A centrifugal fan

Abstract

The utility model provides a centrifugal fan, it includes frame, swing device, buffer device and fan device, swing device locates on frame, buffer device locates on swing device, swing device is used for adjusting the swing angle of buffer device, fan device locates on buffer device, and buffer device is used for buffering the jitter when fan device works. The utility model solves the problem that traditional technology cannot adjust the blowing angle and the jitter seriously influences the operation stability and service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, and more specifically, to a centrifugal fan. Background Technology

[0002] Centrifugal fans, as a type of general-purpose machinery, are widely used in industrial production, building ventilation, environmental protection, and other fields. Their core function is to generate airflow through impeller rotation, thereby achieving gas transport and pressurization. With the diversification of application scenarios, higher requirements are being placed on the adaptability, stability, and service life of centrifugal fans.

[0003] Chinese Patent (Application No.: CN202010479398.7) discloses a high-efficiency centrifugal fan, including a motor and a volute having an air inlet assembly and an impeller assembly; a V-belt is installed on the motor pulley on the motor shaft to transmit power to the bearing; blades are installed in the impeller assembly through blade mounting parts, and the blade mounting parts are sleeved on the bearing with a bearing housing pulley; the blades are arranged in a ring array around the bearing.

[0004] However, this existing technology has obvious drawbacks: First, the fan casing and the base are fixedly connected, and the fan's blowing angle cannot be adjusted according to actual usage needs (such as ventilation coverage in different areas, air supply requirements at different heights, etc.), resulting in poor adaptability and difficulty in meeting the usage needs in complex scenarios; Second, it lacks a dedicated buffer mechanism, and the mechanical vibration generated when the drive motor and impeller rotate at high speed is directly transmitted to the base, which not only leads to high operating noise of the equipment, but also causes long-term vibration and wear of the base and internal components of the fan, which can easily lead to problems such as loosening of components and failure of seals, seriously affecting the operational stability and service life of the equipment. Utility Model Content

[0005] Based on this, in order to solve the problems of traditional technologies where the blowing angle cannot be adjusted and vibration seriously affects the operational stability and service life of the equipment, this utility model provides a centrifugal fan, the specific technical solution of which is as follows: A centrifugal fan, including frame; A swinging device, which is mounted on the frame; A buffer device is provided on the swing device, and the swing device is used to adjust the swing angle of the buffer device. A fan unit is mounted on a buffer device, which is used to buffer the vibration of the fan unit during operation.

[0006] The aforementioned centrifugal fan, by incorporating a swing device on its frame, directly drives the buffer device and fan assembly to adjust their swing angle. This allows the fan to flexibly switch its blowing direction according to different usage scenarios (such as ventilation in different areas of a workshop, air supply to different floors of a building, and air supply to different treatment stations in environmental protection equipment), without requiring disassembly or relocation of the entire unit. This significantly enhances the equipment's adaptability to diverse usage needs and broadens its application scope. The buffer device is specifically designed to fit the fan assembly, accurately absorbing the vibration energy generated during fan operation (during the motor-driven impeller rotation phase), effectively blocking the transmission path of vibration to the swing device and frame. This design not only reduces noise pollution during equipment operation but also prevents components from loosening, wearing, or failing to seal due to long-term vibration, significantly improving the stability of fan operation and extending the service life of the entire unit and its core components. The hierarchical assembly structure of "frame → swing device → buffer device → fan assembly" ensures clear connection logic and a compact layout for each component, guaranteeing both independent implementation of angle adjustment and vibration buffering functions while achieving coordinated operation of various functional modules. This centrifugal fan solves the problems of traditional technology, such as the inability to adjust the blowing angle and the serious impact of vibration on the operational stability and service life of the equipment.

[0007] Furthermore, the frame includes a frame and a first fixing block; the first fixing block is disposed on the frame.

[0008] Furthermore, the swing device includes a first cylinder, a mounting block, a linkage mechanism, and a mounting platform. The outer contour of the mounting block is L-shaped, and the mounting block is mounted on the frame.

[0009] Furthermore, the first cylinder is mounted on the mounting block and hinged to the mounting block, the output end of the first cylinder is connected to the linkage mechanism, and the mounting platform is mounted on the linkage mechanism.

[0010] Furthermore, the linkage mechanism includes a connecting rod, a first connecting arm, and a second connecting arm; the output end of the first cylinder is connected to the connecting rod, and the connecting rod is connected to the first connecting arm.

[0011] Furthermore, one end of the first connecting arm is hinged to the first fixing block, the other end of the first connecting arm is hinged to one end of the second connecting arm, the other end of the second connecting arm is connected to the mounting platform, and the fan device is mounted on the mounting platform.

[0012] Furthermore, the buffer device includes a second fixing block and a damper, the second fixing block being disposed on the frame, the damper being disposed on the second fixing block, and the damper being hinged to the mounting platform.

[0013] Furthermore, the buffer device includes a second fixing block and a damper, the second fixing block being disposed on the frame, the damper being disposed on the second fixing block, and the damper being hinged to the mounting platform.

[0014] Furthermore, the fan device includes a housing, an impeller, a transmission assembly, and a motor; the motor and the housing are both mounted on the mounting platform, and the housing is provided with an air inlet and an air outlet; the impeller is located inside the housing, the transmission assembly is driven to the impeller, the transmission assembly is driven to the motor, and the motor is used to drive the impeller to rotate. Attached Figure Description

[0015] The present invention can be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale; rather, the focus is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0016] Figure 1 This is a schematic diagram of the structure of a centrifugal fan according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a centrifugal fan according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the centrifugal fan device according to an embodiment of the present invention; Figure 4 yes Figure 1 Enlarged view of part A.

[0017] Explanation of reference numerals in the attached figures: 1-Frame; 11-Frame; 12-First fixing block; 2-Swing device; 21-First cylinder; 22-Mounting block; 23-Linkage mechanism; 231-Connecting rod; 232-First connecting arm; 233-Second connecting arm; 24-Mounting platform; 3-Buffer device; 31-Second fixing block; 32-Damping; 4-Fan device; 41-Outer shell; 42-Transmission assembly; 43-Motor; 5-Connecting block; 6-Slide rail. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0022] like Figures 1-3 As shown, a centrifugal fan in one embodiment of the present invention includes a frame 1, a swing device 2, a buffer device 3, and a fan device 4; the swing device 2 is disposed on the frame 1; the buffer device 3 is disposed on the swing device 2, and the swing device 2 is used to adjust the swing angle of the buffer device 3; the fan device 4 is disposed on the buffer device 3, and the buffer device 3 is used to buffer the vibration of the fan device 4 during operation.

[0023] The centrifugal fan described above, by setting a swing device 2 on the frame 1, can directly drive the buffer device 3 and the fan device 4 to adjust the swing angle, so that the fan can flexibly switch the blowing direction according to different usage scenarios (such as ventilation in different areas of the workshop, air supply to different floors of the building, air supply to different treatment stations of environmental protection equipment, etc.), without disassembling or moving the whole machine, which greatly improves the adaptability of the equipment to diverse usage needs and broadens the application range; the buffer device 3 is specially adapted to the fan device 4, which can accurately absorb the vibration energy generated when the fan is working (during the stage when the motor 43 drives the impeller to rotate), effectively blocking the transmission path of vibration to the swing device 2 and the frame 1. This design not only reduces noise pollution during equipment operation but also prevents components from loosening, wearing, or failing to seal due to long-term vibration, significantly improving the stability of the fan operation and extending the service life of the entire machine and its core components. The hierarchical assembly structure of "frame 1 → swing device 2 → buffer device 3 → fan device 4" ensures clear connection logic and a compact layout for each component, guaranteeing both independent implementation of angle adjustment and vibration buffering functions while achieving coordinated operation of each functional module. This centrifugal fan solves the problems of traditional technology, such as the inability to adjust the blowing angle and the severe impact of vibration on equipment stability and service life.

[0024] like Figures 1-2 As shown, in one embodiment, the frame 1 includes a frame 11 and a first fixing block 12; the first fixing block 12 is disposed on the frame 11; the swing device 2 includes a first cylinder 21, a mounting block 22, a linkage mechanism 23, and a mounting platform 24. The outer contour of the mounting block 22 is L-shaped, and the mounting block 22 is disposed on the frame 11; the first cylinder 21 is disposed on the mounting block 22 and hinged to the mounting block 22, and the output end of the first cylinder 21 is connected to the linkage mechanism 23. The mounting platform 24 is disposed on the linkage mechanism 23; the linkage mechanism 23 includes a connecting rod 231, a first connecting arm 232, and a second connecting arm 23. 3; The output end of the first cylinder 21 is connected to the connecting rod 231, and the connecting rod 231 is connected to the first connecting arm 232; One end of the first connecting arm 232 is hinged to the first fixing block 12, and the other end of the first connecting arm 232 is hinged to one end of the second connecting arm 233, and the other end of the second connecting arm 233 is connected to the mounting platform 24; The fan device 4 is mounted on the mounting platform 24; The buffer device 3 includes a second fixing block 31 and a damper 32, the second fixing block 31 is mounted on the frame 11, the damper 32 is mounted on the second fixing block 31, and the damper 32 is hinged to the mounting platform 24.

[0025] like Figure 4As shown, in one embodiment, the first fixing block 12 is provided with a connecting block 5, the connecting block 5 is provided with a sliding block, the mounting platform 24 is provided with a slide rail 6, and the sliding block is inserted into the slide rail 6 and slidably connected with the slide rail 6.

[0026] like Figure 3 As shown, in one embodiment, the fan device 4 includes a housing 41, an impeller, a transmission assembly 42, and a motor 43; the motor 43 and the housing 41 are both mounted on the mounting platform 24, and the housing 41 is provided with an air inlet and an air outlet; the impeller is disposed inside the housing 41, the transmission assembly 42 is driven to the impeller, and the transmission assembly 42 is driven to the motor 43, and the motor 43 is used to drive the impeller to rotate.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A centrifugal fan characterized by comprising: include: frame; A swinging device, which is mounted on the frame; A buffer device is provided on the swing device, and the swing device is used to adjust the swing angle of the buffer device. A fan unit is mounted on the buffer device, and the buffer device is used to buffer the vibration of the fan unit during operation. The frame includes a frame and a first fixing block; the first fixing block is disposed on the frame; The swinging device includes a first cylinder, a mounting block, a linkage mechanism, and a mounting platform. The outer contour of the mounting block is L-shaped, and the mounting block is mounted on the frame. The first cylinder is mounted on the mounting block and hinged to the mounting block. The output end of the first cylinder is connected to the linkage mechanism. The mounting platform is mounted on the linkage mechanism. The linkage mechanism includes a connecting rod, a first connecting arm, and a second connecting arm; the output end of the first cylinder is connected to the connecting rod, and the connecting rod is connected to the first connecting arm.

2. The centrifugal fan of claim 1, wherein One end of the first connecting arm is hinged to the first fixing block, the other end of the first connecting arm is hinged to one end of the second connecting arm, the other end of the second connecting arm is connected to the mounting platform, and the fan device is mounted on the mounting platform.

3. The centrifugal fan of claim 2, wherein The buffer device includes a second fixed block and a damper. The second fixed block is disposed on the frame, and the damper is disposed on the second fixed block. The damper is hinged to the mounting platform.

4. The centrifugal fan of claim 1, wherein The first fixing block is provided with a connecting block, the connecting block is provided with a sliding block, the mounting platform is provided with a slide rail, and the sliding block is inserted into the slide rail and slidably connected to the slide rail.

5. The centrifugal fan of claim 1, wherein The fan unit includes a housing, an impeller, a transmission assembly, and a motor; the motor and the housing are both mounted on the mounting platform, and the housing has an air inlet and an air outlet; the impeller is located inside the housing, the transmission assembly is driven to the impeller, and the transmission assembly is driven to the motor, and the motor is used to drive the impeller to rotate.

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