Uniform-heating integrated quartz heating tube

Abstract

The utility model discloses an integrated quartz heating tube capable of uniformly heating. The integrated quartz heating tube comprises a heating wire, a quartz tube, a conductive terminal, a ceramic end cover and a protective cover, the heating wire is arranged in the quartz tube, the ceramic end cover is arranged at the end part of the quartz tube, and the conductive terminal is connected with the heating wire; the heating wire is of a spiral structure and is provided with a first wire winding section and a second wire winding section, the spiral distance of the first wire winding section is larger than that of the second wire winding section, and the protective cover covers the quartz tube in a semi-surrounding mode. The spiral spacing of the first wire winding section on the heating wire is larger than the spiral spacing of the second wire winding section, so that the heating pipe can generate different heat in different areas by adjusting the spiral spacing of the heating wire, and the effect of balancing heat distribution is achieved; local temperature difference caused by the fact that heat at the two ends of the heating wire is absorbed by metal parts close to equipment is avoided; the quartz tube is covered with the protective cover, so that the assembling process can be simplified, and the scalding risk caused by mistaken touch of personnel can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of heating tubes, in particular to an integrated quartz heating tube with uniform heating. Background Art

[0002] Quartz heating tube is a common electric heating element, widely used in industrial and household heating equipment. Its main structure includes a quartz glass tube and an internal heating wire. Due to its high operating temperature and good thermal efficiency, quartz heating tube has applications in many fields, such as baking equipment, electric heaters and other high-temperature heating fields.

[0003] In the prior art, the heating wire inside a traditional quartz heating tube is generally a spiral structure, and the spiral pitch of the heating wire is often fixed, resulting in the same amount of heat generated by each part of the heating wire. However, in actual applications, the two ends of the quartz heating tube usually absorb more heat due to being close to the metal parts of the equipment, resulting in a lower temperature in the end area, making the heat radiated outward from both ends of the heating tube insufficient, while the heating intensity in the middle area of ​​the heating wire is relatively too high, resulting in uneven heat distribution in the heating tube, affecting the heating effect; in addition, the tube body of a traditional quartz heating tube is often exposed to the outside, and users are prone to accidentally touch the high-temperature surface of the heating tube when using it, causing burns, which poses certain safety hazards.

[0004] Therefore, the existing technology has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an integrated quartz heating tube which has uniform heat radiation, good heating effect, high safety and uniform heating.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: an integrated quartz heating tube with uniform heating, comprising a heating wire, a quartz tube, a conductive terminal, a ceramic end cap and a protective cover;

[0007] The heating wire is arranged in the quartz tube, the ceramic end cap is arranged at the end of the quartz tube, the conductive terminal is arranged in the ceramic end cap, and the conductive terminal is connected to the heating wire;

[0008] The heating wire has a spiral structure and comprises a first winding segment and a second winding segment, wherein the second winding segment is located on both sides of the first winding segment, and the spiral pitch of the first winding segment is greater than the spiral pitch of the second winding segment;

[0009] The protective cover is semi-enclosed and covers the quartz tube, and the side end of the protective cover is connected to the ceramic end cover.

[0010] By adopting the above technical solution, in the integrated quartz heating tube with uniform heating, the bottom surface of the protective cover has an arc-shaped structure.

[0011] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the bottom surface of the protective cover has a first heat dissipation area and a second heat dissipation area;

[0012] The first heat dissipation zone is located in the lower area of ​​the first wire winding segment, and the second heat dissipation zone is located in the lower area of ​​the second wire winding segment;

[0013] A plurality of heat dissipation holes for radiating heat are provided on the first heat dissipation area and the second heat dissipation area. The density of the heat dissipation holes on the first heat dissipation area is greater than that on the second heat dissipation area.

[0014] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the side wall of the protective cover is provided with a plurality of hollow slots along its length direction.

[0015] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, a positioning block is provided at the side end of the protective cover;

[0016] The ceramic end cover is provided with a plug-in hole for the positioning block to pass through, and the ceramic end cover at the side end of the plug-in hole is provided with a positioning groove, and the positioning groove is used to be engaged with the positioning block in a bent state.

[0017] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the length of the first wire winding section is greater than the length of the second wire winding section.

[0018] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the length of the first winding section is 0.5-0.75 of the total length of the heating wire, and the length of one section of the second winding section is 0.1-0.25 of the total length of the heating wire.

[0019] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the protective cover is made of aluminum alloy.

[0020] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the ceramic end cover is provided with a mounting hole connected to the quartz tube sleeve, and a sealing tape is bonded between the inner wall of the mounting hole and the outer wall of the quartz tube.

[0021] By adopting the above-mentioned technical solutions, in the integrated quartz heating tube with uniform heating, the surface of the heating wire is coated with a graphene coating.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The heating wire of the present invention comprises a first winding wire section and a second winding wire section, and the spiral pitch of the first winding wire section is greater than the spiral pitch of the second winding wire section. With such a configuration, the spiral pitch of the heating wire can be adjusted to make the heating tube generate different amounts of heat in different areas, thereby achieving an effect of balanced heat distribution, avoiding heat at both ends of the heating wire being absorbed by metal parts close to the equipment to cause local temperature differences, and improving the heating uniformity of the heating tube. Especially in the field of baking equipment, it can prevent food from being heated unevenly and affecting the baking coloring effect; the protective cover is semi-enclosed and covered on the quartz tube to prevent the heating tube from being accidentally touched by people during use, thereby reducing the risk of burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification so as to facilitate understanding and reading by those familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed in the present invention.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic structural diagram of the utility model from another perspective;

[0028] Figure 3 This is a schematic diagram of the explosion structure of the protective cover of the utility model;

[0029] Figure 4 This is a schematic diagram of the internal structure of the quartz tube of the present utility model;

[0030] Figure 5 This is a schematic diagram of the heating wire assembly structure of the present utility model;

[0031] Figure 6 This is a schematic diagram of the ceramic end cover structure of the present utility model. DETAILED DESCRIPTION

[0032] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component.

[0034] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] like Figures 1 to 6 As shown, the embodiment of the present invention provides an integrated quartz heating tube with uniform heating, including a heating wire 1, a quartz tube 2, a conductive terminal 3, a ceramic end cap 4 and a protective cover 5;

[0036] The heating wire 1 is arranged in the quartz tube 2, the ceramic end cap 4 is arranged at the end of the quartz tube 2, and the conductive terminal 3 is arranged in the ceramic end cap 4, and the conductive terminal 3 is connected to the heating wire 1; the heating wire 1 can convert electrical energy into thermal energy after being energized and dissipate it outward, thereby realizing the heating function; the quartz tube 2 has good high temperature resistance and insulation performance, can withstand the high temperature generated by the heating wire 1, and at the same time protect the heating wire 1 from the influence of the external environment; the ceramic end cap 4 is resistant to high temperature and has insulation performance, which can prevent the conductive terminal 3 from contacting the external environment and causing electrical failure, and also plays a role in fixing internal components; one end of the conductive terminal 3 is connected to the external power supply, and the other end is connected to the heating wire 1, thereby providing electrical energy for the heating wire 1.

[0037] like Figure 4As shown, the heating wire 1 has a spiral structure, and the heating wire 1 has a first wire winding segment 11 and a second wire winding segment 12. The second wire winding segment 12 is located on both sides of the first wire winding segment 11, and the spiral pitch of the first wire winding segment 11 is greater than the spiral pitch of the second wire winding segment 12; the spiral pitch of the first wire winding segment 11 is larger, that is, the density of the heating wire 1 in this area is lower, and the heat generated is relatively less; the spiral pitch of the second wire winding segment 12 is smaller, the density of the heating wire 1 is higher, and the heat generated is more. By adjusting the spiral pitch of the heating wire 1, the heating tube can generate different amounts of heat in different areas, thereby achieving the effect of balanced heat distribution, avoiding the heat at both ends of the heating wire 1 being absorbed by the metal parts close to the equipment to cause local temperature differences, thereby improving the heating uniformity of the heating tube, especially in the field of baking equipment, preventing food from being heated unevenly and affecting the baking and coloring effect.

[0038] like Figure 1 As shown, the protective cover 5 is semi-enclosed and covers the quartz tube 2, and the side end of the protective cover 5 is connected to the ceramic end cover 4. The setting of the protective cover 5 can prevent the heating tube from being accidentally touched by people during use, reducing the risk of burns.

[0039] like Figure 3 As shown, further, the bottom surface of the protective cover 5 is an arc-shaped structure, which can expand the coverage of heat radiation and radiate heat more evenly to the entire heating area, thereby improving the heating effect of the heating tube and preventing local overheating or uneven heating.

[0040] like Figure 2 As shown, further, the bottom surface of the protective cover 5 has a first heat dissipation area 51 and a second heat dissipation area 52. The first heat dissipation area 51 is located in the lower area of ​​the first wire winding segment 11, and the second heat dissipation area 52 is located in the lower area of ​​the second wire winding segment 12. The first heat dissipation area 51 and the second heat dissipation area 52 are provided with a plurality of heat dissipation holes 500 for radiating heat. The density of the heat dissipation holes 500 on the first heat dissipation area 51 is greater than the density of the heat dissipation holes 500 on the second heat dissipation area 52. The first wire winding segment 11 of the heating wire 1 has a larger spiral pitch and generates relatively less heat, while the second wire winding segment 12 has a smaller spiral pitch and generates more heat. Based on this characteristic, the first heat dissipation area 51 is set below the first wire winding segment 11, and the second heat dissipation area 52 is set below the second wire winding segment 12. Such a setting can keep the heat dissipation rate of the heating wire 1 in different areas consistent, effectively improving the overall heating uniformity of the heating tube.

[0041] like Figure 3As shown, further, the side wall of the protective cover 5 is provided with a plurality of hollow slots 50 along its length direction. Such a setting can not only reduce the weight of the protective cover 5, but also improve the air convection effect of the quartz tube 2, accelerate the heat dissipation efficiency, thereby maintaining the surface temperature of the quartz heating tube stable and extending the service life of the heating tube.

[0042] like Figure 3 As shown, further, a positioning block 51 is provided at the side end of the protective cover 5, and a plug-in hole 401 is provided on the ceramic end cover 4 for the positioning block 51 to pass through, and a positioning groove 402 is provided on the ceramic end cover 4 at the side end of the plug-in hole 401, and the positioning groove 402 is used to engage with the positioning block 51 in a bent state; when the protective cover 5 needs to be installed, the positioning block 51 can be passed through the plug-in hole 401 on the ceramic end cover 4, and then the positioning block 51 can be bent into the positioning groove 402, thereby realizing the installation and engagement of the protective cover 5 to prevent the protective cover 5 from loosening.

[0043] like Figure 4 As shown, further, the length of the first wire winding segment 11 is greater than the length of the second wire winding segment 12. The central area of ​​the heating tube is not affected by the heat absorption of the external metal parts as much as the ends. By increasing the length of the first wire winding segment 11, a more uniform heating effect can be achieved in the central area. The second wire winding segment 12 is shorter in length but has a higher density, which can compensate for the lower temperature at the two ends of the heating tube, thereby making the heat distribution of the heating tube more uniform during heating and avoiding local overheating.

[0044] Furthermore, the length of the first wire winding segment 11 is 0.5-0.75 of the total length of the heating wire 1, and the length of one section of the second wire winding segment 12 is 0.1-0.25 of the total length of the heating wire 1. In this embodiment, the length of the heating wire 1 is 320 mm, the length of the first wire winding segment 11 is 240 mm, and the length of the second wire winding segment 12 is 40 mm. That is, the length of the first wire winding segment 11 is 0.75 of the total length of the heating wire 1, and the length of one section of the second wire winding segment 12 is 0.125 of the total length of the heating wire 1.

[0045] Furthermore, the protective cover 5 is made of aluminum alloy. Aluminum alloy has good thermal conductivity, which can conduct the heat generated by the heating tube away more quickly, avoid heat accumulation, and thus improve the heat dissipation efficiency of the heating tube.

[0046] like Figure 4 and Figure 6As shown, further, the ceramic end cover 4 is provided with a mounting hole 40 which is sleeved and connected to the quartz tube 2, and a sealing tape is bonded between the inner wall of the mounting hole 40 and the outer wall of the quartz tube 2. Such a setting can effectively fill the gap between the inner wall of the mounting hole 40 and the outer wall of the quartz tube 2 to form a good seal.

[0047] Furthermore, the surface of the heating wire 1 is coated with a graphene coating. This configuration can increase the heat generated by the heating wire 1 and reduce the loss of heat energy in the heating wire 1, thereby improving the heating efficiency.

[0048] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated quartz heating tube with uniform heating, characterized in that: Including heating wire, quartz tube, conductive terminal, ceramic end cap and protective cover; The heating wire is arranged in the quartz tube, the ceramic end cap is arranged at the end of the quartz tube, the conductive terminal is arranged in the ceramic end cap, and the conductive terminal is connected to the heating wire; The heating wire has a spiral structure and comprises a first winding segment and a second winding segment, wherein the second winding segment is located on both sides of the first winding segment, and the spiral pitch of the first winding segment is greater than the spiral pitch of the second winding segment; The protective cover is semi-enclosed and covers the quartz tube, and the side end of the protective cover is connected to the ceramic end cover.

2. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: The bottom surface of the protective cover is in an arc-shaped structure.

3. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: The bottom surface of the protective cover has a first heat dissipation area and a second heat dissipation area; The first heat dissipation zone is located in the lower area of ​​the first wire winding segment, and the second heat dissipation zone is located in the lower area of ​​the second wire winding segment; A plurality of heat dissipation holes for radiating heat are provided on the first heat dissipation area and the second heat dissipation area. The density of the heat dissipation holes on the first heat dissipation area is greater than that on the second heat dissipation area.

4. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: The side wall of the protective cover is provided with a plurality of hollow slots along its length direction.

5. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: A positioning block is provided at the side end of the protective cover; The ceramic end cover is provided with a plug-in hole for the positioning block to pass through, and the ceramic end cover at the side end of the plug-in hole is provided with a positioning groove, and the positioning groove is used to be engaged with the positioning block in a bent state.

6. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: The length of the first wire winding segment is greater than the length of the second wire winding segment.

7. The integrated quartz heating tube with uniform heating according to claim 6, characterized in that: The length of the first wire winding segment is 0.5-0.75 of the total length of the heating wire, and the length of one section of the second wire winding segment is 0.1-0.25 of the total length of the heating wire.

8. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: The protective cover is made of aluminum alloy.

9. The integrated quartz heating tube with uniform heating according to claim 1, characterized in that: The ceramic end cover is provided with a mounting hole connected to the quartz tube sleeve, and a sealing tape is bonded between the inner wall of the mounting hole and the outer wall of the quartz tube.

10. The integrated quartz heating tube with uniform heating according to any one of claims 1 to 9, characterized in that: The surface of the heating wire is coated with a graphene coating.

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