CN219876160U

CN219876160U - PTC heater

Info

Publication number: CN219876160U
Application number: CN202321150512.7U
Authority: CN
Inventors: 杨瑞; 刘鑫; 孙雨; 王玮
Original assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Current assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-10-20
Anticipated expiration: 2033-05-11

Abstract

The utility model provides a PTC heater, which comprises a shell, a heating core body and a wrapping terminal for connecting a power supply, wherein the shell comprises an upper shell, a lower shell and left and right side walls, two ends of the upper shell are connected with the tops of the left and right side walls in an inserting manner and fixed through screws, two ends of the lower shell are connected with the bottoms of the left and right side walls in an inserting manner and fixed through screws, a frame for fixing the heating core body is enclosed by the upper shell, the lower shell and the left and right side walls, an upper shell thin table is arranged at the front and rear outer edge of the lower end of the upper shell, a lower shell thin table is arranged at the front and rear outer edge of the upper end of the lower shell, the top of the heating core body is fixed between the two upper shell thin tables, the bottom of the heating core body is fixed between the two lower shell thin tables, the heating core body comprises radiating strips and heating chips, the radiating strips and the heating chips are alternately arranged, the tops of the radiating strips are provided with electrode pins, the heating chips are electrically connected with the electrode pins through the radiating strips and the wrapping terminal in a pressing manner, and the upper shell is provided with a rectangular opening for the wrapping terminal to extend.

Description

PTC heater

Technical Field

The utility model relates to the field of heating devices, in particular to a PTC heater.

Background

The existing PTC heater can only be used for one of the devices of the automobile and the home appliances, and has the disadvantages of large weight and volume, low heat dissipation capacity, low heating power, short service life and difficult disassembly and assembly, so that a new PTC heater is necessary to be designed to improve the defects of the existing PTC heater.

Disclosure of Invention

The present utility model aims to overcome the drawbacks of the prior art and provides a PTC heater which solves at least some of the problems of the prior art.

The utility model is realized in the following way:

the utility model provides a PTC heater, which comprises a shell, a heating core body and wrapping terminals for connecting positive and negative electrodes of a power supply, wherein the shell comprises an upper shell, a lower shell and left and right side walls, two ends of the upper shell are connected with the tops of the left and right side walls in an inserting mode and fixed through screws, two ends of the lower shell are connected with the bottoms of the left and right side walls in an inserting mode and fixed through screws, the upper shell, the lower shell and the left and right side walls enclose a frame for fixing the heating core body, the front outer edge and the rear outer edge of the lower end of the upper shell are provided with an upper shell thin table, the front outer edge and the rear outer edge of the upper end of the lower shell are provided with a lower shell thin table, the top of the heating core body is fixed between the two upper shell thin tables, the bottom of the heating core body is fixed between the two lower shell thin tables, the heating core body comprises radiating strips and heating chips, the radiating strips and the heating chips are alternately arranged, the tops of the radiating strips are fixed between the radiating strips on two adjacent sides, the heating chips are electrically connected with the electrode pins through the radiating strips, the electrode pins are pressed together with the wrapping terminals, and rectangular openings for extending out of the wrapping terminals are formed on the upper shell.

Further, the heating chip is tightly attached between the two adjacent radiating strips through high-temperature glue.

Further, the radiating strip is provided with radiating corrugated fins, and the thickness of the radiating corrugated fins is 0.05mm.

Further, the space around the heat dissipation corrugated fin is a window.

Further, the front side and the rear side of the heating chip are sealed by single-component glue perpendicular to the discharging direction of the heat radiating strips and the heating chip.

Further, the left and right sides of the lower end of the upper shell are provided with an upper shell circular boss and an upper shell threaded hole, the left and right sides of the upper end of the lower shell are provided with a lower shell circular boss and a lower shell threaded hole, the upper and lower surfaces of the left and right side walls are provided with circular grooves and left and right side wall threaded holes, the upper shell circular boss and the lower shell circular boss are in plug-in fit with the corresponding left and right side wall circular grooves, and the upper shell threaded hole, the lower shell threaded hole and the corresponding left and right side wall threaded holes are fixedly connected through screws.

Further, metal spring plates for propping against the heating core body are arranged on the inner sides of the left side wall and the right side wall.

Further, a plurality of rectangular grooves for filling single-component glue are formed in the top of the lower shell.

The utility model has the following beneficial effects:

1. in the utility model, the outer sides of parallel layers of the heating chip in the vertical direction of the heating core body are sealed by single-component glue, the front and rear outer edges of the lower end of the upper shell are provided with the upper shell thin table, the front and rear outer edges of the upper end of the lower shell are provided with the lower shell thin table, the rectangular groove at the upper end of the lower shell is filled with the single-component glue, and the inner sides of the left and right side walls are provided with metal elastic sheets; the thickness of the radiating corrugated fins on the radiating strips is designed to be 0.05mm, so that the weight and the volume of the PTC heater can be effectively reduced; the heating chip is tightly attached between the heat dissipation strips at two adjacent sides, so that the heating power and the heat dissipation efficiency of the PTC heater can be effectively improved; the radiating corrugated fins and the windowing can greatly improve the radiating speed of the PTC heater; the upper shell, the lower shell and the left and right side walls are respectively matched through the circular boss and the circular groove in a positioning way and are fastened and connected through screw holes by screws, so that the PTC heater is very convenient to assemble and disassemble.

2. The existing PTC heater structure is characterized in that wiring pins (electrode pins) are hidden in a shell, and the connection of the wiring pins and a power supply is designed according to the assembly requirements of clients and fans and cannot be changed. The wiring pin of the utility model extends to the outside of the shell through the wrapping terminal, so that a user can freely wire according to the actual requirement. When the battery is used on an automobile, direct current is connected, the first electrode pin, the third electrode pin and the fifth electrode pin are used as positive electrodes, and the second electrode pin and the fourth electrode pin are used as negative electrodes; when the device is used on a household appliance, the first electrode pin, the third electrode pin and the fifth electrode pin are connected with a live wire, and the second electrode pin and the fourth electrode pin are connected with a zero line. Thus, the utility model can be used for the functions of automobiles and household appliances.

3. The PTC heater provided by the utility model can be used on a new energy automobile air-heating air conditioner and a household electric air-heating air conditioner, and has the advantages of small weight and volume, high heating power, fast heat dissipation, long service life and convenience in disassembly and assembly.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a PTC heater according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an upper housing according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a lower housing according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of left and right sidewalls according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of an exploded structure of a heating core according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a heat dissipation corrugated fin according to an embodiment of the present utility model;

FIG. 7 is an enlarged view of a portion of FIG. 6 provided in an embodiment of the present utility model;

fig. 8 is an assembly view of a PTC heater according to an embodiment of the present utility model;

fig. 9 is a second assembly view of the PTC heater according to the present utility model.

In the figure: 1. an upper housing; 11. the upper shell is provided with a circular boss; 12. an upper housing threaded hole; 13. a rectangular opening; 14. an upper shell thin table; 2. a lower housing; 21. a lower housing circular boss; 22. a lower housing threaded hole; 23. rectangular grooves; 24. a lower housing thin table; 3. left and right side walls; 31. a circular groove; 32. left and right sidewall threaded holes; 33. a metal spring plate; 4. heating the core; 41. a heat dissipation strip; 42. heating the chip; 43. a first electrode pin; 44. wrapping the terminal; 45. a single-component adhesive; 46. radiating corrugated fins; 47. the space around the heat dissipation corrugated fin; 48. a second electrode pin; 49. a third electrode pin; 50. a fourth electrode pin; 51. and a fifth electrode pin.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the utility model, unless otherwise indicated, the meaning of "a number" is two or more.

As shown in fig. 1 to 5, the portable PTC heater for automotive home appliances according to the present utility model is provided with a housing fixedly connected by an upper housing 1, a lower housing 2 and left and right side walls 3, and a heating core 4 is provided between the upper housing 1, the lower housing 2 and the left and right side walls 3.

The heating core 4 is composed of alternately arranged heat dissipation strips 41 and heating chips 42, the heating chips 42 are arranged between the heat dissipation strips 41 on two adjacent sides and are adhered and combined by high-temperature adhesives to form a heating body, the heating chips 42 are used for generating heat, the heat dissipation strips 41 are used for rapidly transmitting the heat, the outer sides of parallel layers of the heating chips 42 in the vertical direction of the heating core 4 are sealed by single-component adhesives 45, electrode pins (first electrode pins 43-fifth electrode pins 51) are arranged at the upper ends of the heat dissipation strips 41, and the electrode pins and the wrapping terminals 44 are pressed together and used for connecting positive and negative electrodes of a power supply to supply current for the heating core 4.

As shown in fig. 2, the left and right sides of the lower end of the upper shell 1 are provided with an upper shell circular boss 11 and an upper shell threaded hole 12, as shown in fig. 3, the left and right sides of the upper end of the lower shell 2 are provided with a lower shell circular boss 21 and a lower shell threaded hole 22, as shown in fig. 4, the upper and lower surfaces of the left and right side walls 3 are provided with a circular groove 31 and a left and right side wall threaded hole 32, and the upper shell 1, the lower shell 2 and the left and right side walls 3 are respectively positioned and matched through the upper shell circular boss 11, the lower shell circular boss 21 and the left and right side wall circular groove 31 and are fastened and connected through the upper shell threaded hole 12, the lower shell threaded hole 22 and the left and right side wall threaded hole 32 by screws.

As shown in fig. 2, the upper surface of the upper casing 1 is provided with a plurality of rectangular openings 13, a wrapping terminal 44 for pressing on an electrode pin at the upper end of the heating core 4 extends out of the upper casing 1 to be connected to the positive and negative poles of the power supply, and the front and rear outer edges of the lower end of the upper casing 1 are provided with upper casing thin platforms 14 for fastening the heating core 4.

As shown in fig. 4, metal spring pieces 33 are provided on the inner sides of the left and right side walls 3 for abutting and fixing the heating core 4 in the left and right directions.

As shown in fig. 3, a plurality of rectangular grooves 23 are formed in the upper end of the lower casing 2, single-component glue is filled in the rectangular grooves 23, the single-component glue protects and fixes the heating core 4, and lower casing thin platforms 24 are arranged on the front and rear outer edges of the upper end of the lower casing 2 and used for fastening the heating core 4. The upper end of the heating core 4 is sandwiched between the two upper housing thin stages 14, and the lower end of the heating core 4 is sandwiched between the two lower housing thin stages 24. The upper and lower housing thin stages 14, 24 also serve to locate the heater core 4.

As shown in fig. 5 to 7, the heat dissipating strip 41 is provided with heat dissipating corrugated fins 46, the thickness of the heat dissipating corrugated fins 46 is 0.05mm, the weight and the volume of the PTC are effectively reduced, the space 47 around the heat dissipating corrugated fins is a window, and a ventilation space is reserved for the heating core 4 at the window opening position for air to pass through the heating core 4 to take away heat generated by the heating core 4, so that the heat dissipating speed can be greatly improved.

The existing PTC heater structure is characterized in that wiring pins (electrode pins) are hidden in a shell, and the connection of the wiring pins and a power supply is designed according to the assembly requirements of clients and fans and cannot be changed. The wiring pin of the utility model extends to the outside of the shell through the wrapping terminal, so that a user can freely wire according to the actual requirement. When the battery is used on an automobile, direct current is connected, the first electrode pin 43, the third electrode pin 49 and the fifth electrode pin 51 serve as positive electrodes, and the second electrode pin 48 and the fourth electrode pin 50 serve as negative electrodes; when the electric power source is used on a household appliance, the first electrode pin 43, the third electrode pin 49 and the fifth electrode pin 51 are connected with a live wire, and the second electrode pin 48 and the fourth electrode pin 50 are connected with a zero wire. Thus, the utility model can be used for the functions of automobiles and household appliances.

As shown in fig. 5, in the present embodiment, two heat dissipation strips located at the left and right outermost sides of the heating core 4 are single heat dissipation strips, three heat dissipation strips located in the middle of the heating core 4 are double heat dissipation strips, the heating chips 42 and the heat dissipation strips are alternately arranged, four groups of heating chips are sandwiched between the five heat dissipation strips, each group includes three heating chips 42, and the three heating chips 42 are distributed at intervals along the vertical direction. The front and rear sides of each set of heater chips 42 are sealed with a single component adhesive 45. Electrode pins are arranged at the tops of the single radiating strip and the double radiating strips, the heating chip 42 is clung to the radiating strips at two adjacent sides, the heating chip 42 is electrically connected with the electrode pins through the radiating strips, and the electrode pins are electrically connected with a power supply through the wrapping terminals 44.

The utility model provides a universal portable PTC heater for automobiles and household appliances, which solves the problem that the existing PTC heater can only be used for one of automobiles or household appliances to work, can be used on a new energy automobile air-heating air conditioner and a household electric air-heating air conditioner, and has the advantages of small weight and volume, high heating power, quick heat dissipation, long service life and convenient disassembly and assembly; the utility model provides a universal portable PTC heater for automobile home appliances, which comprises an upper shell, a lower shell and left and right side walls, wherein a heating core body is arranged between the upper shell, the lower shell and the left and right side walls; the left side and the right side of the lower end of the upper shell are provided with an upper shell circular boss and a threaded hole, the left side and the right side of the upper end of the lower shell are provided with a lower shell circular boss and a threaded hole, the upper surface and the lower surface of the left side wall and the lower surface of the right side wall are provided with circular grooves and threaded holes, the upper shell, the lower shell and the left side wall are respectively positioned and matched through the circular bosses and the circular grooves, and are fastened and connected through the threaded holes by screws; the heating core body consists of radiating strips and heating chips which are alternately arranged, the heating chips are arranged between the radiating strips at two adjacent sides and are adhered and combined by high-temperature adhesives to form a heating body, the outer sides of parallel layers of the heating chips in the vertical direction of the heating core body are sealed by single-component adhesives, electrode pins are arranged at the upper ends of the radiating strips, and the electrode pins and the wrapping terminals are pressed together; the utility model can be widely applied to the heating field.

What is not described in detail in this specification is prior art known to those skilled in the art.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A PTC heater characterized in that: comprises a shell, a heating core body (4) and a wrapping terminal (44) for connecting the anode and the cathode of a power supply, wherein the shell comprises an upper shell (1), a lower shell (2) and left and right side walls (3), two ends of the upper shell (1) are connected with the tops of the left and right side walls (3) in an inserting way and fixed by screws, two ends of the lower shell (2) are connected with the bottoms of the left and right side walls (3) in an inserting way and fixed by screws, the upper shell (1), the lower shell (2) and the left and right side walls (3) are enclosed into a frame for fixing the heating core body (4), an upper shell thin table (14) is arranged on the front and rear outer edges of the lower end of the upper shell, the front and rear outer edges of the upper end of the lower shell are provided with lower shell thin tables (24), the top of a heating core body (4) is fixed between two upper shell thin tables (14), the bottom of the heating core body (4) is fixed between two lower shell thin tables (24), the heating core body (4) comprises radiating strips (41) and heating chips (42), the radiating strips (41) and the heating chips (42) are alternately arranged, electrode pins are arranged at the top of the radiating strips (41), the heating chips (42) are fixed between the radiating strips (41) at two adjacent sides, the heating chips (42) are electrically connected with the electrode pins through the radiating strips (41), the electrode pins and the wrapping terminals (44) are pressed together, the upper shell (1) is provided with a rectangular opening (13) for the extension of the wrapping terminal (44).

2. A PTC heater according to claim 1, wherein: the heating chip (42) is tightly attached between the two adjacent radiating strips (41) through high-temperature glue.

3. A PTC heater according to claim 1, wherein: the radiating strip (41) is provided with radiating corrugated fins (46), and the thickness of the radiating corrugated fins (46) is 0.05mm.

4. A PTC heater according to claim 3, wherein: the space (47) around the heat dissipation corrugated fin is a window.

5. A PTC heater according to claim 1, wherein: and the front side and the rear side of the heating chip (42) are sealed by adopting single-component glue (45) perpendicular to the discharging directions of the radiating strips (41) and the heating chip (42).

6. A PTC heater according to claim 1, wherein: the left and right sides of the lower end of the upper shell (1) are provided with an upper shell circular boss (11) and an upper shell threaded hole (12), the left and right sides of the upper end of the lower shell (2) are provided with a lower shell circular boss (21) and a lower shell threaded hole (22), the upper and lower surfaces of the left and right side walls (3) are provided with circular grooves (31) and left and right side wall threaded holes (32), the upper shell circular boss (11), the lower shell circular boss (21) are in plug-in fit with the corresponding left and right side wall circular grooves (31), and the upper shell threaded hole (12), the lower shell threaded hole (22) and the corresponding left and right side wall threaded holes (32) are fixedly connected through screws.

7. A PTC heater according to claim 1, wherein: the inner sides of the left side wall and the right side wall (3) are provided with metal spring plates (33) for propping against the heating core body (4).

8. A PTC heater according to claim 1, wherein: a plurality of rectangular grooves (23) for filling single-component glue are formed in the top of the lower shell (2).