| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressor including a check valve provided in an injection passage formed in a housing member, capable of suppressing the pressure loss of refrigerant to be injected.SOLUTION: The compressor includes a fixed scroll 30 having an injection passage 31 communicated with a compression chamber Sc, a check valve 50 provided in the passage 31, and an injection pipe 25 for supplying refrigerant to the passage 31. The check valve has a valve body 51 slidably arranged in the passage 31, and a valve presser member 52 for restricting the movement of the valve body to the side of the pipe 25 during preventing the backflow of the refrigerant from the compression chamber to the pipe 25. The valve body has a center hole 51a, and the valve presser member has a peripheral hole 52a opposed to a peripheral edge 51b of the valve body. When supplying the refrigerant from the pipe 25 to the compression chamber, the refrigerant is supplied through the hole 52a and the hole 51a to the compression chamber, and when using the check valve for preventing the backflow, the hole 51a and the hole 52a are closed by the valve presser member and by the valve body, respectively.SELECTED DRAWING: Figure 3 |
