Title:
ENGINE HEAT PUMP
Document Type and Number:
WIPO Patent Application WO/2005/114064
Kind Code:
A1
Abstract:
An engine heat pump capable of increasing operating efficiency (energy efficiency) by reducing compression work without increasing the use amount of electric power. The engine heat pump comprises a main compressor (2) and an auxiliary compressor (3) driven by an engine (4), an indoor heat exchanger (8), an outdoor heat exchanger (5), an expansion valve (23) for the indoor heat exchanger, an expansion valve (21) for the outdoor heat exchanger, and a supercooling heat exchanger (15) installed in a liquid refrigerant passing route (main route (26)) among connection routes for the indoor heat exchanger (8) and the outdoor heat exchanger (5) and supercooling a liquid refrigerant before branching by a refrigerant for supercooling branched to a branched route (27) (27a, 27b). The refrigerant discharged from the auxiliary compressor (3) is merged to the refrigerant discharged from the main compressor (2). The liquid refrigerant for supercooling is compressed by the auxiliary compressor (3), and the capacity ratio (auxiliary compressor capacity ratio R) of the capacity of the auxiliary compressor (3) to the total capacity of the main compressor (2) and the auxiliary compressor (3) is set to 20 to 29%.
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Inventors:
MINAMI KEN-ICHI
FUKUDOME JIROU
AZUMA HIROSHI
YAMANAKA KEISHI
KUREHA EITA
FUKUDOME JIROU
AZUMA HIROSHI
YAMANAKA KEISHI
KUREHA EITA
Application Number:
PCT/JP2005/007411
Publication Date:
December 01, 2005
Filing Date:
April 18, 2005
Export Citation:
Assignee:
YANMAR CO LTD (JP)
MINAMI KEN-ICHI
FUKUDOME JIROU
AZUMA HIROSHI
YAMANAKA KEISHI
KUREHA EITA
MINAMI KEN-ICHI
FUKUDOME JIROU
AZUMA HIROSHI
YAMANAKA KEISHI
KUREHA EITA
International Classes:
F25B27/00; F25B31/00; F25B1/00; F25B41/00; F25B1/10; (IPC1-7): F25B1/00; F25B27/00; F25B31/00
Foreign References:
| JPS60226669A | 1985-11-11 | |||
| JPH11193966A | 1999-07-21 | |||
| JPH0618121A | 1994-01-25 |
Other References:
See also references of EP 1762792A4
Attorney, Agent or Firm:
Yano, Juichiro (Twin 21 MID Tower 34th Floor 1-61, Shiromi
2-chome, Chuo-ku, Osaka-sh, Osaka 34, JP)
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