CN214544827U - Horse's belly shape heating film - Google Patents

Abstract

The utility model provides a horse belly shape heating film, include horse belly shape substrate layer and locate first main way electrode, second main way electrode, a plurality of first branch electrode, a plurality of second branch electrode and heating film coating on the horse belly shape substrate layer, first main way electrode sets up in the one end on long base along long base side direction, second main way electrode sets up in the other end on long base along long base side direction, first main way electrode and second main way electrode all are used for supplying power for heating film coating, just first main way electrode and second main way electrode all are insulated with heating film coating electricity, heating film coating extends to short base department from long base department in order to form horse belly shape heating film coating. The overall shape of the horse-bellied heating film is horse-bellied, and the horse-bellied heating film can be used for laying horse-bellied or annular products, such as horse-bellied or annular dining tables, conference tables and the like, has no dead angle in laying and can uniformly heat.

Description

Horse's belly shape heating film

Technical Field

The utility model relates to a heating film technical field, concretely relates to horse belly shape heating film.

Background

At present, in order to ensure the heating uniformity of a heating film, a common graphene heating film on the market mostly adopts parallel electrode circuits to ensure that the resistivities of different positions between conductive areas between parallel electrodes are consistent. The shape of the heating film can be designed only by selecting a regular rectangle, and the common heating film can not be laid effectively for the heating device with the irregular shape commonly used in daily life, so that the application field of the heating film is greatly limited.

The development of the horse-bellied heating film can greatly widen the application field of the heating film, such as common horse-bellied conference tables and dining tables. However, in the field of printing of graphene heating films, how to design an electrode circuit to ensure that the resistance at each position is consistent so as to ensure the uniformity of the overall heating of the heating film is still a great problem. Taking a circular heating film as an example, in an actual electrifying process, current often passes through the shortest path close to the circle center, and the current is collected to a local area close to the circle center, so that the heating temperature of the central area of the circular heating film is much higher than that of the edge position, and the experience effect is seriously influenced. At present, the design scheme of an electrode circuit of the horse-bellied heating film is not particularly reasonable, the integral heating uniformity of the heating film is difficult to ensure, especially the large-area heating film has low electric heating safety of an electric heating product, and the service life of the product is also greatly reduced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a horse's belly shape heating film to solve the inhomogeneous that generates heat that current heating film exists, electric heat product electric heat security is low, short service life scheduling defect.

In a first aspect, the utility model provides a horse-belly shape heating film, include horse-belly shape substrate layer and locate first main way electrode, second main way electrode, a plurality of first branch electrode, a plurality of second branch electrode and heating film coating on the horse-belly shape substrate layer, the horse-belly shape substrate layer includes long base, short base and both sides limit, first main way electrode sets up in the one end of long base along long base direction, second main way electrode sets up in the other end of long base along long base direction, first main way electrode and second main way electrode all are used for supplying power for the heating film coating, and first main way electrode and second main way electrode all with heating film coating electric insulation, the heating film coating extends to short base from long base in order to form horse-belly shape heating film coating;

one end of the first branch electrode is electrically connected with the first main path electrode, the other end of the first branch electrode extends to the second main path electrode to form a U-shaped branch, and the first branch electrode is electrically insulated from the second main path electrode;

one end of the second branch electrode is electrically connected with the second main circuit electrode, the other end of the second branch electrode extends towards the first main circuit electrode to form a U-shaped branch, and the second branch electrode is electrically insulated from the first main circuit electrode;

the plurality of first branch electrodes and the plurality of second branch electrodes are arranged in a U shape and penetrate through the heating film coating so that the first branch electrodes and the second branch electrodes are electrically conducted with the heating film coating, the plurality of first branch electrodes and the plurality of second branch electrodes are alternately nested at equal intervals so that the width of the heating film coating between any two adjacent branch electrodes is equal, and the heating film coating between any two adjacent branch electrodes is only electrically conducted through the two adjacent branch electrodes.

The utility model discloses horse belly shape heating film includes horse belly shape substrate layer and locates first main way electrode, second main way electrode, a plurality of first branch road electrode, a plurality of second branch road electrode and heating film coating on the horse belly shape substrate layer. The first main circuit electrode and the second main circuit electrode are respectively used for being connected with the positive electrode and the negative electrode of a power supply so as to supply power to the integral horse-shaped heating film. The heating film coating is evenly laid on the horse-shaped base material layer, the first main path electrode and the second main path electrode are arranged on one side of the heating film coating, the first main path electrode is in electric conduction with the first branch electrodes, the second main path electrode is in electric conduction with the second branch electrodes, the first branch electrodes and the second branch electrodes are arranged in a U shape and penetrate through the heating film coating, therefore, the heating film coating is divided into the horse-shaped heating units by the first branch electrodes and the second branch electrodes, each horse-shaped heating unit is in electric conduction with two adjacent branch electrodes inside and outside the horse-shaped heating unit, the branch electrodes on the inner side of the horse-shaped heating unit are called as inner branch electrodes, and the branch electrodes on the outer side of the horse-shaped heating unit are called as outer branch electrodes. The plurality of first branch electrodes and the plurality of second branch electrodes are nested alternately at equal intervals, namely the plurality of first branch electrodes and the plurality of second branch electrodes are nested alternately to form a plurality of horse-shaped heating units, the width of each horse-shaped heating unit is the same, and the horse-shaped heating unit between any two adjacent branch electrodes can only conduct electricity through the two adjacent branch electrodes. Because a plurality of first branch electrodes are connected in parallel, a plurality of second branch electrodes are connected in parallel, the voltage between the inner branch electrode and the outer branch electrode of any horse-shaped heating unit is equal, and because the width of the horse-shaped heating unit is the same, and the length of the horse-shaped heating unit corresponds to the length of the inner branch electrode and the length of the outer branch electrode, the heating power of the horse-shaped heating unit is only related to the area size, the temperature of each position of the horse-shaped heating unit is relatively uniform, and the heat generation uniformity of the whole horse-shaped heating film is good. The overall shape of the horse-bellied heating film is horse-bellied, and the horse-bellied heating film can be used for laying horse-bellied or annular products, such as horse-bellied or annular dining tables, conference tables and the like, has no dead angle in laying and can uniformly heat.

Preferably, the heating film coating is shaped like a horse belly, the horse belly-shaped substrate layer and the heating film coating are symmetrical along the same symmetry axis A, and the first main path electrode and the second main path electrode are symmetrical to each other along the symmetry axis A;

the long bottom edge of the heating film coating is parallel to the first main circuit electrode. Therefore, the heating film coating and the bellied substrate layer are both shaped like a bellied shape, the heating film coating covers most of the inner area of the bellied substrate layer, and the heating area is almost completely covered. First major way electrode all locates the one side of heating film coating with the second major way circuit, and whole heating area is the axisymmetric shape for whole heating area can be symmetrical, and the heat production homogeneity promotes.

Preferably, among the plurality of first branch electrodes and the plurality of second branch electrodes, the branch electrode having one corner is a single-corner branch electrode;

in two adjacent single-corner branch electrodes, a U-shaped area formed by extending from the vertex of the inner single-corner branch electrode to the vertex of the outer single-corner branch electrode is a blank area, and the heating film coating of the blank area is removed or replaced by an insulating heat conduction layer. The single-angle branch electrode only has one corner, and when two adjacent single-angle branch electrodes form an electric circuit, the current corresponding to the vertex of the single-angle branch electrode at the inner side is obviously higher than that of other adjacent regions, so that the local heating at the vertex of the single-angle branch electrode at the inner side is serious, one single-angle branch electrode has potential safety hazards, and the whole uniform heating of the heating film coating is not facilitated. In the preferred embodiment, the U-shaped area is filled with a blank layer or an insulating heat conducting layer, so that the current and the thermal power at the peak of the inner single-angle branch electrode are greatly reduced, and the uniform heat generation of the whole heating film is conveniently maintained.

Preferably, among the plurality of first branch electrodes and the plurality of second branch electrodes, the branch electrode having double corners is a double-corner branch electrode;

the double-angle branch electrode is characterized in that the corners of the double-angle branch electrode are arranged to be double-arc structures, each double-arc structure comprises an inner arc and an outer arc, the starting points of the inner arcs and the stopping points of the outer arcs coincide, and heating film coatings are arranged between the inner arcs and the outer arcs at intervals. The corner of the double-corner branch electrode also has the phenomenon that the heating is obviously higher than that of other areas, and the heat generation quantity of the corner can be reduced by arranging the double-arc structure. The start and stop point coincidence of inner arc and outer arc and inner arc and outer arc wrap around partial heating film coating, and the electric current does not pass through this partial heating film coating, and this partial heating film coating is by "short circuit" promptly, and this partial heating film coating does not produce heat from this, realizes that horse-shaped heating film evenly generates heat.

Preferably, the heating film coating is a graphene heating coating. The graphene heating coating can radiate infrared rays in a normal direction rapidly by means of excellent electric conductivity, thermal conductivity and infrared ray normal emissivity of graphene, and has the functions of rapid heating and heat dissipation.

Preferably, the first main circuit electrode and the second main circuit electrode are both copper electrodes, the first branch circuit electrode and the second branch circuit electrode are both silver electrodes, and the first branch circuit electrode and the second branch circuit electrode are both silver electrodes prepared by screen printing. The copper electrode has better conductivity and ductility and can resist bending. The silver electrode is formed by silver paste printing, and has the functions of simple preparation process, good conductivity, corrosion resistance and the like.

Preferably, the width of the first main path electrode and the width of the second main path electrode are 10-12 mm, and the width of the first branch path electrode and the width of the second branch path electrode are 6-8 mm. The widths of the first main circuit electrode, the second main circuit electrode, the first branch circuit electrode and the second branch circuit electrode can meet the current-carrying requirement of the fan-shaped heating film, and the fan-shaped heating film is convenient to prepare and control cost.

Preferably, the radial length of the heating film coating between two adjacent branch electrodes is less than or equal to 20 mm. When the width of the heating film coating between two adjacent branch electrodes is less than or equal to 20 mm, the heating power of any point of the heating film coating is close and the temperature is the same by virtue of good conductivity and heat conductivity of the heating film coating. When the radial length of the heating film coating between the two adjacent branch electrodes is more than 20 mm, the heat generation power difference of any point of the heating film coating is increased, and the temperature difference is increased.

Preferably, the horse-bellied substrate layer is a PET film, a PI film or a PVC film. The PET film, the PI film or the PVC film have good flexibility, ink adhesion effect and electrical insulation, and can meet the flexibility, anti-stripping and electric leakage safety functions of the fan-shaped heating film.

Advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

In order to more clearly explain the contents of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of a horse belly-shaped heating film according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the bellyband heating film shown in fig. 1 after a coating of the heating film is hidden.

Detailed Description

The following description is of the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, a number of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also considered to be the protection scope of the present invention.

As shown in fig. 1, a horse-belly shaped heating film according to an embodiment of the present invention is provided. The horse-bellied heating film comprises a horse-bellied substrate layer 1, a first main path electrode 2, a second main path electrode 3, a plurality of first branch path electrodes 4, a plurality of second branch path electrodes 5 and a heating film coating 6, wherein the first main path electrode 2, the second main path electrode 3, the plurality of first branch path electrodes 4, the plurality of second branch path electrodes 5 and the heating film coating 6 are arranged on the horse-bellied substrate layer. The horse-belly shape substrate layer 1 includes long base (leftmost), short base (rightmost) and both sides limit (upper and lower both sides limit), and first main road electrode 2 sets up in the upper end on long base along long base direction, and second main road electrode 3 sets up in the lower extreme on long base along long base direction, and first main road electrode 2 and second main road electrode 3 all are used for being connected with the commercial power, and first main road electrode 2 and second main road electrode 3 all with heating film coating 6 electrical insulation. In the present embodiment, the heat generation film coat 6 extends from the long bottom edge to the short bottom edge to thereby form a horse-belly-shaped heat generation film coat. The first branch electrode 4 and the second branch electrode 5 are both arranged in a U shape, the upper end of the first branch electrode 4 (the U-shaped branch is arranged in an inverted U shape with an opening facing the left, the upper end of the first branch electrode 4 is one end of the U-shaped branch) is electrically connected with the first main path electrode 2, the lower end of the first branch electrode 4 (the lower end of the first branch electrode 4 is the other end of the U-shaped branch) extends towards the second main path electrode 3 to form the U-shaped branch, and the first branch electrode 4 is electrically insulated from the second main path electrode 3. The lower end of the second branch electrode 5 (the lower end of the second branch electrode 5 is one end of a U-shaped branch) is electrically connected to the second main electrode 3, the upper end of the second branch electrode 5 (the upper end of the second branch electrode 5 is the other end of the U-shaped branch) extends toward the first main electrode 2 to form a U-shaped branch, and the second branch electrode 5 is electrically insulated from the first main electrode 2. A plurality of first branch road electrodes 4 and a plurality of second branch road electrodes 5 all are the U-shaped setting and run through heating film coating 6, from this first branch road electrodes 4 and second branch road electrodes 5 all with heating film coating 6 electric conduction, a plurality of first branch road electrodes 4 are nested in turn with a plurality of impartial interval of second branch road electrodes 5, a plurality of first branch road electrodes 4 all form the U-shaped branch road of opening variation in size with a plurality of second branch road electrodes 5, from this through the U-shaped branch road of big open-ended cup joint little open-ended U-shaped branch road. The heating film coating 6 is divided into a plurality of horse-shaped heating units by a plurality of first branch electrodes 4 and a plurality of second branch electrodes 5, each horse-shaped heating unit is in the shape of the same U-shaped strip, the width of the horse-shaped heating unit between any two adjacent branch electrodes is equal, the whole width from one end of the U-shaped heating unit to the other end of the U-shaped heating unit is approximately equal, and the horse-shaped heating unit between any two adjacent branch electrodes can only conduct electricity through the two adjacent branch electrodes.

The utility model discloses horse belly shape heating film inserts external power source through first main way electrode 2 and second main way electrode 3, is connected with first main way electrode 2 electricity through a plurality of first branch road electrodes 4, is connected with second main way electrode 3 electricity through a plurality of second branch road electrodes 5, and a plurality of horse belly shape heating unit that marks off jointly through a plurality of first branch road electrodes 4 and a plurality of second branch road electrodes 5 from this and for the power supply of semioval heating unit. A plurality of first branch electrodes 4 electrically connected to the first main branch electrode 2 are connected in parallel with each other, and a plurality of second branch electrodes 5 connected in parallel with the second main branch electrode 3 are connected in parallel with each other, whereby the voltage between any adjacent first branch electrode 4 and second branch electrode 5 is constant, according to the formula: p = U²The heat generation power of the horse-bellied heating element (corresponding to the resistance) is determined only by the magnitude of the resistance value. Since the width of the horse-bellied heating unit is the same and the length of the horse-bellied heating unit corresponds to the length of the adjacent branch electrode, the temperature of each position of the horse-bellied heating unit is relatively uniform, and the heat generation uniformity of the whole horse-bellied heating film is good.

As a preferred embodiment, the horse belly shape heating film of the present invention includes six first branch electrodes 4 and five second branch electrodes 5, wherein the inner side (nested in the innermost side of the U-shape) and the outer side (nested in the outermost side of the U-shape) branch electrodes are the first branch electrodes 4, and the six first branch electrodes 4 and the five second branch electrodes 5 jointly divide 10 horse belly shape heating units. In other embodiments, the numbers of the first main circuit electrode 2, the second main circuit electrode 3, the plurality of first branch circuit electrodes 4, the plurality of second branch circuit electrodes 5, and the horse-bellied heating unit can be changed accordingly according to the requirement.

As a preferred embodiment, as shown in fig. 1, the heat generating film coat layer 6 is similarly provided in a horse-belly shape, the horse-belly shaped base layer 1 and the heat generating film coat layer 6 are symmetrical along the same axis of symmetry a, and both the first main path electrode 2 and the second main path electrode 3 are symmetrical with respect to the axis of symmetry a. The belly shape substrate layer 1 and the heating film coating 6 are both arranged to be symmetrical, so that symmetrical products can be conveniently paved, the products can be symmetrically heated, and the heat generation uniformity is better. The long bottom edge of the heating film coating 6 is parallel to the first main path electrode 2 and the second main path electrode 3, and the first main path electrode 2 and the second main path electrode 3 are both kept at a certain distance from the long bottom edge of the heating film coating 6. Thereby, the heat generating film coat 6 is electrically insulated from both the first main path electrode 2 and the second main path electrode 3. Both the horse-belly-shaped base material layer 1 and the heat generating film coat layer 6 are provided in a symmetrical horse-belly shape, whereby the heat generating film coat layer 6 covers most of the area of the horse-belly-shaped base material layer 1.

As shown in fig. 2, in the first branch electrodes 4 and the second branch electrodes 5 according to the embodiment of the present invention, only the first branch electrode 4 with the smallest opening and the second branch electrode 5 with the smallest opening have a corner, which are respectively referred to as a first single-angle branch electrode 41 and a second single-angle branch electrode 51, and the second single-angle branch electrode 51 is sleeved on the first single-angle branch electrode 41. The U-shaped region formed by extending from the right end apex of the first single-horn-arm electrode 41 to the U-shaped apex of the second single-horn-arm electrode 51 is a blank region 7. In the present embodiment, the heat generating film coating of the margin area 7 is removed or is not filled with the heat generating film coating at the previous stage. If blank 7 is filled with the heating film coating, the electric current of following blank 7 guide all can follow the right-hand member summit department process of first single angle branch road electrode 41, and the electric current that inevitably leads to the right-hand member summit department of first single angle branch road electrode 41 is very big, and the heating film coating near it also can generate heat extremely showing, is unfavorable for the whole even heat production of heating film coating, also leads to local high temperature risk very easily. In other embodiments, the blank region 7 may be further coated as an insulating and heat conducting layer, which can also avoid local high temperature and improve the overall uniformity of heat generation of the heat generating film.

As a preferred embodiment, as shown in fig. 1 and fig. 2, a central hole is provided at the opening of the first single-angle branch electrode 41, and the first main-path electrode 2 and the second main-path electrode 3 are both led out from the central hole for connecting to the mains supply.

In the present embodiment, as shown in fig. 2, the branch electrodes having double corners among the plurality of first branch electrodes and the plurality of second branch electrodes are referred to as double-angled branch electrodes (except for the first single-angled branch electrode 41 and the second single-angled branch electrode 51). The corners of the double-corner branch electrode are arranged into a double-arc structure, the double-arc structure comprises an inner arc 81 and an outer arc 82, the start point and the stop point of the inner arc 81 are coincided with each other, and a heating film coating is arranged between the inner arc 81 and the outer arc 82 at intervals. The double-corner branch electrode has the advantages that the phenomenon that the heating is obviously higher than the adjacent area also exists at the corners of the double-corner branch electrode, the heat production quantity at the corners can be reduced by arranging the double-arc structure, and the belly-shaped heating film can be uniformly heated. In other embodiments, an insulating and heat conducting layer may be disposed between the inner arcs 81 and the outer arcs 82, with the same effect.

As a preferred embodiment, the heat generating film coating 6 is a graphene heat generating coating. In other embodiments, the heat generating film coating 6 may also be other heat generating coatings, such as a carbon crystal fiber layer.

In a preferred embodiment, the first main electrode 2 and the second main electrode 3 are both copper electrodes, which have excellent conductivity and ductility and can be provided on the base material by an adhesive method. The first branch electrode 4 and the second branch electrode 5 are both silver electrodes, and the first branch electrode 4 and the second branch electrode 5 are both silver electrodes prepared by screen printing, so that the printing preparation is convenient and rapid.

In a preferred embodiment, the width of the first main path electrode 2 and the second main path electrode 3 is 10 to 12 mm, and the width of the first branch electrode 4 and the second branch electrode 5 is 6 to 8 mm.

In a preferred embodiment, the width of the heat generating film coat 6 between the two adjacent branch electrodes is 20 mm or less, that is, the width of the horse-bellied heat generating element is 20 mm or less.

In a preferred embodiment, the horse-belly shaped substrate layer is a PET film, a PI film or a PVC film.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (9)

1. A horse-bellied heating film is characterized by comprising a horse-bellied substrate layer, a first main circuit electrode, a second main circuit electrode, a plurality of first branch circuits, a plurality of second branch circuits and a heating film coating, wherein the first main circuit electrode, the second main circuit electrode, the plurality of first branch circuits, the plurality of second branch circuits and the heating film coating are arranged on the horse-bellied substrate layer;

one end of the first branch electrode is electrically connected with the first main path electrode, the other end of the first branch electrode extends to the second main path electrode to form a U-shaped branch, and the first branch electrode is electrically insulated from the second main path electrode;

one end of the second branch electrode is electrically connected with the second main circuit electrode, the other end of the second branch electrode extends towards the first main circuit electrode to form a U-shaped branch, and the second branch electrode is electrically insulated from the first main circuit electrode;

the plurality of first branch electrodes and the plurality of second branch electrodes are arranged in a U shape and penetrate through the heating film coating so that the first branch electrodes and the second branch electrodes are electrically conducted with the heating film coating, the plurality of first branch electrodes and the plurality of second branch electrodes are alternately nested at equal intervals so that the width of the heating film coating between any two adjacent branch electrodes is equal, and the heating film coating between any two adjacent branch electrodes is only electrically conducted through the two adjacent branch electrodes.

2. The horse-belly shaped heating film according to claim 1, wherein the heating film coating layer is in a horse-belly shape, the horse-belly shaped base material layer and the heating film coating layer are symmetrical along the same symmetry axis a, and the first main path electrode and the second main path electrode are symmetrical to each other along the symmetry axis a;

the long bottom edge of the heating film coating is parallel to the first main circuit electrode.

3. The horse-belly shaped heat generating film according to claim 2, wherein among the plurality of first branch electrodes and the plurality of second branch electrodes, the branch electrode having one corner is a single-angled branch electrode;

in two adjacent single-corner branch electrodes, a U-shaped area formed by extending from the vertex of the inner single-corner branch electrode to the vertex of the outer single-corner branch electrode is a blank area, and the heating film coating of the blank area is removed or replaced by an insulating heat conduction layer.

4. The horse-belly shaped heating film according to claim 3, wherein among the plurality of first branch electrodes and the plurality of second branch electrodes, the branch electrode having double corners is a double-angled branch electrode;

the double-angle branch electrode is characterized in that the corners of the double-angle branch electrode are arranged to be double-arc structures, each double-arc structure comprises an inner arc and an outer arc, the starting points of the inner arcs and the stopping points of the outer arcs coincide, and heating film coatings are arranged between the inner arcs and the outer arcs at intervals.

5. The bellyband heating film according to claim 1, wherein the heating film coating is a graphene heating coating.

6. The horse-belly shaped heating film according to claim 1, wherein the first main path electrode and the second main path electrode are both copper electrodes, the first branch path electrode and the second branch path electrode are both silver electrodes, and the first branch path electrode and the second branch path electrode are both silver electrodes prepared by screen printing.

7. The horse-belly shaped heating film according to claim 1, wherein the width of the first main path electrode and the second main path electrode is 10 to 12 mm, and the width of the first branch path electrode and the second branch path electrode is 6 to 8 mm.

8. The bellyband heating film according to claim 1, wherein a width of the heating film coating between two adjacent branch electrodes is 20 mm or less.

9. The belly-shaped heating film according to claim 1, wherein the belly-shaped substrate layer is a PET film, a PI film, or a PVC film.

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