JPH09289965A - Dish washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety and to excellently discharge dew condensation water inside a ventilation path where humid circulation air is made to flow. SOLUTION: This dish washer is provided with a washing tank 2 for housing dish kinds, a jetting nozzle 3 for jetting washing water, ventilation ports 5 and 6, a water storing case 7 provided on the bottom part of the washing tank 2 for storing the washing water and the ventilation path 8 communicated to the ventilation ports 5 and 6 in a shape capable of making the dew condensation water drop in the water storing case 7 by the gravity of the dew condensation water itself even when the dew condensation water is generated inside. A blower 9 and a heating body 10 disposed inside the ventilation path 8 are operated, generated hot air is circulated and the washing water and air for drying are heated.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to a dishwasher.

[0002]

2. Description of the Related Art In a conventional dishwasher, as shown in FIG. 2, when the dishes 1 stored in a washing tank 2 are heated and washed, the water at the bottom of the washing tank 2 is pumped by the washing water stored in a case 7.
The pressure is circulated under pressure by means of, and at the same time, the water is injected from the injection nozzle 3 while being heated by the underwater heater 12. Further, for drying the tableware 1, a drying air is circulated, and a heat exchanger 13 is provided in the air passage 8 to dehumidify the moisture in the circulating air and heat it, that is, the ventilation port 5 provided in the cleaning tank 2.
The heat exchanger 13 having the cooling fan 14 in the air passage 8 communicating with the air conditioners 6 and 6, the air blower 9, and the heating body 10 are provided to circulate the humid air in the cleaning tank 2 to cool and dehumidify the heat exchanger 13. At the same time, the tableware 1 is dried by the warm air generated by the blower 9 and the heating body 10. Further, air is supplied from the outside of the cleaning tank 2 without forming an air circulation path, and the air is blown into the cleaning tank 2 by generating warm air by the blower 9 and the heating body 10 provided in the ventilation path 8. There is also a method of heating and drying the tableware 1. Further, in order to heat the cleaning water, the underwater heater 12 provided in the case 7 for water is air-baked, and external air is supplied into the cleaning tank 2 by a separately provided fan to send the air heated by the heater air-heating. By tableware 1
Drying has also been done for a long time.

When the blower 9 and the heating element 10 are provided in the air passage 8, the shape of the air passage 8 is as shown in FIG. 3, that is, the lowest point of the air passage 8 is warm air. It is different from the ventilation port 5 that serves as a discharge port.

[0004]

However, in the case where the underwater heater for heating the wash water is air-baked and also serves as the drying heater, when the air-baking operation is continued, the heater surface temperature reaches a high temperature of several hundreds of degrees. It was necessary to take heat measures to prevent damage to the components near the heater, and to take special safety measures (installation of an earth leakage breaker, etc.) to prevent electric leakage to the cleaning water when the heater suffers insulation breakdown.

The object of the present invention is to improve the safety by heating the wash water without using an underwater heater. Moreover, even when dew condensation water is generated in the ventilation passage through which the humid circulating air flows, The purpose of the present invention is to provide a dishwasher having an air passage shape that allows the condensed water to fall into the case due to its own weight.

[0006]

DISCLOSURE OF THE INVENTION The dishwasher of the present invention comprises:
A washing tank for storing dishes, an injection nozzle for injecting washing water provided in the washing tank, a plurality of ventilation holes provided for the washing tank, and water for storing the washing water provided at the bottom of the washing tank Case, even if dew condensation water is generated inside the ventilating ports, the dew condensation water itself causes the dew condensation water to drop into the case, and a blower arranged in this ventilation passage. Also, the washing water and the drying air can be heated by circulating the warm air generated by operating the heating element.

The present invention is a dishwashing process of washing the dishes stored in the washing tank with the above-mentioned construction by the jet washing water from the jet nozzle. The warm air sent into the cleaning tank heats the spray cleaning water and the tableware circulating in the cleaning tank by driving the spray nozzle, that is, the warm air directly contacts the spray cleaning water to perform heat exchange. After radiating heat to become low-temperature air, it is sucked into the ventilation passage from another ventilation port that communicates with the intake side of the blower, heated again by the heating element to become high-temperature air, and circulates while exchanging heat in the circulation path. . Further, the ventilation passage is shaped so that even if dew condensation water is generated inside due to the humid circulated air, the dew condensation water is water due to its own weight and can drop into the case. In the tableware drying step, the heating body and the circulation fan in the ventilation passage are operated to apply the hot air for drying to the tableware to dry the tableware.

As described above, the washing water and the dishes are heated and washed by circulating the warm air in the washing tank when the dishes are jet-washed, and when the dishes are warm-air dried, the inside of the ventilation passage is the same as the washing. Operate the fan and heating element of to heat and dry the tableware.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, a cleaning tank 2 for storing and cleaning the dishes 1 and a cleaning case 2 provided at the bottom of the cleaning tank 2 and a cleaning pump for circulating the cleaning water stored in the cleaning case 7 under pressure. 4, rotatably locked injection nozzle 3 for injecting the cleaning water pressurized by the cleaning pump 4 into the cleaning tank 2, the ventilation port 5 and the ventilation port 6 provided in the cleaning tank 2, the ventilation port 5, 6 is a ventilation path 8 communicating with each other, and the ventilation path 8 is provided with a blower 9 and a heating body 10.

That is, when the cleaning water stored in the case 7 for the water at the bottom of the cleaning tank 2 is pressurized by the cleaning pump 4 and supplied to the spray nozzle 3, the spray nozzle 3 sprays the clean water and spray cleans it. While being rotated by the reaction force of water, the dishes 1 stored in the washing tank 2 are uniformly spray-washed. The washing water after jet washing returns to the case 7 due to its own weight because it is the water at the bottom of the washing tank 2 and is pressurized again by the washing pump 4.
It is circulated in the cleaning tank 2 through the injection from the injection nozzle 3.
In general, warm water is used to enhance the cleaning power for dishes with stains, and therefore the cleaning water is heated. However, the blower 9 and the heating body 10 are operated at the same time as the jet cleaning operation, and the generated high temperature is generated. The air is blown into the cleaning tank 2 through the ventilation port 5. The high-temperature air passes through the jet cleaning water that is jetted into the washing tank 2 by the jet nozzle 3 and diffuses in a film shape. At this time, direct heat exchange is performed and the washing water is heated. That is, the heat energy of the high-temperature air directly touches the jet cleaning water to heat the cleaning water. After radiating heat to the jet cleaning water, the low-temperature hot air is sucked into the blower 9 from the ventilation port 6 through the air passage 8 and is again heated by the heating body 10 to become high-temperature air and sent into the cleaning tank 2. .

[0012]

According to the present invention, it is not necessary to use the underwater heater to heat the wash water as in the prior art, and the heating is performed by direct contact between the hot air and the jet wash water. A single heating element can be used for both heating of the washing water and drying of warm air, resulting in a simple structure and low cost.

(2) Since the heating element does not come into direct contact with the washing water, the safety in the case of dielectric breakdown is good.

(3) Since there is no heat source in the cleaning tank, it is not necessary to take measures against heat such as noise in the bottom of the tank and its surroundings, and the bottom of the cleaning tank can be simplified to increase the effective volume of the cleaning tank.

(4) When condensed water is generated in the warm air circulation path, the condensed water can be collected only by its own weight.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of a conventional dishwasher.

FIG. 3 is a vertical sectional view of a conventional dishwasher.

[Explanation of symbols]

2 ... cleaning tank, 3 ... injection nozzle, 4 ... cleaning pump, 5, 6
... Ventilation port, 7 ... Case for water, 8 ... Blower, 9 ... Blower, 10 ... Heating body, 11 ... Basket.

Claims (1)

[Claims] 1. In the tableware storage, the washing water pressurized by a circulation pump is sprayed from the spray holes provided in the basket for the tableware stored in the basket to wash away the dirt adhering to the tableware. In the dishwasher, a plurality of ventilation openings provided in the cleaning tank, a case for storing cleaning water provided in the bottom of the cleaning tank, a ventilation path considering the flow of dew condensation water communicating the ventilation opening, An air blower and a heating body arranged above the case for the water are provided in the ventilation passage, and warm air generated by the operation of the blower and the heating body is circulated through the ventilation passage to wash and dry the washing water. Heating the air for
A dishwasher characterized in that an escape area for condensed water generated in the ventilation passage is secured.