Heat exchanger unit

Patent metadata

Field	Value
Publication number	US-9551533-B2
Application number	US-201313944432-A
Country	US
Kind code	B2
Filing date	Jul 17, 2013
Priority date	Jul 17, 2012
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A heat exchanger unit includes a heat exchanger main body in which a first heat exchanger and a second heat exchanger are arranged in series relative to a refrigerant flowing direction and an air flowing direction. The heat exchanger main body includes on one side thereof an external connection portion configured to supply at least refrigerant and on the other side thereof a communicating portion configured to connect (allowing fluid communication between) the first heat exchanger and the second heat exchanger. A bypass flow path extends from the one side to the other side of the heat exchanger main body, and is configured to bypass the first heat exchanger. At least one of the first heat exchanger and the second heat exchanger includes a pair of tank sections disposed at an interval, and a plurality of first heat transfer tubes configured to connect the pair of tank sections.

First claim

What is claimed is:

1. A heat exchanger unit comprising:
a heat exchanger main body including:
a first heat exchanger;
a second heat exchanger arranged in series with the first heat exchanger relative to a refrigerant flowing direction and an air flowing direction;
an external connection portion on a first side of the heat exchanger main body, the external connection portion being configured to supply refrigerant;
a communicating portion on a second side of the heat exchanger main body, the communicating portion being configured to connect the first heat exchanger and the second heat exchanger so as to allow the first heat exchanger and the second heat exchanger to communicate with each other; and
a bypass flow path extending from the first side of the heat exchanger main body to the second side of the heat exchanger main body, the bypass flow path being configured to bypass the first heat exchanger so to supply the refrigerant from the external connection portion directly to the second heat exchanger;

wherein at least one of the first heat exchanger and the second heat exchanger includes a pair of tank sections spaced apart at an interval, and a plurality of first heat transfer tubes configured to connect the pair of tank sections,
wherein the bypass flow path includes a bypass tube disposed along at least one of the pair of tank sections on the first side of the heat exchanger main body, and the bypass flow path further includes a second heat transfer tube formed of a heat transfer tube located at the communicating portion of the first heat exchanger or the second heat exchanger partitioned from other portions of the first heat exchanger or the second heat exchanger, and
wherein the external connection portion and the communicating portion are disposed on the first tank section side and the second tank section side of a pair of the tank sections, respectively.

2. The heat exchanger unit according to claim 1 , wherein at least one of the first heat exchanger and the second heat exchanger is a drawn-cup type heat exchanger including plurality of laminated plates, all but one of the plurality of laminated plates including a convex opening portion constituting a part of the tank section and a concave groove portion constituting a part of the first heat transfer tube, the plurality of laminated plates being laminated and fixed, and
wherein the second heat transfer tube is partitioned from the other portions of the first heat exchanger or the second heat exchanger by forming a convex closed portion in one of the laminated plates instead of the convex opening portion.

3. The heat exchanger unit according to claim 1 , wherein the external connection portion and the communicating portion are disposed on the first tank section side of a pair of the tank sections.

4. The heat exchanger unit according to claim 1 , wherein the first heat transfer tube and the second heat transfer tube have the same cross-sectional shape.

5. The heat exchanger unit according to claim 1 , wherein the second heat transfer tube is installed in the first heat exchanger or in the second heat exchanger, the second heat exchanger being located on a leeward side of the heat exchange unit.

Assignees

• Calsonic Kansei Corp

Inventors

• Maruyama Tomohiro
• Kawamata Toru
• Kamimura Satoshi

Classifications

• F28D1/0435

  Combination of units extending one behind the other (F28D1/0452 takes precedence) · CPC title

• F28F2250/06

  Derivation channels, e.g. bypass · CPC title

• F28D1/0341

  with U-flow or serpentine-flow inside the conduits · CPC title

• F28D1/05341

  with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators · CPC title

• F28D1/0417 Primary

  with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures · CPC title