Protection circuit, method and device for compressor

A compressor protection and circuit protection technology, applied in the field of compressor control, can solve problems such as low reliability
CN106089669AActive Publication Date: 2016-11-09GREE ELECTRIC APPLIANCES INC
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
GREE ELECTRIC APPLIANCES INC
Publication Date
2016-11-09

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Abstract

The invention discloses a protection circuit, method and device for a compressor. The protection circuit comprises a voltage division circuit, a signal processing circuit and a power device, wherein a temperature control switch is arranged in the voltage division circuit which is used for outputting voltage signals according to actions of the temperature control switch, and the temperature control switch acts on the basis of the temperature of a cylinder of the compressor; the signal processing circuit is connected with the voltage division circuit and used for outputting control signals on the basis of comparison results of reference voltage signals, namely the voltage signals output by the voltage division circuit, and comparison voltage signals; and the power device is connected with the signal processing circuit and used for controlling work states of the compressor on the basis of the control signals. By means of the protection circuit, method and device for the compressor, the technical problem of low reliability of an existing compressor overheat protection scheme is solved.
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Description

technical field

[0001] The invention relates to the field of compressor control, in particular to a compressor protection circuit, method and device. Background technique

[0002] Existing compressor overheat protection is realized through a normally closed temperature control switch. Specifically, the temperature of the compressor cylinder is detected through the normally closed temperature control switch. When the temperature of the compressor cylinder reaches the preset value of the normally closed temperature control switch When the action limit is reached, the normally closed temperature control switch changes from the closed state to the open circuit state, and then the change signal corresponding to the state change of the normally closed temperature control switch is transmitted to the Micro Control Unit (MCU), and the MCU detects the change The signal indicates that the compressor is overheated, and the change signal is the overheating signal of the compressor. Afte...

Claims

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