US 9,518,782 B2Granted

Heat exchanger

AssigneeAlfa Laval Corporated AB

InventorsFredrik Blomgren, Martin Holm, Tomas Kovacs

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Abstract

The invention refers to a plate heat exchanger where the heat exchanger comprises a first flow channel between a first plate and a second plate, and where the flow channel comprises a lower distribution passage, a heat transfer passage and an upper distribution passage, where the heat transfer passage is vertically divided in a lower and an upper heat transfer passage and where the lower heat transfer passage is horizontally divided in a plurality of adjacent heat transfer zones, where the intermediate angle between the ridges and grooves in any of the heat transfer zones of the lower heat transfer passage is at least 30° larger than the intermediate angle of the ridges and grooves of the upper heat transfer passage. The advantage of the invention is that an improved heat exchanger is provided, having an increased thermal performance and an improved evaporation capacity.

Claims12

Dependent claims

A heat exchanger plate for use in a heat exchanger, the heat exchanger plate comprising:

a lower distribution area including port holes;
a heat transfer area;
an upper distribution area including port holes;
a corrugated pattern of ridges and grooves in the heat transfer area, the ridges and grooves in the corrugated pattern being oriented at an angle measured with relation to a vertical axis of the heat exchanger plate;
wherein the heat transfer area is vertically divided into a lower heat transfer area and an upper heat transfer area;
wherein the lower heat transfer area is horizontally divided into a plurality of adjacent heat transfer sections wherein the smallest angle of the ridges and grooves amongst all of the heat transfer sections in the lower heat transfer area is at least 15° larger than the angle of the ridges and grooves of the upper heat transfer area;
the plate including a plurality of spaced apart surface portions in the lower distribution area, each surface portion in the lower distribution area being bounded by two adjacent ridges in the lower distribution area and two adjacent grooves in the lower distribution area, the entirety of each of the surface portions lying in a common neutral plane;
wherein the depth of each of a plurality of the grooves in the lower distribution area compared with the neutral plane is larger than the height of each of a plurality of the ridges in the lower distribution area compared with the neutral plane;
and
wherein the direction of the ridges and grooves in each of the heat transfer sections differs from an adjacent heat transfer section in the lower heat transfer area.

7 more elements

A heat exchanger plate for use in a heat exchanger, the heat exchanger plate comprising:

a lower distribution area including port holes;
a heat transfer area;
an upper distribution area including port holes;
a corrugated pattern of ridges and grooves, the ridges and grooves in the corrugated pattern being oriented at an angle measured with relation to a vertical axis of the heat exchanger plate;
wherein the heat transfer area is vertically divided into a lower heat transfer area and an upper heat transfer area;
wherein the lower heat transfer area is horizontally divided into a plurality of adjacent heat transfer sections wherein the smallest angle of the ridges and grooves amongst all of the heat transfer sections in the lower heat transfer area is at least 15° larger than the angle of the ridges and grooves of the upper heat transfer area;
the plate including a plurality of spaced apart surface portions in the upper distribution area, each surface portion in the upper distribution area being bounded by two adjacent ridges in the upper distribution area and two adjacent grooves in the upper distribution area, the entirety of each of the surface portions lying in a common neutral plane;
wherein the height of each of a plurality of the ridges in the upper distribution area compared with the neutral plane is larger than the depth of each of a plurality of the grooves in the upper distribution area compared with the neutral plane in the upper distribution area;
and
wherein the direction of the ridges and grooves in each of the heat transfer sections differs from an adjacent heat transfer section in the lower heat transfer area.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/997,908Filed 26 May 2009
Priority: SE 0801417-717 Jun 2008
Published: US 2011/0139419 A116 Jun 2011
Granted: 13 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F28D 9/005
The plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another: the plates having openings…
F28F 3/046
In the form of local deformations of the element: the deformations being linear, e.g. corrugations
F28F 3/08
Plate-like or laminated elements; Assemblies of plate-like or laminated elements: elements constructed for building-up into stacks, e.g. capable…
F28F 3/083
Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning: capable of being taken apart

Family

US 2011/0139419 A1Pre-grant publication · published 16 Jun 2011
US 9,518,782 B2This patent

From the US filing history. Foreign family members aren’t listed.

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