JP2010227774A - Electrostatic atomizer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrostatic atomizer capable of efficiently radiating the temperature in the atomizer. <P>SOLUTION: A control device 20 is constituted by mounting various electronic parts 30-36 on a circuit board 37 and the electronic parts 30-33, which have high heat value to rise to a predetermined temperature or above by the operation thereof, among the electronic parts 30-36, are set as a first electronic part group 40. The first electronic part group 40 is arranged so as to approach a radiation fin 16 as a radiation part and the cooling air of a radiation fan 17 as a blower is supplied not only to the radiation fin 16 but also to the first electronic part group 40 to cool them. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electrostatic atomizer that discharges a liquid by electrostatic atomization.

  Conventionally, by applying a high voltage to a discharge electrode to which water is attached and discharging it, the water attached to the discharge electrode is subjected to Rayleigh splitting and electrostatic atomization to generate a mist of a small size. An electroatomizing device is known (see, for example, Patent Document 1).

  In the electrostatic atomizer of Patent Document 1, the discharge electrode accommodated in the case member is cooled by a Peltier element (Peltier module), so that water is supplied to the discharge electrode based on the moisture in the air. It has become so. And the water supplied by applying a high voltage to a discharge electrode is electrostatically atomized, and a very small mist is produced | generated.

JP 2006-239632 A

  By the way, in said electrostatic atomizer, various circuits, such as a high voltage generation circuit (high voltage application part), are used in order to apply a high voltage to a discharge electrode. In this circuit, electronic components such as transistors and coils that have relatively large heat loss (large heat generation) are used, and heat is likely to be generated in the case member containing various members by these electronic components. It was.

  Moreover, in said electrostatic atomizer, the Peltier device is used in order to supply water with respect to a discharge electrode. For this reason, when the discharge electrode is cooled, heat is generated from the metal plate on the side opposite to the heat absorbing side metal plate constituting the Peltier element.

  As described above, in the electrostatic atomizer, there are a plurality of members that are likely to generate heat in the device (in the case member), and these are arranged in a scattered manner in the device, so that heat can be easily accumulated in the entire device. There was a risk of hindering circuit characteristics and cooling specification.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an electrostatic atomizer capable of efficiently radiating the temperature in the apparatus.

  In order to solve the above problems, the invention described in claim 1 includes a discharge electrode that generates a discharge based on application of a high voltage, a cooling unit, and a heat radiating unit that emits heat based on a cooling operation of the cooling unit. The cooling unit generates condensed water from moisture in the air and supplies it to the discharge electrode, and cooling air is supplied to the heat dissipating unit constituting the water supply unit to cool the water. A blower device, and at least one power supply of the discharge electrode, the water supply means and the blower device, and a control device for controlling the power supply are housed in a case member, and the supply is based on the discharge of the discharge electrode An electrostatic atomization device that discharges the generated water by electrostatic atomization, wherein the control device is configured by mounting various electronic components on a circuit board, and among the electronic components, As a result of this operation, An electronic component having a large size is used as the first electronic component, and the first electronic component is disposed in proximity to the heat radiating portion so that the cooling air of the blower is supplied to the first electronic component and cooled together with the heat radiating portion. The gist is that it is composed.

  In the present invention, the control device is configured by mounting various electronic components on a circuit board. Among the electronic components, an electronic component that generates a large amount of heat that rises by a predetermined temperature or more due to its operation is used as the first electronic component, and the first electronic component is disposed close to the heat radiating portion. One electronic component is supplied and cooled. That is, since the first electronic component, which is a member that easily generates heat, and the heat radiating portion can be brought close together (collected) and cooled by a single air blower, the temperature inside the device can be efficiently radiated. The heat generated at other points in the brackets can be reduced.

  According to a second aspect of the present invention, in the electrostatic atomization device according to the first aspect, in the electrostatic atomization device according to the first aspect, the first of the various electronic components constituting the control device. An electronic component that generates less heat than the electronic component is the second electronic component, and an electronic component having a larger housing than the first and second electronic components is the third electronic component, and the first and second electronic components are The gist is that the third electronic component having a large casing is arranged to suppress mutual alternating current atmosphere.

  In the present invention, among the various electronic components constituting the control device, an electronic component that generates less heat than the first electronic component is defined as the second electronic component, and an electronic component having a larger housing than the first and second electronic components is defined as the second electronic component. A third electronic component having a large casing is arranged between the first and second electronic components so as to suppress mutual alternating current atmosphere. That is, by arranging the third electronic component having a large casing among the electronic components constituting the control device between the first and second electronic components, the heat generated in the first electronic component is transferred to the second electronic component side. Can be suppressed, and the influence of heat on the second electronic component side can be suppressed. Therefore, desired circuit characteristics can be obtained on the second electronic component side.

  According to a third aspect of the present invention, in the electrostatic atomizer according to the first or second aspect, the control device controls a cooling operation of the water supply unit based on detection of a use environment temperature by a temperature sensor. When the case member has an air intake port, the temperature sensor is in the vicinity of the air intake port, in the vicinity of the second electronic component that is an electronic component that generates less heat than the first electronic component, or The gist is that it is arranged outside the case member.

  In the present invention, the cooling operation of the water supply means is controlled by the control device based on the detection of the use environment temperature by the temperature sensor. And when the temperature sensor has an air intake port in the case member, in the vicinity of the air intake port, in the vicinity of the second electronic component that is an electronic component that generates less heat than the first electronic component, or outside the case member. Be placed. Therefore, since the temperature sensor can be hardly affected by the heat from the first electronic component, the use environment temperature can be measured more reliably by the temperature sensor. For this reason, the discharge electrode can be suitably condensed according to the use environment temperature.

  ADVANTAGE OF THE INVENTION According to this invention, the electrostatic atomizer which can thermally radiate the temperature in an apparatus can be provided efficiently.

It is sectional drawing of the electrostatic atomizer in this embodiment. It is sectional drawing of the electrostatic atomizer in the same as the above. It is a block diagram of the electrostatic atomizer in the same as the above.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG.1 and FIG.2 shows schematic structure of the electrostatic atomizer of this embodiment. As shown in FIGS. 1 and 2, the electrostatic atomizer 10 includes a case member 11, and a discharge electrode 12 is accommodated in the case member 11. As the case member 11, a metal material, a resin material, or a composite member thereof is used. In addition, when it comprises with a metal material, it is used when protecting each circuit 21-26 mentioned later from the noise etc. which may generate | occur | produce, and when comprised with a resin material, it is suitable when ensuring insulation.

  The discharge electrode 12 is provided so as to extend toward the tip opening 11 a of the case member 11, and the tip of the discharge electrode 12 faces the tip opening 11 a side of the case member 11. An annular counter electrode 13 that is opposed to the discharge electrode 12 is disposed at the tip opening 11 a of the case member 11. The center of the hole 13 a of the counter electrode 13 is arranged so as to be on the extension line of the axial center of the discharge electrode 12.

  A Peltier element 15 as a cooling unit for cooling the discharge electrode 12 and generating condensed water on the surface of the discharge electrode 12 from moisture in the air around the discharge electrode 12 is provided at the base end of the discharge electrode 12. Abutment is arranged. The Peltier element 15 is configured by sandwiching a plurality of thermoelectric elements (not shown) between two metal plates (not shown) and causing a cooling action based on power supply. The rear surface 15a of the Peltier element 15 is provided with a heat dissipating fin 16 as a heat dissipating portion. It is formed so as to extend to the side opposite to the element 15 side. When electric power is supplied to the thermoelectric element of the Peltier element 15, the Peltier element 15 absorbs heat from the discharge electrode 12 and the like, and the heat is dissipated by the radiation fins 16 (fin portions 16a). 12 is cooled and condensed, and the condensed water is generated (supplied) at the discharge electrode 12. In the present embodiment, the Peltier element 15 and the heat radiating fins 16 constitute water supply means.

  Further, a heat radiating fan 17 serving as a blower that sends air along the planar direction of the fin portion 16 a of the heat radiating fin 16 is disposed on the side of the heat radiating fin 16. The heat radiating fan 17 takes air (outside air) into the case member 11 from the air intake port 11c formed in the side surface 11b at a substantially intermediate position in the longitudinal direction of the case member 11 by its operation, and is opposite to the side surface 11b. The air (heat) in the case member 11 is discharged to the outside from an air discharge port 11e formed on the side surface 11d. Thereby, the heat radiation of the radiation fins 16 is efficiently performed, the cooling effect by the Peltier element 15 is improved, and the ambient temperature in the case member 11 is also reduced.

  In the case member 11, a control device 20 is disposed on the base end side of the heat radiation fin 16. As shown in FIG. 3, the control device 20 includes a high voltage generation circuit 21, a high voltage detection circuit 22, a discharge current detection circuit 23, a Peltier power supply circuit 24, a temperature measurement circuit 25, and a microcomputer (microcomputer) 26. ing. The high voltage generation circuit 21 generates and supplies a high voltage to the discharge electrode 12 so as to cause corona discharge at the discharge electrode 12, and the microcomputer 26 detects the generated high voltage via the high voltage detection circuit 22. In addition, the discharge current is detected via the discharge current detection circuit 23, and the high voltage generation circuit 21 is controlled based on each detection. The Peltier power supply circuit 24 generates and supplies power to the Peltier element 15 so that the Peltier element 15 performs a cooling operation. The microcomputer 26 supplies the temperature measurement circuit 25 to the ambient temperature in the case member 11. And the Peltier power supply circuit 24 is controlled based on the detection.

  Such a control device 20 is configured by mounting various electronic components 30 to 36 and the like on the circuit board 37, and the electronic components 30 to 36 constituting the circuits 21 to 23 are roughly divided into first and second electronic components. Divided into parts groups 40 and 41.

  The first electronic component group 40 can increase by a predetermined temperature (for example, 20 degrees) or more from the ambient temperature during use of the apparatus 10 such as a switching element such as a diode or FET, a regulator, an inductor, or the like, that is, has a large heat loss (heat generation). This is a set of electronic components. On the other hand, the second electronic component group 41 is a set of electronic components that do not rise in temperature compared to the first electronic component group 40 such as an electrolytic capacitor and a fuse, that is, heat loss is small (heat generation is small). The electronic components 30 to 33 of the first electronic component group 40 are arranged close to the heat radiating fins 16 on the circuit board 37 so that the cooling air of the heat radiating fan 17 is hit. The components 34 and 35 are disposed on the circuit board 37 at a position farther than the heat radiation fins 16.

  Moreover, in this embodiment, between the 1st, 2nd electronic component groups 40 and 41, it is taller than the electronic components 30-35 of the 1st, 2nd electronic component groups 40, 41, and the housing | casing which continues in the width direction is continued. An electronic component 36 as a third electronic component such as a large high voltage application module is disposed. In other words, the air heated by the first electronic component group 40 that generates a large amount of heat is prevented from flowing toward the second electronic component group 41 by the electronic component 36.

  In the electrostatic atomizer 10 configured as described above, the microcomputer 26 supplies power from the Peltier power supply circuit 24 to the Peltier element 15, thereby cooling the front surface 15 b side of the Peltier element 15. In this way, the contact side of the Peltier element 15 with the discharge electrode 12 is cooled, so that the discharge electrode 12 is cooled, moisture in the air is condensed and water (condensed water) is supplied to the discharge electrode 12. It has become.

  When a high voltage is applied between the discharge electrode 12 and the counter electrode 13 by the high voltage generation circuit 21 in a state where water is supplied to the discharge electrode 12, the voltage is applied between the discharge electrode 12 and the counter electrode 13. Due to the high voltage, the supplied water repeatedly splits and scatters (Rayleigh splitting), and a large amount of minute mist charged positively or negatively is generated. And the produced | generated mist is discharge | released outside toward the front-end | tip opening part 11a side of the case member 11. FIG.

  Further, when electric power is supplied to the Peltier element 15 in the electrostatic atomizer 10 configured as described above, air (outside air) is taken in from the air intake port 11 c by driving the heat radiating fan 17. And since the taken-in air is carried to the air discharge port 11e side by the drive of the heat radiating fan 17, the heat of the radiating fins 16 and the first electronic component group 40 arranged in the flow path of the taken-in air Together with the taken-in air (cooling air), the air is discharged from the air discharge port 11e. At this time, the flow of air toward the second electronic component group 41 is blocked by the high voltage application module having a large casing constituting the electronic component 36, so that the heat radiation fin 16 and the first electronic component group 40 are heated. The air that reaches the second electronic component group 41 side is suppressed. Therefore, it is possible to suppress the influence exerted on the second electronic component group 41 by the heat generated in the radiating fins 16 and the first electronic component group 40, and to obtain desired circuit characteristics.

  Moreover, the electronic components 30 to 33 of the first electronic component group 40 are provided by arranging the temperature measurement circuit 25 that measures the temperature on the second electronic component group 41 side in the electrostatic atomizer 10 (in the case member 11). Since the temperature (use environment temperature) close to the outside air temperature can be measured as compared with the first electronic component group 40 side, the Peltier element 15 is cooled according to the temperature. Can do. Therefore, it becomes possible for the microcomputer 26 to suitably condense the discharge electrode 12 according to the use environment temperature.

Next, characteristic effects of the present embodiment will be described.
(1) The control device 20 is configured by mounting various electronic components 30 to 36 on a circuit board 37. Of the electronic components 30 to 36, the electronic components 30 to 33 that generate a large amount of heat that rise by a predetermined temperature or more due to the operation thereof are used as the first electronic component group 40, and the first electronic component group 40 serves as the heat radiating fin 16. The cooling air of the heat radiating fan 17 as a blower is supplied to the first electronic component group 40 and cooled together with the heat radiating fins 16. That is, since the first electronic component group 40 (electronic components 30 to 33), which are members that easily generate heat, and the radiating fins 16 can be brought close to (aggregated) and cooled by the single radiating fan 17, the apparatus 10 can be efficiently used. The temperature in the (case member 11) can be dissipated, and the heat generated at other locations in the device 10 (case member 11) can be reduced.

  (2) Among the various electronic components 30 to 36 constituting the control device 20, the electronic components 34 and 35 that generate less heat than the electronic components 30 to 33 constituting the first electronic component group 40 are defined as a second electronic component group 41. An electronic component having a housing larger than that of the first and second electronic component groups 40 and 41 is referred to as a third electronic component 36, and the alternating atmosphere of the mutual atmosphere is suppressed between the first and second electronic component groups 40 and 41. The 3rd electronic component 36 which becomes the housing | casing large in order to arrange | position is arrange | positioned. That is, by arranging the third electronic component 36 having a large casing among the electronic components 30 to 36 constituting the control device 20 between the first and second electronic component groups 40 and 41, the first electronic component group 40. The heat generated in the electronic components 30 to 33 on the side can be prevented from being transmitted to the second electronic component group 41 side, and the influence of heat on the second electronic component group 41 side can be suppressed. Therefore, desired circuit characteristics can be obtained on the second electronic component group 41 side.

  (3) The control device 20 controls the cooling operation of the Peltier element 15 constituting the water supply means based on the detection of the use environment temperature by the temperature measurement circuit 25 as a temperature sensor. And the temperature measurement circuit 25 is arrange | positioned in the vicinity of the electronic components 34 and 35 of the 2nd electronic component group 41 which is an electronic component with smaller heat_generation | fever than the electronic components 30-33 of the 1st electronic component group 40. FIG. Therefore, the temperature measurement circuit 25 can be hardly affected by the heat from the first electronic component group 40, so that the use environment temperature can be more reliably measured by the temperature measurement circuit 25. For this reason, the discharge electrode 12 can be suitably condensed according to the use environment temperature.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the temperature measurement circuit 25 is arranged on the second electronic component group 41 side where the heat loss is small compared to the first electronic component group 40 side, but this is not restrictive. For example, the same effect as described in the above (3) can be obtained even if the case member 11 is disposed outside or in the vicinity of the air intake port 11c.

In the above embodiment, the temperature measurement circuit 25 is provided, but a configuration that is omitted may be employed.
In the above-described embodiment, the third electronic component 36 configured by the high voltage application module having a large housing is disposed between the first electronic component group 40 and the second electronic component group 41. However, the configuration is not limited thereto. . For example, the third electronic component 36 may be omitted. In short, it is sufficient that the first electronic component group 40 and the second electronic component group 41 are sufficiently separated from each other.

  In the above embodiment, the first electronic component group 40, the second electronic component group 41, and the third electronic component in the electronic components 30 to 36 constituting the high voltage generation circuit 21, the high voltage detection circuit 22, and the discharge current detection circuit 23. Although the component 36 is configured, for example, other circuits configuring the control device 20 such as the Peltier power supply circuit 24 may be divided into the first electronic component group 40, the second electronic component group 41, and the like.

  DESCRIPTION OF SYMBOLS 10 ... Electrostatic atomizer, 11 ... Case member, 11c ... Air intake port, 12 ... Discharge electrode, 15 ... Peltier element as a cooling part, 16 ... Radiation fin as a heat radiating part, 17 ... Heat radiation as a blower Fan, 20 ... control device, 21 ... high voltage generation circuit, 25 ... temperature measurement circuit as temperature sensor, 30-33 ... electronic components constituting first electronic component group, 34, 35 ... constituting second electronic component group Electronic components to be used, 36 to third electronic components, 40 to first electronic component group, and 41 to second electronic component group.

Claims (3)

A discharge electrode for generating discharge based on application of a high voltage;
A water supply unit that includes a cooling unit and a heat dissipating unit that emits heat based on a cooling operation of the cooling unit, and generates condensed water from moisture in the air in the cooling unit and supplies the condensed water to the discharge electrode;
An air blower that supplies cooling air to the heat dissipating part that constitutes the water supply means to achieve cooling; and
A control device for supplying and controlling at least one power source of the discharge electrode, the water supply means and the blower;
An electrostatic atomizer that discharges the supplied water by electrostatic atomization based on the discharge of the discharge electrode,
The control device is configured by mounting various electronic components on a circuit board,
Among the electronic components, an electronic component that generates a large amount of heat and that rises by a predetermined temperature or more due to its operation is used as the first electronic component, and the first electronic component is disposed in proximity to the heat radiating portion. An electrostatic atomizer configured to be supplied to the first electronic component and cooled together with the unit. In the electrostatic atomizer of Claim 1,
Of the various electronic components constituting the control device, an electronic component that generates less heat than the first electronic component is defined as a second electronic component, and an electronic component having a larger housing than the first and second electronic components is defined as a third electronic component. Electronic components,
The electrostatic atomizer characterized in that the third electronic component having a large casing is arranged between the first and second electronic components so as to suppress mutual alternating current atmosphere. In the electrostatic atomizer of Claim 1 or 2,
The control device controls a cooling operation of the water supply unit based on detection of a use environment temperature by a temperature sensor,
When the case member has an air intake port, the temperature sensor is in the vicinity of the air intake port, in the vicinity of a second electronic component that is an electronic component that generates less heat than the first electronic component, or in the case member. An electrostatic atomizer characterized by being arranged outside.

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