Refrigerating device, constant-speed compressor system and starting running low-power-consumption control circuit of constant-speed compressor system

Abstract

The invention discloses a refrigerating device, a constant-speed compressor system and a starting running low-power-consumption control circuit of the constant-speed compressor system. The constant-speed compressor system comprises a starter and a main control panel. The starting running low-power-consumption control circuit comprises a first controllable switch unit arranged on the main control panel, a second controllable switch unit arranged on the main control panel, and a control chip arranged on the main control panel, wherein the first controllable switch unit is connected with a constant-speed compressor through the starter; the second controllable switch unit is connected with the constant-speed compressor through the starter; the control chip is used for controlling the second controllable switch unit to be closed at first when receiving a starting instruction of the constant-speed compressor, controlling the first controllable switch unit to be closed to connect an alternating current power source to supply power to the constant-speed compressor after the second controllable switch unit is closed, and controlling the second controllable switch unit to be opened to cut off a power supply loop of a PTC resistor in the starter after the constant-speed compressor is started, and the purpose of zero power consumption of the starter is achieved when the constant-speed compressor runs.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a low power consumption control circuit for start-up operation of a fixed-speed compressor system, a fixed-speed compressor system and a refrigeration equipment. Background technique [0002] With the implementation of the new mandatory energy efficiency national standard "Restricted Values ​​of Power Consumption and Energy Efficiency Levels of Household Refrigerators", higher requirements are put forward for energy-saving technologies of refrigeration equipment such as refrigerators. [0003] At present, the fixed-speed compressors in most refrigeration equipment are matched with ordinary efficiency starters. When the fixed-speed compressors are running, the PTC (Positive Temperature Coefficient) thermistor inside the starter is always in a energized state. , The power consumption is generally 2-3W, and this part of the power consumption will directly affect the ...

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 operation of a fixed-speed compressor system, which can solve the problem caused by the power consumption of the starter itself on the power consumption of refrigeration equipment, and avoid energy waste

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