Heat exchanger

Patent metadata

Field	Value
Publication number	US-9400142-B2
Application number	US-200913127741-A
Country	US
Kind code	B2
Filing date	Oct 22, 2009
Priority date	Nov 12, 2008
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A heat exchanger plate, where the plate is provided with a heat transfer surface having a corrugated pattern, comprising a diagonal open and closed side distribution support section positioned between a diagonal open respectively closed groove and the heat transfer surface, and a diagonal open and closed side adiabatic support section positioned between the open respectively closed diagonal groove and a port hole, where the heat exchanger plate further comprises a transfer path between the diagonal open side distribution support section and the heat transfer surface and a bypass path between the diagonal closed side distribution support section and the heat transfer surface. A heat exchanger comprising a plurality of heat exchanger plates is also disclosed. The advantage of this heat exchanger plate is that it allows for heat exchangers with an improved efficiency.

First claim

The invention claimed is:

1. A heat exchanger plate possessing a lengthwise extent and comprising:
a heat transfer surface having a corrugated pattern with a plurality of ridges and valleys;
an open adiabatic distribution area positioned between a first port hole and the heat transfer surface;
a closed adiabatic area positioned between a second port hole and the heat transfer surface;
wherein the open adiabatic distribution area comprises a diagonal open side distribution support section positioned between a diagonal open groove and the heat transfer surface, and a diagonal open side adiabatic support section positioned between the open diagonal groove and the first port hole;
wherein the closed adiabatic area comprises a diagonal closed side distribution support section positioned between a diagonal closed groove and the heat transfer surface, and a diagonal closed side adiabatic support section positioned between the closed diagonal groove and the second port hole;
the heat exchanger plate further comprising a transfer path between the diagonal open side distribution support section and the heat transfer surface, and a bypass path between the diagonal closed side distribution support section and the heat transfer surface, the transfer and bypass paths delimiting the heat transfer surface;
wherein the bypass path possesses a width greater than a width of the transfer path;
wherein the heat exchanger plate possesses a longitudinal axis along the lengthwise extent of the heat exchanger plate that divides the heat exchanger plate into a first half and a second half, the bypass path being located in the first half of the heat exchanger plate, and the transfer path being located in the second half of the heat exchanger plate;
the bypass path arranged to feed fluid from the open adiabatic distribution area directly to the heat transfer surface within the first half of the heat transfer plate;
the transfer path arranged to feed fluid from the open adiabatic distribution area directly to the heat transfer surface within the second half of the heat transfer plate;
wherein the heat exchanger plate is a first heat exchanger plate configured to be stacked with a second heat exchanger plate possessing a bypass path and a transfer path, the bypass path of the second heat exchanger plate being wider than the transfer path of the second heat exchanger plate; and
the bypass path and the transfer path of the first heat exchanger plate being located such that when the first heat exchanger plate is stacked with the second heat exchanger plate, the bypass path of the first heat exchanger plate extends along the transfer path of the second heat exchanger plate, the transfer path of the first heat exchanger plate extends along the bypass path of the second heat exchanger plate, and the greater width of the bypass path of the first heat exchanger plate relative to the transfer path of the second heat exchanger plate creates a bypass passage between the bypass path of the first heat exchanger plate and the transfer path of the second heat exchanger plate so that fluid enters a heat transfer passage between the heat transfer surface of the first heat exchanger plate and the heat transfer surface of the second heat exchanger plate from the bypass passage with a pressure drop that is lower than if the bypass and transfer paths possessed equal widths.

2. The heat exchanger plate according to claim 1 , wherein the transfer path is closer to the first port hole than is the bypass path.

3. The heat exchanger plate according to claim 1 , wherein the transfer path and the bypass path have a height of half the pressing depth of the corrugated pattern.

4. The heat exchanger plate according to claim 1 , wherein the corrugated pattern of the heat transfer surface comprises straight longitudinal corrugations.

5. The heat exchanger plate according to claim 1 , wherein the corrugated pattern of the heat transfer surface has an angle of between 20 and 70 degrees in relation to the longitudinal axis of the plate.

6. A heat exchanger, comprising a plurality of heat exchanger plates according to claim 1 .

7. A plurality of heat exchanger plates comprising:
a first heat exchanger plate and a second heat exchanger plate, the first and second heat exchanger plates each possessing a lengthwise extent and comprising:
a heat transfer surface having a corrugated pattern with a plurality of ridges and valleys;
an open adiabatic distribution area positioned between a first port hole and the heat transfer surface;
a closed adiabatic area positioned between a second port hole and the heat transfer surface;
wherein the open adiabatic distribution area comprises a diagonal open side distribution support section positioned between a diagonal open groove and the heat transfer surface, and a diagonal open side adiabatic support section positioned between the open diagonal groove and the first port hole;
wherein the closed adiabatic area comprises a diagonal closed side distribution support section positioned between a diagonal closed groove and the heat transfer surface, and a diagonal closed side adiabatic support section positioned between the closed diagonal groove and the second port hole;
a transfer path between the diagonal open side distribution support section and the heat transfer surface, and a bypass path between the diagonal closed side distribution support section and the heat transfer surface, the transfer and bypass paths delimiting the heat transfer surface;
wherein the bypass path possesses a width greater than a width of the transfer path;
wherein each one of the first and second heat exchanger plates possesses a longitudinal axis along the lengthwise extent of the one of the first and second heat exchanger plates that divides the one of the first and second heat exchanger plates into a first half and a second half, the bypass path being located in the first half of the one of the first and second heat exchanger plates, and the transfer path being located in the second half of the one of the first and second heat exchanger plates;
the bypass path arranged to feed fluid from the open adiabatic distribution area directly to the heat transfer surface within the first half of the heat transfer plate; and
the transfer path arranged to feed fluid from the open adiabatic distribution area directly to the heat transfer surface within the second half of the heat transfer plate; and

the first heat exchanger plate being stacked with the second heat exchanger plate so that the bypass path of the first heat exchanger plate extends along the transfer path of the second heat exchanger plate, and the transfer path of the first heat exchanger plate extends along the bypass path of the second heat exchanger plate; and
the greater width of the bypass paths relative to the transfer paths creating a bypass passage between the bypass path of the first heat exchanger plate and the transfer path of the second heat exchanger plate so that fluid enters a heat transfer passage between the heat transfer surface of the first heat exchanger plate and the heat transfer surface of the second heat exchanger plate from the bypass passage with a pressure drop that is lower than if the bypass and transfer paths of the first and second heat exchanger plates possessed equal widths.

8. A heat exchanger plate possessing a transverse extent, a lengthwise extent, a horizontal axis along the transverse extent of the heat exchanger plate that divides the plate into an upper half and a lower half, and a longitudinal axis along the lengthwise extent of the heat exchanger plate that divides the heat exchanger plate into a first half and a second half, the heat exchanger plate comprising:
a heat transfer surface having a corrug

Assignees

• Holm Martin
• Ekelund Rolf
• Rasmussen Jenny
• Blomgren Fredrik
• Alfa Laval Corp Ab

Inventors

• Holm Martin
• Ekelund Rolf
• Rasmussen Jenny
• Blomgren Fredrik

Classifications

• F28F2250/06

  Derivation channels, e.g. bypass · CPC title

• F28F2215/04

  Assemblies of fins having different features, e.g. with different fin densities · CPC title

• F28D9/005 Primary

  the plates having openings therein for both heat-exchange media · CPC title

• F28F3/083

  capable of being taken apart · CPC title

• F28F3/046

  the deformations being linear, e.g. corrugations · CPC title