Title:
INTERMEDIATE HEAT EXCHANGER AND AIR-CONDITIONING HOT-WATER SUPPLY SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO/2011/045973
Kind Code:
A1
Abstract:
A refrigerant circuit for air temperature adjustment and a refrigerant circuit for hot-water supply are arranged so that the circuits are in a heat exchanging relationship with each other, and in the arrangement, the heat exchange is performed through a rationally configured heat exchanger to improve convenience and to further improve energy efficiency.
An intermediate heat exchanger (23) used for an air-conditioning hot-water supply system and exchanging heat among a refrigerant circulating in a refrigerant circuit for air temperature adjustment, a refrigerant circulating in a refrigerant circuit for hot-water supply, and a heat medium circulating in a heat medium circuit comprises an outer tube and four inner tubes. The outer tube serves as a heat transfer tube (23c) for a heat medium, the heat transfer tube (23c) being connected to the heat medium circuit through piping. Two of the four inner tubes serve as heat transfer tubes (23a) for a refrigerant for air temperature adjustment, the heat transfer tubes (23a) being connected through piping to the refrigerant circuit for air temperature adjustment, and the remaining two inner tubes serve as heat transfer tubes (23b) for a refrigerant for hot-water supply, the heat transfer tubes (23b) being connected to the refrigerant circuit for hot-water supply. The heat transfer tubes (23a) for a refrigerant for air temperature adjustment and the heat transfer tubes (23b) for a refrigerant for hot-water supply are joined to each other at a joint section (101).
Inventors:
KOKUGAN, Yoko (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
國眼 陽子 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
ENDOH, Kazuhiro (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
國眼 陽子 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
ENDOH, Kazuhiro (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
Application Number:
JP2010/063563
Publication Date:
April 21, 2011
Filing Date:
August 10, 2010
Export Citation:
Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
株式会社 日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
KOKUGAN, Yoko (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
國眼 陽子 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
株式会社 日立製作所 (〒80 東京都千代田区丸の内一丁目６番６号 Tokyo, 〒1008280, JP)
KOKUGAN, Yoko (HITACHI LTD., 832-2, Horiguchi, Hitachinaka-sh, Ibaraki 34, 〒3120034, JP)
國眼 陽子 (〒34 茨城県ひたちなか市堀口８３２番地２ 株式会社日立製作所 機械研究所内 Ibaraki, 〒3120034, JP)
International Classes:
F28D7/10; F24H1/00; F25B29/00
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (Kashiwaya Bldg, 6-13 Nishishinbashi 1-chom, Minato-ku Tokyo 03, 〒1050003, JP)
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