Title:
AIR CONDITIONER AND REFRIGERANT AMOUNT DETECTION METHOD FOR AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2011/070954
Kind Code:
A1
Abstract:
Provided are an air conditioner and refrigerant amount detection method for an air conditioner, which make it possible to constantly detect the amount of charged refrigerant with high accuracy without a heating means specially provided in a liquid level detecting circuit and even under low external temperature. An air conditioner (1), which is provided with a supercooling circuit (20), comprises: a first liquid level detecting circuit (40) which connects one position at a predetermined height inside a receiver (15) to the inlet side of a compressor (10) via the supercooling circuit (20); a second liquid level detecting circuit (45) which is branched from a bypass circuit (41) of the first liquid level detecting circuit (40) and acts as a bypass for leading, to the supercooling circuit (20), the refrigerant that has been taken out from the receiver (15); a temperature detecting unit (44) which detects the temperature of the refrigerant that has been depressurized by passing through the first liquid level detecting circuit (40) or the second liquid level detecting circuit (45); and a refrigerant amount detecting unit (48) which detects, by the temperature detecting unit (44), the post-depressurization temperature of the refrigerant that has been taken out from the receiver (15) via the first liquid level detecting circuit (40) or the second liquid level detecting circuit (45), and determines the amount of charged refrigerant on the basis of the thus detected temperature.
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Inventors:
KATO, Takahiro (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
加藤 隆博 (〒15 東京都港区港南二丁目１６番５号 三菱重工業株式会社内 Tokyo, 〒1088215, JP)
加藤 隆博 (〒15 東京都港区港南二丁目１６番５号 三菱重工業株式会社内 Tokyo, 〒1088215, JP)
Application Number:
JP2010/071481
Publication Date:
June 16, 2011
Filing Date:
December 01, 2010
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 〒1088215, JP)
KATO, Takahiro (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 〒1088215, JP)
KATO, Takahiro (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
International Classes:
F25B49/02; F25B1/00; F25B45/00
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (37F The Landmark Tower Yokohama, 2-2-1 Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 37, 〒2208137, JP)
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