Waterproof PTC electric heater

Abstract

The utility model relates to the technical field of electric heaters, and discloses a waterproof PTC electric heater which comprises a frame body, a frame body, a heater, a cover body and heat insulation cotton, the frame body is located in the frame body, the cover body is located on the upper portion of the frame body, the heater is located in the frame body, and the heat insulation cotton is located on the side, opposite to the frame body, of the frame body. A wire inlet seat is arranged on one side of the frame body, a sealing gasket is arranged in the wire inlet seat, wire grooves are formed in the upper portion of the sealing gasket, silicon rubber is arranged at the bottom of the cover body, and the position of the silicon rubber is matched with the position of the sealing gasket. The upper portion of the sealing gasket can be better attached, so that a cable can be better sealed, a cable inlet of the cable can be better sealed, the cable inlet of the device can be effectively sealed, and external liquid is prevented from permeating into the frame body from the cable inlet.

Description

Technical Field

[0001] This utility model belongs to the field of electric heater technology, specifically a waterproof PTC electric heater. Background Technology

[0002] Electric heaters are a popular type of electric heating equipment internationally. They are used for heating, maintaining, and warming flowing liquid and gaseous media. When the heating medium passes through the heating chamber of the electric heater under pressure, the enormous heat generated by the heating element is uniformly carried away using the principles of fluid thermodynamics, ensuring that the temperature of the heated medium meets the user's process requirements.

[0003] New energy vehicles typically use PTC electric heaters to heat the water tank. However, when the PTC electric heater is installed inside the vehicle, liquid can easily seep into the interior of the PTC electric heater through the wiring port when the vehicle passes through puddles, causing damage to the PTC electric heater. To address this, we have proposed a waterproof PTC electric heater. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a waterproof PTC electric heater, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof PTC electric heater, comprising a frame, a cover, a heater, a cover, and insulation cotton, wherein the cover is located inside the frame, the cover is located at the top of the frame, the heater is located inside the cover, and the insulation cotton is located on the side of the cover and the frame facing each other.

[0006] A cable inlet is provided on one side of the frame, and a sealing gasket is provided inside the cable inlet. A cable groove is provided on the upper part of the sealing gasket.

[0007] The bottom of the cover is provided with silicone rubber, and the position of the silicone rubber matches the position of the sealing gasket.

[0008] Preferably, an annular groove is provided on the back side of the cover, and a PTFE seal is provided inside the annular groove. A gasket groove is provided on the upper part of the frame, and the gasket groove is fitted to the bottom of the PTFE seal.

[0009] Preferably, the outer side of the frame is provided with mounting grooves, and a rubber pad is provided inside the mounting groove, the rubber pad being inclined outwards.

[0010] Preferably, a graphene plate is disposed inside the frame, and the graphene plate is positioned corresponding to the heater.

[0011] Preferably, the cover has an internal heat insulation groove, and the heat insulation groove has an internal heat insulation plate, which is positioned corresponding to the heater.

[0012] Preferably, each of the outer sides of the frame is provided with a screw block, and each of the inner sides of the cover is provided with a through groove, and a tightening screw is provided inside the through groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By providing a cover, the upper part of the frame can be sealed. The cable inlet on one side of the frame can effectively guide the heater cable. The cable groove on the upper part of the sealing gasket can effectively limit the placement of the cable. The silicone rubber at the bottom of the cover can better fit the upper part of the sealing gasket, thus better sealing the cable and the cable inlet. This effectively seals the inlet of the device and prevents external liquid from seeping into the interior of the frame from the inlet.

[0015] 2. The PTFE seal is placed in the annular groove and the bottom of the PTFE seal is limited by the gasket groove. When the cover is tightened, the PTFE seal will seal the joint between the frame and the cover, preventing liquid from seeping in from the joint between the cover and the frame, thus better waterproofing the device.

[0016] 3. The installation groove allows for effective installation of the rubber pad, ensuring it is securely fixed to the bottom of the frame. This seals the connection between the frame and the water tank, preventing liquid backflow into the bottom of the frame and facilitating better heat conduction. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the thermal insulation cotton structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the frame structure of this utility model;

[0022] Figure 4This is a schematic diagram of the cover structure of this utility model.

[0023] In the diagram: 10, frame; 11, cable inlet; 12, sealing gasket; 13, cable tray; 20, frame; 30, heater; 40, cover; 41, silicone rubber; 42, annular groove; 43, PTFE seal; 44, gasket groove; 50, insulation cotton. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example 1, by Figure 1-4 Provided is a waterproof PTC electric heater, including a frame 10, a bracket 20, a heater 30, a cover 40 and insulation cotton 50. The bracket 20 is located inside the frame 10, the cover 40 is located on the upper part of the frame 10, the heater 30 is located inside the bracket 20, and the insulation cotton 50 is located on the side of the bracket 20 facing the frame 10.

[0026] A cable inlet seat 11 is provided on one side of the frame 10. A sealing gasket 12 is provided inside the cable inlet seat 11. A cable groove 13 is provided on the upper part of the sealing gasket 12.

[0027] The bottom of the cover 40 is provided with silicone rubber 41, the position of which matches the position of the sealing gasket 12. During use, the heater 30 can be insulated by the heat insulation cotton 50, effectively improving the heat insulation performance of the frame 10 and preventing the surface temperature of the frame 10 from becoming too high. The frame 20 effectively limits the installation position of the heater 30, allowing for better positioning. The cover 40 seals the upper part of the frame 10. The cable inlet 11 on one side of the frame 10 effectively guides the cable of the heater 30, and the cable groove 13 on the upper part of the sealing gasket 12 effectively limits the placement of the cable. Furthermore, the silicone rubber 41 at the bottom of the cover 40 allows for better contact with the upper part of the sealing gasket 12, thus better sealing the cable and its inlet. This effectively seals the inlet of the device, preventing external liquids from seeping into the frame 10. An annular groove 42 is provided on the back side of the cover 40, and a PTFE seal 43 is installed inside the annular groove 42. A gasket groove 44 is provided on the upper part of the frame 10, fitting snugly against the bottom of the PTFE seal 43. The annular groove 42 allows for the placement of the PTFE seal 43, and the gasket groove 44 limits the bottom of the PTFE seal 43, ensuring the cover 40... During tightening, the PTFE seal 43 seals the joint between the frame 10 and the cover 40, preventing liquid from seeping in and thus improving waterproofing. The frame 10 has evenly spaced mounting grooves on its outer side, each containing a rubber gasket angled outwards. These grooves allow for precise positioning of the rubber gasket, ensuring it is firmly fixed to the bottom of the frame 10. When the frame 10 is in contact with the water tank, the rubber gasket seals the joint, preventing liquid backflow into the bottom of the frame 10 and improving heat conduction. The frame 10 also contains graphite. The graphene plate is positioned correspondingly to the heater 30. By incorporating the graphene plate, the frame 10 can better conduct heat to the interior of the water tank when it is in contact with the water tank, thereby effectively improving the heating efficiency of the heater 30 and allowing it to heat the water tank more effectively. The cover 40 has an internal heat insulation groove containing a heat insulation plate, which is positioned correspondingly to the heater. The heat insulation groove limits the position of the heat insulation plate, facilitating its installation. The heat insulation plate also effectively insulates the upper part of the heater, preventing the cover 40 from overheating. Screw blocks are provided on the outer side of the frame 10, and through slots are formed inside the cover 40.The through groove contains a tightening screw. A screw-in block allows for effective screwing. The through groove also facilitates the screw's passage, ensuring better securing of the cover 40 when tightened.

[0028] Working Principle: When in use, the device uses heat insulation cotton 50 to insulate the heater 30, effectively improving the heat insulation performance of the frame 10 and preventing the surface temperature of the frame 10 from becoming too high. The frame 20 effectively limits the installation position of the heater 30, ensuring better positioning. The cover 40 seals the upper part of the frame 10. The cable inlet 11 on one side of the frame 10 effectively guides the cable of the heater 30. The cable groove 13 on the upper part of the sealing gasket 12 effectively limits the placement of the cable. The silicone rubber 41 at the bottom of the cover 40 better fits the upper part of the sealing gasket 12, further sealing the cable and its inlet. This effectively seals the inlet of the device, preventing external liquids from seeping into the interior of the frame 10.

[0029] It should be noted that, in this document, relational terms such as "second" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof PTC electric heater, characterized in that: It includes a frame (10), a bracket (20), a heater (30), a cover (40), and insulation cotton (50). The bracket (20) is located inside the frame (10), the cover (40) is located on the upper part of the frame (10), the heater (30) is located inside the bracket (20), and the insulation cotton (50) is located on the opposite side of the bracket (20) and the frame (10). A cable inlet seat (11) is provided on one side of the frame (10), and a sealing gasket (12) is provided inside the cable inlet seat (11). A cable groove (13) is provided on the upper part of the sealing gasket (12). The bottom of the cover (40) is provided with silicone rubber (41), and the position of the silicone rubber (41) matches the position of the sealing gasket (12).

2. A waterproof PTC electric heater according to claim 1, characterized in that: The cover (40) has an annular groove (42) on its back side, and a PTFE seal (43) is provided inside the annular groove (42). The frame (10) has a gasket groove (44) on its upper part, and the gasket groove (44) is fitted to the bottom of the PTFE seal (43).

3. A waterproof PTC electric heater according to claim 1, characterized in that: The frame (10) has uniformly provided mounting grooves on its outer side, and a rubber pad is provided inside the mounting groove. The rubber pad is shaped to be inclined outward.

4. A waterproof PTC electric heater according to claim 1, characterized in that: The frame (10) is equipped with a graphene plate inside, and the graphene plate is positioned in a corresponding manner to the heater (30).

5. A waterproof PTC electric heater according to claim 1, characterized in that: The cover (40) is provided with a heat insulation groove inside, and a heat insulation plate is provided inside the heat insulation groove. The heat insulation plate is positioned in a corresponding manner to the heater.

6. A waterproof PTC electric heater according to claim 1, characterized in that: The outer side of the frame (10) is provided with screw blocks, and the inside of the cover (40) is provided with through grooves, and tightening screws are provided inside the through grooves.

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