Crystal furnace observation window convenient to clean and control method thereof

Abstract

The invention discloses a crystal furnace observation window convenient to clean and a control method thereof. The crystal furnace observation window comprises a cover frame, outer glass, a middle frame, inner glass and a main frame which are sequentially stacked in a sealed mode. Cooling liquid is accommodated between the inner glass and the outer glass; the crystal furnace observation window further comprises a first magnetic wiping block located outside the outer glass; the second magnetic wiping block is positioned between the inner glass and the outer glass; the third magnetic wiping block is movably arranged in the main frame; a magnetic attraction force exists between the first magnetic wiping block and the second magnetic wiping block; a magnetic attraction force exists between the second magnetic wiping block and the third magnetic wiping block; when the first magnetic wiping block moves on the outer side of the outer glass, the second magnetic wiping block and the third magnetic wiping block are driven to move. The first magnetic wiping block is located in the area outside the outer glass, the second magnetic wiping block is located in the area between the inner glass and the outer glass, and the third magnetic wiping block is located in the inner glass. And the three magnetic wiping blocks are used for wiping sediments on the surfaces of the two pieces of glass.

Description

Technical Field

[0001] The invention relates to the technical field of observation windows, and in particular to a crystal furnace observation window which is easy to clean and a control method thereof. Background Art

[0002] Crystals such as gallium oxide single crystals are usually grown in a crystal growth furnace. During the crystal growth process, the raw materials are heated and melted. It is usually necessary to observe the specific growth process of the crystal, such as the melting state, the seeding process, etc. An observation window is set on the crystal growth furnace to facilitate the staff to observe the crystal growth process.

[0003] In the prior art, volatiles are generated during the crystal growth process, and these volatiles are easily deposited on the crystal furnace observation window, making the crystal furnace observation window blurry and inconvenient to observe and use.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a crystal furnace observation window that is easy to clean and a control method thereof in view of the above-mentioned defects of the prior art, aiming to solve the problem in the prior art that the crystal furnace observation window is easily blurred and inconvenient to observe and use.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0007] A crystal furnace observation window that is easy to clean, comprising: a cover frame, an outer glass, a middle frame, an inner glass and a main frame that are sealed and stacked in sequence; a coolant is contained between the inner glass and the outer glass; wherein the crystal furnace observation window further comprises:

[0008] A first magnetic wiper, located outside the outer glass;

[0009] A second magnetic wiper is located between the inner glass and the outer glass;

[0010] A third magnetic wiper, movably disposed in the main frame;

[0011] Wherein, there exists a magnetic attraction between the first magnetic wiper and the second magnetic wiper;

[0012] There is a magnetic attraction between the second magnetic wiper and the third magnetic wiper;

[0013] When the first magnetic wiper moves outside the outer glass, the second magnetic wiper and the third magnetic wiper are driven to move.

[0014] The crystal furnace observation window that is easy to clean, wherein the first magnetic wiper comprises:

[0015] An electromagnet with adjustable magnetic attraction;

[0016] A first cleaning layer is disposed on a side of the electromagnet facing the outer glass;

[0017] Wherein, the magnetic attraction force of the electromagnet has a maximum magnetic attraction force and a minimum magnetic attraction force;

[0018] When the magnetic attraction force of the electromagnet is at the maximum, the electromagnet attracts the second magnetic wiper to stick to the outer glass;

[0019] When the magnetic attraction of the electromagnet is the minimum magnetic attraction, the third magnetic wiper attracts the second magnetic wiper to stick to the inner glass.

[0020] The crystal furnace observation window that is easy to clean, wherein the second magnetic wiper comprises:

[0021] a second permanent magnet;

[0022] The second cleaning layer is wrapped around the second permanent magnet.

[0023] The crystal furnace observation window that is easy to clean, wherein a slide groove is provided on the main frame;

[0024] The third magnetic wiper comprises:

[0025] A slider, slidably disposed in the slide groove;

[0026] A third permanent magnet is disposed on the slider;

[0027] The third cleaning layer is arranged on the side of the third permanent magnet facing the inner glass.

[0028] The crystal furnace observation window that is easy to clean, wherein the crystal furnace observation window further comprises:

[0029] A moving device, mounted on the main frame and connected to the first magnetic wiper;

[0030] Wherein, the moving device is used to move the first magnetic wiper.

[0031] The crystal furnace observation window that is easy to clean, wherein the crystal furnace observation window further comprises:

[0032] An imager, disposed on the mobile device;

[0033] A controller, electrically connected to the imager and the mobile device respectively;

[0034] Wherein, the imager is used to collect images of the inner glass and the outer glass.

[0035] The crystal furnace observation window that is easy to clean, wherein the moving device comprises:

[0036] An assembly component assembled with the main frame;

[0037] A drive assembly, disposed on the assembly assembly;

[0038] A lead screw connected to the drive assembly;

[0039] A slide rail, arranged on the assembly component;

[0040] A sliding member, slidably disposed on the slide rail;

[0041] Wherein, the sliding member is connected to the lead screw;

[0042] The first magnetic wiper is arranged on the sliding member.

[0043] The crystal furnace observation window that is easy to clean, wherein there are two lead screws, two slide rails, and the slide member is connected to the two lead screws respectively;

[0044] The assembly components include:

[0045] frame;

[0046] two guide rails, disposed on the back side of the frame;

[0047] A slide plate, slidably arranged on two guide rails;

[0048] an elastic member, located between the slide plate and the frame;

[0049] Wherein, the lead screw and the slide rail are both arranged on the front side of the frame.

[0050] A method for controlling a crystal furnace observation window that is easy to clean as described above, comprising the steps of:

[0051] The moving device is controlled to move the first magnetic wiper to drive the second magnetic wiper and the third magnetic wiper to move.

[0052] The control method for the crystal furnace observation window that is easy to clean, wherein when the haze of the inner glass or the outer glass is lower than a preset value, the moving device is controlled to move the first magnetic wiper to drive the second magnetic wiper and the third magnetic wiper to move, comprising:

[0053] The magnetic attraction force of the electromagnet is configured to be greater than the first preset magnetic attraction force, so that after the second magnetic wiper is attached to the outer glass, the moving device is controlled to move the first magnetic wiper;

[0054] Controlling the imager to collect an image of the inner glass or the outer glass, and determining the haze of the inner glass or the outer glass according to the image;

[0055] When the haze is lower than a preset value, the magnetic attraction force of the electromagnet is configured to be smaller than a second preset magnetic attraction force, so that after the second magnetic wiper is attached to the inner glass, the moving device is controlled to move the first magnetic wiper; wherein the second preset magnetic attraction force is smaller than the first preset magnetic attraction force.

[0056] Beneficial effect: The first magnetic wiper, the second magnetic wiper and the third magnetic wiper are respectively located in three areas, the first magnetic wiper is located in the area outside the outer glass, the second magnetic wiper is located in the area between the inner glass and the outer glass, and the third magnetic wiper is located inside the inner glass. The three magnetic wipers are used to wipe off the deposits on the surfaces of the two glasses so that the crystal furnace observation window can be used for observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic diagram of the structure of the crystal furnace in an embodiment of the present invention.

[0058] Figure 2 Schematic diagram of the structure of the crystal furnace observation window in the embodiment of the present invention.

[0059] Figure 3 It is a longitudinal sectional view of the crystal furnace observation window in an embodiment of the present invention.

[0060] Figure 4 It is a transverse cross-sectional view of the crystal furnace observation window in an embodiment of the present invention.

[0061] Figure 5 4 is a side view of the crystal furnace observation window in the embodiment of the present invention.

[0062] Figure 6 It is a schematic diagram of the structure of the moving device and the magnetic wiper in an embodiment of the present invention.

[0063] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0064] Description of reference numerals:

[0065] 11. Cover frame; 12. Outer glass; 13. Middle frame; 14. Inner glass; 15. Main frame; 151. Slide groove; 21. First magnetic wiper; 22. Second magnetic wiper; 23. Third magnetic wiper; 24. Slide rod; 25. Slider; 30. Moving device; 31. Assembly component; 311. Frame; 312. Guide rail; 313. Slide plate; 314. Elastic member; 32. Driving component; 33. Lead screw; 34. Slide rail; 35. Sliding member; 351. Connecting plate; 352. Bracket; 353. Waist-shaped hole; 40. Imager. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0067] Please also see Figure 1-Figure 7 The present invention provides some embodiments of a crystal furnace observation window that is easy to clean.

[0068] like Figure 1-Figure 3 As shown, the crystal furnace observation window easy to clean of the present invention comprises: a cover frame 11, an outer glass 12, a middle frame 13, an inner glass 14, a main frame 15, a first magnetic wiper 21, a second magnetic wiper 22 and a third magnetic wiper 23. The cover frame 11, the outer glass 12, the middle frame 13, the inner glass 14 and the main frame 15 are sealed and stacked in sequence; the space between the inner glass 14 and the outer glass 12 is used to contain cooling liquid; the first magnetic wiper 21 is located outside the outer glass 12; the second magnetic wiper 22 is located between the inner glass 14 and the outer glass 12; the third magnetic wiper 23 is movably arranged in the main frame 15; there is a magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22; there is a magnetic attraction between the second magnetic wiper 22 and the third magnetic wiper 23; when the first magnetic wiper 21 moves outside the outer glass 12, it drives the second magnetic wiper 22 and the third magnetic wiper 23 to move.

[0069] Specifically, the outer glass 12 and the inner glass 14 divide the entire crystal furnace into three areas, the area inside the inner glass 14, the area between the inner glass 14 and the outer glass 12, and the area outside the outer glass 12. The area inside the inner glass 14 is the inside of the crystal furnace. When the crystal furnace is working, the temperature inside the crystal furnace is relatively high. The area between the inner glass 14 and the outer glass 12 is the area where the coolant flows. The coolant is cooled to ensure that the sealing between the main frame 15, the middle frame 13 and the cover frame 11 is relatively high. The area outside the outer glass 12 is the external space of the crystal furnace. When the crystal furnace grows crystals, some volatiles will be generated, and these volatiles may be deposited on the inner surface of the inner glass 14. Impurities in the coolant may also be deposited on the outer surface of the inner glass 14 and the inner surface of the outer glass 12. Dust in the external space of the crystal furnace may also be deposited on the outer surface of the outer glass 12. Ultimately, these deposits cause the inner glass 14 and the outer glass 12 to become more blurred, and the haze increases.

[0070] The first magnetic wiper 21, the second magnetic wiper 22 and the third magnetic wiper 23 are respectively located in three areas, the first magnetic wiper 21 is located in the area outside the outer glass 12, the second magnetic wiper 22 is located in the area between the inner glass 14 and the outer glass 12, and the third magnetic wiper 23 is located in the inner glass 14. The three magnetic wipers are used to wipe the deposits on the surfaces of the two glasses so that the crystal furnace observation window can be used for observation.

[0071] The magnetic wipers are magnetic, and there is a magnetic attraction between the two magnetic wipers, so the two magnetic wipers attract each other. When the first magnetic wiper 21 moves, the second magnetic wiper 22 and the third magnetic wiper 23 move accordingly, so that the first magnetic wiper 21, the second magnetic wiper 22 and the third magnetic wiper 23 respectively wipe away the deposits on the outer glass 12 and the inner glass 14.

[0072] In a preferred implementation of the embodiment of the present invention, a water inlet and a water outlet are provided on the middle frame 13 , which are respectively provided at the bottom and the top of the middle frame 13 .

[0073] Specifically, there are at least two water inlets, two of which are located at the two ends of the bottom of the middle frame 13 respectively. The gap between the two ends of the magnetic wiper and the middle frame 13 is large. Even if the second magnetic wiper 22 is docked at the bottom of the middle frame 13, it does not affect the water inlet.

[0074] In a preferred implementation of the embodiment of the present invention, the magnetic wiper includes a magnet and a cleaning layer, the cleaning layer contacts the surface of the glass and realizes the erasing of the surface deposits of the glass. The cleaning layer is usually a flexible layer and will not damage the glass. The second magnetic wiper 22 has a cleaning layer on both sides, which can contact the surface of the inner glass 14 and the surface of the outer glass 12 respectively, and erase the surfaces of the inner glass 14 and the outer glass 12 respectively. In order to facilitate the second magnetic wiper 22 to move between the inner glass 14 and the outer glass 12, the thickness of the second magnetic wiper 22 is relatively small. When the second magnetic wiper 22 is pressed against the surface of the outer glass 12 by the magnetic attraction, it will inevitably move away from the surface of the inner glass 14, and the cleaning layer facing the surface of the inner glass 14 is not in full contact with the surface of the inner glass 14; when the second magnetic wiper 22 is pressed against the surface of the inner glass 14 by the magnetic attraction, it will inevitably move away from the surface of the outer glass 12, and the cleaning layer facing the surface of the outer glass 12 is not in full contact with the surface of the outer glass 12. This results in inconsistent erasing effects on the inner glass 14 and the outer glass 12. After a long time, the glass may still be blurred to a certain extent. Therefore, the second magnetic wiper 22 is respectively attached to the inner glass 14 and the outer glass 12 to erase the deposits, which can further improve the erasing effect. The magnetic wiper can also include a box body, the magnet is located outside the box body, and the cleaning layer is located outside the box body.

[0075] By changing the magnitude of the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22, the position where the second magnetic wiper 22 is attached can be adjusted. When the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22 is large, the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22 overcomes the magnetic attraction between the second magnetic wiper 22 and the third magnetic wiper 23, so that the second magnetic wiper 22 is attached to the outer glass 12, and the inner surface of the outer glass 12 is mainly erased; when the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22 is small, the magnetic attraction between the second magnetic wiper 22 and the third magnetic wiper 23 overcomes the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22, so that the second magnetic wiper 22 is attached to the inner glass 14, and the outer surface of the inner glass 14 is mainly erased. Regardless of whether the second magnetic wiper 22 is against the inner glass 14 or the outer glass 12 , when the first magnetic wiper 21 is moved, the second magnetic wiper 22 and the third magnetic wiper 23 can be driven to move.

[0076] In a preferred implementation of the embodiment of the present invention, the magnet of the first magnetic wiper 21 can be a first permanent magnet, and there can be two first magnetic wipers 21, one of which has a larger magnetic attraction (the magnetic attraction of the first magnetic wiper 21 is larger than the first preset magnetic attraction), and the other of which has a smaller magnetic attraction (the magnetic attraction of the first magnetic wiper 21 is smaller than the second preset magnetic attraction, and the second preset magnetic attraction is smaller than the first preset magnetic attraction). When the first magnetic wiper 21 with a larger magnetic attraction is used, the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22 is larger, so that the second magnetic wiper 22 is attached to the outer glass 12. When the first magnetic wiper 21 with a smaller magnetic attraction is used, the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22 is smaller, so that the second magnetic wiper 22 is attached to the inner glass 14.

[0077] In a preferred implementation of the embodiment of the present invention, the first magnetic wiper 21 includes:

[0078] An electromagnet with adjustable magnetic attraction;

[0079] A first cleaning layer, disposed on a side of the electromagnet facing the outer glass 12;

[0080] Among them, the magnetic attraction force of the electromagnet has a maximum magnetic attraction force and a minimum magnetic attraction force; when the magnetic attraction force of the electromagnet is the maximum magnetic attraction force, the electromagnet attracts the second magnetic wiper 22 to be attached to the outer glass 12; when the magnetic attraction force of the electromagnet is the minimum magnetic attraction force, the third magnetic wiper 23 attracts the second magnetic wiper 22 to be attached to the inner glass 14.

[0081] Specifically, the first magnetic wiper 21 can also adopt an electromagnet with adjustable magnetic attraction, and the change of the abutting position of the second magnetic wiper 22 can be achieved by adjusting the magnitude of the magnetic attraction of the electromagnet. The maximum magnetic attraction is greater than the first preset magnetic attraction, and the minimum magnetic attraction is less than the second preset magnetic attraction. When the magnetic attraction of the electromagnet is between the first preset magnetic attraction and the maximum magnetic attraction, the second magnetic wiper 22 abuts against the outer glass 12; when the magnetic attraction of the electromagnet is between the second preset magnetic attraction and the minimum magnetic attraction, the second magnetic wiper 22 abuts against the inner glass 14. By changing the magnitude of the magnetic attraction of the electromagnet, the degree of closeness of the second magnetic wiper 22 against the inner glass 14 or the outer glass 12 can also be adjusted, thereby further adjusting the erasing effect, especially for sediments with greater adhesion, the magnetic attraction of the electromagnet can be adjusted to change the pressure of each magnetic wiper on the glass, thereby erasing difficult-to-erase sediments.

[0082] In a preferred implementation of the embodiment of the present invention, the second magnetic wiper 22 includes:

[0083] a second permanent magnet;

[0084] The second cleaning layer is wrapped around the second permanent magnet.

[0085] Specifically, the magnet of the second magnetic wiper block 22 may be a permanent magnet, and the second cleaning layer is wrapped around the second permanent magnet.

[0086] In a preferred implementation of the embodiment of the present invention, Figure 4 , Figure 6 as well as Figure 7 As shown, the main frame 15 is provided with a slide slot 151; the third magnetic wiper 23 includes:

[0087] A slider 25 is slidably disposed in the slide groove 151;

[0088] A third permanent magnet is disposed on the slider 25;

[0089] The third cleaning layer is arranged on the side of the third permanent magnet facing the inner glass 14 .

[0090] Specifically, the magnet of the third magnetic wiper 23 can be a third permanent magnet. In order to prevent the third magnetic wiper 23 from falling off, a slide groove 151 is provided on the inner side of the main frame 15, and the slider 25 slides in the slide groove 151, thereby realizing the movement of the third permanent magnet and the third cleaning layer. The width of the slide groove 151 is greater than the width of the slider 25, and the slider 25 can slide toward the inner glass 14 in the slide groove 151, and can also slide along the length direction of the inner glass 14.

[0091] The first magnetic wiper 21 can be hand-held for erasing. When the deposit needs to be erased (especially when the crystal furnace is growing crystals), the first magnetic wiper 21 is held and moved on the surface of the outer glass 12, thereby driving the second magnetic wiper 22 and the third magnetic wiper 23 to move. The first magnetic wiper 21 with different magnetic attraction can be replaced for erasing, so as to fully erase the surfaces of the inner glass 14 and the outer glass 12. After the erasing work is completed, the first magnetic wiper 21 can be placed in other locations, such as a tool box. The second magnetic wiper 22 and the third magnetic wiper 23 are retained in the crystal furnace observation window.

[0092] In a preferred implementation of the embodiment of the present invention, Figure 2-Figure 3 As shown, the crystal furnace observation window also includes:

[0093] A moving device 30, mounted on the main frame 15 and connected to the first magnetic wiper 21;

[0094] The moving device 30 is used to move the first magnetic wiper 21 .

[0095] Specifically, a moving device 30 is configured for the first magnetic wiper 21, and the automatic movement of the first magnetic wiper 21 is realized by the moving device 30. The moving device 30 can be detachably mounted on the main frame 15 or the middle frame 13. When it is necessary to wipe off the deposits, for example, when it is necessary to observe the crystal growth from the observation window at a certain stage of crystal growth, the moving device 30 is mounted on the main frame 15 or the middle frame 13. During the crystal growth process, the deposition of volatiles in the crystal furnace is mainly based on the deposition of volatiles, and there is no need to replace the first permanent magnet with different magnetic attraction or adjust the magnetic attraction of the electromagnet. Before the crystal grows, the first permanent magnet with different magnetic attraction or the magnetic attraction of the electromagnet can be replaced to wipe the surfaces of the inner and outer glasses 12.

[0096] In a preferred implementation of the embodiment of the present invention, Figure 2-Figure 3 As shown, the crystal furnace observation window also includes:

[0097] An imager 40, disposed on the mobile device 30;

[0098] A controller, electrically connected to the imager 40 and the mobile device 30 respectively;

[0099] The imager 40 is used to capture images of the inner glass 14 and the outer glass 12 .

[0100] Specifically, in order to further improve the automation of the erasing work, an imager 40 is provided on the mobile device 30 to collect images of the glass, especially the image of the inner glass 14. The haze of the glass is determined by the image of the glass, so as to move the first magnetic wiper 21 and drive the second magnetic wiper 22 and the third magnetic wiper 23 to perform the erasing work. The controller is used to control the imager 40 to obtain images and control the mobile device 30 to move the first magnetic wiper 21.

[0101] In a preferred implementation of the embodiment of the present invention, Figure 2-Figure 4 As shown, the mobile device 30 includes:

[0102] An assembly component 31, assembled with the main frame 15;

[0103] A driving component 32, disposed on the assembly component 31;

[0104] A lead screw 33 connected to the driving assembly 32;

[0105] A slide rail 34, provided on the assembly component 31;

[0106] A sliding member 35, slidably disposed on the slide rail 34;

[0107] Wherein, the sliding member 35 is connected to the lead screw 33;

[0108] The first magnetic wiper 21 is disposed on the sliding member 35 .

[0109] Specifically, the assembly component 31 is assembled on the main frame 15 or the middle frame 13, the driving component 32 is used to provide driving force for the lead screw 33, the lead screw 33 is used to convert rotation into movement, and the sliding member 35 slides along the slide rail 34. The driving force of the driving component 32 passes through the lead screw 33 and the sliding member 35, driving the first magnetic wiper 21 to move.

[0110] In a preferred implementation of the embodiment of the present invention, Figure 2-Figure 4 As shown, there are two lead screws 33, two slide rails 34, and the sliding member 35 is connected to the two lead screws 33 respectively;

[0111] The assembly component 31 comprises:

[0112] Framework 311;

[0113] Two guide rails 312 are provided on the back side of the frame 311;

[0114] A slide plate 313, slidably disposed on the two guide rails 312;

[0115] An elastic member 314 is located between the slide plate 313 and the frame 311;

[0116] The lead screw 33 and the slide rail 34 are both arranged on the front side of the frame 311 .

[0117] Specifically, in order to facilitate the removal of the assembly component 31 from the main frame 15 or the middle frame 13, an elastic member 314 is used to provide elastic force to push the slide plate 313 to slide, thereby clamping the main frame 15 or the middle frame 13. The guide rail 312 guides the sliding of the slide plate 313. The frame 311 includes: an upper crossbeam, a lower crossbeam, a left vertical beam and a right vertical beam. The two ends of the left vertical beam are respectively connected to the first end of the upper crossbeam and the first end of the lower crossbeam, and the two ends of the right vertical beam are respectively connected to the second end of the upper crossbeam and the second end of the lower crossbeam. Figure 2 As shown, when viewed from the front, the frame 311 forms a rectangle; Figure 5 As shown, when viewed from the side, the frame 311 forms an I-shape. The length and width of the frame 311 are both large, and can be suitable for main frames 15 or middle frames 13 of different sizes. The drive assembly 32 is located at the top of the frame 311, the lead screw 33, the slide rail 34, the slide member 35 and the first magnetic wiper 21 are all located on the front of the frame 311, and the guide rail 312, the slide plate 313 and the elastic member 314 are all located on the back of the frame 311. The imager 40 can be set on the upper crossbeam.

[0118] In a preferred implementation of the embodiment of the present invention, the lead screw 33 includes: a screw and a nut. The screw is rotatably arranged on the frame 311, specifically, the upper beam and the lower beam. The nut is connected to the screw and the sliding member 35. When the screw rotates, the nut and the sliding member 35 move along the length direction of the screw. The lead screw 33 can be a ball screw 33 or a trapezoidal lead screw 33, etc. Since there can be two lead screws 33, the nuts of the two lead screws 33 are respectively connected to the two ends of the sliding member 35.

[0119] In a preferred implementation of the embodiment of the present invention, Figure 3-Figure 4 As shown, the sliding member 35 comprises:

[0120] A connecting plate 351, used for connecting the lead screw 33;

[0121] The bracket 352 is used to install the first magnetic wiper 21 .

[0122] Specifically, the connecting plate 351 is in a square bracket shape (i.e., "]"). Both ends of the connecting plate 351 are provided with mounting holes for mounting the nut of the lead screw 33. Both ends of the first magnetic wiper 21 are provided with slide bars 24. The bracket 352 is provided with a waist-shaped hole 353 or a waist-shaped groove. The slide bar 24 slides in the waist-shaped hole 353 and the waist-shaped groove. The length direction of the waist-shaped hole 353 or the waist-shaped groove faces the outer glass 12. The waist-shaped hole 353 or the waist-shaped groove is conducive to removing or placing the first magnetic wiper 21. As long as one end of the slide bar 24 of the first magnetic wiper 21 is rotated in a horizontal plane and is located outside the waist-shaped hole 353 or the waist-shaped groove, the other end of the first magnetic wiper 21 can be moved out of the waist-shaped hole 353 or the waist-shaped groove to achieve the removal of the first magnetic wiper 21. After the first magnetic wiper 21 is placed, the magnetic attraction between the first magnetic wiper 21 and the second magnetic wiper 22 makes it difficult for the first magnetic wiper 21 to be separated from the waist-shaped hole 353 or the waist-shaped groove. When the waist-shaped hole 353 or the waist-shaped groove is used, the installation position of the assembly component 31 does not need to be so precise. As long as the assembly component 31 is installed on the main frame 15 or the middle frame 13, the slide bar 24 is located in the waist-shaped hole 353 and the waist-shaped groove, the first magnetic wiper 21 can be driven to move by the slide member 35, and there is no need to adjust the specific position of the slide bar 24 in the waist-shaped hole 353 and the waist-shaped groove. This reduces the installation difficulty of the assembly component 31, and the use of the slide plate 313 and the elastic member 314 for clamping is also easier to operate and implement. The length of the first magnetic wiper 21 is different, and the two brackets 352 can adopt different installation spacings to adapt to the outer glass 12 of different widths.

[0123] In a preferred implementation of an embodiment of the present invention, the drive assembly 32 includes a driver and a transmission member. The driver can be a motor, and the transmission member can be a gear transmission member. The gear transmission member transmits the driving force of the driver to the two lead screws 33, specifically driving the two screws to rotate.

[0124] Based on the crystal furnace observation window that is easy to clean described in any of the above embodiments, the present invention also provides a preferred embodiment of a control method for a crystal furnace observation window that is easy to clean:

[0125] The control method of the crystal furnace observation window that is easy to clean according to the embodiment of the present invention comprises the following steps:

[0126] Step S100: Control the moving device to move the first magnetic wiper to drive the second magnetic wiper and the third magnetic wiper to move.

[0127] Specifically, when the inner glass or the outer glass needs to be erased, the moving device is controlled to move the first magnetic wiper to drive the second and third magnetic wipers to move together through the first magnetic wiper, thereby erasing the surface of the inner glass and the surface of the outer glass.

[0128] The glass surface can be wiped before or during crystal growth. During crystal growth, the inner surface of the inner glass is mainly wiped to clean the deposition of volatiles. Before crystal growth, all surfaces of the inner and outer glass can be wiped.

[0129] Step S100 specifically includes:

[0130] S110, configuring the magnetic attraction force of the electromagnet to be greater than the first preset magnetic attraction force, so that after the second magnetic cleaning block is attached to the outer glass, the moving device is controlled to move the first magnetic cleaning block.

[0131] Specifically, after starting the crystal furnace observation window that is easy to clean, the magnetic attraction force of the electromagnet can be configured to be greater than the first preset magnetic attraction force, so that the second magnetic wiper is attached to the outer glass, and a strong magnetic attraction force is formed between the first magnetic wiper and the second magnetic wiper, thereby improving the cleaning effect of the first magnetic wiper and the second magnetic wiper on the outer glass.

[0132] Step S100 also includes:

[0133] Step S120, controlling the imager to collect an image of the inner glass or the outer glass, and determining the haze of the inner glass or the outer glass according to the image;

[0134] Step S130, when the haze is lower than a preset value, the magnetic attraction force of the electromagnet is configured to be smaller than a second preset magnetic attraction force, so that after the second magnetic wiper is attached to the inner glass, the moving device is controlled to move the first magnetic wiper; wherein the second preset magnetic attraction force is smaller than the first preset magnetic attraction force.

[0135] Specifically, the crystal growth time is relatively long, sometimes up to several hours or even dozens of hours. It is convenient to collect images through an imager and automatically erase them through a mobile device. The magnetic attraction of the electromagnet is smaller than the second preset magnetic attraction, which is not only beneficial to power saving, but also beneficial to forming a stronger magnetic attraction between the second magnetic wiper and the third magnetic wiper, thereby improving the cleaning effect of the second magnetic wiper and the third magnetic wiper on the inner glass (especially the volatiles on the inner surface of the inner glass).

[0136] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A crystal furnace observation window that is easy to clean, comprising: Seal the stacked cover frame, outer glass, middle frame, inner glass and main frame in sequence; The inner glass and the outer glass are used to contain cooling liquid; characterized in that the crystal furnace observation window also includes: A first magnetic wiper, located outside the outer glass; A second magnetic wiper is located between the inner glass and the outer glass; A third magnetic wiper, movably disposed in the main frame; Wherein, there exists a magnetic attraction between the first magnetic wiper and the second magnetic wiper; There is a magnetic attraction between the second magnetic wiper and the third magnetic wiper; When the first magnetic wiper moves outside the outer glass, the second magnetic wiper and the third magnetic wiper are driven to move.

2. The crystal furnace observation window that is easy to clean according to claim 1, characterized in that: The first magnetic wiper comprises: An electromagnet with adjustable magnetic attraction; A first cleaning layer is disposed on a side of the electromagnet facing the outer glass; Wherein, the magnetic attraction force of the electromagnet has a maximum magnetic attraction force and a minimum magnetic attraction force; When the magnetic attraction force of the electromagnet is at the maximum, the electromagnet attracts the second magnetic wiper to stick to the outer glass; When the magnetic attraction of the electromagnet is at the minimum magnetic attraction, the third magnetic wiper attracts the second magnetic wiper to stick to the inner glass.

3. The crystal furnace observation window that is easy to clean according to claim 2, characterized in that: The second magnetic wiper comprises: a second permanent magnet; The second cleaning layer is wrapped around the second permanent magnet.

4. The crystal furnace observation window that is easy to clean according to claim 3, characterized in that: The main frame is provided with a slide groove; The third magnetic wiper comprises: A slider, slidably disposed in the slide groove; A third permanent magnet is disposed on the slider; The third cleaning layer is arranged on the side of the third permanent magnet facing the inner glass.

5. The easy-to-clean crystal furnace observation window according to any one of claims 1 to 4, characterized in that: The crystal furnace observation window also includes: A moving device, mounted on the main frame and connected to the first magnetic wiper; Wherein, the moving device is used to move the first magnetic wiper.

6. The crystal furnace observation window that is easy to clean according to claim 5, characterized in that: The crystal furnace observation window also includes: An imager, disposed on the mobile device; A controller, electrically connected to the imager and the mobile device respectively; Wherein, the imager is used to collect images of the inner glass and the outer glass.

7. The easy-to-clean crystal furnace observation window according to claim 5, characterized in that: The mobile device comprises: An assembly component assembled with the main frame; A drive assembly, disposed on the assembly assembly; A lead screw connected to the drive assembly; A slide rail, arranged on the assembly component; A sliding member, slidably disposed on the slide rail; Wherein, the sliding member is connected to the lead screw; The first magnetic wiper is arranged on the sliding member.

8. The crystal furnace observation window that is easy to clean according to claim 7, characterized in that: There are two lead screws, there are two slide rails, and the sliding member is connected to the two lead screws respectively; The assembly components include: frame; two guide rails, disposed on the back side of the frame; A slide plate, slidably arranged on two guide rails; an elastic member, located between the slide plate and the frame; Wherein, the lead screw and the slide rail are both arranged on the front side of the frame.

9. A method for controlling a crystal furnace observation window that is easy to clean according to any one of claims 5 to 8, characterized in that: Includes steps: The moving device is controlled to move the first magnetic wiper to drive the second magnetic wiper and the third magnetic wiper to move.

10. The method for controlling the crystal furnace observation window that is easy to clean according to claim 9, characterized in that: When the haze of the inner glass or the outer glass is lower than a preset value, controlling the moving device to move the first magnetic wiper to drive the second magnetic wiper and the third magnetic wiper to move, comprises: The magnetic attraction force of the electromagnet is configured to be greater than the first preset magnetic attraction force, so that after the second magnetic wiper is attached to the outer glass, the moving device is controlled to move the first magnetic wiper; Controlling the imager to collect an image of the inner glass or the outer glass, and determining the haze of the inner glass or the outer glass according to the image; When the haze is lower than a preset value, the magnetic attraction force of the electromagnet is configured to be smaller than a second preset magnetic attraction force, so that after the second magnetic wiper is attached to the inner glass, the moving device is controlled to move the first magnetic wiper; wherein the second preset magnetic attraction force is smaller than the first preset magnetic attraction force.

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