Efficient heat dissipation PTC heating block

Abstract

The utility model relates to an efficient heat dissipation PTC heating block which comprises two heat dissipation strips arranged in parallel and a thermistor arranged between the two heat dissipation strips, and each heat dissipation strip is composed of a heat conduction aluminum strip and a corrugated aluminum strip arranged on at least one side of the heat conduction aluminum strip. A connecting edge strip is adhered to one side, far away from the heat-conducting aluminum strip, of the corrugated aluminum strip, one side of the connecting edge strip is adhered and fixed to the corrugated aluminum strip, the other side of the connecting edge strip is adhered and fixed to the thermistor, a protruding connector is arranged at the end part of one side of the heat-conducting aluminum strip, and a connecting plug is sleeved and fixed on the connector through a screw; the end part, far away from the connector, of the connecting plug is provided with a plugging sheet, and the plugging sheet is provided with a circular connecting through hole. The LED lamp has the advantages of being simple in structure, firm in fixation, good in heat dissipation performance, high in overall strength, long in service life and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating blocks, and in particular relates to a high-efficiency heat dissipation PTC heating block. Background Art

[0002] PTC heater, also known as PTC heater, is an electric heater. Thermistor is one of the components in PTC heater, installed in PTC heater, used for overall heating, thermistor is composed of heat dissipation aluminum strip and wavy corrugated aluminum strip, due to the wavy structure design of corrugated aluminum strip, there will be the following problems: the wavy corrugated aluminum strip has a very small pasting surface area, resulting in poor stability of the corrugated aluminum strip after pasting, and when thermistor is in a high temperature environment for a long time, it will cause thermistor to expand and contract due to heat and cause deformation, further affecting its pasting effect, causing the connection surface to debond, loosen, etc., affecting normal operation, and the overall strength and heat dissipation performance of the existing PTC heating coil are relatively general, long-term work will greatly affect its service life, for this reason, a high-efficiency heat dissipation PTC heating block is designed to overcome the above problems. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and to provide a high-efficiency heat dissipation PTC heating block with simple structure, firm fixation, good heat dissipation, high overall strength and long service life.

[0004] The utility model is realized through the following technical scheme: a high-efficiency heat dissipation PTC heating block, which includes two heat dissipation strips arranged in parallel and a thermistor arranged between the two heat dissipation strips, wherein the heat dissipation strip is composed of a heat-conducting aluminum strip and a corrugated aluminum strip arranged on at least one side of the heat-conducting aluminum strip, a connecting edge strip is pasted on the side of the corrugated aluminum strip away from the heat-conducting aluminum strip, one side of the connecting edge strip is pasted and fixed to the corrugated aluminum strip, and the other side is pasted and fixed to the thermistor, a protruding connecting head is provided at one end of one side of the heat-conducting aluminum strip, a plug connector is sleeved on the connecting head and fixed by screws, a plug connector is provided at the end of the plug connector away from the connecting head, and a plug connector is provided on the plug connector, and a circular connecting through hole is provided on the plug connector.

[0005] Preferably, the connecting edge strips are provided with raised edges at both ends, which wrap the entire corrugated aluminum strip. The raised edges on both sides are close to the thermally conductive aluminum strip, and a certain gap is left between the thermally conductive aluminum strip for heat dissipation.

[0006] Preferably: the corrugated aluminum strip is formed by extruding and bending a whole piece of corrugated plate in a mold, and the overall structure is wavy. Bending parts are provided above and below the wavy structure. The bending parts are U-shaped or parallel structures, which are used for pasting and connecting edge strips and thermal conductive aluminum strips. At the bending parts, a plurality of corrugated windows with the plate walls inclined outward are provided on the plate walls of at least one corrugated plate. One side of the window is disconnected, and the remaining materials on three sides are arranged obliquely, which increases the air volume penetrating the corrugations and can take away more heat.

[0007] Preferably, the corrugated windows are provided on one of the walls of two adjacent corrugated plates at the bend, with their directions uniformly facing one side, or are arranged on both sides of the middle position of the wall, with the corrugated windows on both sides arranged in a mirror image.

[0008] Preferably, the corrugated windows are opened on the board walls of two adjacent corrugated plates at the bend, and their directions are uniformly toward one side, or are arranged on both sides of the middle position of the board wall, and the corrugated windows on both sides are relatively arranged in a mirror image, wherein the corrugated windows on the board walls of two adjacent corrugated plates are symmetrically or cross-arranged.

[0009] Preferably, the thermistor is composed of a whole piece or a plurality of thermistors arranged at equal distances.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1. The utility model can well increase the pasting area by designing the U-shaped or parallel structure (trapezoidal structure) corrugated aluminum strip, so that the stability of the corrugated aluminum strip after pasting and fixing is better.

[0012] 2. The utility model can greatly improve the connection stability between the thermistor, the thermally conductive aluminum strip and the corrugated aluminum strip and improve the overall strength through the designed connecting edge strips and surrounding edges, thereby increasing the overall service life.

[0013] 3. The utility model can improve the heat dissipation of the corrugated aluminum strips through the designed corrugated windows, reduce the deformation caused by thermal expansion and contraction caused by long-term high-temperature work, and thus increase the overall service life.

[0014] 4. The aluminum strip corrugation designed in the utility model is squeezed through the corrugated wall through an extrusion forming die. Each side of the corrugation protrudes 50 wires on the left and right respectively (one side is open and the remaining material is squeezed outward). The designed corrugated window increases the air volume passing through the corrugation, taking away more heat, greatly increasing the thermal efficiency, and improving the power and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2It is a partial enlarged view of a corrugated aluminum strip in the utility model.

[0017] Figure 3 It is a partial enlarged view of another type of corrugated aluminum strip in the utility model.

[0018] Figure 4 It is a schematic diagram of the structure after the utility model is installed. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms such as "up", "down", "left", "right", "inside", "outside", "horizontal" and "vertical" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or original referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, a high-efficiency heat dissipation PTC heating block comprises two heat dissipation strips 1 arranged in parallel and a thermistor 2 arranged between the two heat dissipation strips 1, wherein the heat dissipation strip 1 is composed of a heat-conducting aluminum strip 3 and a corrugated aluminum strip 4 arranged on at least one side of the heat-conducting aluminum strip 3, a connecting edge strip 5 is adhered to the side of the corrugated aluminum strip 4 away from the heat-conducting aluminum strip, one side of the connecting edge strip 5 is adhered and fixed to the corrugated aluminum strip 4, and the other side is adhered and fixed to the thermistor 2, a protruding connector 6 is provided at one end of one side of the heat-conducting aluminum strip 3, a plug connector 7 is sleeved on the connector 6 and fixed by screws, a plug connector 8 is provided at the end of the plug connector 7 away from the connector 6, and a circular connecting through hole 9 is provided on the plug connector 8.

[0022] The connecting edge strips 5 are provided with raised edges 13 at both ends, which wrap the entire corrugated aluminum strip 4. The raised edges 13 on both sides are close to the heat-conducting aluminum strip 3, and a certain gap 10 is left between the heat-conducting aluminum strip 3 for heat dissipation.

[0023] The utility model can greatly improve the connection stability between the thermistor, the thermally conductive aluminum strip and the corrugated aluminum strip and improve the overall strength through the designed connecting edge strips and surrounding edges, thereby increasing the overall service life, and the heat dissipation effect can be well improved through the designed gaps.

[0024] like Figure 2As shown, the corrugated aluminum strip 4 is formed by extruding and bending a whole piece of corrugated plate in a mold, and the overall structure is wavy. Bending parts 11 are arranged above and below the wavy structure. The bending parts 11 are U-shaped or parallel structures, which are used to paste and connect the edge strips 5 and the thermal conductive aluminum strips 3. In addition, a plurality of corrugated windows 12 with the plate walls inclined outward are opened on the plate walls of at least one corrugated plate at the bending parts 11. One side of the window is disconnected, and the remaining materials on three sides are arranged obliquely, which increases the air volume penetrating the corrugations and can take away more heat.

[0025] The crest curvature of the wave-like structure above this structure is designed with a trapezoidal and "U"-shaped structure. On each heat dissipation corrugated surface, multiple windows are opened at an angle of 20°-25° in the same direction. One side is disconnected, and the remaining material on three sides is slanted out, which increases the amount of air penetrating the corrugations and can take away more heat. It is equivalent to adding countless air guide strips. For PTC heating blocks of the same area, the power is more effectively improved.

[0026] The utility model can increase the pasting area well by designing a U-shaped or parallel structure (trapezoidal structure as a whole) corrugated aluminum strip, so that the stability of the corrugated aluminum strip after pasting and fixing is better. A connector is designed at one end of the heating block, and a plug connector connected to the connector is installed on the plug connector. A plug plate with a connecting through hole is used to facilitate connection with external devices, and the overall practicality is good.

[0027] like Figure 3 As shown, the corrugated windows 12 can also be opened on one of the walls of two corrugated plates adjacent to the bend 11, with their directions uniformly facing one side, or arranged on both sides of the middle position of the wall, with the corrugated windows 12 on both sides arranged in a mirror image.

[0028] The utility model can improve the heat dissipation of the corrugated aluminum strips through the designed corrugated windows, reduce the deformation caused by thermal expansion and contraction caused by long-term high-temperature operation, and thus improve the overall service life. In addition, the bending part of the corrugated aluminum strip of the utility model has a larger pasting surface area than the existing corrugated aluminum strips, ensuring that the corrugated aluminum strips are fixed and stable after pasting.

[0029] The corrugated windows 12 are opened on the board walls of two adjacent corrugated plates at the bend 11, and their directions are uniformly directed to one side, or arranged on both sides of the middle position of the board wall, and the corrugated windows 12 on both sides are arranged in a mirror image, wherein the corrugated windows 12 on the board walls of two adjacent corrugated plates are symmetrically or cross-arranged.

[0030] The aluminum strip corrugation in the utility model is squeezed through the corrugated wall by an extrusion forming die, and each side of the corrugation protrudes 50 wires on the left and right respectively (one side is open and the remaining material is squeezed outward). The designed corrugated window increases the air volume passing through the corrugation, takes away more heat, greatly increases the thermal efficiency, and improves the power and work efficiency.

[0031] like Figure 4 As shown, the thermistor 2 is composed of one or more thermistors arranged at equal distances. The thermistor designed in the utility model has a simple overall structure, convenient installation, good heat dissipation, high overall strength, and long service life.

[0032] The present invention installs the window corrugation in the connecting edge, puts a brazing aluminum sheet (or a bent sheet with a composite material) in the fitting surface between the rectangular surface of the heat dissipation corrugation and the connecting edge, fits the other plane of the rectangular corrugation with the straight aluminum sheet, and also puts a welding sheet (or a connecting edge with a composite material) in the same way to form an aluminum strip by high-temperature brazing process, and the flat sheet extends out of the rectangular corrugation, and the lead terminal is riveted by a pressure riveting process. The heating block is made of one or more heat dissipation aluminum strips, the surface of which is polished rough, and evenly brushed with thermal conductive silica gel, and multiple PTC thermistors are arranged in sequence between every two heat dissipation aluminum strips, and are fastened by tooling, and then put into a kiln for heating and curing (or the lead terminal of the aluminum heat dissipation strip between each row of PTC thermistors is connected to a power source, and the glue is cured by self-heating) so that the aluminum heat dissipation strip is inserted into the PTC thermistor sheet through the conductive heat dissipation strip and the thermistor are fastened, and then placed in a kiln for brazing.

[0033] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An efficient heat dissipation PTC heating block, comprising two heat dissipation strips arranged in parallel and a thermistor arranged between the two heat dissipation strips, characterized in that: The heat dissipation strip is composed of a heat-conducting aluminum strip and a corrugated aluminum strip arranged on at least one side of the heat-conducting aluminum strip, a connecting edge strip is pasted on the side of the corrugated aluminum strip away from the heat-conducting aluminum strip, one side of the connecting edge strip is pasted and fixed to the corrugated aluminum strip, and the other side of the connecting edge strip is pasted and fixed to the thermistor, one end of one side of the heat-conducting aluminum strip is provided with a protruding connecting head, a plug connector is sleeved on the connecting head and fixed by screws, a plug connector is provided at the end of the plug connector away from the connecting head, and a circular connecting through hole is provided on the plug connector.

2. The high-efficiency heat dissipation PTC heating block according to claim 1 is characterized in that: The ends of both sides of the connecting edge strip are provided with raised edges, which wrap the entire corrugated aluminum strip. The raised edges on both sides are close to the heat-conducting aluminum strip, and a certain gap is left between the heat-conducting aluminum strip for heat dissipation.

3. The high-efficiency heat dissipation PTC heating block according to claim 2 is characterized in that: The corrugated aluminum strip is formed by extruding and bending a whole piece of corrugated plate in a mold, and has an overall wavy structure. Bending parts are arranged above and below the wavy structure. The bending parts are U-shaped or parallel structures, which are used for pasting and connecting edge strips and heat-conducting aluminum strips. In addition, at the bending parts, a plurality of corrugated windows with the plate walls inclined outward are opened on the plate walls of at least one corrugated plate. One side of the window is disconnected, and the remaining materials on three sides are arranged obliquely, which increases the air volume penetrating the corrugations and can take away more heat.

4. The high-efficiency heat dissipation PTC heating block according to claim 3 is characterized in that: The corrugated windows are opened on one of the board walls of two adjacent corrugated boards at the bend, and their directions are uniformly facing one side, or arranged on both sides of the middle position of the board wall, and the corrugated windows on both sides are arranged in a mirror image.

5. The high-efficiency heat dissipation PTC heating block according to claim 3 is characterized in that: The corrugated windows are opened on the board walls of two adjacent corrugated plates at the bend, and their directions are uniformly directed to one side, or arranged on both sides of the middle position of the board wall, and the corrugated windows on both sides are arranged in a mirror image relative to each other, wherein the corrugated windows on the board walls of two adjacent corrugated plates are symmetrically or cross-arranged.

6. The high-efficiency heat dissipation PTC heating block according to claim 1 is characterized in that: The thermistor is composed of a whole piece or a plurality of thermistors arranged at equal distances.

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