Title:
REFRIGERATION AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO2007110908
Kind Code:
A9
Abstract:
A refrigeration air conditioning device whose heating ability is higher than that of conventional devices with a gas injection cycle so that the device can exhibit sufficient heating ability in a cold region where outside air temperature is equal to or lower than -10°C. In the refrigeration air conditioner, a compressor (3), an indoor heat exchanger (6), a first pressure reduction device (11), and an outdoor heat exchanger (12) are connected in a ring form and heat is supplied from the indoor heat exchanger. The refrigeration air conditioner has a first inside heat exchanger (9) for exchanging heat between refrigerant that is located between the indoor heat exchanger and the first pressure reduction device and refrigerant that is located between the outdoor heat exchanger and the compressor; an injection circuit (13) for causing a portion of the refrigerant that is located between the indoor heat exchanger and the first pressure reduction device to bypass and injecting the portion into a compression chamber in the compressor; a pressure reduction device (14) for injection, provided in the injection circuit; and a second inside heat exchanger (10) for exchanging heat between refrigerant that is reduced in pressure by the pressure reduction device for injection and refrigerant that is located between the indoor heat exchanger and the first pressure reduction device.
Inventors:
UNEZAKI FUMITAKE (JP)
SAITOU MAKOTO (JP)
SAIKUSA TETSUJI (JP)
AOKI MASANORI (JP)
YOSOMIYA MASATO (JP)
SAITOU MAKOTO (JP)
SAIKUSA TETSUJI (JP)
AOKI MASANORI (JP)
YOSOMIYA MASATO (JP)
Application Number:
PCT/JP2006/306119
Publication Date:
February 21, 2008
Filing Date:
March 27, 2006
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
UNEZAKI FUMITAKE (JP)
SAITOU MAKOTO (JP)
SAIKUSA TETSUJI (JP)
AOKI MASANORI (JP)
YOSOMIYA MASATO (JP)
UNEZAKI FUMITAKE (JP)
SAITOU MAKOTO (JP)
SAIKUSA TETSUJI (JP)
AOKI MASANORI (JP)
YOSOMIYA MASATO (JP)
International Classes:
F25B1/00; F25B13/00
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