CN216650014U - Insulation reinforced PTC air heating heater - Google Patents
Insulation reinforced PTC air heating heater Download PDFInfo
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- CN216650014U CN216650014U CN202122671427.2U CN202122671427U CN216650014U CN 216650014 U CN216650014 U CN 216650014U CN 202122671427 U CN202122671427 U CN 202122671427U CN 216650014 U CN216650014 U CN 216650014U
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Abstract
The utility model relates to an insulation enhanced PTC air heating heater, comprising: the heating core body comprises a PTC ceramic element, a metal electrode and an insulating layer structure, wherein the insulating layer structure wraps the peripheries of the PTC ceramic element and the metal electrode and is used for insulation and heat conduction; the insulating layer structure comprises at least two insulating layers; and the aluminum foil structure is arranged between the two adjacent layers of insulating layers and is not in contact with the PTC ceramic element and the metal electrode. Through the arrangement, the problems that the insulating layer is easy to puncture and insulation failure and potential safety hazards are caused due to the fact that impurity particles are easy to be drawn into the insulating layer clamped on the heating core body in the conventional PTC air-heating heater can be solved.
Description
Technical Field
The utility model relates to the technical field of PTC (positive temperature coefficient) air-heating heaters, in particular to an insulation reinforced PTC air-heating heater.
Background
Due to the special positive temperature coefficient resistance temperature characteristic of the PTC thermal sensitive ceramic element, the PTC air heating heater product is widely applied to heating (such as air conditioner auxiliary heating, warm air blower, bath heater and the like) in the field of household appliances, defrosting or heating functions of traditional fuel automobiles, heating functions in new energy automobiles, or heating functions of batteries.
In the existing air-warming heater for air conditioners, a heating core body is formed by wrapping an insulating layer and then is plugged into an aluminum tube, and then the heating core body and the aluminum tube are pressed together by a device such as an oil press or a hydraulic press, so that the integral PTC air-warming heater is manufactured and used for heating and heat conduction.
When the aluminum pipe is wrapped with the insulating layer, there is a risk that impurities such as fine particles in the air, chips at the edge of the PTC ceramic element, or impurity particles inside the aluminum pipe (for example, aluminum chips generated when the aluminum pipe is cut) are easily involved in and trapped in the insulating layer.
Therefore, in the pressing process, when the PTC air heating heater is wholly stressed by pressure, or in the product transportation vibration process, the power on/off process in various practical stress scenes such as expansion with heat and contraction with cold, the insulating layer is very easy to puncture by the impurity particles, so that the insulating property is completely damaged, and great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide an insulation enhanced PTC air-heating heater to solve the problems that impurity particles are easily involved in an insulation layer clamped on a heating core body in the conventional PTC air-heating heater, so that the insulation layer is easily punctured, and insulation failure and potential safety hazards are caused.
In order to achieve one of the above objects of the present invention, an embodiment of the present invention provides an insulation-reinforced PTC air-heating heater, including:
the heating core body comprises a PTC ceramic element, a metal electrode and an insulating layer structure, wherein the insulating layer structure is wrapped on the peripheries of the PTC ceramic element and the metal electrode and used for insulation and heat conduction; the insulating layer structure comprises at least two insulating layers;
and the aluminum foil structure is arranged between two adjacent layers of insulating layers and is not in contact with the PTC ceramic element and the metal electrode.
In a further improvement of an embodiment of the present invention, the insulating layer is a polyimide film.
As a further improvement of an embodiment of the present invention, the aluminum foil structure includes at least two aluminum foil sheets respectively located at two sides of the heating core.
As a further improvement of an embodiment of the present invention, the aluminum foil sheet and the outermost insulating layer are bonded to each other.
As a further improvement of an embodiment of the utility model, the insulation enhanced PTC air-warming heater further comprises an aluminum tube and an aluminum radiator; the aluminum pipe is sleeved outside the heating core body; the aluminum radiator is connected with the aluminum pipe and used for radiating.
As a further improvement of an embodiment of the present invention, the aluminum pipe is attached to the heating core seamlessly.
As a further improvement of an embodiment of the present invention, the aluminum heat sink is an aluminum corrugated tooth-shaped heat dissipation aluminum strip, the aluminum corrugated tooth-shaped heat dissipation aluminum strip is bonded to the outer side of the aluminum pipe, and the aluminum corrugated tooth-shaped heat dissipation aluminum strip is brazed to aluminum sheets on both sides of the heat dissipation aluminum strip.
As a further improvement of an embodiment of the present invention, the aluminum heat sink is a heat dissipation blade attached to an outer side of the aluminum pipe.
As a further improvement of an embodiment of the present invention, the heat dissipation blade and the aluminum pipe are integrally formed.
As a further improvement of an embodiment of the present invention, the insulation enhanced PTC air-warming heater is an air-conditioning air-warming heater.
Compared with the prior art, the utility model has the beneficial effects that:
the PTC air-heating heater comprises a heating core body; the heating core body is internally provided with a PTC ceramic element and a metal electrode which are used for electrifying, heating and heat conducting; the outer sides of the PTC ceramic element and the metal electrode are wrapped with insulating layer structures for insulation and heat conduction;
in order to prevent impurity particles involved in the insulating layer from puncturing the insulating layer structure, the aluminum foil structure is additionally arranged between the two adjacent insulating layers to effectively absorb and block the impurity particles, so that the whole insulating layer structure is prevented from being punctured, the problem of insulation failure of the PTC air-heated heater is avoided, and the overall safety performance of the PTC air-heated heater can be greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of an expanded structure of a heating core and an aluminum foil structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a heating core in an embodiment of the utility model.
Wherein reference numerals are referred to in the figures as follows:
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and completely with reference to the following detailed description of the utility model and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 2, an embodiment of the present invention provides an insulation enhanced PTC air heating heater, including:
the heating core body comprises a PTC ceramic element, a metal electrode 2 and an insulating layer structure 3, wherein the insulating layer structure 3 is wrapped on the peripheries of the PTC ceramic element and the metal electrode 2 and is used for insulation and heat conduction; the insulating layer structure 3 comprises at least two insulating layers 31;
and an aluminum foil structure 4 which is arranged between two adjacent layers of insulating layers and is not in contact with both the PTC ceramic element and the metal electrode 2.
Specifically, the PTC air heating heater comprises a heating core body; the heating core body is internally provided with a PTC ceramic element and a metal electrode 2 which are used for electrifying, heating and heat conducting; the PTC ceramic element and the metal electrode 2 are wrapped with an insulating layer structure 3 for insulation and heat conduction;
for the impurity particle that prevents to be drawn into insulating layer 31 punctures insulating layer structure 3, increase aluminium foil structure 4 between adjacent two-layer insulating layer 31 to absorb and block impurity particle, prevent that insulating layer structure 3 is whole to be punctured, thereby avoid appearing PTC hot-air heating heater insulation failure problem, can greatly promote PTC hot-air heating heater's whole security performance.
Further, the insulating layer 31 is a polyimide film.
In practical use, the insulating layer 31 is generally made of a polyimide film having good thermal conductivity and insulation properties.
The polyimide film directly wraps the PTC ceramic element and the metal electrode 2 sheet used for conducting, and then is plugged into the aluminum tube to be continuously processed to form the PTC air heating heater.
Further, the aluminum foil structure 4 comprises at least two aluminum foils 41 respectively located at two sides of the heating core.
In actual use, two sides of the heating core body are stress key areas which are easy to be pressed; the aluminum foils 41 are respectively arranged on the upper side and the lower side of the heating core body, and can absorb and block impurity particles at the maximum efficiency by utilizing the good toughness and ductility of the aluminum foils, so that the insulating layer structure 3 is protected and prevented from being punctured, and at the moment, the usage amount of the aluminum foils 41 is small, the cost is low, and the protection efficiency is highest.
If impurity particles are not detected in the whole detection process of the product and only part of the impurity particles puncture the insulating paper, the PTC air-heated heater product serving as a defective product is easy to cause serious stress on the upper side and the lower side of the heating core body in the transportation and vibration process; or when the heating core is normally used, the power is switched on and off to cause the effects of expansion with heat and contraction with cold, so that the upper side and the lower side of the heating core body with the largest area are obviously stressed, and therefore, the insulating paper is very easy to be completely punctured, and the insulating performance is completely damaged.
Through the aluminum foil structure of above-mentioned setting, above-mentioned bad phenomenon can be avoided to the at utmost.
Further, the aluminum foil 41 and the outermost insulating layer 31 are bonded to each other.
In practical use, the two aluminum foils 41 are respectively located inside the outermost insulation layers 31 on the upper and lower sides of the heating core, so as to not only perform the insulation reinforcing function, but also perform the structure reinforcing function.
Furthermore, the insulation reinforced PTC air heating heater also comprises an aluminum pipe and an aluminum radiator; the aluminum pipe is sleeved outside the heating core body; the aluminum radiator is connected with the aluminum pipe and used for radiating.
In the actual production process, the outer side of the aluminum pipe is also tightly attached with an aluminum radiator with good heat dissipation.
Therefore, after the PTC air heating heater is electrified, heat generated by the PTC ceramic element is transmitted out through the metal electrode 2, the insulating layer 31, the aluminum pipe and the aluminum radiator to heat the outside.
Furthermore, the aluminum pipe is seamlessly attached to the heating core.
In the actual production process, after the heating core penetrates into the corresponding aluminum pipe, the aluminum pipe is subjected to pressing operation through pressing devices such as an oil press and the like, so that the aluminum pipe is attached to the heating core, and the heat conducting performance is improved.
In the pressing process, the gap between the aluminum pipe and the heating core body is continuously reduced, so that the impurity particles are finally propped against the insulating paper, and the insulating layer 31 is easy to puncture when being pressed, so that the insulating and pressure-resistant properties of the heater are caused to lose efficacy; this problem can be solved by the above-described aluminum foil structure.
Further, the aluminum radiator is an aluminum corrugated tooth type heat dissipation aluminum strip, the aluminum corrugated tooth type heat dissipation aluminum strip is bonded to the outer side of the aluminum pipe, and the aluminum corrugated tooth type heat dissipation aluminum strip is brazed on aluminum sheets on two sides of the heat dissipation aluminum strip.
Further, the aluminum radiator is a heat dissipation shovel sheet and is connected to the outer side of the aluminum pipe.
Furthermore, the heat dissipation shovel sheet and the aluminum pipe are of an integrated structure.
In practical use, a heat dissipation aluminum strip can be bonded on the outer side of the aluminum pipe to manufacture an aluminum radiator;
or, the aluminum radiator is made into a shovel sheet structure integrated with the aluminum pipe.
Furthermore, the insulation enhanced PTC air heating heater is an air conditioning air heating heater.
In the specific embodiment, two pieces of aluminum foils are additionally arranged on the structure of the original air-conditioning heater to form an insulation reinforced PTC air-heating heater;
specifically, when the PTC ceramic element and the metal electrode plate for conducting electricity are wrapped by insulating paper, two aluminum foils are placed and clamped, so that the two aluminum foils are respectively placed between two layers of insulating paper, but are not directly contacted with the PTC ceramic plate and the metal electrode plate;
after the wrapping is finished, the heating core body and the aluminum pipe are subjected to pressing operation through an oil press or a hydraulic press; therefore, a small amount of impurity particles can be absorbed and blocked by the aluminum foil, and the insulating layer cannot be punctured;
meanwhile, the aluminum foil belongs to metal, has high strength and higher ductility and toughness, is not easy to puncture, and can protect the insulating paper on the other side of the aluminum foil from being punctured;
therefore, the serious safety problem that insulation paper in the PTC air heating heater is easy to be punctured by impurities to cause poor insulation can be solved, and the overall safety and reliability of the heater are improved.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. An insulation reinforced PTC air heating heater is characterized by comprising:
the heating core body comprises a PTC ceramic element, a metal electrode and an insulating layer structure, wherein the insulating layer structure is wrapped on the peripheries of the PTC ceramic element and the metal electrode and used for insulation and heat conduction; the insulating layer structure comprises at least two insulating layers;
and the aluminum foil structure is arranged between the two adjacent layers of insulating layers and is not in contact with the PTC ceramic element and the metal electrode.
2. The insulation reinforced PTC air-heating heater according to claim 1, wherein the insulation layer is a polyimide film.
3. The insulation reinforced PTC air-heating heater according to claim 2, wherein the aluminum foil structure comprises at least two aluminum foils, which are respectively disposed at both sides of the heating core.
4. The insulation reinforced PTC air-heating heater according to claim 3, wherein the aluminum foil is attached to the outermost insulation layer.
5. The insulation reinforced PTC air-heating heater according to claim 2 or 4, wherein the insulation reinforced PTC air-heating heater further comprises an aluminum tube, an aluminum heat sink; the aluminum pipe is sleeved outside the heating core body; the aluminum radiator is connected with the aluminum pipe and used for radiating.
6. The insulated reinforced PTC air-heated heater according to claim 5, wherein the aluminum tube is seamlessly attached to the heating core.
7. The insulation reinforced PTC air heating heater according to claim 6, wherein the aluminum radiator is an aluminum corrugated fin type heat dissipating aluminum strip bonded to the outside of the aluminum pipe, and the aluminum corrugated fin type heat dissipating aluminum strip is brazed to aluminum sheets on both sides of the heat dissipating aluminum strip.
8. The insulation reinforced PTC air-heating heater according to claim 6, wherein the aluminum heat sink is a fin attached to the outside of the aluminum tube.
9. The insulation reinforced PTC air-heating heater according to claim 8, wherein the heat-dissipating blade and the aluminum pipe are integrally formed.
10. The insulation reinforced PTC air-heating heater according to claim 1, wherein the insulation reinforced PTC air-heating heater is an air-conditioning air-heating heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122671427.2U CN216650014U (en) | 2021-11-03 | 2021-11-03 | Insulation reinforced PTC air heating heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122671427.2U CN216650014U (en) | 2021-11-03 | 2021-11-03 | Insulation reinforced PTC air heating heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216650014U true CN216650014U (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122671427.2U Active CN216650014U (en) | 2021-11-03 | 2021-11-03 | Insulation reinforced PTC air heating heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216650014U (en) |
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2021
- 2021-11-03 CN CN202122671427.2U patent/CN216650014U/en active Active
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