JP2011247521A - Mist generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mist generator that can avoid liquid and air bubbles existing in the vicinity of a misting part from disturbing a mist spray.SOLUTION: This mist generator includes a water storage tank for storing liquid therein, the misting part for misting the liquid, and a transportation passage which forms a part of a flow passage for transporting the liquid stored in the water storage tank to the misting part. The mist generator also includes a pressurizing part which biases the liquid stored in the water storage tank so as to reach the misting part via the transportation passage. Furthermore, the mist generator includes a ventilation part which blocks the liquid and makes air pass therethrough. The ventilation part has a slope having a prescribed inclination angle with respect to the horizontal direction, and a ventilation port which is a hole formed at a part of the slope, and performs ventilation. The ventilation part has a water stop film formed at a position in which the film abuts on an upper face of the slope and the ventilation port.

Description

  The present invention relates to a mist generator that is mounted on a vehicle or the like and sprays, and more particularly to a mist generator that sprays using an ultrasonic transducer.

  In recent years, mist generators having various forms and features have been developed. For example, a mist generator for a moving body that cleans air in a vehicle by generating mist (= mist) from a liquid such as water or electrolyzed water and spraying the liquid is put into practical use. In particular, a mist generator has been put into practical use in which a liquid is brought into contact with a vibrator having fine holes to generate mist in the upward direction.

  For example, Patent Document 1 discloses a portable spray device (= mist generator). This spraying device is provided with a liquid storage means for storing a humidifying liquid and a liquid supply means for supplying the stored liquid upward. Moreover, it is provided in the upper part in a housing, The mist production | generation means which receives supply from a liquid supply means and produces mist from a liquid is provided.

  In addition, the spray device includes an opening for passing the mist generated by the mist generating means above the mist generating means. In addition, a lid is provided at the upper end of the housing so as to be rotatable between an on position and an off position, and a discharge port communicated with the opening when the lid is pivoted to the on position. Thereby, mist is discharged through the opening and the discharge port.

JP 2009-168328 A

  Since the conventional mist generator as described above needs to supply the liquid to the atomization unit in the operating state, the liquid supply device, for example, the pneumatic delivery device is operated. At this time, when the liquid is supplied to the atomizing portion, it is necessary to first discharge the air accumulated in the liquid supply path.

  An example of the configuration of a conventional mist generator will be described with reference to FIGS. As shown in FIG. 7, the mist generator includes a discharge plate 101, an ultrasonic vibrator 102 (= atomization unit), an aqueous solution tank 103, a water conduit 104 (= liquid supply path), a pneumatic delivery device 105, and the like. Yes.

  At the center of the discharge plate 101, there is provided a fine hole region 101a provided with a large number of fine holes large enough to allow mist to pass through. However, the air flow rate that can be discharged from the fine hole region 101a is extremely small. Therefore, a ventilation filter 106 having a larger air flow rate than the fine hole region 101 a is provided in the vicinity of the ultrasonic transducer 102 for the purpose of pushing up the liquid to the ultrasonic transducer 102 in a short time. The ventilation filter 106 includes a membrane that allows air to pass but not liquid.

  If the surface of the ventilation filter 106 is in contact with air, the air in the liquid supply path will escape. However, there is a possibility that the liquid remains on the ventilation filter 106 after the mist generation stops and the liquid around the vibrator returns to the aqueous solution tank 103 side.

  In this case, when the next liquid supply is attempted, the ventilation filter 106 is covered with the liquid, so that the air cannot be discharged from the ventilation filter 106. In such a state, it takes a long time to supply the liquid to the ultrasonic vibrator 102.

  In addition, bubbles are generated in a portion where the ultrasonic vibrator 102 and the liquid are in contact with each other during mist generation, and the bubbles continue to grow as they are. As a result, as shown in FIG. 8, the fine hole region 101a is covered with the air layer formed by the grown bubble β (broken line portion in the figure), and mist cannot be blown out. Since it is very difficult to eliminate the generation of bubbles, it is necessary to exclude the generated bubbles from the vicinity of the ultrasonic transducer 102 using some means.

  The present invention has been made in view of the above problems, and is a mist generator that generates mist by transporting liquid to the vicinity of the atomization unit using the liquid supply device, and is provided in the vicinity of the atomization unit. An object of the present invention is to provide a mist generator capable of avoiding the presence of liquid or bubbles existing in the spray.

  In order to achieve the above object, the mist generator of the present invention includes a water storage tank that stores liquid therein, an atomization unit that atomizes liquid, and the liquid stored in the water storage tank to the atomization unit. By pressurizing the transport path that forms a part of the flow path for transport and the liquid stored in the water storage tank, the liquid reaches the atomizing section via the transport path. In the mist generator provided with a pressurizing part for energizing and a ventilation part provided below the atomization part to block liquid and allow gas to pass therethrough, the ventilation part is predetermined in the horizontal direction. An inclined surface having an inclined angle, a hole provided in a part of the inclined surface for ventilating the inside and outside of the mist generator, an upper surface of the inclined surface, and the vent And a water blocking film provided at a position where the To.

  According to this configuration, the mist generator of the present invention includes a water storage tank that stores liquid therein, an atomization unit that atomizes the liquid, and a flow for transporting the liquid stored in the water storage tank to the atomization unit. And a conveyance path that forms part of the path. Moreover, the pressurization part which urges | biases so that it may reach an atomization part via a conveyance path by pressurizing the liquid stored in the water storage tank is provided.

  Moreover, the ventilation part which is provided under the atomization part and interrupts | blocks a liquid and permeate | transmits gas is provided. The ventilation part includes an inclined surface having a predetermined inclination angle with respect to the horizontal direction, and a vent hole which is a hole provided in a part of the inclined surface and ventilates. Moreover, the ventilation part is provided with the water stop film provided in the position which contact | abuts the upper surface of an inclined surface, and a vent hole.

  Further, in order to achieve the above object, the atomization unit provided in the mist generator of the present invention has a microhole region, which is a region provided with a plurality of microholes for discharging mist from the inside of the mist generator to the outside. And the ventilation portion includes the ventilation port below a position outside the horizontal outer edge of the fine hole region.

  According to this structure, the atomization part is provided with the fine hole area | region which is an area | region in which multiple fine holes which discharge | emit fog from the inside of a mist generator to the exterior were provided. Moreover, the ventilation part is provided with the ventilation hole below the position outside the horizontal direction outer edge of a fine hole area | region.

  Further, in order to achieve the above object, the ventilation portion provided in the mist generator of the present invention is provided in an arc shape centered on a region immediately below the fine hole region on the inclined surface. And the upper end of the ventilation part is provided at a position higher than the region immediately below in the vertical direction.

  According to this structure, the ventilation part is provided in the circular arc shape centering on the area | region directly under a fine hole area | region among inclined surfaces. The ventilation part is provided so that the upper end of the ventilation part is located at a position higher than the region immediately below in the vertical direction.

  In order to achieve the above object, the water blocking film provided in the mist generator of the present invention releases bubbles generated in the atomizing section to the outside of the mist generator by the pressure applied by the pressurizing section. The structure is characterized by having water repellency.

  According to this configuration, the water blocking film has a structure in which bubbles generated in the atomizing unit are discharged to the outside of the mist generator by the pressure applied by the pressurizing unit. Further, the water blocking film is made of a material having water repellency.

  In order to achieve the above object, the inclined surface of the mist generator of the present invention is provided so as to have an inclination angle of 15 degrees or more with respect to the horizontal direction.

  According to this configuration, the inclined surface included in the ventilation portion is provided so as to have an inclination angle of 15 degrees or more with respect to the horizontal direction.

  Further, in order to achieve the above object, the pressurization unit provided in the mist generator of the present invention increases the air pressure in the water storage tank by sending air from the outside of the water storage tank to the inside of the water storage tank. The liquid in the water storage tank is pressurized.

  According to this structure, a pressurization part pressurizes the liquid in a water storage tank by sending air into the inside of a water storage tank from the exterior of a water storage tank, and increasing the air pressure in a water storage tank.

  Further, in order to achieve the above object, the atomization unit provided in the mist generator of the present invention includes an ultrasonic vibrator, atomizes a liquid using the ultrasonic vibrator, and is disposed above the water storage tank. The transport path forms the flow path vertically upward, and the pressurizing unit pressurizes the liquid stored in the water storage tank, thereby supplying the liquid to the transport path. It pushes up through and conveys to the said atomization part.

  According to this configuration, the atomization unit includes the ultrasonic vibrator, and atomizes the liquid using the ultrasonic vibrator and is provided above the water storage tank. The transport path forms a flow path vertically upward. The pressurizing unit pressurizes the liquid stored in the water storage tank, thereby pushing up the liquid via the transport path and transporting the liquid to the atomizing unit.

  According to the present invention, the vent is provided with a water-repellent film having water repellency attached to the inclined surface. As a result, when the liquid returns to the water storage section when spraying is stopped, the liquid on the water stop film flows down to the flow path side. Thereby, it is avoided that the water blocking film is covered with the remaining liquid. For this reason, when the liquid supply operation starts next, the air in the flow path can be efficiently removed.

  Moreover, according to this invention, the air vent which affixed the water stop film is provided in the vicinity of the atomization part. For this reason, bubbles that are generated at the part where the atomizing part and the liquid are in contact with each other can be released to the outside by air pressure in contact with the air vent before they grow large enough to cover the fine hole region. Is possible. Therefore, it is possible to avoid a situation where the grown bubbles block the fine hole region and cannot be sprayed.

  Moreover, according to this invention, the vent hole is provided in the outer side just under the fine hole area | region. Thereby, it is avoided that the jet generated just under the fine hole region contacts the water stop film that is in contact with the outside air without the support structure. Thereby, the degree to which a water stop film deteriorates by a jet can be reduced.

It is a cross-sectional side view which shows the structure of the mist generator of this invention. It is the upper side figure and sectional side view which show the structure of the mist generator of this invention. It is a schematic diagram which shows the structure of the atomization part of the mist generator of this invention. It is a block diagram which shows the electric circuit structure of the mist generator of this invention. It is a cross-sectional side view which shows the structure of the mist generator which concerns on 2nd embodiment. It is a perspective view which shows the ventilation part which concerns on 2nd embodiment. It is a cross-sectional side view which shows the structure of the conventional mist generator. It is a cross-sectional side view which shows the structure of the conventional mist generator.

Embodiments of the present invention will be described below with reference to the drawings. In addition, embodiment shown here is an example and this invention is not limited to embodiment shown here.
[Embodiment 1]
<1-1. Internal configuration>
1 and 2 are diagrams showing an internal configuration of the mist generator 100 according to the first embodiment of the present invention. The mist generator 100 is a device for generating and spraying mist on the inside of the vehicle 10 in which the mist generator 100 is mounted. The mist generator 100 has a structure that can be attached to and detached from the vehicle 10. Each part of the mist generator 100 is formed, for example, as a plastic molded product unless otherwise specified.

  FIG.1 and FIG.2 (b) is the cross-sectional side view which looked at the mist generator 100 from the side surface. FIG. 2A is a top view of the mist generator 100 as viewed from above. 1 and 2B have the same contents.

  The mist generator 100 operates using a rechargeable battery (not shown) or the like as a power source, and has a cylindrical shape with a diameter of about 10 cm and a height of about 20 cm. In FIG. 1, the downward direction in the drawing indicates the lower direction of the mist generator 100.

  As shown in FIG. 1, the mist generator 100 includes a discharge plate 101 (= atomization unit), an ultrasonic vibrator 102 (= atomization unit), an aqueous solution tank 103 (= water storage tank), a water conduit 104 (= conveyance path). ), A pneumatic delivery device 105 (= pressurizing unit), a ventilation filter 106 (= venting unit, water blocking film), a vent 107 (= venting unit), and a control board 200.

  The discharge plate 101 is a plate-like member, and has a fine hole region 101a provided with a large number of fine holes large enough to allow mist to pass therethrough. The ultrasonic vibrator 102 is a disk-shaped member that is pushed up through the water conduit 104 and mists the aqueous solution that has reached the lower side of the discharge plate 101 by a vibrating operation.

  Then, the mist-like aqueous solution, that is, the mist is sprayed to the outside of the mist generator 100 through the discharge plate 101. This achieves the main purpose of the mist generator 100 that generates and discharges mist to the outside.

  The aqueous solution tank 103 stores the aqueous solution used by the ultrasonic transducer 102 for generating mist. The water guide pipe 104 is fixed to the housing of the mist generator 100 as a substantially tubular member extending in the vertical direction (vertical direction). The upper end and the lower end of the water conduit 104 are opened, and the aqueous solution entering from the lower end of the water conduit 104 flows through the inside and can exit from the upper end.

  The lower end of the water conduit 104 is designed to protrude into the aqueous solution tank 103. On the other hand, a discharge plate 101 and an ultrasonic transducer 102 are disposed in the vicinity of the upper end of the water conduit 104. Thereby, the water conduit 104 forms a flow path of the aqueous solution so as to go from the inside of the aqueous solution tank 103 toward the discharge plate 101 and the ultrasonic vibrator 102.

  Note that the lower end of the water conduit 104 is set to be separated from the bottom of the aqueous solution tank 103 by a predetermined distance. As the shape of the water conduit 104, a substantially tubular shape is suitable as described above, but various shapes can be adopted as long as the flow path of the aqueous solution is formed.

  The pneumatic delivery device 105 is a liquid supply device, and has an air inlet and an outlet. And the operation | movement (henceforth "blower operation | movement") which blows off the air suck | inhaled from the suction inlet from a blower outlet is performed. The pneumatic delivery device 105 is installed such that the suction port is opened to the outside (in the atmosphere) of the mist generator 100. Further, the air outlet is installed so as to face the lower part of the mist generator 100.

  The ventilation filter 106 is a film-like member provided in the vicinity of the ultrasonic transducer 102 in the downward direction. The mist generator 100 according to the present embodiment is provided with an inclined surface (= venting portion) having an angle with respect to the horizontal in the vicinity below the ultrasonic transducer 102. A vent hole 107 communicating with the external atmosphere is provided downward from a part of the inclined surface. By covering the ventilation hole 107 with a ventilation filter 106 having water repellency, a closed space is formed below the ultrasonic transducer 102.

  The control board 200 is a board including a control circuit that controls each part of the mist generator 100, a microcomputer, or the like. The control board 200 is housed in a space provided in the housing of the mist generator 100 (above the water supply tank 103 in the example of FIG. 1).

The control board 200 is connected to the ultrasonic transducer 102 by a lead wire or the like. The control board 200 is configured to include at least the microcomputer 201, the vibrator driving circuit 202 (= atomizing unit), and the pneumatic pressure delivery device driving circuit 203 (= pressurizing unit) shown in FIG. Details of each part will be described later.
<1-2. About the structure of ultrasonic transducers>
FIG. 3 is a schematic diagram showing a configuration around the ultrasonic transducer 102 according to the first embodiment of the present invention. FIG. 3A shows a state in which the ultrasonic transducer 102 is viewed obliquely from above. FIG. 3B shows a cross-sectional view when a plane including the line segment AA ′ is taken as a cross-section (however, a portion such as the control board 200 is not a cross-sectional view).

  As shown in FIG. 3, the ultrasonic transducer 102 has a donut shape (the cross section is substantially rectangular), and is bonded to the upper surface of the discharge plate 101 whose outer edge is circular. The discharge plate 101 is a substantially plate-like member made of, for example, stainless steel, and a fine hole region 101a is provided in a predetermined region at the center (a part of a region surrounded by the ultrasonic transducer 102). .

The fine hole region 101a is a region in the discharge plate 101 in which a large number of fine holes having a size that allows mist to pass through are provided. The ultrasonic vibrator 102 is made of piezoelectric ceramic. When a predetermined voltage is applied between the electrode film formed on the surface of the ultrasonic transducer 102 and the emission plate 101 by the control substrate 200 installed in the housing, high-frequency (ultrasonic) vibration is generated. As a result, the aqueous solution is atomized to generate mist.
<1-3. Control board configuration>
FIG. 4 is a block diagram showing the configuration of the control board 200 and the configuration of members connected to the control board 200 according to the first embodiment of the present invention. As shown in FIG. 4, the control board 200 includes a microcomputer 201, a vibrator driving circuit 202, and an air pressure delivery device driving circuit 203. In addition to the members illustrated in FIG. 1, a start switch 301 and a power supply unit 302 exist as members connected to the control board 200.

  The microcomputer 201 organically controls the driving of each member of the mist generator 100 and controls the generation of mist in an integrated manner. The microcomputer 201 also has a function of performing drive control on the vibrator drive circuit 202 and the air pressure delivery device drive circuit 203 and voltage control on the power supply unit 302.

  The vibrator driving circuit 202 is a circuit that selectively performs execution / non-execution of the driving voltage to the ultrasonic vibrator 102. The vibrator driving circuit 202 has a function of adjusting the amount of mist generated by changing the magnitude of the driving voltage to be applied.

  The air pressure delivery device drive circuit 203 is a circuit that selectively performs application / non-execution of the drive voltage to the air pressure delivery device 105. The air pressure delivery device drive circuit 203 has a function of adjusting the amount of air pressure generated by the air pressure delivery device 105 by changing the magnitude of the applied drive voltage.

  The start switch 301 is a limit switch for switching ON / OFF of the operating state of the mist generator 100. However, even when the start switch is OFF, the start switch 301 allows a minute current to flow to the microcomputer 201. Thereby, the microcomputer 201 can maintain the standby state.

  The power supply unit 302 is supplied with electric power from an external power supply (not shown), performs DC / AC conversion and the like, and supplies a power supply voltage to each unit of the mist generator 100. The power supply unit 302 includes, for example, a connection terminal (not shown) for connecting a power cord for receiving power supply from an external power supply.

Alternatively, the power supply unit 302 may be configured such that the mist generator 100 can be driven while being disconnected from the external power supply by using a dry battery or a secondary battery as a power supply. As the secondary battery, for example, a rechargeable alkaline battery or a lithium ion battery can be used.
<1-4. About Mist Generation Processing>
Next, a mist generation process performed by the microcomputer 201 will be described with reference to FIGS. 1 and 2.

  The microcomputer 201 sends an instruction to the pneumatic delivery device drive circuit 203 to perform an operation of applying pressure to the aqueous solution tank 103 when the power source is activated by the activation switch 301, and the pneumatic delivery device drive circuit 203 The pneumatic delivery device 105 is controlled. Thereby, the aqueous solution is pushed up from the aqueous solution tank 103 through the water conduit 104 using the air pressure generated by the air pressure delivery device 105 (the gray portion of the water conduit 104 in FIG. 1).

  In the state where the air pressure delivery device 105 is not performing the air blowing operation, the pressure of the air existing in the aqueous solution tank 103 and the air existing in the water conduit 104 is substantially equal to the atmospheric pressure. Therefore, in this state, the aqueous solution in the aqueous solution tank 103 is not supplied to the ultrasonic vibrator 102 installed at a position higher than the water surface.

  As shown in FIG. 1, when the air pressure delivery device 105 performs a blowing operation, air is sent from the outside to the air layer of the aqueous solution tank 103 (arrow α1 in the figure). As a result, the air pressure in the aqueous solution tank 103 is increased by the amount of the pressure P (pressure newly added by the blowing operation) to the atmospheric pressure. The air pressure in the aqueous solution tank 103 is maintained in this state while the air blowing operation is continued.

  In FIG. 1, since the air pressure has just been generated, the pushed-up aqueous solution does not reach the upper end of the water conduit 104, that is, the vicinity of the ultrasonic transducer 102. When the air pressure delivery device 105 is controlled and the air pressure is increased in this state, the aqueous solution in the aqueous solution tank 103 is pressurized.

  As the water pressure of the aqueous solution increases, the aqueous solution in the aqueous solution tank 103 is pushed up inside the water conduit 104 (arrow α2 in the figure). As a result, mist is generated using the aqueous solution that has reached the ultrasonic transducer 102.

  At this time, the air existing in the water conduit 104 is discharged to the outside of the mist generator 100 by the ventilation filter 106 (arrow α3 in the figure). Thereby, when the aqueous solution in the aqueous solution tank 103 is pushed up by the air blowing operation, air present in the water conduit 104 or the like is prevented from obstructing the pushing up of the aqueous solution. In addition, the ventilation filter 106 prevents the aqueous solution from leaking outside the mist generator 100.

  When the mist generation process is started, bubbles are generated as a by-product at the contact surface between the ultrasonic vibrator 102 and the aqueous solution. Bubbles become larger as mist generation continues and eventually reach a size in contact with the ventilation filter 106 provided on the inclined surface.

  The ventilation filter 106 is made of a material that transmits air bubbles. For this reason, at the stage where bubbles have grown to the extent that they pass through the ventilation filter 106 and reach the ventilation port 107, the bubbles are discharged from the ventilation port 107 to the outside by the air pressure by the air blowing operation.

  The size of the bubble that has grown to the extent that it can reach the vent 107 varies depending on the device size and structure of the mist generator 100, but is assumed to have a diameter of about 1 mm.

  When an instruction to stop the mist generation operation is detected in a state where the mist generation operation is being performed, the pneumatic pressure delivery device drive circuit 203 stops the pneumatic pressure delivery device 105. An instruction to stop the mist generation operation is given from the microcomputer 201 to the pneumatic pressure supply device drive circuit 203 at predetermined time intervals, for example. Alternatively, it is issued when the user stops the power supply by the start switch 301.

  When the mist generating operation is stopped, the liquid supplied to the ultrasonic vibrator 102 returns to the aqueous solution tank 103 due to a pressure difference due to a difference in water surface height. At this time, the ventilation filter 106 is wet with the aqueous solution, but since the ventilation filter 106 is provided on the inclined surface, the liquid on the ventilation filter 106 flows downward without remaining. .

  In a flow experiment using an aqueous solution, if the inclination is approximately 15 degrees or more with respect to the horizontal, the aqueous solution flows down with a suitable momentum, and if it is less than 15 degrees, the momentum flowing decreases as the angle decreases. It has been confirmed. Therefore, it is desirable that the ventilation filter 106 is provided above the ventilation hole 107 at an inclination angle of at least 15 degrees or more.

  According to the present embodiment described above, since the ventilation filter 106 is provided on the inclined surface, the aqueous solution on the ventilation filter 106 flows down toward the aqueous solution tank 103 when the mist generation operation is stopped. This prevents the ventilation filter 106 from being covered with the residual aqueous solution. Therefore, when the mist generation operation is started next and the aqueous solution is transported, the air in the vicinity of the water guide tube 104 and the ultrasonic transducer 102 can be efficiently removed.

Further, according to the present embodiment, since the ventilation filter 106 is provided on the inclined surface, the time required for the bubbles to grow to the extent that they reach the ventilation hole 107 is determined when the ventilation filter 106 is provided on the horizontal plane ( Short compared to FIG. For this reason, before it will be in the state (bubble (beta) of FIG. 8) that a bubble covers the fine hole contained in the fine hole area | region 101a, it can discharge | emit outside. Therefore, the grown bubbles do not interfere with the mist generation operation.
[Embodiment 2]
Next, a second embodiment of the present invention will be described.
<2-1. Internal configuration>
The structure of the mist generator 100 of this embodiment is demonstrated using figures. In the present embodiment, the vent hole 107 is provided outside the vertical direction (broken line in the figure) of the outer edge of the fine hole region 101a. This is to prevent the jet generated when mist is generated from hitting a part of the ventilation filter 106, particularly a part located directly above the ventilation hole 107.

  When mist generation is performed with air pressure applied by the air pressure delivery device 105, a jet having substantially the same size as that of the fine hole region 101 is generated immediately below the fine hole region 101a. When the jet flows directly against the ventilation filter 106, the ventilation filter 106 is always stressed by the jet. This stress causes the ventilation filter 106 to stretch, and accelerates the deterioration of the ventilation filter 106.

  In particular, the portion of the ventilation filter 106 that is located directly above the ventilation port 107 is in contact with the outside air, and there is no member that directly supports this. For this reason, this part is particularly vulnerable to stress. Therefore, the mist generator 100 of the present embodiment is provided with the vent hole 107 on the outer side in the horizontal direction from directly below the minute hole region 101a, avoiding the portion where the jet flows.

FIG. 6 is a perspective view in which only the vicinity of the inclined surface provided with the vent 107 is extracted. FIG. 6 shows a state in which the ventilation filter 106 originally attached to the inclined surface and the upper surface of the ventilation hole 107 is removed. A hatched region γ (= directly under region) in FIG. 6 is a portion immediately below the minute hole region 101a and indicates a portion that is easily hit by a jet.
The vent 107 is provided at the outer edge of the shaded area γ. Further, the upper end of the vent 107 is provided so as to be higher than the hatched area γ in the vertical direction. Further, the upper end of the vent 107 is provided so as to be a position closer to the ultrasonic transducer 102 in the vertical direction (= a position opposite to the water guide pipe 104).

In the example of FIG. 6, the vent hole 107 having an arc shape when viewed from above is provided. The form which provides the opening | mouth 107 may be sufficient. For example, a vent hole 107 having a U-shape may be provided so as to surround the hatched region γ when viewed from above.
<2-2. About the structure of ultrasonic transducers>
Since it is the same content as Embodiment 1, description is abbreviate | omitted.
<2-3. Control board configuration>
Since it is the same content as Embodiment 1, description is abbreviate | omitted.
<2-4. About Mist Generation Processing>
Since it is the same content as Embodiment 1, description is abbreviate | omitted.

According to the present embodiment described above, since the vent hole 107 is provided avoiding the hatched area γ where the jet is likely to hit, the vent filter 106 attached to the upper surface of the vent hole 107 is caused by the jet pressure. The degree of deterioration can be reduced.
[Other embodiments]
The present invention has been described with reference to the preferred embodiments and examples. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea. be able to.

  Therefore, the present invention can also be applied to the following embodiments.

  (A) In the above-described embodiment, the in-vehicle mist generator 100 is described as an example of a device that implements the configuration of the present invention. However, the embodiment may be implemented in other mist generators. For example, the present invention may be implemented in a mist generator that is mounted on a passenger aircraft, a ship, or the like. Moreover, the form which implements this invention may be sufficient in the portable mist generator to carry and use.

  (B) In the above embodiment, the pneumatic delivery device 105 is used as a pressurizing device for pressurizing the aqueous solution stored in the aqueous solution tank 103. However, the aqueous solution may be pressurized by other methods. For example, the aqueous solution in the aqueous solution tank 103 may be pressurized by gradually deforming the aqueous solution tank 103 and reducing the space in the aqueous solution tank 103.

  (C) In the above embodiment, the mist is generated from the aqueous solution using the ultrasonic vibrator 102. However, the mist may be generated using a method other than this. For example, the form which produces | generates electrolyzed water from aqueous solution using a some electrode, and produces | generates mist from electrolyzed water may be sufficient.

  (D) In the above-described embodiment, the conduit 104 is described as an example of a substantially tubular member extending in the vertical direction in the housing of the mist generator 100. However, other configurations or compositions may be used. Good. For example, the water conduit 104 may have a streamline shape, and a flow path of the aqueous solution may be formed via the outside of the housing. Alternatively, for example, the water conduit 104 and the housing of the mist generator may be integrally formed.

  (E) In the above-described embodiment, the ventilation filter 106 and the ventilation hole 107 are provided directly below the ultrasonic transducer 102, but these may be provided at other positions. For example, an air filter 106 and an air vent 107 may be provided below the ultrasonic transducer 102 and on the side of the housing of the mist generator 100 to discharge air and bubbles in the horizontal direction.

10 vehicle 100 mist generator 101 discharge plate (atomization part)
101a Fine hole region 102 Ultrasonic transducer (Atomization part)
103 Aqueous solution tank (water storage tank)
104 Water conduit (conveyance path)
105 Pneumatic delivery device (pressure unit)
106 Ventilation filter (ventilation part, water blocking membrane)
107 Vent (Vent)
200 Control Board 201 Microcomputer 202 Vibrator Drive Circuit (Atomization Unit)
203 Pneumatic delivery device drive circuit (pressure unit)

Claims (7)

A water storage tank for storing liquid inside,
An atomizing section for atomizing a liquid;
A transport path that forms part of a flow path for transporting the liquid stored in the water storage tank to the atomization unit;
A pressurizing unit that pressurizes the liquid stored in the water storage tank to urge the liquid to reach the atomizing unit via the transport path;
A mist generator provided below the atomization unit and provided with a ventilation unit that blocks liquid and transmits gas,
The ventilation portion is an inclined surface having a predetermined inclination angle with respect to the horizontal direction, and a hole provided in a part of the inclined surface, and ventilates the inside and outside of the mist generator. A mist generator, comprising: a mouth; and a water blocking film provided at a position in contact with the upper surface of the inclined surface and the vent. The atomization unit includes a fine hole region which is a region provided with a plurality of fine holes for discharging the mist from the inside of the mist generator to the outside.
2. The mist generator according to claim 1, wherein the ventilation portion includes the ventilation port below a position outside a horizontal outer edge of the fine hole region. The ventilation portion is provided in an arc shape centered on a region immediately below the fine hole region on the inclined surface, and is located at a position higher than the region directly below in the vertical direction. The mist generator according to claim 2, wherein an upper end of the mist generator is positioned. The water blocking film has a structure that discharges bubbles generated in the atomizing unit to the outside of the mist generator by pressure applied by the pressurizing unit, and has water repellency. The mist generator according to any one of claims 1 to 3. The mist generator according to any one of claims 1 to 4, wherein the inclined surface is provided so as to have an inclination angle of 15 degrees or more with respect to a horizontal direction. The pressurizing unit pressurizes the liquid in the water storage tank by sending air from the outside of the water storage tank to the inside of the water storage tank to increase the air pressure in the water storage tank. The mist generator according to any one of claims 5 to 6. The atomization unit includes an ultrasonic vibrator, atomizes a liquid using the ultrasonic vibrator, and is provided above the water storage tank,
The transport path forms the flow path vertically upward,
The said pressurization part pressurizes the liquid stored in the said water storage tank, pushes up this liquid via the said conveyance path, and conveys it to the said atomization part. Item 7. The mist generator according to any one of Items 6.

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