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Patent Searching and Data


Title:
AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/047331
Kind Code:
A1
Abstract:
Provided is an air conditioning device in which refrigerant stagnation at the downstream side of an evaporator is prevented and refrigerant circulation is excellent. This air conditioning device is provided with: a main circuit in which a compressor, a refrigerant flow passage switching device, a load-side heat exchanger, a load-side throttling device, and three heat source-side heat exchangers are connected by piping, and a refrigerant is circulated. When the three heat source-side heat exchangers are used as condensers, a first heat source-side heat exchanger and a second heat source-side heat exchanger are connected in parallel to each other at the upstream side, and a third heat source-side heat exchanger is connected in series at the downstream side in a first serial refrigerant flow passage. In addition, when the three heat source-side heat exchangers are used as evaporators, the first heat source-side heat exchanger, the second heat source-side heat exchanger, and the third heat source-side heat exchanger are connected in parallel to each other in a parallel refrigerant flow passage. The air conditioning device has a heat exchanger flow passage switching device which switches the refrigerant flow passage to the first serial refrigerant flow passage when the three heat source-side heat exchangers are used as condensers, and which switches the refrigerant flow passage to the parallel refrigerant flow passage when the three heat source-side heat exchangers are used as evaporators.

Inventors:
MIZUTANI, Shuhei (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2016/076785
Publication Date:
March 15, 2018
Filing Date:
September 12, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F25B13/00; F24F5/00; F25B5/00
Domestic Patent References:
WO2012147336A12012-11-01
Foreign References:
JP2012107857A2012-06-07
US5758514A1998-06-02
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (East 8F, TORANOMON TWIN BLDG. 10-1 Toranomon 2-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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