Refrigerating appliance fixed-frequency compressor control system and method

Abstract

The invention relates to the field of compressors, in particular to a refrigerating appliance fixed-frequency compressor control system and method, which can intelligently control the starting operation process of a compressor according to control conditions and time sequences corresponding to related parameters in the actual operation process of the compressor, so that the energy efficiency of the compressor is greatly improved. The refrigerating appliance fixed-frequency compressor control system comprises a temperature acquisition module, a current acquisition module, a voltage acquisitionmodule, an electronic switch and a control module, and the temperature acquisition module, the current acquisition module, the voltage acquisition module and the electronic switch are connected with the control module. The control module is used for intelligently controlling the electronic switch according to temperature information, current information and voltage information acquired by the temperature acquisition module, the current acquisition module and the voltage acquisition module in the starting operation process of the compressor so as to control the starting or stopping of the compressor. The system and the method are suitable for controlling the fixed-frequency compressor of the refrigerator.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a control system and method for a fixed-frequency compressor of a refrigeration appliance. Background technique [0002] The fixed-frequency compressor (hereinafter referred to as the compressor) must use a starter to operate. At the same time, in order to protect the compressor, an overheating and overload protector must be used to protect the compressor from excessive current and high shell temperature, so as to ensure that the compressor will not burn. At present, PTC starters, current starters, and voltage starters are generally used to start the compressor. After the compressor starts, the starting winding of the motor is separated, and the compressor enters the normal operation mode. [0003] The traditional compressor starting control system includes PTC starting system and current type (weight hammer) starting system. [0004] Such as figure 2 As shown, it is the wiring sche...

AI Technical Summary

Problems solved by technology

[0006] At present, during the start-up operation of the compressor, the existing technology cannot intelligently control the start-up process according to various parameters of different compressors in the actual start-up operation process, and there is a certain degree of starter and protector parameters that do not match the compressor. The situation, coupled with the discreteness of the starter and protector, will cause the technical problem of the endless cycle of compressor failure to start; and the energy efficiency of the compressor is ordinary. Once the compressor has an after-sales maintenance problem, it will often take a lot of time, energy and cost

Images