EP2112438A2 - Échangeur de chaleur pour fluides - Google Patents
Échangeur de chaleur pour fluides Download PDFInfo
- Publication number
- EP2112438A2 EP2112438A2 EP09158161A EP09158161A EP2112438A2 EP 2112438 A2 EP2112438 A2 EP 2112438A2 EP 09158161 A EP09158161 A EP 09158161A EP 09158161 A EP09158161 A EP 09158161A EP 2112438 A2 EP2112438 A2 EP 2112438A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- resistance element
- tube
- heat exchanger
- brackets
- connectors
- 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.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title claims description 11
- 238000005219 brazing Methods 0.000 claims abstract description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 abstract description 2
- 239000012212 insulator Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
- F24H1/162—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled using electrical energy supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
- F28D7/0016—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being bent
-
- 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
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
Definitions
- the present invention relates to a heat exchanger for fluids.
- Heating devices used in household electrical appliances washing machines, dishwashers, coffee makers, etc. are known, the operating cycle of which uses heated water which is made to circulate through a suitable utilization circuit.
- a first known type of heat exchanger consists of a body made of cast aluminium incorporating a resistance element and a spiral tube though which a fluid flows.
- This heat exchanger has however the drawback of high cost and the impossibly of undergoing modification to meet unforeseen requirements.
- Another heat exchanger consists of a double-U aluminium profile in which one tube houses the resistance element and the other forms the fluid collector.
- This device has the drawback of high dispersion and requires specific equipment for its construction.
- a third type of heat exchanger consists of an aluminium sleeve internally lined with Teflon and housing an armoured resistance element within the tube wall.
- This heat exchanger has the drawback of high cost due mainly to the Teflon coating and its die casting procedure.
- a fourth device consists of a resistance element spiral wound about a steel tube and braze-welded to it.
- This device has the drawback of high dispersion and the high cost of the braze-welding equipment.
- Another device consists of two aluminium plates forming the fluid circuit and incorporating the resistance element, which is fixed by pressure.
- This device has the drawback of a high die cost and a high assembly cost for the various parts.
- Another device consists of a stainless steel tube through which the fluid passes and in which a resistance element is welded.
- This device has the drawback of limestone formation as the fluid is directly in contact with the resistance element, and is of high cost.
- An object of the invention is to eliminate these drawbacks by providing a heat exchanger which not only enables fluids to be heated but which for certain applications enables the fluid to be brought into the vapour phase.
- Another object of the invention is to provide a heat exchanger having good thermal efficiency and a high modularity.
- Another object of the invention is to enable adequate temperature control possibly by thermostats.
- Another object of the invention is to achieve intrinsic "safety" against overtemperature, being constructed of materials which resist temperatures up to 650°0 without undergoing deterioration.
- Another object of the invention is to provide a heat exchanger requiring low specific investment and hence having a competitive cost.
- the heat exchanger of the invention comprises substantially a U-shaped armoured resistance element 2 constructed of stainless steel and provided at its ends with insulator 4 from which push-on connectors 6 emerge for connection to the electric mains cables.
- a metal tube 8 preferably of stainless steel, but high nickei/chromium content alloys could be used, is wound as a spiral about the resistance element 2.
- the tube 8 is secured by brazing with (nickel) alloys able to reliably withstand the maximum operating temperature of the resistance element and to adequately transmit the heat generated by the resistance element to the tube.
- the tube is provided at its ends with connectors 10 of gas type for its connection to the hydraulic circuit.
- the resistance element 2 and the tube 8 are braze-welded to two C-shaped brackets 12 with their flanges 14 provided with holes 16 for fixing to a support structure (not shown in the drawings).
- the same brackets 12 are also used for mounting safety and/or operational thermostats.
- a sleeve 18 is applied to the outer surface of the tube 8 at one of the two brackets, and houses internally a thermal fuse (not shown in the drawings) connected into the electrical network supplying the resistance element, to interrupt this supply when a predetermined temperature is exceeded.
- This system presents low thermal inertia, but should it be necessary to increase it a steel profile of high thermal mass can be applied (by welding in parallel with or on a higher level than the spiral tube). This variant is considered useful for various applications, such as vapour phase generation.
- the resistance element 2 comprises at one end a seat into which a hollow sleeve 20 is inserted, housing a thermal fuse 22 which is connected at its ends to the push-on connector 6 and, respectively, to a terminal pin 24 connected to the resistive spiral 26.
- a resin seal 28 separates the magnesium oxide 30 insulating the resistive spiral 26, from the sleeve 20.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Fuses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000012U ITVE20080012U1 (it) | 2008-04-24 | 2008-04-24 | Scambiatore di calore per fluidi. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2112438A2 true EP2112438A2 (fr) | 2009-10-28 |
EP2112438A3 EP2112438A3 (fr) | 2012-06-13 |
Family
ID=40297631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09158161A Withdrawn EP2112438A3 (fr) | 2008-04-24 | 2009-04-17 | Échangeur de chaleur pour fluides |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2112438A3 (fr) |
IT (1) | ITVE20080012U1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101943464A (zh) * | 2010-06-03 | 2011-01-12 | 宁波市万泓电器科技有限公司 | 一种液体加热单元及其制造工艺 |
CN104333924A (zh) * | 2014-10-17 | 2015-02-04 | 芜湖市泰能电热器具有限公司 | 一种高性能加热铝管 |
WO2015107510A1 (fr) * | 2014-01-20 | 2015-07-23 | I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini | Élément chauffant pour appareils électroménagers |
IT201700060931A1 (it) * | 2017-06-05 | 2018-12-05 | Lavazza Luigi Spa | Riscaldatore per fluidi e corrispondente macchina |
WO2019002492A1 (fr) * | 2017-06-30 | 2019-01-03 | Zoneox Medical Aps | Appareil et procédé permettant d'influencer un paramètre d'un fluide |
WO2022068090A1 (fr) * | 2020-09-30 | 2022-04-07 | 张健鸿 | Mécanisme de vaporisation de chauffage électrique et dispositif de génération de vapeur à haute température |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2588360A1 (fr) * | 1985-10-04 | 1987-04-10 | Bidaux Alain | Prechauffeur a bain-marie multicombustible |
DE4240840A1 (de) * | 1992-12-04 | 1994-06-09 | Tuerk & Hillinger Gmbh | Elektrischer Durchlauferhitzer für Flüssigkeiten |
WO1996024002A1 (fr) * | 1995-02-03 | 1996-08-08 | Artform International Limited | Raccords |
JPH1024102A (ja) * | 1996-07-15 | 1998-01-27 | Meteku:Kk | 透析液加温ヒーター |
WO2001052601A1 (fr) * | 2000-01-13 | 2001-07-19 | Seb S.A. | Element chauffant avec integration d'un dispositif de securite thermique |
US6327429B1 (en) * | 2000-06-13 | 2001-12-04 | Electrical & Electronics Limited | Coffee maker heater |
EP1741995A2 (fr) * | 2005-07-08 | 2007-01-10 | Tokyo Electron Limited | Dispositif pour chauffer un fluide |
DE202007017796U1 (de) * | 2007-12-20 | 2008-04-17 | BSH Bosch und Siemens Hausgeräte GmbH | Sicherungsvorrichtung für einen Durchlauferhitzer |
-
2008
- 2008-04-24 IT IT000012U patent/ITVE20080012U1/it unknown
-
2009
- 2009-04-17 EP EP09158161A patent/EP2112438A3/fr not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2588360A1 (fr) * | 1985-10-04 | 1987-04-10 | Bidaux Alain | Prechauffeur a bain-marie multicombustible |
DE4240840A1 (de) * | 1992-12-04 | 1994-06-09 | Tuerk & Hillinger Gmbh | Elektrischer Durchlauferhitzer für Flüssigkeiten |
WO1996024002A1 (fr) * | 1995-02-03 | 1996-08-08 | Artform International Limited | Raccords |
JPH1024102A (ja) * | 1996-07-15 | 1998-01-27 | Meteku:Kk | 透析液加温ヒーター |
WO2001052601A1 (fr) * | 2000-01-13 | 2001-07-19 | Seb S.A. | Element chauffant avec integration d'un dispositif de securite thermique |
US6327429B1 (en) * | 2000-06-13 | 2001-12-04 | Electrical & Electronics Limited | Coffee maker heater |
EP1741995A2 (fr) * | 2005-07-08 | 2007-01-10 | Tokyo Electron Limited | Dispositif pour chauffer un fluide |
DE202007017796U1 (de) * | 2007-12-20 | 2008-04-17 | BSH Bosch und Siemens Hausgeräte GmbH | Sicherungsvorrichtung für einen Durchlauferhitzer |
Non-Patent Citations (1)
Title |
---|
ANONYMOUS: "Heater for liquids with reduced potential for precipitate formation", RESEARCH DISCLOSURE, MASON PUBLICATIONS, HAMPSHIRE, GB, vol. 305, no. 33, 1 September 1989 (1989-09-01), XP007114146, ISSN: 0374-4353 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101943464A (zh) * | 2010-06-03 | 2011-01-12 | 宁波市万泓电器科技有限公司 | 一种液体加热单元及其制造工艺 |
WO2015107510A1 (fr) * | 2014-01-20 | 2015-07-23 | I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini | Élément chauffant pour appareils électroménagers |
CN104333924A (zh) * | 2014-10-17 | 2015-02-04 | 芜湖市泰能电热器具有限公司 | 一种高性能加热铝管 |
IT201700060931A1 (it) * | 2017-06-05 | 2018-12-05 | Lavazza Luigi Spa | Riscaldatore per fluidi e corrispondente macchina |
WO2018224909A1 (fr) * | 2017-06-05 | 2018-12-13 | Luigi Lavazza S.P.A. | Dispositif de chauffage de fluide et machine correspondante |
WO2019002492A1 (fr) * | 2017-06-30 | 2019-01-03 | Zoneox Medical Aps | Appareil et procédé permettant d'influencer un paramètre d'un fluide |
WO2022068090A1 (fr) * | 2020-09-30 | 2022-04-07 | 张健鸿 | Mécanisme de vaporisation de chauffage électrique et dispositif de génération de vapeur à haute température |
Also Published As
Publication number | Publication date |
---|---|
ITVE20080012U1 (it) | 2009-10-24 |
EP2112438A3 (fr) | 2012-06-13 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: F24H 1/16 20060101AFI20120504BHEP Ipc: H05B 3/48 20060101ALI20120504BHEP Ipc: F24H 9/20 20060101ALI20120504BHEP Ipc: F28F 9/00 20060101ALI20120504BHEP |
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18D | Application deemed to be withdrawn |
Effective date: 20121214 |