Method for precisely counting putting quantity of auxiliary cleaning agent

Abstract

Provided is a method for precisely counting the putting quantity of an auxiliary cleaning agent. The method includes the steps of switching on a water feeding valve and switching off a backflushing solenoid valve and an auxiliary cleaning agent control valve to let water flow out from the water feeding valve and enter a pre-storage device through a Venturi tube until the pre-storage device is fullof the water; switching on the backflushing solenoid valve and the auxiliary cleaning agent control valve to let the water enter a cleaning drum through the Venturi tube and the backflushing solenoidvalve; when the auxiliary cleaning agent enters the pre-storage device, sucking the water in the pre-storage device into the Venturi tube through a metering device and conveying the water into the cleaning drum through the backflushing solenoid valve; when the flow rate of the water passing through the metering device reaches an assigned value and a washing machine controller measures a target flow signal, controlling the auxiliary cleaning agent control valve and the backflushing solenoid valve to be switched off through the washing machine controller to let the water flush the auxiliary cleaning agent into the cleaning drum from the water feeding valve through the Venturi tube. By means of the method, the putting quantity of the auxiliary cleaning agent can be precisely controlled, andwaste of the auxiliary cleaning agent and rinsing water is reduced.

Description

technical field [0001] The invention belongs to the field of washing machines, in particular to the field of automatic washing aid feeding devices for washing machines. Background technique [0002] In the prior art, a washing aid box is provided on the washing machine, and the washing aid box has an automatic feeding function. However, most of the washing aids are delivered by pumps, which need to consume electric energy, and how to realize quantitative delivery is a problem to be solved by those skilled in the art. [0003] CN203334042U discloses a washing machine for automatically adding additives, including a water inlet valve, a washing tub and at least one container for holding additives, and a washing water inlet channel between the water inlet valve and the washing tub is provided with a water inlet that can pass through the washing tub. Through the Venturi tube that generates negative pressure, there is a suction port connected to the container that uses negative p...

AI Technical Summary

Problems solved by technology

This application adopts a constant volume cavity, and the volume of the constant volume cavity should be equal to the minimum detergent volume required by the washing machine, and the detergent dose can only be an integral multiple of the volume of the constant volume cavity, and the washing machine control program cannot be set arbitrarily and Choose the amount of detergent, and the constant volume cavity needs to be rinsed every time the detergent is extracted. When the detergent needs to be extracted multiple times, the constant volume cavity needs to be rinsed multiple times. The process is complicated and time-consuming, and at the same time, the water intake time is not enough

[0005] In the prior art, since the water metering device can only accurately detect the flow rate of the passing water, inaccurate measurement will occur when detecting the highly viscous detergent, which will affect the quality of the detergent. deliver

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