CN202818641U - Electric heating device - Google Patents
Electric heating device Download PDFInfo
- Publication number
- CN202818641U CN202818641U CN201220487714.6U CN201220487714U CN202818641U CN 202818641 U CN202818641 U CN 202818641U CN 201220487714 U CN201220487714 U CN 201220487714U CN 202818641 U CN202818641 U CN 202818641U
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- China
- Prior art keywords
- wire
- heating
- glass fiber
- heating panel
- heater
- 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 - Lifetime
Links
- 238000005485 electric heating Methods 0.000 title abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 107
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 30
- 239000003365 glass fiber Substances 0.000 claims abstract description 29
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 29
- 230000004888 barrier function Effects 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 17
- 229920002379 silicone rubber Polymers 0.000 claims description 14
- 239000004945 silicone rubber Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract 2
- 238000002788 crimping Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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- Surface Heating Bodies (AREA)
Abstract
The utility model provides an electric heating device which includes a first heat radiation plate, a heating line, and a polyvinyl chloride (PVC) insulating layer. The heating line includes a glass fiber wire, electric heating wires, and metal wires. The metal wires are wound on a first part of a first end of the glass fiber wire and a second part of a second end of the glass fiber wire. The electric heating wires are wound on the rest part of the glass fiber wire instead of the first part and the second part of the glass fiber wire and the metal wires which are wound on the first part and the second part of the glass fiber wire. The heating line is coated by the PVC insulating layer, and then is pasted on a first surface of a first heat radiation plate. In an embodiment, the metal wires short circuit the electric heating wires on the two ends of the heating wire to form non-heating sections, so the connection between a heating section and the non-heating sections of the electrical heating device can be realized without the help of crimping terminals, and the safety problem caused by the big contact resistance on a lead connecting part is solved.
Description
Technical field
The utility model relates to Field of Heat-treatment, relates in particular a kind of electric heater unit.
Background technology
Electric heater unit be a kind of can be the firing equipment of heat energy with electric energy conversion, the plurality of advantages such as high with its efficiency of heating surface, speed is fast, low-loss and energy-saving are widely used in the fields such as production, scientific research and test.For example, it can be applied in the refrigerator, the ice making machine pf refrigerator feed pipe is because the bad or low hydraulic pressure of feed-water valve may cause feed pipe to freeze, and normally water outlet ice making and cooling air duct temperature are excessively low, condensation vapor causes frost to stop up the air channel, therefore can be on the feed pipe surface and inside, air channel paste heater, antifreeze to be used for heating up.
The usually hot pressing heater wire formation on the individual layer aluminum foil plate of existing electric heater unit.Wherein, electric heater unit mainly comprises aluminum foil plate, the heater wire with glue-line and is coated on the outer PVC insulating barrier of heater wire, and heater wire is formed by the heating wire coiling, and two ends connect respectively wire.To link to each other by crimp type terminal at connecting position of wires.The crimp type terminal place by the heat-shrink tube pyrocondensation after waterproof insulation.Existing this device is owing to adopt crimp type terminal, meeting is so that the contact resistance of the heating wire of junction is excessive, when producing scattering that greatly heat again can not be very fast, can cause variable color even the fusing of heating wire, and cause PVC insulating material and the burning of amassing the flammable dust that falls, there is potential safety hazard.
The utility model content
In view of this, the utility model provides a kind of heater, causes the excessive and safety problem that produces of connecting position of wires contact resistance in order to solve to use crimp type terminal.
For achieving the above object, the utility model provides following technical scheme:
A kind of electric heater unit comprises the first heating panel, heater wire and polyvinylchloride insulating barrier; Described heater wire comprises glass fiber, heating wire and wire, wherein,
Described wire is wound on respectively the first of described glass fiber first end and the second portion of the second end;
Described heating wire is wound on other parts that described glass fiber does not comprise described first and described second portion, and at first and the second portion of described glass fiber, is wound on the described wire;
Described heater wire is outer by after the described PVC insulating barrier coating, and one side is affixed on described the first heating panel first surface.
Preferably, described heater wire also comprises the polyester drawn yarns that is wrapped in outside the described heating wire.
Preferably, also comprise silicone rubber insulation layer, described silicone rubber insulation layer is coated on the described heater wire, and described PVC insulating barrier specifically is coated on outside the described silicone rubber insulation layer.
Preferably, the second surface of described the first heating panel has glue-line.
Preferably, the second surface of described the first heating panel is adhesive with insulating and heat-conducting plastics paper outward, and the another side of described insulating and heat-conducting plastics paper has glue-line.
Preferably, also comprise the second heating panel, described the second heating panel is fitted in the first surface of described the first heating panel, covers the heater wire of described coating PVC insulating barrier.
Preferably, described the first heating panel and described the second heating panel are aluminum foil plate.
Preferably, described wire is used for linking to each other with extraneous power supply, and during energising, coiling first wiry and second portion do not generate heat in the heater wire.
Preferably, described wire is copper wire.
Via above-mentioned technical scheme as can be known, compared with prior art, the utility model provides a kind of electric heater unit, twine respectively wire by the heating wire inside at the heater wire two ends, heating wire short circuit with the heater wire two ends, form the not section of heating, the heating wire remainder is the heating section, even if therefore the heating wire resistance of this section is large again, do not have the electric current generation heat of flowing through yet, because the heating section of electric heater unit and the section of heating of not being connected do not need the crimp type terminal connection, are integrated, solved the safety problem that the employing crimp type terminal causes so that the contact resistance of the heating wire of junction is excessive.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the structural representation of a kind of electric heater unit of the utility model;
Fig. 2 is the partial structurtes schematic diagram of a kind of electric heater unit of the utility model;
Fig. 3 is the structural representation of the heater wire of a kind of electric heater unit of the utility model;
Fig. 4 is the equivalent schematic diagram of the heater wire of a kind of electric heater unit of the utility model;
Fig. 5 is the cutaway view of a kind of electric heater unit of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of electric heater unit, by in the heating wire at heater wire two ends, twining respectively wire, the heating wire short circuit at heater wire two ends is become the not section of heating of similar wire, and at the outside PVC insulating barrier that coats of heater wire, so that electric heater unit cold-hot integrated moulding, because the heating section of electric heater unit and the section of heating of not being connected do not need the crimp type terminal connection, solved the safety problem that the use crimp type terminal causes so that the connecting position of wires contact resistance is excessive.
Referring to Fig. 1, show the structural representation of an embodiment of a kind of electric heater unit of the utility model.Fig. 2 is the local structural graph of an embodiment of described electric heater unit.
In conjunction with Fig. 1 and Fig. 2, described electric heater unit can comprise the first heating panel 1, heater wire 2 and PVC insulating barrier 3.Described PVC insulating barrier 3 is coated on outside the described heater wire 2, and covers described heater wire 2 fully.The PVC insulating barrier wraps up heater wire fully, touches Shi Buhui at staff and causes potential safety hazard.
The heater wire 2 of described coating PVC insulating barrier is affixed on the first surface of the first heating panel 1.The heater wire that coats the PVC insulating barrier can adopt the mode of hot pressing to be fixed in the first surface of the first heating panel 1.
In order to increase the effective length of heater strip, described heater strip specifically can be affixed on the first surface of the first heating panel again through after the given shape bending, and Fig. 1 is a kind of bending shape, and the utility model embodiment is not limited to this a kind of bending shape certainly.
Wherein, referring to Fig. 3, show the structural representation of the heater wire of an embodiment of a kind of electric heater unit of the utility model.In conjunction with Fig. 1 and Fig. 3, described heater wire can comprise glass fiber 5, heating wire 6 and wire 7, described wire 7 is wrapped in the first of first end of described glass fiber 5 and the second portion of the second end, be the two ends of described glass fiber 5, described first and second portion refer to respectively to have in the described glass fiber two ends one section of certain-length.
Described heating wire 6 is wrapped in other parts that described glass fiber 5 does not comprise described first and described second portion, and at first and the second portion of described glass fiber 5, is wound on the described wire 7.
Wherein, for the resistance that guarantees heating wire is enough large, described heating wire can be wrapped on the described glass fiber closely, thus so that heat production better effects if.But, in order to prevent the damage of heating wire, the tension that heating wire can not twine.
In actual applications, during described heater strip energising, wire and heating wire have electric current to pass through, because first and the second portion of glass fiber are wound with wire and heating wire, the resistance of heating wire is larger, electric current mainly flows through from wire, thereby so that the heating wire short circuit at first and second portion place, its equivalent schematic diagram can be referring to Fig. 4.Among Fig. 4, be wrapped in the outer heating wire of wire and be considered as the first heating wire 12, the heating wire that directly is wrapped on the glass fiber is considered as the second heating wire 13, when energising, wire is with 12 short circuits of the first heating wire, the resistance of the first heating wire 12 is equivalent to 0, Gu do not generate heat, also namely forms the not section of sending out 302 of described heater strip; And the second heating wire 13 is connected with wire, Gu generate heat, forms the heating section 301 of described heater strip.
Wherein, described wire is wrapped in first on the described glass fiber and the length of second portion is not specifically limited, and can determine that wire is wrapped in the length on the glass fiber according to the difference of actual operating position.
The material of described heating wire can be the nickel chromium triangle material.
In the present embodiment, wire is wrapped in the first of first end of glass fiber and the second portion of the second end, and with heating wire winding on whole glass fiber, so that heater wire is divided into the heating section of twining the not section of heating wiry and only twine heating wire on glass fiber in the heating wire at glass fiber two ends, and coat heater wire fully with the PVC insulating barrier, be affixed on the first surface of the first heating panel, formed the electric heater unit of cold-hot integrated moulding, because the heating section of electric heater unit the and section of heating is not one-body molded, do not need crimp type terminal to connect, solved the safety problem of using crimp type terminal to cause so that the contact resistance of the heating wire of junction is excessive.
Wherein, behind described heater wire outer cladding PVC insulating barrier, heating section can not obviously be distinguished with the section of heating not, in order to prevent that deviation occurs when the later stage heating wire is finalized the design, so that the electric heating district that should generate heat or not, should the hot zone situation of heating occur, very important with the judgement of the separation of unwired heating section to using the not section of heating wiry, the method of judging can be utilized electromagnetic induction principle, nondestructively judge cold and hot section separation by the variation of measuring the eddy current of inducting in the tested workpiece, this determination methods can be called EDDY CURRENT.By signal processing apparatus, will run into the signal of separation to labelling apparatus, do mark at the heater wire upper surface, become cold and hot separation mark 303.
Wherein, for fixing described heating wire 6, described heating wire twines polyester drawn yarns 7 outward.
Need to prove, can also select that other are heat-resisting, the fixing heating wire of the material of insulation, do not affect heating wire work and get final product.
Wherein, described wire can be selected the little copper wire of electrical conductivity, can certainly adopt other metal material.
Referring to Fig. 5, the cutaway view of another embodiment of a kind of electric heater unit of the utility model is shown.Be that with above-described embodiment difference described electric heater unit also comprises silicone rubber insulation layer 8, described silicone rubber insulation layer 8 is coated on the described heater wire 2, and described PVC insulating barrier 3 specifically is coated on outside the described silicone rubber insulation layer 8.
Wherein, require silicone rubber insulation layer to be coated on the heater wire, coat again the PVC insulating barrier after the moulding cooling, because the silicon rubber heater wire smooth surface, aluminum foil and adhesive tape is very little to its bonding force, the PUR that can not directly do with aluminium foil adds heat bonding, so be that the PVC insulating barrier is outside at silicone rubber insulation layer, the heat resisting temperature of silicon rubber is 200 degree, the heat resisting temperature of PVC is 105 degree, can not have influence on silicone rubber insulation layer during the moulding of PVC insulating barrier, like this so that heater wire has the double insulation structure, and the surface is the PVC insulating barrier, can hot pressing be fixed on the heating panel.
In the present embodiment, the coated Si rubber insulation has better fail safe and insulating properties so that electric heater unit forms double hyer insulation, and has met the IEC of International Electrotechnical Commission standard and national standard can be touched the forceful electric power line to staff requirement.
Wherein, the second surface of described the first heating panel 1 has glue-line, and glue-line is adhesive with brown paper 11 described first surfaces outward and second surface is the opposed two sides of described the first heating panel.
In actual applications, when using electric heater unit, the brown paper that glue-line is outer tears off, the second surface of the first heating panel of electric heater unit is pasted the body surface that heats at needs.
Wherein, not damaged in order to guarantee the PVC insulating barrier, can stick the second heating panel 9 at the another side of the heater wire that coats the PVC insulating barrier, also be that the heater wire of described coating PVC insulating barrier is between the first heating panel 1 and the second heating panel 9.
Wherein, for the heat that can make electric heater unit is spread better, heating panel can be selected the aluminum foil plate of good heat dissipation effect, but need to prove, can also select the heating panel of other materials.
As another embodiment, the second surface of described the first heating panel is pasted first one deck insulating and heat-conducting plastics paper 10 outward, and the another side of insulating and heat-conducting plastics paper 10 has glue-line, and described brown paper 11 is specifically pasted on the glue-line of described insulating and heat-conducting plastics paper 10.。
In the present embodiment; when using electric heater unit; tear brown paper off; the insulating and heat-conducting plastics paper of electric heater unit is sticked in the body surface that needs heating; paste at body surface saferly than the heating panel that directly will have glue-line, when the heater wire insulating barrier damages, the protection of insulating and heat-conducting plastics paper is arranged; electric current can not be delivered on the body surface by aluminium foil, and staff touches Shi Buhui and causes Danger Electric shock risk.
Simultaneously, the electric heater unit of cold-hot integrated moulding has been avoided use heat-shrink tube pyrocondensation crimp type terminal, is conducive to the coiling of heater wire, and the PVC insulating barrier coats heater wire fully, has played the anti-creeping effect of waterproof.
Wherein, described wire or heater strip can directly link to each other with extraneous power supply, so that the heater strip energising.During energising because electrical conductivity wiry is little, with the contact resistance of power supply junction can be not excessive, the safety problem that causes so can not exist the junction to produce amount of heat.
Electric heater unit provided by the utility model goes for the moist electrically-conducting metal surface such as water pipe or air channel.For example, can be applicable in the refrigerator, the ice making machine pf refrigerator feed pipe is because the bad or low hydraulic pressure of feed-water valve may cause feed pipe to freeze, and normally water outlet ice making and cooling air duct temperature are excessively low, condensation vapor causes frost to stop up the air channel, therefore can be on the feed pipe surface and inside, air channel paste electric heater unit, antifreeze to be used for heating up.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. an electric heater unit is characterized in that, comprises the first heating panel, heater wire and polyvinylchloride insulating barrier; Described heater wire comprises glass fiber, heating wire and wire, wherein,
Described wire is wound on respectively the first of described glass fiber first end and the second portion of the second end;
Described heating wire is wound on other parts that described glass fiber does not comprise described first and described second portion, and at first and the second portion of described glass fiber, is wound on the described wire;
Described heater wire is outer by after the described PVC insulating barrier coating, and one side is affixed on the first surface of described the first heating panel.
2. device according to claim 1 is characterized in that, described heater wire also comprises the polyester drawn yarns that is wrapped in outside the described heating wire.
3. device according to claim 1 is characterized in that, also comprises silicone rubber insulation layer, and described silicone rubber insulation layer is coated on the described heater wire, and described PVC insulating barrier specifically is coated on outside the described silicone rubber insulation layer.
4. device according to claim 1 is characterized in that, the second surface of described the first heating panel has glue-line.
5. device according to claim 1 is characterized in that, the second surface of described the first heating panel is adhesive with insulating and heat-conducting plastics paper outward, and the another side of described insulating and heat-conducting plastics paper has glue-line.
6. device according to claim 1 is characterized in that, also comprises the second heating panel, and described the second heating panel is fitted in the first surface of described the first heating panel, covers the heater wire of described coating PVC insulating barrier.
7. device according to claim 6 is characterized in that, described the first heating panel and described the second heating panel are aluminum foil plate.
8. device according to claim 1 is characterized in that, described wire is used for linking to each other with extraneous power supply, and during energising, coiling first wiry and second portion do not generate heat in the heater wire.
9. device according to claim 1 is characterized in that, described wire is copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220487714.6U CN202818641U (en) | 2012-09-21 | 2012-09-21 | Electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220487714.6U CN202818641U (en) | 2012-09-21 | 2012-09-21 | Electric heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818641U true CN202818641U (en) | 2013-03-20 |
Family
ID=47877439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220487714.6U Expired - Lifetime CN202818641U (en) | 2012-09-21 | 2012-09-21 | Electric heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818641U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471322A (en) * | 2013-08-30 | 2013-12-25 | 安徽省宁国天成电工有限公司 | Heater |
| CN103471321A (en) * | 2013-08-30 | 2013-12-25 | 安徽省宁国天成电工有限公司 | Aluminium foil heater |
| CN111343733A (en) * | 2020-04-09 | 2020-06-26 | 中山市优润达电线有限公司 | Heating wire body |
| CN112839396A (en) * | 2020-12-07 | 2021-05-25 | 宁波志辰科技有限公司 | A segmented heating wire and its manufacturing method and heating element |
-
2012
- 2012-09-21 CN CN201220487714.6U patent/CN202818641U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471322A (en) * | 2013-08-30 | 2013-12-25 | 安徽省宁国天成电工有限公司 | Heater |
| CN103471321A (en) * | 2013-08-30 | 2013-12-25 | 安徽省宁国天成电工有限公司 | Aluminium foil heater |
| CN111343733A (en) * | 2020-04-09 | 2020-06-26 | 中山市优润达电线有限公司 | Heating wire body |
| CN112839396A (en) * | 2020-12-07 | 2021-05-25 | 宁波志辰科技有限公司 | A segmented heating wire and its manufacturing method and heating element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |