EP0024195B1 - Heat transfer plate having a gasket groove and method of forming such a groove - Google Patents
Heat transfer plate having a gasket groove and method of forming such a groove Download PDFInfo
- Publication number
- EP0024195B1 EP0024195B1 EP19800302777 EP80302777A EP0024195B1 EP 0024195 B1 EP0024195 B1 EP 0024195B1 EP 19800302777 EP19800302777 EP 19800302777 EP 80302777 A EP80302777 A EP 80302777A EP 0024195 B1 EP0024195 B1 EP 0024195B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat transfer
- plastics material
- plate
- groove
- pressed
- 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.)
- Expired
Links
Images
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
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/10—Arrangements for sealing the margins
Definitions
- This invention relates to the gasketing of plate heat transfer apparatus.
- a plate heat transfer apparatus i.e. either a plate heat exchanger or a plate evaporator, consists of a series of plates arranged in a spaced, face-to-face, parallel relationship to form flow spaces between the plates.
- the boundaries of the flow spaces are formed and sealed by gaskets which are normally mounted in grooves pressed into the plates.
- the gaskets are normally of a rubber or rubber-like material and are retained in their respective grooves by adhesive.
- the initial mounting of the gaskets in the grooves is a fairly time consuming process involving surface preparation, application of adhesive, location of the gasket in the groove and probably curing of the adhesive. When the gasket needs to be replaced, the old gasket has to be stripped out, the metal surface cleaned of old adhesive and then the new gasket has to be mounted with all that entails.
- the gasket recesses were precision machined grooves, the sealing could-be more easily obtained by using preformed 0-ring, lip or other similar seals which would be a close mechanical fit in the grooves and would therefore not need to be retained by adhesive.
- the usual metal thickness e.g. 0.7 mm
- precision machining of grooves is not practicable and for many years the use of adhesive has been the normal practice in the industry.
- the present invention should disclose a replaceable seal and a method of forming a seal which does not require an accurately machined groove in the metal plate, adhesive fixing of the sealing gasket or a specially manufactured sealing gasket.
- a pressed metal heat transfer plate having a pressed gasket groove characterized in that said pressed groove is at least partially filled with a rigid plastics material which adheres to the plate metal and which is formed in situ with an accurate recess adapted to receive and retain by a close mechanical fit, a preformed seal of O-ring, lip or other appropriate type.
- the heat transfer plate may be characterised in that the plastics material is formed with two or more accurate recesses to receive seals so as to provide a double or multifold seal between the flow spaces and the environment.
- the heat transfer plate may be characterised in that the space between the seals of the double seal is monitored for leaking fluid.
- the heat transfer plate may be characterised in that the monitoring is achieved by circulating a gas or liquid through the space.
- a method of forming an accurately profiled gasket recess in a pressed metal heat-transfer plate characterised by the steps of forming a pressed groove in the metal plate, at least partially filling the pressed groove with a rigid plastics material which adheres to the metal of the plate, and accurately forming, in situ, the gasket recess in the plastics material.
- the method may be characterised in that two or more parallel gasket recesses are formed in the plastics material.
- the method may be characterised in that the or each gasket recess may be formed by moulding or by machining the plastics material.
- a heat transfer apparatus comprising a pack of heat transfer plates as above defined.
- a heat exchanger plate is illustrated at 1 and as having four corner ports 2, 3, 4 and 5.
- the line of a peripheral gasket, of double seal form is indicated at 6, and it will be noted that the corner ports 4 and 5 also have port gaskets 7, also of double seal nature.
- FIGS 2 to 4 each show a portion of the heat exchanger plate 1 as being provided with a pressed in gasket recess 8.
- this recess 8 may be converted to a form sufficiently accurate for a preformed seal 6, it is filled with a plastics material 9 which has the property of adhering to the metal of the plate 1 and which is formed, either by pressure moulding or by machining, or a combination of both, with an accurately formed recess 10 to receive the seal.
- the plastics material can be moulded under pressure so as simultaneously to fix it in the pressed groove and to form a suitably profiled recess 10, for the seal.
- the plastics material can be roughly sculptured and, when cured, machined to form the final shape of the recess 10.
- Figure 2 shows a construction in which the filling 9 is formed with a pair of such recesses 10, each of which is shown as receiving an O-ring seal 11 to form the double seal.
- the configurations of the port gaskets 7 may be similar.
- a seal of this nature is beneficial, especially if the space between them is monitored for leakage of the hazardous fluid so that this leakage is detected before the hazardous fluid leaks past the second seal into the ambient atmosphere.
- the space between the two seals 11 may have an appropriate fluid pumped through it and in circuit with a detector to detect the presence of the hazardous fluid in the diluent. Suitable micro-bore piping may be used to make the connections.
- grooves 10 of Figure 2 are shown as receiving 0-ring seals, lip or other seals could be used instead.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Description
- This invention relates to the gasketing of plate heat transfer apparatus.
- A plate heat transfer apparatus, i.e. either a plate heat exchanger or a plate evaporator, consists of a series of plates arranged in a spaced, face-to-face, parallel relationship to form flow spaces between the plates. The boundaries of the flow spaces are formed and sealed by gaskets which are normally mounted in grooves pressed into the plates. The gaskets are normally of a rubber or rubber-like material and are retained in their respective grooves by adhesive. The initial mounting of the gaskets in the grooves is a fairly time consuming process involving surface preparation, application of adhesive, location of the gasket in the groove and probably curing of the adhesive. When the gasket needs to be replaced, the old gasket has to be stripped out, the metal surface cleaned of old adhesive and then the new gasket has to be mounted with all that entails.
- If, instead of being pressed, the gasket recesses were precision machined grooves, the sealing could-be more easily obtained by using preformed 0-ring, lip or other similar seals which would be a close mechanical fit in the grooves and would therefore not need to be retained by adhesive. However, when using the usual metal thickness (e.g. 0.7 mm) of plate heat transfer apparatus, precision machining of grooves is not practicable and for many years the use of adhesive has been the normal practice in the industry.
- A possible solution to this problem was disclosed in GB-A-1 273139, which provides a single sealing element so shaped in cross-section that when compressed between a pair of adjacent plates a groove opens on its inner periphery, the groove being arranged to receive pressurized fluid, expand the groove and urge the sealing element more firmly into engagement with the adjacent plates. However, only minor variations would be catered for by this sealing element and the flexibility of the sealing element demanded the provision of integral plate spacing portions.
- It is intended that the present invention should disclose a replaceable seal and a method of forming a seal which does not require an accurately machined groove in the metal plate, adhesive fixing of the sealing gasket or a specially manufactured sealing gasket.
- According to a first aspect of the present invention, there is provided a pressed metal heat transfer plate having a pressed gasket groove characterized in that said pressed groove is at least partially filled with a rigid plastics material which adheres to the plate metal and which is formed in situ with an accurate recess adapted to receive and retain by a close mechanical fit, a preformed seal of O-ring, lip or other appropriate type.
- By using an intermediate filling of plastics material permanently attached to the plate metal, no adhesive is required to attach the sealing gasket, conventional commercially available gasket forms may be used, the gasket loading may be reduced, which leads to easier tightening of the frame of the heat transfer apparatus, the application of the gasket can be automated more easily and the replacement of gaskets is facilitated.
- Conveniently the heat transfer plate may be characterised in that the plastics material is formed with two or more accurate recesses to receive seals so as to provide a double or multifold seal between the flow spaces and the environment.
- Preferably the heat transfer plate may be characterised in that the space between the seals of the double seal is monitored for leaking fluid.
- More preferably the heat transfer plate may be characterised in that the monitoring is achieved by circulating a gas or liquid through the space.
- According to a second aspect of the invention, there is provided a method of forming an accurately profiled gasket recess in a pressed metal heat-transfer plate, characterised by the steps of forming a pressed groove in the metal plate, at least partially filling the pressed groove with a rigid plastics material which adheres to the metal of the plate, and accurately forming, in situ, the gasket recess in the plastics material.
- Conveniently the method may be characterised in that two or more parallel gasket recesses are formed in the plastics material.
- Conveniently the method may be characterised in that the or each gasket recess may be formed by moulding or by machining the plastics material.
- According to a third aspect of the invention there is provided a heat transfer apparatus comprising a pack of heat transfer plates as above defined.
- The invention will be further described with reference to the accompanying drawings, in which:
- Figure 1 is an elevation of a form of heat exchanger plate in accordance with a form of the present invention and having a double seal gasket;
- Figure 2 is a section on the line 11-11 of Figure 1; and
- Figures 3 and 4 are each diagrammatic sections similar to Figure 2 showing a form of single seal applied according to the techniques of the present invention.
- For the sake of clarity the mechanical retention of the seal is not shown in Figures 2 to 4.
- Turning first to Figure 1, a heat exchanger plate is illustrated at 1 and as having four
corner ports corner ports 4 and 5 also haveport gaskets 7, also of double seal nature. - Figures 2 to 4 each show a portion of the
heat exchanger plate 1 as being provided with a pressed ingasket recess 8. - In order that this
recess 8 may be converted to a form sufficiently accurate for apreformed seal 6, it is filled with aplastics material 9 which has the property of adhering to the metal of theplate 1 and which is formed, either by pressure moulding or by machining, or a combination of both, with an accurately formedrecess 10 to receive the seal. - The plastics material can be moulded under pressure so as simultaneously to fix it in the pressed groove and to form a suitably profiled
recess 10, for the seal. Alternatively, the plastics material can be roughly sculptured and, when cured, machined to form the final shape of therecess 10. - In Figure 3 the seal is shown in the form of a single 0-
ring seal 12. - In Figure 4, the 0-
ring seal 12 is shown as being replaced by alip seal 13. - In accordance with a preferred form of the present invention, Figure 2 shows a construction in which the
filling 9 is formed with a pair ofsuch recesses 10, each of which is shown as receiving an O-ring seal 11 to form the double seal. The configurations of theport gaskets 7 may be similar. - It will be appreciated that when dealing with hazardous fluids, a seal of this nature is beneficial, especially if the space between them is monitored for leakage of the hazardous fluid so that this leakage is detected before the hazardous fluid leaks past the second seal into the ambient atmosphere. For this purpose, the space between the two
seals 11 may have an appropriate fluid pumped through it and in circuit with a detector to detect the presence of the hazardous fluid in the diluent. Suitable micro-bore piping may be used to make the connections. - Various modifications may be made within the scope of the invention. Thus, although the
grooves 10 of Figure 2 are shown as receiving 0-ring seals, lip or other seals could be used instead.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT80302777T ATE4936T1 (en) | 1979-08-13 | 1980-08-12 | HEAT TRANSFER PLATE WITH A SEALING GROOVE AND METHOD OF MANUFACTURING SUCH SEALING GROOVE. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7928135 | 1979-08-13 | ||
GB7928135 | 1979-08-13 | ||
GB8000909 | 1980-01-10 | ||
GB8000909 | 1980-01-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0024195A2 EP0024195A2 (en) | 1981-02-25 |
EP0024195A3 EP0024195A3 (en) | 1981-04-22 |
EP0024195B1 true EP0024195B1 (en) | 1983-10-05 |
Family
ID=26272542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19800302777 Expired EP0024195B1 (en) | 1979-08-13 | 1980-08-12 | Heat transfer plate having a gasket groove and method of forming such a groove |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0024195B1 (en) |
BR (1) | BR8005069A (en) |
CA (1) | CA1125739A (en) |
DE (2) | DE3065164D1 (en) |
DK (1) | DK349180A (en) |
ES (1) | ES8106603A1 (en) |
IN (1) | IN154553B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106017159A (en) * | 2015-04-29 | 2016-10-12 | 青岛中正周和科技发展有限公司 | Copper alloy plate heat exchanger |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8505849D0 (en) * | 1985-12-11 | 1985-12-11 | Alfa Laval Thermal Ab | SEAL FOR PLATE HEAT EXCHANGER |
EP1709381B1 (en) * | 2003-11-07 | 2009-04-15 | Invensys APV A/S | A heat exchanger plate with gasket |
DE102014014070A1 (en) | 2014-09-29 | 2016-03-31 | Forschungszentrum Jülich GmbH | Device for controlled heat transfer to and from a component |
CN106052470B (en) * | 2015-04-29 | 2018-01-23 | 于仁麟 | A kind of gasket seal that flow dividing structure is set |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE656365C (en) * | 1938-02-04 | Bergedorfer Eisenwerk Akt Ges | Seal for heat exchange plates | |
DE1185873B (en) * | 1960-01-20 | 1965-01-21 | Leybolds Nachfolger E | Method and device for sealing ultra-high vacuum flange connections |
GB1095773A (en) * | 1964-04-03 | 1967-12-20 | Serck Radiators Ltd | Plate-type heat exchangers and plates therefor |
FR1430760A (en) * | 1965-04-21 | 1966-03-04 | Apv Co Ltd | Advanced sealing for flat heat exchanger elements |
SE302468B (en) * | 1965-12-29 | 1968-07-22 | Alfa Laval Ab | |
GB1194436A (en) * | 1968-05-08 | 1970-06-10 | Nat Res Dev | Unions between Tubular Members |
GB1273139A (en) * | 1968-09-24 | 1972-05-03 | Serck Radiators Ltd | Plate heat exchangers or filters |
GB1297161A (en) * | 1969-01-10 | 1972-11-22 | ||
GB1375942A (en) * | 1973-01-05 | 1974-12-04 | Revertex Ltd | Fluid pressure seals |
US3869963A (en) * | 1973-11-09 | 1975-03-11 | Singer Co | Hydraulic actuator having a self-aspirating actuator rod seal |
-
1980
- 1980-08-12 BR BR8005069A patent/BR8005069A/en unknown
- 1980-08-12 DE DE8080302777T patent/DE3065164D1/en not_active Expired
- 1980-08-12 EP EP19800302777 patent/EP0024195B1/en not_active Expired
- 1980-08-12 DE DE1980302777 patent/DE24195T1/en active Pending
- 1980-08-12 CA CA358,072A patent/CA1125739A/en not_active Expired
- 1980-08-12 IN IN591/DEL/80A patent/IN154553B/en unknown
- 1980-08-13 DK DK349180A patent/DK349180A/en unknown
- 1980-08-13 ES ES494235A patent/ES8106603A1/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106017159A (en) * | 2015-04-29 | 2016-10-12 | 青岛中正周和科技发展有限公司 | Copper alloy plate heat exchanger |
CN106017163A (en) * | 2015-04-29 | 2016-10-12 | 青岛中正周和科技发展有限公司 | Plate heat exchanger |
CN106017163B (en) * | 2015-04-29 | 2018-03-09 | 青岛中正周和科技发展有限公司 | A kind of plate type heat exchanger |
CN106017159B (en) * | 2015-04-29 | 2018-08-14 | 青岛中正周和科技发展有限公司 | A kind of copper alloy plate heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
DE3065164D1 (en) | 1983-11-10 |
DE24195T1 (en) | 1983-08-04 |
DK349180A (en) | 1981-02-14 |
ES494235A0 (en) | 1981-08-16 |
EP0024195A3 (en) | 1981-04-22 |
EP0024195A2 (en) | 1981-02-25 |
CA1125739A (en) | 1982-06-15 |
BR8005069A (en) | 1981-02-24 |
IN154553B (en) | 1984-11-10 |
ES8106603A1 (en) | 1981-08-16 |
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