A fan power unit with a split-type air duct design

Abstract

This utility model discloses a split-type duct design for a fan power unit, comprising an inlet filter, a dynamically adjustable guide vane, a power core, and a rectification unit arranged sequentially along the airflow direction. Each unit can be quickly assembled and disassembled via magnetic latches. The guide vanes are distributed circumferentially along the duct, with their rotation shaft hinged to a rocker arm through the side wall. A transmission rod is inserted into the hollow part of the rocker arm, and a ring gear is connected to the end of the rod. The output shaft of the adjusting motor is connected to a drive gear, which meshes with the ring gear to form a linkage adjustment mechanism. During operation, the airflow enters the guide vane unit after filtration. The motor drives the gear, ring gear, and transmission rod, and the blade angle is adjusted via the rocker arm to adapt to the airflow. The airflow is pressurized by the power core and optimized by the rectification unit before being output. The magnetic latches enable quick assembly and disassembly. This design's gear-ring linkage allows for precise blade adjustment and reduces energy consumption; the magnetic latches improve maintenance efficiency and ensure good sealing; the split adjustable structure adapts to multiple scenarios, solving the pain points of traditional fans.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment, specifically a fan power device with a split-type air duct design. Background Technology

[0002] In the field of ventilation equipment technology, fan power units, as core equipment for airflow conveying and control, are widely used in industrial workshops, large venues, air purification systems, and other scenarios. Their performance directly affects ventilation efficiency, energy consumption, and maintenance costs. With the increasing demand for precise airflow control in industrial production and public facilities, traditional integrated fan power units are gradually becoming unable to meet the requirements of flexible adaptation and efficient operation and maintenance, and urgently need to be innovated and optimized in structural design and functional adjustment.

[0003] Traditional wind turbine power units currently on the market still have significant drawbacks: First, most of them adopt an integrated shell design, and the functional modules such as air intake filtration, air guide, and power core cannot be separated. If different air volume and air pressure scenarios are required, the entire equipment needs to be replaced or a large-scale modification needs to be carried out. Second, the adjustment accuracy of the guide vanes is low. The guide vanes are mostly fixed angles or use simple linkage adjustment mechanisms, which have problems such as large adjustment errors and poor blade synchronization, which can easily lead to airflow turbulence and increased resistance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fan power device with a split-type duct design. During operation, the airflow first passes through a filter screen and enters a dynamically adjustable guide unit. An adjusting motor drives a drive gear that meshes with a ring gear, which in turn rotates the guide vanes via a transmission rod and rocker arm to adjust the angle and adapt to the airflow volume. The guided airflow then enters the core power unit, where an external motor drives the transmission shaft and impeller to rotate and increase pressure via helical gear transmission. Finally, the airflow enters an inverted conical rectifier unit, where it is output after the internal rectifier vanes optimize the flow field. To achieve the above objectives, this utility model provides the following technical solution: A fan power device with a split-type duct design, including a filter screen, wherein the filter screen is connected to a dynamically adjustable guide unit along the airflow direction.

[0005] The dynamically adjustable airflow guiding unit includes a rotating shaft distributed around the circumference of the air duct. Its top end is connected to a blade bearing seat located at the center of the air duct via a bearing. Airflow guiding blades are fixedly installed on the rotating shaft. The other end of the rotating shaft extends outward through the side wall of the air duct and is hinged to a rocker arm on the extended portion. The center of the rocker arm has a through groove at the other end near the hinge. A transmission rod is slidably connected inside the groove. An annular gear ring is fixedly connected to the end of the transmission rod away from the rocker arm. The gear ring is slidably connected to a groove in the outer wall of the dynamically adjustable airflow guiding unit. A drive gear is meshed on the outer side of the annular gear ring. The drive gear is connected to the output shaft of the adjusting motor.

[0006] The dynamically adjustable flow guiding unit is connected to a power core unit along the airflow direction. The power core unit includes a motor located outside the device. The output shaft of the motor is perpendicular to the fan axis and extends into the power core unit. A driving helical gear is provided at the top of the output shaft. The driving helical gear meshes with a driven helical gear. The driven helical gear is keyed to a transmission shaft. The transmission shaft is connected to two sets of bearing seats through bearings. An impeller is provided at the other end of the transmission shaft.

[0007] Furthermore, the filter screen has a honeycomb structure, with its honeycomb pores evenly distributed in regular hexagonal shapes.

[0008] Furthermore, the two sets of bearing housings are respectively located near the driven helical gear and impeller on the transmission shaft, and are fixedly connected to the inner wall of the power core unit. The transmission shaft and the bearings in the bearing housings are interference-fitted.

[0009] Furthermore, the power core unit is connected to a rectifier unit along the airflow direction. The rectifier unit has an inverted conical structure and multiple sets of rectifier blades arranged in a ring array inside. The rectifier blades have a streamlined structure and their two ends are fixedly connected to the inner sidewall of the rectifier unit.

[0010] Furthermore, the filter screen and the dynamically adjustable flow guiding unit, as well as the power core unit and the rectifier unit, are all connected by magnetic attraction. The magnetic attraction connection is that the mating parts of the two components are evenly distributed with several magnetic protrusions, and the magnetic protrusions of adjacent components attract each other.

[0011] Furthermore, the dynamically adjustable airflow guiding unit and the power core unit are connected by a latch, which includes a buckle fixed to the edge of the air outlet of the dynamically adjustable airflow guiding unit and a slot opened at the edge of the air inlet of the power core unit, and the buckle and the slot engage with each other.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] 1. Utilizing a modular structure combined with magnetic lumens and locking mechanisms, this design enables rapid disassembly and flexible combination of functional units. Compared to traditional integrated fans that require overall modification or replacement, this solution allows for individual filter replacement, flow guide unit adjustment, or power core adjustment based on different scenario requirements. This significantly reduces scenario adaptation costs and improves equipment versatility and maintenance efficiency.

[0014] 2. The design employs a gear-ring linkage mechanism to precisely adjust the angle of the guide vanes, combined with an external motor driving the impeller via helical gear transmission. This ensures accurate airflow control, reduces energy loss due to airflow turbulence, and optimizes the equipment layout by externalizing the power core. Simultaneously, the inverted conical rectifier unit and internal streamlined blades further optimize the outlet airflow field, improving the overall operating efficiency and stability of the fan. Attached Figure Description

[0015] Figure 1 A schematic diagram of a fan power unit designed for a split-type air duct according to this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the dynamically adjustable flow guiding unit of this utility model;

[0017] Figure 3 This is a cross-sectional view of the dynamically adjustable flow guiding unit structure of this utility model;

[0018] Figure 4 This is a cross-sectional view of the overall structure of this utility model.

[0019] In the diagram: 1. Filter screen; 2. Dynamically adjustable flow guiding unit; 201. Rotating shaft; 202. Blade bearing seat; 203. Flow guiding blade; 204. Rocker arm; 205. Slide groove; 206. Transmission rod; 207. Ring gear; 208. Drive gear; 209. Adjusting motor; 3. Power core unit; 301. Motor; 302. Drive helical gear; 303. Driven helical gear; 304. Transmission shaft; 305. Bearing seat; 306. Impeller; 4. Rectifying unit; 5. Rectifying blade; 6. Magnetic tack; 7. Buckle; 8. Slot. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 The fan power unit of the split-type air duct design in this embodiment includes a filter screen 1, and the filter screen 1 is connected to a dynamically adjustable flow guiding unit 2 along the airflow direction.

[0022] The dynamically adjustable flow guiding unit 2 includes a rotating shaft 201, which is distributed around the circumference of the air duct. Its top end is connected to a blade bearing 202 located at the center of the air duct via a bearing. Flow guiding blades 203 are fixedly installed on the rotating shaft 201. The other end of the rotating shaft 201 extends outward through the side wall of the air duct and is hinged to a rocker arm 204 at the outer extension. The center of the rocker arm 204 near the hinge has a through groove 205 at the other end. A transmission rod 206 is slidably connected inside the groove 205. An annular gear ring 207 is fixedly connected to the end of the transmission rod 206 away from the rocker arm 203. The annular gear ring 207 is slidably connected in a groove on the outer wall of the dynamically adjustable flow guiding unit 2. An active gear 208 is meshed with the outer side of the annular gear ring 207. The active gear 208 is connected to the output shaft of the adjusting motor 209.

[0023] The dynamically adjustable flow guiding unit 2 is connected to the power core unit 3 along the airflow direction. The power core unit 3 includes a motor 301 located outside the device. The output shaft of the motor 301 is perpendicular to the fan axis and extends into the power core unit 3. The top of its output shaft is provided with a driving helical gear 302, which meshes with a driven helical gear 303. The driven helical gear 303 is keyed to a transmission shaft 304. The transmission shaft 304 is connected to two sets of bearing seats 305 through bearings. The other end of the transmission shaft 304 is provided with an impeller 306.

[0024] Filter 1 has a honeycomb structure with the honeycomb pores evenly distributed in regular hexagonal shapes. This structure can increase the filtration area and improve the filtration efficiency. At the same time, the regular hexagonal structure has strong stability and can reduce the resistance when the airflow passes through.

[0025] Two sets of bearing housings 305 are respectively located on the drive shaft 304 near the driven helical gear 303 and the impeller 306, and the bearing housings 305 are fixedly connected to the inner wall of the power core unit 3. The drive shaft 304 and the bearings in the bearing housings 305 are interference-fitted. This distribution of the bearing housings 305 can provide stable support for the drive shaft 304 from both ends, reducing the shaking of the drive shaft 304 when it rotates. The interference fit between the drive shaft 304 and the bearings ensures a tight connection between the two and improves the reliability of the transmission.

[0026] The power core unit 3 is connected to the rectifier unit 4 along the airflow direction. The rectifier unit 4 has an inverted cone structure, which helps the airflow to converge and accelerate. The rectifier unit 4 has multiple sets of rectifier blades 5 arranged in a ring array inside. The rectifier blades 5 have a streamlined structure, and both ends of the rectifier blades 5 are fixedly connected to the inner sidewall of the rectifier unit 4. The streamlined rectifier blades 5 can effectively sort the airflow, reduce the generation of eddies, and improve the stability of the airflow output.

[0027] The filter 1 and the dynamically adjustable flow guiding unit 2, as well as the power core unit 3 and the rectifier unit 4, are all connected by magnetic attraction. The magnetic attraction connection is formed by a number of magnetic protrusions 6 evenly distributed on the mating parts of the two components, and the magnetic protrusions 6 of adjacent components attract each other. The magnetic attraction connection formed by the magnetic protrusions 6 is easy to operate, and can realize the quick assembly and disassembly of each unit, which is convenient for maintenance and replacement of parts. The evenly distributed magnetic protrusions 6 ensure the tightness of the connection and reduce airflow leakage.

[0028] The dynamically adjustable airflow guiding unit 2 and the power core unit 3 are connected by a locking mechanism. The locking mechanism includes a buckle 7 fixed to the edge of the air outlet of the dynamically adjustable airflow guiding unit 2 and a slot 8 opened at the edge of the air inlet of the power core unit 3. The buckle 7 and the slot 8 engage with each other. The locking connection structure formed by the buckle 7 and the slot 8 is stable and can ensure that the connection between the dynamically adjustable airflow guiding unit 2 and the power core unit 3 is reliable during the operation of the device, avoiding loosening due to vibration and other factors. At the same time, the disassembly and assembly process is also relatively convenient.

[0029] In summary, when the fan power unit of this split-type air duct design is running, the airflow enters from the inlet and is first filtered by the filter screen. The honeycomb filter screen structure can effectively intercept impurities and particulate matter in the air, providing a clean air source for subsequent airflow processing. The filtered airflow enters the dynamically adjustable guide unit. After the adjustment motor is started, it drives the active gear to rotate synchronously, causing the ring gear to rotate. The rotation of the ring gear causes the transmission rod to slide in the groove of the rocker arm, which in turn drives the rocker arm to swing around the rotation axis, ultimately achieving precise adjustment of the guide vane angle. This adapts to the airflow requirements under different operating conditions and ensures that the airflow enters the next unit at the optimal angle.

[0030] Subsequently, the guided airflow enters the core power unit, where an externally mounted motor begins operation. Its output shaft drives a driving helical gear, which meshes with a driven helical gear to transmit power to a transmission shaft. This transmission shaft, stably supported by two sets of bearings, rotates at high speed, simultaneously driving an impeller at its end. The impeller's rotation generates a powerful driving force on the airflow, providing it with sufficient pressure and velocity. Finally, the pressurized airflow enters an inverted conical rectifier unit. Streamlined rectifier blades arranged in a circular array within the unit streamline the turbulent airflow, eliminating eddies and turbulence, allowing the airflow to exit smoothly and uniformly from the outlet. Furthermore, the functional units are tightly connected via magnetic protrusions or snap-fit ​​mechanisms, ensuring the airtightness and operational continuity of the entire duct system.

[0031] This solution has significant advantages. In terms of structural design, it adopts a split layout and combines magnetic and latching connection methods, which not only makes the disassembly and assembly of each unit simple and quick, reducing the operation steps and time costs during maintenance, but also allows for flexible replacement or combination of unit components of different specifications according to different usage scenarios and functional requirements. This greatly improves the versatility and scenario adaptability of the equipment and reduces the overall replacement cost of the equipment.

[0032] In terms of performance, the gear-ring linkage adjustment method, through the precise coordination of multi-stage transmission, allows for more refined adjustment of the guide vane angle, ensuring that the airflow maintains a reasonable flow state under different air volumes and reducing energy loss caused by airflow impact. Regarding power transmission, the helical gear transmission features a stable transmission ratio and strong load-bearing capacity. Combined with the robust support of the drive shaft by the bearing housing, it effectively reduces vibration and noise during transmission, improves the stability and reliability of power transmission, and extends the service life of the equipment. Furthermore, the inverted conical rectifier unit and streamlined rectifier blades work together to optimize the outlet airflow field to the maximum extent, reducing airflow resistance and enabling the fan to output a higher effective air volume at the same power, thus reducing overall energy consumption and significantly enhancing the operating efficiency and long-term stability of the equipment.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split duct design fan power plant comprising a filter screen (1) characterised in that: The filter (1) is connected to a dynamically adjustable flow guiding unit (2) along the airflow direction: The dynamically adjustable flow guiding unit (2) includes a rotating shaft (201) distributed along the circumference of the air duct. Its top end is connected via a bearing to a blade bearing seat (202) located at the center of the air duct. Flow guiding blades (203) are fixedly mounted on the rotating shaft (201). The other end of the rotating shaft (201) extends outward through the side wall of the air duct and is hinged to a rocker arm (204) at its outer extension. The center of the rocker arm (204) near the hinge has a through-hole at its other end. A sliding groove (205) is provided, inside which a transmission rod (206) is slidably connected. An annular gear ring (207) is fixedly connected to one end of the transmission rod (206) away from the rocker arm (203). The annular gear ring (207) is slidably connected to a groove on the outer wall of the dynamically adjustable flow guiding unit (2). An active gear (208) is meshed with the outer side of the annular gear ring (207). The active gear (208) is connected to the output shaft of the regulating motor (209). The dynamically adjustable flow guiding unit (2) is connected to the power core unit (3) along the airflow direction. The power core unit (3) includes a motor (301) located outside the device. The output shaft of the motor (301) is perpendicular to the fan axis and extends into the power core unit (3). The top of its output shaft is provided with a driving helical gear (302). The driving helical gear (302) meshes with a driven helical gear (303). The driven helical gear (303) is keyed to a transmission shaft (304). The transmission shaft (304) is connected to two sets of bearing seats (305) through bearings. The other end of the transmission shaft (304) is provided with an impeller (306).

2. A split duct designed fan power plant as claimed in claim 1 wherein: The filter (1) has a honeycomb structure with its honeycomb pores evenly distributed in regular hexagonal shapes.

3. A split duct designed fan power plant as claimed in claim 1 wherein: The two sets of bearing housings (305) are respectively located on the drive shaft (304) near the driven helical gear (303) and impeller (306), and are fixedly connected to the inner wall of the power core unit (3). The drive shaft (304) is interference-fitted with the bearing in the bearing housing (305).

4. A split duct designed fan power plant as claimed in claim 1 wherein: The power core unit (3) is connected to a rectifier unit (4) along the airflow direction. The rectifier unit (4) is an inverted cone structure, and has multiple sets of rectifier blades (5) arranged in a ring array inside. The rectifier blades (5) are streamlined structures, and their two ends are fixedly connected to the inner sidewall of the rectifier unit (4).

5. A split duct design fan power plant as claimed in claim 1, wherein: The filter (1) and the dynamically adjustable flow guiding unit (2), as well as the power core unit (3) and the rectifier unit (4), are all connected by magnetic attraction. The magnetic attraction connection is that a number of magnetic protrusions (6) are evenly distributed at the mating parts of the two components, and the magnetic protrusions (6) of adjacent components attract each other.

6. A split duct design fan power plant as claimed in claim 1, wherein: The dynamically adjustable airflow guiding unit (2) and the power core unit (3) are connected by a latch. The latch includes a buckle (7) fixed to the edge of the air outlet of the dynamically adjustable airflow guiding unit (2) and a slot (8) opened at the edge of the air inlet of the power core unit (3). The buckle (7) and the slot (8) engage with each other.

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