Title:
HEAT PUMP
Document Type and Number:
WIPO Patent Application WO/2019/093420
Kind Code:
A1
Abstract:
A refrigerant circuit (2) has: a first flow path (C1) through which the downstream side of a first evaporator (11) and the upstream side of a lower-stage side compressor (3) are connected; a first valve (21) that opens/closes the first flow path (C1); a second flow path (C2) through which the downstream side of the first evaporator (11) and the upstream side of a higher-stage side compressor (4) are connected; a second valve (22) that opens/closes the second flow path (C2); a third flow path (C3) through which the downstream side of a second evaporator (12) and the upstream side of the lower-stage side compressor (3) are connected; a third valve (23) that opens/closes the third flow path (C3); a fourth flow path (C4) through which the downstream side of the second evaporator (12) and the upstream side of the higher-stage side compressor (4) are connected; and a fourth valve (24) that opens/closes the fourth flow path (C4).
More Like This:
Inventors:
KOBAYASHI TAKAYUKI (JP)
KATSURAYAMA YOHEI (JP)
NAKAYAMA HIROSHI (JP)
TOKUNAGA YASUHARU (JP)
KATSURAYAMA YOHEI (JP)
NAKAYAMA HIROSHI (JP)
TOKUNAGA YASUHARU (JP)
Application Number:
PCT/JP2018/041487
Publication Date:
May 16, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
CHUBU ELECTRIC POWER (JP)
KANSAI ELECTRIC POWER CO (JP)
CHUBU ELECTRIC POWER (JP)
KANSAI ELECTRIC POWER CO (JP)
International Classes:
F25B1/10; F25B5/02
Foreign References:
| JPH06257889A | 1994-09-16 | |||
| JP2009210138A | 2009-09-17 | |||
| JP2009079863A | 2009-04-16 | |||
| JP2007178120A | 2007-07-12 | |||
| JP2013076541A | 2013-04-25 | |||
| JPH0210063A | 1990-01-12 | |||
| JPS56105259A | 1981-08-21 | |||
| JPH0611198A | 1994-01-21 | |||
| JP2017215660A | 2017-12-07 | |||
| JP2016090102A | 2016-05-23 |
Other References:
See also references of EP 3708924A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
Download PDF: