CN111479344A - Ceramic PTC electric heater with shoveling fins - Google Patents
Ceramic PTC electric heater with shoveling fins Download PDFInfo
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- CN111479344A CN111479344A CN202010382643.2A CN202010382643A CN111479344A CN 111479344 A CN111479344 A CN 111479344A CN 202010382643 A CN202010382643 A CN 202010382643A CN 111479344 A CN111479344 A CN 111479344A
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- aluminum pipe
- fin
- electric heater
- ptc electric
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
- H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
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Abstract
The invention relates to the field of PTC electric heaters, in particular to a shovel fin ceramic PTC electric heater, which comprises a fin type aluminum pipe and a heating core arranged on the fin type aluminum pipe, wherein the fin type aluminum pipe comprises an aluminum pipe with a cavity, and a first radiating fin and a second radiating fin which are respectively arranged on the upper end surface and the lower end surface of the aluminum pipe, the upper side and the lower side of the cavity are jointed with the upper end surface and the lower end surface of the heating core to form an upper end surface radiating structure and a lower end surface radiating structure, the left side and the right side of the cavity are jointed with the left end surface and the right end surface of the heating core after being laterally compressed and formed by a mould to form a left end surface radiating structure and a right end surface radiating structure, the whole optimization structure is simple, the problem of poor pressure resistance caused by the fact that the pressure of a product is large and the ceramic plate is cracked is solved only by, the number of heating sheets is reduced, and the cost is reduced.
Description
Technical Field
The invention relates to the field of PTC electric heaters, in particular to a shovel fin ceramic PTC electric heater.
Background
At present, the radiating fin type PTC electric heater is spreading in the application of air conditioner and other air heating equipment, especially in the indoor machine of split wall hanging type or cabinet air conditioner. Due to the structural characteristics of the conventional radiating fin type PTC electric heater, after the PTC element and an electrode plate for electric conduction are wrapped and plugged into a through hole of the shovel tooth type radiator, radiating fins on two sides of the through hole are required to be compressed, stress is generated under high-temperature use for a long time to reduce the pressing force of a fin type aluminum pipe on a heating core, so that the power attenuation of the product is accelerated.
Disclosure of Invention
In order to solve the above problems, the present invention proposes a shovel fin ceramic PTC electric heater.
The shovel fin ceramic PTC electric heater comprises a fin type aluminum pipe and a heating core arranged on the fin type aluminum pipe, wherein the fin type aluminum pipe comprises an aluminum pipe with a cavity, a first radiating fin and a second radiating fin, the first radiating fin and the second radiating fin are respectively arranged on the upper end face and the lower end face of the aluminum pipe, the upper side and the lower side of the cavity are attached to the upper end face and the lower end face of the heating core to form an upper end face radiating structure and a lower end face radiating structure, and the left side and the right side of the cavity are attached to the left end face and the right end face of.
The left end face and right end face heat dissipation structures are radiating fins which are arranged on the left inner wall and right inner wall of the cavity and are convenient for the heating core to be attached to the left end face and right end face of the aluminum pipe.
The radiating fins are ladder-shaped radiating fins with the thickness gradually reduced from the heating core to the two sides of the aluminum pipe.
The side end face of the aluminum pipe is provided with a first inner groove and a second inner groove which are distributed along the length direction of the aluminum pipe and are symmetrically distributed relative to the trapezoidal radiating fins
The left end face and the right end face of the heat dissipation structure are V-shaped groove heat dissipation fins which are arranged on the side end faces of the aluminum tubes and have V-shaped cross sections.
Grooves distributed along the length direction of the aluminum pipe are arranged on transition parts of the first radiating fin and the second radiating fin and the corresponding left end part and right end part of the aluminum pipe.
The upper end face and the lower end face of the heat dissipation structure comprise aluminum pipe walls arranged in the aluminum pipe and attached to the upper surface and the lower surface of the heating core, and gradient surfaces arranged at two side edges of the aluminum pipe walls.
The gradient surface is deformed by force to form a micro triangle which can reduce the attenuation and acceleration of the product power.
The invention has the beneficial effects that: the invention has simple integral optimized structure, only needs to adjust the structural die of the aluminum pipe, does not need to change the whole production process, has small volume of the aluminum pipe, reduces the cost, simultaneously solves the problem that the pressing force of the finned aluminum pipe to the heating core is reduced due to stress generated under high-temperature use for a long time, so that the power attenuation of the product is accelerated, and improves the service life of the product; the problem that the pressure control of a pressure pipe is not in place due to the fact that the pressure of a product is large and the ceramic piece is cracked to cause poor pressure resistance is solved through the left end face and right end face heat dissipation structures, meanwhile, 2-face lamination of the aluminum pipe and the heating core is changed into 4-face lamination, heat dissipation performance of the product is improved, the number of heating pieces is reduced, and cost is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;
fig. 4 is a partial enlarged structural diagram of the gradient surface of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below.
The first embodiment is as follows:
as shown in fig. 1, 2 and 4, the shovel fin ceramic PTC electric heater comprises a fin aluminum tube and a heating core 1 arranged on the fin aluminum tube, wherein the fin aluminum tube comprises an aluminum tube 2 with a cavity 5, and a first heat dissipation fin 3 and a second heat dissipation fin 4 which are respectively arranged on the upper end surface and the lower end surface of the aluminum tube 2, the upper side and the lower side of the cavity 5 are attached to the upper end surface and the lower end surface of the heating core 1 to form an upper end surface and a lower end surface heat dissipation structure, and the left side and the right side of the cavity 5 are attached to the left end surface and the right end surface of the heating core 1 after being laterally compressed and molded by a.
The left and right end face heat dissipation structures are radiating fins which are arranged on the left and right inner walls of the cavity 5 and are convenient for the heating core 1 to be attached to the left and right end faces of the aluminum pipe 2.
The radiating fins are ladder-shaped radiating fins 7 with the thickness gradually reduced from the heating core 1 to the two sides of the aluminum pipe 2.
The side end face of the aluminum pipe 2 is provided with a first inner groove 12 and a second inner groove 6 which are distributed along the length direction of the aluminum pipe 2 and are symmetrically distributed relative to the trapezoidal radiating fins 7.
The gradient surface 8 is deformed under stress to form a micro triangle which can reduce the pressing force of the fin type aluminum pipe to the heating core 1 to be reduced caused by stress generated under high temperature use for a long time, so that the power attenuation of the product is accelerated.
The miniature triangular aluminum tube heating core is used at high temperature for a long time, the pressing force of the finned aluminum tube on the heating core 1 is reduced due to stress generated by the miniature triangular aluminum tube heating core, the power attenuation of a product is accelerated, the service life of the product can be prolonged, and meanwhile, the miniature triangular aluminum tube heating core has strong practicability.
The gradient surface 8 and the groove 9 of the inner cavity 5 of the fin type aluminum pipe and the trapezoidal radiating fins 7 meet the definition requirements in terms of size, inclination and position, and the parts with undefined shape and size can be adjusted according to the actual design.
The gradient surfaces 8 are arranged on the upper surface 11 and the lower surface 11 of the cavity and are close to the two side edges, the gradient surfaces 8 can transmit pressure to the aluminum pipe wall 11 more easily, the structure of the gradient surfaces 8 is stressed and deformed to form a micro triangle, the reduction of pressing force of the fin type aluminum pipe on the heating core 1 caused by stress generated under high-temperature use for a long time can be reduced, the power attenuation of a product is accelerated, and the service life of the product can be prolonged.
The upper end face and the lower end face radiating structures comprise aluminum pipe walls 11 which are arranged in the aluminum pipes 2 and are attached to the upper surface and the lower surface of the heating core 1, and gradient surfaces 8 which are arranged at the positions of two side edges of the aluminum pipe walls 11.
The gradient surface 8 is deformed under stress to form a micro triangle which can reduce the attenuation and acceleration of the product power.
Set up and receive the back at recess 9 at aluminum pipe 2 pressure, pressure is too strong, presses heating core 1 and can lead to the piece that generates heat cracked, influences product life.
The heating core 1 is attached to the surface of the aluminum tube 4 through the two groups of grooves and the trapezoidal radiating fins 7, namely the heating core 1 is attached to the aluminum tube walls 11 distributed correspondingly from top to bottom, and the combination and heat dissipation of the upper surface and the lower surface of the early product are broken through.
Example two:
as shown in fig. 1, 3 and 4, the shovel fin ceramic PTC electric heater comprises a fin aluminum tube and a heating core 1 arranged on the fin aluminum tube, wherein the fin aluminum tube comprises an aluminum tube 2 with a cavity 5, and a first heat dissipation fin 3 and a second heat dissipation fin 4 which are respectively arranged on the upper end surface and the lower end surface of the aluminum tube 2, the upper side and the lower side of the cavity 5 are attached to the upper end surface and the lower end surface of the heating core 1 to form an upper end surface and a lower end surface heat dissipation structure, and the left side and the right side of the cavity 5 are attached to the left end surface and the right end surface of the heating core 1 after being laterally compressed and molded by a.
The left end face and the right end face of the heat dissipation structure are V-shaped groove heat dissipation fins 10 which are arranged on the end faces of the aluminum pipe 2 and have V-shaped cross sections.
The gradient surface 8, the groove 9 and the protruding surface 7 of the inner cavity 5 of the fin type aluminum pipe meet the definition requirements in terms of size, inclination and position, and the parts with undefined shapes and sizes can be adjusted according to the actual design.
Set up and receive the back at recess 9 at aluminum pipe 2 pressure, pressure is too strong, presses heating core 1 and can lead to the piece that generates heat cracked, influences product life.
The heating core 1 is attached to the surface of the aluminum tube 4 through the two groups of grooves and the V-shaped groove radiating fins 10, namely the heating core 1 is attached to the aluminum tube walls 11 distributed correspondingly on the upper surface and the lower surface, so that the combination and heat dissipation of the upper surface and the lower surface of an early product are broken through.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Shovel fin ceramic PTC electric heater, including fin formula aluminum pipe, set up heating core (1) on the fin formula aluminum pipe, the fin formula aluminum pipe including aluminum pipe (2) that have cavity (5), first radiating fin (3) and second radiating fin (4) that the terminal surface set up respectively about aluminum pipe (2), its characterized in that: the upper side and the lower side of the cavity (5) are attached to the upper end face and the lower end face of the heating core (1) to form an upper end face and a lower end face heat dissipation structure, and the left side and the right side of the cavity (5) are attached to the left end face and the right end face of the heating core (1) to form a left end face and right end face heat dissipation structure after being laterally compressed and molded by a mold.
2. The spade fin ceramic PTC electric heater according to claim 1, wherein: the left end face and right end face heat dissipation structure is a heat dissipation sheet which is arranged on the left inner wall and right inner wall of the cavity (5) and is convenient for the heat generation core (1) to be attached to the left end face and right end face of the aluminum pipe (2).
3. A spade fin ceramic PTC electric heater according to claim 2 wherein: the radiating fins are trapezoidal radiating fins (7) with gradually reduced thickness from the heating core (1) to the two sides of the aluminum pipe (2).
4. A spade fin ceramic PTC electric heater according to claim 3 wherein: the end face of the side of the aluminum pipe (2) is provided with a first inner groove (12) and a second inner groove (6) which are distributed along the length direction of the aluminum pipe (2) and symmetrically distributed relative to the trapezoidal radiating fins (7).
5. The spade fin ceramic PTC electric heater according to claim 1, wherein: the left end face and the right end face of the heat dissipation structure are V-shaped groove heat dissipation fins (10) which are arranged on the side end faces of the aluminum pipe (2) and have V-shaped cross sections.
6. A spade fin ceramic PTC electric heater according to any of claims 1 to 5, wherein: grooves (9) distributed along the length direction of the aluminum pipe (2) are arranged on the transition parts of the first radiating fin (3) and the second radiating fin (4) and the corresponding left end part and right end part of the aluminum pipe (2).
7. The spade fin ceramic PTC electric heater according to claim 1, wherein: the upper end face and the lower end face of the heat dissipation structure comprise aluminum pipe walls (11) which are arranged in the aluminum pipes (2) and are attached to the upper surface and the lower surface of the heating core (1) in a distribution mode, and gradient surfaces (8) which are arranged at the positions of two side edges of the aluminum pipe walls (11).
8. The spade fin ceramic PTC electric heater according to claim 7, wherein: the gradient surface (8) is deformed by force to form a micro triangle which can reduce the attenuation and acceleration of the product power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382643.2A CN111479344A (en) | 2020-05-08 | 2020-05-08 | Ceramic PTC electric heater with shoveling fins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010382643.2A CN111479344A (en) | 2020-05-08 | 2020-05-08 | Ceramic PTC electric heater with shoveling fins |
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| Publication Number | Publication Date |
|---|---|
| CN111479344A true CN111479344A (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010382643.2A Pending CN111479344A (en) | 2020-05-08 | 2020-05-08 | Ceramic PTC electric heater with shoveling fins |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505661A (en) * | 2022-02-15 | 2022-05-17 | 航天华盛源机电（苏州）有限公司 | Production method for shovel-tooth-shaped radiating fin and shovel-tooth machine |
-
2020
- 2020-05-08 CN CN202010382643.2A patent/CN111479344A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114505661A (en) * | 2022-02-15 | 2022-05-17 | 航天华盛源机电（苏州）有限公司 | Production method for shovel-tooth-shaped radiating fin and shovel-tooth machine |
| CN114505661B (en) * | 2022-02-15 | 2023-02-07 | 苏州市华盛源机电有限公司 | Production method for shovel-tooth-shaped radiating fin and shovel-tooth machine |
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