A flue connection assembly

Abstract

The utility model discloses a kind of exhaust pipe connecting assemblies, including hollow cylindrical connecting piece and the exhaust pipe connected with connecting piece, the top of connecting piece is formed with the connecting piece inner ring wall and connecting piece outer ring wall that are all extended upwards, the connecting piece inner ring wall and connecting piece outer ring wall are spaced apart from inside to outside, the exhaust pipe is sleeved in the outside of connecting piece inner ring wall, the exhaust pipe connecting assembly further includes the batten that can be tightly pressed in the outside of connecting piece inner ring wall, the top of connecting piece and connecting piece outer ring wall constitute the accommodating groove of accommodating batten, the batten interference fit between connecting piece outer ring wall and exhaust pipe, glue is used in the accommodating groove. Compared with prior art, the utility model can solve the connection firmness and sealing problem of exhaust pipe and connecting piece.

Description

Technical Field

[0001] This utility model relates to an oil fume purification device, and in particular to a smoke exhaust pipe connection assembly. Background Technology

[0002] The exhaust pipes and connectors of existing range hoods are all connected by flexible connections, and aluminum foil tape is usually used to fix the exhaust pipes to the connectors.

[0003] For example, Chinese utility model patent application number 201720895177.1 discloses a flue gas pipe diameter changing adapter structure, including a connector and an adapter body. The connector is set on the top surface of the adapter body, and the connector and the adapter body are provided with through holes for oil fume circulation. The connector includes an upper connecting part, a middle connecting part and a lower connecting part. The upper connecting part includes an upper inner ring and an upper outer ring of the connector. A first gap groove for snapping aluminum foil tube is formed between the upper inner ring and the upper outer ring of the connector. The aluminum foil tube is snapped in the first gap groove. Aluminum foil tape is adhered between the upper outer ring of the connector and the aluminum foil tube.

[0004] The connectors have a certain degree of rigidity, while the exhaust pipe is a flexible component, making it difficult to control the adhesion strength between the exhaust pipe and the tape when applying adhesive tape. The connection surface between the exhaust pipe and the connector is not planar but rather an irregularly shaped surface; when the tape is wrapped around the pipe, wrinkles will appear, creating gaps. Wind pressure at the exhaust pipe will cause the tape to vibrate continuously, which, after prolonged operation, can lead to the tape detaching from the exhaust pipe, resulting in smoke and oil leaks. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a smoke exhaust pipe connection assembly that addresses the problems existing in the prior art, thereby solving the problems of the connection firmness and sealing between the smoke exhaust pipe and the connector.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a smoke exhaust pipe connection assembly, including a hollow cylindrical connector and a smoke exhaust pipe connected to the connector. The top of the connector has an inner ring wall and an outer ring wall that both extend upwards. The inner ring wall and the outer ring wall are spaced apart from the inside to the outside. The smoke exhaust pipe is sleeved on the outside of the inner ring wall of the connector. The smoke exhaust pipe connection assembly further includes a pressure strip that can press the smoke exhaust pipe tightly against the outside of the inner ring wall of the connector. The inner ring wall of the connector, the top of the connector, and the outer ring wall of the connector form a receiving groove for receiving the pressure strip. The pressure strip is interference-fitted between the outer ring wall of the connector and the smoke exhaust pipe. The receiving groove is used to fill glue.

[0007] By setting a pressure strip, the exhaust pipe is pressed tightly against the outer side of the inner ring wall of the connector through physical compression, so as to prevent it from easily falling off and separating. Then, glue is filled into the receiving groove, thereby solving the sealing problem between the exhaust pipe and the connector.

[0008] In order to generate extrusion pressure, the pressure strip includes an inner wall and an outer wall that are both arc-shaped. The inner wall and the outer wall are spaced apart from the inside to the outside, and a support rib connects the inner wall and the outer wall.

[0009] To create a cavity between the pressure strip and the receiving groove that facilitates glue flow, the bottom of the inner wall of the pressure strip gradually slopes downwards towards the outer wall, and the bottom of the outer wall of the pressure strip gradually slopes downwards towards the inner wall. The bottom end of the inner wall of the pressure strip is connected to the bottom end of the outer wall, and the bottom of the inner wall and the bottom of the outer wall constitute the bottom of the pressure strip. The inner ring wall, the top of the connector, and the outer ring wall of the connector constitute the receiving groove for accommodating the pressure strip. The inner side of the bottom of the pressure strip forms a first glue flow channel. The bottom of the pressure strip has an glue outlet that allows fluid communication between the first glue flow channel and the receiving groove. The bottom of the support rib is higher than the glue outlet.

[0010] To facilitate mold making, the support ribs are positioned above the glue outlet.

[0011] To facilitate mold making, two support ribs are provided at each glue outlet. The two support ribs are spaced apart longitudinally, and the distance between the two support ribs is less than the length of the glue outlet in the circumferential direction of the pressure strip.

[0012] To achieve better and more uniform glue injection, the pressure strip is an arc shape adapted to the shape of the exhaust pipe, and the glue outlets are evenly distributed at the bottom of the pressure strip.

[0013] To enable the installation of the pressure strip, the pressure strip is in the shape of an arc block. The top of the outer wall of the pressure strip has a first extension extending radially outward and a second extension extending downward on the outside of the first extension. The outer periphery of the outer ring wall of the connector has a protruding locking block, and the second extension has a locking groove that engages with the locking block.

[0014] To further meet the fluidity requirements of the adhesive, the support rib is formed with an inclined portion that gradually slopes from top to bottom from the outer wall of the pressure strip to the inner wall of the pressure strip. The top of the inner wall of the pressure strip is lower than the top of the outer wall of the pressure strip. The inclined portion, the inner wall of the pressure strip, and the outer side of the connector constitute a second adhesive flow channel.

[0015] Compared with existing technologies, the advantages of this invention are as follows: By setting a pressure strip, the exhaust pipe is tightly pressed against the outer side of the inner ring wall of the connector through physical compression, achieving the effect of preventing easy detachment. Supporting ribs are provided between the inner and outer walls of the pressure strip to provide compressive force during assembly. A first adhesive flow channel is provided at the bottom of the pressure strip, allowing the liquid adhesive dripped onto it to flow freely within the annular channel. By forming a second adhesive flow channel with the inclined portion of the supporting ribs, the inner wall of the pressure strip, and the outer side of the connector, the flowability requirements of the adhesive are further met. Even when the flow rate of the first adhesive flow channel at the bottom is limited, the adhesive can quickly overcome the obstruction of the pressure strip through the second adhesive flow channel to fill the entire receiving groove. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the exhaust pipe connection assembly according to Embodiment 1 of this utility model;

[0017] Figure 2 This is a cross-sectional view of the exhaust pipe connection assembly according to Embodiment 1 of this utility model;

[0018] Figure 3 for Figure 2 A magnified view of section I;

[0019] Figure 4 This is an exploded view of the exhaust pipe connection assembly according to Embodiment 1 of this utility model;

[0020] Figure 5 This is a schematic diagram of the pressure strip of the exhaust pipe connecting assembly according to Embodiment 1 of this utility model;

[0021] Figure 6 This is a cross-sectional view of the pressure strip of the exhaust pipe connecting assembly according to Embodiment 1 of this utility model;

[0022] Figure 7 This is a schematic diagram of the installation of the exhaust pipe connection assembly according to Embodiment 2 of this utility model;

[0023] Figure 8 This is a schematic diagram of the second adhesive flow channel of the exhaust pipe connection assembly in Embodiment 2 of this utility model;

[0024] Figure 9 This is a schematic diagram of the inner side of the pressure strip of the exhaust pipe connecting assembly in Embodiment 2 of this utility model;

[0025] Figure 10 This is a schematic diagram of the outer side of the pressure strip of the exhaust pipe connecting assembly in Embodiment 2 of this utility model. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] 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.

[0028] Example 1

[0029] See Figures 1-4 A smoke exhaust pipe connection assembly includes a hollow cylindrical connector 1 and a smoke exhaust pipe 2 connected to the connector 1. The top of the connector 1 has an inner annular wall 11 and an outer annular wall 12, both extending upwards. The inner annular wall 11 and the outer annular wall 12 are spaced apart from the inside out. The smoke exhaust pipe 2 is fitted over the outer side of the inner annular wall 11. The connector 1 is a rigid component, while the smoke exhaust pipe 2 is typically a flexible component such as an aluminum foil tube.

[0030] The exhaust pipe connection assembly also includes a pressure strip 3 that presses the exhaust pipe 2 against the outer side of the inner ring wall 11 of the connector. The pressure strip 3 is interference-fitted between the outer ring wall 12 of the connector and the exhaust pipe 2. The pressure strip 3 includes an inner wall 31 and an outer wall 32, both of which are arc-shaped. The inner wall 31 and the outer wall 32 are spaced apart from the inside to the outside, and a support rib 33 connects the inner wall 31 and the outer wall 32.

[0031] See Figures 3-6 The bottom of the inner wall 31 of the pressure strip gradually slopes downwards towards the outer wall 32, and the bottom of the outer wall 32 gradually slopes downwards towards the inner wall 31. The bottom end of the inner wall 31 is connected to the bottom end of the outer wall 32, and the bottom of the inner wall 31 and the bottom of the outer wall 32 together form the bottom of the pressure strip 3. The inner ring wall 11 of the connector, the top of the connector 1, and the outer ring wall 12 of the connector form a receiving groove 13 for accommodating the pressure strip 3. The inner side of the bottom of the pressure strip 3 forms a first adhesive flow channel 35, and the bottom of the pressure strip 3 has an adhesive outlet 34 that allows fluid communication between the first adhesive flow channel 35 and the receiving groove 13. The bottom of the support rib 33 is higher than the adhesive outlet 34. The pressure strip 3 is generally arc-shaped to match the shape of the exhaust pipe 2, and the adhesive outlets 34 are evenly distributed at the bottom of the pressure strip 3.

[0032] Support ribs 33 are positioned above the glue outlets 34. Two support ribs 33 are provided at each glue outlet 34, with the two support ribs 33 spaced longitudinally. The distance between the two support ribs 33 is less than the length of the glue outlet 34 around the pressure strip 3 in order to facilitate mold making.

[0033] During installation, the exhaust pipe 2 and the connector 1 are placed coaxially, with the bottom of the exhaust pipe 2 placed at the bottom of the receiving groove 13. Then, the pressure strip 3 is pressed into the receiving groove 13. The pressure strip 3 is pressurized at the receiving groove 13 to form a squeezing force, thereby pressing the exhaust pipe 2 tightly onto the inner ring wall 11 of the connector, making it difficult for it to detach.

[0034] The upper end of the pressure strip 3 is not sealed to facilitate external adhesive application after installation. An array of support ribs 33 transmits the pressure during assembly between the inner wall 31 and the outer wall 32 of the pressure strip. A first-flow adhesive channel 35 is provided at the bottom of the pressure strip 3, allowing the liquid adhesive dripped onto it to flow freely within the annular channel. The bottom of the pressure strip 3 has an inverted triangular design, creating a cavity between the pressure strip 3 and the receiving groove 13. This allows the liquid adhesive flowing from the N first-flow adhesive channels 35 to fill the entire cavity along the gap, effectively sealing the exhaust pipe 2 and the connector 1. Furthermore, after the liquid adhesive cures, it further securely fixes the exhaust pipe 2 and the connector 1. Preferably, the adhesive is colorless, odorless, has good fluidity, and a short curing time.

[0035] Example 2

[0036] See Figures 7-10 The pressure strip 3 is arc-shaped. In this embodiment, there are three pressure strips, evenly distributed within the receiving groove 13. The top of the outer wall 32 of the pressure strip has a first extension 321 extending radially outward and a second extension 322 extending downward outward from the outer side of the first extension 321. A protruding locking block 121 is formed on the outer periphery of the outer ring wall 12 of the connector, and a locking groove 3221 is formed on the second extension 322 to engage with the locking block 121.

[0037] The support rib 33 has an inclined portion 331 that gradually slopes from top to bottom towards the inner wall 32 of the pressure strip. The top of the inner wall 31 is lower than the top of the outer wall 32. The inclined portion 331, the inner wall 31 of the pressure strip, and the outer side of the connector 1 constitute a second adhesive flow channel 36, which can further meet the flow requirements of the adhesive. When the flow rate of the first adhesive flow channel 35 at the bottom is limited, the adhesive can quickly overcome the obstruction of the pressure strip 3 through the second adhesive flow channel 36 and fill the entire receiving groove 13.

[0038] Three pressure strips 3 are arranged in the receiving groove 13. They are assembled with the connector 1 by rotation, pressing the bottom of the exhaust pipe 2 firmly and sealing it with glue, which improves the installation efficiency.

Claims

1. A smoke exhaust pipe connection assembly, comprising a hollow cylindrical connector (1) and a smoke exhaust pipe (2) connected to the connector (1), wherein the top of the connector (1) has an inner annular wall (11) and an outer annular wall (12) extending upwards, the inner annular wall (11) and the outer annular wall (12) being spaced apart from the inside out, and the smoke exhaust pipe (2) being sleeved on the outside of the inner annular wall (11), characterized in that: The exhaust pipe connection assembly also includes a pressure strip (3) that can press the exhaust pipe (2) against the outer side of the inner ring wall (11) of the connector. The inner ring wall (11), the top of the connector (1), and the outer ring wall (12) of the connector form a receiving groove (13) for receiving the pressure strip (3). The pressure strip (3) is interference-fitted between the outer ring wall (12) of the connector and the exhaust pipe (2). The receiving groove (13) is used to fill glue.

2. The exhaust pipe connection assembly according to claim 1, characterized in that: The pressure strip (3) includes an inner wall (31) and an outer wall (32) that are both arc-shaped. The inner wall (31) and the outer wall (32) are spaced apart from the inside to the outside. A support rib (33) connects the inner wall (31) and the outer wall (32).

3. The exhaust pipe connection assembly according to claim 2, characterized in that: The bottom of the inner wall (31) of the pressure strip gradually slopes towards the outer wall (32) of the pressure strip from top to bottom, and the bottom of the outer wall (32) of the pressure strip gradually slopes towards the inner wall (31) of the pressure strip from top to bottom. The bottom end of the inner wall (31) of the pressure strip is connected to the bottom end of the outer wall (32) of the pressure strip. The bottom of the inner wall (31) of the pressure strip and the bottom of the outer wall (32) of the pressure strip constitute the bottom of the pressure strip (3). The inner side of the bottom of the pressure strip (3) constitutes the first glue flow channel (35). The bottom of the pressure strip (3) is provided with a glue outlet (34) that allows the first glue flow channel (35) to be fluidly connected with the receiving groove (13). The bottom of the support rib (33) is higher than the glue outlet (34).

4. The exhaust pipe connection assembly according to claim 3, characterized in that: The supporting rib (33) is positioned above the glue outlet (34).

5. The exhaust pipe connection assembly according to claim 4, characterized in that: Two support ribs (33) are provided at each glue outlet (34). The two support ribs (33) are arranged longitudinally at intervals, and the distance between the two support ribs (33) is less than the length of the glue outlet (34) in the circumferential direction of the pressure strip (3).

6. The exhaust pipe connection assembly according to claim 3, characterized in that: The pressure strip (3) is an arc shape adapted to the shape of the exhaust pipe (2), and the glue outlet (34) is evenly distributed at the bottom of the pressure strip (3).

7. The exhaust pipe connection assembly according to claim 3, characterized in that: The pressure strip (3) is in the shape of an arc block. The top of the outer wall (32) of the pressure strip has a first extension (321) extending radially outward and a second extension (322) extending downward on the outside of the first extension (321). The outer periphery of the outer ring wall (12) of the connector has a protruding locking block (121). The second extension (322) has a locking groove (3221) that engages with the locking block (121).

8. The exhaust pipe connection assembly according to claim 7, characterized in that: The support rib (33) has an inclined portion (331) that gradually slopes from top to bottom from the outer wall (32) of the pressure strip to the inner wall (31) of the pressure strip. The top of the inner wall (31) of the pressure strip is lower than the top of the outer wall (32) of the pressure strip. The inclined portion (331), the inner wall (31) of the pressure strip, and the outer side of the connector (1) constitute a second adhesive flow channel (36).

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