US20100276114A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- US20100276114A1 US20100276114A1 US12/811,148 US81114808A US2010276114A1 US 20100276114 A1 US20100276114 A1 US 20100276114A1 US 81114808 A US81114808 A US 81114808A US 2010276114 A1 US2010276114 A1 US 2010276114A1
- Authority
- US
- United States
- Prior art keywords
- heat exchanger
- base plate
- exchanger according
- feed
- cooling fins
- 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
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
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
-
- 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
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
Abstract
Description
- The present invention concerns a heat exchanger.
- In particular, it concerns a heat exchanger that is compact and portable, onto which a tube and a head are connected to quickly cool or heat a mass or element.
- It is already known that heat exchangers exist which make use of a compressor and a fluid for heating or cooling an element.
- A disadvantage thereof is that such heat exchangers are usually large and heavy, as a result of which they are difficult to move.
- The present invention aims to remedy one or several of the above-mentioned and other disadvantages.
- To this end, the present invention concerns a heat exchanger which is composed of a base plate, several cooling fins and accumulator blocks, whereby the cooling fins are fixed to the base plate and the accumulator blocks are pressed in the base plate or provided therein, whereby the base plate and cooling fins are made of a first metal alloy, and the accumulator blocks are made of a second metal alloy whereby the second metal alloy provides for a better heat conduction than the first metal alloy.
- An advantage of a heat exchanger according to the invention is that the heat exchanger is cheaper and lighter than an embodiment that would be entirely made of the second metal alloy.
- As a result, the heat exchanger can easily form a part of a compact device with which heat can be quickly transferred.
- This is for example important to quickly warm up the muscles of sportsmen/women and athletes. It restricts the time that is required to treat the sportsmen/women while their muscles are nevertheless sufficiently warmed up.
- A second example is that a device according to the invention can also be used for certain patient treatments, offering the advantage that the treatment is speeded up and will be more efficient.
- In a preferred embodiment of a heat exchanger according to the invention, the heat exchanger is screwed down to a strut through which a fluid is guided via a tubular element.
- Such a strut is known for example from patent BE 2006/0232.
- A treatment head with a tube is preferably coupled to the heat exchanger according to the invention, whereby the head comprises two feed-through elements, such that a good heat transfer is obtained and a closed liquid circuit is realised with the heat exchanger.
- An advantage of a heat exchanger according to the preferred embodiment of the invention is that a relatively small amount of liquid must be led through the heat exchanger for a certain volume of heat transfer.
- In order to better explain the characteristics of the invention, the following preferred embodiments of a heat exchanger according to the invention are described by way of example only, without being limitative in any way, with reference to the accompanying drawings, in which:
-
FIG. 1 schematically represents a heat exchanger according to the invention, seen in perspective; -
FIGS. 2 and 3 are sections ofFIG. 1 according to lines II-II and III-III respectively; -
FIG. 4 shows a preferred embodiment of a heat exchanger according to the invention; -
FIG. 5 shows the construction of the above-mentioned embodiment fromFIG. 4 ; -
FIG. 6 shows a preferred embodiment of the heat exchanger, coupled to a treatment head; -
FIGS. 7 up to 13 included show details of the treatment. -
FIG. 1 shows a heat exchanger 1 according to the invention which is provided with abase plate 2 andcooling fins 3. - The
base plate 2 andcooling fins 3 are preferably made of aluminium, and thecooling fins 3 are glued to thebase plate 3. -
FIG. 1 also shows how the base plate is provided with grooves 4 in which thecooling fins 3 are arranged for more lateral rigidity. Some of the outer cooling fins are hereby partly cut out on either side of the angles situated at the top and at the front. -
FIGS. 2 and 3 show howaccumulator blocks 6 are pressed in the bottom of thebase plate 2, whereby theaccumulator blocks 6 are made of a material which provides for a better heat conduction than the material out of which thebase block 2 and thecooling fins 3 are made. - The
accumulator blocks 6 are preferably made of copper or a copper alloy, and thebase plate 2 and coolingfins 3 of aluminium or an aluminium alloy. - It should be noted that the
accumulator blocks 6 must not necessarily be pressed in thebase plate 2, but it is probably more appropriate in order to obtain a more durable heat exchanger 1 according to the invention, since a copper alloy is more difficult to process than an aluminium alloy, which can be easily glued. -
FIG. 4 shows a preferred embodiment of a heat exchanger 1 according to the invention whereby the heat exchanger 1 is contained in a cover plate 8 which is screwed down on thebase plate 2 by means of screws 9. The cover plate 8 hereby runs in the longitudinal direction together with thecooling fins 3. At the front, the heat exchanger 1 is covered with afan module 10 placed crosswise onto thecooling fins 3. - On either side, at the bottom of the
cover plate 2, are fixed side plates 11 under which is provided aframe 12. This frame is provided withcrosswise holes -
FIG. 5 shows the assembly of a heat exchanger 1 according toFIG. 4 and it shows how thebase plate 2, on the lower side where theaccumulator blocks 6 are situated, is screwed down to astrut 15 through which a fluid is led by two (or several) tubular elements 16. - Such a
strut 15 is disclosed in patent BE 2006/0232. For the sake of completeness, it should be mentioned that such astrut 15 has a predominantly U-shaped cross section with a back wall on which is each time provided a protruding leg on two opposite edges, which legs are provided with a cross collar on their free edges extending to the outside of the U-shaped strut, whereby the outside' of the back wall is entirely or almost entirely flat, and whereby thestrut 15 is provided with a tubular element 16 on its open side, made in one piece with thestrut 15 and extending parallel to the legs. - An advantage of such a
strut 15 is that it can be extruded and, consequently, it can be made in many different sizes and in an economical manner. -
FIG. 5 also shows how little chunks 17 are provided in theangles 5 where the recesses of thecooling fins 3 are situated, such that thefan module 10 can be screwed down on them by means of screws 9. - The assembly is completed with a U-shaped
pipe 18 which connects the two elements 16 of thestrut 15 to one another. Apart from that, bushes 19 andrings 20 are used to guide the screws 9 of different lengths through. - The use of a heat exchanger 1 according to the invention is simple and as follows.
-
FIGS. 1 to 3 included show that the essence of the heat exchanger 1 consists of the use ofaccumulator blocks 6 which make contact with abase plate 2 andcooling fins 3. Since the accumulator blocks 6 conduct the heat better than thebase plate 2 and coolingfins 3, they can be made more compact so as to remove the required amount of heat. - As mentioned above, the
accumulator blocks 6 are preferably made of copper or a copper alloy, and thebase plate 2 and coolingfins 3 of aluminium or an aluminium alloy. - Thus is obtained a heat exchanger 1 which combines the good heat conductivity of the copper alloy with the lighter weight and the lower cost price of an aluminium alloy in order to obtain a light and compact device which can quickly remove a required amount of heat.
- In order to obtain a heat transfer over the
accumulator blocks 6 that is as large as possible, the latter are made as smooth as possible, since roughness has a negative effect on the heat transfer. Theblocks 6 might for example be polished to an average maximal roughness height of 4 m. - The working of a preferred embodiment of the heat exchanger 1 to be used in such a device which is not shown in the figures can be best explained by means of
FIGS. 4 and 5 . - If one wishes to cool an element quickly, a circuit with a cooling liquid can be led through the heat exchanger 1 via the
feed hole 13. The tubular elements 16 of thestrut 15 will then give off the heat to theaccumulator blocks 6 which in turn will transfer the heat to thebase plate 2 and thecooling fins 3. The produced heat is sucked in by thefan module 10 and blown into the atmosphere. The U-shapedpipe 18 makes sure that the cooling liquid is led via a loop formed of two tubular elements 16 in the case of the present figure, and that the heat is transferred to twoaccumulator blocks 6. - The cooling liquid then leaves the heat exchanger 1 via the
outlet 14. To thisoutlet 14 can be coupled a tube or a pipe having a treatment head at its far end. This is appropriate for the physiotherapy treatment of sportsmen/women and patients. - The heat exchanger 1 may also work with a closed liquid circuit for the physiotherapy treatment of sportsmen/women, as is schematically shown in
FIG. 6 . - The
treatment head 21 is then connected to the heat exchanger 1 by means of a tube 22. -
FIG. 7 shows how thetreatment head 21 is formed of a head or a tip 23, abody 24 and a connecting piece 25. In the body are provided a small feed-throughelement 26 and a large feed-throughelement 27. Optionally, also a Peltier element 28 could be provided in thebody 24. - By connecting this Peltier element 28 to a power source, the heat transfer or the cooling power can be accurately adjusted and the thermal expansions of the feed-through
elements -
FIGS. 8 and 9 show how the small feed-throughelement 26 is provided at the back with a preferably cylindrical,wider part 29 which changes in a preferably cylindrical,narrow part 30 towards the front, i.e. to the tip side of thetreatment head 21. Thewider part 29 is provided withoutside thread 31 on its (casing) surface. The small feed-throughelement 26 also has a supply opening 32 and a return opening 33. Optionally,additional holes 34 may be provided which may possibly serve for the use of screws. -
FIG. 10 shows how the large feed-throughelement 27 is provided with a preferably cylindrical,narrow part 35 which changes in a preferably cylindrical,wider part 36 towards the front, i.e. towards the tip side of thetreatment head 21. Thenarrow part 35 is hollow and provided withinternal thread 37 extending over a certain length at the back in thecavity 38, i.e. on the side of the connecting piece 25 of thetreatment head 21.Additional holes 39 may be optionally provided in thewider part 36, which may possibly serve to fix screws in. - The cross sections as shown in
FIGS. 11 , 12 and 13 show that the dimensions of the small feed-throughelement 26 and the large feed-throughelement 27 are such that the diameter of thewider part 29 of the small feed-throughelement 26 is practically equal to the inner diameter of thenarrow part 35 of the large feed-throughelement 27, such that theouter thread 31 of the small feed-throughelement 26 can mesh with theinner thread 37 of the large feed-throughelement 27 and both feed-throughelements - The
cavity 38 of the large feed-throughelement 27 is preferably provided with astop 40 which can be used for thewider part 29 of the small feed-throughelement 26. In the part of thecavity 38 which is screened by thestop 40 towards the tip side is preferably provided a secondinternal thread 41. - Preferably, the height of the ribs of the above-mentioned
second screw thread 41 is such that the inner diameter of this part of thecavity 38 is practically as large or somewhat larger than the external diameter of thenarrow part 30 of the small feed-throughelement 26. -
FIGS. 6 and 13 show how, when the feed-throughelements treatment head 21, a closed liquid circuit is created together with the heat exchanger 1. Arrow A inFIG. 6 shows how the cooling liquid leaves the housing of the heat exchanger 1 via theoutlet opening 14 and flows to the large feed-throughelement 27 via the supply opening 32 according to arrow C via thesupply duct 22A of the tube 22 according to arrows A′ and A″. Theinner thread 41 is preferably made such that the cooling liquid flows between the ribs of theinner thread 41 and follows the helical line towards the tip side of thetreatment head 21. - As the
cavity 38 at thestop 40 has an inner diameter which is almost equal to the outer diameter of thenarrow part 30 of the small feed-throughelement 26, an immediate flow-back is avoided and an efficient flow of the cooling liquid to the tip side according to arrow C is obtained. - Via the
return opening 33, the cooling liquid is driven according to arrow B″ from the large feed-throughelement 27 to thereturn duct 22B of the tube 22 and thus to theinlet 13 of theframe 12 of the heat exchanger 1. - An advantage of the above-described embodiment of the
treatment head 21 is that, thanks to the large contact surface over and between the ribs of theinner thread 41, a more efficient heat transfer is obtained. - The feed-through
elements - Compared to a traditional treatment head, the above-described embodiment of a heat exchanger 1 with a
treatment head 21 aims to cool down from 40° to 2° C. in one minute and a half; with a traditional treatment head, this would take three minutes. When treating tennis players, for example, for whom only 90 seconds of treatment is allowed between two games of a match, the physiotherapy treatment of spasms will be far more efficient. - It is clear that the heat exchanger 1 with a
treatment head 27 can be realised according to many different embodiments without departing from the principle of the invention. - Thus, it is clear that a
strut 15 may have several pairs of tubular elements 16 which connect at the top with several pairs ofaccumulator blocks 6 and haveU-shaped pipes 18 on alternating sides, such that the cooling liquid is led several times over the heat exchanger 1. There will beseveral inlets 13 andoutlets 14 then, of which at least oneinlet 13 can be connected to areturn duct 22B and at least oneoutlet 14 can be connected to asupply duct 22A of a tube 22. - It is also clear that the heat exchanger can be used to quickly heat a liquid whereby the heat transfer then takes place in the opposite sense from the one described above.
- As a practical example of a heat exchanger 1 according to the invention to be used for the treatment of sportsmen/women and patients, we think of a device weighing less than 10 kg, preferably less than 5 kg and even better still less than 3 kg, whereby it uses litre of cooling liquid in the latter case in order to be able to treat sportsmen/women for some ten minutes and patients for some 20 to 30 minutes. The cover plate 8 hereby has a length of some 25 cm and the lower frame measures some 20 by 20 cm. This device replaces a compressor weighing 30 kg and which consequently is difficult to move. A device according to the invention, however, is compact and can be easily carried, such that a sportsman/woman can for example be treated on the sports field itself instead of in a practice.
- Optionally, sensors are provided in the
frame 12 to measure the temperatures for different positions within the heat exchanger 1 or to measure how much cooling liquid is flowing through the heat exchanger 1. It is clear that additional options may be provided. - It should be noted that in the above description, the longitudinal and cross direction, the front and rear side and the upper and lower side specifically refer to the drawings for simplicity's sake, but it is clear that they depend on the position of the observer and that they do not restrict the essence of the invention in any way.
- The present invention is by no means restricted to the embodiments described above and represented in the accompanying drawings; on the contrary, a massive cardboard heat exchanger according to the invention can be made in all sorts of ways while still remaining within the scope of the invention.
Claims (15)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2007/0623 | 2007-12-31 | ||
BE2007/0623A BE1017916A3 (en) | 2007-12-31 | 2007-12-31 | HEAT EXCHANGER. |
PCT/BE2008/000105 WO2009082786A2 (en) | 2007-12-31 | 2008-12-29 | Heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100276114A1 true US20100276114A1 (en) | 2010-11-04 |
Family
ID=39686601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/811,148 Abandoned US20100276114A1 (en) | 2007-12-31 | 2008-12-29 | Heat exchanger |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100276114A1 (en) |
EP (1) | EP2232188A2 (en) |
BE (1) | BE1017916A3 (en) |
WO (1) | WO2009082786A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11262140B2 (en) * | 2018-09-30 | 2022-03-01 | Tyco Electronics (Shanghai) Co. Ltd. | Heat sink and housing assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103379803A (en) * | 2012-04-28 | 2013-10-30 | 昆山广禾电子科技有限公司 | Cooling fin module with improved structure |
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US20090154102A1 (en) * | 2007-12-12 | 2009-06-18 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat dissipation device |
US8475508B2 (en) * | 2008-05-15 | 2013-07-02 | Ryan R Munson | Therapeutic cooling system |
US20110110042A1 (en) * | 2009-11-12 | 2011-05-12 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Electronic device assembly with heat dissipation device |
US20130048251A1 (en) * | 2011-08-29 | 2013-02-28 | Foxconn Technology Co., Ltd. | Heat dissipation device incorporating heat spreader |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11262140B2 (en) * | 2018-09-30 | 2022-03-01 | Tyco Electronics (Shanghai) Co. Ltd. | Heat sink and housing assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2009082786A3 (en) | 2009-10-15 |
WO2009082786A2 (en) | 2009-07-09 |
EP2232188A2 (en) | 2010-09-29 |
BE1017916A3 (en) | 2009-11-03 |
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