Low-power high-efficiency heat-gathering type PTC (Positive Temperature Coefficient) heater structure

Abstract

The utility model relates to the technical field of PTC (Positive Temperature Coefficient) heaters, and provides a low-power high-efficiency heat-gathering type PTC heater structure, which comprises a heating sheet, a top shell movably sleeved on the top of the heating sheet, and a heat-gathering type PTC heater structure arranged on the top of the top shell, during use, through cooperation of the first bolts, the positioning columns and the limiting columns, the whole structure can be conveniently disassembled when needed, so that when equipment breaks down or needs to be maintained, personnel can quickly disassemble the top shell and replace or repair the top shell, and the maintenance efficiency is improved. The whole equipment does not need to be replaced, time and cost are saved, meanwhile, personnel can easily complete assembling of the heating piece, the bottom shell and the top shell, the heating piece and the shell are matched more tightly, assembling steps are simplified, and dependence on tools and manpower is reduced.

Description

Technical Field

[0001] This utility model relates to the field of PTC heater technology, and in particular to a low-power, high-efficiency heat-concentrating PTC heater structure. Background Technology

[0002] A low-power, high-efficiency heat-concentrating PTC heater is a type of heater that utilizes positive temperature coefficient (PTC) materials. PTC materials are characterized by an increase in resistance as the temperature rises, thus exhibiting self-limiting temperature characteristics.

[0003] Existing low-power, high-efficiency heat-concentrating PTC heaters typically consist of a heating element, a housing, and a power connection cable. In terms of design, the PTC heating element is usually integrally molded with the housing. This integrated design is primarily to avoid poor contact or loosening between components, improving the reliability and stability of the equipment. However, this design also brings inconvenience in maintenance. If the heating element is damaged, because it is tightly integrated with the housing, maintenance personnel usually need to replace the entire PTC heater or disassemble the damaged housing for repair. This not only increases maintenance time and labor intensity but may also lead to unnecessary waste of resources, as in actual maintenance, only the heating element may be damaged while other parts remain intact. Therefore, although this integrated structure design improves the overall stability of the equipment in initial use, the cost and workload of maintenance are high when a failure occurs, making it not only inefficient but also potentially causing unnecessary material waste. Utility Model Content

[0004] The purpose of this invention is to address the problem that in the prior art, PTC heating elements are usually integrally molded with the housing. Although this improves the overall stability of the equipment in the initial use, the cost and workload of maintenance are relatively large when a failure occurs. This is not only inefficient but may also cause unnecessary material waste.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a low-power, high-efficiency heat-concentrating PTC heater structure, including a heating element, a bottom shell movably fitted onto the bottom of the heating element, and a connecting groove formed on the top of the bottom shell, further comprising:

[0006] The top shell is movably fitted onto the top of the heating element, and the bottom of the top shell is movably connected to the top of the bottom shell;

[0007] A connecting post is fixedly installed at the bottom of the top shell. The connecting post matches the connecting groove. A sealing gasket is provided at the bottom of the connecting post, and the sealing gasket is movably embedded inside the connecting groove.

[0008] Four positioning posts are fixedly installed on the outer surface of the bottom shell, and the top shell is movably connected to the inner side of the multiple positioning posts.

[0009] In a preferred embodiment, each of the four positioning posts is slidably connected to a limiting post, and each of the four limiting posts is fixedly installed with a return spring on its outer side.

[0010] The technical effect of adopting the above-mentioned further solution is that the return spring can be extended by pulling the limit post.

[0011] In a preferred embodiment, the other ends of the four reset springs are fixedly mounted on the outer surface of the positioning post, and the bottoms of the four limiting posts are movably connected to the top of the top shell.

[0012] The technical effect of adopting the above-mentioned further solution is that it allows the limiting post to slide on the top of the top shell.

[0013] In a preferred embodiment, each of the four limiting posts is internally threaded with a first bolt, and the top of the top shell is provided with a first threaded groove around its perimeter. Each of the four first bolts is matched with one of the four first threaded grooves.

[0014] The technical effect of adopting the above-mentioned further solution is that the first bolt can be embedded into the interior of the first threaded groove.

[0015] In a preferred embodiment, both the bottom shell and the top shell are provided with soft pads inside, and a power cord is provided on the right side of the heating element.

[0016] The technical effect of adopting the above-mentioned further solution is that it allows the soft pad to adhere to the outer surface of the power cord.

[0017] In a preferred embodiment, the inner surfaces of both pads are movably connected to the outer surface of the power cord, and the right sides of both the bottom shell and the top shell are provided with fixing members, both of which are located on the outer side of the pads.

[0018] The technical effect of adopting the above-mentioned further solution is that the soft pad can be squeezed by the fixing component.

[0019] In one preferred embodiment, a second bolt is threaded to both sides of the interior of one of the fasteners, and a second threaded groove is provided on both sides of the interior of the other fastener.

[0020] The technical effect of adopting the above-mentioned further solution is that it allows the second bolt to be embedded inside the second threaded groove.

[0021] In a preferred embodiment, both second bolts are matched with the second threaded groove, and the outer surfaces of both second bolts are threaded with nuts.

[0022] The technical effect of adopting the above-mentioned further solution is that the nut can be fitted onto the outer surface of the second bolt.

[0023] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0024] This invention, through the cooperation of the first bolt, positioning post, and limiting post, allows for convenient disassembly of the overall structure when needed. This enables personnel to quickly disassemble and replace or repair the top shell when the equipment malfunctions or requires maintenance, without replacing the entire equipment, saving time and costs. Simultaneously, personnel can easily assemble the heating element with the bottom and top shells, resulting in a tighter fit between the heating element and the shell. This simplifies assembly steps, reduces reliance on tools and manual labor, and solves the problem of existing technologies where PTC heating elements are typically integrally molded with the shell. While this improves the overall stability of the equipment in initial use, it leads to higher maintenance costs and workload in case of malfunctions, is not only inefficient but may also cause unnecessary material waste. Attached Figure Description

[0025] Figure 1 A rear-view three-dimensional structural diagram of a low-power, high-efficiency heat-concentrating PTC heater structure provided by this utility model;

[0026] Figure 2 A partial three-dimensional structural diagram of a low-power, high-efficiency heat-concentrating PTC heater provided by this utility model. Figure 1 ;

[0027] Figure 3 A partial three-dimensional structural diagram of a low-power, high-efficiency heat-concentrating PTC heater provided by this utility model. Figure 2 ;

[0028] Figure 4 A partial three-dimensional structural diagram of a low-power, high-efficiency heat-concentrating PTC heater provided by this utility model. Figure 3 ;

[0029] Figure 5 This utility model provides a three-dimensional cross-sectional view of the bottom shell of a low-power, high-efficiency heat-concentrating PTC heater.

[0030] Legend:

[0031] 1. Heating element; 101. Bottom shell; 102. Connecting groove; 103. Top shell; 104. Connecting post; 105. Sealing gasket; 106. Positioning post; 107. Limiting post; 108. Return spring; 109. First bolt; 110. First threaded groove; 2. Power cord; 201. Soft pad; 202. Fixing component; 203. Second bolt; 204. Second threaded groove; 205. Nut. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1, please refer to Figure 1-5 This utility model provides a technical solution: a low-power, high-efficiency heat-concentrating PTC heater structure, including a heating element 1, a bottom shell 101 movably fitted onto the bottom of the heating element 1, and a connecting groove 102 formed on the top of the bottom shell 101; a top shell 103 movably fitted onto the top of the heating element 1, with the bottom of the top shell 103 movably connected to the top of the bottom shell 101; a connecting post 104 fixedly installed at the bottom of the top shell 103, the connecting post 104 matching the connecting groove 102, a sealing gasket 105 provided at the bottom of the connecting post 104, the sealing gasket 105 movably embedded inside the connecting groove 102; and four positioning posts 106, all fixed. Installed on the outer surface of the bottom shell 101, the top shell 103 is movably connected to the inner side of multiple positioning posts 106. Each of the four positioning posts 106 has a limiting post 107 slidably connected inside. Each of the four limiting posts 107 has a return spring 108 fixedly installed on the outer side. The other end of each of the four return springs 108 is fixedly installed on the outer surface of the positioning posts 106. The bottom of each of the four limiting posts 107 is movably connected to the top of the top shell 103. Each of the four limiting posts 107 has a first bolt 109 threadedly connected inside. Each of the four sides of the top of the top shell 103 has a first threaded groove 110. Each of the four first bolts 109 matches the four first threaded grooves 110.

[0034] In this embodiment, the operator first places the heating element 1 inside the bottom shell 101, then pulls the limiting post 107 outward, allowing it to slide outward inside the positioning post 106, and pulls the return spring 108 to extend it. Next, the operator picks up the top shell 103 and places it on top of the heating element 1. Then, the operator presses the top shell 103, allowing it to slide downward inside the positioning post 106, causing the sealing gasket 105 and connecting post 104 to embed into the connecting groove 102. This allows the bottom of the top shell 103 to fit against the top of the bottom shell 101. Then, the operator releases the limiting post 107, causing the return spring 108 to reset. The return spring 108 can then pull the limiting post 107 inward, allowing the bottom of the limiting post 107 to fit against the top shell 101. At the top of 03, pick up the first bolt 109, insert it into the inside of the limiting post 107, and rotate the first bolt 109 so that it can be inserted into the inside of the first threaded groove 110 to complete the assembly of the heating element 1 with the bottom shell 101 and the top shell 103. Through the cooperation of the first bolt 109, the positioning post 106, and the limiting post 107, the overall structure can be easily disassembled when needed. This allows personnel to quickly disassemble the top shell 103 and replace or repair it when the equipment malfunctions or needs maintenance, without having to replace the entire equipment, saving time and costs. At the same time, personnel can easily complete the assembly of the heating element 1 with the bottom shell 101 and the top shell 103, making the fit between the heating element 1 and the shell tighter, while simplifying the assembly steps and reducing the reliance on tools and manual labor.

[0035] Example 2, as Figure 1-5 As shown, both the bottom shell 101 and the top shell 103 have soft pads 201 inside. A power cord 2 is provided on the right side of the heating element 1. The inner surfaces of the two soft pads 201 are movably connected to the outer surface of the power cord 2. Both the bottom shell 101 and the top shell 103 have fasteners 202 on the right side. Both fasteners 202 are located on the outside of the soft pads 201. The inner sides of one fastener 202 are threaded with second bolts 203. The inner sides of the other fastener 202 are provided with second threaded grooves 204. Both second bolts 203 are matched with the second threaded grooves 204. Nuts 205 are threaded on the outer surfaces of both second bolts 203.

[0036] In this embodiment, when the heating element 1 is placed inside the bottom shell 101, the bottom of the power cord 2 will adhere to the inner surface of the bottom side soft pad 201. When the top shell 103 is fitted on top of the heating element 1, the top side soft pad 201 will adhere to the top outer surface of the power cord 2. Then, the operator rotates the second bolt 203 to embed it into the second threaded groove 204, and picks up the nut 205 and fits it on the outer surface of the second bolt 203. Rotating the nut 205 allows it to adhere to the bottom of the bottom fixing member 202. As the nut 205 rotates, it pulls the two fixing members 202 to adhere, thereby squeezing the two soft pads 201 so that they can better adhere to the surface of the power cord 2. Through the structure of the soft pads 201 and the fixing members 202, friction or collision between the power cord 2 and other components can be effectively prevented, thereby reducing wear and damage to the power cord 2, extending the service life of the power cord 2, and enhancing the durability of the equipment.

[0037] Working principle: In use, the operator first places the heating element 1 inside the bottom shell 101, then pulls the limiting post 107 outward, allowing it to slide outward inside the positioning post 106, and pulls the return spring 108 to extend it. Next, the operator picks up the top shell 103 and places it on top of the heating element 1. Pressing the top shell 103 allows it to slide downward inside the positioning post 106, causing the sealing gasket 105 and connecting post 104 to embed into the connecting groove 102. This allows the bottom of the top shell 103 to fit against the top of the bottom shell 101. Then, the operator releases the limiting post 107, causing the return spring 108 to reset. The return spring 108 then pulls the limiting post 107 inward, allowing the bottom of the limiting post 107 to fit against the top shell 101. At the top of shell 103, the first bolt 109 is picked up and inserted into the limiting post 107. The first bolt 109 is then rotated so that it can be inserted into the first threaded groove 110, thereby completing the assembly of the heating element 1 with the bottom shell 101 and the top shell 103. Through the cooperation of the first bolt 109, the positioning post 106, and the limiting post 107, the overall structure can be easily disassembled when needed. This allows personnel to quickly disassemble the top shell 103 and replace or repair it when the equipment malfunctions or needs maintenance, without having to replace the entire equipment, saving time and costs. At the same time, personnel can easily assemble the heating element 1 with the bottom shell 101 and the top shell 103, making the fit between the heating element 1 and the shell tighter. This also simplifies the assembly steps and reduces the reliance on tools and manual labor. In use, when the heating element 1 is placed inside the bottom shell 101, the bottom of the power cord 2 will adhere to the inner surface of the bottom side soft pad 201. When the top shell 103 is fitted on top of the heating element 1, the top side soft pad 201 will adhere to the top outer surface of the power cord 2. Then, the operator rotates the second bolt 203 to embed it into the second threaded groove 204, and picks up the nut 205 and fits it on the outer surface of the second bolt 203. Rotating the nut 205 allows it to adhere to the bottom of the bottom fixing member 202. As the nut 205 rotates, it pulls the two fixing members 202 to adhere, thereby squeezing the two soft pads 201 so that they can better adhere to the surface of the power cord 2. Through the structure of the soft pads 201 and the fixing members 202, friction or collision between the power cord 2 and other components can be effectively prevented, thereby reducing wear and damage to the power cord 2, extending the service life of the power cord 2, and enhancing the durability of the equipment.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A low-power, high-efficiency heat-concentrating PTC heater structure, comprising a heating element (1), wherein a bottom shell (101) is movably fitted onto the bottom of the heating element (1), and a connecting groove (102) is provided on the top of the bottom shell (101), characterized in that, Also includes: The top shell (103) is movably sleeved on the top of the heating element (1), and the bottom of the top shell (103) is movably connected to the top of the bottom shell (101); A connecting post (104) is fixedly installed at the bottom of the top shell (103). The connecting post (104) matches the connecting groove (102). A sealing gasket (105) is provided at the bottom of the connecting post (104). The sealing gasket (105) is movably embedded inside the connecting groove (102). Four positioning posts (106) are fixedly installed on the outer surface of the bottom shell (101), and the top shell (103) is movably connected to the inner side of the multiple positioning posts (106).

2. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 1, characterized in that: Each of the four positioning posts (106) is slidably connected to a limiting post (107), and a return spring (108) is fixedly installed on the outer side of each of the four limiting posts (107).

3. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 2, characterized in that: The other ends of the four reset springs (108) are fixedly installed on the outer surface of the positioning post (106), and the bottoms of the four limiting posts (107) are movably connected to the top of the top shell (103).

4. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 3, characterized in that: The four limiting posts (107) are all threaded with first bolts (109), and the top shell (103) is provided with first threaded grooves (110) around its top. The four first bolts (109) are matched with the four first threaded grooves (110).

5. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 1, characterized in that: The bottom shell (101) and the top shell (103) are both provided with soft pads (201), and a power cord (2) is provided on the right side of the heating element (1).

6. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 5, characterized in that: The inner surfaces of the two pads (201) are movably connected to the outer surface of the power cord (2). The bottom shell (101) and the top shell (103) are both provided with fixing members (202) on the right side, and the two fixing members (202) are both provided on the outer side of the pads (201).

7. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 6, characterized in that: One of the fasteners (202) has a second bolt (203) threaded on both sides of its interior, and the other fastener (202) has a second threaded groove (204) on both sides of its interior.

8. The structure of a low-power, high-efficiency heat-concentrating PTC heater according to claim 7, characterized in that: Both second bolts (203) are matched with the second threaded groove (204), and the outer surfaces of both second bolts (203) are threaded with nuts (205).

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