JPH0686751A - Washing/drying machine for tableware - Google Patents

Abstract

PURPOSE:To provide the tableware washing/drying machine which prevents melting of tableware, and a burn, and also, can be used for both of washing and drying by one heating unit. CONSTITUTION:The tableware washing/drying machine casts in a heating element 33 and a water flow tube 34, and also, is provided with a heating unit 35 provided with a radiator 35, and to the water flow tube 34, a water channel 25 is connected, and the radiator 35 is installed in a ventilation duct 31. In such a state, at the time of washing, washing water is heated through the water flow tube 34, and at the time of drying, hot air is supplied into a washing tank 20 through the radiator 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher / dryer used in general households.

[0002]

2. Description of the Related Art A conventional dishwasher, as shown in FIG. 5, stores a tableware basket 3 containing a tableware 1 and small items 2 such as a spoon knife in a predetermined place, and then puts a detergent into it to start operation. To do.

First, a predetermined amount of cleaning water 5 is supplied to the cleaning tank 6 by the operation of the water supply valve 4, and then the cleaning water 5 pressurized by the cleaning pump 7 is sprayed from the cleaning nozzle 8 together with the detergent. Thus, the main washing step is performed. In this main washing step, the heating unit 9 provided in the washing tank 6 is energized to heat the washing water 5 to a predetermined temperature.

After the main washing process for a predetermined time, the washing water 5 containing the dirt washed off from the dishes 1 and the small articles 2 is next.
Is drained by the drainage pump 10. Subsequently, the washing water 5 was newly supplied and sprayed from the washing nozzle 8 to rinse the dishware 1 soiled with detergent or residual food (food left on the dishes as soil) is washed. After that, the step of discharging the cleaning water 5 to the outside of the machine is repeated four times in succession to complete the rinsing step. The leftover food is the filter 1 installed in the cleaning tank 6.
Captured in 1.

Next to the rinsing step, the heating unit 9 is energized to heat the inside of the washing tank 6 to a predetermined temperature, whereby the dishes 1
Is dried by heating. After a predetermined time,
This drying step is completed and the cleaning is completed.

[0006]

In this conventional dishwasher / dryer, since the heating unit 9 is in the washing tank 6, the resin-made dishes and the like drop out of the dish basket 3 and come into contact with the heating unit 9 in the drying step. When entering, there are problems that the tableware 1 is unraveled by baking the heating unit 9 or the user comes into contact with the heating unit 9 and burns immediately after the drying process.

In order to solve this problem, there is one in which a flush pipe brazed with a sheath heater is used as a part of the wash water circulation channel. However, in this heating unit, the drying has to be performed by another heating unit, resulting in an increase in cost. In addition, scales and proteins may adhere to the inside of the running water pipe to lower the thermal efficiency, or the heating unit may be heated to a high temperature and the thermal fuse may be blown out to make cleaning impossible. Further, during heating, heat may escape from the heating unit to the air, and the thermal efficiency may drop. Further, since the flowing water pipe is heated only at the portion where the sheathed heater is brazed, there is a problem that partial corrosion occurs and durability is deteriorated.

In view of the above problems, the present invention has as a first object to provide a dishwasher / dryer provided with a heating unit for both melting and burning of dishes and for both washing and drying.

A second object of the present invention is to provide a dishwasher with improved reliability by preventing scale and protein from adhering to the running water pipe.

A third object of the present invention is to provide a dishwasher with improved heat efficiency during washing and drying.

A fourth object of the present invention is to provide a dishwasher with improved running water pipe durability.

[0012]

To achieve the above first object, the first means of the present invention is to provide a cleaning tank, a cleaning nozzle provided in the cleaning tank, and cleaning water from a cleaning pump to the cleaning nozzle. A water channel for supplying the heating element, a heating unit and a water flow pipe embedded in a good conductor and a heating unit provided with a radiator, a ventilation fan for ventilating the inside of the cleaning tank, and a ventilation duct for communicating the inside of the cleaning tank with the ventilation fan, The running water pipe of the heating unit forms a part of the water channel, and the radiator is a dishwasher provided in a part of the ventilation duct.

In order to achieve the second object, the second means of the present invention is to provide a cleaning tank, a cleaning nozzle provided in the cleaning tank, and a water channel for supplying cleaning water from the cleaning pump to the cleaning nozzle. A heating unit in which the heat generating element and the flowing water pipe are embedded in a good conductor and a radiator is provided, and the flowing water pipe of the heating unit forms a part of the water passage and a surface coating film such as fluororesin is formed on the inner wall thereof. It was a dishwasher.

In order to achieve the third object, the third means of the present invention is a cleaning tank, a cleaning nozzle provided in the cleaning tank, and a water channel for supplying cleaning water from a cleaning pump to the cleaning nozzle. The heating unit includes a heating element and a flowing water pipe embedded in a good conductor and a heat radiator, a ventilation fan for ventilating the inside of the cleaning tank, and a ventilation duct for communicating the inside of the cleaning tank with the ventilation fan. The part is brought into close contact with the cleaning tank, and the water pipe forms a part of the water channel,
The radiator is a dishwasher installed in a part of the ventilation duct.

Further, in order to achieve the fourth object, the fourth means of the present invention is a dishwasher / dryer in which the running water pipe of the heating unit is made of a corrosion resistant material such as stainless steel.

[0016]

In the above structure, the running water pipe of the heating unit is
The heating unit can be provided outside the washing tank by forming a part of the washing water channel. Therefore, even if resin tableware or the like falls out of the tableware basket, it does not come into contact with the heating unit, so even if the heating unit is air-baked in the drying process, etc., the tableware will melt or it will contact the heating unit and cause burns. The problem of can be prevented. Further, since the radiator of the heating unit is a part of the ventilation duct, the heating unit for drying can be used and the structure is simplified.

Further, by coating the inner wall of the running water pipe with a surface coating such as fluorine treatment, the peeling property of the deposits on the inner surface of the running water pipe is improved, so that even if scales, proteins, etc. temporarily adhere to the running water pipe, Peel off. For this reason, it is possible to prevent the accumulation of scales and proteins in the running water pipe and improve the reliability.

Further, by closely contacting the heating unit with the cleaning tank, the heat transfer of the heating unit is transmitted from the heating unit through the cleaning tank in addition to flowing water pipes and radiators, thereby improving the thermal efficiency during cleaning and drying. be able to.

By embedding the running water pipe together with the heating element in a good conductor such as aluminum, the heat generated by the heating element is soaked by the good conductor and reaches the running water pipe, so that the local heating of the running water pipe is eliminated. Further, the running water pipe is made of a corrosion resistant material such as stainless steel, so that the durability is improved.

[0020]

【Example】

(First Embodiment) A first embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1 and FIG. 2, 20 is a cleaning tank, 21 is a water supply valve for supplying the cleaning water 36 into the cleaning tank 20, 22 is a cleaning pump, and 23 is a cleaning nozzle communicating with the cleaning pump 22. It is provided at the top and bottom and has a plurality of injection ports 24 for injecting the cleaning water 37. 25 is a water channel for supplying the washing water from the washing pump 22 to the upper washing nozzle 23, 26 is a filter for collecting the leftover food, and the lower portion thereof is connected to the suction port of the washing pump 22 and the suction port of the drainage pump 27. There is a drainage port 28.
Numeral 29 is a dish basket for storing the article to be cleaned 36 such as dishes in the washing tank 20, 30 is a ventilation fan for ventilating the inside of the washing tank 20,
Reference numeral 31 is a ventilation duct for sending air from the ventilation fan 30 to the cleaning tank 20, 32 is a heating unit provided outside the cleaning tank 20, and a heating element 33 composed of a sheath heater and a running water pipe 34 are embedded in a good conductor such as aluminum. . The water channel 25 is connected to the running water pipe 34 and is a part of the water channel 25. Further, the heating unit 32 is integrally provided with a fin-shaped radiator 35 on the same plane as the heating element 33 and the flowing water pipe 34, and a cover covering the fin is connected to the ventilation duct 31 to connect the ventilation duct 31. It has become a part. The shape of the heat radiator 35 is not limited to that shown in the figure, and may be, for example, a pipe shape having fins inside. In this case, the heat radiator pipe itself forms a part of the duct. It will be.

The operation of the above configuration will be described below. A predetermined amount of detergent is put in, and items to be washed such as dishes 36
Is stored in the cleaning tank 20 and the operation is started. First, the cleaning water 37 is supplied by energizing the water supply valve 21.
When the washing water 37 reaches a predetermined amount, the washing pump 22 pressurizes the washing water 37 containing a detergent and supplies the washing water 37 to the washing nozzle 23, whereby the main washing process is performed by jetting from the washing nozzle 23. During the main washing process, by energizing the heating element 33, the heating unit 32 is heated and the running water pipe 34
When the cleaning water 37 circulates through the water passage 25 via the heat exchanger, heat is exchanged to heat the cleaning water 37. Then, after the temperature of the washing water 37 reaches a predetermined level, the main washing step is completed. After completion of the main washing step, the rinsing step and the drying step are performed.

In the drying step, the ventilation fan 30 is energized to send air into the cleaning tank 20 through the ventilation duct 31. At this time, the heating element 33 is energized to heat the heating unit 32. The heated heat exchanges heat with the air flowing through the ventilation duct 31 from the radiator 35 to heat the air. The heated air becomes warm air and is supplied to the cleaning tank 20 to dry the cleaned object 36. The operation is terminated after a predetermined time passes through this drying process.

As described above, according to the dishwasher / dryer of the first embodiment of the present invention, the washing water 37 is heated through the running water pipe 34 during washing, and the air is heated through the radiator 35 during drying. Since the warm air is supplied into the cleaning tank 20 to dry the object 36 to be cleaned, the heating means for cleaning / drying can be constituted by one heating unit 32. Also, the heating unit 3
Since 2 is not directly exposed in the washing tank 20, it is possible to prevent the tableware from melting or being burned.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG. The overall structure is the same as that of the first embodiment, so the explanation is omitted. In the figure, reference numeral 40 is a running water pipe of the heating unit 32, and a surface coating 41 made of a fluororesin or the like is formed on the inner wall thereof.

In the above structure, by providing the surface coating 41 on the water flow pipe 40, the peelability in the water flow pipe 40 is improved. Therefore, even if the scale or protein contained in the wash water 37 adheres to the inside of the running water pipe 40, the scale and the protein are easily peeled off, and the scale and the protein are peeled by the flow of the wash water 37. Therefore, it is possible to prevent the scale and protein from adhering to the inside of the water flow pipe 40 and improve the reliability.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to FIG. The overall structure is the same as that of the first embodiment, so the explanation is omitted. In the figure, reference numeral 45 is a heating unit, and a heating element 46 is provided in
Also, it is cast with a good conductor such as aluminum together with the radiator 48 and is in close contact with the cleaning tank 20.

In the above structure, the heating unit 45 is
By being in close contact with the cleaning tank 20, the heating unit 4
The heat generated from 5 is transmitted from the heating unit 45 through the cleaning tank 20 as well as through the running water pipe 47 and the radiator 48, so that the thermal efficiency can be improved.

(Fourth Embodiment) The fourth embodiment of the present invention will be described below. Flowing water pipes 34, 4 in FIGS.
Reference numerals 0 and 47 are made of a corrosion-resistant material such as stainless steel, and are cast with a good conductor such as aluminum together with the heating element to form a radiator to form a heating unit.

In the above structure, the heat exchange between the heating unit and the wash water is performed as before. here,
Since the running water pipe is uniformly heated and not locally heated, partial corrosion can be avoided. Further, the running water pipe is formed of a material having corrosion resistance such as stainless steel, so that the durability is improved.

[0030]

As described above, according to the present invention, the cleaning tank, the cleaning nozzle provided in the cleaning tank, the water passage for supplying the cleaning water from the cleaning pump to the cleaning nozzle, the heating element and the running water pipe are provided as good conductors. It is equipped with a heating unit that is embedded in the heat sink and has a radiator, a ventilation fan that ventilates the inside of the cleaning tank, and a ventilation duct that connects the inside of the cleaning tank and the ventilation fan, and the running water pipe of the heating unit forms a part of the water channel. In addition, by disposing the radiator in part of the ventilation duct, it is possible to prevent problems such as melting of resin tableware and burns caused by contact with the heating unit immediately after the drying process. Can be provided. In addition, since the radiator of the heating unit is part of the ventilation duct, it can be used as a heating unit for drying and the structure can be simplified.

The inner wall of the running water pipe provided in the heating unit is provided with a surface coating such as fluorinated so that scales and proteins can be prevented from adhering to the running water pipe to improve reliability. A dryer can be provided.

Further, since a part of the heating unit is brought into close contact with the outer wall of the washing tank, it is possible to provide a dishwasher with improved heat efficiency during washing and drying.

Further, by embedding the running water pipe together with the heating element in a good conductor such as aluminum, the heat generated by the heating element is soaked by the good conductor and reaches the running water pipe, so that the running water pipe is not locally heated. Moreover, since the running water pipe is made of a corrosion resistant material such as stainless steel, it is possible to provide a highly durable dishwasher.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a dishwasher according to a first embodiment of the present invention.

FIG. 2 is a partial perspective view of a heating unit of the dishwasher.

FIG. 3 is a sectional view of essential parts of a dishwasher according to a second embodiment of the present invention.

FIG. 4 is a sectional view of the essential parts of a dishwasher / dryer according to a third embodiment of the present invention.

FIG. 5 is a vertical sectional view of a conventional dishwasher / dryer.

[Explanation of symbols]

 20 Cleaning Tank 22 Cleaning Pump 23 Cleaning Nozzle 25 Water Channel 29 Tableware Basket 30 Ventilation Fan 31 Ventilation Duct 32, 45 Heating Unit 33, 46 Heating Element 34, 40, 47 Water Flow Pipe 35, 48 Radiator 41 Surface Coating

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigetoshi Kanazawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A cleaning tank, a cleaning nozzle provided in the cleaning tank, a water channel for supplying cleaning water from a cleaning pump to the cleaning nozzle, and a heating unit in which a heating element and a flowing pipe are embedded in a good conductor and a radiator is provided. A ventilation fan for ventilating the inside of the cleaning tank and a ventilation duct for communicating the inside of the cleaning tank with the ventilation fan, the water flow pipe of the heating unit forms a part of the water passage, and the radiator is one of the ventilation ducts. Dishwasher installed in the department. 2. A cleaning tank, a cleaning nozzle provided in the cleaning tank, a water channel for supplying cleaning water from a cleaning pump to the cleaning nozzle, and a heating unit in which a heating element and a running water pipe are embedded in a good conductor and a radiator is provided. And a flowing pipe of the heating unit forms a part of the water passage and a surface coating film of fluororesin or the like is formed on the inner wall of the water washing pipe. 3. A heating unit having a cleaning tank, a cleaning nozzle provided in the cleaning tank, a water channel for supplying cleaning water from a cleaning pump to the cleaning nozzle, a heating element and a running water pipe embedded in a good conductor, and a radiator provided. And a ventilation fan for ventilating the inside of the cleaning tank, and a ventilation duct for communicating the inside of the cleaning tank with the ventilation fan. The heating unit has a part of the heating unit brought into close contact with the cleaning tank, and the flowing pipe of the heating unit is a part of the water channel. And the radiator is a dishwasher installed in a part of the ventilation duct. 4. The dishwasher / dryer according to claim 1, 2 or 3, wherein the running water pipe of the heating unit is made of a corrosion resistant material such as stainless steel.