JPH07100055B2 - Dishwasher - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dishwasher for washing dishes and the like, and more particularly to heating of washing water and a deodorizing method inside the washer.

2. Description of the Related Art A conventional dishwasher has a structure as shown in FIG. 5, for example. That is, the tableware 1 stored in the cleaning tank 2 is heated and washed by spraying the cleaning water stored in the bottom of the cleaning tank 2 from the spray nozzle 5 while being pressurized and circulated by the pump 3 while being heated by the underwater heater 4. It was done.

The tableware is dried by circulating drying air, and a heat exchanger is provided in the circulation path to dehumidify the water in the circulating air and heat the system, that is, the ventilation port 9 provided in the cleaning tank 2. as well as
A heat exchanger 12 having a cooling fan 11 in a ventilation circulation 8 communicating with 10, a circulation fan 6 and a drying heater 7 are provided to circulate the humid air in the cleaning tank 2 for cooling and dehumidifying with the heat exchanger 12. The tableware was dried by the hot air generated by the circulation fan 6 and the drying heater 7.

Also, air is supplied from outside the cleaning tank without forming an air circulation path,
There is also a system in which hot air is generated by a fan and a drying heater provided in the air passage and is blown into the washing tank to heat and dry dishes. As another example of drying, an underwater heater provided at the bottom of the cleaning tank is heated for heating the cleaning water, and external air is supplied into the cleaning tank by a separately provided fan to heat the cleaning water by heating the heater. It has also been done for a long time to dry dishes by sending air.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the first and second conventional examples, a heater dedicated to drying must be separately provided for drying dishes, and an underwater heater for heating wash water is required. In the case of air-burning and also serving as a dry heater, when the air-burning operation is continued, the surface temperature of the heater reaches a high temperature of several hundreds of degrees Celsius, and thermal measures are taken to prevent damage to the components near the heater. If there was a dielectric breakdown, it was necessary to take special safety measures (installation of an earth leakage breaker, etc.) in order to leak electricity to the wash water.

Further, as a problem peculiar to the dishwasher, conventionally, an unpleasant organic odor generated by washing the residual vegetables attached to the dishware with a washing liquid, for example, an odor like a fish odor, tends to remain in the washing tank. Although there is an unfavorable sanitary problem, there has been no specific example of deodorant constitution.

In view of the problems as described above, the present invention is highly safe by heating the wash water without using an underwater heater.
Moreover, it is an object of the present invention to provide a dishwasher having an unprecedented structure that also performs deodorization in the washing tank.

Means for Solving the Problems The dishwasher of the present invention includes a washing tank for storing dishes, an injection nozzle for injecting washing water provided in the washing tank, and at least two washing nozzles provided in the washing tank. A ventilation opening, a ventilation path communicating with each of the ventilation openings, and a blower and a heating element arranged in the ventilation path, and the heating element is adjacent to the ventilation element.
Or in a dishwasher that integrally provides a catalyst body made of platinum, etc., heats the wash water by circulating the warm air generated by operating the blower and the heater, and deodorizes with the hot air catalyst body. is there.

Effect The present invention, in the dishwashing step of washing the dishes stored in the washing tank with the above-mentioned configuration with the jet cleaning water from the jet nozzle, the washing tank from the ventilation port through the ventilation passage by the operation of the blower and the heating body. The warm air sent inside heats the jet cleaning water and the tableware circulating in the washing tank by driving the jet nozzle, that is, the hot air directly contacts the jet cleaning water to perform heat exchange and radiate heat. After being turned into 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 body to become high-temperature air, and the first ventilation port → in the cleaning tank ( (Heat dissipation) → second ventilation port → ventilation path (heating) → circulates while circulating heat through the circulation path formed by the first ventilation port.

During this time, the circulating hot air is provided close to or integrally with the heating body and touches the catalyst body heated to a high temperature, so that the odorous components in the warm air are decomposed and the deodorizing effect is exerted at the same time.

As described above, the hot water is circulated in the cleaning tank when the dishes are spray-washed, whereby the cleaning water and the dishes are heated and washed, and the deodorization in the cleaning tank is simultaneously performed.

Example Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, 2 is a cleaning tank for storing and cleaning the dishes 1, 3 is a cleaning pump for circulating the cleaning water 4 stored at the bottom of the cleaning tank 2 under pressure, and 5 is a pressure applied by the cleaning pump 3. The rotatably locked spray nozzles for spraying the cleaned cleaning water 4 into the cleaning tank 2, 9 and 10 are respectively a first ventilation port and a second ventilation port provided in the cleaning tank 2, and 8 is It is a ventilation path that communicates with each of the ventilation ports, and the ventilation path 8 is provided with the blower 6, the discharge side of the blower 6, and the heating body 7. Further, a mesh-shaped catalyst body 11 is provided close to the heating body 7. The catalyst body 16 may be baked on the surface of the heating body 7 to be integrated.

The operation of this embodiment will be described below.

First, when the washing water 4 stored in the washing tank 2 is pressurized by the washing pump 3 and supplied to the jet nozzle 5, the jet nozzle 5 jets the wash water 4 and rotates by the reaction force of the jet wash water. The dishes 1 stored in the cleaning tank 2 are uniformly spray-washed. The washing water after the jet washing returns to the bottom of the washing tank 2 due to gravity, is pressurized by the washing pump 3 again, is jetted from the jet nozzle 5, and is circulated in the washing tank 2. In order to enhance the cleaning power for dishes that are generally soiled,
Although warm water is required and the cleaning water is heated for that, the blower 6 and the heating body 7 are operated at the same time as the above-mentioned jet cleaning operation, and the generated high-temperature air flows into the cleaning tank 2 through the first ventilation port 9. Blown. This hot air is blown off by the jet nozzle 5 into the cleaning tank
The cleaning water 4 which has been sprayed inside and diffused in the form of a film passes through it, at which time heat is directly exchanged and the cleaning water 4 is heated.
That is, the thermal energy held by the high-temperature air directly touches the jet cleaning water to heat the cleaning water 4.

After radiating heat to the jet cleaning water, the warm air that has become a low temperature air is sucked into the blower 6 from the second ventilation port 10 through the ventilation passage 8 and is again heated by the heating body 7 to become a high temperature air in the cleaning tank 2. Sent to. The arrows and dotted lines shown in the figure indicate the cleaning tank 2 and the ventilation passage 8.
3 shows a hot air circulation path that circulates in the closed circuit formed in FIG.

The above-mentioned warm air circulation path and the heating / radiating cycle of the circulating hot air are simplified and represented as shown in FIG.

Also, during the above circulation cycle, warm air is heated by the catalyst body 16
Since it is directly touched, it is decomposed into odorous components in the warm air and deodorized at the same time.

FIG. 4 is a vertical sectional view of a dishwasher showing a second embodiment of the present invention. This embodiment is different from the previous embodiment in the ventilation passage 8
In the middle of the damper 11, the first ventilation port 12, the second ventilation port 13
There is a ventilation opening that can be opened and closed to suck in the outside air. If you do this, when the wash water 4 is drained and the damper 11 is opened, warm air will flow as shown by the arrow to make the dishes 1 efficient. Can be dried well. 14 is a lid and 15 is a basket for arranging dishes. The deodorizing function is the same as that in the previous embodiment.

EFFECTS OF THE INVENTION As described above, according to the present invention, it is not necessary to use the underwater heater to heat the washing water as in the conventional case, and the heating is performed by the contact between the warm air and the jet washing water. 1)
One heating element can be used both for heating the wash water and for drying the warm air, and the configuration is simple and the cost is low. (2) Since the heating element does not come into direct contact with the cleaning water, the safety in the event 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) The odorous components generated in the cleaning tank during cleaning or drying come into contact with the catalyst body heated by circulating hot air to decompose and are sequentially deodorized to reduce the residual odor in the cleaning tank. It

(5) Compared to adsorbents such as activated carbon, which has a limited ability to adsorb odorous components and needs to be replaced, the catalytic heating system decomposes odorous components by contact, so the deodorizing effect is maintained semipermanently. , And so on, a great effect can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a dishwasher which is an embodiment of the present invention, FIG. 2 is a partial detailed sectional view of FIG. 1, and FIG. 3 is a schematic view showing ventilation and heat cycles of the dishwasher. Figure, 4th
The drawing is a vertical cross-sectional view of a dishwasher which is another embodiment of the present invention,
FIG. 5 is a vertical sectional view of a conventional dishwasher. 1 ... Tableware, 2 ... Washing tank, 3 ... Washing pump, 4 ...
... washing water, 5 ... injection nozzle, 6 ... blower, 7 ... heating body, 8 ... ventilation passage, 9,10 ... ventilation port, 16 ... catalyst body.

Claims (2)

[Claims] 1. A washing tank for storing and washing dishes, an injection nozzle for injecting washing water provided in the washing tank, at least two ventilation openings provided in the cleaning tank, and the respective ventilation openings. An air passage communicating with the air blower, and a blower and a heating body arranged in the air passage. The heating body is provided with a catalyst body in the vicinity of or integrally with the heating body, and by the operation of the blower and the heating body. A dishwasher that circulates the generated hot air through a ventilation path to heat the wash water and deodorize the hot air with a catalyst. 2. The dishwasher according to claim 1, wherein the ventilation passage has a ventilation opening that selectively opens and closes in accordance with the purpose of washing or drying dishes.