Refrigeration device, constant-speed compressor system and startup operation low-power consumption control circuit thereof

Abstract

The invention discloses a refrigeration device, a constant-speed compressor system and a startup operation low-power consumption control circuit thereof. The constant-speed compressor system comprises a main control panel and a PTC resistor arranged on the main control panel. The low-power consumption control circuit comprises a first controllable switch unit, a second controllable switch unit and a control chip arranged on the main control panel, wherein the first controllable switch unit is connected with a constant-speed compressor through a connector; the second controllable switch unit is connected with the constant-speed compressor through the PTC resistor and the connector; and the control chip is used for controlling the second controllable switch unit to be firstly closed while receiving a start command of the constant-speed compressor, controlling the first controllable switch unit to be closed after the second controllable switch unit is closed, so as to connect an alternating current power supply to supply power to the constant-speed compressor, and controlling the second controllable switch unit to be turned off after the constant-speed compressor is started, so as to cut off a power supply circuit of the PTC resistor. According to the constant-speed compressor system, the purposes that the constant-speed compressor is started without the assistance of a starter and the operation power consumption of the constant-speed compressor is reduced are achieved.

Description

Technical field [0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a low-power consumption control circuit for starting operation of a fixed-speed compressor system, a fixed-speed compressor system and a refrigeration equipment. Background technique [0002] With the upgrading of refrigeration equipment such as refrigerator products, electronically controlled refrigerators have gradually become popular, but currently fixed-speed compressors generally still use starters that match mechanical temperature control products. Due to the high price of low-power starters, most The fixed-speed compressor is matched with a normal efficiency starter. In this way, the PTC (Positive Temperature Coefficient) thermistor inside the starter is always energized and the power consumption is generally 2~3W. This part of the power consumption will directly affect the power consumption and energy efficiency level of refrigerator products, and t...

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a low-power consumption control circuit for start-up and operation of a fixed-speed compressor system, which can solve the problem of high power consumption when the fixed-speed compressor does not need the assistance of a starter to achieve start-up and operation, and avoid energy waste

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