Infrared radiation quick heating device

Abstract

The utility model relates to the technical field of electric heating devices, in particular to an infrared radiation quick heating device. The infrared radiation quick heating device comprises a shell and a heating pipe arranged in the shell, a mask covers an opening of the shell, a light passing channel is formed in the mask, a reflecting cover is arranged in the shell and provided with two side walls arranged in the axial direction of the heating pipe at intervals, and penetrating holes allowing the ends of the heating pipe to penetrate in a matched mode are formed in the two side walls. A heating part, located between the two ends and used for radiating infrared light outwards, of the heating pipe is located in an inner cavity of the reflecting cover, the opening end of the reflecting cover is in butt joint with the face cover, and the inner wall faces of all the sides of the inner cavity of the reflecting cover are located on the periphery of the heating part and are smooth reflecting faces. Infrared light can be well blocked from radiating to the shell through the reflecting cover, so that the temperature of the shell is prevented from being too high, the situation that a user is scalded due to careless touch is not prone to occurring, and use safety is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating devices, in particular to an infrared radiation rapid heating device. Background Art

[0002] Infrared radiation heat transfer is a form of electric heating with rapid heat exchange and high energy efficiency. It has important applications in industrial heating, food cooking, health-enhancing heating, infrared medical treatments, and other fields. Graphene, as a novel heating material, is being used in electric infrared radiation heating. Graphene materials possess exceptional strength and toughness, high electrical conductivity and heat transfer properties, and excellent chemical inertness. These exceptional properties are based on an extremely low lattice defect rate. For example, a low-defect graphene material disclosed in Chinese invention patent authorization publication number CN108358191B demonstrates excellent performance and could lay the foundation for low-cost, high-performance graphene-based electric heating technology. Graphene's application in infrared radiation heating technology is primarily in the manufacture of heating tubes. The main body of a heating tube is typically a quartz tube filled with an inert gas. The inner wall of the tube is coated with a graphene film, and electrodes are mounted at both ends. By applying electricity to the electrodes at both ends of the heating tube, the graphene film heats up, generating infrared radiation. Upon absorption by a receptor, the energy is converted into heat, providing warmth or heating.

[0003] The basic structure of a common rapid heating device using infrared radiation can be found in a combinable far-infrared heating plate disclosed in the Chinese invention patent application with application publication number CN104754783A. The heating plate includes a box body, a reflective plate, a heating tube, and a panel. The box body is the outer shell of the device, the heating tube is a heating tube that generates heat when powered on, the panel is a mask with a hole structure, the panel cover is arranged at the front opening of the box body, the holes on the panel constitute a light channel, the reflective plate is located on the rear side of the heating tube, and the mask is located on the front side of the heating tube. The infrared light generated by the heating tube can be radiated forward through the mask and backward through the reflection of the reflective plate and radiated through the mask.

[0004] During the use of the infrared radiation rapid heating device, the infrared light generated by the heating tube will not only radiate to the reflective plates and mask on the front and back sides, but also a small part will radiate upward, downward, left and right around, and then radiate to the corresponding side walls of the device casing, which can easily cause the casing temperature to be high. Users may accidentally touch it and get burned, affecting safety of use. In addition, the high casing temperature can easily damage the electronic components inside the device. Utility Model Content

[0005] The purpose of the utility model is to provide an infrared radiation rapid heating device to solve the problem that the current infrared radiation rapid heating device easily causes the shell temperature to be high due to infrared light radiation onto the shell, thereby affecting the safety of use.

[0006] The technical solution of the infrared radiation rapid heating device of the utility model is:

[0007] An infrared radiation rapid heating device includes an outer shell and a heating tube arranged in the outer shell. A mask is provided at the opening of the outer shell, and a light passage is provided on the mask. A reflector is provided in the outer shell. The reflector has two side walls spaced apart in the axial direction of the heating tube and the two side walls are provided with through holes for the ends of the heating tube to fit through. The heating part of the heating tube located between the two ends and used for radiating infrared light outward is located in the inner cavity of the reflector. The open end of the reflector is connected to the mask. The inner wall surfaces on each side of the inner cavity of the reflector are located on the periphery of the heating part and are all smooth reflective surfaces.

[0008] Beneficial effect: The utility model makes element changes on the basis of the infrared radiation rapid heating device in the prior art. A reflector is set in the shell, and the two axial ends of the heating tube can be connected through the through holes on the corresponding two side walls of the reflector. At the same time, the heating tube passes through the side wall of the reflector so that the heating part of the heating tube located between the two ends for radiating infrared light outward is located in the inner cavity of the reflector. The heating part of the heating tube is covered by the reflector and the open end of the reflector is connected to the mask. The inner wall surfaces of the reflector on each side around the heating part of the heating tube are smooth reflective surfaces, so that the infrared light generated by the heating tube is directly radiated from the mask or reflected from the reflective surface formed by the inner wall surfaces on each side of the reflector cavity. The reflector can effectively block the infrared light from radiating to the shell, thereby avoiding the shell temperature being too high, and it is not easy for the user to be burned by accidentally touching it, which is beneficial to safety of use.

[0009] Furthermore, the open end of the reflector faces forward, the axial direction of the heating tube is in the up and down direction, and the two side walls of the reflector spaced apart in the axial direction of the heating tube are upper and lower side walls. The reflector has left and right side walls located on the left and right sides of the heating tube and a rear side wall located on the rear side of the heating tube. The side walls of the reflector form its inner cavity, and the left and right side walls of the reflector are inclined relative to the rear side wall. The spacing between the left and right side walls gradually increases from back to front, and an arc-shaped transition structure is provided at the junction of the left and right side walls and the rear side wall.

[0010] Furthermore, the open end of the reflector faces forward, the axial direction of the heating tube is in the up and down direction, and the two side walls of the reflector spaced apart in the axial direction of the heating tube are upper and lower side walls. The reflector includes an arc-shaped side wall located between the upper and lower side walls. The side walls of the reflector form its inner cavity, and the central angle corresponding to the arc surface of the arc-shaped side wall is less than 180°.

[0011] Furthermore, there are more than two heating tubes, and a fixing bracket for mounting the ends of each heating tube is provided in the housing, and a cover fixing portion fixedly connected to the reflector is provided on the fixing bracket.

[0012] Furthermore, the reflector has two side walls spaced apart in the axial direction of the heating tube and are provided with convex edges extending away from the open end. The convex edges are located outside the inner cavity of the reflector and are provided with screw connection holes for the cover fixing part of the fixing bracket to be fixedly connected by screws.

[0013] Furthermore, the heating tube includes a tube body, and a graphene heating film made of low-defect graphene and having a negative temperature coefficient of resistance is provided on the inner wall of the tube body.

[0014] Furthermore, the open end of the reflector is provided with an outward-turned edge, and the outward-turned edge is used to be fixedly connected to the inner side surface of the mask.

[0015] Furthermore, there are more than two heating tubes, and a fixing bracket for mounting the ends of each heating tube is provided in the outer shell, and a shell fixing portion fixedly connected to the outer shell is provided on the fixing bracket.

[0016] Furthermore, the mask is a mesh structure made of metal wires, and the equivalent diameter of the metal wires is not greater than 3 mm.

[0017] Furthermore, the housing includes a frame and a back cover arranged at the rear end of the frame, the opening of the housing is located at the front end of the frame, and heat dissipation holes are provided on the back cover and / or the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of Example 1 of the infrared radiation rapid heating device of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of infrared emission spectrum of the heating tube of the infrared radiation rapid heating device;

[0020] Figure 3 for Figure 1 Schematic diagram of resistance change of the heating tube of the infrared radiation rapid heating device at different working temperatures;

[0021] Figure 4 for Figure 1 Schematic diagram of the temperature rise curves of the low-defect graphene heating tube and commercially available graphite and carbon fiber heating tubes;

[0022] Figure 5 This is a schematic structural diagram of the reflector of Example 2 of the infrared radiation rapid heating device of the present invention.

[0023] In the figure: 1. frame; 11. cavity; 12. fixed cavity wall; 2. back cover; 21. heat dissipation hole; 3. mask; 4. heating tube; 5. reflector; 51. upper side wall; 52. left side wall; 53. back side wall; 501. convex edge; 502. perforation; 6. fixing bracket; 61. shell fixing part; 62. cover body fixing part; 7. electronic control unit; 8. anti-dumping unit; 9. anti-slip spikes. DETAILED DESCRIPTION

[0024] The infrared radiation rapid heating device of the present invention utilizes a reflector to cover the heating part of the heating tube, which can effectively block the infrared light from radiating to the outer shell, thereby preventing the outer shell from being overheated. It is not easy for users to accidentally touch it and get burned, which is beneficial to safety of use.

[0025] Example 1 of the infrared radiation rapid heating device of the present utility model:

[0026] The infrared radiation rapid heating device includes a shell and a heating tube arranged in the shell. A mask is provided at the opening of the shell, and a light passage is provided on the mask. A reflector is provided in the shell. The reflector has two side walls spaced apart in the axial direction of the heating tube and the two side walls are provided with through holes for the ends of the heating tube to fit through. The heating part of the heating tube located between the two ends and used for radiating infrared light outward is located in the inner cavity of the reflector. The open end of the reflector is connected to the mask. The inner wall surfaces on each side of the inner cavity of the reflector are outside the heating part and are all smooth reflective surfaces. The reflective surface of the reflector is used to guide the infrared light to radiate outward through the mask. The reflector can effectively block the infrared light from radiating to the shell, thereby avoiding excessive temperature of the shell, which is beneficial to the safety of the device.

[0027] Specifically, if Figure 1 As shown, the infrared radiation rapid heating device includes a housing, a mask 3, a heating tube 4, a reflector 5, a fixing bracket 6, an electronic control unit 7, and an anti-dumping unit 8. The housing includes a frame 1 and a back cover 2. The back cover 2 is used to cover the rear end of the frame 1 to enclose the housing cavity, in which the heating tube 4 is located. The front end of the frame 1 forms the housing opening, and the mask 3 is provided to cover the housing opening. The mask 3 has a mesh structure to form a light channel, and the infrared light generated by the heating tube 4 can be radiated out through the mask 3.

[0028] The reflector 5 is located within the housing, with a gap of no less than 3 cm between the reflector 5 and the housing. The reflector 5 has two side walls spaced apart in the axial direction of the heating tube 4, with the axial direction of the heating tube 4 being vertical. The two side walls of the reflector 5 spaced apart in the axial direction of the heating tube 4 are an upper side wall 51 and a lower side wall, respectively. The upper side wall 51 and the lower side wall each have a through-hole 502 for the ends of the heating tube 4 to pass through. The upper and lower ends of the heating tube 4 pass through the upper side wall 51 and the lower side wall of the reflector 5, respectively. The heating portion of the heating tube 4, located between the two ends and radiating infrared light, is located within the inner cavity of the reflector 5. The open end of the reflector 5 faces forward and abuts the face mask 3. The inner wall surfaces of the inner cavity of the reflector 5 are located outside the heating portion of the heating tube 4 and are smooth, reflective surfaces. The reflector 5 covers the heating portion of the heating tube 4, allowing the infrared light generated by the heating tube 4 to be radiated out of the mask 3 directly or after being reflected by the reflective surfaces formed by the inner walls of the reflector 5. The reflector 5 and the mask 3 are connected to form a relatively closed space, which helps reduce the radiation of infrared light to the housing, thereby preventing the housing from heating up rapidly. This prevents users from accidentally touching the housing and causing burns, thereby improving safety. At the same time, it also prevents electronic components installed in the housing from being damaged by the high temperature of the housing. Moreover, the reflector 5 can reflect infrared light from different directions, which helps improve the utilization rate of infrared light.

[0029] The heating tube 4 includes a tube body and a heating film covered on the inner wall of the tube body. The tube body is made of quartz. Electrodes are provided at both ends of the tube body. The electrodes are connected to leads, which are used to connect to an external circuit. A sealing head is provided at the junction of the electrode and the lead. The sealing head is located at the end of the heating tube 4. The outer diameter of the sealing head is larger than the outer diameter of the tube body. The sealing head is used to pass through the perforation 502 on the side wall of the corresponding reflector 5. The part of the heating tube 4 that radiates infrared light is located between the sealing heads at both ends.

[0030] The reflector 5 has a left side wall 52 and a right side wall located on the left and right sides of the heat pipe 4, and a rear side wall 53 located on the rear side of the heat pipe 4. The side walls of the reflector 5 form an inner cavity of the reflector 5. The inner wall surfaces of the upper side wall 51, lower side wall, left side wall 52, right side wall, and rear side wall 53 of the reflector 5 are all smooth reflective surfaces. The distance between the rear side wall 53 and the heat pipe 4 is not less than 3 cm. The left side wall 52, right side wall, and rear side wall 53 of the reflector 5 are arranged parallel to the axis of the heat pipe 4, which is beneficial for reducing the front-to-back dimensions of the reflector 5 while ensuring the inner cavity space of the reflector 5. In other embodiments, the reflector can also have adjacent left and right side walls arranged in a V-shape, and the left and right side walls and the upper and lower side walls form the inner cavity of the reflector. The left and right sidewalls of the reflector 5 are inclined relative to the rear sidewall 53, with the spacing between the left and right sidewalls gradually increasing from back to front. A curved transition structure, i.e., a rounded transition structure, is provided where the left and right sidewalls meet the rear sidewall 53. The infrared light generated by the heating tube 4 is radiated by the inclined left and right sidewalls and reflected toward the side where the mask 3 is located, thus achieving directional radiation. In other embodiments, the left and right sidewalls of the reflector can also be perpendicular to the rear sidewall.

[0031] There are two heating tubes 4 spaced apart from each other. Correspondingly, the reflector 5 is provided with respective through-holes 502 for the corresponding heating tubes 4 to pass through. The heating tubes 4 are fixed together by a fixing bracket 6, which is installed in the housing. The fixing bracket 6 is provided with two upper and lower fixing brackets. The upper fixing bracket 6 is provided for the upper end of each heating tube 4 to be installed, and the lower fixing bracket 6 is provided for the lower end of each heating tube 4 to be installed. The upper and lower fixing brackets 6 are symmetrically arranged. The main body of the fixing bracket 6 is provided with a horizontal mounting portion for the ends of the heating tubes 4 to be fixedly installed. The fixing bracket 6 is provided with a cover fixing portion 62 fixedly connected to the reflector 5. The cover fixing portion 62 is located between the two heating tubes 4. The cover fixing portion 62 is used to fix the fixing bracket 6 to the reflector 5. The fixing bracket 6 fixes each heating tube 4, which can ensure the installation position of the heating tube 4 relative to the reflector 5, which is conducive to ensuring the reflection direction of the infrared light. In other embodiments, the fixing bracket and the reflector are not fixed, and the fixing bracket and the reflector are fixed to the housing separately.

[0032] The upper and lower side walls of the reflector 5 are each provided with a rearwardly extending flange 501. The flange 501 extends away from the open end of the reflector 5 and projects rearwardly beyond the rear side wall 53 of the reflector 5. The flange 501 is located outside the inner cavity of the reflector 5 and is provided with screw holes for screwing the cover fixing portion 62 of the fixing bracket 6. This allows the fixing bracket 6 to be fixed outside the inner cavity of the reflector 5, preventing screws from penetrating the inner cavity of the reflector 5 and affecting the reflection of infrared light, and facilitating the use of external space for screw connection operations. In other embodiments, threaded holes that penetrate the inner cavity of the reflector can also be provided directly on the upper and lower side walls of the reflector to allow the cover fixing portion of the fixing bracket to be screwed.

[0033] The fixing bracket 6 is provided with a shell fixing portion 61 fixedly connected to the shell, and the shell fixing portion 61 is used to fix with the frame 1 to improve the stability of the fixing bracket 6 and ensure the structural strength. In other embodiments, the fixing bracket can also be fixedly connected to the mask instead of the shell.

[0034] The frame 1 is a square structure having four sides, upper, lower, left and right. Supports are provided on the inner sides of the upper and lower sides of the frame 1, and a cavity 11 is formed at the support. The cavity 11 is adapted to the shape of the electronic control unit 7, wherein the cavity 11 provided on the upper side of the frame 1 allows the electronic control unit 7 to be loaded into the cavity 11 from the rear side. The cavity 11 at the upper side of the frame 1 constitutes an installation cavity for the electronic control unit 7 provided on the side wall of the housing. The electronic control unit 7 includes a box body and electronic components provided in the box body. Lugs are provided on the left and right edges of the box body. The cavity 11 has a portion for loading the main body of the electronic control unit 7 and a portion for avoiding the lugs on the box body of the electronic control unit 7. The space in the upper and lower directions of the portion of the cavity 11 for loading the main body of the electronic control unit 7 is larger than the space in the upper and lower directions of the portion for avoiding the lugs on the box body of the electronic control unit 7. The portion of the cavity 11 used to avoid the lug on the box body of the electronic control unit 7 is provided with a fixed cavity wall 12. The fixed cavity wall 12 is arranged horizontally and is provided with fixing holes corresponding to the connection holes on the lug of the electronic control unit 7 so that the electronic control unit 7 can be fixed by screws after being installed in the corresponding cavity 11.

[0035] The fixed cavity wall 12 is also provided with a connection hole for the fixed bracket 6 to be fixedly connected. The fixed cavity wall 12 constitutes a cavity wall for the mounting cavity to which the shell fixing portion 61 of the fixed bracket 6 is fixedly connected by screws. The shell fixing portion 61 of the fixed bracket 6 is a portion that is overhanging backward based on the upper end of its main body. The shell fixing portion 61 can be abutted against the outer wall surface of the fixed cavity wall 12 and fixedly connected by screws. The electronic control unit 7 and the fixed bracket 6 are fixedly installed together, and the structure is compact, which is conducive to saving space. In other embodiments, if space permits, the electronic control unit and the fixed bracket can also be fixed in different positions, and the electronic control unit can be arranged on one side of the fixed bracket in the left and right directions.

[0036] The open end of the reflector 5 is provided with an outward-turned edge. The front ends of the upper and lower side walls of the reflector 5 are both provided with vertical outward-turned edges. The fixing bracket 6 is located behind the outward-turned edge. The outward-turned edge is used to securely connect with the inner side of the face mask 3 and can be fixed with screws by providing screw holes in the outward-turned edge. In other embodiments, the outward-turned edge can also be omitted, and the edge of the open end of the reflector can be fixed to the face mask by spot welding.

[0037] The face shield 3 forms a radiation window and is welded to the front end of the frame 1. The back cover 2 is detachably connected to the rear end of the frame 1 and secured to the frame 1 with screws. The back cover 2 is provided with heat dissipation holes 21 to improve heat dissipation and prevent heat accumulation within the device. In other embodiments, heat dissipation holes can be provided on the side of the frame instead of the back cover, or on both the back cover and the frame.

[0038] The upper side of the frame 1 is provided with a handle for easy access. The lower side of the frame 1 of the housing is provided with anti-slip nails 9 to play a supporting role and to separate the bottom of the device from the ground, which is conducive to heat dissipation at the bottom of the device.

[0039] The anti-dump unit 8 is located in the upper right corner of the frame 1. It utilizes a photoelectric tilt switch to promptly disconnect power if the device accidentally tips over, preventing unsafe conditions. The electronic control unit 7 and anti-dump unit 8 are located within the housing, helping to maintain a stable center of gravity. They also more accurately sense changes in the center of gravity if the device tips over, immediately disconnecting power to ensure safe use. The electronic control unit 7 is equipped with a remote control function for temperature adjustment and power on / off operation.

[0040] The reflector 5 can be made of metals such as aluminum, stainless steel, and copper, and the reflective surface has mirror flatness. The mask 3 is composed of a mesh of metal wires, and the material of the metal wires can be metals such as aluminum, copper, iron, or their solid solution alloys. The surface of the metal wires is smooth, and the preferred equivalent diameter of the metal wires is not greater than 3 mm. On the basis of ensuring mechanical properties, it effectively reduces the obstruction of infrared rays, and the device itself will not heat up rapidly due to irradiation, and it also serves to prevent external objects from directly touching the heating elements and causing unsafe factors. The reflector component promotes efficient reflection of infrared rays. In the absence of additional cooling mechanisms such as additional air cooling and liquid cooling, the surface temperature of the device housing and the outer surface of the radiation window is no higher than 50 degrees Celsius.

[0041] The heating tube in this embodiment uses a graphene heating film made of low-defect graphene, which has a negative temperature coefficient of resistance. In other embodiments, a carbon fiber heating tube can also be used.

[0042] The low-defect graphene material used in the heating pipe of this embodiment can be obtained by the preparation method described in the Chinese invention patent document with the authorization announcement number CN108358191B, or can be purchased. The heating pipe made of this low-defect graphene has better performance. Figure 2 、 Figure 3 、 Figure 4 The infrared radiation spectrum of the graphene-based heating tube in this embodiment covers the near-infrared, mid-infrared, and far-infrared bands, with infrared radiation primarily concentrated in the mid-to-far wavelengths (2 to 15 μm). After the receptor absorbs the infrared radiation, the energy is converted into heat energy, achieving an electrothermal radiation conversion efficiency exceeding 50%, resulting in relatively high energy utilization. Furthermore, the electrothermal response is fast, enabling higher heating temperatures. Graphene's unique negative temperature coefficient of resistance (TCR) ensures a long service life and significantly exceeds the electrothermal radiation conversion efficiency of graphite- and carbon fiber-based heating tubes. This device has broad application prospects in areas such as high-temperature rapid heating and healthy heating.

[0043] Example 2 of the infrared radiation rapid heating device of the present utility model:

[0044] The infrared radiation quick heating device in this embodiment is different from the infrared radiation quick heating device in the above embodiment 1 in the shape of the reflector, such as Figure 5 As shown, the reflector 5 includes a curved sidewall disposed around the heating tube 4. The curved sidewall extends parallel to the axial direction of the heating tube 4. The ends of the curved sidewall are connected to the upper and lower sidewalls of the reflector 5 to enclose the reflector's inner cavity. The vertical projection of the curved sidewall is an arc. The left and right edges of the curved sidewall are provided with hems and fixed to the frame 1. The rear cover 2 is disposed behind the curved sidewall. The central angle corresponding to the inner curved surface of the curved sidewall is less than 180°.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An infrared radiation rapid heating device, characterized in that: It includes an outer shell and a heating tube arranged in the outer shell. A mask is provided at the opening of the outer shell, and a light passage is provided on the mask. A reflector is provided in the outer shell. The reflector has two side walls spaced apart in the axial direction of the heating tube and the two side walls are provided with through holes for the ends of the heating tube to fit through. The heating part of the heating tube located between the two ends and used for radiating infrared light outward is located in the inner cavity of the reflector. The open end of the reflector is connected to the mask. The inner wall surfaces on each side of the inner cavity of the reflector are outside the heating part and are all smooth reflective surfaces.

2. The infrared radiation rapid heating device according to claim 1, characterized in that: The open end of the reflector faces forward, the axial direction of the heating tube is in the up-down direction, and the two side walls of the reflector spaced apart in the axial direction of the heating tube are upper and lower side walls. The reflector has left and right side walls located on the left and right sides of the heating tube and a rear side wall located on the rear side of the heating tube. The side walls of the reflector form its inner cavity. The left and right side walls of the reflector are inclined relative to the rear side wall. The spacing between the left and right side walls gradually increases from the back to the front, and an arc-shaped transition structure is provided at the junction of the left and right side walls and the rear side wall.

3. The infrared radiation rapid heating device according to claim 1, characterized in that: The open end of the reflector faces forward, the axial direction of the heating tube is in the up-down direction, and the two side walls of the reflector spaced apart in the axial direction of the heating tube are upper and lower side walls. The reflector includes an arc-shaped side wall located between the upper and lower side walls. The side walls of the reflector enclose its inner cavity, and the central angle corresponding to the arc surface of the arc-shaped side wall is less than 180°.

4. The infrared radiation rapid heating device according to claim 1, 2 or 3, characterized in that: There are more than two heating tubes, and a fixing bracket for mounting the ends of each heating tube is provided in the shell. The fixing bracket is provided with a cover body fixing part fixedly connected to the reflector.

5. The infrared radiation rapid heating device according to claim 4, characterized in that: The two side walls of the reflector spaced apart in the axial direction of the heating tube are provided with convex edges extending away from the open end. The convex edges are located outside the inner cavity of the reflector and are provided with screw connection holes for the cover fixing part of the fixing bracket to be fixedly connected by screws.

6. The infrared radiation rapid heating device according to claim 1, 2 or 3, characterized in that: The heating tube comprises a tube body, on the inner wall of which is provided a graphene heating film made of low-defect graphene and having a negative temperature coefficient of resistance.

7. The infrared radiation rapid heating device according to claim 1, 2 or 3, characterized in that: The open end of the reflector is provided with an outward turning edge, which is used for being fixedly connected with the inner side surface of the mask.

8. The infrared radiation rapid heating device according to claim 1, 2 or 3, characterized in that: There are more than two heating tubes, and a fixing bracket for mounting the ends of each heating tube is provided in the shell. The fixing bracket is provided with a shell fixing part fixedly connected to the shell.

9. The infrared radiation rapid heating device according to claim 1, 2 or 3, characterized in that: The mask is a mesh structure made of metal wire, and the equivalent diameter of the metal wire is not greater than 3mm.

10. The infrared radiation rapid heating device according to claim 1, 2 or 3, characterized in that: The shell includes a frame and a back cover arranged at the rear end of the frame. The opening of the shell is located at the front end of the frame. Heat dissipation holes are arranged on the back cover and / or the frame.

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