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Patent Searching and Data


Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2015/029204
Kind Code:
A1
Abstract:
In this air conditioner, which is provided with an accumulator inside which oil from an oil separator is retained, an appropriate amount of oil is supplied to a compressor so as to improve the reliability of said compressor and reduce electricity consumption. The accumulator (40) is provided with the following: an oil inflow pipe (26) via which oil separated out by the oil separator (5) flows in; a refrigerant inflow pipe (27) via which a refrigerant flows in; an oil accumulation section (81) in which the oil flowing in via the oil inflow pipe (26) is accumulated; a liquid-refrigerant accumulation section (82) in which the liquid refrigerant flowing in via the refrigerant inflow pipe (27) is accumulated, said liquid-refrigerant accumulation section (82) being separate from the oil accumulation section (81); an oil return pipe (53), said oil return pipe (53) having an opening (72) via which oil accumulated at the bottom of the oil accumulation section (81) is drawn in, that sends said oil upwards; and a refrigerant return pipe (52), said refrigerant return pipe (52) having an opening (74) via which liquid refrigerant accumulated at the bottom of the liquid-refrigerant accumulation section (82) is drawn in, that sends said liquid refrigerant upwards. The accumulator is designed such that the refrigerant return pipe (52) and the oil return pipe (53) join and the refrigerant from the refrigerant inflow pipe (27) flows through either the refrigerant return pipe (52) or the oil return pipe (53).

Inventors:
SEKIYA Sachio (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
XUE Jun (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
Application Number:
JP2013/073246
Publication Date:
March 05, 2015
Filing Date:
August 30, 2013
Export Citation:
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Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
International Classes:
F25B43/00; F25B43/02
Foreign References:
JPH07305921A
JP2010203733A
JPH0383780U
JP3163312B2
JP2002081801A
JPH10267472A
JP2000249432A
JP2004125308A
Attorney, Agent or Firm:
INOUE Manabu et al. (6-1, Marunouchi 1-chome, Chiyoda-k, Tokyo 20, 〒1008220, JP)
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