Heat-gathering-preventing copper sleeve type heater

By setting heat dissipation channels and holes on the peripheral surface of the heat conducting parts and increasing the number of heating coils at both ends, the problem of uneven heating is solved, and the uniform temperature distribution and heating effect are improved.

CN223157245UActive Publication Date: 2025-07-25LI DIAN TECH (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202421951427.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-13
Publication Date
2025-07-25
Estimated Expiration
2034-08-13

AI Technical Summary

Technical Problem

In existing heaters, due to the vortex effect and uneven setting of the heating wire, the local temperature of the heat conductor is too high, resulting in uneven heating, affecting product quality and yield.

Method used

The heat dissipation channel and multiple heat dissipation holes are provided on the peripheral surface of the heat conducting member, and the number of heating coils is increased at both ends of the heat conducting member, and the heat dissipation is evenly spread through the heat dissipation channel and the holes to reduce local heat accumulation.

Benefits of technology

The uniform distribution of the internal temperature of the heat conducting parts is achieved, the uniformity of heating and the yield of the product are improved, and the quality problems caused by local overheating are avoided.

✦ Generated by Eureka AI based on patent content.

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Abstract

According to the anti-heat-gathering copper sleeve type heater, a to-be-heated product is placed in the heat dissipation channel, and when the heat dissipation channel is powered on, the heating wire starts to generate heat. As the heating wire is wound on the peripheral surface of the heat conducting piece, heat is firstly transferred to the outer surface of the heat conducting piece. The heat dissipation channel in the heat conduction part can more uniformly diffuse heat into the internal space of the whole heat conduction part, so that the temperature of the heat conduction part is consistent, and when a product in the heat dissipation channel is heated, the product can be more uniformly heated, so that the temperature consistency of the product during heating is improved, and the product quality is improved. And the problem of low yield caused by large local temperature difference of the product is avoided. Due to the arrangement of the heat dissipation channel, the direct contact area between the product and the heat-gathering-preventing copper sleeve type heater is reduced, the gathering effect of local heat is reduced, and the temperature distribution in the heat conduction piece is more uniform.
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Description

Technical Field

[0001] The present application relates to the field of heaters, and particularly to an anti-thermal-accumulation copper sleeve heater. Background Art

[0002] A heater usually consists of a heating wire and a heat conducting member. When installed, the heating wire is wound around the circumferential surface of the heat conducting member so that the heat of the heating wire can be transferred to the heat conducting member. Secondly, since the thermal conductivity of metal is higher than that of other materials, a metal material is usually used as the heat conducting member. The heating wire wound around the circumferential surface of the heat conducting member will generate an eddy current effect on the heat conducting member, further causing the heat conducting member to generate heat and the temperature to rise relatively fast.

[0003] When setting the heating wire, in order to achieve a better heating effect, additional turns are set at the two end portions of the heat conducting member. This setting will cause the heat at the two end portions of the heat conducting member to be greater than the heat at the middle portion of the heat conducting member, resulting in the heat at the end portions of the heat conducting member gathering towards the middle due to the heat transfer effect. The heat from both ends gathering at the middle of the heat conducting member will cause the temperature at the middle of the heat conducting member to be too high.

[0004] When placing the product to be heated into the heater, due to the too high local temperature while the temperature in other areas is too low, the heated product is unevenly heated, resulting in poor consistency of the product after heating. Because of the uneven heating, it affects the flow of glue into the product, leading to a decrease in the yield rate of the product.

[0005] Secondly, since the heating wire is wound around the heat conducting member, the heat at the contact position will be higher than that at the non-contact surface because the heating wire contacts the heat conducting member, resulting in too high local temperature of the heat conducting member or heat gathering in a local area of the heat conducting member, which is not conducive to the temperature balance of the heat conducting member and leads to unstable product quality.

[0006] The eddy current effect of the heating wire on the heat conducting member will also exacerbate the too high temperature in a local area of the heat conducting member, further causing the temperature in the area where the heat conducting member is in contact with the heating wire to be higher than that in the non-contact surface area, further exacerbating the problem of too high local temperature of the heat conducting member and leading to unstable product quality. Utility Model Content

[0007] In view of this, it is necessary to provide an anti-thermal-accumulation copper sleeve heater to solve the above problems.

[0008] An embodiment of the present application provides an anti-thermal-accumulation copper sleeve heater, including:

[0009] A heat conducting member, with a heat dissipation channel formed inside, and the heat dissipation channel penetrates the heat conducting member along the axis of the heat conducting member;

[0010] The heating wire is disposed on the circumferential surface of the heat conducting member and is arranged around the heat conducting member. The number of turns of the heating coil at both ends of the heat conducting member is greater than the number of turns of the heating coil in the middle of the heat conducting member.

[0011] In at least one embodiment of the present application, a first heat dissipation hole is formed in the circumferential surface of the heat conducting member along the axial direction of the heat conducting member. The first heat dissipation hole is communicated with the heat dissipation channel, so that heat enters the heat dissipation channel through the first heat dissipation hole to balance the temperature of each region of the heat conducting member.

[0012] In at least one embodiment of the present application, a second heat dissipation hole and a third heat dissipation hole are further formed in the circumferential surface of the heat conducting member along the axial direction of the heat conducting member;

[0013] Both the second heat dissipation hole and the third heat dissipation hole are communicated with the heat dissipation channel.

[0014] In at least one embodiment of the present application, the first heat dissipation hole, the second heat dissipation hole and the third heat dissipation hole are arranged at equal angles on the circumferential surface of the heat conducting member.

[0015] In at least one embodiment of the present application, the length of the first heat dissipation hole is denoted as a, the length of the second heat dissipation hole is denoted as b, and the length of the third heat dissipation hole is denoted as c, satisfying the relationship: a ≤ b ≤ c.

[0016] In at least one embodiment of the present application, a positioning groove is further formed in the circumferential surface of the heat conducting member. The heating wire is installed in the positioning groove, and the heating wire surrounds the heat conducting member along the opening track of the positioning groove.

[0017] In at least one embodiment of the present application, an installation groove is further formed in the circumferential surface of the heat conducting member. The installation groove is communicated with the positioning groove;

[0018] The anti-thermal-accumulation copper sleeve type heater further includes:

[0019] A welding piece is disposed on the inner wall of the installation groove and extends into the positioning groove to be fixedly connected with the heating wire.

[0020] In at least one embodiment of the present application, both ends of the welding piece are respectively welded to two adjacent coils at the end of the heating wire.

[0021] In at least one embodiment of the present application, the anti-thermal-accumulation copper sleeve type heater further includes:

[0022] A lead wire, one end of which is disposed at one end of the heating wire and the other end of which is connected to an external power supply.

[0023] In at least one embodiment of the present application, the anti-thermal-accumulation copper sleeve type heater further includes:

[0024] A high-temperature resistant connector is respectively arranged at both ends on the lead wire and the heating wire. The heating wire and the lead wire are connected through the high-temperature resistant connector, so that the lead wire and the heating wire are electrically connected.

[0025] A high-temperature resistant insulating sleeve is sleeved on one end of the lead wire close to the high-temperature resistant connector.

[0026] Implementing the anti-thermal accumulation type copper sleeve heater of this embodiment will at least have the following beneficial effects:

[0027] For the anti-thermal accumulation type copper sleeve heater provided above, the product to be heated is placed in the heat dissipation channel. When powered on, the heating wire starts to generate heat. Since the heating wire is wound around the circumferential surface of the heat conducting member, the heat is first transferred to the outer surface of the heat conducting member.

[0028] The heat dissipation channel inside the heat conducting member diffuses the heat more evenly into the entire internal space of the heat conducting member, making the temperature of the heat conducting member consistent. When heating the product in the heat dissipation channel, the product can be heated more evenly, so as to improve the consistency of the temperature during product heating and avoid the problem of low yield caused by large local temperature differences of the product.

[0029] The heat dissipation channel increases the diffusion path of the heat, enabling the heat to be transferred and diffused faster and avoiding local overheating.

[0030] The number of coils of the heating wire at both ends of the heat conducting member is more than that in the middle, so that more heat is generated at both ends. Through the internal heat dissipation channel, this heat will not accumulate towards the middle, but is quickly diffused and balanced through the heat dissipation channel.

[0031] The setting of the heat dissipation channel reduces the direct contact area between the product and the anti-thermal accumulation type copper sleeve heater, reduces the local heat accumulation effect, and makes the internal temperature distribution of the heat conducting member more uniform. Description of the Drawings

[0032] Figure 1 It is a schematic structural diagram of the anti-thermal accumulation type copper sleeve heater in an embodiment;

[0033] Figure 2 It is Figure 1 the exploded view of the anti-thermal accumulation type copper sleeve heater in

[0034] Figure 3 It is Figure 1 another angle schematic structural diagram of the anti-thermal accumulation type copper sleeve heater in

[0035] Figure 4 It is Figure 1 yet another angle schematic structural diagram of the anti-thermal accumulation type copper sleeve heater in

[0036] Figure 5 For Figure 1 the reference diagram of the usage state of the anti-thermal-accumulation copper sleeve heater in

[0037] Description of main component symbols

[0038] 100. Anti-thermal-accumulation copper sleeve heater;

[0039] 110. Heat conducting member; 110a. Heat dissipation channel; 110b. First heat dissipation hole; 110c. Second heat dissipation hole; 110d. Third heat dissipation hole; 110e. Positioning groove; 110f. Installation groove;

[0040] 120. Heating wire;

[0041] 130. Welding piece;

[0042] 140. Lead wire;

[0043] 150. High-temperature connector;

[0044] 160. High-temperature insulating sleeve;

[0045] 170. Product. Specific implementation manners

[0046] Next, the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0047] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "arranged on" another component, it can be directly arranged on the other component or there may be an intermediate component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "rear", and similar expressions used herein are only for the purpose of illustration.

[0048] Next, some embodiments of the present application will be described in detail with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0049] The embodiments of the present application provide an anti-thermal-accumulation copper sleeve heater 100, including:

[0050] A heat conducting member 110, inside which a heat dissipation channel 110a is formed, and the heat dissipation channel 110a penetrates through the heat conducting member 110 along the axis of the heat conducting member 110;

[0051] The heating wire 120 is disposed on the circumferential surface of the heat conducting member 110 and is arranged to surround the heat conducting member 110. The number of turns of the heating wire 120 at both ends of the heat conducting member 110 is greater than the number of turns of the heating wire 120 in the middle of the heat conducting member 110.

[0052] Please refer to Figures 1 - 5 , in this embodiment, when powered on, the heating wire 120 starts to generate heat. Since the heating wire 120 is wound around the circumferential surface of the heat conducting member 110, the heat is first transferred to the outer surface of the heat conducting member 110.

[0053] The heat dissipation channels 110a inside the heat conducting member 110 distribute the heat more evenly through the inside of the heat conducting member 110.

[0054] The heat dissipation channels 110a increase the heat diffusion path, enabling the heat to be transferred and diffused faster, and avoiding local overheating.

[0055] The number of turns of the heating wire 120 at both ends of the heat conducting member 110 is more than that in the middle, resulting in more heat at both ends. Through the internal heat dissipation channels 110a, this heat does not accumulate towards the middle but is quickly diffused and balanced through the heat dissipation channels 110a.

[0056] The setting of the heat dissipation channels 110a reduces the direct contact area between the product and the anti - heat - accumulation type copper sleeve heater 100, reduces the local heat accumulation effect, and makes the temperature distribution inside the heat conducting member 110 more uniform.

[0057] The heat conducting member 110 is of a tubular structure and is made of a metal material, such as copper, iron, aluminum, etc. In this embodiment, it is made of copper material.

[0058] The heating wire 120 is a heating filament.

[0059] In at least one embodiment of the present application, a first heat dissipation hole 110b is formed on the circumferential surface of the heat conducting member 110 along the axial direction of the heat conducting member 110. The first heat dissipation hole 110b communicates with the heat dissipation channels 110a so that heat enters the heat dissipation channels 110a through the first heat dissipation hole 110b to balance the temperature of each region of the heat conducting member 110.

[0060] In this embodiment, when the anti-thermal-accumulation copper sleeve heater 100 is working, first, the product 170 to be heated is placed into the heat dissipation channel 110a, and the heat generated by the heating wire 120 is transferred to the peripheral surface of the heat conducting member 110. Since the first heat dissipation holes 110b are formed in the peripheral surface of the heat conducting member 110 along the axial direction, the heat can uniformly enter the heat dissipation channel 110a through the first heat dissipation holes 110b, so as to uniformly heat the product 170 in the heat dissipation channel 110a. Then the glue in the subsequent process can flow into the part to form a finished product, avoiding the problem that the product is affected during the processing due to inconsistent heating temperature and resulting in a low product yield.

[0061] The heat dissipation channel 110a runs through the inside of the heat conducting member 110, providing an efficient heat transfer path, enabling the heat inside the heat conducting member 110 to be quickly and evenly distributed.

[0062] Since the heat dissipation channel 110a is communicated with the first heat dissipation holes 110b, the heat enters the heat dissipation channel 110a from the peripheral surface through the first heat dissipation holes 110b, and then flows in the heat dissipation channel 110a, and finally is evenly distributed in each area of the heat conducting member 110, enabling the anti-thermal-accumulation copper sleeve heater 100 to uniformly heat the product 170 in the heat dissipation channel 110a.

[0063] The existence of the heat dissipation channel 110a makes the heat no longer concentrated in a certain local area of the heat conducting member 110, but evenly dispersed inside the entire heat conducting member 110.

[0064] Through the first heat dissipation holes 110b and the heat dissipation channel 110a, the heat can quickly be transferred from the peripheral surface of the heat conducting member 110 to the internal channel and then evenly dispersed. It effectively avoids the problem of heat accumulation in the local area of the heat conducting member 110, ensures the uniform temperature distribution of the heat conducting member 110, makes the heat distribution in the heat dissipation channel 110a more uniform, and can more uniformly heat the product 170 in the heat dissipation channel 110a.

[0065] The balanced temperature distribution improves the stability and reliability of the anti-thermal-accumulation copper sleeve heater 100 and avoids product quality problems caused by too high local temperature.

[0066] It should be noted that the first heat dissipation holes 110b are through holes, and the first heat dissipation holes 110b are strip-shaped through holes, and the length of the first heat dissipation holes 110b is set along the axial direction of the heat conducting member 110.

[0067] In at least one embodiment of the present application, second heat dissipation holes 110c and third heat dissipation holes 110d are further formed in the peripheral surface of the heat conducting member 110 along the axial direction of the heat conducting member 110;

[0068] The second heat dissipation hole 110c and the third heat dissipation hole 110d are both communicated with the heat dissipation channel 110a.

[0069] In at least one embodiment of the present application, the first heat dissipation hole 110b, the second heat dissipation hole 110c, and the third heat dissipation hole 110d are arranged at equal angles on the circumferential surface of the heat conducting member 110.

[0070] Please refer to Figures 1 - 4 , in this embodiment, the heat generated by the heating wire 120 is transferred to the inside through the circumferential surface of the heat conducting member 110. Since the first heat dissipation hole 110b, the second heat dissipation hole 110c, and the third heat dissipation hole 110d are opened along the axial direction, the heat can enter the heat dissipation channel 110a through these heat dissipation holes.

[0071] The communication of the first heat dissipation hole 110b, the second heat dissipation hole 110c, and the third heat dissipation hole 110d with the heat dissipation channel 110a enables the heat to be quickly transferred from the circumferential surface to the heat dissipation channel 110a inside the heat conducting member 110, so that the heat can be more evenly distributed inside the heat conducting member 110, ensuring the uniform distribution of heat on the circumferential surface and avoiding the excessive concentration of heat in a certain local area.

[0072] The first heat dissipation hole 110b, the second heat dissipation hole 110c, and the third heat dissipation hole 110d are arranged at equal angles, so that the heat can be quickly transferred to the heat dissipation channel 110a from multiple directions and positions, improving the heat dissipation efficiency and reducing the residence time of heat in a local area of the heat conducting member 110.

[0073] The second heat dissipation hole 110c and the third heat dissipation hole 110d are both through holes, and the second heat dissipation hole 110c and the third heat dissipation hole 110d are both rectangular holes, and the length direction thereof is arranged along the axis of the heat conducting member 110. In other embodiments, they can be holes of other shapes.

[0074] In another embodiment, the first heat dissipation hole 110b can be two.

[0075] In at least one embodiment of the present application, the length of the first heat dissipation hole 110b is denoted as a, the length of the second heat dissipation hole 110c is denoted as b, and the length of the third heat dissipation hole 110d is denoted as c, satisfying the relational expression: a ≤ b ≤ c.

[0076] Please refer to Figures 1 - 4 , in this embodiment, the length of the first heat dissipation hole 110b is denoted as a, the length of the second heat dissipation hole 110c is denoted as b, and the length of the third heat dissipation hole 110d is denoted as c, satisfying the relational expression: a ≤ b ≤ c.

[0077] Through the design of heat dissipation holes with different lengths, heat can be conducted in an increasing manner, further improving the temperature balance effect inside the heat conducting member 110. Satisfying the relationship of a ≤ b ≤ c ensures the gradualness and uniformity of heat conduction.

[0078] This enables the heat to gradually spread to a larger area, effectively avoiding the risk of local overheating of the heat conducting member 110. The heat dissipation holes with different lengths provide multi-level heat conduction paths, making the heat distribution more uniform.

[0079] The design of increasing the length of the heat dissipation holes enables heat to be quickly transferred from multiple directions and positions to the heat dissipation channel 110a, improving the heat dissipation efficiency. Heat can quickly spread along paths of different lengths, reducing the residence time of heat inside the heat conducting member 110.

[0080] In at least one embodiment of the present application, a positioning groove 110e is further formed on the circumferential surface of the heat conducting member 110, the heating wire 120 is installed in the positioning groove 110e, and the heating wire 120 surrounds the heat conducting member 110 along the opening trajectory of the positioning groove 110e.

[0081] Please refer to Figures 1 - 4 , in this embodiment, the heating wire 120 is installed (fitted) in the positioning groove 110e, in close contact with the surface of the heat conducting member 110, improving the heat conduction efficiency. In this way, the heat generated by the heating wire 120 can be transferred to the heat conducting member 110 faster, improving the heating efficiency.

[0082] The positioning groove 110e fixes the position of the heating wire 120, preventing its displacement or poor contact caused by thermal expansion and contraction or other external forces during use, thereby improving the stability and reliability of the heater.

[0083] The heating wire 120 is evenly distributed on the circumferential surface of the heat conducting member 110 according to the trajectory of the positioning groove 110e, ensuring uniform heat distribution on the surface of the heat conducting member 110, avoiding local overheating problems, and improving the uniformity and overall quality of the heating effect.

[0084] By ensuring the fixation of the heating wire 120 and the uniform distribution of heat, damage caused by local overheating or displacement of the heating wire 120 is reduced.

[0085] The positioning groove 110e is a groove formed on the circumferential surface of the heat conducting member 110 for placing the heating wire 120.

[0086] In at least one embodiment of the present application, an installation groove 110f is further formed on the circumferential surface of the heat conducting member 110, and the installation groove 110f is communicated with the positioning groove 110e;

[0087] The anti-accumulating heat type copper sleeve heater 100 further includes:

[0088] The welding piece 130 is arranged on the inner wall of the installation groove 110f and extends into the positioning groove 110e to be fixedly connected with the heating wire 120.

[0089] In at least one embodiment of the present application, both ends of the welding piece 130 are respectively welded to two adjacent coils at the end of the heating wire 120.

[0090] Please refer to Figures 1 - 4 , in this embodiment, the heating wire 120 is wound around the heat conducting member 110 along the trajectory of the positioning groove 110e, and the positioning groove 110e ensures the position and arrangement mode of the heating wire 120.

[0091] The welding piece 130 is arranged on the inner wall of the installation groove 110f, extends into the positioning groove 110e, and is welded to the end coil of the heating wire 120.

[0092] The welding piece 130 fixes two adjacent coils of the heating wire 120 by welding, ensuring a firm connection at the end of the heating wire 120.

[0093] Avoid the heating wire 120 from shifting or loosening due to thermal expansion and contraction or other external forces during the heating process.

[0094] The arrangement of the installation groove 110f, the positioning groove 110e and the welding piece 130 ensures the stable installation of the heating wire 120 on the heat conducting member 110. Through the fixation of the welding piece 130, the end coils of the heating wire 120 are firmly connected, avoiding the problems of displacement and loosening.

[0095] The stable installation and firm connection of the heating wire 120 improve the heat conduction efficiency. The heating wire 120 is in close contact with the heat conducting member 110, ensuring that heat is quickly transferred to the heat conducting member 110 and enhancing the heating effect.

[0096] The welding piece 130 is made of weldable metal material.

[0097] In at least one embodiment of the present application, the anti-polythermal copper sleeve heater 100 further includes:

[0098] A lead wire 140, one end of which is arranged at one end of the heating wire 120 and the other end is connected to an external power supply.

[0099] In at least one embodiment of the present application, the anti-polythermal copper sleeve heater 100 further includes:

[0100] A high-temperature resistant connector 150, both ends of which are respectively arranged on the lead wire 140 and the heating wire 120. The heating wire 120 and the lead wire 140 are connected through the high-temperature resistant connector 150 to electrically connect the lead wire 140 and the heating wire 120;

[0101] The high-temperature resistant insulating sleeve 160 is sleeved on one end of the lead wire 140 close to the high-temperature resistant connector 150.

[0102] Please refer to Figures 1 - 4 , in this embodiment, the high-temperature resistant connector 150 is a connecting component for connecting the lead wire 140 and the heating wire 120, and is connected to the lead wire 140 and the heating wire 120 at both ends respectively, and electrical connection is achieved through the high-temperature resistant connector 150.

[0103] The high-temperature resistant connector 150 ensures the stability and safety of the connection in a high-temperature environment, and avoids loosening or disconnection of the connection caused by high temperature.

[0104] The high-temperature resistant insulating sleeve 160 provides additional insulation protection, prevents electrical leakage and short circuit in a high-temperature environment, and improves the overall electrical safety.

[0105] The high-temperature resistant insulating sleeve 160 is sleeved on one end of the lead wire 140 close to the high-temperature resistant connector 150. The high-temperature resistant insulating sleeve 160 provides additional insulation protection, prevents electrical leakage and short circuit in a high-temperature environment, and improves the overall electrical safety.

[0106] The high-temperature resistant insulating sleeve 160 covers the lead wire 140, especially the end close to the connector, and provides additional insulation protection. It can prevent electrical leakage or short circuit caused by high temperature and improve the use safety of the heater.

[0107] The high-temperature resistant insulating sleeve 160 is a hollow flexible sleeve and is made of insulating material.

[0108] The above are only the embodiments of the present application. It should be noted here that for those of ordinary skill in the art, without departing from the creative concept of the present application, improvements can still be made, but these all belong to the protection scope of the present application.

Claims

1. A heat-accumulation prevention type copper sleeve heater, characterized in that, Comprising: A heat conducting member with a heat dissipation channel formed inside, and the heat dissipation channel penetrates the heat conducting member along the axis of the heat conducting member; A heating wire disposed on the peripheral surface of the heat conducting member and wound around the heat conducting member, and the number of turns of the heating coil at both ends of the heat conducting member is greater than the number of turns of the heating coil in the middle of the heat conducting member.

2. The anti-thermal-accumulation type copper sleeve heater according to claim 1, wherein A first heat dissipation hole is formed in the peripheral surface of the heat conducting member along the axial direction of the heat conducting member, and the first heat dissipation hole is communicated with the heat dissipation channel, so that heat enters the heat dissipation channel through the first heat dissipation hole to balance the temperature of each region of the heat conducting member.

3. The anti-thermal-accumulation type copper sleeve heater according to claim 2, wherein A second heat dissipation hole and a third heat dissipation hole are further formed in the peripheral surface of the heat conducting member along the axial direction of the heat conducting member; Both the second heat dissipation hole and the third heat dissipation hole are communicated with the heat dissipation channel.

4. The anti-thermal-accumulation type copper sleeve heater according to claim 3, characterized in that, The first heat dissipation hole, the second heat dissipation hole and the third heat dissipation hole are arranged on the peripheral surface of the heat conducting member at equal angles.

5. The anti-thermal-accumulation type copper sleeve heater according to claim 4, wherein The length of the first heat dissipation hole is denoted as a, the length of the second heat dissipation hole is denoted as b, and the length of the third heat dissipation hole is denoted as c, satisfying the relationship: a ≤ b ≤ c.

6. The anti-thermal-accumulation type copper sleeve heater according to claim 1, wherein A positioning groove is further formed in the peripheral surface of the heat conducting member, and the heating wire is installed in the positioning groove, and the heating wire winds around the heat conducting member along the opening track of the positioning groove.

7. The anti-thermal-accumulation type copper sleeve heater according to claim 6, wherein, An installation groove is further formed in the peripheral surface of the heat conducting member, and the installation groove is communicated with the positioning groove; The anti-accumulating heat type copper sleeve heater further comprises: A welding piece disposed on the inner wall of the installation groove and extending into the positioning groove to be fixedly connected with the heating wire.

8. The anti-thermal-accumulation type copper sleeve heater according to claim 7, wherein, Both ends of the welding piece are welded to two adjacent coils at the end of the heating wire.

9. The anti-thermal-accumulation type copper sleeve heater according to claim 1, wherein The anti-accumulating heat type copper sleeve heater further comprises: A lead wire, one end of which is disposed at one end of the heating wire and the other end is connected to an external power supply.

10. The anti-accumulative heat type copper sleeve heater according to claim 9, characterized in that, The anti-accumulating heat type copper sleeve heater further comprises: A high-temperature resistant connector, both ends of which are respectively disposed on the lead wire and the heating wire, and the heating wire and the lead wire are connected through the high-temperature resistant connector to electrically connect the lead wire and the heating wire; A high-temperature resistant insulating sleeve is sleeved on one end of the lead wire close to the high-temperature resistant connector.