CN201369843Y - Electric heating tube - Google Patents
Electric heating tube Download PDFInfo
- Publication number
- CN201369843Y CN201369843Y CNU2009200515784U CN200920051578U CN201369843Y CN 201369843 Y CN201369843 Y CN 201369843Y CN U2009200515784 U CNU2009200515784 U CN U2009200515784U CN 200920051578 U CN200920051578 U CN 200920051578U CN 201369843 Y CN201369843 Y CN 201369843Y
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- electric heating
- heat
- heating tube
- protection device
- electric
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Abstract
The utility model discloses an electric heating tube belonging to the technical field of electric apparatus, and particularly relates to an electric heating tube with a thermal protection device. In the outer tube (1) of the heating tube, a draw bar (11), the thermal protection device (10), a heater strip (4) and a draw bar (11) are electrically connected in sequence, wherein, heat conducting materials (9) such as heat conducting silica gel and the like are arranged between the thermal protection device (10) and the outer tube (1) of the heating tube, and electric insulating materials (8) such as electric insulating silica gel and the like are arranged between the draw bars (11) and the inner wall of the outer tube (1) of the heating tube. Due to the simple structure, the utility model can solve the problem of burning a thermal protection element due to slow reaction speed or over-sensitivity to heat transfer in the prior electric heating tube, thereby achieving remarkable using effects.
Description
Affiliated technical field
The present invention relates to a kind of electrical heated appliance, belong to technical field of electric appliances, relate in particular to band thermel protection device electric heating tube, be widely used in the electrical equipment to liquid heat such as electric kettle, soy bean milk making machine.This electric heating tube draws rod, thermel protection device, heating wire for being electrically connected according to this, draws rod in its outer tube.
Background technology
Electric heater is because of convenient to use very popular, existing various electric heaters and technology in the actual life, the extensive metal heat-generating pipe that adopts, the heat-generating pipe of immersion type just, the core component that is electric heater also is the parts of sensitive for damages, this heat-generating pipe can not dry combustion method, and 10 seconds can be to burn out heat-generating pipe.For preventing that electric heating appliance from making overheated electric heater or its heat-generating pipe of burning of heating components and parts when the abnormal conditions such as job failure or lack of water, usually can heat-generating pipe or with circuit that the heating components and parts are connected on overtemperature protection system is set.
Traditional overtemperature protection components and parts; as fuse, be contained on the fixed metal plate that draws rod near electrothermal tube; owing to heat-generating pipe draws the rod part is that the athermic heating wire that leans on arrives the heat-generating pipe outer wall to heat conduction; again the temperature of heat-generating pipe outer wall is passed to fixed head, reaction speed is slow, often the fuse overheat fusion; at this moment; thereby overheated already the burning out of heat-generating pipe itself jeopardized heater, even causes fire, makes thermel protection device not play due protective effect.
For this reason; people carry out some improvements; as the patentee: the Huayuan Electrothermal Electric Appliances Factory, Guangzhou; patent (the patent No.: 95246326.1) of the title " with the electric heating glassware for drinking water of highly sensitive overtemperature protection " of application on December 18 nineteen ninety-five; open (bulletin) day: 1997.01.29; open (bulletin) number: CN2245936); this utility model discloses a kind of electric heating glassware for drinking water with highly sensitive overtemperature protection; with the electric heating tube of the metal shell that directly places water to be heated as water heating elements; this utility model is welded with the temperature sensing metal pipe on the metal shell of electric heating tube; overheated fuse element is installed among the temperature sensing metal pipe; thermal cut-off can sensitive be reacted to the variations in temperature of electric heating tube apace; when electric heating tube is overheated; fuse can fuse in very short time; cut off the electricity supply, make electric heating tube and electric heating glassware for drinking water be unlikely to burn out, thereby guarantee the safety of electricity consumption.
Also has the patentee: China National Real Estate Development New Technology Center Co., Ltd.; the name of application on April 6th, 2005 is called " tubular electric heating of band temp control switch and overtemperature protection system " (patent No.: 200510063082.5; open (bulletin) day: on October 11st, 2006; open (bulletin) number: patent CN1845643); this invention relates to a kind of electric heater, particularly a kind of tubular electric heating with temp control switch and overtemperature protection system.But its objective is the tubular electric heating that is to provide the little A.T.C of a kind of volume, safety and reliability.Mainly form by (1) metal tube (2) overtemperature protection system (3) temp control switch (4) alloy resistance wire (5) crystal magnesium oxide powder (6) flange (7) insulating ceramics body (8) power line (9) termination etc.Its characteristics are: it can be used to add hot water or other liquid.When heated water or other liquid reach the temperature value that we set, the temperature switch auto power off, heater quits work.Otherwise, the temperature switch energized, heater is reworked.
Above-mentioned two patented technologies can overcome the slow deficiency of some heat conduction reaction speeds of original technology; respectively overheated fuse element is installed among the temperature sensing metal pipe that welds on the metal shell of electric heating tube or directly sees heat protection components and parts (overtemperature protection system; temp control switch) is connected with alloy resistance wire in the metal shell of the electric heating tube of packing into; for in time responding to overtemperature; the overtemperature protection components and parts just must be near pyrotoxin; and pyrotoxin usually is hundreds of even thousands of degree high temperature; not only the running parameter to the overtemperature protection components and parts requires very high; and air pocket or continuous air bubbles appear in regular meeting when heating is used; can make localized hyperthermia to occur rapidly around the heat protection components and parts and make heat protection components and parts action or burn, influence the use of heater.
Certainly also have some more advanced technology, as adopt temperature sensor, control chip etc. accurately to control electric heater work, but adopting this technology not only to increase components and parts but also manufacturing cost and expense on small-sized heating electrical appliances such as electric kettle, soy bean milk making machine will be very high, unfavorable universal use.
So, how to reduce as far as possible under the condition of cost, overcoming the slow or too responsive deficiency of bringing of heat protection components and parts of prior art heat conduction reaction speed, effectively protect electrical heated appliance?
The utility model content
The utility model is slow or heat protection components and parts are too responsive burns the similar problems of bringing such as deficiency because of the heat conduction reaction speed to heat protection components and parts at existing electric heating tube, provides a kind of simple in structure, a kind of electric heating tube of heat protection obvious results
The utility model is achieved in that a kind of electric heating tube, and electrical connection is drawn rod 11, thermel protection device 10, heating wire 4, drawn rod 11 according to this in this heat-generating pipe outer tube 1, is provided with Heat Conduction Material 9 between described thermel protection device 10 and heat-generating pipe outer tube 1 inwall.
Described Heat Conduction Material 9 can adopt existing diversified Heat Conduction Material, is good with heat conductive silica gel or similar material.Silica gel is laminar, and it has good flexibility, can closely contact fully with heating object, like this, just can allow heat be delivered to required place.
Described connection draw the rod 11 and heat-generating pipe outer tube 1 inwall between be provided with electrical insulating material 8.
Described electrical insulating material 8 is good with electric insulation silica gel.The insulating barrier of silicon rubber is composited by silicon rubber and glass fabric, has high insulating property, and puncture voltage can reach 20～50KV/mm, so can relievedly use.
Described thermel protection device 10 is a thermal cut-off or as the temperature switch of bimetal plate heat protector, also can be the thermal cut-off use of connecting with temperature switch, if temperature switch can make temperature switch preferentially move near heating wire 4, reduces the thermal cut-off loss.
Be provided with thermostable heat-conductive filler 2 between described heating wire 4 and heat-generating pipe outer tube 1 inwall, heat-conducting filler 2 can adopt materials such as magnesium oxide.
A kind of electric heating tube of the present utility model has following beneficial effect:
1. a kind of electric heating tube of the present utility model, owing to adopt " being provided with Heat Conduction Material between thermel protection device and the heat-generating pipe outer tube wall " simple measures, overcome existing electric heating tube to heat protection components and parts because of the heat conduction reaction speed slowly or the too responsive problem of bringing of burning, simple in structure, result of use is obvious;
2. a kind of electric heating tube of the present utility model adopts different silica gel respectively as heat conduction or electrical insulating material, has good flexibility, is easy to realize safety guarantee.
Description of drawings
Below in conjunction with accompanying drawing the utility model is adopted a kind of electric heating tube of the present utility model, embodiment is elaborated.Described embodiment is that the mode with the indefiniteness example provides:
Fig. 1 is a kind of electric heating tube structure of the utility model schematic appearance;
Fig. 2 is for adopting a kind of electric heating tube A-A of the utility model to the vertical cut-away view of structure.
Marginal data: 1---heat-generating pipe outer tube 2---heat-conducting filler 4---heating wire 5---flange 6---porcelain bead 7---sealing silica gel 8---electric insulation silica gel 9---heat conductive silica gel 10---thermel protection device 11---draws rod
Embodiment
With reference to Fig. 1 a kind of electric heating tube structure schematic appearance and with reference to a kind of electric heating tube A-A of Fig. 2 to the vertical cut-away view of structure; in heat-generating pipe outer tube 1, be electrically connected according to this and draw rod 11; thermel protection device 10; heating wire 4; draw rod 11; be provided with Heat Conduction Material 9 between described thermel protection device 10 and heat-generating pipe outer tube 1 inwall; these Heat Conduction Material 9 heat conductive silica gels; connect to draw between rod 11 and heat-generating pipe outer tube 1 inwall and be provided with electrical insulating material 8; this electrical insulating material 8 is with electric insulation silica gel; thermel protection device 10 is a thermal cut-off; certainly can also be temperature switch; it also can be the thermal cut-off use of connecting with temperature switch; be high temperature oxidation resisting magnesium heat-conducting filler 2 between heating wire 4 and heat-generating pipe outer tube 1 inwall; draw the ports that rod 11 connects at heat-generating pipe outer tube 1 with being connected, adopt flange 5 and nonconducting porcelain bead 6 fixing and adopt sealing silica gel 7 to be tightly connected and seal respectively.
Isoparametric selection of heating wire 4 power and thermel protection device 10 use according to reality with the distance of heating wire 4 and select.Heating wire 4 heating powers add liquid such as hot water when operate as normal; the part heat is delivered to thermel protection device 10 outer heat-generating pipe outer tube 1, Heat Conduction Materials 9 and remakes and use thermel protection device 10; this temperature deficiency is so that thermel protection device 10 actions; when operation irregularities such as lack of water; heat-generating pipe outer tube 1 heats up rapidly, and is delivered to thermel protection device 10 very soon and makes its action, cuts off the electricity supply; heating wire 4 can not be worked and be lowered the temperature, so that protection electric heating tube and electrical equipment thereof.
Certainly, the invention is not restricted to address the embodiment shown in the accompanying drawing, modification and equivalent transformation that the spirit of Fan Yiben creation is done, or adopt various deformation on this basis, all belong in the protection range of the present invention.
Claims (10)
1. electric heating tube; electrical connection is drawn rod (11), thermel protection device (10), heating wire (4), is drawn rod (11) according to this in this heat-generating pipe outer tube (1), it is characterized in that: be provided with Heat Conduction Material (9) between described thermel protection device (10) and heat-generating pipe outer tube (1) inwall.
2. electric heating tube according to claim 1 is characterized in that: described Heat Conduction Material (9) is a heat conductive silica gel.
3. electric heating tube according to claim 1 is characterized in that: described connection is drawn between rod (11) and heat-generating pipe outer tube (1) inwall and is provided with electrical insulating material (8).
4. according to claim 1 or 2 or 3 described electric heating tubes, it is characterized in that: described electrical insulating material (8) is an electric insulation silica gel.
5. according to claim 1 or 2 or 3 described electric heating tubes, it is characterized in that: described thermel protection device (10) is a thermal cut-off.
6. according to claim 1 or 2 or 3 described electric heating tubes, it is characterized in that: described thermel protection device (10) is a temperature switch.
7. according to claim 1 or 2 or 3 described electric heating tubes, it is characterized in that: described thermel protection device (10) is connected with temperature switch for thermal cut-off.
8. a kind of electric heating tube according to claim 7 is characterized in that: described temperature switch is near heating wire (4).
9. electric heating tube according to claim 1 is characterized in that: be provided with thermostable heat-conductive filler (2) between described heating wire (4) and heat-generating pipe outer tube (1) inwall.
10. electric heating tube according to claim 9 is characterized in that: described heat-conducting filler (2) is a magnesium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200515784U CN201369843Y (en) | 2009-02-24 | 2009-02-24 | Electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200515784U CN201369843Y (en) | 2009-02-24 | 2009-02-24 | Electric heating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369843Y true CN201369843Y (en) | 2009-12-23 |
Family
ID=41488730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200515784U Expired - Fee Related CN201369843Y (en) | 2009-02-24 | 2009-02-24 | Electric heating tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201369843Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685936A (en) * | 2012-06-04 | 2012-09-19 | 句容市博远电子有限公司 | Self-temperature-controlling heater |
| CN103327661A (en) * | 2013-05-31 | 2013-09-25 | 镇江天信电器有限公司 | Stainless steel electrical heating tube |
-
2009
- 2009-02-24 CN CNU2009200515784U patent/CN201369843Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102685936A (en) * | 2012-06-04 | 2012-09-19 | 句容市博远电子有限公司 | Self-temperature-controlling heater |
| CN103327661A (en) * | 2013-05-31 | 2013-09-25 | 镇江天信电器有限公司 | Stainless steel electrical heating tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: He Shiwei Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20150224 |
|
| EXPY | Termination of patent right or utility model |