Heating machine and automatic anti-freezing control method thereof

A control method and automatic technology, applied in heating and ventilation control systems, mechanical equipment, heating and ventilation safety systems, etc., can solve problems such as freezing, unit water pump freezing, pipeline freezing cracking, etc., to reduce costs and avoid The effect of water pump freezing

Inactive Publication Date: 2019-03-22
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, in the ultra-low temperature environment of the northern heating machine, the unit can operate at a temperature of minus 35°C. When the user goes out, the unit is shut down, or the unit fails to operate, the unit will stop running, and the water side of the unit will freeze, causing the water pump of the unit to freeze or damage the unit. Pipeline cracking

Method used

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  • Heating machine and automatic anti-freezing control method thereof
  • Heating machine and automatic anti-freezing control method thereof
  • Heating machine and automatic anti-freezing control method thereof

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Embodiment Construction

[0044] see in conjunction figure 1 As shown, according to the embodiment of the present invention, the heating machine includes an air-conditioning side and a waterway side, the air-conditioning side includes a compressor 1, an outdoor heat exchanger 2, a throttling device 3 and an intermediate heat exchanger 4, and the waterway side includes a water pump 5 and a heat exchanger. The heat pipe 6, the heat exchange pipe 6 exchanges heat with the intermediate heat exchanger 4, the water inlet end of the water pump 5 is provided with a water flow switch 7, the inlet end of the heat exchange pipe 6 is provided with an inlet water temperature sensor 8, and the heat exchange The outlet end of the pipeline 6 is provided with a water outlet temperature sensor 9, an antifreeze temperature sensor 10 is provided at the waterway side, an ambient temperature sensor 11 is provided at the air conditioner side, a high pressure sensor 12 is provided at the discharge end of the compressor 1, and ...

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Abstract

The invention provides a heating machine and an automatic anti-freezing control method thereof. The automatic anti-freezing control method of the heating machine comprises the steps that an outdoor environment temperature Thj, a water outlet temperature Tch, a water inlet temperature Tjs and an anti-freezing temperature Tfd are detected in real time; when a compressor (1) does not operated, the relation between Thj and T1 is detected; if Thj is less than T1, the relation between Tch, Tjs, Tfd and T2 is detected; and when Tch is less than T2 or Tjs is less than T2 or Tfd is less than T2, the heating machine is controlled to enter an automatic anti-freezing control mode. According to the automatic anti-freezing control method of the heating machine, the problem of unit water pump frost damaging or pipeline frost cracking can be effectively avoided, and effective protection is formed on the heating machine.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a heating machine and an automatic antifreeze control method thereof. Background technique [0002] At present, in the ultra-low temperature environment of the northern heating machine, the unit can operate at a temperature of minus 35°C. When the user goes out, the unit is shut down, or the unit fails to operate, the unit will stop running, and the water side of the unit will freeze, causing the water pump of the unit to freeze or damage the unit. The situation of pipeline freezing and cracking. Contents of the invention [0003] Therefore, the technical problem to be solved by the present invention is to provide a heating machine and its automatic antifreeze control method, which can effectively prevent the water pump of the unit from freezing or cracking of the pipeline, and form effective protection for the heating machine. [0004] In order to solve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/64F24F110/12F24F140/20
CPCF24F11/42F24F11/64F24F2110/12F24F2140/20
Inventor 解启伟宋爱程海松陈辉
Owner GREE ELECTRIC APPLIANCES INC
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