MX2012003088A - Multi tube heat exchanger. - Google Patents

Multi tube heat exchanger.

Info

Publication number
MX2012003088A
MX2012003088A MX2012003088A MX2012003088A MX2012003088A MX 2012003088 A MX2012003088 A MX 2012003088A MX 2012003088 A MX2012003088 A MX 2012003088A MX 2012003088 A MX2012003088 A MX 2012003088A MX 2012003088 A MX2012003088 A MX 2012003088A
Authority
MX
Mexico
Prior art keywords
heat exchanger
extrusion
ports
heat
systems
Prior art date
Application number
MX2012003088A
Other languages
Spanish (es)
Inventor
Richard Lang Joergensen
Jeffrey L Insalaco
Original Assignee
Norsk Hydro As
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norsk Hydro As filed Critical Norsk Hydro As
Publication of MX2012003088A publication Critical patent/MX2012003088A/en

Links

Classifications

    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0472—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 bent, e.g. in a serpentine or zig-zag the conduits being helically or spirally coiled
    • 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
    • F28F1/14—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 longitudinally
    • F28F1/22—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 longitudinally the means having portions engaging further tubular elements
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/007—Condensers
    • 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
    • F28F1/14—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 longitudinally
    • F28F1/16—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 longitudinally the means being integral with the element, e.g. formed by extrusion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Abstract

Heat exchanger for heat exchange or heat recovery in systems such as refrigeration or heat pump systems, in particular a condenser or evaporator in such systems The heat exchanger is shaped of a multi-port aluminium extrusion (8) by bending and forming parallel loops. Each of the ends of the extrusion (8) are finally bent such that they are facing each other and are connected at an offset of one port or hole (9) and thereby creating a single helical loop unit with inlet and outlet ports (15 respectively 16).

Description

EXCHANGED] * HEAT OF MULTIPLE PIPES Description of the invention The present invention relates to a heat exchanger for heat exchange or heat recovery in systems such as cooling systems or heat pump, in particular a condenser or evaporator in these systems.
Many distributors of non-alcoholic beverages and display coolers use a steel heat exchanger as the condensing unit in their cooling system. The steel heat exchanger is commonly manufactured as a two-piece construction made of steel pipe and steel sheet material or wire that are joined together through mechanical fastening or spot welding and subsequently, are finally configured in the desired form (see the description below). A tube and sheet type heat exchanger is known, for example, from U.S. Patent No. 7, 140.25.
However, the thermal capacity of the steel heat exchanger or condenser is limited by two main factors, namely the thermal conductivity and the physical connection (usually welded by points) between the tube and the sheet / wire that reduces the transfer of energy and REF. 228634 represents a bottleneck for thermal flow. Furthermore, even when steel material as such is economical compared to other materials used in heat exchangers, manufacturing is relatively expensive due to the number of manufacturing stages.
From the documents US 4, 852, 233 and US 5, 729, 995, different types of aluminum multi-port (multiple-hole) extruded tube heat exchangers are additionally known wherein the tube is bent into parallel turns of tube forming a "Stacking" of rectangular heat exchanger with one inlet at one end and one outlet at the other end for which fluid is circulated. A disadvantage with these known solutions of multiple extruded tubes is the use of a manifold that interconnects the ports at each end, which represent an additional cost for manufacturing and assembly. In addition, the efficiency of heat transfer is reduced due to poor fluid circulation.
There are also known heat exchangers and condensers of other metals, in particular copper, although these have not found extensive use, partly due to the high costs of the material and manufacture.
With the present invention, a heat exchanger is provided, in particular, a condenser for cooling systems, which is simple and inexpensive to manufacture and which has a high thermal efficiency.
The invention is characterized by the characteristics that are defined in the appended independent claim 1.
Preferred embodiments of the invention are further defined in the independent claims 2-5.
In the following, the invention will be further described in detail by way of example and with reference to the accompanying figures, wherein: Figure 1 shows in a perspective view part of a commonly known refrigeration system that includes a compressor and a steel condenser with connecting pipe, Figure 2 shows a perspective view of a tube and sheet element of a conventional steel condenser before the bending process.
Figure 3 shows the same element as in Figure 2 after the bending process, and Figure 4 shows a perspective view of an element of multiple extruded ports (multiple channels or holes) from which the heat exchanger according to the invention can be elaborated, Figure 5 shows on a much larger scale a cross section of the extruded element shown in Figure 4, Figure 6 shows the extruded element which is folded into its final form forming a heat exchanger according to the invention.
As noted above, Figure 1 shows in a perspective view part of a refrigeration system commonly known for a beverage dispenser or a display chiller unit. Figure 1 does not show a complete cooling system, but only the compressor 1 and the steel condenser 2, as well as some connection pipes for this system. The capacitor shown in Figure 1 is as I have pointed out a steel tube type capacitor with a wire mesh for improved heat transfer. In addition, the steel heat exchanger is manufactured as a two-piece construction made of steel pipe and a steel wire mesh or metal sheet that are welded together at points.
Figures 2 and 3 show an example of a known steel heat exchanger or condenser based on steel pipe and a metal foil element, wherein the steel pipe 3 is first bent into a serpentine shape, so that the Inlet end 4 and outlet end 5 are on the same side and where a metal foil 6 is welded together with the pipe 3 together. Once the two steel parts 3, 6 are joined, the condenser element It is painted by spraying for additional corrosion protection and the condenser is finally formed by bending the welded pipe by points and the sheet in a serpentine or square shape as shown in Figure 2.
However, the thermal capacitance of the steel capacitor as noted above, is limited by two main factors, namely, the thermal conductivity of the steel which is 43 w / mk, and the physical connection (welded by points) between the pipe and the sheet / wire representing a bottleneck for the thermal flow.
Figures 4-6 show the heat exchanger 10 (see in particular Figure 6 - the finished product) according to the invention. More precisely, Figure 4 shows the multi-port aluminum extrusion 8 from which the heat exchanger according to the invention is made, and Figure 5 shows a cross-section on a larger scale of this extrusion. . Its initial shape is an extruded longitudinal member or bar 8 formed as a flat "leaf" 11 with interconnected ports or channels / channels 9.
When the heat exchanger 10 is produced, the extrusion 8 as shown in Figures 4 and 5, is bent from the middle part y. outward in parallel turns like a serpentine and finally, forming a rectangular "heat exchanger" package as shown in Figure 6. The two ends of the extrusion are bent, so that they face each other, as is additionally shown in Figure 6, and are connected in a projection of a port or hole 9. This is preferably done by means of small connecting tubes 12 inserted and welded with brass between the ports or the holes 9 orienting each other from each end of the extrusion element 8, and with which, a unique helical return unit is created with the inlet and outlet ports 15, 16, respectively, preferably provided with the tube connectors 13, 14 moored therewith . The connection tubes 12 and the input / output connectors 13, 14 could be of any suitable material such as aluminum or copper.
Alternatively, instead of the separate connectors 12, 13, 14, the ends of the extrusion could be mechanically processed to remove the excess material between the ports 9 of the extrusion, whereby the ports 9 are used, such as connectors This heat exchanger according to the invention does not require "return bends" and offers a rigid construction. Thermal tests on the inventive aluminum capacitor have revealed that it has an improved thermal capacity per square unit compared to the commonly used steel capacitors that are currently dominating the market, and therefore, the present invention could replace the solutions of condenser made of steel.
The thermal conductivity of aluminum is 250 w / mxk which is more superior to steel and the profile is extruded into a piece that offers the best possible heat transfer bridge between the media on the side of the tube and the air that passes to the outside profile.
The aluminum extrusion solution according to the invention also eliminates several stages of the manufacturing process such as tube serpentine bending, sheet / wire spot welding and painting.
Aluminum is by nature self-protective against corrosion due to its ability to create a healing oxide layer or self-bonding. There is a need for additional corrosion protection that is possible, for example, by spraying zinc arc from the profile or the use of a long-life alloy such as 300048 or a combination of both.
The idea of using an extruded aluminum profile and subsequently, the deviation of the ends according to the present invention also reduces the total production process, and with that, the cost of production is significantly reduced.
The invention as defined in the claims is not limited to the example described above and was shown in the figures. In this way, the heat exchanger can be used, not only as a condenser in a cooling system, but in any system where heat is exchanged or recovered.
It is noted that in relation to this date the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (5)

CLAIMS Having described the invention as above, the content of the following claims is claimed as property:
1. A heat exchanger for heat exchange or heat recovery in systems such as cooling systems or heat pump, in particular, a condenser or evaporator in these systems, the heat exchanger is configured from an aluminum extrusion of multiple ports (8) by bending and forming of turns in parallel, characterized in that each end of the extrusion is finally bent, so that these are oriented to each other and are connected in a projection of a port or hole and with which, a unique helical turn unit is preferably created, with input and output ports, respectively.
2. The heat exchanger according to claim 1, characterized in that the ports are connected by means of small connecting tubes inserted and welded with brass between the ports or holes facing each other from each end of the extrusion element.
3. The heat exchanger according to claim 1, characterized in that each of the input and output ports is provided with tube connectors that are welded with brass thereto.
4. The heat exchanger according to claim 1, characterized in that the ends of the extrusion are mechanically processed to remove the excess material between the extrusion ports, whereby, the ports as such are used as connectors.
5. The heat exchanger according to claims 1-3, characterized in that the connection tubes and the inlet / outlet connectors are made from a suitable material such as aluminum or copper.
MX2012003088A 2009-09-18 2010-09-08 Multi tube heat exchanger. MX2012003088A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20093024 2009-09-18
PCT/NO2010/000329 WO2011034436A1 (en) 2009-09-18 2010-09-08 Multi tube heat exchanger

Publications (1)

Publication Number Publication Date
MX2012003088A true MX2012003088A (en) 2012-06-27

Family

ID=43758856

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2012003088A MX2012003088A (en) 2009-09-18 2010-09-08 Multi tube heat exchanger.

Country Status (7)

Country Link
US (1) US20120227947A1 (en)
EP (1) EP2478319B1 (en)
CN (1) CN102639955A (en)
BR (1) BR112012005900A2 (en)
IN (1) IN2012DN02287A (en)
MX (1) MX2012003088A (en)
WO (1) WO2011034436A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2962055B1 (en) * 2013-03-01 2018-05-23 Sapa AS Fin solution related to micro channel based heat exchanger
EP2962054A4 (en) * 2013-03-01 2016-11-02 Sapa As Multi port extrusion (mpe) design
DE202014004155U1 (en) * 2014-05-20 2015-08-25 Bundy Refrigeration International Holding B.V. Circular heat exchanger with molded dryer and refrigeration circuit with this heat exchanger
CN110542330B (en) * 2019-09-02 2021-02-09 枣庄学院 Water-cooled air cooler capable of being connected in multiple ways

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US2171790A (en) * 1938-07-02 1939-09-05 Universal Cooler Corp Refrigerator evaporator
US2306772A (en) * 1940-03-12 1942-12-29 Mullins Mfg Corp Sheet and tube evaporator
US2646971A (en) * 1950-06-17 1953-07-28 Raskin Walter Heat exchange unit
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US3173479A (en) * 1959-09-30 1965-03-16 Olin Mathieson Heat exchanger
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US5036909A (en) * 1989-06-22 1991-08-06 General Motors Corporation Multiple serpentine tube heat exchanger
US5704415A (en) * 1994-11-25 1998-01-06 Nippon Light Metal Co. Ltd. Winding small tube apparatus and manufacturing method thereof
CN2225010Y (en) * 1995-01-20 1996-04-17 浙江大学 Spiral band-winding sleeve for transferring heat
JP3255818B2 (en) * 1995-03-20 2002-02-12 カルソニックカンセイ株式会社 Cooling device for electronic components
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GB2416723B (en) * 2005-11-14 2007-02-14 Adal Innovation Ltd Manufacture of aluminium based heat transfer panels

Also Published As

Publication number Publication date
US20120227947A1 (en) 2012-09-13
WO2011034436A1 (en) 2011-03-24
BR112012005900A2 (en) 2016-03-15
EP2478319A1 (en) 2012-07-25
EP2478319A4 (en) 2013-12-04
EP2478319B1 (en) 2015-07-15
IN2012DN02287A (en) 2015-08-21
CN102639955A (en) 2012-08-15

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Legal Events

Date Code Title Description
GB Transfer or rights

Owner name: SAPA AS

FA Abandonment or withdrawal