Hollow combined bottom curing felt capable of improving heat retaining property

Abstract

The utility model provides a hollow combined bottom solidified felt capable of improving heat retaining property, which comprises a solidified felt body, the solidified felt body comprises a first solidified felt layer and a second solidified felt layer, the outer side of the circumference of the first solidified felt layer is connected with the outer side of the circumference of the second solidified felt layer to form a hollow solidified felt body with a gap in the center, and the hollow solidified felt body is provided with a hollow hole. The outer side of the circumference of the first curing felt layer and the outer side of the circumference of the second curing felt layer are in flexible connection through a transition soft felt, and the gap is filled with a heat preservation soft felt.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal furnaces, and specifically designs a hollow combined bottom curing felt with improved thermal insulation performance. Background Art

[0002] In the process of pulling single crystals, the thermal insulation of the thermal field at the bottom of the single crystal furnace has a certain influence on the power of pulling single crystals. At present, the bottom of the single crystal furnace uses a bottom curing felt to insulate the bottom thermal field. The bottom curing felt generally uses two upper and lower curing felts for hard contact to avoid easy damage to the curing felts, thus failing to achieve the thermal insulation effect. However, the bottom curing felts are all designed to take into account the easy heat leakage between the two hard-contact curing felts, resulting in poor thermal insulation effect of the bottom curing felts. Summary of the invention

[0003] The utility model aims to provide a hollow combined bottom curing felt with improved thermal insulation performance. Soft felt is filled in the hollow bottom curing felt in a soft contact manner, which can not only improve the thermal insulation effect of the bottom curing felt, but also allow the curing felt to be wrapped by the soft felt, thereby achieving better protection, longer service life and better thermal insulation effect.

[0004] In order to solve the above technical problems, the utility model adopts the following solutions:

[0005] A hollow combined bottom cured felt with improved thermal insulation performance comprises a cured felt body, wherein the cured felt body comprises a first cured felt layer and a second cured felt layer, wherein the circumferential outer sides of the first cured felt layer and the circumferential outer sides of the second cured felt layer are connected to form a hollow cured felt body with a gap in the center, wherein the circumferential outer sides of the first cured felt layer and the circumferential outer sides of the second cured felt layer are softly connected via a transition soft felt, and the gap is filled with thermal insulation soft felt.

[0006] Furthermore, the first cured felt layer and the second cured felt layer both include a cover surface, the cover surface is a circular structure, and a corresponding support portion is provided on the outer side of the circular circumference, the support portion is an annular structure, and when the first cured felt layer and the second cured felt layer are connected, a transition soft felt is provided between the two support portions, so that the first cured felt layer and the second cured felt layer are softly connected through the transition soft felt.

[0007] Furthermore, a circular hole is opened in the center of the transition soft felt, presenting an annular structure, and the circular hole is connected with the thermal insulation soft felt so that the thermal insulation soft felt is filled between the two cover surfaces, and the radius of the circular hole is less than or equal to the radius of the cover surface.

[0008] Furthermore, the first cured felt layer and the second cured felt layer are respectively provided with a plurality of corresponding electrode holes extending longitudinally therethrough, and the thermal insulation soft felt is provided with through holes corresponding to the electrode holes.

[0009] Furthermore, the thermal insulation soft felt includes an upper thermal insulation soft felt layer and a lower thermal insulation soft felt layer, the structure of the transition soft felt is circular, and the central axis of the circle is located on the central axis of the cured felt body, the outer side of the circle circumference passes through between the first cured felt layer and the second cured felt layer and extends outside the cured felt body, the upper thermal insulation soft felt layer is filled between the transition soft felt and the first cured felt layer, and the lower thermal insulation soft felt layer is filled between the transition soft felt and the second cured felt layer.

[0010] Furthermore, the first cured felt layer and the second cured felt layer are respectively provided with a corresponding number of longitudinally penetrating electrode holes, and the transition soft felt, the upper thermal insulation soft felt layer and the lower thermal insulation soft felt layer are all provided with through holes corresponding to the electrode holes.

[0011] Furthermore, the electrode hole contains an electrode whose outer diameter is smaller than the inner diameter of the electrode hole, and the area between the electrode hole and the electrode is filled with a filler.

[0012] Furthermore, the filler is a filler with low thermal conductivity and high temperature resistance, and the height of the filler is lower than the height of the corresponding first cured felt layer or second cured felt layer.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a hollow combined bottom curing felt with improved thermal insulation performance. The soft felt is filled in the hollow bottom curing felt in a soft contact manner, which can not only improve the thermal insulation effect of the bottom curing felt, but also allow the curing felt to be wrapped by the soft felt, thereby achieving better protection, longer service life and better thermal insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the transition soft felt of Example 1 of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the hollow combined bottom curing felt of Example 1 of the utility model;

[0017] Figure 3 This is a schematic structural diagram of a hollow combined bottom curing felt according to Example 1 of the utility model;

[0018] Figure 4 This is a schematic structural diagram of the transition soft felt of Example 2 of the utility model;

[0019] Explanation of the accompanying drawings: 1-first cured felt layer, 2-second cured felt layer, 3-electrode hole, 4-transition soft felt, 5-thermal insulation soft felt, 6-cover surface, 7-support part. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the implementation methods of the present invention are not limited thereto.

[0021] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The present invention is described in detail below with reference to the accompanying drawings and in combination with embodiments:

[0024] Example 1

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, a hollow combined bottom cured felt with improved thermal insulation performance includes a cured felt body, wherein the cured felt body includes a first cured felt layer 1 and a second cured felt layer 2, wherein the circumferential outer side of the first cured felt layer 1 and the circumferential outer side of the second cured felt layer 2 are connected to form a hollow cured felt body with a gap in the center, wherein the circumferential outer side of the first cured felt layer 1 and the circumferential outer side of the second cured felt layer 2 are softly connected via a transition soft felt 4, and the gap is filled with a thermal insulation soft felt 5.

[0026] Specifically, in order to improve the thermal insulation effect of the hollow combined bottom cured felt, the utility model chooses to fill the hollow combined bottom cured felt with a thermal insulation soft felt 5, so that the cured felt wraps the soft felt inside, which can not only effectively protect the soft felt and increase its service life, but also improve the thermal insulation effect of the bottom cured felt. In addition, in another embodiment, it can also be considered to design the transition soft felt 4 and the thermal insulation soft felt 5 as an integrated whole. The transition soft felt 4 mainly changes the hard connection between the first cured felt layer 1 and the second cured felt layer 2 into a soft connection, which can ensure that there is no heat leakage between the two, so that the thermal insulation effect is better, and the thermal insulation soft felt 5 ensures the thermal insulation of the bottom cured felt. Designing the transition soft felt 4 and the thermal insulation soft felt 5 as an integrated whole can reduce the exposed gap of the bottom cured felt, so the thermal insulation effect is better.

[0027] Preferably, the first cured felt layer 1 and the second cured felt layer 2 both include a cover plate surface 6, the cover plate surface 6 is a circular structure, and a corresponding support portion 7 is provided outside the circular circumference, the support portion 7 is an annular structure, when the first cured felt layer 1 and the second cured felt layer 2 are connected, a transition soft felt 4 is provided between the two support portions 7, so that the first cured felt layer 1 and the second cured felt layer 2 are softly connected through the transition soft felt 4. The purpose is to avoid hard contact between the first cured felt layer 1 and the second cured felt layer 2 through the transition soft felt 4, change the hard contact into soft contact, avoid heat leakage between the first cured felt layer 1 and the second cured felt layer 2, and thus improve the thermal insulation of the bottom cured felt.

[0028] Preferably, a circular hole is opened in the center of the transition soft felt 4, presenting an annular structure, and a thermal insulation soft felt 5 is connected in the circular hole, so that the thermal insulation soft felt 5 is filled between the two cover surfaces 6, and the radius of the circular hole is less than or equal to the radius of the cover surface 6. The purpose is to fill the thermal insulation soft felt 5 in the hollow combined bottom curing felt so that the curing felt wraps the soft felt inside, which can not only effectively protect the soft felt and increase its service life, but also improve the thermal insulation effect of the bottom curing felt.

[0029] Preferably, the first cured felt layer 1 and the second cured felt layer 2 are respectively provided with a plurality of corresponding electrode holes 3 extending longitudinally therethrough, and the thermal insulation soft felt 5 is provided with through holes corresponding to the electrode holes 3 .

[0030] Preferably, the electrode hole 3 has an electrode with an outer diameter smaller than the inner diameter of the electrode hole 3, and the area between the electrode hole 3 and the electrode is filled with a filler. The electrode hole 3 is used to pass through the exhaust hole on the single crystal furnace, and a filler for insulation is generally provided in the electrode hole 3. The filler is filled between the electrode hole 3 and the electrode. The filler is used to avoid virtual connection and sparking between the electrode and the curing felt. The filler generally adopts an insulating material such as quartz sand or quartz glass cup.

[0031] Preferably, the filler is a filler with low thermal conductivity and high temperature resistance, and the height of the filler is lower than the height of the corresponding first cured felt layer 1 or second cured felt layer 2 .

[0032] Example 2

[0033] Based on Example 1, Figure 4 As shown, in this embodiment, the thermal insulation soft felt 5 includes an upper thermal insulation soft felt layer 5 and a lower thermal insulation soft felt layer 5, the transition soft felt 4 has a circular structure, and the central axis of the circle is located on the central axis of the cured felt body, the outer circumference of the circle passes through between the first cured felt layer 1 and the second cured felt layer 2 and extends outside the cured felt body, the upper thermal insulation soft felt layer 5 is filled between the transition soft felt 4 and the first cured felt layer 1, and the lower thermal insulation soft felt layer 5 is filled between the transition soft felt 4 and the second cured felt layer 2. The purpose is to set the transition soft felt 4 to a circular structure, so that the transition soft felt 4 can pass through the first cured felt layer 1 and the second cured felt layer 2, so that the thermal insulation soft felt 5 can adopt a multi-layer design, and an upper thermal insulation soft felt 5 layer is filled between the transition soft felt 4 and the first cured felt layer 1, and a lower thermal insulation soft felt 5 layer is filled between the transition soft felt 4 and the second cured felt layer 2. The upper thermal insulation soft felt 5 layer and the lower thermal insulation soft felt 5 layer can be thermal insulation soft felt 5 of the same thickness, which is 10 mm. Based on the layered design, the staff can adjust the thermal insulation by adjusting the number of layers of the thermal insulation soft felt 5, thereby reducing the heat at the bottom of the crucible and reducing the precipitation of oxygen at the bottom of the crucible, thereby achieving the effect of reducing oxygen.

[0034] Preferably, the first cured felt layer 1 and the second cured felt layer 2 are respectively provided with a corresponding plurality of longitudinally penetrating electrode holes 3, and the transition soft felt 4, the upper thermal insulation soft felt 5 layer and the lower thermal insulation soft felt 5 layer are all provided with through holes corresponding to the electrode holes 3.

[0035] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A hollow combined bottom curing felt for improving thermal insulation, characterized in that: The cured felt body comprises a first cured felt layer (1) and a second cured felt layer (2); the circumferential outer side of the first cured felt layer (1) and the circumferential outer side of the second cured felt layer (2) are connected to form a hollow cured felt body with a gap in the center; the circumferential outer side of the first cured felt layer (1) and the circumferential outer side of the second cured felt layer (2) are softly connected via a transition soft felt (4), and the gap is filled with a thermal insulation soft felt (5).

2. A hollow combined bottom curing felt for improving thermal insulation according to claim 1, characterized in that: The first cured felt layer (1) and the second cured felt layer (2) both comprise a cover plate surface (6), the cover plate surface (6) being a circular structure, and a corresponding support portion (7) being arranged outside the circumference of the circle, the support portion (7) being an annular structure, and when the first cured felt layer (1) and the second cured felt layer (2) are connected, a transition soft felt (4) is arranged between the two support portions (7), so that the first cured felt layer (1) and the second cured felt layer (2) are softly connected via the transition soft felt (4).

3. A hollow combined bottom curing felt for improving thermal insulation according to claim 2, characterized in that: The transition soft felt (4) has a circular hole at its center, presenting an annular structure, and the circular hole is connected to the thermal insulation soft felt (5), so that the thermal insulation soft felt (5) is filled between the two cover plate surfaces (6), and the radius of the circular hole is less than or equal to the radius of the cover plate surface (6).

4. A hollow combined bottom curing felt for improving thermal insulation according to claim 3, characterized in that: The first cured felt layer (1) and the second cured felt layer (2) are respectively provided with a plurality of corresponding electrode holes (3) extending longitudinally therethrough, and the thermal insulation soft felt (5) is provided with through holes corresponding to the electrode holes (3).

5. The hollow combined bottom curing felt for improving thermal insulation according to claim 1, characterized in that: The thermal insulation soft felt (5) comprises an upper thermal insulation soft felt (5) layer and a lower thermal insulation soft felt (5) layer. The transition soft felt (4) has a circular structure, and the central axis of the circle is located on the central axis of the cured felt body. The outer circumference of the circle passes through between the first cured felt layer (1) and the second cured felt layer (2) and extends outside the cured felt body. The upper thermal insulation soft felt (5) layer is filled between the transition soft felt (4) and the first cured felt layer (1), and the lower thermal insulation soft felt (5) layer is filled between the transition soft felt (4) and the second cured felt layer (2).

6. A hollow combined bottom curing felt for improving thermal insulation according to claim 5, characterized in that: The first cured felt layer (1) and the second cured felt layer (2) are respectively provided with a plurality of corresponding longitudinally penetrating electrode holes (3), and the transition soft felt (4), the upper thermal insulation soft felt (5) layer and the lower thermal insulation soft felt (5) layer are all provided with through holes corresponding to the electrode holes (3).

7. A hollow combined bottom curing felt for improving thermal insulation according to claim 4 or 6, characterized in that: An electrode having an outer diameter smaller than an inner diameter of the electrode hole (3) is provided in the electrode hole (3), and a filler is filled in the area between the electrode hole (3) and the electrode.

8. The hollow combined bottom curing felt for improving thermal insulation according to claim 7, characterized in that: The filler is a filler with a low thermal conductivity and high temperature resistance, and the height of the filler is lower than the height of the corresponding first cured felt layer (1) or second cured felt layer (2).

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