CN2766480Y - Electric heating plate - Google Patents
Electric heating plate Download PDFInfo
- Publication number
- CN2766480Y CN2766480Y CN 200520003470 CN200520003470U CN2766480Y CN 2766480 Y CN2766480 Y CN 2766480Y CN 200520003470 CN200520003470 CN 200520003470 CN 200520003470 U CN200520003470 U CN 200520003470U CN 2766480 Y CN2766480 Y CN 2766480Y
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- China
- Prior art keywords
- tube
- hot plate
- electric hot
- metal
- pipe
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- Expired - Lifetime
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Abstract
The utility model relates to an electric hot plate, particularly an electric hot plate which adopts a metal tube formed by extrusion molding as the outer tube of an electric heating tube. The utility model provides an electric hot plate which adopts a U-shaped metal tube formed by extrusion molding as the outer tube of an electric heating tube. The electric hot plate is provided with the metal plate and the electric heating tube, wherein the electric heating tube is arranged at the bottom of the metal plate and is provided with an outer metal tube. The cross section of the outer metal tube is U-shaped, and the top part is a plane. An inner tube is arranged in the outer metal tube, a heating wire is arranged in the inner tube, insulating media are filled between the inner wall of the inner tube and the heating wire, and both ends of the heating wire are respectively provided with a wire connecting terminal. Because the metal tube with a special shape, which is formed by extrusion molding, is used as the outer tube of the electric heating tube, the cross section of the metal tube is U-shaped and the top part of the metal tube is a plane, the top plane of the electric heating tube is in tight junction with the bottom of a metal aluminum plate, and the outer metal tube is a metal tube shaped in extrusion process, the electric heating tube and the electric hot plate, and the electric hot plate and the used electric heating appliance have good contact and high thermal conduction efficiency, and the heating time can be shortened.
Description
Technical field
The utility model relates to a kind of electric hot plate, and adopt the electric hot plate of extrusion modling metal tube as the electrothermal tube outer tube especially a kind of having.
Background technology
Existing electrothermal tube commonly used is provided with 1 metal tube, establishes heating wire in metal tube, and fills magnesia powder, or at the fixing electric heating element of the outer surface of pipe, the ubiquity heat transfer efficiency is low, thermal waste greatly, be difficult for shortcoming such as repair and replacement.Notification number comprises a metal outer pipe for the patent of CN2514614Y provides a kind of electrothermal tube, is filled with magnesia powder in the pipe.A metal eduction rod is equipped with at the two ends of pipe respectively, be connected with a low-power minor diameter coil heating silk between the two metal eduction rods, the periphery of a metal eduction rod is with a metal extraction tube therein again, be filled with dielectric between metal extraction tube and the metal eduction rod, be connected with a high power large-diameter coil heating wire between metal extraction tube and another root metal eduction rod.The patent No. provides a kind of electrothermal tube for the patent of ZL00228351.4, comprise outer tube, interior pipe and electric heating element, and the vacuum layer for sealing between the interior pipe, the low boiling heat transfer medium be full of in the vacuum layer, the inner chamber of pipe in electric heating element places, the outer surface of outer tube is provided with fin.Notification number is that 1055097 patent application discloses a kind of electrothermal tube, be in the metal tube of resistance wire is housed, to pour into the boric acid of magnesia (or quartz sand) and a small amount of (2.5%-7.5%) as insulating material, heating is roasted again, make boric acid thoroughly resolve into boron oxide and water vapour, water vapour is discharged, and boron oxide and magnesia (quartz sand) bonding becomes one.The patent No. provides a kind of new-type carbon fiber electric heating tube for the patent of ZL03214689.2, it adopts carbon fiber bundle, carbon fiber knit band to replace common nichrome, molybdenum filament, tungsten filament material to make heater, carbon fiber exothermic part twines or attached on the insulator, power lead is connected with the end of carbon fiber exothermic part from the two ends of external insulation housing inner chamber respectively by connecting line.Be locked at last among the external insulation housing of making by quartzy class glass insulating material.The surface of insulation shell is provided with bleeding point outside, so that extract the gas in the external insulation housing out the formation vacuum, charges into inert gas again.
Summary of the invention
The utility model aims to provide and adopts the electric hot plate of U-shaped extrusion modling metal tube as the electrothermal tube outer tube a kind of having.
The utility model is provided with metallic plate and electrothermal tube, electrothermal tube is located at the bottom of metallic plate, said electrothermal tube is provided with outer metal tube, its cross section takes the shape of the letter U, and the top is the plane, is provided with interior pipe outside in the metal tube, in interior pipe, be provided with heating wire, fill dielectric between inner tube wall and heating wire, binding post is established at the heating wire two ends, is used to connect power line.
Said metallic plate is preferably the circular metal aluminium sheet.The top plan of electrothermal tube is connected with the metallic plate bottom, and said connection can be adopted welding.
Said outer metal tube is the extrusion modling pipe, selects steel pipe, aluminum pipe or copper pipe etc. for use.Said extrusion modling pipe is meant the metal tube by the extrusion process moulding.
Pipe can be selected copper pipe, aluminum pipe or steel pipe etc. for use in said.Said outer metal tube inner chamber is a round tube, and the diameter of round tube i.e. outer metal interior diameter is preferably identical with said interior pipe overall diameter.
Said dielectric can be selected magnesium powder etc. for use.
The utility model has the advantages that and adopt cross section to take the shape of the letter U, the top is that the extrusion modling metal tube of special shape on plane is as the outer tube of electrothermal tube, the top plan of electrothermal tube closely is connected with the metal aluminum sheet bottom, and outer metal tube is the metal tube by the extrusion process moulding, therefore between electrothermal tube and the electric hot plate, and having excellent contact between electric hot plate and the used electric heating appliance (for example pot body of electric food warmer), the heat-conducting efficiency height has shortened heating time.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the cross-sectional structure figure of the outer metal tube of the utility model embodiment.
Fig. 4 is applied to the structural representation of electric food warmer for the utility model embodiment.
Fig. 5 is the A-A cutaway view of Fig. 4.
Embodiment
As Figure 1-3, the utility model is provided with circular metal aluminium sheet 1 and electrothermal tube 2, and electrothermal tube 2 is located at the bottom of circular metal aluminium sheet 1.Electrothermal tube 2 is provided with outer metal tube 21, its cross section takes the shape of the letter U, top 211 is the plane, pipe 22 in being provided with in the metal tube 21 outside, in interior pipe 22, be provided with heating wire 23, fill dielectric 24 between the inwall of interior pipe 22 and heating wire 23, binding post 25 is established at heating wire 23 two ends, is used to connect power line.
Welding is adopted in the bottom of the top plan of annular electric heating tube 2 and metal aluminum sheet 1.The aluminum pipe that outer metal tube 21 adopts by the extrusion process moulding.The inner chamber of outer metal tube 21 is a round tube 212, and the diameter of round tube i.e. outer metal interior diameter is identical with said interior pipe overall diameter.The outer surface layer of interior pipe closely contacts with the interior surface layers of outer metal tube, and interior pipe 22 is selected copper pipe for use.Dielectric can be selected magnesium powder etc. for use.
As embodiment, when the cold resistance of heating wire is 22.63-26.40 Ω, when rated voltage was 120V, rated power was 600W; When the cold resistance of heating wire is 83.14-96.99 Ω, when rated voltage was 230V, rated power was 600W.Proof voltage is 1500V/2 second, and the cut-out electric current is 0.5mA, and cold insulation is more than the 10M Ω, when using rated voltage, leaks the Vent electric current and is no more than 0.5mA, is applicable to the domestic electric heating pot fully.When this electrothermal tube was used for the domestic electric heating pot, outer metal tube adopted the stove weldering and the bottom of metal aluminum sheet to weld, and metal aluminum sheet adopts the stove weldering to be connected with the bottom of a pan of pot body again.
As Fig. 4, shown in 5, outside annular, be provided with circular metal aluminium sheet 1 on the top plan of metal tube 21, adopt welding between the top plan of outer metal tube 21 and the metal aluminum sheet 1.The electric hot plate of this structure is applied to electric food warmer, circular metal aluminium sheet 1 tighten develop the end the pot body 3, promptly become a kind of heating time short, the heat efficiency is high, the electric food warmer of power consumptive province.Pot body 3 is established handle 31, can establish pot cover in addition.
Claims (8)
1, a kind of electric hot plate, it is characterized in that being provided with metallic plate and electrothermal tube, electrothermal tube is located at the bottom of metallic plate, said electrothermal tube is provided with outer metal tube, and its cross section takes the shape of the letter U, and the top is the plane, be provided with interior pipe outside in the metal tube, be provided with heating wire in interior pipe, fill dielectric between inner tube wall and heating wire, binding post is established at the heating wire two ends.
2, a kind of electric hot plate as claimed in claim 1 is characterized in that said metallic plate is the circular metal aluminium sheet.
3, a kind of electric hot plate as claimed in claim 1 is characterized in that the top plan of electrothermal tube is connected with the metallic plate bottom.
4, a kind of electric hot plate as claimed in claim 3 is characterized in that said connection employing welding.
5, a kind of electric hot plate as claimed in claim 1 is characterized in that said outer metal tube is the extrusion modling pipe, selects steel pipe, aluminum pipe or copper pipe for use.
6, a kind of electric hot plate as claimed in claim 1, it is characterized in that said in pipe select copper pipe, aluminum pipe or steel pipe for use.
7, a kind of electric hot plate as claimed in claim 1 is characterized in that said outer metal tube inner chamber is a round tube, and the diameter of round tube i.e. outer metal interior diameter is identical with said interior pipe overall diameter.
8, a kind of electric hot plate as claimed in claim 1 is characterized in that said dielectric selects the magnesium powder for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520003470 CN2766480Y (en) | 2005-01-14 | 2005-01-14 | Electric heating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520003470 CN2766480Y (en) | 2005-01-14 | 2005-01-14 | Electric heating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2766480Y true CN2766480Y (en) | 2006-03-22 |
Family
ID=36607118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520003470 Expired - Lifetime CN2766480Y (en) | 2005-01-14 | 2005-01-14 | Electric heating plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2766480Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104411031A (en) * | 2014-10-17 | 2015-03-11 | 芜湖市泰能电热器具有限公司 | A portable heating aluminum tube |
| CN110072300A (en) * | 2018-01-24 | 2019-07-30 | 青岛中邦凌电器有限公司 | A kind of novel aluminum heating coil and its manufacturing method |
-
2005
- 2005-01-14 CN CN 200520003470 patent/CN2766480Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104411031A (en) * | 2014-10-17 | 2015-03-11 | 芜湖市泰能电热器具有限公司 | A portable heating aluminum tube |
| CN110072300A (en) * | 2018-01-24 | 2019-07-30 | 青岛中邦凌电器有限公司 | A kind of novel aluminum heating coil and its manufacturing method |
| CN110072300B (en) * | 2018-01-24 | 2021-07-23 | 青岛中邦凌电器有限公司 | Aluminum heating ring and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150114 Granted publication date: 20060322 |