Winding sheet heating body

Abstract

The invention discloses a wire winding sheet heating body, which relates to the technical field of heaters, and comprises a carrier seat, a heating wire and a heat transfer sheet, the middle part of the carrier seat is a mounting part, the heating wire is wound on the mounting part and forms a heating part, two ends of the heating wire extend out of the mounting part and are used for being connected with a wire, and the heat transfer sheet is mounted on the carrier seat. The heat transfer piece covers at least one side of the heating part and is tightly attached to the outer surface of the electric heating wire. The heating device is simple in structure and convenient to machine, and the heating function can be achieved with low power.

Description

Technical Field

[0001] The invention relates to the technical field of heaters, in particular to a coiled sheet heating element. Background Art

[0002] At present, the heating element of traditional electric mosquito coil heaters is mostly assembled by stainless steel surface sheet and ceramic sheet. Its production process is to first install two poles and positive temperature coefficient thermistor (PTC) or high temperature co-fired ceramic heating sheet (MCH) on the ceramic sheet, then put it on the back of the stainless steel surface sheet (insulating paper has been placed inside the stainless steel surface sheet), and then put it on a special device to clamp the stainless steel surface sheet to the ceramic sheet.

[0003] Whether it is PTC or MCH, the heating element area is relatively small. If the area is to be enlarged, the cost will be very high. When using PTC or MCH, the power of traditional heating elements is generally relatively large. In some outdoor mobile products (battery-based products), the use time is relatively short and cannot meet market demand.

[0004] At the same time, the heating element of the traditional electric mosquito coil heater needs to be processed by special equipment during the production process and needs to be assembled manually, which not only has high production costs but also wastes labor. Summary of the invention

[0005] The object of the present invention is to provide a coil heating element to solve the problems existing in the above-mentioned prior art, which has a simple structure, is easy to process, and can realize the heating function with relatively low power.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a wire-wound heating element, comprising a carrier seat, a heating wire and a heat transfer sheet, wherein the middle portion of the carrier seat is a mounting portion, the heating wire is wound on the mounting portion to form a heating portion, and both ends of the heating wire extend out of the mounting portion and are used to connect wires, the heat transfer sheet is mounted on the carrier seat, and the heat transfer sheet covers at least one side of the heating portion, and the heat transfer sheet is in close contact with the outer surface of the heating wire.

[0008] Preferably, insulating paper is installed between the heat transfer sheet and the heating part.

[0009] Preferably, a heat conducting layer is installed between the heat transfer sheet and the heating part.

[0010] Preferably, the carrier seat includes the mounting portion and two extension portions, the two extension portions are respectively fixed on both sides of the mounting portion, and the upper and lower ends of the extension portions both protrude from the mounting portion, and the two extension portions are used to connect and limit the heat transfer plate.

[0011] Preferably, a limiting block is provided on the inner side of each of the extending portions, the limiting block extends to be located above the mounting portion, and the limiting block is used to press on the edge of the upper end surface of the heat transfer plate.

[0012] Preferably, the carrier seat is made of plastic.

[0013] Preferably, the heating wire is an enameled wire or a bare wire.

[0014] Preferably, the heat transfer sheet is made of metal material.

[0015] Preferably, the heat transfer plate is made of aluminum or steel.

[0016] Preferably, there are two heat transfer sheets, and the two heat transfer sheets are respectively located on two sides of the mounting portion, and the two heat transfer sheets respectively cover two sides of the heating portion.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The present invention provides a winding sheet heating element, the middle part of the carrier seat is the mounting part, the electric heating wire is wound on the mounting part and forms the heating part, and then the winding range of the electric heating wire can be adjusted according to the actual heating needs to achieve the adjustment of the heating area, the two ends of the electric heating wire extend out of the mounting part and are used to connect the wire, the heat transfer sheet is installed on the carrier seat, and the heat transfer sheet covers at least one side of the heating part, the heat transfer sheet is close to the outer surface of the electric heating wire, and then the heat generated by the electric heating wire is efficiently transferred to the heat transfer sheet, and the electric heating wire wound and arranged cooperate with the arrangement of the heat transfer sheet to increase the heating area, and at the same time, according to product requirements, the area of ​​the heat transfer sheet and the heating area generated by the electric heating wire can be reasonably designed to keep the temperature of each part of the surface of the heat transfer sheet consistent, and then when applied to various types of volatile heaters, the liquid medicine can be uniformly volatilized. Through the above design, the present invention has a higher effective heat conduction efficiency than the traditional sheet heating element, and then the present invention can make the power of the winding sheet heating element lower under the same sheet heating element surface temperature, so that the winding sheet heating element provided by the present invention can be applied to some outdoor mobile products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of the coil heating element in the first embodiment;

[0021] Figure 2 This is a structural exploded view of the coil heating element in Example 1;

[0022] Figure 3 This is a schematic diagram of the structure of the coil heating element in the second embodiment;

[0023] Figure 4 This is a structural exploded view of the coil heating element in the second embodiment;

[0024] In the figure: 1-carrier seat, 11-installation part, 12-extension part, 13-limiting block, 2-heat transfer plate, 3-heating wire, 4-insulating paper. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The purpose of the present invention is to provide a coil heating element to solve the problems existing in the prior art, which has a simple structure, is easy to process, and can achieve a heating function with relatively low power.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Embodiment 1

[0029] like Figure 1-Figure 2As shown, this embodiment provides a wound sheet heating element, including a carrier seat 1, a heating wire 3 and a heat transfer sheet 2. The middle part of the carrier seat 1 is a mounting portion 11. The heating wire 3 is wound on the mounting portion 11 to form a heating portion. Then, according to actual heating needs, the winding range of the heating wire 3 can be adjusted to achieve adjustment of the heating area. Both ends of the heating wire 3 extend out of the mounting portion 11 and are connected to wires by riveting, wrapping, welding and other different methods to achieve power supply. The heat transfer sheet 2 is installed on the carrier seat 1, and the heat transfer sheet 2 covers one side of the heating portion. The heat transfer sheet 2 is closely attached to the outer surface of the heating wire 3, so that the heat generated by the heating wire 3 is efficiently transferred to the heat transfer sheet 2. The wound heating wire 3 cooperates with the setting of the heat transfer sheet 2 to increase the heating area. At the same time, according to product requirements, the area of ​​the heat transfer sheet 2 and the heating area generated by the heating wire 3 can be reasonably designed to keep the temperature of each part of the surface of the heat transfer sheet 2 consistent. Then, when it is applied to various volatile heaters, the medicine can be evenly volatilized. Through the above design, the diameter of the heating wire 3 in this embodiment is relatively thin compared with the traditional sheet heating element, so that the effective heat on the heating wire 3 can be efficiently transferred to the heat transfer sheet 2, making the effective heat conduction efficiency higher. As a result, under the condition of the same sheet heating element surface temperature, the power of the wound sheet heating element can be made lower, so that the wound sheet heating element provided by this embodiment can be applied to some outdoor mobile products.

[0030] Specifically, an insulating paper 4 is installed between the heat transfer sheet 2 and the heating part, so that the heat conduction process is from the heating wire 3 to the insulating paper 4 and then to the heat transfer sheet 2 .

[0031] A heat conducting layer is also installed between the heat transfer sheet 2 and the heating part to improve the heat conduction efficiency.

[0032] The carrier seat 1 includes a mounting portion 11 and two extension portions 12 . The two extension portions 12 are respectively fixed on both sides of the mounting portion 11 , and the upper and lower ends of the extension portions 12 protrude from the mounting portion 11 . The two extension portions 12 are used to connect and limit the heat transfer sheet 2 .

[0033] Each extension portion 12 is provided with a stopper 13 on its inner side. The stopper 13 extends to the upper side of the mounting portion 11 and is used to press against the upper edge of the heat transfer sheet 2. The heat transfer sheet 2 can also be fixed to the carrier seat 1 by gluing.

[0034] The carrier seat 1 is made of plastic, and those skilled in the art can adaptively adjust its material according to actual needs.

[0035] The heating wire 3 can be an enameled wire or a bare wire, as long as it can meet the heating requirement.

[0036] The heat transfer sheet 2 is made of metal material, preferably aluminum or steel, and has good heat transfer performance and high heat transfer efficiency.

[0037] Embodiment 2

[0038] like Figure 3-Figure 4 As shown, the difference between this embodiment and the first embodiment is that there are two heat transfer sheets 2, and the two heat transfer sheets 2 are respectively located on both sides of the mounting portion 11, and the two heat transfer sheets 2 respectively cover both sides of the heating portion, thereby forming a double-sided heating body.

[0039] The designs in the first and second embodiments can be applied to heating elements in volatile heaters such as electric mosquito coil heaters, electric heating sheet perfumers, and electric heating aromatherapy devices. In the actual manufacturing process of this embodiment, the electric heating wire 3 is first wound on the carrier seat 1, and the heating area, that is, the area of ​​the winding plane, can be set according to product requirements; then the heat transfer sheet 2 is installed on the carrier seat 1, and the limit block 13 on the carrier seat 1 is used to press the heat transfer sheet 2, so that the electric heating wire 3 and the heat transfer sheet 2 are closely attached. At the same time, insulating paper 4 and a heat conductive layer (such as heat conductive silicone grease and other heat conductive materials) can be added between the electric heating wire 3 and the heat transfer sheet 2 as needed. In the actual application process, one or two heat transfer sheets 2 can be selected and installed as needed, and then assembled to form a single-sided sheet heating element or a double-sided sheet heating element.

[0040] During the combustion process of the heating wire 3, an automated winding device can be used for winding, and then the heat transfer plate 2 can be assembled by the automated device, thereby improving production efficiency. The heating wire 3 can be wound in a variety of ways, for example, it can be wound up and down or on a plane as needed.

[0041] The heating wire 3 in the first and second embodiments can be connected as a resistor, and can be applied to low-voltage products, such as 3.7V, 5V, 12V, 24V and other products, and can also be applied to high-voltage products, such as 100V-230V products, according to product design requirements. At the same time, according to the voltage and surface temperature requirements of the winding sheet heating element, the parameters of the heating wire 3 are determined, and the constant power of the winding sheet heating element can be determined. In the application of batch products, the thermal conductivity between the heating wire 3 and the heat transfer sheet 2 remains relatively consistent, so the surface temperature consistency of the batch-produced products can be guaranteed, thereby meeting product requirements.

[0042] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A coil heating element, characterized in that: It includes a carrier seat, a heating wire and a heat transfer sheet, the middle part of the carrier seat is a mounting part, the heating wire is wound on the mounting part to form a heating part, and both ends of the heating wire extend out of the mounting part and are used to connect wires, the heat transfer sheet is installed on the carrier seat, and the heat transfer sheet covers at least one side of the heating part, and the heat transfer sheet is in close contact with the outer surface of the heating wire.

2. The wire-wound heating element according to claim 1, characterized in that: Insulating paper is also installed between the heat transfer sheet and the heating part.

3. The wire-wound heating element according to claim 1, characterized in that: A heat conducting layer is also installed between the heat transfer sheet and the heating part.

4. The wire wound heating element according to claim 1, characterized in that: The carrier seat includes the mounting portion and two extension portions, the two extension portions are respectively fixed on both sides of the mounting portion, and the upper and lower ends of the extension portion both protrude from the mounting portion, and the two extension portions are used to connect and limit the heat transfer plate.

5. The wire wound heating element according to claim 4, characterized in that: A limiting block is provided on the inner side of each of the extending portions. The limiting block extends to be located above the mounting portion, and the limiting block is used to press on the upper end surface edge of the heat transfer plate.

6. The wire-wound heating element according to claim 4, characterized in that: The carrier seat is made of plastic.

7. The wire-wound heating element according to claim 1, characterized in that: The heating wire is an enameled wire or a bare wire.

8. The wire wound heating element according to claim 1, characterized in that: The heat transfer sheet is made of metal material.

9. The wire wound heating element according to claim 1, characterized in that: The heat transfer sheet is made of aluminum or steel.

10. The wire-wound heating element according to claim 1, characterized in that: There are two heat transfer sheets, and the two heat transfer sheets are respectively located on two sides of the mounting portion, and the two heat transfer sheets respectively cover two sides of the heating portion.

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