CN2412343Y - Carbon powder thin film electrothermal appts. - Google Patents
Carbon powder thin film electrothermal appts. Download PDFInfo
- Publication number
- CN2412343Y CN2412343Y CN 99251843 CN99251843U CN2412343Y CN 2412343 Y CN2412343 Y CN 2412343Y CN 99251843 CN99251843 CN 99251843 CN 99251843 U CN99251843 U CN 99251843U CN 2412343 Y CN2412343 Y CN 2412343Y
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- CN
- China
- Prior art keywords
- carbon powder
- powder film
- attachment
- electric heater
- model
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- 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 relates to an electrothermal apparatus of carbon powder films, which comprises electrodes. The utility model is characterized in that the surface of a temperature-resist insulating attachment is provided with one layer of carbon powder film, and two electrodes which cause the whole carbon powder film to be electrified are arranged on the carbon powder film. The utility model has the advantages of simple structure, convenient fabrication, stable operation, low cost, long service life, etc., and the electrothermal conversion efficiency can reach over 98 percent. The utility model is suitable for various electrothermal apparatuses with low heating temperature.
Description
The utility model relates to a kind of electric heater, and is particularly a kind of with carbon or the graphite electric heater as heater.
Existing electric heater generally is that the principle that can generate heat after utilizing metal by electric current is made, and these are that the electric heater of heater is applicable to heat with the metal, and exists following deficiency for the not high thing of heating of temperature:
1. power is big, metallic object temperature height, and generally about 800 ℃, well-known, the conduction of heat energy becomes gradient to carry out, and the temperature difference between heater and the heated body is big more, and its gradient is just big more, and the efficient that heat is transmitted greatly reduces.So that water is heated to be example, water as heated body contacts with the metallic object of heating, because metal body surface temperature height, the water of contact is with it vaporized rapidly, between metal body surface and heated body, form one deck vaporization layer, because gas is the non-conductor of heat, thereby greatly reduce the efficient that its heat is transmitted, wasted a large amount of heat energy.
2. the unit of all heatings all comes together on the very little volume, and is very little with the contact area of heated body, has only the heat-generating units of metal surface and heated body to carry out effective heat exchange.Cause the thermal conversion efficiency between heater and the heated body very low, consumed many heat energy.
In order to solve above-mentioned deficiency, relevant technologies personnel attempt to make electric heater with graphite fibre as heater, though its electric heating effect has bigger improvement, but the manufacturing process complexity of graphite fibre, the graphite fibre skewness of making, resistivity is not of uniform size, and work is extremely unstable, and burn out easily, useful life is short.
The purpose of this utility model just provides a kind of carbon powder film electric heater of simple in structure, easily manufactured and working stability, and it can improve thermal conversion efficiency, long service life.
The purpose of this utility model is to realize that by such technical scheme it includes electrode, it is characterized in that: the attachment surface in the heatproof insulation is provided with one deck carbon powder film, and the carbon powder film is provided with two electrodes that make whole carbon powder film energising.
The carbon powder film is that the resistivity distribution of this film is even with carbon or graphite particulate and the fused a kind of film handling the back and make of a kind of organic substance, and resistivity do not change with the variation that adds voltage thereon, and it is very stable to work.When after adding voltage between two electrodes, whole carbon powder film is because of all generating heat by electric current, the carbon powder film makes very thin, fully expanded the contact area between heater and the heated body, between equal energy of each heat-generating units in the carbon powder film and the heated body, as liquid, gas or solid etc., carry out heat exchange effectively, thereby improved heat exchanger effectiveness significantly; Temperature according to the required heating of heated body, can make the carbon powder film of respective thickness, make the carbon powder film under the required voltage that adds, the temperature of heating and the temperature of the required heating of heated body are close, reduced the gradient that heat is transmitted between heater and the heated body, avoided having improved electric conversion efficiency significantly because of the excessive produce power loss of gradient between heater and the heated body.
Owing to adopted technique scheme, the utlity model has following advantage:
1. simple in structure, easily manufactured, with low cost;
2. be attached on the attachment of heatproof insulation owing to the carbon powder film adopts the spraying plating mode, so resistivity distribution is even energising back working stability, long service life;
3. saving electric energy, the thermal conversion efficiency height: since the carbon powder film can expand to greatest extent and heated body between contact area, make all heat-generating units all can carry out heat exchange effectively with heated body, therefore, its heat conducting electric conversion efficiency can reach more than 98%;
4. applied widely: it can be lower than below 380 volts at voltage, temperature is lower than in the scope below 160 ℃, make the product of various voltages, power, shape and the temperature of heating according to user's needs, thereby it has the very wide scope of application.
Description of drawings of the present utility model is as follows:
Fig. 1 is the structural representation of first kind of embodiment of the utility model;
Fig. 2 is the structural representation of second kind of embodiment of the utility model;
Fig. 3 is the structural representation of the third embodiment of the utility model.
Among the figure: 1. electrode; 2. attachment; 3. carbon powder film; 4. body; 5. metallic object; 6. conductor.
The utility model is described in further detail below in conjunction with drawings and Examples:
Shown in Fig. 1,2 or 3, the utility model includes electrode 1, it is characterized in that: attachment 2 surfaces in the heatproof insulation are provided with one deck carbon powder film 3, and carbon powder film 3 is provided with two electrodes 1 that make whole carbon powder film 3 energisings.
As shown in Figure 1, attachment 2 can be in a tubular form, and carbon powder film 3 is arranged on the inwall of tubulose attachment; As shown in Figure 2, attachment 2 also can be the airtight and evacuated bodys 4 of inner chamber in two ends, and carbon powder film 3 is arranged on the inwall of body 4; As shown in Figure 3, attachment 3 can also be plane.
Shown in Fig. 1,2 or 3, electrode 1 is to contact and the metallic object 5 affixed with attachment 2 the intrinsic conductor of being convenient to power up 6 on the metallic object 5 with carbon powder film 3.
Attachment 2 can be made with ceramic material, also can make with glass material, can also make with plastics and cotton material.
Claims (8)
1. a carbon powder film electric heater includes electrode (1), it is characterized in that: attachment (2) surface in the heatproof insulation is provided with one deck carbon powder film (3), and carbon powder film (3) is provided with two electrodes (1) that make whole carbon powder film (3) energising.
2. carbon powder film electric heater as claimed in claim 1 is characterized in that: attachment (2) in a tubular form, carbon powder film (3) is arranged on the inwall of tubulose attachment.
3. carbon powder film electric heater as claimed in claim 1 is characterized in that: attachment (2) is the airtight and evacuated bodys of inner chamber (4) in two ends, and carbon powder film (3) is arranged on the inwall of body (4).
4. carbon powder film electric heater as claimed in claim 1 is characterized in that: attachment (2) is plane.
5. as claim 1,2,3 or 4 described carbon powder film electric heaters, it is characterized in that: electrode (1) is to contact with carbon powder film (3) and the metallic object (5) affixed with attachment (2), and metallic object (5) is gone up the intrinsic conductor of being convenient to power up (6).
6. carbon powder film electric heater as claimed in claim 5 is characterized in that: attachment (2) is to make with ceramic material.
7. carbon powder film electric heater as claimed in claim 5 is characterized in that: attachment (2) is to make with glass material.
8. carbon powder film electric heater as claimed in claim 5 is characterized in that: attachment (2) is to make with plastics and cotton material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251843 CN2412343Y (en) | 1999-12-25 | 1999-12-25 | Carbon powder thin film electrothermal appts. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251843 CN2412343Y (en) | 1999-12-25 | 1999-12-25 | Carbon powder thin film electrothermal appts. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2412343Y true CN2412343Y (en) | 2000-12-27 |
Family
ID=34036187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99251843 Expired - Fee Related CN2412343Y (en) | 1999-12-25 | 1999-12-25 | Carbon powder thin film electrothermal appts. |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2412343Y (en) |
-
1999
- 1999-12-25 CN CN 99251843 patent/CN2412343Y/en not_active Expired - Fee Related
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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 |