Rapid growth device for oversized crystals

Abstract

The utility model discloses an oversized crystal rapid growth device which comprises a crystal growth furnace, and a heat insulation outer layer is arranged on the surface of an outer ring of the crystal growth furnace; wherein the crystal growing furnace comprises a furnace body, a furnace cover connected to an upper end opening of the furnace body through a bolt and a lifting cavity formed in the upper surface of the furnace cover, a lifting machine is installed on the surface of the top of the lifting cavity, and a telescopic shaft of the lifting machine is connected with a lifting rod penetrating into the furnace body. According to the technical scheme, the heat insulation outer layer is arranged on the periphery of the crystal growing furnace, the sheath is formed by the two hollow arc-shaped jackets and the two hollow connecting blocks, the vacuum pipe and the vacuum pump are used for extracting air in the sheath, and transmission of temperature inside and outside the furnace is isolated in a pseudo-vacuum state in the sheath; therefore, the temperature in the furnace body is not influenced by the outside, and the temperature in the furnace rises to the reaction temperature in a short time, so that the effect that the super-large crystal grows quickly and is not influenced by the outside temperature is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crystal growth furnace equipment, in particular to a super-large crystal rapid growth device. Background Art

[0002] Crystal growth methods can be categorized into four main types based on the type of parent phase: melt growth, solution growth, vapor phase growth, and solid phase growth. Melt growth involves completely melting the raw materials at high temperatures, and then employing various techniques to produce single crystal materials that meet certain technical requirements under certain conditions. The melt must undergo directionally solidified under controlled conditions, and the growth process is accomplished through the movement of the solid-liquid interface. Melt growth is the most commonly used and important method for preparing large single crystals and single crystals of specific shapes, with the advantages of rapid growth and high crystal purity and integrity.

[0003] Since melt growth typically utilizes a crystal growth furnace, maintaining uniform temperature control within the reaction system to prevent localized overheating or overcooling is a crucial factor influencing crystal nucleation and growth rates. The internal temperature of the furnace is affected not only by the heating elements but also by heat transfer between the ambient temperature and the furnace interior. Currently, however, crystal growth furnaces lack effective insulation and temperature control. Therefore, researchers have proposed a device for rapidly growing ultra-large crystals. Utility Model Content

[0004] The purpose of this utility model is to provide a technical solution for a device for rapid growth of ultra-large crystals to address the shortcomings of the background art. In order to address the drawbacks and defects of the background art, this technical solution has the following contents:

[0005] The invention comprises a crystal growth furnace, wherein the outer ring surface of the crystal growth furnace is provided with a heat-insulating outer layer; wherein the crystal growth furnace comprises a furnace body, a furnace cover connected to an upper end of the furnace body by bolts, and a lifting cavity provided on the upper surface of the furnace cover, a lifting machine is installed on the top surface of the lifting cavity, a telescopic shaft of the lifting machine is connected to a lifting rod extending through the interior of the furnace body, and a crystal block is provided at one end of the lifting rod located inside the furnace body;

[0006] An electrode is installed at the bottom of the inner cavity of the furnace body, a graphite heater is installed on the top surface of the electrode, a rotating motor is installed on the bottom end surface of the furnace body, and the output shaft of the rotating motor is connected to a graphite crucible that passes through the interior of the furnace body;

[0007] The heat-insulating outer layer includes two arc-shaped jackets arranged on the outer ring surface of the furnace body in a left-right mirror-symmetrical manner, and the ends of the arc-shaped jackets close to each other are connected to connecting blocks, and vacuum pumps are installed on the outer surfaces of the connecting blocks, and the extraction ends of the vacuum pumps are connected to vacuum tubes that penetrate into the interior of the connecting blocks; wherein, a main chamber is provided inside the arc-shaped jacket, a sub-chamber is provided inside the connecting block, and through holes that penetrate each other are provided between the sub-chamber and the main chamber, and a layer of aerosol felt glue is adhered and fixed to the surface of the arc-shaped jacket on the side away from the furnace body by adhesive.

[0008] As a preferred solution of the present invention: a visual sensor is installed on the top end face of the furnace cover, and frames are fixed on the end faces of the furnace cover and the furnace body that are close to each other, and 30-60 bolts are arranged in a circular array between the frames.

[0009] As a preferred solution of the present invention: an inert gas exhaust pipe is installed through the front end surface of the furnace body, and an inert gas inlet pipe is provided on the rear end surface of the furnace body.

[0010] As a preferred solution of the present invention: a side of the connecting block away from the furnace body is provided with circular holes for the inert gas inlet pipe and the inert gas outlet pipe to pass through.

[0011] As a preferred solution of the present invention: the end surface of the connecting block away from the furnace body is connected to a bracket, and the outer shell surface of the vacuum pump is connected to the outer surface of the bracket by screws.

[0012] As a preferred solution of the present invention: an air nozzle is installed at one end of the vacuum tube away from the vacuum pump, and the air nozzle is embedded in the interior of the connecting block.

[0013] As a preferred solution of the present invention: the interior of the aerosol felt adhesive is provided with 10-16 through holes in a circular array.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] In this technical solution, an insulating outer layer is provided on the periphery of the crystal growth furnace, and a sheath is formed by two hollow arc-shaped jackets and two hollow connecting blocks. The air inside the sheath is extracted by a vacuum tube and a vacuum pump, and the pseudo-vacuum state inside the sheath is used to isolate the temperature transfer inside and outside the furnace, so that the temperature inside the furnace body is not affected by the outside world, and the temperature inside the furnace is raised to the reaction temperature in a relatively short time, thereby achieving the effect of rapid growth of ultra-large crystals without being affected by external temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the overall structure of the crystal growth furnace;

[0018] Figure 2 This is a schematic diagram of a crystal growth furnace after cutting;

[0019] Figure 3 Schematic diagram of the thermal insulation components of the outer layer of the crystal growth furnace.

[0020] Description of reference numerals:

[0021] 1. Crystal growth furnace; 11. Furnace body; 12. Furnace cover; 13. Lifting chamber; 14. Hoist; 15. Lifting rod; 16. Visual sensor; 17. Crystal block; 18. Inert gas inlet pipe; 19. Rotating motor; 110. Electrode; 111. Graphite heater; 112. Graphite crucible; 113. Inert gas exhaust pipe; 2. Insulation outer layer; 21. Aerosol felt; 22. Main chamber; 23. Arc jacket; 24. Vacuum tube; 25. Gas nozzle; 26. Connecting block; 27. Vacuum pump; 28. Sub-chamber; 29. Bracket. DETAILED DESCRIPTION

[0022] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0023] The following description is merely exemplary in nature and is not intended to limit the present disclosure, its applications and uses. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various figures only schematically represent the concepts and principles of the embodiments of the present disclosure and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific figures may use exaggerated methods to illustrate the relevant details or structures of the embodiments of the present disclosure. The various publications, patents and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention.

[0024] Embodiment: A better technical solution for a device for rapid growth of ultra-large crystals.

[0025] Refer to the instruction manual Figure 2 As shown: it includes a crystal growth furnace 1, and an insulating outer layer 2 is provided on the outer ring surface of the crystal growth furnace 1; wherein, the crystal growth furnace 1 includes a furnace body 11, a furnace cover 12 connected to the upper end of the furnace body 11 by bolts, and a lifting chamber 13 provided on the upper surface of the furnace cover 12, a lifting machine 14 is installed on the top surface of the lifting chamber 13, and the telescopic shaft of the lifting machine 14 is connected to a lifting rod 15 that penetrates into the interior of the furnace body 11, and a crystal block 17 is provided at one end of the lifting rod 15 located inside the furnace body 11; an electrode 110 is installed at the bottom of the inner cavity of the furnace body 11, and a graphite heater 111 is installed on the top surface of the electrode 110; a rotating motor 19 is installed on the bottom end surface of the furnace body 11, and the output shaft of the rotating motor 19 is connected to a graphite crucible 112 that penetrates into the interior of the furnace body 11;

[0026] Refer to the instruction manual Figure 2 As shown, a visual sensor 16 is mounted on the top end face of the furnace cover 12. Frames are fixed to the ends of the furnace cover 12 and the furnace body 11 that are adjacent to each other. 30-60 bolts are arranged in a circular array between the frames. An inert gas exhaust pipe 113 is installed through the front end face of the furnace body 11, and an inert gas inlet pipe 18 is installed on the rear end face of the furnace body 11. The side of the connecting block 26 facing away from the furnace body 11 is provided with circular holes for the inert gas inlet pipe 18 and the inert gas exhaust pipe 113 to pass through.

[0027] Refer to the instruction manual Figure 3 As shown, the thermal insulation outer layer 2 comprises two arc-shaped jackets 23, mirror-imaged and arranged on the outer surface of the furnace body 11. The proximal ends of the arc-shaped jackets 23 are connected to a connecting block 26. A vacuum pump 27 is mounted on the outer surface of each connecting block 26. The extraction end of each vacuum pump 27 is connected to a vacuum tube 24 that extends through the interior of the connecting block 26. A main chamber 22 is located within each arc-shaped jacket 23, and a secondary chamber 28 is located within the connecting block 26. A through hole connects the secondary chamber 28 and the main chamber 22. A layer of aerosol felt 21 is adhered to the side of the arc-shaped jacket 23 facing away from the furnace body 11. A bracket 29 is attached to the end of each connecting block 26 facing away from the furnace body 11. The outer shell of the vacuum pump 27 is screwed to the outer surface of the bracket 29. A gas nozzle 25 is mounted on the end of the vacuum tube 24 facing away from the vacuum pump 27. The gas nozzle 25 is embedded in the interior of the connecting block 26. The interior of the aerosol felt adhesive 21 is provided with 10-16 through holes in a circular array.

[0028] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0029] As the graphite heater 111 heats the crystal material within the graphite crucible 112, the rotary motor 19 drives the graphite crucible 112 to rotate at a constant speed, and the end of the lifting rod 15 extends into the graphite crucible 112 to form a crystal nugget 17. While the graphite heater 111 heats the graphite crucible 112, the vacuum pump 27 and vacuum tube 24 extract air from the sub-chamber 28. Since the sub-chamber 28 and the main chamber 22 are interconnected, the arc-shaped jacket 23 and the connecting block 26 form a vacuum layer, thereby isolating the furnace body 11 from the external temperature.

[0030] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for rapid growth of ultra-large crystals, comprising a crystal growth furnace (1), characterized in that: The outer ring surface of the crystal growth furnace (1) is provided with a heat-insulating outer layer (2); wherein, the crystal growth furnace (1) comprises a furnace body (11), a furnace cover (12) connected to the upper end of the furnace body (11) by bolts, and a lifting chamber (13) provided on the upper surface of the furnace cover (12); a lifting machine (14) is installed on the top surface of the lifting chamber (13); a telescopic shaft of the lifting machine (14) is connected to a lifting rod (15) penetrating into the interior of the furnace body (11); a crystal block (17) is provided at one end of the lifting rod (15) located inside the furnace body (11); An electrode (110) is installed at the bottom of the inner cavity of the furnace body (11), a graphite heater (111) is installed on the top surface of the electrode (110), a rotating motor (19) is installed on the bottom end surface of the furnace body (11), and the output shaft of the rotating motor (19) is connected to a graphite crucible (112) that penetrates the interior of the furnace body (11); The heat-insulating outer layer (2) comprises two arc-shaped jackets (23) arranged on the outer surface of the furnace body (11) in a mirror-symmetrical manner on the left and right sides, and the ends of the arc-shaped jackets (23) close to each other are connected to connecting blocks (26), and the outer surfaces of the connecting blocks (26) are installed with vacuum pumps (27), and the extraction ends of the vacuum pumps (27) are connected to vacuum tubes (24) that penetrate into the interior of the connecting blocks (26); wherein, a main chamber (22) is arranged inside the arc-shaped jacket (23), a sub-chamber (28) is arranged inside the connecting blocks (26), and a through hole that penetrates each other is arranged between the sub-chamber (28) and the main chamber (22), and a layer of aerosol felt glue (21) is adhered and fixed to the surface of the side of the arc-shaped jacket (23) away from the furnace body (11) by adhesive.

2. The ultra-large crystal rapid growth device according to claim 1, characterized in that: A visual sensor (16) is installed on the top end surface of the furnace cover (12), and frames are fixed on the end surfaces of the furnace cover (12) and the furnace body (11) that are close to each other, and 30-60 bolts are arranged in a circular array between the frames.

3. The ultra-large crystal rapid growth device according to claim 1, characterized in that: An inert gas exhaust pipe (113) is installed through the front end surface of the furnace body (11), and an inert gas inlet pipe (18) is provided on the rear end surface of the furnace body (11).

4. The ultra-large crystal rapid growth device according to claim 1, characterized in that: A side of the connecting block (26) away from the furnace body (11) is provided with circular holes for the inert gas inlet pipe (18) and the inert gas outlet pipe (113) to pass through.

5. The ultra-large crystal rapid growth device according to claim 1, characterized in that: The end surface of the connecting block (26) away from the furnace body (11) is connected to a bracket (29), and the outer shell surface of the vacuum pump (27) is connected to the outer surface of the bracket (29) through screws.

6. The ultra-large crystal rapid growth device according to claim 1, characterized in that: An air nozzle (25) is installed at one end of the vacuum tube (24) away from the vacuum pump (27), and the air nozzle (25) is embedded in the interior of the connecting block (26).

7. The ultra-large crystal rapid growth device according to claim 1, characterized in that: The interior of the aerosol felt glue (21) is provided with 10-16 through holes in a circular array.

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