The invention discloses an expansion valve for an automobile air conditioner, a compressor control method and a noise reduction system.The expansion valve comprises an expansion valve body and a compressor, the expansion valve body comprises a valve ball located in an in-valve channel, a clearance groove is formed in the abutting position of the valve ball and a valve wall, and the clearance groove enables high pressure and low pressure of the expansion valve body to be normally open; the compressor executes the following steps: controlling the rotating speed of the compressor within M seconds before the air conditioner is started, and prolonging the time of high and low pressure from balanced pressure to stable pressure. Two schemes are mainly provided, one scheme is that a gap groove is formed in the position of a valve ball of the expansion valve, a bypass valve structure is formed, normal opening is achieved, a gas part can pass through the section more easily, and the flowing speed of gas/bubbles is slowed down when the expansion valve is just opened; in addition, the rotating speed of the compressor is controlled when the air conditioner is just started, the time of high and low pressure from balanced pressure to stable pressure is prolonged, and airflow is milder; preferably, the two schemes are combined for use, so that the noise of the hoarseness sound can be reduced as much as possible.

    本发明公开了用于汽车空调的膨胀阀、压缩机控制方法及降噪系统,包括膨胀阀以及压缩机,膨胀阀包括位于阀内通道中的阀球,阀球与阀壁抵接处设置有间隙槽,间隙槽使得膨胀阀高低压常通;压缩机执行如下步骤:空调开启的前M秒时间内,控制压缩机的转速,延长高低压从平衡压力到稳定压力间的时间。本发明主要提出两种方案,一是在膨胀阀的阀球位置开设间隙槽,形成一个旁通阀的结构,此处实现常通,让气体部分更容易通过此段,减缓刚开启时气体/气泡流过的速度;另外,控制空调刚启动时的压缩机转速,拉长高低压从平衡压力到稳定压力间的时间,让气流更加缓和;最优的是上述两个方案相结合使用,能够尽最大可能降低嘶嘶声的噪音。


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    Title :

    Expansion valve for automobile air conditioner, compressor control method and noise reduction system


    Additional title:

    用于汽车空调的膨胀阀、压缩机控制方法及降噪系统


    Contributors:
    HUANG ZHENKUN (author) / CHEN YANCHUN (author) / BA LIANFENG (author) / CHEN TIANXIANG (author) / WANG QINGWEI (author) / YAN SHUAISHUAI (author)

    Publication date :

    2023-03-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht



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