CN210134184U - Polycrystal ingot casting cooling device - Google Patents
Polycrystal ingot casting cooling device Download PDFInfo
- Publication number
- CN210134184U CN210134184U CN201921127299.1U CN201921127299U CN210134184U CN 210134184 U CN210134184 U CN 210134184U CN 201921127299 U CN201921127299 U CN 201921127299U CN 210134184 U CN210134184 U CN 210134184U
- Authority
- CN
- China
- Prior art keywords
- cooling device
- cooling
- inlet
- device body
- flow
- 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
Links
Images
Landscapes
- Silicon Compounds (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The utility model discloses a polycrystal ingot casting cooling device, which comprises a cooling device body and a driving mechanism used for driving the cooling device body to move up and down along the vertical direction; the first surface of the cooling device body is provided with a reflection coating for reflecting heat radiation from the heater, and the second surface of the cooling device body is provided with a cooling air passage for cooling air to flow through. The polycrystal ingot casting cooling device improves the heat dissipation of silicon materials, is convenient for accurately controlling proper temperature gradient, provides enough driving force for crystal growth, and improves the crystal growth forming efficiency of silicon ingots.
Description
Technical Field
The utility model relates to a solar photovoltaic field, in particular to polycrystal ingot casting cooling device.
Background
The cooling device of the polycrystalline ingot furnace is a device used for cooling and providing a temperature gradient in the oriented growth of crystals.
In a polycrystal ingot, the growth of crystals is controlled by controlling a certain temperature gradient, the realization of the temperature gradient mainly depends on the lifting of a heat insulation cage or the heat transfer of a DS platform at the bottom, but the heat dissipation mode is often not accurate enough, the cooling speed is slow, the power for providing the crystal growth is not enough, and the crystal growth time is too long.
Therefore, how to solve the problem of heat dissipation of the silicon material, precisely control the appropriate temperature gradient, and provide sufficient driving force for crystal growth becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a polycrystal ingot casting cooling device, above-mentioned polycrystal ingot casting cooling device have improved the heat dissipation of silicon material, and the suitable temperature gradient of the accurate control of being convenient for provides sufficient drive power for crystal growth, has improved the long brilliant shaping efficiency of silicon bulk.
In order to achieve the purpose, the utility model provides a polycrystal ingot casting cooling device, which comprises a cooling device body and a driving mechanism used for driving the cooling device body to move up and down along the vertical direction;
the first surface of the cooling device body is provided with a reflection coating for reflecting heat radiation from the heater, and the second surface of the cooling device body is provided with a cooling air passage for cooling air to flow through.
Optionally, the cooling air duct includes a plurality of horizontal pipes that are parallel to each other and horizontally disposed, and further includes: the inlet header pipe is arranged at the inlet end of the horizontal pipeline and is vertically communicated with the plurality of horizontal pipelines, and the outlet header pipe is arranged at the outlet end of the horizontal pipeline and is vertically communicated with the plurality of horizontal pipelines.
Optionally, the cooling air flue is a serpentine pipe, the main body of the serpentine pipe is horizontally arranged, the inlet end of the serpentine pipe is arranged on one side of the bottom of the cooling device body, and the outlet end of the serpentine pipe is arranged on one side of the top of the cooling device body.
Optionally, the cooling air system further comprises a flow detection device arranged at an inlet of the cooling air passage and used for detecting the flow of the cooling air.
Optionally, the cooling air path system further comprises an inlet control valve connected in series with the flow detection device and used for adjusting the opening degree of the inlet of the cooling air path.
Optionally, the inlet control valve is an electric valve, and further includes a control device connected to the flow detection device and the inlet control valve, for adjusting an opening of the inlet control valve to control the flow of the inlet air to a preset value when the flow detection device detects that the flow of the inlet air deviates from the preset value.
Compared with the prior art, the polycrystal ingot casting cooling device provided by the utility model comprises a cooling device body and a driving mechanism for driving the cooling device body to move in the vertical direction, and the polycrystal ingot casting cooling device can be arranged at the bottom of the DS platform; the DS platform is a graphite platform which is arranged at the bottom of the polycrystalline ingot furnace and used for supporting a crucible and performing heat exchange. The cooling device body comprises a reflective coating arranged on the first surface and a cooling air channel arranged on the second surface. In the polycrystalline ingot casting process, a crucible filled with silicon materials is placed on a graphite table in a polycrystalline ingot casting furnace to be heated and melted, a certain temperature gradient needs to be controlled to control the crystal growth process in the crystal growth process, and the DS table or the DS table is independently matched with a heavy heat insulation cage to dissipate heat, so that the requirement cannot be met.
The utility model discloses an add polycrystal ingot casting cooling device, when the silicon material melts, the cooling device body is located the bottom of DS platform, does not influence the melting of the silicon material of DS bench side, and when long brilliant, progressively upward movement through actuating mechanism drive cooling device body progressively cools off the silicon material, promotes the long brilliant of silicon material to height and solid-liquid interface control cooling device body along with long brilliant rise, so that the heat dissipation and the temperature gradient of accurate control silicon material. The cooling speed of the silicon material is improved, and sufficient power is provided for crystal growth. The heat radiation from the heater is reflected through the reflecting coating, and the temperature gradient is accurately controlled by controlling the flow and the flow speed of the cooling air passage, so that the crystal growth efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a polycrystalline ingot casting cooling device provided by an embodiment of the present invention;
FIG. 2 is a block diagram of a cooling device body of FIG. 1;
fig. 3 is a structural view of another cooling device body in fig. 1.
Wherein:
1-cooling device body, 11-reflection coating, 12-cooling air channel, 2-driving mechanism and 21-lead screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The polycrystalline ingot casting cooling device is a device for cooling and providing a proper temperature gradient in the crystal growth process; the DS platform is a graphite platform which is arranged at the bottom of the polycrystalline ingot furnace and used for supporting a crucible for containing silicon materials, and the DS platform also plays a role in radiating the crucible and the silicon materials so as to accelerate the cooling and crystal growth speed.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 to 3, fig. 1 is a schematic view of a cooling device for polycrystalline ingots according to an embodiment of the present invention, fig. 2 is a structural view of a cooling device body in fig. 1, and fig. 3 is a structural view of another cooling device body in fig. 1.
The utility model provides a polycrystal ingot casting cooling device comprises a cooling device body 1 and a driving mechanism 2, wherein a first surface of the cooling device body 1 is provided with a reflecting coating 11 for reflecting heat radiation from a heater, the temperature of a crucible and a silicon material is reduced through the reflected heat radiation, a proper temperature gradient is convenient to provide, and sufficient power is provided for crystal growth; in addition, a cooling air flue 12 through which cooling air flows is arranged on the first surface of the cooling device body 1, and the cooling effect on the crucible and the silicon material can be accurately controlled by controlling the flow rate and the flow speed of the cooling air in the cooling air flue 12; the driving mechanism 2 is used for driving the cooling device body 1 to move to a solid-liquid interface for cooling when the crystal grows to a certain height, so that the crystal growing efficiency is improved.
The polycrystal ingot casting cooling device provided by the invention is described in more detail with reference to the specific embodiment.
The polycrystalline ingot casting cooling device comprises the following two parts: a cooling device body 1 and a driving mechanism 2 for driving the cooling device body 1 to move up and down. The cooling device body 1 is in a plate shape, the plate-shaped cooling device body 1 is arranged at the bottom of the DS platform, a reflective coating 11 is arranged on a first surface of the cooling device body 1, the reflective coating 11 is used for reflecting heat radiation from a heater, the heat radiation is actually electromagnetic waves with a certain wavelength, and the selection of the material of the reflective coating 11 can be set by referring to the wavelength of the heat radiation emitted by the heater at a corresponding temperature and can also be set by referring to the reflective coating 11 in the prior art; the second surface of the cooling device body 1 is provided with a cooling air passage 12, and cooling air flows through the cooling air passage 12 to cool the silicon material in a molten state, so that a slightly convex interface with an upward slightly convex solid-liquid interface is formed, and the crystal growth speed is improved.
When the cooling device body 1 is installed, the first surface, i.e., the reflective coating 11, is disposed toward the heater, and the second surface, i.e., the surface on which the cooling gas duct 12 is disposed, is disposed toward the center of the DS table or the crucible on the DS table. In the melting process of the silicon material, the cooling device body 1 is arranged at the bottom end of the DS platform, the reflective coating 11 does not shield the crucible, the melting of the silicon material is not influenced, and the cooling air channel 12 is also used for introducing cooling air. In the process of silicon material crystal growth, the molten silicon material is firstly cooled and radiated by the DS platform at the bottom to gradually grow crystals upwards, the cooling effect of the DS platform gradually fails to meet the cooling requirement along with the upward movement of the solid-liquid interface, and at the moment, the driving mechanism 2 can drive the cooling device body 1 to ascend opposite to the ascending of the solid-liquid interface so as to cool the silicon material. The driving mechanism 2 can adopt a driving motor to match with the lead screw 21 to lift or lower the cooling device body 1.
The cooling device body 1 mainly comprises two aspects of cooling the silicon material: firstly, the reflective coating 11 reflects heat radiation from the heater, and the heat reaching the crucible is reduced by the reflective coating 11 on the premise of inconvenient heater power; secondly, cooling air is introduced into the cooling air channel 12 to cool the crucible and the silicon material.
In a specific embodiment provided by the present invention, the cooling air passage 12 includes a horizontal pipe horizontally disposed on the second surface of the cooling device body 1, a plurality of horizontal pipes are parallel to each other, and an inlet header pipe and an outlet header pipe respectively disposed at the inlet end and the outlet end of the plurality of horizontal pipes; the inlet header pipe is vertically arranged and is simultaneously communicated with the inlet ends of the plurality of horizontal pipelines, and the outlet header pipe is vertically arranged and is simultaneously connected with the outlet ends of the plurality of horizontal pipelines. The air supply to the cooling air flue 12 can be completed by connecting the inlet main pipe with the fan through a connecting pipe, the outlet main pipe discharges cooling gas from the hearth through a certain connecting pipe, the setting of the fan and the connecting pipe can be flexibly adjusted according to the installation position of the cooling device body 1, and the setting of the fan can refer to the prior art.
In addition, in another embodiment of the present invention, the cooling air duct 12 is a serpentine pipe with serpentine bending, and the main body of the serpentine pipe is disposed in a substantially horizontal direction; wherein, the entrance point setting of cooling air flue 12 is in one side of cooling device body 1 bottom, and the exit end setting of cooling air flue 12 is in one side at cooling device body 1 top, admits air through the bottom and the carminative mode in top makes the cooling gas of the lowest temperature at first cool off solid-liquid interface for the crystallization. The inlet end and the outlet end can be arranged at the same side of the cooling device body 1, and also can be arranged at the opposite side of the cooling device body 1, and cooling gas is provided for the cooling gas channel 12 through a fan and a connecting pipeline. The arrangement of the fan and the connecting pipe can be flexibly arranged by referring to the installation position of the cooling device body 1 or the above embodiment.
For optimizing above-mentioned embodiment, the utility model provides a polycrystal ingot casting cooling device is still including setting up in the import department of cooling air flue 12, being used for detecting the flow detection device of cooling air flow, through the flow of flow detection device detection cooling air, the accurate control of being convenient for is to the cooling of silicon material, forms the temperature gradient that is favorable to the silicon material to grow brilliant. A flow rate detecting device for detecting a cooling air flow rate is a conventional art, and a mechanism and an operation principle of the flow rate detecting device will not be described here.
In addition, an inlet control valve is further arranged at the inlet of the cooling air passage 12, the inlet control valve is connected with the flow detection device in series, and the opening degree of the inlet end of the air inlet pipeline is adjusted by adjusting the closing degree of the inlet control valve, so that the flow of cooling air is adjusted.
In order to optimize the above embodiment, the polycrystal ingot casting cooling device further comprises a control device for connecting the flow detection device and the inlet control valve, and the inlet control valve is an electrically operated valve, so that the control device can adjust the inlet control valve according to whether the cooling air flow detected by the flow detection device deviates from the preset flow, and the cooling air flow of the cooling air passage 12 is always located near the preset value. For example, when the flow detection device detects that the flow of the cooling air is greater than a preset value, the control device sends an opening-reducing instruction to the inlet control valve to control the inlet control valve to act, so that the temperature gradient which is most beneficial to crystal growth of the silicon material and a slightly convex solid-liquid interface are controlled to be formed. The control device can be set by a PLC or a single chip microcomputer or by referring to the prior art. The preset value of the cooling air flow is set in relation to the crystal growth speed and the crystal formation quality, and the preset value can be controlled to the optimal preset value of the cooling air flow through the control of the crystal growth speed and the crystal formation quality.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The polycrystal ingot casting cooling device provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. The polycrystal ingot casting cooling device is characterized by comprising a cooling device body (1) and a driving mechanism (2) for driving the cooling device body (1) to move up and down along the vertical direction;
the first surface of the cooling device body (1) is provided with a reflection coating (11) for reflecting heat radiation from the heater, and the second surface of the cooling device body (1) is provided with a cooling air channel (12) for cooling air to flow through.
2. Polycrystal ingot cooling apparatus according to claim 1, characterized in that the cooling gas duct (12) comprises a plurality of horizontal pipes arranged parallel and horizontally to each other, and further comprises: the inlet header pipe is arranged at the inlet end of the horizontal pipeline and is vertically communicated with the plurality of horizontal pipelines, and the outlet header pipe is arranged at the outlet end of the horizontal pipeline and is vertically communicated with the plurality of horizontal pipelines.
3. The polycrystal ingot casting cooling device according to claim 1, wherein the cooling air passage (12) is a serpentine pipe, the main body of the serpentine pipe is horizontally arranged, the inlet end of the serpentine pipe is arranged at one side of the bottom of the cooling device body (1), and the outlet end of the serpentine pipe is arranged at one side of the top of the cooling device body (1).
4. The cooling device for the polycrystalline ingots according to any one of claims 1 to 3, further comprising a flow detection device arranged at an inlet of the cooling air duct (12) and used for detecting the flow of cooling air.
5. The polycrystalline ingot cooling device of claim 4, further comprising an inlet control valve connected in series with the flow sensing device for adjusting the inlet opening of the cooling gas duct (12).
6. The apparatus of claim 5, wherein the inlet control valve is an electrically operated valve, and further comprising a control device connected to the flow detection device and the inlet control valve for adjusting the opening of the inlet control valve to control the flow of the inlet gas to a predetermined value when the flow detection device detects a deviation of the flow of the inlet gas from the predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921127299.1U CN210134184U (en) | 2019-07-17 | 2019-07-17 | Polycrystal ingot casting cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921127299.1U CN210134184U (en) | 2019-07-17 | 2019-07-17 | Polycrystal ingot casting cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210134184U true CN210134184U (en) | 2020-03-10 |
Family
ID=69708240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921127299.1U Active CN210134184U (en) | 2019-07-17 | 2019-07-17 | Polycrystal ingot casting cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210134184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230090A (en) * | 2019-07-17 | 2019-09-13 | 晶科能源有限公司 | Polycrystalline cast ingot cooling device and method |
-
2019
- 2019-07-17 CN CN201921127299.1U patent/CN210134184U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110230090A (en) * | 2019-07-17 | 2019-09-13 | 晶科能源有限公司 | Polycrystalline cast ingot cooling device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102877117B (en) | Ingot furnace thermal field structure based on multi-heater and operation method | |
| KR100861412B1 (en) | Manufacturing equipment for poly silicon ingot | |
| CN101522960B (en) | Method and apparatus for the production of crystalline silicon substrates | |
| CN103255473B (en) | A kind of assisted heating device for zone melting furnace and monocrystal rod heat preserving method thereof | |
| RU2011101453A (en) | SYSTEMS AND METHODS OF GROWING SINGLE CRYSTAL SILICON BARS BY DIRECTIONAL CURING | |
| CN102766901B (en) | The device and method of real-time, tunable Growth by Temperature Gradient Technique large size high temperature crystal | |
| US5394825A (en) | Method and apparatus for growing shaped crystals | |
| CN102330148A (en) | Polysilicon ingot casting method with low defect and high output and thermal field structure thereof | |
| US9574825B2 (en) | Directional solidification furnace having movable heat exchangers | |
| CN107217296A (en) | A kind of silicon wafer horizontal growth apparatus and method | |
| CN202989351U (en) | Ingot furnace thermal field structure based on multiple heaters | |
| CN210134184U (en) | Polycrystal ingot casting cooling device | |
| CN102191542B (en) | Equipment and method for preparing high-purity directionally crystallized polysilicon | |
| CN103205807A (en) | Ingot furnace for preparing quasi-monocrystalline silicon and method of preparing quasi-monocrystalline silicon | |
| US20130252011A1 (en) | Multi-Crystalline Silicon Ingot And Directional Solidification Furnace | |
| CN103469305A (en) | Sapphire crystal nucleation method and special nucleation equipment therefor | |
| CN103590102B (en) | Improve the polycrystalline cast ingot technique of polysilicon chip efficiency of conversion | |
| US20130239620A1 (en) | Directional Solidification Furnace Having Movable Insulation System | |
| CN201942779U (en) | Heat shield device applied to single crystal furnace | |
| CN207376139U (en) | Orient the energy-saving and high efficient polycrystalline silicon ingot or purifying furnace of water-cooling | |
| CN107523865A (en) | A kind of energy-saving and high efficient polycrystalline silicon ingot or purifying furnace for orienting water-cooling | |
| CN106119956B (en) | A kind of polysilicon fritting casting ingot method | |
| CN102978697B (en) | A kind of crystal silicon ingot furnace moves act door gear and control method thereof | |
| CN211921735U (en) | Cooling device for improving pulling speed of monocrystalline silicon | |
| CN110230090A (en) | Polycrystalline cast ingot cooling device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |