EP3154311A1 - Substrat de dissipation de chaleur et dispositif de chauffage à thermistance à coefficient de température positif du type à joint d'étanchéité - Google Patents

Substrat de dissipation de chaleur et dispositif de chauffage à thermistance à coefficient de température positif du type à joint d'étanchéité Download PDF

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Publication number
EP3154311A1
EP3154311A1 EP16732215.5A EP16732215A EP3154311A1 EP 3154311 A1 EP3154311 A1 EP 3154311A1 EP 16732215 A EP16732215 A EP 16732215A EP 3154311 A1 EP3154311 A1 EP 3154311A1
Authority
EP
European Patent Office
Prior art keywords
cavity body
radiating
cavity
ptc
positioning
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.)
Granted
Application number
EP16732215.5A
Other languages
German (de)
English (en)
Other versions
EP3154311B1 (fr
EP3154311A4 (fr
Inventor
Xiang Zhang
Guangquan Zhang
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.)
Shenzhen Shanyuan Electronic Corp
Shenzhen Shanyuan Electronic Corp
Original Assignee
Shenzhen Shanyuan Electronic Corp
Shenzhen Shanyuan Electronic Corp
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 Shenzhen Shanyuan Electronic Corp, Shenzhen Shanyuan Electronic Corp filed Critical Shenzhen Shanyuan Electronic Corp
Publication of EP3154311A1 publication Critical patent/EP3154311A1/fr
Publication of EP3154311A4 publication Critical patent/EP3154311A4/fr
Application granted granted Critical
Publication of EP3154311B1 publication Critical patent/EP3154311B1/fr
Active 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
    • H05B3/40—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
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • 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
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • 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
    • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC
    • 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
    • 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 application relates to a thermister heater, in particular to a radiating matrix and a sealed PTC (Positive Temperature Coefficient) thermister heater.
  • a thermister heater in particular to a radiating matrix and a sealed PTC (Positive Temperature Coefficient) thermister heater.
  • a PTC thermister heater has unique characteristics of automatic constant temperature, no open flame, long service life, small influence from power voltage fluctuation, high electrothermal conversion rate and the like, and has been widely applied to electric appliance industries of air heater, clothes dryer, water heater, air conditioner, etc.
  • the PTC heating element easily approaches to two side walls of the aluminum tube and is subjected to rigid press when press is applied to two sides of the aluminum tube to cause the aluminum tube to be deformed, the PTC heating element is easy to crush, quality hidden danger is caused and a user may worry about the quality.
  • the present application provides a radiating matrix and a sealed PTC thermister heater, which can work for a long term without electrical safety hidden danger.
  • a radiating matrix for containing a PTC heating component comprises a cavity body, wherein the cavity body is provided with a hollow containing cavity extending along a length direction of the cavity body, a plurality of radiating fins are fixed in the middle of the external surface of the top and the external surface of the bottom of the cavity body, and the length of each radiating fin along a width direction of the cavity body is smaller than the width of the cavity body; a first positioning rib extending along a length direction of the cavity body is arranged at the upper part and the lower part of the inner wall of the left side of the cavity body in the containing cavity respectively, correspondingly, a second positioning rib extending along a length direction of the cavity body is arranged at the upper part and the lower part of the inner wall of the right side of the cavity body in the containing cavity respectively, the internal surface of the left side of the containing cavity between the two first positioning ribs is an outwards convex arc surface, the internal surface of the right side of the containing cavity between the two second positioning rib
  • the first positioning ribs and the second positioning ribs cause the PTC heating component to be positioned in the middle of the containing cavity together, and since the internal surface of the left side of the containing cavity between the two first positioning ribs is an outwards convex arc surface and the internal surface of the right side of the containing cavity between the two second positioning ribs is also an outwards convex arc surface, when the cavity body is molded, the left side and the right side of the cavity body are stressed and outwards deformed, the slot-shaped structures provide a deforming space, the lateral sides of the PTC heating component cannot be subjected to lateral press, so that the PTC heating component is difficult to crush and working is safer.
  • the plurality of radiating fins are parallel and are equidistantly arrayed.
  • each radiating fin is of a convex concave corrugated structure.
  • the existing radiating fins are machined in to a slab curve surface, such fins have bad strength and rigidity and are easy to fall off, the fins are easily attached together, cause impeded ventilating and generate certain wind resistance, and dust is easily accumulated on the fins, while in above technical solution, the radiating fins are designed into the convex concave corrugated structure, that is, the surfaces of the radiating fins are in convex and concave alternative arrangement, for example, the radiating fins can be a wavy curve surface, a zigzag curve surface and a trapezoid curve surface.
  • the convex concave corrugated structure increases a radiating area and improves radiating efficiency; a reinforcing rib action can also be achieved for the radiating fins, thereby enhancing the rigidity and strength of the radiating fins; in a working process, the radiating fins are hard to fall off, thereby solving a series of problems caused by falling; and the strength and rigidity are good, the fins can be made thinner under the condition of the same radiating area, therefore material production cost can be greatly reduced and material can be saved.
  • the radiating matrix is of an integrally molded structure.
  • the radiating matrix is made of an aluminum profile.
  • the cavity body is a rectangle body and the first positioning ribs and the second positioning ribs are symmetrically arranged.
  • the internal surface of the top of the cavity body corresponding to the top surface of the PTC heating component has a low middle part and two high ends
  • the internal surface of the bottom of the cavity body corresponding to the bottom surface of the PTC heating component has a high middle part and two low ends.
  • the rigid press to the PTC heating component from an aluminum tube can be reduced, thereby reducing damage to the PTC heating component.
  • a sealed PTC thermister heater comprises the radiating matrix, a PTC heating component and waterproof sealing parts, wherein the PTC heating component is positioned between the first positioning ribs and the second positioning ribs and is pressed in the middle of the containing cavity, and one waterproof sealing part is arranged at two ends of the containing cavity of the radiating matrix respectively.
  • the PTC heating component comprises a PTC thermister, two electrode terminals connected with an external power source to be electrified to cause the PTC thermister to heat, metal electrode plates and insulation layers, wherein one metal electrode plate is attached to the upper surface and lower surface of the PTC thermister respectively, the two electrode terminals are positioned on the same side of the PTC thermister and connected with the metal electrode plates respectively, and the insulation layers wrap the peripheries of the metal electrode plates, and the two electrode terminals extend from the waterproof sealing parts.
  • the waterproof sealing parts are waterproof insulating sealant capable of effectively blocking water.
  • the present application provides a radiating matrix, wherein the radiating matrix is used for containing a PTC heating component and the present application is described in detail by following preferable embodiments.
  • the radiating matrix 1 comprises a cavity body 11, wherein the cavity body 11 is a rectangle body and has a hollow containing cavity 12 extending along a length direction of the cavity body, a plurality of radiating fins 13 are fixed in the middle of the external surface of the top and the external surface of the bottom of the cavity body 11, the length of the radiating fin 13 at the external surface of the top of cavity body along a width direction of the cavity body 11 is smaller than the width of the top of the cavity body 11 and the length of the radiating fin 13 at the external surface of the bottom of cavity body along a width direction of the cavity body 11 is smaller than the width of the bottom of the cavity body 11.
  • a first positioning rib 14 extending along a length direction of the cavity body is arranged at the upper part and the lower part of the inner wall of the left side of the cavity body in the containing cavity 12 respectively, symmetrically, a second positioning rib 15 extending along a length direction of the cavity body is arranged at the upper part and the lower part of the inner wall of the right side of the cavity body in the containing cavity respectively, the internal surface 16 of the left side of the containing cavity between the two first positioning ribs 14 is an outwards convex arc surface (that is, an opening of the arc surface is toward the containing cavity), the internal surface 17 of the right side of the containing cavity between the two second positioning ribs 15 is also an outwards convex arc surface, and the outer wall of the left side and the outer wall of the right side of the cavity body are of a slot-shaped structure 18 extending along the length direction of the cavity body.
  • An interval between the two first positioning ribs 14 and an interval between the two second positioning ribs 15 are both smaller than the thickness of the PTC heating component, an interval between the first positioning rib 14 and the second positioning rib 14 at the upper part and an interval between the first positioning rib 14 and the second positioning rib 15 at the lower part are both smaller than the width of the radiating ribs 13, hence, when the radiating matrix is molded, the influence on the PTC heating component can be reduced as much as possible.
  • the radiating fins 13 at the top and bottom of the cavity body are parallel and equidistantly arrayed, the shape of each radiating fin 13 is of a convex concave corrugated structure, and in the present embodiment, the surface of the radiating fins are wavy curve surfaces.
  • the radiating matrix is of an integrally molded structure and made of an aluminum profile, and specifically, the cavity body, the radiating fins, the first positioning ribs and the second positioning ribs are integrally made of the aluminum profile, and the radiating fins are made from backing-off cutting machining by a machine tool at the top and bottom of the radiating matrix.
  • the internal surface of the top of the cavity body 11 corresponding to the top surface of the PTC heating component has a low middle part 111 and two high ends 112, and the internal surface of the bottom of the cavity body corresponding to the bottom surface of the PTC heating component has a high middle part 113 and two low ends 114.
  • the present application further provides a sealed PTC thermister heater, comprising the radiating matrix 1 in the embodiment I , the PTC heating component 2 and waterproof sealing parts 3, wherein the PTC heating component 2 is positioned between the first positioning ribs 14 and the second positioning ribs 15 and is pressed in the middle of the containing cavity, and one waterproof sealing part 3 is arranged at two ends of the containing cavity of the radiating matrix 1 respectively;
  • the PTC heating component 2 comprises a PTC thermister 21, two electrode terminals 22 connected with an external power source to be electrified to cause the PTC thermister to heat, metal electrode plates 23 and insulation layers 24, wherein one metal electrode plate 23 is attached to the upper surface and lower surface of the PTC thermister 21 respectively, the metal electrode plates 23 provide a working voltage for the PCT thermister 21, the two electrode terminals 22 are positioned on the same side of the PTC thermister, one end of the electrode terminals 22 is connected with a power source by a lead and the other end of the electrode terminal
  • the embodiment III differs from the embodiment I in that the shape of the radiating fins on the radiating matrix is a zigzag curve surface.

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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)
  • Resistance Heating (AREA)
EP16732215.5A 2015-08-03 2016-05-13 Substrat de dissipation de chaleur et dispositif de chauffage à thermistance à coefficient de température positif du type à joint d'étanchéité Active EP3154311B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510482014.6A CN105025596B (zh) 2015-08-03 2015-08-03 一种散热基体及密封型ptc热敏电阻加热器
PCT/CN2016/081996 WO2017020622A1 (fr) 2015-08-03 2016-05-13 Substrat de dissipation de chaleur et dispositif de chauffage à thermistance à coefficient de température positif du type à joint d'étanchéité

Publications (3)

Publication Number Publication Date
EP3154311A1 true EP3154311A1 (fr) 2017-04-12
EP3154311A4 EP3154311A4 (fr) 2017-11-29
EP3154311B1 EP3154311B1 (fr) 2019-12-11

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ID=54415189

Family Applications (1)

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EP16732215.5A Active EP3154311B1 (fr) 2015-08-03 2016-05-13 Substrat de dissipation de chaleur et dispositif de chauffage à thermistance à coefficient de température positif du type à joint d'étanchéité

Country Status (3)

Country Link
EP (1) EP3154311B1 (fr)
CN (2) CN110730519A (fr)
WO (1) WO2017020622A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120467A1 (de) * 2017-09-06 2019-03-07 Dbk David + Baader Gmbh Heizer und Verfahren zu dessen Herstellung und Heizregister
FR3073038A1 (fr) * 2017-10-30 2019-05-03 Valeo Systemes Thermiques Tube pour dispositif de chauffage pour vehicule automobile a relief en saillie vers l'interieur
FR3077459A1 (fr) * 2018-01-31 2019-08-02 Valeo Systemes Thermiques Unite de chauffe, radiateur de chauffage et boitier de climatisation, notamment de vehicule automobile

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CN110730519A (zh) * 2015-08-03 2020-01-24 深圳山源电器股份有限公司 一种散热基体及密封型ptc热敏电阻加热器
DE102017121063A1 (de) * 2017-05-24 2018-11-29 Webasto SE Heizleiter sowie Heizgerät
CN109246861A (zh) * 2018-08-21 2019-01-18 无锡国威陶瓷电器有限公司 一种ptc发热器件
CN109041283A (zh) * 2018-08-21 2018-12-18 宿州国威热敏新材料有限公司 一种ptc热敏材料发热器件的散热条及其制造方法和用途
CN113811031B (zh) * 2021-08-20 2023-08-22 曹黎霞 一种ptc加热器

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US6455822B1 (en) * 2000-10-11 2002-09-24 Mega Dynamics Ltd. Heat sink for a PTC heating element and a PTC heating member made thereof
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CN203748024U (zh) * 2013-12-06 2014-07-30 广东恒美电热科技股份有限公司 一种密集型正温度系数热敏电阻加热器
CN203722843U (zh) * 2013-12-25 2014-07-16 镇江东方电热科技股份有限公司 防氧化粉尘的ptc电加热器
CN204350324U (zh) * 2014-12-11 2015-05-20 周学明 一种铲片式超导发热模组
CN106851868B (zh) * 2015-04-08 2020-08-14 无锡国威陶瓷电器有限公司 一种热敏陶瓷发热器的发热体
CN110730519A (zh) * 2015-08-03 2020-01-24 深圳山源电器股份有限公司 一种散热基体及密封型ptc热敏电阻加热器
CN204859578U (zh) * 2015-08-03 2015-12-09 深圳山源电器股份有限公司 一种散热基体及密封型ptc热敏电阻加热器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017120467A1 (de) * 2017-09-06 2019-03-07 Dbk David + Baader Gmbh Heizer und Verfahren zu dessen Herstellung und Heizregister
FR3073038A1 (fr) * 2017-10-30 2019-05-03 Valeo Systemes Thermiques Tube pour dispositif de chauffage pour vehicule automobile a relief en saillie vers l'interieur
FR3077459A1 (fr) * 2018-01-31 2019-08-02 Valeo Systemes Thermiques Unite de chauffe, radiateur de chauffage et boitier de climatisation, notamment de vehicule automobile

Also Published As

Publication number Publication date
CN105025596A (zh) 2015-11-04
EP3154311B1 (fr) 2019-12-11
CN105025596B (zh) 2022-05-24
CN110730519A (zh) 2020-01-24
EP3154311A4 (fr) 2017-11-29
WO2017020622A1 (fr) 2017-02-09

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