Heat exchanger

Patent metadata

Field	Value
Publication number	US-11408688-B2
Application number	US-202016903526-A
Country	US
Kind code	B2
Filing date	Jun 17, 2020
Priority date	Jun 17, 2020
Publication date	Aug 9, 2022
Grant date	Aug 9, 2022

Abstract

A heat exchanger (1) includes a fluid collector (2) for receiving fluid, a multiphase distributor (3) for distributing fluid, a first flow path (4), and a plurality of multi-duct tubes (6), which each have a duct tube longitudinal axis (7) and which each lead into the multiphase distributor (3) and into the fluid collector (2) by forming an orifice (8, 9). A second flow path (5) leads respectively through the multi-duct tubes (6), the fluid collector (2), and the multiphase distributor (3), wherein the multi-duct tubes (6) extend through the first flow path (4) for the first fluid, so that the first fluid can flow around and the second fluid can flow through the multi-duct tubes (6).

First claim

What is claimed is:

1. A heat exchanger for coupling a first fluid to a second fluid so as to transfer heat in a fluidically separate manner, the heat exchanger comprising:
a fluid collector ( 2 ) for collecting fluid,
a multiphase distributor ( 3 ) for distributing fluid,
a first flow path ( 4 ) for the first fluid,
a plurality of multi-duct tubes ( 6 ), which each have a duct tube longitudinal axis ( 7 ) and which each lead into the multiphase distributor ( 3 ) via a distributor orifice ( 8 ) and into the fluid collector ( 2 ) via a collector orifice ( 9 ),
wherein a second flow path ( 5 ) for the second fluid extends through the multi-duct tubes ( 6 ), the fluid collector ( 2 ), and the multiphase distributor ( 3 ),
wherein the multi-duct tubes ( 6 ) extend through the first flow path ( 4 ) for the first fluid in a configuration to allow the first fluid to flow around the multi-duct tubes and to allow the second fluid to flow, in a hermetically sealed manner, through the multi-duct tubes ( 6 ), respectively;
wherein the fluid collector ( 2 ) has a cylindrical tubular body ( 10 ) located therein with a hollow interior for guiding the second fluid, wherein the tubular body ( 10 ) has a tubular-body longitudinal axis ( 11 ) and exactly two opening arrangements ( 12 , 14 , 16 ) forming a plurality of individual openings ( 13 ) penetrating the tubular body ( 10 ) transversely to the tubular-body longitudinal axis ( 11 ) and spaced apart from one another along the tubular-body longitudinal axis ( 11 );
wherein the two opening arrangements ( 12 , 14 , 16 ) are a first opening arrangement ( 12 , 14 ) and a second opening arrangement ( 12 , 16 ),
wherein the individual openings ( 13 ) of the first opening arrangement ( 12 , 14 ) are spaced apart from one another along the tubular-body longitudinal axis ( 11 ) by a first distance ( 15 ) measured from centers of adjacent ones of the individual openings of the first opening arrangement,
wherein the individual openings ( 13 ) of the second opening arrangement ( 12 , 16 ) are spaced apart from one another along the tubular-body longitudinal axis ( 11 ), by a second distance ( 17 ), measured from centers of adjacent ones of the individual openings of the second opening arrangement,
wherein the first distance ( 15 ) of the individual openings ( 13 ) of the first opening arrangement ( 12 , 14 ) is smaller than the second distance ( 17 ) of the individual openings ( 13 ) of the second opening arrangement ( 12 , 16 );
wherein each of the individual openings ( 13 ) of the first opening arrangement ( 12 , 14 ) has a first opening cross-section ( 32 ),
wherein each of the individual openings ( 13 ) of the second opening arrangement ( 12 , 16 ) has a second opening cross-section ( 33 ), the first opening cross-section ( 32 ) being smaller than the second opening cross-section ( 33 ); and

wherein, in the course of a heating operation ( 22 ) of the heat exchanger ( 1 ), during which heat is transferred from the second fluid to the first fluid, the fluid collector ( 2 ) is arranged in the second flow path ( 5 ) downstream from the multiphase distributor ( 3 ), and the heat exchanger is configured to pass the second fluid first through the multiphase distributor ( 3 ), then through the multi-duct tubes ( 6 ), and then through the fluid collector ( 2 ).

2. The heat exchanger according to claim 1 ,
wherein, in the course of a cooling operation ( 23 ) of the heat exchanger ( 1 ), during which heat is transferred from the first fluid to the second fluid, the fluid collector ( 2 ) is arranged in the second flow path ( 5 ) upstream of the multiphase distributor ( 3 ), and the heat exchanger is configured to pass the second fluid first through the fluid collector ( 2 ), then through the multi-duct tubes ( 6 ), and then through the multiphase distributor ( 3 ).

3. The heat exchanger according to claim 1 , wherein the tubular body ( 10 ) has a tubular-body cross-section which is c-shaped.

4. The heat exchanger according to claim 1 ,
wherein the first distance ( 15 ) is half as long as the second distance ( 17 ).

5. The heat exchanger according to claim 1 , wherein the first distance ( 15 ) of the individual openings ( 13 ) of the first opening arrangement ( 12 , 14 ) is between 49 mm and 59 mm, and wherein the second distance ( 17 ) of the individual openings ( 13 ) of the second opening arrangement ( 12 , 16 ) is between 98 mm and 118 mm.

6. The heat exchanger according to claim 1 , wherein the first cross-section defines a first opening area and the second cross-section defines a second opening area, the second opening area being twice as large as the first opening area.

7. The heat exchanger according to claim 1 , wherein the individual openings ( 13 ) of the first opening arrangement ( 12 , 14 ) each have an opening diameter between 4.26 mm and 5.26 mm, and wherein the individual openings ( 13 ) of the second opening arrangement ( 12 , 16 ) have opening diameters alternating between a first diameter of 4.26 mm to 5.26 mm and a second diameter of 5.75 mm to 6.95 mm, which alternate along the tubular-body longitudinal axis ( 11 ).

8. The heat exchanger according to claim 1 ,
wherein the duct tube longitudinal axes ( 7 ) of the multi-duct tubes ( 6 ) are aligned transverse to the tubular-body longitudinal axis ( 11 ) of the tubular body ( 10 ) of the fluid collector ( 2 ).

9. The heat exchanger according to claim 8 ,
wherein the duct tube longitudinal axes ( 7 ) of the multi-duct tubes ( 6 ) are aligned transverse to the distributor tubular-body longitudinal axis ( 19 ) of the distributor tubular body ( 18 ) of the multiphase distributor ( 3 ).

Assignees

• Mahle Int Gmbh

Inventors

• Kent Scott Edward

Classifications

• F28F9/0275 Primary

  with multiple branch pipes · CPC title

• F28F9/0282

  by varying the geometry of conduit ends, e.g. by using inserts or attachments for modifying the pattern of flow at the conduit inlet or outlet · CPC title

• F28F9/0273 Primary

  with multiple holes · CPC title

• F28F9/0263

  by varying the geometry or cross-section of header box · CPC title

• F28D2021/0068

  for refrigerant cycles · CPC title