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Title:
HEAT EXCHANGER AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/199400
Kind Code:
A1
Abstract:
This heat exchanger has heat exchange parts that each comprise: a pair of headers which are arranged spaced apart from each other in a vertical direction, and through which a fluid passes into tubes; a plurality of flat heat transfer tubes that have a flat-shaped cross-section, that are arranged between the pair of headers such that flat surfaces on the longitudinal side of the flat shape are each spaced apart opposing each other, and that include a flow channel through which the fluid flows; and a plurality of corrugated fins that are wave-shaped, that are arranged between the opposing flat heat transfer tubes, that have wave-shaped apex sections joined to the flat heat transfer tubes and that are aligned in the vertical direction with fin sections respectively formed between the apex sections. The heat exchange parts are configured spaced apart and aligned in a plurality of columns along an airflow direction. Corrugated fins on a leeward side in the airflow direction have an outside-tube heat transfer coefficient greater than that of corrugated fins on a windward side in the airflow direction.

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Inventors:
ONAKA YOJI (JP)
ADACHI RIHITO (JP)
KISHIDA NANAMI (JP)
SAIKUSA TETSUJI (JP)
KATO YOHEI (JP)
KIBE ATSUSHI (JP)
Application Number:
PCT/JP2022/017586
Publication Date:
October 19, 2023
Filing Date:
April 12, 2022
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B39/02; F28D1/053; F28F1/30
Domestic Patent References:
WO2021095087A12021-05-20
WO2016013100A12016-01-28
Foreign References:
JPH06221787A1994-08-12
JP2009150621A2009-07-09
JP2004271113A2004-09-30
JPS629197A1987-01-17
JPS5866287U1983-05-06
JPH06147785A1994-05-27
JP2010532859A2010-10-14
JP2010181140A2010-08-19
JPS5551446U1980-04-04
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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