bottom view of the base member 61.

The installation unit 60 is for fixing each of the above units and members, and is composed of a lower base 61, a plurality of columnar members 62, a top member 63, and a plurality of legs 64.

The lower base 61 is a flat rectangular plate-shaped member located at the lower end of the installation unit 60, and fixes the atomization tank 11 and the lower ends of the plurality of columnar members 62. In the present embodiment, the four sides of the lower base 61 are provided with rising portions 61a protruding upward, and at each rising portion 61a, the lower ends of the plurality of columnar members 62 are fixed by screwing (not shown). Further, at the four corners of the lower base 61, connection ports 61b for connecting the legs 64 for installing the spray device 1 on the floor surface are provided. A female screw is formed in the connection port 61b, and a male screw portion formed in the leg portion 64 is rotatably connected.

The columnar member 62 is a plurality of columnar members arranged in a substantially vertical direction, and a region inside a region defined by the plurality of columnar members is defined as a region in which each unit is arranged, and each unit is defined. It is a member for fixing. As shown in FIG. 4B, in the present embodiment, six columnar members 62 are used to define an inner region in which each unit is arranged. The lower end of each columnar member 62 is fixed to the rising portion 61a of the lower base 61, and the upper end is fixed to the top member 63 by screwing (not shown). That is, the six columnar members 62 connect the lower base 61 and the top member 63. In FIGS. 4A and 4B, the thickness of the rising portion 61a and the columnar member 62 is drawn large to assist understanding.

Then, in the intermediate portion of the columnar member 62, a fixing portion (not shown) for fixing the tank unit 20, the control unit 50, and the like is arranged.

In particular, above the columnar member 62, a plurality of insertion holes (not shown) through which bolts functioning as one of the fixing portions for fixing the tank unit 20 can be inserted are arranged at the same height, and the tank unit 20 has a plurality of insertion holes. The tank unit 20 can be fixed to the columnar member 62 by screwing the bolt to the female screw portion arranged at a predetermined height.

In this way, by arranging each device in the region surrounded by the plurality of columnar members 62 arranged in the vertical direction, the devices are arranged so as to be stacked in the vertical direction. Since the columnar member 62 is arranged on the outermost side when viewed on a plane, the cover member 80 described later can be arranged so as to be wound around the columnar member 62. At this time, since the cover member 80 has a shape without unevenness, the spraying device 1 equipped with the cover member 80 can obtain an appearance that gives a neat impression suitable for various environments.

Next, the top member 63 will be described with reference to FIG. 5A is a plan view of the top member 63 with the top member cover 63g removed, FIG. 5B is a sectional view taken along the line AA of FIG. 5A, FIG. 5C is a bottom view of the top member 63, and FIG. 5D is a top member. A plan view of the cover 63 g is shown, and FIG. 5E shows a perspective view of the top member 63 and the blowout unit 30 when the liquid agent is replenished.

The top member 63 is a member located at the uppermost portion of the installation unit 60, and is a member fixed to the upper end portion of each columnar member 62 and also to fix the blowout unit 30 at the uppermost portion of the entire spraying device 1. As shown in FIGS. 5B and 5E, the top member 63 is composed of a bottomless, substantially rectangular tubular member having side walls and rounded corners.

As shown in FIGS. 5A and 5C, a connection port 63a connected to the supply pipe 43 of the supply unit 40 opens on the top surface of the top member 63. At the same time, a locking recess 63b is formed on the top surface of the top member 63 to which a locking claw portion (not shown) formed at the lower end portion of the blowout member 31 is locked.

Further, the top surface of the top member 63 is provided with a top surface recess 63c whose height is locally lowered downward and a door portion 63d that can be opened and closed to cover the top surface recess 63c, and the top surface recess 63c. Is provided with a liquid agent supply port 63e connected to an inflow port (not shown) formed on the upper surface of the tank unit 20. A female screw is formed on the inner surface of the liquid agent supply port 63e, and a cap member (not shown) having a male screw portion is screwed.

To connect the top member 63 and the plurality of columnar members 62, bolts (not shown) are inserted through a plurality of screw holes 63f provided on the top surface, and the bolts are inserted into the female threaded portions (not shown) provided at the upper ends of the columnar members 62. It is done by screwing to. Alternatively, instead of providing the female thread portion on the columnar member 62, bolts and nuts may be used for connection. After connecting the top member 63 and the columnar member 62, the top surface of the top member 63 is covered with the top member cover 63g shown in FIG. 5D, as shown in FIG. 5E.

[Configuration of power supply unit 70]
The power supply unit 70 is a unit that connects to a household or commercial power source and supplies electric power to each device. Specifically, the power supply unit 70 includes a cable connected to the power strip, a power switch 71 of the spraying device 1 itself, and the like.

[Structure of cover member 80]
The cover member 80 is a member that is arranged around the plurality of columnar members 62 and covers each device.

Specifically, as shown in FIG. 1A, the top member 63 is wound around the plurality of columnar members 62 so as to cover the height from the lower side to the lower base 61. The cover member 80 is formed by bending an elastic stainless steel plate-shaped member by bending.

Here, in configuring the spraying device 1, since each device such as the atomization unit 10 and the tank unit 20 is arranged in the area surrounded by the plurality of columnar members 62 arranged in the vertical direction, it is flat. When viewed, the columnar member 62 is arranged on the outermost side. Therefore, the cover member 80 can be arranged so as to be wound around the columnar member 62. At this time, since the cover member 80 has a shape without unevenness, the spraying device 1 equipped with the cover member 80 can obtain an appearance that gives a neat impression suitable for various environments.

[Spraying method using spraying device 1]
Next, a method of atomizing the liquid agent using the atomizing device 1 according to the present embodiment will be described with reference to the flowchart shown in FIG.

[Step S100: Replenishment of liquid agent]
First, prior to starting the atomizing device 1, the tank unit 20 is replenished with a liquid agent (step S100).

When replenishing the liquid agent to the tank unit 20, the user opens the openable door portion 63d provided on the top surface of the top member 63, removes the cap (not shown) attached to the liquid agent replenishment port 63e, and removes the cap on the top surface. The liquid agent is poured into the liquid agent supply port 63e formed in 63c. After replenishing the liquid, close the cap and close the door 63d.

As described above, since the liquid agent supply port 63e is covered with the door portion 63d that can be opened and closed, the liquid agent supply port 63e can be covered with the door portion 63 when not in use, and a neat appearance can be maintained. In particular, since the liquid agent supply port 63e is formed in the top surface recess 63c, when the door portion 63d is closed, the top surface of the top member 63 has the same plane except for the blowout unit 30, so that particularly excellent appearance is exhibited. can.

[Step S110: Start of supply of liquid agent]
When the liquid agent is replenished to the tank unit 20 in step S100, the user connects a power cord (not shown) constituting the power supply unit 70 to a general household or commercial power supply, and similarly, a power source constituting the power supply unit 70. Turn on the switch 71. When the power switch 71 is turned on, the control unit 50 operates the liquid agent supply pump 41 and starts supplying the liquid agent charged into the tank unit 20 to the atomization tank 11 (step S110).

The liquid agent stored in the tank unit 20 is supplied to the atomizing tank 11 as follows. That is, the liquid agent supply pump 41 is driven by the signal from the control unit 50, and the liquid agent flows out from the connection port (not shown) formed on the bottom surface of the tank unit 20, and passes through the liquid agent supply pipe 42 and the liquid agent supply pump 41. It flows into the atomization tank 11 from the supply port 11a formed on the upper surface of the atomization tank 11.

[Steps S120 to S130: Determination of the second liquid level-Stopping the supply of the liquid agent]
At the same time as the supply of the liquid agent is started in step S110, the control unit 50 starts the determination of the liquid level by the liquid level sensor 15, and has the liquid level in the atomization tank 11 reached the predetermined second liquid level h2? Is determined (step S120).

When the liquid level detected by the liquid level sensor 15 does not reach the second liquid level h2, that is, when N in step S120, the control unit 50 continues the supply by the liquid agent supply pump 41 and reaches the second liquid level h2. In the case, that is, when it becomes Y in step S120, the control unit 50 stops the supply by the liquid agent supply pump 41 (step S130).

[Step S140: Atomization of liquid agent]
When the supply of the liquid agent is stopped in step S130, the control unit 50 starts atomization of the liquid agent in the atomization unit 10 (step S140). The start of the atomization operation in step S140 may be controlled so that the liquid level detected by the liquid level sensor 15 reaches the first liquid level h1 as a trigger. In that case, the atomization operation and the supply of the liquid agent are performed at the same time, but it is preferable that the atomization operation can be started at an early stage.

When atomizing the liquid agent in the atomization unit 10, the control unit 50 starts blowing the conveyed air by the blower 13 and also starts atomizing the liquid agent by the atomizing device 12.

As the atomizing device 12 operates, as shown in FIG. 2B, a liquid column rises above the ultrasonic transducers 12a, 12b, 12c ... The liquid column contains particles having various particle sizes, and the liquid is opposed to the baffle plates 14a and 14b arranged so as to be inclined diagonally downward above the ultrasonic transducer so that the liquid column comes into contact with the liquid column. Droplets with a large particle size contained in the column come into contact with each other and flow downward, return to the stored liquid layer, and only droplets with a small particle size float in the air.

Further, with the operation of the blower 13, the conveyed air is supplied downward from the blower port 11b, and the mist droplets having a small particle size floating in the air are conveyed and sent out from the outlet 11c.

At this time, the baffle plate 14a provided on one end side in the width direction of the atomization tank 11 is arranged below the air outlet 11b and above the ultrasonic vibrators 12a and 12d on one end side in the width direction. Therefore, the conveyed air supplied from the blower 13 is prevented from directly reaching the liquid level or the liquid column, and the liquid column or the droplet rising from the liquid surface flows in from the blower port 11b and reaches the blower 13 directly. Is prevented. Therefore, the atomization of the liquid agent and the supply of the conveyed air function without interfering with each other, thereby ensuring the performance of sorting the particle size of the particles.

Further, the conveyed air supplied from the blower 13 collides with one side surface of the baffle plate 14a and flows along the one side surface of the baffle plate 14a, so that a pressure loss occurs at that time and the particles are conveyed. The pressure to do is reduced. Since the pressure of the transport air decreases, only fine particles smaller than the particles that are normally large enough to be transported are transferred from the liquid agent separated into droplets and small particles by colliding with the baffle plates 14a and 14b. Transported by.

Further, when the conveyed air flowing along one side surface of the baffle plate 14a flows out from between the edge portion 14ae and the one end side surface of the atomization tank 11, the other side surface of the baffle plate 14a, that is, A negative pressure region is formed in the region where the liquid column contacts, but since the pressure of the transport air is further reduced in the negative pressure region, only fine particles having a very small particle size cannot be transported. It will fall to the lower liquid level. Therefore, only fine particles having a particle size small enough to cause Brownian motion are conveyed downstream by the conveyed air.

With such a mechanism, it is possible to transport fine particles by transport air rather than simply receiving a liquid column with a baffle plate, and it is possible to selectively spray only fine particles small enough to cause Brownian motion. A spraying device can be provided.

Further, the baffle plate 14a has a connection portion 14ac (first connection portion) having one end connected to the top surface 11d of the atomization tank 11, and the other end is defined as a side surface on one end side in the width direction of the atomization tank 11. It is arranged so as to be inclined diagonally downward so as to have an edge portion 14ae (first edge portion) that separates the above. Then, the conveyed air supplied from the blower 13 is arranged so as to project from the inside to the outside so as to pass through the outer peripheral side in the atomization tank 11.

Due to such a structure of the baffle plate 14a, the conveyed air supplied downward from the air outlet 11b changes the direction of the flow diagonally downward according to the arrangement direction of the baffle plate 14a, and is located on one end side of the atomization tank 11. It passes through the gap formed between the side surface and the edge portion 14ae of the baffle plate 14a and reaches the bottom portion near the liquid layer of the atomization tank 11. The conveyed air that has reached the bottom changes direction toward the side surface on the other end side, and circulates in the vicinity of the liquid level toward the side surface on the other end side of the atomization tank 11. Then, the direction is changed upward near the side surface on the other end side of the atomization tank 11, and the flow is directed toward the delivery port 11c formed on the top surface 11d. Further, a part of the conveyed air passes through the gap formed between the side surface on one end side of the atomization tank 11 and the other end portion of the baffle plate 14a, and then reaches the surface on the side receiving the liquid column of the baffle plate 14a. After wrapping around, a swirling flow is formed in the atomization tank 11 and flows out from the delivery port 11c.

In this way, the conveyed air supplied downward from the air outlet 11b forms a gentle swirling flow inside the atomization tank 11 according to the arrangement direction of the baffle plate 14a, and a part of the transport air is on the side receiving the liquid column. After wrapping around the surface of the surface, a part of the atomizing tank 11 passes through the outer peripheral side of the tank 11 and is sent out from the delivery port 11b.

Then, the conveyed air supplied from the air outlet 11b passes through the outer peripheral side of the atomization tank 11 to form a gentle swirling flow, so that fine particles and further fine particles are further affected by the effect of centrifugal force accompanying the generation of the swirling flow. It is separated into fine particles, and only the fine particles are transported to the transport air.

Further, in the present embodiment, the air outlet 11b and the air outlet 11c are provided on the top surface 11d of the atomization tank 11 at locations opposite to each other with the baffle plate 14a interposed therebetween.

Therefore, a swirling flow sandwiching the baffle plate 14a can be formed, and the effect of centrifugation by the swirling flow can be enhanced.

In this way, the atomization unit 10 in the present embodiment selectively generates and sends out only fine particles small enough to cause Brownian motion by the cooperation of the blower 13 and the baffle plate 14a. Can be done.

Further, in the present embodiment, the baffle plate 14b has a connection portion 14bc (second connection portion) having one end connected to the top surface of the atomization tank 11, and the other end in the width direction of the atomization tank 11 and the like. Diagonally downward in the direction opposite to the baffle plate 14a so as to have an edge portion 14be (second edge portion) that separates a predetermined distance from the side surface on the end side, that is, the side opposite to the side on which the baffle plate 14a is arranged. Arranged toward you.

The baffle plate 14b is arranged below the delivery port 11c and above the ultrasonic vibrators 12c and 12f on the other end side in the width direction. Therefore, droplets having a large particle size contained in the liquid column generated by the ultrasonic vibrators 12c and 12f come into contact with the lower surface of the baffle plate 14b and flow downward, return to the stored liquid layer, and have a particle size. Only small fog droplets float in the air.

At this time, since the pressure of the transport air is lowered by the contact with the baffle plate 14a, only fine particles smaller than the particles having a size that can be normally transported are transported by the transport air. In this way, even for the particles generated in the vicinity of the baffle plate 14b, only the fine particles having a small particle size can be selected and conveyed.

Further, the air outlet 11b is provided on the top surface 11d of the atomization tank 11 on one end side in the width direction with respect to the connection portion 14ac of the baffle plate 14a, and the air outlet 11c is the other end in the width direction with respect to the connection portion 14bc of the baffle plate 14b. By being provided on the side, the swirling flow formed in the atomization tank 11 becomes a large one formed over the entire inside of the atomization tank 11 with the baffle plate 14a and the baffle plate 14b interposed therebetween. Therefore, the selection of fine particles by the centrifugal force of the conveyed air is further strengthened, and only fine particles to the extent that Brownian motion can be caused can be reliably selected and sprayed.

Further, from the blower 13, the conveyed air from which bacteria and other germs have been removed by the HEPA filter 13f installed at the suction port is pushed into the atomization tank 11. Therefore, contamination by germs and bacteria in the atomization tank 11 and the supply unit 30 can be suppressed, and the inside of the atomization tank 11 and the supply unit 30 are clean without frequent cleaning and maintenance. Can be maintained.

In particular, since the HEPA filter 13f is attached to the suction port which has a surface orthogonal to the rotation axis of the blower member and sucks air in a substantially horizontal direction, the installation area of the HEPA filter 13f can be widened, which is effective. Moreover, it is possible to capture bacteria and other germs in the air with a small pressure loss.

By the way, since the baffle plate 14a is arranged so as to block the transfer air supplied from the blower port 11b, the transfer air supplied by the blower 13 collides with the baffle plate 14a, causing a pressure loss and the transfer pressure. It is possible to carry only fine particles that are low enough to allow Brownian motion. Although the transport air is directly blown to the baffle plate 14a, the HEPA filter 13f installed at the suction port of the blower 13 removes bacteria and other germs existing in the sucked air, so that the baffle plate 14a and its surroundings are removed. It is possible to prevent contamination and mold growth in the atomization tank 11 without adhering bacteria to the atomization tank 11.

Further, the blower 13 has a suction port orthogonal to the rotation axis extending in the substantially horizontal direction, sucks the conveyed air from the horizontal direction, and discharges the conveyed air downward displaced in the substantially perpendicular direction from the suction port. Therefore, the suction pressure to the blower 13 can be strongly maintained. Therefore, a large pressure loss can be caused while maintaining the air volume, a low pressure and a large flow rate of the conveyed air can be generated, and a large amount of fine fine particles capable of Brownian motion can be generated.

At this time, various bacteria and bacteria in the air are sucked into the blower 13 due to the strong suction force, and these bacteria are removed by the HEPA filter 13f installed at the suction port. In particular, since the suction power is strong, bacteria contained in the sucked air can be reliably captured by the HEPA filter 13f.

Moreover, since the HEPA filter 13f is attached to the suction port which has a suction surface orthogonal to the rotation axis of the blower member and sucks air in a substantially horizontal direction, the installation area of the HEPA filter 13f can be widened effectively. Moreover, it is possible to capture bacteria and other germs in the air with a small pressure loss.

[Steps S150 to S160: Determination of first liquid level-Start of replenishment of liquid agent]
Return to the flowchart of FIG. When the atomization of the liquid agent is started in step S140, the control unit 50 starts the determination of the liquid level by the liquid level sensor 15, and whether or not the liquid level in the atomization tank 11 is lower than the first liquid level h1. Determination (step S150).

When the liquid level detected by the liquid level sensor 15 can secure the first liquid level h1, that is, when N in step S150, the control unit 50 continues atomization as it is and falls below the first liquid level h1. That is, when it becomes Y in step S150, the control unit 50 starts replenishment of the liquid agent by the liquid agent supply pump 41 (step S160).

The replenishment of the liquid agent in step S160 is performed by operating the liquid agent supply pump 41 in the same manner as in step S110. In this case, the liquid agent can be replenished to the atomizing tank 11 at the same time by the liquid agent supply pump 41 while continuing the atomization operation.

In particular, since the supply port 11a is formed above the baffle plate 11b, the liquid material supplied from the supply port 11a falls on the liquid layer stored in the atomization tank 11 in a liquid state along the baffle plate 11b. do. That is, the liquid agent supplied from the supply port 11a is replenished in the liquid layer without being affected by the ultrasonic vibration. Therefore, the liquid agent can be replenished without affecting the sorting performance of the fine particles in the present embodiment.

[Steps S170 to S180: Judgment of the second liquid level-Stopping the supply of the liquid agent]
At the same time when the replenishment of the liquid agent is started in step S160, the control unit 50 starts the determination of the liquid level by the liquid level sensor 15, and the liquid level in the atomization tank 11 is higher than the predetermined first liquid level h1. It is determined whether or not the two liquid level h2 has been reached (step S170).

When the liquid level detected by the liquid level sensor 15 does not reach the second liquid level h2, that is, when N in step S170, the control unit 50 continues the supply by the liquid agent supply pump 41 and reaches the second liquid level h2. In the case of Y, that is, in the case of Y in step S170, the control unit 50 stops the supply by the liquid agent supply pump 41 (step S180).

After that, the process may be returned to step S150 again until the power switch 71 is turned off by the user, and control may be performed so that the process from the determination of the first liquid level to the supply of the liquid agent is repeated.

By doing so, the liquid level of the liquid agent in the atomization tank 11 can be held between the first liquid level h1 and the second liquid level h2, and the user does not have to worry about the increase or decrease of the liquid level. , It is possible to continue operation for a long time automatically.

Further, the control unit 50 may be configured to constantly use the stop sensor 16 to determine whether or not the third liquid level h3, which is lower than the first liquid level h1, is determined. When the stop sensor 16 detects that the liquid level has fallen below the third liquid level h3, the control unit 50 immediately stops the operation of the blower 13 and the atomizing device 12.

By doing so, it is possible to suppress the operation of the atomizing device 12 in a situation where the amount of liquid is extremely low, and to prevent so-called dry heating.

Further, at this time, the control unit 50 may be configured to notify the user that the siren is in an empty heating state by sounding an alarm sound or turning on a warning light at the same time as stopping the operation. By doing so, the user can recognize that the heating state has been reached.

[Adjustment of particle size using spray device 1]
Next, a method of adjusting the particle size of the fine particles to be sprayed using the spraying device 1 in the present embodiment to a desired value will be described.

As described above, the control unit 50 can control the rotation speed of the blower member of the blower 13 by controlling the voltage applied to the blower 13. Then, by increasing the rotation speed of the blower member, the particle size of the fine particles sprayed from the spray port 32 can be reduced. On the contrary, by lowering the rotation speed of the blower member, the particle size of the fine particles sprayed from the spray port can be increased. The mechanism capable of changing the particle size of the sprayed particles with the change in the rotation speed of the blower member will be described below.

Generally, when the rotation speed of the blower member is controlled, the air volume changes as the rotation speed changes. For example, increasing the rotation speed of the blower member increases the air volume, and decreasing the rotation speed decreases the air volume. However, since the wind pressure itself does not change, the transport capacity by the transport air does not change, and the particle size of the transportable particles cannot be changed by changing the rotation speed.

On the other hand, in the present invention, since the air supply port 11b of the conveyed air supplied from the blower 13 is arranged above the baffle plate 14a, the conveyed air supplied from the air blower port 11b is on one side of the baffle plate 14a. It collides with the surface and causes pressure loss.

By controlling the rotation speed of the blower member in a state where the pressure loss of the transport air is caused, the change in the wind pressure can be made larger with respect to the change in the air volume of the transport air. For example, when the rotation speed of the blower member is increased, the air volume of the conveyed air increases, so that the pressure loss generated by the contact with the baffle plate 14a increases, so that the pressure of the transferred air decreases and the particles are conveyed. The ability to do is reduced. Therefore, particles having a smaller particle size are transported than before the rotation speed is changed.

On the contrary, when the rotation speed of the blower member is lowered, the air volume of the conveyed air is reduced, and the pressure loss generated by the contact with the baffle plate 14a is reduced, so that the pressure of the conveyed air is increased and the particles are conveyed. Ability improves. Therefore, particles having a larger particle size are transported than before the rotation speed is changed.

In this way, the particle size of the particles that can be transported can be changed by utilizing the increase or decrease in the pressure loss.

Further, in the present embodiment, the conveyed air passes through the gap formed between the edge portion 14ae of the baffle plate 14a and the atomization tank 11, and then wraps around the surface of the baffle plate 14a on the side receiving the liquid column. Since it reaches the delivery port 11c, a gentle swirling flow of the conveyed air toward the delivery port is formed around the baffle plate 14a.

Then, by controlling the rotation speed of the blower member, the air volume changes, so that the centrifugal force applied to the atomized particles changes, that is, the particle size of the transportable particles can be changed. For example, when the rotation speed of the blower member is increased, the air volume of the conveyed air increases, so that the centrifugal force applied to the particles accompanying the swirling flow increases, and the particles having a relatively small particle size are separated. , Only particles with a very small particle size will be transported.

On the contrary, when the rotation speed of the blower member is lowered, the air volume of the conveyed air is reduced and the centrifugal force applied to the particles accompanying the swirling flow is reduced, so that the ability to separate the particles is weakened and the particle size is large. Particles can also be transported.

In this way, by controlling the rotation speed of the blower member of the blower 13 by the control unit 50, it becomes possible to spray fine particles having a desired particle size from the spray port 32.

<Modification 1>
In step S110 of the flowchart shown in FIG. 6, the liquid agent is supplied from the tank unit 20 to the atomization tank 11 by using the liquid agent supply pump 41, but the liquid agent is supplied by using a solenoid valve instead of the liquid agent supply pump 41. It can also be configured to supply.

That is, an electromagnetic valve that can be opened and closed by a signal from the control unit 50 is arranged in the middle of the liquid agent supply pipe 42, and when an open signal is emitted from the control unit 50, the solenoid valve is opened to supply the liquid agent. At this time, since the tank unit 20 is arranged above the atomization tank 11, the liquid can be supplied by gravity, which is faster and consumes more power than using the liquid supply pump 41. The liquid agent can be supplied without need. In particular, by supplying the liquid agent to the atomization tank 11 at the time of starting by using gravity, the time from turning on the power switch 71 to the start of atomization can be shortened, which is an easy-to-use spraying device. 1 can be provided.

<Modification 2>
A modified example of the configuration of the atomization unit 10 will be described with reference to FIG. 7. Instead of arranging the baffle plates 14a and 14b diagonally downward, they can be arranged vertically downward from the top surface and then bent horizontally toward the side surface of the atomization tank 11. ..

In particular, as shown in FIG. 7A, the baffle plate 14a is hung vertically downward from the top surface 11d and then bent horizontally toward the side surface of the atomization tank 11 on one end side in the width direction to atomize the edge portion 14ae. The tank 11 is arranged at a predetermined distance from the side surface on one end side in the width direction. By doing so, similarly to the above, the conveyed air from the blower 13 can be brought into contact with the one side surface of the baffle plate 14a to cause a pressure loss. As a result, a spraying device capable of transporting only fine particles from a liquid column in contact with the other surface of the baffle plate 14a and selectively spraying only fine particles small enough to cause Brownian motion. 1 can be provided.

Further, even if the baffle plate 14a is configured in this way, the conveyed air passes between the edge portion 14ae and the side surface on one end side in the width direction of the atomization tank 11 and passes below the baffle plate 14a, so that the atomization tank 11 A swirling flow can be formed within. As a result, by utilizing the effect of separation by centrifugal force, only fine particles can be transported from the liquid column in contact with the other surface of the baffle plate 14a, and only fine particles small enough to cause Brownian motion can be transported. It is possible to provide a spraying device 1 capable of selectively spraying.

<Modification 3>
The air outlet 11b and the air outlet 11c can be arranged on the side surface of the atomization tank 11 instead of the top surface 11d.

As shown in FIG. 7B, even when the air outlet 11b is arranged on the side surface of the atomization tank 11 on one end side in the width direction, if it is arranged above the position of the edge portion 14ae, the air outlet 11b is arranged. Since the transfer air flowing in from the baffle plate 14a comes into contact with the baffle plate 14a, a pressure loss of the transfer air can be caused, and the same effect as described above can be obtained.

Further, as shown in FIG. 7C, even when the delivery port 11c is arranged on the side surface on the other end side in the width direction of the atomization tank 11, if it is arranged above the position of the edge portion 14bc, it is sufficient. A swirling flow can be formed in the atomization tank 11, and the same effect as described above can be obtained.

Further, as shown in FIG. 7D, the position where the air blower port 11b is arranged may be arranged at a position where the blown transfer air does not come into contact with the baffle plate 14a. Even in such a case, the conveyed air passes between the side surface on one end side in the width direction of the atomization tank 11 and the edge portion 14ae and passes below the baffle plate 14a, so that a swirling flow is generated in the atomization tank 11. It can be formed and the same effect as described above can be obtained.

In this way, even if the arrangement or shape of the baffle plates 14a and 14b is changed, or the arrangement of the air outlet 11b and the air outlet 11c is changed, the phenomenon described in the present invention can occur. If it is, it is included in the scope of the present invention.

The effects of the present invention described above can be summarized as follows.

The spray device 1 of the present invention is provided with an atomization tank 11 capable of storing the liquid agent, and ultrasonic vibrators 12a, 12b, 12c ... By atomizing the liquid agent in the atomization tank 11 to generate fine particles. The atomization device 12, a blower equipped with a blower member capable of holding a predetermined number of revolutions, a blower for pushing the conveyed air into the atomization tank from an air outlet provided in the atomization tank, and a blower provided in the atomization tank for conveying fine particles. It is equipped with a baffle plate that is arranged to receive the liquid column of the liquid agent generated by the ultrasonic transducer in the atomization tank, and the baffle plate is oriented to block the conveyed air supplied from the air outlet. A HEPA filter is attached to the suction port of the blower.

According to the present invention, since the baffle plate is arranged so as to block the transfer air supplied from the blower port, the transfer air supplied by the blower collides with the baffle plate, causing a pressure loss and the transfer pressure. It is possible to carry only fine particles that are low enough to allow Brownian motion. Although the transport air is directly blown to the baffle plate, the HEPA filter installed at the suction port of the blower removes bacteria and other germs existing in the sucked air, so that bacteria adhere to the baffle plate and its surroundings. It is possible to provide a spraying device capable of preventing contamination and mold growth in the atomization tank without causing the atomization.

Further, in the present invention, the blower port is provided on the top surface of the atomization tank, and the blower is provided with a suction port having a suction surface orthogonal to the rotation axis of the blower member extending in a substantially horizontal direction and a blower port. It is provided with a discharge port that is connected and discharges conveyed air downward.

According to the above items, it has a suction port that is orthogonal to the rotation axis that extends in the substantially horizontal direction, sucks the conveyed air from the horizontal direction, and discharges the conveyed air downward that is displaced in the substantially perpendicular direction from the suction port. Therefore, the suction pressure to the blower can be strongly maintained. Therefore, a large pressure loss can be caused while maintaining the air volume, a low pressure and a large flow rate of the conveyed air can be generated, and a large amount of fine fine particles capable of Brownian motion can be generated.

At this time, various bacteria and bacteria in the air are sucked into the blower by the strong suction force, and these bacteria are removed by the HEPA filter installed in the suction port. In particular, since the suction power is strong, bacteria contained in the sucked air can be reliably captured by the HEPA filter.

Moreover, since the HEPA filter is attached to the suction port that has a suction surface orthogonal to the rotation axis of the blower member and sucks air in a substantially horizontal direction, the installation area of the HEPA filter can be widened, which is effective and effective. It is possible to capture bacteria and germs in the air with a small pressure loss.

Further, the present invention has a drain discharge mechanism for discharging the liquid agent from the atomization tank.

According to the above items, the inside of the atomization tank can be kept clean only by discharging the liquid agent remaining in the atomization tank by the drain discharge mechanism. In particular, since a HEPA filter is installed at the suction port of the blower, bacteria and bacteria do not flow in from the outside air. Therefore, it is not necessary to remove and clean the atomization tank, and the inside of the atomization tank can be kept clean only by discharging the residual liquid agent without specialized knowledge or special tools.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments described above. Further, the effects described in the embodiments of the present invention merely list the most suitable effects arising from the present invention, and the effects according to the present invention are limited to those described in the embodiments of the present invention. is not it.

Further, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.

For example, not only a HEPA filter but also a filter using a ULPA filter can be included in the concept of the present invention.

The spraying device of the present invention can be applied to various spraying devices that spray various kinds of liquids.

1 Atomizer 10 Atomization unit 11 Atomization tank 11a Inlet 11b Blower 11c Outlet 11d Top surface 12 Atomization device 12a, b ... Ultrasonic transducer 13 Blower 13f HEPA filter 14a, b Baffle plate 15 Liquid level Sensor 16 Stop sensor 20 Tank unit 30 Blow-out unit 31 Blow-out member 32 Spray port 40 Supply unit 50 Control unit 60 Installation unit 61 Lower base 62 Column member 63 Top member 64 Leg 70 Power supply unit 80 Cover member

Claims (3)

Atomization tank that can store liquids,
An atomizing device provided with an ultrasonic transducer that atomizes a liquid agent in the atomization tank to generate fine particles.
A blower provided with a blower member capable of holding a predetermined rotation speed and pushing conveyed air into the atomization tank from an air outlet provided in the atomization tank.
An outlet provided in the atomization tank to deliver the fine particles together with the transport air.
In addition, a baffle plate is provided so as to receive a liquid column of the liquid agent generated by the ultrasonic vibrator in the atomization tank.
The baffle plate is arranged so as to block the conveyed air supplied from the air outlet.
A HEPA filter is attached to the suction port of the blower.
Spraying device. The air outlet is provided on the top surface of the atomization tank and is also provided.
A claim that the blower includes a suction port having a suction surface orthogonal to the rotation axis of the blower member extending in a substantially horizontal direction, and a discharge port connected to the blower port and discharging the conveyed air downward. The spraying device according to 1. It has a drain discharge mechanism for discharging the liquid agent from the atomization tank.
The spraying device according to claim 1 or 2.

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