High-strength corrosion-resistant PTC (Positive Temperature Coefficient) electric heater with multilayer structure

Abstract

The utility model relates to the technical field of PTC (Positive Temperature Coefficient) electric heaters, and discloses a high-strength corrosion-resistant PTC electric heater with a multilayer structure, which solves the problems of low strength and poor corrosion resistance of the existing PTC electric heater, and comprises a PTC electric heater body and an insulation reinforcing assembly, the insulation reinforcing assembly is connected to the outer surface of the PTC electric heater body, and the insulation reinforcing assembly is connected to the outer surface of the PTC electric heater body. The PTC electric heater body is composed of a first heat dissipation assembly, a second heat dissipation assembly, a third heat dissipation assembly, a plurality of first PTC ceramic heating pieces and a plurality of second PTC ceramic heating pieces, and the surfaces of the first heat dissipation assembly, the second heat dissipation assembly and the third heat dissipation assembly are all provided with chromium aluminum nitride corrosion-resistant coatings. The insulation reinforcing assembly is composed of a high-strength insulation bottom plate, a high-strength insulation top plate, a first high-strength insulation end plate and a second high-strength insulation end plate. Through the PTC electric heater, the overall strength and the corrosion resistance can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to PTC electric heater technical field, concretely is multilayer structure high strength anticorrosion PTC electric heater. BACKGROUND

[0002] PTC heater has constant temperature heating characteristic, and its principle is that PTC heating sheet is heated and temperature is raised after being electrified to make resistance value rise into jump change area, and PTC heating sheet surface temperature will keep constant value, and the temperature is only related to PTC heating sheet's Curie temperature and applied voltage, and is basically independent of ambient temperature.Even in the case of abnormal operation, due to the regulating action of PTC element itself, the input power can be reduced very low, and still not to produce unexpected situation.

[0003] The existing multilayer structure PTC heater has the defects of low overall strength and poor corrosion resistance, and when the PTC heater is subjected to extrusion, deformation is prone to occur, and when corrosive substances exist in the use environment, the service life of the PTC heater will also be affected, therefore, the application provides a multilayer structure high strength anticorrosion PTC electric heater. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a multilayer structure high strength anticorrosion PTC electric heater, which effectively solves the problems of low strength and poor corrosion resistance of the existing PTC electric heater.

[0005] To achieve the above object, the utility model provides the following technical scheme: a multilayer structure high strength anticorrosion PTC electric heater, comprising a PTC electric heater body and an insulating reinforcing assembly, the insulating reinforcing assembly is fixedly connected to the outer surface of the PTC electric heater body, the PTC electric heater body is composed of a first heat dissipation assembly, a second heat dissipation assembly, a third heat dissipation assembly, a plurality of PTC ceramic heating sheets one and a plurality of PTC ceramic heating sheets two, the second heat dissipation assembly is located between the first heat dissipation assembly and the third heat dissipation assembly, the PTC ceramic heating sheet one is fixedly connected between the first heat dissipation assembly and the second heat dissipation assembly, the PTC ceramic heating sheet two is fixedly connected between the second heat dissipation assembly and the third heat dissipation assembly, the surfaces of the first heat dissipation assembly, the second heat dissipation assembly and the third heat dissipation assembly are all provided with a chromium aluminum nitride corrosion resistant coating, the insulating reinforcing assembly is composed of a high-strength insulating bottom plate, a high-strength insulating top plate, a high-strength insulating end plate one and a high-strength insulating end plate two, the high-strength insulating bottom plate, the high-strength insulating top plate, the high-strength insulating end plate one and the high-strength insulating end plate two are connected head to tail to form a frame type structure and are wrapped in the PTC electric heater body.

[0006] Preferably, one end of the first heat dissipation assembly, the second heat dissipation assembly and the third heat dissipation assembly is respectively provided with a first terminal block, a second terminal block and a third terminal block.

[0007] Preferably, the first heat dissipation assembly, the second heat dissipation assembly and the third heat dissipation assembly are all composed of aluminum alloy plates and corrugated aluminum alloy heat dissipation fins, and the corrugated aluminum alloy heat dissipation fins are welded and connected between two adjacent aluminum alloy plates.

[0008] Preferably, one end of the high-strength insulating end plate one is provided with three through grooves matched with the first wiring plate, the second wiring plate and the third wiring plate.

[0009] Preferably, a plurality of epoxy resin reinforcing arms are fixedly arranged between the high-strength insulating bottom plate and the high-strength insulating top plate.

[0010] Preferably, the high-strength insulating bottom plate, the high-strength insulating top plate, the high-strength insulating end plate one and the high-strength insulating end plate two are all composed of an epoxy resin plate and a nano aerogel thermal insulation layer.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] (1), in the work, through setting up by the first heat dissipation assembly, the second heat dissipation assembly, the third heat dissipation assembly, a plurality of PTC ceramic heating sheet one and a plurality of PTC ceramic heating sheet two constitute PTC electric heater body, can realize constant temperature heating, through setting up multilayer structure's PTC electric heater body, can improve heating efficiency, through setting up chromium aluminum nitride corrosion -resistant coating, can improve the overall corrosion resistance of PTC electric heater body;

[0013] (2), through setting up by the high-strength insulating bottom plate, the high-strength insulating top plate, the high-strength insulating end plate one and the high-strength insulating end plate two constitute insulating reinforcing assembly, can realize reinforcing to PTC electric heater body, improve its overall strength, and then improve the resistance to change ability, through setting up by the epoxy resin plate and the nano aerogel thermal insulation layer constitute high-strength insulating bottom plate, high-strength insulating top plate, high-strength insulating end plate one and high-strength insulating end plate two, can improve its strength and heat insulation performance. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation on the present application.

[0015] In the drawings:

[0016] Figure 1 It is the high-strength anti-corrosion PTC electric heater structure schematic view of multilayer structure of the utility model;

[0017] Figure 2 It is the PTC electric heater body structure schematic view of the utility model;

[0018] Figure 3 is a partial structure diagram of the PTC electric heater body of the utility model;

[0019] Figure 4 is a structure diagram of the corrugated aluminum alloy heat sink of the utility model;

[0020] Figure 5 is a structure diagram of the insulation reinforcing assembly of the utility model;

[0021] Figure 6 is a structure diagram of the high-strength insulation top plate of the utility model;

[0022] In the figure: 1, PTC electric heater body; 2, insulation reinforcing assembly; 3, first heat dissipation assembly; 4, second heat dissipation assembly; 5, third heat dissipation assembly; 6, PTC ceramic heating sheet one; 7, PTC ceramic heating sheet two; 8, chromium aluminum nitride corrosion-resistant coating; 9, high-strength insulation bottom plate; 10, high-strength insulation top plate; 11, high-strength insulation end plate one; 12, high-strength insulation end plate two; 13, first wiring board; 14, second wiring board; 15, third wiring board; 16, aluminum alloy plate; 17, corrugated aluminum alloy heat sink; 18, through groove; 19, epoxy resin reinforcing arm; 20, epoxy resin plate; 21, nano aerogel thermal insulation layer. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] By Figure 1 , Figure 2 , Figure 3 and Figure 5This invention discloses a multi-layered, high-strength, corrosion-resistant PTC electric heater, comprising a PTC electric heater body 1 and an insulation reinforcement component 2. The insulation reinforcement component 2 is fixedly connected to the outer surface of the PTC electric heater body 1. The PTC electric heater body 1 is composed of a first heat dissipation component 3, a second heat dissipation component 4, a third heat dissipation component 5, a plurality of PTC ceramic heating elements 6, and a plurality of PTC ceramic heating elements 7. The second heat dissipation component 4 is located between the first heat dissipation component 3 and the third heat dissipation component 5. The PTC ceramic heating elements 6 are fixedly connected to the first heat dissipation component 3 and the second heat dissipation component. Between 4, the PTC ceramic heating element 2 7 is fixedly connected between the second heat dissipation component 4 and the third heat dissipation component 5. The surfaces of the first heat dissipation component 3, the second heat dissipation component 4 and the third heat dissipation component 5 are all provided with a chromium aluminum nitride corrosion resistant coating 8. The insulation reinforcement component 2 is composed of a high-strength insulation base plate 9, a high-strength insulation top plate 10, a high-strength insulation end plate 11 and a high-strength insulation end plate 2 12. The high-strength insulation base plate 9, the high-strength insulation top plate 10, the high-strength insulation end plate 11 and the high-strength insulation end plate 2 12 are connected end to end to form a frame structure and cover the PTC electric heater body 1.

[0025] The multi-layered PTC electric heater body 1, consisting of a first heat dissipation component 3, a second heat dissipation component 4, a third heat dissipation component 5, a plurality of PTC ceramic heating elements 6 and a plurality of PTC ceramic heating elements 7, can improve heating efficiency. The high-strength insulating base plate 9, the high-strength insulating top plate 10, the high-strength insulating end plate 11 and the high-strength insulating end plate 2 12 cover the PTC electric heater body 1, thereby improving the overall strength of the PTC electric heater body 1.

[0026] Depend on Figures 2 to 4 As shown, one end of the first heat dissipation component 3, the second heat dissipation component 4 and the third heat dissipation component 5 is respectively provided with a first terminal block 13, a second terminal block 14 and a third terminal block 15. The first heat dissipation component 3, the second heat dissipation component 4 and the third heat dissipation component 5 are all composed of an aluminum alloy plate 16 and a corrugated aluminum alloy heat sink 17. The corrugated aluminum alloy heat sink 17 is welded between two adjacent aluminum alloy plates 16.

[0027] The first terminal block 13, the second terminal block 14, and the third terminal block 15 can realize the wiring function. When wiring, the first terminal block 13 and the third terminal block 15 are connected to the live wire, and the second terminal block 14 is connected to the neutral wire, or the first terminal block 13 and the third terminal block 15 are connected to the neutral wire, and the second terminal block 14 is connected to the live wire, thereby forming two paths, so that the PTC ceramic heating element 6 and the PTC ceramic heating element 7 are heated simultaneously. The corrugated aluminum alloy heat sink 17 can improve the strength and the air flow at the same time, so that it can cooperate with the fan to deliver hot air.

[0028] Depend on Figure 2、 Figure 5 and Figure 6 It is given that one end of the high-strength insulating end plate one 11 is provided with three through slots 18 matched with the first wiring board 13, the second wiring board 14 and the third wiring board 15, and a plurality of epoxy resin reinforcing arms 19 are fixedly arranged between the high-strength insulating bottom plate 9 and the high-strength insulating top plate 10, and the high-strength insulating bottom plate 9, the high-strength insulating top plate 10, the high-strength insulating end plate one 11 and the high-strength insulating end plate two 12 are all composed of an epoxy resin plate 20 and a nano aerogel thermal insulation layer 21;

[0029] The through slots 18 can install the first wiring board 13, the second wiring board 14 and the third wiring board 15, the epoxy resin reinforcing arms 19 can further improve the strength, and through the combined structure of the epoxy resin plate 20 and the nano aerogel thermal insulation layer 21, the strength, thermal insulation performance and insulation performance of the high-strength insulating bottom plate 9, the high-strength insulating top plate 10, the high-strength insulating end plate one 11 and the high-strength insulating end plate two 12 can be improved.

[0030] In work, by setting the PTC electric heater body composed of the first heat dissipation assembly, the second heat dissipation assembly, the third heat dissipation assembly, a plurality of PTC ceramic heating sheets one and a plurality of PTC ceramic heating sheets two, constant temperature heating can be realized, by setting the multi-layer structure of the PTC electric heater body, the heating efficiency can be improved, by setting the chromium aluminum nitride corrosion-resistant coating, the overall corrosion resistance of the PTC electric heater body can be improved; by setting the insulation reinforcing assembly composed of the high-strength insulating bottom plate, the high-strength insulating top plate, the high-strength insulating end plate one and the high-strength insulating end plate two, the PTC electric heater body can be reinforced to improve its overall strength, thereby improving the resistance to change ability, by setting the high-strength insulating bottom plate, the high-strength insulating top plate, the high-strength insulating end plate one and the high-strength insulating end plate two composed of the epoxy resin plate and the nano aerogel thermal insulation layer, its strength and thermal insulation performance can be improved.

Claims

1. A multilayer construction high strength corrosion resistant PTC electric heater comprising a PTC electric heater body (1) and an insulating reinforcement assembly (2), characterized in that: The insulating reinforcing assembly (2) is fixedly connected to the outer surface of the PTC electric heater body (1), the PTC electric heater body (1) is composed of a first heat dissipation assembly (3), a second heat dissipation assembly (4), a third heat dissipation assembly (5), a plurality of PTC ceramic heating pieces I (6) and a plurality of PTC ceramic heating pieces II (7), the second heat dissipation assembly (4) is located between the first heat dissipation assembly (3) and the third heat dissipation assembly (5), the PTC ceramic heating piece I (6) is fixedly connected between the first heat dissipation assembly (3) and the second heat dissipation assembly (4), the PTC ceramic heating piece II (7) is fixedly connected between the second heat dissipation assembly (4) and the third heat dissipation assembly (5), the surfaces of the first heat dissipation assembly (3), the second heat dissipation assembly (4) and the third heat dissipation assembly (5) are provided with a chromium aluminum nitride corrosion-resistant coating (8), the insulating reinforcing assembly (2) is composed of a high-strength insulating bottom plate (9), a high-strength insulating top plate (10), a high-strength insulating end plate I (11) and a high-strength insulating end plate II (12), the high-strength insulating bottom plate (9), the high-strength insulating top plate (10), the high-strength insulating end plate I (11) and the high-strength insulating end plate II (12) are connected end to end to form a frame structure and are wrapped around the PTC electric heater body (1).

2. The multilayer construction high strength corrosion resistant PTC electric heater of claim 1, wherein: The first heat dissipation assembly (3), the second heat dissipation assembly (4) and the third heat dissipation assembly (5) are respectively provided with a first wiring board (13), a second wiring board (14) and a third wiring board (15) at one end.

3. The multilayer construction high strength corrosion resistant PTC electric heater of claim 1, wherein: The first heat dissipation assembly (3), the second heat dissipation assembly (4) and the third heat dissipation assembly (5) are all composed of an aluminum alloy plate (16) and a corrugated aluminum alloy heat dissipation fin (17), the corrugated aluminum alloy heat dissipation fin (17) is welded and connected between two adjacent aluminum alloy plates (16).

4. The multilayer construction high strength corrosion resistant PTC electric heater of claim 2, wherein: The high-strength insulating end plate I (11) is provided with three through grooves (18) at one end, which are matched with the first wiring board (13), the second wiring board (14) and the third wiring board (15).

5. The multilayer construction high strength corrosion resistant PTC electric heater of claim 1, wherein: The high-strength insulating bottom plate (9) and the high-strength insulating top plate (10) are fixedly provided with a plurality of epoxy resin reinforcing arms (19).

6. The multilayer construction high strength corrosion resistant PTC electric heater of claim 1, wherein: The high-strength insulating bottom plate (9), the high-strength insulating top plate (10), the high-strength insulating end plate I (11) and the high-strength insulating end plate II (12) are all composed of an epoxy resin plate (20) and a nano aerogel thermal insulation layer (21).

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