PTC (Positive Temperature Coefficient) heater with high-heat-resistance structure

Abstract

The invention relates to the technical field of PTC (Positive Temperature Coefficient) heaters, discloses a PTC heater with a high-heat-resistance structure, and solves the problems that an existing PTC heater with high heat resistance is inconvenient to install and cannot move after being positioned, so that heat cannot be supplied to different positions according to requirements, and the applicability is poor. A ventilation net is fixedly installed in a ventilation opening in the top of the heater shell, two supporting tables are slidably installed in the heater shell through sliding assemblies, a supporting arm is fixedly installed between one ends of the two supporting tables, a supporting frame is fixedly installed in the middle of the upper side of the supporting arm, and a driving motor is fixedly installed at the inner top of the supporting frame. Supporting strips are placed on the two supporting tables, and inserting holes are formed in the sides, away from each other, of the two supporting strips; the high-heat-resistance PTC heater is convenient to install, can be moved and adjusted after being positioned, can supply heat to different positions according to requirements, and has very good applicability.

Description

Technical Field

[0001] The present invention belongs to the technical field of PTC heaters, and specifically relates to a PTC heater with a high heat resistance structure. Background Art

[0002] A PTC heater with a high heat resistance structure is a heating element that utilizes the characteristics of a PTC thermistor; the PTC thermistor has significant temperature sensitivity, and when the temperature exceeds its Curie temperature, the resistance value will show a stepwise increase with the increase in temperature; this characteristic enables the PTC heater to automatically limit the temperature during the heating process, thereby avoiding safety hazards such as overheating and fires; a PTC heater with a high heat resistance structure is usually formed by bonding a PTC ceramic heating component and a corrugated aluminum strip with a high-temperature adhesive. The PTC ceramic material has excellent heat resistance and stability and can withstand long-term operation in a high-temperature environment; the high-temperature adhesive used to bond the PTC ceramic heating component and the corrugated aluminum strip has excellent heat resistance and stability and can maintain stable bonding performance in a high-temperature environment, thereby increasing the overall high heat resistance of the PTC heater; the existing high heat resistance PTC heaters are not convenient for installation and cannot be moved after being positioned, resulting in the inability to supply heat to different positions according to requirements, and their applicability is poor. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a PTC heater with a high heat resistance structure, effectively solving the problem that the existing high heat resistance PTC heaters in the above background art are not convenient for installation and cannot be moved after being positioned, resulting in the inability to supply heat to different positions according to requirements, and their applicability is poor.

[0004] To achieve the above object, the present invention provides the following technical solution: A PTC heater with a high heat resistance structure, including a heater housing. A ventilation net is fixedly installed in the ventilation opening at the top of the heater housing. Inside the heater housing, two support platforms are slidably installed through a sliding component. A support arm is fixedly installed between one ends of the two support platforms. In the middle of the upper side of the support arm, a support frame is fixedly installed. At the inner top of the support frame, a driving motor is fixedly installed. Support bars are placed on both support platforms. Jacks are opened on the sides of the two support bars away from each other. A connecting frame is fixedly installed between the two support bars. Inside the connecting frame, a number of corrugated aluminum strips are fixedly installed. A number of PTC ceramic heating elements are adhered between the number of corrugated aluminum strips through a high-temperature adhesive. The top of the connecting frame is fixedly installed with a mounting plate through four connecting rods. Three fans are fixedly installed on the top of the mounting plate. Plug rods are inserted on the sides of the two support platforms away from each other. Contact heads are fixedly installed at the ends of the two plug rods away from each other. Pushing strips are closely attached to the surfaces of the ends of the two contact heads away from each other. Plugs are fixedly installed at the ends of the two plug rods close to each other through stop plates. Springs are sleeved on the surfaces of the two plug rods. The two springs are respectively fixedly connected to the contact heads and one side of the support platforms. A transmission component is provided at the output end of the driving motor. The transmission component is in transmission connection with the two support platforms. When the driving motor operates, power is output to the two support platforms through the transmission component, so that the two support platforms move to adjust the heating position and synchronously lock the two support bars.

[0005] Preferably, the sliding component includes two sliding grooves. The two sliding grooves are opened on the inner walls of both sides of the heater housing. Sliding plates are slidably installed inside the two sliding grooves. The sides of the two sliding plates close to each other are fixedly connected to the two support platforms.

[0006] Preferably, fixed seats are fixedly installed on both sides of the top of the mounting plate. Sleeve seats are fixedly installed on the tops of the two fixed seats. Slide rods are inserted inside the two sleeve seats. One ends of the two slide rods are fixedly connected to the inner wall of one end of the heater housing through mounting seats.

[0007] Preferably, the transmission component includes a worm. The bottom of the worm is rotationally connected to the support arm through a shaft seat. A worm gear is meshed on the surface of the worm. A shaft rod is fixedly installed in the middle of the worm gear. Four sleeve shafts are rotationally installed on the surface of the shaft rod. The bottoms of the four sleeve shafts are fixedly connected to the upper side of the support arm through fixed heads.

[0008] Preferably, driving sprockets are fixedly installed at both ends of the shaft rod. Driven sprockets are provided on one side of the two driving sprockets. Positioning seats are rotationally installed on the sides of the two driven sprockets close to each other. The bottoms of the two positioning seats are respectively fixedly connected to the two support platforms. Chains are respectively meshed between the two driven sprockets and the two driving sprockets. Gears are fixedly installed on the sides of the two driven sprockets away from each other.

[0009] Preferably, racks are meshed and connected to the lower parts of the gears. One ends of the two racks are fixedly connected to one inner wall of the heater housing, and the other ends of the two racks are fixedly connected to the two inner walls on both sides of the heater housing through connecting arms.

[0010] Preferably, one sides of the two racks close to each other are fixedly connected to two pushing bars, and the two pushing bars are adapted to the two contact heads.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] (1) During installation, an operator places the connecting bars at both ends of the connecting frame from the opening of the heater housing on two supporting platforms, and sleeves two sliding sleeves onto two sliding rods through two fixing seats. Then, the operator starts the driving motor to drive the worm to rotate along the shaft seat. When the worm rotates, it drives the shaft rod to rotate inside four shaft sleeves through the worm gear. When the shaft rod rotates, it drives two driving sprockets to rotate. When the two driving sprockets rotate, they both drive two driven sprockets to rotate along two positioning seats through chains. When the two driven sprockets rotate, they drive two gears to rotate. When the two gears rotate, they will roll along the two racks, so that the two supporting platforms and the supporting arms can move. When the two supporting platforms move, they both drive the sliding plates to slide inside the sliding grooves, increasing the stability when the two supporting platforms move;

[0013] When the two supporting platforms move, the operator holds the connecting frame from one side by hand, so that the two supporting platforms can drive the connecting frame to move stably. When the connecting frame moves, it will drive a plurality of corrugated aluminum strips and a plurality of PTC ceramic heating elements to move. At the same time, the connecting frame will also drive the mounting plate to move through four connecting rods. When the mounting plate moves, it drives two sliding sleeves to slide along the surfaces of the two sliding rods through two fixing seats, increasing the stability when the mounting plate moves; Thus, the heating position can be adjusted by moving, improving the applicability;

[0014] (2) While the two supporting platforms move, they will also drive two contact heads to move through two insertion rods. When the two contact heads move, they will drive the two insertion rods to move towards each other through the pushing of the two pushing bars, and simultaneously squeeze the two springs, so that the two insertion rods have the effect of elastic reset. When the two insertion rods move towards each other, they drive two plugs to insert into two jacks through two blocking disks for limiting, so that locking installation can be quickly carried out;

[0015] (3) The high heat resistance PTC heater is easy to install, and can be adjusted by moving after being positioned, enabling it to supply heat to different positions according to requirements, with very good applicability. Description of the Drawings

[0016] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the accompanying drawings:

[0018] Figure 1 is a schematic structural diagram of the PTC heater with high heat resistance structure of the present invention;

[0019] Figure 2 is a schematic diagram of the internal structure of the heater housing of the present invention Figure 1 ;

[0020] Figure 3 is a schematic diagram of the internal structure of the heater housing of the present invention Figure 2 ;

[0021] Figure 4 is a schematic structural diagram of the corrugated aluminum strip and the PTC ceramic heating element of the present invention;

[0022] Figure 5 is a schematic structural diagram of the support platform and the support arm of the present invention;

[0023] Figure 6 is of the present invention Figure 2 Schematic enlarged structure diagram at position A in;

[0024] Figure 7 is of the present invention Figure 3 Schematic enlarged structure diagram at position B in;

[0025] Figure 8 is a schematic structural diagram of the plug rod of the present invention;

[0026] In the figure: 1. Heater housing; 2. Ventilation net; 3. Chute; 4. Slide plate; 5. Support platform; 6. Spring; 7. Connection frame; 8. Support bar; 9. Insertion hole; 10. Support arm; 11. Corrugated aluminum strip; 12. PTC ceramic heating element; 13. Connecting rod; 14. Mounting plate; 15. Fan; 16. Fixed seat; 17. Slide sleeve; 18. Slide rod; 19. Mounting seat; 20. Support frame; 21. Driving motor; 22. Worm; 23. Axle seat; 24. Worm gear; 25. Shaft rod; 26. Bush; 27. Fixed head; 28. Driving sprocket; 29. Positioning seat; 30. Driven sprocket; 31. Chain; 32. Gear; 33. Rack; 34. Connecting arm; 35. Pushing bar; 36. Plug; 37. Retaining disc; 38. Plug rod; 39. Contact head. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1 is given by Figures 1 to 8 The present invention includes a heater housing 1. A ventilation net 2 is fixedly installed in the ventilation opening at the top of the heater housing 1. Two support platforms 5 are slidably installed inside the heater housing 1 through a sliding assembly. A support arm 10 is fixedly installed between one ends of the two support platforms 5. A support frame 20 is fixedly installed in the middle on the upper side of the support arm 10. A driving motor 21 is fixedly installed on the inner top of the support frame 20. Support bars 8 are placed on both of the two support platforms 5. Plug holes 9 are opened on the sides of the two support bars 8 away from each other. A connecting frame 7 is fixedly installed between the two support bars 8. A plurality of corrugated aluminum strips 11 are fixedly installed inside the connecting frame 7. A plurality of PTC ceramic heating elements 12 are adhered between the plurality of corrugated aluminum strips 11 through a high-temperature adhesive. The top of the connecting frame 7 is fixedly installed with a mounting plate 14 through four connecting rods 13. Three fans 15 are fixedly installed on the top of the mounting plate 14;

[0029] When the plurality of PTC ceramic heating elements 12 operate, they will conduct heat to the plurality of corrugated aluminum strips 11. At the same time, when the three fans 15 rotate, they can inhale air flow and blow it into the corrugated aluminum strips 11. The air is heated by the corrugated aluminum strips 11 to blow out hot air for heating;

[0030] Plug rods 38 are inserted into the sides of the two support platforms 5 away from each other. Contact heads 39 are fixedly installed at the ends of the two plug rods 38 away from each other. Pushing strips 35 are closely attached to the surfaces of the ends of the two contact heads 39 away from each other. Plug heads 36 are fixedly installed at the ends of the two plug rods 38 close to each other through retaining plates 37. Springs 6 are sleeved on the surfaces of the two plug rods 38. The two springs 6 are respectively fixedly connected to the contact heads 39 and one side of the support platforms 5. A transmission assembly is provided at the output end of the driving motor 21. The transmission assembly is in transmission connection with the two support platforms 5. When the driving motor 21 operates, it outputs power to the two support platforms 5 through the transmission assembly, so that the two support platforms 5 move to adjust the heating position and synchronously lock the two support bars 8;

[0031] The sliding assembly includes two sliding grooves 3. The two sliding grooves 3 are opened on the inner walls of the two sides of the heater housing 1. Slide plates 4 are slidably installed inside the two sliding grooves 3. One sides of the two slide plates 4 close to each other are fixedly connected to the two support platforms 5;

[0032] On both sides of the top of the mounting plate 14, fixing seats 16 are fixedly installed. On the top of both fixing seats 16, sliding sleeves 17 are fixedly installed. Inside both sliding sleeves 17, sliding rods 18 are inserted. One end of both sliding rods 18 is fixedly connected to the inner wall of one end of the heater housing 1 through a mounting seat 19.

[0033] During installation, the operator places the connecting strips at both ends of the connecting frame 7 on the two supporting platforms 5 from the opening of the heater housing 1, and sleevs the two sliding sleeves 17 onto the two sliding rods 18 through the two fixing seats 16. Then the operator starts the driving motor 21 to drive the transmission assembly to operate. When the transmission assembly operates, it drives the two supporting platforms 5 and the supporting arms 10 to move. When the two supporting platforms 5 move, they both drive the sliding plate 4 to slide inside the sliding groove 3, increasing the stability when the two supporting platforms 5 move. When the two supporting platforms 5 move, the operator holds the connecting frame 7 from one side by hand, so that the two supporting platforms 5 can stably drive the connecting frame 7 to move. When the connecting frame 7 moves, it drives a plurality of corrugated aluminum strips 11 and a plurality of PTC ceramic heating elements 12 to move. At the same time, the connecting frame 7 also drives the mounting plate 14 to move through the four connecting rods 13. When the mounting plate 14 moves, it drives the two sliding sleeves 17 to slide along the surfaces of the two sliding rods 18 through the two fixing seats 16, increasing the stability when the mounting plate 14 moves; thus, the heating position can be adjusted by moving, improving the applicability;

[0034] While the two supporting platforms 5 are moving, they also drive the two contact heads 39 to move through the two inserting rods 38. When the two contact heads 39 move, they drive the two inserting rods 38 to move towards each other by the pushing of the two pushing strips 35, and simultaneously squeeze the two springs 6, so that the two inserting rods 38 have the effect of elastic reset. When the two inserting rods 38 move towards each other, they drive the two plugs 36 to insert into the two jacks 9 through the two retaining disks 37 for limiting, so that the locking installation can be quickly carried out; making this high heat resistance PTC heater easy to install, and it can be adjusted by moving after positioning, enabling it to supply heat to different positions according to requirements, with very good applicability.

[0035] Embodiment 2, on the basis of Embodiment 1, the transmission assembly includes a worm 22. The bottom of the worm 22 is rotatably connected to the supporting arm 10 through a shaft seat 23. The surface of the worm 22 is meshed with a worm gear 24. The middle of the worm gear 24 is fixedly installed with a shaft rod 25. The surface of the shaft rod 25 is rotatably installed with four shaft sleeves 26. The bottom of the four shaft sleeves 26 is fixedly connected to the upper side of the supporting arm 10 through fixing heads 27;

[0036] The operator starts the driving motor 21 to drive the worm 22 to rotate along the shaft seat 23. When the worm 22 rotates, it drives the shaft rod 25 to rotate inside the four shaft sleeves 26 through the worm gear 24;

[0037] Both ends of the shaft rod 25 are fixedly installed with driving sprockets 28. On one side of each of the two driving sprockets 28, there is a driven sprocket 30. On the side where the two driven sprockets 30 are close to each other, there is a positioning seat 29 rotatably installed. The bottoms of the two positioning seats 29 are respectively fixedly connected to the two support platforms 5. Between the two driven sprockets 30 and the two driving sprockets 28, there are chain 31 meshed and connected respectively. On the side where the two driven sprockets 30 are away from each other, there is a gear 32 fixedly installed.

[0038] When the shaft rod 25 rotates, it drives the two driving sprockets 28 to rotate. When the two driving sprockets 28 rotate, they both drive the two driven sprockets 30 to rotate along the two positioning seats 29 through the chain 31. When the two driven sprockets 30 rotate, they drive the two gears 32 to rotate.

[0039] The lower parts of the gears 32 are meshed and connected with racks 33. One end of each of the two racks 33 is fixedly connected to the inner wall of one end of the heater housing 1. The other end of each of the two racks 33 is fixedly connected to the inner walls on both sides of the heater housing 1 through a connecting arm 34. On the side where the two racks 33 are close to each other, there is a pushing strip 35 fixedly connected. The two pushing strips 35 are adapted to the two contact heads 39.

[0040] When the two gears 32 rotate, they will roll along the two racks 33, and thus the two support platforms 5 and the support arms 10 can be moved.

[0041] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PTC heater with a high heat resistance structure, comprising a heater housing (1), characterized in that: A ventilation net (2) is fixedly installed in the ventilation opening at the top of the heater housing (1); two support platforms (5) are slidably installed inside the heater housing (1) through a sliding assembly; a support arm (10) is fixedly installed between one end of the two support platforms (5); a support frame (20) is fixedly installed in the middle of the upper side of the support arm (10); a driving motor (21) is fixedly installed on the inner top of the support frame (20); support bars (8) are placed on both support platforms (5); a socket (9) is provided on the side of the two support bars (8) away from each other; a connecting frame (7) is fixedly installed between the two support bars (8); a plurality of corrugated aluminum bars (11) are fixedly installed inside the connecting frame (7); a plurality of PTC ceramic heating elements (12) are adhered between the plurality of corrugated aluminum bars (11) by means of a high-temperature adhesive; a mounting plate (14) is fixedly installed on the top of the connecting frame (7) through four connecting rods (13) Three fans (15) are fixedly installed on the top of the mounting plate (14); a plug rod (38) is inserted into the side of the two support platforms (5) away from each other; a contact head (39) is fixedly installed at the end of the two plug rods (38) away from each other; a pushing strip (35) is tightly attached to the surface of the end of the two contact heads (39) away from each other; a plug (36) is fixedly installed at the end of the two plug rods (38) close to each other through a baffle (37); a spring (6) is sleeved on the surface of the two plug rods (38); the two springs (6) are respectively fixedly connected to the contact head (39) and one side of the support platform (5); a transmission component is provided at the output end of the drive motor (21); the transmission component is transmission-connected to the two support platforms (5); when the drive motor (21) is running, power is output to the two support platforms (5) through the transmission component, so that the two support platforms (5) move to adjust the heating position and synchronously lock the two support strips (8).

2. The PTC heater with high heat resistance structure according to claim 1, characterized in that: The sliding assembly comprises two sliding grooves (3), the two sliding grooves (3) are arranged on the inner walls of the heater housing (1) on both sides, and slide plates (4) are slidably installed inside the two sliding grooves (3), and the sides of the two slide plates (4) close to each other are fixedly connected to two support platforms (5).

3. The PTC heater with high heat resistance structure according to claim 1, characterized in that: Fixed seats (16) are fixedly mounted on both sides of the top of the mounting plate (14), sliding sleeves (17) are fixedly mounted on the tops of the two fixed seats (16), sliding rods (18) are inserted into the interiors of the two sliding sleeves (17), and one end of the two sliding rods (18) is fixedly connected to the inner wall of one end of the heater housing (1) through the mounting seat (19).

4. The PTC heater with high heat resistance structure according to claim 1, characterized in that: The transmission assembly comprises a worm (22), the bottom of the worm (22) is rotatably connected to the support arm (10) via a shaft seat (23), the surface of the worm (22) is meshingly connected with a worm wheel (24), a shaft (25) is fixedly mounted in the middle of the worm wheel (24), four shaft sleeves (26) are rotatably mounted on the surface of the shaft (25), and the bottoms of the four shaft sleeves (26) are fixedly connected to the upper side of the support arm (10) via a fixing head (27).

5. The PTC heater with high heat resistance structure according to claim 4, characterized in that: Both ends of the shaft (25) are fixedly mounted with driving sprockets (28), one side of the two driving sprockets (28) is provided with a driven sprocket (30), the sides of the two driven sprockets (30) close to each other are rotatably mounted with positioning seats (29), the bottoms of the two positioning seats (29) are respectively fixedly connected to the two support platforms (5), the two driven sprockets (30) and the two driving sprockets (28) are respectively meshed with chains (31), and the sides of the two driven sprockets (30) away from each other are fixedly mounted with gears (32).

6. The PTC heater with high heat resistance structure according to claim 5, characterized in that: The lower part of the gear (32) is meshedly connected with a rack (33), one end of the two racks (33) is fixedly connected to the inner wall of one end of the heater shell (1), and the other ends of the two racks (33) are fixedly connected to the inner walls of both sides of the heater shell (1) through connecting arms (34).

7. The PTC heater with high heat resistance structure according to claim 6, characterized in that: The sides of the two racks (33) that are close to each other are fixedly connected to two pushing strips (35), and the two pushing strips (35) are matched with two contact heads (39).

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