Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/045116
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a refrigeration cycle device capable of suppressing an increase in high pressure side coolant pressure while suppressing decreases in heating temperature and heating performance of a heating medium.
This refrigeration cycle device is provided with a compressor that compresses a coolant, a high temperature side heat exchanger that causes the coolant compressed by the compressor to exchange heat with a heating medium, an expansion unit that expands the coolant having passed through the high temperature side heat exchanger, a low temperature side heat exchanger that causes the coolant having passed through the expansion unit to exchange heat with a fluid, and a conveyance unit that conveys the fluid to the low temperature side heat exchanger. The refrigeration cycle device is provided with a control means that, with coolant pressure after being compressed by the compressor as high pressure side coolant pressure, with coolant pressure before being compressed by the compressor as low pressure side coolant pressure, and with an operation state that minimizes the high pressure side coolant pressure when the low pressure side coolant pressure is changed with coolant compressing capability of the compressor kept constant as a target operation state of a refrigeration cycle, controls the operation of the conveyance unit so that the actual operation state approaches the target operation state.
Inventors:
YANACHI SATORU (JP)
KATO YOHEI (JP)
OBAYASHI TOMOYOSHI (JP)
KATO YOHEI (JP)
OBAYASHI TOMOYOSHI (JP)
Application Number:
PCT/JP2013/076344
Publication Date:
April 02, 2015
Filing Date:
September 27, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Foreign References:
| JP2008304134A | 2008-12-18 | |||
| JP2004226036A | 2004-08-12 | |||
| JP2002310497A | 2002-10-23 | |||
| JP2007155157A | 2007-06-21 | |||
| JP2005127588A | 2005-05-19 | |||
| JP2003222396A | 2003-08-08 | |||
| JP2009008308A | 2009-01-15 | |||
| JP2010169350A | 2010-08-05 | |||
| JP2012184858A | 2012-09-27 |
Other References:
See also references of EP 3051224A4
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
Takada 守 (JP)
Takada 守 (JP)
Download PDF: