CN219421060U

CN219421060U - Heating core structure of PTC heater

Info

Publication number: CN219421060U
Application number: CN202320422289.0U
Authority: CN
Inventors: 程超; 程卫国
Original assignee: Jiangsu Shazi Electrical Appliance Co ltd
Current assignee: Jiangsu Shazi Electrical Appliance Co ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-07-25
Anticipated expiration: 2033-03-08

Abstract

The utility model discloses a heating core structure of a PTC heater, which comprises a base connecting unit, wherein the left side and the right side of the upper end of the base connecting unit are fixedly provided with heating core devices, the left end and the right end of each heating core device are fixedly provided with radiating fin devices, the device solves the problem that the heat conductivity of the current PTC heater is not ideal, by arranging the radiating fin devices, heat generated after heating can be radiated, a part of the heat can be radiated by a protecting element through arranging a heat conducting block, a heat radiating plate, a heat conducting groove and a heat conducting pipe, and the heat can be radiated further through the heat radiating fin, a heat conducting hole and a heat radiating hole, so that the heat radiating efficiency is accelerated, the heat conducting effect is ideal, when the element is overheated, overheat protection can be provided to further protect the element, the reliability is ideal, and the heat conducting element and the heat radiating element can be fully contacted through arranging a silica gel coating, so that the heat conducting efficiency is improved.

Description

Heating core structure of PTC heater

Technical Field

The utility model belongs to the technical direction of PTC heaters, and particularly relates to a heating core structure of a PTC heater.

Background

With the continuous advancement of PTC heaters, more and more PTC heaters have limited surface temperature rise during dry heating, but still can be tens to hundreds of degrees higher than during normal ventilation operation, so that materials with poor temperature resistance such as surrounding plastics can be affected, and therefore, the PTC heaters generally adopt measures of protecting a circuit by an overheat protection unit.

Such as Chinese patent publication No.: CN209897286U is a heating core structure of PTC heater, which belongs to the technical field of electric heating device. Comprises a heat conduction pipe; the assembly is arranged in the heat conduction pipe cavity and comprises a PTC ceramic thermistor, a first electrode, a second electrode and an insulating film, wherein the PTC ceramic thermistor is arranged between one opposite sides of the first electrode and the second electrode, one ends of the first electrode and the second electrode extend out of the heat conduction pipe cavity to be respectively formed into a first electrode plate and a second electrode plate to be electrically connected, the insulating film is coated outside the first electrode and the second electrode together, and two ends of the heat conduction pipe cavity are sealed by sealant, and the assembly is characterized in that: one end or two ends of the heat conduction pipe cavity are provided with capillary tubes, one end of each capillary tube is positioned in the heat conduction pipe cavity, and the other end of each capillary tube extends out of the heat conduction pipe cavity through the sealant and is communicated with the outside. The PTC ceramic thermistor can be prevented from forming an oxygen deficiency state due to sealing oxygen deficiency in the whole heat conversion process after being electrified and heated, and the potential barrier structure of the PTC ceramic thermistor is prevented from being damaged due to the fact that reducing gas is retained in the heat conduction pipe cavity and the concentration is increased.

The existing protection unit structure is not strong in reliability or poor in heat conductivity, and the phenomenon is a problem to be solved urgently by the person skilled in the art.

Disclosure of Invention

The utility model aims at solving the problems in the background technology by aiming at the heating core structure of the PTC heater of the prior device.

In order to solve the technical problems, the utility model provides the following technical scheme: the PTC heater heating core structure comprises a base connecting unit, wherein the heating core device is fixedly installed on the left side and the right side of the upper end of the base connecting unit, radiating fin devices are fixedly installed on the left end and the right end of the heating core device, and protection units are fixedly installed on the lower ends of the front outer wall and the rear outer wall of the radiating fin devices.

The heating core device comprises a PT heating sheet, wherein the PT heating sheet is fixedly connected to the upper end of the base connecting unit, a silica gel coating is fixedly connected to the outer surface of the PT heating sheet, and an insulating film is fixedly connected to the outer wall of the silica gel coating.

The radiating fin device comprises a heat conducting component, wherein the heat conducting component is fixedly arranged at two ends of the outer surface of the insulating film, and one side of the heat conducting component is fixedly provided with a radiating component.

The utility model further discloses that the base connecting unit comprises a base, a wiring terminal is arranged on the left side of the base, a first connecting wire is fixedly connected to the inside of the wiring terminal, and a supporting seat is fixedly connected to the top of the base.

The utility model further discloses that the PT heating sheet is internally provided with a heating core installation cavity, and the heating core installation cavity is internally fixedly connected with a heating core.

The utility model further discloses that the heat conducting component comprises a heat conducting block, one side of the heat conducting block is fixedly connected with two ends of the outer surface of the insulating film, the outer walls of the front side and the rear side of the heat conducting block are fixedly connected with heat radiating plates, the other side of the heat conducting block is provided with heat conducting grooves, and the upper parts of the heat conducting grooves are fixedly connected with heat conducting pipes.

The utility model further discloses that the heat dissipation assembly comprises heat dissipation fins, wherein the heat dissipation fins are fixedly connected to the inside of the heat conduction groove, the other ends of the heat conduction pipes are fixedly connected to the upper parts of the heat dissipation fins, the heat dissipation fins are provided with heat conduction holes, and the heat dissipation fins are provided with heat dissipation holes.

The utility model further discloses that the protection unit comprises grounding plates, wherein the grounding plates are fixedly connected to the outer walls of the radiating fins, a second connecting wire is fixedly connected to the left side of each grounding plate, and the second connecting wire and the first connecting wire are wound into a group.

Compared with the prior art, the utility model has the following beneficial effects: in the present utility model, the number of the components,

(1) The heat radiating fin device is arranged, the heat conducting assembly and the heat radiating assembly are arranged, so that heat generated after heating can be radiated, the element is protected, part of the heat can be radiated through the arranged heat conducting block, the heat radiating plate, the heat conducting groove and the heat conducting pipe, and further heat is radiated through the heat radiating fin, the heat conducting hole and the heat radiating hole, so that the heat radiating efficiency is improved, the heat conducting effect is ideal, and when the element is overheated, overheat protection can be provided, and then the element is better protected, and the reliability is ideal;

(2) Through being provided with the core device that generates heat, PTC that its installed generates heat piece, silica gel coating, insulating film, the core installation cavity that generates heat and the core that generates heat, can make heat conduction element and radiating element fully contact through the silica gel coating that sets up, and then improve heat conduction efficiency, can prevent inside electric leakage through the insulating film that sets up, also can prevent electric leakage at radiating fin's external mounting earthing piece in addition, improves protectiveness.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of a portion of FIG. 1 in accordance with the present utility model;

FIG. 3 is an enlarged view of the utility model of FIG. 2B;

fig. 4 is an enlarged view of the utility model of fig. 2 a.

In the figure: 1. a base connection unit; 2. a heating core device; 3. a heat radiating fin device; 4. a protection unit; 11. a base; 12. a terminal; 13. a support base; 14. a first connecting line; 21. PTC heating sheet; 22. a silica gel coating; 23. an insulating film; a1, a heating core installation cavity; a2, heating cores; 31. a heat conducting component; 32. a heat dissipation assembly; b1, a heat conduction block; b2, a heat dissipation plate; b3, a heat conduction groove; b4, a heat conduction pipe; c1, radiating fins; c2, heat conduction holes; c3, radiating holes; 41. a grounding plate; 42. and a second connecting wire.

Detailed Description

The technical scheme of the present utility model is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. 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.

Referring to fig. 1-4, the present utility model provides the following technical solutions: the PTC heater heating core structure includes, base connecting unit 1, the equal fixed mounting in upper end left and right sides of base connecting unit 1 has heating core device 2, through being provided with heating core device 2, PTC heating plate 21 of its installation, silica gel coating 22, insulating film 23, heating core installation cavity a1 and heating core a2, can make heat conduction element and radiating element fully contact through silica gel coating 22 that sets up, and then improve heat conduction efficiency, can prevent inside electric leakage through insulating film 23 that sets up, the equal fixed mounting in both ends of heating core device 2 has radiating fin device 3, through being provided with radiating fin device 3, the heat conduction subassembly 31 and the radiating subassembly 32 of its installation, make can dispel the heat with the heat that produces after the heat generation, the protection element, through the heat conduction piece b1 that sets up, heating panel b2, heat conduction groove b3 and heat conduction pipe b4 can give off some heat, and make further radiating efficiency through radiating fin c1, heat conduction hole c2 and radiating hole c3, the heat conduction effect is ideal, when the element is crossed can provide overheat protection and then better protection element, the equal fixed under the radiating fin device 3, the equal fixed mounting of the outer wall of the front end of radiating fin device 4 has the ideal protection.

In this embodiment, the base connection unit 1 includes a base 11, a terminal 12 is disposed on the left side of the base 11, a first connection line 14 is fixedly connected to the inside of the terminal 12, and a supporting base 13 is fixedly connected to the top of the base 11.

Preferably, the heating core device 2 comprises a PTC heating sheet 21, the PTC heating sheet 21 is fixedly connected to the upper end of the base connecting unit 1, a silica gel coating 22 is fixedly connected to the outer surface of the PTC heating sheet 21, an insulating film 23 is fixedly connected to the outer wall of the silica gel coating 22, a heating core installation cavity a1 is arranged in the PTC heating sheet 21, a heating core a2 is fixedly connected to the inner part of the heating core installation cavity a1, the heating core device 2 is arranged, the PTC heating sheet 21, the silica gel coating 22, the insulating film 23, the heating core installation cavity a1 and the heating core a2 are installed, the heat conducting element can be fully contacted with the heat radiating element through the arranged silica gel coating 22, heat conducting efficiency is improved, and internal electric leakage can be prevented through the arranged insulating film 23.

Further alternatively, the radiating fin device 3 includes the heat conduction subassembly 31, the equal fixed mounting of heat conduction subassembly 31 is at the surface both ends of insulating film 23, the equal fixed mounting of one side of heat conduction subassembly 31 has the radiator unit 32, the heat conduction subassembly 31 includes heat conduction piece b1, the equal fixed connection in one side of heat conduction piece b1 is at the surface both ends of insulating film 23, all fixedly connected with heating panel b2 on the front and back side outer wall of heat conduction piece b1, heat conduction groove b3 has all been seted up to the opposite side of heat conduction piece b1, the equal fixedly connected with heat pipe b4 of top of heat conduction groove b3, the radiator unit 32 includes radiating fin c1, radiating fin c1 all fixed connection is in the inside of heat conduction groove b3, and the equal fixed connection in the other end of heat pipe b4 is in radiating fin c1 top, the heat conduction hole c2 has all been seted up on the radiating fin c1, through being provided with radiating fin device 3, the equal fixedly connected with heating panel b2 on its installed heat conduction subassembly 31 and the heat dissipation piece 32, make the heat that produces after will generate heat carry out, protection element, through the heat piece b1, heating panel b2, radiating fin b3 and heat dissipation element and heat dissipation part 2 are further provided for, the heat dissipation effect is better, and radiating element is more ideal, and radiating element is further heat-radiating effect is able to be provided.

Further, the protection unit 4 includes a grounding plate 41, the grounding plates 41 are fixedly connected to the outer wall of the heat dissipation fin c1, a second connecting wire 42 is fixedly connected to the left side of the grounding plate 41, the second connecting wire 42 and the first connecting wire 14 are wound into a group, and the grounding plates 41 are mounted outside the heat dissipation fin c1 to prevent electric leakage and improve protection.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

PTC heater heating core structure, including base connecting unit (1), its characterized in that: the heating core device (2) is fixedly arranged on the left side and the right side of the upper end of the base connecting unit (1), the radiating fin device (3) is fixedly arranged on the left end and the right end of the heating core device (2), and the protection units (4) are fixedly arranged on the lower ends of the front outer wall and the rear outer wall of the radiating fin device (3);

the heating core device (2) comprises PTC heating sheets (21), wherein the PTC heating sheets (21) are fixedly connected to the upper end of the base connecting unit (1), silica gel coatings (22) are fixedly connected to the outer surfaces of the PTC heating sheets (21), and insulating films (23) are fixedly connected to the outer walls of the silica gel coatings (22);

the radiating fin device (3) comprises a heat conducting component (31), wherein the heat conducting component (31) is fixedly arranged at two ends of the outer surface of the insulating film (23), and one side of the heat conducting component (31) is fixedly provided with a heat radiating component (32).
2. A PTC heater core structure according to claim 1, wherein: the base connecting unit (1) comprises a base (11), a wiring terminal (12) is arranged on the left side of the base (11), a first connecting wire (14) is fixedly connected to the inside of the wiring terminal (12), and a supporting seat (13) is fixedly connected to the top of the base (11).
3. A PTC heater core structure according to claim 2, wherein: the PTC heating piece (21) is internally provided with a heating core installation cavity (a 1), and a heating core (a 2) is fixedly connected in the heating core installation cavity (a 1).
4. A PTC heater core structure according to claim 3, wherein: the heat conduction assembly (31) comprises a heat conduction block (b 1), one side of the heat conduction block (b 1) is fixedly connected with two ends of the outer surface of the insulating film (23), heat dissipation plates (b 2) are fixedly connected to the outer walls of the front side and the rear side of the heat conduction block (b 1), heat conduction grooves (b 3) are formed in the other side of the heat conduction block (b 1), and heat conduction pipes (b 4) are fixedly connected to the upper sides of the heat conduction grooves (b 3).
5. A PTC heater core structure according to claim 4, wherein: the heat dissipation assembly (32) comprises heat dissipation fins (c 1), wherein the heat dissipation fins (c 1) are fixedly connected to the inside of the heat conduction groove (b 3), the other ends of the heat conduction pipes (b 4) are fixedly connected to the upper parts of the heat dissipation fins (c 1), heat conduction holes (c 2) are formed in the heat dissipation fins (c 1), and heat dissipation holes (c 3) are formed in the heat dissipation fins (c 1).
6. A PTC heater core structure according to claim 5, wherein: the protection unit (4) comprises grounding plates (41), and the grounding plates (41) are fixedly connected to the outer wall of the radiating fin (c 1).
7. A PTC heater core structure according to claim 6, wherein: the left side of the grounding piece (41) is fixedly connected with a second connecting wire (42), and the second connecting wire (42) and the first connecting wire (14) are wound into a group.