Telescopic range hood pipeline

Abstract

The utility model discloses a telescopic range hood pipeline which comprises a plurality of fixing pieces for connecting a pipeline body together, at least two groups of vacuum lifting appliances are arranged on the outer wall of each fixing piece, an adjustable included angle part is formed between every two adjacent vacuum lifting appliances, and the angle of each included angle part does not exceed 120 degrees. And negative pressure vacuum structures are formed between the vacuum part of the vacuum lifting appliance and the wall surface and between the vacuum part and the top. According to the telescopic range hood pipeline, through the arranged telescopic range hood pipeline, the telescopic range hood pipeline can flexibly adapt to different installation environments, the occupation of indoor space is effectively reduced, especially the space utilization efficiency is improved in a kitchen which is generally compact in space, a suction cup fixing structure is adopted, and through stable adsorption of a suction cup and a wall surface, the space utilization efficiency is improved. The risks of deformation and breakage caused by gravity action of long-term suspension of the pipeline are reduced, the oil smoke discharge effect is ensured, and meanwhile potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of range hood duct technology, specifically a telescopic range hood duct. Background Technology

[0002] In the traditional installation of range hood ducts, both ends of the duct are usually directly connected to the backflow preventers of the flue and the range hood. This installation method can be completed relatively easily when the distance between the flue and the range hood is short. However, when the distance between the flue and the range hood is long, the retractable range hood duct is often arbitrarily suspended or placed.

[0003] Arbitrarily suspended pipes will take up extra indoor space, especially in areas like kitchens where space is usually quite compact;

[0004] Furthermore, long-term suspended pipes may deform or even break under the influence of gravity, which not only affects the emission of oil fumes but may also pose safety hazards.

[0005] To address these issues, the current method involves pushing the pipe to the top corner of the wall and using adhesive tape to bond it to the wall. However, due to the smooth surface of tiles in the kitchen, the traditional adhesive bonding method provides weak support. During the smoke exhaust process, the pipe may sway slightly due to the flow of smoke, which in turn affects the stability of the adhesive tape bonding. Utility Model Content

[0006] The purpose of this utility model is to provide a telescopic range hood duct to solve the problem of poor stability of range hood ducts when arbitrarily suspended, as mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a telescopic range hood duct, comprising several fixing components that connect the duct body together, the outer wall of the fixing component having at least two sets of vacuum hangers, an adjustable angle portion formed between adjacent vacuum hangers, the angle of the angle portion not exceeding 120°, and the vacuum portion of the vacuum hanger forming a negative pressure vacuum structure with the wall and the top respectively.

[0008] First, determine the location of the range hood and flue, measure the distance between them, and adjust the extension length of the pipe body according to the actual distance so that it can accurately connect the check valve of the range hood and flue. The lower pipe fastener is usually set on the wall near the check valve of the range hood, and can be selected on a single wall or a corner wall depending on the installation location.

[0009] As a preferred technical solution of this utility model, the fastener includes an upper tube fastener and a lower tube fastener, and the upper tube fastener and the lower tube fastener have the same internal structure.

[0010] As a preferred technical solution of this utility model, the upper pipe fastener and the lower pipe fastener have a hollow structure inside and are connected to the pipe body.

[0011] As a preferred technical solution of this utility model, the vacuum lifting device includes a movable bracket, a threaded tube, and a suction cup. The movable bracket has a concave structure and is movably connected to the outer surfaces of the upper tube and the lower tube.

[0012] As a preferred technical solution of this utility model, the threaded tube and the movable bracket are integrally formed.

[0013] The upper pipe fastener has several movable brackets that slide on its outer surface. The movable brackets are equipped with guide rails and sliding grooves that slide together. The top surface of the movable brackets is also equipped with slide rails and sliding grooves that slide together. The upper pipe fastener is generally installed at the bend of the pipe body. Its installation method is basically the same as that of the lower pipe fastener. The difference is that at least one suction cup of the upper pipe fastener needs to be connected to the ceiling or wall to ensure that the pipe fits neatly against the wall. Similarly, by adjusting the position of the movable brackets, adjusting the extension and retraction of the suction cups, and fixing the movable brackets, the upper pipe fastener is stably installed at the bend.

[0014] The movable bracket can slide along the lower tube fastener because the guide rail inside the movable bracket and the slide rail on the top surface slide in cooperation with the guide groove on the outer edge of the lower tube fastener and the slide groove at the top, respectively. By sliding the movable bracket, the suction cup installed on it is aligned horizontally with the wall surface.

[0015] As a preferred technical solution of this utility model, one end of the live suction cup is threadedly connected to the threaded pipe.

[0016] If installing on a single wall, only one suction cup is needed; if installing on a top corner or concave wall, at least two suction cups are required to ensure the lower pipe fastener is stably fixed.

[0017] As a preferred technical solution of this utility model, the bottom of the movable bracket is threaded with a handle of a "T" shape.

[0018] As a preferred technical solution of this utility model, a rubber pad is connected to one end of the handle, and the rubber pad is in contact with the outer surface of one end of the upper tube fastener by the vertical extension and retraction of the handle.

[0019] As a preferred technical solution of this utility model, the upper tube fastener and the lower tube fastener have a guiding function with the movable bracket.

[0020] The rubber pad adheres to the surface of the upper tube fastener. After attaching the suction cup to the designated wall surface, rotate the handle. The handle is threadedly connected to the movable bracket. As the handle rotates, the rubber pad connected to one end gradually approaches and presses against the surface of the lower tube fastener. The friction between the rubber pad and the lower tube fastener is used to fix the movable bracket in its current position and prevent it from sliding.

[0021] Compared with the prior art, the beneficial effects of this utility model of a telescopic range hood duct are:

[0022] The pipes are stably installed on walls and ceilings using upper and lower pipe fasteners, preventing them from hanging haphazardly and making the pipe layout more organized. This reduces the space occupied and makes areas such as kitchens more tidy and orderly. The lower pipe fastener can be installed on a single wall or a corner wall depending on the installation location. When installed on a corner wall, the upper pipe fastener is placed at the bend of the pipe body, and the lower pipe fastener is placed vertically. The suction cups are fixed horizontally and vertically, and the connection points of the two form an angle. The different directions of force provide reinforcement, effectively preventing vibration and thus improving the stability of the pipe fixation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall pipeline installation structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the installation structure of the upper tube fastener and the lower tube fastener of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the upper tube fastener of this utility model;

[0026] Figure 4 This is a schematic diagram of the internal interface structure of the upper tube firmware of this utility model;

[0027] Figure 5 This is a schematic diagram of the installation structure of the movable bracket of this utility model.

[0028] In the diagram: 1. Pipe body; 2. Upper pipe fitting; 3. Lower pipe fitting; 4. Movable bracket; 5. Threaded pipe; 6. Suction cup; 7. Guide groove; 8. Slide groove; 9. Slide rail; 10. Guide rail; 11. Handle; 12. Rubber pad. Detailed Implementation

[0029] Please see Figure 1-5 This structure is limited to installation scenarios where the kitchen wall is tiled and relatively smooth. This utility model provides a technical solution: a telescopic range hood duct, including several fixing parts that connect the duct body 1 together. The outer wall of the fixing part has at least two sets of vacuum hangers, and an adjustable angle is formed between adjacent vacuum hangers. The angle of the angle does not exceed 120°. The vacuum part of the vacuum hanger forms a negative pressure vacuum structure with the wall and the top respectively.

[0030] Vacuum suction cups include glass suction cups or electric suction cups. The suction cup 6 generates negative pressure through its internal vacuum structure, drawing air out of the suction cup 6 and creating a vacuum between the suction cup 6 and the wall or ceiling. This allows the suction cup 6 to be firmly attached to the wall or ceiling, ensuring that the range hood duct will not shift due to vibrations caused by airflow during the exhaust of fumes. The suction cup 6 is generally made of high-temperature resistant and anti-aging materials, which can be used for a long time in the kitchen environment with a lot of fumes and high temperature without being easily damaged.

[0031] Upper tube fastener 2 and lower tube fastener 3 have the same structure but different locations. Lower tube fastener 3 is located below upper tube fastener 2. Please refer to [link / reference]. Figure 1 The lower pipe fastener 3 is set in the direction between the pipe and the range hood check valve. The lower pipe fastener 3 is equipped with suction cups 6, usually two, which can be used at the top corner of the wall. The upper pipe fastener 2 is usually at the bend of the pipe, and is connected to the wall and the ceiling respectively to ensure that the pipe fits neatly and closely to the wall.

[0032] Guide grooves 7 are respectively provided on the outer edges of the upper tube fastener 2 and the lower tube fastener 3, and the guide grooves 7 are slidably engaged with the guide rails 10 on the inner wall of the movable bracket 4. Sliding grooves 8 are provided on the inner walls of the top ends of the upper tube fastener 2 and the lower tube fastener 3, and the sliding grooves 8 are slidably engaged with the top sliding rails 9 of the movable bracket 4. Multiple upper tube fasteners 2 and lower tube fasteners 3 can be provided, while the number of movable brackets 4 must be at least one. Please refer to [link / reference]. Figures 2-5 The movable bracket 4 has an arc-shaped structure to reduce its volume, and the slide rail 9 and guide rail 10 on the inner surface are adapted to the shape of the guide groove 7 and slide groove 8 and slide in a sliding fit. The movable bracket 4 can slide along the arc-shaped trajectory of the upper tube fastener 2 to adjust the angle of the suction cup 6, which can adapt to a variety of installation scenarios.

[0033] To ensure the stability of suction cup 6 after adsorption, please refer to [link / reference]. Figures 2-5 The movable bracket 4 is also provided with a handle 11 that can be threadedly connected at one end. By controlling the threaded transmission between the handle 11 and the movable bracket 4, the distance between the rubber pad 12 and the upper tube fastener 2 or the lower tube fastener 3 can be adjusted. The current position of the movable bracket 4 can be fixed by squeezing with the rubber pad 12. The upper tube fastener 2 and the lower tube fastener 3 are distributed in different positions, which are vertical and horizontal respectively. After installation, the suction cup 6 is subjected to different directions of force, which can achieve the effect of mutual restraint of force and reduce the displacement of the suction cup 6 due to external force.

[0034] To adapt to various installation scenarios, suction cup 6 is designed with a telescopic structure. Please refer to [link / reference]. Figures 2-5 The suction cup 6 has a threaded rod at its end that is inserted into the threaded tube 5. The threaded tube 5 and the suction cup 6 are driven by threads, which can adjust the extension and retraction of the suction cup 6, thereby avoiding the limitation of the installation position and the distance from the wall.

[0035] Working principle: The front and rear ends of the pipe body 1 are connected to the check valves of the range hood or flue, respectively. The lower pipe fastener 3 is set on one end of the wall or at the top corner of the wall. The movable bracket 4 is controlled to slide along the lower pipe fastener 3, so that the suction cup 6 is horizontally aligned with the wall. If it is a single wall, only one suction cup 6 is needed. If it is a top corner or concave corner wall, at least two suction cups 6 are required. The suction cup 6 is adjusted by threading the threaded pipe 5 and is made to fit against the designated wall. Then, the threaded drive of the control handle 11 presses the rubber pad 12 to fix the current position of the movable bracket 4. If it is necessary to maintain the pipe or adjust the installation position, simply rotate the adjustment handle 11 in the opposite direction to release the rubber pad 12 from fixing the movable bracket 4. The movable bracket 4 can then be slid to adjust the position of the suction cup 6, or the suction cup 6 can be rotated to adjust its extension length. Afterwards, tighten handle 11 again to fix the movable bracket 4. This flexible adjustment method makes the maintenance and installation position of the pipe more convenient and quick. The upper pipe fastener 2 is set at the bend of the pipe body 1. The installation method is the same as above. The difference is that the upper pipe fastener 2 has at least one suction cup 6 connected to the ceiling or wall. When the range hood is working, the oil fumes enter the pipe body 1 through the range hood. Since the pipe body 1 adopts a telescopic design, it can be flexibly adjusted according to the actual installation environment to ensure that the oil fumes can be smoothly transported to the flue through the pipe. At the same time, the fixing mechanism uses the suction cups 6 on the upper pipe fastener 2 and the lower pipe fastener 3 to stably fix the pipe body 1 to the wall and ceiling, avoiding the problem of pipe deformation and breakage due to long-term suspension, ensuring the oil fume emission effect and reducing safety hazards.

Claims

1. A telescopic extractor duct, characterized in that, The utility model relates to a kind of pipe fixing device, including the fixed piece that pipe body (1) is connected together, the outer wall of the fixed piece has at least two groups of vacuum hanger, and the adjustable included angle part is formed between adjacent vacuum hangers, the angle of the included angle part is not more than 120 °, and vacuum part of vacuum hanger forms negative pressure vacuum structure between wall surface and top respectively.

2. A telescopic extractor hood duct according to claim 1, characterised in that: The fixed piece includes upper pipe fixing part (2) and lower pipe fixing part (3), and the internal structure of the upper pipe fixing part (2) and the lower pipe fixing part (3) is same.

3. A telescopic extractor hood duct according to claim 2, characterised in that: The upper pipe fixing part (2) and the lower pipe fixing part (3) are hollow inside and connected with the pipe body (1).

4. A telescopic extractor hood duct according to claim 1, characterized in that: The vacuum hanger includes movable support (4), threaded tube (5) and suction disc (9), and the movable support (4) is concave structure and movably connected to the outer surface of the upper pipe fixing part (2) and the lower pipe fixing part (3).

5. A telescopic extractor hood duct according to claim 4, characterised in that: The threaded tube (5) is integrally formed with the movable support (4).

6. A telescopic extractor hood duct according to claim 4, characterised in that: One end of the suction disc (9) is threadedly connected with the threaded tube (5).

7. A telescopic extractor hood duct according to claim 4, characterised in that: The bottom of the movable support (4) is threadedly connected with a "T"-shaped handle (11).

8. A telescopic extractor hood duct according to claim 7, characterised in that: One end of the handle (11) is connected with a rubber pad (12), and the rubber pad (12) is vertically stretched and retracted with the outer surface of one end of the upper pipe fixing part (2) through the handle (11).

9. A telescopic extractor hood duct according to claim 2, characterized in that: The upper pipe fixing part (2) and the lower pipe fixing part (3) have a guiding function with the movable support (4).

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