CN202288596U - Hand warmer with built-in double-layer electric hotline - Google Patents
Hand warmer with built-in double-layer electric hotline Download PDFInfo
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- CN202288596U CN202288596U CN2011203919950U CN201120391995U CN202288596U CN 202288596 U CN202288596 U CN 202288596U CN 2011203919950 U CN2011203919950 U CN 2011203919950U CN 201120391995 U CN201120391995 U CN 201120391995U CN 202288596 U CN202288596 U CN 202288596U
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Abstract
The utility model discloses a hand warmer with a built-in double-layer electric hotline, which comprises a bag body and an electric control device, wherein a bag cavity is arranged in the bag body, a double-layer electric hotline is arranged in the bag cavity, the double-layer electric hotline respectively comprises an inner layer liner temperature sensitive layer (or a liner resistance wire), an inner insulating layer, an outer layer spiral resistance wire (or a corresponding spiral temperature sensitive layer) and an outer insulating layer from the innermost layer to the outermost layer, and the double-layer electric hotline is electrically connected with the electric control device. The innermost layer of the hand warmer with the built-in double-layer electric hotline does not need to use a core shaft (which is used as a winding carrier) by arranging the inner layer liner temperature sensitive layer or the liner resistance wire, thereby being capable of omitting a layer of materials, saving cost, also being capable of exempting process difficulty caused by an inner layer (a temperature sensitive line/resistance wire) which needs to be winded on the surface of the core shaft in a spiral shape. The innermost layer uses a liner temperature sensitive layer (or the liner resistance wire), and the strength of the hand warmer with the built-in double-layer electric hotline is higher than the spiral shape under the situation that the unit outer diameters are the same, thereby being capable of overcoming the defects that spiral winding is easy to be broken off, the inner insulating layer is not easy to be taken off because of exerting and the inner layer temperature sensitive layer (or the inner layer resistance wire) is easy to be sheared off, and being greatly convenient for installation process.
Description
Technical field
This utility model relates to the hand warmer technical field, especially a kind of hand warmer of built-in double-deck heating wire.
Background technology
China's utility model patent number: ZL200320120843.2 discloses a kind of " soft electric warm water bag ", its Granted publication number: CN2665572Y, and Granted publication day: on December 22nd, 2004; The electric warm water bag of this structure comprises a bag body, socket cover, seal receptacle, heating wire and liquid injection hole, also is provided with the high-resistance heating wire of low temperature that power density is not more than 50 watts/meter in the said bag body, and this heating wire is agglomerating or overlap agglomerating.The electric warm water bag of said structure, through heating wire to the intravital liquid heat of bag.But; There is following weak point in the electric warm water bag of said structure: the electric warm water bag of (1), this structure; Adopted common heating wire as electrical heating elements, this heating wire is agglomerating or overlap agglomeratingly with irregular form, and directly is placed on the bag inner chamber to liquid heat; Because bag is a flexible instrument, the flexural strength of heating wire is very low, and the easy deformation of its pressurized influences the heats of bag, even causes damage; Moreover the heating wire that is wound in bulk also causes easily and gets loose; (2), used the electric warming bag of this heating wire, do not reach the purpose of temperature control completely; (3), heating wire twines the big position of density and is heated higherly in the bag, heating wire twines the little position of density and is heated lowlyer, and it is unbalanced to cause bag integral body to be heated; (4), to heating wire be twined agglomerating or is overlapped to form bulk, its troublesome poeration.
For solving above-mentioned deficiency; Chinese patent number: 200720057333.3, disclose name and be called " a kind of electric warming bag of built-in Double helix heating wire " utility model patent, its Granted publication day: on JIUYUE 10th, 2008; It comprises the bag with bag chamber; Bag is provided with electric control gear, and said bag intracavity is equiped with the Double helix heating wire, and the Double helix heating wire is electrically connected with electric control gear.The Double helix heating wire is set as electrical heating elements in bag, its flexural strength is very high, is difficult for pressurized deformation; Moreover the Double helix heating wire can be realized the bag effect of temperature control completely, helps its integral body and receives thermal balance; Said Double helix heating wire comprises mandrel, internal layer PTC spiral resistance wire, NTC heat-sensitive layer, outer spiral resistance wire and external insulation layer respectively by innermost layer to outermost layer.The Double helix heating wire of this structure, its mandrel play fixedly internal layer PTC spiral resistance wire effect; Internal layer PTC spiral resistance wire has ptc characteristics, that is: PTC positive temperature coefficient, and high more its resistivity of temperature is big more, can export temperature variant signal in real time; The NTC heat-sensitive layer has the NTC characteristic, that is: NTC negative temperature coefficient, and high more its resistivity of temperature is more little, can export temperature variant signal in real time equally; It is heating function that outer spiral resistance wire mainly acts on; And external insulation layer mainly is the electric insulation effect.
Yet still there is following weak point in the electric warming bag of above-mentioned built-in Double helix heating wire: (1) is helical form in view of internal layer PTC spiral resistance wire; Therefore, must mandrel be set, supply it to twine with (making carrier) and use at innermost layer; Like this; Both increase cost, because of internal layer PTC spiral resistance wire needs to twine, caused the certain process difficulty again; Especially be internal layer PTC spiral resistance wire, its external diameter is less, so intensity is lower, and is often excessive because of firmly in winding process, and causes internal layer PTC spiral resistance wire to fracture; (2) heating wire of this inside and outside double-layer spiral resistance wire is connected with external power source for making internal layer PTC spiral resistance wire, and is excessive because of firmly easily in the time of sloughing its corresponding NTC heat-sensitive layer (inner insulating layer), and cuts off internal layer PTC spiral resistance wire.
The utility model content
The purpose of this utility model is to solve the deficiency of above-mentioned prior art, and provides a kind of simple and reasonable for structure, when can guarantee that temperature is accurately controlled; Reduce technology difficulty greatly; Reduce cost, simultaneously, in the time of can preventing to slough inner insulating layer; Cause is firmly excessive, and cuts off the insufficient hand warmer of internal layer.
The purpose of this utility model is to realize like this.
A kind of hand warmer of built-in double-deck heating wire; Comprise bag and electric control gear; The marsupial chamber is set in the bag, it is characterized in that, said bag intracavity is provided with double-deck heating wire; Double-deck heating wire comprises the linear temperature-sensitive layer of internal layer, inner insulating layer, outer spiral resistance wire and external insulation layer respectively by innermost layer to outermost layer, and said double-deck heating wire and electric control gear electrically connect; This kind of hand warmer is through being provided with the linear temperature-sensitive layer of internal layer, therefore; Its innermost layer need not to use mandrel (as twining carrier); Both can save layer of material, save cost, can exempt internal layer (temp.-sensing wire) again needs helical form to be wrapped in mandrel surface, the difficulty in process that is caused; And innermost layer uses linear temperature-sensitive layer, under the identical situation of unit external diameter; Its strength ratio is spiral helicine wants high, both can exempt spiral and twine the deficiency that fractures easily, is not easy again because of firmly taking off inner insulation layer; And the deficiency of cutting off internal layer temperature-sensitive layer easily greatly facilitates installation technology.
As scheme more specifically, said outer spiral resistance wire system is wrapped in the inner insulating layer outer surface with spiral form, to cooperate all fronts temperature-sensitive control of the external helical layer resistance wire of the linear temperature-sensitive layer of internal layer.
Said inner insulating layer can be the insulating heat-conductive book layer that Teflon or elastomeric material are processed; Adopt the Teflon material; Both played the good insulation performance effect, when letting shears need take off the part inner insulating layer again, because its material behavior; Be very easy to slough, in order to avoid cut off the deficiency of the linear temperature-sensitive layer of internal layer easily because of this inner insulating layer material is too tough.
As scheme more specifically, the flexible temp.-sensing wire or the flexible temperature-sensitive silk of the linear temperature-sensitive series of strata of said internal layer straight line type, its length is extended with outer spiral resistance wire suitable, so that the external all fronts temperature-sensitive of helical layer resistance wire.
The insulating heat-conductive book layer that said external insulation series of strata silica gel material is processed.
This reality is novel can also to adopt following technical measures to solve.
A kind of hand warmer of built-in double-deck heating wire; Comprise bag and electric control gear; The marsupial chamber is set in the bag, it is characterized in that, said bag intracavity is provided with double-deck heating wire; Double-deck heating wire comprises internal layer linear resistance silk, inner insulating layer, outer helical layer temperature-sensitive layer and external insulation layer respectively by innermost layer to outermost layer, and said double-deck heating wire and electric control gear electrically connect; The hand warmer of this scheme is through being provided with internal layer linear resistance silk, therefore; Its innermost layer need not to use mandrel (as twining carrier); Both can save layer of material, save cost, can exempt internal layer (resistance wire) again needs helical form to be wrapped in mandrel surface, the difficulty in process that is caused; And; Innermost layer uses the linear resistance silk, and under the identical situation of unit external diameter, its strength ratio is spiral helicine wants high; Both can exempt spiral and twine the deficiency that fractures easily; Be not easy again because of firmly taking off inner insulation layer, and the deficiency of cutting off internal layer linear resistance silk easily greatly facilitates installation technology.
Said outer helical layer temperature-sensitive series of strata are wrapped in the temp.-sensing wire or the temperature-sensitive silk of inner insulating layer outer surface with spiral form; To let internal layer linear resistance silk do temperature-sensitive control completely by outer helical layer temperature-sensitive layer.
Said inner insulating layer is the insulating heat-conductive book layer that Teflon or elastomeric material are processed; The material behavior system of Teflon is cut easily, is taken off.
Said internal layer linear resistance silk can be the metal flexible silk of straight line type, is wrapped by inner insulating layer.
The insulating heat-conductive book layer that said external insulation series of strata silica gel material is processed.
Can also be provided with controllable silicon or comparator on the said bag, controllable silicon or comparator can electrically connect with (spiral or linearity) resistance wire, (linearity or spiral) temperature-sensitive layer, utilize the sensing characteristics of temperature-sensitive layer, are equipped with electronic control circuit; With the controllable silicon is example; Along with temperature change in the bag; Bilayer heating wire control thyristor operating angle size, and then automatic feedback control heating wire size of current are because double-deck heating wire all has sensing characteristics (the temperature-sensitive layer is to resistance wire all fronts temperature-sensitive) in the road completely; Therefore, reach the effect of circuit temperature-controlling completely.
The beneficial effect of this utility model is.
(1), this kind of hand warmer, adopt double-deck heating wire as electric heater, the structure of this bilayer heating wire by innermost layer to outermost layer is respectively: the linear temperature-sensitive layer of internal layer, inner insulating layer, outer spiral resistance wire and external insulation layer; Or internal layer linear resistance silk, inner insulating layer, outer helical layer temperature-sensitive layer and external insulation layer; Wherein, temperature-sensitive layer and resistance wire and outside electric control gear electrically connect, and utilize resistance wire heating, temperature-sensitive layer to resistance wire temperature-sensitive control completely, realize the effect of accurate temperature controlling completely.
(2) have again; Because sexy temperature layer of internal layer anchor line (string) or linear resistance silk; Therefore, its innermost layer need not to use mandrel (as twining carrier), both can save layer of material, save cost; Can exempt internal layer temperature-sensitive layer or internal layer resistance wire again needs helical form to be wrapped in mandrel surface, the difficulty in process that is caused; And; Innermost layer uses linear resistance silk or linear temperature-sensitive layer, and under the identical situation of unit external diameter, its strength ratio is spiral helicine bigger; Both can exempt spiral and twine the deficiency that fractures easily; Be not easy again because of firmly taking off inner insulation layer, and the deficiency of cutting off internal layer resistance wire or internal layer temperature-sensitive layer easily greatly facilitates installation technology.
Description of drawings
Fig. 1 is the hand warmer structural representation of this utility model.
Fig. 2 is the double-deck heating wire sketch map of Fig. 1.
The specific embodiment
Embodiment one: as depicted in figs. 1 and 2; A kind of hand warmer of built-in double-deck heating wire comprises bag 1 and electric control gear, and marsupial chamber 2 is set in the bag 1; It is characterized in that; Said bag is provided with double-deck heating wire 3 in the chamber 2, and double-deck heating wire 3 comprises internal layer linear resistance silk 31, inner insulating layer 32, outer helical layer temperature-sensitive layer 33 and external insulation layer 34 respectively by innermost layer to outermost layer, and said double-deck heating wire 3 electrically connects with electric control gear.
Wherein, said outer helical layer temperature-sensitive layer 33 is to be wrapped in inner insulating layer 32 outer surfaces with spiral form; And the insulating heat-conductive book layer that inner insulating layer 32 is Teflon or elastomeric material to be processed.
Said internal layer linear resistance silk 31 is the metal flexible silk of straight line type; And the insulating heat-conductive book layer that external insulation layer 34 is a silica gel material to be processed.
Embodiment two: (accompanying drawing is not looked out); Its embodiment is close with the foregoing description one, and difference is merely: double-deck heating wire 3 comprises internal layer linearity temperature-sensitive layer 31, inner insulating layer 32, outer spiral resistance wire 33 and external insulation layer 34 respectively by innermost layer to outermost layer.That is: internal layer temperature-sensitive layer and outer resistance wire transposition, the double-deck heating wire 3 of this structure can be realized the purpose of this utility model equally, no longer narrates here.
Operation principle: double-deck electric heating linear system internal layer heating, outer temperature-sensitive (seeing embodiment one); Or internal layer temperature-sensitive, outer heating can (embodiment two), as long as when can realize the resistance wire heating, the temperature-sensitive layer can realize completely temperature accurately control get final product.
For further improving safeguard protection, can in circuit, set up protective tube, with the break-make of control entire circuit to the bag heating; Protective tube also can be to be electrically connected with electric heating body; Is example with double-deck heating wire as electric heating body, and electric heating body damages, and the liquid in the bag is charged, and at this moment, the protective tube open circuit protection is to realize the heated protective to bag.
In addition, the ZL 200720057333.3 that above-mentioned prior art is mentioned, name is called the utility model patent of " a kind of electric warming bag of built-in Double helix heating wire ", and its double spiral wounded resistance silk also can be internal layer heating, outer temperature-sensitive; Or internal layer temperature-sensitive, outer heating are all right.
Claims (10)
1. the hand warmer of built-in double-deck heating wire; Comprise bag (1) and electric control gear; Marsupial chamber (2) is set in the bag (1), it is characterized in that, be provided with double-deck heating wire (3) in the said bag chamber (2); Double-deck heating wire (3) comprises the linear temperature-sensitive layer (31) of internal layer, inner insulating layer (32), outer spiral resistance wire (33) and external insulation layer (34) respectively by innermost layer to outermost layer, and said double-deck heating wire (3) electrically connects with electric control gear.
2. according to the hand warmer of the said built-in double-deck heating wire of claim 1, it is characterized in that said outer spiral resistance wire (33) is to be wrapped in inner insulating layer (32) outer surface with spiral form.
3. according to the hand warmer of the said built-in double-deck heating wire of claim 1, it is characterized in that said inner insulating layer (32) is the insulating heat-conductive book layer that Teflon or elastomeric material are processed.
4. according to the hand warmer of the said built-in double-deck heating wire of claim 1, it is characterized in that the linear temperature-sensitive layer of said internal layer (31) is the flexible temp.-sensing wire or the flexible temperature-sensitive silk of straight line type.
5. according to the hand warmer of the said built-in double-deck heating wire of claim 1, it is characterized in that said external insulation layer (34) is the insulating heat-conductive book layer that silica gel material is processed.
6. the hand warmer of built-in double-deck heating wire; Comprise bag (1) and electric control gear; Marsupial chamber (2) is set in the bag (1), it is characterized in that, be provided with double-deck heating wire (3) in the said bag chamber (2); Double-deck heating wire (3) comprises internal layer linear resistance silk (31), inner insulating layer (32), outer helical layer temperature-sensitive layer (33) and external insulation layer (34) respectively by innermost layer to outermost layer, and said double-deck heating wire (3) electrically connects with electric control gear.
7. according to the hand warmer of the said built-in double-deck heating wire of claim 6, it is characterized in that said outer helical layer temperature-sensitive layer (33) is temp.-sensing wire or the temperature-sensitive silk that is wrapped in inner insulating layer (32) outer surface with spiral form.
8. according to the hand warmer of the said built-in double-deck heating wire of claim 6, it is characterized in that said inner insulating layer (32) is the insulating heat-conductive book layer that Teflon or elastomeric material are processed.
9. according to the hand warmer of the said built-in double-deck heating wire of claim 6, it is characterized in that said internal layer linear resistance silk (31) is the metal flexible silk of straight line type.
10. according to the hand warmer of the said built-in double-deck heating wire of claim 6, it is characterized in that said external insulation layer (34) is the insulating heat-conductive book layer that silica gel material is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203919950U CN202288596U (en) | 2011-10-16 | 2011-10-16 | Hand warmer with built-in double-layer electric hotline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203919950U CN202288596U (en) | 2011-10-16 | 2011-10-16 | Hand warmer with built-in double-layer electric hotline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202288596U true CN202288596U (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203919950U Expired - Fee Related CN202288596U (en) | 2011-10-16 | 2011-10-16 | Hand warmer with built-in double-layer electric hotline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202288596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898904A (en) * | 2014-10-21 | 2016-08-24 | 浙江新远虹高分子材料有限公司 | Carbon fiber heating line and electric blanket internally provided with same |
-
2011
- 2011-10-16 CN CN2011203919950U patent/CN202288596U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105898904A (en) * | 2014-10-21 | 2016-08-24 | 浙江新远虹高分子材料有限公司 | Carbon fiber heating line and electric blanket internally provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20151016 |
|
| EXPY | Termination of patent right or utility model |