Title:
HEAT EXCHANGER FOR VEHICLE AIR CONDITIONING DEVICE, AND VEHICLE AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/108648
Kind Code:
A1
Abstract:
A heat exchanger for a vehicle air conditioning device has: fins (1) which are arranged parallel to each other; and heat transfer pipes which penetrate through the fins (1), are parallel to each other, and are arranged so as to form a staggered pattern on the surfaces of the fins (1). The fins (1) are formed by dividing, by means of a wave shaped cutting die (9), a band-shaped material (2) in which through-holes (3) through which the heat transfer pipes penetrate are formed. A stage pitch (Dp) satisfies the relationships of Dp = C + D + 2W + 2δ and 0 <δ < D + W, where C is the thickness of the cutting die (9), D is the outer diameter of the heat transfer pipes, W is the width of fin collar flanges (5) protruding outward from the peripheries of the front ends of the fin collars (4) of the through-holes (3), the fin collars (4) protruding from one side of the fins (1), and δ is the clearance between the cutting die (9) and each of the fin collar flanges (5).
Inventors:
UTO TAICHI (JP)
Application Number:
PCT/JP2013/050061
Publication Date:
July 25, 2013
Filing Date:
January 08, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
UTO TAICHI (JP)
UTO TAICHI (JP)
International Classes:
F28F1/32; B60H1/32; B61D27/00
Domestic Patent References:
| WO2010095419A1 | 2010-08-26 |
Foreign References:
| JPS5112063U | 1976-01-29 | |||
| JP2005007467A | 2005-01-13 | |||
| JPS6374983U | 1988-05-18 | |||
| JP2000274982A | 2000-10-06 |
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
Hisao Kobayashi (JP)
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Claims: