Noise reducing cabinet centrifugal fan

Abstract

The utility model discloses a noise reduction cabinet type centrifugal fan, including fan main part, the fan main part includes sound insulation casing, air outlet, air inlet, centrifugal subassembly and be used for centrifugal subassembly drive drive assembly, the air inlet includes filter frame and connecting frame and is arranged between filter frame and connecting frame telescopic subassembly, the filter frame inner surface wall fixedly connected with filter screen. In this application, after the fan main part is fixedly installed to the corresponding area, the air outlet is connected with the connecting frame and the external air passage, after the external airflow enters the air inlet, the filter screen can separate the solid impurities in the air, and the filter screen is obliquely arranged to avoid the solid impurities from being adsorbed on the filter screen due to negative pressure. The solid impurities will fall into the collection drawer, and the subsequent separation locking rod and the collection drawer can realize the centralized treatment of the solid impurities, so as to endow the cabinet type centrifugal fan with the air filtering function, and ensure the convenience of the centralized treatment of the solid impurities.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and in particular to a noise-reducing cabinet-type centrifugal fan. Background Technology

[0002] Low-noise cabinet centrifugal fans are ventilation devices that integrate centrifugal fans and soundproof cabinets. Their main feature is that they can significantly reduce noise levels during operation, making them suitable for places with strict requirements on environmental noise.

[0003] Chinese Patent Publication No. CN213744048U, published on July 20, 2021, discloses a noise-reducing cabinet-type centrifugal fan, including a cabinet-type centrifugal fan housing. A cabinet door is hinged to the left side of the cabinet-type centrifugal fan housing, and bolts are detachably connected to the outside of the cabinet door. A pulley is fixedly connected to the right side of the cabinet-type centrifugal fan housing, and a belt cover is detachably connected to the outside of the pulley. An energy-saving motor is fixedly connected to the upper side of the cabinet-type centrifugal fan housing, and the output end of the energy-saving motor is fixedly connected to the outside of the pulley. A sound-absorbing and dustproof cover is detachably connected to the outside of the energy-saving motor. An air inlet is opened inside the cabinet-type centrifugal fan housing, and a first filter screen is detachably connected to the outside of the air inlet.

[0004] Existing low-noise cabinet-type centrifugal fans optimize sound insulation by using a soundproof casing. The air inlet and outlet are connected to corresponding air ducts. In practice, the structure and function of the air inlet and outlet are relatively simple. The air filtration of the air inlet can be further optimized. Therefore, there is an urgent need to propose a corresponding low-noise cabinet-type centrifugal fan to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to propose a noise-reducing cabinet-type centrifugal fan to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A noise-reducing cabinet-type centrifugal fan includes a fan body, which includes a sound-insulating shell, an air outlet, an air inlet, a centrifugal assembly, and a drive assembly for driving the centrifugal assembly. The air inlet includes a filter frame and a connecting frame, as well as a telescopic assembly disposed between the filter frame and the connecting frame. A filter screen is fixedly connected to the inner wall of the filter frame, and a collection drawer is fixedly connected to the bottom of the filter frame.

[0008] Preferably, the telescopic component includes a shrinkable frame fixedly connected to the connecting frame, the shrinkable frame being sleeved on the outside of the filter frame, and the outer wall of the filter frame having a protruding edge fixedly connected to it for horizontally limiting the shrinkable frame.

[0009] Preferably, a mounting plate is fixedly connected to the side of the filter screen away from the connecting frame, and the mounting plate is fixedly connected to the inner wall of the filter frame by screws.

[0010] Preferably, the filter screen is arranged at an angle.

[0011] Preferably, a side piece is fixedly connected to the outer wall of the collection drawer, and the side piece is fixedly connected to the bottom of the filter frame by a locking rod.

[0012] Preferably, a sealing gasket is connected to both the connecting frame and the back of the air outlet, and a sealing gasket is connected to the outer wall of the convex edge.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this application, after the main body of the fan is fixedly installed in the corresponding area, the air outlet and the connecting frame are connected to the external air duct. After the external airflow enters the air inlet, the filter screen can separate solid impurities in the air. The inclined filter screen can prevent solid impurities from being adsorbed on the filter screen due to negative pressure. The solid impurities will fall into the collection tray. Afterwards, the locking rod can be separated and the collection tray can be removed to achieve centralized treatment of solid impurities. This gives the cabinet centrifugal fan the air filtration function while ensuring the convenience of centralized treatment of solid impurities.

[0015] 2. In this application, after the main body of the fan is fixed, the connecting frame is pulled to connect with the connection end of the external air duct. After the telescopic frame moves a corresponding distance, the inner surface of the telescopic frame abuts against the outer surface of the protruding edge, thereby providing the telescopic function for the air inlet. Subsequently, based on the fixed position of the main body of the fan and the external air duct, the air inlet can be quickly and independently disassembled, thereby further improving the convenience of using the low-noise cabinet centrifugal fan. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0017] Figure 2 A schematic diagram of a collection drawer structure according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of a filter structure according to an embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram of the protruding edge structure provided according to an embodiment of the present invention is shown.

[0020] Legend:

[0021] 1. Fan body; 101. Soundproof housing; 102. Air outlet; 103. Air inlet; 104. Drive assembly; 2. Collection drawer; 3. Side plate; 4. Locking rod; 5. Connecting frame; 6. Retractable frame; 7. Filter frame; 8. Filter screen; 9. Mounting plate; 10. Sealing gasket one; 11. Raised edge; 12. Sealing gasket two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A noise-reducing cabinet-type centrifugal fan includes a fan body 1. The fan body 1 includes a sound insulation shell 101, an air outlet 102, an air inlet 103, a centrifugal assembly, and a drive assembly 104 for driving the centrifugal assembly. The air inlet 103 includes a filter frame 7 and a connecting frame 5, as well as a telescopic assembly disposed between the filter frame 7 and the connecting frame 5. A filter screen 8 is fixedly connected to the inner wall of the filter frame 7, and a collection tray 2 is fixedly connected to the bottom of the filter frame 7.

[0025] After the main body 1 of the fan is fixedly installed in the corresponding area, the air outlet 102 and the connecting frame 5 are connected to the external air duct. After the external airflow enters the air inlet 103, the filter screen 8 can separate solid impurities in the air. The inclined filter screen 8 can prevent solid impurities from being adsorbed on the filter screen 8 due to negative pressure. The solid impurities will fall into the collection tray 2. Afterwards, the locking rod 4 can be separated and the collection tray 2 can be removed to achieve centralized treatment of solid impurities. This gives the cabinet centrifugal fan the air filtration function while ensuring the convenience of centralized treatment of solid impurities.

[0026] Specifically, such as Figure 2 and Figure 4 As shown, the telescopic assembly includes a retractable frame 6 fixedly connected to the connecting frame 5. The retractable frame 6 is sleeved on the outside of the filter frame 7, and a protruding edge 11 for horizontal limiting of the retractable frame 6 is fixedly connected to the outer wall of the filter frame 7. After the fan body 1 is fixed, the connecting frame 5 is pulled to connect with the connection end of the external air duct. After the retractable frame 6 moves a corresponding distance, the inner wall of the retractable frame 6 abuts against the outer wall of the protruding edge 11, thereby providing telescopic function for the air inlet 103. Subsequently, based on the fixed position of the fan body 1 and the external air duct, the air inlet 103 can be independently and quickly disassembled and assembled, thereby further improving the ease of use of the low-noise cabinet centrifugal fan.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, a mounting plate 9 is fixedly connected to the side of the filter screen 8 away from the connecting frame 5. The mounting plate 9 is fixedly connected to the inner wall of the filter frame 7 by screws, ensuring the ease of disassembly and assembly of the filter screen 8. The filter screen 8 is set at an angle, which can prevent solid impurities from being adsorbed on the filter screen 8 due to negative pressure. A side plate 3 is fixedly connected to the outer wall of the collection tray 2. The side plate 3 is fixedly connected to the bottom of the filter frame 7 by locking rod 4, ensuring the ease of disassembly and assembly of the collection tray 2. Sealing gaskets 10 are connected to the back of the connecting frame 5 and the air outlet 102 to ensure the airtightness of the connection between the connecting frame 5 and the air outlet 102 and the external air duct. Sealing gasket 2 12 is connected to the outer wall of the protruding edge 11 to ensure the airtightness of the connection between the shrink frame 6 and the protruding edge 11.

[0028] Working principle: After the main body 1 of the fan is fixedly installed in the corresponding area, the air outlet 102 and the connecting frame 5 are connected to the external air duct. After the external airflow enters the air inlet 103, the filter screen 8 can separate solid impurities in the air. The inclined filter screen 8 can prevent solid impurities from being adsorbed on the filter screen 8 due to negative pressure. The solid impurities will fall into the collection tray 2. Afterwards, the locking rod 4 is separated and the collection tray 2 is removed to achieve centralized treatment of solid impurities. This gives the cabinet centrifugal fan the air filtration function while ensuring the convenience of centralized treatment of solid impurities. After the main body 1 of the fan is fixed, the connecting frame 5 is pulled to connect with the connection end of the external air duct. After the retractable frame 6 moves a corresponding distance, the inner surface of the retractable frame 6 abuts against the outer surface of the protruding edge 11, thereby providing the retraction function of the air inlet 103. Afterwards, based on the fixed position of the main body 1 of the fan and the external air duct, the air inlet 103 can be quickly and independently disassembled and assembled, thereby further improving the convenience of using the low-noise cabinet centrifugal fan.

[0029] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A noise-reducing cabinet-type centrifugal fan, comprising a fan body (1), wherein the fan body (1) includes a sound-insulating shell (101), an air outlet (102), an air inlet (103), a centrifugal assembly, and a drive assembly (104) for driving the centrifugal assembly, characterized in that, The air inlet (103) includes a filter frame (7) and a connecting frame (5) and a telescopic component disposed between the filter frame (7) and the connecting frame (5). A filter screen (8) is fixedly connected to the inner surface of the filter frame (7), and a collection tray (2) is fixedly connected to the bottom of the filter frame (7).

2. The noise-reducing cabinet-type centrifugal fan according to claim 1, characterized in that, The telescopic assembly includes a shrinkable frame (6) fixedly connected to the connecting frame (5), the shrinkable frame (6) being sleeved on the outside of the filter frame (7), and the outer wall of the filter frame (7) being fixedly connected with a protruding edge (11) for horizontal limiting of the shrinkable frame (6).

3. The noise-reducing cabinet-type centrifugal fan according to claim 2, characterized in that, The filter screen (8) is fixedly connected to a mounting plate (9) on the side away from the connecting frame (5), and the mounting plate (9) is fixedly connected to the inner wall of the filter frame (7) by screws.

4. The noise-reducing cabinet-type centrifugal fan according to claim 3, characterized in that, The filter (8) is set at an angle.

5. The noise-reducing cabinet-type centrifugal fan according to claim 4, characterized in that, The outer wall of the book collection drawer (2) is fixedly connected with a side piece (3), which is fixedly connected to the bottom of the filter frame (7) by a locking rod (4).

6. The noise-reducing cabinet-type centrifugal fan according to claim 5, characterized in that, The connecting frame (5) and the air outlet (102) are both connected to a sealing gasket (10) on opposite sides, and the outer wall of the protruding edge (11) is connected to a sealing gasket (12).

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