Special voltage-withstanding PTC heating element for air conditioner

Abstract

The utility model relates to the technical field of air conditioner accessories, and discloses a special pressure-resistant PTC (Positive Temperature Coefficient) heating element for an air conditioner, which comprises a PTC element, an outer frame is fixed on the outer side of the PTC element, and polar plates are respectively fixed on two sides and the middle position of the top end of the PTC element. According to the special voltage-withstanding PTC heating element for the air conditioner, when the PTC heating element is installed and used, the first side plate and the second side plate can be correspondingly arranged in the first screw hole and the second screw hole through the installation bolts on the two sides of the outer frame respectively, and after the installation bolts are installed and fixed on the outer side of the outer frame, the PTC heating element is installed and used. Through the arrangement of the first supporting frame and the second supporting frame, auxiliary outer cover supporting protection can be carried out on the outer side of the PTC heating element, the structural strength of the exterior of the PTC heating element is improved, auxiliary supporting compression resistance protection can be carried out on the exterior of the PTC heating element, the compression resistance performance of the PTC heating element is improved, and the service life of the PTC heating element is prolonged. The problem that auxiliary supporting protection cannot be conveniently carried out on a PTC heating element structure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner accessories, and particularly relates to a special high-voltage-resistant PTC heating element for air conditioners. Background Technique

[0002] A PTC heating element is an electric heater composed of a PTC ceramic heating element and an aluminum tube, which has the advantages of small thermal resistance and high heat exchange efficiency, can achieve automatic constant temperature and power saving. When current passes through the thermosensitive material inside the PTC element during operation, since its resistance value increases with the increase of temperature, the power passing through the current decreases, thereby causing its own temperature to drop. When the heater device equipped with the PTC heating element starts to work, due to the low temperature, its resistance value is low, thus allowing a large current to pass through the heater, forming a large power output. As the temperature rises, the resistance value increases, the current decreases, and the power output also decreases accordingly, so that the temperature is maintained within a stable range. The PTC heating element is widely used in air conditioners to achieve the function of auxiliary electric heating. By using PTC, the heating effect and efficiency of the air conditioner can be improved, and heating can be achieved faster.

[0003] However, during the installation and use of the special high-voltage-resistant PTC heating element for air conditioners, most of the PTC heating elements are directly exposed outside. When they are collided, impacted or dropped by external objects, it is easy to cause deformation and damage of the PTC heating element, and seriously, it will lead to the scrapping of the PTC heating element. The compressive performance of the PTC heating element during installation and use is poor, there are deficiencies, and there are no measures to assist in supporting and protecting the structure of the PTC heating element.

[0004] Now, a new type of special high-voltage-resistant PTC heating element for air conditioners is proposed to solve the above deficiencies. Content of the Utility Model

[0005] The purpose of the utility model is to provide a special high-voltage-resistant PTC heating element for air conditioners to solve the problem of inconvenient auxiliary support and protection for the structure of the PTC heating element proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A special high-voltage-resistant PTC heating element for air conditioners, including a PTC element, an outer frame is fixed on the outside of the PTC element, electrode plates are respectively fixed on both sides and the middle position at the top of the PTC element, and support structures for compressive protection of the PTC heating element are respectively arranged at both ends of the PTC element;

[0007] The support structure includes a first side plate, a first support frame, mounting bolts, a second side plate, first screw holes, a second support frame, and second screw holes. The front ends of both sides of the outer frame are respectively vertically provided with first side plates, and a first support frame is fixedly welded between the front ends of the first side plates. The inner parts of the front ends of both sides of the outer frame are respectively provided with first screw holes. The rear ends of both sides of the outer frame are respectively vertically provided with second side plates, and a second support frame is fixedly welded between the rear ends of the second side plates. Mounting bolts are respectively arranged on one side of the first side plate and the second side plate. The inner parts of the rear ends of both sides of the outer frame are respectively provided with second screw holes.

[0008] Furthermore, three groups of the first screw holes and the second screw holes are respectively equidistantly arranged at the front ends and the rear ends of both sides of the outer frame. Multiple groups of the mounting bolts are respectively equidistantly arranged on one side of the first side plate and the second side plate. The mounting bolts respectively penetrate through the interiors of the first side plate and the second side plate.

[0009] Furthermore, multiple groups of the first support frame and the second support frame are respectively equidistantly arranged at the front end of the first side plate and the rear end of the second side plate.

[0010] Preferably, a first mounting frame is arranged at the front end of the outer frame, and a second mounting frame is arranged at the rear end of the outer frame. A metal mesh is fixed inside the first mounting frame and the second mounting frame. Fixing bolts are respectively arranged at the four corners of the front end of the first mounting frame and the four corners of the rear end of the second mounting frame. Threaded holes for mating installation with the fixing bolts are respectively opened inside the four corners of both ends of the outer frame.

[0011] Furthermore, the fixing bolts respectively penetrate through the interiors of the first mounting frame and the second mounting frame and are rotatably connected in the threaded holes.

[0012] Preferably, a top plate is arranged at the top end of the outer frame, and fixing heads are respectively fixed at the two sides and the middle position of the top end of the top plate. Through holes are opened inside the fixing heads. Insertion holes are respectively opened inside the two sides of the top end of the top plate, and connecting bolts are inserted into the insertion holes. Mounting holes for mating installation with the connecting bolts are respectively opened inside the two sides of the top end of the outer frame. Inner grooves are respectively opened at the two sides and the middle position of the top end of the top plate. The top end of the electrode plate penetrates through the interior of the through hole.

[0013] Furthermore, the bottom end of the connecting bolt penetrates through the interior of the insertion hole and is rotatably connected in the mounting hole. The through hole penetrates through the interior of the fixing head and is communicated with the interior of the inner groove.

[0014] Preferably, a mounting bottom plate is fixed at the bottom end of the outer frame, and a top groove is opened inside the top end of the outer frame.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The special high-voltage-resistant PTC heating element for air conditioners not only facilitates the auxiliary support and protection of the PTC heating element structure, realizes internal dust prevention for the PTC heating element, but also facilitates preventing contact short circuits at the wiring terminals of the PTC heating element;

[0016] (1) By providing an outer frame, a first side plate, a first support frame, mounting bolts, a second side plate, a first screw hole, a second support frame, and a second screw hole, when the PTC heating element is installed and used, on both sides of the outer frame, after the provided first side plate and second side plate are respectively installed and fixed on the outside of the outer frame, the provided first support frame and second support frame can provide auxiliary outer cover support and protection for the outside of the PTC heating element, improve the structural strength of the outside of the PTC heating element, and can provide auxiliary support and compressive protection for the outside of the PTC heating element;

[0017] (2) By providing an outer frame, threaded holes, a first mounting frame, fixing bolts, a metal mesh sheet, and a second mounting frame, when the PTC heating element is used, at both ends of the outer frame, after the provided first mounting frame and second mounting frame are installed at both ends of the outer frame, the metal mesh sheet provided inside the first mounting frame and the second mounting frame can provide auxiliary enclosure for the inside of the PTC element, can assist in blocking external dust and foreign objects, reduce the dust and foreign objects blown into and brought into the inside of the PTC element during the operation of the fan, and facilitate internal dust prevention for the PTC heating element;

[0018] (3) By providing an outer frame, a top plate, fixed heads, inner grooves, connecting bolts, insertion holes, through holes, and mounting holes, when the PTC heating element is installed, at the top of the outer frame, the three fixed heads fixed on the top plate can be respectively sleeved outside the electrode plates, and after the top plate is attached to the top of the outer frame, then by using the connecting bolts to penetrate the inside of the insertion holes and correspondingly screw into the mounting holes, the top plate can be fixedly installed on the top of the outer frame. The provided top plate and fixed heads can separate and isolate between the first side plates, can reduce the short-circuit faults caused by the mutual contact between the wirings at the wiring terminals, and prevent contact short circuits at the wiring terminals of the PTC heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front sectional structural schematic diagram of the present utility model;

[0020] Figure 2 is a top view structural schematic diagram of the second support frame of the present utility model;

[0021] Figure 3 is a front view structural schematic diagram of the first support frame of the present utility model;

[0022] Figure 4This is a front partial sectional structure schematic diagram of the first installation frame of the present utility model;

[0023] Figure 5 This is a side partial sectional structure schematic diagram of the first installation frame of the present utility model;

[0024] Figure 6 This is a top view structure schematic diagram of the top plate of the present utility model.

[0025] In the figure: 1, installation base plate; 2, outer frame; 3, first side plate; 4, PTC element; 5, first support; 6, installation bolt; 7, top plate; 8, electrode plate; 9, top groove; 10, fixed head; 11, inner groove; 12, connecting bolt; 13, threaded hole; 14, second side plate; 15, first screw hole; 16, second support; 17, second screw hole; 18, first installation frame; 19, fixed bolt; 20, metal mesh; 21, second installation frame; 22, jack; 23, through hole; 24, installation hole. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1: Please refer to Figures 1-6 , an air conditioner special voltage-resistant PTC heating element, including a PTC element 4, an outer frame 2 is fixed on the outside of the PTC element 4, electrode plates 8 are respectively fixed on both sides and the middle position at the top end of the PTC element 4, and support structures for compressive protection of the PTC heating element are respectively arranged at both ends of the PTC element 4;

[0028] The support structure includes a first side plate 3, a first support 5, an installation bolt 6, a second side plate 14, a first screw hole 15, a second support 16 and a second screw hole 17. First side plates 3 are respectively vertically arranged at the front ends of both sides of the outer frame 2, and a first support 5 is welded and fixed between the front ends of the first side plates 3. First screw holes 15 are respectively opened inside the front ends of both sides of the outer frame 2. Second side plates 14 are respectively vertically arranged at the rear ends of both sides of the outer frame 2, and a second support 16 is welded and fixed between the rear ends of the second side plates 14. Installation bolts 6 are respectively arranged on one side of the first side plate 3 and the second side plate 14. Second screw holes 17 are respectively opened inside the rear ends of both sides of the outer frame 2;

[0029] Three groups of first screw holes 15 and second screw holes 17 are equidistantly arranged at the front end and the rear end on both sides of the outer frame 2 respectively. Multiple groups of mounting bolts 6 are equidistantly arranged on one side of the first side plate 3 and the second side plate 14 respectively. The mounting bolts 6 penetrate through the interiors of the first side plate 3 and the second side plate 14 respectively. Multiple groups of first brackets 5 and second brackets 16 are equidistantly arranged at the front end of the first side plate 3 and the rear end of the second side plate 14 respectively.

[0030] Specifically, as Figures 1-3 shown, on both sides of the outer frame 2, the provided first side plate 3 and second side plate 14 can be respectively fixed to the corresponding first screw holes 15 and second screw holes 17 by using the mounting bolts 6. After being fixedly installed on the outside of the outer frame 2, through the provided first brackets 5 and second brackets 16, auxiliary outer cover support and protection can be carried out on the outside of the PTC heating element, improving the structural strength of the outside of the PTC heating element, being able to perform auxiliary support and compressive protection on the outside of the PTC heating element, and improving the voltage resistance performance of the PTC heating element.

[0031] Embodiment 2: A first mounting frame 18 is provided at the front end of the outer frame 2, and a second mounting frame 21 is provided at the rear end of the outer frame 2. A metal mesh 20 is fixed inside the first mounting frame 18 and the second mounting frame 21. Fixing bolts 19 are respectively provided at the four corners at the front end of the first mounting frame 18 and the four corners at the rear end of the second mounting frame 21. Threaded holes 13 for mating installation with the fixing bolts 19 are respectively opened inside the four corners at both ends of the outer frame 2. The fixing bolts 19 penetrate through the interiors of the first mounting frame 18 and the second mounting frame 21 respectively and are rotatably connected in the threaded holes 13.

[0032] Specifically, as Figure 1 、 Figure 4 and Figure 5 shown, at both ends of the outer frame 2, the provided first mounting frame 18 and second mounting frame 21 can be respectively fixedly installed at both ends of the outer frame 2 by using the fixing bolts 19 and the threaded holes 13. Through the metal mesh 20 provided inside the first mounting frame 18 and the second mounting frame 21, auxiliary enclosure can be carried out on the inside of the PTC element 4, auxiliary blocking of external dust and foreign objects can be performed, and the dust and foreign objects blown and brought into the inside of the PTC element 4 during the operation of the fan can be reduced.

[0033] Embodiment 3: A top plate 7 is provided at the top end of the outer frame 2, and fixing heads 10 are respectively fixed at both sides and the middle position of the top end of the top plate 7. A through hole 23 is formed inside the fixing head 10. Insertion holes 22 are respectively formed inside both sides of the top end of the top plate 7, and a connecting bolt 12 is inserted into the insertion hole 22. Mounting holes 24 which are matched with the connecting bolt 12 are respectively formed inside both sides of the top end of the outer frame 2. Inner grooves 11 are respectively formed at both sides and the middle position of the top end of the top plate 7. The top end of the electrode plate 8 penetrates through the inside of the through hole 23. The bottom end of the connecting bolt 12 penetrates through the inside of the insertion hole 22 and is rotatably connected in the mounting hole 24. The through hole 23 penetrates through the inside of the fixing head 10 and is communicated with the inside of the inner groove 11;

[0034] Specifically, as Figure 1 and Figure 6 shown, at the top end of the outer frame 2, the three fixing heads 10 fixed on the top plate 7 can be respectively sleeved outside the electrode plate 8. After the top plate 7 is attached to the top end of the outer frame 2, then by using the connecting bolt 12 to penetrate through the inside of the insertion hole 22 and correspondingly screw into the mounting hole 24, the top plate 7 can be fixedly installed at the top end of the outer frame 2. Through the provided top plate 7 and fixing heads 10, the first side plates 3 can be separated and isolated, and the short-circuit fault caused by the mutual contact between the wirings at the wiring terminals can be reduced, and the contact short circuit at the wiring terminals of the PTC heating element can be prevented.

[0035] A mounting bottom plate 1 is fixed at the bottom end of the outer frame 2, and a top groove 9 is formed inside the top end of the outer frame 2.

[0036] Working principle: When the PTC heating element of the present utility model is installed and used, on both sides of the outer frame 2, after the first side plate 3 and the second side plate 14 are installed and fixed on the outside of the outer frame 2, the auxiliary outer cover support and protection for the outside of the PTC heating element can be carried out through the provided first support frame 5 and the second support frame 16, improving the structural strength of the outside of the PTC heating element, and being able to carry out auxiliary support and compressive protection for the outside of the PTC heating element. At the same time, when the PTC heating element is in use, on both ends of the outer frame 2, after the provided first mounting frame 18 and the second mounting frame 21 are respectively fixed to both ends of the outer frame 2 by the fixing bolts 19 and the threaded holes 13, through the metal mesh 20 arranged inside the first mounting frame 18 and the second mounting frame 21, the inside of the PTC element 4 can be auxiliarily enclosed, and the external dust and foreign matters can be auxiliarily blocked. And when the PTC heating element is installed, on the top end of the outer frame 2, the three fixed heads 10 fixed on the top plate 7 can be respectively sleeved outside the electrode plate 8, and after the top plate 7 is attached to the top end of the outer frame 2, then by using the connecting bolt 12 to penetrate through the inside of the jack 22 and corresponding screw into the mounting hole 24, the top plate 7 can be fixedly installed on the top end of the outer frame 2. Through the provided top plate 7 and the fixed heads 10, the separation and isolation from contact short circuit between the electrode plates 8 can be carried out.

Claims

1. A pressure-resistant PTC heating element for air conditioners, comprising a PTC element (4), characterized in that: An outer frame (2) is fixed to the outside of the PTC element (4), pole plates (8) are respectively fixed to both sides and the middle of the top of the PTC element (4), and support structures for providing pressure resistance protection for the PTC heating element are respectively provided at both ends of the PTC element (4); The supporting structure comprises a first side plate (3), a first support frame (5), a mounting bolt (6), a second side plate (14), a first screw hole (15), a second support frame (16) and a second screw hole (17); the front ends of both sides of the outer frame (2) are respectively vertically provided with the first side plates (3), and the first support frame (5) is welded and fixed between the front ends of the first side plates (3); the interior of the front ends of both sides of the outer frame (2) is respectively provided with first screw holes (15); the rear ends of both sides of the outer frame (2) are respectively vertically provided with second side plates (14), and the rear ends of the second side plates (14) are welded and fixed between the rear ends of the second side plates (14); the first side plate (3) and the second side plate (14) are respectively provided with mounting bolts (6); and the interior of the rear ends of both sides of the outer frame (2) is respectively provided with second screw holes (17).

2. The pressure-resistant PTC heating element for air conditioner according to claim 1, characterized in that: The first screw holes (15) and the second screw holes (17) are respectively arranged in three groups at equal intervals at the front end and the rear end of both sides of the outer frame (2); the mounting bolts (6) are respectively arranged in multiple groups at equal intervals on one side of the first side plate (3) and the second side plate (14); and the mounting bolts (6) respectively penetrate the interior of the first side plate (3) and the second side plate (14).

3. The pressure-resistant PTC heating element for air conditioner according to claim 1, characterized in that: The first support frame (5) and the second support frame (16) are respectively arranged in multiple groups at equal intervals at the front end of the first side plate (3) and the rear end of the second side plate (14).

4. The pressure-resistant PTC heating element for air conditioner according to claim 1, characterized in that: A first mounting frame (18) is provided at the front end of the outer frame (2), and a second mounting frame (21) is provided at the rear end of the outer frame (2); metal mesh sheets (20) are fixed inside the first mounting frame (18) and the second mounting frame (21); fixing bolts (19) are respectively provided at the four corners at the front end of the first mounting frame (18) and the four corners at the rear end of the second mounting frame (21); and threaded holes (13) for matching with the fixing bolts (19) are respectively provided inside the four corners at both ends of the outer frame (2).

5. The pressure-resistant PTC heating element for air conditioner according to claim 4, characterized in that: The fixing bolts (19) respectively penetrate the interior of the first installation frame (18) and the second installation frame (21) and are rotatably connected in the threaded holes (13).

6. The pressure-resistant PTC heating element for air conditioner according to claim 1, characterized in that: A top plate (7) is provided at the top of the outer frame (2), and fixing heads (10) are fixed at both sides and the middle of the top of the top plate (7), a through hole (23) is provided inside the fixing head (10), plug holes (22) are provided inside the both sides of the top of the top plate (7), and connecting bolts (12) are inserted inside the plug holes (22), mounting holes (24) for matching with the connecting bolts (12) are provided inside the both sides of the top of the outer frame (2), inner grooves (11) are provided at both sides and the middle of the top of the top plate (7), and the top of the electrode plate (8) passes through the inside of the through hole (23).

7. The pressure-resistant PTC heating element for air conditioner according to claim 6, characterized in that: The bottom end of the connecting bolt (12) passes through the interior of the insertion hole (22) and is rotatably connected in the mounting hole (24); the through hole (23) passes through the interior of the fixing head (10) and is connected to the interior of the inner groove (11).

8. The pressure-resistant PTC heating element for air conditioner according to claim 1, characterized in that: A mounting base plate (1) is fixed to the bottom end of the outer frame (2), and a top groove (9) is provided inside the top end of the outer frame (2).

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