Title:
超臨界サイクルおよびそれを用いたヒートポンプ給湯機
Document Type and Number:
Japanese Patent JP5851771
Kind Code:
B2
Abstract:
To provide a supercritical cycle capable of setting a relatively low design pressure for devices subsequent to an intermediate pressure receiver and thereby reducing manufacturing costs while reducing thickness of each device and thereby achieving enhanced performance in proportion to the reduced thickness, and a heat pump water heater using the same. A supercritical cycle, having a refrigerant circuit (21) configured to include a compressor (9), a radiator (11), a first electronic expansion valve (12), an intermediate pressure receiver (13), second electronic expansion valves (16A, 16B), and evaporators (17A, 17B), which are connected in this order via a pipe, includes: a pressure sensor (34) configured to be placed on a downstream side of the first electronic expansion valve (12) to detect intermediate pressure; and a control means (35) configured to prohibit control of the first electronic expansion valve (12) to an open direction when a detection value of the pressure sensor (34) satisfies a predetermined intermediate pressure condition.
Inventors:
Satoshi Watanabe
Shigeru Yoshida
Takuya Okada
Taku Sotomura
Minamasa Omura
Shigeru Yoshida
Takuya Okada
Taku Sotomura
Minamasa Omura
Application Number:
JP2011190130A
Publication Date:
February 03, 2016
Filing Date:
August 31, 2011
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F25B1/10; F25B1/00; F25B30/02
Domestic Patent References:
| JP2001133058A | ||||
| JP2005214442A | ||||
| JP2006343017A | ||||
| JP2008064438A | ||||
| JP2008096093A |
Attorney, Agent or Firm:
Noriharu Fujita
Kunio Ueda
Kunio Ueda