CN2193634Y - Positive coefficient resistance heating device - Google Patents
Positive coefficient resistance heating device Download PDFInfo
- Publication number
- CN2193634Y CN2193634Y CN 94212488 CN94212488U CN2193634Y CN 2193634 Y CN2193634 Y CN 2193634Y CN 94212488 CN94212488 CN 94212488 CN 94212488 U CN94212488 U CN 94212488U CN 2193634 Y CN2193634 Y CN 2193634Y
- Authority
- CN
- China
- Prior art keywords
- positive temperature
- temperature coefficient
- coefficient resistor
- metal
- electrode surface
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a resistance heating device with a positive temperature coefficient, which is composed of a plurality of resistance elements with positive temperature coefficients and is at least composed of a metal heat radiating element which is provided with a flat metal surface for holding the resistance elements with positive temperature coefficients. One electrode surface of the elements is relative to the flat metal surface. A sticking layer is averagely coated between the electrode surface and the flat metal surface, the sticking layer is made of insulating glue, and the thickness of the sticking layer is between 5 microns to 20 microns.
Description
The present invention is relevant with heating element, particularly about a kind of positive temperature coefficient resistor heater.
Press, in the U.S. the 4th, 414, disclosing in No. 052 patent case has a kind of comparatively progressive positive temperature coefficient resistor heating element, being characterized as of this heating element made the electrode surface of positive temperature coefficient resistor sheet wavy, by this, when the metal fin surface that is coated with the electric insulation sticker engages with this electrode surface, each crest of this electrode surface can directly contact with the surface of metal fin, conduct in order to formation, formed space then can be used to filling electric insulation sticker between the surface of each trough and metal fin, with so that positive temperature coefficient resistor sheet and metal fin amplexiform together closely.
Though aforementioned this kind positive temperature coefficient resistor heating element can solve the defective of common component, reduce it because of spring heat is tired when engaging positive temperature coefficient resistor sheet and metal fin and compress ability with biasing spring, and disappearances such as gap discharge that is caused when utilizing conducting resinl to engage positive temperature coefficient resistor sheet and metal fin and flame flower phenomenon, but it is not desirable to the greatest extent yet, for example, the positive temperature coefficient resistor sheet is generally all made with ceramic material at present, when reality is made, desire sinters potsherd into surface to be had wavy and is not easy, and disqualification rate is very high, moreover, the positive temperature coefficient resistor sheet since only mat crest part contact with metal fin, the contact area of the two is little, therefore, can't effectively disperse heat energy.
Therefore, main purpose of the present invention is promptly providing a kind of positive temperature coefficient resistor heater, and it has comparatively superior heat conduction than the dust head and conducts.
Another object of the present invention is then providing a kind of positive temperature coefficient resistor heater, and its manufacturing cost is low than the dust head.
Therefore, for reaching aforesaid purpose, positive temperature coefficient resistor heater of the present invention includes at least one positive temperature coefficient resistor element, respectively is provided with an electrode surface in its opposite both sides; One metal heat sink has a planar metal face, is used for this positive temperature coefficient resistor element of bearing, and one of this element electrode surface is in the face of this planar metal face; And an adhesion coating, on average be coated between the corresponding with it electrode surface of this planar metal face, in order to the two is adhered to each other; Each electrode surface that it is characterized in that this positive temperature coefficient resistor element is to be flat condition, and this adhesion coating is made by electric insulation glue, and its average thickness is between 5 μ m～20 μ m.
Below, lift a preferred embodiment of the present utility model and conjunction with figs. now and be described further, wherein:
Fig. 1 is the stereogram of the utility model one preferred embodiment.
Fig. 2 is the exploded view of the utility model one preferred embodiment.
Fig. 3 is the utility model one preferred embodiment cutaway view on the 3-3 direction in first figure.
Shown in each figure, positive temperature coefficient resistor heater 10 of the present invention is made of four electrical temperature coefficient resistor discs 20, two heat dissipation metal assemblies 40.
Respectively to have a rectangular body 22 be to be formed by the ceramic material sintering to this positive temperature coefficient resistor sheet 20, and two metal electrode faces 24,26 are deposited on respectively on the upper and lower surface of these body 22 parallel flat.
Respectively this heat dissipation metal assembly 40 has two long metal sheet bars 42, an and wavy sheet metal 44 that is fixed in 42 of this two long metal sheets bars, respectively this long metal sheet bar 42 all has smooth interior outer surface 424,426, this wavy sheet metal 44 has a plurality of fin 442, and a plurality of crests 444 that are positioned at 442 of two adjacent fin, wherein, each crest 444 of homonymy is welded on the inner surface 424 of same long metal sheet bar 42, in addition, two power supply bond ends 46,48 are fixed in a respectively wherein end of a long metal sheet 42 of this heat dissipation metal assembly 40 respectively.
Respectively this positive temperature coefficient resistor sheet 20 is folded in 40 of two heat dissipation metal assemblies in regular turn with arranging, last heat dissipation metal assembly 40 is with the outer surface 426 of one long metal sheet bar 42 and pole-face 24 relative the amplexiforming that power on of this positive temperature coefficient resistor sheet 20 respectively, following heat dissipation metal assembly 40 is with the outer surface 426 of one long metal sheet bar 42 and bottom electrode face 26 relative the amplexiforming of this positive temperature coefficient resistor sheet 20 respectively, aforementioned outer surface 426 with each electrode surface 24,26 amplexiform before, apply an adhesion coating 60 in advance, in present embodiment, this adhesion coating is formed by the silicon adhesive (Silicone Adhesive) of trade mark by SYLGARD.This silicon adhesive has electric insulation character, and its flowability is quite good, therefore, can on average be coated on the object surface by thickness as thin as a wafer.Feature of the present utility model promptly be in this outer surface 426 average apply layer thicknesses as thin as a wafer this kind silicon adhesive of (for example 5～20 μ m) amplexiform together adhesion coating 60 as being used for this electrode surface 24,26 respectively, in addition, therefore because this adhesion coating 60 as thin as a wafer, also will making respectively, this electrode surface 24,26 and this outer surface 426 have electric conductivity.Certainly, better in order to make conductivity, also can mix metal powder with 2%～10%, for example silver, nickel or aluminium powder in this kind silicon adhesive.
By as can be known aforementioned, heater of the present invention owing to need not utilize biasing spring that each positive temperature coefficient resistor element and heat dissipation metal assembly are combined closely, does not therefore promptly have the hot tired problem of part; Moreover, owing to utilized the fit adjacent surface of each positive temperature coefficient resistor element and heat dissipation metal assembly of the minimum adhesive of thickness, therefore be extruded and take place the phenomenon of bridge joint short circuit except reaching closely sticking neat purpose and not having adhesive, more make to have excellent electrically conducting between aforementioned adjacent surface.In addition, each positive temperature coefficient resistor sheet in the heater of the present invention amplexiforms with the planar metal face of smooth electrode surface and each metal heat sink, therefore on manufacturing cost, be low not only, and because the reduction of thermal impedance make in the output of heat energy can be height than the dust head than the dust head.
Claims (5)
1, a kind of positive temperature coefficient resistor heater includes:
At least one positive temperature coefficient resistor element respectively is provided with an electrode surface in its relative both sides;
One metal heat sink has a planar metal face with this positive temperature coefficient resistor element of bearing, and an electrode surface of this resistive element is in the face of this planar metal face; And
One adhesion coating on average is coated between this planar metal face and corresponding electrode surface, in order to the two is adhered to each other;
It is characterized in that:
Each electrode surface of this positive temperature coefficient resistor element is flat condition, and this adhesion coating is made up of electric insulation glue, and its thickness is between 5 μ m～20 μ m.
2, positive temperature coefficient resistor heater according to claim 1, wherein this metal heat sink includes a long metal sheet bar, and the one side surface promptly forms this planar metal face; The opposite side surface that a plurality of fin are separated by and are turned up the soil and be attached at this long metal sheet bar.
3, positive temperature coefficient resistor heater according to claim 1 and 2, wherein more include another metal heat sink, be that this planar metal face is attached to by another adhesion coating with between this electrode surface with its planar metal face another electrode surface in the face of this positive temperature coefficient resistor element.
4, positive temperature coefficient resistor heater according to claim 1 and 2, wherein this adhesion coating is to add 2%～10% metal powder in electric insulation glue.
5, positive temperature coefficient resistor heater according to claim 2, wherein these a plurality of fin are taken a metal lengthy motion picture and it are bent to and have the wavy of most crests and form, and wherein each adjacent peaks is attached on the side surface of this long metal sheet bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212488 CN2193634Y (en) | 1994-05-20 | 1994-05-20 | Positive coefficient resistance heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94212488 CN2193634Y (en) | 1994-05-20 | 1994-05-20 | Positive coefficient resistance heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2193634Y true CN2193634Y (en) | 1995-03-29 |
Family
ID=33829320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94212488 Expired - Fee Related CN2193634Y (en) | 1994-05-20 | 1994-05-20 | Positive coefficient resistance heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2193634Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016011927A1 (en) * | 2014-07-21 | 2016-01-28 | 宋正贤 | Electric heating device and preparation method therefor |
| CN105960031A (en) * | 2014-07-21 | 2016-09-21 | 谢彦君 | Electric heating device and preparation method thereof |
| CN106604422A (en) * | 2014-07-21 | 2017-04-26 | 谢彦君 | Electric heater and preparation method thereof |
-
1994
- 1994-05-20 CN CN 94212488 patent/CN2193634Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016011927A1 (en) * | 2014-07-21 | 2016-01-28 | 宋正贤 | Electric heating device and preparation method therefor |
| CN105960031A (en) * | 2014-07-21 | 2016-09-21 | 谢彦君 | Electric heating device and preparation method thereof |
| CN106604422A (en) * | 2014-07-21 | 2017-04-26 | 谢彦君 | Electric heater and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |