CN111315045A - Electric heater - Google Patents
Electric heater Download PDFInfo
- Publication number
- CN111315045A CN111315045A CN202010232563.9A CN202010232563A CN111315045A CN 111315045 A CN111315045 A CN 111315045A CN 202010232563 A CN202010232563 A CN 202010232563A CN 111315045 A CN111315045 A CN 111315045A
- Authority
- CN
- China
- Prior art keywords
- insulation sheet
- sheet
- electric heater
- aluminum pipe
- heat conduction
- 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
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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
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- 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
-
- 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
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
Landscapes
- Resistance Heating (AREA)
Abstract
The invention relates to an electric heater, which comprises at least one heater, wherein the heater comprises a heating core, a heat conduction aluminum pipe and a radiating fin, and is characterized in that: the heating core comprises a first insulation sheet, a second insulation sheet and a third insulation sheet, wherein a resistance wire is wound on the second insulation sheet and the third insulation sheet, the second insulation sheet is located between the first insulation sheet and the third insulation sheet, the first insulation sheet, the second insulation sheet and the third insulation sheet are arranged in an inner cavity of the heat conduction aluminum pipe, the inner wall of the heat conduction aluminum pipe is compressed by the first insulation sheet, the second insulation sheet and the third insulation sheet, connecting terminals are arranged at two ends of the second insulation sheet respectively, and the connecting terminals are respectively exposed out of a port of the heat conduction aluminum pipe. The invention has simple and reasonable structure and is environment-friendly.
Description
Technical Field
The invention relates to a resistance wire heater, in particular to an electric heater for replacing a PTC heater.
Background
PTC heaters are often arranged in electric heating appliances needing hot air blowing, such as household air conditioners, warm air blowers, electric fireplaces, clothes dryers and the like. However, the PTC electric heater has 2-2.5 times of impulse current, and the PTC heating sheet is not environment-friendly.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an electric heater adopting resistance wires for heating.
The above purpose is realized by the following technical scheme:
the utility model provides an electric heater, includes at least one heater, the heater includes heating core, heat conduction aluminum pipe and fin, its characterized in that: the heating core comprises a first insulation sheet, a second insulation sheet and a third insulation sheet, wherein a resistance wire is wound on the second insulation sheet and the third insulation sheet, the second insulation sheet is located between the first insulation sheet and the third insulation sheet, the first insulation sheet, the second insulation sheet and the third insulation sheet are arranged in an inner cavity of the heat conduction aluminum pipe, the inner wall of the heat conduction aluminum pipe is compressed by the first insulation sheet, the second insulation sheet and the third insulation sheet, connecting terminals are arranged at two ends of the second insulation sheet respectively, and the connecting terminals are respectively exposed out of a port of the heat conduction aluminum pipe.
The technical scheme can be further improved by the following measures:
and heat-conducting silicone grease strips are respectively arranged on two sides of the second insulating sheet and are positioned between the first insulating sheet and the third insulating sheet.
The outer walls of the two sides of the heat-conducting aluminum pipe are respectively provided with a small groove which is concave inwards.
The electric heater comprises two heaters, two supports and a temperature controller, wherein the two heaters are erected between the two supports side by side, and the temperature controller is arranged on one support and is positioned between the two heaters.
The first insulating sheet, the second insulating sheet and the third insulating sheet are mica sheets.
The above technical measures can be used alternatively or in combination as long as they do not conflict with each other.
The invention has simple and reasonable structure, insulated appearance and appearance similar to PTC heater, but the heating element is the traditional resistance wire. The invention has the advantages that:
1. the surface temperature can be made higher than the PTC. The surface temperature of the insulating PTC heaters can reach up to 300 c, which is generally up to 250 c.
2, the PTC electric heater has 2-2.5 times of impulse current, and the invention is pure resistance load without impulse current.
3, the power of the PTC electric heater is attenuated by about 10% after the PTC electric heater works for one year, and the power of the invention is constant.
4. The invention is insulated by mica sheets, and is more reliable than polyimide films of PTC electric heaters.
5, the power of the PTC electric heater is changed along with the air quantity and the temperature and the external conditions, and the power of the PTC electric heater is constant.
6, the PTC heating sheet is not environment-friendly (exempted), but the material of the invention is environment-friendly.
Drawings
FIG. 1 is a perspective view of one embodiment of the present invention;
FIG. 2 is a front view of the embodiment shown in FIG. 1;
FIG. 3 is a top view of the embodiment shown in FIG. 1;
FIG. 4 is an exploded perspective view of the embodiment of FIG. 1;
fig. 5 is a schematic sectional view of a heater according to another embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An electric heater as shown in fig. 1-4 comprises two heaters 1, wherein the heaters 1 comprise a heating core 11, a heat-conducting aluminum tube 12 and a heat sink 13. The heating core 11 includes a first insulating sheet 111, a second insulating sheet 112 and a third insulating sheet 113 wound with a resistance wire 114, the second insulating sheet is in the first insulating sheet with between the third insulating sheet, the first insulating sheet, the second insulating sheet and the third insulating sheet are arranged in the inner cavity of the heat conduction aluminum pipe 12, the inner wall of the heat conduction aluminum pipe 12 will the first insulating sheet 111, the second insulating sheet 112 and the third insulating sheet 113 are compressed, the two ends of the second insulating sheet are respectively provided with a connecting terminal 115, the connecting terminal 115 is respectively followed the port of the heat conduction aluminum pipe 12 is exposed.
The two heat generators 1 can be connected in series or in parallel according to the use requirement.
The first, second, and third insulating sheets 111, 112, and 113 are mica sheets.
The outer walls of the two sides of the heat-conducting aluminum pipe 12 are respectively provided with a small concave groove 121. The heat conductive aluminum pipe 12 is thin-walled and oblong.
The electric heater also comprises two brackets 2 and a temperature controller 3, the two heaters 1 are erected between the two brackets 2 side by side, and the temperature controller 3 is arranged on one bracket 2 and is positioned between the two heaters 1.
In another embodiment shown in fig. 5, two sides of the second insulating sheet 112 are respectively provided with a thermal grease strip 116, and the thermal grease strip 116 is located between the first insulating sheet 111 and the third insulating sheet 113. The heat-conducting silicone grease strip is insulated from the first insulating sheet 111 and the third insulating sheet 113 in a matched mode, and therefore reliability is improved. The heat-conducting aluminum pipe 12 is pressed by an oil press, so that the resistance wire and the insulation sheet are tightly attached to the heat-conducting aluminum pipe 12, and fig. 5 shows the state of each part before pressing and the pressure direction. Other structures of this embodiment refer to the previous embodiment, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. In addition, the technical features mentioned in the embodiments of the present invention may be combined with each other as long as they do not conflict with each other.
Claims (5)
1. The utility model provides an electric heater, includes at least one heater, the heater includes heating core, heat conduction aluminum pipe and fin, its characterized in that: the heating core comprises a first insulation sheet, a second insulation sheet and a third insulation sheet, wherein a resistance wire is wound on the second insulation sheet and the third insulation sheet, the second insulation sheet is located between the first insulation sheet and the third insulation sheet, the first insulation sheet, the second insulation sheet and the third insulation sheet are arranged in an inner cavity of the heat conduction aluminum pipe, the inner wall of the heat conduction aluminum pipe is compressed by the first insulation sheet, the second insulation sheet and the third insulation sheet, connecting terminals are arranged at two ends of the second insulation sheet respectively, and the connecting terminals are respectively exposed out of a port of the heat conduction aluminum pipe.
2. The electric heater of claim 1, wherein: and heat-conducting silicone grease strips are respectively arranged on two sides of the second insulating sheet and are positioned between the first insulating sheet and the third insulating sheet.
3. The electric heater of claim 1, wherein: the outer walls of the two sides of the heat-conducting aluminum pipe are respectively provided with a small groove which is concave inwards.
4. The electric heater of claim 1, wherein: the electric heater comprises two heaters, two supports and a temperature controller, wherein the two heaters are erected between the two supports side by side, and the temperature controller is arranged on one support and is positioned between the two heaters.
5. The electric heater of claim 1, wherein: the first insulating sheet, the second insulating sheet and the third insulating sheet are mica sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232563.9A CN111315045A (en) | 2020-03-28 | 2020-03-28 | Electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232563.9A CN111315045A (en) | 2020-03-28 | 2020-03-28 | Electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111315045A true CN111315045A (en) | 2020-06-19 |
Family
ID=71162388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010232563.9A Pending CN111315045A (en) | 2020-03-28 | 2020-03-28 | Electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111315045A (en) |
-
2020
- 2020-03-28 CN CN202010232563.9A patent/CN111315045A/en active Pending
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |