Material melting device and single crystal furnace provided with same

Abstract

The utility model discloses a material melting device and a single crystal furnace provided with the device, the material melting device comprises a quartz crucible, a crucible heating body, a first electrode and a second electrode, the crucible heating body comprises an inner heating body and an outer heating body, the upper end of the inner heating body is connected with the upper end of the outer heating body, the inner wall of the inner heating body is attached to the outer wall of the quartz crucible, and the inner wall of the outer heating body is attached to the outer wall of the quartz crucible. And the lower ends of the inner heating body and the outer heating body are respectively connected with the first electrode and the second electrode. The crucible heating body is attached to the outer wall of the quartz crucible, the crucible heating body integrates the functions of supporting the quartz crucible and heating the quartz crucible, heat of raw materials is transferred in a direct contact mode instead of an existing heat radiation mode, the heat utilization rate is improved, energy consumption is reduced, the space of the heater is saved, the diameter of the quartz crucible can be enlarged, and the production efficiency is improved. The capacity of the quartz crucible is increased, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic manufacturing, in particular to a material chemical device and a single crystal furnace provided with the device. Background Art

[0002] The current structure of the single crystal furnace used for pulling single crystals is as follows: Figure 1 As shown, it includes a quartz crucible 01, a carbon-carbon crucible 02, a heater 03 and an insulation tube 04. The carbon-carbon crucible 02 is arranged on the outside of the quartz crucible 01 to support the quartz crucible 01. A heater 03 is arranged on the outside of the carbon-carbon crucible 02. An insulation tube 04 is arranged on the outside of the heater 03. A crucible lifting structure 05 is connected to the lower side of the carbon-carbon crucible 02. An electrode 06 is connected to the lower side of the heater 03. In the single crystal furnace melting and crystal pulling process, the raw material 07 in the quartz crucible absorbs the heat emitted by the heater through thermal radiation to perform melting and crystal pulling operations, and the heat utilization rate is low. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned technical problems and provide a material chemical device and a single crystal furnace equipped with the device, wherein the crucible heating element is fitted with the outer wall of the quartz crucible, and the crucible heating element integrates the functions of supporting the quartz crucible and heating the quartz crucible. The heat of the raw material is changed from the existing thermal radiation to direct contact transfer, the heat utilization rate is improved, energy consumption is saved, and the space of the heater is saved. The diameter of the quartz crucible can be enlarged, the capacity of the quartz crucible is increased, and the production efficiency is improved.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] The utility model provides a material chemical device, comprising a quartz crucible, a crucible heating element, a first electrode and a second electrode, wherein the crucible heating element comprises an inner heating element and an outer heating element, the upper ends of the inner heating element and the outer heating element are connected, the inner wall of the inner heating element is fitted with the outer wall of the quartz crucible, and the lower ends of the inner heating element and the outer heating element are respectively connected to the first electrode and the second electrode.

[0006] Optionally, the inner heating element, the outer heating element and the quartz crucible all include a straight cylinder and a cylinder bottom, the lower end of the straight cylinder is connected to the upper end of the cylinder bottom, and the inner heating element and the outer heating element are respectively provided with a first through hole and a second through hole in the middle of the cylinder bottom, and the first through hole and the second through hole are respectively connected to the first electrode and the second electrode.

[0007] Optionally, a first insulator is provided between the straight cylinder and the cylinder bottom of the inner heating element and the outer heating element, respectively.

[0008] Optionally, the connection between the straight tube and the tube bottom is an arc-shaped transition.

[0009] Optionally, the aperture of the first through hole is smaller than the aperture of the second through hole.

[0010] Optionally, the first electrode is in a straight cylindrical shape, and the upper end of the first electrode is connected to the hole wall of the first through hole.

[0011] Optionally, the second electrode includes a straight-cylindrical support column, which is disposed outside the first electrode, and the upper end of the support column is connected to the hole wall of the second through hole.

[0012] Optionally, the second electrode further includes a support tray, which is disposed on the support column, and the upper surface of the support tray is connected to the lower surface of the bottom of the cylinder of the external heating element.

[0013] Optionally, a second insulator is provided between the support column and the first electrode.

[0014] The utility model discloses a single crystal furnace, which comprises the material-forming device as mentioned above.

[0015] In summary, the utility model has at least the following technical effects and advantages:

[0016] The crucible heating element is fitted with the outer wall of the quartz crucible. The crucible heating element integrates the functions of supporting the quartz crucible and heating the quartz crucible. The heat of the raw material is changed from the existing thermal radiation to direct contact transfer, the heat utilization rate is improved, energy consumption is saved, and the space of the heater is saved. The diameter of the quartz crucible can be enlarged, the capacity of the quartz crucible is increased, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of a single crystal furnace in the prior art;

[0019] Figure 2 It is a structural schematic diagram of a material-forming device in one embodiment of the utility model.

[0020] In the figure:

[0021] 01. Quartz crucible; 02. Carbon-carbon crucible; 03. Heater; 04. Insulation tube; 05. Crucible lifting structure; 06. Electrode; 07. Raw materials; 2. Crucible heating element; 21. Internal heating element; 22. External heating element; 3. First electrode; 4. Second electrode; 41. Support column; 42. Support tray; 5. First insulator; 6. Second insulator. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] This embodiment provides a material processing device, such as Figure 2 As shown, it includes a quartz crucible 01, a crucible heating element 2, a first electrode 3 and a second electrode 4, the crucible heating element 2 includes an inner heating element 21 and an outer heating element 22, the upper ends of the inner heating element 21 and the outer heating element 22 are connected, the inner wall of the inner heating element 21 is in contact with the outer wall of the quartz crucible 01, and the lower ends of the inner heating element 21 and the outer heating element 22 are respectively connected to the first electrode 3 and the second electrode 4.

[0027] The crucible heating element 2 of this embodiment is fitted with the outer wall of the quartz crucible 01. The crucible heating element 2 integrates the functions of supporting the quartz crucible 01 and heating the quartz crucible 01. The heat of the raw material 07 is changed from the existing heat radiation to direct contact transfer, the heat utilization rate is improved, the energy consumption is saved, and the space of the heater is saved. The diameter of the quartz crucible can be enlarged, the capacity of the quartz crucible is increased, and the production efficiency is improved.

[0028] Optionally, the inner heating element 21, the outer heating element 22 and the quartz crucible 01 all include a straight tube and a tube bottom, the lower end of the straight tube is connected to the upper end of the tube bottom, and the inner heating element 21 and the outer heating element 22 are provided with a first through hole and a second through hole in the middle of the tube bottom, respectively, and the first through hole and the second through hole are respectively connected to the first electrode 3 and the second electrode 4. The first electrode 3 and the second electrode 4 are respectively connected to a power source, and the first electrode 3 and the second electrode 4 are equivalent to heating the inner heating element 21 and the outer heating element 22 by a wire.

[0029] Optionally, a first insulator 5 is provided between the straight tube and the bottom of the inner heating element 21 and the outer heating element 22. The first insulator 5 acts as an insulator between the inner heating element 21 and the outer heating element 22 to ensure the safety of the overall structure. In this embodiment, the first insulator 5 extends from between the two straight tubes of the inner heating element 21 and the outer heating element 22 to between the two bottoms of the tubes until it is aligned with the hole wall of the first through hole.

[0030] Optionally, the connection between the straight tube and the bottom of the tube is in an arc transition, which is conducive to uniform heating of the quartz crucible 01. Optionally, the thickness of the inner heating element 21 and the outer heating element 22 is uniform at all places, which is conducive to uniform heating of the quartz crucible 01.

[0031] Optionally, the aperture of the first through hole is smaller than that of the second through hole, which facilitates the connection between the first through hole and the first electrode 3 , and the connection between the second through hole and the second electrode 4 .

[0032] Optionally, the first electrode 3 is in a straight tube shape, and the upper end of the first electrode 3 is connected to the hole wall of the first through hole. The straight tube-shaped first electrode 3 serves as a conductor and also plays a supporting role.

[0033] Optionally, the second electrode 4 includes a straight-tube support column 41, which is disposed outside the first electrode 3 and has an upper end connected to the hole wall of the second through hole. The straight-tube support column 41 serves as a conductor and also as a support.

[0034] Optionally, the second electrode 4 further includes a support tray 42, the support tray 42 is arranged on the support column 41, and the upper surface of the support tray 42 is connected to the lower surface of the bottom of the outer heating element 22. The support tray 42 can enhance the support effect on the crucible heating element 2 and the quartz crucible 01 while serving as a conductor.

[0035] Optionally, a second insulator 6 is disposed between the support column 41 and the first electrode 3. In this embodiment, the upper end of the second insulator 6 is in contact with the first insulator 5, and the lower end extends downward.

[0036] The first electrode 3 and the second electrode 4 of this embodiment not only play a conductive role, but also are equivalent to the crucible lifting structure in the existing single crystal furnace. The present application does not limit the specific materials of the crucible heating element 2, the first electrode 3 and the second electrode 4. For example, the crucible heating element 2, the first electrode 3 and the second electrode 4 can all be graphite, carbon or other materials. The lower ends of the first electrode 3 and the second electrode 4 are connected to the power supply of the power platform, and the power platform is connected to the existing lifting drive below the single crystal furnace. The power supply is energized through the first electrode 3 and the second electrode 4 to heat the crucible heating element 2. The quartz crucible 01 is in direct contact with the crucible heating element 2 to transfer heat and heat the raw materials in the quartz crucible 01. The lifting drive can drive the first electrode 3 and the second electrode 4 to rise and fall, and the crucible heating element 2 and the quartz crucible 01 rise and fall accordingly.

[0037] This embodiment also provides a single crystal furnace, including the material mixing device as described above.

[0038] Finally, it should be noted that the above are only preferred embodiments of the present invention and are 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 or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material processing device, characterized in that: It includes a quartz crucible, a crucible heating element, a first electrode and a second electrode. The crucible heating element includes an inner heating element and an outer heating element. The upper ends of the inner heating element and the outer heating element are connected, the inner wall of the inner heating element is in contact with the outer wall of the quartz crucible, and the lower ends of the inner heating element and the outer heating element are respectively connected to the first electrode and the second electrode.

2. The material-forming device according to claim 1, characterized in that: The inner heating element, the outer heating element and the quartz crucible all include a straight tube and a tube bottom, the lower end of the straight tube is connected to the upper end of the tube bottom, and the middle of the tube bottom of the inner heating element and the outer heating element are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively connected to the first electrode and the second electrode.

3. The material-forming device according to claim 2, characterized in that: A first insulator is respectively arranged between the straight cylinder and the cylinder bottom of the inner heating element and the outer heating element.

4. The material-forming device according to claim 2, characterized in that: The connection between the straight tube and the tube bottom is in an arc-shaped transition.

5. The material-forming device according to any one of claims 2 to 4, characterized in that: The aperture of the first through hole is smaller than the aperture of the second through hole.

6. The material-forming device according to any one of claims 2 to 4, characterized in that: The first electrode is in a straight tube shape, and the upper end of the first electrode is connected to the hole wall of the first through hole.

7. The material-forming device according to claim 6, characterized in that: The second electrode includes a straight-cylindrical support column, which is arranged outside the first electrode, and the upper end of the support column is connected to the hole wall of the second through hole.

8. The material-forming device according to claim 7, characterized in that: The second electrode further comprises a support tray, which is arranged on the support column, and the upper surface of the support tray is connected to the lower surface of the bottom of the cylinder of the external heating element.

9. The material-forming device according to claim 7 or 8, characterized in that: A second insulator is provided between the support column and the first electrode.

10. A single crystal furnace, characterized in that: It comprises a material chemical device as described in any one of claims 1 to 9.

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