Low-noise centrifugal fan with anti-vibration effect

Abstract

The low-noise centrifugal fan with the anti-seismic effect comprises a noise reduction shell, an air inlet pipe, a hinge base, a filtering assembly, a centrifugal fan body and an air outlet pipe, a sound insulation pad is arranged in the noise reduction shell, an anti-seismic assembly is arranged above the sound insulation pad, and the anti-seismic assembly is arranged below the centrifugal fan body; according to the scheme, the sound insulation pad is a foam pad, the number of air holes in the sound insulation pad is large, the noise reduction shell and the sound insulation pad reduce transmission of sound of the centrifugal fan body and reduce noise, when the centrifugal fan body works, downward vibration of the centrifugal fan body can be blocked and buffered through the anti-vibration assembly, and by means of the design, vibration transmission of the noise reduction shell is reduced through the anti-vibration assembly; and the noise reduction shell and the sound insulation pad can wrap the periphery of the centrifugal fan body, noise transmission of the centrifugal fan body is reduced, and the practicability of the centrifugal fan body in a quiet environment or a noise-sensitive place is improved.

Description

Technical Field

[0001] This application relates to the technical field of low-noise centrifugal fans with good seismic resistance, and particularly relates to a low-noise centrifugal fan with seismic resistance. Background Art

[0002] A fan is a machine used to transport gas. From an energy perspective, it is a machine that converts the mechanical energy of a prime mover into gas energy. And a fan is a customary abbreviation for a gas compression and gas transportation machine.

[0003] During the operation of a centrifugal fan, the air flow enters the blade space axially from the fan, and then rotates with the impeller under the drive of the impeller on the one hand; on the other hand, it increases energy under the action of inertia and leaves the impeller in the radial direction. A fan that does work by generating centrifugal force is called a centrifugal fan.

[0004] Centrifugal fans need to reduce noise in many scenarios, especially in places where a quiet environment is required or where noise is sensitive. In commercial buildings and offices, fans are usually used in ventilation and air conditioning systems. In these places, a quiet working environment is crucial for the work efficiency and comfort of employees. Therefore, it is necessary to reduce the noise generated by the fan and reduce the impact of the fan on the office environment. Therefore, those skilled in the art have provided a low-noise centrifugal fan with seismic resistance to solve the problems raised in the above background art. Utility Model Content

[0005] To solve the problems raised in the above background art, this application provides a low-noise centrifugal fan with seismic resistance.

[0006] The low-noise centrifugal fan with seismic resistance provided by this application adopts the following technical solutions:

[0007] A low-noise centrifugal fan with seismic resistance includes a noise reduction shell. One side of the noise reduction shell is fixedly connected with an air inlet pipe. A hinge seat is arranged inside the air inlet pipe, and a filtering component is rotatably arranged on the hinge seat. The filtering component is located inside the air inlet pipe;

[0008] A centrifugal fan body is arranged inside the noise reduction shell. An air outlet pipe is arranged above the noise reduction shell. The air outlet pipe is docked with the centrifugal fan body, and the air inlet pipe is docked with the inlet end of the air outlet pipe;

[0009] A sound insulation pad is arranged inside the noise reduction shell, and a seismic resistance component is arranged above the sound insulation pad. The seismic resistance component is arranged below the centrifugal fan body.

[0010] In some embodiments, the filtering component includes a protective shell rotatably arranged on the hinge seat. The center of the protective shell is a hollow structure, and a filter screen is slidably inserted inside the protective shell.

[0011] In some embodiments, a buckle is slidably inserted on the upper side of the air inlet duct, the lower side of the buckle is fitted with a side of the protective shell, and a wrench is fixedly connected to one side of the buckle, and the wrench extends to a side away from the noise reduction shell.

[0012] In some embodiments, one side of the buckle is fixedly connected to a limiting slider, the limiting slider is located inside the air inlet pipe and slides, a spring is provided inside the air inlet pipe, and the spring is located above the limiting slider.

[0013] In some embodiments, the sound insulation pad covers the inner wall surface of the noise reduction shell, and a sealing pad is provided at the connection between the sound insulation pad and the air inlet pipe and the air outlet pipe.

[0014] In some embodiments, the anti-seismic component is located on the second bottom plate below the centrifugal fan body, the inner wall of the noise reduction shell is fixedly connected to the first bottom plate, a rubber ring is arranged between the first bottom plate and the second bottom plate, a support plate and a rubber pad are arranged inside the rubber ring, a fixing bolt is arranged inside the support plate, and there are multiple fixing bolts, one ends of which are respectively inserted into the first bottom plate and the second bottom plate.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] (1) The worker first fits the sound insulation pad to the inner wall of the noise reduction shell. The sound insulation pad is a foam pad with many pores inside. The noise reduction shell and the sound insulation pad reduce the propagation of the sound of the centrifugal fan body and reduce the noise. The worker places the anti-seismic component at the bottom of the noise reduction shell. The anti-seismic component is mainly made of rubber. Then the centrifugal fan body is placed on top of the anti-seismic component. When the centrifugal fan body is working, the downward vibration of the centrifugal fan body will be blocked and buffered by the anti-seismic component to reduce the noise generation. The worker connects the output end of one side of the centrifugal fan body with the air inlet pipe. Docking, a filter assembly is installed inside the air inlet duct, the filter assembly will filter the inside of the air inlet duct, the air inlet duct will limit the filter assembly, reduce the debris passing through the inside of the centrifugal fan body inside the air inlet duct, and reduce the damage to the internal parts of the centrifugal fan body. This design reduces the transmission of vibration to the noise reduction shell through the anti-seismic component and reduces the generation of noise. The noise reduction shell and sound insulation pad will wrap the four sides of the centrifugal fan body to reduce the transmission of noise from the centrifugal fan body and increase the practicality of the centrifugal fan body in quiet environments or noise-sensitive places.

[0017] (2) The first bottom plate is fixed above the interior of the noise reduction housing. Above the first bottom plate, the rubber ring and the second bottom plate are supported. The second bottom plate fixes the lower part of the centrifugal fan body. The rubber ring has good ductility and elasticity, and can buffer vibrations. The interior of the rubber ring is filled with support plates and rubber pads. There are multiple support plates and rubber pads, and the multiple support plates and rubber pads are stacked in sequence. The support plates increase the support of the rubber ring, making the support stability of the rubber ring increase and reducing the skew of the rubber ring. The stacking of the support plates and rubber pads has good buffering performance for the centrifugal fan body. The support plates are fixed to the first bottom plate and the second bottom plate respectively through fixing bolts, increasing stability. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the overall structure in an embodiment of the present application;

[0019] Figure 2 is a schematic structural diagram of a side cross-section in an embodiment of the present application;

[0020] Figure 3 is in an embodiment of the present application Figure 2 a schematic structural diagram of part A therein;

[0021] Figure 4 is in an embodiment of the present application Figure 2 a schematic structural diagram of part B therein.

[0022] Description of the Reference Numerals: 1, noise reduction housing; 2, air inlet pipe; 21, hinge seat; 3, filter assembly; 31, protective housing; 32, filter screen; 4, air outlet pipe; 5, centrifugal fan body; 6, sound insulation pad; 7, seismic component; 71, first bottom plate; 72, second bottom plate; 73, rubber ring; 74, support plate; 75, rubber pad; 76, fixing bolt; 8, buckle; 81, wrench; 82, limit slider; 83, spring. Detailed Description of the Embodiment

[0023] The following is a further detailed description of the present application in conjunction with the attached Figures 1-4 drawings.

[0024] An embodiment of the present application discloses a low-noise centrifugal fan with seismic effect. Refer to Figures 1-4A low-noise centrifugal fan with earthquake-proof effect comprises a noise reduction shell 1 and a centrifugal fan body 5, one side of the noise reduction shell 1 is fixedly connected with an air inlet pipe 2, a hinge seat 21 is arranged inside the air inlet pipe 2, a filter assembly 3 is rotatably arranged on the hinge seat 21, the filter assembly 3 is located inside the air inlet pipe 2, the centrifugal fan body 5 is arranged inside the noise reduction shell 1, an air outlet pipe 4 is arranged above the noise reduction shell 1, the air outlet pipe 4 is docked with the centrifugal fan body 5, the air inlet pipe 2 is docked with the inlet end of the air outlet pipe 4, a sound insulation pad 6 is arranged inside the noise reduction shell 1, an earthquake-proof assembly 7 is arranged above the sound insulation pad 6, and the earthquake-proof assembly 7 is arranged below the centrifugal fan body 5;

[0025] In this way, during the implementation process, when the worker needs to use the centrifugal fan body 5, the worker first fits the sound insulation pad 6 to the inner wall of the noise reduction shell 1. The sound insulation pad 6 is a foam pad with many pores inside the sound insulation pad 6. The noise reduction shell 1 and the sound insulation pad 6 reduce the propagation of the sound of the centrifugal fan body 5 and reduce the noise. The worker places the anti-seismic component 7 at the bottom of the noise reduction shell 1. The anti-seismic component 7 is mainly made of rubber. Then, the centrifugal fan body 5 is placed above the anti-seismic component 7. When the centrifugal fan body 5 is working, the downward vibration of the centrifugal fan body 5 will be blocked and buffered by the anti-seismic component 7 to reduce the generation of noise.

[0026] The worker connects the output end of one side of the centrifugal fan body 5 with the air inlet pipe 2, and installs the filter assembly 3 inside the air inlet pipe 2. The filter assembly 3 will filter the inside of the air inlet pipe 2, and the air inlet pipe 2 will limit the filter assembly 3 to reduce the passage of debris through the inside of the centrifugal fan body 5 inside the air inlet pipe 2 and reduce damage to the internal parts of the centrifugal fan body 5. This design reduces the transmission of vibration to the noise reduction shell 1 through the anti-seismic component 7 and reduces the generation of noise. The noise reduction shell 1 and the sound insulation pad 6 will wrap the four sides of the centrifugal fan body 5 to reduce the transmission of noise from the centrifugal fan body 5 and increase the practicality of the centrifugal fan body 5 in a quiet environment or in noise-sensitive places.

[0027] Among them, the filter assembly 3 includes a protective shell 31 rotatably set on the hinge seat 21. The center of the protective shell 31 is a hollow structure. A filter screen 32 is slidably inserted inside the protective shell 31. The protective shell 31 is rotatably installed inside the air inlet pipe 2. The protective shell 31 is rotated through the hinge seat 21. One side of the protective shell 31 is rotated. A window is opened on the top of the protective shell 31. Workers insert the filter screen 32 into the interior of the protective shell 31. The center of the protective shell 31 facilitates the circulation of air, thereby increasing the air circulation performance of the air inlet pipe 2 during use.

[0028] Preferably, a buckle 8 is slidably inserted on the upper part of the air inlet pipe 2, and the lower part of the buckle 8 is fitted with one side of the protective shell 31, and a wrench 81 is fixedly connected to one side of the buckle 8, and the wrench 81 extends to a side away from the noise reduction shell 1;

[0029] The worker inserts the buckle 8 into the interior of the air inlet pipe 2. One side of the buckle 8 abuts against the protective shell 31. When the protective shell 31 is located inside the air inlet pipe 2, the buckle 8 vertically fixes the protective shell 31 inside the air inlet pipe 2, increasing the stability of the filter screen 32 located inside the air inlet pipe 2.

[0030] Specifically, a limiting slider 82 is fixedly connected to one side of the buckle 8. The limiting slider 82 slides inside the air inlet pipe 2. A spring 83 is arranged inside the air inlet pipe 2. The spring 83 is located above the limiting slider 82. The limiting slider 82 limits the buckle 8. When the worker places the protective shell 31 into the interior of the air inlet pipe 2, the spring 83 will be compressed downward. The spring 83 supports the limiting slider 82, and the limiting slider 82 drives the buckle 8 to slide downward. When the buckle 8 fits the protective shell 31, the stability of the fit between the buckle 8 and the protective shell 31 is increased.

[0031] More specifically, the sound insulation pad 6 covers the inner wall surface of the noise reduction shell 1. A sealing gasket is arranged at the connection between the sound insulation pad 6 and the air inlet pipe 2 and the air outlet pipe 4. There will be gaps between the air inlet pipe 2 and the air outlet pipe 4 and the sound insulation pad 6. The worker seals the connection between the sound insulation pad 6 and the air inlet pipe 2 and the air outlet pipe 4 through the sealing gasket, blocking the transmission of sound. The sealing gasket is made of rubber material.

[0032] During further implementation, the seismic component 7 is located on the second bottom plate 72 below the centrifugal fan body 5. The first bottom plate 71 is fixedly connected to the inner wall of the noise reduction shell 1. A rubber ring 73 is arranged between the first bottom plate 71 and the second bottom plate 72. A support plate 74 and a rubber pad 75 are arranged inside the rubber ring 73. A fixing bolt 76 is arranged inside the support plate 74. There are multiple fixing bolts 76. One ends of the multiple fixing bolts 76 are respectively inserted into the interiors of the first bottom plate 71 and the second bottom plate 72;

[0033] The worker fixes the first bottom plate 71 above the interior of the noise reduction shell 1. The first bottom plate 71 supports the rubber ring 73 and the second bottom plate 72 above. The second bottom plate 72 fixes the lower part of the centrifugal fan body 5. The rubber ring 73 has good ductility and elasticity and can buffer vibrations. The interior of the rubber ring 73 is filled with the support plate 74 and the rubber pad 75. There are multiple support plates 74 and rubber pads 75. The multiple support plates 74 and rubber pads 75 are stacked in sequence. The support plate 74 increases the support of the rubber ring 73, increasing the support stability of the rubber ring 73 and reducing the skew of the rubber ring 73. The stacking of the support plate 74 and the rubber pad 75 has good buffering performance for the centrifugal fan body 5. The support plate 74 is fixed to the first bottom plate 71 and the second bottom plate 72 respectively through the fixing bolt 76, increasing the stability.

[0034] The implementation principle of a low-noise centrifugal fan with anti-seismic effect in the embodiment of the present application is as follows: when a worker needs to use the centrifugal fan body 5, the worker first fits the sound insulation pad 6 to the inner wall of the noise reduction shell 1. The sound insulation pad 6 is a foam pad. The sound insulation pad 6 has many pores inside. The noise reduction shell 1 and the sound insulation pad 6 reduce the propagation of the sound of the centrifugal fan body 5 and reduce the noise. The worker places the anti-seismic component 7 at the bottom of the noise reduction shell 1. The anti-seismic component 7 is mainly made of rubber. Then, the centrifugal fan body 5 is placed above the anti-seismic component 7. When the centrifugal fan body 5 is working, the downward vibration of the centrifugal fan body 5 will be blocked and buffered by the anti-seismic component 7 to reduce the generation of noise. A person connects the output end of one side of the centrifugal fan body 5 with the air inlet pipe 2, and installs a filter assembly 3 inside the air inlet pipe 2. The filter assembly 3 will filter the inside of the air inlet pipe 2, and the air inlet pipe 2 will limit the filter assembly 3 to reduce the passage of debris through the inside of the centrifugal fan body 5 inside the air inlet pipe 2 and reduce damage to the internal parts of the centrifugal fan body 5. Such a design reduces the transmission of vibration to the noise reduction shell 1 through the anti-vibration assembly 7 and reduces the generation of noise. The noise reduction shell 1 and the sound insulation pad 6 will wrap the four sides of the centrifugal fan body 5 to reduce the transmission of noise from the centrifugal fan body 5 and increase the practicality of the centrifugal fan body 5 in a quiet environment or in noise-sensitive places.

[0035] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0036] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0037] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A low-noise centrifugal fan with earthquake resistance effect, characterized in that, Including: A noise reduction shell (1), one side of the noise reduction shell (1) is fixedly connected with an air inlet pipe (2), a hinge seat (21) is arranged inside the air inlet pipe (2), and a filter assembly (3) is rotatably arranged on the hinge seat (21), and the filter assembly (3) is located inside the air inlet pipe (2); A centrifugal fan body (5) is arranged inside the noise reduction shell (1), an air outlet pipe (4) is arranged above the noise reduction shell (1), the air outlet pipe (4) is butted with the centrifugal fan body (5), and the air inlet pipe (2) is butted with the inlet end of the air outlet pipe (4); A sound insulation pad (6) is arranged inside the noise reduction shell (1), a shock absorption assembly (7) is arranged above the sound insulation pad (6), and the shock absorption assembly (7) is arranged below the centrifugal fan body (5).

2. The low-noise centrifugal fan with earthquake resistance effect according to claim 1, characterized in that: The filter assembly (3) includes a protective shell (31) rotatably arranged on the hinge seat (21), the center of the protective shell (31) is a hollow structure, and a filter screen (32) is slidably inserted inside the protective shell (31).

3. The low-noise centrifugal fan with earthquake resistance effect according to claim 2, characterized in that: A buckle (8) is slidably inserted above the air inlet pipe (2), the lower side of the buckle (8) is attached to one side of the protective shell (31), one side of the buckle (8) is fixedly connected with a wrench (81), and the wrench (81) extends away from the noise reduction shell (1).

4. The low-noise centrifugal fan with earthquake resistance effect according to claim 3, characterized in that: One side of the buckle (8) is fixedly connected with a limit slider (82), the limit slider (82) slides inside the air inlet pipe (2), and a spring (83) is arranged inside the air inlet pipe (2), and the spring (83) is located above the limit slider (82).

5. A low-noise centrifugal fan with earthquake resistance effect according to claim 1, characterized in that: The sound insulation pad (6) covers the inner wall surface of the noise reduction shell (1), and a sealing pad is arranged at the connection of the sound insulation pad (6) with the air inlet pipe (2) and the air outlet pipe (4).

6. A low-noise centrifugal fan with earthquake resistance effect according to claim 1, characterized in that: The shock absorption assembly (7) is a second bottom plate (72) located below the centrifugal fan body (5), the inner wall of the noise reduction shell (1) is fixedly connected with a first bottom plate (71), a rubber ring (73) is arranged between the first bottom plate (71) and the second bottom plate (72), a support plate (74) and a rubber pad (75) are arranged inside the rubber ring (73), a fixing bolt (76) is arranged inside the support plate (74), there are multiple fixing bolts (76), and one ends of the multiple fixing bolts (76) are respectively inserted into the first bottom plate (71) and the second bottom plate (72).

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