Title:
【発明の名称】冷凍剤ポンプ
Document Type and Number:
Japanese Patent JP2877751
Kind Code:
B2
Abstract:
A cryogenic pump is disclosed for pumping liquified gas from one container to another container or a point of use. The pump has a main housing (12) defining a cylinder in which a hollow piston (34) is reciprocable by means of a piston rod (42) and divides the interior of the main housing into a supercharger chamber (50) and a sump chamber (52). The lower end of the main housing is closed by a block (24) formed with a fixed piston (54), defining a high pressure chamber (60) in the hollow piston (34), and with inlet ports (76) leading into the sump chamber (52). An outer housing (14) defines a precharge chamber (82) around the main housing (12). During reciprocation of the hollow piston (34), liquid is drawn in through the ports (76) and progressively pumped, though non-return valves, in sequence through the sump chamber (52), the precharge chamber (82), the supercharger chamber (50), and the high pressure chamber (60) to an outlet line (136). The block (24) is located within and adjacent to the bottom of the container. The pump arrangement allows the container to be substantially emptied thereby avoiding waste of the contained liquified gas.
Inventors:
BURUUSU JII BURAUN
ROBAATO II KUROORU
FUIRITSUPU JEI UESUTAAMAN
ROBAATO II KUROORU
FUIRITSUPU JEI UESUTAAMAN
Application Number:
JP11748296A
Publication Date:
March 31, 1999
Filing Date:
May 13, 1996
Export Citation:
Assignee:
KURAIOJENITSUKU GURUUPU INC
International Classes:
F04B15/08; F04B7/04; F04B19/02; F04B25/00; (IPC1-7): F04B25/00
Domestic Patent References:
| JP518351A |
Other References:
【文献】米国特許5511955(US,A)
【文献】英国特許264395(GB,A)
【文献】英国特許264395(GB,A)
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)