CN217280586U - Single crystal furnace temperature control protection switch - Google Patents
Single crystal furnace temperature control protection switch Download PDFInfo
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- CN217280586U CN217280586U CN202123092604.8U CN202123092604U CN217280586U CN 217280586 U CN217280586 U CN 217280586U CN 202123092604 U CN202123092604 U CN 202123092604U CN 217280586 U CN217280586 U CN 217280586U
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- single crystal
- bimetallic strip
- connecting wire
- temperature
- heat conduction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses a single crystal growing furnace temperature control protection switch, including the connecting wire body, the one end of connecting wire body is provided with the connection end, the one end that the connection end was kept away from to the connecting wire body is provided with the control end, the one end that the connecting wire was kept away from to the control end is provided with the temperature sensing heat conduction piece, one side set up threaded hole that the connecting wire was kept away from to the temperature sensing heat conduction piece, be provided with the bimetallic strip in the control end, the one end and the temperature sensing heat conduction piece of bimetallic strip are connected, the connecting wire body includes zero line and live wire, the one end that the control end was kept away from to the bimetallic strip contacts with the live wire, the zero line is connected with the temperature sensing heat conduction piece, the bimetallic strip is overlapped through the different sheetmetal of two kinds of thermal expansion coefficients and is made and is formed, the live wire contacts with the sheetmetal that the thermal expansion coefficient is lower. The utility model discloses a temperature of temperature sensing heat conduction piece response single crystal growing furnace, when the temperature reached the action scope of bimetallic strip, the bimetallic strip disconnection circuit under the effect of internal stress avoided the single crystal growing furnace to continue to heat up.
Description
Technical Field
The utility model relates to a temperature detect switch technical field especially relates to a single crystal growing furnace temperature control protection switch.
Background
Polycrystalline silicon is a major raw material for producing solar photovoltaic products and semiconductor products. The Czochralski (Cz) method is one of the most common methods for preparing single crystal silicon, in which a high purity solid polycrystalline silicon raw material is melted in a crucible of a crystal growth furnace (i.e., a single crystal furnace) to form a melt, a seed crystal is lowered by a seed crystal pulling mechanism to contact the melt in a molten state in a rotating crucible, and then the seed crystal is pulled out according to a certain process, and the melt is solidified around the seed crystal to form a single crystal silicon rod.
The traditional Cz single crystal furnace needs to do a lot of complicated work on temperature adjustment before formally pulling, including melting polycrystalline silicon materials, maintaining the temperature, immersing seed crystals into a molten pool, observing the shape and color change of seed crystal heads, leading necks and the like. Since the exact temperature in the crystal puller and the temperature distribution of the bath are not known, a considerable amount of time is required to wait. These processes are time consuming and labor intensive, and the production time of the silicon single crystal is severely prolonged, which limits the production efficiency of the czochralski silicon.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a single crystal growing furnace temperature accuse protection switch, temperature sensing heat conduction piece through control end one side is connected with the single crystal growing furnace, the temperature of connecting the completion back single crystal growing furnace passes through temperature sensing heat conduction piece and transmits to the bimetallic strip, when reaching the action temperature of bimetallic strip, the bimetallic strip is heated the back because the expansion coefficient is different, although the temperature that risees communicates with each other, the sheetmetal elongation that the expansion coefficient is high is big, then the bimetallic strip is crooked to the sheetmetal of the higher one side of expansion coefficient, bimetallic strip and live wire disconnect under the effect of internal stress, make live wire and zero line form and open circuit, stop to heat the single crystal growing furnace, reply vertical state after the bimetallic strip cooling, contact with the live wire, continue conduction current, conveniently control the temperature.
The above technical object of the present invention can be achieved by the following technical solutions: the utility model provides a single crystal growing furnace temperature control protection switch, includes the connecting wire body, the one end of connecting wire body is provided with the connection end, its characterized in that, the one end that the connection end was kept away from to the connecting wire body is provided with the control end, the one end that the connecting wire was kept away from to the control end is provided with the temperature sensing heat conduction piece, one side that the connecting wire was kept away from to the temperature sensing heat conduction piece is seted up threaded hole, be provided with bimetallic strip in the control end, the one end and the temperature sensing heat conduction piece of bimetallic strip are connected, the connecting wire body includes zero line and live wire, the one end that the control end was kept away from to bimetallic strip contacts with the live wire, the zero line is connected with the temperature sensing heat conduction piece, bimetallic strip is made through the overlapping of two kinds of sheetmetal that thermal expansion coefficient is different, the live wire contacts with the sheetmetal that thermal expansion coefficient is lower.
Through above-mentioned technical scheme, the temperature sensing heat conduction piece through control end one side is connected with the single crystal growing furnace, the temperature of connecting the completion back single crystal growing furnace passes through the temperature sensing heat conduction piece and transmits to the bimetallic strip, when reaching the action temperature of bimetallic strip, the bimetallic strip is heated the back because the expansion coefficient is different, though the temperature that risees communicates with each other, but the metallic strip elongation that the expansion coefficient is high is big, so the bimetallic strip is crooked to the metallic strip of the higher one side of expansion coefficient, bimetallic strip and live wire disconnection under the effect of internal stress, make live wire and zero line form and open circuit, stop heating the single crystal growing furnace, reply vertical state after the bimetallic strip cooling, contact with the live wire, continue conduction current, conveniently control the temperature.
The utility model discloses still further set up to: the length of the connecting wire body is 100-150 mm.
Through the technical scheme, customization can be carried out according to the difference of the single crystal furnace, and the temperature control effect is ensured.
The utility model discloses still further set up to: and the outer sides of the live wire and the zero wire are wrapped with heat insulation layers.
Through above-mentioned technical scheme, increase the high temperature resistant effect of live wire and zero line.
The utility model discloses still further set up to: the bimetallic strip has three types, and the action temperature ranges of the three types of bimetallic strips are 40-70 ℃, 110-.
Through the technical scheme, the single crystal furnace can be customized according to the requirements of customers, and is convenient to be suitable for single crystal furnaces with different temperatures.
The utility model discloses still further set up to: the two metal sheets are respectively a copper sheet and an iron sheet, and the copper sheet is in contact with the live wire.
According to the technical scheme, because the coefficient of thermal expansion of copper is larger than that of iron, when the bimetallic strip is heated, although the temperature is raised to be the same, the elongation of the iron strip is large, so that the bimetallic strip bends towards one side of the iron strip, the copper sheet is disconnected with the live wire, and the single crystal furnace is disconnected.
The utility model discloses still further set up to: two limiting grooves are formed in the control end, and the live wire and the zero wire are respectively arranged in the two limiting grooves.
Through above-mentioned technical scheme, the removal of live wire and zero line can be restricted to two detached restriction grooves, avoids receiving the live wire and the zero line after external force and contacts and lead to opening circuit, promotes the security.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is a cross-sectional view taken along the line a-a of fig. 2 according to the present invention.
The reference numbers in the figures mean: 1. a live line; 2. a zero line; 3. connecting the end heads; 4. a control end; 5. a temperature-sensing heat-conducting block; 6. a threaded hole; 7. iron sheets; 8. a copper sheet; 9. and a heat insulating layer.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1 and 3, the single crystal furnace temperature control protection switch comprises a connecting line body, wherein the length of the connecting line body is 135mm, and the length of the connecting line body can be customized according to the requirements of customers. One end of the connecting wire body is provided with a connecting end 3, and the connecting end 3 is used for communicating a circuit. The one end that the connecting end 3 was kept away from to the connecting wire body is provided with control end 4, and the one end that connecting wire was kept away from to control end 4 is provided with temperature sensing heat conduction piece 5. One side of the temperature-sensing heat-conducting block 5, which is far away from the connecting line, is provided with a threaded hole 6, and the temperature-sensing heat-conducting block 5 is connected with the single crystal furnace, so that the temperature of the single crystal furnace can be conducted conveniently. A bimetallic strip is arranged in the control end head 4, one end of the bimetallic strip is connected with the temperature-sensing heat-conducting block 5, and the temperature-sensing heat-conducting block 5 can conduct temperature to the bimetallic strip. The connecting wire body includes zero line 2 and live wire 1, and the bimetallic strip is kept away from the one end of control end 4 and is contacted with live wire 1. The zero line 2 is connected with a temperature sensing heat conduction block 5. The bimetallic strip is used for conducting the bimetallic strip and is manufactured by overlapping two metal sheets with different thermal expansion coefficients, the bimetallic strip is provided with three bimetallic strips, the action temperatures of the three bimetallic strips are respectively 55 ℃, 125 ℃ and 265 ℃, and the bimetallic strip can be customized according to the requirements of customers. Two metal sheets of one group of bimetallic strips are a copper sheet 8 and an iron sheet 7 respectively, and the copper sheet 8 is in contact with the live wire 1. Because the coefficient of thermal expansion of copper is larger than that of iron, when the bimetallic strip is heated, although the raised temperature is the same, the elongation of the iron strip 7 is large, so that the bimetallic strip bends towards one side of the iron strip 7, the copper sheet 8 is disconnected with the live wire 1, the single crystal furnace is disconnected, the temperature of the single crystal furnace is prevented from continuously rising, and the temperature control protection is convenient to carry out.
As shown in fig. 3, in this embodiment, two limiting grooves are formed in the control terminal 4, and the live wire 1 and the neutral wire 2 are respectively formed in the two limiting grooves. The live wire 1 and the zero line 2 are separated through the two limiting grooves, and the situation that the live wire 1 and the zero line 2 are in contact to cause circuit break after external force is received is avoided. The outside parcel of live wire 1 and zero line 2 has thermal-insulated insulating layer 9, increases the high temperature resistant effect of live wire 1 and zero line 2.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (6)
1. A temperature control protection switch of a single crystal furnace comprises a connecting wire body, wherein one end of the connecting wire body is provided with a connecting end (3), and the temperature control protection switch is characterized in that one end of the connecting wire body, which is far away from the connecting end (3), is provided with a control end (4), one end of the control end (4), which is far away from the connecting wire, is provided with a temperature sensing heat conduction block (5), one side of the temperature sensing heat conduction block (5), which is far away from the connecting wire, is provided with a threaded hole (6), a bimetallic strip is arranged in the control end (4), one end of the bimetallic strip is connected with the temperature sensing heat conduction block (5), the connecting wire body comprises a zero line (2) and a live line (1), one end of the bimetallic strip, which is far away from the control end (4), is contacted with the live line (1), the zero line (2) is connected with the temperature sensing heat conduction block (5), and the bimetallic strip is manufactured by overlapping two metal strips with different thermal expansion coefficients, the live wire (1) is in contact with a metal sheet having a lower coefficient of thermal expansion.
2. The single crystal furnace temperature control protection switch of claim 1, which is characterized in that: the length of the connecting wire body is 100-150 mm.
3. The single crystal furnace temperature control protection switch of claim 1, which is characterized in that: and the outer sides of the live wire (1) and the zero wire (2) are wrapped with heat insulation layers (9).
4. The single crystal furnace temperature control protection switch of claim 1, which is characterized in that: the bimetallic strip has three types, and the action temperature ranges of the three types of bimetallic strips are 40-70 ℃, 110-.
5. The single crystal furnace temperature control protection switch of claim 1, which is characterized in that: the two metal sheets are a copper sheet (8) and an iron sheet (7) respectively, and the copper sheet (8) is in contact with the live wire (1).
6. The single crystal furnace temperature control protection switch of claim 1, wherein: two limiting grooves are formed in the control end (4), and the live wire (1) and the zero wire (2) are respectively arranged in the two limiting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123092604.8U CN217280586U (en) | 2021-12-08 | 2021-12-08 | Single crystal furnace temperature control protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123092604.8U CN217280586U (en) | 2021-12-08 | 2021-12-08 | Single crystal furnace temperature control protection switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217280586U true CN217280586U (en) | 2022-08-23 |
Family
ID=82882609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123092604.8U Active CN217280586U (en) | 2021-12-08 | 2021-12-08 | Single crystal furnace temperature control protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217280586U (en) |
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2021
- 2021-12-08 CN CN202123092604.8U patent/CN217280586U/en active Active
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