Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/092771
Kind Code:
A1
Abstract:
Provided is a refrigeration cycle device with which depletion of oil deficiency in a compressor can be avoided by means of a simple pipeline structure. This refrigeration cycle device is provided with a second pressure reduction device (22) connected in parallel to a first pressure reduction device (18), a second evaporator (20) connected to the second pressure reduction device, and a return-side connecting pipeline (42) connected to the intake side of the compressor. The second pressure reduction device has a throttle-forming portion (221a) in which a throttle hole (222c) is formed, a return-side passage (224) through which refrigerant outflowing from the second evaporator flows to the return-side connecting pipeline, and a hole opening adjustment mechanism (230) for making the hole opening of the throttle hole smaller in response to lower refrigerant temperature within the return-side passage, and reducing the pressure of the refrigerant inflowing to the second evaporator. A coupling part (424) of the return-side connecting pipeline has an upward passage (424b) communicating with the return-side passage, and extending farther upward than the return-side passage, so that in a state in which the flow of forced air for heat exchange with the refrigerant flowing through the second evaporator is halted, refrigerant entering the liquid phase state collects within the return-side passage.
Inventors:
NAKAMURA TAKESHI (JP)
SHINKAI HIDETAKA (JP)
SHINKAI HIDETAKA (JP)
Application Number:
PCT/JP2015/005962
Publication Date:
June 16, 2016
Filing Date:
December 01, 2015
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B41/00; B60H1/32; F25B5/02; F25B41/06
Foreign References:
| JP2003042599A | 2003-02-13 | |||
| JP2009019847A | 2009-01-29 | |||
| JP2007333290A | 2007-12-27 | |||
| JP2002067669A | 2002-03-08 | |||
| JP2009126300A | 2009-06-11 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
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