OIL COOLING TYPE TWO-STAGE COMPRESSOR AND HEAT PUMP

Title:

OIL COOLING TYPE TWO-STAGE COMPRESSOR AND HEAT PUMP

Document Type and Number:

Japanese Patent JP2013133740

Kind Code:

A

Abstract:

To provide an oil cooling type two-stage compressor and a heat pump which can secure oil circulation, even if suction pressure and discharge pressure are changed, and whose performance do not deteriorate.

The oil cooling type two-stage compressor includes: a first stage compression part 8 which intakes gas from a suction channel 12 to compress it with oil and discharges it to an intermediate pressure space 14; a second stage compression part 9 which intakes the gas from the intermediate pressure space 14 to compress it with oil and discharges it to a discharge channel 18; an oil supply channel 27 which supplies the oil to a bearing 24 at a discharge side of the second stage compression part 9; and an oil circulation channel 28 which refluxes the oil flowing from the bearing 24 at the discharge side of the second stage compression part 9 to shut space 15 of space on the way of compression in the first stage compression part 8.

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Inventors:

YOSHIMURA SEIJI
OGAMI TAKAHIRO

Application Number:

JP2011284072A

Publication Date:

July 08, 2013

Filing Date:

December 26, 2011

Export Citation:

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Assignee:

KOBE STEEL LTD

International Classes:

F04C29/04; F04C18/16; F25B41/31

Domestic Patent References:

JPS63102988U	1988-07-04
JPS56118988U	1981-09-10
JPH0622587U	1994-03-25
JPS5145315A	1976-04-17
JPS6278386U	1987-05-19

Foreign References:

WO2007000815A1

2007-01-04

Attorney, Agent or Firm:

Mitsuo Tanaka
Takuji Yamada
Atsushi Maeda

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