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EP3030845B1 - Warmwasserbereiter - Google Patents

Warmwasserbereiter Download PDF

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Publication number
EP3030845B1
EP3030845B1 EP14747012.4A EP14747012A EP3030845B1 EP 3030845 B1 EP3030845 B1 EP 3030845B1 EP 14747012 A EP14747012 A EP 14747012A EP 3030845 B1 EP3030845 B1 EP 3030845B1
Authority
EP
European Patent Office
Prior art keywords
sheath
water heater
tank
winding
sleeve
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.)
Active
Application number
EP14747012.4A
Other languages
English (en)
French (fr)
Other versions
EP3030845A1 (de
Inventor
Jean-Yves Gaspard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Winslim
Original Assignee
Winslim
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Filing date
Publication date
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Publication of EP3030845A1 publication Critical patent/EP3030845A1/de
Application granted granted Critical
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Active legal-status Critical Current
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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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric 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
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/002—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release using electrical energy supply
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0244—Heating of fluids
    • 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
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • 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
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements
    • H05B6/365—Coil arrangements using supplementary conductive or ferromagnetic pieces
    • 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
    • F24H2250/00—Electrical heat generating means
    • F24H2250/08—Induction

Definitions

  • the present invention relates to water heating devices otherwise called water heaters. It relates in particular to a device for the induction heating of a water heater and to a water heater provided with such a device.
  • Water heaters are devices for heating water for different household or industrial needs. There are different types of water heaters: the instantaneous water heater and the water storage water heater.
  • heating element If the heating element is heavily scaled, heat transfer to the water becomes difficult and the water is not heated properly as either the thermostat stops heating before the water heating setpoint temperature is reached. is reached so as to protect the heating element which risks being damaged, or the thermostat does not perceive the overheating of the heating element which continues heating and is then damaged.
  • a problem at the basis of the present invention is to provide an electric water storage water heater which can operate at various powers, exhibiting good efficiency while avoiding or reducing scaling of the heating device of the water heater.
  • a water heater comprising the characteristics of claim 1.
  • the figures 1 to 5 illustrate an example of a water heater comprising a tank and a heating device according to the present invention.
  • the figure 1 illustrates a cross section of a water heater 1.
  • the water heater 1 comprises a tank 2 for accumulating a volume of water and a heater.
  • the tank 2 has, for example, a capacity greater than 10 liters, preferably greater than 20 liters.
  • the tank 2 is delimited on the one hand by a peripheral envelope 3 and on the other hand by the wall 4 of a sealed sheath 5 plunging into the internal volume of the peripheral envelope 3.
  • said peripheral envelope 3 and said sheath (5) define a closed volume.
  • the tank 2 comprises an opening 7 at one of its longitudinal ends making it possible to insert the heating device.
  • the sleeve 5 is advantageously inserted into the tank 2 through the opening 7.
  • the tank 2 comprises at one of its longitudinal ends two mouths: a mouth 6a for water supply intended to be heated and a mouth 6b heated water outlet.
  • the tank 2 and / or the sleeve 5 and / or the inductor 10 have cylindrical shapes.
  • the sleeve 5 and the inductor 10 have rectangular parallelepiped shapes.
  • the tank 2 takes, in a particularly advantageous manner, a rectangular parallelepiped shape so as to save space in use.
  • the figure 2 illustrates a cross section of the sleeve 5 and of the secondary sleeve 8 receiving the temperature sensor.
  • the wall 4 of the sleeve 5 is sealed so as to prevent water from entering the heating device.
  • the wall 4 of the sleeve 5 has a thickness, preferably, between 0.4 millimeter (mm) and 2.3 millimeters.
  • the wall 4 of the sleeve 5 is formed from a steel sheet.
  • the sheath 5 is enameled just like the interior of the tank 2; enamel hangs better on decarbonized steel. Decarburized steel is very magnetic and therefore proves to be a very good load for an induction heating system.
  • the sleeve 5 is integral with a plate 12.
  • the plate 12 cooperates with the tank 2 and is attached to the tank 2 so that the internal volume of the peripheral casing 3 is sealed.
  • the secondary sleeve 8 is preferably fixed by one of its longitudinal ends on the plate 12 before being inserted into the tank 2.
  • the secondary sleeve 8 is a tube welded to the same plate 12 as the sleeve. 5 and is enamelled like said sheath 5.
  • the plate 12 here has the shape of a disc.
  • the plate 12 is fixed to the outer wall of the tank 2 by means of a seal and fixing means.
  • the sheath 5 comprises a base 11 fixed to one of its longitudinal ends.
  • the base 11 is preferably in the form of a disc or a square.
  • the plate 12 comprising the sleeve 5 and the secondary sleeve 8 can be removed from the water heater 1 by simply removing the fixing means. Exceptionally, the heating device can be checked, checked, or even changed without opening, therefore without having to empty the tank 2.
  • the figure 3 illustrates a cross section of the interior of the sleeve 5.
  • the inductor 10 comprises a coil 22 formed on the support 9.
  • the support 9 comprises a lateral outer surface provided with a coil portion 15 and a wedging portion.
  • the winding portion 15 is set back relative to the wedging portion.
  • the wedging portion comprises a bearing surface 13, 14 on the internal face of the sleeve 5.
  • the bearing surface 13, 14 comprises two portions located on either side of the winding portion 22 in a longitudinal direction of the sleeve 5.
  • the recess 17 of the winding portion 15 relative to the wedging portion is greater than the thickness of the winding 22.
  • the space 16 separating the winding 22 and the internal face of the wall 4 of the sleeve 5 is, of preferably, less than 2 millimeters and, advantageously, less than 1 millimeter.
  • those skilled in the art tend to move the inductor type coils away from the heated elements. This is because, as the name suggests, the heated elements heat up and tend to cause the inductor systems to heat up if they are placed too close.
  • the inductor windings 22 are generally insulated by organic varnishes, the most efficient of which do not withstand temperatures above 220 ° C.
  • the internal wall 4 (for example 0.4 mm thick) of the sleeve 5 is advantageously heated, which heats up.
  • the sleeve 5 is immersed in water with which it exchanges its heat. During the heating phase, the temperature of the sleeve 5 is therefore always higher than the temperature of the water so that the heat exchange takes place, but the temperature difference remains low, for example 30 ° C for an injected power of 1800 Watts (W).
  • the figure 4 illustrates a view of the support 9.
  • the support 9 is preferably in the form of a hollow tube. Particularly advantageously, the support 9 is configured so as to cooperate with the shape of the internal wall 4 of the sheath 5.
  • a first longitudinal end of the support 9 comprises a first wedging portion comprising a base 11, a bearing surface 13 , 14 and at least one slit 19 for retaining the winding wire 22.
  • a second longitudinal end of the support 9, opposite the first, comprises a bearing surface 13, 14 and at least one slit 19, 20 for retaining the wire winding 22.
  • the bearing surface 13, 14 comprises, in a particularly advantageous manner, a plurality of crenellated peaks formed on an annular portion of the wedging portion.
  • the crenellations allow a balance of the support 9 within the sheath 5. They also limit the phenomena of hyperstatism during insertion.
  • the crenellations advantageously allow a simplification of the winding 22.
  • an inductor winding 22 of the Pan Cake type will preferably be used, without resorting to the use of a support. 9.
  • the wall of the support 9 is perforated so as to promote heat transfer within the sleeve 5, minimize the weight of the support 9 and therefore its cost.
  • the support 9 is formed of materials resistant to high temperatures such as plastics (for example, BMC “Bulk Molding Compound” comprising Polyester resin or the Vinylester) reinforced with glass fibers. In position, the support 9 extends in the longitudinal direction of the sheath 5.
  • the support 9 is advantageously hollow and its center can allow the passage of the winding wire 21 22.
  • the figure 5 is a schematic representation of a perspective view from below of the support 9.
  • the coil 22 extends in the longitudinal direction of the sleeve 5 so that the heating takes place in a homogeneous and uniform manner along the wall 4 inner sleeve 5.
  • the support 9 serves as a winding support 22.
  • the winding wire 21 22 is inserted inside the support 9 and it is crimped towards the end of the base 11.
  • the cable is then stretched.
  • wire 21 and it is passed through a slot of the support surface 13 located at one end of the support 9.
  • the support 9 can then be fixed on the winder (similar to a turn) and the winding wire 21 22 which passed through the slot of the bearing surface 13 of the support 9 is then immediately in the right place to start the winding.
  • the wire is cut and passed through the slots 20 or retaining notches until it reaches the bearing surface 14 located at the other end of the support 9.
  • the support 9 comprises several slots 20. because different versions of inductors are provided depending on the power required.
  • the notches or slots 20 serve to block the winding wire 21 22 which is then passed back to the center of the support 9 to join the starting wire 21, but diametrically opposed.
  • the two wires 21 are connected to their respective connectors secured to the base 11.
  • the two ends of the winding wire 21 22 will preferably be connected to the input and output terminals of the power supply. so as to allow the operation of the inductor 10 housed in the sheath 5.
  • the coil 22 is formed from a standard wire which does not need to be fitted with a thermo-adhesive overlayer; the maintenance of the coil 22 being advantageously only mechanical on the support 9.
  • the coil 22 is configured so that the coil has an impedance with a resistance of 1.8 Ohm and an inductance of 50 ⁇ H, for a frequency of 20 kHz.
  • the inductor In the case where the inductor is positioned in the middle of the tank 2, then mainly half of the tank 2 is heated, with particular pay attention to the layering. In the case where the inductor is positioned at the top of the tank 2, only a small part of the tank 2 is heated.
  • the sleeve 5 comprises 3 inductors located respectively in the upper part, in the central part and in the lower part of the sleeve 5, so as to simultaneously or alternately heat different zones of water in the tank 2. This could allow a certain modularity of the volume of hot water.
  • the displacement of the inductor can be physical, manual or motorized or else, it is possible to provide several inductors and supply them as needed.
  • the wall 4 of the sheath 5 comprises two layers: a first layer inert to the magnetic field providing the seal and a second layer allowing heating by induction.
  • the magnetic field has no effect on non-magnetic and non-conductive materials such as plastic, insulating composites, glass, ceramics. It would therefore be possible to envisage a first layer of the wall 4 of the sheath 5 acting as a seal inside which the inductor system 10 would be housed; said first layer of the wall 4 of the sheath 5 would be made of non-magnetic and non-conductive materials.
  • a second layer, preferably cylindrical in shape, could be positioned around the first layer and would serve as a load for the induction system.
  • this load ie the second layer of the wall 4 of the sleeve 5
  • This load could advantageously be mobile, which could mechanically assist in descaling.
  • This load no longer having the constraint of resisting the pressure could be made of a thinner material, greater than the skin thickness at 20 kHz, or a minimum thickness of 0.5 mm.
  • this load could be made of materials with a low Curie point so as to naturally limit its heating. It would advantageously be possible to transfer inductive energy into tank 2, in a completely secure manner since it is galvanically isolated.
  • a part of the inductor 10 could be placed in the sleeve 5 to heat a facing cylindrical load, placed in the tank 2, and keep a part of the winding 22 visible in order to be able to couple a coil positioned in the tank 2, which could be used to power an immersed device which may, for example, relate to anti-corrosion or anti-limescale devices, or even any electronic devices.

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  • 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)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Claims (15)

  1. Warmwasserbereiter (1), umfassend:
    - ein Speichergefäß (2), welches durch eine umlaufende Hülle (3) und die Wand (4) einer dichten Ummantelung (5) begrenzt ist, welche in das Innenvolumen der umlaufenden Hülle (3) eintaucht, wobei die umlaufende Hülle (3) und die Ummantelung (5) ein geschlossenes Volumen definieren;
    - eine elektrische Heizvorrichtung, Folgendes beinhaltend:
    - mindestens einen Induktor (10) welcher in der Ummantelung (5) aufgenommen ist, und mindestens eine Induktionsladung, die durch mindestens einen Teil der Wand (4) der Ummantelung (5) gebildet wird, wobei der Induktor (10) konfiguriert ist, um einen induzierten Strom und eine Erwärmung in der Ladung zu erzeugen;
    - einen Induktorträger (9), wobei der Induktor (10) mindestens einen Wicklungsabschnitt (15) beinhaltet, der durch den Träger (9) gebildet wird, wobei der Träger (9) fest in der Ummantelung (5) montiert ist, wobei der Warmwasserbereiter dadurch gekennzeichnet ist, dass das Speichergefäß (2) ein Speichergefäß zur Wassersammlung ist, und dadurch, dass die Ummantelung (5) eine Zugangsöffnung an einem ihrer Enden beinhaltet, wobei der Träger (9) durch das Ende in die Ummantelung (5) eingeführt wird.
  2. Warmwasserbereiter (1) nach dem vorstehenden Anspruch, wobei der Träger (9) mindestens ein Abstandhalterorgan beinhaltet, welches konfiguriert ist, um einen Freiraum (16) zwischen der Wicklung (22) und der Innenseite der Wand (4) der Ummantelung (5) beizubehalten.
  3. Warmwasserbereiter (1) nach dem vorstehenden Anspruch, wobei der Freiraum (16), welcher die Wicklung (22) und die Innenseite der Wand (4) der Ummantelung (5) trennt, kleiner als 5 Millimeter, und vorzugsweise kleiner als 1 Millimeter ist.
  4. Warmwasserbereiter (1) nach einem der beiden vorstehenden Ansprüche, wobei der Träger (9) eine seitliche Außenfläche beinhaltet, welche mit einem Wicklungsabschnitt (15) und einem Verkeilungsabschnitt versehen ist, wobei der Wicklungsabschnitt (15) in Bezug auf den Verkeilungsabschnitt zurückversetzt ist, wobei der Verkeilungsabschnitt eine Anlagefläche (13, 14) auf der Innenseite der Ummantelung (5) umfasst, wobei der Rückversatz des Wicklungsabschnitts (15) in Bezug auf den Verkeilungsabschnitt größer als die Dicke der Wicklung (22) ist.
  5. Warmwasserbereiter (1) nach dem vorstehenden Anspruch, wobei die Anlagefläche (13, 14) und die Innenseite (4) der Ummantelung (5) im Gleitsitz angeordnet sind.
  6. Warmwasserbereiter (1) nach einem der beiden vorstehenden Ansprüche, wobei die Anlagefläche (13, 14) eine Vielzahl von Lückenscheitelpunkten beinhaltet, die an einem ringförmigen Abschnitt des Verkeilungsabschnitts gebildet sind.
  7. Warmwasserbereiter (1) nach einem der drei vorstehenden Ansprüche, wobei die Anlagefläche (13, 14) zwei Abschnitte beinhaltet, die beiderseits des Wicklungsabschnitts (15) entlang einer Längsrichtung der Ummantelung (5) gelegen sind.
  8. Warmwasserbereiter (1) nach einem der vorstehenden Ansprüche, wobei der Träger (9) einen Magnetkreis umfasst.
  9. Warmwasserbereiter (1) nach einem der vorstehenden Ansprüche, wobei der Träger (9) hohl ist.
  10. Warmwasserbereiter (1) nach dem vorstehenden Anspruch, wobei die Wand des Trägers (9) durchbrochen ist.
  11. Warmwasserbereiter (1) nach einem der vorstehenden Ansprüche, wobei das Speichergefäß (2) eine Öffnung (7) umfasst, wobei der Warmwasserbereiter derart konfiguriert ist, dass die Ummantelung (5) durch die Öffnung (7) hindurch in das Speichergefäß eingeführt werden kann.
  12. Warmwasserbereiter nach einem der vorstehenden Ansprüche, wobei die Ummantelung eine Vielzahl von Schichten umfasst, wobei mindestens eine der Schichten konfiguriert ist, um das Innere der Ummantelung (5) in Bezug auf die Außenseite der Ummantelung (5) abzudichten, und mindestens eine weitere Schicht der Vielzahl konfiguriert ist, um die Ladung teilweise, und vorzugsweise vollständig zu bilden.
  13. Warmwasserbereiter (1) nach einem der vorstehenden Ansprüche, wobei die Ummantelung (5) elektrisch von dem Speichergefäß (2) isoliert ist.
  14. Warmwasserbereiter (1) nach einem der vorstehenden Ansprüche, wobei die Wand (4) der Ummantelung (5) eine Dicke von weniger als 2 Millimetern, vorzugsweise weniger als 1 Millimeter aufweist.
  15. Warmwasserbereiter (1) nach einem der vorstehenden Ansprüche, wobei das Speichergefäß (2) einen Inhalt von mehr als 10 Litern aufweist.
EP14747012.4A 2013-08-09 2014-07-31 Warmwasserbereiter Active EP3030845B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1357937A FR3009610B1 (fr) 2013-08-09 2013-08-09 Chauffe-eau
PCT/EP2014/066493 WO2015018734A1 (fr) 2013-08-09 2014-07-31 Chauffe-eau

Publications (2)

Publication Number Publication Date
EP3030845A1 EP3030845A1 (de) 2016-06-15
EP3030845B1 true EP3030845B1 (de) 2021-05-19

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ID=49713206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14747012.4A Active EP3030845B1 (de) 2013-08-09 2014-07-31 Warmwasserbereiter

Country Status (5)

Country Link
US (1) US20160195301A1 (de)
EP (1) EP3030845B1 (de)
CN (1) CN105612393A (de)
FR (1) FR3009610B1 (de)
WO (1) WO2015018734A1 (de)

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CN106766129A (zh) * 2016-07-26 2017-05-31 胡小庆 一种电磁式液体加热装置及电磁热水器
CN106535382B (zh) * 2016-07-26 2023-12-22 胡小庆 一种电磁加热组件及具有其的热水器
DE102017207738A1 (de) * 2017-05-08 2018-11-08 Mahle International Gmbh Elektrische Heizeinrichtung
CN109647305B (zh) * 2018-12-27 2021-03-26 英都斯特(无锡)感应科技有限公司 连续式感应热反应器
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EP4620333A2 (de) * 2019-03-11 2025-09-24 Nicoventures Trading Limited Aerosolbereitstellungsvorrichtung
CN114353338A (zh) * 2020-09-30 2022-04-15 芜湖美的厨卫电器制造有限公司 镁棒组件、用水设备及热水器
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Also Published As

Publication number Publication date
FR3009610B1 (fr) 2018-11-23
WO2015018734A1 (fr) 2015-02-12
US20160195301A1 (en) 2016-07-07
EP3030845A1 (de) 2016-06-15
CN105612393A (zh) 2016-05-25
FR3009610A1 (fr) 2015-02-13

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