JP2020058461A - dishwasher - Google Patents

Abstract

To provide a dishwasher capable of more sufficiently spreading charged particulate water generated by an electrostatic atomizer into a washing tank.SOLUTION: A dishwasher includes: a washing tank storing objects to be washed; a washing nozzle washing the objects to be washed; a main air dust communicating the washing tank with a suction port taking in outside air to supply the outside air to the washing tank as it is or after heated; an ion generating part generating charged particulate water and/or ion; and a bypass air duct supplying the charged particulate water and/or the ion generated by the ion generating part to the main air duct. The ion generating part and a substrate part applying voltage on the ion generating part are separately arranged.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a dishwasher equipped with an ion generator.

  In a conventional dishwasher, items to be washed such as dishes are stored inside a washing tank and washed with washing water sprayed from a washing nozzle. Further, generally, a dishwasher is provided with a drying unit, and hot air is blown into the washing tank to dry the washed dishes and the like.

  Furthermore, a dishwasher equipped with an electrostatic atomizer that generates ionic particles to disinfect and deodorize objects to be washed such as dishes and a washing tank has been developed (for example, see Patent Document 1).

JP 2008-237489 A

  However, there may be a case where it is desired to fully disperse the charged fine particle water generated by the electrostatic atomizer into the cleaning tank.

  Therefore, an object of the present invention is to provide a dishwasher that can sufficiently disperse the charged fine particle water generated by the electrostatic atomizer into the cleaning tank.

The dishwasher according to the present invention includes a cleaning tank for storing the object to be cleaned,
A cleaning nozzle for cleaning the object to be cleaned,
A main air passage that communicates an intake port for taking in outside air with the cleaning tank and supplies the outside air as it is or after heating to the cleaning tank.
An ion generating part for generating charged fine particle water or / and ions,
A bypass air passage for supplying charged fine particle water or / and ions generated by the ion generator to the main air passage,
Equipped with
The ion generating section and the substrate section that applies a voltage to the ion generating section are provided separately.

  According to the dishwasher of the present invention, the charged fine particle water generated by the electrostatic atomizer can be sufficiently spread in the cleaning tank.

It is a schematic perspective view which shows the structure of the dishwasher which concerns on Embodiment 1. It is the schematic perspective view which looked at the lower part of the washing tank from the upper part of the dishwasher of FIG. It is a schematic perspective view which shows the ion introduction and drying unit in the dishwasher which concerns on Embodiment 1. It is the schematic perspective view seen from the back surface of the iontophoresis and drying unit of FIG. It is a schematic sectional drawing which shows the structure of an electrostatic atomization generator. It is a front view of the ion generation unit in the dishwasher which concerns on Embodiment 2. FIG. 6B is a back view of the ion generator of FIG. 6A. It is a schematic perspective view which shows a mode that an ion generation unit is incorporated in an ion introduction and drying unit.

A dishwasher according to a first aspect, a washing tank for storing an article to be washed,
A cleaning nozzle for cleaning the object to be cleaned,
A main air passage that communicates an intake port for taking in outside air with the cleaning tank and supplies the outside air as it is or after heating to the cleaning tank.
An ion generating part for generating charged fine particle water or / and ions,
A bypass air passage for supplying charged fine particle water or / and ions generated by the ion generator to the main air passage,
Equipped with
The ion generating section and the substrate section that applies a voltage to the ion generating section are provided separately.

  According to the above configuration, since the electrostatic atomizer that functions as the ion generator is provided in the bypass air passage branched from the main air passage, not in the main air passage, the charged fine particles generated by the electrostatic atomizer are provided. Water can be sufficiently spread in the cleaning tank. Also, the substrate portion can be arranged in an insulated section.

A dishwasher according to a second aspect is the dishwasher according to the first aspect, wherein the ion generating section has a discharge electrode and a counter electrode that generate charged fine particle water or / and ions,
The discharge electrode and the counter electrode are provided in the bypass air passage, and the substrate portion is provided apart from the discharge electrode and the counter electrode.

  According to the above configuration, since the electrostatic atomizer that functions as the ion generator is provided in the bypass air passage branched from the main air passage, not in the main air passage, the charged fine particles generated by the electrostatic atomizer are provided. Water can be sufficiently spread in the cleaning tank. Also, the substrate portion can be arranged in an insulated section.

  In the dishwasher according to the third aspect, in the second aspect, the discharge electrode and the counter electrode of the ion generating section and the substrate section may be arranged on both sides of a main air passage. .

  With the above configuration, it is possible to protect the substrate portion from moisture that flows backward in the main air passage during a cleaning process and a rinsing process in which the blower fan is not driven.

A dishwasher according to a fourth aspect is the dishwasher according to the third aspect, wherein a first portion for accommodating the discharge electrode and the counter electrode of the ion generating portion, a second portion for accommodating the substrate portion, and the first portion. An ion generation unit having a portion and a third portion connecting the second portion,
By disposing the first portion and the second portion on both sides of the main air passage with the main air passage interposed therebetween, the first portion that houses the discharge electrode and the counter electrode is communicated with the main air passage and the bypass air passage is provided. You may have the ion generation unit which comprises.

  Since the ion generating unit is unitized by the above configuration, it can be easily incorporated in the ion introducing and drying unit.

  Hereinafter, a dishwasher according to an embodiment will be described with reference to the accompanying drawings. In the drawings, substantially the same members are designated by the same reference numerals.

(Embodiment 1)
FIG. 1 is a schematic perspective view showing the configuration of the dishwasher 10 according to the first embodiment. FIG. 2 is a schematic perspective view of the lower portion of the washing tank 2 seen from above the dishwasher 10 of FIG. FIG. 3 is a schematic perspective view showing the ion introduction and drying unit 20 in the dishwasher 10 according to the first embodiment. FIG. 4 is a schematic perspective view of the iontophoresis and drying unit 20 shown in FIG. In the figure, for convenience, the front side of the dishwasher is shown from the left to the right in the X direction, the depth direction in the Y direction, and the vertically upward direction in the Z direction. Further, in FIGS. 1 and 2, the front door is omitted to show the internal structure.

  The dishwasher 10 according to the first embodiment includes a cleaning tank 2 that stores items to be washed such as dishes, and washing nozzles 5a, 5b, and 5c that wash the items to be washed such as dishes. The dishwasher 10 also includes an electrostatic atomizer 18 that functions as an ion generator in the bypass air passage 14 a of the main air passage 14. The electrostatic atomizer 18 generates negatively charged nanometer-sized charged fine particle water. The generated charged fine particle water joins the main air passage 14 from the bypass air passage 14a by the air blowing fan 12 that is an air blowing device, and is mixed with the air sent into the cleaning tank 2. The charged fine particle water mixed with air is supplied into the cleaning tank 2 to remove bacteria such as dishes and the inner surface of the cleaning tank 2 and deodorize.

  In the first embodiment, the electrostatic atomizer 18 (ion generation unit), the substrate unit 19, and the blower fan 12 that also serves as the drying unit 16 and the main air passage 14 are included, and the ion introduction and The drying unit 20 is configured. With this configuration, charged fine particle water or / and ions are supplied into the cleaning tank 2 by also using the blowing fan 12 for drying. Therefore, a dedicated air blower or air passage for supplying charged fine particle water or / and ions to the cleaning tank 2 from the ion generator is not necessary. This can provide an inexpensive dishwasher.

  According to the dishwasher according to the first embodiment, the electrostatic atomizer 18 that functions as an ion generator is provided not in the main air passage 14 but in the bypass air passage 14a branched from the main air passage. The charged fine particle water generated by the atomizer can be sufficiently spread in the cleaning tank.

  Below, each member which comprises this dishwasher is demonstrated.

<Main body>
The main body 1 stores a cleaning tank 2. The main body 1 may be stored as a built-in type under the kitchen cooking table, or may constitute a main body of a dishwasher of a type that can be independently placed on the cooking table or the like. .

<Cleaning tank>
The cleaning tank 2 usually has an opening on the front side, and a dish tray 4 for storing items to be cleaned such as dishes is arranged from the front side. It should be noted that the structure may be such that an opening is provided in the upper portion and a dish tray for storing articles to be cleaned such as dishes is arranged from the upper portion.

<Door>
The door (not shown) is provided for the opening provided in the cleaning tank 2, and is provided on the front side when the opening is on the front side and on the upper side when the opening is on the upper side. Further, the door may be one or a combination of two or more. The door may be opened toward the front side and may be located below the front surface in the open position or may be located above the front part in the open position. Alternatively, the door may be opened toward the left or the right, and the door may be located on the left side or the right side in the open position. In the case of two or more doors, so-called double door opening or symmetrical opening may be used, or the doors may open in the same direction.

<Tableware tray>
The tableware tray (not shown) can be arranged, for example, from the front side of the cleaning tank 2 along a rail 3a provided on the side surface of the cleaning tank 2. In the example of FIGS. 1 and 2, the upper rail 3a and the lower rail 3b are provided, and the tableware trays can be arranged above and below.

<Cleaning nozzle (cleaning means)>
The cleaning nozzles (cleaning means) 5a, 5b, 5c in the cleaning tank 2 spray the cleaning water on the objects to be cleaned such as tableware stored in the tableware tray for cleaning. The cleaning nozzles 5a, 5b, 5c may be arranged appropriately.
Further, a heater for heating the wash water may be provided so that the wash water is warm water.

<Ion introduction and drying unit>
The ion introduction / drying unit 20 includes an electrostatic atomizer 18 (ion generating unit), a substrate unit 19, a drying unit 16, a blower fan 12 that serves as both the ion generating unit 18 and the drying unit 16, and a main wind. It is constituted by the passage 14 and the bypass air passage 14a.

<Main wind path>
The main air passage 14 communicates with an intake port 11 that takes in outside air and an outlet port 6 to the cleaning tank 2. The outlet 6 of the main air passage 14 into the cleaning tank 2 is provided in the lower portion of the cleaning tank 2 as shown in FIG. 2, for example. The outlet 6 is not limited to the lower portion of the cleaning tank 2, and may be provided at any of the side portion, the front portion, the upper portion, or a plurality of these locations. The intake port 11 is not limited to being provided on the top surface of the main body 1 as long as it can take in outside air. Further, air may be taken in between the main body 1 and the cleaning tank 2, and in this case, air may be taken in from the side surface or the bottom surface of the main body.

<Bypass airway>
The bypass air passage 14 a is an air passage that branches from the main air passage 14, and as shown in FIGS. 3 and 4, after branching from the main air passage 14, it joins the main air passage 14 again. The bypass air passage 14 a has a smaller cross-sectional area perpendicular to the flow direction of the air passage than the main air passage 14. As a result, if the flow velocities in the respective air passages are the same, the flow rate in the bypass air passage 14a is smaller than the flow rate in the main air passage 14. By making the cross-sectional area in the bypass air passage 14a larger than that in the inlet of the bypass air passage 14a, the flow velocity in the bypass air passage 14a is made slower than the flow velocity at the inlet, that is, the flow velocity in the main air passage 14. May be. This makes it difficult for the condensed water necessary for the generation of the charged fine particle water to fly off, and the generation of the condensed water and the generation of the charged fine particle water in the bypass air passage 14a can be appropriately controlled.
Further, at the merging portion from the bypass air passage 14a to the main air passage 14, the flow direction from the outlet of the bypass air passage 14a is arranged (substantially downward) to match the main air flow. Merge along the flow direction of the passage 14.

<Blower fan>
The blower fan 12 is provided on the intake port 11 side of the main air passage 14. This allows the ion generating unit 18 and the drying unit 16 to both serve as air blowers. Although the blower fan 12 in the present embodiment is arranged on the upstream side (positive pressure) of the electrostatic atomizer 18 with respect to the flow of air, it is located on the downstream side (negative pressure) of the electrostatic atomizer 18. It may be configured such that the air is blown into the bypass air passage 14a from the main air passage 14 by the blower fan 12.

<Electrostatic atomizer (ion generator)>
FIG. 5 is a schematic configuration diagram of the electrostatic atomizer 18 that functions as an ion generator. In the electrostatic atomizer 18, as shown in FIG. 5, the electrostatic atomizer 18 first cools the water in the air to form condensed water by the cooling unit 18b including the Peltier unit 18a and the like. To generate. The generated dew condensation water is supplied to the discharge electrode 18c. In this case, the discharge electrode 18c may be directly cooled so that the water content in the air is directly condensed on the discharge electrode 18c.
Then, a high voltage is applied from the substrate portion 19 between the discharge electrode 18c and the counter electrode 18d while the condensed water is supplied to the discharge electrode 18c. At this time, the condensed water at the tip of the discharge electrode 18c receives a large amount of energy (the repulsive force of the electric charges having a high density). As a result, negatively charged nanometer-sized charged fine particle water or ions are generated and released. The discharged charged fine particle water or ions are introduced into the cleaning tank 2 through the confluence portion from the bypass air passage 14a to the main air passage 14.

<Board part>
The substrate unit 19 supplies a voltage to the ion generating unit 18. The board unit 19 includes, for example, a transformer that generates a high voltage. The board portion 19 also supplies a voltage to the Peltier unit 18a. The substrate portion 19 is provided apart from the discharge electrode 18c and the counter electrode 18d that form the ion generating portion 18. As a result, the board portion 19 can be arranged in an insulated section. In addition, the electrostatic atomizer 18 and the substrate unit 19 are separately arranged on the left and right sides with the main air passage 14 interposed therebetween. In this case, the discharge electrode 18c and the counter electrode 18d of the electrostatic atomizer 18 are provided so as to face the bypass air passage 14a, but the substrate portion 19 is provided in both the bypass air passage 14a and the main air passage 14. It is placed in a section that does not face. As a result, it is possible to protect the substrate portion 19 from moisture that flows backward through the main air passage 14 during the cleaning process and the rinsing process in which the blower fan 12 is not driven. In this case, it is more preferable that the substrate portion 19 is arranged on the back side of the dishwasher 10 instead of the front side. This allows the substrate portion 19 to be arranged at a distance from the moisture from the front side of the dishwasher 10.
It should be noted that the electrostatic atomization generator 18 cannot sufficiently exhibit the performance of generating charged fine particle water or ions even if the surrounding moisture is too much or too little. The humidity in the washing tank 2 increases during or immediately after the dishes are washed, and the humidity in the washing tank 2 decreases during or immediately after the dishes are dried. Therefore, generating the charged fine particle water or the ions by the electrostatic atomization generation device 18 while taking in the outside air and discharging it into the washing tank 2 together with the outside air exerts an optimum effect under the environment of the dishwasher 10.

  The ion generator 18 is not limited to the electrostatic atomizer that generates charged fine particle water. For example, an ion generator that does not provide a Peltier unit or that generates positive ions and negative ions in a discharge state between a pair of electrodes may be used.

<Drying part>
The drying unit 16 is provided in the main air passage 14 after the bypass air passage 14 a merges with the main air passage 14. A heater may be arranged in the drying unit 16, for example. The drying unit 16 can heat the taken-in outside air to generate warm air.
In the drying process, the blower fan 12 is driven to take in outside air from the intake port 11. At this time, dust or the like may be removed from the outside air by, for example, a filter (not shown). The taken-in outside air is heated in the drying section 16 via the main air passage 14 to become warm air, and is supplied from the outlet 6 into the cleaning tank 2. If the filter is arranged in the main air passage 14 on the upstream side of the flow of the outside air entering the bypass air passage 14a, the air from which dust and the like have been removed as much as possible is sent to the electrostatic atomizer 18, so that the electrostatic atomizer is used. It is possible to prevent the deterioration of the performance due to the contamination of 18 as much as possible. The objects to be cleaned such as dishes and the cleaning tank 2 are dried by the hot air supplied to the cleaning tank 2. After that, the air containing water is discharged from the exhaust port 7. The drying section 16 may include a dehumidifying section. In the drying step, the intake port may be switched between the outside air and the inside of the cleaning tank 2, or the air in the cleaning tank 2 may be taken into the intake port 11 and circulated.
The drying unit 16 may not be operated while the electrostatic atomizer 18 is operating.

(Embodiment 2)
FIG. 6A is a front view of the ion generating unit 30 in the dishwasher according to the second embodiment. FIG. 6B is a rear view of the ion generation unit 30 of FIG. 6A. FIG. 7 is a schematic perspective view showing how the ion generation unit 30 is incorporated in the ion introduction / drying unit 20.

  In comparison with the dishwasher according to the first embodiment, the dishwasher according to the second embodiment includes a first portion 32 that houses the electrostatic atomizer 18, a second portion 34 that houses the substrate unit 19, and a An ion generating unit 30 having a third portion 36 that accommodates a wire (not shown) that connects the electro-atomization device 18 and the substrate portion 19 and that connects the first portion 32 and the second portion 34. The difference is in the inclusion. In this ion generating unit 30, by disposing the first portion 32 and the second portion 34 on both sides of the main air passage 14 with the main air passage 14 interposed therebetween, the first portion 32 accommodating the discharge electrode 18c and the counter electrode 18d is the main air passage. The bypass air passage 14 a is formed by communicating with the air passage 14. Since the board portion 19 is arranged in a section that does not face either the bypass air passage 14a or the main air passage 14, the main air passage is not used in the cleaning process and the rinsing process in which the blower fan 12 is not driven. The substrate portion 19 can be protected from the moisture flowing back through the substrate 14.

  Since the ion generating unit 30 is unitized, it can be easily incorporated in the ion introducing and drying unit 20, as shown in FIG. 7, for example. As a result, the discharge electrode 18c, the counter electrode 18d, and the substrate portion 19 can be arranged on both sides of the main air passage 14, respectively. In FIG. 7, the electrostatic atomizer 18 and the substrate unit 19 are attached to the ion introduction and drying unit 20 side. If all of the above are attached to the side of the ion generating unit 30 in advance, it is only necessary to attach the ion generating unit 30 to the ion introducing and drying unit 20, so that the installation can be further facilitated.

In addition, according to the dishwasher according to the first and second embodiments, after the series of washing process, rinsing process and drying process, at the time of storage, the electrostatic atomizer (ion generating unit) 18 is used to wash the washing tank 2 It is possible to perform deodorization and sterilization by supplying charged fine particle water or / and ions to (in the step of deodorization and sterilization). Specifically, the blower fan 12 is driven to take in outside air, and at the same time, the electrostatic atomizer 18 generates charged fine particle water or / and ions, and the cleaning tank 2 is operated from the bypass air passage 14a through the main air passage 14. Supply to. During storage, by repeating this deodorizing / sterilizing step, generation of odor and growth of bacteria can be suppressed.
Further, the deodorizing / sterilizing step may be performed before the washing step. As a result, odor can be suppressed and germs can be removed before the washing step. Further, the configuration according to the present invention may be installed in a tableware dryer of a system that includes a so-called drying unit or the like that does not have a cleaning function and blows air to dry the tableware.

  It should be noted that the present disclosure includes appropriate combination of any of the various embodiments and / or examples described above, and each embodiment and / or example The effects of the embodiment can be achieved.

  According to the dishwasher of the present invention, since the electrostatic atomizer that functions as the ion generator is provided in the bypass air passage branched from the main air passage, not in the main air passage, the electrostatic atomizer is generated. The charged fine particle water thus made can be sufficiently spread in the cleaning tank.

1 main body 2 cleaning tanks 5a, 5b, 5c cleaning nozzle (cleaning means)
6 Blow-out port 7 Exhaust port 10 Dishwasher 11 Intake port 12 Blower fan 14 Main air passage 14a Bypass air passage 16 Drying unit 18 Electrostatic atomizer (ion generating unit)
18a Peltier unit 18b Cooling part 18c Discharge electrode 18d Counter electrode 19 Substrate part 20 Ion introduction and drying unit 30 Ion generation unit 32 First part 34 Second part 36 Third part

Claims (4)

A cleaning tank for storing the object to be cleaned,
A cleaning nozzle for cleaning the object to be cleaned,
A main air passage that communicates an intake port for taking in outside air with the cleaning tank and supplies the outside air as it is or after heating to the cleaning tank.
An ion generating part for generating charged fine particle water or / and ions,
A bypass air passage for supplying charged fine particle water or / and ions generated by the ion generator to the main air passage,
Equipped with
The dishwasher, wherein the ion generating section and the substrate section that applies a voltage to the ion generating section are provided separately from each other. The ion generator includes a discharge electrode and a counter electrode that generate charged fine particle water or / and ions,
The dishwasher according to claim 1, wherein the discharge electrode and the counter electrode are provided in the bypass air passage, and the substrate portion is provided apart from the discharge electrode and the counter electrode.   The dishwasher according to claim 2, wherein the discharge electrode and the counter electrode of the ion generating part, and the substrate part are arranged on both sides of the main air passage, respectively. It has a first part for accommodating the discharge electrode and the counter electrode of the ion generating part, a second part for accommodating the substrate part, and a third part for connecting the first part and the second part. An ion generating unit,
By disposing the first portion and the second portion on both sides of the main air passage with the main air passage interposed therebetween, the first portion that houses the discharge electrode and the counter electrode is communicated with the main air passage and the bypass air passage is provided. The dishwasher according to claim 3, further comprising an ion generating unit constituting the.

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