Header box and heat exchanger

Patent metadata

Field	Value
Publication number	US-11624565-B2
Application number	US-201916964926-A
Country	US
Kind code	B2
Filing date	May 24, 2019
Priority date	May 25, 2018
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A header box includes a first bottom plate and an unperforated cover plate. The first bottom plate includes a first surface and a second surface opposite to the first surface. The first bottom plate is of a one-piece configuration. The first surface is recessed inwardly to form a straight first hole extending along a length direction. The second surface is recessed inwardly to form at least two straight second holes extending along a width direction perpendicular to the length direction. The first hole is communicated with the at least two second holes. The cover plate is connected to the first surface to block an opening of the first hole on the first surface. A heat exchanger having the header box is also disclosed.

First claim

What is claimed is:

1. A heat exchanger, comprising:
a casing comprising a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall being opposite to the third side wall, the second side wall being opposite to the fourth side wall, the first side wall, the second side wall, the third side wall and the fourth side wall being enclosed to form a chamber, the casing further comprising an inlet external pipe and an outlet external pipe which are in communication with the chamber, the inlet external pipe being configured for a second heat exchange medium to flow into the chamber, and the outlet external pipe being configured for the second heat exchange medium to flow out of the chamber;
a core at least partially accommodated in the chamber, the core comprising flat tubes for circulating a first heat exchange medium; and
a first header box comprising:
a first bottom plate comprising a first surface and a second surface opposite to the first surface, the first bottom plate being of a one-piece configuration, the first surface being at least partially recessed inwardly to form at least one straight first hole which extends along a length direction of the first bottom plate, the second surface being at least partially recessed inwardly to form at least two straight second holes which extend along a width direction of the first bottom plate, and the length direction being perpendicular to the width direction;
wherein the first hole is communicated with the at least two second holes, so that fluid flowing through the first hole is capable of being distributed to the at least two second holes, or fluid flowing through the second holes is capable of being collected to the first hole; and
an unperforated cover plate which is connected to the first surface to block an opening of the first hole on the first surface;
wherein the first header box comprises a second bottom plate, the first bottom plate is sandwiched by the cover plate and the second bottom plate, the second bottom plate defines a plurality of straight third holes in communication with the second holes, each third hole extends along the width direction, the plurality of third holes are separated from one another along the length direction;
wherein the heat exchanger further comprises a second header box, and the first header box and the second header box are disposed at opposite ends of the casing, respectively; the second header box comprises:
another cover plate provided with a plurality of grooves of which each extends along the length direction;
a third plate connected to the another cover plate, the third plate defining a plurality of straight first hole portions which are separated from one another along the length direction, each first hole portion extending along the width direction; and
a fourth plate connected to the third plate, the third plate being sandwiched by the another cover plate and the fourth plate, the fourth plate defining a plurality of straight second hole portions which are separated from one another along the length direction, each second hole portion extending along the width direction;

wherein corresponding first hole portions and corresponding second hole portions are in communication with each other so as to form a plurality of fourth holes; and
wherein one side of each flat tube is inserted into the third hole of the second bottom plate and another side of each flat tube is inserted into the fourth hole.

2. The heat exchanger according to claim 1 , wherein a plurality of the first holes are provided, each of the first holes extends along the length direction of the first bottom plate, each adjacent two first holes are separated from each other along the width direction by a straight partition wall integrally formed with the first bottom plate, and the straight partition wall extends along the length direction and has a same length as each first hole along the length direction.

3. The heat exchanger according to claim 1 , wherein the first bottom plate is thicker than any one of the cover plate and the second bottom plate along a thickness direction perpendicular to the length direction and the width direction.

4. The heat exchanger according to claim 1 , wherein the another cover plate comprises a partition provided in the grooves to separate the grooves into a first chamber and a second chamber, the first chamber and the second chamber are not in direct communication with each other, the first chamber and the second chamber are distributed along the length direction, so that the flat tubes are divided into a first tube group which is in communication with the first chamber and an interior of the first header box, and a second tube group which is in communication with the second chamber and the interior of the first header box.

5. The heat exchanger according to claim 4 , further comprising a first header fixed to one side of the second header box and a second header fixed to another side of the second header box, the first header comprising a first header hole in communication with the first chamber and a first inlet for the first heat exchange medium to flow into the first chamber, and the second header comprising a second header hole in communication with the second chamber and a first outlet for the first heat exchange medium to flow out of the second chamber.

6. The heat exchanger according to claim 5 , wherein both the first header and the second header extend along the width direction, and both the inlet external pipe and an outlet external pipe extend along the length direction.

7. The heat exchanger according to claim 1 , wherein the first side wall, the second side wall, the third side wall and the fourth side wall are integrally formed.

8. The heat exchanger according to claim 1 , wherein the inlet external pipe is fixed to the third side wall, the outlet external pipe is fixed to the first side wall, and the inlet external pipe is located lower than the outlet external pipe so that the second heat exchange medium requires to overcome gravity when the second heat exchange medium flows from the inlet external pipe to the outlet external pipe.

9. A heat exchanger, comprising:
a casing comprising a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall being opposite to the third side wall, the second side wall being opposite to the fourth side wall, the first side wall, the second side wall, the third side wall and the fourth side wall being enclosed to form a chamber, the casing further comprising an inlet external pipe and an outlet external pipe which are in communication with the chamber, the inlet external pipe being configured for a second heat exchange medium to flow into the chamber, and the outlet external pipe being configured for the second heat exchange medium to flow out of the chamber;
a core at least partially accommodated in the chamber, the core comprising flat tubes for circulating a first heat exchange medium; and
a first header box comprising:
a first bottom plate comprising a first surface and a second surface opposite to the first surface, the first bottom plate being of a one-piece configuration, the first surface being at least partially recessed inwardly to form at least one straight first hole which extends along a length direction of the first bottom plate, the second surface being at least partially recessed inwardly to form at least two straight second holes which extend along a width direction of the first bottom plate, and the length direction being perpendicular to the width direction;
wherein the first hole is communicated with the at least two second holes, so that fluid flowing through the first hole is capable of being distribu

Assignees

• Hangzhou Sanhua Res Inst Co Ltd

Inventors

• Dong Junqi
• Gao Jianhua
• Geng Shijiang
• Fan Xuebin

Classifications

• F28F9/0204

  for elongated header box, e.g. with transversal and longitudinal partitions · CPC title

• B60H1/00335

  of the gas-air type (B60H1/18 takes precedence) · CPC title

• F28F9/0278

  in the form of stacked distribution plates or perforated plates arranged over end plates · CPC title

• F28D9/0093

  Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids · CPC title

• F28F9/02

  Header boxes; End plates · CPC title