Household water purifier capable of automatically cleaning filter membrane and method

Abstract

The invention discloses a household water purifier capable of automatically cleaning a filter membrane. The household water purifier comprises a water inlet valve, an ultrafiltration membrane, a first TDS sensor, a high-pressure pump, a reverse osmosis membrane, a proportional valve, rear active carbon, a second TDS sensor, a pressure storage tank, an ultrafiltration membrane rear valve, a reverse osmosis membrane rear valve, a tank front check valve, a water outlet valve, a pilot valve, a flush valve, a first wastewater valve, a second wastewater valve, a third wastewater valve, a detection component for detecting the trans-membrane pressure difference of the ultrafiltration membrane, and a control device for controlling the work of the household water purifier. The control device is used for controlling the household water purifier to be in a cleaning mode or a water making mode according to the ratio of the trans-membrane pressure difference to a pressure difference threshold value. When the trans-membrane pressure difference is greater than the pressure difference threshold value, the control device enables the household water purifier to automatically clean the filter membrane. The household water purifier disclosed by the invention can prolong the service life of the filter membrane, so that the use cost of the household water purifier is reduced.

Description

technical field [0001] The present invention generally relates to a household water purifier, and in particular relates to a household water purifier capable of automatically cleaning a filter membrane and exempting filter core replacement and a method thereof. Background technique [0002] With the advent of the economic era, healthy drinking water makes people pay more and more attention to the purification of water. However, due to regional differences or environmental influences, the purity of water and the quality of water are different. The water filter filters the water with high purity, which removes the harmful substances in the water, and at the same time filters out the minerals in the water. Many minerals in the water are needed by the human body, which is not good for the health of the human body, but it is not Filtration absorbs harmful substances again, which causes a lot of inconvenience. [0003] The structural form of existing household water purifier has ...

AI Technical Summary

Problems solved by technology

The use of reverse osmosis membrane will not only remove impurities, but also filter out minerals that are beneficial to the body at the same time, resulting in a lack of minerals in the produced water

Therefore, the household water purifiers of the prior art are either inconvenient to use, have poor removal effect on small particle impurities in water, or cause water to lack beneficial minerals

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