EP0099627A2 - Improvements relating to heat exchangers - Google Patents
Improvements relating to heat exchangers Download PDFInfo
- Publication number
- EP0099627A2 EP0099627A2 EP83302977A EP83302977A EP0099627A2 EP 0099627 A2 EP0099627 A2 EP 0099627A2 EP 83302977 A EP83302977 A EP 83302977A EP 83302977 A EP83302977 A EP 83302977A EP 0099627 A2 EP0099627 A2 EP 0099627A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tie
- heat exchanger
- aperture
- ties
- end portions
- 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.)
- Granted
Links
- 239000011159 matrix material Substances 0.000 claims abstract description 18
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
Definitions
- This invention relates to heat exchangers, and especially to vehicle heat exchangers such as vehicle radiators.
- One way of manufacturing such radiators is to assemble a matrix of tubes and airways between two clamping channels which are then clamped together by means of ties. Tube plates are then fitted onto the ends of the tubes. These tube plates form part of header tanks for the cooling fluid.
- the ties perform the dual function of holding the matrix together during manufacturing stages and also of resisting expansion of the radiator matrix under varying internal pressures in use of the radiator.
- Various means have been employed for attaching the ties to the clamping channels.
- the ties are welded to the channels, but this involves jigging the matrix to ensure the correct spacing of the channels when the welding operation takes place.
- the tie is a rod with threaded ends which pass through the channels to be retained in place by nuts. This operation is labour intensive however and unduly costly.
- the invention provides a heat exchanger which includes a matrix of tubes and airways located between two clamping members, at least one tie connecting the clamping members, wherein the said tie extends at each end through an aperture in a respective clamping . member, and the end portions of the said tie extend laterally with respect to the length of the tie but in different directions such that insertion of the end portions of the tie- through the apertures, and hence removal therefrom, requires resilient torsional deformation of the tie.
- each end portion has a lead-in portion arranged at an angle to the remainder of the said portion, such that when one end portion has been pushed home during assembly of the heat exchanger, the extreme end of the other lead-in portion can be pushed into the respective aperture without any substantial torsional deformation of the tie.
- the radiator is of the packed-construction type having a pair of tube plates 11 and 12 connected by a plurality of flat-section tubes 13 which extend through apertures in the tube plates to pass coolant from one header tank (defined by a tube plate and a header tank shell - not shown) to the other. Between the tubes 13 is located finning 14 comprising corrugated strips of metal, as is conventional.
- a pair of clamping channels 15 clamps the matrix together and the clamping channels are held together by means of a pair of ties on the front face and another pair on the rear face.
- the matrix of tubes and airways is built up between the clamping channels during assembly of the radiator before the tubes plates 11 and 12 are fitted in position.
- the clamping members held by the ties hold the matrix together for subsequent assembly operations.
- the tube plates 11 and 12 are added and in another the assembly is passed through an oven where the air-ways, which are solder- coated, bond to the tubes.
- the ties 16 also serve a function during subsequent use of the radiator since they resist expansion of the radiator in response to pressure pulses in the coolant. which would otherwise strain the soldered joints.
- each end portion 17 is bent at the elbow 19 to form a lead-in portion between the elbow and the tip of the end portion.
- the function of the lead-in portion is as follows.
- the portion of the end portion lying between the rod axis and the elbow is pointing upwardly and away from the other aperture.
- the lead-in portion points downwardly and towards that aperture.
- the operator thus has to slide the tie rod to align the tip of the lead-in portion with the aperture.
- Figure 1 if the left hand end of the tie is already inserted, the operator slides the right hard end upwardly as seen in Figure 1 from below the aperture 18 to insert the tip of the lead-in portion into the aperture. Thereafter, further upwards movement leads the end portion into the aperture, the axis of the rod twisting by virtue of this motion.
- the other end portion is forced hard against the channel.
- the tie When the tie is fully inserted at both ends, it may be slightly torsionally deformed, ie both end portions resiliently abutting the sides of the channel members with the elbows 19, or it may be non-deformed. In the former case, the tie tends to twist each channel member itself, but this is resisted by a cancelling force from the corresponding tie on the other face of the radiator.
- the matrix is completed by addition of the tube plates and baked in an oven in the usual way.
- each face may be replaced by one U-shaped tie which say extends from the left-hand channel (as seen in Figure 1) where it passes into an aperture and has the same shaped end portion as the tie 16, across the face of the matrix, has a U-bend around the right-hand channel, and extends back across the other face of the matrix, where it passes into an aperture in the left-hand channel (but on the other side) via its shaped end portion.
- end portions will be shaped the same as for the ties shown in the drawings except that both end portions may advantageously be directed in the same direction (when viewed along the axes of the U-shape), rather than in substantially opposite d irec- tions as shown in the drawings ( Figure 3), in order that torsional deformation is needed to withdraw the end portions.
- both end portions may advantageously be directed in the same direction (when viewed along the axes of the U-shape), rather than in substantially opposite d irec- tions as shown in the drawings ( Figure 3), in order that torsional deformation is needed to withdraw the end portions.
Landscapes
- 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)
- Clamps And Clips (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
- This invention relates to heat exchangers, and especially to vehicle heat exchangers such as vehicle radiators.
- One way of manufacturing such radiators is to assemble a matrix of tubes and airways between two clamping channels which are then clamped together by means of ties. Tube plates are then fitted onto the ends of the tubes. These tube plates form part of header tanks for the cooling fluid.
- The ties perform the dual function of holding the matrix together during manufacturing stages and also of resisting expansion of the radiator matrix under varying internal pressures in use of the radiator. Various means have been employed for attaching the ties to the clamping channels. For example, in one arrangement the ties are welded to the channels, but this involves jigging the matrix to ensure the correct spacing of the channels when the welding operation takes place. In another arrangement the tie is a rod with threaded ends which pass through the channels to be retained in place by nuts. This operation is labour intensive however and unduly costly. Again, it has been proposed to bend the ends of the tie through a right angle and insert them through apertures in the channels perpendicularly to the axis of the tie; it has been found however that under some circumstances the tie members can jump out of the apertures.
- The invention provides a heat exchanger which includes a matrix of tubes and airways located between two clamping members, at least one tie connecting the clamping members, wherein the said tie extends at each end through an aperture in a respective clamping . member, and the end portions of the said tie extend laterally with respect to the length of the tie but in different directions such that insertion of the end portions of the tie- through the apertures, and hence removal therefrom, requires resilient torsional deformation of the tie.
- This provides a simple method of holding the clamping members together which avoids the disadvantages mentioned, but one in which the ties cannot pop out.
- Normally at least two ties will be provided for each face of the matrix, and thus the tubes and airways will be located against movement perpendicular to the plane of the matrix as well as in the plane of the matrix. Advantageously, the end portions are so angled with respect to each other that the tie remains resiliently torsionlly deformed after insertion so that the end portions act as spring clips holding the tie against the clamping members. Preferably, each end portion has a lead-in portion arranged at an angle to the remainder of the said portion, such that when one end portion has been pushed home during assembly of the heat exchanger, the extreme end of the other lead-in portion can be pushed into the respective aperture without any substantial torsional deformation of the tie.
- A heat exchanger which is a motor vehicle radiator, constructed in accordance with the invention, will now be described by way of example with reference to the accompanying drawings, in which:
- Figure 1 is a front view of the radiator;
- Figure 2 is a section taken through the lines A-A in Figure 1;
- Figure 3 is an enlarged view of a tie looking along its length; and
- Figure 4 is an enlarged view, on the same scale as Figure 3, of an end of the tie.
- Referring to the drawings, the radiator is of the packed-construction type having a pair of
tube plates 11 and 12 connected by a plurality of flat-section tubes 13 which extend through apertures in the tube plates to pass coolant from one header tank (defined by a tube plate and a header tank shell - not shown) to the other. Between thetubes 13 is located finning 14 comprising corrugated strips of metal, as is conventional. - A pair of
clamping channels 15 clamps the matrix together and the clamping channels are held together by means of a pair of ties on the front face and another pair on the rear face. - The matrix of tubes and airways is built up between the clamping channels during assembly of the radiator before the
tubes plates 11 and 12 are fitted in position. The clamping members held by the ties hold the matrix together for subsequent assembly operations. In one of the subsequent operations, thetube plates 11 and 12 are added and in another the assembly is passed through an oven where the air-ways, which are solder- coated, bond to the tubes. - The
ties 16 also serve a function during subsequent use of the radiator since they resist expansion of the radiator in response to pressure pulses in the coolant. which would otherwise strain the soldered joints. - It will be seen from Figure 3 that the
end portions 17 of the tie rod are bent laterally with respect to the axis of therod 20 but extend in different directions, actually more or less in opposite directions. It will thus be apparent from Figure 1 that thetie 16 cannot be simply pulled out of theapertures 18 in thechannel 15 by a movement at right angles to the plane cf the matrix. In fact, in order to withdraw the rod, it is necessary for it to be torsionally deformed or twisted about its axis. Referring to Figure 3, it is necessary for example for the righthand end portion 17 to be raised from a roughly horizontal to a roughly vertical position without moving the left hand end portion (since this will be pressed against the channel), in order for the righthand end poriton 17 to be withdrawn from its aperture. Accordingly, the tie is securely located in position and cannot jump out accidentally. - In order to assist in insertion of the ties, each
end portion 17 is bent at theelbow 19 to form a lead-in portion between the elbow and the tip of the end portion. The function of the lead-in portion is as follows. When one end of the tie has been passed through theaperture 18 in onechannel 15, the portion of the end portion lying between the rod axis and the elbow is pointing upwardly and away from the other aperture. The lead-in portion points downwardly and towards that aperture. The operator thus has to slide the tie rod to align the tip of the lead-in portion with the aperture. For example, in Figure 1, if the left hand end of the tie is already inserted, the operator slides the right hard end upwardly as seen in Figure 1 from below theaperture 18 to insert the tip of the lead-in portion into the aperture. Thereafter, further upwards movement leads the end portion into the aperture, the axis of the rod twisting by virtue of this motion. The other end portion is forced hard against the channel. - When the tie is fully inserted at both ends, it may be slightly torsionally deformed, ie both end portions resiliently abutting the sides of the channel members with the
elbows 19, or it may be non-deformed. In the former case, the tie tends to twist each channel member itself, but this is resisted by a cancelling force from the corresponding tie on the other face of the radiator. - After assembly of the tie rods, the matrix is completed by addition of the tube plates and baked in an oven in the usual way.
- Instead of employing two ties extending across each face of the radiator, the upper ties (as seen in Figure 1)"on each face may be replaced by one U-shaped tie which say extends from the left-hand channel (as seen in Figure 1) where it passes into an aperture and has the same shaped end portion as the
tie 16, across the face of the matrix, has a U-bend around the right-hand channel, and extends back across the other face of the matrix, where it passes into an aperture in the left-hand channel (but on the other side) via its shaped end portion. The end portions will be shaped the same as for the ties shown in the drawings except that both end portions may advantageously be directed in the same direction (when viewed along the axes of the U-shape), rather than in substantially opposite direc- tions as shown in the drawings (Figure 3), in order that torsional deformation is needed to withdraw the end portions. However, it may be found satisfactory for the end portions to point in roughly opposite directions since the U-bend itself resists twisting of the tie.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08220954A GB2123943B (en) | 1982-07-20 | 1982-07-20 | Improvements relating to heat exchangers |
GB8220954 | 1982-07-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0099627A2 true EP0099627A2 (en) | 1984-02-01 |
EP0099627A3 EP0099627A3 (en) | 1984-06-06 |
EP0099627B1 EP0099627B1 (en) | 1986-08-27 |
Family
ID=10531782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19830302977 Expired EP0099627B1 (en) | 1982-07-20 | 1983-05-24 | Improvements relating to heat exchangers |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0099627B1 (en) |
JP (1) | JPS59122896A (en) |
DE (1) | DE3365616D1 (en) |
GB (1) | GB2123943B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0635693A2 (en) * | 1993-07-23 | 1995-01-25 | Modine Manufacturing Company | Tie bar clip construction for heat exchangers |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5014771A (en) * | 1990-09-17 | 1991-05-14 | General Motors Corporation | Heat exchanger core reinforcement |
FR2674014B1 (en) * | 1991-03-12 | 1993-05-28 | Valeo Thermique Moteur Sa | HEAT EXCHANGER WITH CONNECTED WATER BOXES FOR MOTOR VEHICLES. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1962466A1 (en) * | 1968-12-13 | 1970-07-02 | Ferodo Sa | Heat exchanger in the manner of a pipe cooler |
DE3045087A1 (en) * | 1980-11-29 | 1982-07-01 | Kühlerfabrik Längerer & Reich, 7024 Filderstadt | Motor vehicle radiator with parallel tubes - has in one side wall clamping wedge retaining tie rod in fixed position |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB900225A (en) * | 1959-06-25 | 1962-07-04 | Lawrence Holdings Overseas Ltd | Improvements relating to secondary surface heat exchangers of the fin and tube type |
FR1589869A (en) * | 1968-10-23 | 1970-04-06 | ||
FR2194928B1 (en) * | 1972-08-04 | 1975-03-07 | Chausson Usines Sa | |
FR2418695A1 (en) * | 1978-03-02 | 1979-09-28 | Chausson Usines Sa | PROCESS FOR THE MANUFACTURING OF RADIATOR BEAMS WITH WAVEL TUBES AND DISSIPATORS AND DEVICE FOR ITS IMPLEMENTATION |
GB2064751B (en) * | 1979-12-10 | 1983-10-19 | Imi Marston Radiator Services | Radiator core and method of assembly |
-
1982
- 1982-07-20 GB GB08220954A patent/GB2123943B/en not_active Expired
-
1983
- 1983-05-24 DE DE8383302977T patent/DE3365616D1/en not_active Expired
- 1983-05-24 EP EP19830302977 patent/EP0099627B1/en not_active Expired
- 1983-07-20 JP JP13265083A patent/JPS59122896A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1962466A1 (en) * | 1968-12-13 | 1970-07-02 | Ferodo Sa | Heat exchanger in the manner of a pipe cooler |
DE3045087A1 (en) * | 1980-11-29 | 1982-07-01 | Kühlerfabrik Längerer & Reich, 7024 Filderstadt | Motor vehicle radiator with parallel tubes - has in one side wall clamping wedge retaining tie rod in fixed position |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0635693A2 (en) * | 1993-07-23 | 1995-01-25 | Modine Manufacturing Company | Tie bar clip construction for heat exchangers |
EP0635693A3 (en) * | 1993-07-23 | 1995-05-03 | Modine Mfg Co | Tie bar clip construction for heat exchangers. |
Also Published As
Publication number | Publication date |
---|---|
GB2123943B (en) | 1985-08-07 |
GB2123943A (en) | 1984-02-08 |
JPS59122896A (en) | 1984-07-16 |
EP0099627A3 (en) | 1984-06-06 |
DE3365616D1 (en) | 1986-10-02 |
EP0099627B1 (en) | 1986-08-27 |
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