JP2013066593A - Washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washer with a mist generating unit in which water drops rarely reach a high voltage power supply even if an air inlet of a case of the mist generation unit is splashed with water drops, preventing the insulation of the high voltage power supply from being deteriorated.SOLUTION: A washer comprises: a case 28 having an air inlet 34 and a mist discharging port 60; and a mist generating unit 27 inside the case 28 comprising a high voltage power supply 29 and a mist generating part 30. The mist generating unit 27 introduces ambient air into the case 28 from the air inlet 34, generates mist by applying a high voltage to the mist generating part 30 from the high voltage power supply 29, and discharges the generated mist from the mist discharging port 60. The mist discharged from the mist generating unit 27 is supplied to the inside of a tank. The high voltage power supply 29 is located at a position higher than the air inlet 34 (gap g).

Description

  Embodiments described herein relate generally to a washing machine.

  In recent years, for example, as described in Patent Document 1, by supplying a mist having performance such as sterilization and deodorization into a tub, a washing machine that sterilizes and deodorizes laundry stored in the tub. Proposed. As means for generating mist, for example, there is a so-called electrostatic atomizer as described in Patent Document 2. The electrostatic atomizer has an electrode in the mist generating part, and generates mist by applying a high voltage from a high voltage power supply part in a state where water for mist generation is supplied to the mist generating part. The generated mist is directly supplied into the tank or supplied into the tank via an air passage communicating with the tank. In the latter case, a blower is often provided in the middle of the air passage, and the mist can be efficiently supplied into the tank by the blower action of the blower.

JP 2005-198860 A JP 2006-149538 A

  The mist generating unit and the high-voltage power supply unit in the electrostatic atomizer are normally housed in one case to form a mist generating unit, and the case includes a case for generating mist in the mist generating unit. There are an air intake port for taking in air from the outside, and a mist discharge port for discharging the generated mist out of the case. Among them, water that splashes when the laundry is taken out from the water in the tub or when the laundry is added to the tub when the washing machine is used. There is a concern that the electrical insulation may be lowered through the mouth into the case and applied to the high-voltage power supply.

  Therefore, even if water is splashed on the air intake port of the mist generation unit in the case of having a mist generation unit, it is difficult to reach the high voltage power supply unit, and the electrical insulation of the high voltage power supply unit is reduced. Provide no washing machine.

  In the washing machine according to the present embodiment, a tub for storing and washing laundry, and a case having an air intake and a mist discharge port are provided with a high-voltage power supply unit and a mist generating unit, A mist generating unit that takes in air outside the case from the air intake port, applies a high voltage from the high-voltage power supply unit to the mist generating unit to generate mist, and discharges the mist from the mist discharge port, The mist discharged from the mist generating unit is supplied to the inside of the tank, wherein the high-voltage power supply unit is provided at a position higher than the air intake port.

Vertical side view of the mist generating unit portion showing the first embodiment Top view of the mist generating unit Rear view of high-voltage power supply Expanded vertical side view of the mist generating part of the mist generating unit Enlarged vertical front view of the mist generating part of the mist generating unit Perspective view of the entire washing machine The perspective view which shows arrangement | positioning of the warm air supply apparatus and mist generating unit of a washing machine Schematic which shows the connection aspect of the warm air supply apparatus and mist generating unit of a washing machine FIG. 3 equivalent view showing the second embodiment

Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 8.
First, FIG. 6 mainly shows an outer shell 1 of a washing machine, and is constructed by placing and coupling an outer box 3 on a base plate 2 and placing and coupling a top cover 4 on the outer box 3. Yes. Inside the outer shell 1, a rotating tub 5, which is a tub, and a water tub 6 containing the same are disposed. Although not shown in detail, the rotary tank 5 and the water tank 6 have a vertical axis whose central axis is directed in the vertical direction, and have a bottomed cylindrical shape. In particular, the rotary tank 5 is used for water flow. In addition, the water tank 6 is configured to store water without having such holes, whereas the air tank 6 has a large number of holes for ventilation in the entire region of the peripheral side wall.

  Although not shown, a stirring body is arranged inside the rotary tank 5, and a driving device is arranged at the outer lower part of the water tank 6. This drive device is mainly composed of a motor, and stops the rotating tub 5 at the time of washing to rotate the stirrer alternately, for example, in both forward and reverse directions, and rotates the rotating tub 5 together with the stirrer at high speed in one direction during dehydration. It is designed to rotate.

  The top cover 4 has a rectangular frame shape. The top cover 4 has a laundry loading / unloading port in the central area, and an outer lid 7 for opening and closing the laundry loading / unloading port on the upper surface. In this case, the outer lid 7 is folded in half so as to be opened, and the outer lid 7 is thus opened so that the laundry can be taken in and out of the inside of the rotating tub 5. It has become. The outer lid 7 is flattened back from such an open state so as to be closed. The outer lid 7 is positioned in front of the outer lid 7 and has an operation portion at the frontmost portion of the upper surface of the top cover 4. A panel 8 is provided. The operation panel 8 has a large number of operation keys and display units for performing operations related to the washing operation, and these are connected to a control device (not shown) for controlling the operation of the washing machine.

  On the other hand, a rear panel 9 is provided at the rearmost portion of the top cover 4 located behind the outer lid 7. The rear panel 9 is provided with a tap water inlet 10 and a bath water inlet 11 on one side on the left side in the figure. Among them, the tap water supply port 10 is connected to a tap tap through a supply hose (not shown). The bath water supply port 11 is connected to a bath water pump via a bath water hose (not shown). The tap water inlet 10 and the bath water inlet 11 are connected to a water supply device (not shown) located below the rear panel 9 and disposed on the rearmost portion of the top cover 4. Thus, tap water or bath water is selectively supplied from the inside of the rotary tank 5 to the water tank 6.

  A hot air supply device 12 shown in FIG. 7 is also arranged below the rear panel 9 and on the rearmost portion of the top cover 4 along with the water supply device. Specifically, as shown in FIG. 8, the hot air supply device 12 includes a case 13 provided with a first filter 14, a second filter 15, a blower 16, a heater 17, a temperature sensor 18, and the like. doing.

  Specifically, the case 13 has a filter placement unit 13a, a blower placement unit 13b, and a heater placement unit 13c in order from the upstream side, and further upstream of the filter placement unit 13a that is the most upstream side of them. Is connected to one end of the intake duct 19. The other end of the intake duct 19 is connected to an air outlet 20 provided on the upper surface of the water tank 6. The upper surface portion of the water tank 6 is formed by an annular water tank cover 21 and an inner lid (not shown) that opens and closes an opening at the center of the water tank cover 21. An air outlet 20 is formed.

  On the other hand, one end side of the air supply duct 22 is connected to a further downstream side of the heater arrangement portion 13 c that is the most downstream side of the case 13. The other end of the air supply duct 22 is connected to an air inlet 23 provided in the upper surface of the water tank 6 (in this case, the rear part of the water tank cover 21).

  Thereby, both the upstream side and the downstream side of the case 13 communicate with the inside of the rotating tank 5 from the inside of the water tank 6, and the air in the water tank 6 and the rotating tank 5 is inhaled as shown by an arrow A in FIG. It circulates through the duct 19, the case 13, and the air supply duct 22. Thus, the intake duct 19, the case 13, and the air supply duct 22 form an air path that communicates with the water tank 6 and the rotary tank 5, in this case, a circulation air path 24.

  In the filter placement unit 13a, the first filter 14 and the second filter 15 are placed in order from the upstream side. Of these filters 14 and 15, the second filter 15 is finer than the first filter 14. Therefore, the first filter 14 captures relatively large foreign matter such as lint, and the first filter 14. The second filter 15 captures the relatively small foreign matter that has been missed.

  The blower 16 is arranged on the upstream side in the blower arrangement portion 13b. The blower 16 includes, for example, a blower blade 16a having a plurality of blade pieces such as a sirocco fan, and a motor 16b that rotationally drives the blade 16a. It arrange | positions outside the arrangement | positioning part 13b (outside of case 13). Further, an exhaust port 25 communicating with the outside is formed on the downstream side of the blower arrangement portion 13b, and a shutter 26 for opening and closing the exhaust port 25 is provided.

  The heater 17 and the temperature sensor 18 are sequentially arranged in the heater arrangement portion 13c from the upstream side. The heater 17 heats the air in the heater placement portion 13c, and the temperature sensor 18 detects the temperature of the air in the heater placement portion 13c. By these, the air which passes through the inside of the air blower arrangement | positioning part 13b is heated to the temperature suitable for drying of the laundry.

  As shown in FIG. 7, the left and right sides of the top cover 4 are generally U-shaped in cross section and have a double wall structure. The upper side is closed and the lower side is open. A mist generating unit 27 is disposed inside the right side of the left and right sides of the top cover 4.

  As shown in FIG. 1, the mist generating unit 27 is configured by providing a high-voltage power supply unit 29 and a mist generating unit 30 inside a case 28. Among them, although not shown in detail, the high-voltage power supply unit 29 is configured by a rectifier circuit, a booster circuit, or the like that converts commercial AC power into DC, and outputs a negative high voltage of −4.5 [kV], for example. It has become. In addition, the high-voltage power supply unit 29 includes a connector 31 and a circuit board 32. The rectifier circuit, the booster circuit, the connector 31 and the like are mounted on the circuit board 32, and other components except the connector 31 are mounted. The portion is covered with a mold resin 33 and sealed.

  The portion of the case 28 where the high voltage power supply unit 29 is arranged is, in short, the high voltage power supply unit arrangement unit 28a. The air intake 34 shown in FIG. 2 is provided at the bottom of the high voltage power supply unit arrangement unit 28a. As shown by B, air outside the case 28 is taken into the case 28 through the air intake 34. The bottom of the high voltage power supply unit arrangement portion 28 a is also a part of the bottom of the entire case 28, and therefore the air intake 34 is formed at the bottom of the case 28. In detail, the air intake 34 is formed by, for example, forming a plurality of small rectangular holes in the longitudinal direction of the case 28 in which the high-voltage power supply unit 29 and the mist generating unit 30 are arranged. ing.

High-voltage power supply unit 29 is present in the high position from the air inlet 34, between which is provided a predetermined gap g _1. The gap g ₁ is a slight distance of about 5 mm, for example, and therefore the air intake 34 is located in the vicinity of the high-voltage power supply unit 29. As shown in FIG. 2, the air intake 34 is not located directly under the high-voltage power supply unit 29 and is shifted downward in FIG. 2 (right side in FIG. 7), but in the vicinity of the high-voltage power supply unit 29. There is no change in being located.

  In addition, an enclosure wall 35 that surrounds the high-voltage power supply unit 29 is formed in the high-voltage power supply unit arrangement part 28 a of the case 28. In detail, the surrounding wall 35 in this case also serves as the outer wall of the case 28 (the high-voltage power supply unit arrangement portion 28a). The upper, lower, and left three walls 35a to 35c in FIG. The upper wall 35d in FIG. 2 which is also the outer wall of the power supply section 28a) and the wall 35e on the right side in FIG. 2 formed integrally with the case 28 (high voltage power supply section 28a). , 35f.

  The mold resin 33 of the high-voltage power supply unit 29 is injected into the most part of the internal space of the enclosure wall 35 and solidified. Further, the intermediate wall 35e in FIG. 2 in the enclosure wall 35 is positioned so as to partition between the high-voltage power source 29 and the air intake 34. In FIG. 2, reference numerals 36 and 37 denote attachment portions for attaching the mist generating unit 27 formed outside the case 28, and have holes 36a and 37a through which screws (not shown) as attachment members are inserted, respectively. Yes.

  The connector 31 is for connecting a commercial AC power supply to the high-voltage power supply unit 29, and the tip of a power input wire 38 for that purpose is connected via a mating connector 38a. The base end (not shown) of the power input wire 38 is connected to a commercial AC power source. FIG. 3 shows the high-voltage power supply unit 29 as viewed in a direction parallel to the plate surface of the circuit board 32. As is clear from FIG. 3 and FIG. In this case, it is provided in a lateral direction (leftward in the illustrated example) directed in the front-rear direction or the left-right direction.

  Further, in the case 28, the right wall 35 f in FIG. 1 in the surrounding wall 35 has a projecting dimension of about half from the inner upper surface to the bottom surface of the case 28. The opposite wall 39 is integrally formed. The opposite wall 39 has a protruding dimension from the bottom surface of the case 28 larger than that of the wall 35f, but has a recessed portion 40 that is recessed lower than the lowermost portion of the wall 35f.

Although not shown in the drawing, the wall 35f of the enclosure wall 35 is formed with an opening for ventilation, and the air taken in from the air intake 34 is shown in FIG. Through the mist generating chamber 46.
Thus, one end of the high-voltage electric wire 41 is connected to the circuit board 32 (output terminal) of the high-voltage power source 29, and the portion near the one end of the high-voltage electric wire 41 is connected to the recessed portion 40 (wall 35f). Between the high-voltage electric wire 41 and the power input electric wire 38 as shown by a gap g ₂ .

  In contrast, the mist generating unit 30 is configured by arranging the mist generating mechanism 44 and the water supply mechanism 45 inside the inner case 43. Of these, as shown in detail in FIGS. 4 and 5, the inner case 43 is configured by adhering and coupling an upper case 43 a to a lower case 43 b, and a mist generation chamber 46 and a mist discharge chamber 47 are provided therein. And form. In this case, the mist discharge chamber 47 is formed on the right side in FIG. 4 in the longitudinal direction of the case 28 with respect to the mist generation chamber 46 (rear in FIG. 7), and communicates with the mist generation chamber 46. Yes. Further, the bottom surface of the mist generating chamber 46 is positioned below the bottom surface of the mist discharge chamber 47.

  Further, the inner case 43 is formed with an upper intake port 48 and a lower intake port 49 positioned below it on the left side of the mist generating chamber 46 in FIG. The air taken into the mist generating chamber 46 through an opening (not shown) of the wall 35f of the wall 35 is from the upper intake port 48 and the lower intake port 49 to the mist generating mechanism 44 side as indicated by arrows D and E in FIG. Are taken into the upper and lower parts respectively.

  The mist generating mechanism 44 is provided below the mist generating chamber 46. Specifically, the mist generating mechanism 44 includes a water retention member 50, a conductive member 51, a plurality of mist emission electrodes 52, and the like. In this case, the water retention is performed from the bottom side of the mist generation chamber 46 upward. The member 50, the conductive member 51, and the mist emission electrode 52 are arranged in this order.

  The water retaining member 50 is made of a porous material, for example, a felt material made of resin fibers such as polyester, a resin foam having minute open cells, and the like, and has water absorption and water retention. The water retaining member 50 has a substantially rectangular thin sheet shape and is disposed on the bottom surface in the mist generating chamber 46, and a part of the water retaining member 50 is disposed in the mist generating chamber 46 as shown in FIG. It is arranged along the left and right sides of the lower part.

  The conductive member 51 is, for example, a blend of resin fibers such as polyester and carbon fibers as a conductive material, or a resin foam having fine open cells added with carbon powder as a conductive material. It has water absorption, water retention, and conductivity. The conductive member 51 has a generally rectangular or thick sheet shape and is provided on the upper side of the water retaining member 50. Furthermore, although not shown in the figure, the other end of the high-voltage electric wire 41 is connected to the conductive member 51, so that a high voltage output from the high-voltage power supply unit 29 passes through the high-voltage electric wire 41. Thus, it is applied to the conductive member 51.

  Here, as shown in FIG. 1, the high-voltage electric wire 41 is slack so that an intermediate portion between the one end portion and the other end portion, in this case, a portion 41 a near the conductive member 51 is located at the lowest position. ing. Accordingly, in the bottom of the case 28, a portion 28b below the mist generating chamber 46 is formed lower than other portions.

  The mist emitting electrode 52 is made of, for example, a twisted resin fiber such as polyester and a carbon fiber as a conductive material, and has water absorption, water retention, water uptake characteristics, and conductivity. . In this case, the mist emitting electrode 52 may carry platinum nanocolloid. The mist emitting electrode 52 is formed in a pin shape extending upward, and for example, four pierce the supporting member 53 upward as shown in FIG. 5, whereby the four mist emitting electrodes 52 are inserted into the supporting member 53. I support it.

  The upper part of the mist emission electrode 52 protrudes upward from the upper surface of the support member 53, has a tapered shape toward the upper side, and has a tip that is a smooth curved surface. The lower part of the mist emission electrode 52 protrudes downward from the lower surface of the support member 53, and the bottom surface and the outer peripheral surface near the bottom surface are in contact with the conductive member 51. Thereby, the mist discharge electrode 52 sucks up the water retained in the water retention member 50 through the conductive member 51, and the mist discharge electrode 52 receives the high-pressure through the conductive member 51. A negative high voltage output from the power supply unit 29 is applied.

  On the other hand, the water supply mechanism 45 is provided on the upper side in the mist generating chamber 46. Specifically, the water supply mechanism 45 includes a Peltier element 54, a cooling plate 55, a radiator 56, and the like. In this case, the cooling plate 55 is provided below the Peltier element 54, and the radiator 56 is connected to the Peltier element. It is provided above the element 54.

  The Peltier element 54 is configured by joining two kinds of metal pieces constituting the heat absorbing surface 54a and the heat generating surface 54b to form a plate shape. When a voltage is applied, the heat absorbing surface 54a is moved to the heat generating surface 54b side. A Peltier effect in which heat moves is generated, whereby the heat absorbing surface 54a is cooled and the heat generating surface 54b generates heat. The Peltier element 54 is disposed with the heat absorption surface 54a facing downward, that is, toward the mist emission electrode 52, and the heat generation surface 54b facing upward. The Peltier element 54 is energized from a commercial AC power supply via a power supply circuit (not shown) separate from the high-voltage power supply unit 29.

  The cooling plate 55 is in contact with the heat absorbing surface 54 a of the Peltier element 54. The cooling plate 55 is made of, for example, a metal plate having a high thermal conductivity such as aluminum, and the cooling plate 55 and the Peltier element 54 are held inside by a holding member 57. The holding member 57 is made of, for example, a resin having excellent insulating properties and heat resistance. Further, a holding member 58 is provided below the holding member 57, and the holding member 58 holds the support member 53 and, in turn, the mist discharge electrode 52.

  An insulating sheet 59 having a size equal to or larger than that of the cooling plate 55 is attached to the lower surface of the cooling plate 55 and the holding member 57. The insulating sheet 59 is made of, for example, a polyester film having a thickness of about 50 μm, and is excellent in water resistance and heat resistance in addition to electrical insulating edge properties. Thus, by covering the lower surface of the cooling plate 55 with the insulating sheet 59, the space between the cooling plate 55 and the mist emission electrode 52, and thus between the mist generating mechanism 44 and the Peltier element 54, can be electrically connected. Insulated.

  The radiator 56 is made of, for example, a material having high thermal conductivity such as aluminum, and integrally includes a pedestal portion 56a and a plurality of heat radiating portions 56b. The pedestal portion 56a is formed in a plate shape parallel to the heat generating surface 54b of the Peltier element 54, and is close to or in contact with the heat generating surface 54b. The heat radiating portion 56b is formed in a plate shape, and is provided upright at a right angle to the pedestal portion 56a.

  With this configuration, heat generated on the heat generating surface 54b of the Peltier element 54 by applying a voltage to the Peltier element 54 is transmitted from the pedestal portion 56a of the radiator 56 to the heat radiating portion 56b, and radiated from the heat radiating portion 56b to the air. Is done. At this time, the air taken into the upper part of the mist generating chamber 46 from the upper intake port 48 flows between the heat radiating portions 56b, whereby the heat transmitted to the heat radiating portions 56b is efficiently radiated into the air. It is like that.

  On the other hand, the heat absorbing surface 54 a of the Peltier element 54 cooled by applying a voltage to the Peltier element 54 cools the air around the insulating sheet 59 via the cooling plate 55 and the insulating sheet 59. Then, moisture in the surrounding air is condensed on the lower surface of the insulating sheet 59, and water droplets are generated. This condensed water is supplied to the mist discharge electrode 52 as water for generating mist. As described above, the water supply mechanism 45 supplies the condensed water generated in the insulating sheet 59 by driving the Peltier element 54 to the mist discharge electrode 52 of the mist generation mechanism 44 as water for mist generation. At this time, fresh fresh air is taken into the lower part of the mist generating chamber 46 from the lower intake port 49, so that water droplets can be generated efficiently.

  Here, the dimension between the lower surface of the insulating sheet 59 and the tip of the mist emitting electrode 52 is such that when the mist emitting electrode 52 does not exist below the insulating sheet 59, water droplets generated on the lower surface of the insulating sheet 59 have their own weight. Is set to a dimension that is sufficiently smaller than the vertical dimension of the water droplet, for example, about 0.5 mm. As a result, water droplets generated on the lower surface of the insulating sheet 59 come into contact with the tip of the mist emission electrode 52 and are sucked into the mist emission electrode 52 before growing to the size of dropping due to its own weight.

  As shown in FIG. 4, the inner case 43 has a mist discharge port 60 at a position on the mist discharge chamber 47 in the upper case 43a. In this case, the mist discharge port 60 is formed in an L-shaped cylindrical shape, and one end portion thereof is located in the mist discharge chamber 47 and protrudes downward, and the other end portion is located outside the inner case 43 and is disposed in the inner part. Projecting in the longitudinal direction of the case 43. One end of a connection pipe 61 is connected to the other end of the mist discharge port 60, and the other end of the connection pipe 61 has a case 13 in which the circulation air passage 24 is formed as shown in FIG. Are connected to a portion between the first filter 14 and the second filter 15 in the filter arrangement portion 13a. Thereby, the mist discharge port 60 is connected to the downstream side of the first filter 14 in the circulation air passage 24 via the connection pipe 61.

Next, the operation of the washing machine having the above configuration will be described.
When the operation mode is set by the user operating the operation panel 8, the control device (not shown) allows the laundry stored in the rotating tub 5 to be stored in the rotating tub 5 according to the set operation mode. A washing operation for washing (washing and rinsing), a dehydration operation for dehydration, a drying operation for drying, and a sterilization deodorization operation for sterilization and deodorization are executed. The washing operation and dehydration operation will be omitted, and the drying operation and sterilization / deodorization operation will be described.

First, the drying operation will be described.
When a drying operation is started, a control device (not shown) drives the blower 16 and the heater 17 and drives the shutter 26 to open the exhaust port 25. When the blower 16 is driven, the air in the water tank 6 and the rotary tank 5 circulates between the water tank 6 and the rotary tank 5 and the case 13 of the hot air supply device 12 by the air blowing action. Specifically, the air in the water tank 6 and the rotary tank 5 is sucked into the filter arrangement portion 13a of the case 13 from the air outlet 20 through the intake duct 19 by the blowing action of the blower 16, and then the blower arrangement portion 13b. And the heater arrangement portion 13c in order, and return to the water tank 6 and the rotary tank 5 from the air inlet 23 through the air supply duct 22.

  At this time, foreign matters such as lint contained in the air are removed when passing through the first filter 14 and the second filter 15 in the filter placement portion 13a. Further, the air circulated by the blower 16 is heated by the heater 17 when passing through the heater arrangement portion 13c. Thereby, warm air suitable for drying laundry is supplied from the air inlet 23, and the laundry in the rotating tub 5 is dried by exchanging heat with the warm air and deprived of moisture. The air containing moisture after finishing the drying action is again sucked into the filter placement portion 13 a by the blowing action of the blower 16.

  At this time, a negative pressure is generated in the filter arrangement portion 13 a on the upstream side of the blower 16 by the blower action of the blower 16. Due to this negative pressure, outside air is taken into the filter placement portion 13a. Specifically, the outside air enters the case 28 from the air intake 34 of the case 28 in the mist generating unit 27, and further enters the inner case 43 from the upper intake port 48 and the lower intake port 49 of the inner case 43. Then, in the inner case 43, the mist generation chamber 46, the mist discharge chamber 47, and the mist discharge port 60 are sequentially passed through the connection pipe 61 and sucked into the filter arrangement portion 13 a of the case 13 in the hot air supply device 12. .

  On the other hand, a part of the air blown downstream by the blower 16 is discharged to the outside as shown by an arrow A ′ in FIG. Thereby, a part of the air containing moisture after finishing the drying operation is discharged to the outside. In this way, a part of the air circulating between the water tank 6 and the rotary tank 5 and the case 13 of the hot air supply device 12 is replaced with fresh outside air.

Next, the sterilization and deodorization operation will be described.
When the control device (not shown) starts the sterilization and deodorization operation, first, the blower 16 is driven and a voltage is applied to the Peltier element 54. In this case, due to the negative pressure in the filter arrangement portion 13a of the case 13 in the hot air supply device 12 generated by the blowing action of the blower 16, the inner case 43 is placed in the mist generating chamber 46 as indicated by arrows D and E. The air flows from the upper intake port 48 and the lower intake port 49 to the mist discharge chamber 47 side.

  Among them, the air from the upper intake port 48 toward the mist discharge chamber 47 passes through each of the heat radiation portions 56 b of the heat radiator 56 in the water supply mechanism 45 to cool the heat radiator 56. As a result, the heat generating surface 54b of the Peltier element 54 is cooled, and water droplets generated by condensation of moisture in the surrounding air on the lower surface of the insulating sheet 59 are supplied to the mist emitting electrode 52 of the mist generating mechanism 44 as water for generating mist. Supplied. Water supply from the water supply mechanism 45 to the mist generating mechanism 44 is continued for about 10 minutes.

  Next, the control device stops supplying voltage to the Peltier element 54. Thereby, the water supply to the mist generating mechanism 44 is completed. Subsequently, the control device drives the blower 16 and applies a negative high voltage to the mist emission electrode 52. In this case, the exhaust port 25 of the blower arrangement portion 13 b of the case 13 in the hot air supply device 12 is closed by the shutter 26. The mist discharge electrode 52 generates an electrostatic atomization phenomenon when a negative high voltage is applied in a state where water is contained therein. That is, when a negative high voltage is applied to the mist emission electrode 52 in a state where water is retained inside, charges are concentrated on the tip of the mist emission electrode 52. The electric charge concentrated on the tip of the mist emission electrode 52 gives energy exceeding the surface tension to the water contained in the tip. Then, at the front end portion of the mist emitting electrode 52, an electrostatic atomization phenomenon occurs in which water given energy causes Rayleigh splitting and splits into fine mist-like particles. At this time, water particles that are negatively charged containing hydroxy radicals, that is, mist, are released from the tip of the mist emission electrode 52. This mist exhibits effects such as sterilization and deodorization due to the strong oxidizing action of hydroxy radicals.

  In this case, the mist generating mechanism 44 is not provided with a counter electrode corresponding to the mist emitting electrode 52. Therefore, the discharge from the mist emitting electrode 52 becomes very gentle. Thereby, generation | occurrence | production of harmful gases, such as ozone, can be suppressed, without generating a corona discharge between a discharge electrode and a counter electrode.

  At this time, as described above, negative pressure is generated in the filter placement portion 13a in the case 13 of the mist generating mechanism 44 by the blowing action of the blower 16 of the hot air supply device 12. Mist generated at the mist discharge electrode 52 flows to the mist discharge chamber 47 as shown by an arrow F in FIGS. 1 and 4 due to this negative pressure, and further, as shown by an arrow G in the same figure and FIG. The air is sucked into the blower arrangement portion 13 b of the case 13 in the hot air supply device 12 through the discharge port 60 and the connection pipe 61. The mist sucked into the blower arrangement portion 13 b is supplied from the inlet 23 into the water tank 6 and the rotary tank 5 by the blowing action of the blower 16.

  Thus, the mist generated by the mist generating mechanism 44 is supplied into the water tank 6 and the rotating tank 5 through the air passage communicating with the water tank 6 and the rotating tank 5, in this case, the circulation air path 24. The laundry in the rotating tub 5 is sterilized and deodorized when touched by the mist.

  As described above, the washing machine of this embodiment supplies the mist generated and released by the mist generating unit 27 to the inside of the water tank 6 and the inside of the rotary tank 5 to sterilize and deodorize the laundry. As such, in the mist generating unit 27, the high-voltage power supply unit 29 is provided at a position higher than the air intake port 34 of the case 28. As a result, when the washing machine is used, the water that splashes when the laundry is taken out from the water in the rotating tub 5 or when the laundry is additionally put into the rotating tub 5 is moved into the air intake 34. However, it is difficult to reach the high-voltage power supply unit 29, and the electrical insulation of the high-voltage power supply unit 29 can be ensured satisfactorily.

  Moreover, in the washing machine of this embodiment, the connector 31 for connecting the power input wire 38 to the high voltage | pressure power supply part 29 is comprised, and the connector 31 is provided in the direction below horizontal. Thereby, even if moisture contained in the air taken in from the air intake port 34 may be condensed in the connector 31 portion, it can be dripped from the connector 31 by gravity, so that it can enter the connector 31. Therefore, the connector 31 can be prevented from causing tracking with condensed water.

  Further, the washing machine of the present embodiment includes a high voltage electric wire 41 that connects the high voltage power supply unit 29 and the mist generating unit 30, and the high voltage electric wire 41 and the power input electric wire 38 are connected separately from each other. ing. Thereby, the insulation distance between the high voltage power supply part 29 and the high voltage electric wire 41 can be ensured, and the tracking by the dew condensation water etc. in the meantime can be prevented. In addition, it is possible to prevent noise due to switching when the commercial AC power source is set to a high voltage by the high-voltage power supply unit 29 and noise intrusion due to the voltage induced by capacitive coupling of the wire coating due to the high voltage. In this case, the output voltage of the high-voltage power supply unit 29 is −4.5 [kV], and the air insulation value is 1 [kV / mm]. .

  In the present embodiment, the air intake 34 is provided in the vicinity of the high-voltage power supply unit 29. As a result, the high-voltage power supply unit 29 that easily generates heat can be cooled by the air taken in from the air intake port 34, and the air taken in from the air intake port 34 can be heated by the heat of the high-voltage power supply unit 29. There is an effect of preventing condensation on the route through which air passes.

In addition, in the present embodiment, the case 28 of the mist generating unit 27 has an enclosure wall 35 that surrounds the high-voltage power supply unit 29. Thereby, the permeation of water into the high-voltage power supply unit 29 can be prevented by the surrounding wall 35, and the electrical insulation of the high-voltage power supply unit 29 can be ensured better.
Furthermore, in the present embodiment, the air intake 34 is provided at the bottom of the case 28 of the mist generating unit 27. As a result, it is possible to more reliably prevent water from entering the mist generating unit 27 and to smoothly discharge the water that has entered, so that the electrical insulation of the mist generating unit 27 can be ensured better. Can do.

  In addition, in the present embodiment, the high-voltage electric wire 41 is slack so as to be positioned at the lowest position in a portion between the high-voltage power supply unit 29 connected to one end thereof and the mist generating unit 30 connected to the other end. ing. Thereby, when dew condensation occurs in the high voltage electric wire 41, the dew condensation water can be dripped from the lowest part, so that the high voltage power supply unit 29 or the mist generating unit 30 can be prevented from being flooded.

In contrast to this, FIG. 9 shows a second embodiment. The same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only different parts will be described.
In this case, the connector 31 is provided downward together with the circuit board 32.
In order to cause the condensed water due to moisture contained in the air taken in from the air intake 34 to drop from the connector 31 by gravity without entering the connector 31, the connector 31 may be provided in a horizontal or lower direction. The same effect can be obtained by providing the connector 31 downward. That is, the orientation below horizontal includes not only the above-described lateral orientation but also downward orientation, and further includes an oblique downward orientation that combines them.

The washing machine as a whole may be a drum type washing machine in which the rotation axis of the rotating tub 5 and the central axis of the water tub 6 are horizontal or inclined. Further, it is not always necessary to provide the warm air supply device 12.
Furthermore, the water supply mechanism 45 is not limited to the one using the Peltier element 54, and may be, for example, a water supply case or the like that is manually supplied by the user or directly supplied from the water supply.
In addition, during the sterilization and deodorization operation, the rotary tank 5 may be stationary, or may be rotated by driving a motor.

  In addition, although embodiments of the present invention have been described, these embodiments are presented as examples, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 5 is a rotating tank (tank), 6 is a water tank (tank), 27 is a mist generating unit, 28 is a case, 29 is a high-voltage power supply unit, 30 is a mist generating unit, 31 is a connector, 34 is an air intake, Reference numeral 35 denotes an enclosure wall, 38 denotes a power input wire, 41 denotes a high voltage wire, and 60 denotes a mist discharge port.

Claims (6)

A tub for storing and washing laundry,
A case having an air intake port and a mist discharge port is provided with a high-voltage power supply unit and a mist generation unit. Air outside the case is taken in from the air intake port, and the mist generation unit is transferred from the high-voltage power supply unit to the mist generation unit. A mist is generated by applying a high voltage, and the mist is discharged from the mist discharge port;
In what supplies mist discharged from the mist generating unit to the inside of the tank,
The washing machine according to claim 1, wherein the high-voltage power supply unit is provided at a position higher than the air intake port.   The washing machine according to claim 1, further comprising a connector for connecting a power input wire to the high-voltage power supply unit, wherein the connector is provided in a horizontal or lower direction.   The washing machine according to claim 1 or 2, further comprising a high-voltage electric wire that connects the high-voltage power supply unit and the mist generating unit, and the high-voltage electric wire and the power input wire are connected separately from each other.   The washing machine according to any one of claims 1 to 3, wherein an air intake port is provided in the vicinity of the high-voltage power supply unit.   The washing machine according to any one of claims 1 to 4, wherein the case has an enclosure wall surrounding the high-voltage power supply unit.   The washing machine according to any one of claims 1 to 5, wherein an air intake port is present at the bottom of the case.

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