| 摘要 |
PURPOSE:To simplify the device, by eliminating opening and closing valves, such as a magnet valve, etc. by utilizing the peformance of controlling the flow rate of refrigerant in a temp sensing expansion valve especially for an evaporator multi- connection system air conditioning and refrigerating device. CONSTITUTION:A communication pipe 10 to an evaporator 3 from a temp type automatic expansion valve 4 and a gas pipe 11 elongatedly mounted from an outlet of the eaporator 3 are approached in their one portions, and a temp sensing cylinder 7, the control element of a temp sensing control valve 4, is put between the both adjacent pipes 10, 11, thus detecting the temp of both pipes by means of the temp sensing cylinder 7. Since an electric heater 8 is related to the temp sensing cylinder 7 and the cooling action of the communcation pipe 10 side to the temp sensing cylinder 7 can be offset, the temp sensing cylinder 7 can detect temp under a wet conditon by the effect of temp due to refrigerant liquid in a liquid pipe 5, thus positively closing the pipe, then allowing the accurate stop of operation even if opening and closing valves, such as, a magnet valve, etc. are omitted, provided that the device can be simpified. |
