Heat transfer plate and a plate pack for a heat exchanger comprising a plurality of such heat transfer plates

Patent metadata

Field	Value
Publication number	US-11774191-B2
Application number	US-201816753098-A
Country	US
Kind code	B2
Filing date	Sep 11, 2018
Priority date	Oct 5, 2017
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A heat transfer plate comprises first, third and fourth guiding sections. The first and fourth guiding sections each comprise, as seen from a first side of the heat transfer plate, a male projection to engage the first adjacent heat transfer plate for aligning the plate and the first adjacent heat transfer plate, and, as seen from a second side of the heat transfer plate, a female recess to engage the second adjacent heat transfer plate for aligning the plate and the second adjacent heat transfer plate. The third guiding section comprises, as seen from the second side of the plate, a male projection to engage the second adjacent heat transfer plate for aligning the plate and the second adjacent plate, and, as seen from the first side of the plate, a female recess to engage the first adjacent heat transfer plate for aligning the plate and the first adjacent plate.

First claim

The invention claimed is:

1. A heat transfer plate having opposing first and second sides, an outer edge and a central extension plane, the heat transfer plate having a heat transfer area provided with a heat transfer pattern configured to effect heat transfer between two fluids flowing on opposite sides of the heat transfer plate, the heat transfer pattern having an outermost periphery at which the heat transfer pattern terminates, the heat transfer plate also including an edge portion extending around the outer edge of the heat transfer plate, the edge portion comprising corrugations extending between first and second planes which are parallel to the central extension plane, the corrugations of the edge portion terminating at an innermost periphery of the edge portion, the innermost periphery of the edge portion being spaced from the outermost periphery of the heat transfer pattern, the central extension plane being arranged between the first and second planes, the corrugations being arranged, at the first side of the heat transfer plate, to abut a first adjacent heat transfer plate, and at the second side of the heat transfer plate, to abut a second adjacent heat transfer plate, when the heat transfer plate is arranged in a plate heat exchanger, wherein longitudinal and transverse centre axes of the heat transfer plate, which extend parallel to the central extension plane and perpendicular to each other, define a first, a second, a third and a fourth plate area, wherein the first and second plate areas are arranged on the same side of the transverse centre axis and the first and the third plate areas are arranged on the same side of the longitudinal centre axis, wherein the first, third and fourth plate areas comprise a first, third and fourth guiding section, respectively, the first and fourth guiding sections each comprise, as seen from the first side of the heat transfer plate, a male projection projecting beyond the first plane and arranged to engage with the first adjacent heat transfer plate for alignment of the heat transfer plate and the first adjacent heat transfer plate, and, as seen from the second side of the heat transfer plate, a female recess arranged to engage with the second adjacent heat transfer plate for alignment of the heat transfer plate and the second adjacent heat transfer plate, and the third guiding section comprises, as seen from the second side of the heat transfer plate, a male projection projecting beyond the second plane and arranged to engage with the second adjacent heat transfer plate for alignment of the heat transfer plate and the second adjacent heat transfer plate, and, as seen from the first side of the heat transfer plate, a female recess arranged to engage with the first adjacent heat transfer plate for alignment of the heat transfer plate and the first adjacent heat transfer plate.

2. A heat transfer plate according to claim 1 , wherein the second plate area comprises a second guiding section comprising, as seen from the second side of the heat transfer plate, a male projection projecting beyond the second plane and arranged to engage with the second adjacent heat transfer plate for alignment of the heat transfer plate and the second adjacent heat transfer plate, and, as seen from the first side of the heat transfer plate, a female recess arranged to engage with the first adjacent heat transfer plate for alignment of the heat transfer plate and the first adjacent heat transfer plate.

3. A heat transfer plate according to claim 2 , wherein a top of the male projections of the first and second guiding sections extend from a distance ML 1 to a distance ML 2 from the transverse centre axis and from a distance MW 1 to a distance MW 2 from the longitudinal centre axis, and an opening of the female recesses of the third and fourth guiding sections extend from a distance FL 1 to a distance FL 2 from the transverse centre axis and from a distance FW 1 to a distance FW 2 from the longitudinal centre axis, wherein FL 1 <ML 1 <ML 2 <FL 2 and FW 1 <MW 1 <MW 2 <FW 2 , and the male projections of the first and second guiding sections fit into the female recesses of the third and fourth guiding sections.

4. A heat transfer plate according to claim 2 , wherein a top of the male projections of the third and fourth guiding sections) extend from a distance ML 3 to a distance ML 4 from the transverse centre axis and from a distance MW 3 to a distance MW 4 from the longitudinal centre axis, and an opening of the female recesses of the first and second guiding sections extend from a distance FL 3 to a distance FL 4 from the transverse centre axis and from a distance FW 3 to a distance FW 4 from the longitudinal centre axis, wherein FL 3 <ML 3 <ML 4 <FL 4 and FW 3 <MW 3 <MW 4 <FW 4 , and the male projections of the third and fourth guiding sections fit into the female recesses of the first and second guiding sections.

5. A heat transfer plate according to claim 2 , wherein the first and fourth guiding sections each comprise a first plane portion extending between the outer edge of the heat transfer plate and the male projection and parallel to the central extension plane, and the second and third guiding sections each comprise a second plane portion extending between the outer edge of the heat transfer plate and the male projection and parallel to the central extension plane.

6. A heat transfer plate according to claim 2 , wherein the first and fourth guiding sections each comprise a second plane portion extending between the outer edge of the heat transfer plate and the female recess and parallel to the central extension plane, and the second and third guiding sections each comprise a first plane portion extending between the outer edge of the heat transfer plate and the female recess and parallel to the central extension plane.

7. A heat transfer plate according to claim 5 , wherein the first and second plane portions extend in the first and the second plane, respectively, of the heat transfer plate.

8. A heat transfer plate according to claim 5 , wherein, as seen from the first side of the heat transfer plate, two reinforcement recesses, in relation to the first plane portions, are arranged on opposite sides of each of the first plane portions and two reinforcement projections, in relation to the second plane portions, are arranged on opposite sides of each of the second plane portions.

9. A heat transfer plate according to claim 2 , wherein the first, second, third and fourth guiding sections are arranged at a respective one of four corners of the heat transfer plate.

10. A heat transfer plate according to claim 2 , comprising two opposing long sides extending parallel to the longitudinal centre axis and two opposing short sides extending parallel to the transverse centre axis, wherein, within each of the first, second, third and fourth guiding sections, the female recess and the male projection are arranged on opposite sides of an imaginary straight line extending with an angle of 45 degrees in relation to one of the long sides and one of the short sides of the heat transfer plate.

11. A heat transfer plate according to claim 2 , wherein a depth of the female recesses of the third and fourth guiding sections is ≥a height of the male projections of the first and second guiding sections, and a depth of the female recesses of the first and second guiding sections is ≥a height of the male projections of the third and fourth guiding sections.

12. A heat transfer plate according to claim 2 , wherein at least one of the male projections of the first and second guiding sections and at least one of the female recesses of the third and fourth guiding sections have an at lea

Assignees

• Alfa Laval Corp Ab

Inventors

• Nilsson Johan
• Hedberg Magnus

Classifications

• F28F3/08 Primary

  Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning · CPC title

• F28D9/005

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

• F28F3/083 Primary

  capable of being taken apart · CPC title

• F28F2280/04

  Means for preventing wrong assembling of parts · CPC title