| 摘要 |
FIELD: engines and pumps.SUBSTANCE: invention relates to device (21) for prevention of memory effect of cryogenic pumps, which includes the first cooling stage (23) and the second cooling stage (25), which adjoins the first cooling stage (23) in axial direction. Cylindrical enclosure (31) has hole (37) and bottom (35). Two-stage cooling head (21) passes through bottom (35) along the centre so that the first cooling stage (23) is located outside enclosure (31), and the second cooling stage (25) is located inside enclosure (31). Between enclosure (31) and the first cooling stage (23) there is intermediate space (34). Bottom of enclosure (31) is connected to the first cooling stage (23) in a heat-conducting manner by means of heat bridge (33). Cooling panel (43) serving as the pump surface is connected to the second cooling stage (25) and provided inside enclosure (31). Reflector (39) is located in the area of hole (37) of cylindrical enclosure (31) and is in heat-conducting contact with enclosure (31) and the first cooling stage (23). Heat bridge (33) is provided between enclosure (31) and the first cooling stage (23) at some distance from its end surface (55). The invention also relates to housing (12) that encloses cooling head (21) and cryogenic pump (11) in which cooling head (21) is arranged.EFFECT: higher efficiency.12 cl, 2 dwg |
