KR102532921B1 - Heating mat - Google Patents

Abstract

The present invention relates to a heating mat, comprising: aluminum foil; a fiberglass sheet laminated on an aluminum foil; An adhesive layer laminated on the fiber glass sheet; A waterproof non-woven fabric sheet laminated on the adhesive layer; a heating wire interposed between the adhesive layer and the waterproof nonwoven fabric sheet to generate heat when power is applied; and a control unit controlling power supply to the heating wire.
In particular, according to the present invention, the heat generated from the heating wire can be evenly generated in the heating area by means of the lower plate-shaped body formed by joining the aluminum foil and the fiberglass sheet.

Description

Heating mat {Heating mat}

The present invention relates to a heating mat, and more particularly, to a heating mat with improved heating rate and heating uniformity.

In general, a heating mat provides a constant heating area by arranging heating wires made of a conductive material having an electrical resistance in a predetermined pattern on a plate body and applying power.

The heating mat provides heat to the ground to prevent freezing of the ground and freezing of surrounding trees in winter, for example, and may be embedded in the ground or installed on the ground in a plate-like structure, as in Patent Document 1.

Conventional heating mats inevitably consume relatively significant power to compensate for heat loss lost to the surroundings due to a hot valley phenomenon in which only the heating wire is locally heated. In addition, when the plate-shaped heating mat is disposed on the ground, durability issues such as waterproofing should be considered.

Republic of Korea Patent Publication No. 10-2013-0061882

The present invention was created to solve the above-mentioned problems, and due to the structural characteristics of the heating wire on a ship, a heating mat capable of using the entire heating mat facing the object to be heated as a heating area by overcoming the hot bone phenomenon in which only the heating wire is locally heated. intended to provide

In order to achieve the above object, a heating mat according to a preferred embodiment of the present invention includes an aluminum foil facing an object to be heated; a fiberglass sheet laminated on an aluminum foil; An adhesive layer laminated on the fiber glass sheet; A waterproof non-woven fabric sheet laminated on the adhesive layer; a heating wire interposed between the adhesive layer and the waterproof nonwoven fabric sheet to generate heat when power is applied; and a control unit controlling power supply to the heating wire. In particular, according to the present invention, the heat generated from the heating wire can be uniformly diffused and heated in the heating area by means of the lower plate-shaped body bonded with the aluminum foil and the fiberglass sheet.

In an embodiment of the present invention, the heating wire includes a core wire that generates heat by applying a current; A fiber heat wire layer wrapping around an outer circumferential surface of the core wire; and a coating layer disposed around an outer circumferential surface of the fiber heating layer.

Optionally, the fiber heat wire layer may be braided and disposed on the outer circumferential surface of the core wire.

The present invention is composed of a coating layer including PVC fiber powder and carbon fiber powder, and may be composed of PVC fiber powder in the range of 60 to 70 wt% and carbon fiber powder in the range of 30 to 40 wt%. Preferably, the coating layer may be composed of 70 wt% of PVC fiber powder and 30 wt% of carbon fiber powder.

A heating mat according to a preferred embodiment of the present invention may employ a fiberglass sheet impregnated with an adhesive.

Accordingly, in the present invention, the lower plate-like body may be formed by placing a fiberglass sheet impregnated with an adhesive on an aluminum foil and pressing it.

Optionally, in the present invention, one surface of the aluminum foil facing the object to be heated may be formed as wrinkles.

Features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to explain his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

According to the above description of the present invention, the present invention is provided so that the entire area of the heating mat can be used as a heating area for the heat generated from the onboard heating wire.

In particular, according to the present invention, an aluminum foil and a fiberglass sheet can be integrally bonded to a lower plate-like body so that the heating mat can be manufactured in a thin plate structure, and the lower plate-like body and the upper plate-like body composed of a non-woven fabric sheet can be easily joined by a bonding method. there is. As a result, it is possible to reduce the number of man-hours by simplifying the assembly step when manufacturing the heating mat and to produce a good product.

The present invention has reliable insulation and waterproof properties and can provide heat to an object to be heated under various environments.

In addition, the present invention can reduce the area occupied during storage by providing flexibility to easily fold the heating mat.

1 is a perspective view of a heating mat according to a preferred embodiment of the present invention.
FIG. 2 is a schematic configuration diagram of the heating mat shown in FIG. 1 .
3 is a partial cutaway view schematically showing a heating wire employed in a heating mat according to the present invention.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and examples taken in conjunction with the accompanying drawings. In adding reference numerals to components of each drawing in this specification, it should be noted that the same components have the same numbers as much as possible, even if they are displayed on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In this specification, terms such as first and second are used to distinguish one element from another element, and elements are not limited by the terms. In the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated, and the size of each component does not entirely reflect the actual size.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is configured to utilize the entire area of the heating mat as a heating area through heat generated by a linear heating unit (specifically, a heating wire) built into the plate-shaped body. For example, the present invention can be used for various purposes such as providing heat through heating of a heating wire to keep greenhouses and livestock sheds warm, prevent icing on golf course greens and roads, protect windshields at industrial sites, and dry painted surfaces of ships.

1 to 3, the heating mat according to a preferred embodiment of the present invention includes an aluminum foil 10, a fiber glass sheet 20, a heating wire 40, a waterproof nonwoven fabric sheet 50, and a heating wire ( 40) includes a control unit 60 that controls power supply. In addition, in the present invention, the adhesive layer 30 is interposed or coated between the fiberglass sheet 20 and the waterproof nonwoven fabric sheet 50 to flexibly bond the upper plate-like body and the lower plate-like body disposed adjacent to the adhesive layer.

Here, the lower plate-shaped body is a composite sheet corresponding to the lower base composed of the aluminum foil 10 and the fiberglass sheet 20, and has a size and shape capable of supporting and holding the heating wire and the waterproof nonwoven fabric sheet.

An aluminum foil 10 is placed on the bottom of the heating mat according to a preferred embodiment of the present invention. As shown, in the present invention, since the heating wire 40 is wired in a line according to a predetermined pattern between the inner region of the heating mat, specifically, between the lower plate-like body and the upper plate-shaped body, it is usually localized only around the heating wire. In order to compensate for the disadvantage of not uniformly heating the lower surface of the heating mat by being heated, an aluminum foil having thermal conductivity and heat preservation is provided facing the object to be heated. In other words, the present invention can ensure uniform heating of the entire heating mat through the aluminum foil 10 as a medium.

In addition, the aluminum foil 10 is formed in a film structure of a thin film having moisture impermeability, and thus can contribute to securing dimensional stability, lightening the weight of the heating mat, and flame retardancy.

Optionally, in the present invention, one surface of the aluminum foil 10 directly facing the object to be heated is wrinkled, or one surface of the aluminum foil is surface-treated or molded into a concave-convex shape, and then the bottom of the heating mat can also be placed in The wrinkled aluminum foil can increase the heating area, reduce the chance of contact with the fluid (water) flowing between the heating mat and the object to be heated, and induce smooth drainage of the fluid in the direction of the valley of the wrinkled aluminum foil. there is.

The fiberglass sheet 20 is stacked and arranged on the upper surface of the aluminum foil 10, and is a component that guarantees insulation, durability, and water repellency of the heating mat. In addition, the fiberglass sheet 20 has relatively high thermal conductivity and relatively excellent processability, so that the heating mat can be easily put into a storage bag in a folded state.

In addition, the fiberglass sheet 20 contracts around the outer surface of the heating wire 40 when exposed to flame, and has a property of blocking direct contact between the heating wire and the flame.

As described above, in the present invention, the aluminum foil 10 and the fiberglass sheet 20 are stacked and arranged in a composite sheet structure, preferably the aluminum foil and the fiberglass sheet are integrally bonded. The fiberglass sheet 20 is laminated on the aluminum foil 10 after having an adhesive absorbed therein. That is, the fiberglass sheet 20 impregnated with the adhesive may be bonded to the aluminum foil by placing it on the aluminum foil and pressing it. Preferably, the pressing process is implemented under a high temperature atmosphere of 80 ~ 120 ℃ aluminum foil.

The upper plate-shaped body is composed of a non-woven fabric sheet constituting the upper part of the heating mat with respect to the heating wire 20, preferably a waterproof non-woven fabric sheet 50. The waterproof nonwoven fabric sheet 50 is disposed as a heat insulating member so that the heat source from the heating wire 40 is not radiated upward when power is applied, and a function of preventing condensation or moisture absorption into the heating mat is added. For example, the waterproof non-woven fabric sheet may provide waterproofness by attaching a moisture-proof film on the non-woven fabric, and waterproof performance may be imparted to the non-woven fabric sheet in various ways without being limited thereto.

Preferably, the heating mat according to the present invention attaches the waterproof nonwoven fabric sheet 50 by stacking the adhesive layer 30 on the composite sheet composed of the aluminum foil 10 and the fiberglass sheet 20, the fiberglass sheet The position of the heating wire 40 may be fixed between (20) and the waterproof nonwoven fabric sheet (50).

The heating mat according to the present invention can supply power to the heating line 40 through the control unit 60 at a preset output voltage, for example, of 220V. As is well known to those skilled in the art, the control unit 60 is designed to maintain a preset temperature by sensing the ambient temperature of the heating wire 40 and turning on/off power supplied to the heating wire. In addition, a display (not shown) capable of displaying the amount of voltage supplied to the heating wire, the set temperature, the current heating temperature, etc. may be installed. In addition, the control unit 60 may be connected to a temperature sensor installed on the heating line to detect and/or control the above-mentioned functions. In order to help a clear understanding of the present invention, specific configuration details of the control unit are excluded from the detailed description of the present invention.

In addition, the present invention can be widely installed on the object to be heated by connecting a plurality of heating mats in a series-parallel manner.

As described above, in the present invention, the heating wire 40 is buried between the upper plate-like body and the lower plate-like body, which are arranged to face each other and face each other. The lower plate-like body with excellent conductivity and the upper plate-like body with excellent heat storage and insulation properties can be integrally laminated through the adhesive layer 30 .

The operator laminates and arranges the adhesive layer 30 on the lower plate-shaped body as needed, and then wires the heating wire 40 on the upper surface of the adhesive layer in a predetermined pattern. The heating wire may be fixed in position by the adhesive layer, and the laminated structure of the heating mat may be finished by stacking and arranging a waterproof nonwoven fabric sheet on the upper surface of the adhesive layer on which the heating wire is disposed.

As shown, the heating wire is embedded between the adhesive layer 30 and the waterproof nonwoven fabric sheet 50 in a predetermined pattern, for example, in a zigzag form, and is configured to emit far infrared rays along with heat generation.

In the embodiment of the present invention, the heating wire 40 is composed of a fiber heating wire layer 42 and a coating layer 43 centering on the core wire 41 that generates heat by applying current. As shown, the fiber heating layer 42 may be composed of carbon fibers surrounding the outer circumferential surface of the core wire 41, where the carbon fibers generate heat that converts electrical energy into thermal energy using filaments made of carbon components. It is material.

Specifically, the heating wire 40 includes a core wire 41, a fiber heating wire layer 42 disposed around the outer circumference of the core wire, and a coating layer 43 disposed around the outer circumferential surface of the fiber heating wire layer 42.

The core wire 41 may be a thin and long copper wire, as shown, or may be composed of a wire bundle made of a thin and long conductive material, if necessary.

The fiber heat wire layer 42 is a heating element capable of generating heat by receiving a current flowing along the outer circumferential surface of the core wire 41 . Optionally, the fiber heating wire layer 42 may be arranged by being braided so as to wrap and bind the outer circumference along the longitudinal direction of the core wire 41 with one or more carbon fibers, and may provide flexibility due to the nature of the braiding.

The coating layer 43 covers the outermost layer of the fiber heating wire layer 42 to protect components therein, and secures the flexibility (or flexibility) of the core wire and the fiber heating wire layer, while releasing from the core wire and/or the fiber heating wire layer. It is made of a material that can secure heat resistance and electrical insulation against heat.

In order to realize these characteristics, the coating layer 43 may be made of a composition of PVC fiber powder and carbon fiber powder. In general, carbon fibers can be expected to emit far-infrared rays, negative ions, and the like when generating heat. The far-infrared rays and negative ions emitted from the heating wire 40 can improve the growth environment of trees and the like in the vicinity where the heat dissipation mat is installed.

The composition ratio of the coating layer 43 includes PVC fiber powder in the range of 60wt% to 70wt% and carbon fiber powder in the range of 30wt% to 40wt%. If the coating layer contains more than 40 wt% of carbon fiber powder, the coating layer also has conduction performance when a current is applied to the core wire 41, which may cause a problem in the insulation of the heating mat. Preferably, the composition ratio of the coating layer includes 70 wt% of PVC fiber powder and 30 wt% of carbon fiber powder.

As described above, the present invention covers the outer circumferential surface of the heating wire 40 including the core wire 41 and/or the fiber heating wire layer 42, which generates heat according to the application of current, by an antifouling processing method, thereby providing a waterproof effect as well as a heat dissipation effect. can also be expected. This antifouling treatment can improve the durability of the heating wire 40 by preventing penetration of water, pesticides, etc. into the heating wire 40 in advance.

Although the present invention has been described in detail through examples, this is for explaining the present invention in detail, and the heating mat according to the present invention is not limited thereto, and within the technical spirit of the present invention, those skilled in the art It will be clear that the modification or improvement is possible by the person.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

10 ----- aluminum foil;
20 ----- fiberglass sheet;
30 ----- adhesive layer;
40 ----- heating wire,
50 ----- waterproof non-woven fabric sheet,
60 ----- CONTROL.

Claims (7)

an aluminum foil 10 facing the object to be heated;
a fiber glass sheet 20 laminated on the aluminum foil 10;
an adhesive layer 30 laminated on the fiber glass sheet 20;
A waterproof non-woven fabric sheet 50 laminated on the adhesive layer 30;
a heating wire 40 interposed between the adhesive layer 30 and the waterproof nonwoven fabric sheet 50 to generate heat when power is applied; and
A control unit 60 for adjusting power supply to the heating wire 40; includes,
The lower plate-shaped body formed by bonding the aluminum foil 10 and the fiberglass sheet 20 can uniformly diffuse the heat generated from the heating wire to the heating area,
The heating wire 40,
a core wire 41 that generates heat by applying an electric current;
a fiber heat wire layer 42 surrounding an outer circumferential surface of the core wire 41; and
And a coating layer 43 disposed around the outer circumferential surface of the fiber heating layer 42,
The coating layer 43 includes PVC fiber powder and carbon fiber powder,
The lower plate-shaped body is bonded by placing the fiberglass sheet 20 impregnated with an adhesive therein on the aluminum foil 10 and pressing it,
The aluminum foil 10 has a thin film structure and forms wrinkles on one surface facing the object to be heated.
delete The method of claim 1,
The heating mat in which the fiber heating wire layer 42 is braided and disposed on the outer circumferential surface of the core wire 41.

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