A joint for a smoke evacuation tube and a smoke evacuation assembly

Abstract

The utility model discloses a joint and smoke exhaust assembly of smoke exhaust pipe, the joint of smoke exhaust pipe, including the joint body that hollow and opposite both ends open, the opposite both ends of joint body constitute first connecting part and second connecting part respectively, first connecting part recesses from the direction of end face to second connecting part and forms the annular insertion slot, and the smoke exhaust pipe inserts into first connecting part and fixes, second connecting part is used for with the joint of external connecting object, and the joint still with the joint of external connecting object clamps.

Description

Technical Field

[0001] This utility model relates to an oil fume purification component, and more particularly to a connector for an exhaust pipe, and an exhaust component using the connector for the exhaust pipe. Background Technology

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly remove waste from the stove and fumes produced during cooking and exhaust them outdoors, reducing pollution and purifying the air.

[0003] The installation environment for range hoods on the market is very complex. If the range hood is far from the public flue or far from the exhaust vent leading outdoors, the exhaust pipe provided by the manufacturer is usually not long enough. In this case, the exhaust pipe needs to be lengthened. Generally, an exhaust pipe of the same diameter is used and directly connected to the manufacturer's standard exhaust pipe, then sealed with sealing tape. Some manufacturers use an adapter ring as a connector to lengthen the exhaust pipe. The exhaust pipe is fitted onto both ends of the connector, and then fixed and sealed with screws and sealing tape. First, the exhaust pipe is fixed to the connector with tape, and then tightened with a metal clamp. See Chinese Patent Application No. 201520641791.6 for details.

[0004] Because exhaust pipes are typically located in the upper part of the kitchen ceiling, where space is limited, wrapping tape and screwing in screws is very inconvenient. Furthermore, the skill level of the installers can affect the seal, leading to improper tape application and potential oil and smoke leaks. Additionally, using tape for sealing hinders future maintenance. After removing the tape, grease buildup on the exhaust pipe and hood can reduce its adhesiveness, compromising the seal and increasing the risk of leaks. Moreover, over time, the adhesive layer on the tape ages, reducing its bonding strength and causing it to peel or detach, resulting in oil and smoke leaks, user complaints, and a decreased user experience.

[0005] With the continuous advancement of technology in the range hood industry and the continuous improvement of product performance, the air pressure of range hoods is getting higher and higher. The existing air outlet duct interface is subjected to higher pressure, and leakage faults caused by the interface are becoming increasingly prominent, so further improvements are needed. Utility Model Content

[0006] The first technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a connector for a smoke exhaust pipe that allows for easy installation and disassembly of the smoke exhaust pipe and provides a stable connection.

[0007] The second technical problem to be solved by this utility model is to provide a smoke exhaust assembly that uses a connector with the smoke exhaust pipe.

[0008] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: a connector for a smoke exhaust pipe, comprising a hollow connector body with openings at both opposite ends, wherein the two opposite ends of the connector body respectively constitute a first connecting part and a second connecting part; characterized in that:

[0009] The first connecting part is recessed from the end face towards the second connecting part to form an annular slot, and the exhaust pipe is inserted into the first connecting part and fixed.

[0010] The second connecting part is used to engage with an external connecting object, and the connector is also snapped into the external connecting object.

[0011] By allowing the connector to snap into external objects, it is easy to assemble and disassemble, enabling tool-free assembly and disassembly, reducing labor intensity, eliminating the need for tape, ensuring reliable connection, and facilitating the standardization and universalization of the smoke exhaust components it is used in.

[0012] To facilitate the connection between the connector and an external object, a first annular groove is formed on the inner circumferential wall of the connector body. The first annular groove is a groove that opens toward the second connection part.

[0013] To improve the sealing performance between the connection and the external object, a first annular sealing ring is provided in the first annular groove.

[0014] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a smoke exhaust assembly, including a smoke exhaust pipe and an adapter, characterized in that: the adapter and the joint of the smoke exhaust pipe as described above are respectively provided at opposite ends of the smoke exhaust pipe, and the first connection between the smoke exhaust pipe and the joint is fixed by sealant or sealant grease.

[0015] According to one aspect of the present invention, the smoke exhaust assembly can be lengthened, for which the combination of the smoke exhaust pipe, connector and adapter has at least two sets, wherein the connector of one set is connected to the adapter of the other set, the adapter serving as the external connection object.

[0016] According to one aspect of the present invention, the snap-fit ​​engagement method is as follows: the adapter includes a hollow adapter ring with openings at both ends; a slot is provided on the outer peripheral wall of the connector body near the second connecting part; and a first buckle is also provided on the outer peripheral wall of the adapter ring of the adapter, the first buckle engaging with the slot.

[0017] Furthermore, to facilitate the connection between the adapter and the exhaust pipe, the two opposite ends of the adapter ring respectively form a third connecting part and a fourth connecting part. The third connecting part is recessed from the end face of the fourth connecting part to form an annular slot. The end of the exhaust pipe is inserted into the third connecting part and fixed. The fourth connecting part of the adapter of one exhaust pipe assembly is inserted into the first annular groove of the connector of another exhaust pipe assembly.

[0018] According to another aspect of this utility model, the snap-fit ​​connection method is as follows: the adapter includes a hollow adapter ring with openings at both ends and a first buckle disposed on the outer peripheral wall of the adapter ring. The first buckle extends into a second connecting portion, and the second connecting portion of the connector is stepped. The first buckle snaps onto the outer periphery of the second connecting portion. This axial insertion completes the snap-fit ​​connection without rotation, avoiding the problem of the exhaust pipe being twisted and stressed due to misalignment between the pre-embedded exhaust pipe and the exhaust fan outlet, and preventing the exhaust pipe from being subjected to torsional or shear forces.

[0019] According to another aspect of the present invention, the smoke exhaust assembly can be connected to a fire damper, and the external connection object is a connector connecting the fire damper and the joint.

[0020] Furthermore, to facilitate the connection between the connector and the smoke exhaust pipe, the connector includes a hollow connector body with openings at both ends. The inner peripheral wall of the connector body has a second annular groove for the interface of the fire damper to be inserted. The outer peripheral wall of the connector body is provided with a second buckle that engages with the connector. The end of the connector body is inserted into the first annular groove.

[0021] Compared with the prior art, the advantages of this utility model are: by making the connector snap-fit ​​with the external connection object, it is easy to disassemble and assemble, tool-free disassembly and assembly can be achieved, reducing labor intensity, no need to use tape, reliable connection, and facilitates the standardization and universalization of the smoke exhaust components it is used in. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation of the exhaust pipe assembly according to the first embodiment of this utility model;

[0023] Figure 2 This is a cross-sectional view of the exhaust pipe assembly according to the first embodiment of this utility model;

[0024] Figure 3 for Figure 2 An enlarged schematic diagram of part I;

[0025] Figure 4 for Figure 2 An enlarged schematic diagram of part II;

[0026] Figure 5This is an exploded view of the exhaust pipe assembly according to the first embodiment of the present utility model;

[0027] Figure 6 This is a schematic diagram of the connector of the exhaust pipe assembly according to the first embodiment of the present utility model;

[0028] Figure 7 This is a schematic diagram of the connector of the exhaust pipe assembly according to the first embodiment of the present invention (and...). Figure 6 (Different perspectives);

[0029] Figure 8 This is a schematic diagram of the extended assembly of the exhaust pipe assembly according to the first embodiment of this utility model;

[0030] Figure 9 This is a schematic diagram of the installation of the exhaust pipe assembly according to the first embodiment of this utility model;

[0031] Figure 10 This is a schematic diagram of the smoke exhaust assembly according to the first embodiment of the present utility model;

[0032] Figure 11 This is a schematic diagram of the fire damper connector of the smoke exhaust assembly according to the first embodiment of this utility model;

[0033] Figure 12 This is a schematic diagram of the fire damper connector of the smoke exhaust assembly according to the first embodiment of this utility model (and...). Figure 11 (Different perspectives);

[0034] Figure 13 This is a cross-sectional view of the fire damper connector of the smoke exhaust assembly according to the first embodiment of this utility model;

[0035] Figure 14 This is a cross-sectional view of the smoke exhaust assembly according to the first embodiment of this utility model;

[0036] Figure 15 for Figure 14 A magnified schematic diagram of part III;

[0037] Figure 16 This is a cross-sectional view of the smoke exhaust assembly according to the second embodiment of the present utility model;

[0038] Figure 17 This is a schematic diagram of the exhaust pipe assembly according to the second embodiment of the present invention. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0040] 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, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0041] Example 1

[0042] See Figures 1 to 7 A smoke exhaust pipe assembly includes a smoke exhaust pipe 1, a connector 2, and an adapter 3, with the adapter 3 and connector 2 respectively disposed at opposite ends of the smoke exhaust pipe 1. This smoke exhaust pipe assembly can be used in range hoods. The range hood can be controlled using a voice module. A controller, a voice receiving module, and a voice parsing module can be installed in the range hood. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood's fan and other components to perform corresponding operations, thereby achieving intelligent control of the range hood and improving the user experience.

[0043] The connector 2 includes a generally hollow cylindrical connector body 21 with openings at both axial ends. The two opposite ends of the connector body 21 respectively form a first connecting portion 22 and a second connecting portion 23. The first connecting portion 22 is recessed from its end face towards the second connecting portion 23, forming an annular slot. One end of the exhaust pipe 1 can be inserted into and fixed within the first connecting portion 22. Before assembling the exhaust pipe 1 and the connector 2, liquid sealant can be injected into the first connecting portion 22. Then, the exhaust pipe 1 is inserted into the first connecting portion 22, and the sealant fills the gap between the exhaust pipe 1 and the first connecting portion 22. After curing, a solid first sealant 24 is formed, allowing for normal installation and use.

[0044] A slot 25 is provided on the outer peripheral wall of the connector body 21 near the second connecting portion 23. The slots 25 can be evenly spaced along the circumference. To ensure a sufficient number of seals, the number of slots 25 is preferably ≥3. The slot 25 includes a first groove 251 and a second groove 252 arranged circumferentially. The first groove 251 serves as a guide groove, and the second groove 252 serves as a snap-fit ​​groove. The first groove 251 and the second groove 252 are connected. A first guide slope 253 is formed on the edge of the second groove 252 facing the second connecting portion 23, which gradually slopes away from the first groove 251 and away from the second connecting portion 23. The first groove 251 can penetrate the second connecting portion 23.

[0045] A first annular groove 26 is also formed on the inner peripheral wall of the connector body 21 of the connector 2. It is a groove that opens in the direction of the second connecting part 23, and an annular first sealing ring 4 can be provided in the first annular groove 26.

[0046] The adapter 3 is a generally hollow cylinder, comprising a hollow cylindrical adapter ring 31 with openings at both axial ends. The two opposite ends of the adapter ring 31 respectively form a third connecting portion 32 and a fourth connecting portion 33. The third connecting portion 32 is recessed from its end face into the fourth connecting portion 33, forming an annular slot. The other end of the exhaust pipe 1 is inserted into and fixed within the third connecting portion 32. Before assembling the exhaust pipe 1 and the adapter 3, liquid sealant can be injected into the third connecting portion 32. Then, the exhaust pipe 1 is inserted into the third connecting portion 32, and the sealant fills the gap between the exhaust pipe 1 and the third connecting portion 32. After curing, a solid second sealant 34 is formed, allowing for normal installation and use.

[0047] The exhaust pipe 1, connector 2, and adapter 3 can be pre-assembled at the factory. To ensure that connector 2 is universal, its structure and size are consistent with the exhaust hood interface of the range hood.

[0048] The exhaust pipe assembly of this embodiment can be formed by assembling multiple components of the same structure together to create an extended exhaust pipe. See [link / reference]. Figure 8 One of the exhaust pipe components, the adapter 3, is connected to the connector 2 of another exhaust pipe component. For this purpose, the outer peripheral wall of the adapter ring 31 of the adapter 3 is also provided with a first buckle 35, which is used to engage with the slot 25 of the connector 2. The side of the first buckle 35 facing the third connecting part 32 forms a second guide slope 351. The inclination direction and angle of the second guide slope 351 are the same as those of the first guide slope 353.

[0049] During assembly, the second connecting part 23 of the adapter 3 of one of the exhaust pipe assemblies is inserted into the second connecting part 23 of the connector 2 of the other exhaust pipe assembly until it is inserted into the first annular groove 26. The first buckle 35 is snapped into the groove 25. To facilitate the installation of the adapter 3, the first guide slope 253 and the second guide slope 351 are guided to rotate and press the first sealing ring 4 during installation. The second groove 252 of the groove 25 is interference-fitted with the first buckle 35 to form a pressing force on the first sealing ring 4, achieving a better sealing effect.

[0050] To ensure the reliability of the connection, a limiting boss 27 can be provided on the connector body 21 of the connector 2. The limiting boss 27 protrudes from the first groove 251 of the slot 25 toward the edge of the first connecting part 22 toward the second connecting part 23, thereby preventing the exhaust pipe assembly from rotating in the opposite direction when subjected to external force, which would cause the adapter 3 and the connector 2 to loosen.

[0051] In addition, see Figures 9-15 In this embodiment, the exhaust pipe assembly can also be directly installed between the exhaust hood 100 of the range hood and the fire damper 200, thereby discharging the fumes from the range hood into the common flue 300 through the fire damper 200. In this case, the exhaust pipe assembly is connected to the fire damper 200 via a connector 5. The connector 5 includes a hollow cylindrical connector body 51 with openings at both axial ends. A second annular groove 52 is formed on the inner circumferential wall of the connector body 51, opening towards the axial side of the fire damper 200. A second sealing ring 6 can be installed within the second annular groove 52. The fire damper 200 interface can be inserted into the second annular groove 52, and then the two can be connected and fixed with screws. The fire damper 200 interface can press against the second sealing ring 6, thereby forming a reliable seal.

[0052] The outer peripheral wall of the connector body 51 is provided with a second snap fastener 53, which can be located at the end away from the fire damper 200. The structure of the second snap fastener 53 is the same as that of the first snap fastener 35, and it is used to connect with the slot 25 of the connector 2. To ensure the sealing effect, the number of second snap fasteners 53 is preferably ≥3. During installation, the connector 2 is correctly fitted onto the outside of the connector body 51, the end of the connector body 51 is inserted into the first annular groove 26, and then the connector 5 and the connector 2 are rotated and locked into place.

[0053] Example 2

[0054] See Figure 16 and Figure 17In this embodiment, the difference from the first embodiment described above is that the first buckle 35 of the adapter 3 extends into the second connecting portion 23 of the adapter ring 31, and the second connecting portion 23 of the connector 2 is stepped. The first buckle 35 can be snapped onto the outer periphery of the second connecting portion 23. The first buckle 35 is a straight-insertion buckle, that is, it can be snapped on by axial insertion without rotation. This avoids the problem of the exhaust pipe being twisted and stressed due to the misalignment of the pre-embedded exhaust pipe and the exhaust outlet of the smoke extractor, and avoids the exhaust pipe being subjected to torsional or shear forces.

[0055] The second buckle 53 engages with the connector 2 in the same way as the first buckle 35.

[0056] In addition, a paste-like sealant is used instead of the liquid sealant in Example 1. Since the sealant is paste-like, it will not harden, making it convenient for disassembly and assembly during maintenance.

Claims

1. A connector for a smoke exhaust pipe, comprising a hollow connector body (21) with openings at opposite ends, wherein the two opposite ends of the connector body (21) respectively constitute a first connecting portion (22) and a second connecting portion (23); characterized in that: The first connecting part (22) is recessed from the end face towards the second connecting part (23) to form an annular slot, and the exhaust pipe (1) is inserted into the first connecting part (22) and fixed. The second connecting part (23) is used to engage with an external connecting object, and the connector is also snapped into the external connecting object.

2. The joint of the exhaust pipe according to claim 1, characterized in that: A first annular groove (26) is formed on the inner peripheral wall of the connector body (21), and the first annular groove (26) is a groove that opens toward the second connecting part (23).

3. The joint for the exhaust pipe according to claim 2, characterized in that: An annular first sealing ring (4) is provided in the first annular groove (26).

4. A smoke exhaust assembly, comprising a smoke exhaust pipe (1) and an adapter (3), characterized in that: The adapter (3) and the joint of the exhaust pipe as described in claim 2 or 3 are respectively provided at opposite ends of the exhaust pipe (1), and the exhaust pipe (1) and the first connection part (22) of the joint are fixed together by sealant or sealant.

5. The smoke extraction assembly according to claim 4, characterized in that: The combination of the exhaust pipe (1), connector and adapter (3) has at least two sets, one set of connectors being connected to the other set of adapters (3), which serve as the external connection object.

6. The smoke extraction assembly according to claim 5, characterized in that: The adapter (3) includes a hollow adapter ring (31) with openings at both ends. A slot (25) is provided on the outer peripheral wall of the connector body (21) of the connector near the second connecting part (23). A first buckle (35) is also provided on the outer peripheral wall of the adapter ring (31) of the adapter (3). The first buckle (35) engages with the slot (25).

7. The smoke extraction assembly according to claim 6, characterized in that: The two opposite ends of the adapter ring (31) respectively form a third connecting part (32) and a fourth connecting part (33). The third connecting part (32) is recessed from the end face to the fourth connecting part (33) to form an annular slot. The end of the exhaust pipe (1) is inserted into the third connecting part (32) and fixed. The fourth connecting part (33) of the adapter (3) of one exhaust pipe assembly is inserted into the first annular groove (26) of the connector (2) of another exhaust pipe assembly.

8. The smoke extraction assembly according to claim 5, characterized in that: The adapter (3) includes a hollow adapter ring (31) with openings at both ends and a first buckle (35) disposed on the outer peripheral wall of the adapter ring (31). The first buckle (35) extends into a second connecting portion (23). The second connecting portion (23) of the connector (2) is stepped. The first buckle (35) engages with the outer periphery of the second connecting portion (23).

9. The smoke extraction assembly according to claim 4, characterized in that: The smoke exhaust assembly can be connected to the fire damper (200), and the external connection object is the connector (5) connecting the fire damper (200) and the joint.

10. The smoke extraction assembly according to claim 9, characterized in that: The connector (5) includes a hollow connector body (51) with openings at both ends. The inner peripheral wall of the connector body (51) is formed with a second annular groove (52) for the interface of the fire damper (200) to be inserted. The outer peripheral wall of the connector body (51) is provided with a second buckle (53) that engages with the connector. The end of the connector body (51) is inserted into the first annular groove (26) of the connector.

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