Heat exchanger and air-conditioner

Patent metadata

Field	Value
Publication number	US-11236954-B2
Application number	US-201916513766-A
Country	US
Kind code	B2
Filing date	Jul 17, 2019
Priority date	Jan 25, 2017
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

A heat exchanger including multiple fins, multiple heat transfer pipes having an oval shape or a flat shape and joined to the fins, and a header connected, on one end side, to an end portion of an inlet pipe through which working fluid flows in upon evaporation operation and connected, on the other end side, to an end portion of each of the heat transfer pipes, wherein the header includes a longitudinal partition plate arranged to extend in a longitudinal direction and configured to divide an internal space of the header into an inlet-pipe-side space connected to the end portion of the inlet pipe and a heat-transfer-pipe-side space connected to the end portion of each of the heat transfer pipes, and an opening is formed at a position not overlapping with the inlet pipe at the longitudinal partition plate.

First claim

What is claimed is:

1. A heat exchanger comprising:
multiple fins, each fin being planar and each having a main planar face extending in a longitudinal direction;
multiple heat transfer pipes joined to the fins and having an oval shape or a flat shape in cross-section; and
a header connected, on one end side, to a cylindrical end portion of an inlet pipe, and the header is connected, on another end side, which is an opposite side to the end side, to respective end portions of each of the heat transfer pipes,
wherein the header includes a longitudinal partition plate that is parallel to each main planar face of each of the multiple fins and is configured to divide an internal space of the header into an inlet-pipe-side space connected to the end portion of the inlet pipe and a heat-transfer-pipe-side space connected to the respective end portions of each of the heat transfer pipes,
wherein the end portion of the inlet pipe is spaced from the longitudinal partition plate, and
wherein an opening is disposed in the longitudinal partition plate and a projection of the axis of the cylindrical end portion of the inlet pipe does not intersect with the opening.

2. The heat exchanger according to claim 1 ,
wherein the opening extends from a bottom portion of the longitudinal partition plate to a top portion of the longitudinal plate on a side of the longitudinal partition plate that is on an opposite side than a side facing the end portion of the inlet pipe.

3. The heat exchanger according to claim 1 ,
wherein the projection of the axis of the cylindrical end portion of the inlet pipe intersects with a heat transfer pipe, from among the multiple heat transfer pipes, that is arranged at the highest position from among the multiple heat transfer pipes.

4. The heat exchanger according to claim 1 ,
wherein an upper end of the opening is at a position higher than that of a heat transfer pipe, from among the multiple heat transfer pipes, that is arranged at the highest position from among the multiple heat transfer pipes.

5. The heat exchanger according to claim 1 , wherein
the opening includes multiple vertically-elongated holes or multiple circular holes.

6. The heat exchanger according to claim 1 ,
wherein the header further includes a lateral partition plate that is orthogonal to the longitudinal partition plate in the inlet-pipe-side space and the heat-transfer-pipe-side space inside the header and that is configured to divide the internal space of the header into an upper space and a lower space.

7. The heat exchanger according to claim 6 , wherein
multiple lateral partition plates are arranged in each of the inlet-pipe-side space and the heat-transfer-pipe-side space.

8. The heat exchanger according to claim 6 , wherein
a working fluid flow path is formed at the lateral partition plate arranged in the inlet-pipe-side space.

9. The heat exchanger according to claim 1 ,
wherein the longitudinal partition plate has two shorter sides and two or more longer sides crossing in an inclined state with respect to the vertical direction and has a longer width than that of each of the shorter sides, and
wherein the header further includes a lateral partition plate arranged to extend laterally or to extend diagonally in the inlet-pipe-side space and in the heat-transfer-pipe-side space inside the header and configured to divide the internal space of the header into an upper space and a lower space.

10. The heat exchanger according to claim 9 , wherein
multiple lateral partition plates are arranged in each of the inlet-pipe-side space and the heat-transfer-pipe-side space.

11. The heat exchanger according to claim 9 , wherein
the lateral partition plate arranged in the inlet-pipe-side space has a shorter length than the width of each shorter side of the longitudinal partition plate, and is joined to the longitudinal partition plate at a position nearer the longer side in the direction of gravitational force from among the two or more long sides.

12. The heat exchanger according to claim 9 , wherein
the opening is formed to extend diagonally in an upper-to-lower direction at a position nearer the longer side on an opposite side of the direction of gravitational force from among the two or more long sides.

Assignees

• Hitachi Johnson Controls Air Conditioning Inc

Inventors

• Takafuji Ryoichi

Classifications

• F25B39/00 Primary

  Evaporators; Condensers · CPC title

• F25B13/00

  Compression machines, plants or systems, with reversible cycle (defrosting cycles F25B47/02) · CPC title

• F28F1/32

  the means having portions engaging further tubular elements · CPC title

• F28F9/028

  by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels · CPC title

• F28D1/0417

  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