All-steel ventilation cabinet with good noise reduction effect

Abstract

The utility model discloses an all-steel ventilation cabinet with a good noise reduction effect, which belongs to the technical field of all-steel ventilation cabinets and comprises a cabinet body, an operation chamber, an exhaust chamber, an exhaust component and an exhaust frame. The exhaust connector is connected to the top of the exhaust frame in a conducting mode, and a noise reduction assembly is installed on the front face of the exhaust chamber of the cabinet body. A noise reduction assembly is installed on the front face of an exhaust chamber of the cabinet body, a panel is attached to the front face of the exhaust chamber, and then a locking piece penetrates through an installation base to be fixed in an installation hole. Noise generated when the exhaust assembly in the exhaust chamber works can penetrate through the sound absorption holes of the inner lining plate to enter the sound insulation plate, then the noise is reflected and absorbed for multiple times through the sound absorption bosses, the good noise reduction performance is achieved, and the comfort level of the working environment is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of all-steel fume hoods, and more specifically, to an all-steel fume hood with good noise reduction effect. Background Technology

[0002] All-steel fume hoods are one of the most commonly used local exhaust ventilation devices in laboratories. There are many types, and their exhaust effects vary depending on their structure and the conditions under which they are used. The performance of an all-steel fume hood primarily depends on the speed at which air moves through it.

[0003] A search revealed an all-steel fume hood with publication number CN219211020U, comprising a cabinet body and doors made entirely of steel. The cabinet body has an internal mounting plate with a baffle plate near the cabinet opening. A fan is mounted on the top of the cabinet, and the fan's outlet is connected to an exhaust pipe. The baffle plate and mounting plate are detachably connected via multiple fixing mechanisms. Two doors are symmetrically positioned above and below the cabinet opening. A drive mechanism on the cabinet body drives the two doors to move synchronously. Multiple fixing mechanisms are mounted on the mounting plate, each including a housing, a locking block, and a first spring. This invention facilitates the disassembly and cleaning of the baffle plate through the fixing mechanisms. With the drive mechanism and the two doors, the fume hood can open in opposite directions during exhaust, achieving a large opening angle with a small door movement distance.

[0004] The exhaust end of the all-steel fume hood is equipped with an exhaust system. When the exhaust fan of the exhaust system is working, noise is generated, which reduces the comfort of the working environment. Therefore, we have proposed an all-steel fume hood with good noise reduction effect to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide an all-steel fume hood with good noise reduction effect. The noise reduction component is installed on the front of the exhaust chamber of the cabinet, and the panel is attached to the front of the exhaust chamber. Then, a locking piece is used to fix it inside the mounting hole through the mounting base. When the exhaust component inside the exhaust chamber is working, the noise generated will pass through the sound absorption holes of the inner lining plate, enter the sound insulation plate, and then be reflected and absorbed multiple times by the sound absorption protrusions, which has a good noise reduction performance and improves the comfort of the working environment.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A noise reduction all-steel fume hood includes a cabinet body, an operating chamber and an exhaust chamber disposed on the surface of the cabinet body, an exhaust component installed inside the exhaust chamber, an exhaust frame connected to the top of the cabinet body, and an exhaust connector connected to the top of the exhaust frame. The noise reduction component is installed on the front of the exhaust chamber of the cabinet body.

[0010] The noise reduction assembly includes a panel pressed against the opening of the exhaust chamber, a sound insulation board bonded to the inner surface of the panel, sound-absorbing protrusions equidistantly mounted on the surface of the sound insulation board, an inner lining board mounted on the surface of the sound insulation board, and sound-absorbing holes formed on the surface of the inner lining board. The noise reduction assembly is installed on the front of the exhaust chamber of the cabinet. The panel is attached to the front of the exhaust chamber and then secured inside the mounting hole using locking devices that pass through the mounting base. Noise generated by the exhaust assembly inside the exhaust chamber during operation passes through the sound-absorbing holes in the inner lining board, enters the sound insulation board, and is then repeatedly reflected and absorbed by the sound-absorbing protrusions, resulting in excellent noise reduction performance and improved working environment comfort.

[0011] Preferably, the surface of the cabinet is provided with mounting holes, and the bottom of the panel is fixedly connected to a mounting base, the mounting base and the mounting holes being corresponding.

[0012] Preferably, a sealing ring is adhered to the inner surface of the panel, and the sealing ring is fitted onto the outer part of the inner lining plate.

[0013] Preferably, a sound-absorbing cavity is provided between the inner lining plate and the sound insulation plate, and the sound-absorbing holes on the surface of the inner lining plate extend to one side of the sound-absorbing protrusion.

[0014] Preferably, the exhaust frame is fitted with a base support, and a positioning seat is fixedly connected to the surface of the base support.

[0015] Preferably, a sound-absorbing cotton frame is fixedly connected to the surface of the base, and a sound-absorbing cotton board is fixedly connected to the top opening of the sound-absorbing cotton frame.

[0016] Preferably, the surface of the sound-absorbing cotton board has a reserved hole, and the exhaust connector passes through the reserved hole of the sound-absorbing cotton board.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) The cabinet in this solution has a noise reduction component installed on the front of the exhaust chamber. The panel is attached to the front of the exhaust chamber and then the locking piece is used to fix it inside the mounting hole through the mounting base. The noise generated by the exhaust component inside the exhaust chamber when it is working will pass through the sound absorption hole of the inner lining plate and enter the sound insulation board. Then the noise will be reflected and absorbed multiple times by the sound absorption boss, which has a good noise reduction performance and improves the comfort of the working environment.

[0020] (2) The exhaust frame of this solution is fitted with a base, and the sound-absorbing cotton frame of the base, together with the sound-absorbing cotton board, provides sound insulation for the noise inside the exhaust frame, which has a good noise reduction effect. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the cabinet and exhaust connector structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the cabinet body and sound-absorbing cotton board structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the panel and inner lining of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Cabinet; 2. Control room; 3. Panel; 4. Mounting base; 5. Exhaust connector; 6. Sound-absorbing cotton board; 7. Mounting hole; 8. Exhaust chamber; 9. Reserved hole; 10. Sound-absorbing cotton frame; 11. Base support; 12. Positioning seat; 13. Exhaust frame; 14. Sealing ring; 15. Sound insulation board; 16. Sound-absorbing boss; 17. Inner lining board; 18. Sound-absorbing hole. Detailed Implementation

[0027] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Example 1:

[0029] Please see Figure 1-4 A noise reduction all-steel fume hood includes a cabinet body 1, an operating chamber 2 and an exhaust chamber 8 disposed on the surface of the cabinet body 1, an exhaust component installed inside the exhaust chamber 8, an exhaust frame 13 connected to the top of the cabinet body 1, and an exhaust connector 5 connected to the top of the exhaust frame 13. A noise reduction component is installed on the front of the exhaust chamber 8 of the cabinet body 1.

[0030] The noise reduction assembly includes a panel 3 pressed onto the opening of the exhaust chamber 8, a sound insulation plate 15 bonded to the inner surface of the panel 3, sound-absorbing protrusions 16 equidistantly mounted on the surface of the sound insulation plate 15, an inner lining plate 17 mounted on the surface of the sound insulation plate 15, and sound-absorbing holes 18 formed on the surface of the inner lining plate 17.

[0031] The surface of the cabinet 1 has mounting holes 7. The bottom of the panel 3 is fixedly connected to a mounting base 4, which corresponds to the mounting holes 7. A sealing ring 14 is bonded to the inner surface of the panel 3. The sealing ring 14 is fitted on the outside of the inner lining plate 17. A sound-absorbing cavity is provided between the inner lining plate 17 and the sound insulation plate 15. The sound-absorbing holes 18 on the surface of the inner lining plate 17 extend to one side of the sound-absorbing protrusion 16.

[0032] It should be noted that a noise reduction component is installed on the front of the exhaust chamber 8 of the cabinet 1. The panel 3 is attached to the front of the exhaust chamber 8 and then fixed inside the mounting hole 7 by a locking piece through the mounting base 4. The noise generated by the exhaust component inside the exhaust chamber 8 when it is working will pass through the sound absorption holes 18 of the inner lining plate 17 and enter the sound insulation plate 15. Then, the noise will be reflected and absorbed multiple times by the sound absorption protrusions 16, which has a good noise reduction performance and improves the comfort of the working environment.

[0033] See Figure 1-4 The exhaust frame 13 is fitted with a base 11. A positioning seat 12 is fixedly connected to the surface of the base 11. A sound-absorbing cotton frame 10 is fixedly connected to the surface of the base 11. A sound-absorbing cotton plate 6 is fixedly connected to the top opening of the sound-absorbing cotton frame 10. A reserved hole 9 is opened on the surface of the sound-absorbing cotton plate 6. The exhaust connector 5 passes through the reserved hole 9 of the sound-absorbing cotton plate 6.

[0034] It should be noted that the exhaust frame 13 is fitted with a base support 11. The sound-absorbing cotton frame 10 of the base support 11, together with the sound-absorbing cotton plate 6, provides sound insulation for the noise inside the exhaust frame 13, and has a very good noise reduction effect.

[0035] In use: A noise reduction component is installed on the front of the exhaust chamber 8 of the cabinet 1. The panel 3 is attached to the front of the exhaust chamber 8 and then fixed inside the mounting hole 7 by a locking piece through the mounting base 4. The noise generated by the exhaust component inside the exhaust chamber 8 during operation will pass through the sound absorption holes 18 of the inner lining plate 17 and enter the sound insulation plate 15. Then, the noise will be reflected and absorbed multiple times by the sound absorption protrusions 16, which has a good noise reduction performance and improves the comfort of the working environment. The exhaust frame 13 is fitted with a base support 11. The sound absorption cotton frame 10 of the base support 11, together with the sound absorption cotton plate 6, provides sound insulation for the noise inside the exhaust frame 13, which has a good noise reduction effect.

[0036] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A noise-reducing all-steel fume hood, comprising a cabinet body (1), an operating chamber (2) and an exhaust chamber (8) disposed on the surface of the cabinet body (1), an exhaust assembly installed inside the exhaust chamber (8), an exhaust frame (13) connected to the top of the cabinet body (1), and an exhaust connector (5) connected to the top of the exhaust frame (13), characterized in that: The front position of the exhaust chamber (8) of the cabinet body (1) is provided with a noise reduction assembly; The noise reduction assembly comprises a panel (3) pressed on the opening position of the exhaust chamber (8), a sound insulation board (15) bonded on the inner surface of the panel (3), sound absorption bosses (16) installed equidistantly on the surface of the sound insulation board (15), an inner lining board (17) erected on the surface of the sound insulation board (15), and sound absorption holes (18) opened on the surface of the inner lining board (17).

2. The full-steel fume hood with good noise reduction effect according to claim 1, characterized in that: The surface of the cabinet body (1) is provided with a mounting hole (7), and the bottom of the panel (3) is fixedly connected with a mounting seat (4).

3. The full-steel fume hood with good noise reduction effect according to claim 1, characterized in that: The inner surface of the panel (3) is bonded with a sealing ring (14), and the sealing ring (14) is sleeved on the outer position of the inner lining board (17).

4. The full-steel fume hood with good noise reduction effect according to claim 1, characterized in that: The sound absorption cavity is arranged between the inner lining board (17) and the sound insulation board (15), and the sound absorption holes (18) on the surface of the inner lining board (17) extend to one side of the sound absorption boss (16).

5. The full-steel fume hood with good noise reduction effect according to claim 1, characterized in that: The outer part of the exhaust frame (13) is sleeved with a bottom support (11), and the surface of the bottom support (11) is fixedly connected with a positioning seat (12).

6. The full-steel fume hood with good noise reduction effect according to claim 5, characterized in that: The surface of the bottom support (11) is fixedly connected with a sound absorption cotton frame (10), and the top opening position of the sound absorption cotton frame (10) is fixedly connected with a sound absorption cotton board (6).

7. The full-steel fume hood with good noise reduction effect according to claim 6, characterized in that: The surface of the sound absorption cotton board (6) is provided with a reserved hole (9), and the exhaust joint (5) penetrates through the reserved hole (9) of the sound absorption cotton board (6).

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