A PTC electric heater for new energy vehicles

Abstract

This utility model relates to the field of automotive electric heater technology, specifically to a PTC electric heater for new energy vehicles, comprising: a mounting bracket with a mounting cavity in the middle for mounting the electric heater body; a rotatable electric heater body disposed inside the mounting cavity; and heating strips evenly distributed inside the electric heater body. This utility model, through the inclusion of a processing mechanism, allows for the cleaning of dust adsorbed on the windward surface of the electric heater body. A second micro-motor starts, driving the limiting strip to rotate, thus releasing the limiting on the electric heater body and simultaneously pressing a push-button switch. This controls the first micro-motor to operate, causing the electric heater body inside the mounting bracket to rotate. The airflow from the air conditioning system blows off the dust adsorbed on its surface, resulting in a clean exterior of the electric heater body. The cleaning operation is convenient and quick, ensuring heating effect while avoiding odor generation, demonstrating good practicality.

Description

Technical Field

[0001] This utility model relates to the field of automotive electric heater technology, specifically to a PTC electric heater for new energy vehicles. Background Technology

[0002] PTC electric heaters are used in the air conditioning systems of new energy vehicles. These heaters consist of PTC ceramic heating elements and aluminum tubes. This type of PTC heating element has advantages such as low thermal resistance and high heat exchange efficiency, making it an automatic temperature-controlled and energy-saving electric heater. A key feature is its safety performance; under any application, it will not exhibit the surface "reddening" phenomenon seen in electric heating tube heaters, thus avoiding safety hazards such as burns and fires.

[0003] PTC electric heaters are typically installed in the air intake system of new energy vehicles' air conditioning systems. They heat the incoming air and then deliver the heated air into the vehicle to provide heating. After prolonged use, dust will accumulate on the outside of the PTC electric heater, which can affect its performance.

[0004] Existing PTC electric heaters that adsorb dust are prone to producing odors during operation, requiring disassembly and cleaning with a blower, which is cumbersome. Furthermore, frequent disassembly can reduce the seal between the heater and the air conditioning intake system, affecting the performance of the air conditioning system. Therefore, we propose a PTC electric heater for new energy vehicles. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a PTC electric heater for new energy vehicles, which can effectively solve the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a PTC electric heater for new energy vehicles, comprising: The mounting frame has a mounting cavity in the middle for mounting the electric heater body. The electric heater body is rotatable inside the mounting cavity. The electric heater body has heating strips distributed at equal intervals inside, and heat dissipation fins are arranged between adjacent heating strips. The processing mechanism includes a mounting groove on the outside of the mounting frame, a second micro motor installed inside the mounting groove, a limit bar fixedly connected to the output shaft of the second micro motor, a push switch provided on the outside of the mounting frame, a groove provided on the outside of the mounting frame, a first micro motor provided inside the groove, and a transmission shaft for driving the electric heater body to rotate fixedly connected to the output shaft of the first micro motor. The sealing mechanism includes a mounting frame fixedly connected to the outside of the mounting bracket. Two symmetrically distributed sealing grooves are provided on the outside of the mounting frame, and a sealing strip is provided on the inside of the sealing groove.

[0007] Preferably, a fixing seat is provided on the outside of the first micro motor, and the fixing seat is installed on the inner wall of the groove.

[0008] Preferably, the mounting bracket is provided with a protective plate for shielding the groove on the outside, and four through fixing bolts are provided on the outside of the protective plate. The mounting bracket is provided with four screw holes corresponding to the positions of the fixing bolts on the outside.

[0009] Preferably, a switch base is fixedly connected to the outside of the mounting bracket, and the push switch is mounted on the outside of the switch base.

[0010] Preferably, a rubber block is installed on the outside of the electric heater body, and the outside of the rubber block is in close contact with the outside of the limiting strip.

[0011] Preferably, a rotating shaft is fixedly connected to the side of the electric heater body away from the drive shaft, and the other end of the rotating shaft is movably connected to the inner wall of the mounting cavity through a bearing. The inner wall of the mounting cavity has a shaft hole communicating with the inside of the groove, and the drive shaft is movably connected to the inner wall of the shaft hole through a bearing.

[0012] Preferably, the mounting frame is fixedly connected to four mounting feet that are symmetrically distributed in pairs, and the mounting feet have through mounting holes on their outer sides.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. This utility model, by setting up a processing mechanism, when it is necessary to clean the dust adsorbed on the windward surface of the electric heater body, the second micro motor starts and drives the limit strip to rotate, thereby releasing the limit on the electric heater body and pressing the push switch, controlling the first micro motor to work, driving the electric heater body inside the mounting bracket to rotate, and using the air force of the air conditioning system to blow off the dust adsorbed on its surface, making the outside of the electric heater body clean. The cleaning operation is convenient and quick, and while ensuring the heating effect, it avoids the generation of odors, and has good practicality.

[0014] 2. This utility model, by setting a sealing mechanism, provides an installation frame, sealing groove and sealing strip on the outside of the mounting bracket, so that it has good sealing performance when installed in the air conditioning supply system, thus ensuring the performance of the air conditioning system in new energy vehicles. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the PTC electric heater of this utility model; Figure 2 This is a schematic diagram of the mounting bracket structure of this utility model; Figure 3 This is a schematic diagram of the groove structure of this utility model; Figure 4 This is a schematic diagram of the structure of the electric heater body of this utility model; Figure 5 This is a schematic diagram of the connection structure between the mounting frame and the mounting bracket of this utility model.

[0017] The labels in the diagram represent: 1. Mounting bracket; 11. Mounting cavity; 2. Electric heater body; 21. Heat dissipation fins; 22. Heating strip; 3. Processing mechanism; 31. Protective plate; 32. Fixing bolt; 33. Mounting groove; 34. Limiting strip; 35. Push switch; 36. Switch base; 37. Screw hole; 38. Groove; 39. Fixing base; 310. First micro motor; 311. Shaft hole; 312. Second micro motor; 313. Drive shaft; 314. Rotating shaft; 315. Rubber block; 4. Sealing mechanism; 41. Mounting foot; 42. Sealing groove; 43. Mounting frame; 44. Sealing strip. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The present invention will be further described below with reference to the embodiments. Example 1

[0020] Reference Figure 1-4 This is the first embodiment of the present invention, which discloses a PTC electric heater for new energy vehicles, comprising: Mounting bracket 1, with a mounting cavity 11 in the middle for mounting electric heater body 2. The electric heater body 2 is rotatable inside the mounting cavity 11. Heating strips 22 are evenly distributed inside the electric heater body 2. Heat dissipation fins 21 are provided between two adjacent heating strips 22. The processing mechanism 3 includes a mounting groove 33 on the outside of the mounting frame 1, a second micro motor 312 is installed inside the mounting groove 33, the output shaft of the second micro motor 312 is fixedly connected to a limit bar 34, a push switch 35 is provided on the outside of the mounting frame 1, a groove 38 is provided on the outside of the mounting frame 1, a first micro motor 310 is provided inside the groove 38, and the output shaft of the first micro motor 310 is fixedly connected to a transmission shaft 313 for driving the electric heater body 2 to rotate.

[0021] The second micro motor 312 drives the limit bar 34 to rotate, thereby removing the limit on the electric heater body 2. At the same time, it can also activate the push switch 35 to control the first micro motor 310 to start and control the electric heater body 2 to rotate, using the airflow in the air conditioning duct to clean the dust adsorbed on its surface.

[0022] Specifically, a fixing seat 39 is provided on the outside of the first micro motor 310. The fixing seat 39 is installed on the inner wall of the groove 38. A rotating shaft 314 is fixedly connected to the side of the electric heater body 2 away from the transmission shaft 313. The other end of the rotating shaft 314 is movably connected to the inner wall of the mounting cavity 11 through a bearing. A shaft hole 311 communicating with the inside of the groove 38 is opened on the inner wall of the mounting cavity 11. The transmission shaft 313 is movably connected to the inner wall of the shaft hole 311 through a bearing.

[0023] The mounting base 39 is used to install and fix the first micro motor 310 to ensure the stability of the first micro motor 310. Under the action of the rotating shaft 314, the electric heater body 2 can rotate on the inner wall of the mounting cavity 11. The first micro motor 310 can provide power for the rotation of the electric heater body 2 through the output shaft and the transmission shaft 313.

[0024] Specifically, the outer side of the mounting bracket 1 is provided with a protective plate 31 for shielding the groove 38, and four through fixing bolts 32 are provided on the outer side of the protective plate 31. The outer side of the mounting bracket 1 is provided with four screw holes 37 corresponding to the positions of the fixing bolts 32.

[0025] The protective plate 31 can seal the groove 38, preventing dust or moisture from entering and causing damage to the first micro motor 310, thus improving the service life of the first micro motor 310.

[0026] Specifically, a switch base 36 is fixedly connected to the outside of the mounting bracket 1, a push switch 35 is installed on the outside of the switch base 36, and a rubber block 315 is installed on the outside of the electric heater body 2. The outside of the rubber block 315 is tightly fitted to the outside of the limit strip 34.

[0027] The switch base 36 is used to facilitate the installation of the push switch 35. The push switch 35 is electrically connected to the first micro motor 310. When the push switch 35 is pressed, it can drive the first micro motor 310 to start. Example 2

[0028] Reference Figure 1 and Figure 5 This is the second embodiment of the present invention, which differs from the first embodiment in that: The sealing mechanism 4 includes a mounting frame 43 fixedly connected to the outside of the mounting bracket 1. Two symmetrically distributed sealing grooves 42 are provided on the outside of the mounting frame 43, and a sealing strip 44 is provided on the inside of the sealing grooves 42.

[0029] Mounting frame 43 is used to connect with the car air conditioning duct, and the sealing groove 42 and sealing strip 44 ensure the sealing of the connection.

[0030] Specifically, four mounting feet 41 are fixedly connected to the outside of the mounting frame 43 in a symmetrical arrangement, and through mounting holes are provided on the outside of the mounting feet 41.

[0031] The mounting feet 41 and mounting holes facilitate connection to the air conditioning duct system.

[0032] The remaining structure is the same as that in Example 1.

[0033] The workflow of this utility model is as follows: The mounting feet 41 are used to connect it to the automotive air conditioning duct system. During the connection, the sealing groove 42 and the sealing strip 44 seal the connection. When it is necessary to clean the dust adsorbed on the windward side of the electric heater body 2, the second micro motor 312 is started. The second micro motor 312 drives the limit bar 34 to rotate 90 degrees. The rotating limit bar 34 presses the push switch 35 on the switch base 36. When the push switch 35 is pressed, the first micro motor 310 is started. The electric heater body 2 is rotated by a certain angle through the transmission shaft 313. Then the limit bar 34 continues to rotate, and the press switch 35 is released. The air intake in the air conditioning duct blows away the dust adsorbed on the windward side of the electric heater body 2. After the dust on the windward surface of the electric heater body 2 is cleaned, the second micro motor 312 rotates in the reverse direction, driving the limit strip 34 to rotate in the reverse direction, pressing the push switch 35 again, and the first micro motor 310 rotates in the reverse direction to reset. At this time, the limit strip 34 continues to rotate, cooperating with the rubber block 315 on the outside of the electric heater body 2 to limit the position of the electric heater body 2 inside the mounting cavity 11.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A PTC electric heater for new energy vehicles, characterized in that, include: Mounting bracket (1), the mounting bracket (1) has a mounting cavity (11) in the middle for mounting the electric heater body (2), the mounting cavity (11) is provided with a rotatable electric heater body (2), the electric heater body (2) is provided with heating strips (22) distributed at equal intervals inside the electric heater body (2), and heat dissipation fins (21) are provided between two adjacent heating strips (22). The processing mechanism (3) includes a mounting groove (33) on the outside of the mounting frame (1), a second micro motor (312) is installed inside the mounting groove (33), the output shaft of the second micro motor (312) is fixedly connected to a limit bar (34), a push switch (35) is provided on the outside of the mounting frame (1), a groove (38) is provided on the outside of the mounting frame (1), a first micro motor (310) is provided inside the groove (38), and the output shaft of the first micro motor (310) is fixedly connected to a transmission shaft (313) for driving the electric heater body (2) to rotate. The sealing mechanism (4) includes a mounting frame (43) fixedly connected to the outside of the mounting bracket (1). Two symmetrically distributed sealing grooves (42) are opened on the outside of the mounting frame (43), and a sealing strip (44) is provided on the inside of the sealing groove (42).

2. The PTC electric heater for new energy vehicles according to claim 1, characterized in that, The first micro motor (310) is provided with a fixing seat (39) on the outside, and the fixing seat (39) is installed on the inner wall of the groove (38).

3. A PTC electric heater for new energy vehicles according to claim 1, characterized in that, The mounting bracket (1) is provided with a protective plate (31) for shielding the groove (38) on the outside. The protective plate (31) is provided with four through fixing bolts (32) on the outside. The mounting bracket (1) is provided with four screw holes (37) corresponding to the positions of the fixing bolts (32) on the outside.

4. A PTC electric heater for new energy vehicles according to claim 1, characterized in that, A switch base (36) is fixedly connected to the outside of the mounting bracket (1), and the push switch (35) is installed on the outside of the switch base (36).

5. A PTC electric heater for new energy vehicles according to claim 1, characterized in that, A rubber block (315) is installed on the outside of the electric heater body (2), and the outside of the rubber block (315) is closely fitted with the outside of the limiting strip (34).

6. A PTC electric heater for new energy vehicles according to claim 1, characterized in that, The electric heater body (2) is fixedly connected to a rotating shaft (314) on the side away from the drive shaft (313). The other end of the rotating shaft (314) is movably connected to the inner wall of the mounting cavity (11) through a bearing. The inner wall of the mounting cavity (11) is provided with a shaft hole (311) that communicates with the inside of the groove (38). The drive shaft (313) is movably connected to the inner wall of the shaft hole (311) through a bearing.

7. A PTC electric heater for new energy vehicles according to claim 1, characterized in that, The mounting frame (43) is fixedly connected to four mounting feet (41) that are symmetrically distributed in pairs. The mounting feet (41) have through mounting holes on their outer sides.

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