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Control method of air conditioning system

An air-conditioning system and control method technology, applied in the direction of control input related to air characteristics, space heating and ventilation control input, heating and ventilation control system, etc., can solve the problem of large start-stop torque and long time required for start-stop , Shorten the life of the compressor and other issues, to achieve the effect of fast and stable adjustment

Active Publication Date: 2020-01-07
HANGZHOU SANHUA RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large mechanical inertia of the compressor, the torque for starting and stopping is relatively large, and the time required for starting and stopping is also long, so the frequent start and stop of the compressor will affect the system performance and shorten the life of the compressor.
However, the damage of the physical pressure relief function to the air conditioning system is more obvious. Once the physical pressure relief function is activated, the entire air conditioning system may need to be repaired later.

Method used

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  • Control method of air conditioning system
  • Control method of air conditioning system
  • Control method of air conditioning system

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Embodiment Construction

[0020] see figure 1 , this embodiment provides a method for controlling an air-conditioning system, which can be applied in the air-conditioning system 100 and can be used to adjust the cooling pressure of the refrigerant in the air-conditioning system 100 . The air conditioning system 100 can use CO 2 As a refrigerant for vehicle air conditioning systems. The air conditioning system 100 includes a compressor 1 , an air cooler 2 , an electronic expansion valve (Electronic Expansion Valve, EXV) 3 , an evaporator 4 , a liquid accumulator 5 , and a control assembly 6 . Among them, the compressor 1, the air cooler 2, the electronic expansion valve 3, the evaporator 4, and the liquid receiver 5 are connected in sequence, and the liquid receiver 5 is connected back to the compressor 1 to form a refrigerant circulation loop, and the refrigerant flows along the refrigerant circulation loop The circulating flow is used for refrigeration, and the electronic expansion valve 3 regulates...

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Abstract

The present invention provides a control method for an air-conditioning system. The control method can adopt different pressure-reducing measures to reduce the pressure in time when the pressure of the electronic expansion valve is in different ranges, so as to minimize the forced activation of the high-voltage protection function of the air-conditioning system and even physical leakage. The number of pressure functions can help maintain the performance of the air conditioning system and prolong its service life.

Description

【Technical field】 [0001] The invention relates to a control method of an air conditioning system. 【Background technique】 [0002] Nowadays, many air-conditioning systems use an Electronic Expansion Valve (EXV for short) to control the cooling pressure of the refrigerant more precisely. The electronic expansion valve can adjust the flow of refrigerant by adjusting its opening, and then control the cooling pressure within an appropriate range, so that the system performance can be optimized. The general method of using the electronic expansion valve to control the cooling pressure is to provide the current refrigerant cooling pressure and the cooling temperature of the air cooler as the input signal of the electronic expansion valve to the control unit of the electronic expansion valve. An optimal cooling pressure range corresponding to the cooling temperature is determined, and then the current refrigerant cooling pressure is compared with the optimal cooling pressure range....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/64F24F11/84F24F11/61F24F140/12F24F140/20
CPCF24F11/62F24F11/83F24F2110/00F24F11/30F24F11/70F24F11/64F24F11/84F24F2140/20F24F11/61F25B49/027F25B2600/17F25B2600/19F25B2600/2513F25B49/022F25B2341/063F25B2600/0253F25B2700/195F25B2700/2116Y02B30/70F25B41/34
Inventor 不公告发明人
Owner HANGZHOU SANHUA RES INST CO LTD
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