CN110418932B - Stacked plate for stacked plate heat exchanger and stacked plate heat exchanger - Google Patents
Stacked plate for stacked plate heat exchanger and stacked plate heat exchanger Download PDFInfo
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- CN110418932B CN110418932B CN201780071214.XA CN201780071214A CN110418932B CN 110418932 B CN110418932 B CN 110418932B CN 201780071214 A CN201780071214 A CN 201780071214A CN 110418932 B CN110418932 B CN 110418932B
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- stacked
- substantially flat
- flat base
- stacked plate
- plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The stacked plate includes: -a substantially flat base (2a) extending along a main plane, wherein a first passage opening (7) and a second passage opening (8) are provided for passing a first medium and a second medium, respectively, and-a raised edge (2b) protruding beyond the periphery of said substantially flat base (2a), continuously surrounding it. The first portion (2b1) and the second portion (2b2) of the raised edge (2b) protrude beyond the periphery of the base (2a) according to a first transverse angle (a) and a second transverse angle (μ) that are different from each other. The exchanger comprises a plurality of stacked plates (1) according to the invention, stacked and attached alternately one on top of the other.
Description
Technical Field
In a first aspect, the present invention relates to a stacked plate for a stacked plate heat exchanger, configured such that when stacked and connected to another stacked plate, interference problems between them are minimized or eliminated.
A second aspect of the invention relates to a stacked plate heat exchanger comprising a plurality of stacked plates according to the first aspect of the invention.
The invention is particularly suitable for heat exchangers (heating or cooling) in motor vehicles, in particular in TOC (transmission oil cooler) and EOC (engine oil cooler) applications.
Background
The existing configurations of oil coolers available on the market correspond to those of metal heat exchangers, which are usually made of stainless steel or aluminum. Most of the components of the oil cooler are metallic and assembled by mechanical means and then joined by welding or brazing to ensure the proper level of leakage required for the application.
The main function of an oil cooler is to exchange heat between two fluids, a coolant and oil. In addition to this, it must fulfill other functions, such as maintaining a low fluid pressure drop, withstanding the working conditions of the fluid, withstanding the environmental conditions, providing connections to the oil and coolant circuits, etc.
Market demand has increased in the need for more efficient and compact coolers that must be able to operate under more stringent conditions (e.g., higher oil pressure and higher temperatures).
Typically, an oil cooler includes a set of plates stacked alternately to allow circulation and prevent contact between fluids, seal two circuits, coolant circulation and oil circulation. In their manufacture, once the plates are stacked, a vertical force is applied to compress the device and compensate for the lack of actual contact. The circuit comprising the space between the plates must be completely sealed within the cooler, that is to say around the region of the passage openings defined in the plates, and transversely, that is to say around the outer periphery of the plates. In the lateral zones, i.e. on the outer periphery, this problem is solved by means of a raised edge projecting beyond the periphery of the substantially flat base of the plates, which has a specific inclination, in order to close the edge of each plate and connect it with the edge of the plate, stacked thereon by pressure. Thus, the plate has a combination of a longitudinal dimension, a height dimension (i.e. the dimension of its raised edge) and the angle of its raised edge, which allows the whole to be adjusted. As a result, when the surfaces of the plates are in contact in this manner, they can be welded together.
Obviously, the design and manufacture of cooler components requires a range of tolerances for various dimensions. On the other hand, the distance or space between the components must however be located within a small safety area that allows the components to be welded together. Therefore, the design of such components, in particular of stacked plates, must meet a compromise between said dimensional tolerance range and said distance or space.
While this problem is readily addressed at the raised edges projecting from the straight sections of the perimeter of the substantially flat base of the plate, there are greater difficulties at the raised edges projecting from their curved sections, as interference or insufficient space in these areas produces undesirable consequences in the assembly process. Furthermore, in the curved areas formed by such convex edges of the curved segments, the deformations when they are nested with the edges of the plates on which they are stacked are not uniform, since they are highly rigid. Experience has shown that friction in the bending area can have an adverse effect. These areas are also marked by friction when stacked together. This friction during assembly and compression of the stack causes deformation and therefore deformation in the less rigid areas. Furthermore, such deformations are evident in the actual portion comprising the visible space between the stacked plates, in particular in the region of the raised edges corresponding to the shorter straight sections of the stacked plates.
Therefore, such deformation causes displacement of the straight regions, thereby creating a space between the plates and thus causing leakage of fluid (coolant or oil) to the outside, which is a technical problem to be solved.
Patent US7717164B2 describes a stacked plate heat exchanger formed by stacking plates having the features of the preamble of claim 1 of the present invention.
Other patent documents representing the prior art and describing stacked plate heat exchangers are documents JP2006010192A, DE19828029a1 and EP1452816B 1.
None of the cited documents provides a solution to the above technical problem, that is to say the generation of fluid leaks due to displacements caused by deformations between the stacked plates.
Therefore, by providing a solution to the above technical problem, it seems necessary to provide an alternative to the prior art which covers the drawbacks found therein.
Disclosure of Invention
According to this object, a first aspect of the invention relates to a stacked plate for a stacked plate heat exchanger, comprising, in a manner known per se:
-a substantially flat base extending along a main plane, wherein a first and a second channel opening are positioned for passage of a first and a second medium, respectively, and
-a raised edge protruding beyond the perimeter of the substantially flat base, surrounding it in a continuous manner.
In contrast to the stacked plates known from the prior art, in the proposal of the first aspect of the invention the mentioned first and second portions of the convex boundary protrude beyond the periphery of the substantially flat base portion characteristically according to a first and second lateral angle, respectively, with respect to the main plane, wherein the first and second lateral angles are different from each other.
In this way, by suitably selecting such first and second corners, according to the application or final design of the exchanger for which the plates are stacked, the above technical problem is solved, since it brings about a suitable contact between the different portions of the raised edges of the individual plates stacked and nested together, optimizing the interference between them.
According to an embodiment, the first portion protrudes from a straight section of the perimeter of the substantially flat base, while the second portion protrudes from a curved section thereof.
According to a preferred embodiment, the first lateral angle is smaller than the second lateral angle.
In an embodiment wherein the first portion projects from a straight section of the base perimeter and the second portion projects from a curved section thereof, and the first lateral angle is less than the second lateral angle, interference is minimized in curved regions that are the most difficult regions for proper contact between the faces of the raised edges when stacked and nested in a stacked plate design according to the first aspect of the invention.
That is, for the mentioned embodiments, by the first aspect of the invention, a design of stacked plates with different lateral angles at the convex edges of the straight sections of the periphery of the base of the plates compared to those of the curved sections is provided, in order to compensate for the fact that they behave differently when they are nested together. This solution makes it possible to provide different assembly conditions between the different zones, i.e. between the raised edges of the different segments of the perimeter of the base of the stacked plates, in order to solve or minimize the interference problems between them.
Due to this difference in transverse angles, when the stacked plates are stacked together during assembly of the exchanger, the raised edges protruding from the straight sections of the perimeter of the base of the stacked plates come into contact with each other, but the raised edges corresponding to the curved sections do not, because there is a gap between them to avoid interference.
Subsequently, during assembly, when a compressive force is applied in the stacking direction, the whole becomes compact and the convex edges corresponding to the straight sections are slightly deformed while the convex edges corresponding to the curved sections are in contact with each other and are compressed vertically until they achieve sufficient contact, thereby avoiding undesired deformation at the convex edges corresponding to the straight sections, which occurs in the prior art due to friction between the convex edges of the curved sections.
According to an embodiment of the preferred embodiment, the first transverse angle has a value between 8 ° and 10.5 ° and the second transverse angle has a value between 11 ° and 14 °. It is obvious that angles having other values than the indicated values are also included in the invention.
In an embodiment, the mentioned curved sections form the rounded edges of the substantially flat base and are interconnected by the mentioned straight sections.
In one embodiment of this embodiment, the substantially flat base has a rectangular shape comprising four of said rounded edges and four of said straight sections, each of the four of said straight sections being interconnected by a rounded edge.
In other embodiments, the stacked plate according to the first aspect of the invention comprises two or more portions of said raised edge protruding beyond the periphery of the substantially flat base according to two or more lateral angles with respect to the main plane, respectively, wherein the two or more lateral angles are different from each other.
A second aspect of the invention relates to a stacked plate heat exchanger comprising a plurality of stacked plates according to the first aspect of the invention, comprising:
-a first stacked plate, wherein the first channel opening is located in the substantially flat base and the second channel opening is located in the raised annular structure; and
-a second stacked plate, wherein the second channel opening is located in the substantially flat base and the first channel opening is located in the raised annular structure.
In a heat exchanger according to a second aspect of the present invention, first and second stacked plates are alternately stacked and fixed one on top of the other, at least a portion of the raised edges of which are nested together by pressure.
Drawings
The above and other advantages and features will be more fully understood from the following detailed description of embodiments thereof, considered as illustrative and not restrictive, with reference to the accompanying drawings, in which:
fig. 1 is a perspective view showing a plurality of stacked plates, all stacked except one, i.e., the uppermost one, in a position nested and stacked in front of one immediately below according to one embodiment of the first aspect of the present invention.
Fig. 2a is a front view of a stacked plate provided by a first aspect of the invention for an embodiment corresponding to the uppermost plate in fig. 1.
Fig. 2b is a plan view of a stacked plate provided for the first aspect of the invention for the same embodiment as fig. 2 a.
FIG. 3a is a partial view of a cross section of the stacked plates in FIG. 2b along the section indicated by line G-G, including a raised edge protruding from a curved segment of the perimeter of the base of the plate.
FIG. 3b is a partial view of a cross section of the stacked plates in FIG. 2b along the section indicated by line E-E, including a raised edge protruding from a straight section of the perimeter of the base of the plate.
Fig. 4a is a front view showing parts of three stacked plates according to one embodiment of the first aspect of the invention, which are initially stacked together during assembly, including a raised edge protruding from a straight section of the periphery of their base.
Fig. 4b is a front view showing the other parts of three stacked plates according to the same embodiment as in fig. 4a, stacked together in the same initial assembly situation, wherein the parts in this case comprise a raised edge protruding from a curved section of the periphery of the base of the plate.
Detailed Description
As shown in the accompanying drawings, and in particular fig. 1, 2a and 2b, a stacked plate 1, 1a, 1b for a stacked plate heat exchanger according to a first aspect of the present invention comprises:
a substantially flat base 2a extending along a main plane, in which a first passage opening 7 and a second passage opening 8 are provided for the passage of a first medium and a second medium, respectively, and
a raised edge 2b, which protrudes beyond the perimeter of said substantially flat base 2a, continuously surrounding it.
Fig. 1 likewise shows a part of a stacked plate heat exchanger according to a second aspect of the invention, in particular a plurality of stacked plates 1, comprising:
a first stack of plates 1a, wherein the first passage openings 7 are located in a substantially flat base 2a, while the second passage openings 8 are provided in a raised annular structure; and
a second stacked plate 1b, wherein the second passage opening 8 is located in the substantially flat base 2a and the first passage opening 7 is located in a raised annular configuration.
The first stacked plate 1a and the second stacked plate 1b are alternately stacked one on another and attached, and the convex edges 2b thereof are stacked together by pressure.
The remaining elements of the heat exchanger according to the second aspect of the invention (cooling fluid inlet/outlet pipe, bottom support or base, upper plate or cover, etc.) are not shown, as they are considered to be of conventional type.
As shown in fig. 1 and 2b, the raised edge comprises a first portion 2b1 projecting beyond the curved section of the perimeter of the substantially flat base 2a, in particular from four curved sections corresponding to the four circular edges of said perimeter, and a second portion 2b2 projecting beyond the straight section of said perimeter of the substantially flat base 2a, in particular from four flat sections, each connected to each other by said four circular edges.
Fig. 3b shows how the first portion 2b1 projects beyond the curved section of the perimeter of the substantially flat base portion 2a according to a first transverse angle a relative to said main plane, whereas fig. 3a shows how the second portion 2b2 projects beyond the curved section of said perimeter according to a second transverse angle μ, the first and second transverse angles a, μ being different from each other, in particular for the embodiment shown, the first transverse angle a being smaller than the second transverse angle μ.
Fig. 4a and 4b show the effect achieved by the difference in the lateral angles a and μ, as already explained in the previous section.
In particular, said figures 4a and 4b show an initial assembly position in which three stacked plates according to the invention are stacked together but without having applied a vertical compression force (or, if already applied, very little) so that when the raised edges 2b1 protruding from the straight sections of the perimeter of the base 2a of the stacked plates come into contact with each other, as shown in figure 4a, the raised edges 2b2 protruding from the curved sections of said perimeter do not, with a space between them, to prevent interference, as shown in figure 4 b.
As previously described, subsequently in a subsequent assembly stage (not shown), when a compressive force is applied in the stacking direction, the whole becomes compact and the projecting edges 2b1 deform slightly and at the same time the projecting edges 2b2 come into contact with each other and compress vertically until they come into proper contact, thereby avoiding undesired deformation of the projecting edges 2b1 which occurs in the prior art due to friction between the projecting edges 2b 2.
The inventors have carried out experiments in which stacked plates are constructed, stacked and assembled together, and thus it has been achieved that there is no space between the plates or any visible deformation between their raised edges, neither before nor after they have been welded together by brazing.
Likewise, the inventors have conducted digital computer simulations on the assembled rectangular stacked plate group and the conventional rectangular stacked plates designed according to the first aspect of the present invention, so as to obtain a value of the von mises stress level in the plate group according to the present invention which is about 25% smaller than the plates in the conventional stack, in the region subjected to the greatest stress, that is to say in the region corresponding to the raised edge protruding from the shortest straight section of the perimeter of the base of the stacked plates.
Variations and modifications may be introduced by those skilled in the art into the described embodiments without departing from the scope of the invention as defined in the appended claims.
Claims (5)
1. A stacked plate (1, 1a, 1b) for a stacked plate heat exchanger, comprising:
-a substantially flat base (2a) extending along a main plane, wherein a first passage opening (7) and a second passage opening (8) are provided for passing a first medium and a second medium, respectively, and
-a raised edge (2b) projecting beyond the perimeter of said substantially flat base (2a), continuously surrounding it,
characterized in that a first portion (2b1) and a second portion (2b2) of the raised edge (2b) protrude beyond the perimeter of the substantially flat base (2a) according to a first transverse angle (a) and a second transverse angle (μ) with respect to the main plane, respectively, wherein the first transverse angle (a) and the second transverse angle (μ) are different from each other;
wherein the first portion (2b1) protrudes from a straight section of the perimeter of the substantially flat base (2a) and the second portion (2b2) protrudes from a curved section thereof;
and wherein the first lateral angle (a) is smaller than the second lateral angle (μ).
2. Stacked plate according to claim 1, wherein the first transverse angle (a) has a value between 8 ° and 10.5 ° and the second transverse angle has a value between 11 ° and 14 °.
3. Stacked plate according to claim 1 or 2, wherein the curved sections form rounded edges of the substantially flat base (2a) and are interconnected by the straight sections.
4. A stacking plate according to claim 3, wherein the substantially flat base (2a) has a rectangular shape comprising four of said rounded edges and four of said straight sections interconnecting each pair of said rounded edges.
5. A stacked plate heat exchanger comprising a plurality of stacked plates (1) according to any one of the preceding claims, comprising:
-a first stack of plates (1a) wherein the first passage opening (7) is located on a substantially flat base (2a) and the second passage opening (8) is located on a raised annular structure; and
-a second stacked plate (1b) wherein the second passage opening (8) is located on a substantially flat base (2a) and the first passage opening (7) is located on a raised annular structure;
wherein the first and second stacking plates (1a, 1b) are stacked and fixed alternately one on top of the other, at least a portion of the raised edges (2b) of which are nested together by pressure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201631339A ES2664103B1 (en) | 2016-10-17 | 2016-10-17 | STACKING PLATE FOR A HEAT EXCHANGER OF STACKED PLATES AND A HEAT EXCHANGER OF STACKED PLATES |
| ESP201631339 | 2016-10-17 | ||
| PCT/EP2017/076365 WO2018073180A1 (en) | 2016-10-17 | 2017-10-16 | Stacking plate for a stacked plate heat exchanger and a stacked plate heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110418932A CN110418932A (en) | 2019-11-05 |
| CN110418932B true CN110418932B (en) | 2021-06-18 |
Family
ID=60083998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780071214.XA Active CN110418932B (en) | 2016-10-17 | 2017-10-16 | Stacked plate for stacked plate heat exchanger and stacked plate heat exchanger |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3526535B1 (en) |
| CN (1) | CN110418932B (en) |
| ES (1) | ES2664103B1 (en) |
| WO (1) | WO2018073180A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1063487B1 (en) * | 1999-06-21 | 2003-08-06 | Valeo Thermique Moteur | Plate heat exchanger, especially for cooling oil of motor vehicles |
| CN202195728U (en) * | 2011-08-03 | 2012-04-18 | 南京工业大学 | Laminated plate fin structure heat exchanger with medium equipartition device |
| DE102010040321A1 (en) * | 2010-09-07 | 2012-04-19 | Behr Gmbh & Co. Kg | Stacked disk for heat transducer, has plate shaped body, flat section, which is arranged in part of main surface of plate shaped body |
| CN103471434A (en) * | 2013-09-25 | 2013-12-25 | 缪志先 | Box-like laminated heat exchanger with same plate material thickness and different plate space flow channel heights |
| CN103486886A (en) * | 2013-09-25 | 2014-01-01 | 缪志先 | Box-shaped stacked heat exchanger with different plate thicknesses and different plate distance flow channel heights |
| CN203464814U (en) * | 2010-05-06 | 2014-03-05 | 马勒国际有限公司 | Stacked plate-type heat exchanger |
| CN104854419A (en) * | 2012-12-12 | 2015-08-19 | 株式会社马勒滤清*** | Multi-plate-stack-type heat exchanger, and core plate therefor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59600935D1 (en) * | 1995-05-10 | 1999-01-21 | Laengerer & Reich Gmbh & Co | Plate heat exchanger |
| DE19750748C2 (en) * | 1997-11-14 | 2003-04-24 | Behr Gmbh & Co | Plate heat exchanger |
| DE10228263A1 (en) * | 2002-06-25 | 2004-01-22 | Behr Gmbh & Co. | Plate heat exchanger in stack construction |
| DE10349141A1 (en) * | 2003-10-17 | 2005-05-12 | Behr Gmbh & Co Kg | Stacked plate heat exchangers, in particular oil coolers for motor vehicles |
| US20110024095A1 (en) * | 2009-07-30 | 2011-02-03 | Mark Kozdras | Heat Exchanger with End Plate Providing Mounting Flange |
| DE102013220313B4 (en) * | 2013-10-08 | 2023-02-09 | Mahle International Gmbh | Stacked disc heat exchanger |
| KR101813048B1 (en) * | 2014-10-30 | 2017-12-29 | 린나이코리아 주식회사 | Plate type heat exchanger |
-
2016
- 2016-10-17 ES ES201631339A patent/ES2664103B1/en not_active Expired - Fee Related
-
2017
- 2017-10-16 WO PCT/EP2017/076365 patent/WO2018073180A1/en active Application Filing
- 2017-10-16 CN CN201780071214.XA patent/CN110418932B/en active Active
- 2017-10-16 EP EP17784292.9A patent/EP3526535B1/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1063487B1 (en) * | 1999-06-21 | 2003-08-06 | Valeo Thermique Moteur | Plate heat exchanger, especially for cooling oil of motor vehicles |
| CN203464814U (en) * | 2010-05-06 | 2014-03-05 | 马勒国际有限公司 | Stacked plate-type heat exchanger |
| DE102010040321A1 (en) * | 2010-09-07 | 2012-04-19 | Behr Gmbh & Co. Kg | Stacked disk for heat transducer, has plate shaped body, flat section, which is arranged in part of main surface of plate shaped body |
| CN202195728U (en) * | 2011-08-03 | 2012-04-18 | 南京工业大学 | Laminated plate fin structure heat exchanger with medium equipartition device |
| CN104854419A (en) * | 2012-12-12 | 2015-08-19 | 株式会社马勒滤清*** | Multi-plate-stack-type heat exchanger, and core plate therefor |
| CN103471434A (en) * | 2013-09-25 | 2013-12-25 | 缪志先 | Box-like laminated heat exchanger with same plate material thickness and different plate space flow channel heights |
| CN103486886A (en) * | 2013-09-25 | 2014-01-01 | 缪志先 | Box-shaped stacked heat exchanger with different plate thicknesses and different plate distance flow channel heights |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110418932A (en) | 2019-11-05 |
| WO2018073180A1 (en) | 2018-04-26 |
| ES2664103A1 (en) | 2018-04-18 |
| EP3526535B1 (en) | 2020-09-09 |
| ES2664103B1 (en) | 2019-01-30 |
| EP3526535A1 (en) | 2019-08-21 |
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