Title:
HEAT EXCHANGER AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/119468
Kind Code:
A1
Abstract:
This heat exchanger is provided with: a plurality of heat transfer pipes arranged vertically at an interval; a first distributor that is formed so as to extend vertically and distributes a refrigerant to the plurality of heat transfer pipes. The first distributor has: an insertion surface part through which the plurality of heat transfer pipes are inserted; an opposite surface part that is opposite to the insertion surface part in a direction in which the plurality of heat transfer pipes extend; a lateral surface part that is a wall extending between the insertion surface part and the opposite surface part in an axially-perpendicular cross-section, being a perpendicular cross-section relative to the longitudinal direction of the first distributor, and that is joined to the opposite surface part. The opposite surface part has: a flat-plate portion connected to the lateral surface part; and a swelling-expansion portion that is formed such that a portion of an inner wall forming the internal space of the first distributor swellingly expands from the flat-plate portion toward the insertion surface part, in the axially-perpendicular cross-section. The first distributor is configured such that, in the axially-perpendicular cross-section, when the minimum distance from the the leading ends of the plurality of the heat transfer pipes to the swelling-expansion portion is defined as a first distance M1 and the distance from the leading ends of the plurality of heat transfer pipes in the extension direction of the plurality of heat transfer pipes to the position of the flat-plate portion is defined as a second distance M2, the relationship of second distance M2 ≥ 1.5×first distance M1 is satisfied.
Inventors:
AKAIWA RYOTA (JP)
ONAKA YOJI (JP)
ADACHI RIHITO (JP)
MATSUO YOSHIHIKO (JP)
MATSUMOTO TAKEMI (JP)
MIYAKAWA KODAI (JP)
OTANI YUKI (JP)
KATO YOHEI (JP)
SATO YUTA (JP)
ONAKA YOJI (JP)
ADACHI RIHITO (JP)
MATSUO YOSHIHIKO (JP)
MATSUMOTO TAKEMI (JP)
MIYAKAWA KODAI (JP)
OTANI YUKI (JP)
KATO YOHEI (JP)
SATO YUTA (JP)
Application Number:
PCT/JP2021/047498
Publication Date:
June 29, 2023
Filing Date:
December 22, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F28F9/02; F28D1/053
Domestic Patent References:
| WO2019207838A1 | 2019-10-31 |
Foreign References:
| JP2011085343A | 2011-04-28 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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