EP4271128A1 - Dispositf de chauffage de fluide - Google Patents

Dispositf de chauffage de fluide Download PDF

Info

Publication number
EP4271128A1
EP4271128A1 EP23167523.2A EP23167523A EP4271128A1 EP 4271128 A1 EP4271128 A1 EP 4271128A1 EP 23167523 A EP23167523 A EP 23167523A EP 4271128 A1 EP4271128 A1 EP 4271128A1
Authority
EP
European Patent Office
Prior art keywords
power
heating device
fitting
enclosure
power switch
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.)
Pending
Application number
EP23167523.2A
Other languages
German (de)
English (en)
Inventor
Andrea Sultato
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.)
HT SpA
Original Assignee
HT SpA
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 HT SpA filed Critical HT SpA
Publication of EP4271128A1 publication Critical patent/EP4271128A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • 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
    • H05B1/0252—Domestic applications
    • H05B1/0275—Heating of spaces, e.g. rooms, wardrobes
    • H05B1/0283—For heating of fluids, e.g. water heaters
    • 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
    • F24H1/101—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 using electric energy supply
    • F24H1/102—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 using electric energy supply with resistance
    • 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
    • F28D2021/0035—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for domestic or space heating, e.g. heating radiators
    • F28D2021/0036—Radiators for drying, e.g. towel radiators
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
    • 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

  • the present invention generically relates to a fluid heating device, particularly for water, enclosed within airtight and/or watertight containers.
  • the invention relates to a heating device suitablee for hot water tanks and/or water or oil radiator and/or a towel warmer.
  • Such a heating device normally includes a resistor or resistive element, which is placed within a tubular enclosure made of thermally conductive material and which is connected to a power circuit via a power electronic switch; alternatively, there may be double-walled heating devices, in which two thermally conductive tubular enclosures (and, therefore, two respective resistors) are arranged coaxially within each other.
  • the external enclosure of the heating device is inserted into the fluid present in the hermetically sealed container, while the upper end of this enclosure is mounted stably, for example by means of a suitable end flange, on the outside of the container, so that the electrical connection of the resistor can be made.
  • the end flange, within which the heating resistor is arranged, may be made of thermally conductive material, and in a suitable cavity in it may be placed the power circuit breaker (usually a TRIAC), so that the structure of the flange itself allows the dissipation of the heat generated, during the operation of the breaker or TRIAC, through the walls of the external enclosure.
  • the power circuit breaker usually a TRIAC
  • This structure makes it possible to substantially limit the power dissipation and thus the excessive heating of the TRIAC; however, in order to achieve this, it is necessary to specially design the end flange of the heating device and to provide for its sufficient thickness to mount the TRIAC, with the inevitable consequence given that the whole structure is extremely bulky and results in relative costs and difficulties of electrical connections, which it would be desirable to reduce.
  • heating device resistors which are enclosed within an insulating material and are connected to a power source, via a temperature sensor; the sensor is placed within the insulating material and is capable of interrupting the power supply to the resistor depending on the temperature detected.
  • the aim of the present invention is, therefore, to obviate the drawbacks of the above-mentioned prior art and, in particular, to realize a fluid heating device, in particular circulating within radiators and/or towel warmers, which allows for adequate dissipation of the power and related heat generated by the power switch (TRIAC) connected to the resistive element supply circuit, which is itself arranged within the enclosure of thermally conductive material.
  • TRIAC power switch
  • Another aim of the invention is to realize a fluid heating device, which can be used particularly for radiators and/or towel warmers, and which allows for a compact and space-saving structure, compared with the known technique.
  • Another aim of the invention is to realize a fluid heating device, which is particularly effective, reliable, convenient and economical, compared to the prior art, both from the point of view of assembly and from the point of view of the electrical connections to be made.
  • a power electronic switch by way of example a TRIAC
  • Another aim of the invention is to make a heating device having a diffuser, interposed between the switch and the fitting, so as to increase the contact surface area between the switch and the fitting and effectively transfer heat from the switch to the fitting.
  • a further aim of the present invention is to provide a fluid heating device that is capable of monitoring and/or controlling the temperature of the power electronic switch.
  • TRIAC power electronic circuit breaker
  • the physical connection between the fitting and the diffuser allows, by enlarging the contact surface, better power and heat dissipation.
  • the use of the fitting enables a highly protective function, both mechanically and from the point of view of electrical insulation of the power electronic switch, as well as facilitates its electrical connections.
  • the fluid heating device in a first embodiment thereof, is generically indicated by the numerical reference 100, while, in a second embodiment thereof, according to the present invention, it is generically indicated by the numerical reference 200.
  • the fluid heating device 100, 200 which is the object of the present invention, comprises a reinforced electrical heating element, which includes a tubular enclosure or tube 10, made of electrically conductive material and, in particular metal, inside which a resistive element (not shown in detail in the attached figures) is inserted.
  • the resistive element is then usually placed inside an electrically insulating powder or compound, compacted within the enclosure or tube 10, and has two terminals, connected to respective electrical conductors, which emerge from the enclosure or tube 10, passing through the fitting 1, made of thermally conductive material, to be connected to a power electronic circuit, placed outside the heating device which results connected to a power switch 3.
  • the power switch 3 of the electronic circuit may consist of a TRIAC and results connected to the resistive element on one side and to the rest of the power circuit on the other side by means of appropriate cables 5.
  • Such cables 5 may be power and/or signal cables in double or single insulation.
  • the power switch or TRIAC 3 is inserted within an opening 14, preferably with a cylindrical shape, drilled centrally to the fitting 1, so that said TRIAC 3 is in contact with a power dissipating element or diffuser 2 in which, the said power dissipator or diffuser 2 is interposed between the TRIAC 3 and one of the inner walls 13 of the fitting 1, as visible, for example, in figures 4 and 7 and/or between the TRIAC 3 and the enclosure or tube 10 as visualized in the attached figures 1 and 3 .
  • the diffuser 2 at a first portion of it, is in contact with a inner wall 13 of the fitting 1 and, at a second portion of it, is in contact with the TRIAC 3.
  • the diffuser 2 can be designed to allow power or signal cables 5 to pass through it.
  • diffuser 2 transfers heat from TRIAC 3 to fitting 1 and is appropriately sized to mate with the hole in fitting 1 and hold the construction in place. Its dimensions are such as to allow heat dissipation and ensure a zone temperature compatible with the components present.
  • the TRIAC 3 is advantageously fixed, by means of a mechanical fixing system or mechanical coupling 4, to the fitting 1 and/or to the enclosure or tube 10.
  • a screw may be used, as illustrated in figures 1, 2A and 2B , or, in a second embodiment of the device 200, a mechanical coupling of the parts is used, as illustrated in figures 5, 6B AND 7, or additional fastening systems, such as rivets, tape and/or glue, may be used.
  • the TRIAC 3, diffuser 2, cables 5 and mechanical fixing system 4 may also be enclosed within insulation device 6, such as a thin, thermally and electrically insulating sheet or sheath, in order to increase the insulation between the power switch or TRIAC 3 itself and the resistive element contained in the tubular enclosure or tube 10.
  • insulation device 6 such as a thin, thermally and electrically insulating sheet or sheath, in order to increase the insulation between the power switch or TRIAC 3 itself and the resistive element contained in the tubular enclosure or tube 10.
  • the TRIAC 3 is inserted into the fitting 1 through the opening 14, internally to the insulation device 6, together with a mechanical fixing system 4, which, inserted between the TRIAC 3 and the inner wall opposed to the inner wall 13, determines the stability of the TRIAC 3 and of the diffuser 2, which are thus embedded and forced to maintain their position inside the fitting 1.
  • Such insertion facilitates the electrical connection of the TRIAC 3 to the resistive element placed inside the tubular enclosure or tube 10, as well as the stable positioning of the TRIAC 3 itself at a portion of the diffuser 2 in contact with one of the inner walls 13 of the fitting 1, so as to ensure effective dissipation of the heat generated by the TRIAC 3, during its operation, directly through the outer perimeter wall of the fitting 1.
  • the device 200 may include, in addition to the power switch 3, additional electronic components 7 suitable for enhancing the functionality of the device 200.
  • Such electronic components may include, as an example, an NTC-type temperature sensor with the function of controlling the temperature of the TRIAC 3 itself. Therefore, from the description made, the characteristics of the fluid heating device, which is the object of the present invention, are clear, as are its advantages. Finally, it is clear that numerous other variations may be made to the heating device object of the invention, without departing from the principles of novelty inherent in the inventive idea, just as it is clear that, in the practical implementation of the invention, the materials, shapes and sizes of the details illustrated may be any as required and the same may be substituted for equivalent ones.

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)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP23167523.2A 2022-04-29 2023-04-12 Dispositf de chauffage de fluide Pending EP4271128A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102022000008582A IT202200008582A1 (it) 2022-04-29 2022-04-29 Dispositivo riscaldante per fluidi

Publications (1)

Publication Number Publication Date
EP4271128A1 true EP4271128A1 (fr) 2023-11-01

Family

ID=82482606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23167523.2A Pending EP4271128A1 (fr) 2022-04-29 2023-04-12 Dispositf de chauffage de fluide

Country Status (2)

Country Link
EP (1) EP4271128A1 (fr)
IT (1) IT202200008582A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6064801A (en) * 1995-09-25 2000-05-16 Stokes (Australasia) Limited Heating element assembly for water heater with IC controller and temperature sensor mounted in thermal relation
EP1278400A2 (fr) * 2001-07-20 2003-01-22 Jedac Elément chauffant
EP1599080A2 (fr) * 2004-05-18 2005-11-23 Lacroix Electronique SRL Pont thermique pour dissiper la chaleur d' un circuit de commande d' éléments radiants à fluide
EP1655546A1 (fr) * 2003-12-09 2006-05-10 BORELLI Luigi Groupe chauffante pour éléments radiantes à fluide diathermique
WO2015018950A1 (fr) * 2013-08-09 2015-02-12 Talleres Del Agua, S.L. Sociedad Unipersonal Échangeur de chaleur utilisé pour chauffer de l'eau
EP2661151B1 (fr) * 2012-05-02 2017-07-05 HT S.p.A. Appareil pour chauffer des fluides

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6064801A (en) * 1995-09-25 2000-05-16 Stokes (Australasia) Limited Heating element assembly for water heater with IC controller and temperature sensor mounted in thermal relation
EP1278400A2 (fr) * 2001-07-20 2003-01-22 Jedac Elément chauffant
EP1655546A1 (fr) * 2003-12-09 2006-05-10 BORELLI Luigi Groupe chauffante pour éléments radiantes à fluide diathermique
EP1599080A2 (fr) * 2004-05-18 2005-11-23 Lacroix Electronique SRL Pont thermique pour dissiper la chaleur d' un circuit de commande d' éléments radiants à fluide
EP2661151B1 (fr) * 2012-05-02 2017-07-05 HT S.p.A. Appareil pour chauffer des fluides
WO2015018950A1 (fr) * 2013-08-09 2015-02-12 Talleres Del Agua, S.L. Sociedad Unipersonal Échangeur de chaleur utilisé pour chauffer de l'eau

Also Published As

Publication number Publication date
IT202200008582A1 (it) 2023-10-29

Similar Documents

Publication Publication Date Title
US7164102B2 (en) Self heating thermal protector
JP6708697B2 (ja) 取り付け部材付きの取り外し可能な電気グリル
US5864365A (en) Environmentally controlled camera housing assembly
KR101283379B1 (ko) 유동성 재료, 특히 윤활유를 운반하기 위한 장치
EP1208342A1 (fr) Appareil de regulation thermique pour enceinte scellee
US3497677A (en) Electric heater unit for liquid reservoirs
EP4271128A1 (fr) Dispositf de chauffage de fluide
EP0757507B1 (fr) Dispositif pour chauffer et pour maintenir à une température constante un liquide, en particulier de l'eau d'aquarium
US5719342A (en) Probe with unilaterally cantilevered head housing
EP3068984B1 (fr) Élément chauffant à contact
US5177658A (en) Heat flow detector for recessed incandescent fixtures
US5157579A (en) Heat flow detector for recessed incandescent fixtures
EP2661151B1 (fr) Appareil pour chauffer des fluides
US7365294B2 (en) Microwave oven
RU134725U1 (ru) Устройство конвективного нагрева
EP2406555B1 (fr) Radiateur pour chauffage domestique
US5321576A (en) Heat flow detector for recessed incandescent fixtures
CA1236515A (fr) Detecteur de rayonnement thermique pour appareils a incandescence encastres
CA1115559A (fr) Plaque de montage chauffante
CN210986215U (zh) 一种耐高温的安防摄像机
CN117096762A (zh) 一种馈线终端装置
US3858146A (en) Electrical discharge resistor
KR200221233Y1 (ko) 배전반 습기제거용 히터
CN117063609A (zh) 固态继电器模块加热系统和方法
EP1766297B1 (fr) Moyen de chauffage de fluide ameliore

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20231130

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR