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Control system for solving tripping of built-in protector of compressor during refrigeration of air conditioner

A control system, air-conditioning refrigeration technology, applied in the field of control systems, can solve problems such as the air conditioner cannot be used normally, the cooling space outside the air conditioner is small, and frequent trips

Pending Publication Date: 2022-03-08
ZHEJIANG ZHONGGUANG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the increasing housing prices, real estate developers have reduced the area of ​​the air conditioner's external units, resulting in a small cooling space for the air conditioner's external units. Especially for fixed frequency air conditioners, the frequency cannot be adjusted, and high ambient temperature cooling operation, It is easy to cause shutdown caused by the disconnection of the built-in protector of the compressor, especially when the outdoor unit is dirty or blocked or there is a grille at the installation position, it will cause frequent trips. Once the built-in protector of the compressor is disconnected, the shortest time is half an hour. It takes an hour to recover automatically, and the air conditioner cannot be used normally

Method used

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Embodiment Construction

[0011] The present invention will be described in further detail below through specific examples.

[0012] A control system for solving the tripping of a built-in protector of a compressor during air-conditioning refrigeration, comprising the following steps:

[0013] 1) When starting the refrigeration compressor, select the windshield of the indoor unit fan at the beginning of startup according to different outdoor ambient temperatures: when Tao≥48°C, the indoor unit fan does not start; when 48°C>Tao≥43°C , the indoor unit fan starts at low wind speed; when Tao<43°C, the indoor unit fan starts at high wind speed;

[0014] Then run for 3 minutes, and carry out windshield upshift control within 3 minutes: if Td occurs 3 times in a row n -Td n-1 n -Td n-1 ≥0 or the wind speed of the indoor unit is increased to the highest level, the wind speed of the indoor unit will maintain the current wind speed;

[0015] After 3 minutes, control the indoor unit fan to run according to th...

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PUM

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Abstract

The invention discloses a control system for solving the problem of tripping of a built-in protector of a compressor during refrigeration of an air conditioner, and the problem of disconnection of the built-in protector is solved by reducing an exhaust temperature value at a high environment temperature to improve the current which can be borne by the compressor. According to the control method, the problem of tripping of the built-in protector of the compressor during high-environment-temperature refrigeration of the fixed-frequency air conditioner is solved through optimization of control logic, and the actual cost is not increased; the problem that the compressor cannot continue to work for a long time after a built-in protector of the compressor is disconnected during high-temperature refrigeration of a traditional fixed-frequency air conditioner is solved.

Description

technical field [0001] The invention relates to a control system for solving the tripping of a built-in protector of a compressor during air-conditioning refrigeration. Background technique [0002] With the increasing housing prices, real estate developers have reduced the area of ​​the air conditioner's external units, resulting in a small cooling space for the air conditioner's external units. Especially for fixed frequency air conditioners, the frequency cannot be adjusted, and high ambient temperature cooling operation, It is easy to cause shutdown caused by the disconnection of the built-in protector of the compressor, especially when the outdoor unit is dirty or blocked or there is a grille at the installation position, it will cause frequent trips. Once the built-in protector of the compressor is disconnected, the shortest time is half an hour. It takes an hour to recover automatically, and the air conditioner cannot be used normally. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): F24F11/49F24F11/61F24F11/77F24F11/86F25B49/02F24F110/12
CPCF24F11/49F24F11/86F24F11/77F24F11/61F25B49/022F24F2110/12F25B2700/21152F25B2600/02Y02B30/70
Inventor 卢忠华白龙顾家斌陶小飞
Owner ZHEJIANG ZHONGGUANG ELECTRIC CO LTD
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