(19)
(11) EP 2 650 633 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.04.2018 Bulletin 2018/15

(43) Date of publication A2:
16.10.2013 Bulletin 2013/42

(21) Application number: 13160236.9

(22) Date of filing: 20.03.2013
(51) International Patent Classification (IPC): 
F28D 9/00(2006.01)
F25B 43/02(2006.01)
 F28F 3/04(2006.01)
F25B 39/04(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

(30) Priority: 12.04.2012 JP 2012091375

(71) Applicant: Mitsubishi Electric Corporation
Chiyoda-ku Tokyo 100-8310 (JP)

(72) Inventor:
  • Uchino, Shinichi
    Tokyo, 100-8310 (JP)

(74) Representative: Pfenning, Meinig & Partner mbB 
Patent- und Rechtsanwälte Theresienhöhe 11a
80339 München
80339 München (DE)

   


(54) Plate-type heat exchanger, method of manufacturing the same, and heat pump device


(57) To guide lubricating oil flowing into a plate-type heat exchanger to an oil-recovery port, while minimizing the amount of lubricating oil trapped therein.
A plate-type heat exchanger includes: a plate assembly 120 that is a plate stacked body including a stack of a plurality of heat-transfer plates 100; an inlet port and an outlet port for refrigerant 7 provided in the plate assembly 120; an inlet port and an outlet port for water 10 provided in the plate assembly 120; and an oil-recovery port 103e from which lubricating oil 8 contained in the refrigerant 7 is extracted, the oil-recovery port 103e being provided below the outlet port for the refrigerant 7 provided in the lower part of the plate assembly 120. Oil recovery holes 200 communicating with the oil-recovery port 103e are provided at the lower part inside the plate assembly 120, and a flow-smoothing embossed portion 201 is provided on each heat-transfer plate 100 so that the lubricating oil 8 smoothly flows toward the oil recovery hole 200.










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