JPH0545255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a dishwasher that washes dishes stored in a washing cabinet by spraying washing water onto the dishes.

[Prior Art] Conventionally, dishwashing is performed by rotating a spray nozzle using a washing water circulation device such as a circulation pump, and spraying washing water onto the dishes into a washing cabinet from a spray port provided in the spray nozzle. The machine is well known. An example of this is shown in FIG.

In the figure, 1 is the washing machine main body, 2 is a washing chamber provided in the washing machine main body 1, a water supply port 4 is provided at the bottom, and a circulation port 5 for circulating washing water at the bottom. A concave drainage basin 3 having a drainage outlet 6 is provided. 7 is a water supply pipe whose one end is connected to the water supply port 4 and the other end is connected to a water faucet etc. via an electromagnetic on-off valve 8; The end is, for example, a water pipe installed in a kitchen sink. 11
is a circulation pump connected to the circulation port, and its output side is connected to the injection nozzle 12 via a hose or the like. Reference numeral 13 indicates a plurality of injection ports provided in the injection nozzle 12. 14 is an opening provided on the front side of the washing machine main body 1; 15 is a door for opening and closing the opening 14;
22 is a rack for storing tableware 23, and a washing cabinet 2
An opening 14 along a guide rail provided therein.
It is stored in the washing chamber 2 from the beginning. Reference numeral 16 denotes a blower installed in the air passage 18 formed between the washing machine main body 1 and the washing chamber 2. Air entering from the outside air intake port 17 is passed through the air passage 18 and the communication port 1 by the blower 16.
Air is forced into the washing chamber 2 through the air outlet 9 and discharged through an exhaust passage 20 provided in the door 15. Note that a filter (not shown) is attached to the outside air intake port 17 to prevent dust and the like from entering. 21 is a heater provided at the lower part of the washing chamber 2.

The operation of the conventional dishwasher configured as described above will be explained as follows. First, Rack 22
Dirty tableware 23 is stored in the washing cabinet 2. Next, the electromagnetic on-off valve 8 is turned on to supply washing water into the washing chamber 2, and when the predetermined water level a has been reached, the electromagnetic on-off valve 8 is turned off. Next, circulation pump 1
1 is activated, the washing water is force-fed to the injection nozzle 12, and the injection nozzle 12 thereby sprays the washing water from the injection port 13 onto the tableware 23 while rotating, thereby washing the tableware 23. During this time, the cleaning water is heated to heater 2.
While being heated to a predetermined temperature by 1, it circulates through the path of the drainage basin 3, the circulation pump 11, and the injection nozzle 12.

When the cleaning process is completed, the circulation pump 11 is stopped, and the drain pump 10 is activated to discharge the dirty cleaning water in the cleaning chamber 2 to the outside through the drain pipe 9. When the drainage is finished, the blower 16 is operated to forcefully blow the outside air flowing in from the outside air intake port 17 into the washing chamber 2 through the air passage 18 and the communication port 19.
During this time, the inside of the washing cabinet 2 is heated to a predetermined temperature by the heater 21, and the introduced outside air is discharged to the outside from the exhaust path 20 while absorbing the moisture in the tableware 23. This action continues until the tableware 23 is completely dried.

[Problems to be Solved by the Invention] According to the conventional dishwasher configured as described above, water vapor is generated from hot water during washing, and the water vapor flows back from the communication port 19 to the air passage 18, It comes out from 17. At this time, water vapor adheres to the blower 16 and the filter attached to the outside air intake port 17, causing problems such as rusting the blower 16 and deteriorating the function of the filter.

The present invention was made to solve the above problems, and an object of the present invention is to provide a dishwasher that prevents water vapor from flowing back into the air passage during washing.

[Means for Solving the Problems] A dishwasher according to the present invention is provided with a damper that opens by wind pressure from a blower during drying, in a communication port that connects an air passage and a washing cabinet.

[Function] When the cleaning is completed and the drying process is started, the blower is activated, and the damper is pushed toward the cleaning chamber by the wind pressure to open the communication port. When the drying process is finished, the damper returns to its original state due to its own weight and closes the communication port. Therefore, water vapor generated from the cleaning water during cleaning is blocked by the damper and does not enter the air passage.

[Embodiment of the Invention] FIG. 1 is a sectional view showing a main part of an embodiment of the invention. Note that the same or corresponding parts as in the conventional example shown in FIG. 2 are given the same reference numerals, and the explanation thereof will be omitted. Reference numeral 24 denotes a damper for preventing water vapor generated from cleaning water from flowing back into the air passage 18 during cleaning, and is provided at a position covering the communication port 19. 25 is a hinge that rotatably supports the damper 24 by the upper side wall 2a of the washing chamber, and 26 is a stopper that prevents the damper 24 from rotating toward the air passage 18 side.
Note that the damper 24 is installed at a position such that the water supply level a during cleaning is below the damper 24.

Next, the operation of the present invention configured as described above will be explained. As shown in the figure, in the normal state, the damper 24 blocks the communication port 19 as shown by the solid line, so water vapor generated from the cleaning water during cleaning does not enter the ventilation path 18 through the communication port 19. do not have. When the cleaning process is completed and the drying process begins, the blower 16 is activated to blow air into the air passage 18. Therefore, the damper 24 is pushed toward the washing chamber 2 by the wind pressure as shown by the broken line, the communication port 19 is opened, and air is blown into the washing chamber 2. The air injected at this time is pushed downward by the damper 24, so it can efficiently hit the heater 21.
Heated more effectively. When the drying process is completed and the blower 16 is stopped, the damper 24 rotates due to its own weight and closes the communication port 19 again.

In the above explanation, the present invention was applied to a type of dishwasher in which the spray nozzle rotates, but it can also be applied to other types of dishwashers, such as a dishwasher in which the spray nozzle moves back and forth in the horizontal direction. It can also be implemented in a washing machine.

[Effects of the Invention] As is clear from the above description, according to the present invention, a damper is provided at the communication port between the air passage and the washing chamber, the communication port is closed during washing, and the air pressure from the blower is used during drying. Since the blower is automatically opened, water vapor does not adhere to the blower or the filter at the air intake port, thereby preventing the blower from rusting or the filter from deteriorating in function.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing essential parts of an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing an example of a conventional dishwasher. In the figure, 1 is the washing machine body, 2 is the washing cabinet, and 3
is a drainage basin, 7 is a water supply pipe, 11 is a circulation pump, 1
2 is an injection nozzle, 16 is a blower, 17 is an intake port,
18 is a ventilation path, 19 is a communication port, 20 is an exhaust path, 2
1 is a heater, 24 is a damper, 25 is a hinge, 2
6 is stoppa. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. A cleaning chamber having a cleaning water supply system, a circulation system, and a drainage system, and incorporating an injection nozzle and a heater;
In a dishwasher equipped with a blower for introducing outside air, an air passage for blowing the introduced outside air into the washing chamber, an exhaust passage for discharging the outside air in the washing chamber to the outside, the air passage and the washing chamber are A washing machine characterized in that a damper is provided in a communication port through which the air blower opens by wind pressure from the blower during drying.