TW201328107A - Energy saving fan having power generation and power feedback functions - Google Patents

Abstract

The present invention relates to an auxiliary power supplying and energy saving circuit for power generation and power feedback of a fan, which is provided with a power feedback controller at a power end. The power feedback controller is electrically connected to a fan. The internal of the fan is provided with a fan motor which is mechanically connected to a power generator via an elongated transmission shaft. The elongated transmission shaft is provided with fan blades. The internal of the power feedback controller is configured with a power switch, a microprocessor, and a transformer rectifier circuit. The power switch and the transformer rectifier circuit are electrically connected to the power end, the fan motor, and the power generator respectively. The power feedback controller allows the fan motor to utilize electricity supplied by the power source (power supply) via the power switch, and the power feedback controller simultaneously converts kinetic energy of the fan motor, the elongated transmission shaft and the power generator into electricity feedback (power feedback). The fan motor also can use electricity provided by the feedback power (feedback power supply) via the power switch. By detecting the voltage strength (feedback power strength) of the power generator after being rectified by the transformer rectifier circuit, the microprocessor can timely and automatically adjust the switch timing of the power switch so as to allow the fan motor to alternatively utilize electricity supplied by the power source or the feedback power (alternative power supply). Thereby, by the arrangement of the power generator and the power feedback controller, the power end can provide electricity to the fan in an effective and energy saving manner.

Description

Energy-saving and energy-saving fan with power generation and feedback power supply

The invention relates to a circuit for "energy-saving and power-saving fan with power generation and feedback power supply function", in particular to a kinetic energy conversion electric power feedback and a power feedback controller using a fan motor and a power generator to assist supply The power of a fan enables a power supply terminal to supply power to the energy-saving fan circuit used by the fan with power saving and efficient power.

According to the current era of oil shortages and high oil prices, the cost of using petroleum-related energy has increased substantially. At the same time, in order to avoid the drastic changes in the environment caused by excessive carbon dioxide emissions from the use of oil, all parties have advocated energy conservation. Carbon-related practices, in which efficient use of various power sources for various types of fans, is a specific practice of energy saving and carbon reduction.

The method of using the power supply for the fan is as shown in FIG. 1 , which uses a power terminal to directly supply electric energy to a fan motor, and the fan motor is mechanically connected to the fan blade via a transmission shaft, so that the fan motor can be The electric energy is converted into kinetic energy to drive the fan blade to operate and work; the working mode of the fan motor is continuous operation, and the power source is also continuously supplying electric energy. However, except for a few fans for special purposes, the fan motor must be operated continuously. Most of the fans are for general use (eg, ventilation, de-heating, etc.), and continuous operation of the fan motor will cause continuous waste of power supply to the power supply ( The power consumption efficiency is reduced), or the continuous loss of the fan motor related components is caused, and the use of the fan working function is not normal for a long time.

In view of the shortcomings derived from the above prior art, the creator of the case was improved and innovated by Sui Si, and after years of painstaking research, he finally succeeded in research and development of a "energy-saving and energy-saving fan with power generation and feedback power supply" circuit. .

The purpose of the invention is to provide a fan power generation feedback power auxiliary power supply and energy saving circuit, as shown in FIG. 2, the concept is to convert electric energy feedback by kinetic energy of a fan motor and a power generator. And a power feedback controller to assist the supply of a fan, so that a power terminal can supply power to the fan with energy saving, efficient power.

In order to achieve the above purpose, the technical means of the creation is to provide a power feedback controller at a power supply end (for example, single-phase AC mains, three-phase AC mains or DC power), and the power feedback controller is coupled with a fan ( That is: single-phase AC fan, three-phase AC fan or DC fan) electrical connection. The fan is internally provided with a fan motor (single-phase motor, three-phase motor or DC motor) via a long drive shaft and a power generator (single-phase generator, three-phase generator or alternator) The power transmission feedback controller is provided with a power switch, a microprocessor and a transformer rectifier circuit, and the power switch and the transformer rectifier circuit respectively The power terminal, the fan motor and the power generator are electrically connected. Thereby, the power feedback controller enables the fan motor to use the power supplied by the power supply (power supply) via the power switch, and the power feedback controller uses the fan motor, the extended drive shaft and the power The kinetic energy of the generator converts the electrical energy feedback (power generation feedback), and the power supply switch can also use the power supply of the feedback power supply (feedback power supply). Moreover, the microprocessor can detect the switching timing of the power switch by timely and automatically adjusting the voltage of the power generator after being rectified by the transformer rectifier circuit (the power of the feedback power), so that the fan motor can be The power source or the power supplied by the power supply is alternately used (alternating power supply). In this way, through the setting and operation of the power generator and the power feedback controller, the power terminal can supply power to the fan with energy-saving, energy-saving and efficient power.

Please refer to the following detailed description of the preferred embodiment of the invention (single-phase AC fan) and the accompanying drawings, which will further understand the technical content of the creation and its purpose and effect:

The circuit of the "energy-saving and power-saving fan with power generation and feedback power supply function" provided by the invention is shown in Figures 3 and 4, which is provided with a single-phase AC fan 11 at a single-phase AC mains power supply end. The single-phase AC fan 11 and the single-phase AC mains power supply end are provided with a power feedback controller 12. The single-phase AC fan 11 is internally provided with a single-phase motor 111 mechanically coupled to a single-phase generator 114 via an elongated drive shaft 112 (with fan blades 113), and the power feedback controller 12 The internal power supply switch 121, a microprocessor 122 and a single-phase transformer rectifier circuit 123 are provided. The power switch 111 and the single-phase transformer rectifier circuit 123 are respectively connected to the single-phase AC power supply terminal. The single phase motor 111 and the single phase generator 114 are electrically connected. The power feedback controller 12 enables the single-phase motor 111 to use the power supplied by the single-phase AC mains power supply (mains power supply) via the power switch 111, and the power feedback controller 12 uses the single-phase motor 111. The kinetic energy of the extended transmission shaft 112 and the single-phase generator 114 converts electrical energy feedback (single-phase AC power generation feedback), and the single-phase AC 111 can also use the single-phase AC feedback power via the power switching switch 121. Supply of electrical energy (return power supply). The microprocessor 122 can timely and automatically adjust the power switch 121 by detecting the voltage strength (single-phase AC feedback power) rectified by the single-phase generator 114 via the single-phase transformer rectifier circuit 123. At the switching timing, when the rectified voltage is detected to be lower than a set voltage value of the microprocessor 122, the power feedback controller 12 controls the power switch 121 to be closed (ON, closed circuit) Initiating a mains power supply circuit to be turned on, so that the single-phase motor 111 can use the power supplied by the single-phase AC mains power supply; or, when detecting that the rectified voltage is higher than the set voltage value, the power feedback control The device 12 controls the power switch 121 to be closed (ON, closed circuit 2) to start another feedback power supply circuit to be turned on, so that the single-phase motor 111 can also use the single-phase AC feedback power supply power. The single phase AC mains power is also rectified via the single phase transformer rectifier circuit 123 to provide the power required for operation of the microprocessor 122. In this way, the single-phase generator 111 and the power feedback controller 12 are disposed and operated to enable the single-phase motor 111 to alternately use the single-phase AC mains power or the single-phase AC feedback power supply (alternating power supply). ), the single-phase AC mains power terminal can be powered by the single-phase AC fan 11 with energy saving, efficient power.

Referring to FIGS. 4 and 5, the power switch 121 is composed of a mains power switch 1211, a feedback power switch 1212, and an inverter circuit 1213. When the microprocessor 122 detects that the voltage of the single-phase generator 114 rectified by the single-phase transformer rectifier circuit 123 is lower than a set voltage value of the microprocessor 122, the microprocessor 122 That is, the mains power switch 1211 is controlled to be closed (ON, closed circuit 1) as a conduction, so that the single-phase motor 111 can use the power supplied by the single-phase AC mains power supply, and at the same time, the microprocessor 122 passes the inverter circuit 1213. That is, the feedback power switch 1212 is operated as an open circuit (OFF) to cut off the conduction, so that the single-phase motor 111 stops using the power of the single-phase AC feedback power supply; or when the microprocessor 122 detects the single phase When the voltage of the generator 114 rectified by the single-phase transformer rectifier circuit 123 is higher than the set voltage value, the microprocessor 122 controls the utility power switch 1211 to be open (OFF) as the cut-off conduction. The single-phase motor 111 stops using the power of the single-phase AC mains power supply, and the microprocessor 122 controls the feedback power switch 1212 to be closed (ON, closed circuit 2) via the inverter circuit 1213 to be turned on. Simplex Up to 111 may also be used to feed electricity to the electrical energy supply of the single-phase AC. The microprocessor 122 can detect the voltage strength (single-phase AC feedback power) rectified by the single-phase generator 114 via the single-phase transformer rectifier circuit 123, and timely adjust and automatically adjust the utility power switch 1211 and the The feedback power switch 1212 is closed or open, so that the single-phase motor 111 can alternately use the power supplied by the single-phase AC mains power supply (mains power supply), or use the single-phase AC feedback power supply ( Reward power supply).

Referring to FIGS. 4 and 6, the single-phase transformer rectifier circuit 123 is composed of a commercial power single-phase transformer rectifier circuit 1231 and a feedback power single-phase transformer rectifier circuit 1232. Wherein, the single-phase AC mains power supply is supplied with the voltage (DC voltage) rectified by the mains voltage single-phase transformer rectifier circuit 1231, and the power supply required for the operation of the microprocessor 122 is provided, and the single-phase motor 111, The extended transmission shaft 112 and the kinetic energy of the single-phase generator 114 convert electrical energy feedback (single-phase AC power generation feedback), and the voltage (DC voltage) rectified by the feedback single-phase transformer rectifier circuit 1232 is supplied. The microprocessor 122 is used as a reference voltage for detecting the strength of the single-phase AC feedback power, and is compared with a set voltage value of the microprocessor 122 to enable the microprocessor 122 to timely and automatically adjust the power supply. The switching timing of the changeover switch 121.

In this manner, when the single-phase generator 114 and the power feedback controller 12 are disposed and utilized, when the single-phase AC feedback power of the single-phase generator 114 is detected to be weak, the power feedback controller 12 passes the The power switching switch 121 enables the single-phase motor 111 to use the power supplied by the single-phase AC mains power supply (mains power supply), or when the single-phase AC feedback power of the single-phase generator 114 is detected to be strong, The power feedback controller 12 enables the single-phase motor 111 to use the power of the single-phase AC feedback power supply (feedback power supply) via the power switch 111, and the single-phase motor 111 can alternately use the single-phase AC The mains power supply or the single-phase AC feedback power (alternating power supply) enables the single-phase AC mains power supply end to supply energy to the single-phase AC fan 11 with energy-saving, energy-saving and efficient power, so that the single-phase AC is not generated. The continuous waste of the power supply of the mains power supply or the continuous loss of the related components of the single-phase motor 111 causes the malfunction of the single-phase AC fan 11 to be abnormal.

The detailed description above is a detailed description of one of the possible embodiments of the present invention, and is not intended to limit the scope of the present invention, and the equivalent implementation or modification is not departing from the spirit of the invention. For example, equivalent embodiments of variations, etc., should be included in the scope of the patent in this case.

The following table shows the main component symbols and names of a preferred embodiment (single-phase AC fan) of the present invention:

11. . . Single phase AC fan

111. . . Single phase motor

112. . . Extended drive shaft

113. . . Fan blades

114. . . Single phase generator

12. . . Power feedback controller

121. . . Power switch

1211. . . Mains power supply

1212. . . Reward power development

1213. . . Inverting circuit

122. . . microprocessor

123. . . Single-phase transformer rectifier circuit

1231. . . Mains power single-phase transformer rectifier circuit

1232. . . Feedback single-phase transformer rectifier circuit

Figure 1 is a system block diagram of a conventional fan.

Figure 2 is a block diagram and connection diagram of the system structure of the inventive concept.

Figure 3 is a block diagram and a connection diagram of a system structure of a preferred embodiment (single-phase AC fan) of the present invention.

Figure 4 is a block diagram and a connection diagram of the internal structure of the power feedback controller of a preferred embodiment (single-phase AC fan) of the present invention.

FIG. 5 is a block diagram and a connection diagram of the internal structure of a power switch of a preferred embodiment (single-phase AC fan) according to the present invention.

Figure 6 is a block diagram and a connection diagram of the internal structure of a single-phase transformer-rectification circuit of a preferred embodiment (single-phase AC fan) according to the present invention.

01. . . fan

011. . . Fan motor

012. . . Extended drive shaft

013. . . Fan blades

014. . . Power generator

02. . . Power feedback controller

Claims (9)

A circuit for "energy-saving and power-saving fan with power generation and feedback power supply function", comprising: a single-phase AC fan: disposed on a single-phase AC mains power supply end, which is a general-purpose fan; a power feedback controller: located in the single On the alternating current power supply end, the input end is directly electrically connected with the single-phase AC mains power supply end, and the output end thereof is electrically connected with the single-phase AC fan, and the electric power feedback controller is the feedback power of the single-phase AC fan. Auxiliary power supply and energy-saving equipment; a single-phase motor: disposed in the single-phase AC fan, which is mechanically coupled to the fan blade of the single-phase AC fan via an elongated drive shaft to drive the fan blade to operate and operate; a single-phase generator is disposed in the single-phase AC fan, and is mechanically connected to the single-phase motor via the extended drive shaft, and the power feedback controller is also used for auxiliary power supply and energy saving of the single-phase AC fan Power-saving device; a power switch: disposed in the power feedback controller, located between the single-phase AC mains power terminal and the single-phase motor, respectively a single-phase AC mains power terminal, the single-phase motor and the single-phase generator are electrically connected; a microprocessor: disposed in the power feedback controller, located between the single-phase AC mains power terminal and the single-phase motor The electric switch is electrically connected to the power switch; the single-phase transformer rectifier circuit is disposed in the power feedback controller, and is located between the single-phase AC mains power terminal and the single-phase motor, and the input ends thereof are respectively The single-phase AC mains power terminal and the single-phase generator are electrically connected, and the output end thereof is electrically connected to the microprocessor; the power feedback controller enables the single-phase AC to use the single-phase AC mains via the power switch The power supply power (single-phase AC mains power supply), and the power feedback controller converts the electric energy feedback by the single-phase motor, the extended transmission shaft and the kinetic energy of the single-phase generator (single-phase AC power generation feedback) The power switch can also be used to enable the single-phase motor to use the single-phase AC feedback power supply (single-phase AC feedback power supply); wherein the microprocessor detects The voltage of the single-phase generator rectified by the single-phase transformer rectifier circuit (the strength of the single-phase AC feedback power) can timely and automatically adjust the switching timing of the power switch, and when the rectified voltage is detected, the voltage is lower than When a voltage value is set in the microprocessor, the power feedback controller controls the power switch to be closed (ON, closed circuit) to activate a mains power supply circuit to enable the single phase motor to use the single phase. The power of the mains power supply is exchanged, or when the rectified voltage is detected to be higher than the set voltage value, the power feedback controller controls the power switch to be closed (ON, closed circuit 2) to start another The power supply circuit is turned on, so that the single-phase motor can also use the power supplied by the single-phase AC feedback power; the single-phase AC mains power is also rectified by the single-phase transformer rectifier circuit to provide the microprocessor for operation The power of the power supply; thus, the single-phase AC and the power feedback controller are arranged and operated to enable the single-phase motor to alternately use the single-phase AC mains Or the single-phase AC power supply of the power feedback (alternating power supply), to enabling the single-phase AC mains power supply terminal capable of energy saving, the electric power efficiency, the single-phase AC power supply to the fan used. For example, in the "energy-saving and power-saving fan with power generation and feedback power supply function" as described in the first paragraph of the patent application, the power switching relationship is composed of a mains power switch, a feedback power switch and an inverter circuit, wherein When the microprocessor detects that the voltage of the single-phase generator rectified by the single-phase transformer rectifier circuit is lower than a set voltage value of the microprocessor, the microprocessor controls the power switch to The closed circuit (ON, closed circuit 1) is used as a conduction, so that the single-phase motor can use the power supplied by the single-phase AC mains power supply, and at the same time, the microprocessor controls the feedback power switch to be open (OFF) via the inverter circuit. As a cut-off conduction, the single-phase motor stops using the power of the single-phase AC feedback power supply, or when the microprocessor detects the voltage of the single-phase generator rectified by the single-phase transformer rectifier circuit When the voltage is higher than the set voltage value, the microprocessor controls the mains power switch to be open (OFF) as the cut-off conduction, so that the single-phase motor stops using the single-phase AC mains power supply. At the same time, the microprocessor controls the feedback power switch to be closed (ON, closed circuit 2) as a conduction via the inverter circuit, so that the single-phase motor can also use the single-phase AC feedback power supply power; The microprocessor can detect the voltage strength of the single-phase generator after being rectified by the single-phase transformer rectifier circuit (the strength of the single-phase AC feedback power), and timely adjust and automatically adjust the mains power switch and the feedback power switch to be closed circuit. Or the timing of the open circuit, so that the single-phase motor can alternately use the power of the single-phase AC mains power supply (single-phase AC mains power supply), or use the single-phase AC feedback power supply (single-phase AC feedback) Power supply). For example, in the "energy-saving and power-saving fan with power generation and feedback power supply function" as described in the first paragraph of the patent application, the single-phase transformer-voltage rectifier circuit is a single-phase transformer-rectifier circuit and a single-feedback single-phase transformer. a voltage rectifying circuit, wherein the single-phase AC mains power supply is rectified by the mains power single-phase transformer rectification circuit (DC voltage), and the power supply required for the operation of the microprocessor is provided, and the single phase a motor, the extended transmission shaft and the kinetic energy of the single-phase generator are converted into electrical energy feedback (single-phase AC power generation feedback), and the voltage (DC voltage) rectified by the feedback single-phase voltage transformation rectifier circuit is supplied to the motor The microprocessor is used as a reference voltage for detecting the strength of the single-phase AC feedback power, and is compared with a set voltage value inside the microprocessor, so that the microprocessor can timely and automatically adjust the switching timing of the power switch. . If the circuit of the "energy-saving and power-saving fan with power generation and feedback power supply function" mentioned in the first paragraph of the patent application is a three-phase AC mains power supply terminal, a three-phase AC fan can be provided on the three-phase AC mains power supply end. A power feedback controller may be disposed between the three-phase AC fan; the three-phase AC fan is internally provided with a three-phase motor, and the three-phase motor is coupled to a three-phase transmission via an elongated drive shaft (with fan blades) The motor is mechanically connected, and the power feedback controller can be internally provided with a power switch, a microprocessor and a three-phase transformer rectifier circuit, and the power switch and the three-phase transformer rectifier circuit respectively The mains power supply end, the three-phase motor and the three-phase generator are electrically connected; the electric power feedback controller enables the three-phase motor to use the electric energy supplied by the three-phase alternating current mains power supply (three-phase alternating current mains power supply) At the same time, the power feedback controller converts the electric energy and power feedback (three-phase alternating current power generation feedback) by the three-phase motor, the extended transmission shaft and the kinetic energy of the three-phase generator, and The power switching switch enables the three-phase motor to use the three-phase alternating current feedback power supply power (three-phase alternating current feedback power supply); wherein the microprocessor detects the three-phase generator via the three-phase The voltage strength after rectification of the voltage rectifier circuit (three-phase AC feedback power) can also timely and automatically adjust the switching timing of the power switch. When the rectification is detected, one of the voltages is lower than the internal one of the microprocessor. When the voltage value is set, the power feedback controller can control the power switch to be closed (ON, closed circuit 1) to start a mains power supply circuit to be turned on, so that the three-phase motor can use the power supplied by the three-phase AC mains power supply, Alternatively, when detecting that the rectified voltage is higher than the set voltage value, the power feedback controller can control the power switch to be closed (ON, closed circuit 2) to start another feedback power supply circuit to be turned on. The three-phase motor can also use the three-phase alternating current feedback power supply power; the three-phase alternating current mains power source is also rectified via the three-phase transformer rectifier circuit to provide the micro-location The power supply energy required for the operation of the machine; thus, the three-phase motor and the three-phase AC power supply or the three-phase AC feedback power can be alternately used by the three-phase generator and the power feedback controller. The power supplied (alternating power supply) enables the three-phase AC mains power supply to be powered by the three-phase AC fan with energy-saving, energy-efficient and efficient power. For example, the circuit of “energy-saving and power-saving fan with power generation and feedback power supply” mentioned in the fourth paragraph of the patent application is a three-phase AC mains power supply and a three-phase AC fan, and the three-phase generator and the power feedback The setting and operation of the controller, wherein the power switch is also composed of a mains power switch, a feedback power switch and an inverter circuit, when the microprocessor detects the three-phase generator via the three When one voltage of the phase-change voltage rectifying circuit is lower than a set voltage value inside the microprocessor, the microprocessor can control the mains power switch to be closed (ON, closed circuit) as a conduction, so that the three-phase horse The power supply of the three-phase AC mains power supply is used, and the microprocessor can control the feedback power switch to be open (OFF) via the inverter circuit as a cut-off conduction, so that the three-phase motor stops using the three The alternating current feeds back the power of the power supply, or when the microprocessor detects that the voltage of the three-phase generator is rectified by the three-phase transformer rectifier circuit is higher than the set voltage value, the micro The processor can control the utility power switch to be open (OFF) as a cut-off conduction, so that the three-phase motor stops using the power of the three-phase AC mains power supply, and the microprocessor can control the current through the inverter circuit. The feedback power switch is closed (ON, closed circuit 2) for conducting, so that the three-phase motor can also use the three-phase alternating current to feed the power of the electric power; the microprocessor can also detect the three-phase generator through the The voltage strength after rectification of the three-phase transformer rectifier circuit (three-phase AC feedback power), timely and automatically adjust the timing of the mains power switch and the feedback power switch to be closed or open, so that the three-phase motor can also alternately The electric energy supplied by the three-phase AC mains power supply (three-phase AC mains power supply), or the three-phase AC feedback electric power supply (three-phase AC feedback power supply). For example, the circuit of “energy-saving and power-saving fan with power generation and feedback power supply” mentioned in the fourth paragraph of the patent application is a three-phase AC mains power supply and a three-phase AC fan, and the three-phase generator and the power feedback The setting and operation of the controller, wherein the three-phase transformer rectifier circuit is composed of a three-phase transformer rectifier circuit and a three-phase transformer rectifier circuit, and the three-phase AC power source is powered by the utility The voltage (DC voltage) after rectification of the three-phase transformer rectifier circuit of the power supply is used for power supply energy required for the operation of the microprocessor, and the kinetic energy conversion of the three-phase motor, the extended transmission shaft and the three-phase generator Power electric power feedback (three-phase alternating current power generation feedback), another voltage (DC voltage) rectified by the power feedback three-phase transformer rectifier circuit is supplied to the microprocessor as detecting the strength of the three-phase AC feedback power The reference voltage is compared with a set voltage value inside the microprocessor, so that the microprocessor can also adjust the switching timing of the power switch in a timely manner and automatically. For the circuit of the "energy-saving and power-saving fan with power generation and feedback power supply" as described in the first paragraph of the patent application, if it is a DC power supply terminal, a DC fan can be provided, and a DC fan can be provided between the DC power supply terminal and the DC fan. a power feedback controller; the DC fan is internally provided with a DC motor, and the DC motor is mechanically connected to an AC generator via an elongated drive shaft (with a fan blade), and a power supply can be provided inside the power feedback controller a switching switch, a microprocessor, and a transformer rectifier circuit, wherein the power switching switch and the transformer rectifier circuit are electrically connected to the DC power terminal, the DC motor, and the alternator; respectively, the power feedback controller The power switch enables the DC motor to use the power supplied by the DC power source (DC power supply), and the power feedback controller converts the power and power feedback by the DC motor, the extended drive shaft and the kinetic energy of the alternator (AC power generation feedback), and the power supply switching switch can also be used to enable the DC motor to use the AC feedback power to be rectified and supplied Capable of (AC feedback power supply); wherein the microprocessor (directly supplying power from the DC power source) detects the voltage strength (AC feedback power strength) after the AC generator is rectified by the transformer rectifier circuit, The switching timing of the power switch can also be adjusted in time and automatically. When the voltage after the rectification is detected to be lower than a set voltage value inside the microprocessor, the power feedback controller can control the power switch to be closed. (ON, closed circuit 1) to start the current source power supply circuit to enable the DC motor to use the power supplied by the DC power source, or when the voltage after the rectification is detected to be higher than the set voltage value, the power The feedback controller can control the power switch to be closed (ON, closed circuit 2) to start another feedback power supply circuit to be turned on, so that the DC motor can also use the AC feedback power to rectify the supplied power; thus, through the communication The setting and operation of the generator and the power feedback controller enable the DC motor to alternately use the DC power source or the AC feedback power to be rectified The electric power supply (alternating power supply), to make the DC power terminal can also in energy saving, energy efficiency of the power supply to the DC fan used. For example, the "energy-saving and energy-saving fan with power generation and feedback power supply" circuit mentioned in the seventh paragraph of the patent application is a DC power supply terminal and a DC fan, and the alternator and the power feedback controller are provided and used. The power switching relationship is formed by a DC power switch, a feedback power switch, and an inverter circuit. When the microprocessor detects that the AC generator is rectified by the transformer rectifier circuit, the voltage is low. When a voltage value is set in the microprocessor, the microprocessor can control the DC power switch to be closed (ON, closed circuit) as a conduction, so that the DC motor can use the power supplied by the DC power source, and The microprocessor can control the feedback power switch to be open (OFF) via the inverter circuit as a cut-off conduction, so that the DC motor stops using the rectified and supplied power of the AC feedback power, or when the microprocessor After detecting that the voltage of the alternator rectified by the transformer rectifier circuit is higher than the set voltage value, the microprocessor can control the DC power switch to be an open circuit (OFF) is used as the cut-off conduction, so that the DC motor stops using the power supplied by the DC power source, and the microprocessor can control the feedback power switch to be closed (ON, closed circuit 2) as the conduction through the inverter circuit. The DC motor can also use the rectified power supplied by the AC feedback power; the microprocessor can also detect the voltage strength of the AC generator after being rectified by the transformer rectifier circuit (AC feedback power strength) And timely adjusting and automatically adjusting the DC power switch and the feedback power switch to be closed or open, so that the DC motor can also alternately use the power of the DC power supply (DC power supply), or use the AC feedback power The electric energy supplied after rectification (AC feedback power supply). For example, the "energy-saving and energy-saving fan with power generation and feedback power supply" circuit mentioned in the seventh paragraph of the patent application is a DC power supply terminal and a DC fan, and the alternator and the power feedback controller are provided and used. And the DC motor, the extended transmission shaft and the kinetic energy of the alternator convert electrical energy feedback (AC power generation feedback), and the voltage (DC voltage) rectified by the transformer rectifier circuit can be controlled by the power switch Supplying to the DC motor, the DC motor can use the rectified electric energy of the AC feedback power, and the power is fed back to another voltage (DC voltage) rectified by the transformer rectifier circuit, and then supplied to the DC processing The machine serves as a reference voltage for detecting the strength of the AC feedback power, and compares with a set voltage value inside the microprocessor, so that the microprocessor can also adjust the switching timing of the power switch in a timely manner and automatically.