Title:
TWO-STAGE PRESSURE BOOSTING TYPE REFRIGERATION CYCLE
Document Type and Number:
WIPO Patent Application WO/2017/038131
Kind Code:
A1
Abstract:
This two-stage pressure boosting type refrigeration cycle (10) has suction-side guide sections (101a, 101d) provided in a portion of a low stage-side suction pipe (101), said portion extending to a refrigerant suction side of a low stage-side compressor (11) from a bypass branch section (22) from which the low stage-side suction pipe (101) branches off to a bypass pipe (105), wherein the suction-side guide sections (101a, 101d) guide lubricating oil from the refrigerant suction side of the low stage-side compressor (11) to the bypass branch section (22) side. The positions of the suction-side guide sections (101a, 101d) in the vertical direction are equal to or higher than that of the bypass branch section (22) in the vertical direction, and a portion (101b) on the refrigerant suction side of the low stage-side compressor (11) is higher than a portion (101c) on the bypass branch section (22) side in the vertical direction.
Inventors:
TAKIZAWA RYO (JP)
Application Number:
PCT/JP2016/058601
Publication Date:
March 09, 2017
Filing Date:
March 17, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B1/10; F25B1/00; F25B43/02
Foreign References:
| JP2014074525A | 2014-04-24 | |||
| JP2010139155A | 2010-06-24 | |||
| JPH11311456A | 1999-11-09 | |||
| JP2004324915A | 2004-11-18 | |||
| JPH073247Y2 | 1995-01-30 | |||
| JP2006170488A | 2006-06-29 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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