Title:
HEAT PUMP
Document Type and Number:
WIPO Patent Application WO/2013/046647
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a heat pump in which heat pump efficiency does not decrease even when an auxiliary heat exchanger is used to adjust the thermal balance of the coolant circuit. A coolant circuit (10) is provided with an auxiliary heat exchanger (1) which exchanges heat between outside air and the coolant in the coolant circuit (10). This auxiliary heat exchanger (1) is connected so as to link a connecting passage (4) between a low-stage compressor (11) and a high-stage compressor (12), and a connecting passage (7) between a low-stage expansion valve (15) and a high-stage expansion valve (14).
Inventors:
OKAMOTO MASAKAZU
Application Number:
PCT/JP2012/006102
Publication Date:
April 04, 2013
Filing Date:
September 25, 2012
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B1/10; F25B29/00
Foreign References:
| JPS6387559A | 1988-04-18 | |||
| JP2005308375A | 2005-11-04 | |||
| JP2009229055A | 2009-10-08 | |||
| JPS6325388A | 1988-02-02 | |||
| JPH02309157A | 1990-12-25 | |||
| JPS5848824B2 | 1983-10-31 | |||
| JP2010156493A | 2010-07-15 | |||
| JP2009180492A | 2009-08-13 | |||
| JPH09300940A | 1997-11-25 | |||
| JP2001349639A | 2001-12-21 |
Other References:
See also references of EP 2770276A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Patent business corporation MAEDA PATENT OFFICE (JP)
Patent business corporation MAEDA PATENT OFFICE (JP)
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Claims: