Guide structure and vacuum furnace
By designing a guiding structure inside the vacuum furnace, including a sleeve, a guiding assembly, and an exhaust assembly, the problem of localized cooling of components caused by direct gas introduction was solved, thus achieving uniform temperature inside the furnace and consistent heat treatment quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU IHI FENGDONG VACUUM TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-28
AI Technical Summary
In existing vacuum furnaces, when performing pulse processes, the vents cause localized cooling of components inside the furnace, affecting temperature uniformity and resulting in inconsistent heat treatment quality of products from the same furnace.
A guiding structure is designed, including a sleeve, a guiding component, and an exhaust component. The gas is heated inside the furnace through the guiding component and then discharged into the furnace, avoiding a direct cooling effect on the parts. The exhaust component is used to evenly distribute the heated gas.
It improves the temperature uniformity of parts inside the furnace and enhances the consistency of heat treatment quality.
Smart Images
Figure CN224175637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat treatment equipment technology, specifically to a guiding structure and a vacuum furnace. Background Technology
[0002] Heat treatment equipment such as vacuum furnaces employ pulse technology in specific processes to precisely control temperature, improve material properties, or optimize energy consumption.
[0003] Currently, most existing heat treatment equipment, such as vacuum furnaces, has vents on the furnace body for introducing gas during pulse processes. These vents face the loading area inside the furnace. When heating under negative pressure, the pulse process begins, requiring the injection of gas into the furnace. Injecting the process gas through the vents causes localized cooling of components directly opposite the vents, making it impossible to ensure uniform temperature distribution among the components. Ultimately, this results in inconsistent heat treatment quality for products from the same furnace. Utility Model Content
[0004] (I) This utility model provides a guiding structure and a vacuum furnace to alleviate the technical problem that the heat treatment quality of products from the same furnace in the prior art cannot be completely the same and the consistency is low.
[0005] (II) Technical Solution
[0006] To solve the above-mentioned technical problems, the present invention provides a guiding structure for changing the flow direction of gas introduced into the furnace body of a vacuum furnace. The vacuum furnace includes a furnace body and an air inlet pipe. The air inlet pipe is located on the side wall of the furnace body, with one end located on the outside of the furnace body and the other end located inside the furnace body. The air inlet pipe is used to introduce gas into the furnace body. The guiding structure includes a sleeve, a guiding assembly, and an exhaust assembly.
[0007] One end of the sleeve covers the end of the air inlet pipe located inside the furnace body, and the other end is connected to the guide assembly. The guide assembly is arranged along the length of the furnace body and is used to transport the gas introduced through the air inlet pipe.
[0008] The exhaust assembly is located on the guide assembly, with one end of the exhaust assembly connected to the guide assembly and the other end facing the interior of the furnace body.
[0009] Furthermore, the guiding assembly includes a guiding tube, one end of which is connected to the sleeve, and the other end is arranged along the length of the furnace body. The exhaust assembly is located on the guiding tube and is connected to the guiding tube.
[0010] Furthermore, the guide assembly also includes a connecting pipe, one end of which is connected to the end of the sleeve away from the air intake pipe, and the other end of which is connected to the end of the guide pipe facing the sleeve.
[0011] Furthermore, a mounting bracket is provided between the guide tube and the furnace body, and the guide tube is fixed to the inner wall of the furnace body through the mounting bracket.
[0012] Furthermore, the exhaust assembly includes an exhaust section, one end of which is connected to the guide pipe, and the other end faces the interior of the furnace body.
[0013] Furthermore, the exhaust section includes a first exhaust pipe, a second exhaust pipe, and a third exhaust pipe, which are arranged at intervals along the extension direction of the guide pipe, and are all connected to the guide pipe.
[0014] Furthermore, the first exhaust pipe, the second exhaust pipe, and the third exhaust pipe are all perpendicular to the guide pipe.
[0015] Furthermore, the first exhaust pipe is located at one end of the guide pipe facing the sleeve, the third exhaust pipe is located at the other end of the guide pipe, and the second exhaust pipe is located between the first exhaust pipe and the third exhaust pipe. The distance between the second exhaust pipe and the first exhaust pipe is equal to the distance between the second exhaust pipe and the first exhaust pipe.
[0016] Furthermore, the length of the first exhaust pipe is greater than the lengths of the second and third exhaust pipes.
[0017] An embodiment of this utility model also provides a vacuum furnace, including a furnace body, an air inlet pipe, and the aforementioned guiding structure;
[0018] The air intake pipe is located in the furnace body. One end of the air intake pipe is located on the outside of the furnace body, and the other end is located inside the furnace body. It is connected to the guide structure located inside the furnace body. The guide structure is used to deliver the gas introduced by the air intake pipe into the furnace body.
[0019] The beneficial effects of this utility model are:
[0020] This utility model provides a guiding structure for changing the flow direction of gas entering the furnace body of a vacuum furnace. It includes a sleeve, a guiding assembly, and an exhaust assembly. The sleeve covers the end of the inlet pipe located inside the furnace body to prevent gas from directly entering the furnace body. The sleeve is also connected to the guiding assembly, which is arranged along the length of the furnace body. Since the furnace body is at a high temperature, the guiding assembly is heated inside the furnace body. When gas from the inlet pipe is then introduced through the guiding assembly, the gas is first heated by the guiding assembly, and then discharged into the furnace body through the exhaust assembly connected to the guiding assembly. This prevents the gas entering the furnace body from cooling the parts being insulated, effectively improving the temperature uniformity of the parts within the furnace body.
[0021] This utility model provides a vacuum furnace, including a furnace body, an air inlet pipe, and the aforementioned guide structure. The air inlet pipe is located in the furnace body, and the end of the air inlet pipe inside the furnace body is connected to the guide structure located inside the furnace body. The guide structure is used to deliver the gas introduced by the air inlet pipe into the furnace body, so that the gas introduced into the furnace body will not have a cooling effect on the parts being kept warm, and can effectively improve the temperature uniformity of the parts inside the furnace body. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the overall structure of the guide structure provided in an embodiment of the present utility model.
[0024] icon:
[0025] 100 - Furnace body; 101 - Air inlet pipe; 102 - Mounting bracket;
[0026] 200-sleeve;
[0027] 300 - Guide tube; 301 - Connecting tube;
[0028] 400 - First exhaust pipe; 401 - Second exhaust pipe; 402 - Third exhaust pipe. Detailed Implementation
[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0032] Example 1
[0033] like Figure 1 As shown, this utility model provides a guiding structure for changing the flow direction of gas introduced into the furnace body 100 of a vacuum furnace. The vacuum furnace includes a furnace body 100 and an air inlet pipe 101. The air inlet pipe 101 is located on the side wall of the furnace body 100, with one end located on the outside of the furnace body 100 and the other end located inside the furnace body 100. The air inlet pipe 101 is used to introduce gas into the furnace body 100. The guiding structure includes a sleeve 200, a guiding assembly, and an exhaust assembly.
[0034] One end of the sleeve 200 covers the end of the air inlet pipe 101 located inside the furnace body 100, and the other end is connected to the guide assembly. The guide assembly is arranged along the length of the furnace body 100 and is used to transport the gas introduced into the air inlet pipe 101.
[0035] The exhaust assembly is located on the guide assembly, with one end of the exhaust assembly connected to the guide assembly and the other end facing the interior of the furnace body 100.
[0036] In this embodiment, the guiding structure includes a sleeve 200, a guiding assembly, and an exhaust assembly. The sleeve 200 covers the end of the air inlet pipe 101 located inside the furnace body 100 to prevent the gas introduced through the inlet pipe from directly entering the furnace body 100. The sleeve 200 is also connected to the guiding assembly, which is arranged along the length of the furnace body 100. That is, the guiding assembly is inside the furnace body 100, and the inside of the furnace body 100 is at a high temperature. Therefore, the guiding assembly is heated inside the furnace body 100. When the gas introduced through the air inlet pipe 101 is transported through the guiding assembly, the gas can be heated first through the guiding assembly, and then the heated gas can be discharged into the furnace body 100 through the exhaust assembly connected to the guiding assembly. This ensures that the gas introduced into the furnace body 100 will not have a cooling effect on the parts being kept warm, and can effectively improve the temperature uniformity of the parts inside the furnace body 100.
[0037] According to one embodiment provided by this utility model, such as Figure 1 As shown, the guide assembly includes a guide tube 300, one end of which is connected to the sleeve 200, and the other end is arranged along the length of the furnace body 100. The exhaust assembly is located on the guide tube 300 and is connected to the guide tube 300.
[0038] In this embodiment, one end of the guide tube 300 is connected to the sleeve 200 to receive the gas introduced by the air inlet pipe 101. The guide tube 300 is arranged along the length of the furnace body 100, so the guide tube 300 can be heated inside the furnace body 100. When the heated guide tube 300 delivers gas, it can heat the colder gas and then discharge it into the furnace body 100 through the exhaust assembly, so that the gas introduced into the furnace body 100 will not have a cooling effect on the parts that are being kept warm.
[0039] According to one embodiment provided by this utility model, such as Figure 1 As shown, the guide assembly also includes a connecting pipe 301, one end of which is connected to the end of the sleeve 200 away from the air intake pipe 101, and the other end is connected to the end of the guide pipe 300 facing the sleeve 200.
[0040] In this embodiment, a connecting pipe 301 is provided between the sleeve 200 and the guide pipe 300. The two ends of the connecting pipe 301 are connected to the sleeve 200 and the guide pipe 300 respectively. The connecting pipe 301 buffers the gas introduced into the air intake pipe 101 before it enters the guide pipe 300, thereby avoiding the large flow rate from affecting the heating effect of the gas.
[0041] According to one embodiment provided by this utility model, such as Figure 1As shown, a mounting bracket 102 is provided between the guide tube 300 and the furnace body 100, and the guide tube 300 is fixed to the inner wall of the furnace body 100 through the mounting bracket 102.
[0042] In this embodiment, a mounting bracket 102 is fixedly provided on the inner wall of the furnace body 100, and the guide tube 300 is placed on the mounting bracket 102 to facilitate determining the relative position of the guide tube 300 and the furnace body 100.
[0043] Of course, the number of mounting brackets 102 can be set according to actual usage needs. That is, it can be set according to the length of the guide tube 300. It can be one, two or more. The purpose is to deviate from the design concept of this utility model and should fall within the protection scope of this utility model.
[0044] According to one embodiment provided by this utility model, such as Figure 1 As shown, the exhaust assembly includes an exhaust section, one end of which is connected to the guide pipe 300, and the other end faces the interior of the furnace body 100.
[0045] In this embodiment, the guide tube 300 is connected to one end of the exhaust section to transport the gas heated by the guide tube 300 to the exhaust section, and then the gas is transported to the interior of the furnace body 100 through the exhaust section, thereby preventing the colder gas from having a cooling effect on the parts that are being kept warm and improving the temperature uniformity of the internal parts of the furnace body 100.
[0046] According to one embodiment provided by this utility model, such as Figure 1 As shown, the exhaust section includes a first exhaust pipe 400, a second exhaust pipe 401, and a third exhaust pipe 402. The first exhaust pipe 400, the second exhaust pipe 401, and the third exhaust pipe 402 are arranged at intervals along the extension direction of the guide pipe 300, and the first exhaust pipe 400, the second exhaust pipe 401, and the third exhaust pipe 402 are all connected to the guide pipe 300.
[0047] In this embodiment, the exhaust section includes a first exhaust pipe 400, a second exhaust pipe 401, and a third exhaust pipe 402. The heated gas in the guide pipe 300 is discharged into the interior of the furnace body 100 through the first exhaust pipe 400, the second exhaust pipe 401, and the third exhaust pipe 402, which can ensure that the discharged gas is delivered to various positions inside the furnace body 100 more evenly.
[0048] According to one embodiment provided by this utility model, such as Figure 1 As shown, the first exhaust pipe 400, the second exhaust pipe 401 and the third exhaust pipe 402 are all perpendicular to the guide pipe 300.
[0049] In this embodiment, by setting the first exhaust pipe 400, the second exhaust pipe 401 and the third exhaust pipe 402 to be perpendicular to the guide pipe 300, it can be ensured that the discharged gas is delivered more evenly to various positions inside the furnace body 100, rather than being concentrated and output to one or two directions of the furnace body 100.
[0050] According to one embodiment provided by this utility model, such as Figure 1 As shown, the first exhaust pipe 400 is located at one end of the guide pipe 300 facing the sleeve 200, the third exhaust pipe 402 is located at the other end of the guide pipe 300, and the second exhaust pipe 401 is located between the first exhaust pipe 400 and the third exhaust pipe 402. The distance between the second exhaust pipe 401 and the first exhaust pipe 400 is equal to the distance between the second exhaust pipe 401 and the first exhaust pipe 400.
[0051] In this embodiment, the first exhaust pipe 400, the second exhaust pipe 401, and the third exhaust pipe 402 are arranged at equal intervals to ensure that the gas discharged through the exhaust section can be evenly delivered to all positions of the furnace body 100, thereby improving the uniformity of the atmosphere inside the furnace body 100 and ensuring the quality of the heat-treated parts.
[0052] Of course, the specific number of exhaust pipes can be set according to actual usage needs, such as four, five or more, and can be set at equal or unequal intervals. All of these are outside the design concept of this utility model and should fall within the protection scope of this utility model.
[0053] According to one embodiment provided by this utility model, such as Figure 1 As shown, the length of the first exhaust pipe 400 is greater than the lengths of the second exhaust pipe 401 and the third exhaust pipe 402.
[0054] In this embodiment, since the first exhaust pipe 400 is closest to the intake pipe 101, meaning the gas discharged from the first exhaust pipe 400 has the shortest heating time, the length of the first exhaust pipe 400 is set to be greater than the lengths of the second exhaust pipe 401 and the third exhaust pipe 402, so as to ensure that the gas discharged from the first exhaust pipe 400 will not have a cooling effect on the parts that are being insulated.
[0055] Example 2
[0056] This utility model also provides a vacuum furnace, including a furnace body 100, an air inlet pipe 101 and the aforementioned guide structure;
[0057] An air inlet pipe 101 is provided on the furnace body 100. One end of the air inlet pipe 101 is located on the outside of the furnace body 100, and the other end is located inside the furnace body 100. It is connected to a guide structure located inside the furnace body 100. The guide structure is used to deliver the gas introduced by the air inlet pipe 101 into the furnace body 100.
[0058] In this embodiment, the vacuum furnace includes a furnace body 100, an air inlet pipe 101, and the aforementioned guide structure. The air inlet pipe 101 is disposed in the furnace body 100, and the end of the air inlet pipe 101 located inside the furnace body 100 is connected to the guide structure located inside the furnace body 100. The guide structure is used to deliver the gas introduced into the air inlet pipe 101 into the furnace body 100, so that the gas introduced into the furnace body 100 will not have a cooling effect on the parts being kept warm, which can effectively improve and enhance the temperature uniformity of the parts inside the furnace body 100.
[0059] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A guiding structure for changing the flow direction of gas introduced into a vacuum furnace body (100), the vacuum furnace including a furnace body (100) and an inlet pipe (101), the inlet pipe (101) being disposed on the side wall of the furnace body (100), with one end located outside the furnace body (100) and the other end located inside the furnace body (100), the inlet pipe (101) being used to introduce gas into the furnace body (100), characterized in that, The guide structure includes a sleeve (200), a guide assembly, and an exhaust assembly; One end of the sleeve (200) covers the end of the air inlet pipe (101) located inside the furnace body (100), and the other end is connected to the guide assembly. The guide assembly is arranged along the length of the furnace body (100) and is used to transport the gas introduced through the air inlet pipe (101). The exhaust assembly is located on the guide assembly, with one end of the exhaust assembly connected to the guide assembly and the other end facing the interior of the furnace body (100).
2. The guide structure according to claim 1, characterized in that, The guiding assembly includes a guide tube (300), one end of which is connected to the sleeve (200), and the other end is arranged along the length of the furnace body (100). The exhaust assembly is located on the guide tube (300) and is connected to the guide tube (300).
3. The guide structure according to claim 2, characterized in that, The guide assembly also includes a connecting pipe (301), one end of which is connected to the end of the sleeve (200) away from the air intake pipe (101), and the other end is connected to the end of the guide pipe (300) facing the sleeve (200).
4. The guide structure according to claim 3, characterized in that, A mounting bracket (102) is provided between the guide tube (300) and the furnace body (100), and the guide tube (300) is fixed to the inner wall of the furnace body (100) through the mounting bracket (102).
5. The guide structure according to claim 2, characterized in that, The exhaust assembly includes an exhaust section, one end of which is connected to the guide pipe (300), and the other end faces the interior of the furnace body (100).
6. The guide structure according to claim 5, characterized in that, The exhaust section includes a first exhaust pipe (400), a second exhaust pipe (401), and a third exhaust pipe (402). The first exhaust pipe (400), the second exhaust pipe (401), and the third exhaust pipe (402) are arranged at intervals along the extension direction of the guide pipe (300), and the first exhaust pipe (400), the second exhaust pipe (401), and the third exhaust pipe (402) are all connected to the guide pipe (300).
7. The guide structure according to claim 6, characterized in that, The first exhaust pipe (400), the second exhaust pipe (401) and the third exhaust pipe (402) are all perpendicular to the guide pipe (300).
8. The guide structure according to claim 7, characterized in that, The first exhaust pipe (400) is located at one end of the guide pipe (300) facing the sleeve (200), the third exhaust pipe (402) is located at the other end of the guide pipe (300), and the second exhaust pipe (401) is located between the first exhaust pipe (400) and the third exhaust pipe (402). The distance between the second exhaust pipe (401) and the first exhaust pipe (400) is equal to the distance between the second exhaust pipe (401) and the first exhaust pipe (400).
9. The guide structure according to claim 8, characterized in that, The length of the first exhaust pipe (400) is greater than the lengths of the second exhaust pipe (401) and the third exhaust pipe (402).
10. A vacuum furnace, characterized in that, It includes a furnace body (100), an air inlet pipe (101), and a guide structure as described in any one of claims 1-9; The air intake pipe (101) is located on the furnace body (100). One end of the air intake pipe (101) is located on the outside of the furnace body (100), and the other end is located inside the furnace body (100). It is connected to the guide structure located inside the furnace body (100). The guide structure is used to deliver the gas introduced by the air intake pipe (101) into the furnace body (100).