JPH0584216A - Tableware washing and drying machine - Google Patents

Abstract

PURPOSE:To set a necessary water content at the time of steaming process by simple constitution. CONSTITUTION:A washing chamber 4 for housing tableware is provided and in the lower part of the washing chamber 4, a heater 6 is provided and a water reservoir part 7 coming into contact with the heater 6 is provided. By heating the heater 6 at the time of steaming process, the water reservoir part 7 is heated and water in the water reservoir part 7 is evaporated. Even if water in the washing chamber 4 is drained, water by the quantity being just necessary at the time of steaming process is stored and it is evaporated, therefore, it becomes unnecessary to provide separately a device for detecting water of the quantity required for the steam process.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a dishwasher with a steam stroke.

[0002]

2. Description of the Related Art In a conventional dishwasher with a process for generating steam, the level of the washing water in the washing tank during the dishwashing process and the water level in the washing tank during the steaming process Had to be set to different water levels. This is because the amount of water required for washing and the amount of water required to generate steam differ greatly, and for this reason, a device for detecting the water level in the washing tank is used at two locations, one for the wash stroke and one for the steam stroke. Was installed in.

[0003]

However, in the conventional dishwasher / dryer, since a plurality of water level detecting devices must be provided, the number of parts is increased, and the microcomputer based on the information input from the plurality of devices is used. There is a problem that the control becomes complicated by controlling the.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a dishwasher / dryer which has a simple structure and can easily secure a necessary amount of water during a steam stroke. ..

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a heater below a washing chamber for storing dishes and has a water reservoir which is in contact with the heater and which is separated from the washing chamber. It is characterized by being provided.

[0006]

Even if the water used at this time is drained after pre-washing or rinsing the dishes, a predetermined amount of water remains in the water reservoir sectioned below the washing chamber. Next, when the heater is energized, since this heater is in contact with the water reservoir, the water reservoir is heated, and a steam stroke is performed in which the water in the water reservoir is filled as steam through the water reservoir into the cleaning tank. .. This eliminates the need to separately provide a water level detection device for setting the amount of water for the steam stroke, so that the structure of the dishwasher / dryer itself is simplified.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, FIG. 4 shows a perspective view of the entire dishwasher dryer with a dish basket (not shown) for holding dishes removed, and a washing tank 2 is provided inside the outer box 1. Then
A washing chamber 4 is formed by the washing tank 2 and a rotatable door 3 provided on the front surface.

In the washing chamber 4, tableware is housed in the upper part by an upper tableware basket (not shown), and tableware is also housed in the lower part by the lower tableware basket. These table baskets can be pulled out forward. The tableware is put in and taken out by.

A rectangular heater 6 is disposed below the cleaning chamber 4 and slightly above the inner bottom surface 5 thereof. The rectangular heater 6 is arranged above the heater 6 along the shape of the rectangular heater 6, for example. A water reservoir 7 having a concave cross section is provided. Although the bottom surface 7a of the water reservoir 7 made of metal comes into contact with the heater 6, the water reservoir 7 is provided separately from the cleaning tank 2, and thus is also separated from the side wall 8 of the cleaning tank 2. 300-5
The volume is set to store 00CC of water. The water reservoir 7 is located below the water level during the washing process, so that both the heater 6 and the water reservoir 7 are completely submerged during the washing process. The injection nozzle 9 is connected to a water conduit 10 projecting from the inner bottom surface 5, and the water conduit 10 is connected to a pump (not shown) provided below the cleaning tank 2.

Further, a tank recess 11 is provided on the inner bottom surface 5 next to the place where the water conduit 10 is connected,
Since the tank recess 11 communicates with the pump, the water in the tank recess 11 is sprayed from the spray nozzle 9 via the pump, and the wash water is circulated during the washing process. The tank recess 11 is also connected via a drain valve to a drain port that communicates with the outside to drain the wash water.

As is well known, this pump also functions as a drainage pump for forcibly discharging the water in the cleaning chamber 4 to the outside of the machine, and its switching is performed by the pump. The rotation is reversed by switching the motor that applies a driving force from the outside by a belt mechanism. Although not shown, for example, a float-type water level switch for detecting the stored water level in the cleaning chamber 4 is provided on the outer surface of the cleaning tank 2.

A control panel 12 is provided above the door 3 on the front surface of the outer box 1, and a control device 13 as a control means is provided inside the control panel 12. This control device 13 is composed of a microcomputer in detail, and based on a control program stored in advance, a water supply valve 14 and a water supply valve 14 so as to sequentially perform the steps shown in FIG.
The motor of the pump, the heater 6, and the air in the cleaning chamber 4 are circulated and a blower 16 for exhausting air from the exhaust port 15 to the outside is driven.

Next, referring to FIG. 5, the operation of the above-mentioned structure will be described. First, when the start switch of the control panel 12 is pressed, the 3-minute prewashing process starts. In this pre-washing process, after the water supply valve 14 is opened and water is supplied, the pump is rotated to inject water from the injection nozzle 9, thereby circulating the water in the cleaning chamber 4 and
Pre-wash the dishes while maintaining the water level shown in 1 above, then open the drain valve and rotate the pump in the direction opposite to the pre-wash to drain the water.

At this time, all the water in the tank recess 11 is discharged, but since the water in the water reservoir 7 is separated from the cleaning tank 2, it does not flow into the tank recess 11 and remains in the water reservoir 7. Left in.

Next, the steam stroke starts. In this 10-minute steam stroke, the heater 6 is energized to generate heat, which heats the water through the water reservoir portion 7, so that the water in the water reservoir portion 7 changes to steam, and when this steam stroke is almost completed. Then, most of the water in the water reservoir 7 is evaporated.

The steam process is a process provided to swell the stains adhered to the dishes with steam so that the stains can be easily removed in the washing process of the next process.

Subsequently, the washing process starts. This 20
In the washing process for one minute, first, water is supplied by the water level switch until it reaches a water level suitable for washing, and then the pump is driven and the heater 6 is energized to generate heat.
The water in the washing chamber 4 is heated by the water reservoir 7 and the heater 6, and the hot water is applied to the dishes from the jet nozzle 9 to circulate the washing water, thereby washing the dishes. At this time, the detergent is put into the cleaning chamber 4, so that the water becomes cleaning water containing the detergent. When this washing is finished, the wash water is drained.

Next, the water supply and the drainage are repeated a plurality of times again, and the pump is driven while maintaining the rinse water at the water level as shown in FIG. 2 to circulate the rinse water in the cleaning chamber 4 and rinse it. Do the process. After rinsing, drain the rinse water.

Next, the steam stroke for 10 minutes starts again, and this steam stroke also performs the same operation as the above-mentioned steam stroke. That is, even if the water is drained, the water of 300-500 CC still contained in the water reservoir 7 is changed into steam by the heater 6 generating heat, and when the steam stroke is almost completed, the water in the water reservoir 7 is Most of the water is evaporated. It should be noted that this steam step is extremely effective in increasing the drying efficiency in the drying step in the next step by heating the tableware itself by applying steam to the tableware.

Finally, a drying process for 20 minutes is started, and the water attached to the dishes is evaporated by this drying process. In this drying process, the heater 6 is intermittently heated and the moisture in the cleaning chamber 4 is discharged from the exhaust port 15 by the blower 16 so that the drying can be efficiently performed.

As described above, according to the present invention, the water reservoir 7 in which a predetermined amount of water is still retained even after the drainage is performed is provided below the cleaning chamber 4 separately from this, and the heater 6 is provided in the water reservoir. Since it is arranged directly below the section 7 to generate heat during the steam stroke, just the amount of water that is needed during the steam stroke, which is stored in the water reservoir section 7, evaporates, so the steam stroke There is no need to separately provide a device for detecting the required amount of water. That is, the steam stroke can be made to function easily by simply heating the heater 6. Further, since the number of detecting devices is reduced, the control device 13
There is also an effect that the amount of information processed by is reduced accordingly, and the control of the control device 13 becomes easy.

Since the steam process is performed after using water that does not contain detergent such as prewashing or rinsing, the generated steam does not contain detergent, so that it is not necessary to separately supply water for steam. .. Also,
Since it is provided above the heater 6 in the water reservoir 7,
Even if rice grains enter the water reservoir 7, it can be easily cleaned.

Further, since the water reservoir 7 together with the heater 6 is completely immersed in the washing process, the area where the heat of the heater 6 comes into contact with water increases by interposing the water reservoir 7 made of metal. Water can be heated efficiently. Further, since the heater 6 is used both for the steam stroke and for warming water during the washing stroke, it is not necessary to separately provide the heater 6.

The present invention is not limited to the above embodiment, for example, the water reservoir 7 may have the heater 6 embedded therein, and the volume may be set according to the heat generation capacity of the heater 6. However, the heater 6 and the water reservoir 7 may be appropriately modified in configuration. Further, the water reservoir portion 7 may be positioned above the water level during the washing process as long as the water circulating in the washing chamber 4 is accumulated. Further, the steam process is sufficient if it is provided after either one of the pre-washing process and the rinsing process, and it may be incorporated in the drying process. Further, by utilizing the water flowing from the tableware after washing, it can be used in a tableware dryer, and various modifications are possible.

[0026]

Industrial Applicability The present invention requires a water reservoir part under which a predetermined amount of water is still retained after the drainage, separately from the cleaning chamber, and is required during the steam stroke stored in the water reservoir part. Since a large amount of water evaporates as the heater that contacts the water reservoir evaporates, it is not necessary to separately provide a device for detecting the amount of water necessary for the steam stroke.

[Brief description of drawings]

FIG. 1 is a schematic vertical cross-sectional view of an inner bottom portion showing a water level in an early stage of a steam stroke according to the present invention.

FIG. 2 is a schematic vertical cross-sectional view of the inner bottom showing the water level during the pre-washing / washing / rinsing process of the present invention.

FIG. 3 is a perspective view of an essential part of the present invention.

FIG. 4 is a perspective view of the present invention.

FIG. 5 is a process chart of the present invention.

[Explanation of symbols]

 4 Washing room 6 Heater 7 Water reservoir

Claims (1)

[Claims] 1. A washing chamber for accommodating dishes, a heater provided below the washing chamber, and a water reservoir portion that is in contact with the heater and is provided separately from the washing chamber. And a dishwasher.