Crystal raw material heater

Abstract

The utility model discloses a crystal raw material heater, and belongs to the technical field of crystal raw material heating devices. A crystal raw material heater comprises a crucible body, a crucible cavity for hot melting of raw materials is arranged in the crucible body, and the crystal raw material heater further comprises an inner cavity arranged in the crucible body; the heating wire is arranged in the inner cavity; the heat insulation inner ring is connected into the inner cavity; the heat insulation inner ring is sleeved with the heat insulation outer ring, the heat insulation outer ring and the heat insulation inner ring are each provided with an air opening for ventilation, and the air openings in the heat insulation inner ring and the heat insulation outer ring are arranged at equal intervals; through the arrangement of the heat insulation inner ring and the heat insulation outer ring, the rate of heat conducted to the crucible cavity can be adjusted, then the heating rate of the crucible cavity is adjusted, different temperature fields are formed, the different temperature fields are adjusted according to different crystal raw materials, and growth of crystals is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crystal raw material heating devices, in particular to a heater for crystal raw materials. Background Art

[0002] Artificial crystal materials have excellent physical and chemical properties because they can realize the conversion and interaction between different forms of energy such as electricity, light, sound, heat, magnetism, and force. They are widely used in the fields of communications, medical treatment, aerospace, security monitoring, and radionuclide detection. There are many methods for preparing artificial crystals: pulling method, descent method, vapor deposition, etc. Among them, the crystal growth of the pulling method and descent method must heat and melt the raw materials and then crystallize them under the appropriate temperature field; vapor deposition requires that the raw materials are heated to the sublimation point and then condensed under the action of the appropriate temperature field and airflow field.

[0003] Different crystals require different temperature fields. Generally, a large temperature gradient is conducive to crystal growth and can increase the crystal growth rate, but it will produce large stress in the crystal, which will cause the crystal to crack. In addition, the temperature field also affects the shape of the solid-liquid interface of crystal growth. Under normal conditions, it is hoped to obtain a flat interface (or slightly convex) to improve crystal quality and suppress crystal defects. In short, according to different crystal types, different temperature fields need to be designed and constructed to meet the needs of growing high-quality crystals. At present, the temperature field of common crystal growth equipment is limited by the equipment structure, and the temperature field is difficult to adjust, which seriously limits the growth of different crystals.

[0004] Therefore, the crystal growth field is in urgent need of new heaters to meet the demand for crystal growth equipment with adjustable temperature field.

[0005] Therefore, a heater for a crystal material is provided to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to solve the problems raised in the above background technology and provides a heater for crystal raw materials.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A heater for crystal raw materials, comprising a crucible body, wherein a crucible cavity for hot-melting raw materials is arranged in the crucible body, and further comprising:

[0009] An inner cavity is disposed in the crucible body;

[0010] A heating wire is arranged in the inner cavity;

[0011] a heat-insulating inner ring connected in the inner cavity;

[0012] The heat-insulating outer ring is sleeved on the heat-insulating inner ring. Both the heat-insulating outer ring and the heat-insulating inner ring are provided with air holes for ventilation, and the air holes on the heat-insulating inner ring and the heat-insulating outer ring are arranged at equal intervals.

[0013] In order to increase stability, preferably, a placement groove is provided at the bottom of the inner cavity, and the placement groove is used to place the heat-insulating inner ring and the heat-insulating outer ring.

[0014] In order to facilitate pouring out the melted crystals, preferably, the crucible body is provided with an external thread, and the external thread is threadedly connected with a jar mouth.

[0015] In order to facilitate pouring, preferably, a liquid guiding groove is provided on the can mouth.

[0016] In order to facilitate the melting of the crystal, preferably, the inner layer of the crucible body close to the crucible cavity is a heat dissipation layer for quickly conducting the heat of the heating wire to the crucible cavity.

[0017] In order to hold the crucible body, preferably, the exterior of the crucible body is a heat insulation layer.

[0018] Compared with the prior art, the utility model provides a heater for crystal raw materials, which has the following beneficial effects:

[0019] The utility model can adjust the rate of heat conduction to the crucible cavity by arranging the heat insulating inner ring and the heat insulating outer ring, thereby adjusting the heating rate of the crucible cavity to form different temperature fields, and adjusting different temperature fields according to different crystal raw materials to facilitate the growth of crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a heater for crystal raw materials proposed in the utility model Figure 1 ;

[0021] Figure 2 A schematic diagram of the structure of a heater for crystal raw materials proposed in the utility model Figure 2 ;

[0022] Figure 3 A schematic diagram of the structure of a heater for crystal raw materials proposed in the utility model Figure 3 ;

[0023] Figure 4 A schematic diagram of the structure of a heater for crystal raw materials proposed in the utility model Figure 4 ;

[0024] Figure 5 A schematic diagram of the structure of a heater for crystal raw materials proposed in the utility model Figure 5 .

[0025] In the figure: 1. crucible body; 101. inner cavity; 102. placement groove; 103. heat dissipation layer; 104. thermal insulation layer; 2. tank mouth; 3. heating wire; 4. thermal insulation outer ring; 5. thermal insulation inner ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Embodiment 1:

[0028] Reference Figure 1-5 A heater for crystal raw materials, including a crucible body 1, in which a crucible cavity for hot-melting raw materials is arranged, and also includes: an inner cavity 101, arranged in the crucible body 1; a heating wire 3, arranged in the inner cavity 101; an insulating inner ring 5, connected to the inner cavity 101; an insulating outer ring 4, sleeved on the insulating inner ring 5, the insulating outer ring 4 and the insulating inner ring 5 are both provided with air holes for ventilation, and the holes on the insulating inner ring 5 and the insulating outer ring 4 are evenly spaced, the crucible body 1 is provided with an external thread, the inner layer of the crucible body 1 close to the crucible cavity is a heat dissipation layer 103, which is used to quickly conduct the heat of the heating wire 3 to the crucible cavity, and the outside of the crucible body 1 is an insulating layer 104.

[0029] The internal structure of this device is as follows Figure 3 , Figure 4 As shown, from outside to inside are the thermal insulation layer 104, the heating wire 3, the thermal insulation outer ring 4, the thermal insulation inner ring 5 and the heat dissipation layer 103, wherein the thermal insulation inner ring 5 and the thermal insulation outer ring 4 are made of materials with certain thermal insulation capabilities, and there is no need to use materials with particularly good thermal insulation capabilities to avoid the inability to conduct heat smoothly, and the positions of the openings on the thermal insulation inner ring 5 and the thermal insulation outer ring 4 are consistent, and a certain interval is maintained between each opening.

[0030] In actual use, if the crystal raw material needs to be heated quickly, then the heat-insulating inner ring 5 and the heat-insulating outer ring 4 are taken out from the inner cavity 101. At this time, the heat generated by the heating wire 3 will directly contact the heat dissipation layer 103, thereby heating and melting the crystal raw material, that is, a temperature field of rapid heating;

[0031] If a slow temperature rise is required, the state of the heat-insulating inner ring 5 and the heat-insulating outer ring 4 is as follows: Figure 3 As shown, the heat will contact the heat dissipation layer 103 through the air opening, so that the heat will not contact the heat dissipation layer 103 so quickly, and a relatively slow temperature rise will be achieved, that is, a relatively slow temperature rise temperature field;

[0032] At the same time, the heat-insulating inner ring 5 and the heat-insulating outer ring 4 are rotated and adjusted to adjust the size of the air flow heat. The minimum state is as follows: Figure 5 As shown, the air port directly passes heat, and can only wait for the heat to heat the heat-insulating inner ring 5 and the heat-insulating outer ring 4, so that the heat is slowly conducted out and the heat dissipation layer 103 is slowly heated, that is, a temperature field with slow heating;

[0033] In this way, different crystal materials can be used with different temperature fields.

[0034] Embodiment 2:

[0035] Reference Figure 1-5 , a heater for crystal raw materials, is basically the same as Example 1, and further: a placement groove 102 is provided at the bottom of the inner cavity 101, the placement groove 102 is used to place the insulation inner ring 5 and the insulation outer ring 4, the external thread is threadedly connected with a tank mouth 2, and a liquid guide groove is provided on the tank mouth 2.

[0036] The arrangement of the placement groove 102 facilitates the improvement of the stability of the heat-insulating inner ring 5 and the heat-insulating outer ring 4, and facilitates the rotation of the heat-insulating inner ring 5 and the heat-insulating outer ring 4 to adjust the appropriate opening size.

[0037] The liquid guide groove facilitates pouring out the melted crystal raw materials.

[0038] The utility model can adjust the rate of heat conduction to the crucible cavity by setting the heat insulating inner ring 5 and the heat insulating outer ring 4, thereby adjusting the heating rate of the crucible cavity to form different temperature fields, and adjusting different temperature fields according to different crystal raw materials to facilitate crystal growth.

[0039] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heater for crystal raw materials, comprising a crucible body (1), wherein a crucible cavity for hot-melting raw materials is arranged in the crucible body (1), characterized in that: Also includes: An inner cavity (101) is arranged inside the crucible body (1); A heating wire (3) is arranged in the inner cavity (101); A heat-insulating inner ring (5) connected inside the inner cavity (101); The heat-insulating outer ring (4) is sleeved on the heat-insulating inner ring (5), and both the heat-insulating outer ring (4) and the heat-insulating inner ring (5) are provided with air holes for ventilation, and the air holes on the heat-insulating inner ring (5) and the heat-insulating outer ring (4) are arranged at equal intervals.

2. A heater for crystal raw materials according to claim 1, characterized in that: A placement groove (102) is provided at the bottom of the inner cavity (101), and the placement groove (102) is used to place the heat-insulating inner ring (5) and the heat-insulating outer ring (4).

3. A heater for crystal raw materials according to claim 1, characterized in that: The crucible body (1) is provided with an external thread, and a tank mouth (2) is threadedly connected to the external thread.

4. A heater for crystal raw materials according to claim 3, characterized in that: The tank mouth (2) is provided with a liquid guiding groove.

5. A heater for crystal raw materials according to claim 1, characterized in that: The inner layer of the crucible body (1) close to the crucible cavity is a heat dissipation layer (103) for quickly conducting the heat of the heating wire (3) to the crucible cavity.

6. A heater for crystal raw materials according to claim 1, characterized in that: The outside of the crucible body (1) is a heat insulation layer (104).

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