Pressurizing energy-saving centrifugal fan

Abstract

The invention relates to the technical field of gas machinery, and discloses a pressurizing energy-saving centrifugal fan which comprises a limiting ring, a driving motor is fixedly connected into the limiting ring, an impeller frame is fixedly arranged at the output end of the driving motor, and fan blades are arranged in the impeller frame. A protection assembly and a transmission assembly are arranged on the outer wall of the impeller frame, a friction plate is fixedly connected to the outer wall of the transmission assembly, a circular gear is arranged on the outer wall of the friction plate, an annular rack is connected to the tooth end of the circular gear in a meshed mode, and a connecting frame is fixedly connected to the outer wall of the annular rack. Through the linkage design that a driving motor drives an impeller frame to be in linkage with a first bevel gear and a second bevel gear, in combination with mechanical transmission of a friction plate, a circular gear and an annular rack, automatic adjustment of the size of an air inlet of an air inlet pipe is achieved, opening and closing of a flow guide plate can be adjusted in real time according to the rotating speed of an impeller, the air inlet amount and air pressure are optimized, and turbulence losses are effectively reduced; and the working efficiency and performance of the fan are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas machinery, in particular to a pressurized energy-saving centrifugal fan. BACKGROUND

[0002] As a kind of ventilation equipment widely used in industrial, commercial and civil fields, centrifugal fan is mainly used for air conveying, pressurizing and ventilation, wherein centrifugal fan has important application in many fields such as air conditioning system, ventilation duct, industrial dust removal and material conveying, in order to improve the operation efficiency and performance of centrifugal fan, reduce energy consumption and maintenance cost, and ensure that the air intake of fan can reach the best state under different working conditions, therefore a pressurized energy-saving centrifugal fan is needed.

[0003] The air intake adjustment of traditional centrifugal fan usually relies on manual air valve or electronic control system, which has problems such as response lag, high energy consumption and complex maintenance, especially in variable working condition environment, it is difficult to realize efficient and stable operation, the air intake adjustment of traditional centrifugal fan usually adopts manual adjustment or simple mechanical baffle, which cannot adjust air intake in real time according to actual operation condition of fan (such as impeller speed, load change, etc.), which leads to that air intake of fan cannot reach the best state under different working conditions, affecting the operation efficiency and performance of fan. SUMMARY

[0004] In view of the deficiencies of prior art, the present application provides a pressurized energy-saving centrifugal fan, which solves the problem that the air intake adjustment of traditional centrifugal fan usually adopts manual adjustment or simple mechanical baffle, which cannot adjust air intake in real time according to actual operation condition of fan.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: A pressurized energy-saving centrifugal fan, comprising a limiting ring, the inside of the limiting ring is fixedly connected with a driving motor, the output end of the driving motor is fixedly provided with an impeller frame, the inside of the impeller frame is provided with a fan blade, the outer wall of the impeller frame is provided with a protection assembly and a transmission assembly, the outer wall of the transmission assembly is fixedly connected with a friction plate, the outer wall of the friction plate is provided with a circular gear, the tooth end of the circular gear is meshingly connected with a ring gear, the outer wall of the ring gear is fixedly connected with a connecting frame, the outer wall of the connecting frame is rotatably connected with a support frame, the outer wall of the connecting frame is rotatably connected with a connecting rod, the inside of the connecting rod is fixedly connected with a first connecting shaft, the outer wall of the first connecting shaft is rotatably connected with a guide plate, the inside of the guide plate is fixedly connected with a second connecting shaft, the outer wall of the support frame is fixedly connected with a fixed shaft, the inside of the connecting frame is provided with a limiting groove, and the outer wall of the fixed shaft is fixedly connected with a return spring.

[0006] By adopting the technical scheme, the linkage design of the impeller frame, the first bevel gear and the second bevel gear is driven by the driving motor, and the mechanical transmission of the friction plate, the gear and the ring gear is combined, so that the automatic adjustment of the size of the air inlet of the air inlet pipe is realized, the pure mechanical linkage system does not need an additional control unit, the opening and closing of the guide plate can be adjusted in real time according to the impeller speed, the air inlet and the air pressure are optimized, the turbulent loss is effectively reduced, the working efficiency and performance of the fan are improved, and the manual intervention and maintenance cost are reduced.

[0007] Preferably, the protection assembly comprises a lower protection shell, an outer wall of the lower protection shell is provided with an upper protection shell, and an outer wall of the upper protection shell is fixedly connected with the air inlet pipe.

[0008] Preferably, an outer wall of the impeller frame is rotationally connected in the inside of the lower protection shell, an inner wall of the air inlet pipe is fixedly connected with the outer wall of the support frame, an outer wall of the lower protection shell is arranged on the outer wall of the driving motor, and an outer wall of the driving motor is provided with the mounting assembly.

[0009] Preferably, the mounting assembly comprises a connecting frame, an inner wall of the connecting frame is fixedly connected with the outer wall of the driving motor, and an outer wall of the connecting frame is fixedly connected with the mounting seat.

[0010] Preferably, the transmission assembly comprises a first connecting column, a first bevel gear is fixedly connected with an outer wall of the first connecting column, a limiting block is rotationally connected with the outer wall of the first connecting column, a second bevel gear is meshingly connected with a tooth end of the first bevel gear, a second connecting column is fixedly connected with an outer wall of the second bevel gear, and the outer wall of the second connecting column is fixedly connected with an outer wall of the friction plate.

[0011] Preferably, a bottom end of the first connecting column is fixedly connected with the outer wall of the impeller frame, an outer wall of the limiting block is fixedly connected with an inner wall of the upper protection shell, and an outer wall of the second connecting column is rotationally connected in the inside of the limiting block, the upper protection shell and the support frame.

[0012] Preferably, the transmission assembly is arranged in the inside of the protection assembly, an outer wall of the support frame is fixedly connected in the inside of the protection assembly, an outer wall of the guide plate is slidably connected with the outer wall of the support frame, and an outer wall of the second connecting shaft is rotationally connected in the inside of the support frame.

[0013] Preferably, an outer wall of the fixing shaft is slidably connected in the inside of the connecting frame, the outer wall of the fixing shaft is slidably connected with an inner wall of the limiting groove, and an outer wall of the reset spring is slidably connected with the inner wall of the limiting groove.

[0014] Preferably, outer walls of the lower protection shell and the upper protection shell are both provided with a fixing frame, an outer wall of the fixing frame is rotationally connected with a turbine body, an outer wall of the turbine body is fixedly connected with a shaft coupling, and an outer wall of the shaft coupling is fixedly connected in the inside of the fixing frame.

[0015] Preferably, the bottom end of the shaft coupling is provided with a turbine generator, the outer wall of the turbine generator is fixedly connected to the inside of the fixed frame, and the lower surface of the turbine generator is provided with a battery pack.

[0016] Working principle: when the fan is used, the whole body can be quickly and stably installed to the required position under the connection of the connecting frame and the mounting seat, the driving motor is started, the impeller frame is driven to rotate in the lower protection shell through the driving motor, and then the fan blades are driven to rotate, the first bevel gear is driven to rotate through the first connecting column, the second connecting column is driven to rotate in the limiting block through the second bevel gear, the circular gear is driven to rotate through the friction plate, the circular gear is driven to rotate on the supporting frame through the annular rack under the limiting of the fixed shaft and the limiting groove, the fixed shaft rotates in the limiting groove and extrudes the return spring to make it shrink, the connecting rod is pulled to rotate through the connecting frame, the guide plate is driven to rotate on the second connecting shaft through the first connecting shaft, and then the size of the air inlet of the air inlet pipe can be adjusted. When the impeller frame and the fan blades rotate to drive the airflow to be discharged, the kinetic energy of the airflow impacts the blades of the turbine body, so that the turbine body rotates, the rotating shaft of the turbine body is connected with the rotor shaft of the turbine generator through the shaft coupling, so that power transmission is realized, the electric energy generated by the turbine generator is transmitted to the battery pack through rectification and inversion circuit processing through the wire, and the electric energy can be stored through the battery pack.

[0017] The application provides a pressurized energy-saving centrifugal fan. 1、The driving motor drives the impeller frame, the first bevel gear and the second bevel gear in linkage, and the mechanical transmission of the friction plate, the circular gear and the annular rack is combined, so that the automatic adjustment of the size of the air inlet of the air inlet pipe is realized, the pure mechanical linkage system does not need an additional control unit, the opening and closing of the guide plate can be adjusted in real time according to the rotating speed of the impeller, the air inlet amount and the air pressure are optimized, the turbulent loss is effectively reduced, the working efficiency and the performance of the fan are improved, manual intervention and maintenance cost are reduced, and the like.

[0018] 2、The turbine body in the application is driven to rotate by the kinetic energy of the airflow, power is transmitted to the turbine generator through the shaft coupling, the waste gas residual pressure is converted into electric energy and stored in the battery pack, the energy recovery system directly utilizes the kinetic energy of the airflow discharged by the fan itself, the dependence on external power supply is reduced, the energy cycle utilization is realized, and the overall system energy consumption is reduced.

[0019] 3、The cooperation design of the limiting block and the reset spring in the application, combined with the sliding constraint of the fixed shaft in the limiting groove, can ensure the stability of the guide plate adjustment process, the friction plate slips to protect the transmission component when overloaded, the reset spring automatically resets the initial opening and closing position of the guide plate after being pressed, the double mechanism enhances the impact resistance and long-term operation reliability of the system, and mechanical structure damage caused by sudden load is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 2 It is a fixed frame schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 3 It is a fan blade schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 4 It is a connection frame schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 5 It is a friction plate schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 6 It is a guide plate schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 7 It is a reset spring schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application; Figure 8 It is a coupling schematic view of a kind of pressure-increasing energy-saving centrifugal fan of the application.

[0021] Among them, 1, drive motor;2, impeller frame;3, protection assembly;301, lower protection shell;302, upper protection shell;303, air inlet pipe;4, mounting assembly;401, connecting frame;402, mounting seat;5, fan blade;6, transmission assembly;601, first connecting column;602, first bevel gear;603, second bevel gear;604, second connecting column;605, limiting block;7, friction plate;8, circular gear;9, ring gear;10, connection frame;11, support frame;12, connecting rod;13, first connecting shaft;14, guide plate;15, second connecting shaft;16, fixed shaft;17, limiting groove;18, reset spring;19, fixed frame;20, turbine body;21, coupling;22, turbine generator;23, battery pack;24, limiting ring. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be described clearly and completely in connection with the drawings of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0023] Please refer to the drawings Figure 1 -attached Figure 7 The embodiment of the present application provides a kind of pressurization energy-saving centrifugal fan, including limit ring 24, the inside fixed connection of limit ring 24 is driven motor 1, the output end of driven motor 1 is fixedly provided with impeller frame 2, the inside of impeller frame 2 is provided with fan blade 5, the outer wall of impeller frame 2 is provided with protection assembly 3 and transmission assembly 6, the outer wall of transmission assembly 6 is fixedly connected with friction plate 7, the outer wall of friction plate 7 is provided with round gear 8, the tooth end of round gear 8 is engagedly connected with annular rack 9, the outer wall of annular rack 9 is fixedly connected with connecting frame 10, the outer wall of connecting frame 10 is rotatably connected with support frame 11, the outer wall of connecting frame 10 is rotatably connected with connecting rod 12, the inside of connecting rod 12 is fixedly connected with first connecting shaft 13, the outer wall of first connecting shaft 13 is rotatably connected with guide plate 14, the inside of guide plate 14 is fixedly connected with second connecting shaft 15, the outer wall of support frame 11 is fixedly connected with fixed shaft 16, the inside of connecting frame 10 is provided with limit slot 17, the outer wall of fixed shaft 16 is fixedly connected with reset spring 18.

[0024] Specifically, the driving motor 1 can be fixed by the limiting ring 24, the driving motor 1 is started, the driving motor 1 drives the impeller frame 2 to rotate in the lower protection shell 301, and then drives the fan blade 5 to rotate, the impeller frame 2 is connected to the transmission assembly 6, the friction plate 7 drives the circular gear 8 to rotate, the circular gear 8 drives the connecting frame 10 to rotate on the support frame 11 under the limiting action of the fixed shaft 16 and the limiting groove 17, the fixed shaft 16 drives the reset spring 18 to shrink while rotating in the limiting groove 17, the connecting frame 10 drives the connecting rod 12 to rotate, the connecting rod 12 drives the guide plate 14 to rotate on the second connecting shaft 15 through the first connecting shaft 13, and then the size of the air inlet of the air inlet pipe 303 is adjusted, the fan blade 5 rotates under the drive of the impeller frame 2, mechanical energy is converted into kinetic energy of airflow through the shape and opening and closing design, centrifugal force is generated, and airflow obtains pressure and speed, the friction plate 7 is a key component in the transmission system, the main function of the friction plate 7 is to transmit the rotary motion of the second connecting column 604 to the circular gear 8 through friction, in the normal operation state, the friction plate 7 realizes effective transmission of power through the friction between the second connecting column 604 and the circular gear 8, the friction of the friction plate 7 is limited, when the load torque exceeds the threshold value due to the increase of the resistance of the guide plate 14, the friction plate 7 and the end surface of the circular gear 8 slide, the transmission chain is disconnected, and the gear set and the connecting rod 12 are prevented from being damaged, the limiting groove 17 cooperates with the fixed shaft 16 to limit the movement range of the connecting frame 10, and ensures that the connecting frame 10 moves in a predetermined track, the reset spring 18 is pressed when the connecting frame 10 moves, stores elastic potential energy, and releases energy when needed, so that the connecting frame 10 can be automatically reset, and then the operation process is simplified and the automation degree of the system is improved.

[0025] Please refer to the accompanying Figure 1 and the accompanying Figure 2 , the protection assembly 3 comprises a lower protection shell 301, the outer wall of the lower protection shell 301 is provided with an upper protection shell 302, and the outer wall of the upper protection shell 302 is fixedly connected with an air inlet pipe 303; the outer wall of the impeller frame 2 is rotatably connected in the inner part of the lower protection shell 301, the inner wall of the air inlet pipe 303 is fixedly connected to the outer wall of the support frame 11, the outer wall of the lower protection shell 301 is arranged on the outer wall of the driving motor 1, and the outer wall of the driving motor 1 is provided with a mounting assembly 4.

[0026] Specifically, the upper protection shell 302 and the lower protection shell 301 jointly constitute a double-layer protection structure, and then the impeller frame 2 and the fan blade 5 are protected from interference and damage from external factors such as dust, foreign matters and the like during operation, and a stable operation environment is provided for the impeller frame 2, the upper protection shell 302 and the lower protection shell 301 are detachably assembled, so that the installation, maintenance and repair of the fan are facilitated.

[0027] Please refer to the attached drawings Figure 1 The mounting assembly 4 comprises a connecting frame 401, the inner wall of which is fixedly connected to the outer wall of the driving motor 1, and the outer wall of the connecting frame 401 is fixedly connected with a mounting seat 402.

[0028] Specifically, when the fan is used, the whole can be quickly and stably mounted to the required position under the connection of the connecting frame 401 and the mounting seat 402, wherein the connecting frame 401 plays a role in supporting and fixing the driving motor 1, and it serves as an intermediate connecting component to ensure that the driving motor 1 can be stably mounted on the mounting seat 402, and the mounting seat 402 plays a role in fixing the whole at the required position, and it is connected to the base structure such as the ground, the wall or the support through bolts.

[0029] Please refer to the attached drawings Figure 3 - the attached drawings Figure 7 The transmission assembly 6 comprises a first connecting column 601, the outer wall of which is fixedly connected with a first bevel gear 602, the outer wall of the first connecting column 601 is rotationally connected with a limiting block 605, the tooth end of the first bevel gear 602 is meshingly connected with a second bevel gear 603, the outer wall of the second bevel gear 603 is fixedly connected with a second connecting column 604, the outer wall of the second connecting column 604 is fixedly connected to the outer wall of the friction plate 7; the bottom end of the first connecting column 601 is fixedly connected to the outer wall of the impeller frame 2, the outer wall of the limiting block 605 is fixedly connected to the inner wall of the upper protective shell 302, the outer wall of the second connecting column 604 is rotationally connected to the inside of the limiting block 605, the upper protective shell 302 and the support frame 11; the transmission assembly 6 is arranged in the inside of the protection assembly 3, the outer wall of the support frame 11 is fixedly connected to the inside of the protection assembly 3, the outer wall of the guide plate 14 is slidingly connected to the outer wall of the support frame 11, and the outer wall of the second connecting shaft 15 is rotationally connected to the inside of the support frame 11; the outer wall of the fixed shaft 16 is slidingly connected to the inside of the connecting frame 10, the outer wall of the fixed shaft 16 is slidingly connected to the inner wall of the limiting groove 17, and the outer wall of the return spring 18 is slidingly connected to the inner wall of the limiting groove 17.

[0030] Specifically, the first connecting column 601 drives the first bevel gear 602 to rotate, and the first bevel gear 602 drives the second connecting column 604 to rotate in the limiting block 605 through the second bevel gear 603. The limiting block 605 provides a limiting action for the first connecting column 601 and the second connecting column 604, ensures that they rotate within a predetermined track, and enhances the overall structural stability of the transmission assembly 6 through the supporting action of the limiting block 605, reduces mechanical failures caused by vibration or impact, and the fixed shaft 16 is in sliding fit with the connecting frame 10, which ensures the stability of the movement track of the guide vane 14 during adjustment and avoids deflection. The fixed shaft 16 slides in the limiting groove 17 to limit the maximum opening degree of the guide vane 14, prevent mechanical interference, and the length of the limiting groove 17 restricts the sliding distance of the fixed shaft 16, indirectly controls the adjustment range of the guide vane 14, cooperates with the return spring 18 to push the fixed shaft 16 back to the original position after the load disappears, and restores the initial position of the guide vane 14. When the guide vane 14 is deviated by air pressure, the return spring 18 stores elastic potential energy, and pushes the fixed shaft 16 back to the original position when the pressure disappears.

[0031] Please refer to the accompanying Figure 2 and the accompanying Figure 8 The outer wall of the lower protective shell 301 and the upper protective shell 302 is provided with a fixed frame 19, the inner wall of the fixed frame 19 is rotatably connected with a turbine body 20, the outer wall of the turbine body 20 is fixedly connected with a shaft coupling 21, and the outer wall of the shaft coupling 21 is fixedly connected in the interior of the fixed frame 19; the bottom end of the shaft coupling 21 is provided with a turbine generator 22, the outer wall of the turbine generator 22 is fixedly connected in the interior of the fixed frame 19, and the lower surface of the turbine generator 22 is provided with a battery pack 23.

[0032] Specifically, when the impeller frame 2 and the fan blade 5 rotate to drive the airflow to be discharged, the kinetic energy of the airflow will impact the blades of the turbine body 20, so that the turbine body 20 rotates. The rotating shaft of the turbine body 20 is connected with the rotor shaft of the turbine generator 22 through the shaft coupling 21, so as to realize power transmission. The electric energy generated by the turbine generator 22 is transmitted to the battery pack 23 through rectification and inversion circuit processing and wires. The battery pack 23 can store electric energy. The fixed frame 19 provides stable support for the turbine body 20 and the turbine generator 22, so that they can maintain a fixed position during operation, reduce vibration and shaking during operation, and improve the operation stability of the system. The turbine body 20 transmits the rotary motion to the turbine generator 22 through the shaft coupling 21, converts the kinetic energy of the airflow into electric energy, and the shaft coupling 21 can compensate for the axial, radial and angular deviations between the turbine body 20 and the turbine generator 22, so as to ensure the stable operation of the transmission system. The turbine generator 22 plays a role of rectification and inversion circuit processing, so as to ensure the stability of the output electric energy. The stored electric energy can provide standby power supply for auxiliary equipment of the fan or other equipment when needed.

[0033] The booster energy-saving centrifugal fan in the embodiment is used, first, the whole is quickly and stably installed to the required position under the connection of the connecting frame 401 and the mounting seat 402, the driving motor 1 is started, the impeller frame 2 is driven to rotate in the lower protection shell 301 through the driving motor 1, and then the fan blade 5 is driven to rotate, the impeller frame 2 drives the first bevel gear 602 to rotate through the first connecting column 601, the first bevel gear 602 drives the second connecting column 604 to rotate in the limiting block 605 through the second bevel gear 603, the second connecting column 604 drives the circular gear 8 to rotate through the friction plate 7, wherein the friction force of the friction plate 7 is limited, when the resistance of the guide vane 14 is adjusted to increase and the load torque exceeds the threshold value, the sliding friction occurs between the friction plate 7 and the end surface of the circular gear 8, the transmission chain is disconnected, the damage of the gear set, the connecting rod 12 and other components is avoided, under the limiting of the fixed shaft 16 and the limiting groove 17, the circular gear 8 drives the connecting frame 10 to rotate on the support frame 11 through the annular rack 9, the fixed shaft 16 is extruded to make the return spring 18 shrink while rotating in the limiting groove 17, the connecting rod 12 is pulled to rotate through the connecting frame 10, the connecting rod 12 drives the guide vane 14 to rotate on the second connecting shaft 15 through the first connecting shaft 13, and then the size of the air inlet of the air inlet pipe 303 can be adjusted, the opening and closing of the guide vane 14 can be adjusted in real time according to the impeller rotating speed, the air inlet and the air pressure are optimized, the turbulent loss is effectively reduced, the working efficiency and performance of the fan are improved, manual intervention and maintenance cost are reduced; When the impeller frame 2 and the fan blade 5 rotate to drive the airflow to be discharged, the kinetic energy of the airflow impacts the blades of the turbine body 20, the turbine body 20 rotates, the rotating shaft of the turbine body 20 is connected with the rotor shaft of the turbine generator 22 through the shaft coupling 21, and then power transmission is realized, the electric energy emitted by the turbine generator 22 is transmitted to the battery pack 23 through rectification and inversion circuit processing and wires, the electric energy can be stored through the battery pack 23, the dependence on external power supply is reduced by directly utilizing the kinetic energy of the discharged airflow of the fan, especially for high pressure difference working conditions, energy recycling is realized, and the overall system energy consumption is reduced.

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

Claims

1. A supercharged energy-saving centrifugal fan comprising a limit ring (24), characterized in that, The inside of the limiting ring (24) is fixedly connected with a driving motor (1), the output end of the driving motor (1) is fixedly provided with an impeller frame (2), the inside of the impeller frame (2) is provided with a fan blade (5), the outer wall of the impeller frame (2) is provided with a protection assembly (3) and a transmission assembly (6), the outer wall of the transmission assembly (6) is fixedly connected with a friction plate (7), the outer wall of the friction plate (7) is provided with a round gear (8), the tooth end of the round gear (8) is engagedly connected with a ring gear (9), the outer wall of the ring gear (9) is fixedly connected with a connecting frame (10), the outer wall of the connecting frame (10) is rotatably connected with a support frame (11), the outer wall of the connecting frame (10) is rotatably connected with a connecting rod (12), the inside of the connecting rod (12) is fixedly connected with a first connecting shaft (13), the outer wall of the first connecting shaft (13) is rotatably connected with a guide plate (14), the inside of the guide plate (14) is fixedly connected with a second connecting shaft (15), the outer wall of the support frame (11) is fixedly connected with a fixed shaft (16), the inside of the connecting frame (10) is provided with a limiting groove (17), and the outer wall of the fixed shaft (16) is fixedly connected with a return spring (18).

2. A pressure-boosting energy-saving centrifugal fan according to claim 1, characterized in that The protection assembly (3) comprises a lower protection shell (301), the outer wall of the lower protection shell (301) is provided with an upper protection shell (302), and the outer wall of the upper protection shell (302) is fixedly connected with an air inlet pipe (303).

3. A pressure-boosting energy-saving centrifugal fan according to claim 2, characterized in that The outer wall of the impeller frame (2) is rotatably connected in the inside of the lower protection shell (301), the inner wall of the air inlet pipe (303) is fixedly connected to the outer wall of the support frame (11), the outer wall of the lower protection shell (301) is arranged on the outer wall of the driving motor (1), and the outer wall of the driving motor (1) is provided with a mounting assembly (4).

4. A pressure-boosting energy-saving centrifugal fan according to claim 3, characterized in that The mounting assembly (4) comprises a connecting frame (401), the inner wall of the connecting frame (401) is fixedly connected to the outer wall of the driving motor (1), and the outer wall of the connecting frame (401) is fixedly connected with a mounting seat (402).

5. The turbocharged energy-saving centrifugal fan according to claim 1, characterized in that, The transmission assembly (6) comprises a first connecting column (601), the outer wall of the first connecting column (601) is fixedly connected with a first bevel gear (602), the outer wall of the first connecting column (601) is rotatably connected with a limiting block (605), the tooth end of the first bevel gear (602) is engagedly connected with a second bevel gear (603), the outer wall of the second bevel gear (603) is fixedly connected with a second connecting column (604), and the outer wall of the second connecting column (604) is fixedly connected to the outer wall of the friction plate (7).

6. A supercharged energy-saving centrifugal fan according to claim 5, characterized in that The bottom end of the first connecting column (601) is fixedly connected to the outer wall of the impeller frame (2), the outer wall of the limiting block (605) is fixedly connected to the inner wall of the upper protection shell (302), and the outer wall of the second connecting column (604) is rotatably connected in the inside of the limiting block (605), the upper protection shell (302) and the support frame (11).

7. The turbocharged energy-saving centrifugal fan according to claim 1, characterized in that The transmission assembly (6) is arranged inside the protection assembly (3), the outer wall of the support frame (11) is fixedly connected to the inside of the protection assembly (3), the outer wall of the guide plate (14) is slidably connected to the outer wall of the support frame (11), and the outer wall of the second connecting shaft (15) is rotatably connected to the inside of the support frame (11).

8. The turbocharged energy-saving centrifugal fan according to claim 1, characterized in that The outer wall of the fixed shaft (16) is slidably connected to the inside of the connecting frame (10), the outer wall of the fixed shaft (16) is slidably connected to the inner wall of the limiting groove (17), and the outer wall of the reset spring (18) is slidably connected to the inner wall of the limiting groove (17).

9. A pressure boosting energy saving centrifugal fan according to claim 2, characterized in that The outer walls of the lower protection shell (301) and the upper protection shell (302) are both provided with fixed frames (19), the inner walls of the fixed frames (19) are rotatably connected with turbine bodies (20), the outer walls of the turbine bodies (20) are fixedly connected with couplings (21), and the outer walls of the couplings (21) are fixedly connected to the insides of the fixed frames (19).

10. A supercharged energy-saving centrifugal fan according to claim 9, characterized in that The bottom end of the coupling (21) is provided with a turbine generator (22), the outer wall of the turbine generator (22) is fixedly connected to the inside of the fixed frame (19), and the lower surface of the turbine generator (22) is provided with a battery pack (23).

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