Heat exchanger with collecting channel for discharging a liquid phase

Patent metadata

Field	Value
Publication number	US-2016290731-A1
Application number	US-201415037099-A
Country	US
Kind code	A1
Filing date	Dec 2, 2014
Priority date	Dec 5, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

A heat exchanger for indirectly exchanging heat between a first medium and a second medium, the heat exchanger having a casing enclosing an encased area for receiving the liquid phase of the first medium and at least one plate heat exchanger arranged in the encased area for receiving the first medium and the second medium. The plate heat exchanger is surrounded by the liquid phase of the first medium during operation. A collecting channel is located in the encased area in order to allow for discharge of part of the liquid phase of the first medium from the encased area.

First claim

1 . A heat exchanger for the indirect exchange of heat between a first medium and a second medium, with:
a casing, which, has an encased area for receiving a liquid phase of the first medium, and at least one plate heat exchanger, which has first heat transfer passages for receiving the first medium, together with second heat transfer passages for receiving the second medium, so that heat can indirectly be exchanged between the two media, wherein the plate heat exchanger is arranged in the encased area such that it can be surrounded with a liquid phase of the first medium located in the encased area, and a collecting channel arranged in the encased area for purposes of discharging the liquid phase of the first medium out of the encased area, characterised in that,
the collecting channel has a wall which defines an interior area of the collecting channel, and which, extended in the longitudinal direction, runs along a horizontal extension direction in the encased area.

2 . The heat exchanger in accordance with claim 1 , characterised in that the collecting channel is arranged in a lower region of the encased area.

3 . The heat exchanger in accordance with claim 1 , characterised in that the collecting channel arranged underneath the at least one plate heat exchanger, or between the casing and the at least one plate heat exchanger.

4 . The heat exchanger in accordance with claim 1 , characterised in that an upper region of the encased area, is designed for purposes of collecting a gaseous phase of the first medium, which in particular is generated in the course of the indirect exchange of heat between the first medium and the second medium.

5 . The heat exchanger in accordance with claim 1 , characterised in that the at least one plate heat exchanger is designed such that in the operation of the heat exchanger the first medium rises in the at least one plate heat exchanger, and the second medium is led through the at least one plate heat exchanger in counter-flow or cross-flow with respect to the first medium.

6 . The heat exchanger in accordance with claim 1 , characterised in that a number of plate heat exchangers are arranged in the encased area.

7 . The heat exchanger in accordance with claim 1 , characterised in that an interior area of the collecting channel, is connected with an outlet connecting pipe provided on the casing, such that the liquid phase of the first medium can be discharged from the encased area via the outlet connecting pipe.

8 . The heat exchanger in accordance with claim 1 , characterised in that the wall of the collecting channel runs along a lower face of the casing.

9 . The heat exchanger in accordance with claim 7 , characterised in that the outlet connecting pipe opens out centrally, with respect to the extension direction, into the interior area of the collecting channel.

10 . The heat exchanger in accordance with claim 7 , charactersied in that transverse to the extension direction, the interior area of the collecting channel has a cross-section that increases towards the outlet connecting pipe, such that a velocity field of the liquid phase of the first medium in the collecting channel is as uniform as possible, and the flow of the liquid phase of the first medium in the adjacent encased area is negatively influenced as little as possible.

11 . The heat exchanger in accordance with claim 1 , characterised in that the wall of the collecting channel has an upper face, and an opposing lower face, wherein the upper face and the lower face are connected with one another by means of side walls of the wall, which are located opposite one another.

12 . The heat exchanger in accordance with claim 1 , characterised in that a lower face of the wall, is formed by the casing.

13 . The heat exchanger in accordance with claim 11 , characterised in that the collecting channel has a number of inlet openings designed for purposes of the inflow of the liquid phase of the first medium into the collecting channel, wherein the inlet openings are formed in the upper face or in the side walls of the collecting channel, and wherein the number, distribution, size and shape of the inlet openings are chosen such that the velocity field of the liquid phase of the first medium in the collecting channel as uniform as possible, and the flow of the liquid phase of the first medium in the adjacent encased area is negatively influenced as little as possible.

14 . The heat exchanger in accordance with claim 7 , characterised in that the casing has a cylindrical wall running peripherally transverse to the extension direction, which wall connects two end face walls of the casing with one another.

15 . The heat exchanger in accordance with the claim 14 , characterised in that the outlet connecting pipe is arranged on a lower region of the cylindrical wall of the casing.

Assignees

• Linde Ag

Inventors

• Kayser Stefan
• Brenner Steffen

Classifications

• F28D21/0017

  Flooded core heat exchangers (in large body of fluid F28D1/0206) · CPC title

• F28D2021/0064

  Vaporizers, e.g. evaporators · CPC title

• F28D9/0006 Primary

  the plate-like or laminated conduits being enclosed within a pressure vessel · CPC title

• F28F9/005

  Other auxiliary members within casings, e.g. internal filling means or sealing means · CPC title

• F25J5/005 Primary

  in a reboiler-condenser, e.g. within a column · CPC title