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Car air conditioning system electronic expansion valve control method

An automotive air conditioning system and electronic expansion valve technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of limited car cruising range and limited battery capacity, and achieve the effect of ensuring normal and efficient operation.

Active Publication Date: 2013-04-10
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS
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AI Technical Summary

Problems solved by technology

Especially in electric vehicle systems, the range of the car is limited due to the limited capacity of the battery

Method used

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  • Car air conditioning system electronic expansion valve control method
  • Car air conditioning system electronic expansion valve control method
  • Car air conditioning system electronic expansion valve control method

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Embodiment Construction

[0027] The core of the present invention is to provide a control method for the electronic expansion valve of the automobile air-conditioning system. The relatively constant opening degree can ensure that the opening degree of the electronic expansion valve can be in a stable state, so that the expansion valve in the initial stage is in a stable working state, thereby It can effectively avoid the impact of large disturbances on the expansion valve, ensure the normal and efficient operation of the system and effectively improve the energy saving effect of the system. The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0028] See figure 1 , which is a flow chart of the method for controlling the electronic expansion valve of the automotive air-conditioning system according to the first embodiment.

[0029] like figure 1 As shown, after the compressor starts, obtain the compressor speed signal in real time, and follow the st...

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Abstract

The invention discloses a car air conditioning system electronic expansion valve control method. In a primary stage of start of a compressor, the electronic expansion valve is controlled to reach a constant valve opening corresponding to the rotating speed of the compressor according to timely collected signals of compressor rotating speed to enter a normal operation and control stage by the constant valve opening corresponding to the rotating speed of the compressor and ensure that the valve opening of the electronic expansion valve is transmitted into a control mode of the degree of superheat conveniently. The valve opening of the electronic expansion valve is not influenced by the degree of superheat of the car air conditioning system in the primary stage of start of the compressor. Compared with the prior art, in the primary stage of start of the compressor, the valve opening of the electronic expansion valve is kept at the constant valve opening by the electronic expansion valve control method through the rotating speed of the compressor, the constant valve opening ensures that the valve opening of the electronic expansion valve can be in a relatively stable state and the expansion valve of the primary stage is under a stable operation condition, and therefore influence on the expansion valve resulting from great disturbance is effectively avoided, and normal and high-efficient operation of the system is ensured.

Description

technical field [0001] The invention relates to refrigeration control technology, in particular to a method for controlling an electronic expansion valve of an automobile air-conditioning system. Background technique [0002] As we all know, in the automobile system, the automobile air conditioner is the main energy consumption unit. With the improvement of the energy saving requirements of the whole vehicle, the energy saving of the automobile air conditioner is also gradually proposed. Especially in electric vehicle systems, the cruising range of the car is limited due to the limited capacity of the battery. Therefore, the energy saving of electric vehicle air conditioners is particularly important. [0003] In the automotive air-conditioning system, the key to energy saving of the system is to effectively control the flow of refrigerant in the system so that the system can play the best performance. Specific to electric vehicle air conditioners, since the compressor can...

Claims

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Application Information

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IPC IPC(8): F25B49/02
Inventor 张荣荣爱德文·约翰·斯坦科唐立席卫东
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS
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