Title:
HEAT PUMP CYCLE
Document Type and Number:
Japanese Patent JP2014231948
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a heat pump cycle switchable between a gas injection cycle and a normal cycle, capable of solving at least one of various problems during an operation for filling the cycle with refrigerant.SOLUTION: A heat pump cycle 10 comprises: a high-pressure-side communication path 27 communicating a high-pressure refrigerant path in which refrigerant equal in pressure to the refrigerant discharged from a discharge port 11c of a compressor 11 flows with an intermediate-pressure refrigerant path 15 among refrigerant paths in the cycle 10; and a high-pressure-side check valve 271 opening the high-pressure-side communication path 27 when a refrigerant filling operation is carried out. The heat pump cycle 10 further comprises: a low-pressure-side communication path 28 communicating a low-pressure refrigerant path in which the refrigerant equal in pressure to the refrigerant attracted into an intake port 11b of the compressor 11 with the intermediate-pressure refrigerant path 15 among the refrigerant paths in the cycle 10; and a low-pressure-side check valve 281 opening the low-pressure-side communication path 28 when the refrigerant filling operation is carried out.
Inventors:
INABA ATSUSHI
OZAKI SHOICHI
OISHI SHIGEJI
OZAKI SHOICHI
OISHI SHIGEJI
Application Number:
JP2013112946A
Publication Date:
December 11, 2014
Filing Date:
May 29, 2013
Export Citation:
Assignee:
DENSO CORP
International Classes:
F25B13/00; B60H1/22; F25B1/00; F25B6/04
Domestic Patent References:
| JPH11153369A | 1999-06-08 | |||
| JPS6144251A | 1986-03-03 | |||
| JP2012042114A | 2012-03-01 | |||
| JPS5585853A | 1980-06-28 | |||
| JP2012017951A | 2012-01-26 | |||
| JPS5517017A | 1980-02-06 | |||
| JP2012233676A | 2012-11-29 | |||
| JP2012127565A | 2012-07-05 | |||
| JP2012181005A | 2012-09-20 | |||
| JP2012127565A | 2012-07-05 | |||
| JP2004293896A | 2004-10-21 | |||
| JP2012184750A | 2012-09-27 | |||
| JP2012233676A | 2012-11-29 | |||
| JPH11153369A | 1999-06-08 | |||
| JPS6144251A | 1986-03-03 | |||
| JP2012042114A | 2012-03-01 | |||
| JPS5585853A | 1980-06-28 | |||
| JP2012017951A | 2012-01-26 | |||
| JPS5517017A | 1980-02-06 |
Foreign References:
| WO2009136581A1 | 2009-11-12 | |||
| WO2013001572A1 | 2013-01-03 | |||
| WO2009136581A1 | 2009-11-12 |
Attorney, Agent or Firm:
Patent business corporation ゆうあい patent firm