Low noise cabinet centrifugal fan

Abstract

The utility model discloses a low noise cabinet type centrifugal fan relates to centrifugal fan field, including cabinet body and fan body, wherein fan body is located inside the cabinet body, the bottom of fan body is provided with the energy absorption box in the cabinet body, and the inner wall of cabinet is provided with also sound absorption cotton, wherein the inside elastic sliding of energy absorption box is provided with the placing plate, one side of energy absorption box in the cabinet is provided with the shower nozzle that cooperates with placing plate. The utility model placing plate is buffered to it under the action of elastic component, and the vibration energy generated in its working process is absorbed, at the same time, the sound absorption cotton of cabinet inner wall is cooperated, so that the noise in the cabinet is effectively reduced, the gas is discharged through the shower nozzle, thereby can effectively reduce the dust impurity of outside to invade the inside of fan body, and the service life of fan body itself is improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fans, specifically a low-noise cabinet-type centrifugal fan. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are a type of driven fluid machinery. Cabinet-type centrifugal fans use corrosion-resistant materials and explosion-proof measures, and are matched with explosion-proof motors. They can be used in places with explosive, volatile, or corrosive gases. The most significant feature of cabinet-type centrifugal fans is that the fan is housed in a cabinet, and the fan is installed inside the cabinet for use.

[0003] Existing cabinet-type centrifugal fans generate a lot of noise during operation. Generally, sound-absorbing cotton is installed inside the cabinet. However, the sound-absorbing cotton alone is not effective in dealing with the vibration and other noise generated by the fan. At the same time, impurities and dust in the outside air can enter the centrifugal fan, which will affect the overall service life of the centrifugal fan over a long period of time.

[0004] In summary, the above structure will generate a lot of noise during actual use, and impurities and dust in the air will enter the centrifugal fan, affecting the overall service life of the centrifugal fan over a long period of time. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a low-noise cabinet centrifugal fan to solve the technical problem that a lot of noise is generated during actual use, and that impurities and dust in the air will enter the interior of the centrifugal fan, affecting the overall service life of the centrifugal fan for a long time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-noise cabinet-type centrifugal fan, comprising a cabinet and a fan body, wherein the fan body is located inside the cabinet, an energy-absorbing box is provided at the bottom of the fan body inside the cabinet, and sound-absorbing cotton is also provided on the inner wall of the cabinet, wherein a placement plate is elastically slidably arranged inside the energy-absorbing box, and a nozzle that cooperates with the placement plate is provided on one side of the energy-absorbing box inside the cabinet.

[0007] By adopting the above technical solution, the placement plate itself is buffered by the action of elastic components, absorbing the vibration energy generated during its operation. At the same time, in conjunction with the sound-absorbing cotton on the inner wall of the cabinet, the noise inside the cabinet is effectively reduced. The compressed gas is discharged through the nozzle, thereby effectively reducing the intrusion of external dust and impurities into the inside of the fan body and improving the service life of the fan body itself.

[0008] The present invention is further configured such that a support rod is hinged to the bottom of the placement plate, and a slider is hinged to one end of the support rod, wherein the slider is elastically positioned inside the energy absorption box.

[0009] Preferably, during the operation of the fan body, the placement plate slides vertically under the action of the support rod and the slider, while the elastic component on one side absorbs its shock energy to achieve a certain buffering effect.

[0010] The present invention is further configured such that a sliding rod is provided inside the energy-absorbing box, and a slider is sleeved on the outer wall of the sliding rod, wherein an elastic airbag is provided on the inner wall of the slider on the sliding rod, and the elastic airbag is connected to the nozzle.

[0011] Preferably, during the sliding process of the support rod driving the slider, the slider will compress the elastic airbag inside, causing the elastic airbag to reciprocate by deforming and resetting. During this process, the gas in the elastic airbag will be blown towards the front end of the blower body through the nozzle.

[0012] The present invention is further provided that the outer wall of the slide rod is also fitted with a compression spring, wherein one end of the compression spring is connected to a slider.

[0013] Preferably, during the sliding process of the slider, the compression spring on one side is stretched, so that the compression spring itself is in an elongated state. Then, during the reset, the spring effectively absorbs the vibration through its own reset force.

[0014] The present invention is further configured such that the elastic airbag is provided with an air inlet one-way valve and an air outlet one-way valve, wherein the air outlet one-way valve is located at the connection between the elastic airbag and the nozzle, and the air inlet one-way valve is located on the elastic airbag.

[0015] Preferably, when the elastic airbag itself is compressed, its exhaust one-way valve is in the open state and its intake one-way valve is in the closed state. During this process, the gas in the elastic airbag will be discharged outward through the nozzle. When the elastic airbag is reset with the slider, its exhaust one-way valve is in the closed state and its intake one-way valve is in the open state to absorb outside air, which facilitates the exhaust work of the next set of elastic airbags.

[0016] The present invention is further provided in that the inner wall of the energy-absorbing box is provided with a sliding groove, and the two ends of the placement plate are provided with sliders that cooperate with the sliding groove.

[0017] Preferably, the sliding plate slides vertically within the energy-absorbing box through the cooperation of the sliding groove and the slider, further improving the overall stability.

[0018] The present invention is further configured such that an air inlet is provided at one end of the fan body and an air outlet is provided at the other end, wherein the air inlet and the air outlet respectively penetrate the cabinet.

[0019] Preferably, the air inlet and outlet facilitate the operation of the fan itself.

[0020] The present invention is further provided that the cabinet has a through hole for the air inlet and the air outlet to vibrate, and the inner wall of the through hole is provided with a sealing sleeve.

[0021] Preferably, the through holes provide space for the air inlet and outlet to vibrate during the fan body's shaking process, improving the overall practicality of the device. Furthermore, the sealing sleeve reduces dust contamination inside the cabinet.

[0022] The present invention is further configured such that the sound-absorbing cotton located on the inner wall of the cabinet is detachable.

[0023] Preferably, the detachable design makes it easier for staff to replace the sound-absorbing cotton inside the cabinet, thus improving the overall noise reduction effect.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model has an energy-absorbing box installed inside the cabinet. During the operation of the fan body, the placement plate itself is buffered by the elastic component, which absorbs the vibration energy generated during the operation. At the same time, in conjunction with the sound-absorbing cotton on the inner wall of the cabinet, the noise inside the cabinet is effectively reduced.

[0026] 2. This utility model has an elastic airbag inside the energy absorption box. During operation, the vibration of the fan body will drive the slider to squeeze the elastic airbag itself, so that the squeezed gas is discharged through the nozzle. This can effectively reduce the intrusion of external dust and impurities into the fan body and improve the service life of the fan body. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present utility model;

[0028] Figure 2 This is an internal view of the present invention;

[0029] Figure 3 This is a cross-sectional view of the energy-absorbing box of this utility model;

[0030] Figure 4 This is the front view of the present invention;

[0031] Figure 5 This utility model Figure 2 A magnified view of A in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Cabinet; 2. Fan body; 3. Air outlet; 4. Air inlet; 5. Sound-absorbing cotton; 6. Nozzle; 7. Energy-absorbing box; 8. Support rod; 9. Placement plate; 10. Compression spring; 11. Elastic airbag; 12. Sliding block; 13. Sliding rod. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of this utility model will be described below based on its overall structure.

[0036] First embodiment:

[0037] Please see Figures 1-5 The low-noise cabinet-type centrifugal fan shown includes a cabinet 1, a fan body 2, a dust removal mechanism, a buffer mechanism, and a noise reduction component. An energy-absorbing box 7 is installed at the bottom of the fan body 2 inside the cabinet 1. A placement plate 9 is elastically slidably installed inside the energy-absorbing box 7. By connecting the bottom end of the fan body 2 to the top of the placement plate 9, and then starting the fan body 2, a support rod 8 is hinged to the bottom of the placement plate 9, and a slider 12 is hinged to one end of the support rod 8. The slider 12 is elastically installed inside the energy-absorbing box 7. During the operation of the fan body 2, the placement plate 9 itself will slide vertically under the action of the support rod 8 and the slider 12. At the same time, the compression spring 10 on one side absorbs its vibration energy, so as to achieve a certain buffering effect.

[0038] Furthermore, sound-absorbing cotton 5 is installed on the inner wall of cabinet 1, which, together with the sound-absorbing cotton 5 on the inner wall of cabinet 1, effectively reduces the noise inside cabinet 1. At the same time, a sliding rod 13 is installed inside the energy-absorbing box 7, and a slider 12 is sleeved on the outer wall of the sliding rod 13. An elastic airbag 11 is installed on the inner wall of the slider 12 on the sliding rod 13, and the elastic airbag 11 is connected to the nozzle 6. During the process of the support rod 8 driving the slider 12 to slide, the slider 12 will squeeze the elastic airbag 11 on its inner side, causing the elastic airbag 11 to reciprocate by deforming and restoring itself. During this process, the gas in the elastic airbag 11 will be blown to the front end of the fan body 2 through the nozzle 6, thereby effectively reducing the intrusion of external dust and impurities into the interior of the fan body 2 and improving the service life of the fan body 2.

[0039] For details regarding the above embodiments, please refer to [link / reference]. Figure 2An air inlet 4 is provided at one end of the fan body 2, and an air outlet 3 is provided at the other end. The air inlet 4 and the air outlet 3 respectively penetrate the cabinet 1. The air inlet 4 and the air outlet 3 facilitate the operation of the fan body 2. The cabinet 1 has a through hole for the air inlet 4 and the air outlet 3 to vibrate. The inner wall of the through hole is provided with a sealing sleeve. The through hole provides vibration space for the air inlet 4 and the air outlet 3 during the vibration of the fan body 2, which improves the overall practicality of the device. In addition, the sealing sleeve reduces the dust contamination inside the cabinet 1.

[0040] Second embodiment:

[0041] Please see Figure 4 The low-noise cabinet-type centrifugal fan shown has an overall structure similar to that of Embodiment 1. The elastic airbag 11 is equipped with an inlet one-way valve and an exhaust one-way valve. The exhaust one-way valve is located at the connection between the elastic airbag and the nozzle 6, while the inlet one-way valve is located on the elastic airbag 11. When the elastic airbag 11 is compressed, its exhaust one-way valve is in the open state, and its inlet one-way valve is in the closed state. During this process, the gas inside the elastic airbag will be discharged outward through the nozzle 6. When the elastic airbag is reset with the slider, its exhaust one-way valve is in the closed state, and its inlet one-way valve is in the open state, absorbing outside air to facilitate the exhaust work of the next set of elastic airbags.

[0042] In practical operation, this invention works as follows: When the fan body 2 is activated, the vibration of the fan body 2 causes the placement plate 9 to move downwards. During this process, the slider 12 stretches the elastic component on the slide rod 13, and then resets to complete the buffering work of the fan body 2, absorbing the vibration energy generated during its operation. At the same time, in conjunction with the sound-absorbing cotton 5 on the inner wall of the cabinet 1, the noise inside the cabinet 1 is effectively reduced. Furthermore, during the reciprocating sliding of the slider 12, the inner elastic airbag 11 is also compressed, causing the gas inside the elastic airbag 11 to be discharged outwards under the action of the nozzle 6, thereby effectively reducing the intrusion of external dust and impurities into the interior of the fan body 2.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A low-noise cabinet-type centrifugal fan, comprising a cabinet (1) and a fan body (2), wherein the fan body (2) is located inside the cabinet (1), characterized in that: An energy-absorbing box (7) is provided at the bottom of the fan body (2) inside the cabinet (1), and sound-absorbing cotton (5) is also provided on the inner wall of the cabinet (1). A placement plate (9) is elastically slidably provided inside the energy-absorbing box (7), and a nozzle (6) that cooperates with the placement plate (9) is provided on one side of the energy-absorbing box (7) inside the cabinet (1).

2. The low-noise cabinet-type centrifugal fan according to claim 1, characterized in that: The bottom of the placement plate (9) is hinged to a support rod (8), and a slider (12) is hinged to one end of the support rod (8). The slider (12) is located in the energy absorption box (7) and is elastically set.

3. A low-noise cabinet-type centrifugal fan according to claim 2, characterized in that: The energy-absorbing box (7) is provided with a slide rod (13), and a slider (12) is sleeved on the outer wall of the slide rod (13). An elastic airbag (11) is provided on the inner wall of the slider (12) on the slide rod (13), and the elastic airbag (11) is connected to the nozzle (6).

4. A low-noise cabinet-type centrifugal fan according to claim 3, characterized in that: The outer wall of the slide bar (13) is also fitted with a compression spring (10), one end of which is connected to a slider (12).

5. A low-noise cabinet-type centrifugal fan according to claim 3, characterized in that: The elastic airbag (11) is provided with an air intake one-way valve and an air exhaust one-way valve, wherein the air exhaust one-way valve is located at the connection between the elastic airbag (11) and the nozzle (6), and the air intake one-way valve is located on the elastic airbag (11).

6. A low-noise cabinet-type centrifugal fan according to claim 1, characterized in that: The inner wall of the energy-absorbing box (7) is provided with a sliding groove, and the two ends of the placement plate (9) are provided with sliders that cooperate with the sliding groove.

7. A low-noise cabinet-type centrifugal fan according to claim 1, characterized in that: The fan body (2) has an air inlet (4) at one end and an air outlet (3) at the other end, wherein the air inlet (4) and the air outlet (3) pass through the cabinet (1) respectively.

8. A low-noise cabinet-type centrifugal fan according to claim 7, characterized in that: The cabinet (1) has a through hole for the air inlet (4) and air outlet (3) to vibrate, and the inner wall of the through hole is provided with a sealing sleeve.

9. A low-noise cabinet-type centrifugal fan according to claim 1, characterized in that: The sound-absorbing cotton (5) is located on the inner wall of the cabinet (1) and is detachable.

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