CN201197197Y

CN201197197Y - PTC gridding surface-shape heater

Info

Publication number: CN201197197Y
Application number: CNU2008200662488U
Authority: CN
Inventors: 卢绍芫
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-31
Filing date: 2008-03-31
Publication date: 2009-02-18
Anticipated expiration: 2018-03-31

Abstract

The utility model relates to a PTC grid face shape heating element, which consists of a heating part and an electrode. The heating part consists of a PTC heating part carrier and a PTC material coating the carrier; the PTC heating part carrier is woven into a grid face shape structure by use of fibers; and a metal wire is woven and embedded in a corresponding position of the PTC heating part carrier as the electrode of the heating element. The heating element has the advantages that the structure of the heating element has flexibility, strength, deformation and other application adaptability, solves and improves the problems of the prior PTC face shape heating element of flaky films, greatly improves the thermal efficiency per unit area, and extends the application fields and application modes of PTC electric heating.

Description

PTC grid-shaped planar heat producing body

Technical field

The utility model relates to the structure of PTC (positive temperature coefficient heater) heater, particularly is coated with on the carrier with the planar structure of grid-shaped of fiber establishment to add ptc material, constitutes PTC grid-shaped planar heat producing body.

Background technology

At present, the primary structure of PTC planar heat producing body: sheet film as: film, plastic sheet etc. are gone up the printing ptc material or ptc material and moulding filler such as rubber etc. are mixed aftershaping, also have and are processed into the practice that carbon element PTC fiber is worked out again.

Yet, above-mentioned structure exists on processing and the manufacture craft easily owing to the restriction of heating layer shape deterioration or damage, electrode loose contact, specific service condition, be not easy the restriction that problem such as maintenance and repair causes purposes in various degree using, and also exists problems such as technology is numerous and diverse, processing cost height in making.

Summary of the invention

The problems referred to above that the utility model exists at prior art, and provide a kind of PTC grid-shaped planar heat producing body, not only solve or improve the problems referred to above of prior art existence from structure, also increase substantially the heat efficiency of unit are, can also constitute the PTC grid-shaped planar heat producing body that requires applicable to multiple different temperatures by adjusting heat generating part structure and carrier material.

The technical solution of the utility model is:

PTC grid-shaped planar heat producing body, form by heat generating part and electrode, as shown in Figure 1, heat generating part applies ptc material by PTC heat generating part carrier with on this carrier and forms, PTC heat generating part carrier is compiled into the planar structure of grid-shaped by fiber, and embeds the electrode of wire as this heater in the braiding of the relevant position of this carrier.

The thickness of described heat generating part is 0.2-0.7mm.

The fiber of described PTC heat generating part carrier is materials such as polyster fibre, asbestos fibre or glass fibre, selects different fiber materials for use according to different purposes, is compiled into the carrier of performances such as varying strength, pliability, tension force.

The grid establishment of the grid-shaped structure of described PTC heat generating part carrier is shaped as square grid such as Fig. 4, shown in Figure 5, or the hexagonal rhombus, also can be the grid of other shapes, and the count of grid is: 100-300 grid/square centimeter.

Described electrode position is arranged on the two ends of heat generating part carrier, and it is 5-7mm that metal wire knitted embeds width, as shown in Figure 6.Wire adopts the wire and the fibrage that can be complementary with the flexibility of PTC heat generating part carrier to embed synchronously.

Insulation film in the PTC grid-shaped planar heat producing body two sides encapsulation of making, and extraction electrode.

The used ptc material of the utility model is the PTC coating of using always, as: with thermoplastic resin and conduction carbon element is the coating of principal component formation, impedance material, the BaTiO that macromolecule Polymer is class ₃Ceramic-like semi-conducting material etc.

The utility model is compared with the PTC planar heat producing body of existing sheet film: behind the ptc material that the utility model PTC heat generating part carrier applies PTC fiber section as shown in Figure 2, PTC sheet film section is as shown in Figure 3.Because fiber section circumference=π * sheet film section length, so the surface area of the heat generating part carrier that need be coated with also is about 3 times of PTC sheet-shaped heating element, promptly its caloric value also is 3 times.

The utility model structure possesses the adaptability that flexibility, intensity, deformation etc. are used, also solve and improved the problem of the PTC planar heat producing body existence of existing sheet film, also increase substantially the heat efficiency of unit are, the application and the application mode of PTC electric heating are more extensive with making.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a PTC fiber sectional schematic diagram behind the coating ptc material of the present utility model.

Fig. 3 is a PTC sheet film sectional schematic diagram behind the existing coating ptc material.

Fig. 4, Fig. 5 are square net structure braiding schematic diagram of the present utility model.

Fig. 6 is a structural representation of the present utility model.

Embodiment

The utility model will be further described for the structure accompanying drawing.

As shown in Figure 1, the utility model is made up of heat generating part 1 and electrode 2, heat generating part 1 applies ptc material by PTC heat generating part carrier with on this carrier and forms, PTC heat generating part carrier is compiled into the planar structure of grid-shaped by fiber, and embeds the electrode 2 of wire as this heater in the braiding of PTC heat generating part carrier relevant position.

The diameter that adopts 42 lines to form is that polyster fibre silk thread and the diameter of 0.05mm is the copper wire of 0.05mm, structure by PTC heat generating part carrier is compiled into the planar structure of grid-shaped with fiber, and embed the electrode of wire as this heater in PTC heat generating part carrier relevant position braiding, and the mesh-density of this carrier: 150 grid/square centimeters, thickness are about the PTC heat generating part carrier that 0.1mm, width are about 190mm.Being coated with thermoplastic resin on the PTC heat generating part carrier is the PTC coating that principal component constitutes with the conduction carbon element, and coating layer thickness is about 0.05mm, hot briquetting PTC grid-shaped planar heat producing body, as shown in Figure 1.About 470 Ω of this heater impedance, rated voltage AC100V, PTC autocontrol temperature are about 60 ℃.

With after keeping doing bending, on-right angle convolution and distortion arbitrarily under the inter-electrode impedance prerequisite, respectively, after the rated voltage energising, its electric heating property remains unchanged with the above-mentioned PTC grid-shaped planar heat producing body of making.

The above-mentioned PTC grid-shaped planar heat producing body of making is solid on plank with iron nail plane nail, and after the rated voltage energising, its electric heating property remains unchanged.

With above-mentioned in the encapsulation of the PTC grid-shaped planar heat producing body two sides of making insulating barrier, and extraction electrode.Its deformation and tension force performance are subjected to the restriction of this insulator again on the limit of the deformation of former heater and tension force.

With above-mentioned in the encapsulation of the PTC grid-shaped planar heat producing body two sides of making insulating barrier, and introduce electrode, do bending, on-right angle convolution and arbitrarily the distortion back, with the solid experiment on plank of iron nail plane nail, its electric heating property remains unchanged.

Claims

1.PTC grid-shaped planar heat producing body, form by heat generating part and electrode, it is characterized in that: heat generating part applies ptc material by PTC heat generating part carrier with on this carrier and forms, PTC heat generating part carrier is compiled into the planar structure of grid-shaped by fiber, and embeds the electrode of wire as this heater in the braiding of the relevant position of this carrier.

2. PTC grid-shaped planar heat producing body according to claim 1 is characterized in that: the thickness of described heat generating part is 0.2-0.7mm.

3. PTC grid-shaped planar heat producing body according to claim 1 is characterized in that: the fiber of described PTC heat generating part carrier is polyster fibre, asbestos fibre or glass fibre.

4. PTC grid-shaped planar heat producing body according to claim 1 is characterized in that: the count of the fibrage grid of described PTC heat generating part carrier is: 100-300 grid/square centimeter.

5. PTC grid-shaped planar heat producing body according to claim 1 is characterized in that: the grid establishment of the grid-shaped structure of described PTC heat generating part carrier is shaped as square grid or hexagonal rhombus.

6. PTC grid-shaped planar heat producing body according to claim 1 is characterized in that: described electrode position is the two ends of heat generating part carrier, and it is 5-7mm that metal wire knitted embeds width.

7. PTC grid-shaped planar heat producing body according to claim 1 is characterized in that: insulating barrier in the PTC grid-shaped planar heat producing body two sides encapsulation of making, and extraction electrode.