Stainless steel flue assembly easy to disassemble
By using a limiting groove and sealing ring in the stainless steel flue assembly, convenient installation and disassembly are achieved, improving versatility and sealing performance, and solving the problems of troublesome installation and poor versatility in the existing technology.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI DEHAO ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-22
AI Technical Summary
The existing stainless steel flue pipes are difficult to install and disassemble, require on-site cutting, have poor versatility, and their sealing effect depends on aluminum foil tape.
The system uses right-angle connecting pipes, with the first and second pipes installed by limiting pressure grooves and sealed by sealing rings and plugs. The extension pipe has an adjustable length, and the reducing joint and check valve are sealed by sealing sleeves and annular sealing strips.
It enables convenient installation and disassembly of stainless steel flue pipes, improves versatility, and the sealing effect does not rely on tin foil or tape. The extension pipe length is adjustable, and the sealing performance is high.
Smart Images

Figure CN224266567U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue technology, specifically to a stainless steel flue assembly that is easy to assemble and disassemble. Background Technology
[0002] Exhaust pipes are typically installed between the ducts of range hoods to vent the fumes extracted by the hoods into the ducts. The two ends of the exhaust pipe connect to the range hood and the duct check valve, usually by direct insertion and securing with tape. The timely removal of kitchen fumes is crucial for the health of chefs and cooks who work in the kitchen for extended periods. If the exhaust pipe leaks, fumes will fill the entire kitchen, impacting cooking and people's health. To extend the lifespan of exhaust pipes, stainless steel pipes are now commonly used.
[0003] Stainless steel flue pipes require multiple components to be assembled during installation, typically using a combination of reducers. After installation, the joints need to be sealed with aluminum foil tape. The installation process is quite time-consuming and not convenient for later disassembly. In addition, the length of the stainless steel flue pipe needs to be cut according to the site dimensions, which reduces its versatility. Furthermore, range hood exhaust pipes come in various sizes, and standard stainless steel flue pipes are not universally compatible. Therefore, we have proposed a stainless steel flue pipe assembly that is easy to disassemble and assemble. Utility Model Content
[0004] The purpose of this invention is to provide a stainless steel flue assembly that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel flue assembly that is easy to assemble and disassemble, comprising a first pipe, a right-angle connecting pipe, a second pipe, and a connecting pipe. The right-angle connecting pipe is sleeved on the top of the first pipe, the second pipe is inserted into the right side of the right-angle connecting pipe, and the connecting pipe is located at the right end of the second pipe. A first pressure groove is provided on one side of the inside of the first pipe, and a first sealing ring is provided inside the first pressure groove. A first extension pipe is inserted into the inside of the first pipe, and the outer side of the first extension pipe is tightly fitted with the inner side of the first sealing ring. A second pressure groove is provided on both sides of the outside of the right-angle connecting pipe, and a second sealing ring is provided inside the second pressure groove. The outer wall of the first pipe is tightly fitted with the inner wall of one side of the second sealing ring. A limiting pressure groove is provided on both sides of the inside of the right-angle connecting pipe, and the outer wall of the second pipe is tightly fitted with the inner wall of the other side of the second sealing ring. A third pressure groove is provided on one side of the inside of the second pipe, and a third sealing ring is provided inside the third pressure groove. A second extension pipe is inserted into the inside of the second pipe, and the outer wall of the second extension pipe is tightly fitted with the inner wall of the third sealing ring.
[0006] Preferably, a mating groove is fixedly connected to the bottom circumference of the first extension tube, and a sealing ring is provided inside the mating groove. An annular groove is opened around the inner sidewall of the sealing ring, and the annular grooves are arranged sequentially.
[0007] Preferably, the outer circumference of the right-angle connecting pipe is provided with corrugated grooves, and the corrugated grooves are arranged sequentially.
[0008] Preferably, the connecting tube is sleeved on the right end of the second extension tube, a limiting tube is fixedly connected to the outside of the connecting tube, a fourth pressure groove is provided inside the limiting tube, a fourth sealing ring is provided inside the fourth pressure groove, and the outer wall of the second extension tube is tightly fitted with the inner wall of the fourth sealing ring.
[0009] Preferably, a reducing connector is fixedly connected to the right side of the connecting pipe, and a reducing groove is formed on the right side of the reducing connector. An annular sealing sleeve is provided inside the reducing groove, and an annular sealing strip is provided on the inner side of the annular sealing sleeve, and the annular sealing strips are arranged sequentially.
[0010] Preferably, the first sealing ring, the second sealing ring, the third sealing ring, the sealing ring, the fourth sealing ring, the annular sealing sleeve, and the annular sealing strip are all made of phenyl silicone rubber.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. This easy-to-assemble and disassemble stainless steel flue assembly features a right-angle connecting pipe that connects the first and second pipes. The first and second pipes are positioned and controlled by a limiting groove inside the right-angle connecting pipe. Second grooves are located at both ends of the right-angle connecting pipe, and second sealing rings within these grooves seal the first and second pipes. The first extension pipe on the first pipe and the second extension pipe on the second pipe are connected by a plug-in joint, with a reducing connector plugged into the second extension pipe. This plug-in installation eliminates the need for sealing with aluminum foil or tape, making the installation and disassembly of the stainless steel flue assembly more convenient and effortless.
[0013] 2. This easily detachable stainless steel flue assembly features a first pipe that seals the first extension pipe with a first sealing ring within a first pressure groove, allowing for adjustable length of the first extension pipe. A second pipe seals the second extension pipe with a third sealing ring within a third pressure groove, also allowing for adjustable length. The first extension pipe is sealed to the range hood via a sealing ring within a connecting pressure groove. A reducing connector connects to the second extension pipe via a connecting pipe and is sealed by a fourth sealing ring within a fourth pressure groove on a limiting pipe. The reducing connector connects to a check valve via an annular sealing sleeve within a reducing groove and is sealed by an annular sealing strip, thus improving the versatility of the stainless steel flue assembly. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the stainless steel flue assembly that is easy to assemble and disassemble according to this utility model.
[0015] Figure 2 This is a schematic diagram of the main sectional view of the stainless steel flue assembly that is easy to disassemble and assemble according to this utility model.
[0016] Figure 3 This is a schematic diagram of the right-angle connecting pipe structure of the stainless steel flue assembly that is easy to assemble and disassemble according to this utility model.
[0017] Figure 4 This is a schematic diagram of the first extension tube structure of the stainless steel flue assembly that is easy to assemble and disassemble according to this utility model.
[0018] Figure 5 This is a schematic diagram of the connecting pipe structure of the stainless steel flue assembly that is easy to assemble and disassemble, as proposed in this utility model.
[0019] In the diagram: 100, First pipe; 110, First groove; 111, First sealing ring; 120, First extension pipe; 121, Butt groove; 122, Sealing ring; 123, Annular groove; 200, Right-angle connecting pipe; 210, Second groove; 211, Second sealing ring; 220, Limiting groove; 230, Corrugated groove; 300, Second pipe; 310, Third groove; 311, Third sealing ring; 320, Second extension pipe; 400, Butt joint; 410, Limiting pipe; 411, Fourth groove; 412, Fourth sealing ring; 420, Reducing joint; 421, Reducing groove; 422, Annular sealing sleeve; 423, Annular sealing strip. Detailed Implementation
[0020] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 internal connection of 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.
[0023] Example: Figures 1-5 As shown, this utility model provides a stainless steel flue assembly that is easy to assemble and disassemble, which makes the installation and disassembly of the stainless steel flue assembly more convenient and less troublesome, and improves the versatility of the stainless steel flue assembly. It includes a first pipe 100, a right-angle connecting pipe 200, a second pipe 300 and a connecting pipe 400.
[0024] Please refer to it again. Figure 1The first pipe 100 has a first pressure groove 110 on one side inside, and a first sealing ring 111 is provided inside the first pressure groove 110. A first extension pipe 120 is inserted into the first pipe 100. The outer side of the first extension pipe 120 is tightly fitted with the inner side of the first sealing ring 111. A mating pressure groove 121 is fixedly connected around the bottom of the first extension pipe 120. A sealing ring 122 is provided inside the mating pressure groove 121. An annular groove 123 is opened around the inner sidewall of the sealing ring 122, and the annular grooves 123 are arranged in sequence.
[0025] Please refer to it again. Figure 1-5 The right-angle connecting pipe 200 has second pressure grooves 210 on both outer sides, and a second sealing ring 211 is provided inside the second pressure groove 210. The outer side wall of the first pipe 100 is tightly fitted with the inner side wall of one side of the second sealing ring 211. The right-angle connecting pipe 200 has limiting pressure grooves 220 on both inner sides. The outer circumference of the right-angle connecting pipe 200 has corrugated pressure grooves 230, and the corrugated pressure grooves 230 are arranged sequentially. The right-angle connecting pipe 200 is sleeved on the top of the first pipe 100. The right-angle connecting pipe 200 connects the first pipe 100 and the second pipe 300, and the first... Pipe 100 and pipe 300 are limited and installed by the limiting groove 220 inside the right-angle connecting pipe 200. At the same time, the right-angle connecting pipe 200 is provided with a second groove 210 at both ends. The first pipe 100 and pipe 300 are sealed by the second sealing ring 211 inside the second groove 210. The first extension pipe 120 on the first pipe 100 and the second extension pipe 320 on the second pipe 300 are connected by insertion. The reducing connector 420 is inserted and installed on the second extension pipe 320. The insertion installation does not require the use of aluminum foil tape for sealing.
[0026] Please refer to it again. Figure 1-5 The outer wall of the second pipe 300 is tightly fitted with the inner wall of the second sealing ring 211 on the other side. A third pressure groove 310 is provided on one side of the inside of the second pipe 300. A third sealing ring 311 is provided inside the third pressure groove 310. A second extension pipe 320 is inserted into the inside of the second pipe 300. The outer wall of the second extension pipe 320 is tightly fitted with the inner wall of the third sealing ring 311. The second pipe 300 is inserted into the right side of the right-angle connecting pipe 200.
[0027] In summary, this makes the installation and disassembly of stainless steel flue pipe assemblies more convenient and less troublesome.
[0028] Please refer to it again. Figure 1-5The connecting pipe 400 is sleeved onto the right end of the second extension pipe 320. A limiting pipe 410 is fixedly connected to the outside of the connecting pipe 400. The limiting pipe 410 has a fourth pressure groove 411 inside, and a fourth sealing ring 412 inside the fourth pressure groove 411. The outer wall of the second extension pipe 320 is tightly fitted with the inner wall of the fourth sealing ring 412. A reducing connector 420 is fixedly connected around the right side of the connecting pipe 400. A reducing groove 421 is opened around the right side of the reducing connector 420. An annular sealing sleeve 422 is provided inside the reducing groove 421. An annular sealing strip 423 is provided inside the annular sealing sleeve 422, and the annular sealing strips 423 are arranged sequentially. The connecting pipe 400 is located at the right end of the second pipe 300, and the first pipe 100 passes through the first pressure groove 110. The first sealing ring 111 seals the first extension pipe 120, allowing the length of the first extension pipe 120 to be adjusted arbitrarily. The second pipe 300 seals the second extension pipe 320 through the third sealing ring 311 in the third pressure groove 310, allowing the length of the second extension pipe 320 to be adjusted arbitrarily. The first extension pipe 120 is sealed to the range hood through the sealing ring 122 in the docking pressure groove 121. The reducing joint 420 is connected to the second extension pipe 320 through the docking pipe 400 and is sealed by the fourth sealing ring 412 in the fourth pressure groove 411 on the limiting pipe 410. The reducing joint 420 is docked with the check valve through the annular sealing sleeve 422 in the reducing groove 421 and is sealed by the annular sealing strip 423.
[0029] In summary, this improves the versatility of stainless steel flue pipe assemblies.
[0030] Please refer to it again. Figure 1-5 The first sealing ring 111, the second sealing ring 211, the third sealing ring 311, the sealing ring 122, the fourth sealing ring 412, the annular sealing sleeve 422, and the annular sealing strip 423 are all made of phenyl silicone rubber. The first sealing ring 111, the second sealing ring 211, the third sealing ring 311, the sealing ring 122, the fourth sealing ring 412, the annular sealing sleeve 422, and the annular sealing strip 423, made of phenyl silicone rubber, have high sealing performance and can also withstand high temperature.
[0031] In practical use, when install the stainless steel flue assembly, the right-angle connecting pipe 200 connects the first pipe 100 and the second pipe 300. The first pipe 100 and the second pipe 300 are positioned by the limiting groove 220 inside the right-angle connecting pipe 200. Simultaneously, second pressure grooves 210 are provided at both ends of the right-angle connecting pipe 200. The first pipe 100 and the second pipe 300 are sealed by the second sealing ring 211 within the second pressure groove 210. The first extension pipe 120 on the first pipe 100 and the second extension pipe 320 on the second pipe 300 are connected by insertion. A reducing connector 420 is inserted into the second extension pipe 320. The first pipe 100 is connected by the first sealing ring 211 within the first pressure groove 110. Ring 111 seals the first extension pipe 120, allowing the length of the first extension pipe 120 to be adjusted arbitrarily. The second pipe 300 seals the second extension pipe 320 through the third sealing ring 311 in the third pressure groove 310, allowing the length of the second extension pipe 320 to be adjusted arbitrarily. The first extension pipe 120 is sealed to the range hood through the sealing ring 122 in the docking pressure groove 121. The reducing joint 420 is connected to the second extension pipe 320 through the docking pipe 400, and is sealed by the fourth sealing ring 412 in the fourth pressure groove 411 on the limiting pipe 410. The reducing joint 420 is docked with the check valve through the annular sealing sleeve 422 in the reducing groove 421, and is sealed by the annular sealing strip 423. The stainless steel flue assembly is now installed.
[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A stainless steel flue assembly that is easy to assemble and disassemble, characterized in that: The system includes a first pipe (100), a right-angle connecting pipe (200), a second pipe (300), and a connecting pipe (400). The right-angle connecting pipe (200) is sleeved on the top of the first pipe (100), and the second pipe (300) is inserted into the right side of the right-angle connecting pipe (200). The connecting pipe (400) is located at the right end of the second pipe (300). A first pressure groove (110) is provided on one side of the inside of the first pipe (100), and a first sealing ring (111) is provided inside the first pressure groove (110). A first extension pipe (120) is inserted into the inside of the first pipe (100), and the outer side of the first extension pipe (120) is tightly fitted with the inner side of the first sealing ring (111). The right-angle connecting pipe (200) has [missing information - likely related to its components]. There is a second pressure groove (210), and a second sealing ring (211) is provided inside the second pressure groove (210). The outer side wall of the first pipe (100) is tightly fitted with the inner side wall of the second sealing ring (211) on one side. The right-angle connecting pipe (200) has limiting pressure grooves (220) on both sides inside. The outer side wall of the second pipe (300) is tightly fitted with the inner side wall of the second sealing ring (211) on the other side. A third pressure groove (310) is provided on one side inside the second pipe (300), and a third sealing ring (311) is provided inside the third pressure groove (310). A second extension pipe (320) is inserted into the inside of the second pipe (300), and the outer side wall of the second extension pipe (320) is tightly fitted with the inner side wall of the third sealing ring (311).
2. The easily detachable stainless steel flue assembly according to claim 1, characterized in that: The bottom of the first extension tube (120) is fixedly connected with a mating groove (121). The mating groove (121) is provided with a sealing ring (122) inside. The inner sidewall of the sealing ring (122) is provided with an annular groove (123) and the annular grooves (123) are arranged in sequence.
3. The easily detachable stainless steel flue assembly according to claim 1, characterized in that: The right-angle connecting pipe (200) has a corrugated groove (230) around its outer circumference, and the corrugated groove (230) is arranged in sequence.
4. The easily detachable stainless steel flue assembly according to claim 2, characterized in that: The connecting tube (400) is sleeved on the right end of the second extension tube (320). A limiting tube (410) is fixedly connected to the outside of the connecting tube (400). A fourth pressure groove (411) is provided inside the limiting tube (410). A fourth sealing ring (412) is provided inside the fourth pressure groove (411). The outer wall of the second extension tube (320) is tightly fitted with the inner wall of the fourth sealing ring (412).
5. The easily detachable stainless steel flue assembly according to claim 4, characterized in that: A reducing connector (420) is fixedly connected to the right side of the connecting pipe (400). A reducing groove (421) is opened on the right side of the reducing connector (420). An annular sealing sleeve (422) is provided inside the reducing groove (421). An annular sealing strip (423) is provided on the inner side of the annular sealing sleeve (422), and the annular sealing strip (423) is arranged in sequence.
6. The easily detachable stainless steel flue assembly according to claim 5, characterized in that: The first sealing ring (111), the second sealing ring (211), the third sealing ring (311), the sealing ring (122), the fourth sealing ring (412), the annular sealing sleeve (422), and the annular sealing strip (423) are all made of phenyl silicone rubber.