Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/032633
Kind Code:
A1
Abstract:
A refrigeration device (1) having a refrigeration circuit (10) formed by sequentially
connecting a booster compression mechanism (41) with variable operating capacity,
a high-stage side compression mechanism (11) with variable operating capacity,
an outdoor heat exchanger (13), a refrigeration expansion valve (32), and a refrigeration
heat exchanger (31). The refrigeration device (1) performs cooling operation
in which refrigerant is condensed by being compressed in two stages and then evaporated
by the refrigeration heat exchanger (31). A controller (100) for the refrigeration
device (1) has a first capacity controlling section (101) and a second capacity
controlling section (102). The first capacity controlling section (101) controls
the operating capacity of the booster compression mechanism (41) so that the
temperature of evaporation in the refrigeration heat exchanger (31) is a target
evaporation temperature. The second capacity controlling section (102) controls
the operating capacity of the high-stage side compression mechanism (11) so
that the temperature of discharge of the booster compression mechanism (41)
is a target discharge temperature.
Inventors:
SAKAE SATORU (JP)
SHINOHARA IWAO (JP)
NAKAJIMA HIROTO (JP)
TAKEUCHI RYUUJI (JP)
SHINOHARA IWAO (JP)
NAKAJIMA HIROTO (JP)
TAKEUCHI RYUUJI (JP)
Application Number:
PCT/JP2007/067386
Publication Date:
March 20, 2008
Filing Date:
September 06, 2007
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
SAKAE SATORU (JP)
SHINOHARA IWAO (JP)
NAKAJIMA HIROTO (JP)
TAKEUCHI RYUUJI (JP)
SAKAE SATORU (JP)
SHINOHARA IWAO (JP)
NAKAJIMA HIROTO (JP)
TAKEUCHI RYUUJI (JP)
International Classes:
F25B1/10; F25B1/00
Foreign References:
| JPH0526524A | 1993-02-02 | |||
| JPS60159561A | 1985-08-21 | |||
| JP2000234811A | 2000-08-29 |
Attorney, Agent or Firm:
MAEDA, Hiroshi et al. (5-7 Hommachi 2-chome, Chuo-ku, Osaka-sh, Osaka 53, JP)
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