A bending-resistant PTC heater

Abstract

The utility model is suitable for PTC heater technical field provides a kind of bending-resistant PTC heater, including: heater body, the heater body includes the heater main body in middle, the both sides of heater main body are respectively provided with fin;Two the side of fin away from each other is respectively provided with connecting piece;Two the side of connecting piece away from each other is respectively provided with reinforcing sheet metal, and the bending-resistant capacity of the device improves, the contact area maintenance rate of heating element and fin improves, and the heat conduction efficiency improves, reinforcing sheet metal and reinforcing side plate are arranged on the both sides of heater main body, form rigid support ring, further improve the bending stiffness of whole, by setting first recess, first lug, second recess and second lug, break stress concentration, disperse the longitudinal stress generated by thermal expansion, avoid the deformation accumulation in single direction.

Description

Technical Field

[0001] This utility model belongs to the field of PTC heater technology, and particularly relates to a bending-resistant PTC heater. Background Technology

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

[0003] The existing technology still has the following shortcomings:

[0004] Existing PTC heaters are prone to bending and deformation during long-term use due to thermal expansion and contraction and mechanical stress. This deformation leads to poor contact between the heating element and the heat sink, reducing heat transfer efficiency and affecting heating performance and service life. Current technologies typically employ simple metal supports or fixing structures, but these are often insufficient to effectively resist the stress generated by long-term thermal cycling. Utility Model Content

[0005] This invention provides a bending-resistant PTC heater, aiming to solve the problem that existing PTC heaters are prone to bending deformation during long-term use due to thermal expansion and contraction and mechanical stress. This deformation leads to poor contact between the heating element and the heat sink, reducing heat transfer efficiency and affecting heating performance and service life. Existing technologies typically use simple metal supports or fixing structures, but these are often unable to effectively resist the stress generated by long-term thermal cycling.

[0006] This utility model is implemented as follows: a bending-resistant PTC heater includes: a heater body, the heater body including a heater core located in the middle, heat sinks respectively provided on both sides of the heater core; connecting pieces respectively provided on the side of the two heat sinks that are far apart from each other; and reinforcing sheet metal respectively provided on the side of the two connecting pieces that are far apart from each other.

[0007] Preferably, fixing components are provided on both sides of the heater body; the two connecting pieces are respectively provided with a plurality of first protrusions and a plurality of first grooves on the side close to the two reinforcing sheet metals; the plurality of first protrusions and the plurality of first grooves are arranged alternately.

[0008] Preferably, the two reinforcing sheet metal pieces are provided with a plurality of second grooves and a plurality of second protrusions on one side near the two connecting pieces, and the plurality of second grooves and the plurality of second protrusions are arranged alternately.

[0009] Preferably, a plurality of the first protrusions are respectively inserted into a plurality of the first grooves, and a plurality of the second protrusions are respectively inserted into a plurality of the second grooves.

[0010] Preferably, two of the reinforcing sheet metals are fixedly connected to each other at one end, and two of the four reinforcing side plates are in contact with each other at the two closest sides.

[0011] Preferably, each of the four reinforced side plates has a positioning groove on every two left and right distributed reinforced side plates, and a positioning block is fixedly connected to each of the four reinforced side plates, with two positioning blocks respectively inserted into two positioning grooves.

[0012] Preferably, both fixing components include a first C-shaped block and a second C-shaped block respectively disposed on the front and rear sides of the heater body, and the two sides of the two reinforcing sheet metal are respectively located in the opening ends of the first C-shaped block and the second C-shaped block.

[0013] Preferably, each of the two fixing components further includes shrinkage grooves formed at the upper and lower ends of the two second C-shaped blocks near the two first C-shaped blocks. The two sides of the two first C-shaped blocks are respectively inserted into the four shrinkage grooves. The upper and lower ends of the two first C-shaped blocks are respectively provided with a plurality of threaded limiting holes. The upper and lower ends of the two second C-shaped blocks are respectively provided with screws. The upper and lower ends of the two second C-shaped blocks are respectively provided with threaded holes. The four threaded holes are respectively connected to the four shrinkage grooves. The four screws are respectively threadedly connected to the four threaded holes. The extended ends of the four screws pass through the four threaded holes and are threadedly connected to the four threaded limiting holes at corresponding positions.

[0014] Compared with the prior art, the embodiments of this application have the following main advantages:

[0015] This device improves bending resistance, increases the contact area retention rate between the heating element and the heat sink, and improves heat conduction efficiency. Reinforced sheet metal and side plates are set on both sides of the heater body to form a rigid support ring, which further improves the overall bending stiffness. By setting the first groove, the first protrusion, the second groove, and the second protrusion, stress concentration is broken, the longitudinal stress generated by thermal expansion is dispersed, and deformation accumulation in one direction is avoided. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a top view cross-sectional structural diagram of the present invention;

[0019] Figure 4 This is a side view sectional structural diagram of the present invention;

[0020] Figure 5 This is a utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0021] Figure 6 This is a utility model Figure 4 Enlarged structural diagram at point B;

[0022] In the diagram: 1. Heater body; 2. Heater main body; 3. Heat sink; 4. Connecting piece; 5. Reinforcing sheet metal; 6. Fixing component; 7. Second groove; 8. Reinforced side plate; 9. Positioning groove; 10. Positioning block; 11. First C-shaped block; 12. Second C-shaped block; 13. Threaded limiting hole; 14. Screw; 15. Threaded hole; 16. Second protrusion; 17. First groove; 18. Shrinkage groove; 19. First protrusion. Detailed Implementation

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] This utility model embodiment provides a bending-resistant PTC heater, such as... Figure 1-6 As shown, it includes: a heater body 1, which includes a heater body 2 located in the middle, and heat sinks 3 are respectively provided on both sides of the heater body 2; connecting pieces 4 are respectively provided on the side of the two heat sinks 3 that are far apart from each other; and reinforcing sheet metal 5 is respectively provided on the side of the two connecting pieces 4 that are far apart from each other.

[0026] It should be noted that, due to thermal expansion and contraction and mechanical stress, existing PTC heaters are prone to bending deformation during long-term use. This deformation leads to poor contact between the heating element and the heat sink 3, reducing heat transfer efficiency and affecting heating performance and service life. Existing technologies typically use simple metal supports or fixing structures, but these often cannot effectively resist the stress generated by long-term thermal cycling. This solution improves the bending resistance of the device, increases the contact area retention rate between the heating element and the heat sink 3, and improves heat transfer efficiency. Reinforcing sheet metal 5 and reinforced side plates 8 are set on both sides of the heater body 2 to form a rigid support ring, further improving the overall bending stiffness. By setting the first groove 17, the first protrusion 19, the second groove 7, and the second protrusion 16, stress concentration is broken, the longitudinal stress generated by thermal expansion is dispersed, and deformation accumulation in one direction is avoided.

[0027] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, fixing components 6 are respectively provided on both sides of the heater body 1; two connecting pieces 4 are respectively provided with a number of first protrusions 19 and a number of first grooves 17 on the side close to the two reinforcing sheet metals 5; the number of first protrusions 19 and the number of first grooves 17 are arranged alternately.

[0028] In this embodiment, stress concentration is broken, longitudinal stress generated by thermal expansion is dispersed, and deformation accumulation in a single direction is avoided.

[0029] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, the two reinforcing sheet metals 5 are provided with a number of second grooves 7 and a number of second protrusions 16 on the side near the two connecting pieces 4, and the number of second grooves 7 and the number of second protrusions 16 are arranged alternately.

[0030] In this embodiment, staggered positioning is facilitated.

[0031] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, several first protrusions 19 are respectively inserted into several first grooves 17, and several second protrusions 16 are respectively inserted into several second grooves 7.

[0032] In this embodiment, it is convenient to add a fixed position.

[0033] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, two reinforcing sheet metals 5 are fixedly connected to one end of each other on both sides, and four reinforcing side plates 8 are in contact with each other, with each pair of reinforcing side plates 8 close to one side.

[0034] In this embodiment, reinforced sheet metal 5 and reinforced side plates 8 are provided on both sides of the heater body 2 to form a rigid support ring, which further improves the overall bending stiffness.

[0035] In a further preferred embodiment of this utility model, such as Figure 1-5 As shown, each of the four reinforced side plates 8 has a positioning groove 9 on each of the two left and right reinforced side plates 8, and a positioning block 10 is fixedly connected to each of the two left and right reinforced side plates 8, and the two positioning blocks 10 are respectively inserted into the two positioning grooves 9.

[0036] In this embodiment, it is convenient to reinforce the connection.

[0037] In a further preferred embodiment of this utility model, such as Figure 1-6 As shown, both fixing components 6 include a first shaped block 11 and a second shaped block 12 respectively disposed on the front and rear sides of the heater body 1, and the two sides of the two reinforcing sheet metal 5 are respectively located in the opening ends of the first shaped block 11 and the second shaped block 12.

[0038] In this embodiment, it is convenient for subsequent fixation.

[0039] In a further preferred embodiment of this utility model, such as Figure 1-6 As shown, both fixing components 6 also include shrinkage grooves 18 formed at the upper and lower ends of the two second C-shaped blocks 12 near the two first C-shaped blocks 11. The two sides of the two first C-shaped blocks 11 are respectively inserted into the four shrinkage grooves 18. The upper and lower ends of the two first C-shaped blocks 11 are respectively provided with a plurality of threaded limiting holes 13. The upper and lower ends of the two second C-shaped blocks 12 are respectively provided with screws 14. The upper and lower ends of the two second C-shaped blocks 12 are respectively provided with threaded holes 15. The four threaded holes 15 are respectively connected to the four shrinkage grooves 18. The four screws 14 are respectively threaded to the four threaded holes 15. The extended ends of the four screws 14 pass through the four threaded holes 15 and are threaded to the four threaded limiting holes 13 at the corresponding positions.

[0040] In this embodiment, it is convenient to fix and connect heater bodies 1 of different sizes.

[0041] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0042] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0043] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units described above may be implemented in other ways in practice. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0044] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A bending-resistant PTC heater, characterized in that, include: The heater body includes a heater body located in the middle, and heat sinks are respectively provided on both sides of the heater body; Connecting plates are provided on the sides of the two heat sinks that are far apart from each other; Reinforcing sheet metal is provided on the side of the two connecting pieces that are far apart from each other.

2. The bending-resistant PTC heater as described in claim 1, characterized in that, Fixing components are provided on both sides of the heater body; Each of the two connecting pieces has a number of first protrusions and a number of first grooves on one side near the two reinforcing sheet metal pieces; Several first protrusions and several first grooves are arranged alternately.

3. The bending-resistant PTC heater as described in claim 2, characterized in that, Several second grooves and several second protrusions are respectively provided on one side of the two reinforcing sheet metal near the two connecting pieces, and the several second grooves and several second protrusions are arranged alternately.

4. A bending-resistant PTC heater as described in claim 3, characterized in that, Several first protrusions are respectively inserted into several first grooves, and several second protrusions are respectively inserted into several second grooves.

5. A bending-resistant PTC heater as described in claim 1, characterized in that, Two reinforcing sheet metal panels are fixedly connected to each other on both sides, close to one end. There are four reinforcing side panels, with each pair of panels close to one side in contact with each other.

6. A bending-resistant PTC heater as described in claim 5, characterized in that, The four reinforced side plates are provided with positioning grooves on each of the two left and right reinforced side plates. Positioning blocks are fixedly connected to each of the two left and right reinforced side plates, and the two positioning blocks are respectively inserted into the two positioning grooves.

7. A bending-resistant PTC heater as described in claim 2, characterized in that, Both fixing components include a first C-shaped block and a second C-shaped block respectively disposed on the front and rear sides of the heater body, with the two sides of the two reinforcing sheet metal located in the opening ends of the first C-shaped block and the second C-shaped block respectively.

8. A bending-resistant PTC heater as described in claim 7, characterized in that, Both fixing components also include shrinkage grooves opened at the upper and lower ends of the two second C-shaped blocks near the two first C-shaped blocks. The two sides of the two first C-shaped blocks are respectively inserted into the four shrinkage grooves. The upper and lower ends of the two first C-shaped blocks are respectively provided with several threaded limiting holes. The upper and lower ends of the two second C-shaped blocks are respectively provided with screws. The upper and lower ends of the two second C-shaped blocks are respectively provided with threaded holes. The four threaded holes are respectively connected to the four shrinkage grooves. The four screws are respectively threaded to the four threaded holes. The extended ends of the four screws pass through the four threaded holes and are threaded to the four threaded limiting holes at the corresponding positions.

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