Waterproof PTC (Positive Temperature Coefficient) electric heater for air conditioner

Abstract

The utility model relates to the technical field of electric heaters, and discloses a waterproof PTC electric heater for an air conditioner, which comprises a shell and a cover body, a mounting plate is arranged in the shell, one side of the mounting plate is provided with an electric heater, two sides of the mounting plate are provided with connectors, one side of each connector is provided with a cable, and the other side of each connector is provided with a waterproof layer. The heat insulation device comprises a shell, a cover body is arranged in the shell, a containing groove is formed in one side of the shell, a sealing assembly is arranged in the containing groove, an annular groove is formed in the shell, and a sealing gasket is arranged in the annular groove. According to the scheme, heat insulation work can be effectively conducted on the interior of the cover body, and therefore the heat insulation performance of the heat insulation device is effectively improved; when the device is used, sealing and waterproof work can be carried out on the joint of the shell and the cover body through the sealing gasket, waterproof work can be effectively carried out on the cable through the arrangement of the sealing assembly, and liquid is prevented from permeating into the shell through the cable joint.

Description

Technical Field

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

[0002] PTC heaters, also known as PTC heating elements, consist of a PTC ceramic heating element and an aluminum tube. This type of PTC heater has the advantages of low thermal resistance and high heat exchange efficiency, making it an automatic temperature-controlled and energy-saving electric heater. Its outstanding feature lies in its safety performance; under any application, it will not produce the surface "reddening" phenomenon seen in electric heating tube heaters, thus avoiding safety hazards such as burns and fires.

[0003] During the use of PTC electric heaters in car air conditioners, because the heaters are exposed to the outside, rainwater splashes from the car into the heaters, causing a short circuit due to electrical currents inside the heaters. To address this, we propose a waterproof PTC electric heater for air conditioners. 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 for air conditioners, 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 for air conditioning, comprising a housing and a cover, wherein an installation plate is provided inside the housing, an electric heater is provided on one side of the installation plate, connectors are provided on both sides of the installation plate, a cable is provided on one side of the connector, a mounting groove is provided on one side of the housing, a sealing component is provided inside the mounting groove, and an annular groove is provided inside the housing, a sealing gasket is provided inside the annular groove;

[0006] The cover has a heat insulation block inside, and a groove is formed on the upper part of the cover. The groove and the annular groove are positioned in a corresponding manner.

[0007] Preferably, the outer side of the housing is uniformly provided with guide grooves, and the outer side of the housing is provided with sliding grooves, the upper part of the sliding grooves being connected to the guide grooves.

[0008] Preferably, the shell has an internal cavity, and the cavity is lined with heat-insulating cotton.

[0009] Preferably, the sealing assembly includes a rubber gasket, the rubber gasket being conical in shape, with an annular groove on the outer side of the rubber gasket and a wire groove on the inner side of the rubber gasket.

[0010] Preferably, a ceramic seat is provided on the left side of the inner cavity of the housing, and the connector is located inside the ceramic seat.

[0011] Preferably, each mounting plate has mounting holes inside, and a temperature sensor is installed inside each mounting hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The grooves effectively compress the sealing gasket, ensuring a better seal at the connection between the cover and the housing, preventing leakage. The heat insulation block effectively insulates the interior of the cover, thus improving the device's heat insulation performance. During use, the sealing gasket seals the connection between the housing and the cover, preventing water from seeping into the housing through the cable connection.

[0014] 2. By setting up a flow guide channel, the liquid blocked by the sealing gasket can be effectively guided. Furthermore, by setting up a sliding groove, the liquid inside the flow guide channel can be guided, allowing the liquid to slide down better and preventing liquid accumulation.

[0015] 3. By setting up a cable tray, cables can be effectively placed. The annular groove allows the rubber pad to be better secured inside the tray. The elasticity of the rubber pad effectively seals the tray, preventing liquid from seeping in from the inside. Attached Figure Description

[0016] 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.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the housing of this utility model;

[0020] Figure 3 This is a schematic diagram of the connector structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cover structure of this utility model;

[0022] Figure 5This is a schematic diagram of the sealing component structure of this utility model.

[0023] In the diagram: 10. Housing; 11. Mounting plate; 12. Electric heater; 13. Connector; 14. Cable; 15. Support groove; 16. Sealing assembly; 160. Rubber gasket; 161. Annular groove; 162. Cable groove; 17. Annular groove; 18. Sealing gasket; 19. Guide groove; 190. Slide groove; 20. Cover; 21. Heat insulation block; 22. Groove. 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 1-5 Provided is a waterproof PTC electric heater for air conditioning, including a housing 10 and a cover 20. The housing 10 has an internal mounting plate 11, an electric heater 12 is provided on one side of the mounting plate 11, connectors 13 are provided on both sides of the mounting plate 11, a cable 14 is provided on one side of the connector 13, a mounting groove 15 is provided on one side of the housing 10, a sealing component 16 is provided inside the mounting groove 15, and an annular groove 17 is provided inside the housing 10, a sealing gasket 18 is provided inside the annular groove 17.

[0026] The cover 20 has an internal heat insulation block 21. A groove 22 is formed on the upper part of the cover 20, corresponding to the position of the annular groove 17. During use, the electric heater 12 can be effectively installed using the mounting plate 11, which limits its position. A connector 13 allows for better installation of the cable 14. A mounting groove 15 effectively installs the sealing assembly 16, which seals the cable 14, preventing liquid from seeping into the housing 10. The annular groove 17 inside the housing 10 effectively limits the position of the sealing gasket 18. The cover 20 effectively seals the upper part of the housing 10. The groove 22 effectively compresses the sealing gasket 18, further sealing the connection between the cover 20 and the housing 10 and preventing leakage. The heat insulation block 21 effectively insulates the interior of the cover 20, improving the device's heat insulation performance. During use, the sealing gasket 18 seals the connection between the housing 10 and the cover 20, preventing water from seeping into the housing 10 through the cable 14 connection. The sealing assembly 16 effectively waterproofs the cable 14 connection, preventing liquid from entering the housing 10 through the cable 14 connection. The outer side of the housing 10 is provided with uniformly spaced guide grooves 19, and the outer side of the housing 10 is provided with sliding grooves 190. The upper part of the sliding grooves 190 is connected to the guide grooves 19. By providing guide grooves 19, the liquid blocked by the sealing gasket 18 can be effectively guided. By providing sliding grooves 190, the liquid inside the guide grooves 19 can be guided, allowing the liquid to slide down better and avoiding liquid accumulation. The housing 10 has an internal cavity, and the cavity is filled with heat insulation cotton. By providing a cavity, the heat insulation cotton can be effectively placed, and the heat insulation cotton can effectively insulate the electric heater 12, thereby effectively improving the heating performance of the electric heater 12. Component 16 includes a rubber pad 160, which is conical in shape. An annular groove 161 is formed on the outer side of the rubber pad 160, and a wire groove 162 is formed inside the rubber pad 160. The wire groove 162 effectively accommodates the cable 14, and the annular groove 161 allows the rubber pad 160 to better engage with the inside of the support groove 15. The elasticity of the rubber pad 160 effectively seals the support groove 15, preventing liquid from seeping in from the inside. A ceramic seat is located on the left side of the inner cavity of the housing 10, and the connector 13 is located inside the ceramic seat. The ceramic seat effectively positions the connector 13 and provides good heat insulation.This effectively prevents the cable 14 from softening due to excessive temperature. The mounting plate 11 has mounting holes inside, each housing a temperature sensor. These holes allow for precise positioning of the temperature sensors and enable effective measurement and detection of the internal temperature of the housing 10.

[0027] Working principle: When the device is in use, the mounting plate 11 effectively installs the electric heater 12 and defines its position. The connector 13 allows for better installation of the cable 14. The mounting groove 15 effectively installs the sealing component 16, which effectively seals the cable 14, preventing liquid from seeping into the housing 10. The annular groove 17 on the inner side of the housing 10 effectively defines the position of the sealing gasket 18. The cover 20 effectively protects the upper part of the housing 10. The device performs sealing work, and the groove 22 effectively compresses the sealing gasket 18 to better seal the connection between the cover 20 and the housing 10, preventing leakage at the connection between the housing 10 and the cover 20. The heat insulation block 21 effectively insulates the inside of the cover 20, thereby improving the heat insulation performance of the device. When in use, the sealing gasket 18 can seal and waterproof the connection between the housing 10 and the cover 20, and the sealing component 16 can effectively waterproof the cable 14, preventing liquid from seeping into the inside of the housing 10 through the connection of the cable 14.

[0028] 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.

[0029] 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 for air conditioning, characterized in that: The device includes a housing (10) and a cover (20). The housing (10) has an installation plate (11) inside. An electric heater (12) is provided on one side of the installation plate (11). Connectors (13) are provided on both sides of the installation plate (11). A cable (14) is provided on one side of the connector (13). A storage groove (15) is provided on one side of the housing (10). A sealing component (16) is provided inside the storage groove (15). An annular groove (17) is provided inside the housing (10). A sealing gasket (18) is provided inside the annular groove (17). The cover (20) is provided with a heat insulation block (21) inside, and a groove (22) is provided on the upper part of the cover (20). The groove (22) is positioned in a corresponding manner to the annular groove (17).

2. The waterproof PTC electric heater for air conditioning according to claim 1, characterized in that: The outer side of the housing (10) is uniformly provided with guide grooves (19), and the outer side of the housing (10) is provided with sliding grooves (190). The upper part of the sliding grooves (190) is connected to the guide grooves (19).

3. A waterproof PTC electric heater for air conditioning according to claim 1, characterized in that: The shell (10) has an internal cavity, and the cavity is filled with heat insulation cotton.

4. A waterproof PTC electric heater for air conditioning according to claim 1, characterized in that: The sealing assembly (16) includes a rubber pad (160) which is conical in shape. An annular groove (161) is provided on the outer side of the rubber pad (160), and a wire groove (162) is provided inside the rubber pad (160).

5. A waterproof PTC electric heater for air conditioning according to claim 1, characterized in that: A ceramic seat is provided on the left side of the inner cavity of the housing (10), and the connector (13) is located inside the ceramic seat.

6. A waterproof PTC electric heater for air conditioning according to claim 1, characterized in that: The mounting plate (11) is provided with mounting holes, and temperature sensors are installed inside the mounting holes.

Images