CN102719892B - Sapphire crystal growth furnace energy saving device - Google Patents

Sapphire crystal growth furnace energy saving device Download PDF

Info

Publication number
CN102719892B
CN102719892B CN201210121828.3A CN201210121828A CN102719892B CN 102719892 B CN102719892 B CN 102719892B CN 201210121828 A CN201210121828 A CN 201210121828A CN 102719892 B CN102719892 B CN 102719892B
Authority
CN
China
Prior art keywords
ring
sapphire
electrode
energy saver
crystal growth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201210121828.3A
Other languages
Chinese (zh)
Other versions
CN102719892A (en
Inventor
虞希高
吴云才
周国清
罗庆波
周林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Huifeng Zhicheng Technology Co.,Ltd.
Original Assignee
Zhejiang Shangcheng Science & Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Shangcheng Science & Technology Co Ltd filed Critical Zhejiang Shangcheng Science & Technology Co Ltd
Priority to CN201210121828.3A priority Critical patent/CN102719892B/en
Publication of CN102719892A publication Critical patent/CN102719892A/en
Application granted granted Critical
Publication of CN102719892B publication Critical patent/CN102719892B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

The invention belongs to the sapphire crystal growth furnace technology field and specifically relates to a sapphire crystal growth furnace energy saving device. The sapphire crystal growth furnace energy saving device comprises an assembled corundum ceramic retaining ring arranged between an electrode protective sleeve and a furnace wall; a cross section of the retaining ring is in the shape of L; the retaining ring comprises an annular retaining edge and a cylindrical base, wherein an external diameter of the annular retaining edge is greater than a furnace wall electrode hole and an internal diameter of the annular retaining edge is greater than an electrode external diameter; and an internal diameter of the cylindrical base is consistent with the electrode protective sleeve. Preferably, the energy saving device further comprises a second retaining ring arranged between the electrode protective sleeve and a graphite casing. According to the invention, by installing the energy saving device on three electrodes of the sapphire crystal growth furnace, not only heat protection is carried out for hearth welding weak positions, but also can energy loss generated by heat radiation be reduced; the internal quality of sapphire crystals is improved; and a material basis for production of sapphire crystals with greater size is improved.

Description

A kind of sapphire crystallization furnace energy saver
Technical field
The invention belongs to sapphire crystallization furnace technical field, be specifically related to a kind of sapphire crystallization furnace energy saver.
Background technology
Sapphire crystal is owing to having high strength, high rigidity, a series of excellent comprehensive physical and chemical performances such as high temperature resistant, abrasion-resistant, chemical stability are good, being the epitaxially grown commercialization substrate material of GaN base LED, accounting for market 95%, is the base mateiral of semiconductor illumination technique and industry.
The fusing point of sapphire crystal is up to 2050 DEG C, grow extremely difficult, the sapphire crystal of more than diameter 200mm mainly contains kyropoulos and heat-exchanging method, heat-exchanging method is the unique method of the sapphire crystal of at present stable growth overall dimension and most high optical quality in the world, it independently can to control in crystal thermograde in thermograde and melt, is conducive to growing high-quality, large-sized sapphire crystal.At present can volume production 100 kilograms of sapphire optical crystal.
The brilliant stove of length that heat-exchanging method uses is exactly load onto the heat exchanger that a tungsten makes in the bottom of vacuum graphite resistance furnace, cooling helium is inside had to flow through, the crucible that raw material is housed is placed on the top of heat exchanger, both overlap at center, and seed crystal is placed in the center of crucible bottom, after the raw material in crucible is by heat fused, now, because helium flow is through heat exchanger cooling, seed crystal is not melted, after helium gas flow strengthens gradually, then from the heat also corresponding increase that melt is taken away, seed crystal is grown up gradually, the melt in whole crucible is finally made all to solidify.
The heat-exchanging method production sapphire crystal cycle is very long, and more than 15 days, required heating power was very high, and its long brilliant feature determines long brilliant stove and be all in the condition of high temperature in for a long time.As shown in Figure 1, long brilliant stove well heater is connected with three electrodes prior art sapphire crystallization furnace structure, and three electrode places exist three holes, can produce heat leakage.
The leakage of this place's heat has following problem:
1) burner hearth can be caused to weld weakness occur leaking even crack, minor amount of water flash evapn in 2000 degree of brilliant stoves of length of leakage becomes gaseous state, causes furnace pressure to rise fast, and long brilliant process is out of control, and may cause work safety accident.
2) leakage of heat is exactly the waste of heat energy, can increase the heating power in sapphire production process, and the more energy consumption of each growth needs, is unfavorable for energy saving standard.
3) leakage of heat can reduce the space in the temperature field in well heater or crucible, and temperature field limits more greatly, the production of higher crystal, also can reduce the internal soundness of the sapphire crystal produced at present.
Summary of the invention
The present invention is according to the deficiencies in the prior art, provide a kind of assembled energy-saving device, be arranged on three electrodes of sapphire crystallization furnace, both can weld weak location to burner hearth and carry out thermal protection, the energy waste that thermal radiation produces can be reduced again, improving the inner quality of sapphire crystal, improving basic substance for producing larger sized sapphire crystal.
Concrete technical scheme of the present invention is:
A kind of sapphire crystallization furnace energy saver; it is characterized in that this energy saver comprises an assembly type corundum ceramic back-up ring be arranged between electrode protection cover and furnace wall; this back-up ring cross section is L-shaped; comprise external diameter and be greater than the annular gear edge that furnace wall electrode hole and internal diameter be greater than electrode external diameter, overlap consistent cylinder base with an internal diameter with electrode protection.Optimally, described energy saver also comprises second back-up ring be located between electric motor protecting cover and graphite casing.
Optimally, described assembly type back-up ring is put together by two semicircles are scarce.
Optimally, the gear of described back-up ring is provided with one for being socketed the circular groove of electrode protective sleeve along surface.
Optimally, described semicircle lacks by buckle structure connected.
Optimally, described gear is curved along bottom.
Cylinder base can be arranged to certain tapering, matches with burner hearth, and this is conducive to annulus and burner hearth close contact.
The heat conduction efficiency of corundum ceramic is lower; protection effectively can be blocked to burner hearth three electrode welding weakness in ceramic ring lateral part; the actual temperature of effective reduction electrode commissure; the stress avoiding weld seam to produce because of thermal radiation causes cracking; simultaneously also can space to a certain extent between enclosed-electrode graphite protective sleeve; prevent heat leak, thus improve the thermo-efficiency of thermal field.
Pottery back-up ring adopts high-quality corundum to fire and forms, purity 95%-99%, and can bear the high temperature of more than 1700 degree and indeformable for a long time, the chemical composition of corundum is identical with sapphire simultaneously, thus avoids in the burner hearth of impurity introducing, affects the quality of crystal.
Because the mounting condition of sapphire crystallization furnace limit, cannot make back-up ring and graphite protective sleeve one-body molded, therefore, this programme is the optimal selection under prior art condition.
Accompanying drawing explanation
Fig. 1 is prior art sapphire crystallization furnace structural representation.
Fig. 2 is the sapphire crystallization furnace structural representation containing the present invention's pottery back-up ring.
Fig. 3 is the present invention's pottery back-up ring plan structure schematic diagram.
Fig. 4 is the present invention's pottery back-up ring sectional structure schematic diagram.
Fig. 5 is the sapphire crystallization furnace structural representation containing the present invention's two ceramic back-up rings.
Fig. 6 is arced ceramic back-up ring sectional structure schematic diagram of the present invention.
Fig. 7 is the present invention's pottery back-up ring male and female split structural representation.
Fig. 8 is the present invention's pottery back-up ring step split structural representation.
Wherein, electrode 1, furnace wall 2, graphite casing 3; well heater 4, electrode protection cover 5, gap 6, back-up ring 7; second back-up ring 8, electrode protection cover 9, circular groove 10, the first semicircle lacks 71; second semicircle lacks 72, projection 710, and base 711, keeps off along 712; plane 713, projection 714, groove 720; groove 724, base 82, cambered surface 81.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in figs 2-4; energy saver comprises an assembly type corundum ceramic back-up ring 7 be arranged between electrode protection cover 9 and furnace wall 2; this back-up ring 7 cross section is L-shaped; comprise external diameter to be greater than furnace wall electrode hole and internal diameter and to be greater than the annular gear of electrode external diameter along 712, overlap consistent cylinder base 711 with an internal diameter and electrode protection.
As shown in Figure 5, this energy saver also can comprise second back-up ring 8 be located between electric motor protecting cover and graphite casing.
As shown in Figure 3, assembly type back-up ring 7 lacks 72 by semicircle scarce 71 and semicircle and is put together, and the gear of back-up ring 7 is provided with one for being socketed the circular groove 10 of electrode protective sleeve 9 along 712 surfaces.
Described semicircle lack 71 and semicircle lack and 72 to be connected by buckle structure, concrete structure can two kinds of heteroid buckles as shown in Figure 7 and Figure 8.
Optimally, described gear can curved 81 along bottom, the burner hearth 2 of circular arc of fitting better and graphite casing 3.

Claims (6)

1. a sapphire crystallization furnace energy saver; it is characterized in that this energy saver comprises an assembly type corundum ceramic back-up ring be arranged between electrode protection cover and furnace wall; this back-up ring cross section is L-shaped; comprise external diameter and be greater than the annular gear edge that furnace wall electrode hole and internal diameter be greater than electrode external diameter, overlap consistent cylinder base with an internal diameter with electrode protection.
2. sapphire crystallization furnace energy saver according to claim 1, is characterized in that described energy saver also comprises second back-up ring be located between electric motor protecting cover and graphite casing.
3. sapphire crystallization furnace energy saver according to claim 1 and 2, is characterized in that described back-up ring is lacked by two semicircles and is put together.
4. sapphire crystallization furnace energy saver according to claim 1 and 2, is characterized in that the gear of described back-up ring is provided with one for being socketed the circular groove of electrode protective sleeve along surface.
5. sapphire crystallization furnace energy saver according to claim 3, be is characterized in that described semicircle lacks and is connected by buckle structure.
6. sapphire crystallization furnace energy saver according to claim 1 and 2, is characterized in that the gear of described back-up ring is curved along bottom.
CN201210121828.3A 2012-04-24 2012-04-24 Sapphire crystal growth furnace energy saving device Active CN102719892B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210121828.3A CN102719892B (en) 2012-04-24 2012-04-24 Sapphire crystal growth furnace energy saving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210121828.3A CN102719892B (en) 2012-04-24 2012-04-24 Sapphire crystal growth furnace energy saving device

Publications (2)

Publication Number Publication Date
CN102719892A CN102719892A (en) 2012-10-10
CN102719892B true CN102719892B (en) 2015-01-28

Family

ID=46945749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210121828.3A Active CN102719892B (en) 2012-04-24 2012-04-24 Sapphire crystal growth furnace energy saving device

Country Status (1)

Country Link
CN (1) CN102719892B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104195641B (en) * 2014-09-04 2017-02-01 南京晶升能源设备有限公司 Riveted tungsten plate heater for sapphire single crystal furnace

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201258367Y (en) * 2008-07-11 2009-06-17 北京有色金属研究总院 Electric pole mechanism for vertical pulling ingle-crystal furnace thermal field
CN101519801A (en) * 2008-02-26 2009-09-02 绿能科技股份有限公司 Long crystal furnace construction configuration
CN201678765U (en) * 2010-05-04 2010-12-22 雅安永旺硅业有限公司 Combined electrode insulation ring
CN202610392U (en) * 2012-04-24 2012-12-19 浙江上城科技有限公司 Energy-saving device of sapphire crystal growing furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101519801A (en) * 2008-02-26 2009-09-02 绿能科技股份有限公司 Long crystal furnace construction configuration
CN201258367Y (en) * 2008-07-11 2009-06-17 北京有色金属研究总院 Electric pole mechanism for vertical pulling ingle-crystal furnace thermal field
CN201678765U (en) * 2010-05-04 2010-12-22 雅安永旺硅业有限公司 Combined electrode insulation ring
CN202610392U (en) * 2012-04-24 2012-12-19 浙江上城科技有限公司 Energy-saving device of sapphire crystal growing furnace

Also Published As

Publication number Publication date
CN102719892A (en) 2012-10-10

Similar Documents

Publication Publication Date Title
CN102352530B (en) Heat shield device for CZ-Si single crystal furnace
CN103741206B (en) A kind of polycrystalline silicon ingot casting melt and impurities removal technique
CN102162125B (en) Thermal field structure of polysilicon ingot casting furnace
CN204570091U (en) There is the single crystal growing furnace mending warm guide shell
CN101311656B (en) Quick-opening type water-cooling structure polycrystalline silicon reducing furnace
CN103741213B (en) A kind of polycrystalline silicon ingot casting melt technique
CN104451892A (en) Multistage graphite heating system of sapphire crystal growth equipment and using method of multistage graphite heating system
CN102628184A (en) Method for growing gem crystals by way of vacuum induction heating and device realizing method
CN103614765A (en) Method of heating graphite to grow sapphire crystal
CN102719892B (en) Sapphire crystal growth furnace energy saving device
CN202610392U (en) Energy-saving device of sapphire crystal growing furnace
CN204151459U (en) A kind of insulation ingot furnace
CN102677169B (en) Heat preservation device of sapphire crystal growth furnace
CN203923449U (en) A kind of low-energy consumption single-crystal stove
CN203382848U (en) High-efficient polycrystalline silicon ingot casting furnace with heat insulation protective plate
CN103397383B (en) A kind of energy-conservation sapphire crystal furnace and using method thereof
CN105586634B (en) Heater and application method for direct-pulling single crystal furnace thermal field
CN208395315U (en) A kind of heat-exchanging method sapphire crystal growth heater
CN204251760U (en) Thermal field of czochralski silicon
CN101724889A (en) System for thermal field of straight pulling silicon single crystal furnace
CN215628416U (en) Bottom heater and single crystal furnace
CN208618005U (en) A kind of solar energy single crystal thermal field heat-proof device
CN206494983U (en) A kind of coaxial electrode for guided mode stove
CN208604238U (en) A kind of monocrystalline silica crucible
CN202610393U (en) Heat preserving device for sapphire crystal growth furnace

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 314400 Haining Economic Development Zone, Zhejiang City, Jiaxing Province, Kim Jin Road, No. 11, No.

Patentee after: Zhejiang Huifeng Alwayseal Technology Ltd

Address before: 314400 Haining City, Zhejiang Province Economic Development Zone in the city of gold on the road No. 11, No.

Patentee before: Zhejiang Shangcheng Science & Technology Co., Ltd.

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 314400 Jinchang Road, Haining Economic Development Zone, Haining, Jiaxing, Zhejiang, 11

Patentee after: Zhejiang Huifeng Zhicheng Technology Co.,Ltd.

Address before: 314400 Jinchang Road, Haining Economic Development Zone, Haining, Jiaxing, Zhejiang, 11

Patentee before: ZHEJIANG HUIFENG PLASTIC TECHNOLOGY CO.,LTD.