TWI692919B - Flywheel energy storage fan - Google Patents

Abstract

The invention provides a flywheel energy storage fan, including a base, a fan motor as a motor and a generator, and a flywheel energy storage device provided with a flywheel rotating body, the base is provided with a shell portion and a center pillar portion, The center pillar portion is provided on the shell portion, the shell portion is provided with a vacuum chamber and a shaft seat provided in the vacuum chamber, a rotating shaft of the fan motor is pivotally provided with the center pillar portion and the shaft seat, The flywheel rotating body is arranged on the rotating shaft in the vacuum chamber, and the design of the invention can achieve the effect of energy saving and power saving.

Description

Flywheel energy storage fan

The invention relates to a flywheel energy storage fan, in particular to a flywheel energy storage fan that can achieve energy saving.

In order to effectively save energy, current information and communication equipment often controls the internal cooling fans at different peak and off-peak periods to have different rotation speeds to meet the cooling requirements in different periods. The conventional cooling fan mainly controls the acceleration or deceleration of the fan by directly controlling the voltage output through a processor on the motherboard or using pulse width modulation (PWM). The motor in the existing conventional cooling fan is designed as an electric motor. The electric motor mainly converts the electrical energy into the mechanical energy of the fan directly after being energized, so as to drive the cooling fan to rotate to generate airflow to force the heat dissipation of the heating element. But it extends another problem. The conventional cooling fan can only convert electrical energy into mechanical energy in one direction, so that the energy of the cooling fan during the speed reduction process cannot be effectively reused, resulting in direct loss of energy and waste. Can not achieve the effect of energy saving.

An object of the present invention is to provide a flywheel energy storage fan that can achieve energy saving.

Another object of the present invention is to provide a flywheel energy storage device that is driven by a fan through a flywheel energy storage device and synchronously stores and converts mechanical energy into electrical energy and directly provides it back to the fan, thereby achieving the effect of efficiently using energy fan.

To achieve the above object, the present invention provides a flywheel energy storage fan, which includes a base, a fan motor as a motor and a generator, and a flywheel energy storage device. The base is provided with a shell portion and a center pillar The central column is provided on the shell, the shell is provided with a vacuum chamber and a shaft seat provided in the vacuum chamber, the fan motor is provided with a fan stator and a rotatable relative to the fan stator A fan rotor, the fan stator is disposed on the center pillar portion, the fan rotor has a fan wheel and a rotating shaft, one end of the rotating shaft is fixed on the fan wheel, the other end of the rotating shaft and the center pillar portion And the shaft seat are pivotally arranged, the flywheel energy storage device is provided with a flywheel rotating body, the flywheel rotating body is disposed on the rotating shaft in the vacuum chamber; through the design of the flywheel energy storage fan of the present invention, energy saving can be achieved The effect of saving electricity and energy is effectively utilized.

The invention also provides a flywheel energy storage fan, which includes a base, a fan motor, and a flywheel energy storage device. The base is provided with a shell portion and a center pillar portion. The center pillar portion is provided on the shell portion. The shell is provided with a vacuum chamber and a shaft seat provided in the vacuum chamber. The fan motor is provided with a fan stator and a fan rotor rotatable relative to the fan stator. The fan stator is provided on the center pillar portion. The fan rotor has a fan wheel and a rotating shaft, one end of the rotating shaft is fixed on the fan wheel, the other end of the rotating shaft is pivotally provided with the center pillar portion and the shaft seat, and the flywheel energy storage device is provided There is a flywheel rotating body and a motor as a motor and a generator, the flywheel rotating body is provided on the rotating shaft in the vacuum chamber, and the motor in the vacuum chamber is correspondingly arranged with the flywheel rotating body; The design of the flywheel energy storage fan makes it possible to achieve the effects of energy saving, energy saving and effective utilization of energy.

1: Flywheel energy storage fan

10: Dock

101: Shell

1011: Shell

10111: protrusion

1012: bottom plate

103: vacuum chamber

104: Shaft seat

1041: To accommodate holes

105: Center column

1051: boss

1052, 1053: first and second tanks

20: fan motor, fan motor

201: Fan stator

2011: Silicon steel sheet group

2012: coil group

202: circuit board

204: fan rotor

2041: Fan wheel

20411: Blade

20412: Wheel

20413: Containment hole

2043: Magnetic parts

2044: Rotating axis

2051, 2052: first and second rotor bearings

30: Flywheel energy storage device

301: Flywheel rotating body

3011: Groove

302: Motor

3021, 3022: first and second bearings

3023: Motor stator

30231: Silicon steel sheet set

30232: coil group

3024: Motor rotor

40: control circuit

FIG. 1 is a three-dimensional exploded view of the first embodiment of the invention.

FIG. 2 is a three-dimensional schematic diagram of the first embodiment of the invention.

FIG. 2A is a schematic cross-sectional view of the first embodiment of the invention.

FIG. 3 is a block diagram of the first embodiment of the invention.

FIG. 4 is a three-dimensional exploded view of the second embodiment of the invention.

FIG. 5 is a three-dimensional schematic diagram of a second embodiment of the invention.

FIG. 5A is a schematic cross-sectional view of a second embodiment of the invention.

FIG. 5B is a schematic cross-sectional view of an alternative embodiment of the second embodiment of the present invention.

Fig. 6 is a block diagram of a second embodiment of the invention.

The above objects, structural and functional characteristics of the present invention will be described based on the preferred embodiments of the accompanying drawings.

The present invention provides a flywheel energy storage fan. Please refer to FIG. 1 for a three-dimensional exploded view of the first embodiment of the present invention; FIG. 2 for a three-dimensional assembled schematic view of the first embodiment of the present invention; FIG. 3 for the present invention Block diagram of the first embodiment. The flywheel energy storage fan 1 is shown as an axial fan (hereinafter referred to as a fan) in this embodiment, but it is not limited to this. In specific implementation, a centrifugal fan or other fan that can generate airflow (such as (Cross flow fan, blower fan or diagonal flow fan). The flywheel energy storage fan 1 includes a base 10, a fan motor 20 as a motor and a generator, and a flywheel energy storage device 30. The base 10 is provided with a shell portion 101 and a center pillar portion 105. The portion 101 is provided with a vacuum chamber 103, a housing 1011, a bottom plate 1012 and a shaft seat 104 provided in the vacuum chamber 103, the housing 1011 is covered on the bottom plate 1012, and the center pillar portion 105 is protruded On an upper side of the housing 1011 corresponding to the shaft base 104, the center pillar portion 105 is a part of the housing itself, and the center pillar portion 105 is provided with a boss 1051, which respectively corresponds to the center pillar portion 105 A top end and a bottom end define a first accommodating slot 1052 and a second accommodating slot 1053, the first and second accommodating slots 1052, 1053 are used to receive a second rotor bearing 2052 and a first bearing 3021, respectively, and The housing 1011, the bottom plate 1012, and the center pillar portion 105 jointly define the vacuum chamber 103. In this embodiment, the vacuum chamber 103 extends from below the boss 1051 of the center pillar portion 105 to the housing 1011 and the bottom plate 1012. A vacuum chamber 103 that maintains a vacuum state is defined on the inner side of.

The shaft seat 104 is disposed at the center of the bottom plate 1012 inside the vacuum chamber 103. The shaft seat 104 is provided with a receiving hole 1041 for receiving a second bearing 3022, and the first The bearing 3021 and the corresponding second bearing 3022 are located in the vacuum chamber 103 of the shell 101. The fan motor 20 is provided with a fan stator 201 and a fan rotor 204 rotatable relative to the fan stator 201. The fan stator 201 is provided on the peripheral side of the center pillar portion 105. The fan stator 201 has a silicon steel sheet group 2011 1. A coil assembly 2012 and a circuit board 202 wound on the silicon steel sheet assembly 2011, the circuit board 202 is provided with a control circuit 40 (such as including a processor (such as a central processing unit, a microcontroller or a digital signal processor ) And other electronic components (such as drive switching elements, Hall elements)), the circuit board 202 (such as a flexible printed circuit board 202 or a rigid printed circuit board 202) is electrically connected to the coil assembly 2012 of the fan stator 201, and the A microcontroller ( Microcontroller Unit, MCU) on the circuit board 202 can be used to control the opening and closing of the fan motor 20, the rotational speed (such as acceleration or deceleration), or other arithmetic processing. The fan rotor 204 has a fan wheel 2041, a rotating shaft 2044, and a magnetic member 2043. One end of the rotating shaft 2044 is fixed on the fan wheel 2041, and the other end of the rotating shaft 2044 is connected to the center column portion 105 and the shaft The seat 104 is pivotally arranged, and a sealing member (such as a sealing ring; not shown) is provided between the rotating shaft 2044 and the boss 1051 of this embodiment to seal the rotating shaft 2044 and the sealing member. The sealing member isolates the vacuum chamber 103 in the housing from the outside to effectively maintain the vacuum chamber 103 in a vacuum state.

The fan wheel 2041 is provided with a receiving hole 20413 for receiving a first rotor bearing 2051. The first and second rotor bearings 2051, 2052 and the first and second bearings 3021, 3022 are on the same rotating shaft 2044 On the line, the first and second rotor bearings 2051, 2052 and the first and second bearings 3021, 3022 are used to support the fan rotor 204 by pivoting with the corresponding rotating shaft 2044. The fan wheel 2041 further includes a plurality of blades 20411 and a hub 20412, the blades 20411 are looped on the outer peripheral side of the hub 20412, and the magnetic member 2043 (such as a magnet or permanent magnet) is disposed inside the hub 20412, and It faces the fan stator 201 on the center pillar portion 105. The flywheel energy storage device 30 and the fan rotor 204 are located on the same rotating shaft 2044 The flywheel energy storage device 30 is provided with a flywheel rotating body 301. The flywheel rotating body 301 is shown as a metal material (such as alloy steel material, iron material, titanium alloy material or other metal materials) in this embodiment, but it is not Limited to this, in specific implementation, the flywheel rotating body 301 can be selected from a composite material (such as carbon fiber and resin composite material), plastic material or ceramic material. The size of the flywheel energy storage device 30 may be greater than, equal to or less than the size of the fan motor 20.

The flywheel rotating body 301 is provided on the rotating shaft 2044 in the vacuum chamber 103, and the flywheel rotating body 301 is shown in this embodiment as a disk. The flywheel rotating body 301 is used in the fan motor 20 as Driven by a motor, the flywheel rotating body 301 is accelerated under high-speed rotation, and energy is stored as rotational kinetic energy (or mechanical energy), or the fan motor 20 is used as a generator to use the flywheel rotating body 301 to release energy to drive the engine. While the motor rotates and gradually slows down, the generator converts the kinetic energy into electrical energy and supplies it to the fan motor 20 for the motor to continue to use, so that the energy can be effectively used to increase the maximum benefit. In one embodiment, the flywheel rotating body 301 is generally in the form of a thin wheel ring or a hollow disc shape or other shapes (such as a flat disc shape with a hub 20412). In another embodiment, the flywheel rotating body can be pivotally mounted on the rotating shaft through a bearing (such as a mechanical bearing or a magnetic bearing).

When the fan (such as an axial fan) receives an input power supply (such as a DC power supply), the processor is controlled to drive the fan motor 20 to operate as a motor, and the fan motor 20 will drive the flywheel in the vacuum chamber 103 The rotating body 301 rotates, and the flywheel rotating body 301 is rotated at a high speed in the vacuum chamber 103 in a vacuum state, so that the flywheel rotating body 301 is less likely to operate under load, and then the flywheel rotating body 301 is driven by the fan motor 20 The kinetic energy will be stored in the flywheel rotating body 301 under rotation. At this time, if the fan decelerates, the flywheel rotating body 301 will also synchronously decelerate. The flywheel rotating body 301 will also drive the fan motor 20 into a generator. Rotate, the generator will directly provide the generated electrical energy back to the control circuit 40 for use, so that the control circuit 40 can use the electrical energy provided by the generator for any arithmetic processing or other control (such as wind Fan speed-up operation), so the energy storage density of the flywheel rotating body 301 through the flywheel energy storage device 30 is large, the energy conversion efficiency is high, the charge and discharge are fast and the life is long, so that the energy during the operation and deceleration of the fan can be effectively Conversion and utilization to effectively achieve better energy-saving and power-saving effects. In the actual implementation of the present invention, when the fan is powered on, the control circuit 40 receives the power provided (or generated) by the fan motor 20 to the generator at the same time, and the processor of the control circuit 40 can control the input power temporarily Allowed to be provided to the fan motor 20; if the processor of the control circuit 40 detects that the fan motor 20 provides a slightly lower power to the generator and is not sufficient to drive the fan, or the fan is to increase the speed, the control circuit 40 processes The controller controls to allow the input power to continue to be supplied to the fan motor 20, thereby enabling the fan to maintain the rotation speed and the output air volume to be stable and the energy to be effectively used.

Therefore, through the design of the flywheel energy storage fan 1 of the present invention, the energy saving and power saving and the energy can be effectively used, and the flywheel energy storage device 30 can be shared with the fan motor 20 of the fan.

Please refer to FIG. 4 for a perspective exploded view of the second embodiment of the present invention; FIG. 5 for a combined perspective view of the second embodiment of the present invention; FIG. 5A for a combined cross-sectional view of the second embodiment of the present invention; FIG. 5B is a schematic sectional view of an alternative embodiment of the second embodiment of the invention; FIG. 6 is a block diagram of the second embodiment of the invention. This embodiment mainly shares the flywheel energy storage device 30 of the first embodiment with the fan motor 20 of the fan, and redesigns that the flywheel energy storage device 30 and the fan do not share the fan motor 20, and this embodiment uses the aforementioned An embodiment can be used as a generator and a motor fan motor 20 is replaced by a motor as a fan motor 20 is used to drive the fan to run, as follows in this embodiment, the name of the fan motor 20 of the first embodiment described above The description will be called fan motor 20 instead. As shown in the figure, the flywheel energy storage fan 1 includes a base 10, a fan motor 20 and a flywheel energy storage device 30. The base 10 is provided with a shell portion 101 and a center pillar portion 105. Structure of seat 10 (including shell Part 101, the housing 1011, the bottom plate 1012, the vacuum chamber 103, the shaft seat 104 and the center column part 105) and the connection relationship and their functions are roughly the same as the structure of the base 10 (including the housing 101 and the housing 1011 of the first embodiment) , The bottom plate 1012, the vacuum chamber 103, the shaft seat 104 and the center column portion 105) and the connection relationship and their functions are the same, so they will not be repeated here.

In this embodiment, the fan motor 20 is shown as an electric motor for driving the fan (such as an axial fan). The fan motor 20 is provided with a fan stator 201 and a fan rotor 204 that can rotate relative to the fan stator 201. The fan rotor 204 is provided with a fan wheel 2041 having a hub 20412 and a plurality of blades 20411, a rotating shaft 2044, and a magnetic member 2043. The fan stator 201 has a silicon steel sheet group 2011 and a coil group wound on the silicon steel sheet group 2011 2012 and a circuit board 202, a control circuit 40 and other electronic components are provided on the circuit board 202, and the structure of the fan motor 20 of this embodiment (including the fan stator 201, silicon steel sheet group 2011, coil group 2012, circuit board 202, control circuit 40, other electronic components, fan rotor 204, fan wheel 2041 with a hub 20412 and a plurality of blades 20411, a rotating shaft 2044, and a magnetic member 2043), and the connection relationship and efficacy thereof with the fan motor 20 of the foregoing first embodiment Structure (including fan stator 201, silicon steel sheet group 2011, coil group 2012, circuit board 202, control circuit 40, other electronic components, fan rotor 204, fan wheel 2041 with hub 20412 and plural blades 20411, rotating shaft 2044 and magnetic 2043) and the connection relationship and the same effect, the difference between the two is that the circuit board 202 (such as the flexible printed circuit board 202 or the rigid printed circuit board 202) of this embodiment is the coil assembly 2012 of the fan motor 20 and the A motor 302 of the flywheel energy storage device 30 has a coil set 30232 electrically connected to each other.

The flywheel energy storage device 30 is provided with a flywheel rotating body 301 and a motor 302 as an electric motor and a generator. The flywheel rotating body 301 is provided on a rotating shaft 2044 in the vacuum chamber 103 and is corresponding to the motor 302 In addition, the motor 302 of the flywheel energy storage device 30 and the fan motor 20 are located on the same rotating shaft 2044, and the structure, shape, and material of the flywheel rotating body 301 of this embodiment are the same as those of the foregoing first embodiment. The structure, shape and material of the flywheel rotating body 301 are the same, and the flywheel rotating body 301 is used to be driven and rotated by the rotating shaft 2044 under the driving of the fan motor 20 (or at the same time with the motor 302), so that the flywheel The rotating body 301 is accelerated under high-speed rotation, and energy is stored as rotational kinetic energy (or mechanical energy), or the fan motor 20 decelerates the flywheel rotating body 301 to release energy to drive the motor 302 in the vacuum chamber 103 to rotate and While the speed is gradually reduced, the motor 302 is used as a generator to convert kinetic energy into electrical energy for the fan motor 20 to continue to use, so that the energy can be effectively used to increase the maximum benefit.

The motor 302 is provided with a motor stator 2023 and a motor rotor 3024 (or flywheel rotor). The motor stator 2023 is fixed on the shaft base 104 and is located in a groove 3011 of the flywheel rotating body 301. The motor rotor 3024 It is a magnetic body (such as a magnet or a permanent magnet). In this embodiment, the magnetic body is attached to the inner peripheral surface of the flywheel rotating body 301, and corresponds to the motor stator 2023. The motor stator 2023 is provided with a silicon steel sheet set 30231 and the coil group 30232 wound on the silicon steel sheet group 30231. In an alternative embodiment, referring to FIG. 5B, the motor 302 of the flywheel energy storage device 30 is disposed above the flywheel rotating body 301 in the vacuum chamber 103, and the magnetic body (ie, the motor rotor) is disposed on the The silicon steel sheet group 30231 on the rotating shaft 2044 of the motor stator 3023 on which the coil group 30232 is wound is fixed on the inner side of the casing 1011 adjacent to the central column portion 105 and extends a protrusion 10111.

When the fan (such as an axial fan) receives the input power (such as a DC power supply), the processor controls the fan motor 20 and the motor 302 to operate synchronously (or simultaneously), so that the rotating shaft 2044 is pushed and Drive the flywheel rotating body 301 in the vacuum chamber 103 to rotate, and use the flywheel rotating body 301 to rotate at high speed in the vacuum chamber 103 in a vacuum state, the fan operates without load, and then the flywheel rotating body 301 is The fan motor 20 and the motor 302 are synchronously driven by the motor to store kinetic energy in the flywheel rotating body 301. At this time, if the fan decelerates, the flywheel rotating body 301 also decelerates synchronously. The flywheel rotating body 301 At the same time, it will drive the motor 302 on the rotating shaft 2044 to become a generator. The motor (ie, motor 302) directly provides the generated electrical energy back to the control circuit 40 for use, so that the control circuit 40 can use the electrical energy provided (or generated) by the generator for any arithmetic processing or other control (such as fan increase) Speed running), so the energy storage density of the flywheel rotating body 301 through the flywheel energy storage device 30 is large, the energy conversion efficiency is high, the charge and discharge are fast and the life is long, so that the energy during the operation and deceleration of the fan can be effectively converted and used To effectively achieve better energy-saving and power-saving effects.

In the actual implementation of the present invention, when the fan is powered on, the control circuit 40 receives the electric energy generated by the motor 302 for the generator at the same time, the processor of the control circuit 40 automatically controls the input power and the generator (ie The electric power generated by the motor 302) can be provided (or alternately provided) to the fan motor 20 at the same time, or automatically shut down without receiving the input power, and only the electric power generated by the generator is provided to the fan motor 20 for use, such as the control When the processor (not shown) of the circuit 40 detects that the voltage of the input power source is unstable, the processor controls to allow the power of the generator and the input power source to be supplied to the fan motor 20 at the same time. When it is determined that the voltage of the input power source is stable, the power of the generator is controlled not to be supplied, thereby the fan can maintain the rotation speed and the output air volume is stable and the energy is effectively used, and the effect of energy saving and power saving. In addition, if the control circuit 40 detects that the electrical energy generated by the motor 302 for the generator is slightly low enough to continue driving the fan, or if the fan is to increase the speed, the processor of the control circuit 40 will automatically control the input to change to The power supply is actively provided to the fan motor 20 for use. In one embodiment, the user can design the processor to control the fan motor 20 and the motor 302 to run in synchronization with the motor according to the fan's air volume, heat dissipation and energy saving requirements, or control only a single fan motor 20 The motor 302 is powered on, and the motor 302 is powered off.

Therefore, through the design of the flywheel energy storage fan 1 of the present invention, the effects of energy saving, power saving and energy can be effectively achieved.

1: Flywheel energy storage fan

10: Dock

101: Shell

1011: Shell

1012: bottom plate

103: vacuum chamber

104: Shaft seat

1041: To accommodate holes

105: Center column

1051: boss

1052, 1053: first and second tanks

20: Fan motor

2011: Silicon steel sheet group

2012: coil group

202: circuit board

2041: Fan wheel

20411: Blade

20412: Wheel

20413: Containment hole

2043: Magnetic parts

2044: Rotating axis

30: Flywheel energy storage device

301: Flywheel rotating body

Claims (14)

A flywheel energy storage fan includes: a base provided with a shell portion and a center pillar portion, the center pillar portion is provided on the shell portion, the shell portion is provided with a vacuum chamber and a vacuum chamber provided in the vacuum chamber Shaft base; a fan motor as a motor and a generator, is provided with a fan stator and a fan rotor that can rotate relative to the fan stator, the fan stator is provided on the central column portion, the fan rotor has a fan wheel and A rotating shaft, one end of the rotating shaft is fixed on the fan wheel, the other end of the rotating shaft is pivotally provided with the center pillar portion and the shaft seat; and a flywheel energy storage device is provided with a flywheel rotating body, the The flywheel rotating body is provided on the rotating shaft in the vacuum chamber, and the flywheel rotating body is rotated by the fan motor driven by the motor, or the flywheel rotating body releases energy to drive the fan motor to rotate the generator. The flywheel energy storage fan as described in item 1 of the patent application scope, wherein the fan wheel is provided with a receiving hole, the receiving hole is used to receive a first rotor bearing, and the fan stator is fixed on the peripheral side of the center column part And a boss is provided in the center pillar part, the boss and a top end and a bottom end corresponding to the center pillar part respectively define a first accommodating groove and a second accommodating groove, the first and second accommodating grooves are used A second rotor bearing and a first bearing are respectively accommodated, and the first and second rotor bearings and the first bearing are pivotally arranged with the rotating shaft. The flywheel energy storage fan as described in item 2 of the patent application scope, wherein the shaft seat is provided with a receiving hole, the receiving hole is used to receive a second bearing, and the first bearing and the corresponding second bearing are located at the In the vacuum chamber of the shell, the second bearing is pivotally arranged with the rotating shaft. The flywheel energy storage fan as described in item 1 of the patent application scope, wherein the shell portion is provided with an outer shell and a bottom plate, the outer shell is covered on the bottom plate, and the center pillar portion is protrudingly provided on the corresponding shaft seat On an upper side of the outer shell, the outer shell, the bottom plate and the center pillar portion jointly define the vacuum chamber, and the shaft seat is disposed inside the bottom plate in the vacuum chamber. The flywheel energy storage fan as described in item 1 of the patent application scope, wherein the flywheel rotating body is composed of a metal material, a plastic material or a composite material. The flywheel energy storage fan as described in item 1 of the patent scope, wherein the fan wheel has a plurality of blades and a hub, the blade rings are provided on the outer peripheral side of the hub, the fan rotor is provided with a magnetic member, and the magnetic member is provided Inside the hub and facing the fan stator, the fan stator has a silicon steel sheet group, a coil group wound on the silicon steel sheet group, and a circuit board. A control circuit is provided on the circuit board. The coil assembly is electrically connected. A flywheel energy storage fan includes: a base provided with a shell portion and a center pillar portion, the center pillar portion is provided on the shell portion, the shell portion is provided with a vacuum chamber and a vacuum chamber provided in the vacuum chamber Shaft base; a fan motor, provided with a fan stator and a fan rotor that can rotate relative to the fan stator, the fan stator is provided on the central column portion, the fan rotor has a fan wheel and a rotating shaft, the rotating shaft One end of the shaft is fixed on the fan wheel, the other end of the rotating shaft is pivotally arranged with the center pillar part and the shaft seat; and a flywheel energy storage device is provided with a flywheel rotating body and a motor and generator For the motor, the flywheel rotating body is provided on the rotating shaft in the vacuum chamber, and the motor in the vacuum chamber is provided corresponding to the flywheel rotating body. The flywheel energy storage fan as described in item 7 of the patent application scope, wherein the fan wheel is provided with a receiving hole, the receiving hole is used to receive a first rotor bearing, and the fan stator is fixed on the peripheral side of the center column part , And a boss is provided in the center pillar part, and the bosses are respectively corresponding to a boss corresponding to the center pillar part The top end and the bottom end define a first accommodating groove and a second accommodating groove. The first and second accommodating grooves are respectively used for accommodating a second rotor bearing and a first bearing, and the first, second rotor bearings and the first A bearing is pivotally arranged with the rotating shaft. The flywheel energy storage fan as described in item 8 of the patent application scope, wherein the shaft seat is provided with a receiving hole, the receiving hole is used to receive a second bearing, and the first bearing and the corresponding second bearing are located at the In the vacuum chamber of the shell, the second bearing is pivotally arranged with the rotating shaft. The flywheel energy storage fan as described in item 7 of the patent application scope, wherein the shell portion is provided with a shell and a bottom plate, the shell is covered on the bottom plate, and the center pillar portion is protrudingly provided on the corresponding shaft seat On an upper side of the outer shell, the outer shell, the bottom plate and the center pillar portion jointly define the vacuum chamber, and the shaft seat is disposed inside the bottom plate in the vacuum chamber. The flywheel energy storage fan as described in item 7 of the patent application scope, wherein the motor is provided with a motor stator and a pair of motor rotors corresponding to the motor stator, the motor rotor is a magnetic body, and the magnetic body is provided on the flywheel rotating body The motor stator is fixed on the shaft seat and corresponds to the magnetic body. The motor stator is provided with a silicon steel sheet group and a coil group wound on the silicon steel sheet group. The flywheel energy storage fan as described in item 10 of the patent application scope, wherein the motor is provided with a motor stator and a pair of motor rotors corresponding to the motor stator. The motor rotor is provided with a magnetic system on the rotating shaft, and the motor stator is provided with There is a silicon steel sheet group and a coil group wound on the silicon steel sheet group, and the silicon steel sheet group is fixed on a protruding portion extending from the inner side of the casing adjacent to the center pillar portion. The flywheel energy storage fan as described in item 12 of the patent scope, wherein the fan wheel has a plurality of blades and a hub, the blade rings are provided on the outer peripheral side of the hub, the fan rotor is provided with a magnetic member, and the magnetic member is provided Inside the hub and facing the fan stator, the fan stator has a silicon steel sheet group, a coil group wound on the silicon steel sheet group and a circuit board, which is provided on the circuit board There is a control circuit, the circuit board is electrically connected to the coil group of the fan stator and the coil group of the motor stator. The flywheel energy storage fan as described in item 7 of the patent application scope, wherein the flywheel rotating body is composed of a metal material, a plastic material or a composite material.

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