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Drainage detection method for dish washing machine and dish washing machine

A detection method and dishwasher technology, applied in the direction of tableware washing machine/rinsing machine, tableware washing machine/rinsing and rinsing machine parts, cleaning equipment, etc., can solve the problem of compressing the washing capacity of the dishwasher, increasing water consumption and energy consumption Consumption, reduce inner tank space and other issues, achieve the effect of simple structure, prevent misjudgment, and improve judgment accuracy

Inactive Publication Date: 2018-06-29
QINGDAO HAIER DISHWASHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the first way, because the installation of the pressure detection device needs to be connected, an air cavity needs to be set in the inner tank of the dishwasher, and a pressure switch or pressure sensor needs to be added, and the computer board also needs to be equipped with a related detection interface, resulting in this The cost of this method is high, and the inner tank needs to be opened separately, which increases the hidden danger of water leakage
[0007] In the second method, since a float switch needs to be installed inside the dishwasher, the dishwasher has increased the detection device and corresponding components, and the inner tank of the dishwasher needs to increase the space for placing components such as the float device at the water tank and other components. Increase water consumption and energy consumption, and reduce the space in the inner tank, compressing the washing capacity of the dishwasher

Method used

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  • Drainage detection method for dish washing machine and dish washing machine
  • Drainage detection method for dish washing machine and dish washing machine
  • Drainage detection method for dish washing machine and dish washing machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 2 As shown, in this embodiment, when the time for the dishwasher to execute the drainage program reaches the set cut-off time node, the washing pump for circulating the washing water in the dishwasher is turned on for a certain period of time t, and when the washing pump is empty, it is judged that the dishwashing The machine is drained.

[0044] In this embodiment, when the washing pump is not unloaded, it is judged whether the non-idling times of the washing pump have accumulated to the set value n, if not, continue to perform drainage; if it is, it is determined that the dishwasher has a drainage failure, and the dishwasher stops work; preferably, the n is a positive integer greater than or equal to 1.

[0045] By judging whether the dishwasher has been drained at least once to determine whether the dishwasher has a drainage failure, to prevent the overflow of the water in the dishwasher, causing the floor outside the dishwasher to be soaked by washi...

Embodiment 2

[0056] Such as image 3 As shown, in this embodiment, in the late stage of the dishwasher executing the draining program, the washing pump is turned on for a certain time t at intervals of T; when the washing pump is empty, the draining program is ended; otherwise, the draining program is continued until washing When the number of times the pump is turned on in non-empty operation reaches the set value n, it is judged that the dishwasher has a drainage failure, and the dishwasher stops working; preferably, the t is less than T; further preferably, the t is 1 to 2 seconds.

[0057] In this embodiment, the specific steps of the dishwasher for judging the drainage fault are as follows:

[0058] Step 11, the dishwasher starts to execute the drainage program;

[0059] Step 12. Execute the drainage program, turn on the drainage pump for a certain time T, and turn on the washing pump to run for a certain time t;

[0060] Step 13. Determine whether the washing pump is running withou...

Embodiment 3

[0067] In this embodiment, the judgment method of whether the washing pump is no-load running is as follows. After the washing pump starts to work, the working current of the washing pump is detected; and the detected value is compared with the no-load current value of the washing pump. When the pump no-load current value, the washing pump is no-load operation; when the detection value is greater than the no-load current value of the washing pump, the washing pump is not no-load operation. In this embodiment, the washing pump is equipped with, or is connected to, a detection unit for detecting the working current of the washing pump, so that the working load of the washing pump can be monitored in real time.

[0068] Since the voltage value of the power supply of the dishwasher is a constant value, it is only necessary to detect the operating current of the washing pump and compare the detected value with the set value to obtain an accurate working load of the washing pump, and...

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Abstract

The invention relates to a drainage detection method for a dish washing machine. When the dish washing machine executes a drainage program, a washing pump for circulation flow of washing water in thedish washing machine is started up, and when the washing pump is in a no-load state, it is judged that drainage of the dish washing machine is completed. By detecting and judging the working load of the washing pump of the dish washing machine, whether or not drainage of the dish washing machine is completed can be precisely judged, and then the aim of accurately judging whether or not the dish washing machine has a drainage fault is achieved. The invention further relates to the dish washing machine. When the dish washing machine executes the drainage program, drainage detection is conductedon the dish washing machine by adopting the detection method. Meanwhile, the method is easy, simple in structure, remarkable in effect and suitable for popularization and application.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a washing machine drainage detection method, and also to a dishwasher applying the detection method. Background technique [0002] Dishwashers have become increasingly popular and used by consumers. If the drain pump fails or the drain pipe is blocked during the draining process of the dishwasher, if it cannot be detected and judged in time, the washing water in the dishwasher will overflow out of the dishwasher, causing the floor of the user's home to be soaked. The existing detection methods for dishwasher drainage faults are generally as follows: [0003] The first is to install a pressure detection device in the dishwasher to detect the water pressure in the sink of the dishwasher to obtain the water level of the washing water in the dishwasher. By detecting the change of the water level of the washing water, it is judged that the sink after the dishwasher performs the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47L15/00A47L15/42
Inventor 王华伟
Owner QINGDAO HAIER DISHWASHER
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