Fluorine deficiency detection and protection method and system during operation of frequency conversion air conditioning system

A frequency conversion air conditioner, operating technology, applied in space heating and ventilation, heating and ventilation control system, heating and ventilation safety system, etc., can solve problems such as increased compressor wear, compressor burnout, and reduced cooling effect

Active Publication Date: 2017-12-08
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Inverter air conditioning systems generally have a rated amount of refrigerant injection. The system can work normally within a certain range of injection amount. If the amount of refrigerant in the system is too small, the cooling effect will be seriously reduced and the wear of the compressor will be aggravated. It may even cause the compressor to burn out.

Method used

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  • Fluorine deficiency detection and protection method and system during operation of frequency conversion air conditioning system
  • Fluorine deficiency detection and protection method and system during operation of frequency conversion air conditioning system
  • Fluorine deficiency detection and protection method and system during operation of frequency conversion air conditioning system

Examples

Experimental program
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Effect test

Embodiment 1

[0043] figure 1 It is a flowchart of a fluorine deficiency detection and protection method during operation of an inverter air conditioner system provided by an embodiment of the present application.

[0044] The frequency conversion air conditioning system provided in this embodiment includes a compressor, a condenser, a condensing fan, an electronic expansion valve, an evaporator, and an external fan, and also includes components such as a gas-liquid separator, an oil separator, and a liquid storage device. The components are connected in sequence through pipelines to form a refrigerant circulation system. At the inlet of the evaporator and the outlet of the evaporator, the indoor unit and the outdoor unit are equipped with temperature-sensing bulbs, which are used to monitor the inlet temperature of the evaporator, the outlet temperature of the evaporator, the indoor temperature and The outdoor ambient temperature is detected, and a pressure sensor is arranged on the high-p...

Embodiment 2

[0064] figure 2 It is a flow chart of a fluorine deficiency detection and protection method during operation of an inverter air conditioner system provided by another embodiment of the present application.

[0065] like figure 2 As shown, the fluorine deficiency detection and protection method provided in this embodiment includes the following steps:

[0066] S201: Detect the running state.

[0067] Detect the electronic expansion valve opening of the electronic expansion valve, the evaporator inlet temperature and evaporator outlet temperature of the evaporator, the outdoor unit pressure and the indoor temperature of the outdoor unit, and if all the following conditions are met, the fluorine deficiency pre-judgment will be carried out , otherwise keep the inverter air conditioning system running normally and do not do other operations.

[0068] 1) The opening degree of the electronic expansion valve is greater than or equal to the second preset opening degree within the ...

Embodiment 3

[0087] image 3 It is a flow chart of a fluorine deficiency detection and protection method during operation of an inverter air conditioner system provided by another embodiment of the present application.

[0088] like image 3 As shown, the fluorine deficiency detection and protection method provided in this embodiment includes the following steps:

[0089] S301: Detect the running state.

[0090] Detect the electronic expansion valve opening of the electronic expansion valve, the evaporator inlet temperature and evaporator outlet temperature of the evaporator, the outdoor unit pressure and the indoor temperature of the outdoor unit, and if all the following conditions are met, the fluorine deficiency pre-judgment will be carried out , otherwise keep the inverter air conditioning system running normally and do not do other operations.

[0091] 1) The opening degree of the electronic expansion valve is greater than or equal to the second preset opening degree within the fi...

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PUM

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Abstract

This application provides a fluorine deficiency detection and protection method and system during the operation of the inverter air conditioner system. The fluorine deficiency detection and protection method and system respectively monitor the inlet temperature of the evaporator, the outlet temperature of the evaporator, and the Indoor temperature, outdoor ambient temperature and outdoor condensing pressure are tested, and according to the test results, the determination of fluorine deficiency is carried out step by step. When the compressor is judged to be in a state of fluorine deficiency, the operation of the compressor and the external fan is stopped in time, so that the inverter air conditioner system is in operation. It can detect whether there is fluorine deficiency in time, and protect the compressor in time when the fluorine deficiency occurs, so as to prevent the compressor from running in the fluorine deficiency state.

Description

technical field [0001] The present application relates to the technical field of refrigeration, and more specifically, to a method and system for detecting and protecting fluorine deficiency during the operation of an inverter air conditioner system. Background technique [0002] Inverter air conditioning systems generally have a rated amount of refrigerant injection. The system can work normally within a certain range of injection amount. If the amount of refrigerant in the system is too small, the cooling effect will be seriously reduced and the wear of the compressor will be aggravated. It may even cause the compressor to burn out. Contents of the invention [0003] In view of this, the present application provides a fluorine-deficiency detection and protection method and system during the operation of an inverter air-conditioning system, which are used to prevent the inverter air-conditioning system from running in a state of fluorine deficiency. [0004] In order to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/00F25B49/02F25B41/06F25B41/34
CPCF24F11/30F24F11/70F24F2110/00F25B49/022F24F11/84F24F2140/12F25B41/31Y02B30/70
Inventor 林海佳刘丽君赵鹏湛碧海
Owner GREE ELECTRIC APPLIANCES INC
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