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A compressor high pressure protection system and method

A technology for high-voltage protection and compressors, which is applied to mechanical equipment, machines/engines, liquid variable capacity machinery, etc., can solve problems such as frequent start and stop, and achieve the effects of suppressing frequent start and stop, alleviating frequent start and stop, and prolonging the time interval Effect

Active Publication Date: 2018-05-01
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a compressor high-voltage protection system and high-voltage protection method, to suppress the frequent start-stop problem of the compressor during high-pressure protection, and then improve the service life of the compressor

Method used

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  • A compressor high pressure protection system and method
  • A compressor high pressure protection system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] see figure 1 , the power module includes a power supply 1 and a control circuit board 6, the delay protection switch includes a high-voltage switch 3 and a delay circuit board 8, the power supply 1 has a neutral output terminal and a live wire output terminal, the control The circuit board 6 has a voltage signal output terminal for outputting a voltage signal that is not zero. The high-voltage switch 3 can be a high-voltage switch 3 used for compressor high-voltage protection in the prior art. The high-voltage switch 3 has a gas pressure sensor Terminal and contact switch; Described time-delay circuit board 8 has input end and output end, during concrete implementation, described time-delay circuit board 8 can adopt micro-control chip, and this micro-control chip can for example be made up of single-chip microcomputer and its peripheral circuit , the output end of the delay circuit board 8 is a controlled switch, and the controlled switch can be turned off immediately w...

Embodiment 2

[0047] see figure 2 , the power module includes a power supply 1, a control circuit board 6 and a transformer 2, the delay protection switch includes a high-voltage switch 3 and a delay relay 5, the power supply 1 has a neutral output terminal and a live wire output terminal, so The control circuit board 6 has a voltage signal output terminal, and the voltage signal output terminal is used to output a voltage signal whose voltage value is not equal to the output voltage of the transformer 2, and the transformer 2 includes two input terminals and two output terminals, so The high-pressure switch 3 can adopt the high-pressure switch 3 used for compressor high-pressure protection in the prior art, and the high-pressure switch 3 has a gas pressure sensing end and a contact switch; the time-delay relay 5 has a coil and a normally open time-delay closing switch, the normally open time-delayed closing switch can be closed after a delay of a set time T when the coil is energized, and...

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Abstract

The invention relates to the field of high-voltage protection of compressors and discloses a high-voltage protection system and method for a compressor. The system comprises a contactor, a power module and a delay protection switch; a power input terminal of the contactor is connected with the power module; a power output terminal of the contactor is connected with the compressor; one end of a control coil of the contactor is connected with one output end of the power module; and the other end of the control coil of the contactor is connected with the other output end of the power module through the delay protection switch. With the technical scheme, the problem of frequent starting and stopping during high-voltage protection of the compressor can be effectively solved, and then the service life of the compressor is prolonged.

Description

technical field [0001] The invention relates to the technical field of compressor protection, in particular to a compressor high-pressure protection system and a compressor high-voltage protection method. Background technique [0002] In order to obtain the North American ETL safety certification, the refrigeration system in the air conditioner should meet the pressure test requirements stipulated in the North American safety standard UL1995-2011. For common air conditioner refrigeration system components such as heat exchangers, in order to meet the above pressure test requirements, the maximum abnormal working pressure of the system should be less than 4.7Mpa. [0003] In order to detect the maximum abnormal working pressure of the system to determine whether the heat exchanger meets the requirements of the pressure test, it is necessary to carry out the detection test of the maximum abnormal working pressure of the system. During the test, it is required to shield the ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/10
CPCF04B49/10
Inventor 靳晓钒刘树清
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD