Convection type glass heating furnace
By optimizing the channel shape and position of the convection glass heating furnace, the problem of heat loss caused by the gap between the fan and the insulation layer was solved, achieving good sealing and insulation performance and reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-07
AI Technical Summary
In convection glass heating furnaces, the gap between the fan casing and the insulation layer causes a large amount of heat loss, resulting in poor sealing, increased energy consumption, and reduced insulation performance.
The channel shape on the casing and insulation layer is optimized to form a natural seal. The inclined frustum or prismatic channel wall is in close contact with the casing, and openings are set in the channel wall to reduce heat transfer. The fan flange installation position is moved to the inside of the furnace body to maintain a consistent insulation layer thickness.
It achieved a good sealing effect, reduced the energy consumption of the heating furnace, improved the heat preservation performance, and maintained the consistency of heat preservation performance in all areas of the heating furnace.
Smart Images
Figure CN224091788U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of glass heating furnace technology, and in particular to a convection glass heating furnace. Background Technology
[0002] In the glass processing industry, glass often needs to be heated and subjected to other treatments to obtain glass with different mechanical properties. In this process, a convection glass heating furnace is typically used to provide the heat source for the glass. The convection glass heating furnace utilizes gas convection heating technology, blowing gas onto the glass surface, and heating the glass sheet is achieved through convective heat exchange between the gas and the glass plate.
[0003] As attached Figure 1 and attached Figure 2 As shown, a convection glass heating furnace typically includes a furnace body 1, an insulation layer 2 disposed on the inner wall of the furnace body 1, and a fan 3 disposed on the top, bottom, and / or side walls of the furnace body 1. (See attached image.) Figure 1 Taking the indicated location as an example, in the vertical direction, the casing 33 of the fan 3 is typically a cylindrical straight-tube structure. During actual installation, since the impeller 32 of the fan 3 needs to extend into the furnace body, a channel matching the size and shape of the casing 33 needs to be opened in the insulation layer 2. Because the casing 33 is usually formed by rolling steel plates, its processing precision is not high. After the casing 33 is installed on the heating furnace, its temperature is high, and it will experience thermal expansion and contraction during furnace operation. Therefore, the diameter of the channel opened in the insulation layer 2 must be larger than the diameter of the casing 33 to create a larger gap between the casing 33 and the channel opened in the insulation layer 2, allowing the fan 3 to be smoothly installed onto the furnace body 1. After the casing 33 is completely inserted into the furnace body 1, to prevent a large amount of heat loss from the furnace body through the gap between the outer wall of the casing 33 and the insulation layer 2, a sealing element 4 is usually installed at this gap for sealing.
[0004] However, due to the large gap between the casing 33 and the insulation layer 2, and the poor stability of the seal 4 caused by the high temperature environment, the sealing effect of the seal 4 is poor. As a result, a large amount of heat is lost from the gap during the operation of the heating furnace, which increases energy consumption and reduces the insulation performance of the heating furnace. Utility Model Content
[0005] To address the problems existing in the prior art, where the gap between the channels in the insulation layer of the convection glass heating furnace and the casing of the fan causes a large amount of heat loss from the furnace, the purpose of this utility model is to provide a convection glass heating furnace that optimizes the shape of the channels in the casing and insulation layer, so that the frustum-shaped casing and the channels in the insulation layer form a natural seal, eliminating the need for additional sealing components. This provides advantages such as excellent sealing effect, good furnace insulation performance, and reduced furnace energy consumption.
[0006] To achieve the above objectives, the technical solution of this utility model is as follows:
[0007] A convection glass heating furnace includes a furnace body, an insulation layer, and a fan. The insulation layer is disposed on the inner wall of the furnace body. The fan includes a motor, a casing, and an impeller. The motor is located on the outside of the furnace body, and the impeller is located on the inside of the furnace body. The casing penetrates the furnace body and the insulation layer. A first channel wall is provided on the furnace body. The first channel wall is inclined, and its cross-sectional area gradually decreases in the direction from the outer wall of the furnace body to the insulation layer. The shape and size of the casing are adapted to the first channel wall.
[0008] The present invention is further configured such that the slope of the housing is consistent with the slope of the first channel wall.
[0009] The present invention is further configured such that the first channel wall is in the shape of a frustum or a pyramid.
[0010] The present invention is further configured such that: a plurality of openings are provided on the wall of the first channel.
[0011] The present invention is further configured such that: the fan also includes a flange located between the motor and the casing, and the furnace body is also provided with a second channel wall for installing the flange, the internal space of the first channel wall and the second channel wall are connected, and the second channel wall is located between the first channel wall and the inner wall of the furnace body.
[0012] The present invention is further configured such that the wall of the second channel is cylindrical.
[0013] The present invention is further configured such that the depth of the second channel wall is not less than 50 mm.
[0014] The present invention is further configured such that the depth of the second channel wall does not exceed 150mm.
[0015] The present invention is further configured such that: a plurality of openings are provided on the wall of the second channel.
[0016] In summary, the beneficial effects achieved by this utility model are as follows:
[0017] (1) The first channel wall on both the casing and the furnace body is in the shape of a frustum or a pyramid, and the cross-sectional area of the first channel wall gradually decreases from the outside of the furnace body to the inside of the furnace body, thus forming an inclined contact line between the casing and the first channel wall. During the installation of the blower, this inclined contact line can naturally form a seal with good sealing effect, ensuring the heat preservation performance of the heating furnace, reducing the energy consumption of the heating furnace, eliminating the need for additional sealing components, and improving the stability of the sealing structure; at the same time, the first channel wall can provide guidance during the installation of the blower, facilitating the installation of the blower;
[0018] (2) The second channel wall is used to install the flange of the fan, so that the installation position of the flange can be moved to the inside of the furnace body, and the thickness of the insulation layer at the fan installation location is the sum of the depths of the first channel wall and the second channel wall. This avoids the fact that the thickness of the insulation layer at the fan installation location is lower than the thickness of the insulation layer at other locations in the furnace body due to the limitation of the casing length. This ultimately achieves the effect of improving the insulation performance of the heating furnace and maintaining the consistency of insulation performance between different areas of the heating furnace.
[0019] (3) The openings on the first and second channel walls can reduce the heat transfer rate at the first and second channel walls, reduce heat loss, and thus improve the heat preservation performance of the heating furnace. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0021] Figure 1 This is a schematic diagram of the structure of a convection glass heating furnace in the background art;
[0022] Figure 2 for Figure 1 A magnified view of part A in the middle;
[0023] Figure 3 This is a schematic diagram of the convection glass heating furnace in this utility model;
[0024] Figure 4 This is a structural diagram showing the connection point between the fan and the insulation layer;
[0025] Figure 5 This is a schematic diagram of the structure with openings in the first and second channel walls.
[0026] In the diagram: 1. Furnace body; 11. First channel wall; 12. Second channel wall; 2. Insulation layer; 3. Fan; 31. Motor; 32. Impeller; 33. Casing; 34. Flange; 4. Seal. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0028] It should be noted that the embodiments and features involved in the embodiments of this utility model can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0029] As attached Figure 3-4 As shown, a convection glass heating furnace includes a furnace body 1, an insulation layer 2, and a fan 3.
[0030] The insulation layer 2 is installed on and surrounds the inner wall of the furnace body 1. The insulation layer 2 can be composed of one or more of the following: insulation cotton, aluminum silicate ceramic fiber board, ceramic fiber blanket, calcium silicate board, and aerogel fiber felt. The main function of the insulation layer 2 is heat insulation and heat preservation.
[0031] The blower 3 includes a motor 31, a casing 33, an impeller 32, and a flange 34. The motor 31 is located on the outside of the furnace body 1, and the impeller 32 is located on the inside of the furnace body 1. The output shaft of the motor 31 drives the impeller 32 to rotate. The casing 33 passes through the furnace body 1 and the insulation layer 2, and the flange 34 is located between the motor 31 and the casing 33.
[0032] In this invention, a first channel wall 11 and a second channel wall 12 are provided on the furnace body 1. Both the first channel wall 11 and the second channel wall 12 are made of metal. The second channel wall 12 is fixedly connected to the furnace body 1, and the first channel wall 11 is fixedly connected to the second channel wall 12.
[0033] The first channel wall 11 is inclined, and the cross-sectional area of the first channel wall 11 gradually decreases in the direction from the outer wall of the furnace body 1 to the inner wall of the insulation layer 2. For example, in the attached... Figure 3 In the direction shown, the first channel wall 11 is in the shape of an inverted frustum or truncated pyramid, that is, the cross-sectional area of the top of the first channel wall 11 is greater than the cross-sectional area of its bottom.
[0034] In this embodiment, the first channel wall 11 is a frustum-shaped annular shell structure with openings at both the top and bottom. During the installation of the fan 3, the casing 33 passes through the interior of the first channel wall 11, and the first channel wall 11 is located between the insulation layer 2 and the casing 33.
[0035] The housing 33 is also frustum-shaped, and its shape and size are adapted to the first channel wall 11, allowing it to make tight contact with the first channel wall 11 after passing through it. The inclined contact line between the housing 33 and the first channel wall 11 naturally forms a good seal. Simultaneously, the inclined first channel wall 11 provides guidance for the fan 3 during installation, facilitating its installation.
[0036] Preferably, the slope of the housing 33 is consistent with the slope of the first channel wall 11, so as to further ensure that a good seal is formed after the two come into contact.
[0037] Specifically, as shown in the appendix Figure 5 As shown, several small holes are also provided on the first channel wall 11. The holes can be arranged regularly or irregularly, and the holes can be set to any shape. In this embodiment, the holes are circular. The arrangement of the holes can reduce the heat transfer rate at the first channel wall 11, reduce heat loss, and thus improve the heat preservation performance of the heating furnace.
[0038] The second channel wall 12 is a cylindrical annular shell structure located between the first channel wall 11 and the inner wall of the furnace body 1. The top of the second channel wall 12 is open and the bottom is connected to the space inside the first channel wall 11. The second channel wall 12 is used to install the flange 34 of the blower 3.
[0039] In the existing technology, as shown in the appendix Figure 1 As shown, the flange 34 of the blower 3 is installed on the outside of the furnace body 1. The thickness of the insulation layer 2 at the installation location of the blower 3 is determined by the length of the casing 33. The reasons are as follows: if the thickness of the insulation layer 2 is greater than the length of the casing 33, it will cause interference between the insulation layer 2 and the impeller 32; while increasing the thickness of the insulation layer 2 by increasing the length of the casing 33 will increase the distance between the motor 31 and the impeller 32, thus leading to instability in the structure of the blower 3. Therefore, the length of the casing 33 limits the thickness of the insulation layer 2, resulting in a lower thickness of the insulation layer 2 at the installation location of the blower 3 compared to other locations, directly affecting the insulation performance of the heating furnace and the consistency of insulation performance between different areas of the furnace body 1.
[0040] In this embodiment, the second channel wall 12 allows the installation position of the flange 34 to be moved to the inside of the furnace body 1, so that the thickness of the insulation layer 2 at the installation location of the fan 3 is the sum of the depths of the first channel wall 11 and the second channel wall 12. Without increasing the length of the casing 33, the thickness of the insulation layer 2 can be made thicker, thereby overcoming the problem that the thickness of the insulation layer 2 at the installation location of the fan 3 is lower than the thickness of the insulation layer 2 at other locations of the furnace body 1 due to the limitation of the length of the casing 33.
[0041] To fully utilize the heat insulation effect of the insulation layer 2, the depth of the second channel wall 12 should not be less than 50mm. At the same time, when the depth of the second channel wall 12 exceeds 150mm, the increased thickness of the insulation layer 2 has a limited effect on improving the heat insulation performance of the heating furnace and the cost of the insulation layer 2 increases. Therefore, the depth of the second channel wall 12 is preferably between 50mm and 150mm.
[0042] As attached Figure 5 As shown, the second channel wall 12 also has several small holes. The small holes on the second channel wall 12 are similar in shape, location, distribution, and function to the small holes on the first channel wall 11, and will not be described in detail here.
[0043] Those skilled in the art will understand that this embodiment only shows the case where one fan 3 is installed at the top of the furnace body 1. However, in other embodiments, the fan 3 may also be installed on the side and / or bottom of the furnace body 1, and the number of fans 3 may also be multiple. Obviously, those skilled in the art can make other modifications and variations to this utility model without departing from the spirit and scope of this utility model. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all the changes and modifications falling within the scope of this utility model.
Claims
1. A convection glass heating furnace, comprising a furnace body (1), an insulation layer (2), and a fan (3); the insulation layer (2) is disposed on the inner wall of the furnace body (1); the fan (3) comprises a motor (31), a casing (33), and an impeller (32), wherein the motor (31) is located outside the furnace body (1), the impeller (32) is located inside the furnace body (1), and the casing (33) penetrates the furnace body (1) and the insulation layer (2), characterized in that, The furnace body (1) is provided with a first channel wall (11), which is inclined and the cross-sectional area of the first channel wall (11) gradually decreases in the direction from the outer wall of the furnace body (1) to the inner wall of the insulation layer (2). The shape and size of the casing (33) are adapted to the first channel wall (11).
2. The convection glass heating furnace according to claim 1, characterized in that, The slope of the housing (33) is the same as the slope of the first channel wall (11).
3. The convection glass heating furnace according to claim 1, characterized in that, The first channel wall (11) is in the shape of a frustum or a pyramid.
4. The convection glass heating furnace according to claim 1, characterized in that, The first channel wall (11) has several openings.
5. The convection glass heating furnace according to claim 1, characterized in that, The blower (3) also includes a flange (34) located between the motor (31) and the housing (33). The furnace body (1) is also provided with a second channel wall (12) for installing the flange (34). The internal space of the first channel wall (11) and the second channel wall (12) are connected, and the second channel wall (12) is located between the first channel wall (11) and the inner wall of the furnace body (1).
6. The convection glass heating furnace according to claim 5, characterized in that, The second channel wall (12) is cylindrical.
7. The convection glass heating furnace according to claim 5, characterized in that, The depth of the second channel wall (12) is not less than 50 mm.
8. The convection glass heating furnace according to claim 7, characterized in that, The depth of the second channel wall (12) does not exceed 150 mm.
9. The convection glass heating furnace according to claim 5, characterized in that, The second channel wall (12) has several openings.