Cover for baking furnace

Abstract

To suppress an increase in temperature of a cover for a baking furnace.SOLUTION: A cover for a firing kiln includes an outer wall member disposed so as to surround a firing kiln, the outer wall member having an air supply port and an exhaust port, a blower configured to introduce a gas from an outside to an inside of the outer wall member through the air supply port and discharge the gas from the inside to the outside of the outer wall member through the exhaust port, and an inner wall member configured to guide the gas introduced from the air supply port to flow along an inner surface of the outer wall member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a cover for a kiln. [Background technology]

[0002] A firing furnace covered with a metal cover is known (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-234768 Summary of the Invention [Problem to be solved by the invention]

[0004] The cover for a kiln is prone to becoming very hot due to the heat of the kiln, which limits the materials that can be used for the cover. Therefore, there is a need for a technology that can prevent the cover from becoming very hot. [Means for solving the problem]

[0005] The present disclosure can be realized in the following forms.

[0006] (1) According to one aspect of the present disclosure, there is provided a kiln cover, comprising: an outer wall member arranged to surround a kiln, the outer wall member having an air inlet and an exhaust port; a blower that introduces gas from the outside to the inside of the outer wall member through the air inlet and exhausts the gas from the inside to the outside of the outer wall member through the exhaust port; and an inner wall member that guides the gas introduced through the air inlet so that it flows along the inner surface of the outer wall member. According to the kiln cover of this configuration, the outer wall member can be cooled by the gas flowing along the inner surface of the outer wall member, thereby preventing the outer wall member from becoming too hot. (2) In the above-described firing furnace cover, the exhaust port may be disposed above the air inlet. According to this type of kiln cover, the gas with a high temperature tends to flow upward, and therefore the gas with a high temperature can be effectively exhausted from the exhaust port. (3) In the above-described kiln cover, the outer wall member may be made of a transparent resin material. According to the kiln cover of this form, the state of the kiln during operation can be visually confirmed from outside the outer wall member. (4) The cover for the firing furnace of the above-described form may further include a guide member arranged between the outer wall member and the inner wall member, and may have a flow path partitioned by the outer wall member, the inner wall member, and the guide member, which connects the air inlet and the exhaust port. According to the kiln cover of this configuration, the outer wall member can be effectively cooled by the gas flowing through the flow path defined by the outer wall member, the inner wall member, and the guide member. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a perspective view of the firing furnace cover of the first embodiment. [Figure 2] Cross-sectional view of line II-II in Figure 1. [Figure 3] FIG. 10 is a perspective view of a firing furnace cover according to a second embodiment. [Figure 4] FIG. 10 is an exploded perspective view of a right side surface of a second embodiment. [Figure 5] FIG. 10 is a cross-sectional view of the right side surface of the second embodiment. [Figure 6] FIG. 10 is an exploded perspective view of a curved surface portion of the second embodiment. [Figure 7] FIG. 10 is a cross-sectional view of a curved surface portion of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] A. First embodiment: FIG. 1 is a perspective view of a kiln cover 10 according to a first embodiment of the present disclosure. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. As shown in FIG. 1, the kiln cover 10 is configured in a substantially rectangular parallelepiped shape and has a front surface 11, a back surface 12, a top surface 13, a bottom surface 14, a left side surface 15, a right side surface 16, and a curved surface 17 connecting the front surface 11 and the top surface 13. As shown in FIG. 2, the kiln cover 10 accommodates a kiln 50. In the present disclosure, the term "kiln" includes both a kiln for firing powdered ceramic material and a kiln for firing powdered metal material.

[0009] As shown in FIGS. 1 and 2, the firing furnace cover 10 includes an outer wall member 100, an inner wall member 200 disposed inside the outer wall member 100, and a blower 300. The outer wall member 100 is disposed so as to surround the firing furnace 50. In this embodiment, the front portion 11, the back portion 12, the top portion 13, the bottom portion 14, the left side portion 15, the right side portion 16, and the curved surface portion 17 are formed by the outer wall member 100. The outer wall member 100 includes a flat plate member forming the front portion 11, plate members with an L-shaped cross section forming the back portion 12 and the top portion 13, a flat plate member forming the bottom portion 14, a flat plate member forming the left side portion 15, a flat plate member forming the right side portion 16, and a curved plate member with an arc-shaped cross section forming the curved surface portion 17.

[0010] As shown in Fig. 2, in this embodiment, the firing furnace 50 is disposed between the right side of the front portion 11 and the right side of the rear portion 12. The firing furnace 50 is supported by a support member (not shown). The support member is disposed between the bottom portion 14 and the firing furnace 50. For example, ancillary equipment for the firing furnace 50 is disposed between the left side of the front portion 11 and the left side of the rear portion 12.

[0011] As shown in FIG. 1 , in this embodiment, a U-shaped handle and hinge are provided on the right side surface portion 16, and the right side surface portion 16 is configured to be openable and closable. A U-shaped handle and hinge are provided on the right side portion of the curved surface portion 17, and the right side portion of the curved surface portion 17 is configured to be openable and closable. During operation of the firing furnace 50, the right side surface portion 16 and the right side portion of the curved surface portion 17 are closed. Before operation of the firing furnace 50, the right side surface portion 16 and the right side portion of the curved surface portion 17 can be opened to load raw materials for the product into the firing furnace 50, and after operation of the firing furnace 50, the right side surface portion 16 and the right side portion of the curved surface portion 17 can be opened to remove the product from the firing furnace 50.

[0012] In this embodiment, the exterior wall member 100 is made of a transparent resin material such as polycarbonate, and no heat insulating material is used in the exterior wall member 100. Therefore, the firing furnace 50 in operation can be seen from outside the exterior wall member 100. However, the entire exterior wall member 100 does not have to be made of a transparent material; for example, the exterior wall member 100 that constitutes the bottom portion 14 may be made of an opaque material.

[0013] The exterior wall member 100 has a first air inlet 110, a second air inlet 120, and an exhaust port 150. The first air inlet 110 and the second air inlet 120 are openings for introducing air from the outside to the inside of the exterior wall member 100. Here, the first air inlet 110 is an opening facing the interior wall member 200, and the second air inlet 120 is an opening not facing the interior wall member 200. In this embodiment, the first air inlet 110 is provided at the upper right end of the front face portion 11. The first air inlet 110 is composed of multiple through holes arranged in a line along the left-right direction of the kiln cover 10. Here, the left-right direction of the kiln cover 10 refers to the direction from the left side face portion 15 to the right side face portion 16. The second air inlet 120 is provided at the lower right end of the front face portion 11. The second air supply port 120 is configured by a plurality of through holes arranged side by side along the left-right direction of the firing furnace cover 10.

[0014] The exhaust port 150 is an opening for discharging air from the inside to the outside of the exterior wall member 100. In this embodiment, the exhaust port 150 is provided above the first air intake port 110 and the second air intake port 120. Specifically, the exhaust port 150 is provided at the rear end portion on the right side of the upper surface portion 13. The exhaust port 150 is configured as a single through-hole.

[0015] The blower 300 is disposed at the exhaust port 150. The blower 300 generates an air flow, thereby introducing air from the outside to the inside of the exterior wall member 100 through the first air inlet 110 and the second air inlet 120, and discharging air from the inside to the outside of the exterior wall member 100 through the exhaust port 150. The blower 300 may be, for example, an axial flow blower that draws in air parallel to the rotation axis of an impeller and sends out air parallel to the rotation axis.

[0016] As shown in FIG. 2 , the inner wall member 200 is disposed between the firing furnace 50 and a first air inlet 110 provided in the outer wall member 100 constituting the front portion 11. The inner wall member 200 guides air introduced from the first air inlet 110 so that it flows along the inner surface of the outer wall member 100. In this embodiment, the inner wall member 200 is formed of a curved plate member and is disposed so as to face the outer wall member 100 constituting the front portion 11. The inner wall member 200 is disposed so that the entire first air inlet 110 overlaps with the inner wall member 200 when viewed in the front-to-rear direction of the firing furnace cover 10. Here, the front-to-rear direction of the firing furnace cover 10 refers to the direction from the front portion 11 toward the rear portion 12. The inner wall member 200 is, for example, fixed to the outer wall member 100 constituting the front portion 11. The inner wall member 200 is formed of a transparent resin material such as polycarbonate, and no heat insulating material is used in the inner wall member 200. However, the inner wall member 200 may be formed of an opaque material, or a heat insulating material may be used in the inner wall member 200.

[0017] In FIG. 2, the air path AF1 flowing from the first air intake port 110 to the exhaust port 150 and the air path AF2 flowing from the second air intake port 120 to the exhaust port 150 are indicated by dashed arrows. Air introduced from the outside through the first air intake port 110 is guided upward by the inner wall member 200. Generally, air flows along a wall surface. Therefore, the air introduced through the first air intake port 110 flows upward along the inner surface of the front portion 11, then flows rearward along the inner surfaces of the curved portion 17 and the upper portion 13, and is discharged to the outside through the exhaust port 150. The air introduced from the outside through the second air intake port 120 flows rearward along the inner surface of the bottom portion 14, then flows upward along the inner surface of the back portion 12, and is discharged to the outside through the exhaust port 150.

[0018] In this embodiment, the firing furnace 50 is used to clathrate the negative electrode material of an all-solid-state battery. The temperature of the firing furnace 50 during operation reaches 430°C. In a comparative example without the first air inlet 110 and the second air inlet 120, the maximum temperature of the firing furnace cover 10 reaches 170°C. In contrast, in this embodiment, the front surface 11, the curved surface 17, and the top surface 13 can be cooled by the air introduced through the first air inlet 110. Furthermore, in this embodiment, the bottom surface 14 and the back surface 12 can be cooled by the air introduced through the second air inlet 120. Therefore, in this embodiment, the maximum temperature of the firing furnace cover 10 can be reduced to 66°C.

[0019] According to the firing furnace cover 10 of the present embodiment described above, the exterior wall member 100 can be cooled by the air introduced from the first air inlet 110 and the second air inlet 120, thereby preventing the exterior wall member 100 from becoming too hot due to the heat of the firing furnace 50. In particular, in this embodiment, the inner wall member 200 is provided to guide the air introduced from the first air inlet 110 so that it flows along the inner surface of the exterior wall member 100. This effectively cools the exterior wall member 100 and prevents the air introduced from the first air inlet 110 from flowing into the firing furnace 50 and cooling the firing furnace 50. Therefore, it is possible to prevent the exterior wall member 100 from becoming too hot and to prevent a deterioration in the quality of products manufactured in the firing furnace 50.

[0020] Furthermore, in this embodiment, the outer wall member 100 can be prevented from becoming too hot, which allows the outer wall member 100 to be made of a transparent resin material such as polycarbonate. This makes it possible to visually observe the state of the firing furnace 50 during operation from outside the firing furnace cover 10. Furthermore, since the inner wall member 200 is also cooled by the air introduced from the first air inlet 110, it is possible to use a transparent resin material such as polycarbonate for the inner wall member 200. This makes it easier to visually observe the state of the firing furnace 50 during operation from outside the firing furnace cover 10, compared to an embodiment in which the inner wall member 200 is made of an opaque material.

[0021] Furthermore, in this embodiment, the outer wall member 100 can be prevented from becoming too hot, which makes it possible to narrow the gap between the outer wall member 100 and the firing furnace 50. Therefore, the firing furnace cover 10 can be made smaller.

[0022] B. Second embodiment: FIG. 3 is a perspective view of a firing furnace cover 10b according to a second embodiment of the present disclosure. FIG. 4 is an exploded perspective view of the right side surface portion 16 according to the second embodiment. FIG. 5 is a cross-sectional view of the right side surface portion 13 according to the second embodiment. FIG. 6 is an exploded perspective view of the curved surface portion 17. FIG. 7 is a cross-sectional view of the curved surface portion 17. As shown in FIG. 3, the second embodiment differs from the first embodiment in that the front surface portion 11, the back surface portion 12, the top surface portion 13, the left side surface portion 15, the right side surface portion 16, and the curved surface portion 17 are each composed of an outer wall member 100, an inner wall member 200 (see FIGS. 4 to 7) disposed inside the outer wall member 100, and a guide member 250 that defines a space between the outer wall member 100 and the inner wall member 200. Unless otherwise specified, the rest of the configuration is the same as that of the first embodiment. In this embodiment, the firing furnace cover 10b does not have a second air intake port 120.

[0023] As shown in FIG. 3 , the outer wall members 100 constituting the front portion 11, left side portion 15, right side portion 16, and curved portion 17 each have a first air inlet 110 and an exhaust port 150. In this embodiment, the rear portion 12 and the top portion 13 are formed from the same outer wall member 100. The portion of the outer wall member 100 constituting the rear portion 12 has the first air inlet 110, and the portion of the outer wall member 100 constituting the top portion 13 has the exhaust port 150. The first air inlets 110 in each of the above-mentioned portions 11-13, 15-17 are formed by a plurality of through-holes arranged in a row along the front-rear or left-right direction of the kiln cover 10. In each of the above-mentioned portions 11-13, 15-17, the exhaust port 150 is located above the first air inlet 110, and a blower 300 is arranged at the exhaust port 150. As shown in FIGS. 4 to 7 , each of the above sections 11 to 13 and 15 to 17 has an air flow path 130 defined by an outer wall member 100, an inner wall member 200, and a guide member 250. In each of the above sections 11 to 13 and 15 to 17, the flow path 130 connects the first air inlet 110 and the exhaust port 150. In each of the above sections 11 to 13 and 15 to 17, the inner wall member 200 does not have a through-hole, and the flow path 130 does not connect to the space in which the firing furnace 50 is disposed. In this embodiment, the rear surface section 12 and the top surface section 13 are formed of the same inner wall member 200 and guide member 250. In this embodiment, the bottom surface section 14 is formed only by the outer wall member 100. However, the bottom surface section 14 may be formed of the outer wall member 100, the inner wall member 200, and the guide member 250, similar to the front surface section 11.

[0024] The outer wall member 100, inner wall member 200, and guide member 250 that make up the front portion 11, rear portion 12, top portion 13, left side portion 15, right side portion 16, and curved portion 17 are made of plate members. In each of the above-mentioned portions 11-13, 15-17, the outer wall member 100 and inner wall member 200 are fixed via the guide member 250. The guide member 250 also functions as a structural member, thereby increasing the rigidity of each of the above-mentioned portions 11-13, 15-17. In each of the above-mentioned portions 11-13, 15-17, the outer wall member 100, inner wall member 200, and guide member 250 are made of a transparent resin material such as polycarbonate, and no insulating material is used for the outer wall member 100, inner wall member 200, and guide member 250. Therefore, the operating state of the firing furnace 50 can be seen from outside the firing furnace cover 10b.

[0025] As shown in FIG. 4, in the right side surface portion 16, the first air inlet 110 is provided at the lower end of the outer wall member 100. The first air inlet 110 is composed of a plurality of through holes arranged in a row along the front-to-rear direction of the kiln cover 10b. In the right side surface portion 16, the exhaust port 150 is provided in the rear portion of the upper end of the outer wall member 100. The exhaust port 150 is composed of a single through hole, and a blower 300 is disposed in the exhaust port 150. In the right side surface portion 16, the guide member 250 has a portion provided along the outer edge of the inner wall member 200 and a portion extending from the lower end of the inner wall member 200 toward the exhaust port 150. In the right side surface portion 16, the flow path 130 branches into multiple paths near the first air inlet 110 and merges into one path near the exhaust port 150.

[0026] 4, the path AF3 of air flowing from the first air intake port 110 in the right side surface portion 16 to the exhaust port 150 is indicated by a dashed arrow. Air introduced from the outside through the first air intake port 110 in the right side surface portion 16 flows toward the exhaust port 150 through a flow path 130 surrounded by the outer wall member 100, the inner wall member 200, and the guide member 250, and is discharged to the outside through the exhaust port 150. The flow path 130 in the right side surface portion 16 is provided so that air flows throughout the entire right side surface portion 16, and therefore the entire right side surface portion 16 is cooled by the air flowing through the flow path 130.

[0027] As shown in FIG. 6 , in the front portion 11 and the curved portion 17, the first air inlet 110 is provided at the lower end of the outer wall member 100. The first air inlet 110 is composed of a plurality of through holes arranged in a row along the left-right direction of the firing furnace cover 10b. In the front portion 11 and the curved portion 17, the exhaust port 150 is provided at the upper end of the outer wall member 100. The exhaust port 150 is composed of a single through hole, and a blower 300 is disposed in the exhaust port 150. In the front portion 11 and the curved portion 17, the guide member 250 has a portion provided along the outer edge of the inner wall member 200 and a portion extending from the lower end of the inner wall member 200 toward the exhaust port 150. In the front portion 11 and the curved portion 17, the flow path 130 branches into multiple paths near the first air inlet 110 and merges into one path near the exhaust port 150.

[0028] 6, the path AF4 of air flowing from the first air intake port 110 in the front portion 11 to the exhaust port 150 is indicated by a dashed arrow. Air introduced from the outside through the first air intake port 110 in the front portion 11 flows toward the exhaust port 150 through a flow path 130 surrounded by the outer wall member 100, the inner wall member 200, and the guide member 250, and is discharged to the outside through the exhaust port 150. The flow path 130 in the front portion 11 is provided so that air flows throughout the entire front portion 11, and therefore the entire front portion 11 is cooled by the air flowing through the flow path 130.

[0029] 6, the path AF5 of air flowing from first air intake port 110 to exhaust port 150 in curved portion 17 is indicated by a dashed arrow. Air introduced from the outside through first air intake port 110 in curved portion 17 flows toward exhaust port 150 through flow path 130 surrounded by outer wall member 100, inner wall member 200, and guide member 250, and is discharged to the outside through exhaust port 150. Flow path 130 in curved portion 17 is provided so that air flows over the entire area of ​​curved portion 17, and therefore the entire area of ​​curved portion 17 is cooled by the air flowing through flow path 130.

[0030] Although not shown in the drawings, similar to the right side surface portion 16, the back surface portion 12, the top surface portion 13, and the left side surface portion 15 are also provided with flow paths 130 so that air can flow throughout the entire areas of each of the portions 12 to 13, 15, and the entire areas of each of the portions 12 to 13, 15 are cooled by the air flowing through the flow paths 130. Therefore, in this embodiment, the maximum temperature of the firing furnace cover 10b can be reduced to 50 degrees Celsius or less.

[0031] According to the firing furnace cover 10b of this embodiment described above, the outer wall member 100 can be more effectively prevented from reaching a high temperature than in the first embodiment.

[0032] C. Other Embodiments: (C1) In each of the above-described embodiments, air is introduced through the first air inlet 110 and the second air inlet 120. However, a gas other than air may be introduced through the first air inlet 110 and the second air inlet 120. For example, an inert gas such as nitrogen gas or argon gas may be introduced.

[0033] (C2) In each of the above-described embodiments, the exhaust port 150 is disposed higher than the first air inlet 110 and the second air inlet 120. However, the exhaust port 150 may be disposed higher than the first air inlet 110 and the second air inlet 120.

[0034] The present disclosure is not limited to the above-described embodiments and can be realized in various configurations without departing from the spirit thereof. For example, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0035] 10, 10b... kiln cover, 11... front portion, 12... rear portion, 13... top portion, 14... bottom portion, 15... left side portion, 16... right side portion, 17... curved portion, 50... kiln, 100... outer wall member, 110... first air inlet, 120... second air inlet, 130... flow path, 150... exhaust port, 200... inner wall member, 250... guide member, 300... blower, AF1 to AF5... paths

Claims

1. A cover for a firing furnace, an outer wall member disposed to surround the firing furnace, the outer wall member having an air intake port and an exhaust port; a blower that introduces gas from the outside to the inside of the outer wall member through the air inlet and discharges the gas from the inside to the outside of the outer wall member through the exhaust port; an inner wall member that guides the gas introduced through the air inlet so that the gas flows along the inner surface of the outer wall member; A cover for a firing furnace.

2. The kiln cover according to claim 1, The exhaust port is disposed above the air inlet.

3. The kiln cover according to claim 1, The outer wall member is formed of a transparent resin material.

4. The kiln cover according to claim 1, a guide member disposed between the outer wall member and the inner wall member; a firing furnace cover having a flow path that is partitioned by the outer wall member, the inner wall member, and the guide member and that connects the air inlet and the exhaust port;

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