Special infrared radiation heating device for high-temperature glass

Abstract

The invention discloses a special infrared radiation heating device for high-temperature glass, which is suitable for manufacturing glass elements under high-temperature conditions and comprises a heating cavity, an infrared radiation lamp tube, a radiation screen, a shell and a flange assembly, the heating cavity is accommodated in the shell and is fixedly connected with the shell through a flange assembly, so that a closed environment is formed in the heating cavity; the infrared radiation lamp tube is wound on the outer side wall of the heating cavity; the radiation screen surrounds and wraps the heating cavity and the infrared radiation lamp tube and is fixed in the shell through a flange assembly; to-be-processed glass is arranged in the heating cavity, the infrared radiation lamp tube is used for heating the heating cavity, and the radiation screen can reflect high-temperature radiation generated by the infrared radiation lamp tube to the heating cavity. The device adopts an infrared radiation lamp tube as a main heating source, and the temperature can be rapidly increased to 1600 DEG C or above. And the matched radiation screen reflects infrared heat radiation, so that the heat energy utilization efficiency is improved, and meanwhile, the generation of glass thermal stress and deformation is reduced.

Description

Technical Field

[0001] The invention relates to the field of glass manufacturing, and in particular to an infrared radiation heating device dedicated to high-temperature glass. Background Art

[0002] In the manufacture of optical glass components, molding process is an important forming method, especially suitable for manufacturing high-precision aspheric lenses, optical lenses, etc. However, most of the current glass molding equipment uses resistance heating or induction heating to heat the mold, and these methods have certain limitations.

[0003] Although resistance heating is common, it has a slow heating speed and is prone to causing local overheating or uneven heating of the glass. Although induction heating is more efficient, it requires the mold material to be conductive, which limits the types of mold materials that can be used.

[0004] At the same time, the induction heating device is complex and costly, and its uniformity and accuracy of temperature control are difficult to meet the higher requirements of optical component manufacturing processes. Summary of the invention

[0005] In view of the above problems, the present invention is proposed to provide an infrared radiation heating device dedicated to high-temperature glass, which overcomes the above problems or at least partially solves the above problems.

[0006] According to one aspect of the present invention, there is provided an infrared radiation heating device dedicated to high-temperature glass, which is suitable for the manufacture of glass elements under high-temperature conditions, and comprises: a heating chamber, an infrared radiation lamp tube, a radiation screen, a shell and a flange assembly; the heating chamber is accommodated in the shell and fixedly connected to the shell via the flange assembly to form a closed environment in the heating chamber; the infrared radiation lamp tube is wound around the outer wall of the heating chamber; the radiation screen surrounds and wraps the heating chamber and the infrared radiation lamp tube, and is fixed in the shell via the flange assembly; the glass to be processed is arranged in the heating chamber, the infrared radiation lamp tube is used to heat the heating chamber, and the radiation screen can reflect the high-temperature radiation generated by the infrared radiation lamp tube to the heating chamber.

[0007] Optionally, in the heating device according to the present invention, a plurality of air inlet holes are provided on the surface of the shell for conveying cooling gas into the shell.

[0008] Optionally, in the heating device according to the present invention, the radiation screen is a cylindrical structure, and an array of vent holes are arranged on the side wall of the radiation screen so that the cooling gas can be blown toward the infrared radiation lamp tube and the heating chamber through the vent holes.

[0009] Optionally, in the heating device according to the present invention, cooling water channels are evenly distributed on the top of the radiation screen side wall; a water inlet and a water outlet are arranged on the flange assembly; and the water inlet, cooling water channel and water outlet are connected.

[0010] Optionally, in the heating device according to the present invention, the heating chamber includes a quartz cover, a first mold support and a second mold support, the quartz cover is an annular hollow structure, the first side of the first mold support is abutted against the first bottom surface of the hollow structure, the first side of the second mold support is abutted against the second bottom surface of the hollow structure, and an accommodating space for accommodating the glass to be processed is formed between the second side of the first mold support and the second side of the second mold.

[0011] Optionally, in the heating device according to the present invention, the flange assembly further includes an air outlet hole for discharging the cooling gas inside the shell.

[0012] Optionally, in the heating device according to the present invention, the infrared radiation lamp tube comprises a plurality of sub-lamp tubes, and each sub-lamp tube is arranged in a ring-like shape layer by layer to surround the heating cavity.

[0013] Optionally, in the heating device according to the present invention, a molding plate is arranged on the second side of the first mold support and / or the second side of the second mold for fixing the glass to be processed.

[0014] Optionally, in the heating device according to the present invention, the base is arranged at the bottom of the shell and fixed to the shell through a flange assembly.

[0015] Optionally, in the heating device according to the present invention, the closed environment of the heating chamber is a pure nitrogen environment or a vacuum environment.

[0016] Optionally, in the heating device according to the present invention, the power of the infrared radiation lamp is 800 watts.

[0017] According to the solution of the present invention, infrared radiation lamps are used as the main heating source, which can quickly heat up to more than 1600 degrees Celsius. The radiation screen provided in conjunction reflects infrared thermal radiation, improves the efficiency of heat energy utilization, reduces energy waste, and reduces the generation of thermal stress and deformation of glass. In addition, infrared heating is not limited by the conductivity of the mold material, and more high-temperature resistant and wear-resistant materials can be used, which helps to extend the life of the mold and reduce maintenance costs.

[0018] According to the solution of the present invention, water cooling channels and air holes are provided inside the radiation screen, and combined with the external cooling air chamber, a highly efficient cooling method combining water cooling and air cooling is realized.

[0019] The solution according to the present invention has the advantages of better heating uniformity, higher cooling efficiency, simpler and more economical equipment structure, etc. compared with traditional technologies, which significantly improves the quality and production efficiency of glass molding, while reducing energy consumption and equipment costs.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0022] Figure 1 A cross-sectional view showing a side view of an infrared radiation heating device 100 dedicated to high temperature glass according to an embodiment of the present invention;

[0023] Figure 2 A schematic cross-sectional view AA of a side view of an infrared radiation heating device 100 dedicated to high-temperature glass according to an embodiment of the present invention is shown;

[0024] Figure 3 An isometric diagram of an infrared radiation heating device 100 dedicated to high temperature glass according to one embodiment of the present invention is shown;

[0025] Figure 4 A front view of an infrared radiation heating device 100 dedicated to high-temperature glass according to an embodiment of the present invention is shown;

[0026] Figure 5 shows an isometric view of a radiation screen 130 according to one embodiment of the present invention;

[0027] Figure 6 FIG. 1 is a side view of an infrared radiation heating device 100 dedicated to high-temperature glass according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] At present, the heating of molding machines is usually carried out by resistance heating and induction heating. These methods have their own limitations: resistance heating is uneven and has low energy efficiency; induction heating is limited in applicable materials, has limited heating depth, is complex in equipment, and has high maintenance costs. In addition, the heating temperature of traditional molding machines is limited, usually the maximum temperature is 700 to 800 degrees Celsius, which makes it difficult to perform high-temperature heating tasks. Even if the high temperature is barely reached, the cooling effect is often not ideal.

[0030] In order to solve the problems existing in the above-mentioned prior art, the solution of the present invention is proposed. This application proposes an infrared radiation heating device dedicated to high-temperature glass, which adopts an infrared radiation lamp tube as the main heating source and can quickly heat up to above 1600 degrees Celsius. The radiation screen provided in conjunction reflects infrared thermal radiation, improves the efficiency of thermal energy utilization, reduces energy waste, and reduces the generation of thermal stress and deformation of glass. In addition, infrared heating is not limited by the conductivity of the mold material, and more high-temperature resistant and wear-resistant materials can be used, which helps to extend the life of the mold and reduce maintenance costs.

[0031] In this embodiment, Figure 1 A cross-sectional view showing a side view of an infrared radiation heating device 100 dedicated to high temperature glass according to an embodiment of the present invention, Figure 2 FIG. 2 is a schematic diagram of a cross-section AA of a side view of an infrared radiation heating device 100 for high-temperature glass according to an embodiment of the present invention, Figure 3 FIG. 1 shows an isometric diagram of an infrared radiation heating device 100 dedicated to high temperature glass according to an embodiment of the present invention. Figure 4 FIG. 1 shows a front view of an infrared radiation heating device 100 dedicated to high temperature glass according to an embodiment of the present invention. Figure 5 shows an isometric view of a radiation screen 130 according to one embodiment of the present invention, Figure 6 FIG. 1 is a side view of an infrared radiation heating device 100 dedicated to high-temperature glass according to an embodiment of the present invention.

[0032] Figure 1-Figure 6 As shown, the device 100 includes a heating chamber 110 , an infrared radiation lamp tube 120 , a radiation screen 130 , a housing 140 , a flange assembly 150 and a base 160 .

[0033] The flange assembly 150 includes a first flange 151, a second flange 152, a third flange 153 and a fourth flange 154. The housing 140 is cylindrical in shape, with the bottom fixed by the fourth flange 154 and the top fixed by the third flange 153. The first flange 151 and the second flange 152 cover the third flange 153.

[0034] The first flange 151 , the second flange 152 and the third flange 153 are fixedly connected by bolts, and the fourth flange 154 and the base 160 are fixedly connected by bolts.

[0035] A closed cooling air chamber is formed by the flange assembly 150, the shell 140 and the base 160. A plurality of air inlet holes 141 are provided on the side wall of the shell 140 for conveying cooling gas into the cooling air chamber. The heating cavity 110, the infrared radiation lamp tube 120 and the radiation screen 130 are all accommodated in the cooling air chamber.

[0036] The heating chamber 110 is arranged at the center of the cooling chamber, and includes a quartz cover 111, a first mold support 112, and a second mold support 113. The quartz cover 110 is an annular hollow structure, and the first mold support 112 and the second mold support 113 are both bolt-style structures, and their cross-sections are "T"-shaped structures. The "nut" part of the first mold support 112 is fixedly connected to the upper bottom surface of the quartz cover 110, and the "stud" part extends into the hollow structure of the quartz cover 110. Similarly, the "nut" part of the second mold support 113 is fixedly connected to the lower bottom surface of the quartz cover 110, and the "stud" part extends into the hollow structure of the quartz cover 110.

[0037] The heating chamber 110 formed by the quartz cover 111, the first mold support 112 and the second mold support 113 can form a closed heating environment with the assistance of the housing 140 and the flange assembly 150. In some embodiments, the closed environment of the heating chamber 110 is a pure nitrogen environment or a vacuum environment.

[0038] A space for accommodating the glass 200 to be processed is formed between the “stud” portion of the first mold support 112 and the “stud” portion of the second mold support 113 , and the glass to be processed is fixed in the space during processing.

[0039] In some embodiments, in order to facilitate the fixing of the mold, the heating chamber 110 further includes a first mold plate 114 and a second mold plate 115. The first mold plate 114 is fixed to the bottom of the "stud" of the first mold support 112, and the second mold plate 115 is fixed to the bottom of the "stud" of the second mold support 113. During processing, the first mold plate 114 and the second mold plate 115 fix the glass 200 to be processed in the heating chamber 110.

[0040] The infrared radiation lamp tube 120 is disposed around the outer wall of the heating chamber 110 to provide a heat source. Specifically, the infrared radiation lamp tube 120 includes a plurality of sub-lamp tubes, each of which is arranged in a ring-shaped manner layer by layer around the outer wall of the quartz cover 111. In some embodiments, the power of the infrared radiation lamp tube 120 is 800 watts.

[0041] The radiation screen 130 surrounds the heating chamber 110 and the infrared radiation lamp tube 120 and is fixedly connected to the housing 140 via the flange assembly 150 to reflect infrared radiation, improve heating efficiency and reduce energy loss.

[0042] The radiation screen 130 is cylindrical in shape as a whole, and an array of vent holes 131 are arranged on its side wall so that the cooling gas can be blown toward the infrared radiation lamp tube 120 and the heating chamber 110 through the vent holes 131. The third flange 153 is also provided with an exhaust hole 1531 so that the cooling gas blown into the cooling air chamber can be discharged smoothly, ensuring that the cooling process is carried out efficiently. The cooling gas enters the cooling air chamber from the air inlet 141 of the housing 140, blows toward the infrared radiation lamp tube 120 and the heating chamber 110 through the vent holes 131, and is then discharged from the exhaust hole 1531.

[0043] In addition, cooling water channels 132 are evenly distributed on the top of the side wall (the upper bottom surface) of the radiation screen 130. Correspondingly, a water inlet 1541 is arranged on the fourth flange 154, and a water outlet 1532 is arranged on the third flange 153. The water inlet 1541, the cooling water channel 132 and the water outlet 1532 are connected, and the cooling liquid enters from the water inlet 1541 and is discharged from the water outlet 1532 after passing through the cooling water channel 132.

[0044] This combination of water cooling and air cooling greatly improves the cooling effect and can better complete the cooling task after high-temperature heating.

[0045] According to the device 100 of the present invention, the infrared radiation lamp tube 120 is used as the main heating source, which can quickly raise the temperature to above 1600 degrees Celsius. The radiation screen 130 provided in conjunction reflects infrared heat radiation, improves the efficiency of heat energy utilization, reduces energy waste, and reduces the generation of glass thermal stress and deformation. In addition, infrared heating is not limited by the conductivity of the mold material, and more high-temperature resistant and wear-resistant materials can be used, which helps to extend the life of the mold and reduce maintenance costs.

[0046] The radiation screen 130 is provided with water cooling channels and air holes inside, and combined with the external cooling air chamber, a highly efficient cooling method combining water cooling and air cooling is realized.

[0047] Compared with traditional technologies, the device 100 provided in the present application has the advantages of better heating uniformity, higher cooling efficiency, simpler and more economical equipment structure, etc., which significantly improves the quality and production efficiency of glass molding, while reducing energy consumption and equipment costs.

[0048] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0049] A11. The device as described in A1, wherein the power of the infrared radiation lamp is 800 watts.

[0050] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present invention and to form different embodiments.

[0051] As used herein, unless otherwise specified, the use of ordinal numbers "first," "second," "third," etc. to describe common objects merely indicates that different instances of similar objects are involved, and is not intended to imply that the objects so described must have a given order in time, space, order, or in any other manner.

[0052] Although the present invention has been described in terms of a limited number of embodiments, it will be apparent to those skilled in the art, having benefit of the above description, that other embodiments are contemplated within the scope of the invention thus described. Furthermore, it should be noted that the language used in this specification is selected primarily for readability and didactic purposes, rather than for the purpose of explaining or defining the subject matter of the present invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims.

Claims

1. An infrared radiation heating device for high temperature glass, suitable for manufacturing glass elements under high temperature conditions, comprising: Heating chamber, infrared radiation lamp tube, radiation screen, housing and flange assembly; The heating chamber is accommodated in the shell and is fixedly connected to the shell through the flange assembly to form a closed environment in the heating chamber; The infrared radiation lamp tube is arranged around the outer side wall of the heating chamber; The radiation screen surrounds and wraps the heating cavity and the infrared radiation lamp tube, and is fixed in the housing through the flange assembly; The glass to be processed is arranged in the heating chamber, the infrared radiation lamp tube is used to heat the heating chamber, and the radiation screen can reflect the high-temperature radiation generated by the infrared radiation lamp tube to the heating chamber.

2. The device according to claim 1, wherein: The shell surface is provided with a plurality of air inlet holes for conveying cooling gas into the shell.

3. The device as claimed in claim 2, wherein: The radiation screen is a cylindrical structure, and an array of vent holes are arranged on the side wall of the radiation screen so that the cooling gas can be blown toward the infrared radiation lamp tube and the heating cavity through the vent holes.

4. The device as claimed in claim 3, wherein: The top of the side wall of the radiation screen is evenly distributed with cooling water channels; The flange assembly is provided with a water inlet and a water outlet; The water inlet, cooling water channel and water outlet are connected.

5. The device according to claim 1, wherein: The heating chamber includes a quartz cover, a first mold support and a second mold support. The quartz cover is an annular hollow structure. The first side of the first mold support abuts against the first bottom surface of the hollow structure, and the first side of the second mold support abuts against the second bottom surface of the hollow structure. An accommodating space for accommodating glass to be processed is formed between the second side of the first mold support and the second side of the second mold.

6. The device according to claim 2, wherein: The flange assembly also includes an air outlet hole for discharging the cooling gas inside the shell.

7. The device of claim 1, wherein: The infrared radiation lamp tube comprises a plurality of sub-lamp tubes, and each sub-lamp tube is arranged in a ring-like shape layer by layer to surround the heating cavity.

8. The device according to claim 5, wherein: A molding plate is arranged on the second side of the first mold support and / or the second side of the second mold for fixing the glass to be processed.

9. The device of claim 1, wherein: Also includes: The base is arranged at the bottom of the shell and is fixed to the shell through the flange assembly.

10. The device of claim 1, wherein: The closed environment of the heating chamber is a pure nitrogen environment or a vacuum environment.

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