Matrix type mute smoke exhauster

Abstract

A second silencing cover is arranged on the outer side of a smoke exhaust cover, the right end of the smoke exhaust cover is connected with a smoke exhaust pipe, a first silencing cover is arranged on the outer side of the smoke exhaust pipe, and multiple sets of large-hole multi-pipe silencers and small-hole multi-pipe silencers are connected to the inner side of the smoke exhaust pipe. A fan blade matrix is arranged at the left end of the exhaust hood, the left end of the fan blade matrix is connected with a check valve, and the fan blade matrix is fixedly connected with the check valve. The large-hole multi-pipe silencer and the small-hole multi-pipe silencer are arranged in the smoke exhaust pipe, so that when the smoke exhaust pipe transmits airflow, the airflow can be silenced in the smoke exhaust pipe through the large-hole multi-pipe silencer and the small-hole multi-pipe silencer; therefore, the equipment can be used for silencing the air flow through the inner and outer silencing mechanisms; and the equipment is divided into the smoke exhaust pipe and the smoke exhaust cover, so that when the equipment is cleaned, the first silencing cover and the second silencing cover can be detached for cleaning, and the cleaning efficiency of the equipment in actual use is improved.

Description

Technical Field

[0001] This utility model relates to the field of range hood exhaust hood technology, specifically a matrix-type silent exhaust hood. Background Technology

[0002] Range hood exhaust hoods are essential kitchen devices for collecting and removing cooking fumes, playing a crucial role in maintaining fresh kitchen air and reducing fume pollution. Utilizing aerodynamic principles, when the range hood is turned on, it creates suction, and the rising fumes are collected by the exhaust hood and discharged outdoors through ducts. However, existing range hood exhaust hoods have some shortcomings, such as:

[0003] Application No.: CN202321821773.7 describes a silent smoke extraction device for home range hoods. This device effectively solves the problems of easy aging, excessive sludge accumulation, and loud wind noise in traditional range hood exhaust pipes, and can also reduce maintenance costs. However, in actual use, because the device is constructed by sequentially installing stainless steel pipes, interlayered rock wool, and PVC hollow composite round pipes from the inside out, it may be difficult to disassemble and clean the exhaust hood itself during cleaning, thus reducing the cleaning efficiency of the device during use.

[0004] Therefore, we propose a matrix-type silent smoke exhaust system to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a matrix-type silent smoke exhaust system to solve the problem mentioned in the background art of the difficulty in disassembling and cleaning the existing silent smoke exhaust hoods on the market.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a matrix-type silent smoke exhaust device, including an openable smoke inlet and a connecting smoke pipe provided at the top of the openable smoke inlet, wherein the left end of the connecting smoke pipe is connected to a smoke exhaust hood, and the left end of the smoke exhaust hood is provided with a smoke exhaust duct.

[0007] The smoke exhaust hood is equipped with a second silencer on the outside, and the right end of the smoke exhaust hood is connected to a smoke exhaust pipe. The smoke exhaust hood is connected to the smoke exhaust pipe through the smoke exhaust pipe. The smoke exhaust pipe is equipped with a first silencer on the outside, and multiple sets of large-hole multi-pipe silencers and small-hole multi-pipe silencers are connected to the inside of the smoke exhaust pipe.

[0008] The left end of the smoke hood is equipped with a fan blade matrix, and the left end of the fan blade matrix is ​​connected to a check valve, and the fan blade matrix and the check valve are fixedly connected.

[0009] By using the first and second silencers to reduce noise on the outside of the exhaust pipe and exhaust hood, the noise generated by the airflow inside the exhaust pipe and exhaust hood can be reduced. Furthermore, by installing large-hole multi-tube silencers and small-hole multi-tube silencers inside the exhaust pipe, the airflow is silenced within the exhaust pipe itself. This allows the equipment to reduce airflow noise through both internal and external silencers, increasing its noise reduction efficiency during use. Moreover, by dividing the equipment into an exhaust pipe and an exhaust hood, cleaning can be performed by removing the first and second silencers, followed by disassembling the exhaust pipe and exhaust hood, thus increasing the cleaning efficiency during actual use.

[0010] As a preferred technical solution of this utility model, the connecting smoke pipe is an aluminum foil telescopic pipe mechanism that can be bent, and the opening and closing of the smoke inlet is connected to the smoke exhaust pipe through the connecting smoke pipe.

[0011] The above technical solution enables the opening and closing of the smoke inlet to be more stable when connected to the connecting pipe, thus increasing the stability of the equipment during installation.

[0012] As a preferred technical solution of this utility model, the inside of the smoke exhaust pipe is fixedly connected to the large-hole multi-tube silencer and the small-hole multi-tube silencer, and both the large-hole multi-tube silencer and the small-hole multi-tube silencer are provided with honeycomb-shaped pipe pores. The size of the pores inside the small-hole multi-tube silencer is smaller than that of the large-hole multi-tube silencer. The small-hole multi-tube silencer is connected to the smoke exhaust hood pipe.

[0013] The above technical solution enables the gas to be diverted through two sets of multi-tube silencers with different pore sizes, thereby better reducing noise during airflow transmission.

[0014] As a preferred technical solution of this utility model, a fixing plate is provided on the outside of the smoke exhaust pipe, and the smoke exhaust pipe is fixedly connected to the first silencer through the fixing plate, and the first silencer and the smoke exhaust pipe are fixedly connected to the upper cabinet through the fixing plate.

[0015] The above technical solution enables the exhaust pipe to be more stable when it is fixedly connected to the wall or the first silencer cover, thereby increasing the stability of the equipment during installation.

[0016] As a preferred technical solution of this utility model, the first silencer and the second silencer are fixedly connected by bolts, and the left end of the second silencer is provided with a fixing groove, the inner side of which is fixedly connected to the fan blade matrix and the outer side of the check valve.

[0017] The above technical solution enables the first and second silencers to be connected more stably, and the second silencer can limit and fix the fan blade matrix and check valve through the fixing groove, thereby increasing the stability of the equipment during installation.

[0018] As a preferred technical solution of this utility model, a drive motor is provided on the outside of the fan blade matrix, and a motor housing is provided on the outside of the drive motor for protection, and the drive motor is located on the top of the second silencer.

[0019] The above technical solution enables the drive motor to be fixed by the fan casing, and makes the operation of the drive motor driving the fan blade matrix more stable, thus increasing the stability of the equipment during operation.

[0020] As a preferred technical solution of this utility model, a fixing frame is provided on the outside of the fan blade matrix, and the fan blade matrix is ​​connected to the inside of the fixing groove through the fixing frame, and a micro motor is built into the check valve for driving.

[0021] The above technical solution enables the wind turbine matrix to be fixed by the fixing frame, thereby increasing the stability of the equipment during operation.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: By using the first and second silencers to silence the outside of the exhaust pipe and exhaust hood, the noise caused by the airflow inside the exhaust pipe and exhaust hood can be reduced. Furthermore, by setting large-hole multi-tube silencers and small-hole multi-tube silencers inside the exhaust pipe, the airflow itself can be silenced inside the exhaust pipe by passing through the large-hole multi-tube silencers and small-hole multi-tube silencers. Thus, the device can silence the airflow through two sets of silencers, increasing the silencer efficiency during use. Moreover, by dividing the device into an exhaust pipe and an exhaust hood, the device can be cleaned by removing the first and second silencers, and then disassembling the exhaust pipe and exhaust hood, thus increasing the cleaning efficiency during actual use.

[0023] Furthermore, the connection to the flue pipe makes the opening and closing of the smoke inlet more stable when connected to the connecting pipe, thus increasing the stability of the equipment during installation.

[0024] Furthermore, by setting a fixing groove at the left end of the second silencer, the second silencer can be made more stable when fixing the fan blade matrix and check valve, thereby increasing the stability of the equipment during installation. Attached Figure Description

[0025] Figure 1 This is a front view of the structure of this utility model;

[0026] Figure 2 This is a front view structural diagram of the present utility model;

[0027] Figure 3 This is a front view of the disassembled soundproof cover and smoke exhaust cover of this utility model.

[0028] Figure 4 This is a top view of the disassembled soundproof cover and smoke exhaust cover of this utility model.

[0029] Figure 5 This is a rear-view three-dimensional structural diagram showing the disassembly of the check valve and fan blade matrix of this utility model.

[0030] Figure 6 This is a three-dimensional schematic diagram showing the disassembly of the check valve and fan blade matrix of this utility model.

[0031] In the diagram: 1. Opening / closing smoke inlet; 2. Connecting smoke pipe; 3. First silencer; 4. Exhaust pipe; 5. Large-hole multi-pipe silencer; 6. Small-hole multi-pipe silencer; 7. Exhaust hood; 8. Second silencer; 9. Fixing plate; 10. Fixing groove; 11. Fan blade matrix; 12. Drive motor; 13. Check valve; 14. Fixing bracket; 15. Exhaust duct. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] To address the problem of difficulty in disassembling and cleaning existing silent fume hoods, the following solution is disclosed. Please refer to [link / reference]. Figures 1-6 This utility model provides a technical solution: a matrix-type silent smoke exhaust device, including an openable smoke inlet 1 and a connecting smoke pipe 2 provided at the top of the openable smoke inlet 1. The left end of the connecting smoke pipe 2 is connected to a smoke exhaust hood 7, and the left end of the smoke exhaust hood 7 is provided with a smoke exhaust duct 15.

[0034] The smoke hood 7 is provided with a second silencer 8 on the outside, and the right end of the smoke hood 7 is connected to the smoke pipe 4. The smoke hood 7 is connected to the connecting smoke pipe 2 through the smoke pipe 4. The smoke pipe 4 is provided with a first silencer 3 on the outside, and multiple sets of large-hole multi-pipe silencers 5 and small-hole multi-pipe silencers 6 are connected to the inside of the smoke pipe 4.

[0035] The smoke hood 7 is provided with a fan blade matrix 11 at the left end, and a check valve 13 is connected to the left end of the fan blade matrix 11. The fan blade matrix 11 and the check valve 13 are fixedly connected.

[0036] The connecting smoke pipe 2 is an aluminum foil telescopic pipe mechanism that can be bent, and the opening and closing smoke inlet 1 is connected to the exhaust pipe 4 through the connecting smoke pipe 2. The exhaust pipe 4 is fixedly connected to the large-hole multi-tube silencer 5 and the small-hole multi-tube silencer 6. Both the large-hole multi-tube silencer 5 and the small-hole multi-tube silencer 6 are provided with honeycomb-shaped pipe pores. The size of the pores inside the small-hole multi-tube silencer 6 is smaller than the size of the pores inside the large-hole multi-tube silencer 5. The small-hole multi-tube silencer 6 is connected to the exhaust hood 7.

[0037] A fixing plate 9 is provided on the outside of the smoke exhaust pipe 4, and the smoke exhaust pipe 4 is fixedly connected to the first silencer 3 through the fixing plate 9. The first silencer 3 and the smoke exhaust pipe 4 are fixedly connected to the upper cabinet through the fixing plate 9. The first silencer 3 and the second silencer 8 are fixedly connected by bolts, and the left end of the second silencer 8 is provided with a fixing groove 10. The inner side of the fixing groove 10 is fixedly connected to the outside of the fan blade matrix 11 and the check valve 13.

[0038] A drive motor 12 is provided on the outside of the fan blade matrix 11, and the drive motor 12 is protected by a motor housing. The drive motor 12 is located on the top of the second silencer 8. A fixing bracket 14 is provided on the outside of the fan blade matrix 11, and the fan blade matrix 11 is connected to the inside of the fixing groove 10 through the fixing bracket 14. The check valve 13 is driven by a micro motor inside.

[0039] Working Principle: When using this matrix-type silent smoke exhaust system, first connect the power supply to the grid. Then, the flue gas will be transmitted through the opening and closing smoke inlet 1 and the connecting smoke pipe 2 to the inside of the exhaust pipe 4. The airflow may impact the inner wall of the exhaust pipe 4, causing noise. The first silencer 3 absorbs and silences this noise. Simultaneously, the airflow also passes through the large-hole multi-tube silencer 5 and the small-hole multi-tube silencer 6, which further absorb and silence the noise of the airflow itself, thus reducing the noise level. The airflow is transmitted to the inside of the exhaust hood 7. At the same time, the inner wall of the exhaust hood 7 may be impacted by the airflow and generate noise. The second silencer hood 8 will absorb the noise to achieve the purpose of noise reduction. Then, the fan blade matrix 11 can be activated, so that the fan blade matrix 11 guides the airflow. The check valve 13 will also open automatically, so that the airflow is transmitted to the exhaust duct 15 for discharge. The drive motor 12 is connected to multiple fan modules through gears or belts to generate higher flow rate at a relatively low speed, which can further improve the intake power of the device when exhausting flue gas.

[0040] When the airflow enters the exhaust pipe 4, because the pipe aperture in the small-hole multi-tube silencer 6 is smaller than that in the large-hole multi-tube silencer 5, the airflow will be diverted again when it enters the small-hole multi-tube silencer 6, thereby reducing the noise. When disassembling the device, the fixing bolts between the first silencer 3 and the second silencer 8 can be removed, thereby removing the first silencer 3 and the second silencer 8. Then, the bolts on the fixing plate 9 on the outside of the exhaust pipe 4 can be removed for disassembly, thereby disconnecting the exhaust pipe 4 from the exhaust hood 7, making the disassembly and cleaning of the device more convenient.

[0041] The multi-tube structure design of the large-hole multi-tube silencer 5 and the small-hole multi-tube silencer 6 can smooth the airflow and reduce the secondary noise generated by turbulence and eddies. It is suitable for high-speed airflow scenarios. In addition, by combining with sound absorption, it covers a wide frequency range. The sound waves in the airflow are filtered into different frequency bands by the large-hole multi-tube silencer 5 and the small-hole multi-tube silencer 6. The sound waves of the same frequency band refracted in the tube cancel each other out some of the audio. Then it is transmitted to the next set of large-hole multi-tube silencers 5 or small-hole multi-tube silencers 6 to repeat the above process.

[0042] When the airflow sound waves enter the large-hole multi-tube silencer 5 and the small-hole multi-tube silencer 6, they are divided into small pipe gaps in multiple large-hole multi-tube silencers 5 or small-hole multi-tube silencers 6. The sound waves are more dispersed. When the sound waves enter the small pipe gaps, they are reflected due to multiple anti-abrupt changes, i.e., acoustic impedance mismatch. Some of the sound waves are reflected back to the source, reducing the energy of forward propagation, similar to echo cancellation. When sound waves with opposite phases are superimposed, some frequency sound waves will cancel each other out, especially effective for canceling mid-to-high frequency noise.

[0043] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A matrix-type silent smoke exhaust device, comprising an openable smoke inlet (1) and a connecting smoke pipe (2) provided at the top of the openable smoke inlet (1), wherein the left end of the connecting smoke pipe (2) is connected to a smoke exhaust hood (7), and the left end of the smoke exhaust hood (7) is provided with a smoke exhaust duct (15); Its features are: The smoke hood (7) is provided with a second silencer (8) on the outside, and the smoke hood (7) is connected to the right end of the smoke hood (7) with a smoke pipe (4). The smoke hood (7) is connected to the connecting pipe (2) through the smoke pipe (4). The smoke pipe (4) is provided with a first silencer (3) on the outside, and multiple sets of large-hole multi-pipe silencers (5) and small-hole multi-pipe silencers (6) are connected to the inside of the smoke pipe (4). The smoke hood (7) is provided with a fan blade matrix (11) at the left end, and a check valve (13) is connected to the left end of the fan blade matrix (11), and the fan blade matrix (11) and the check valve (13) are fixedly connected.

2. The matrix-type silent smoke exhaust system according to claim 1, characterized in that, The connecting smoke pipe (2) is an aluminum foil telescopic pipe mechanism that can be bent, and the opening and closing smoke inlet (1) is connected to the exhaust pipe (4) through the connecting smoke pipe (2).

3. The matrix-type silent smoke exhaust system according to claim 2, characterized in that, The smoke exhaust pipe (4) is fixedly connected to the large-hole multi-tube silencer (5) and the small-hole multi-tube silencer (6). Both the large-hole multi-tube silencer (5) and the small-hole multi-tube silencer (6) are provided with honeycomb-shaped pipe pores. The size of the pores inside the small-hole multi-tube silencer (6) is smaller than that of the large-hole multi-tube silencer (5). The small-hole multi-tube silencer (6) is connected to the smoke exhaust hood (7) pipe.

4. The matrix-type silent smoke exhaust system according to claim 3, characterized in that, The exhaust pipe (4) is provided with a fixing plate (9) on the outside, and the exhaust pipe (4) is fixedly connected to the first silencer (3) through the fixing plate (9), and the first silencer (3) and the exhaust pipe (4) are fixedly connected to the upper cabinet through the fixing plate (9).

5. The matrix-type silent smoke exhaust system according to claim 4, characterized in that, The first silencer (3) and the second silencer (8) are fixedly connected by bolts, and the left end of the second silencer (8) is provided with a fixing groove (10), the inner side of the fixing groove (10) is fixedly connected to the outer side of the fan blade matrix (11) and the check valve (13).

6. The matrix-type silent smoke exhaust system according to claim 5, characterized in that, The wind turbine matrix (11) is provided with a drive motor (12) on the outside, and the drive motor (12) is protected by a motor housing on the outside, and the drive motor (12) is located on top of the second silencer (8).

7. The matrix-type silent smoke exhaust system according to claim 6, characterized in that, The fan blade matrix (11) is provided with a fixing frame (14) on the outside, and the fan blade matrix (11) is connected to the inside of the fixing groove (10) through the fixing frame (14), and the check valve (13) is driven by a micro motor inside.

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