Washing machine and method for back-flushing pre-filter of washing machine

A pre-filter and back-flushing technology, applied in the field of washing machines, can solve the problems of filtration effect, pollution, filter membrane blockage, etc., and achieve the effect of prolonging life, reducing cost and prolonging service life.

Active Publication Date: 2016-02-24
QINGDAO HAIER SMART TECH R & D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase in washing times of the washing machine, separated substances and some other impurities will gradually accumulate

Method used

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  • Washing machine and method for back-flushing pre-filter of washing machine
  • Washing machine and method for back-flushing pre-filter of washing machine
  • Washing machine and method for back-flushing pre-filter of washing machine

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Embodiment Construction

[0041] figure 1 is a schematic schematic diagram of a washing machine according to an embodiment of the present invention. The washing machine in this embodiment may include a casing (not shown in the figure), a washing tub 12 disposed in the casing, and a circulating water filtering system. The circulating water filtration system of the present invention may include a pre-filter 24 and a filter membrane module 26 arranged on the pipeline downstream of the pre-filter 24 . The pre-filter 24 and the filter membrane assembly 26 can be configured to filter the water discharged from the washing tub 12 during the circulating water filtration process, so as to circulate back to the washing tub 12 for reuse. Wherein the pre-filter 24 is used as an upstream filter to first filter the water from the washing cylinder 12, and the filter membrane assembly 26 is used as a downstream filter to filter the water filtered by the pre-filter 24 again (those skilled in the art can understand that...

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Abstract

The invention provides a washing machine and a method for back-flushing a pre-filter of the washing machine. The washing machine comprises a circulating water filtering system, the circulating water filtering system comprises the pre-filter and a filtering film assembly arranged on a downstream pipeline of the pre-filter, the pre-filter and the filtering film assembly are configured in a way that during the circulating water filtering flow of the washing machine, and water discharged from a washing cylinder of the washing machine is filtered and then is recycled back to the washing cylinder. The filtering film assembly is further configured in a way that after the circulating water filtering flow and/or the filtering film assembly flushing flow, and residual water in the filtering film assembly is reversely discharged to the pre-filter in a controllable manner in order to carry out back-flushing to the pre-filter. According to the invention, after the circulating water filtering flow, residual water in the filtering film assembly carries out back-flushing to the pre-filter, the water source is reasonably utilized, and a filter screen in the pre-filter can be cleaned to a certain extent.

Description

technical field [0001] The invention relates to a washing machine, in particular to a washing machine with a circulating water filtering system and a method for backwashing a pre-filter in the circulating water filtering system. Background technique [0002] A laundry routine of conventional washing machines usually includes water intake, washing-spin-drying-drainage, multiple rinsing-spin-drying-drainage, etc., wherein washing and each rinse need to consume a large amount of clean water. The water used for washing or rinsing is discharged to the environment outside the washing machine through the drain pipe. The whole washing process consumes a lot of water, which greatly wastes water resources. [0003] In order to achieve the purpose of saving water, the washing water and / or rinsing water of the washing machine can be filtered by the filter membrane module for recycling. However, as the washing times of the washing machine increase, separated substances and some other i...

Claims

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Application Information

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IPC IPC(8): D06F39/10D06F39/08
Inventor 郝世龙李以民张静静王春旭劳春峰
Owner QINGDAO HAIER SMART TECH R & D CO LTD
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