(19)
(11) EP 3 447 426 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.06.2019 Bulletin 2019/25

(43) Date of publication A2:
27.02.2019 Bulletin 2019/09

(21) Application number: 18190764.3

(22) Date of filing: 24.08.2018
(51) International Patent Classification (IPC): 
F28D 7/10(2006.01)
F28F 1/30(2006.01)
F25B 39/00(2006.01)
F28D 21/00(2006.01)
 F28F 1/24(2006.01)
F28F 9/22(2006.01)
F28D 7/16(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 24.08.2017 JP 2017161271
25.08.2017 JP 2017162664

(71) Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
Minato-ku Tokyo 108-8215 (JP)

(72) Inventors:
  • MIZUNO, Yuichiro
    TOKYO, 108-8215 (JP)
  • KAI, Masakazu
    TOKYO, 108-8215 (JP)
  • HOKAZONO, Toshiyuki
    TOKYO, 108-8215 (JP)
  • JINNO, Hiroki
    TOKYO, 108-8215 (JP)

(74) Representative: Cabinet Beau de Loménie 
158, rue de l'Université
75340 Paris Cedex 07
75340 Paris Cedex 07 (FR)

   


(54) DOUBLE-PIPE HEAT EXCHANGER, HEAT EXCHANGE SYSTEM PROVIDED WITH SAME, AND METHOD FOR ASSEMBLING DOUBLE-PIPE HEAT EXCHANGER


(57) Provided is a double-pipe heat exchanger (30) that includes an inner pipe (31) including a plurality of plate fins (31a) and a refrigerant pipe (31b) which allows a condensed refrigerant to flow therethrough, an outer pipe (32) which allows an evaporated refrigerant to flow therethrough, and a plurality of partition plates (33) which are arranged in contact with an inner circumferential surface (32e) of the outer pipe (32) and which partition an inner space (S) of the outer pipe (32) into a plurality of divided spaces (S1, S2, S3, S4, S5), wherein the inner pipe (31) is arranged inside the outer pipe (32), the partition plates (33) each have formed therein an opening portion (33a) via which a pair of adjacent divided spaces are connected to each other, a partition plate (33) having the opening portion (33a) formed in an area excluding a vertically lower end of the inner space (S), has formed therein a cutout portion (33c) via which a pair of adjacent divided spaces that are connected, at the lower end, to each other, and the cutout portion (33c) has an opening area smaller than that of the opening portion (33a).







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