CN111000507A

CN111000507A - Tableware cleaning machine

Info

Publication number: CN111000507A
Application number: CN201910930472.XA
Authority: CN
Inventors: 楠健吾; 的场识义; 菊川智之
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2018-10-05
Filing date: 2019-09-29
Publication date: 2020-04-14
Also published as: JP7042446B2; JP2020058461A

Abstract

The invention provides a tableware cleaning machine. The dish washing machine includes: a cleaning tank for receiving an object to be cleaned; a cleaning nozzle for cleaning an object to be cleaned; a main air duct (14) which communicates the cleaning tank with an air inlet (11) for sucking in outside air and supplies the outside air to the cleaning tank; and an ion generation unit (18) for generating at least either of charged particulate water and ions. Further comprising: a substrate section (19) for applying a voltage to the ion generation section (18); and a bypass air passage (14a) for supplying at least either the charged fine particles or the ions generated by the ion generator (18) to the main air passage (14). The ion generating section (18) is disposed separately from the substrate section (19). Thus, the dish washing machine can be provided in which at least either of the charged fine particles and the ions can be distributed more sufficiently in the washing tub.

Description

Tableware cleaning machine

Technical Field

The present invention relates to a dishwasher having an ion generating unit.

Background

Conventionally, in a dishwasher, an object to be washed, such as tableware, is housed in a washing tub, and the object to be washed is washed with washing water sprayed from a washing nozzle. Generally, a dish washing machine is provided with a drying section. The drying section sends warm air into the cleaning tank to dry the objects to be cleaned, such as the washed dishes.

Further, conventionally, there has been developed a dishwasher including an electrostatic atomizing device for generating ion particles to perform sterilization and deodorization of a washing target such as tableware and a washing tub, and it is disclosed in, for example, japanese patent application laid-open No. 2008-237439 (hereinafter, referred to as "patent document 1").

In the conventional dish washing machine, there is a demand for more sufficiently distributing the charged fine particle water generated by the electrostatic atomization device into the washing tub.

Disclosure of Invention

The invention provides a dish washing machine which can make charged particle water generated by an electrostatic atomization device more fully spread in a washing tank.

The dish washing machine of the present invention comprises: a cleaning tank for receiving an object to be cleaned; a cleaning nozzle for cleaning an object to be cleaned; and a main air passage which communicates the cleaning tank with an air inlet for sucking external air, and supplies the external air directly to the cleaning tank or heats the external air and supplies the heated external air to the cleaning tank. The dish washing machine further includes: an ion generating unit for generating at least one of charged particulate water and ions; a substrate unit for applying a voltage to the ion generating unit; and a bypass air passage for supplying at least one of the charged fine particles and the ions generated by the ion generator to the main air passage. The ion generating section is disposed apart from the substrate section.

With this configuration, at least either of the charged fine particles and the ions generated by the electrostatic atomization device can be distributed more sufficiently in the cleaning tank.

Drawings

Fig. 1 is a schematic perspective view showing the structure of a dish washing machine according to embodiment 1.

Fig. 2 is a schematic perspective view showing a structure of a lower portion in the washing tub from above the dish washing machine.

FIG. 3 is a schematic view showing an ion introducing and drying unit of the dish washing machine.

Fig. 4 is a schematic view of the iontophoresis and drying unit of fig. 3 viewed from the back side.

Fig. 5 is a schematic cross-sectional view showing the structure of the electrostatic atomization device (ion generation unit) of the dish washing machine.

Fig. 6A is a front view of an ion generation unit of the dish washing machine according to embodiment 2.

Fig. 6B is a rear view of the ion generating part of fig. 6A.

Fig. 7 is a schematic perspective view showing a case where an ion generating unit is incorporated in an ion introducing and drying unit of the dish washing machine according to embodiment 2.

Detailed Description

Hereinafter, a dishwasher according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, substantially the same members are denoted by the same reference numerals.

(embodiment mode 1)

Hereinafter, a dish washing machine 10 according to embodiment 1 will be described with reference to fig. 1 to 4.

Fig. 1 is a schematic perspective view showing the structure of a dish washing machine 10 according to embodiment 1. Fig. 2 is a schematic perspective view showing a configuration of a lower portion in washing tub 2 from above dish washing machine 10. Fig. 3 is a schematic plan view showing the ion introduction and drying unit 20 of the dish washing machine 10. Fig. 4 is a schematic plan view of the dishwasher 10 as viewed from the back of the ion introduction and drying unit 20.

Hereinafter, the front surface of the dishwasher 10 shown in the drawings will be described with reference to the left-right direction as the X direction, the depth direction as the Y direction, and the vertically upward direction as the Z direction. In fig. 1 and 2, a door with a front surface omitted is illustrated to show an internal structure.

The dishwasher 10 according to embodiment 1 includes a washing tub 2 for storing objects to be washed, such as at least dishes, and a washing nozzle 5a, a washing nozzle 5b, a washing nozzle 5c, and the like for washing the objects to be washed attached to the dishes and the like.

The dishwasher 10 further includes an electrostatic atomizer 18 that is provided in a bypass air passage 14a of a main air passage 14 described later and functions as an ion generator. The electrostatic atomizing device 18 is used to generate negatively charged water of nanometer-sized charged particles or the like. The generated charged particulate water is caused to flow from the bypass air passage 14a to the main air passage 14 by the air blowing fan 12 as an air blowing device and joined together. Thereby, the air flowing mainly through main air passage 14 and sent into washing tub 2 is mixed with the charged fine particle water. Then, the charged fine particle water mixed with the air is supplied into washing tub 2, and the objects to be washed, such as dishes, and the inner surface of washing tub 2 are sterilized and deodorized.

The dish washing machine 10 is provided with an ion introducing and drying unit 20 shown in fig. 3 and 4. The ion introducing and drying unit 20 includes the electrostatic atomizing device 18 (ion generator), the substrate 19, the blower fan 12 shared by the dryer 16, the main air passage 14, and the like. Then, by driving of air-sending fan 12, at least either one of the charged fine particles and ions generated by electrostatic atomizing device 18 is supplied into washing tub 2 through bypass air passage 14a and main air passage 14. Therefore, a dedicated air blower and air passage for supplying the charged particulate water and/or ions from the ion generator to the cleaning tank 2 are not required. Thus, an inexpensive dish washing machine can be provided.

That is, in the dishwasher according to embodiment 1, the electrostatic atomization device 18 functioning as the ion generator is not disposed in the main air passage 14, but disposed in the bypass air passage 14a branched from the main air passage 14. Therefore, the charged fine particle water generated by the electrostatic atomization device 18 can be sufficiently distributed in the cleaning tank 2. That is, when the electrostatic atomizing device 18 is provided in the main duct 14, the air volume of the main duct 14 is excessively large, and therefore most of the condensed water around the discharge electrode 18c of the peltier unit 18a is blown off, and ions and charged fine particle water are less likely to be generated. On the other hand, when the electrostatic atomizing device 18 is provided in the bypass duct 14a, the volume of air in the bypass duct 14a is considerably smaller than that in the main duct 14, and therefore the condensed water around the discharge electrode 18c is not easily blown off. Therefore, the condensed water condensed around the cooled discharge electrode 18c can be discharged, and ions and charged particulate water can be efficiently generated. This allows ions and charged water particles generated by the electrostatic atomizer 18 to be sufficiently distributed into the cleaning tank 2 from the main air passage 14 through the bypass air passage 14 a.

Hereinafter, each component of the dish washing machine 10 will be described with reference to fig. 1 to 4.

< body >

Main body 1 constitutes the outline of dishwasher 10, and accommodates washing tub 2 and the like therein. The main body 1 may be of an in-line type and stored under a cooking table of a kitchen, for example. The main body 1 may be a main body of a dishwasher of a type that can be independently placed on a cooking table or the like.

< cleaning tank >

Cleaning tank 2 has an opening on the front surface (-Y direction) side. In washing tub 2, a dish tray (not shown) for storing articles to be washed such as dishes from the front surface side is arranged. Washing tub 2 may have an opening at the top and a dish tray for receiving objects to be washed, such as dishes, from the top is disposed.

< door >

A door (not shown) is provided to be able to open and close the opening of washing tub 2. The door is provided on the front surface side when the opening of washing tub 2 is located on the front surface side, and on the upper side when the opening is located on the upper side. The door may be 1 piece or a combination of two or more pieces.

In the case of opening the door toward the near front (-Y direction), the door may be opened such that the open position of the door is located below the front surface, or the door may be opened such that the open position of the door is located above the front. When the door is opened leftward (X direction) or rightward (X direction), the door may be opened so that the open position of the door is located on the left side or the right side. In the case of doors having a configuration of 2 or more, the doors may be opened symmetrically, that is, in a so-called split manner, or may be opened in the same direction.

< tableware tray >

The dish tray (not shown) is disposed so as to be accessible from the front surface side of the washing tub 2 along

rails

3a and 3b provided on, for example, both side surfaces of the inner surface of the washing tub 2 as shown in fig. 1 and 2. In the example of fig. 1 and 2, the track 3a is provided on the upper layer side and the track 3b is provided on the lower layer side, and the dish trays can be arranged in two layers.

< cleaning nozzle (cleaning part) >

The

cleaning nozzles

5a, 5b, and 5c as the cleaning units are disposed at different positions or at different heights in the cleaning tank 2, for example. The

washing nozzles

5a, 5b, and 5c spray washing water to the objects to be washed, such as dishes, stored in the dish tray, and wash the objects to be washed. Further,

washing nozzles

5a, 5b, and 5c are not limited to the above arrangement configuration, and it is desirable to arrange the washing nozzles at appropriate positions according to the configuration and shape of washing tub 2, the shape and arrangement of the dish tray, and the like.

In addition, a heater (not shown) for heating the washing water to warm water may be provided near the lower portion in washing tub 2, and the warm water may be supplied to

washing nozzles

5a, 5b, and 5 c. This further improves the cleaning efficiency.

< iontophoresis and drying Unit >

The ion introducing and drying unit 20 includes an electrostatic atomizing device 18 (ion generator), a substrate 19, a dryer 16, a blower fan 12 shared by the ion generator 18 and the dryer 16, a main air passage 14, a bypass air passage 14a, and the like. As shown in fig. 1, ion introduction and drying unit 20 is disposed in a space between an outer surface of cleaning tank 2 on the X direction side and an inner surface of main body 1, for example.

The respective components of the iontophoresis and drying unit 20 will be described in more detail below.

< main air duct >

Main air duct 14 is disposed so as to communicate an air inlet 11 (see fig. 3) of ion introducing and drying unit 20 for sucking air (outside air) outside washing tub 2 with air outlet 6 (see fig. 2) facing washing tub 2. As shown in fig. 2, main air duct 14 is disposed near a lower portion of washing tub 2, for example, toward blow-out port 6 in washing tub 2.

Air outlet 6 of main air duct 14 is not limited to being disposed near the lower portion of washing tub 2, and may be disposed at any one of a side portion, a front portion, and an upper portion of the inner surface of washing tub 2, or at a plurality of positions.

The air inlet 11 of the main air duct 14 may be provided at a position where external air can be sucked, and is not necessarily provided on the top surface side of the main body 1. For example, air inlet 11 may be provided at a position where air is sucked from between main body 1 and washing tub 2. In this case, the intake port 11 may be provided on the side surface side or the bottom surface side of the main body 1, and the air may be introduced from the side surface side or the bottom surface side.

< bypass air duct >

The bypass air passage 14a constitutes an air passage branched from the main air passage 14 of the ion introduction and drying unit 20. As shown in fig. 3 and 4, the bypass air passage 14a is formed so as to branch off on the upstream side (intake port 11) of the main air passage 14 and then join again on the downstream side of the main air passage 14. The bypass air passage 14a is formed so that the cross-sectional area thereof in the direction perpendicular (orthogonal) to the flow direction of air or the like is smaller than the cross-sectional area of the main air passage 14. Thus, when air or the like flows through the main duct 14 and the bypass duct 14a at the same flow velocity, the flow rate flowing through the bypass duct 14a is smaller than the flow rate flowing through the main duct 14.

The cross-sectional area in the bypass air passage 14a may be larger than the opening area of the inlet of the bypass air passage 14 a. Thus, the flow velocity in the bypass air passage 14a is restricted by the flow velocity at the inlet, and therefore the flow velocity in the bypass air passage 14a is slower than the flow velocity in the main air passage 14. Therefore, the condensed water necessary for generating the charged fine particle water is not easily scattered. As a result, the generation of the condensed water and the generation of the charged particulate water in the bypass air passage 14a can be appropriately controlled.

The bypass air passage 14a is disposed so that the air passage is obliquely downward in the vicinity of a junction where the bypass air passage merges into the main air passage 14. Thus, the flow direction of the charged particulate water or the like flowing out from the outlet of the bypass air passage 14a matches the flow direction of the main air passage 14. Therefore, the charged particulate water flowing through the bypass air passage 14a can smoothly merge with the air or the like flowing through the main air passage 14 without generating turbulence at the time of merging.

< blower Fan >

Blower fan 12 is disposed on the side of intake port 11 of main air passage 14, for example. As a result, as described above, the 1 blower fan 12 can be used for both the air blowing to the ion generating unit 18 and the air blowing to the drying unit 16.

In the present embodiment, the configuration in which the blower fan 12 is disposed on the upstream side (positive pressure side) of the electrostatic atomization device 18 with respect to the flow of air has been described as an example, but the present invention is not limited thereto. For example, it may be disposed downstream (negative pressure side) of the electrostatic atomization device 18. In this case, the air upstream of the main duct 14 and the air entering the bypass duct 14a from the upstream of the main duct 14 are drawn by the blower fan 12.

< Electrostatic atomizing device (ion generating section) >

The electrostatic atomization device 18 (ion generation unit) of the ion introduction and drying unit 20 is described with reference to fig. 5.

Fig. 5 is a schematic cross-sectional view showing the structure of the electrostatic atomizing device 18 functioning as an ion generating unit.

As shown in fig. 5, the electrostatic atomization device 18 includes a cooling section 18b formed of a peltier unit 18a and the like, a discharge electrode 18c, a counter electrode 18d, and the like, and operates as follows.

In the electrostatic atomization device 18, first, the discharge electrode 18c is cooled by the cooling portion 18 b. Thereby, moisture in the air existing around the discharge electrode 18c is cooled, and condensed water is generated in the discharge electrode 18 c. Further, the discharge electrode 18c may be directly cooled by the peltier unit 18 a.

Next, in a state where the condensed water is supplied to the discharge electrode 18c, a high voltage is applied between the discharge electrode 18c and the counter electrode 18d from the substrate portion 19. At this time, the condensed water at the tip portion of the discharge electrode 18c receives a large energy (repulsive force that becomes a high density electric charge). Thereby, negatively charged water and/or ions of nanometer-sized charged particles are generated and discharged. The discharged charged particulate water and/or ions flow downstream from the bypass air passage 14a, and join and mix with the air and the like flowing through the main air passage 14 at the joint. Then, the mixed air and charged fine particle water or/and ions are introduced from outlet 6 into cleaning tank 2.

< substrate section >

The substrate portion 19 is formed of a booster circuit or the like, and supplies a voltage to the electrostatic atomization device 18. The substrate portion 19 includes, for example, a transformer or the like for generating a high voltage. The substrate section 19 supplies a voltage to the peltier unit 18a and cools the cooling section 18 b.

The substrate portion 19 is disposed at a position apart from the discharge electrode 18c and the counter electrode 18d constituting the electrostatic atomization device 18. This allows the substrate portion 19 to be disposed in an insulated region.

As shown in fig. 3 and 4, the electrostatic atomizing device 18 and the substrate 19 are disposed at positions separated in the left-right direction (Y direction) with respect to the main air passage 14. In this case, the discharge electrode 18c and the counter electrode 18d of the electrostatic atomizer 18 are provided in the bypass air passage 14 a. On the other hand, the substrate 19 is disposed in an insulated region not facing either the bypass air passage 14a or the main air passage 14. Accordingly, when the dishwasher 10 is operated, for example, in a washing step or a rinsing step, without driving the blower fan 12, the entry of moisture or the like flowing back through the main air passage 14 can be prevented, and the base plate portion 19 can be protected. As a result, the substrate portion 19 can be more reliably prevented from corrosion, short-circuiting, and the like due to condensation of moisture and the like. In this case, it is more preferable that the substrate portion 19 is not disposed on the front surface (-Y direction) side but on the back surface (-Y direction) side of the dish washing machine 10. Thus, the substrate portion 19 can be disposed at a position slightly distant from the moisture discharged from the front surface side of the dish washing machine 10. As a result, the occurrence of defects in the substrate portion 19 can be further reduced.

For example, when the substrate portion 19 is provided in the bypass air passage 14a, unevenness is formed by a transformer or the like disposed on the substrate portion 19 due to a sealing process for preventing water and drip. Therefore, the bypass air passage 14a may be narrowed by the substrate 19. The generated charged fine particle water and ions may adhere to the substrate portion 19. This makes it difficult to allow a sufficient amount of charged fine particle water and ions to reach the inside of the cleaning tank. Therefore, the substrate 19 is disposed at a position away from the electrostatic atomizer 18 and not facing any insulation between the bypass air passage 14a and the main air passage 14.

In addition, in general, the performance of the electrostatic atomizer 18 for generating charged fine-particle water and/or ions cannot be sufficiently exhibited regardless of whether the amount of moisture in the periphery thereof is too large or too small. That is, much moisture is present in washing tub 2 during the washing of dishes and immediately after the washing. On the other hand, during the drying of the dishes, immediately after the drying, the washing tub 2 has less moisture. Therefore, the following structure is desired: charged fine particle water and/or ions are generated by the electrostatic atomization device 18 while outside air is sucked in, and discharged into the cleaning tank 2 together with the outside air. This can provide the optimum effect in the working environment of the dishwasher 10.

The ion generating unit is not limited to the electrostatic atomizing device for generating charged fine particle water. For example, an electrostatic atomization device not provided with a peltier unit and an ion generator that generates positive ions and negative ions by discharging electricity between a pair of electrodes may be used.

< drying section >

The dryer 16 is provided on the downstream side of the position where the bypass air passage 14a and the main air passage 14 merge together in the main air passage 14. The drying unit 16 is provided with, for example, a heater.

The drying unit 16 heats the outside air taken in from the air inlet 11 of the ion introduction and drying unit 20 to warm air.

Specifically, in the drying step of dishwasher 10, air blower fan 12 is driven to suck outside air from air inlet 11. At this time, the following structure is desired: for example, a filter (not shown) is provided, and dust and the like contained in the outside air are removed by the filter.

The sucked outside air mainly flows through the main air passage 14, and is heated in the drying unit 16 to become warm air. Then, warm air is supplied from air outlet 6 into washing tub 2.

It is desirable that the filter be disposed upstream of the main air passage 14 in the flow of the outside air entering the bypass air passage 14a from the intake port 11. With this arrangement, the air from which dust and the like are removed as much as possible can be sent to the electrostatic atomization device 18. As a result, the occurrence of dirt in the electrostatic atomizer 18 due to the adhesion of dust and the like can be prevented, and a reduction in performance of the electrostatic atomizer 18 can be prevented.

The warm air supplied to washing tub 2 dries the objects to be washed, such as dishes, and the inside of washing tub 2. After that, the air containing moisture due to drying is discharged to the outside through the exhaust port 7 (see fig. 2).

The drying unit 16 may include a dehumidifying unit. This allows the dried warm air to be discharged from washing tub 2 to the outside, thereby preventing condensation on the outer surface of dishwasher 10.

Further, the following configuration may be adopted: in the drying step, the air inlet 11 of the ion introduction and drying unit 20 can be switched to either of the outside air and the inside of the cleaning bath 2. Further, the following configuration may be adopted: air in the washing tub 2 is sucked from the air inlet 11 and circulated in the dish washing machine. This prevents a large amount of air having a high humidity and temperature in washing tub 2 from being discharged to the outside of the dish washing machine. Therefore, the user can make the surroundings of the dish washing machine a comfortable space.

The operation of the drying unit 16 may be stopped while the electrostatic atomization device 18 of the ion introduction and drying unit 20 is operated. Thus, the temperature around the electrostatic atomizer 18 does not become high, and is, for example, approximately 5 to 35 ℃. Therefore, the charged fine particle water and ions can be efficiently generated.

(embodiment mode 2)

Hereinafter, a dish washing machine according to embodiment 2 will be described with reference to fig. 6A to 7.

Fig. 6A is a front view of the ion generation unit 30 of the dish washing machine according to embodiment 2. Fig. 6B is a rear view of the ion generating unit 30 of fig. 6A. Fig. 7 is a schematic perspective view showing a case where the ion generating unit 30 is incorporated in the ion introducing and drying unit 20.

The dish washing machine according to embodiment 2 is different from the dish washing machine 10 according to embodiment 1 in that the ion generating unit 30 is integrally assembled to constitute the ion introducing and drying unit 20. Other configurations are the same as those in embodiment 1, and therefore description thereof may be omitted.

The ion generation cell 30 includes a 1 st portion 32, a 2 nd portion 34, a 3 rd portion 36, and so on. The 1 st portion 32 houses the electrostatic atomization device 18. The 2 nd portion 34 houses the substrate portion 19. The 3 rd portion 36 houses a wire (not shown) or the like connecting the electrostatic atomizing device 18 and the substrate portion 19, and the 3 rd portion 36 connects the 1 st portion 32 and the 2 nd portion 34 together.

The 1 st part 32 and the 2 nd part 34 of the ion generating unit 30 are provided on both sides with the main air duct 14 of the ion introducing and drying unit 20 interposed therebetween. Thus, the 1 st portion 32 accommodating the discharge electrode 18c and the counter electrode 18d of the electrostatic atomizer 18 communicates with the main duct 14, and constitutes the bypass duct 14 a.

The substrate 19 housed in the 2 nd portion 34 of the ion generating unit 30 is disposed in a region not facing either the bypass air passage 14a or the main air passage 14. This prevents moisture that has flowed back through main air passage 14 from flowing into substrate portion 19 when a cleaning step, a rinsing step, or the like is performed without driving blower fan 12. Therefore, the protective plate portion 19 can be protected more reliably in advance against the occurrence of a trouble due to moisture or the like.

The ion generating unit 30 is unitized and integrally configured. Therefore, as shown in fig. 7, the ion generating unit 30 can be easily assembled to form the ion introduction and drying unit 20. Accordingly, the discharge electrode 18c and the counter electrode 18d of the electrostatic atomizer 18 housed in the 1 st portion 32 and the substrate 19 housed in the 2 nd portion 34 can be disposed on both sides of the main air passage 14 with the main air passage 14 therebetween.

In fig. 7, the electrostatic atomizing device 18 and the substrate section 19 are shown in a state of being attached to the side of the ion introducing and drying unit 20, but the present invention is not limited thereto. For example, the electrostatic atomizer 18, the substrate portion 19, and a wire connecting them may be attached to the ion generating unit 30 in advance. Thus, the ion generating unit 30 can be easily assembled to the ion introducing and drying unit 20.

This improves workability and productivity.

As described above, in the dish washing machine according to embodiments 1 and 2, at least one of the charged fine particles and the ions generated by the electrostatic atomization device 10 (ion generation unit) is supplied into the washing tub 2 during a series of the washing step, the rinsing step, and the storage after the drying step. Thus, in each step, the object to be washed in washing tub 2 and the object to be washed in washing tub 2 can be deodorized and sterilized (hereinafter, abbreviated as "deodorization/sterilization step").

Specifically, for example, in the washing step and the rinsing step, the blower fan 12 is driven to suck in outside air. Then, the electrostatic atomization device 18 is driven to generate at least one of charged fine particles and ions. Then, at least either of the generated charged fine particles or ions is supplied from bypass air passage 14a to washing tub 2 through main air passage 14. On the other hand, the above-described deodorization and sterilization steps are repeatedly performed during storage. By the above operation, the generation of odor and the propagation of bacteria can be more effectively and sufficiently suppressed.

The deodorization and sterilization step may be performed before the washing step. Thereby, odor can be suppressed and bacteria can be removed before the washing step.

The structure of the present invention may be mounted on a dish dryer of a type not having a washing function. That is, the dishwasher may be mounted on a type of dishwasher that includes a drying section or the like and blows air to dry dishes in the washing tub. In this case, odor can be suppressed and bacteria can be removed in the same manner as described above.

In addition, the present disclosure includes a case where any of the various embodiments and/or examples described above is appropriately combined. The effects of the respective embodiments and/or examples can be similarly produced by using these combinations.

As described above, the dish washing machine of the present invention includes: a cleaning tank for receiving an object to be cleaned; a cleaning nozzle for cleaning an object to be cleaned; and a main air passage which communicates the cleaning tank with an air inlet for sucking external air, and supplies the external air directly to the cleaning tank or heats the external air and supplies the heated external air to the cleaning tank. The dish washing machine further includes: an ion generating unit for generating at least one of charged particulate water and ions; a substrate unit for applying a voltage to the ion generating unit; and a bypass air passage for supplying at least one of the charged fine particles and the ions generated by the ion generator to the main air passage. The ion generating unit is disposed separately from the substrate unit.

With this configuration, the electrostatic atomization device functioning as the ion generator is disposed in the bypass air passage branched from the main air passage instead of the main air passage. The substrate portion is disposed in a separate and insulated region from the bypass air passage and the main air passage. Thus, the charged water particles generated by the electrostatic atomizer can be sufficiently distributed in the cleaning tank.

In addition, it is preferable that the ion generator of the dish washing machine according to the present invention includes a discharge electrode and a counter electrode for generating at least one of the charged fine particles and the ions, the discharge electrode and the counter electrode are provided in the bypass air passage, and the substrate portion is disposed apart from the discharge electrode and the counter electrode.

With this configuration, the electrostatic atomization device functioning as the ion generator is not disposed in the main air passage but disposed in a bypass air passage branching from the main air passage. Therefore, the charged water particles generated by the electrostatic atomization device can be sufficiently distributed in the cleaning tank. In addition, the substrate portion can be disposed in an insulated region that does not face either of the bypass air passage or the main air passage. Therefore, the occurrence of defects in the substrate portion can be prevented in advance and more reliably.

In the dish washing machine of the present invention, it is preferable that the discharge electrode and the counter electrode of the ion generating unit and the substrate are disposed on both sides of the main air passage.

With this configuration, when a cleaning step, a rinsing step, or the like is performed without driving the blower fan, entry of moisture that flows back in the main air passage can be prevented, and the floor portion can be protected, thereby more effectively preventing occurrence of a problem due to moisture or the like.

Further, the dish washer of the present invention includes an ion generating unit having: a 1 st part for housing a discharge electrode and a counter electrode of an ion generating part; a 2 nd portion for housing the substrate portion; and a 3 rd portion connecting the 1 st and 2 nd portions together. The 1 st and 2 nd parts of the ion generating unit are provided on both sides with the main air passage therebetween, and the 1 st part for housing the discharge electrode and the counter electrode communicates with the main air passage to form a bypass air passage.

With this structure, the ion generating unit is formed in a unitized manner. Therefore, the ion generating unit can be easily incorporated into the ion introducing and drying unit.

Claims

1. A dishwasher, wherein,

the dish washing machine includes:

a cleaning tank for receiving an object to be cleaned;

a cleaning nozzle for cleaning the object to be cleaned;

a main air passage that communicates the cleaning tank with an air inlet for sucking outside air, and supplies the outside air directly to the cleaning tank or heats the outside air and supplies the heated outside air to the cleaning tank;

an ion generating unit for generating at least one of charged particulate water and ions;

a substrate unit for applying a voltage to the ion generating unit; and

a bypass air passage for supplying at least one of the charged fine particle water and the ions generated by the ion generator to the main air passage,

the ion generating unit is disposed separately from the substrate unit.

2. The dishwasher of claim 1, wherein,

the ion generating section has a discharge electrode and an opposite electrode for generating at least either one of the charged fine particle water and the ions,

the discharge electrode and the counter electrode are disposed in the bypass air passage,

the substrate section is disposed apart from the discharge electrode and the counter electrode.

3. The dishwasher of claim 2, wherein,

the discharge electrode and the counter electrode of the ion generating unit and the substrate are disposed on both sides of the main air passage.

4. The dishwasher of claim 3, wherein,

the dish washer is provided with an ion generating unit having a 1 st part for housing the discharge electrode and the opposite electrode of the ion generating part, a 2 nd part for housing the substrate part, and a 3 rd part for connecting the 1 st part and the 2 nd part together,

the 1 st part and the 2 nd part of the ion generating unit are provided on both sides with the main air duct therebetween,

the 1 st portion for housing the discharge electrode and the counter electrode communicates with the main air passage to form a bypass air passage.