CN210861286U

CN210861286U - One-way exhaust assembly for flue

Info

Publication number: CN210861286U
Application number: CN201921758010.6U
Authority: CN
Inventors: 耿洪兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-20
Filing date: 2019-10-20
Publication date: 2020-06-26
Anticipated expiration: 2029-10-20

Abstract

The utility model discloses a one-way exhaust component for a flue, which comprises a pipe body, wherein a frame body is fixedly connected to the inner wall of the pipe body, at least two ventilation frames are arranged on the frame body, and the ventilation frames are obliquely arranged; a snap ring sleeved on the ventilating frame opening is fixedly connected to the upper frame surface, and the air outlet end of the snap ring is a closed coil positioned in a plane; go up the ventilation frame or the framework of frame face top and go up through retaining member fixed mounting have the silica gel piece that can cover whole closed coil, the leeward side of silica gel piece is fixed to clamp through clamping the piece and is equipped with the pressure flat board. The advantages and effects are as follows: the sealing is tight when the device is closed, no gas is leaked, the device is easy and quick to open and is not adhered, and the effective flow area of the smoke is larger; the maintenance or the replacement is fast and convenient; and can horizontal installation again can vertical installation, and the commonality is stronger.

Description

One-way exhaust assembly for flue

Technical Field

The utility model relates to a flue is with one-way exhaust subassembly.

Background

The range hood is the necessary kitchen equipment of modern family. With the range hood, the oil smoke generated in the kitchen can be quickly discharged out of the room, and the cleanness of the kitchen and the sanitation of personnel are ensured.

The joint of the smoke exhaust ventilator and the flue is generally provided with a one-way exhaust component, and the one-way exhaust component has the function of ensuring that the oil smoke can only be exhausted from the room to the flue (outdoors) but can not enter the room from the flue (outdoors).

Traditional one-way exhaust subassembly for flue generally includes the body that one section level set up, and the cavity wall is fitted with a contraceptive ring and is equipped with the ring platform in the body, and the ring bench is along being close to smoke ventilator setting (keeping away from the flue), and the ring bench is along keeping away from smoke ventilator setting (being close to the flue) down, also the ring platform is the slope setting. The upper end of the ring platform is hinged with a fan blade through a hinge piece, and the size of the fan blade can ensure that the fan blade is buckled with the ring platform together and can freely swing upwards. In a natural state, namely when the range hood is closed, the fan blades are buckled on the annular table under the action of self weight and are in a closed state, and at the moment, oil smoke in the flue cannot enter a room. When the range hood is opened, the fan blades are pushed by wind power to swing upwards and separate from the circular table, so that the range hood enters an opening state, and at the moment, indoor oil smoke is sent into a flue under the action of the wind power, and the function of exhausting the oil smoke is realized.

The traditional one-way exhaust assembly for the flue does not have any problem in theory, but has the following defects in the practical use process: 1. the structural design of the joint of the fan blade and the ring platform is unreasonable, the joint of the whole ring platform and the fan blade is difficult to seal, and the phenomenon of oil smoke leakage exists, particularly, the position of the upper edge of the fan blade, namely the position close to the hinged part, is greatly changed due to the vertical swing, and the abrasion is serious; 2. the buckling area of the fan blade and the annular table is large, so that after oil smoke is adhered in the later period of use, the joint part of the fan blade and the annular table is adhered by the oil smoke, the fan blade is difficult to push away by the wind force of the range hood, and the defect is more obvious particularly in winter; 3. due to the structure, after long-term use, the hinged part can be adhered by oil stains to increase the swing damping, greatly reduce the effect of the one-way switch and be difficult to maintain or replace; 4. after long-term use, the fan-area oil can drip to the inner wall of the pipe body and seep out to pollute the wall of a kitchen; 5. due to the structural design, the fan can only be horizontally installed along the smoke flow direction of the pipe body, and cannot be vertically installed, namely, the fan can only be horizontally installed at the side of the flue, and cannot be vertically installed in the flue or at the side of the flue, and the fan cannot be automatically reset during vertical installation.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a structure which is reasonable, tight seal when closed, no air leakage, easy, quick and non-stick when opened, larger effective smoke flow area, stable switch damping after long-term use, free switch, especially when used in winter, reliable and stable use; the maintenance or the replacement is fast and convenient; and can horizontal installation in flue avris, can vertically install in the flue or flue avris again, the one-way exhaust subassembly for the flue that the commonality is stronger.

For solving above-mentioned technical problem, this one-way exhaust subassembly for flue includes the body that the level extended the setting, and its structural feature is: the inner wall of the pipe body is fixedly connected with a frame body for covering the section of the inner cavity of the pipe body, the frame body is at least provided with two ventilation frames, and the upper frame surface of each ventilation frame, which is close to the air outlet, is obliquely arranged in a manner that the upper end of each ventilation frame is close to the air inlet and the lower end of each ventilation frame is close to the air outlet; a snap ring sleeved on the ventilating frame opening is fixedly connected to the upper frame surface, and the air outlet end of the snap ring is a closed coil positioned in a plane; go up ventilation frame or the framework of frame face top and go up through retaining member fixed mounting have the silica gel piece, the leeward side of silica gel piece is fixed to clamp through clamping the piece and is equipped with the pressure flat board, and the windward side of silica gel piece can cover whole closed coil and press fit with it elasticity.

In this application, one-way exhaust subassembly for flue mainly comprises parts such as body, framework, ventilation frame, buckle, retaining member, silica gel piece, card dress spare and clamp plate. Wherein, the body is the major structure of this application, and its main effect is that connect smoke ventilator and flue and provide the flue gas circulation passageway to provide the installation carrier for other one-way control parts of this application. The shape of the pipe body is not limited, and the common shape is a circular pipe, a square pipe, a rectangular pipe or the like. In this application, the rigid coupling has a framework on the body inner wall, and the framework is all around with body inner wall rigid coupling, therefore the framework can cover whole body inner chamber section. In this application, the frame body is provided with at least two ventilation frames, and 3 or 4 ventilation frames can be arranged during actual manufacturing and determined according to actual needs.

For convenience of description, the frame surface of the ventilation frame close to the air outlet is called as an upper frame surface. In this application, go up ventilation frame or the framework of frame face top and go up through retaining member fixed mounting have the silica gel piece, the size of silica gel piece can cover whole ventilation frame oral area, and the leeward side of silica gel piece clamps through clamping a piece fixed and has the clamp plate. The main functions of the flattening plate are two: 1. the elastic silica gel sheet has the plane characteristic by utilizing the plane characteristic of the silica gel sheet, so that the sealing performance of the silica gel sheet and the retaining ring in press fit is ensured; 2. the weight of the silica gel sheet is increased by the weight of the silica gel sheet, and the pressing force of the silica gel sheet when the silica gel sheet is buckled with the buckle ring is also increased, so that the sealing performance is ensured.

In this application, the upper frame face is close to the mode slope setting of air intake and lower extreme near the air outlet according to the upper end. One of the effects of slope setting is in order to cooperate the silica gel piece can seal the ventilation frame under the dead weight. In this application, a retaining ring is fixed to the upper frame surface, the retaining ring is of an annular structure, and the retaining ring is sleeved on the ventilation frame opening. Obviously, the buckle need be slightly bigger than the frame mouth that ventilates, and protrusion in frame face on the frame that ventilates, still sets up like this in order to guarantee the leakproofness under silica gel piece and the frame natural state that ventilates.

In the application, the air outlet end of the retaining ring is located in a plane and is a closed coil. The main purpose of the arrangement is that when the silicon sheet is pressed on the retaining ring, the silicon sheet and the retaining ring are in line contact sealing structure. The line contact sealing structure has the advantages that: 1. compared with surface contact, the sealing is easier, and the sealing effect is not easy to damage; the surface contact type sealing structure is often provided with a small particle in the middle, so that air leakage and sealing failure are caused; 2. the retaining ring is easier to be embedded into the elastic silica gel sheet, the line contact pressure is larger, and the sealing effect is better; 3. after the smoke exhaust ventilator is used for a long time, the surface of the silica gel sheet is adhered with a smoke layer, oil smoke is easy to solidify in winter, so that the smoke layer is adhered and difficult to open, but the oil smoke in the line contact sealing structure is less adhered, and the silica gel sheet is easier to open when the smoke exhaust ventilator is opened.

In this application, the silica gel piece itself has better elasticity and grease proofing performance, and consequently when the closed condition (closure state), also when the silica gel piece lock was to the buckle on, whole ventilation frame all was sealed under the effect of pressing the flat board. Especially this application uses the retaining member to replace traditional articulated elements, utilizes silicon sheet self elastic bending and swing, has also realized the articulated function. When the closing state, the silica gel piece that is close to the retaining member is crooked, and its elasticity is superimposed on silica gel piece and pressure flat board, makes sealed effect more reliable. For traditional articulated elements structure, this application does not have the articulated elements and is glued the problem of linking to each other by the oil smoke after long-term the use, has also guaranteed the stability of long-term use. In addition, this application is when vertical use, also is that the air inlet is when the lower gas vent up, still can guarantee one-way ventilation performance, and flow area is bigger moreover. Because the silica gel piece has elasticity and reset performance, the silica gel piece opens to vertical state or even surpasss vertical state when the oil smoke is taken out, and the silica gel piece utilizes self elasticity ability automatic re-setting when not taking out the oil smoke, resumes closed state. And traditional articulated elements structure, once reach vertical state will can't restore to the throne, only can open and can not close, consequently can't vertical use.

As an improvement, the cross section of the retaining ring is in a wedge shape with a sharp air outlet end and a wider air inlet end.

After the cross section of the retaining ring is set to be wedge-shaped, the part of the retaining ring, which is in press fit with the silica gel sheet, is the edge of the retaining ring, so that the retaining ring can be embedded into the silica gel sheet more easily, the pressing force between the edge and the silica gel sheet is larger, and the sealing effect is better.

As a preferred embodiment, the locking member comprises at least two strip-shaped locking grooves arranged on the ventilation frame or the frame body at intervals left and right, a silicon rubber block tightly matched with the locking grooves is fixedly connected to the upper part of the silicon rubber sheet, and a cavity is formed between two adjacent silicon rubber blocks; the locking plate is matched with the upper portion of the leeward side of the silica gel piece in a pressing mode, locking holes corresponding to the cavities are formed in the locking plate and the ventilation frame, or the locking holes corresponding to the cavities are formed in the locking plate and the frame body, and locking screws for locking the silica gel block in the locking grooves through the silica gel plate are screwed in the locking holes.

In the application, the locking piece mainly comprises a locking groove, a silica gel block, a cavity, a locking plate, a locking hole, a locking screw and the like. Wherein, the locking groove sets up on ventilation frame or framework, and quantity is two at least, controls the interval and sets up. The upper part of the silica gel sheet is fixedly connected with silica gel blocks, the silica gel blocks and the locking grooves are correspondingly arranged in position and quantity, and the silica gel blocks and the locking grooves can be tightly clamped and matched. Because the silicon rubber blocks are arranged at intervals, a cavity is formed between every two adjacent silicon rubber blocks. The locking plate is a strip-shaped flat plate, and a plastic plate is preferably used in production and manufacturing. The locking plate is arranged on the upper part of the leeward side of the silica gel sheet and is in press fit with the upper part of the silica gel sheet. In this application, be equipped with on locking board and the ventilation frame with the locking hole that the cavity corresponds, perhaps be equipped with on locking board and the framework with the locking hole that the cavity corresponds. Locking screws are screwed in the locking holes, and after the locking screws are screwed down, the locking screws lock the silica gel block in the locking grooves through the silica gel plate, so that the silica gel sheet is fixedly installed. When needing the maintenance to dismantle, only need unscrew locking screw, then with the silica gel piece from locking inslot pull out can, the operation is very simple. During actual production and manufacturing, three sets of cavities and corresponding locking screws are generally arranged, namely two cavities and one locking screw are arranged at the middle of each cavity, so that the locking reliability is guaranteed.

As an improvement, inserting holes are uniformly distributed on the silica gel block, the inserting holes are arranged along the length direction of the silica gel block, and the inserting holes extend along the wind direction; the locking plate is fixedly connected with an inserting rod which is inserted and matched with the inserting hole.

Set up the cartridge hole on the silica gel piece, rigid coupling cartridge stick has two effects on the locking plate: 1. through the cartridge cooperation of cartridge stick and cartridge hole, the locking plate is in the same place with silica gel piece upper portion just inseparabler connection, no matter be middle part or corner. Therefore, after the silica gel sheet is fixed, the silica gel sheet is not easy to deform, and is more compact after being buckled, and the sealing performance is better; 2. after the insertion rod is inserted into the insertion hole, the silica gel block can be moderately expanded towards the locking groove, so that the locking effect is better. In this application, the plug-in mounting hole sets up along silica gel piece length direction align to grid, and the plug-in mounting hole extends the setting along wind direction (also plug-in mounting direction).

As a preferred embodiment, the clamping member includes flattening holes disposed at intervals on the flattening plate along the annular track, a silica gel column correspondingly inserted into and fitted with the flattening holes is fixedly connected to the leeward side of the silica gel sheet, and a tapered anti-falling block capable of being in limit fit with the leeward side of the flattening plate is fixedly connected to the end of the silica gel column.

In the application, the clamping piece mainly comprises a flattening hole, a silica gel column and an anti-falling block. Wherein, the flattening holes are arranged on the flattening plate at intervals along an annular track, and are generally arranged as round holes. The silica gel column is fixedly connected to the leeward side of the silica gel sheet, and the silica gel column and the pressing hole are correspondingly arranged, so that the silica gel column and the pressing hole can be assembled together in an inserting mode. The terminal rigid coupling of silica gel column has the anticreep piece, and the anticreep piece is the terminal thin and thick toper of link, and the butt of anticreep piece can be with the spacing cooperation in dull and stereotyped leeward side, has just so guaranteed that anticreep piece and silica gel column are difficult for the slippage after inserting the flattening hole, have guaranteed to use the reliability.

As an improvement, the flue gas purification device also comprises a sleeve which can be tightly sleeved and matched with the air outlet end of the pipe body, the air outlet end of the sleeve is fixedly connected with a mounting plate, the middle part of the mounting plate is provided with a smoke outlet, the mounting plate is also provided with a mounting hole, and a mounting piece for mounting the mounting plate on a flue is inserted in the mounting hole; an oil guide groove extending outwards is fixedly connected to the mounting plate below the smoke exhaust port, a U-shaped groove bent along the U shape of the lower portion of the inner cavity of the casing pipe is fixedly connected to the lower portion of the inner cavity of the casing pipe, the cross section of the U-shaped groove is in a U shape and is matched with the lower portion of the pipe body in an inserted mode, and a sealing gasket arranged in a U shape is arranged in the U-.

In this application, body air-out end still overlaps and is equipped with a sleeve pipe, and the sleeve pipe is closely suit cooperation with the body, and both connect structure as an organic whole. The air outlet end of the sleeve is fixedly connected with a mounting plate, the middle part of the mounting plate is provided with a smoke outlet, and smoke in the pipe body is discharged or enters the flue through the smoke outlet. The mounting plate is also provided with a mounting hole, and a mounting piece for mounting the mounting plate on the flue is inserted in the mounting hole. There are many ways to implement the mounting, such as expansion screws, straps, braces, wires, etc. The sleeve is mounted to the flue through the mounting holes in a manner known in the art and will not be described in detail herein. In this application, the rigid coupling has one to lead the oil groove on the mounting panel of exhaust port below, leads the oil groove opening and upwards, and outside (flue) extends the setting. The oil guide groove has the main function that after long-term use, the accumulated oil accumulated in the tube body is guided into the flue, and the oil is prevented from flowing into a room along a gap. In this application, sleeve pipe inner chamber lower part rigid coupling has the U-shaped groove, and the U-shaped groove is the U-shaped setting along sleeve pipe inner chamber wall lower part. The cross section of the U-shaped groove is also U-shaped, and the opening of the U-shaped groove faces the pipe body, so that the U-shaped groove can be inserted and matched with the lower part of the pipe body. In this application, a U-shaped gasket is provided in the U-shaped groove. When the sleeve and the pipe body are tightly clamped together, the sleeve is in sealing connection with the lower part of the pipe body through the U-shaped groove, so that the accumulated oil in the pipe body and the sleeve can be discharged only along the oil guide groove and cannot flow into a room, and the indoor cleanness and sanitation are guaranteed.

As a further improvement, the bottom surface of the inner cavity of the tube body is obliquely arranged in a mode that the air inlet end is equal to the bottom of the ventilation frame in height and the air outlet end is lower.

After the bottom surface of the inner cavity of the pipe body is obliquely arranged, because the air inlet end and the bottom of the ventilation frame are obliquely arranged in a mode that the air outlet end is equal in height and the air outlet end is lower, namely the air inlet end is higher than the air outlet end, the accumulated oil in the pipe body naturally flows to the lower air outlet end, namely flows to the oil guide groove, and the function of automatically discharging oil is achieved.

In conclusion, the one-way exhaust assembly for the flue with the structure has the advantages of reasonable structure, tight sealing when closed, no air leakage, easiness, rapidness and no adhesion when opened, larger effective smoke flowing area, stable switch damping after long-term use, free switch, and reliable and stable use especially when used in winter; the maintenance or the replacement is fast and convenient; and can horizontal installation in the flue avris, can vertically install in the flue or flue avris again, the commonality is stronger.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings:

fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a schematic view of a fitting structure of the sleeve and the tube body;

FIG. 3 is a schematic view of the fitting structure of the pressing plate, the retaining ring, the tube and the locking screw;

FIG. 4 is a schematic view of the locking member and the tube;

FIG. 5 is a schematic view of the structure of the ventilation frame, the retaining ring, the silica gel sheet, the pressing plate and the silica gel column;

FIG. 6 is a schematic view of a matching structure of the silicone sheet and the ventilation frame in an open state;

FIG. 7 is a diagram illustrating the effect of preventing headwind and tainting odor when the present application is in a closed state;

FIG. 8 is a diagram illustrating the effect of the present application in the open state;

FIG. 9 is a schematic view of the fitting structure of the locking plate, the silicone block, the silicone sheet and the locking hole;

FIG. 10 is a schematic view of the fitting structure of the oil guide groove, the U-shaped groove and the sleeve;

FIG. 11 is a schematic view of the fitting structure of the casing, the smoke outlet, the U-shaped groove and the oil guide groove.

Detailed Description

As shown in the figure, the one-way exhaust assembly for the flue comprises a pipe body 1 which extends horizontally, and a frame body 2 which covers the cross section of an inner cavity of the pipe body is fixedly connected to the inner wall of the pipe body. The frame body is at least provided with two ventilation frames 3, and the upper frame surface of the ventilation frame close to the air outlet is obliquely arranged according to the mode that the upper end is close to the air inlet and the lower end is close to the air outlet. And a snap ring 4 sleeved on the ventilating frame opening part of the ring is fixedly connected to the upper frame surface, and the air outlet end of the snap ring is a closed coil positioned in a plane. Go up ventilation frame or the framework of frame face top and go up and have silica gel piece 6 through retaining member 5 fixed mounting, the leeward side of silica gel piece is fixed to clamp through clamping the piece and is equipped with pressure flat board 7, and the windward side of silica gel piece can cover whole closed coil and press the cooperation with it elasticity.

In this embodiment, the cross section of the retaining ring is in a wedge shape with a tip portion at the air outlet end and a wider air inlet end. After the cross section of the retaining ring is set to be wedge-shaped, the part of the retaining ring, which is in press fit with the silica gel sheet, is the edge of the retaining ring, so that the retaining ring can be embedded into the silica gel sheet more easily, the pressing force between the edge and the silica gel sheet is larger, and the sealing effect is better.

In this embodiment, the locking member includes at least two strip-shaped locking grooves 8 arranged on the ventilation frame or the frame body at intervals. The upper part of the silica gel sheet is fixedly connected with a silica gel block 9 which is tightly matched with the locking groove in a clamping way, and a cavity is formed between every two adjacent silica gel blocks. This application still include with silica gel piece leeward side upper portion press fit's locking plate 10, be equipped with in locking plate and the framework with the locking hole 11 that the cavity corresponds, it has locking screw 12 in the locking groove with the silica gel piece locking to screw up through the silica gel plate in the locking hole. During actual production, the locking holes can be arranged on the locking plate and the ventilation frame corresponding to the cavity, the structure and the working principle are similar, and repeated description is omitted. In the application, the locking piece mainly comprises a locking groove, a silica gel block, a cavity, a locking plate, a locking hole, a locking screw and the like. Wherein, the locking groove sets up on ventilation frame or framework, and quantity is two at least, controls the interval and sets up. The upper part of the silica gel sheet is fixedly connected with silica gel blocks, the silica gel blocks and the locking grooves are correspondingly arranged in position and quantity, and the silica gel blocks and the locking grooves can be tightly clamped and matched. Because the silicon rubber blocks are arranged at intervals, a cavity is formed between every two adjacent silicon rubber blocks. The locking plate is a strip-shaped flat plate, and a plastic plate is preferably used in production and manufacturing. The locking plate is arranged on the upper part of the leeward side of the silica gel sheet and is in press fit with the upper part of the silica gel sheet. In this application, be equipped with on locking board and the ventilation frame with the locking hole that the cavity corresponds, perhaps be equipped with on locking board and the framework with the locking hole that the cavity corresponds. Locking screws are screwed in the locking holes, and after the locking screws are screwed down, the locking screws lock the silica gel block in the locking grooves through the silica gel plate, so that the silica gel sheet is fixedly installed. When needing the maintenance to dismantle, only need unscrew locking screw, then with the silica gel piece from locking inslot pull out can, the operation is very simple. During actual production and manufacturing, three sets of cavities and corresponding locking screws are generally arranged, namely two cavities and one locking screw are arranged at the middle of each cavity, so that the locking reliability is guaranteed.

In the embodiment, the silica gel blocks are uniformly provided with insertion holes 13, the insertion holes are arranged along the length direction of the silica gel blocks, and the insertion holes extend along the wind direction; the locking plate is fixedly connected with an inserting rod 14 which is inserted and matched with the inserting hole. Set up the cartridge hole on the silica gel piece, rigid coupling cartridge stick has two effects on the locking plate: 1. through the cartridge cooperation of cartridge stick and cartridge hole, the locking plate is in the same place with silica gel piece upper portion just inseparabler connection, no matter be middle part or corner. Therefore, after the silica gel sheet is fixed, the silica gel sheet is not easy to deform, and is more compact after being buckled, and the sealing performance is better; 2. after the insertion rod is inserted into the insertion hole, the silica gel block can be moderately expanded towards the locking groove, so that the locking effect is better. In this application, the plug-in mounting hole sets up along silica gel piece length direction align to grid, and the plug-in mounting hole extends the setting along wind direction (also plug-in mounting direction).

In this embodiment, the clamping piece includes that the flattening hole 15 along the annular orbit interval sets up on the flattening board, and the leeward side rigid coupling of silica gel piece has the silica gel column 16 that corresponds the plug-in fit with flattening hole, and silica gel column end rigid coupling has can be with the flattening board leeward side spacing cooperation and be conical anticreep piece 17. In the application, the clamping piece mainly comprises a flattening hole, a silica gel column and an anti-falling block. Wherein, the flattening holes are arranged on the flattening plate at intervals along an annular track, and are generally arranged as round holes. The silica gel column is fixedly connected to the leeward side of the silica gel sheet, and the silica gel column and the pressing hole are correspondingly arranged, so that the silica gel column and the pressing hole can be assembled together in an inserting mode. The terminal rigid coupling of silica gel column has the anticreep piece, and the anticreep piece is the terminal thin and thick toper of link, and the butt of anticreep piece can be with the spacing cooperation in dull and stereotyped leeward side, has just so guaranteed that anticreep piece and silica gel column are difficult for the slippage after inserting the flattening hole, have guaranteed to use the reliability.

In this embodiment, the application further comprises a sleeve 20 which can be tightly sleeved and matched with the air outlet end of the tube body, the air outlet end of the sleeve is fixedly connected with a mounting plate 21, the middle part of the mounting plate is provided with a smoke outlet 22, the mounting plate is also provided with a mounting hole 23, and a mounting piece for mounting the mounting plate on a flue is inserted in the mounting hole; an oil guide groove 24 extending outwards is fixedly connected to the mounting plate below the smoke exhaust port, a U-shaped groove 25 bending along the U-shaped lower portion of the inner cavity of the casing pipe is fixedly connected to the lower portion of the inner cavity of the casing pipe, the cross section of the U-shaped groove is U-shaped and matched with the lower portion of the pipe body in an inserted mode, and a sealing gasket 26 arranged in a U-shaped mode is arranged in the U-shaped groove. In this application, body air-out end still overlaps and is equipped with a sleeve pipe, and the sleeve pipe is closely suit cooperation with the body, and both connect structure as an organic whole. The air outlet end of the sleeve is fixedly connected with a mounting plate, the middle part of the mounting plate is provided with a smoke outlet, and smoke in the pipe body is discharged or enters the flue through the smoke outlet. The mounting plate is also provided with a mounting hole, and a mounting piece for mounting the mounting plate on the flue is inserted in the mounting hole. There are many ways to implement the mounting, such as expansion screws, straps, braces, wires, etc. The sleeve is mounted to the flue through the mounting holes in a manner known in the art and will not be described in detail herein. In this application, the rigid coupling has one to lead the oil groove on the mounting panel of exhaust port below, leads the oil groove opening and upwards, and outside (flue) extends the setting. The oil guide groove has the main function that after long-term use, the accumulated oil accumulated in the tube body is guided into the flue, and the oil is prevented from flowing into a room along a gap. In this application, sleeve pipe inner chamber lower part rigid coupling has the U-shaped groove, and the U-shaped groove is the U-shaped setting along sleeve pipe inner chamber wall lower part. The cross section of the U-shaped groove is also U-shaped, and the opening of the U-shaped groove faces the pipe body, so that the U-shaped groove can be inserted and matched with the lower part of the pipe body. In this application, a U-shaped gasket is provided in the U-shaped groove. When the sleeve and the pipe body are tightly clamped together, the sleeve is in sealing connection with the lower part of the pipe body through the U-shaped groove, so that the accumulated oil in the pipe body and the sleeve can be discharged only along the oil guide groove and cannot flow into a room, and the indoor cleanness and sanitation are guaranteed.

In this embodiment, the pipe body inner chamber bottom surface is according to the equal height of air inlet end and ventilation frame bottom and the lower mode slope setting of air-out end. After the bottom surface of the inner cavity of the pipe body is obliquely arranged, because the air inlet end and the bottom of the ventilation frame are obliquely arranged in a mode that the air outlet end is equal in height and the air outlet end is lower, namely the air inlet end is higher than the air outlet end, the accumulated oil in the pipe body naturally flows to the lower air outlet end, namely flows to the oil guide groove, and the function of automatically discharging oil is achieved.

Claims

1. One-way exhaust subassembly is used to flue, including body (1) that the level extended the setting, characterized by: the inner wall of the pipe body (1) is fixedly connected with a frame body (2) for covering the section of the inner cavity of the pipe body, at least two ventilation frames (3) are arranged on the frame body (2), and the upper frame surfaces of the ventilation frames, which are close to the air outlet, are obliquely arranged in a mode that the upper ends of the ventilation frames are close to the air inlet and the lower ends of the ventilation frames are close to the air outlet; a snap ring (4) sleeved on the ventilating frame opening is fixedly connected to the upper frame surface, and the air outlet end of the snap ring (4) is a closed coil positioned in a plane; go up ventilation frame or the framework of frame face top and go up through retaining member fixed mounting have silica gel piece (6), the leeward side of silica gel piece is fixed to clamp through clamping the piece and is equipped with pressure flat board (7), and the windward side of silica gel piece can cover whole closed coil and press fit with it elasticity.

2. A unidirectional exhaust assembly for a flue as claimed in claim 1 wherein: the cross section of the retaining ring is in a wedge shape with an air outlet end being a tip part and an air inlet end being wider.

3. A unidirectional exhaust assembly for a flue as claimed in claim 2 wherein: the locking piece comprises at least two strip-shaped locking grooves (8) which are arranged on the ventilation frame or the frame body at intervals left and right, the upper parts of the silica gel pieces are fixedly connected with silica gel blocks (9) which are tightly matched with the locking grooves in a clamping manner, and a cavity is formed between every two adjacent silica gel blocks; still include with silica gel piece leeward side upper portion press fit's locking plate (10), be equipped with on locking plate (10) and the ventilation frame with locking hole (11) that the cavity corresponds, perhaps be equipped with on locking plate (10) and the framework with locking hole (11) that the cavity corresponds, it has locking screw (12) of locking the silica gel piece in the locking groove through the silica gel plate to screw up in the locking hole.

4. A unidirectional exhaust assembly for a flue as claimed in claim 3 wherein: the silica gel blocks are uniformly provided with inserting holes (13), the inserting holes are arranged along the length direction of the silica gel blocks, and the inserting holes extend along the wind direction; the locking plate is fixedly connected with an inserting rod (14) which is inserted and matched with the inserting hole.

5. The unidirectional exhaust assembly for a flue of claim 4, wherein: the clamping piece comprises flattening holes (15) arranged on the flattening plate at intervals along an annular track, a silica gel column (16) correspondingly inserted and combined with the flattening holes is fixedly connected to the leeward side of the silica gel sheet, and an anti-falling block (17) which can be in limit fit with the leeward side of the flattening plate and is conical is fixedly connected to the tail end of the silica gel column.

6. A unidirectional exhaust assembly for a flue as claimed in any one of claims 1 to 5 wherein: the flue gas exhaust device also comprises a sleeve (20) which can be tightly sleeved and matched with the air outlet end of the pipe body, the air outlet end of the sleeve is fixedly connected with a mounting plate (21), the middle part of the mounting plate is provided with a smoke outlet (22), the mounting plate is also provided with a mounting hole (23), and a mounting piece for mounting the mounting plate on a flue is inserted in the mounting hole; an oil guide groove (24) extending outwards is fixedly connected to the mounting plate below the smoke exhaust port, a U-shaped groove (25) bent along the U shape of the lower part of the inner cavity of the casing pipe is fixedly connected to the lower part of the inner cavity of the casing pipe, the cross section of the U-shaped groove is U-shaped and is matched with the lower part of the pipe body in an inserted mode, and a sealing gasket (26) arranged in a U shape is arranged in the.

7. A unidirectional exhaust assembly for a flue as claimed in claim 6 wherein: the bottom surface of the inner cavity of the pipe body is obliquely arranged in a mode that the air inlet end is equal to the bottom of the ventilation frame in height and the air outlet end is lower.

8. A unidirectional exhaust assembly for a flue as claimed in any one of claims 1 to 5 wherein: the bottom surface of the inner cavity of the pipe body is obliquely arranged in a mode that the air inlet end is equal to the bottom of the ventilation frame in height and the air outlet end is lower.