CN219586253U

CN219586253U - A heat preservation section of thick bamboo for single crystal growing furnace

Info

Publication number: CN219586253U
Application number: CN202320644375.6U
Authority: CN
Inventors: 许建; 王林; 李晓东; 安磊; 郭志荣; 刘振宇
Original assignee: Inner Mongolia Zhonghuan Crystal Materials Co Ltd
Current assignee: Inner Mongolia Zhonghuan Crystal Materials Co Ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-25
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a heat preservation cylinder for a single crystal furnace, which comprises a first cylinder body and a second cylinder body, wherein the first cylinder body is covered on the outer side of a heater of the single crystal furnace and is used for preserving heat; the second barrel covers the outside of the first barrel, an empty area is arranged between the second barrel and the first barrel, and the second barrel is used for reflecting heat radiation generated by the heater. According to the utility model, the first barrel body can keep the temperature of the heater, so that heat loss caused by heat conduction is reduced, the second barrel body can reflect heat radiation generated by the heater, the heat insulation performance of the single crystal furnace can be further improved, the heat efficiency of the heater is greatly improved, and finally, the purpose of reducing the power consumption of the single crystal furnace is achieved.

Description

A heat preservation section of thick bamboo for single crystal growing furnace

Technical Field

The utility model relates to the technical field of photovoltaics, in particular to a heat preservation cylinder for a single crystal furnace.

Background

The current higher electricity consumption severely restricts the normal production operation of enterprises, and in order to avoid being negatively affected by similar conditions again, the reduction of the electricity consumption of the single crystal furnace becomes important. At present, in order to melt silicon solution at high temperature, the working temperature of a heater of a single crystal furnace is about 1300-1900 ℃, and part of heat generated by the heater is lost through heat radiation and heat conduction to the outside, so that the heater is one of sources of the power consumption of the single crystal furnace, the heat preservation and heat transfer modes of a thermal field in the single crystal furnace are analyzed, the heat preservation performance of the outer side of the heater is improved, the heat loss can be effectively reduced, and therefore, a heat preservation barrel of the single crystal furnace is needed to inhibit heat loss caused by heat conduction and heat radiation, and the purpose of reducing the power consumption of the single crystal furnace is achieved.

Disclosure of Invention

The utility model aims to provide a heat preservation cylinder for a single crystal furnace, which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a thermal barrel for a single crystal furnace, comprising:

the first cylinder is covered on the outer side of the heater of the single crystal furnace and is used for heat preservation;

the second cylinder body is covered on the outer side of the first cylinder body, an empty area is arranged between the second cylinder body and the first cylinder body, and the second cylinder body is used for reflecting heat radiation generated by the heater.

Above technical scheme is preferable, first barrel includes heat preservation section of thick bamboo and first heat preservation, the heat preservation section of thick bamboo cover is located the outside of heater, first heat preservation is located on the lateral wall of heat preservation section of thick bamboo.

According to the technical scheme, preferably, the heat preservation cylinder adopts carbon or graphite heat preservation cylinder.

In the above technical solution, preferably, the width of the empty area is 20-50mm.

Above technical scheme is preferable, the second barrel includes reflection section of thick bamboo and second heat preservation, reflection section of thick bamboo cover is located the outside of first barrel, the second heat preservation is located on the lateral wall of reflection section of thick bamboo.

In the above technical solution, preferably, the reflecting cylinder adopts a molybdenum cylinder or a quartz cylinder.

In the technical scheme, preferably, the surface roughness Ra of the molybdenum cylinder or the quartz cylinder is less than or equal to 0.4.

In the above technical solution, preferably, the thickness of the molybdenum tube is less than or equal to 1mm, or the thickness of the quartz tube is less than or equal to 8mm.

According to the technical scheme, preferably, the first heat preservation layer and/or the second heat preservation layer adopt carbon fiber heat preservation felt.

According to the technical scheme, preferably, the positioning ring is arranged below the first heat preservation layer and the reflection cylinder, and the positioning ring is provided with an upward protrusion corresponding to the empty area.

In summary, the utility model has at least the following technical effects and advantages:

the first cylinder is covered on the outer side of the heater of the single crystal furnace, so that the heater can be insulated, heat loss caused by heat conduction is reduced, the second cylinder is covered on the outer side of the first cylinder, heat radiation generated by the heater can be reflected, the heat insulation performance of the single crystal furnace can be further improved, the heat efficiency of the heater is greatly improved, and finally the purpose of reducing the power consumption of the single crystal furnace is achieved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a thermal insulation barrel for a single crystal furnace in a closed state of a charging portion according to an embodiment of the present utility model.

In the figure: 1. a silicon solution; 2. a heater; 3. a heat preservation cylinder; 4. a first heat-retaining layer; 5. an empty region; 6. a reflection cylinder; 7. a second heat-insulating layer; 8. a positioning ring; 9. a protrusion.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the single crystal growth process, in order to enable the heat provided by the heater 2 to be transmitted to the silicon solution 1 as much as possible, and improve the effective heating efficiency, the heat insulation barrel is designed and installed on the outer layer of the heater 2 to inhibit heat from being transmitted outwards, and the heat insulation barrel for the single crystal furnace comprises a first barrel and a second barrel as shown in fig. 1, wherein the first barrel is covered on the outer side of the heater 2 of the single crystal furnace, and the first barrel is used for heat insulation. The second cylinder covers the outside of the first cylinder, an empty area 5 is arranged between the second cylinder and the first cylinder, and the second cylinder is used for reflecting the heat radiation generated by the heater 2.

The first cylinder body of this embodiment is covered outside the heater 2 of the single crystal furnace, can keep warm to the heater 2, reduces the heat loss that the heat conduction produced, and the second cylinder body is covered outside first cylinder body, can reflect the heat radiation that the heater 2 produced, can further promote the thermal insulation performance of single crystal furnace, makes the thermal efficiency of heater 2 obtain improving by a wide margin, finally reaches the purpose that reduces the single crystal furnace power consumption.

Further, the first barrel comprises a heat preservation barrel 3 and a first heat preservation layer 4, the heat preservation barrel 3 is covered on the outer side of the heater 2, and the first heat preservation layer 4 is arranged on the outer side wall of the heat preservation barrel 3. Optionally, the heat-preserving cylinder 3 is a carbon-carbon or graphite heat-preserving cylinder. Optionally, the first insulation layer 4 adopts 1-5 layers of carbon fiber insulation felt. The carbon fiber insulation blanket has low thermal conductivity.

Further, the width of the empty region 5 is 20-50mm. Further, the second cylinder comprises a reflecting cylinder 6 and a second heat-insulating layer 7, the reflecting cylinder 6 is covered on the outer side of the first cylinder, and the second heat-insulating layer 7 is arranged on the outer side wall of the reflecting cylinder 6. Alternatively, the reflective cylinder 6 employs a molybdenum cylinder or a quartz cylinder in combination with molybdenum or quartz material characteristics. The surface roughness Ra of the molybdenum cylinder or the quartz cylinder is less than or equal to 0.4. The thickness of the molybdenum cylinder is less than or equal to 1mm, or the thickness of the quartz cylinder is less than or equal to 8mm. Optionally, the second insulation layer 7 adopts 1-10 layers of carbon fiber insulation felts. The thickness of the second insulation layer 7 is greater than the thickness of the first insulation layer 4 in this embodiment.

Further, a positioning ring 8 is arranged below the first heat insulation layer 4 and the reflection cylinder 6, and an upward protrusion 9 is arranged on the positioning ring 8 corresponding to the empty area 5. The bulge 9 of the positioning ring 8 is used for positioning the reflecting cylinder, so that the size of the empty area 5 is ensured, the outer side wall of the reflecting cylinder is wrapped by the second heat preservation layer, and meanwhile, the outer side wall of the positioning ring is wrapped, and the inner side wall of the positioning ring is attached to the outer side wall of the heat preservation cylinder. The single crystal furnace is in a static state in the heating process of the heater, and the heat preservation barrel for the single crystal furnace is directly placed outside the heater.

The working procedure of this embodiment is: the heat-insulating cylinder 3 is externally provided with the first heat-insulating layer 4 with low heat conduction to reduce heat loss caused by heat conduction, but the heat radiation penetrating power generated by the heater 2 at the temperature of 1300-1900 ℃ is relatively strong, and the reflecting cylinder 6 and the second heat-insulating layer 7 are designed according to the heat loss characteristics of the single crystal furnace and the characteristics of molybdenum or quartz materials, so that the heat radiation can be reflected to reduce the heat loss, the heat-insulating performance of the single crystal furnace can be improved, the heat efficiency of a heating body is greatly improved, and finally the aim of reducing the power consumption of the single crystal furnace is fulfilled.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present utility model can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A thermal insulation barrel for a single crystal furnace, comprising:

2. The heat preservation cylinder for a single crystal furnace according to claim 1, wherein the first cylinder body comprises a heat preservation cylinder and a first heat preservation layer, the heat preservation cylinder is covered on the outer side of the heater, and the first heat preservation layer is arranged on the outer side wall of the heat preservation cylinder.

3. The heat preservation cylinder for a single crystal furnace according to claim 2, wherein the heat preservation cylinder is a carbon-carbon or graphite heat preservation cylinder.

4. A thermal block for a single crystal furnace according to any one of claims 1-3, wherein the width of the void region is 20-50mm.

5. The heat preservation cylinder for a single crystal furnace according to claim 2, wherein the second cylinder comprises a reflecting cylinder and a second heat preservation layer, the reflecting cylinder is covered on the outer side of the first cylinder, and the second heat preservation layer is arranged on the outer side wall of the reflecting cylinder.

6. The heat preservation cylinder for a single crystal furnace according to claim 5, wherein the reflection cylinder is a molybdenum cylinder or a quartz cylinder.

7. The heat preservation cylinder for a single crystal furnace according to claim 6, wherein the surface roughness Ra of the molybdenum cylinder or the quartz cylinder is equal to or less than 0.4.

8. The thermal cylinder for a single crystal furnace according to claim 6 or 7, wherein the thickness of the molybdenum cylinder is less than or equal to 1mm, or the thickness of the quartz cylinder is less than or equal to 8mm.

9. The heat preservation cylinder for a single crystal furnace according to claim 5, wherein the first heat preservation layer and/or the second heat preservation layer adopts carbon fiber heat preservation felt.

10. The heat preservation cylinder for a single crystal furnace according to claim 5, wherein a positioning ring is arranged below the first heat preservation layer and the reflection cylinder, and the positioning ring is provided with an upward protrusion corresponding to the empty area.