PTC electric heater

Abstract

The invention belongs to the technical field of electric heaters, and particularly relates to a PTC electric heater which comprises a base, a plurality of sleeves are fixedly connected to the upper end face of the base, telescopic rods are slidably connected to inner cavities of the sleeves, a lifting plate is fixedly connected to the upper ends of the telescopic rods, and a mounting plate is rotatably arranged on one side of the lifting plate. A mounting frame is fixedly connected to one side of the upper end face of the mounting plate, and a mounting hole used for mounting a fan is formed in one side of the inner side of the mounting frame. By means of the traction adjusting assembly, the area of the opening in one side of the air guide pad can be adjusted under cooperation of the four traction columns, and the area is made to be equal to the needed coverage range. And then, the transverse position and the longitudinal position of the air outlet are adjusted, so that the air outlet is aligned with the designated area, the warm air can act on the designated area or the object in a concentrated mode, the object drying efficiency is improved, and different use requirements are met.

Description

Technical Field

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

[0002] A PTC electric heater is an electric heating device that uses PTC thermistor ceramic material as the heating element. Its core features are automatic temperature control, self-limiting power, and safe anti-dry-burning capabilities.

[0003] Patent CN220023091U discloses a PTC electric heater with protective function, relating to the field of electric heater technology. This protective PTC electric heater includes a connecting column, with side connecting plates on both sides of the connecting column. Each side connecting plate is threaded with a fixing bolt, the opposite end of which is threaded into the internal threads of the connecting column. A PTC heating element is disposed between the two side connecting plates, and a sliding track is provided on the side connecting plates. This protective PTC electric heater allows the pressing rod, small drive gear, and large gear to reset, thereby fixing the PTC heating element. This facilitates the fixing of the PTC heating element, improves the ease of fixing the PTC heating element to the connecting column, prevents the PTC heating element from detaching from the side connecting plates, and also facilitates the protection of the PTC heating element through a retaining ring, thereby preventing impacts to the PTC heating element, improving the protective effect of the PTC heating element, and reducing the probability of damage to the PTC heating element.

[0004] However, the above technical solutions still have the following shortcomings in practical applications: PTC electric heaters are often used in conjunction with fans. By installing the fan on one side of the PTC heater, the air blown by the fan is heated into warm air after passing through the PTC heating element, thus meeting heating needs. However, the area covered by the air blown out from the PTC heater is fixed. In some cases, when it is necessary to concentrate the hot air on a localized area, such as when drying objects, the fixed coverage area makes it difficult to concentrate the hot air on the object to be dried, thus affecting drying efficiency. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a PTC electric heater.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a PTC electric heater, including a base, a plurality of sleeves fixedly connected to the upper end face of the base, a telescopic rod slidably connected to the inner cavity of the sleeve, a lifting plate fixedly connected to the upper end of the telescopic rod, an installation plate rotatably arranged on one side of the lifting plate, an installation frame fixedly connected to one side of the upper end face of the installation plate, an installation hole for installing a fan provided on one side of the inner side of the installation frame, a plurality of PTC heating elements provided in the inner cavity of the installation frame, and an air guide pad fixedly connected to one side of the installation frame, the air guide pad being made of elastic material; It also includes a traction adjustment component; The traction adjustment assembly includes a transverse plate slidably connected to one side of the upper surface of the mounting plate. A support plate is slidably connected to one side of the transverse plate, and two adjustment plates are slidably connected to one side of the support plate. Sliders are slidably connected to both sides of the adjustment plate, and a traction column is slidably connected to one side of the slider. The end of the traction column is fixedly connected to one side of the air guide pad.

[0007] Preferably, one end of the transverse plate is threadedly connected to a threaded rod, both ends of which are rotatably mounted on the mounting plate. A motor is fixedly connected to one side of the upper surface of the mounting plate, and the output end of the motor is fixedly connected to one end of the threaded rod.

[0008] Preferably, one end of the transverse plate is threadedly connected to a threaded rod two, both ends of the threaded rod two are rotatably mounted on the transverse plate, and one end of the transverse plate is fixedly connected to a motor three, the output end of the motor three being fixedly connected to one end of the threaded rod two.

[0009] Preferably, a bidirectional threaded rod is rotatably provided at both ends on one side of the support plate, and the two sides of the bidirectional threaded rod are respectively threaded to the ends of the adjustment plates on both sides. A motor is fixedly connected to one end of the support plate, and the output end of the motor is fixedly connected to one end of the bidirectional threaded rod.

[0010] Preferably, a bidirectional threaded rod is rotatably provided at both ends on one side of the adjusting plate, and the two sides of the bidirectional threaded rod are respectively threadedly connected to the sliders on both sides. A motor is fixedly connected to one end of the adjusting plate, and the output end of the motor is fixedly connected to one end of the bidirectional threaded rod.

[0011] Preferably, it also includes an adjustment component; The adjustment assembly includes a motor fixedly connected to one side of the upper surface of the lifting plate, and the output end of the motor is fixedly connected to one end of the mounting plate.

[0012] Preferably, a threaded cylinder is rotatably provided on one side of the upper end face of the base, and a threaded rod three is threadedly connected to the inner cavity of the threaded cylinder. The upper end of the threaded rod three is fixedly connected to one side of the bottom of the lifting plate.

[0013] Preferably, a worm gear is fixedly sleeved on the threaded cylinder, a worm is rotatably mounted on one side of the upper end face of the base, the worm and the worm gear mesh with each other, and a motor is fixedly connected to one side of the upper end face of the base, the output end of the motor is fixedly connected to one end of the worm.

[0014] Preferably, it also includes a shaking aid to prevent impurities from remaining inside the air guide pad; The shaking assist component includes a hinge block fixedly connected to one end of the traction column, a second connecting rod rotatably disposed on one side of the hinge block, a first connecting rod rotatably disposed at one end of the second connecting rod, a connecting block fixedly connected to one side of the slider, and one end of the first connecting rod rotatably disposed on the connecting block.

[0015] Preferably, a motor six is ​​fixedly connected to one side of the connecting block, and the output end of the motor six is ​​fixedly connected to one end of the connecting rod.

[0016] The beneficial effects of this invention are as follows: 1. The PTC electric heater of the present invention utilizes a traction adjustment assembly to adjust the area of ​​the opening on one side of the air guide pad with the coordinated action of four traction columns, ensuring that this area is equal to the required coverage area. Subsequently, the horizontal and vertical positions of the air outlet are adjusted so that the air outlet is aligned with the designated area, thereby allowing the warm air to be concentrated on the designated area or object, which is beneficial for improving the drying efficiency of the object and adapting to different usage needs.

[0017] 2. The PTC electric heater described in this invention utilizes an adjustment component to adjust the air outlet angle and height, thereby adapting to different usage requirements.

[0018] 3. The PTC electric heater of the present invention utilizes a shaking auxiliary component. Whenever the airflow is guided by the air guide pad, the hinge block and traction column can reciprocate under the coordinated action of connecting rod one and connecting rod two. The end of the traction column stretches the air guide pad, and under the coordinated action of multiple traction columns, the various surfaces of the air guide pad can be shaken, thereby shaking off the dust attached to the inner side of the air guide pad. The dust will be blown out with the wind, thus achieving self-cleaning of the dust on the inner side of the air guide pad. This avoids the situation where dust adheres to the inner side of the air guide pad and forms clumps, which would affect the elasticity of the air guide pad and cause corrosion. This is beneficial to improving the service life of the air guide pad. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the three-dimensional structure of the mounting frame; Figure 4 This is a schematic diagram of the three-dimensional structure at the slider. Figure 5 This is a schematic diagram of the three-dimensional structure of the air guide pad; Figure 6 This is a schematic diagram of the three-dimensional structure at the connecting block; Figure 7 This is a schematic diagram of the three-dimensional structure at the mounting plate. Figure 8 This is a three-dimensional structural diagram of the mounting hole.

[0021] In the diagram: 1. Base; 2. Sleeve; 3. Telescopic rod; 4. Lifting plate; 5. Motor 1; 6. Mounting plate; 7. Mounting frame; 8. Air guide pad; 9. Horizontal sliding plate; 10. PTC heating element; 11. Threaded rod 1; 12. Motor 2; 13. Threaded rod 2; 14. Motor 3; 15. Support plate; 16. Motor 4; 17. Bidirectional threaded rod 1; 18. Motor 5; 19. Bidirectional threaded rod 2; 20. Adjusting plate; 21. Slider; 22. Traction column; 23. Connecting block; 24. Motor 6; 25. Connecting rod 1; 26. Connecting rod 2; 27. Hinge block; 28. Threaded rod 3; 29. ​​Threaded cylinder; 30. Worm gear; 31. Motor 7; 32. Worm; 33. Mounting hole. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please refer to Figures 1-8 The present invention provides a technical solution: a PTC electric heater, including a base 1, a plurality of sleeves 2 fixedly connected to the upper end face of the base 1, a telescopic rod 3 slidably connected to the inner cavity of the sleeve 2, a lifting plate 4 fixedly connected to the upper end of the telescopic rod 3, an installation plate 6 rotatably arranged on one side of the lifting plate 4, an installation frame 7 fixedly connected to one side of the upper end face of the installation plate 6, an installation hole 33 for installing a fan provided on one side of the inner side of the installation frame 7, a plurality of PTC heating cores 10 provided in the inner cavity of the installation frame 7, and an air guide pad 8 fixedly connected to one side of the installation frame 7, the air guide pad 8 being made of elastic material; It also includes a traction adjustment component; The traction adjustment assembly includes a transverse plate 9 slidably connected to one side of the upper end face of the mounting plate 6. A support plate 15 is slidably connected to one side of the transverse plate 9. Two adjustment plates 20 are slidably connected to one side of the support plate 15. Slider 21 is slidably connected to both sides of the adjustment plate 20. A traction column 22 is slidably connected to one side of the slider 21. The end of the traction column 22 is fixedly connected to one side of the air guide pad 8.

[0024] In this embodiment, as Figures 3-5 As shown, one end of the transverse plate 9 is threadedly connected to a threaded rod 11. Both ends of the threaded rod 11 are rotatably mounted on the mounting plate 6. A motor 2 12 is fixedly connected to one side of the upper surface of the mounting plate 6. The output end of the motor 2 12 is fixedly connected to one end of the threaded rod 11.

[0025] One end of the transverse plate 9 is threadedly connected to a threaded rod 13. Both ends of the threaded rod 13 are rotatably mounted on the transverse plate 9. One end of the transverse plate 9 is fixedly connected to a motor 14. The output end of the motor 14 is fixedly connected to one end of the threaded rod 13.

[0026] The support plate 15 has a double-threaded rod 17 rotatably installed at both ends on one side. The two sides of the double-threaded rod 17 are threadedly connected to the ends of the adjusting plates 20 on both sides. The support plate 15 has a motor 16 fixedly connected to one end. The output end of the motor 16 is fixedly connected to one end of the double-threaded rod 17.

[0027] The adjusting plate 20 has a double-threaded rod 19 rotatably mounted on both ends of one side. The two sides of the double-threaded rod 19 are threadedly connected to the sliders 21 on both sides. The adjusting plate 20 has a motor 18 fixedly connected to one end. The output end of the motor 18 is fixedly connected to one end of the double-threaded rod 19.

[0028] Specifically, existing PTC electric heaters are often used in conjunction with fans. By installing the fan on one side of the PTC electric heater, the air blown by the fan is heated into warm air after passing through the PTC heating element 10, thus meeting the heating needs. However, the area covered by the air blown out from the PTC electric heater is fixed. In some cases, when it is necessary to concentrate the hot air on a localized area, such as when drying an object, the fixed coverage area makes it difficult to concentrate the hot air on the object to be dried, thus affecting the drying efficiency.

[0029] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: The fan is installed on one side of the mounting frame 7 using the mounting hole 33. Then, the PTC heating core 10 is energized and heated. When the fan is started, the air will pass through the PTC heating core 10 and be discharged from the inside of the air guide pad 8, thereby achieving the effect of heating the air.

[0030] When the air outlet range needs to be adjusted, the distance between two adjacent sliders 21 on the same adjustment plate 20 can be adjusted by rotating the bidirectional threaded rod 19 driven by motor 5 18. The distance between the two adjustment plates 20 can be adjusted by rotating the bidirectional threaded rod 17 driven by motor 4 16. When the sliders 21 move, the elasticity of the air guide pad 8 allows the area of ​​the opening on one side of the air guide pad 8 to be adjusted with the cooperation of the four traction columns 22, making this area equal to the required coverage area. Subsequently, the support plate 15 moves up and down by rotating the threaded rod 13 driven by motor 3 14, and the transverse plate 9 moves left and right by rotating the threaded rod 11 driven by motor 2 12. This adjusts the horizontal and vertical position of the air outlet, aligning it with the designated area. This allows the warm air to be concentrated on the designated area or object, improving drying efficiency and adapting to different usage needs.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 7 As shown, it also includes adjustment components; The adjustment assembly includes a motor 5 fixedly connected to one side of the upper end face of the lifting plate 4, and the output end of the motor 5 is fixedly connected to one end of the mounting plate 6.

[0032] A threaded cylinder 29 is rotatably mounted on one side of the upper end face of the base 1. A threaded rod 28 is threadedly connected to the inner cavity of the threaded cylinder 29. The upper end of the threaded rod 28 is fixedly connected to one side of the bottom of the lifting plate 4.

[0033] A worm gear 30 is fixedly sleeved on the threaded cylinder 29. A worm 32 is rotatably mounted on one side of the upper end face of the base 1. The worm 32 and the worm gear 30 mesh with each other. A motor 31 is fixedly connected to one side of the upper end face of the base 1. The output end of the motor 31 is fixedly connected to one end of the worm 32.

[0034] Specifically, by rotating the mounting plate 6 via motor 5, the tilt angle of the mounting frame 7 can be adjusted. By rotating the worm gear 32 via motor 31, the worm wheel 30 and the threaded cylinder 29 rotate synchronously, causing the threaded rod 28 to move within the inner cavity of the threaded cylinder 29. This causes the telescopic rod 3 to slide relative to the sleeve 2, thereby adjusting the height of the lifting plate 4. Thus, the air outlet angle and height can be controlled through these adjustments to adapt to different usage needs.

[0035] In this embodiment, as Figure 4 and Figure 6 As shown, it also includes a shaking-off auxiliary component to prevent impurities from remaining on the inside of the air guide pad 8; The shaking auxiliary component includes a hinge block 27 fixedly connected to one end of the traction column 22, a connecting rod 26 rotatably disposed on one side of the hinge block 27, a connecting rod 25 rotatably disposed on one end of the connecting rod 26, a connecting block 23 fixedly connected to one side of the slider 21, and one end of the connecting rod 25 rotatably disposed on the connecting block 23.

[0036] A motor 6 24 is fixedly connected to one side of the connecting block 23, and the output end of the motor 6 24 is fixedly connected to one end of the connecting rod 1 25.

[0037] Specifically, in the above embodiments, although the air outlet area can be controlled by adjusting the size of the opening on one side of the air guide pad 8, in actual application, the shape of the air guide pad 8 often changes, so dust in the air is easy to adhere to the texture gaps on the inner side of the air guide pad 8. After long-term accumulation, the dust is easy to form hard lumps on the inner side of the air guide pad 8, which not only affects the elasticity of the air guide pad 8, but also causes corrosion to the air guide pad 8, thereby affecting its service life.

[0038] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: Whenever the airflow is guided by the air guide pad 8, multiple motors 6 24 can be activated simultaneously. The motors 6 24 drive the connecting rod 1 25 to rotate, which, with the cooperation of connecting rod 1 25 and connecting rod 2 26, causes the hinge block 27 and the traction column 22 to move back and forth. The end of the traction column 22 stretches the air guide pad 8, and with the cooperation of multiple traction columns 22, all surfaces of the air guide pad 8 vibrate, thereby shaking off the dust attached to the inside of the air guide pad 8. The dust will be blown out with the wind, thus achieving self-cleaning of the dust on the inside of the air guide pad 8. This avoids the situation where dust adheres to the inside of the air guide pad 8 and forms clumps, which would affect the elasticity of the air guide pad 8 and cause corrosion. This helps to improve the service life of the air guide pad 8.

[0039] Working principle: The fan is installed on one side of the mounting frame 7 using the mounting hole 33. Then, the PTC heating element 10 is heated by electricity. When the fan starts, the air passes through the PTC heating element 10 and is discharged from the inside of the air guide pad 8, thus achieving the effect of heating the air. When it is necessary to adjust the air outlet range, the distance between two adjacent sliders 21 on the same adjustment plate 20 can be adjusted by rotating the bidirectional threaded rod 19 driven by motor 5 18. The distance between the two adjustment plates 20 can be adjusted by rotating the bidirectional threaded rod 17 driven by motor 4 16. When the slider 21 moves, due to the elasticity of the air guide pad 8, the area of ​​the opening on one side of the air guide pad 8 can be adjusted with the cooperation of the four traction columns 22, so that the area is equal to the required coverage area. Subsequently, by rotating the threaded rod 13 driven by motor 314, the support plate 15 moves up and down. Motor 212 drives the threaded rod 11 to move the transverse plate 9 left and right, thereby adjusting the horizontal and vertical position of the air outlet. This allows the air outlet to be aligned with a designated area, concentrating the warm air on that area or object, improving drying efficiency and adapting to different usage needs. By rotating the mounting plate 6 driven by motor 15, the tilt angle of the mounting frame 7 can be adjusted. By rotating the worm gear 32 driven by motor 71, the worm wheel 30 and the threaded cylinder 29 rotate synchronously, causing the threaded rod 28 to move within the threaded cylinder 29. This causes the telescopic rod 3 and the sleeve 2 to slide relative to each other, adjusting the height of the lifting plate 4. Thus, the air outlet angle and height can be controlled through these adjustments to adapt to different usage needs. Whenever the airflow is guided by the air guide pad 8, multiple motors 6 24 can be activated simultaneously. The motors 6 24 drive the connecting rod 1 25 to rotate, which, with the cooperation of connecting rod 1 25 and connecting rod 2 26, causes the hinge block 27 and the traction column 22 to move back and forth. The end of the traction column 22 stretches the air guide pad 8, and with the cooperation of multiple traction columns 22, all surfaces of the air guide pad 8 vibrate, thereby shaking off the dust attached to the inside of the air guide pad 8. The dust will be blown out with the wind, thus achieving self-cleaning of the dust on the inside of the air guide pad 8. This avoids the situation where dust adheres to the inside of the air guide pad 8 and forms clumps, which would affect the elasticity of the air guide pad 8 and cause corrosion. This helps to improve the service life of the air guide pad 8.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PTC electric heater, comprising a base (1), characterized in that: Multiple sleeves (2) are fixedly connected to the upper end face of the base (1). A telescopic rod (3) is slidably connected to the inner cavity of the sleeve (2). A lifting plate (4) is fixedly connected to the upper end of the telescopic rod (3). An installation plate (6) is rotatably provided on one side of the lifting plate (4). An installation frame (7) is fixedly connected to one side of the upper end face of the installation plate (6). An installation hole (33) for installing a fan is provided on one side of the inner side of the installation frame (7). Multiple PTC heating elements (10) are provided in the inner cavity of the installation frame (7). An air guide pad (8) is fixedly connected to one side of the installation frame (7). The air guide pad (8) is made of elastic material. It also includes a traction adjustment component; The traction adjustment assembly includes a transverse plate (9) slidably connected to one side of the upper surface of the mounting plate (6). A support plate (15) is slidably connected to one side of the transverse plate (9). Two adjustment plates (20) are slidably connected to one side of the support plate (15). Sliders (21) are slidably connected to both sides of the adjustment plates (20). A traction column (22) is slidably connected to one side of the slider (21). The end of the traction column (22) is fixedly connected to one side of the air guide pad (8).

2. A PTC electric heater according to claim 1, characterized in that: One end of the transverse plate (9) is threadedly connected to a threaded rod (11), both ends of which are rotatably mounted on the mounting plate (6). A motor (12) is fixedly connected to one side of the upper surface of the mounting plate (6), and the output end of the motor (12) is fixedly connected to one end of the threaded rod (11).

3. A PTC electric heater according to claim 2, characterized in that: One end of the transverse plate (9) is threadedly connected to a threaded rod two (13), both ends of the threaded rod two (13) are rotatably mounted on the transverse plate (9), and one end of the transverse plate (9) is fixedly connected to a motor three (14), the output end of the motor three (14) is fixedly connected to one end of the threaded rod two (13).

4. A PTC electric heater according to claim 1, characterized in that: The support plate (15) has a double-threaded rod (17) rotatably installed at both ends on one side. The two sides of the double-threaded rod (17) are threadedly connected to the ends of the adjustment plates (20) on both sides respectively. The support plate (15) has a motor (16) fixedly connected to one end. The output end of the motor (16) is fixedly connected to one end of the double-threaded rod (17).

5. A PTC electric heater according to claim 1, characterized in that: The adjusting plate (20) has a two-way threaded rod (19) rotatably mounted on one side. The two sides of the two-way threaded rod (19) are threadedly connected to the sliders (21) on both sides respectively. The adjusting plate (20) has a motor (18) fixedly connected to one end. The output end of the motor (18) is fixedly connected to one end of the two-way threaded rod (19).

6. A PTC electric heater according to claim 1, characterized in that: It also includes adjustment components; The adjustment assembly includes a motor (5) fixedly connected to one side of the upper end face of the lifting plate (4), and the output end of the motor (5) is fixedly connected to one end of the mounting plate (6).

7. A PTC electric heater according to claim 1, characterized in that: A threaded cylinder (29) is rotatably provided on one side of the upper end face of the base (1). A threaded rod (28) is threadedly connected to the inner cavity of the threaded cylinder (29). The upper end of the threaded rod (28) is fixedly connected to one side of the bottom of the lifting plate (4).

8. A PTC electric heater according to claim 7, characterized in that: A worm gear (30) is fixedly sleeved on the threaded cylinder (29). A worm (32) is rotatably installed on one side of the upper end face of the base (1). The worm (32) meshes with the worm gear (30). A motor (31) is fixedly connected to one side of the upper end face of the base (1). The output end of the motor (31) is fixedly connected to one end of the worm (32).

9. A PTC electric heater according to claim 1, characterized in that: It also includes a shake-off auxiliary component to prevent impurities from remaining inside the air guide pad (8); The shaking auxiliary component includes a hinge block (27) fixedly connected to one end of the traction column (22), a second connecting rod (26) rotatably disposed on one side of the hinge block (27), a first connecting rod (25) rotatably disposed on one end of the second connecting rod (26), a connecting block (23) fixedly connected to one side of the slider (21), and one end of the first connecting rod (25) rotatably disposed on the connecting block (23).

10. A PTC electric heater according to claim 9, characterized in that: The connecting block (23) is fixedly connected to one side of the motor six (24), and the output end of the motor six (24) is fixedly connected to one end of the connecting rod one (25).

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