Low-noise range hood cabinet

Abstract

The utility model discloses a low noise range hood cabinet body, which comprises a smoke exhaust and noise reduction mechanism, a noise reduction loading and unloading mechanism and a loading and unloading auxiliary mechanism, the smoke exhaust and noise reduction mechanism comprises a driving box, a first sound insulation plate, a second sound insulation plate, an oil absorption fan and a rubber pad, the noise reduction loading and unloading mechanism comprises a clamping pipe, a clamping rod, a clamping groove, a transverse moving rod, a moving sleeve, a guide block and a guide groove, a first sound insulation plate and a second sound insulation plate are installed in the driving box, a rubber pad is installed at the bottom of the oil absorption fan, noise generated during machine operation is effectively reduced, and the use experience of a user is improved; through cooperation of a clamping pipe, a clamping rod, a clamping groove, a transverse moving rod, a moving sleeve, a guide block, a guide groove and other components, rapid clamping and separation of the clamping rod and the clamping pipe are achieved, the dismounting and mounting speed of the device is greatly increased, and cleaning and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and more specifically, to a low-noise range hood cabinet. Background Technology

[0002] In existing technologies, although the design of low-noise range hoods has taken into account the need for noise reduction, the lack of dedicated noise reduction components still results in significant noise generation during operation. This noise not only originates from the operation of the core components of the range hood but may also be affected by airflow and the internal structure of the device, as well as the collision of oil fumes. Excessive noise not only reduces the user experience but may also cause auditory fatigue and other discomfort during long-term use.

[0003] To reduce noise, traditional range hoods typically incorporate soundproof panels inside, utilizing their sound absorption and insulation properties to suppress noise transmission. However, in actual use, because range hoods need to handle a large amount of kitchen fumes, these fumes inevitably adhere to the surface of the soundproof panels, forming a layer of grease. The accumulation of grease not only reduces the sound absorption performance of the soundproof panels, affecting the noise reduction effect, but may also cause the surface of the soundproof panels to become sticky and emit odors, thus affecting indoor air quality.

[0004] Meanwhile, because the installation structure of sound insulation panels in existing technologies is usually relatively fixed, their disassembly and cleaning maintenance are not convenient enough, which further exacerbates the complexity of the problem. When a lot of oil stains accumulate on the surface of the sound insulation panel, it is difficult for users to quickly disassemble it for cleaning and maintenance, which makes the sound insulation panel remain in a state of declining efficiency for a long time. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a low-noise range hood cabinet to solve the technical problems mentioned in the background art, such as the lack of sound reduction components, which leads to loud operating noise of the device, and the fact that after the sound insulation board is used, the surface will be covered with oil stains, resulting in a decrease in noise reduction performance, and the sound insulation board is not easy to disassemble for cleaning and maintenance.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a low-noise range hood cabinet, comprising a smoke extraction and noise reduction mechanism, a noise reduction loading and unloading mechanism, and a loading and unloading auxiliary mechanism. The smoke extraction and noise reduction mechanism includes a drive box, a first sound insulation plate, a second sound insulation plate, an oil suction fan, and a rubber pad. The drive box is installed at the top of the device. The first and second sound insulation plates are fitted together and installed on the inner wall of the drive box. The oil suction fan is installed inside the drive box, and the rubber pad is installed at the bottom of the oil suction fan. The noise reduction loading and unloading mechanism includes a locking tube, a locking rod, a locking groove, a horizontal sliding rod, a moving sleeve, a guide block, and a guide groove. The locking rod can extend into the inside of the locking tube. The locking groove is located on the side wall of the locking rod. The horizontal sliding rod slides laterally through the side wall of the locking tube. The moving sleeve slides longitudinally on the outer wall of the locking tube. The guide block is installed at one end of the horizontal sliding rod. The guide groove is located inside the moving sleeve. The guide block and the guide groove are slidably connected. When the moving sleeve moves longitudinally, it drives the guide block to slide back and forth in the guide groove, causing the horizontal sliding rod to extend into or away from the locking groove.

[0009] The present invention is further configured such that the loading and unloading auxiliary mechanism includes a longitudinal plate, a fixed sleeve, a locking groove, a locking block, and a spring pin. The longitudinal plate is fixedly installed at the bottom end of the movable sleeve, the fixed sleeve is fixedly installed on the outer wall of the clamping tube, the locking groove is provided on the fixed sleeve, the locking block is installed at one end of the longitudinal plate, the movable sleeve slides downward to allow the locking block to extend into the locking groove, the spring pin is slidably installed on the fixed sleeve, and one end of the spring pin can press against the side of the longitudinal plate to fix the locking block in the locking groove, thereby fixing the movable ring on the outer wall of the clamping tube.

[0010] The present invention is further configured such that an oil fume extraction box is fixedly installed at the bottom of the drive box, and a baffle assembly is installed on the bottom end face of the oil fume extraction box. The oil extraction fan is connected to the inside of the oil fume extraction box. The baffle assembly prevents the backflow of oil fumes, ensures centralized emission of oil fumes, and improves the efficiency of the device.

[0011] The present invention is further provided that an installation plate is installed on the back end face of the fume extraction box, and the device is fixed in the required position by fixing the installation plate, and the device is stably installed in the wall or cabinet by fixing the installation plate, thereby improving the safety and applicability of the device.

[0012] The present invention is further configured such that a side plate is installed at the bottom side of the first sound insulation plate and the second sound insulation plate, and a connecting plate is installed at the bottom side wall of the clamping pipe, and the connecting plate is fixedly installed at the top end of the side plate. The side plate and the connecting plate enhance the stability of the overall structure of the device and facilitate the assembly between components.

[0013] The present invention is further configured such that one end of the snap-fit ​​rod is fixedly installed at the top end of the fume extraction box, and the other end of the snap-fit ​​rod extends through the side plate and cooperates with the snap-fit ​​tube for quick snap-fit. The snap-fit ​​rod and the snap-fit ​​tube improve the disassembly and assembly speed of the device and facilitate cleaning and maintenance.

[0014] The present invention is further configured such that a fixing plate is installed at each of the four ends of the oil-absorbing fan, and the fixing plate is provided with mounting holes, and an external bolt can pass through the mounting holes to fix the oil-absorbing fan to the top end of the oil-absorbing fume box. The fixing plate is used to install the oil-absorbing fan, and the mounting holes are used to pass through bolts to fix the oil-absorbing fan.

[0015] The present invention is further configured such that a lever plate is fixedly installed on the side wall of the spring pin, and the lever plate can be moved to move the spring pin away from the side of the longitudinal plate. The locking state of the spring pin can be easily controlled by moving the lever plate, which is simple and flexible to operate.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a low-noise range hood cabinet, which has the following beneficial effects:

[0018] This utility model is equipped with a smoke extraction and noise reduction mechanism. By installing a first sound insulation plate and a second sound insulation plate in the drive box, and installing a rubber pad at the bottom of the oil suction fan, the noise generated during machine operation is effectively reduced, improving the user experience. The oil suction fan is connected to the inside of the oil fume box to ensure that the oil fumes can be discharged in a concentrated manner and prevent backflow of oil fumes, thereby improving the efficiency of the device.

[0019] This utility model is equipped with a noise reduction loading and unloading mechanism. Through the cooperation of components such as the locking tube, locking rod, locking groove, horizontal moving rod, moving sleeve, guide block and guide groove, the locking rod and locking tube can be quickly locked and separated, which greatly improves the speed of disassembly and assembly of the sound insulation panel and facilitates cleaning and maintenance. The sliding connection between the guide block and the guide groove ensures the stability of the moving sleeve when moving longitudinally, thereby improving the structural stability of the entire device.

[0020] This utility model is equipped with a loading and unloading auxiliary mechanism. Through the cooperation of components such as longitudinal plate, fixed sleeve, locking groove, locking block and spring pin, the movable sleeve is fixed on the outer wall of the clamping pipe, which prevents the movable sleeve from sliding accidentally and improves the safety of the device. The locking state of the spring pin can be easily controlled by moving the lever, making the disassembly and assembly process simpler and more flexible, and convenient for users to operate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the device in this utility model from a side view.

[0023] Figure 3 This is a structural schematic diagram of the sound insulation panel installation method in this utility model;

[0024] Figure 4This is a schematic diagram of the noise reduction loading and unloading mechanism and the loading and unloading auxiliary mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the noise reduction loading and unloading mechanism and the loading and unloading auxiliary mechanism in this utility model.

[0026] In the diagram: 1. Drive box; 2. First sound insulation board; 3. Second sound insulation board; 4. Oil extraction fan; 5. Rubber pad; 6. Connecting pipe; 7. Connecting rod; 8. Locking slot; 9. Horizontal sliding rod; 10. Moving sleeve; 11. Guide block; 12. Guide groove; 13. Longitudinal plate; 14. Fixing sleeve; 15. Locking groove; 16. Locking block; 17. Spring pin; 18. Oil extraction box; 19. Baffle assembly; 20. Mounting plate; 21. Side plate; 22. Connecting plate; 23. Fixing plate; 24. Mounting hole; 25. Toggle plate. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5A low-noise range hood cabinet includes a smoke extraction and noise reduction mechanism, a noise reduction loading and unloading mechanism, and a loading and unloading auxiliary mechanism. The smoke extraction and noise reduction mechanism includes a drive box 1, a first sound insulation plate 2, a second sound insulation plate 3, an oil extraction fan 4, and a rubber pad 5. The drive box 1 is installed at the top of the device. The first sound insulation plate 2 and the second sound insulation plate 3 are fitted together and installed on the inner wall of the drive box 1. The oil extraction fan 4 is installed inside the drive box 1, and the rubber pad 5 is installed at the bottom of the oil extraction fan 4. The noise reduction loading and unloading mechanism includes a locking pipe 6, a locking rod 7, a locking groove 8, a horizontal sliding rod 9, and a moving sleeve 1. 0. Guide block 11 and guide groove 12, snap-fit ​​rod 7 can extend into snap-fit ​​tube 6, snap-fit ​​groove 8 is set on the side wall of snap-fit ​​rod 7, transverse sliding rod 9 is transversely slidably set on the side wall of snap-fit ​​tube 6, movable sleeve 10 is longitudinally slidably set on the outer wall of snap-fit ​​tube 6, guide block 11 is installed at one end of transverse sliding rod 9, guide groove 12 is set in movable sleeve 10, guide block 11 and guide groove 12 are slidably connected, movable sleeve 10 moves longitudinally, driving guide block 11 to slide back and forth in guide groove 12, so that transverse sliding rod 9 extends into or away from snap-fit ​​groove 8.

[0031] In this embodiment, a rubber pad 5 is provided at the bottom of the oil extraction fan 4 to absorb shock and reduce vibration noise caused by fan rotation. The first sound insulation plate 2 and the second sound insulation plate 3 are installed on the inner wall of the drive box 1, which can effectively block the noise generated by the fan during operation from spreading outward. The sound insulation plate reflects and absorbs sound, reducing noise leakage. Side plates 21 are installed at the bottom of the first sound insulation plate 2 and the second sound insulation plate 3, which are connected to the clamping pipe 6 through the connecting plate 22 to further stabilize the sound insulation structure and ensure that the noise of the oil extraction fan 4 when rotating at high speed does not spread through the bottom of the device. This allows the first sound insulation plate 2 and the second sound insulation plate 3 to be flexibly and quickly installed and removed, while remaining tight and stable in the working state. One end of the clamping rod 7 is fixedly installed on the top of the oil extraction box 18 and extends into the interior of the clamping pipe 6. A slot 8 is provided on the side wall of the snap-fit ​​rod 7, and a transverse sliding rod 9 is provided on the side wall of the snap-fit ​​tube 6. The transverse sliding rod 9 slides laterally and inserts into the slot 8 to achieve a fixed connection between the snap-fit ​​rod 7 and the snap-fit ​​tube 6. The movable sleeve 10 is installed on the outer wall of the snap-fit ​​tube 6 and can slide longitudinally along the snap-fit ​​tube 6. The guide block 11 is fixed to one end of the transverse sliding rod 9 and is slidably connected to the guide groove 12 inside the movable sleeve 10. When the movable sleeve 10 slides longitudinally, the guide block 11 moves back and forth in the guide groove 12, thereby driving the transverse sliding rod 9 to extend laterally into or out of the slot 8, realizing the loading and unloading operation of the first sound insulation panel 2 and the second sound insulation panel 3.

[0032] The loading and unloading auxiliary mechanism includes a longitudinal plate 13, a fixed sleeve 14, a locking groove 15, a locking block 16, and a spring pin 17. The longitudinal plate 13 is fixedly installed at the bottom end of the movable sleeve 10, the fixed sleeve 14 is fixedly installed on the outer wall of the clamping tube 6, the locking groove 15 is provided on the fixed sleeve 14, the locking block 16 is installed at one end of the longitudinal plate 13, the movable sleeve 10 slides downward to allow the locking block 16 to extend into the locking groove 15, and the spring pin 17 is slidably installed on the fixed sleeve 14. One end of the spring pin 17 can press against the side of the longitudinal plate 13 to fix the locking block 16 in the locking groove 15, so that the movable ring is fixed on the outer wall of the clamping tube 6.

[0033] In this embodiment, the longitudinal plate 13 is fixed to the bottom of the movable sleeve 10, and the locking block 16 is installed at one end of the longitudinal plate 13. When the movable sleeve 10 slides downward, it drives the longitudinal plate 13 to move, and the locking block 16 is inserted into the locking groove 15 on the fixed sleeve 14, thereby firmly fixing the movable sleeve 10 to the outer wall of the snap tube 6. The spring pin 17 is installed on the fixed sleeve 14, and one end of it can press against the side of the longitudinal plate 13 to fix the locking block 16 in the locking groove 15, which further enhances the stability of the locking structure. By moving the lever 25 on the side wall of the spring pin 17, the spring pin 17 can be moved away from the longitudinal plate 13, and the locking block 16 can be released, which facilitates the lateral adjustment of the transverse rod 9 by the movable sleeve 10.

[0034] Please see Figures 1-5 As a supplementary embodiment of a low-noise range hood cabinet for the smoke extraction and noise reduction mechanism, noise reduction loading and unloading mechanism, and loading and unloading auxiliary mechanism: A smoke extraction box 18 is fixedly installed at the bottom of the drive box 1, and a baffle assembly 19 is installed on the bottom end face of the smoke extraction box 18. The smoke extraction fan 4 communicates with the interior of the smoke extraction box 18. A mounting plate 20 is installed on the back end face of the smoke extraction box 18. The device is fixed in the required position by fixing the mounting plate 20. Side plates 21 are installed on the bottom side of the first sound insulation plate 2 and the second sound insulation plate 3, and a side plate 21 is installed on the bottom side wall of the clamping pipe 6. There is a connecting plate 22, which is fixedly installed on the top end of the side plate 21. One end of the snap-fit ​​rod 7 is fixedly installed on the top end of the fume extraction box 18. One end of the snap-fit ​​rod 7 extends through the side plate 21 and cooperates with the snap-fit ​​tube 6 for quick snap-fit. The four ends of the fume extraction fan 4 are equipped with fixing plates 23, and the fixing plates 23 are provided with mounting holes 24. External bolts can pass through the mounting holes 24 to fix the fume extraction fan 4 to the top end of the fume extraction box 18. The side wall of the spring pin 17 is fixedly equipped with a lever 25, and the lever 25 is moved to move the spring pin 17 away from the side of the vertical plate 13.

[0035] More specifically, a mounting plate 20 is provided on the back end of the fume extraction box 18. The device can be fixed to the desired kitchen location via the mounting plate 20, such as above the stove or near the exhaust duct. After the drive box 1 is started, the exhaust fan 4 operates at high speed, drawing the fumes through the fume extraction box 18. The design of the sound insulation panel and rubber pad 5 reduces the noise generated by the fan and airflow during the fume extraction process. The fume extraction box 18 and the baffle assembly 19 optimize the flow path of the fumes, improving the fume extraction efficiency. When necessary, the first sound insulation panel 2 and the second sound insulation panel 3 can be adjusted... During disassembly, the longitudinal sliding of the movable sleeve 10 drives the guide block 11 to slide within the guide groove 12, causing the transverse rod 9 to exit the slot 8, loosening the connection between the locking rod 7 and the locking tube 6, and removing it for maintenance or cleaning. If the device is to be reassembled, the locking rod 7 is inserted into the locking tube 6, and the movable sleeve 10 is pushed upward to allow the guide block 11 to drive the transverse rod 9 into the slot 8 to complete the connection. When the longitudinal plate 13 slides down, the locking block 16 is inserted into the locking groove 15, and at the same time, the spring pin 17 presses against the side of the longitudinal plate 13 to further lock the assembly position of the device.

[0036] In summary, during the use or operation of the overall equipment: when the smoke extraction and noise reduction mechanism is required, the bottom of the oil extraction fan 4 is equipped with a rubber pad 5 to absorb shock and reduce the vibration noise generated by the fan rotation. The first sound insulation plate 2 and the second sound insulation plate 3 are installed on the inner wall of the drive box 1, which can effectively block the noise generated by the fan during operation from spreading outward. The sound insulation plates reflect and absorb sound, reducing noise leakage. The bottom of the first sound insulation plate 2 and the second sound insulation plate 3 are equipped with side plates 21, which are connected to the clamping pipe 6 through the connecting plate 22 to further stabilize the sound insulation structure and ensure that the noise of the oil extraction fan 4 when rotating at high speed does not spread through the bottom of the device.

[0037] When the noise reduction loading and unloading mechanism is in operation, it enables flexible and rapid loading and unloading of the first sound insulation panel 2 and the second sound insulation panel 3, while maintaining tightness and stability during operation. One end of the locking rod 7 is fixedly installed on the top of the fume extraction box 18 and extends into the interior of the locking pipe 6. A slot 8 is provided on the side wall of the locking rod 7, and a transverse sliding rod 9 is provided on the side wall of the locking pipe 6. The transverse sliding rod 9 slides laterally and inserts into the slot 8, realizing the fixed connection between the locking rod 7 and the locking pipe 6. The movable sleeve 10 is installed on the outer wall of the locking pipe 6 and can slide longitudinally along the locking pipe 6. The guide block 11 is fixed to one end of the transverse sliding rod 9 and slides in the guide groove 12 inside the movable sleeve 10. When the movable sleeve 10 slides longitudinally, the guide block 11 reciprocates within the guide groove 12, thereby driving the transverse sliding rod 9 to extend laterally into or out of the slot 8, realizing the loading and unloading operation of the first sound insulation panel 2 and the second sound insulation panel 3.

[0038] When the auxiliary mechanism needs to be loaded and unloaded, the longitudinal plate 13 is fixed to the bottom of the movable sleeve 10, and the locking block 16 is installed at one end of the longitudinal plate 13. When the movable sleeve 10 slides down, it drives the longitudinal plate 13 to move, and the locking block 16 is inserted into the locking groove 15 on the fixed sleeve 14, thereby firmly fixing the movable sleeve 10 to the outer wall of the clamping tube 6. The spring pin 17 is installed on the fixed sleeve 14, and one end of it can press against the side of the longitudinal plate 13 to fix the locking block 16 in the locking groove 15, which further enhances the stability of the locking structure. By moving the lever 25 on the side wall of the spring pin 17, the spring pin 17 can be moved away from the longitudinal plate 13, and the locking block 16 can be released, which facilitates the lateral adjustment of the transverse rod 9 by the movable sleeve 10.

[0039] A mounting plate 20 is provided on the back end of the fume extraction box 18. The device can be fixed to the desired kitchen location via the mounting plate 20, such as above the stove or near the exhaust duct. After the drive box 1 is started, the exhaust fan 4 runs at high speed, drawing in fumes through the fume extraction box 18. The design of the sound insulation panel and rubber pad 5 reduces the noise generated by the fan and airflow during the fume extraction process. The fume extraction box 18 and the baffle assembly 19 optimize the flow path of the fumes, improving fume extraction efficiency. When it is necessary to disassemble the first sound insulation panel 2 and the second sound insulation panel 3... By sliding the movable sleeve 10 longitudinally, the guide block 11 slides in the guide groove 12, causing the transverse rod 9 to exit the slot 8, loosening the connection between the locking rod 7 and the locking tube 6, and removing it for maintenance or cleaning. If the device is to be reassembled, the locking rod 7 is inserted into the locking tube 6, and the movable sleeve 10 is pushed upward to allow the guide block 11 to drive the transverse rod 9 into the slot 8 to complete the connection. When the longitudinal plate 13 slides down, the locking block 16 is inserted into the locking groove 15, and at the same time, the spring pin 17 presses against the side of the longitudinal plate 13 to further lock the assembly position of the device.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A low-noise range hood cabinet, comprising a smoke extraction and noise reduction mechanism, a noise reduction loading and unloading mechanism, and a loading and unloading auxiliary mechanism, characterized in that: The smoke extraction and noise reduction mechanism includes a drive box (1), a first sound insulation plate (2), a second sound insulation plate (3), an oil suction fan (4), and a rubber pad (5). The drive box (1) is installed at the top of the device. The first sound insulation plate (2) and the second sound insulation plate (3) are fitted together on the inner wall of the drive box (1). The oil suction fan (4) is installed inside the drive box (1). The rubber pad (5) is installed at the bottom of the oil suction fan (4). The noise reduction mounting and dismounting mechanism includes a clamping pipe (6), a clamping rod (7), a clamping slot (8), and a horizontal moving rod (9). The device includes a movable sleeve (10), a guide block (11), and a guide groove (12). The snap-fit ​​rod (7) can extend into the snap-fit ​​tube (6). The snap groove (8) is set on the side wall of the snap-fit ​​rod (7). The transverse sliding rod (9) is slidably installed on the side wall of the snap-fit ​​tube (6). The movable sleeve (10) is slidably installed on the outer wall of the snap-fit ​​tube (6). The guide block (11) is installed at one end of the transverse sliding rod (9). The guide groove (12) is set inside the movable sleeve (10). The guide block (11) and the guide groove (12) are slidably connected.

2. The low-noise range hood cabinet according to claim 1, characterized in that: The loading and unloading auxiliary mechanism includes a longitudinal plate (13), a fixed sleeve (14), a locking groove (15), a locking block (16), and a spring pin (17). The longitudinal plate (13) is fixedly installed at the bottom end of the movable sleeve (10). The fixed sleeve (14) is fixedly installed on the outer wall of the clamping tube (6). The locking groove (15) is set on the fixed sleeve (14). The locking block (16) is installed at one end of the longitudinal plate (13). The movable sleeve (10) slides downward to allow the locking block (16) to extend into the locking groove (15). The spring pin (17) is slidably installed on the fixed sleeve (14). One end of the spring pin (17) can press against the side of the longitudinal plate (13).

3. The low-noise range hood cabinet according to claim 1, characterized in that: The bottom of the drive box (1) is fixedly equipped with an oil fume box (18), and a baffle assembly (19) is installed on the bottom end face of the oil fume box (18). The oil fume fan (4) is connected to the inside of the oil fume box (18).

4. The low-noise range hood cabinet according to claim 3, characterized in that: The back end face of the fume extraction box (18) is provided with an installation plate (20), and the device is fixed in the required position by fixing the installation plate (20).

5. A low-noise range hood cabinet according to claim 3, characterized in that: Side plates (21) are installed on the bottom side of the first sound insulation plate (2) and the second sound insulation plate (3), and a connecting plate (22) is installed on the bottom side wall of the clamping pipe (6), and the connecting plate (22) is fixedly installed on the top end of the side plate (21).

6. A low-noise range hood cabinet according to claim 5, characterized in that: One end of the snap-fit ​​rod (7) is fixedly installed at the top of the fume extraction box (18), and the other end of the snap-fit ​​rod (7) extends through the side plate (21) and engages with the snap-fit ​​tube (6) for quick snap-fit.

7. A low-noise range hood cabinet according to claim 1, characterized in that: The oil-absorbing fan (4) is equipped with a fixing plate (23) at each of its four ends, and the fixing plate (23) has a mounting hole (24) on it. An external bolt can pass through the mounting hole (24) to fix the oil-absorbing fan (4) to the top of the oil-absorbing fume box (18).

8. A low-noise range hood cabinet according to claim 2, characterized in that: A lever plate (25) is fixedly installed on the side wall of the spring pin (17), and the lever plate (25) is moved to move the spring pin (17) away from the side of the longitudinal plate (13).

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