CA2290230A1 - Heat transfer plate and method of producing heat transfer plates - Google Patents
Heat transfer plate and method of producing heat transfer plates Download PDFInfo
- Publication number
- CA2290230A1 CA2290230A1 CA 2290230 CA2290230A CA2290230A1 CA 2290230 A1 CA2290230 A1 CA 2290230A1 CA 2290230 CA2290230 CA 2290230 CA 2290230 A CA2290230 A CA 2290230A CA 2290230 A1 CA2290230 A1 CA 2290230A1
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- CA
- Canada
- Prior art keywords
- plates
- heat transfer
- synthetic material
- flow channels
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
-
- 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
- F28D9/0037—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 conduits for the other heat-exchange medium also being formed by paired plates touching each other
Abstract
Method of producing heat transfer plates, wherein the plates are shaped such that they comprise cavities for the passage of air. The plates are produced of heated synthetic material, in particular foils of synthetic materials, in a deep drawing method by using compressed air. The cavities of the plates form flow channels in which a lateral displacement exists at least in parts of their axial extension. When the plates are disposed on top of one another, said displacement abuts an edge of a flow channel of the plate arranged above or below.
Description
Eberhard Paul P7429 Heat transfer plate and method of producing heat transfer plates Description Prior Art The invention relates to the subject matter of a heat transfer plate and a method of producing heat transfer plates of a heat transfer means.
It is known to use heat transfer means for the most different applications.
The basic mode of operation consists in that a medium of a high temperature is cooled down by another medium of a lower temperature, wherein the second medium is heated up or vice versa. This is usually achieved without any contact between the media.
Heat transfer means are therefore used e.g. in houses where the cold fresh air flowing into the house is heated up in the heat transfer means by the outflowing warm air. A heat transfer means of this type is known from DE 43 33 904. This heat transfer means which is designed in particular for two passing fluids with parallel flow channels, has a cross-section which is formed of plates disposed on top of one another in layers and having a meandering profile. Thereby, the plate disposed on the top covers the flow channels of the plate lying underneath. Different fluids may pass through the laterally neighbouring flow channels. The plates are manufactured from thin sheet metal. The fabrication of the meandering profiles requires very great efforts.
DE 296 20 248 U1 discloses a counter-flow heat transfer means of synthetic material or sheet metal. This heat transfer means is composed of specially profiled foil plates. The cross-sectional profile of the foil plates has a zigzag shape, wherein in each case, the tips of the profiles of two plates abut each other and the profiles are prevented from sliding into one another by forming a tooth of double the height and width at regular intervals.
The subsequent plate is supported on said tooth. This zigzag shaped cross-sectional profile offers a relatively small surface for the transfer of heat. By forming the teeth with double the height, yet more of the surface is lost for the transfer of heat.
Moreover, GB 1 336 448 discloses a heat transfer means which is formed of a pile of plates that are connected in pairs. The cross-section of the plates exhibits a curved profile. The flow channels are formed by connecting two plates. The curved cross-sectional profile again offers only a small surface for the transfer of heat.
Additionally, the crosswise flow achieves smaller heat flow densities as compared with a counter-flow heat transfer means.
Object of the invention On the one hand, it is the object of the invention to develop a simple method of producing plates of heat transfer means, and on the other hand to improve the profile of the plates to enable an optimum transfer of heat and stable positioning of the plates on top of each other.
Subject matter and advantages of the invention The present object is achieved by a method of producing plates of a heat transfer means, wherein the plates are shaped such that they comprise cavities for the passage of fluids, in that the plates are produced of a synthetic material, in particular a foil of synthetic material through a deep drawing method, and the deep drawing method is carried out with the use of compressed air. Suitable fluids are liquids and gases, in particular air. It is easier to shape and stretch synthetic material in a deep drawing method than metal. If a foil of synthetic material or the synthetic material is furthermore heated up, it can be shaped more easily and to a greater extent by the deep drawing method as compared with a metal foil or metal. The use of compressed air has the advantage that a pressure force on the shaping tool is achieved of a value of up to 8 to 9 times the value achieved with pure vacuum technology. Thus, it is possible to achieve a better shaping accuracy.
The high pressure enables the production of plate profiles having a complicated geometrical shape, such that large heat transferring surfaces are generated.
Furthermore, this high pressure enables the use of synthetic materials which are environmentally more friendly than PVC. At this stage, it should be mentioned that (vacuum) deep drawing carried out with the aid of compressed air is also called high-pressure or plasma-deep drawing.
The foil of synthetic material to be shaped has to be heated only slightly due to the compressed air utilized in the method according to the invention, in order to achieve uniform stretching and accurate shaping. The foil of synthetic material to be processed is only slightly cooled down on the surface of the shaping tools whereby the desired rigidity and uniform shaping of the foil of synthetic material is achieved.
In a particularly preferred variant of the method, the foil of synthetic material is stretched according to this method by 80% to 300% as compared with the initial material. This produces a surface, available for transferring heat, of approximately three times the size as compared to the initial foil. Furthermore, the wall thickness of the foil is drastically reduced through the stretching which enables a better heat transfer between the two media flowing in the heat transfer means.
An alternative variant of the method may consist in that non-inflammable polypropylene is used as foil of synthetic material. Polypropylene is more acceptable in terms of ecology than PVC. Additionally, polypropylene has a better heat conductivity and better temperature stability than PVC. As an alternative, synthetic materials like polystyrol, polyethylene, polymethacrylate, or polycarbonate may also be used.
An inventive variant of the method may include that the plates are connected to one another at the front side edges and lateral edges in an abutting and fluid-tight manner.
In this way, the media are prevented from getting mixed.
A further development of the method is characterized in that the plates are connected by glueing, compression, thermal welding, pulse welding, ultrasonic or pulsation welding.
This ensures the air-tight connection of the plates.
Moreover, the inventive heat transfer means is characterized by the good mutual support of the plates and is thus especially suited to be used with high pressures in the flow channels. The service life of a heat transfer means produced in this manner, is longer than the service life of heat transfer means of metal.
An embodiment of the plate is characterized in that the cavities form flow channels in which a lateral displacement exists along at least parts of their axial extent, which displacement abuts an edge of a flow channel of the plate disposed above or below when the plates are disposed on top of one another. The lateral displacement has the advantage that the flow in the channel is impaired by the displacement. This obstruction causes turbulences in the flowing media which increase the heat transfer value.
Furthermore, the displacement causes prolongation of the flow path. An extended flow path increases the time of presence in the heat transfer means and thus the heat transfer time. A further advantage of the displacement consists in that it prevents two plates that are disposed on top of one another from sliding into one another.
The displacement may extend over relatively short distances or over the entire length of the plate. The flow channels usually extend in parallel to one another.
In a particularly preferred embodiment, the flow channels extend in a straight line, in a zigzag line, in a curved or meandering manner in a horizontal or perpendicular plane.
Flow channels of such shapes cause deflection of the media from their straight direction of flow which again causes turbulences and thus gives an increased heat transfer value.
The deflection also prolongs the period of time for which the medium stays in the heat transfer means which extends the heat transfer time.
In a further development of the embodiment, the flow channels are disposed on top of one another in a crosswise manner. At the points of intersection the medium can get from one plane to the next, thus generating a spiral flow. In this connection, the directions of the flow channels are selected such that the different media passing through the heat transfer means are not mixed with one another, in particular not within one plane and not between two planes.
Further features and advantages of the invention can be gathered from the following description of embodiments of the invention, from the figures of the drawing showing details characterizing the invention, and from the claims. The individual features may be realized each individually or collectively in any arbitrary combination in an embodiment of the invention.
Drawing One embodiment of the inventive plates for heat transfer means is shown in the figures of the drawing in a highly schematized manner and is explained in the following description. In the drawing:
Fig. 1 shows a perspective view of a heat transfer means formed of several plates produced according to the inventive method;
Fig. 2 shows a perspective view of two channel profiles;
Fig. 3 shows a cross-section through the channel profiles of three plates disposed on top of one another with lateral displacement;
Fig. 4 shows a perspective view of a plate with an angular channel;
Fig. 5 shows a plan view of a plate with a meandering channel;
Fig. 6 shows a plan view of a plate with a zigzag shaped channel, wherein the channel lying underneath is shown with dashed lines;
Description of the embodiment Fig. 1 shows a heat transfer means 10 which is composed of five plates 11,12,13,14,15 disposed on top of one another. Each plate 11,12,13,14,15, which is formed according to the illustration shown in the following drawings, comprises a base plane 16 of octogonal design. The base plane 16 may also have different designs (e.g. hexagonal). A
peripheral wall 17 forming an angle ~ 90«< 180° with the plane of the base plane 16 is provided along the periphery of the base plane 16. The peripheral wall 17 is joined by an edge 18 that extends parallel to the plane of the base plane 16. The edge 18 terminates in the front side edges 1 and lateral edges 2. Two neighbouring plates are connected at the edges 18 in an air-tight manner. The peripheral wall 17 with associated edge 18 is interrupted at the two shortest opposing sides of the plate 19,20.
Fig. 2 shows channel profiles 30,31 of an upper and a lower base plane which are both produced from synthetic material by means of the high pressure deep drawing method. A
heat transfer means having flow channels 32 of a square or rectangular cross-sectional shape is realized in that two plates are brought into contact with the channel profiles 30,31. The flow channels 32 are formed in that the upper channel profile 30 covers the flow channels of the lower channel profile 31. To prevent the channel profiles 30,31 from sliding into one another, the upper channel profile 30 has a displacement 33 to the right and the lower channel profile 31 has a displacement 34 to the left.
Fig. 3 shows a cross-section through three channel profiles 30,31,35 lying on top of one another according to figure 2. The cross-section is located in the plane containing the displacement 33,34. The displacement 34 is displaced to the left with respect to the displacement 33 thus generating a stable support for the channel profile 30 on the channel profile 31. The channel profiles 30,31 may be glued or welded to one another at this location. The heat transfer means is thus particularly suitable to be used with high pressures in the flow channels. On the other hand, a small gap is generated between the edges 40 and 41. There, the medium can get from one plane to the other which causes spiral flows and thus further turbulences which have a positive influence on the heat transfer process.
Fig. 4 shows a channel profile 50 having flow channels 51 with a square or rectangular cross-section. The medium flows into a predetermined first direction in the front part 52 and, in the central part 53, is then deflected from said first direction to a second direction extending at an angle to said first direction. In the rear part 54 the medium is again deflected to the original first direction. These changes occur repeatedly in the heat transfer means in the direction of flow.
The deflection of the medium caused by the shape of the flow channel causes multiple turbulences and thus an increased heat transfer value. The deflection also prolongs the period of time that the medium stays in the heat transfer means, thus extending the heat transfer time.
Fig. 5 shows a plan view of a plate with flow channels in the form of meandering lines 60.
This embodiment enables the use of high pressures since the support surfaces for the other plates are very large.
Fig. 6 shows a plan view of two plates with zigzag shaped flow channels 70,71.
The zigzag shaped flow channels 70 of the upper plate are shown in solid lines and the flow channels 71 of the lower plate are shown with dashed lines. At the points of intersection 72, the medium may get from one plane to the next thus generating a spiral flow.
Methods of producing heat transfer plates wherein the plates are shaped such that they comprise cavities for the passage of air. The plates are produced of heated synthetic material, in particular of foils of synthetic material in a deep drawing method with the use of compressed air. The cavities of the plates form flow channels in which a lateral displacement exists at least in parts of their axial extension. When the plates are disposed on top of one another, said displacement abuts an edge of a flow channel of a plate arranged above or below.
_ 7 List of reference numerals 1 front side edge 2 lateral edge heat transfer means 11 plate 12plate 13plate 14plate 15plate 16base plane 17peripheral wall 18edge 19short side 20short side 30 upper channel profile 31 lower channel profile 32 flow channel 33 displacement to the right 34 displacement to the left 35 channel profile 40 edge of displacement 33 41 edge of displacement 34 50 channel profile having a zigzag shape 51 flow channel 52 front part 53 central part 54 rear part 60 flow channel with meandering shape 70 flow channel with zigzag shape (upper plate) 71 flow channel with zigzag shape (lower plate) 72 point of intersection
It is known to use heat transfer means for the most different applications.
The basic mode of operation consists in that a medium of a high temperature is cooled down by another medium of a lower temperature, wherein the second medium is heated up or vice versa. This is usually achieved without any contact between the media.
Heat transfer means are therefore used e.g. in houses where the cold fresh air flowing into the house is heated up in the heat transfer means by the outflowing warm air. A heat transfer means of this type is known from DE 43 33 904. This heat transfer means which is designed in particular for two passing fluids with parallel flow channels, has a cross-section which is formed of plates disposed on top of one another in layers and having a meandering profile. Thereby, the plate disposed on the top covers the flow channels of the plate lying underneath. Different fluids may pass through the laterally neighbouring flow channels. The plates are manufactured from thin sheet metal. The fabrication of the meandering profiles requires very great efforts.
DE 296 20 248 U1 discloses a counter-flow heat transfer means of synthetic material or sheet metal. This heat transfer means is composed of specially profiled foil plates. The cross-sectional profile of the foil plates has a zigzag shape, wherein in each case, the tips of the profiles of two plates abut each other and the profiles are prevented from sliding into one another by forming a tooth of double the height and width at regular intervals.
The subsequent plate is supported on said tooth. This zigzag shaped cross-sectional profile offers a relatively small surface for the transfer of heat. By forming the teeth with double the height, yet more of the surface is lost for the transfer of heat.
Moreover, GB 1 336 448 discloses a heat transfer means which is formed of a pile of plates that are connected in pairs. The cross-section of the plates exhibits a curved profile. The flow channels are formed by connecting two plates. The curved cross-sectional profile again offers only a small surface for the transfer of heat.
Additionally, the crosswise flow achieves smaller heat flow densities as compared with a counter-flow heat transfer means.
Object of the invention On the one hand, it is the object of the invention to develop a simple method of producing plates of heat transfer means, and on the other hand to improve the profile of the plates to enable an optimum transfer of heat and stable positioning of the plates on top of each other.
Subject matter and advantages of the invention The present object is achieved by a method of producing plates of a heat transfer means, wherein the plates are shaped such that they comprise cavities for the passage of fluids, in that the plates are produced of a synthetic material, in particular a foil of synthetic material through a deep drawing method, and the deep drawing method is carried out with the use of compressed air. Suitable fluids are liquids and gases, in particular air. It is easier to shape and stretch synthetic material in a deep drawing method than metal. If a foil of synthetic material or the synthetic material is furthermore heated up, it can be shaped more easily and to a greater extent by the deep drawing method as compared with a metal foil or metal. The use of compressed air has the advantage that a pressure force on the shaping tool is achieved of a value of up to 8 to 9 times the value achieved with pure vacuum technology. Thus, it is possible to achieve a better shaping accuracy.
The high pressure enables the production of plate profiles having a complicated geometrical shape, such that large heat transferring surfaces are generated.
Furthermore, this high pressure enables the use of synthetic materials which are environmentally more friendly than PVC. At this stage, it should be mentioned that (vacuum) deep drawing carried out with the aid of compressed air is also called high-pressure or plasma-deep drawing.
The foil of synthetic material to be shaped has to be heated only slightly due to the compressed air utilized in the method according to the invention, in order to achieve uniform stretching and accurate shaping. The foil of synthetic material to be processed is only slightly cooled down on the surface of the shaping tools whereby the desired rigidity and uniform shaping of the foil of synthetic material is achieved.
In a particularly preferred variant of the method, the foil of synthetic material is stretched according to this method by 80% to 300% as compared with the initial material. This produces a surface, available for transferring heat, of approximately three times the size as compared to the initial foil. Furthermore, the wall thickness of the foil is drastically reduced through the stretching which enables a better heat transfer between the two media flowing in the heat transfer means.
An alternative variant of the method may consist in that non-inflammable polypropylene is used as foil of synthetic material. Polypropylene is more acceptable in terms of ecology than PVC. Additionally, polypropylene has a better heat conductivity and better temperature stability than PVC. As an alternative, synthetic materials like polystyrol, polyethylene, polymethacrylate, or polycarbonate may also be used.
An inventive variant of the method may include that the plates are connected to one another at the front side edges and lateral edges in an abutting and fluid-tight manner.
In this way, the media are prevented from getting mixed.
A further development of the method is characterized in that the plates are connected by glueing, compression, thermal welding, pulse welding, ultrasonic or pulsation welding.
This ensures the air-tight connection of the plates.
Moreover, the inventive heat transfer means is characterized by the good mutual support of the plates and is thus especially suited to be used with high pressures in the flow channels. The service life of a heat transfer means produced in this manner, is longer than the service life of heat transfer means of metal.
An embodiment of the plate is characterized in that the cavities form flow channels in which a lateral displacement exists along at least parts of their axial extent, which displacement abuts an edge of a flow channel of the plate disposed above or below when the plates are disposed on top of one another. The lateral displacement has the advantage that the flow in the channel is impaired by the displacement. This obstruction causes turbulences in the flowing media which increase the heat transfer value.
Furthermore, the displacement causes prolongation of the flow path. An extended flow path increases the time of presence in the heat transfer means and thus the heat transfer time. A further advantage of the displacement consists in that it prevents two plates that are disposed on top of one another from sliding into one another.
The displacement may extend over relatively short distances or over the entire length of the plate. The flow channels usually extend in parallel to one another.
In a particularly preferred embodiment, the flow channels extend in a straight line, in a zigzag line, in a curved or meandering manner in a horizontal or perpendicular plane.
Flow channels of such shapes cause deflection of the media from their straight direction of flow which again causes turbulences and thus gives an increased heat transfer value.
The deflection also prolongs the period of time for which the medium stays in the heat transfer means which extends the heat transfer time.
In a further development of the embodiment, the flow channels are disposed on top of one another in a crosswise manner. At the points of intersection the medium can get from one plane to the next, thus generating a spiral flow. In this connection, the directions of the flow channels are selected such that the different media passing through the heat transfer means are not mixed with one another, in particular not within one plane and not between two planes.
Further features and advantages of the invention can be gathered from the following description of embodiments of the invention, from the figures of the drawing showing details characterizing the invention, and from the claims. The individual features may be realized each individually or collectively in any arbitrary combination in an embodiment of the invention.
Drawing One embodiment of the inventive plates for heat transfer means is shown in the figures of the drawing in a highly schematized manner and is explained in the following description. In the drawing:
Fig. 1 shows a perspective view of a heat transfer means formed of several plates produced according to the inventive method;
Fig. 2 shows a perspective view of two channel profiles;
Fig. 3 shows a cross-section through the channel profiles of three plates disposed on top of one another with lateral displacement;
Fig. 4 shows a perspective view of a plate with an angular channel;
Fig. 5 shows a plan view of a plate with a meandering channel;
Fig. 6 shows a plan view of a plate with a zigzag shaped channel, wherein the channel lying underneath is shown with dashed lines;
Description of the embodiment Fig. 1 shows a heat transfer means 10 which is composed of five plates 11,12,13,14,15 disposed on top of one another. Each plate 11,12,13,14,15, which is formed according to the illustration shown in the following drawings, comprises a base plane 16 of octogonal design. The base plane 16 may also have different designs (e.g. hexagonal). A
peripheral wall 17 forming an angle ~ 90«< 180° with the plane of the base plane 16 is provided along the periphery of the base plane 16. The peripheral wall 17 is joined by an edge 18 that extends parallel to the plane of the base plane 16. The edge 18 terminates in the front side edges 1 and lateral edges 2. Two neighbouring plates are connected at the edges 18 in an air-tight manner. The peripheral wall 17 with associated edge 18 is interrupted at the two shortest opposing sides of the plate 19,20.
Fig. 2 shows channel profiles 30,31 of an upper and a lower base plane which are both produced from synthetic material by means of the high pressure deep drawing method. A
heat transfer means having flow channels 32 of a square or rectangular cross-sectional shape is realized in that two plates are brought into contact with the channel profiles 30,31. The flow channels 32 are formed in that the upper channel profile 30 covers the flow channels of the lower channel profile 31. To prevent the channel profiles 30,31 from sliding into one another, the upper channel profile 30 has a displacement 33 to the right and the lower channel profile 31 has a displacement 34 to the left.
Fig. 3 shows a cross-section through three channel profiles 30,31,35 lying on top of one another according to figure 2. The cross-section is located in the plane containing the displacement 33,34. The displacement 34 is displaced to the left with respect to the displacement 33 thus generating a stable support for the channel profile 30 on the channel profile 31. The channel profiles 30,31 may be glued or welded to one another at this location. The heat transfer means is thus particularly suitable to be used with high pressures in the flow channels. On the other hand, a small gap is generated between the edges 40 and 41. There, the medium can get from one plane to the other which causes spiral flows and thus further turbulences which have a positive influence on the heat transfer process.
Fig. 4 shows a channel profile 50 having flow channels 51 with a square or rectangular cross-section. The medium flows into a predetermined first direction in the front part 52 and, in the central part 53, is then deflected from said first direction to a second direction extending at an angle to said first direction. In the rear part 54 the medium is again deflected to the original first direction. These changes occur repeatedly in the heat transfer means in the direction of flow.
The deflection of the medium caused by the shape of the flow channel causes multiple turbulences and thus an increased heat transfer value. The deflection also prolongs the period of time that the medium stays in the heat transfer means, thus extending the heat transfer time.
Fig. 5 shows a plan view of a plate with flow channels in the form of meandering lines 60.
This embodiment enables the use of high pressures since the support surfaces for the other plates are very large.
Fig. 6 shows a plan view of two plates with zigzag shaped flow channels 70,71.
The zigzag shaped flow channels 70 of the upper plate are shown in solid lines and the flow channels 71 of the lower plate are shown with dashed lines. At the points of intersection 72, the medium may get from one plane to the next thus generating a spiral flow.
Methods of producing heat transfer plates wherein the plates are shaped such that they comprise cavities for the passage of air. The plates are produced of heated synthetic material, in particular of foils of synthetic material in a deep drawing method with the use of compressed air. The cavities of the plates form flow channels in which a lateral displacement exists at least in parts of their axial extension. When the plates are disposed on top of one another, said displacement abuts an edge of a flow channel of a plate arranged above or below.
_ 7 List of reference numerals 1 front side edge 2 lateral edge heat transfer means 11 plate 12plate 13plate 14plate 15plate 16base plane 17peripheral wall 18edge 19short side 20short side 30 upper channel profile 31 lower channel profile 32 flow channel 33 displacement to the right 34 displacement to the left 35 channel profile 40 edge of displacement 33 41 edge of displacement 34 50 channel profile having a zigzag shape 51 flow channel 52 front part 53 central part 54 rear part 60 flow channel with meandering shape 70 flow channel with zigzag shape (upper plate) 71 flow channel with zigzag shape (lower plate) 72 point of intersection
Claims (8)
1. Method of producing plates of a heat transfer means, wherein the plates are shaped in such a manner that they comprise cavities for the passage of fluids, by producing the plates from synthetic material, in particular a foil of synthetic material, through a deep drawing method, and that the deep drawing method is carried out with the use of compressed air.
2. Method according to claim 1, characterized in that the synthetic material or the foil of synthetic material is stretched by the deep drawing method by 80% to 300%
as compared with the initial material.
as compared with the initial material.
3. Method according to one of the claims 1 or 2, characterized in that non-inflammable polypropylene is used as synthetic material or foil of synthetic material.
4. Method according to one of the claims 1 to 3, characterized in that the plates are connected to one another at the front side edges (1) and lateral edges (2) in an abutting and fluid-tight manner.
5. Method according to claim 4, characterized in that the plates are connected by glueing, compression, thermal welding, pulse welding, ultrasonic or pulsation welding.
6. Plate according to a production method of claims 1 to 5, characterized in that the cavities form flow channels in which a lateral displacement exists at least in parts of their axial extension, wherein when the plates are disposed on top of one another, said displacement abuts an edge of a flow channel of a plate disposed above or below.
7. Plate according to claim 6, characterized in that the flow channels extend in a horizontal or perpendicular plane in a straight, zigzag shaped, curved or meandering manner.
8. Plate according to claim 6 or 7, characterized in that the flow channels are disposed on top of one another in a crosswise manner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1998153526 DE19853526A1 (en) | 1998-11-20 | 1998-11-20 | Heat exchanger production comprises forming plastic plates using a plasma deep drawing technique, and then stacking the plates on top of each other |
| DE19853526.0 | 1998-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2290230A1 true CA2290230A1 (en) | 2000-05-20 |
Family
ID=7888421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2290230 Abandoned CA2290230A1 (en) | 1998-11-20 | 1999-11-19 | Heat transfer plate and method of producing heat transfer plates |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2000153551A (en) |
| KR (1) | KR20000035597A (en) |
| CN (1) | CN1254825A (en) |
| CA (1) | CA2290230A1 (en) |
| DE (1) | DE19853526A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8418365B2 (en) | 2006-01-04 | 2013-04-16 | Daimler Ag | Heat exchanger comprising deep-drawn heat exchanger plates |
| DE102018006461A1 (en) * | 2018-08-10 | 2020-02-13 | Eberhard Paul | Heat exchanger board protruding into one another at an acute angle - like a pointed roof |
| DE102018006457A1 (en) * | 2018-08-10 | 2020-02-27 | Eberhard Paul | Heat exchanger board synchronous, sawtooth-like - pent roof shaped |
| EP3730891A1 (en) * | 2019-04-26 | 2020-10-28 | Hamilton Sundstrand Corporation | Heat exchanger for high prandtl number fluids |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19959898C2 (en) * | 1999-12-11 | 2002-12-05 | Eberhard Paul | Wärmeübertragerplatine |
| EP1203923B1 (en) | 2000-11-01 | 2006-07-26 | AKG-Thermotechnik GmbH & Co.KG | Heat exchanger, in particular condensation laundry drier |
| DE102009005038A1 (en) * | 2009-01-17 | 2010-07-22 | Mahle International Gmbh | turbulence plate |
| DE102009020798A1 (en) | 2009-05-05 | 2010-11-11 | Strietzel, Thomas, Dr. | Device for heat exchange between two fluid flows, for controlling ventilation and climatization of chambers, has two thermally isolated channels which are separated from each other and are adjacently arranged in opposite directions |
| JP2011017516A (en) * | 2009-07-10 | 2011-01-27 | Mitsubishi Electric Corp | Plate laminated type cooling device and method of manufacturing the same |
| EP2578982A4 (en) * | 2010-05-28 | 2015-10-28 | Toyota Motor Co Ltd | Heat exchanger and method for manufacturing same |
| ES2527826T3 (en) | 2012-01-20 | 2015-01-30 | Zehnder Verkaufs- Und Verwaltungs Ag | Heat exchanger element and production procedure |
| DE102013104583A1 (en) | 2013-05-03 | 2014-11-06 | Hautau Gmbh | Heat exchanger for installation in confined spaces |
| WO2015006856A1 (en) | 2013-07-19 | 2015-01-22 | Marcel Riendeau | Heat / enthalpy exchanger element and method for the production |
| DE102018006453A1 (en) * | 2018-08-10 | 2020-02-13 | Eberhard Paul | Heat exchangers with differently shaped, mutually profiled plates |
| CN115335655A (en) | 2020-04-02 | 2022-11-11 | 三菱电机株式会社 | Heat transfer plate and heat exchange element |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2069950B1 (en) * | 1969-12-12 | 1974-07-12 | Ctre Scient Tech Batimen | |
| DE4333904C2 (en) * | 1993-09-27 | 1996-02-22 | Eberhard Dipl Ing Paul | Duct heat exchanger |
| DE29620248U1 (en) * | 1996-11-21 | 1997-02-13 | Kuhr Thomas | Counterflow heat exchanger made of profile plates |
-
1998
- 1998-11-20 DE DE1998153526 patent/DE19853526A1/en not_active Ceased
-
1999
- 1999-11-19 CA CA 2290230 patent/CA2290230A1/en not_active Abandoned
- 1999-11-19 KR KR1019990051681A patent/KR20000035597A/en not_active Application Discontinuation
- 1999-11-19 JP JP11329307A patent/JP2000153551A/en active Pending
- 1999-11-19 CN CN 99124851 patent/CN1254825A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8418365B2 (en) | 2006-01-04 | 2013-04-16 | Daimler Ag | Heat exchanger comprising deep-drawn heat exchanger plates |
| DE102018006461A1 (en) * | 2018-08-10 | 2020-02-13 | Eberhard Paul | Heat exchanger board protruding into one another at an acute angle - like a pointed roof |
| DE102018006457A1 (en) * | 2018-08-10 | 2020-02-27 | Eberhard Paul | Heat exchanger board synchronous, sawtooth-like - pent roof shaped |
| DE102018006461B4 (en) | 2018-08-10 | 2024-01-25 | Eberhard Paul | Heat exchangers with interlocking, acute-angled or pointed-roof-like boards |
| EP3730891A1 (en) * | 2019-04-26 | 2020-10-28 | Hamilton Sundstrand Corporation | Heat exchanger for high prandtl number fluids |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20000035597A (en) | 2000-06-26 |
| CN1254825A (en) | 2000-05-31 |
| DE19853526A1 (en) | 2000-05-31 |
| JP2000153551A (en) | 2000-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |