| 摘要 |
PURPOSE:To reduce the effective intake stroke by forming a large-diameter part in the intermediate part in the direction of axis of a piston inserted into a cylinder and allowing an annular gas-liquid separating chamber formed onto the cylinder on the outer periphery of the large-diameter part to communicate to a compression chamber through an opened part. CONSTITUTION:When a piston 12 is moved in the direction (a), the low-temp. liquefied gas is introduced into a gas-liquid separating chamber 16 from an intake inlet 17, and the gas separated in the separating chamber 16 is sent-out from a gas introducing part 18, and the liquid is introduced into the first-stage compression chamber 13 from an opened part 19. When the piston 12 is moved in the direction (b), the opened part 19 is closed by the outer periphery of the large-diameter part 12A of the piston, and the liquid pressurized in the compression chamber 13 flows in a passage 15 and is introduced into the second-stage compression chamber 14, pushing-away an intake valve piece 23. The liquid in the compression chamber 14 is compressed when the piston 12 shifts in the direction (a), and the pressurized liquid is supplied to a position in use through a discharge valve 14. |
