Heating tube and heating device

Abstract

The utility model discloses a heating tube, comprising a quartz tube for passing gas and heating the gas, wherein a gas-guiding rotating shaft is coaxially fixedly arranged in the quartz tube to make the gas rotate and collide with the inner surface of the quartz tube. The quartz tube is a quartz heating tube; the gas-guiding rotating shaft is arranged in the quartz tube, so that when the gas passes through the gas-guiding rotating shaft, a rotating airflow is formed, and the rotating airflow collides with the inner wall of the quartz tube to increase the thermal conductivity, and an inner layer air duct of the heating tube is formed between the gas-guiding rotating shaft and the quartz tube, so that the heat radiated by the quartz heating tube to the inner wall is better transferred to the gas, thereby taking away more heat to improve the heat exchange effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange equipment, and in particular relates to a heating pipe and heating equipment. Background Art

[0002] In special production equipment, it is necessary to heat the air and then blow dry the processed parts. Wind heat heating is similar to a fan, but electric heating is performed through various materials in the wind channel. The most common method is electric heating wire heating. Currently, there are no restrictions on the materials used in common hot air blowers. Most of them use various materials such as metals and plastics. Such hot air blowers cannot meet the requirements of special heating equipment that does not contact metal ion components. The above requirements can be met by using quartz tubes as heating elements, but in the prior art, heat exchange is only performed by directly passing gas into the quartz tube. Since the contact time and contact area of ​​the gas during the passage of the gas and the quartz tube for heat exchange are limited, the gas can only take away a small amount of heat when passing through the inner wall of the quartz tube, and its heat exchange effect needs to be further improved. Therefore, it is necessary to develop a heating tube and heating equipment. Utility Model Content

[0003] The utility model aims to provide a heating tube and a heating device to solve the above-mentioned technical problems. The quartz tube is a quartz heating tube. An air guide rotating shaft is arranged inside the quartz tube so that when the gas passes through the air guide rotating shaft, a rotating airflow is formed. The rotating airflow collides with the inner wall of the quartz tube to increase the thermal conductivity. An inner air duct of the heating tube is formed between the air guide rotating shaft and the quartz tube to better conduct the heat radiated by the quartz heating tube to the inner wall to the gas, thereby taking away more heat to improve the heat exchange effect.

[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0005] A heating tube includes a quartz tube through which gas is introduced and heated, wherein a gas-guiding rotating shaft is coaxially fixedly arranged inside the quartz tube to make the gas rotate and collide with the inner surface of the quartz tube. The quartz tube is a quartz heating tube; the gas-guiding rotating shaft is arranged inside the quartz tube, so that when the gas passes through the gas-guiding rotating shaft, a rotating airflow is formed, and the rotating airflow collides with the inner wall of the quartz tube to increase the thermal conductivity, and an inner layer air duct of the heating tube is formed between the gas-guiding rotating shaft and the quartz tube, so that the heat radiated from the inner wall of the quartz heating tube is better transferred to the gas, thereby taking away more heat to improve the heat exchange effect. The implementation method is simple and easy to implement, the overall device occupies a small volume, can be installed according to needs, and is applicable to many scenarios.

[0006] Preferably, the gas-guiding rotating shaft comprises a fixing frame arranged on both sides of the quartz tube, a shaft body fixedly connected to the fixing frame and coaxially arranged with the quartz tube, and a spiral portion arranged on the outer surface of the shaft body. The shaft body is arranged in the quartz tube, wherein the quartz tube and the fixing frame are fixedly connected. By setting the fixing frame, the shaft body can be coaxially arranged with the quartz tube, wherein the setting of the spiral portion enables the introduced gas to form a spiral state and collide with the inner wall of the quartz tube, so as to better conduct the heat radiated by the quartz heating tube to the inner wall to the gas, thereby taking away more heat to improve the heat exchange effect.

[0007] Preferably, a ventilation cavity is formed between the shaft, the spiral portion and the inner surface of the quartz tube, and the ventilation cavity is spiral. The ventilation cavity is arranged between the gas-guiding rotating shaft and the quartz tube. The introduced gas forms a spiral state and collides with the inner wall of the quartz tube, so that the heat radiated by the quartz heating tube to the inner wall is better transferred to the gas, thereby taking away more heat to improve the heat exchange effect.

[0008] Preferably, the pitch of the spiral portion is A, the inner diameter of the quartz tube is B, and the ratio between the pitch A of the spiral portion and the inner diameter B of the quartz tube is 1:1 to 1:2. The contact time and contact area of ​​the gas flow are determined according to the pitch of the spiral portion and the diameter of the quartz tube to adjust the heat exchange effect.

[0009] Preferably, the diameter of the shaft body is C, the inner diameter of the quartz tube is B, wherein the ratio between the diameter C of the shaft body and the inner diameter B of the quartz tube is 1:2 to 1:3. The size of the ventilation cavity is adjusted according to the diameter of the shaft body and the inner diameter of the quartz tube, thereby determining the flow area of ​​the gas to adjust to the desired heat exchange effect.

[0010] Preferably, the cross-section of the quartz tube along its radial direction is one of circular, square and elliptical. The shape of the quartz tube can be changed according to the needs of gas heat exchange.

[0011] Preferably, the quartz tube includes a tube body and openings arranged on both sides of the tube body, wherein the edges of the openings are in conflict with the inner surface of the fixing frame. The openings are connected to the ventilation cavity. Fixing frames are arranged on both sides, and the fixing frames are connected to the shaft body so that the shaft body can be erected inside the quartz tube. This connection method is simple, is conducive to modular connection assembly, and reduces the difficulty of preparation.

[0012] Preferably, the fixing frame includes a fitting portion that abuts against the edge of the opening, a fixing portion connected to the shaft body, and a spacer connecting the fitting portion and the fixing portion. A vent is provided between the spacers, and the vent is communicated with the opening; the cross-sectional shape of the fitting portion along its radial direction is the same as the cross-sectional shape of the tube body along its radial direction. By providing the fitting portion, the fixing portion and the spacer, when the fixing portion is connected to the shaft body, the fitting portion abuts against the edge of the opening, so that the shaft body is coaxially mounted inside the quartz tube, the connection and fixing method is simple, the assembly is convenient, and the overall volume of the device is small. A plurality of the vents are provided, and a plurality of the vents are provided in a circular array with the fixing portion as the center. A plurality of the spacers are provided, so that a plurality of vents are provided. A plurality of vents are provided to transport the gas after heat exchange.

[0013] Preferably, the fixing part is provided with an interlocking column, and the two ends of the shaft body are provided with an interlocking opening interlocked with the interlocking column. The shaft body and the fixing part are connected by the interlocking opening and the interlocking column. This connection method is simple, reliable, and easy to assemble. At the same time, the shaft body is restricted between the fixing parts, the fitting part is in conflict with the opening setting, and the shaft body and the quartz tube are coaxially arranged, so that the heat exchange process is stable and controllable.

[0014] A heating device comprising any heating tube as described above.

[0015] This application has achieved beneficial technical effects:

[0016] The utility model has a coaxially fixed arrangement inside the quartz tube to make the gas rotate and collide with the inner surface of the quartz tube. The quartz tube is a quartz heating tube; the quartz tube is provided with a gas-guiding rotating shaft, so that when the gas passes through the gas-guiding rotating shaft, a rotating airflow is formed, and the rotating airflow collides with the inner wall of the quartz tube, thereby increasing the thermal conductivity, and an inner layer air duct of the heating tube is formed between the gas-guiding rotating shaft and the quartz tube, so that the heat radiated by the quartz heating tube to the inner wall is better transferred to the gas, thereby taking away more heat to improve the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the structure of the utility model;

[0018] Figure 2 Shown Figure 1 AA section structural diagram;

[0019] Figure 3 Shown is a side structural schematic diagram of the utility model;

[0020] Figure 4 The figure shows a front view of the structure of the gas-guiding rotating shaft of the utility model;

[0021] Figure 5 Shown is a schematic cross-sectional structure diagram of the gas-guiding rotating shaft of the utility model;

[0022] Figure 6 Shown is a schematic structural diagram of the gas-guiding rotating shaft of the utility model;

[0023] Figure 7 The structure schematic diagram shown is that the cross section of the quartz tube is circular;

[0024] Figure 8 The structure schematic diagram shown is that the cross section of the quartz tube is a square;

[0025] Fig. 9 The cross-section of the quartz tube is shown as an elliptical structural schematic diagram.

[0026] Reference numerals

[0027] 1-quartz tube; 2-air-guiding rotating shaft; 21-fixed frame; 22-axis body; 23-spiral part; 24-ventilation cavity; 11-tube body; 12-opening; 211-fitting part; 212-fixing part; 213-spacer bar; 214-ventilation port; 2121-embedded column; 221-embedded port. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0029] The technical solution of the utility model is described in detail below with specific embodiments.

[0030] Example 1

[0031] Reference Figure 1-Figure 7 A heating tube includes a quartz tube 1 through which gas is introduced and heats the gas, and a gas-guiding rotating shaft 2 is coaxially fixedly arranged inside the quartz tube 1 to make the gas rotate and collide with the inner surface of the quartz tube 1. The quartz tube 1 is a quartz heating tube; the gas-guiding rotating shaft 2 is arranged inside the quartz tube 1, so that when the gas passes through the gas-guiding rotating shaft, a rotating airflow is formed, and the rotating airflow collides with the inner wall of the quartz tube 1 to increase the thermal conductivity. An inner layer air duct of the heating tube is formed between the gas-guiding rotating shaft 2 and the quartz tube 1, so that the heat radiated from the inner wall of the quartz heating tube is better transferred to the gas, thereby taking away more heat to improve the heat exchange effect. The implementation method is simple and easy to implement, the overall equipment occupies a small volume, can be installed according to needs, and is applicable to many scenarios.

[0032] The gas-guiding rotating shaft 2 includes a fixing frame 21 disposed on both sides of the quartz tube 1, a shaft body 22 fixedly connected to the fixing frame 21 and coaxially disposed with the quartz tube 1, and a spiral portion 23 disposed on the outer surface of the shaft body 22. The shaft body 22 is disposed in the quartz tube 1, wherein the quartz tube 1 and the fixing frame 21 are fixedly connected. By arranging the fixing frame 21, the shaft body 22 can be coaxially disposed with the quartz tube 1, wherein the arrangement of the spiral portion 23 enables the introduced gas to form a spiral state and collide with the inner wall of the quartz tube 1, so as to better conduct the heat radiated by the quartz heating tube to the inner wall to the gas, thereby taking away more heat to improve the heat exchange effect.

[0033] The shaft 22, the spiral portion 23 and the inner surface of the quartz tube 1 form a ventilation cavity 24, which is spiral. The ventilation cavity 24 is arranged between the air guide rotating shaft 2 and the quartz tube 1 to form an inner layer air duct of the heating tube. The introduced gas forms a spiral state and collides with the inner wall of the quartz tube 1, so that the heat radiated by the quartz heating tube to the inner wall is better transferred to the gas, thereby taking away more heat to improve the heat exchange effect.

[0034] The pitch of the spiral portion 23 is A, the inner diameter of the quartz tube 1 is B, and the ratio between the pitch A of the spiral portion 23 and the inner diameter B of the quartz tube 1 is 1:1 to 1:2. The contact time and contact area of ​​the gas flow are determined according to the pitch of the spiral portion 23 and the diameter of the quartz tube 1 to adjust the heat exchange effect.

[0035] The diameter of the shaft body 22 is C, and the inner diameter of the quartz tube 1 is B, wherein the ratio between the diameter C of the shaft body 22 and the inner diameter B of the quartz tube 1 is 1:2 to 1:3. The size of the ventilation cavity is adjusted according to the diameter of the shaft body 22 and the inner diameter of the quartz tube, thereby determining the flow area of ​​the gas to adjust to the desired heat exchange effect.

[0036] The quartz tube 1 has a circular cross section along its radial direction. The shape of the quartz tube 1 can be changed according to the needs of gas heat exchange.

[0037] The quartz tube 1 includes a tube body 11 and openings 12 arranged on both sides of the tube body, wherein the edges of the openings 12 are in conflict with the inner surface of the fixing frame 21. The openings 12 are connected to the ventilation cavity 24. The fixing frames 21 are arranged on both sides, and the fixing frames 21 are connected to the shaft body 22, so that the shaft body 22 can be erected inside the quartz tube 1. This connection method is simple, is conducive to modular connection assembly, and reduces the difficulty of preparation.

[0038] The fixing frame 21 includes a fitting portion 211 that contacts the edge of the opening 12, a fixing portion 212 connected to the shaft body 22, and a spacer bar 213 connecting the fitting portion 211 and the fixing portion 212. A vent 214 is arranged between the spacer bars 213, and the vent 214 is connected to the opening 12; the cross-sectional shape of the fitting portion 211 along its radial direction is the same as the cross-sectional shape of the tube body 11 along its radial direction. By setting the fitting portion 211, the fixing portion 212 and the spacer bar 213, when the fixing portion 212 is connected to the shaft body 22, the fitting portion 211 contacts the edge of the opening 12 and the fitting portion 211 is fixedly connected to the opening 12 of the tube body 11, so that the shaft body 22 is coaxially mounted inside the quartz tube 1, the connection and fixing method is simple, the assembly is convenient, and the overall volume of the device is small. The vent 214 is arranged in plurality, and a plurality of vents are arranged in a circular array with the fixing portion 212 as the center. The spacer bars 213 are provided in plurality, so that a plurality of vents 214 are provided. The plurality of vents 214 are provided to transport the gas after heat exchange.

[0039] The fixing part 212 is provided with an interlocking column 2121, and both ends of the shaft body 22 are provided with an interlocking opening 221 interlocked with the interlocking column 2121. The shaft body 22 and the fixing part 212 are connected by the interlocking opening 221 and the interlocking column 2121. This connection method is simple, reliable, and easy to assemble. At the same time, the shaft body 22 is restricted between the fixing parts 212, the fitting part 211 is in conflict with the opening 12, and the shaft body 22 is coaxially arranged with the quartz tube 1, so that the heat exchange process is stable and controllable.

[0040] A heating device comprising the heating tube as described above.

[0041] The quartz tube is a quartz heating tube; the technical solution is to insert an air-guiding rotating shaft into the inner core of the quartz heating tube, so that when the gas passes through the air-guiding rotating shaft, the gas hits the inner wall of the quartz heating tube to form an inner layer air duct of the heating tube, and better conducts the heat radiated by the quartz heating tube to the inner wall to the gas. The air-guiding rotating shaft fixing frame is used to fix the air-guiding rotating shaft. The inner core of the quartz heating tube is equipped with an air-guiding rotating shaft to form a rotating air flow duct; the inner core of the quartz heating tube is equipped with an air-guiding rotating shaft to form a rotating air flow duct; the gas hits the inner wall of the quartz heating tube, and the heat radiated by the heating tube to the inner wall is more efficiently taken out. In this technical solution, the problem that the gas flow can only take away a small part of the heat when passing through the inner wall of the quartz heating tube is overcome. Therefore, a rotating shaft structure is added to the inner wall of the quartz heating tube, so that the gas passes through the rotating shaft to form a rotating airflow. The airflow collides with the quartz heating tube, increases the thermal conductivity, and takes away more heat. This structure can improve the heat radiated from the inner wall of the quartz heating tube and transfer it to the gas more quickly, thus achieving high energy efficiency.

[0042] Example 2

[0043] This embodiment only describes the differences from the above embodiment, and other technical features are the same. In this embodiment, refer to Figure 8 , Fig. 9 The cross-section of the quartz tube along its radial direction is changed to one of a square and an elliptical shape.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0046] The above is a detailed description of the embodiments of a heating tube and a heating device provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A heating tube, comprising a quartz tube (1) for passing gas and heating the gas, characterized in that: A gas-guiding rotating shaft (2) is coaxially fixedly arranged inside the quartz tube (1) to enable the gas to rotate and collide with the inner surface of the quartz tube (1).

2. The heating tube according to claim 1, characterized in that: The air-guiding rotating shaft (2) comprises a fixing frame (21) arranged on both sides of the quartz tube (1), a shaft body (22) fixedly connected to the fixing frame (21) and arranged coaxially with the quartz tube (1), and a spiral portion (23) arranged on the outer surface of the shaft body (22).

3. The heating tube according to claim 2, characterized in that: A ventilation cavity (24) is formed between the shaft (22), the spiral portion (23) and the inner surface of the quartz tube (1), and the ventilation cavity (24) is spiral-shaped.

4. The heating tube according to claim 2, characterized in that: The pitch of the spiral portion (23) is A, the inner diameter of the quartz tube (1) is B, and the ratio between the pitch A of the spiral portion (23) and the inner diameter B of the quartz tube (1) is 1:1 to 1:

2.

5. The heating tube according to claim 2, characterized in that: The diameter of the shaft body (22) is C, and the inner diameter of the quartz tube (1) is B, wherein the ratio between the diameter C of the shaft body (22) and the inner diameter B of the quartz tube (1) is 1:2 to 1:

3.

6. The heating tube according to claim 1, characterized in that: The quartz tube (1) has a radial cross-section that is one of circular, square and elliptical.

7. The heating tube according to claim 2, characterized in that: The quartz tube (1) comprises a tube body (11) and openings (12) arranged on both sides of the tube body, and the edges of the openings (12) are in conflict with the inner surface of the fixing frame (21).

8. The heating tube according to claim 7, characterized in that: The fixing frame (21) comprises a fitting portion (211) that contacts the edge of the opening (12), a fixing portion (212) connected to the shaft body (22), and a spacing bar (213) connecting the fitting portion (211) and the fixing portion (212); a vent (214) is arranged between the spacing bars (213), and the vent (214) is connected to the opening (12); the cross-sectional shape of the fitting portion (211) along its radial direction is the same as the cross-sectional shape of the tube body (11) along its radial direction.

9. The heating tube according to claim 8, characterized in that: The fixing portion (212) is provided with an embedding column (2121), and both ends of the shaft body (22) are provided with embedding openings (221) that are embedded with the embedding column (2121).

10. A heating device comprising the heating tube according to any one of claims 1 to 9.

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