CN216998142U

CN216998142U - Heating device for be used for sheet glass shaping

Info

Publication number: CN216998142U
Application number: CN202120273969.1U
Authority: CN
Inventors: 李淼; 王刚; 徐莉华
Original assignee: Irico Display Devices Co Ltd
Current assignee: Irico Display Devices Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-07-19
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a heating device for forming plate glass, and belongs to the technical field of uniform heating of muffle furnaces. The device comprises an inner heater arranged in a muffle furnace, wherein the inner heater is arranged close to a flat glass forming device, and an outer heater is arranged between the inner heater and a muffle furnace chamber; the arrangement direction of the inner layer heaters is vertical to the flow direction of the glass flow on the plate glass forming equipment, and the arrangement direction of the outer layer heaters is parallel to the flow direction of the glass flow on the plate glass forming equipment; wherein, the inner heater includes the first heater and the second heater that the segmentation set up. The heating device for forming the plate glass is used in cooperation with the muffle furnace through simple and effective structural design, and can effectively form a uniform temperature field around a glass flow and ensure uniform distribution of temperature hot spots.

Description

Heating device for be used for sheet glass shaping

Technical Field

The utility model belongs to the technical field of uniform heating of muffle furnaces, and relates to a heating device for forming plate glass.

Background

The flat glass is sensitive to the temperature of the atmosphere around the forming equipment in the forming process, the viscosity of the glass is different due to non-uniform temperature distribution, and various defects such as stripe defects, thickness non-uniform defects, stress defects and the like are easy to occur in the glass forming process.

The temperature distribution of the forming equipment for sheet glass is a complex temperature environment including the heat from the glass flow and the heat from the heaters, and it is difficult to generate a uniform temperature field around the glass flow under the combined action, especially in the case of only a small number of heaters, where the entire temperature hot spot is almost at the physical center of the entire forming apparatus.

With the demand for improved glass quality, it is crucial to ensure an effective uniform temperature field in the forming apparatus.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a heating device for sheet glass forming, which is capable of providing a uniform temperature field.

In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:

the utility model discloses a heating device for forming plate glass, which comprises an inner heater arranged in a muffle furnace, wherein the inner heater is arranged close to plate glass forming equipment;

the arrangement direction of the inner layer heaters is vertical to the flow direction of the glass flow on the plate glass forming equipment, and the arrangement direction of the outer layer heaters is parallel to the flow direction of the glass flow on the plate glass forming equipment;

wherein, the inner heater includes the first heater and the second heater of segmentation setting.

Preferably, the outer heater comprises a plurality of heating rods, the distance between the heating rods being in the range of 100mm to 500 mm.

Preferably, the heating power of the heating rod in the outer layer heater is 5kW to 30 kW.

Preferably, the inner heater comprises a plurality of heating rods, and the distance between the heating rods ranges from 100mm to 500 mm.

Further preferably, the heating power of the heating rod in the inner heater is 5kW to 30 kW.

Preferably, the heating rods of the inner heater are not in the same plane.

Preferably, the outer heater is located at a distance in the range of 50mm to 1500mm from the glass stream.

Further preferably, the outer heater is at a distance in the range of 50mm to 1000mm from the glass stream.

Further, the distance between the inner heater and the glass flow ranges from 50mm to 500 mm.

Further, the distance between the first heater and the second heater ranges from 50mm to 200 mm.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model discloses a heating device for forming plate glass, which is characterized in that a heating network structure can be formed outside plate glass forming equipment by arranging an inner-layer heater with the arrangement direction perpendicular to the flow direction of glass flow and an inner-layer heater with the arrangement direction parallel to the flow direction of the glass flow in a muffle furnace, so that heating points are ensured to be in a distributed state; the inner layer heaters are designed into the first heaters and the second heaters which are arranged in a segmented mode, so that a non-single temperature field structure outside the plate glass forming equipment can be realized, and the defects that the central position of the temperature field is concentrated and the processing condition of uniform heat source radiation cannot be provided for a plate glass area in the existing plate glass forming process can be further avoided. Therefore, the heating device for forming the plate glass is used by matching with the muffle furnace through a simple and effective structural design, and can effectively form a uniform temperature field around the glass flow and ensure the uniform distribution of temperature hot spots.

Furthermore, the heating rod of the inner heater is adjusted to be not in the same plane, so that the distance between the heating rod of the inner heater and the surface of the glass flow outside the plate glass forming equipment is adjusted, the adjustment of the side angle of the plate glass forming equipment is realized, and the heat supply effect of the inner heater to the glass flow is improved.

Further, the heating power of the heater is adjusted to meet the requirement of forming a uniform temperature field.

Furthermore, according to the structure size of different molding equipment, the spacing distance of the heaters can be adjusted along with the change of the structure, the use cost and the temperature control requirement are considered, the number and the spacing distance of the heaters are optimally distributed according to simulation analysis calculation of a temperature field, and the process design requirement is met.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the heating apparatus in a muffle furnace of the present invention.

Wherein: 1-a flat glass forming device; 2-inner heater; 3-furnace inner cavity structure; 4-forming equipment atmosphere space; 5-outer heater.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in other sequences than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The utility model is described in further detail below with reference to the accompanying drawings:

the present invention is designed to solve the problem that the conventional flat glass forming apparatus applied in a muffle furnace cannot effectively ensure a uniform temperature field, and the technical contents of the present invention will be described with reference to fig. 1 and 2.

Referring to fig. 2, the heating device for forming the plate glass according to the present invention comprises an inner heater 2 disposed in a muffle furnace, wherein the inner heater 2 is disposed adjacent to a plate glass forming apparatus 1, and an outer heater 5 is disposed between the inner heater 2 and the muffle furnace chamber; the arrangement direction of the inner layer heaters 2 is vertical to the flow direction of the glass flow on the plate glass forming equipment, and the arrangement direction of the outer layer heaters 5 is parallel to the flow direction of the glass flow on the plate glass forming equipment; wherein the inner heater 2 includes a first heater and a second heater which are arranged in segments.

Referring to fig. 1, a muffle furnace, a flat glass forming device 1 and the heating device for flat glass forming constitute a system of a temperature control device in a muffle furnace chamber for flat glass forming, wherein, a furnace inner cavity structure 3 of the muffle furnace is designed according to the shape of the flat glass forming device, so as to ensure that a forming device atmosphere space 4 is formed between the inner wall of the furnace chamber of the muffle furnace and the flat glass forming device 1, and the distance (B) between the inner wall of the furnace chamber of the muffle furnace and the flat glass forming device 1 is kept within the range of 5mm to 1200 mm. Preferably, the distance (B) between the inner wall of the furnace chamber and the sheet glass forming apparatus 1 is maintained in the range of 100mm to 1000 mm.

In the above heating apparatus for sheet glass forming, the inner heaters 2 and the outer heaters 5 are distributed around the sheet glass forming device 1 in a net structure (the arrangement direction of the outer heaters 5 is along the glass flow direction, and the inner heaters 2 are perpendicular to the glass flow direction).

Wherein the distance (A) of the outer heater 5 from the glass stream is in the range of 50mm to 1500 mm.

Particularly preferably, the distance (A) of the outer heater 5 from the glass stream is in the range of 50mm to 1000 mm.

The inner heaters 2, which are arranged perpendicularly to the glass flow direction, are arranged at a distance adjusted according to the outer shape of the flat glass forming apparatus 1, and are not in one plane.

Wherein the distance between the inner heater 2 and the glass flow is in the range of 50mm to 500 mm.

The inner heater 2 comprises a plurality of heating rods, and the distance between the heating rods of the inner heater 2 ranges from 100mm to 500 mm; the heating power of the heating rod in the inner heater 2 is 5 kW-30 kW, and the current and voltage can be specifically controlled according to the temperature field requirement.

Specifically, in the specific embodiment of the present invention, the distance between the heating rods of the outer heater 5 ranges from 100mm to 500 mm; the heating power of the heating rod in the outer heater 5 is 5 kW-30 kW, and the heating rod can be specifically controlled by current and voltage according to the temperature field requirement.

Specifically, in the specific embodiment of the present invention, the heating rod may be selected from a conventional heating rod, a U-shaped heating rod, a W-shaped heating rod, and the like.

The arrangement mode of the heaters can be arranged at equal intervals, the equal-interval value of the heaters is not more than the length distance of the heating range of the heaters, and the heating power of each heater can be adjusted at will.

The arrangement mode of the heaters can ensure that the distance between the heaters is not more than the length of the heating range of the heaters when the heaters are arranged at unequal intervals, and the heating power of each heater can be adjusted at will.

Wherein the distance between the first heater and the second heater ranges from 50mm to 200 mm.

In practice, the inner heater 2 and the outer heater 5 may be specifically adjusted, and the specific positions may be changed according to the process conditions.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. A heating device for forming plate glass is characterized by comprising an inner heater (2) arranged in a muffle furnace, wherein the inner heater (2) is arranged close to plate glass forming equipment (1), and an outer heater (5) is arranged between the inner heater (2) and the muffle furnace chamber;

the arrangement direction of the inner layer heaters (2) is vertical to the flow direction of the glass flow on the plate glass forming equipment (1), and the arrangement direction of the outer layer heaters (5) is parallel to the flow direction of the glass flow on the plate glass forming equipment (1); the inner heater (2) and the outer heater (5) comprise a plurality of heating rods, the distance between the heating rods ranges from 100mm to 500mm, and the heating power of the heating rods is 5 kW-30 kW;

wherein, the inner heater (2) comprises a first heater and a second heater which are arranged in segments.

2. A heating device for sheet glass forming according to claim 1, characterized in that the heating rods of the inner heater (2) are not in the same plane.

3. A heating device for sheet glass forming according to claim 1, characterised in that the outer heater (5) is at a distance from the glass flow in the range 50mm to 1500 mm.

4. A heating device for sheet glass forming according to claim 1, characterized in that the distance of the outer heater (5) from the glass flow is in the range of 50mm to 1000 mm.

5. A heating device for sheet glass forming according to claim 1, characterized in that the distance of the inner heater (2) from the glass flow is in the range of 50mm to 500 mm.

6. A heating apparatus for forming sheet glass according to claim 1, wherein the distance between the first heater and the second heater is in the range of 50mm to 200 mm.