| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a device and to reduce costs by providing a bypass passage for feeding a high-pressure refrigerant to a refrigerant outlet and a pilot operation solenoid valve for opening or closing the bypass passage in one piece with a body block. SOLUTION: A annular groove 40a that is opened in a ring shape is formed at the side wall part of a body block 11 at the opposite side of a refrigerant entrance 12, and an entrance side refrigerant channel 14 that is formed straightly at the body block 11 is passed through the side part of a valve seat 16 to communicate with the bottom surface of the annular groove 40a. Further, a communication hole 40b that is formed at the body block 11 so that is directly communicates with an outlet side refrigerant channel 15 is opened inside the annular groove 40, thus forming a bypass passage. Then, the end face of an annular wall for screening the annular groove 40a an the communication hole 40b is formed at a valve seat 41, and a valve body 53 is arranged opposite to the valve seat 41 from the outside, thus forming a pilot operation solenoid valve 50.
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