Title:
REFRIGERATION CYCLE SYSTEM AND METHOD FOR CIRCULATING REFRIGERANT
Document Type and Number:
WIPO Patent Application WO/2011/122085
Kind Code:
A1
Abstract:
Disclosed is a refrigeration cycle system which can provide improved heating capacity and efficiency under conditions of low outside-air temperature. In the refrigeration cycle system, a compressor, a condenser, an ejector, and a gas-liquid separator are sequentially coupled via a refrigerant pipe. The liquid refrigerant flow outlet of the gas-liquid separator and the refrigerant intakes of the evaporator and the ejector are sequentially coupled, and the gas refrigerant flow outlet of the gas-liquid separator and the intake of the compressor are coupled. In between the condenser and the refrigerant flow inlet of the ejector, an inner heat exchanger and a first flow regulating valve are coupled in series. The system also includes a first bypass circuit which connects between the refrigerant flow outlet of the condenser and an intermediate pressure portion of the compressor via a second flow regulating valve and the inner heat exchanger. Further included is a second bypass circuit which connects between the refrigerant flow outlet of the inner heat exchanger and the liquid refrigerant flow outlet of the gas-liquid separator via a third flow regulating valve. The system is operated in a manner such that while the second flow regulating valve is opened to allow a refrigerant to flow through the first bypass circuit, a fourth flow regulating valve is switched to open or close and the third flow regulating valve is closed or opened.
Inventors:
HIGASHIIUE, Shinya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
東井上 真哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
OKAZAKI, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
岡崎 多佳志 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
東井上 真哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
OKAZAKI, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
岡崎 多佳志 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
Application Number:
JP2011/051469
Publication Date:
October 06, 2011
Filing Date:
January 26, 2011
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
HIGASHIIUE, Shinya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
東井上 真哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
OKAZAKI, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
HIGASHIIUE, Shinya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
東井上 真哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
OKAZAKI, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
International Classes:
F25B1/00
Attorney, Agent or Firm:
MIZOI, Shoji et al. (MIZOI INTERNATIONAL PATENT FIRM, NTA Ofuna Building 3rd floor 17-10, Ofuna 2-chome, Kamakura-sh, Kanagawa 56, 〒2470056, JP)
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