Washing machine, releasing pump thereof and control method of washing machine

Abstract

The invention discloses a washing machine, a releasing pump thereof and a control method of the washing machine. The washing machine comprises a washing material box, a driver and a driven assembly. The driven assembly is connected with the driver. The releasing pump comprises a volume-variable elastic releasing body, in which a liquid inlet and a liquid outlet are formed. A first end of the elastic releasing body is connected with the driven assembly. The volume of the elastic releasing body becomes smaller in such a manner that the driver drives a first end of the elastic releasing body to move away from a second end of the elastic releasing body by means of the driven assembly so that detergent liquid is absorbed from the washing material box via the liquid inlet. The volume of the elastic releasing body becomes larger in such a manner that the driver drives first end of the elastic releasing body to move close to the second end of the elastic releasing body by means of the driven assembly such that detergent liquid in the elastic releasing body is discharged from the liquid outlet. The releasing pump has following advantages: detergent liquid is automatically released; precise releasing amount and long service lifetime are obtained; and a pipeline of the releasing pump is not easily blocked.

Description

technical field [0001] The invention relates to the field of household appliances, in particular to a washing machine, a feeding pump, and a control method for the washing machine. Background technique [0002] It is pointed out in the related art that traditional washing machines often use the following four kinds of liquid feeding pumps: first, the peristaltic pump, whose principle is to squeeze out the liquid by squeezing the rubber tube. However, the amount of liquid feeding is greatly affected by the temperature, and The rubber tube is easy to wear and has a short life; second, the electromagnetic pump, its principle is to pump and release liquid through electromagnetic high-frequency oscillation, its disadvantage is that the electromagnetic oscillation noise is large, it is easy to block, and the accuracy of liquid delivery cannot be guaranteed; third, The principle of the gear pump is to squeeze the liquid through the mutual meshing of the gears. The disadvantage is t...

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Problems solved by technology

[0002] It is pointed out in the related art that traditional washing machines often use the following four kinds of liquid feeding pumps: first, the peristaltic pump, whose principle is to squeeze out the liquid by squeezing the rubber tube. However, the amount of liquid feeding is greatly affected by the temperature, and The rubber tube is easy to wear and has a short life; second, the electromagnetic pump, its principle is to pump and release liquid through electromagnetic high-frequency oscillation, its disadvantage is that the electromagnetic oscillation noise is large, it is easy to block, and the accuracy of liquid delivery cannot be guaranteed; third, The principle of the gear pump is to squeeze the liquid through the mutual meshing of the gears. The disadvantage is that the pipeline must be filled with liquid in the initial state, the gears are easy to get stuck, and the accuracy of the liquid dosage cannot be guaranteed; fourth, the piston pump , the principle is to extract and release the liquid through the movement of the piston. Although the amount of liquid is relatively accurate, the life of the piston is short due to friction

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