JPS6310143Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to dishwashers, and particularly relates to improvements in the drying air blowing mechanism thereof.

(B) Prior Art In a dishwasher, the steps of washing, rinsing, and drying are performed in sequence. Drying is generally carried out using an air blower, but the use of an air blower increases costs, and there is also the problem that the installation space for the air blower occupies the installation space for other components.

(C) Purpose This invention was created in view of the above points, and aims to provide a low-cost and compact dishwasher that does not require a blower for blowing drying air and can blow drying air. It is.

(d) Configuration This invention is configured so that the cooling air from the drive motor of the circulation pump for cleaning water and rinsing water is used for blowing air for drying. The cleaning water and rinsing water in the washing tank are circulated and supplied to the nozzle by the operation of the circulation pump, and the nozzle rotates and sprays the washing water and rinsing water to wash the dishes. In the dishwasher you use,
The drive motor of the circulation pump is integrally equipped with a cooling fan for the drive motor, and the exhaust pipe from the drive motor is connected to the bottom of the cleaning tank. This dishwasher is equipped with an exhaust port with an opening/closing body that swings open.

(e) Examples Examples of this invention will be described below in detail with reference to the drawings, but this invention is not limited to the following examples.

FIG. 1 shows the overall configuration of a dishwasher 1. As shown in FIG.

2 is a base, a cleaning tank 3 is mounted on the base 2,
A cover 4 is mounted on the cleaning tank 3 so as to be openable and closable. A nozzle 5 is rotatably provided at the bottom of the washing tank 3, and the dishes in the dish basket 6 are washed and rinsed with washing water and rinsing water from the nozzle 5. Reference numeral 7 denotes a circulation pump, which pumps cleaning water and rinsing water stored in the cleaning tank 3 by forward rotation to the nozzle 5.
Circulating supply to. Further, the circulation pump 7 drains the inside of the cleaning tank 3 by rotating in the reverse direction, and brings the cleaning water and the rinsing water to the drainage section 8. (The drainage pipe is not shown.) That is, the circulation pump 7 is a reversible pump and also serves as a drainage pump.

Furthermore, the structure of the circulation pump 7 will be explained with reference to FIGS. 2 and 3.

This circulation pump 7 functions by rotating an impeller 10 by a drive motor 9, and a shaft 11 of the drive motor 9.
A cooling fan 12 for the drive motor 9 is integrally provided.

The circulation supply operation and drainage operation of the circulation pump 7 will be briefly explained. Now, when the impeller 10 rotates in the direction of the solid line (forward rotation), the cleaning water and rinsing water stored in the cleaning tank 3 flow from the drain port 13 into the circulation pump 7 and further to the nozzle 5 as shown by the solid line arrow. . Impeller 10 rotates in the direction of the dotted line (reverse rotation)
Then, the washing water and the rinsing water flow from the lower part of the nozzle 5 into the circulation pump 7 and further to the drainage channel 14 as shown by the dotted arrow. Check valves 15 and 1 are provided at the drain port 13, the lower part of the nozzle 5, and the drain channel 14, respectively.
6 and 17 are provided.

Casing 1 of cooling fan 12 of drive motor 9
An exhaust pipe 19 extends from the exhaust pipe 8 to guide exhaust gas when the circulation pump 7 rotates in forward and reverse directions. The end of the exhaust pipe 19 is connected to the bottom of the cleaning tank 3, and an exhaust case 20 is provided in the middle thereof. This exhaust case 20 has an exhaust port 21, and this exhaust port 21
An opening/closing body 22 is attached to the. This opening/closing body 22 is attached via a spring, and has a structure in which it is normally kept closed and opens when a certain force or more is applied.

When the circulation pump 7 rotates forward with cleaning water or rinsing water currently stored in the cleaning tank 3, the end of the exhaust pipe 19 that opens at the bottom of the cleaning tank 3 is blocked by the cleaning water or rinsing water. Therefore, the exhaust pressure is applied to the opening/closing body 22 of the exhaust case 20, and the opening/closing body 22 is opened as shown in FIG.
From 3 to the outside.

During drainage, when the amount of drainage is small and the water level line in the cleaning tank 3 is located above the opening at the end of the exhaust pipe 19, exhaust is carried out in the same way as during cleaning and rinsing, but the drainage is quite large. When this is done, the opening at the end of the pipe 19 of the cleaning tank 3 is opened, and thereafter the exhaust gas flows into the cleaning tank 3. In this state, almost no exhaust pressure is applied to the opening/closing body 22, so the exhaust port 21 is closed. To dry dishes, the circulation pump 7 is operated to send exhaust air into the washing tank 3 even after the washing water and rinsing water in the washing tank 3 are completely drained. At this time, if the heater 24 for increasing the temperature of the cleaning water and rinsing water located at the bottom 2 of the cleaning tank 3 is turned on, the exhaust gas becomes hot air, increasing the drying effect. The cover 4 is provided with an exhaust port 25 through which moisture containing moisture is exhausted.

In the above embodiment, a reversible pump that also serves as a drainage pump is used as the circulation pump, but it is of course possible to use the circulation pump and the drainage pump separately.

(F) Effect This device is constructed as described above, and the dishes are dried by the air blowing from the cooling fan of the circulation pump. According to this device, there is no need for a blower as in the past. It is possible to provide a dishwasher with low cost and easy-to-fit parts. In particular, an exhaust port with an opening/closing body that opens when the exhaust pressure is applied is provided in the middle of the exhaust pipe, so even if the end of the exhaust pipe is blocked by washing water or rinsing water, the exhaust can be smoothly exhausted and the drive The motor is cooled without any problems.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the dishwasher of this invention, and FIGS. 2 and 3 are vertical cross-sectional views of the circulation pump section in the orthogonal direction. 1... Dishwasher, 3... Washing tank, 5... Nozzle, 7... Circulation pump, 9... Drive motor, 12
...Cooling fan, 19...Exhaust pipe, 21...
Exhaust port, 22...opening/closing body.

Claims (1)

[Scope of utility model registration request] A nozzle that spouts cleaning water and rinsing water is installed in the cleaning tank, and when the circulation pump operates, the cleaning water and rinsing water in the cleaning tank are circulated and supplied to the nozzle, and the nozzle rotates and sprays the cleaning water and rinsing water. In a dishwasher that washes dishes, the drive motor of the circulation pump is integrally equipped with a cooling fan for the drive motor, and the exhaust pipe from the drive motor is connected to the bottom of the washing tank. The dishwasher is equipped with an exhaust port equipped with an opening/closing body that opens by the pressure of exhaust from the drive motor.