EP2731399A1 - Élément chauffant isolé - Google Patents

Élément chauffant isolé Download PDF

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Publication number
EP2731399A1
EP2731399A1 EP12007654.2A EP12007654A EP2731399A1 EP 2731399 A1 EP2731399 A1 EP 2731399A1 EP 12007654 A EP12007654 A EP 12007654A EP 2731399 A1 EP2731399 A1 EP 2731399A1
Authority
EP
European Patent Office
Prior art keywords
heat conduction
insulated heater
heater according
thermal diffusion
plates
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Withdrawn
Application number
EP12007654.2A
Other languages
German (de)
English (en)
Inventor
Chih-Chang Wei
Etsuro Habata
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.)
Betacera Inc
Original Assignee
Betacera Inc
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 Betacera Inc filed Critical Betacera Inc
Priority to EP12007654.2A priority Critical patent/EP2731399A1/fr
Publication of EP2731399A1 publication Critical patent/EP2731399A1/fr
Withdrawn legal-status Critical Current

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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
    • H05B3/04—Waterproof or air-tight seals for 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
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • 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
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • 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
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the present invention relates to a warm air heating structure, especially to an insulated heater directly assembled by heat conduction glue.
  • the heating rows are usually used in clothes dryer, laundry machine, car auxiliary heater, bathroom dryer, electric radiator, or dish dryer, etc.
  • the conventional heating row provides loads to heat the resistor by connecting two electrodes to two sides of a resistor, and then conducting the heat generated by the resistor to two pairs of fins (the fins are attached to two electrodes). The heat can be emitted to the air via the fins.
  • the back adhesive layer is a thin membrane with glue on both sides, so the heat transmitted from the electrodes to the fins should be via two layers of glue and one layer of thin membrane.
  • the back adhesive layer increases the thermal resistance during the heat conduction process, which results in the heat conduction inefficiency for the conventional heating row. Furthermore, the insufficient adhesion of the back adhesive layer also makes the components easy to come off.
  • the present invention provides an insulated heater, and the structure of the heater makes the heat transmitting efficiency of each components better than the conventional technique.
  • the present invention provides an insulated heater, which includes a heating unit, two thermal diffusion units and a heat conduction unit.
  • the heating unit includes two electrode plates and at least one PTC (Positive Temperature Coefficient) heating plate, the PTC heating plate is sandwiched between the two electrode plates, the thermal diffusion unit includes a corrugated metal fin and two heat conduction plates, the corrugated metal fin being sandwiched between the two heat conduction plates, the thermal diffusion units attaching to one of the electrode plates via the heat conduction plates, and the heat conduction glue being spread between the electrode plates and the thermal diffusion units attached to the electrode plates.
  • PTC Physical Temperature Coefficient
  • the PTC heating plate is covered by the heat conduction glue.
  • the side of the heat conduction plate is covered with the heat conduction glue.
  • the composition of the heat conduction glue is silicon gel.
  • the composition of the heat conduction glue includes plastics.
  • the composition of the heat conduction glue includes Teflon.
  • the composition of the heat conduction glue includes polyamide.
  • the composition of the heat conduction glue includes epoxy.
  • the composition of the heat conduction glue includes ceramic powder.
  • the surface of the corrugated metal fin is provided with a repression groove. The corrugated metal fin is bent and has a plurality of peaks which are arranged in two lines being opposite to each other, and a convection slot is provided between the two peaks.
  • the corrugated metal fm is bent and has a plurality of peaks which are arranged in two lines being opposite to each other, and each peak of one of the lines is provided with a convection slot respectively.
  • the surface of the PTC heating plate is processed by spraying metal.
  • the surfaces of the electrode plates are processed by anodic treatment.
  • the insulated heater according to the present invention decreases the thermal resistance between the thermal diffusion unit and the electrode plate by directly binding the thermal diffusion unit and the electrode plate with the heat conduction glue, thereby improving the heat transmitting efficiency of every components of the heater, and the shortcoming of the conventional technique can be overcome as well.
  • FIG. 1 is an exploded perspective view of an insulated heater of the first embodiment in accordance with the present invention
  • FIG. 2 is a perspective schematic view of the insulated heater of the first embodiment in accordance with the present invention.
  • FIG. 3 is a longitudinal sectional view of the insulated heater of the first embodiment in accordance with the present invention.
  • FIG. 4 is a lateral sectional view of the insulated heater of the first embodiment in accordance with the present invention.
  • FIG. 5 is a schematic view of the insulated heater of the second embodiment in accordance with the present invention.
  • FIG. 6 is a longitudinal sectional view of the insulated heater of the second embodiment in accordance with the present invention.
  • FIG. 7 is a schematic view of another pattern of the second embodiment of the insulated heater in accordance with the present invention.
  • FIG. 8 is a schematic view of the third embodiment of the insulated heater in accordance with the present invention.
  • FIG. 9 is a schematic view of a second pattern of the third embodiment of the insulated heater in accordance with the present invention.
  • FIG. 10 is a schematic view of a third pattern of the third embodiment of the insulated heater in accordance with the present invention.
  • the first embodiment according to the present invention provides an insulated heater, which includes a heating unit 100, two thermal diffusion units 200/300, and a heat conduction glue 400.
  • the two thermal diffusion units 200/300 are attached to the opposite sides of the heating unit 100, respectively.
  • the liquid state heat conduction glue 400 is spread between each thermal diffusion unit 200/300 and the heating unit 100.
  • the thermal diffusion units 200/300 and the heating unit 100 are stuck together after the heat conduction glue 400 solidifies.
  • the heat generated from the heating unit 100 can be transmitted to each thermal diffusion unit 200/300 via the heat conduction glue 400, and the heat will further be emitted to the air via each thermal diffusion unit 200/300.
  • the heating unit 100 includes two electrode plates 111/112 and a plurality of PTC heating plates 120.
  • the electrode plates 111/112 are long strip rectangle shape metal plates, preferably made of metal having good heat conduction, such as copper or aluminum, but not limited thereto.
  • the PTC heating plates 120 are thermistors (Positive Temperature Coefficient, PTC) preferably made of ceramics, and the PTC heating plates 120 are sandwiched between two electrode plates 111/112.
  • the liquid state heat conduction glue 400 is spread between the PTC heating plates 120 and each electrode plate 111/112.
  • the PTC heating plates 120 and the electrode plates 111/112 are stuck together after the heat conduction glue 400 solidifies.
  • Each thermal diffusion unit 200/300 includes a corrugated metal fin 210/310 and two heat conduction plates 220/320.
  • the corrugated metal fin 210/310 is a long strip shape rectangle metal plate bent to wave form, and therefore has a plurality of peaks 212/312 which are arranged in two lines being opposite to each other.
  • the metal fin is preferably made of metal with good heat conduction, such as copper or aluminum, but not limited thereto)
  • the surface of the corrugated metal fin 210/310 is provided with a repression groove 211/311 to increase the area to contact with the air.
  • the heat conduction plate 220/320 is a long rectangle metal plate, and the corrugated metal fin 210/310 is sandwiched between the two heat conduction plates 220/320, and the two heat conduction plates 220/320 fit the peaks 212/312 on both sides of the corrugated metal fin 210/310 respectively.
  • the heat conduction plate 220/320 is preferably made of metal with good heat conduction, such as copper or aluminum, but not limited thereto.
  • the two thermal diffusion units 200/300 are attached to one of the electrode plates 111/112 via the heat conduction plates 220/320 respectively.
  • the width of the PTC heating plate 120 is preferably shorter than the width of the thermal diffusion unit 200/300. Therefore, the largest heat generating surface of the PTC heating plate 120 can totally contact the thermal diffusion unit 200/300.
  • the adhesive force between the heat conduction glue 400 and the surface of the aforementioned PTC heating plate 120 and the electrode plate 111/112 can be strengthened by spraying metal or anodic treatment on the surface of the aforementioned PTC heating plate 120 and the electrode plate 111/112, thereby securely connecting each component of the insulated heater of the present invention.
  • the composition of the heat conducting glue 400 can contain silicon, for example, the heat conducting glue 400 is silica gel.
  • the composition of the heat conducting glue 400 can also contain plastic, for example, Teflon or polyamide.
  • the composition of the heat conducting glue 400 can also contain epoxy.
  • the composition of the heat conducting glue 400 can also contain ceramic powder, for example, Al 2 O 3 , Si 3 N 4 , AlN, or SiC, etc.
  • the composition of the heat conducting glue 400 can also contain mixed silicon and ceramic powder, wherein the ceramic powder is mentioned above.
  • the composition of the heat conducting glue 400 can also contain mixed plastic and ceramic powder, which can be epoxy and ceramic powder.
  • FIGS. 5 and 6 The second embodiment according to the present invention provides an insulated heater, which includes a heating unit 100, two thermal diffusion unit 200/300, and a heat conducting glue 400.
  • the structure of the insulated heater of the present embodiment is approximately the same as the first embodiment, and the same portion will not describe hereinafter.
  • each thermal diffusion unit 200/300 includes a corrugated metal fin 210/310 and two heat conduction plates 220/320.
  • the corrugated metal fin 210/310 is a long strip shape rectangle metal plate bent to wave form, and therefore has a plurality of peaks 212/312 which are arranged in two lines being opposite to each other (the metal fin is preferably made of metal with good heat conduction, such as copper or aluminum, but not limited thereto). Each peak 212/312 of any one of the two lines is provided with a convection slot 213/313 to improve the air convection efficiency of the corrugated metal fin 210/310, but not limited thereto.
  • the corrugated metal fin 210/310 can also not be provided with the convection slot 213/313 or the repression groove 211/311.
  • the type of the convention slot 213 is not limited in the present invention, and the convection slot 213 can also be provided between two peaks 212.
  • the third embodiment according to the present invention provides an insulated heater, which includes a heating unit 100, two thermal diffusion units 200/300, and a heat conducting glue 400.
  • the structure of the insulated heater of the present embodiment is approximately the same as the first embodiment, and the same portion will not describe hereinafter.
  • the difference of the third embodiment is that, the surrounding of the heating unit 100 is covered with the heat conduction glue 400, which makes the PTC heating plate 120 to be covered with the heat conduction glue 400.
  • the PTC heating plate 120 can transmit the heat via the surrounding of the heating unit 100 to the thermal diffusion unit 200/300 to achieve better heat dissipation effect.
  • the heat conduction glue 400 can also extend to cover the side of the heat conduction plate 220/320 (as shown in the second embodiment in FIG. 9 ). Furthermore, the side of the heat conduction plate 220/320 can also attach a heat conduction tape 500 to connect the heat conduction glue 400 (as shown in the third embodiment in FIG. 10 ).
  • the insulated heater according to the present invention improves the heat conduction efficiency between each component by directly sticking each component with the heat conduction glue 400. Moreover, the adhesive force of the solidified liquid heat conduction glue 400 is better than the back adhesive, thereby effectively improving the shortcomings of the conventional technique.

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  • Resistance Heating (AREA)
EP12007654.2A 2012-11-12 2012-11-12 Élément chauffant isolé Withdrawn EP2731399A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12007654.2A EP2731399A1 (fr) 2012-11-12 2012-11-12 Élément chauffant isolé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12007654.2A EP2731399A1 (fr) 2012-11-12 2012-11-12 Élément chauffant isolé

Publications (1)

Publication Number Publication Date
EP2731399A1 true EP2731399A1 (fr) 2014-05-14

Family

ID=47221074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12007654.2A Withdrawn EP2731399A1 (fr) 2012-11-12 2012-11-12 Élément chauffant isolé

Country Status (1)

Country Link
EP (1) EP2731399A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017081225A1 (fr) 2015-11-13 2017-05-18 Dbk David + Baader Gmbh Unité de chauffage et sèche-linge
FR3089745A1 (fr) * 2018-12-10 2020-06-12 Valeo Systemes Thermiques Procédé d’assemblage d’un module chauffant pour dispositif de chauffage électrique et dispositif de chauffage électrique associé

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257498A (en) * 1963-07-26 1966-06-21 Walter C Kahn Fluid-tight cable connecting means
JPH0665375A (ja) * 1992-08-18 1994-03-08 Nippon Steel Chem Co Ltd 耐熱性複合材料及びその製造方法
JPH08138769A (ja) * 1994-11-02 1996-05-31 Hitachi Ltd 回転センサ
US6178292B1 (en) * 1997-02-06 2001-01-23 Denso Corporation Core unit of heat exchanger having electric heater
EP2023056A1 (fr) * 2007-07-30 2009-02-11 Chia-Hsiung Wu Procédé de liaison pour un chauffage d'air et structure de celui-ci
EP2190258A1 (fr) * 2008-11-20 2010-05-26 Behr France Rouffach SAS Caloporteur
EP2249618A1 (fr) * 2008-01-30 2010-11-10 Koshiro Taguchi Radiateur monté dans un véhicule et procédé de fabrication

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257498A (en) * 1963-07-26 1966-06-21 Walter C Kahn Fluid-tight cable connecting means
JPH0665375A (ja) * 1992-08-18 1994-03-08 Nippon Steel Chem Co Ltd 耐熱性複合材料及びその製造方法
JPH08138769A (ja) * 1994-11-02 1996-05-31 Hitachi Ltd 回転センサ
US6178292B1 (en) * 1997-02-06 2001-01-23 Denso Corporation Core unit of heat exchanger having electric heater
EP2023056A1 (fr) * 2007-07-30 2009-02-11 Chia-Hsiung Wu Procédé de liaison pour un chauffage d'air et structure de celui-ci
EP2249618A1 (fr) * 2008-01-30 2010-11-10 Koshiro Taguchi Radiateur monté dans un véhicule et procédé de fabrication
EP2190258A1 (fr) * 2008-11-20 2010-05-26 Behr France Rouffach SAS Caloporteur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017081225A1 (fr) 2015-11-13 2017-05-18 Dbk David + Baader Gmbh Unité de chauffage et sèche-linge
DE102016110023A1 (de) * 2015-11-13 2017-05-18 Dbk David + Baader Gmbh Heizeinheit und Wäschetrockner
FR3089745A1 (fr) * 2018-12-10 2020-06-12 Valeo Systemes Thermiques Procédé d’assemblage d’un module chauffant pour dispositif de chauffage électrique et dispositif de chauffage électrique associé

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