CN212628448U - Monocrystalline silicon heater - Google Patents
Monocrystalline silicon heater Download PDFInfo
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- CN212628448U CN212628448U CN202021780145.5U CN202021780145U CN212628448U CN 212628448 U CN212628448 U CN 212628448U CN 202021780145 U CN202021780145 U CN 202021780145U CN 212628448 U CN212628448 U CN 212628448U
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Abstract
The utility model discloses a monocrystalline silicon heater relates to photovoltaic equipment technical field, and the main objective provides a monocrystalline silicon heater that can splice. The utility model discloses a main technical scheme does: a monocrystalline silicon heater comprising: a first group of heating fins; the middle part of the third component is provided with a first foot connecting hole, and the middle part of the fourth component is provided with a second foot connecting hole; the two ends of the first connecting assembly are respectively connected to the first assembly and the third assembly, the two ends of the second connecting assembly are respectively connected to the first assembly and the fourth assembly, the two ends of the third connecting assembly are respectively connected to the second assembly and the third assembly, and the two ends of the fourth connecting assembly are respectively connected to the second assembly and the fourth assembly; and the first connecting pin is detachably connected with the first foot connecting hole, and the second connecting pin is detachably connected with the second foot connecting hole. The utility model is mainly used for producing monocrystalline silicon.
Description
Technical Field
The utility model relates to a photovoltaic equipment technical field especially relates to a monocrystalline silicon heater.
Background
Photovoltaic power generation is one of the most important clean energy sources at present, and has great development potential. The photoelectric conversion is to convert solar energy into electric energy by utilizing a photovoltaic effect, and silicon becomes a main material of a solar cell in a photovoltaic market by virtue of the advantages of high reserves, relative maturity of a preparation process, a proper energy band structure, cleanness, no pollution, high stability and the like.
Single crystal silicon, also called silicon single crystal, is a semiconductor material, and the prepared silicon single crystal is mainly used for integrated circuit elements and solar cells. With the recent continuous emphasis and development of environmental protection energy, solar energy has been widely developed and utilized as a green energy source by the general emphasis of countries all over the world, which has led to a drastic increase in the amount of single crystal/polycrystal used for solar energy conversion.
The existing monocrystalline silicon heater is usually processed by adopting an integrated graphite blank body, and the heating area of the heater is very important, so the production cost of the monocrystalline silicon is determined by the cost of the monocrystalline silicon heater.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides a monocrystalline silicon heater, and mainly aims to provide a monocrystalline silicon heater capable of being spliced.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
the embodiment of the utility model provides a monocrystalline silicon heater, include:
a first set of heating fins comprising a first component and a second component;
the second heating plate group comprises a third component and a fourth component, wherein a first foot connecting hole is formed in the middle of the third component, and a second foot connecting hole is formed in the middle of the fourth component;
the connecting assembly comprises a first connecting assembly, a second connecting assembly, a third connecting assembly and a fourth connecting assembly, two ends of the first connecting assembly are respectively connected to the first assembly and the third assembly, two ends of the second connecting assembly are respectively connected to the first assembly and the fourth assembly, two ends of the third connecting assembly are respectively connected to the second assembly and the third assembly, and two ends of the fourth connecting assembly are respectively connected to the second assembly and the fourth assembly;
the connecting pin comprises a first connecting pin and a second connecting pin, the first connecting pin can be detachably connected with the first foot connecting hole, and the second connecting pin can be detachably connected with the second foot connecting hole.
Further, each connecting assembly comprises a connecting piece and a plurality of connecting bolts, a plurality of threaded holes are formed in the connecting piece, and each connecting bolt is in threaded connection with one of the threaded holes.
Further, the plurality of connecting bolts comprise a first connecting bolt and a second connecting bolt, the plurality of threaded holes comprise a first threaded hole and a second threaded hole, the first threaded hole is formed in one end side of the connecting piece, and the second threaded hole is formed in the other end side of the connecting piece.
Further, both ends of the first assembly have first connection holes, both ends of the second assembly have second connection holes, both ends of the third assembly have third connection holes, both ends of the fourth assembly have fourth connection holes, the first connection bolt of the first connection assembly sequentially passes through the first screw hole and the first connection hole of the first connection assembly, the second connection bolt of the first connection assembly sequentially passes through the second screw hole and the third connection hole of the first connection assembly, the first connection bolt of the second connection assembly sequentially passes through the first screw hole and the first connection hole of the second connection assembly, the second connection bolt of the second connection assembly sequentially passes through the second screw hole and the fourth connection hole of the second connection assembly, third coupling assembling first connecting bolt passes in proper order third coupling assembling first screw hole with the second connecting hole, third coupling assembling second connecting bolt passes in proper order third coupling assembling second screw hole with the third connecting hole, fourth coupling assembling first connecting bolt passes in proper order fourth coupling assembling first screw hole with the second connecting hole, fourth coupling assembling second connecting bolt passes in proper order fourth coupling assembling second screw hole with the fourth connecting hole.
Furthermore, the first assembly, the third assembly, the second assembly and the fourth assembly are sequentially connected end to form an annular structure.
Furthermore, the middle part of the third component is provided with a first groove, one end of the first connecting pin is embedded into the first groove, the middle part of the fourth component is provided with a second groove, and one end of the second connecting pin is embedded into the second groove.
Furthermore, one side of the third component, which is close to the first groove, is a first side surface, one side of the first connecting pin, which is far away from the first groove, is a second side surface, and the first side surface and the second side surface are located on the same longitudinal plane; one side of the fourth component, which is close to the second groove, is a third side, one side of the second connecting foot, which is far away from the second groove, is a fourth side, and the third side and the fourth side are located on the same longitudinal plane.
Furthermore, one end side of the first connecting pin, which is far away from the third component, is provided with a first electrode connecting hole, and one end side of the second connecting pin, which is far away from the fourth component, is provided with a second electrode connecting hole.
Further, the connecting foot is L-shaped.
Compared with the prior art, the utility model discloses following technological effect has:
in the technical scheme provided by the embodiment of the utility model, the first heating sheet group comprises a first component and a second component; the second heating plate group comprises a third component and a fourth component, the middle part of the third component is provided with a first foot connecting hole, and the middle part of the fourth component is provided with a second foot connecting hole; the connecting assembly comprises a first connecting assembly, a second connecting assembly, a third connecting assembly and a fourth connecting assembly, wherein two ends of the first connecting assembly are respectively connected to the first assembly and the third assembly; the connecting pins comprise a first connecting pin and a second connecting pin, the first connecting pin is detachably connected to the first foot connecting hole, the second connecting pin is detachably connected to the second foot connecting hole, compared with the prior art, the heater is processed by adopting an integrated graphite blank body, and the heating area of the heater is crucial, so the production cost of monocrystalline silicon is determined by the cost of the monocrystalline silicon heater The third subassembly, second subassembly and fourth subassembly can enclose into a ring, rethread first foot connecting hole and second foot connecting hole are connected first connecting pin and second connecting pin respectively, make the heater form the modularization part through the mode of concatenation, thereby the manufacturing cost of monocrystalline silicon heater has been reduced, and simultaneously, when one of them part appears damaged, only need to change damaged part can, thereby further reach the technological effect who reduces the manufacturing cost of monocrystalline silicon heater, and simultaneously, can also prolong the life of monocrystalline silicon heater, thereby reach the technological effect who improves the performance of enterprises.
Drawings
Fig. 1 is a schematic perspective view of a monocrystalline silicon heater according to an embodiment of the present invention;
fig. 2 is a schematic front view of a monocrystalline silicon heater according to an embodiment of the present invention;
fig. 3 is a schematic top view of a monocrystalline silicon heater according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, the present invention provides a monocrystalline silicon heater, including:
the first heating plate group comprises a first component 11 and a second component 12;
the second heating plate group comprises a third component 21 and a fourth component 22, a first foot connecting hole 23 is formed in the middle of the third component 21, and a second foot connecting hole 24 is formed in the middle of the fourth component 22;
the connecting assembly comprises a first connecting assembly 31, a second connecting assembly 32, a third connecting assembly 33 and a fourth connecting assembly 34, two ends of the first connecting assembly 31 are respectively connected to the first assembly 11 and the third assembly 21, two ends of the second connecting assembly 32 are respectively connected to the first assembly 11 and the fourth assembly 22, two ends of the third connecting assembly 33 are respectively connected to the second assembly 12 and the third assembly 21, and two ends of the fourth connecting assembly 34 are respectively connected to the second assembly 12 and the fourth assembly 22;
and the connection pins comprise a first connection pin 41 and a second connection pin 42, the first connection pin 41 is detachably connected to the first foot connection hole 23, and the second connection pin 42 is detachably connected to the second foot connection hole 24.
In the technical solution provided by the embodiment of the present invention, the first heating sheet group includes a first component 11 and a second component 12; the second heating plate group comprises a third component 21 and a fourth component 22, a first foot connecting hole 23 is formed in the middle of the third component 21, and a second foot connecting hole 24 is formed in the middle of the fourth component 22; the connecting assembly comprises a first connecting assembly 31, a second connecting assembly 32, a third connecting assembly 33 and a fourth connecting assembly 34, two ends of the first connecting assembly 31 are respectively connected to the first assembly 11 and the third assembly 21, two ends of the second connecting assembly 32 are respectively connected to the first assembly 11 and the fourth assembly 22, two ends of the third connecting assembly 33 are respectively connected to the second assembly 12 and the third assembly 21, and two ends of the fourth connecting assembly 34 are respectively connected to the second assembly 12 and the fourth assembly 22; the connecting pins comprise a first connecting pin 41 and a second connecting pin 42, the first connecting pin 41 is detachably connected with the first foot connecting hole 23, the second connecting pin 42 is detachably connected with the second foot connecting hole 24, compared with the prior art, the heater is processed by adopting an integrated graphite blank body, the heating area of the heater is important, therefore, the production cost of the monocrystalline silicon is determined by the cost of the monocrystalline silicon heater, the cost of the heater is increased because the heater is processed by adopting the integrated graphite blank body, and the utilization rate of the heater is reduced because the whole heater needs to be replaced after the heater is partially damaged, in the technical scheme, the first component 11, the third component 21, the second component 12 and the fourth component 22 are arranged end to end, and then the first component 11, the third component 21, the second component 12 and the fourth component 22 are connected by a plurality of connecting components, make first subassembly 11, third subassembly 21, second subassembly 12 and fourth subassembly 22 can enclose into a ring, rethread first foot connecting hole 23 and second foot connecting hole 24 are connected first connecting foot 41 and second connecting foot 42 respectively, make the heater can form the modularization part through the mode of concatenation, thereby the manufacturing cost of monocrystalline silicon heater has been reduced, and simultaneously, when one of them part appears the damage, only need to change damaged part can, thereby further reach the technological effect who reduces the manufacturing cost of monocrystalline silicon heater, and simultaneously, can also prolong the life of monocrystalline silicon heater, thereby reach the technological effect who improves the performance of enterprises.
The first heating plate group comprises a first assembly 11 and a second assembly 12, and the first assembly 11 and the second assembly 12 have the same structure; the second heating sheet group comprises a third component 21 and a fourth component 22, a first foot connecting hole 23 is arranged in the middle of the third component 21, a second foot connecting hole 24 is arranged in the middle of the fourth component 22, the third component 21 and the fourth component 22 have the same structure, the first component 11, the third component 21, the second component 12 and the fourth component 22 are arranged end to form a ring structure, that is, the first component 11, the third component 21, the second component 12 and the fourth component 22 occupy 90 degrees in the ring structure, the connecting components comprise a first connecting component 31, a second connecting component 32, a third connecting component 33 and a fourth connecting component 34, two ends of the first connecting component 31 are respectively connected to the first component 11 and the third component 21, two ends of the second connecting component 32 are respectively connected to the first component 11 and the fourth component 22, two ends of the third connecting component 33 are respectively connected to the second component 12 and the third component 21, the two ends of the fourth connecting assembly 34 are respectively connected to the second assembly 12 and the fourth assembly 22, so that the first assembly 11, the third assembly 21, the second assembly 12 and the fourth assembly 22 can be in final connection and form a ring structure, and the ring structure can keep the stability of the thermal field; the connection pins include a first connection pin 41 and a second connection pin 42, the first connection pin 41 is detachably connected to the first foot connection hole 23, the second connection pin 42 is detachably connected to the second foot connection hole 24, and the connection pins serve to connect the electrodes, therefore, two connection pins are required, one end side of the first connection pin 41 away from the third component 21 is provided with a first electrode connection hole, one end side of the second connection pin 42 away from the fourth component 22 is provided with a second electrode connection hole, the first connection pin 41 is connected to the positive electrode of the electrode, the second connection pin 42 is connected to the negative electrode of the electrode, the connection pins are generally L-shaped, of course, other shapes can be adopted as long as the electrodes can be connected, in the technical scheme, the first component 11, the third component 21, the second component 12 and the fourth component 22 are arranged end to end, and then the first component 11 is connected by a plurality of connection components 11, The third module 21, the second module 12 and the fourth module 22 are connected to form a ring, the first module 11, the third module 21, the second module 12 and the fourth module 22 are sequentially connected end to form a ring structure, that is, the first module 11, the third module 21, the second module 12 and the fourth module 22 are connected in a staggered manner, the first foot connecting hole 23 and the second foot connecting hole 24 respectively connect the first connecting foot 41 and the second connecting foot 42 to form an axisymmetric structure of the monocrystalline silicon heater, and the first foot connecting hole 23 and the second foot connecting hole 24 respectively connect the first connecting foot 41 and the second connecting foot 42 to form a modular component by foot splicing, so that the manufacturing cost of the monocrystalline silicon heater is reduced, meanwhile, when one of the components is damaged, only the damaged component needs to be replaced, so that the technical effect of reducing the manufacturing cost of the monocrystalline silicon heater is further achieved, meanwhile, the service life of the monocrystalline silicon heater can be prolonged, and the technical effect of improving enterprise benefits is achieved; it should be noted that the first heating plate group, the second heating plate group, the connecting assembly and the connecting pin are all made of graphite materials.
Further, each connecting assembly comprises a connecting piece and a plurality of connecting bolts, the connecting piece is provided with a plurality of threaded holes, and each connecting bolt is in threaded connection with one of the threaded holes. In this embodiment, a connection assembly is further defined, the connection piece has at least two threaded holes, typically four to 8 threaded holes, where four threaded holes fix the connection piece on the first heating sheet group through connection bolts, and the other four threaded holes fix the connection piece on the second heating sheet group through connection bolts, so that the first assembly 11, the third assembly 21, the second assembly 12, and the fourth assembly 22 can be sequentially connected end to end, thereby achieving a technical effect of facilitating connection of the first assembly 11, the third assembly 21, the second assembly 12, and the fourth assembly 22, and further improving connection stability among the first assembly 11, the third assembly 21, the second assembly 12, and the fourth assembly 22.
Further, the plurality of connecting bolts include first connecting bolt and second connecting bolt, and the plurality of screw holes include first screw hole and second screw hole, and first screw hole sets up in the one end side of connection piece, and the second screw hole sets up in the other end side of connection piece. In this embodiment, the position of screw hole has further been injectd, sets up first screw hole in the one end side of connection piece, and the second screw hole sets up in the other end side of connection piece for the screw hole at connection piece both ends is closer to first heating plate group or second heating plate group, improves the connectivity and the stability of connection piece.
Further, both ends of the first assembly 11 have first connection holes, both ends of the second assembly 12 have second connection holes, both ends of the third assembly 21 have third connection holes, both ends of the fourth assembly 22 have fourth connection holes, a first connection bolt of the first connection assembly 31 sequentially passes through the first screw hole and the first connection hole of the first connection assembly 31, a second connection bolt of the first connection assembly 31 sequentially passes through the second screw hole and the third connection hole of the first connection assembly 31, a first connection bolt of the second connection assembly 32 sequentially passes through the first screw hole and the first connection hole of the second connection assembly 32, a second connection bolt of the second connection assembly 32 sequentially passes through the second screw hole and the fourth connection hole of the second connection assembly 32, a first connection bolt of the third connection assembly 33 sequentially passes through the first screw hole and the second connection hole of the third connection assembly 33, the second connecting bolt of the third connecting assembly 33 sequentially passes through the second threaded hole and the third connecting hole of the third connecting assembly 33, the first connecting bolt of the fourth connecting assembly 34 sequentially passes through the first threaded hole and the second connecting hole of the fourth connecting assembly 34, and the second connecting bolt of the fourth connecting assembly 34 sequentially passes through the second threaded hole and the fourth connecting hole of the fourth connecting assembly 34. In this embodiment, a first heating plate group and a second heating plate group are further defined, the first assembly 11 has first connection holes at both ends thereof, the second assembly 12 has second connection holes at both ends thereof, the third assembly 21 has third connection holes at both ends thereof, the fourth assembly 22 has fourth connection holes at both ends thereof, the first connection bolt of the first connection assembly 31 sequentially passes through the first screw hole and the first connection hole of the first connection assembly 31, the second connection bolt of the first connection assembly 31 sequentially passes through the second screw hole and the third connection hole of the first connection assembly 31, the first connection bolt of the second connection assembly 32 sequentially passes through the first screw hole and the first connection hole of the second connection assembly 32, the second connection bolt of the second connection assembly 32 sequentially passes through the second screw hole and the fourth connection hole of the second connection assembly 32, the first connection bolt of the third connection assembly 33 sequentially passes through the first screw hole and the second connection hole of the third connection assembly 33, the second connecting bolt of the third connecting assembly 33 sequentially passes through the second threaded hole and the third connecting hole of the third connecting assembly 33, the first connecting bolt of the fourth connecting assembly 34 sequentially passes through the first threaded hole and the second connecting hole of the fourth connecting assembly 34, the second connecting bolt of the fourth connecting assembly 34 sequentially passes through the second threaded hole and the fourth connecting hole of the fourth connecting assembly 34, so that the two ends of the first assembly 11 are respectively connected with the third assembly 21 and the fourth assembly 22 through the first connecting assembly 31 and the second connecting assembly 32, and the two ends of the second assembly 12 are respectively connected with the third assembly 21 and the fourth assembly 22 through the third connecting assembly 33 and the fourth connecting assembly 34, thereby further improving the connectivity and stability of the monocrystalline silicon heater.
Further, the middle portion of the third component 21 has a first groove, one end of the first connection pin 41 is embedded in the first groove, the middle portion of the fourth component 22 has a second groove, and one end of the second connection pin 42 is embedded in the second groove. In this embodiment, a second heating plate group is further defined, a first groove is formed in the middle of the third component 21, one end of the first connecting pin 41 is embedded into the first groove, so that the first connecting pin 41 can be completely clamped in the first groove, thereby preventing the first connecting pin 41 from rotating or being installed infirm, a second groove is formed in the middle of the fourth component 22, one end of the second connecting pin 42 is embedded into the second groove, so that the second connecting pin 42 can be completely clamped in the second groove, thereby preventing the second connecting pin 42 from rotating or being installed infirm, and further improving the stability of the first connecting pin 41 and the second connecting pin 42; optionally, one side of the third component 21 close to the first groove is a first side surface, one side of the first connection pin 41 away from the first groove is a second side surface, and the first side surface and the second side surface are located on the same longitudinal plane; one side of the fourth component 22 close to the second groove is a third side, one side of the second connecting pin 42 far away from the second groove is a fourth side, and the third side and the fourth side are located on the same longitudinal plane, so that the first connecting pin 41 is completely embedded in the first groove, and gradient differences between the first connecting pin 41 and the third component 21 and between the second connecting pin 42 and the fourth component 22 are eliminated; optionally, the first side and the second side are both arc surfaces and have the same radian, and the third side and the fourth side are both arc surfaces and have the same radian, so as to further improve the connectivity and stability of the connection pins, eliminate the gradient difference between the first connection pin 41 and the third component 21 and between the second connection pin 42 and the fourth component 22, and improve the single crystal silicon heater.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A monocrystalline silicon heater, comprising:
a first set of heating fins comprising a first component and a second component;
the second heating plate group comprises a third component and a fourth component, wherein a first foot connecting hole is formed in the middle of the third component, and a second foot connecting hole is formed in the middle of the fourth component;
the connecting assembly comprises a first connecting assembly, a second connecting assembly, a third connecting assembly and a fourth connecting assembly, two ends of the first connecting assembly are respectively connected to the first assembly and the third assembly, two ends of the second connecting assembly are respectively connected to the first assembly and the fourth assembly, two ends of the third connecting assembly are respectively connected to the second assembly and the third assembly, and two ends of the fourth connecting assembly are respectively connected to the second assembly and the fourth assembly;
the connecting pin comprises a first connecting pin and a second connecting pin, the first connecting pin can be detachably connected with the first foot connecting hole, and the second connecting pin can be detachably connected with the second foot connecting hole.
2. The monocrystalline silicon heater of claim 1,
each connecting component comprises a connecting piece and a plurality of connecting bolts, the connecting piece is provided with a plurality of threaded holes, and each connecting bolt is in threaded connection with one of the threaded holes.
3. The monocrystalline silicon heater of claim 2,
the plurality of connecting bolts comprise first connecting bolts and second connecting bolts, the plurality of threaded holes comprise first threaded holes and second threaded holes, the first threaded holes are formed in one end side of the connecting piece, and the second threaded holes are formed in the other end side of the connecting piece.
4. The monocrystalline silicon heater of claim 3,
the two ends of the first assembly are provided with first connecting holes, the two ends of the second assembly are provided with second connecting holes, the two ends of the third assembly are provided with third connecting holes, the two ends of the fourth assembly are provided with fourth connecting holes, the first connecting bolt of the first connecting assembly sequentially passes through the first threaded hole of the first connecting assembly and the first connecting hole, the second connecting bolt of the first connecting assembly sequentially passes through the second threaded hole of the first connecting assembly and the third connecting hole, the first connecting bolt of the second connecting assembly sequentially passes through the first threaded hole of the second connecting assembly and the first connecting hole, the second connecting bolt of the second connecting assembly sequentially passes through the second threaded hole of the second connecting assembly and the fourth connecting hole, the first connecting bolt of the third connecting assembly sequentially passes through the first threaded hole of the third connecting assembly And the second connecting hole, the second connecting bolt of third coupling assembling passes in proper order the third coupling assembling the second screw hole with the third connecting hole, the fourth coupling assembling the first connecting bolt passes in proper order the fourth coupling assembling the first screw hole with the second connecting hole, the fourth coupling assembling the second connecting bolt passes in proper order the fourth coupling assembling the second screw hole with the fourth connecting hole.
5. The monocrystalline silicon heater of claim 1,
the first assembly, the third assembly, the second assembly and the fourth assembly are sequentially connected end to form an annular structure.
6. The monocrystalline silicon heater of claim 1,
the middle part of the third component is provided with a first groove, one end of the first connecting pin is embedded into the first groove, the middle part of the fourth component is provided with a second groove, and one end of the second connecting pin is embedded into the second groove.
7. The monocrystalline silicon heater of claim 6,
one side, close to the first groove, of the third component is a first side surface, one side, far away from the first groove, of the first connecting pin is a second side surface, and the first side surface and the second side surface are located on the same longitudinal plane; one side of the fourth component, which is close to the second groove, is a third side, one side of the second connecting foot, which is far away from the second groove, is a fourth side, and the third side and the fourth side are located on the same longitudinal plane.
8. The monocrystalline silicon heater of any one of claims 1 to 7,
one end side of the first connecting pin, which is far away from the third component, is provided with a first electrode connecting hole, and one end side of the second connecting pin, which is far away from the fourth component, is provided with a second electrode connecting hole.
9. The monocrystalline silicon heater of any one of claims 1 to 7,
the connecting foot is L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021780145.5U CN212628448U (en) | 2020-08-24 | 2020-08-24 | Monocrystalline silicon heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021780145.5U CN212628448U (en) | 2020-08-24 | 2020-08-24 | Monocrystalline silicon heater |
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| Publication Number | Publication Date |
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| CN212628448U true CN212628448U (en) | 2021-02-26 |
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| CN202021780145.5U Active CN212628448U (en) | 2020-08-24 | 2020-08-24 | Monocrystalline silicon heater |
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| CN (1) | CN212628448U (en) |
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