GB1563673A - Method for manufacturing heat exchangers and heat exchangers therefor - Google Patents
Method for manufacturing heat exchangers and heat exchangers therefor Download PDFInfo
- Publication number
- GB1563673A GB1563673A GB5222/78A GB522278A GB1563673A GB 1563673 A GB1563673 A GB 1563673A GB 5222/78 A GB5222/78 A GB 5222/78A GB 522278 A GB522278 A GB 522278A GB 1563673 A GB1563673 A GB 1563673A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat exchanger
- plate
- neck portion
- plates
- heating
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/26—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element
- F28F1/28—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element the element being built-up from finned sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
(54) METHOD FOR MANUFACTURING HEAT EXCHANGERS,
AND HEAT EXCHANGERS THEREOF
(71) We GOULD CONTARDO S.p.A.
of Italian Nationality of 21040 Uboldo,
Varese, Italy do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be described in and by the following statement:
The present invention refers to a method for manufacturing heat exchangers particularly suitable to be employed in heating and in cooling systems, as well as to heat exchangers per se fabricated by the method.
As it is known, the conventional heat exchangers employed in heating and in cooling systems are constituted by suitably folded up tubes provided on their outer surface with heat transfer fins.
The appliance of said fins on the surface of the tube is generally made by welding.
The welding operation, besides being laborious and long, does not assure the obtaining of the best results of efficiency.
This is because the dimensions of the fins, as well as their reciprocal closeness, do not allow the welding to be perfectly and completely executed, so that it is not possible to have all the required warranties of safety and of continuity.
Accordingly, the heat exchangers achieved by such a process present a low efficiency due to the inhomogeneity of the surfaces. Moreover, and particularly when said exchangers are employed at high temperatures, they present the disadvantage that the fins are detached easily and frequently from the tubes.
It is therefore an object of the present invention to provide a method which allows the heat exchangers to be manufactured so that they have high efficiency as well as not having the above mentioned disadvantage of the easy detaching of the fins.
According to one aspect of the present invention a method is provided for manufacturing a heat exchanger, particularly suitable to be employed in heating and cooling systems, the method comprising:
(a) deforming a copper-plated iron plate so as to obtain at the centre of the plate a projecting truncated conical neck portion,
(b) partially keying a plurality of the so deformed plates to each other by fitting the free extremity of the neck portion of one of the plates into the opposite extremity of the neck portion of an adjacent plate so that the plate assembly reproduces the shape of the required heat exchanger and,
(c) heating the assembly to a temperature at which the copper melts and flows into the interstices between the plates to form a single structure.
According to another aspect of the present invention there is provided a heat exchanger particularly suitable for heating and cooling systems, the heat exchanger comprising a plurality of copper-plated iron plates, each plate being provided at its centre with a projecting truncated conical neck portion, the free extremity of the neck portion of each plate being bonded to the opposite neck portion of an adjacent plate to form a structure reproducing the shape of the required heat exchanger, the bond being formed by copper melting and flowing into the interstices between the plates as a result of a prior heating of the structure.
The height of the truncated conical neck may range at pleasure depending on the desired distance between the plates which represent the heat transfer fins of the finished exchanger. The temperature of heating, which the exchanger is subjected to. is preferably about 1100 C.
The heat exchanger so produced appears as a single structure of solidly joined elements, provided with a regular and continuous central channel for the circulation of the admitted liquid and with heat transfer fins solidly and at regular distances placed all over its surface.
The functional and constructive characteristics of the heat exchanger of this invention, as well as its method of manufacturing, may better be understood through the following description which refers to the figures of the enclosed drawing showing a preferred exemplifying but not limiting embodiment of the present heat exchanger, in which
Figure 1 shows a partially sectioned side view of this heat exchanger;
Figure 2 shows the side view of the cross-section of one of the elements constituting the heat exchanger of figure 1; and
Figure 3 shows a plan view of the element of figure 2.
Referring now to the figures, the method in object consists in getting by direct pressing a truncated conical neck portion (11) at the center of a plate (10). The plate (10) is made by pressing a plate of copper-plated iron. The individual plates (10) are keyed one to the other by partial fitting of the free extremity of the neck portion (11) of one of the plates on the other extremity of the neck of an other plate. The taper and the diameter of the neck portion (11) are regulated so that the individual plates (10) may be partially keyed one to the other so as to allow the plates to remain suitably spaced.
It is of course possible to join together as many plates (10) as are necessary to form heat exchanger having a suitable length for the desired use. Furthermore, two or more heat exchangers formed in the manner described may be joined together in a non-linear or angled arrangement by means of suitable connectors applied at the ends of the heat exchangers.
Because each plate (10) is copper plated, after their joining in lines in order to form the required heat exchanger, the assembly is placed in an oven at a controlled temperature of 1000" - 1100 C, so that the weld material melts and carries out a brazing which assures the solid joining of each of the several plate elements (10) as well as the perfect seal of the tube which is formed by the joining of the several neck portions (11).
According to the above mentioned description. it is evident that the present method for manufacturing heat exchangers is very simple, quick and cheap, besides to allow to achieve a finished product in keeping with all the requirements of functionality and of appliance.
In the practical carrying out of the present method several changes and modifications may be made within the scope of the present invention as defined in the appendant
Claims (10)
1. A method for manufacturing a heat exchanger particularly suitable to be employed in heating and cooling systems, the method comprising:
(a) deforming a copper-plated iron plate so as to obtain at the centre of the plate a projecting truncated conical neck portion,
(b) partially keying a plurality of the so deformed plates to each other by fitting the free extremity of the neck portion of one of the plates into the opposite extremity of the neck portion of an adjacent plate so that the plate assembly reproduces the shape of the required heat exchanger and,
(c) heating the assembly to a temperature at which the copper melts and flows into the interstices between the plates to form a single structure.
2. A method as claimed in claim 1, in which the temperature is about 1100 C.
3. A method as claimed in claim 1 or claim 2, in which the plate is deformed by pressing.
4. A heat exchanger element for use in forming a heat exchanger by any of the methods claimed in claims 1 to 3, the element comprising a copper-plated iron plate which is provided at its centre with a projecting truncated conical neck portion.
5. A heat exchanger particularly suitable for heating and cooling systems, the heat exchanger comprising a plurality of copper-plated iron plates, each plate being provided at its centre with a projecting truncated conical neck portion, the free extremity of the neck portion of each plate being bonded to the opposite neck portion of an adjacent plate to form a structure reproducing the shape of the required heat exchanger, the bond being formed by copper melting and flowing into the interstices between the plates as a result of a prior heating of the structure.
6. A heat exchanger whenever formed by any of the methods claimed in claims 1 to 3.
7. A heat exchanger constituted by a plurality of the elements claimed in claim 4.
8. A method for manufacturing a heat exchanger particularly suitable for heating and cooling systems substantially as hereinbefore described with reference to the accompanying drawings.
9. A heat exchanger substantially as hereinbefore described with reference to
Figure 1.
10. A heat exchanger element substantially as hereinbefore described with reference to the drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5222/78A GB1563673A (en) | 1978-02-09 | 1978-02-09 | Method for manufacturing heat exchangers and heat exchangers therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5222/78A GB1563673A (en) | 1978-02-09 | 1978-02-09 | Method for manufacturing heat exchangers and heat exchangers therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1563673A true GB1563673A (en) | 1980-03-26 |
Family
ID=9792012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5222/78A Expired GB1563673A (en) | 1978-02-09 | 1978-02-09 | Method for manufacturing heat exchangers and heat exchangers therefor |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1563673A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129538A (en) * | 1982-11-03 | 1984-05-16 | Eric Smith | Heat exchanger |
| FR2728668A1 (en) * | 1994-12-22 | 1996-06-28 | Valeo Thermique Habitacle | Finned heat exchanger operating between first gaseous fluid and second flowing fluid |
-
1978
- 1978-02-09 GB GB5222/78A patent/GB1563673A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129538A (en) * | 1982-11-03 | 1984-05-16 | Eric Smith | Heat exchanger |
| FR2728668A1 (en) * | 1994-12-22 | 1996-06-28 | Valeo Thermique Habitacle | Finned heat exchanger operating between first gaseous fluid and second flowing fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3339260A (en) | Method of producing heat exchangers | |
| US3710473A (en) | Method of manufacturing a heat exchanger | |
| US2389175A (en) | Method of making heat exchange apparatus | |
| US4744505A (en) | Method of making a heat exchanger | |
| US4858686A (en) | Heat exchanger | |
| US4072262A (en) | Method of fabricating a solar heating unit | |
| US2722048A (en) | Method of making heat exchangers | |
| US2396522A (en) | Radiator tube construction | |
| GB1563673A (en) | Method for manufacturing heat exchangers and heat exchangers therefor | |
| US2339284A (en) | Heat transfer element | |
| US2226243A (en) | Heat exchange unit and method of making same | |
| US2191631A (en) | Brazing of thin metal structures | |
| US4476856A (en) | Process for the production of a solar collector panel assembly and a panel assembly produced thereby | |
| US2206286A (en) | Radiator manufacture | |
| US2577124A (en) | Bonding unhexed tubes | |
| US3238606A (en) | Heat exchanger manufacture | |
| US1750643A (en) | Welding copper and the like | |
| KR870009804A (en) | Solderless bonding without solvent and heat exchanger manufactured by the method | |
| JPS6113991Y2 (en) | ||
| US3601878A (en) | Method for fabricating a heat exchanger | |
| GB1288498A (en) | ||
| JPS5828332A (en) | Fusion-bonding method for thermoplastic resin hollow units | |
| US2147709A (en) | Tinned copper radiator fin | |
| US2133990A (en) | Radiator manufacture | |
| JP6215025B2 (en) | Heat transfer brazing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |