| 摘要 |
<p>The present invention provides a temperature expansion valve, which improves the sealed manner of a temperature sensing cylinder. The superheat deviation in the control evaporation temperature region is fixed, and when the body temperature of the temperature expansion valve is lower than the temperature of the temperature sensing cylinder, superheat deviation can also be reduced. The refrigerant flowing in the refrigeration cycle apparatus uses an R32 refrigerant. The R125 refrigerant other than the R32 refrigerant and the non-condensable gas are filled into a temperature sensing tube (3) cross by using a manner of mixed gas cross charging. Alternatively, an R218 refrigerant other than the R32 refrigerant and the non-condensable gas are filled to the temperature sensing tube (3) by using a mixed gas cross filling manner. The non-condensable gas is nitrogen. The volume ratio of the R125 refrigerant and nitrogen in the superheated gaseous state is in the range of 84:16 to 61:39. The volume ratio of the R218 refrigerant and nitrogen in the superheated gaseous state is in the range of 52:48 to 36:64. The non-condensable gas is not limited to nitrogen, can also be argon, carbon dioxide, or helium.</p> |
