Condenser

Patent metadata

Field	Value
Publication number	US-10060658-B2
Application number	US-201314429911-A
Country	US
Kind code	B2
Filing date	Sep 2, 2013
Priority date	Sep 21, 2012
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

The invention relates to a condenser of stacked plate design, having a first flow channel for a refrigerant and a second flow channel for a coolant, wherein a plurality of plate elements is provided, which form channels adjacent to each other between the plate elements when the plate elements are stacked on top of each other.

First claim

The invention claimed is:

1. A condenser of stacked plate design comprising
a first flow channel for a refrigerant;
a second flow channel for a coolant;
a plurality of plate elements forming channels adjacent to each other between the plate elements when the plate elements are stacked on top of each other, wherein the first flow channel comprises a first subset of the channels, wherein the second flow channel comprises a second subset of the channels, wherein the plurality of plate elements are divided into a first region for desuperheating and condensing the vaporous refrigerant and a second region for subcooling the condensed refrigerant, wherein the first flow channel and the second flow channel flow through the first region and the second region;
a receiver for storing the refrigerant, wherein the refrigerant transfer from the first region to the second region leads through the receiver, wherein the receiver is in fluid communication with the first region using a first connection element forming a fluid inlet of the receiver, wherein the first connection element comprises a tube extending from the receiver and passing through openings in the plate elements of the second region, wherein the tube opens up into a plate element of the first region on one side and the receiver on the other side, wherein a second connection element is in fluid communication with the second region as a fluid outlet of the receiver,
wherein the second region forms an internal heat exchanger of stacked plate design having a third flow channel fluidically separate within condenser from the first flow channel and the second flow channel, wherein the refrigerant flows through the first flow channel and the third flow channel such that the refrigerant in the third channel cools the refrigerant in the first channel.

2. The condenser as claimed in claim 1 ,
wherein the first connection element is a channel, and the channel leads from the first region, through the second region, to the fluid inlet of the receiver, wherein the channel is in fluid communication only with the first region of the first flow channel.

3. The condenser as claimed in claim 2 , wherein the channel is a tube.

4. The condenser as claimed in claim 1 , wherein the second connection element is a channel, and the channel leads from the fluid outlet of the receiver, through the first region, into the second region.

5. The condenser as claimed in claim 1 , wherein the fluid inlet or fluid outlet of the second flow channel has a second tube, which is in fluid communication with a channel of the second subset of the channels of the second flow channel.

6. The condenser as claimed in claim 5 , wherein the channel of the second subset of flow channels of the second flow channel is one of the last channels of the second flow channel, which lies substantially opposite the insertion side of the tube in the plate stack.

7. The condenser as claimed in claim 1 , wherein the second flow channel allows flow in series, and the fluid inlet and the fluid outlet of the second flow channel are each arranged in the same end region of the plate stack.

8. The condenser as claimed in claim 1 , wherein the first flow channel has a third region, which follows the second region and is used to subcool the refrigerant, wherein the third region has a third flow channel for a fluid, wherein the first and the third flow channel are configured at least partially as the internal heat exchangers of stacked plate design.

9. The condenser as claimed in claim 8 , wherein the third flow channel is supplied with the refrigerant independently of the first flow channel or with a coolant independently of the second flow channel.

10. The condenser as claimed in claim 1 , wherein the receiver is in fluid communication only with the first region of the first flow channel via a tube which leads through part of the plate stack and forms the fluid inlet into the receiver, and the fluid outlet of the receiver is formed by another tube, which leads through part of the plate stack and is in fluid communication only with the second region of the first flow channel.

11. The condenser as claimed in claim 1 , wherein the fluid inlet or the fluid outlet of the internal heat exchanger is formed by a tube.

12. The condenser as claimed in claim 1 , wherein the plates have openings with or without a rim to produce or seal off a fluid connection between adjacent channels.

13. The condenser as claimed in claim 1 , wherein the tubes are passed through openings in the plate elements and are brazed to at least a subset of the plate elements.

14. The condenser as claimed claim 1 , wherein the first connection element is a tube and the second connection element is a flange or vice versa.

15. The condenser as claimed in claim 1 , wherein the receiver is designed to filter or dry the refrigerant.

16. The condenser as claimed in claim 1 , wherein second channel in the first region has a plurality of flow paths through which the fluid flows in succession and in which the flow direction is in each case alternately reversed.

17. The condenser as claimed in claim 1 , wherein second channel in the second region has a plurality of flow paths through which the fluid flows in succession and in which the flow direction is in each case alternately reversed.

18. A condenser of stacked plate design comprising
a first flow channel for a refrigerant;
a second flow channel for a coolant;
a plurality of plate elements forming channels adjacent to each other between the plate elements when the plate elements are stacked on top of each other, wherein the first flow channel comprises a first subset of the channels, wherein the second flow channel comprises a second subset of the channels, wherein the plurality of plate elements are divided into a first region for desuperheating and condensing the vaporous refrigerant and a second region for subcooling the condensed refrigerant, wherein the first flow channel and the second flow channel flow through the first region and the second region;
a receiver for storing the refrigerant, wherein a refrigerant transfer from the first region to the second region leads through the receiver, wherein the receiver is in fluid communication with the first region using a first connection element forming the fluid inlet of the receiver, wherein the first connection element comprises a tube extending from the receiver and passing through openings in the plate elements of the second region, wherein the tube opens up into a plate element of the first region on one side and the receiver on the other side, wherein the tube is in fluid communication only with the first region of the first flow channel and the receiver, wherein a second connection element is in fluid communication with the second region as a fluid outlet of the receiver,
wherein the second region forms an internal heat exchanger of stacked plate design having a third flow channel fluidically separate within condenser from the first flow channel and the second flow channel, wherein the refrigerant flows through the first flow channel and the third flow channel such that the refrigerant in the third channel cools the refrigerant in the first channel.

Assignees

• Mahle Int Gmbh

Inventors

• Hofmann Herbert
• Kaspar Martin
• Mager Thomas

Classifications

• F28D9/0056

  with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates · CPC title

• F25B39/00 Primary

  Evaporators; Condensers · CPC title

• F25B2339/043

  Condensers made by assembling plate-like or laminated elements · CPC title

• F28F9/26

  Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators (connecting different sections in water heaters F24H9/14 {, connecting headers with inlet or outlet fittings F28F9/0246}) · CPC title

• F28D9/0075

  the plates having openings therein for circulation of the heat-exchange medium from one conduit to another · CPC title