Water level detection control method for clothing washing equipment and clothing washing equipment

Abstract

The invention relates to the technical field of clothing washing, in particular to a water level detection control method of clothing washing equipment and the clothing washing equipment. In order tosolve the problem that the existing clothing washing equipment cannot accurately detect the water level in a washing bucket, the clothing washing equipment in the invention comprises a washing bucket,a water level detecting member and an ultrasonic device. The control method comprises the following steps that under the condition that the clothing washing equipment is in a water injection mode, ultrasonic signals emitted to the water surface in the water level detecting member by the ultrasonic device are obtained and the propagation time of the ultrasonic signals reflected back by the water surface in the water level detecting member are received; the temperature in the water level detecting member is acquired; the propagation speed of ultrasonic waves in the water level detecting memberis corrected according to the temperature; and the water level in the washing bucket is judged according to the corrected propagation speed and the propagation time. According to the method and the equipment in the invention, the propagation speed of the ultrasonic waves in the water level detecting member is corrected according to specific working conditions, so as to accurately judge the water level in the washing bucket.

Description

technical field [0001] The invention relates to the technical field of laundry washing, and specifically provides a water level detection and control method for laundry washing equipment and the laundry washing equipment. Background technique [0002] With the advancement of science and technology, the automation level of human life is getting higher and higher, and daily housework is gradually replaced by machines from manpower. As a household appliance commonly used in daily life, laundry washing equipment has brought great convenience to people's lives. Clothes washing equipment is classified according to the washing method and can be roughly divided into top-wheel washing machines and drum washing machines. In the prior art, the washing machine uses a capacitive liquid level sensor to detect the water level in the washing tub. The detection principle of the capacitive liquid level sensor is to detect the water pressure in the washing tub, and the water pressure pushes t...

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Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the existing laundry washing equipment cannot accurately detect the water level in the washing tub, the present invention provides a water level detection and control method for the laundry washing equipment, the laundry washing equipment It includes a washing tub and a water level detection component communicated with the washing tub, and the laundry washing equipment also includes an ultrasonic device disposed in the water level detection component; the water level detection control method includes the following steps: when the laundry washing equipment is in the water filling mode, obtain the ultrasonic device Transmitting an ultrasonic signal to the water surface in the water level detection component and receiving the propagation time of the ultrasonic signal reflected by the water surface in the water level detection component; obtaining the temperature in the water level detection component; correcting the propagation speed of the ultrasonic wave in the water level detection component according to the temperature; Judging the water level in the wash tub based on the corrected propagation velocity and propagation time

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