PTC (Positive Temperature Coefficient) core body assembly and PTC heater
By setting a clamping part on the core holder of the PTC heater and fixing the PTC core with a removable elastic clamp or tube clamp, the problem of the inert replacement of the PTC core in the prior art is solved, and the effect of reducing production and use costs is achieved.
Patent Information
- Application Number
- CN202421246321.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Once the PTC core assembly of the existing PTC heater fails, the entire product cannot be disassembled and replaced, resulting in increased production and use costs.
A PTC core assembly is designed to fix the PTC core to the inner tube by providing a clamping part on the core base and using a removable elastic clamp or tube clamp to make it replaceable.
The replaceability of the PTC core is achieved, the production and use costs are reduced, and the product scrapping caused by core failure is avoided.
Smart Images
Figure CN222563991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heater, in particular to a PTC core component and a PTC heater. Background Art
[0002] The existing pipeline PTC heaters mainly have a single-tube aluminum profile and a stainless steel inner tube integrated molding process. After the finished product is assembled, multiple groups of PTC heating cores are a whole and cannot be disassembled. During the manufacturing process, as long as a group of PTC heating cores of a product has insulation, voltage resistance or other problems, the entire product cannot be reworked and can only be scrapped, which increases the production cost. During use, if a group of PTC heating cores is damaged and needs to be replaced, the product can only be dismantled as a whole and replaced with a new one, which undoubtedly increases the use cost. Utility Model Content
[0003] The utility model aims to provide a PTC core assembly and a PTC heater, and the technical problem to be solved is to realize the replaceable PTC core and reduce the production and use costs.
[0004] To solve the above problems, the utility model adopts the following technical solutions: a PTC core assembly, including a PTC core, wherein at least two PTC cores are provided, and the PTC cores are annular after being assembled, and the PTC core includes a heat-conducting core seat, and a through cavity is provided in the core seat, and a PTC heating component is provided in the through cavity, and the PTC core is fixed outside the PTC core by a detachable tube clamp or clamping parts are respectively provided on the edges of the core seats of two adjacent PTC cores, and a detachable U-shaped elastic clip is provided on the clamping part, and the elastic clip is clamped on the adjacent clamping parts of the two PTC cores.
[0005] Furthermore, the two clamping feet of the elastic clamp are respectively provided with top feet bent toward the inside of the elastic clamp, and a protrusion is provided on one end of the clamping part facing the core seat. When the elastic clamp is clamped on the clamping part, the top feet abut against the protrusion.
[0006] Furthermore, an arc-shaped transition surface is provided between the two clamping feet and the top foot of the elastic clamp.
[0007] Furthermore, the two clamping feet of the elastic clamp shrink toward the center thereof.
[0008] Furthermore, a groove is provided between the clamping portion and the core seat, and two clamping feet of the elastic clamp are respectively inserted into the groove.
[0009] Furthermore, the core seat is provided with at least two mutually unconnected through cavities, and each through cavity is provided with a PTC heating component.
[0010] Furthermore, the pipe clamp is composed of two symmetrically arranged semicircular bodies, the pipe clamp extends along the axial direction of the PTC core body, and the two side edges of the semicircular bodies are respectively provided with connecting edges, the connecting edges are provided with through holes, and the connecting edges are connected and fixed by bolt assemblies.
[0011] Furthermore, the core seat is arc-shaped, and the PTC core is in a circular ring shape after being assembled.
[0012] The utility model also discloses a PTC heater, comprising an inner tube and the PTC core assembly, wherein the PTC core surrounds the inner tube.
[0013] Compared with the prior art, the utility model provides a clamping part on the core seat, and clamps the clamping parts on two adjacent core seats by a detachable elastic clip, or provides a detachable tube clamp outside the PTC core, so as to fix the PTC core on the inner tube. When the PTC core fails, the corresponding PTC core can be replaced by removing the elastic clip, which not only reduces the production cost, but also reduces the subsequent use cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is an external schematic diagram of embodiment 1 of the utility model.
[0015] Figure 2 It is a connection diagram of Example 1 of the utility model.
[0016] Figure 3-4 It is a connection diagram of Example 2 of the utility model. DETAILED DESCRIPTION
[0017] The utility model is further described in detail below with reference to the accompanying drawings and embodiments.
[0018] Example 1
[0019] like Figure 1 and Figure 2 As shown, the utility model discloses a PTC core assembly, including a PTC core 1, wherein the PTC core 1 is provided with at least two PTC cores. When the PTC cores 1 are assembled, the PTC core assembly is annular as a whole. The PTC core 1 includes a heat-conducting core seat 2, and the core seat 2 is an elongated structure as a whole. A through cavity is provided in the core seat 2, and the through cavity extends along the axial direction of the core seat 2. A PTC heating component 3 is provided in the through cavity. The PTC heating component 3 is a prior art and is not specifically limited here. Protruding clamping parts 4 are respectively provided on the edges of both sides of the core seat 2, and the clamping parts 4 extend along the axial direction of the core seat 2. A detachable U-shaped elastic clip 5 is provided on the clamping parts 4, and the elastic clip 5 is clamped on the adjacent clamping parts 4 of the two PTC cores 1 to fix the PTC core assembly on the heated component.
[0020] like Figure 1 and 2 As shown, the elastic clip 5 is also in the shape of a long strip, and two adjacent PTC cores 1 are clamped and fixed by at least two elastic clips 5. The two clamping feet of the elastic clip 5 are respectively provided with top feet 6 bent toward the inside of the elastic clip 5, and a protrusion 7 is provided on one end of the clamping portion 4 facing the core seat 2. When the elastic clip 5 is clamped on the clamping portion 4, the top foot 6 and the protrusion 7 are abutted to achieve limiting, thereby Figure 2 It can be seen from the figure that the top foot 6 is against the lower end of the protrusion 7.
[0021] like Figure 2 As shown, an arcuate transition surface 8 is provided between the two clamping feet of the elastic clamp 5 and the top foot 6, so that the elastic clamp 5 is guided by the end of the clamping portion 4 through the arcuate transition surface 8 to open and clamp on the two clamping portions 4. Furthermore, the two clamping feet of the elastic clamp 5 are contracted toward the center thereof to increase the clamping force of the elastic clamp 5.
[0022] like Figure 2 As shown, a groove 9 is provided between the clamping portion 4 and the core seat 2 , and the two clamping feet of the elastic clamp 5 are respectively inserted into the groove 9 to achieve the two clamping feet of the elastic clamp 5 to avoid.
[0023] In the utility model, at least two mutually unconnected through cavities are arranged on the core seat 2, and a PTC heating component 3 is arranged in each of the through cavities.
[0024] like Figure 2 As shown, the core seat 2 is arc-shaped, and after the PTC core 1 is assembled, the PTC core assembly is in a circular ring shape as a whole, so as to achieve a close fit with the tube body and improve the heating efficiency.
[0025] As a preferred implementation, Figure 2 As shown, three PTC core bodies 1 are provided, and each core body seat 2 is provided with two through cavities. Two convex-shaped parts 21 are respectively provided on the core body seat 2. The number of the convex-shaped parts 21 is equal to that of the through cavities. The through cavities are arranged in the convex-shaped parts 21, and notches are arranged between two adjacent convex-shaped parts 21 to reduce material.
[0026] In the present utility model, the core seat 2 is made of aluminum material, and the elastic clip 5 is made of stainless steel material.
[0027] Example 2
[0028] like Figure 3As shown, the utility model discloses another PTC core assembly, which differs from Example 1 in that the PTC core assembly includes a PTC core 1, wherein at least two PTC cores 1 are provided, and the PTC cores 1 are ring-shaped after being assembled, and the PTC core 1 includes a heat-conducting core seat 2, wherein a through cavity is provided in the core seat 2, and a PTC heating assembly 3 is provided in the through cavity, and the PTC core 1 is fixed outside the PTC core 1 by a detachable tube clamp 11 surrounded by the outside of the PTC core 1.
[0029] like Figure 3 As shown, the tube clamp 11 is composed of two symmetrically arranged semicircular bodies 12. The tube clamp 11 extends along the axial direction of the PTC core 1. The two side edges of the semicircular body 12 are respectively provided with connecting edges 13, and the connecting edges 13 are provided with through holes. The connecting edges 13 are connected and fixed by bolt assemblies.
[0030] As an implementation mode, six PTC cores 1 are provided.
[0031] like Figure 1 and Figure 2 As shown, the utility model also discloses a PTC heater, including an inner tube 10. The PTC core assembly adopts the structure shown in Example 1. The PTC core 1 surrounds the inner tube 10. In this example, three PTC cores 1 are provided. The PTC core 1 is tightly fixed to the outside of the inner tube 10 by an elastic clip 5.
[0032] like Figure 3 and Figure 4 As shown, the utility model also discloses another PTC heater, including an inner tube 10. The PTC core assembly adopts the structure shown in Example 2. After the PTC core 1 surrounds the inner tube 10, the semicircular body 12 is clamped on the opposite sides of the PTC core 1 and fixed by a bolt assembly.
[0033] The utility model has the feature that the PTC core assembly can be removed from the inner tube 10 by disassembling the elastic clip 5 or the tube clip 11, so that a faulty PTC core can be replaced without scrapping or replacing the entire product, which not only reduces production costs but also reduces subsequent use costs.
Claims
1. A PTC core assembly, comprising a PTC core (1), characterized in that: The PTC core (1) is provided with at least two PTC cores, which are annular after being assembled. The PTC core (1) comprises a heat-conducting core seat (2), a through cavity is provided in the core seat (2), a PTC heating component (3) is provided in the through cavity, the PTC core (1) is surrounded by a detachable tube clamp (11) to be fixed outside the PTC core (1), or clamping parts (4) are respectively provided on the edges of the core seats (2) of two adjacent PTC cores (1), and a detachable U-shaped elastic clip (5) is provided on the clamping part (4), and the elastic clip (5) is clamped on the adjacent clamping parts (4) of the two PTC cores (1).
2. The PTC core assembly according to claim 1, characterized in that: The two clamping feet of the elastic clamp (5) are respectively provided with a top foot (6) bent toward the inside of the elastic clamp (5), and a protrusion (7) is provided on one end of the clamping portion (4) facing the core seat (2). When the elastic clamp (5) is clamped on the clamping portion (4), the top foot (6) and the protrusion (7) are abutted.
3. The PTC core assembly according to claim 2, characterized in that: An arc-shaped transition surface (8) is provided between the two clamping feet of the elastic clamp (5) and the top foot (6).
4. The PTC core assembly according to claim 3, characterized in that: The two clamping feet of the elastic clamp (5) are retracted towards the center thereof.
5. The PTC core assembly according to claim 4, characterized in that: A groove (9) is provided between the clamping portion (4) and the core seat (2), and two clamping feet of the elastic clamp (5) are respectively inserted into the groove (9).
6. The PTC core assembly according to claim 5, characterized in that: The core seat (2) is provided with at least two mutually unconnected through cavities, and each through cavity is provided with a PTC heating component (3).
7. The PTC core assembly according to claim 1, characterized in that: The tube clamp (11) is composed of two symmetrically arranged semicircular bodies (12). The tube clamp (11) extends along the axial direction of the PTC core (1). The edges of both sides of the semicircular body (12) are respectively provided with connecting edges (13). Through holes are provided on the connecting edges (13). The connecting edges (13) are connected and fixed by bolt assemblies.
8. The PTC core assembly according to any one of claims 1 to 7, characterized in that: The core seat (2) is arc-shaped, and the PTC core (1) is in a circular ring shape after being assembled.
9. A PTC heater, comprising an inner tube (10), characterized in that: It also comprises a PTC core assembly as claimed in any one of claims 1 to 8, wherein the PTC core (1) surrounds the inner tube (10).