CN216950941U

CN216950941U - External hanging type fan intelligent speed regulating device

Info

Publication number: CN216950941U
Application number: CN202220089849.0U
Authority: CN
Inventors: 林政宽
Original assignee: Shenzhen Tengyun Chip Technology Co ltd
Current assignee: Shenzhen Tengyun Chip Technology Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-07-12
Anticipated expiration: 2032-01-13

Abstract

The utility model discloses an external-hanging type fan intelligent speed regulating device which comprises a shell, a mains supply input end, a voltage regulating output interface, input equipment, a voltage conversion component and a control component, wherein the mains supply input end is arranged in the shell, an opening is formed in the position, corresponding to the mains supply input end, of the shell, the voltage regulating output interface is arranged in the shell, an opening is formed in the position, corresponding to the voltage regulating output interface, of the shell, the input end of the voltage conversion component is connected with the mains supply input end, the output end of the voltage conversion component is connected with the voltage regulating output interface, and the control component is electrically connected with the input equipment and the voltage conversion component respectively. The utility model improves the convenience of using the fan for users.

Description

External hanging type fan intelligent speed regulating device

Technical Field

The utility model relates to the field of fan speed regulation, in particular to an external-hanging type intelligent fan speed regulation device.

Background

In the existing household fan market and families, the traditional mechanical switch type fans are still relatively common, but most of the mechanical switch type fans only have three-gear wind speed, and each gear corresponds to one voltage output to an alternating current motor inside the fan, for example, three voltage gears of AC220V/AC180V/AC120V, which cannot meet the requirements of users for intelligent speed regulation of the fan and intelligent work of the fan at present. If a brand new direct current brushless intelligent fan is purchased to replace the still available traditional mechanical switch type fan, not only the purchase cost is higher, but also waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an externally-hung intelligent speed regulating device for a fan, aiming at improving the convenience of using the fan by a user.

In order to achieve the above object, the present invention provides an external hanging type intelligent speed adjusting device for a fan, comprising:

a housing;

the mains supply input end is arranged in the shell, an opening is formed in the position, corresponding to the mains supply input end, of the shell, and the mains supply input end is used for being connected with mains supply voltage;

the pressure regulating output interface is arranged in the shell, an opening is formed in the position, corresponding to the pressure regulating output interface, of the shell, and the pressure regulating output interface is used for being connected with a fan;

the input device is used for outputting a corresponding fan voltage regulating signal when being triggered by a user;

the input end of the voltage conversion component is connected with the mains supply input end, the output end of the voltage conversion component is connected with the voltage regulation output interface, and the controlled end of the voltage conversion component is electrically connected with the control component;

the control assembly, the control assembly respectively with input device the controlled end electric connection of voltage conversion subassembly, the control assembly be used for the basis fan pressure regulating signal, control voltage conversion subassembly carry out voltage conversion with mains voltage after the output with the alternating current warp of the corresponding voltage value of fan pressure regulating signal the pressure regulating output interface extremely the fan, in order to drive fan work.

Optionally, the control assembly includes a main control chip, and the voltage conversion assembly includes a zero-crossing detection circuit, a driving chip, a rectification circuit, and an H-bridge circuit;

the main control chip is respectively and electrically connected with the output end of the zero-crossing detection circuit, the controlled end of the driving chip and the output end of the input device;

the input end of the zero-crossing detection circuit is electrically connected with the output end of the rectification circuit;

the utility power input end, the rectification circuit, the H-bridge circuit and the voltage regulation output interface are electrically connected in sequence, and the output end of the driving chip is connected with the controlled end of the H-bridge circuit.

Optionally, the main control chip and the driving chip are integrated in the same integrated chip.

Optionally, the externally-hung intelligent speed regulation device for the fan further comprises:

the current detection assembly is arranged in the shell and is connected in series between the voltage conversion assembly and the voltage regulation output interface, and the output end of the current detection assembly is electrically connected with the control assembly; the current detection assembly is used for detecting the alternating current value output by the voltage conversion assembly and outputting a corresponding current detection signal;

the voltage detection assembly is arranged in the shell, a detection end of the voltage detection assembly is connected with an output end of the voltage conversion assembly, and an output end of the voltage detection assembly is electrically connected with the control assembly; the voltage detection assembly is used for detecting the alternating voltage value output by the voltage conversion assembly and outputting a corresponding voltage detection signal;

the first temperature detection assembly is arranged in the shell and is electrically connected with the control assembly; the first temperature detection assembly is used for detecting the working temperature of the voltage conversion assembly and outputting a corresponding temperature detection signal;

the control assembly is used for controlling the voltage conversion assembly to stop working when the alternating current value output by the voltage conversion assembly is determined to be larger than a preset alarm current value according to the current detection signal and/or when the alternating current value output by the voltage conversion assembly is determined to be larger than a preset alarm voltage value according to the voltage detection signal and/or when the working temperature of the voltage conversion assembly reaches a preset alarm temperature according to the temperature detection signal.

Optionally, the outer hanging fan intelligent speed adjusting device still includes:

a plurality of louvres, a plurality of the louvres set up in on the casing.

a power supply terminal;

the heat dissipation fan is arranged in the shell, and a heat dissipation opening is formed in the shell corresponding to the position of the heat dissipation fan;

the input end of the switch circuit is connected with a power supply end, the output end of the switch circuit is connected with the power supply end of the cooling fan, and the controlled end of the switch circuit is electrically connected with the control assembly;

and the control assembly is used for controlling the switching circuit to conduct a path between the power supply end and the power supply end of the cooling fan when the alternating current power value output by the voltage conversion assembly is determined to reach a preset active cooling power value according to the current detection signal and the voltage detection signal, so that the cooling fan rotates.

the image sensing assembly is arranged in the shell, and the shell is provided with a shooting opening relative to the image sensing assembly; the image sensing assembly is electrically connected with the control assembly;

the image sensing component is used for shooting a user image and outputting a sleep adjustment signal when the user is determined to be in a sleep state according to the shot user image;

and the control component is used for controlling the voltage conversion component to convert the voltage of the mains supply voltage and then output an alternating voltage with a preset sleep voltage value to the fan so as to drive the fan to work when the sleep adjustment signal is received.

the wireless communication assembly is arranged in the shell, is electrically connected with the control assembly and is used for being in communication connection with an external terminal;

the wireless communication component is used for accessing a wireless fan voltage regulating signal sent by the external terminal;

the control assembly is used for controlling the voltage conversion assembly to convert the voltage of the mains supply into the alternating current of the corresponding voltage value of the wireless fan voltage regulation signal, and then the alternating current is output to the fan through the voltage regulation output interface to drive the fan to work.

the display assembly is electrically connected with the control assembly;

and the control component is used for controlling the display component to display the voltage value corresponding to the fan voltage regulating signal or the voltage value corresponding to the wireless fan voltage regulating signal according to the fan voltage regulating signal or the wireless fan voltage regulating signal.

the timing assembly is arranged in the shell, is electrically connected with the control assembly and is used for starting timing when triggered and outputting a corresponding timing signal according to timing duration to output a corresponding timing signal;

the input device is also used for outputting a timing signal when triggered;

the wireless communication component is also used for accessing a wireless timing signal sent by the external terminal;

the control component is further used for determining a timing duration when the timing signal/the wireless timing signal is received, controlling the timing component to start, and controlling the voltage conversion component to stop working when the timing duration is determined to reach the timing duration according to the timing signal transmitted by the timing component.

the shell is provided with a temperature opening, the second temperature detection assembly extends out of the shell through the temperature opening, and the second temperature detection assembly is electrically connected with the control assembly;

the second temperature detection assembly is used for detecting the ambient temperature and outputting a corresponding ambient temperature detection signal;

the input device is also used for outputting an intelligent mode signal when a user triggers;

the wireless communication component is also used for accessing a wireless intelligent mode signal sent by the external terminal;

and the control component is used for determining the ambient temperature according to the ambient temperature detection signal when receiving the intelligent mode signal or the wireless intelligent mode signal, and controlling the voltage conversion component to convert the voltage of the mains supply voltage and then output alternating voltage with a voltage value corresponding to the ambient temperature to the fan so as to drive the fan to work.

The utility model comprises a shell, a mains supply input end, a voltage regulation output interface, input equipment, a voltage conversion assembly and a control assembly. The commercial power input end is used for connecting commercial power voltage; the voltage-regulating output interface is used for connecting a fan; the input equipment is used for outputting a corresponding fan voltage regulating signal control component when triggered by a user, and the control voltage conversion component is used for outputting alternating current with a voltage value corresponding to the fan voltage regulating signal to the fan through the voltage regulating output interface after voltage conversion is carried out on mains supply voltage according to the fan voltage regulating signal so as to drive the fan to work. Therefore, in practical application, a user only needs to adjust the fan to the highest gear, namely the original AC220V gear, and then sets or adjusts the required voltage through the input device, so that the voltage output to the power supply end of the fan by the external-hanging type fan intelligent speed regulation device can be correspondingly changed, and further the voltage output to the internal alternating current motor of the fan is changed, thereby realizing the intelligent speed regulation of the fan and improving the convenience of the user in using the fan.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic block diagram of an embodiment of an externally-mounted fan intelligent speed regulation device according to the present invention;

FIG. 2 is a schematic block diagram of another embodiment of the externally-mounted intelligent speed-regulating device for fan according to the present invention;

FIG. 3 is a schematic block diagram of an externally-mounted intelligent speed-regulating device for a fan according to another embodiment of the present invention;

FIG. 4 is a schematic block diagram of an externally-mounted fan intelligent speed regulation device according to another embodiment of the present invention;

FIG. 5 is a schematic block diagram of another embodiment of the externally-mounted intelligent speed-regulating device for fan according to the present invention;

FIG. 6 is a block diagram of an external fan intelligent speed regulation device according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of an intelligent speed-adjusting device for an externally-mounted fan according to the utility model;

FIG. 8 is a schematic circuit diagram of an embodiment of an externally-mounted fan intelligent speed regulation device according to the present invention;

fig. 9 is a schematic signal waveform diagram of an external fan intelligent speed regulating device according to an embodiment of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the existing household fan market and families, the traditional mechanical switch type fans are common, but most of the mechanical switch type fans only have three-gear wind speed, each gear corresponds to one voltage output to an alternating current motor inside the fan, for example, three voltage gears of AC220V/AC180V/AC120V, and the requirements of users for intelligent speed regulation of the fan and intelligent work of the fan cannot be met. If a brand-new direct-current brushless intelligent fan is purchased to replace a still usable traditional mechanical switch type fan, not only is the purchase cost higher, but also waste is caused.

To this end, referring to fig. 1, in an embodiment of the present invention, the present invention provides an external fan intelligent speed adjusting device, including:

a housing;

the power supply device comprises a mains supply input end 10, wherein the mains supply input end 10 is arranged in a shell, an opening is formed in the shell corresponding to the position of the mains supply input end 10, and the mains supply input end 10 is used for being connected with mains supply voltage;

the pressure regulating output interface 20 is arranged in the shell, an opening is formed in the position, corresponding to the pressure regulating output interface 20, of the shell, and the pressure regulating output interface 20 is used for being connected with a fan;

the input device 50 is used for outputting a corresponding fan voltage regulating signal when being triggered by a user;

the input end of the voltage conversion component 30 is connected with the mains supply input end 10, and the output end of the voltage conversion component 30 is connected with the voltage regulation output interface;

and the control component 40 is electrically connected with the input device 50 and the controlled end of the voltage conversion component 30, respectively, and the control component 40 is used for controlling the voltage conversion component 30 to convert the voltage of the mains supply and then output alternating current with a voltage value corresponding to the voltage value of the fan voltage regulation signal to the fan through the voltage regulation output interface 20 according to the fan voltage regulation signal so as to drive the fan to work.

In this embodiment, the mains input 10 may be a plug, so that it can be plugged into a conventional socket in a home, thereby accessing the mains voltage. The voltage-regulating output interface 20 can be a socket, and a power plug of the old fan can be inserted into the voltage-regulating output interface 20, so that the external-hanging intelligent speed-regulating device for the fan is electrically connected with the power supply end of the fan.

In this embodiment, the input device 50 may be implemented by a keyboard, and the keyboard may be provided with a plurality of keys, for example, 10 numeric keys, a confirmation key, a functional key, and the like. A user can touch a corresponding key to enable the keyboard to output a corresponding fan voltage regulating signal, for example, if the user wants the voltage conversion module to output AC power of AC150V through the voltage regulating output interface 20, the user can sequentially press "1", "5", "0" and the confirmation number key, so that the keyboard outputs a corresponding fan voltage regulating signal representing that a 150V voltage value is required to the control module 40, and the fan voltage regulating signal can be a digital signal;

alternatively, the input device 50 may be implemented by a touch screen having a plurality of touchable regions, such as 10 digital touchable regions, a plurality of functional touchable regions, a confirm/cancel touchable region, and the like. The user can touch the corresponding touch area to enable the touchable screen to output the corresponding fan pressure regulating signal.

In this embodiment, the control component 40 may be implemented by a main control chip, the voltage conversion component 30 may include a zero-cross detection circuit 31, a driving chip 32, a rectification circuit 33, and an H-bridge circuit 34, and when receiving the fan voltage regulation signal, the control component 40 determines a voltage value required by a current user according to the fan voltage regulation signal, and controls the voltage conversion component 30 to perform voltage conversion on the mains voltage, and then outputs an ac power having a voltage value corresponding to the fan voltage regulation signal to a power supply terminal of the fan through the voltage regulation output interface 20. Therefore, in practical application, a user only needs to adjust the fan to the highest gear, namely the original AC220V gear, and then sets or adjusts the required voltage through the input device 50, so that the voltage output to the power supply end of the fan by the external-hanging fan intelligent speed regulation device can be correspondingly changed, and further the voltage output to the internal alternating current motor of the fan is changed, thereby realizing the intelligent speed regulation of the fan and improving the convenience of the user in using the fan.

The utility model comprises a shell, a mains supply input end 10, a voltage regulation output interface 20, an input device 50, a voltage conversion assembly 30 and a control assembly 40. The mains supply input end 10 is used for connecting a mains supply voltage; the voltage regulation output interface 20 is used for connecting a fan; the input device 50 is configured to output a corresponding fan voltage regulation signal when triggered by a user, and the control component 40 is configured to control the voltage conversion component 30 to perform voltage conversion on the mains voltage according to the fan voltage regulation signal, and then output ac power having a voltage value corresponding to the fan voltage regulation signal to the fan through the voltage regulation output interface 20, so as to drive the fan to operate. Therefore, in practical application, a user only needs to adjust the fan to the highest gear, namely the original AC220V gear, and then sets or adjusts the required voltage through the input device 50, so that the voltage output to the power supply end of the fan by the external-hanging fan intelligent speed regulation device can be correspondingly changed, and further the voltage output to the internal alternating current motor of the fan is changed, thereby realizing the intelligent speed regulation of the fan and improving the convenience of the user in using the fan.

Referring to fig. 2, in an embodiment of the present invention, the control component 40 includes a main control chip, and the voltage conversion component 30 includes a zero-crossing detection circuit 31, a driving chip 32, a rectification circuit 33, and an H-bridge circuit 34;

the main control chip is respectively electrically connected with the output end of the zero-crossing detection circuit 31, the controlled end of the driving chip 32 and the output end of the input device 50;

the input end of the zero-crossing detection circuit 31 is electrically connected with the output end of the rectifying circuit;

the commercial power input end 10, the rectifying circuit 33, the H-bridge circuit 34 and the voltage regulation output interface 20 are electrically connected in sequence, and the output end of the driving chip 32 is connected with the controlled end of the H-bridge circuit 34.

In this embodiment, the main control chip may adopt an MCU (micro controller unit), a DSP (Digital Signal processing) chip, an FPGA (Field Programmable Gate Array) chip, or the like, and the driving chip 32 may adopt an ac motor driving chip 32.

Optionally, in this embodiment, the rectifying circuit 33 may be implemented by a rectifying bridge composed of four diodes, so as to convert the commercial power accessed by the commercial power input terminal 10 into a dc pulse voltage.

Optionally, in this embodiment, the H-bridge circuit 34 may be implemented by using four symmetrically arranged switching tubes, where the first switching tube and the third switching tube belong to the same bridge arm, and the second switching tube and the fourth switching tube belong to the same bridge arm, that is, the first switching tube and the fourth switching tube are diagonally arranged, and the second switching tube and the third switching tube are diagonally arranged. In the actual working process, the main control chip controls the driving chip 32 to alternately switch and control a group of diagonally arranged switching tubes, so that the direct current pulse voltage output by the rectifying circuit 33 is inverted into alternating current voltage, and the alternating current voltage is output to the fan through the voltage regulating output interface 20 to drive the fan to work.

Optionally, the main control chip and the driving chip 32 may be integrated in the same integrated chip, for example, a TW15501 integrated chip is adopted, and the integrated chip may include a core unit, a pulse modulation unit, a driving unit, an SIP detection unit, a dynamic sampling unit, an I/O interface unit, and the like. The core unit may include an arithmetic unit and a storage unit.

When the integrated chip receives a fan voltage regulating signal sent by the input device 50, the voltage value of the alternating current required to be output by the voltage conversion component 30 is determined, and a PWM driving signal with a corresponding PWM duty ratio is output according to a preset PWM duty ratio-output voltage value mapping table to drive the H-bridge circuit 34 to work, so that the H-bridge circuit 34 inverts and regulates the direct current pulse signal output by the rectifying circuit 33, and then outputs the alternating current with the voltage value corresponding to the fan voltage regulating signal to the fan through the voltage regulating output interface 20 to drive the fan to work. So, drive H bridge circuit 34 through the integrated chip that has integrateed driver chip 32 and main control chip and carry out the contravariant work, compare in adopting the silicon controlled rectifier to drive, the wiring area of circuit has been reduced, the new ability of dispelling the heat has been improved, adopt driver chip 32 to control the harmonic component of the alternating current of reduction output that can be better through software modulation simultaneously, when having improved voltage output's accuracy nature, the noise of fan during operation has been reduced, the convenience that the user used has been improved.

Meanwhile, the zero-cross detection circuit 31 may also detect a zero-point time of a voltage of the dc pulse rectified by the rectification circuit 33, and output a zero-point detection signal to the integrated chip at the zero-point time of the voltage, so that the integrated chip performs a commutation operation at the zero-point time of the voltage in a process of driving the H-bridge circuit 34 to operate, so that the zero-point time of the voltage of the ac power output to the H-bridge circuit 34 and output to the fan is consistent with the zero-point time of the voltage of the mains supply voltage. Through the arrangement, the time of the voltage zero point of the commercial power accessed by the commercial power input end 10 can be kept consistent with the time of the voltage zero point of the alternating current output to the fan, so that the control assembly 40 can more accurately control the voltage value of the alternating current output by the voltage conversion assembly 30, the accuracy of the output voltage is improved, the situation that the voltage of the alternating current actually received by the fan is not correct and the rotating speed is out of control due to the fact that the time of the voltage zero point of the alternating current output to the fan is staggered with the time of the voltage zero point of the power voltage is avoided, and the stability and the accuracy of the fan controlled by the intelligent speed regulating device for the externally-hung fan are improved.

In another embodiment, referring to fig. 8, the external fan intelligent speed regulation device may further include a power management circuit, and the power management circuit may be implemented by using a LDO chip U2(low dropout regulator), and step down the dc pulse voltage V1 to a second voltage V2 adapted to the operation of the integrated chip U2, so as to provide an operating voltage for the integrated chip U1. Through the arrangement, the whole circuit can meet the working voltage requirements of different electronic components, and the compatibility and expandability of the whole circuit are improved.

Specifically, referring to fig. 8 and 9, the main control chip and the driving chip 32 are integrated on the same integrated chip U1 and the rectifying circuit 33, and the rectified mains voltage V0 is output as the dc pulse voltage V1.

The integrated chip U1 is provided with a voltage-regulating input pin SR, a left bridge control first pin L-VB, a left bridge control second pin L-HO, a left bridge control third pin L-VS, a left bridge control fourth pin L-LO, a right bridge control first pin R-VB, a right bridge control second pin R-HO, a right bridge control third pin R-VS, a right bridge control fourth pin R-LO and a zero point detection pin Z-INT, wherein a power supply pin of the integrated chip U1 is connected with a second voltage V2. The H-bridge control circuit 20 includes a first switch Q1, a second switch Q2, a third switch Q3, a fourth switch Q4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a fifth diode D5, and a sixth diode D6. The input ends of a first switch tube Q1 and a second switch tube Q2 are connected with a power supply voltage, the controlled end of the first switch tube Q1 is connected with a left bridge control second pin L-HO through a second resistor R2, and is also respectively connected with the first end of the power supply end of the fan, the input end of a third switch tube Q3, the left bridge control third pin L-VS and the left bridge control first pin L-VB through a first resistor R1, the controlled end of the second switch tube Q2 is connected with a right bridge control second pin R-HO through a sixth resistor R6, and is also respectively connected with the second end of the power supply end of the fan, the input end of a fourth switch tube Q3, the right bridge control third pin R-VS and the right bridge control first pin R-VB through a fifth resistor R5, the output ends of the third switch tube Q3 and the fourth switch tube Q4 are both grounded, the controlled end of the third switch tube Q3 is respectively connected with the left bridge control second pin L-HO through a fourth resistor R4, the fourth switch tube Q4 is also grounded through a third resistor R3, and the controlled end of the fourth switch tube Q8 is connected to the right bridge control fourth pin R-LO through an eighth resistor R8, and is also grounded through a seventh resistor R7. The zero-crossing detection circuit 3130 comprises an optical coupler U2, a ninth resistor R9 and a tenth resistor R10, a first pin of the optical coupler U2 is connected with a second end of the ninth resistor R9, a first end of the ninth resistor R9 is connected with a direct-current pulse voltage V1, a second pin and a third pin of the optical coupler U2 are grounded, and a fourth pin of the optical coupler U2 and a second pin of the tenth resistor R10 are connected with a zero-point detection pin Z-INT of an integrated chip U1 respectively.

Referring to fig. 9A and 9B, the commercial power voltage V0 is rectified by the rectifier circuit 33 and then becomes the dc pulse voltage V1, and in the time interval of the voltage zero point of the dc pulse voltage V1, referring to fig. 9C, the voltage value of the dc pulse voltage V1 cannot drive the optocoupler to operate, so that the zero point detection pin Z-INT of the integrated chip U1 is pulled up to the second voltage V2 by the tenth resistor R10, and when the voltage value of the dc pulse voltage V1 can drive the optocoupler to operate, the zero point detection pin Z-INT of the integrated chip U1 is pulled down by the optocoupler to be grounded, and a low-level signal is received. Then it is exactly the time of the voltage zero point of the dc pulse voltage V1 when the integrated chip U1 receives a high level signal through the zero point detection pin Z-INT.

After the integrated chip U1 receives the fan voltage regulation signal transmitted from the input device 50 through the voltage regulation input pin SR, when the zero point detection pin Z-INT receives the next high level, that is, the voltage zero point time of the dc pulse voltage V1 (refer to the time t0 in fig. 9), the first pin L-VB is controlled by the left bridge, the second pin L-HO is controlled by the left bridge, the third pin L-VS is controlled by the left bridge, the fourth pin L-LO is controlled by the left bridge, the first pin R-VB is controlled by the right bridge, the second pin R-HO is controlled by the right bridge, the third pin R-VS is controlled by the right bridge, the fourth pin R-LO is controlled by the right bridge, the first switch tube Q1 and the fourth switch tube Q4 are turned on, when the zero point detection pin Z-INT receives the next high level, that is, the second voltage zero point time of the dc pulse voltage V1 (refer to the time t1 in fig. 9), the integrated chip U1 turns off the first switch tube Q1 and the fourth switch tube Q4, the second switch tube Q2 and the third switch tube Q3 are conducted, and two groups of switch tubes at opposite corners are repeatedly switched and conducted at the voltage zero point moment of the subsequent direct current pulse voltage V1, so that the direct current pulse voltage V1 is converted into alternating current voltage and is output to the power supply end of the fan through the voltage-regulating output interface 20, and the fan is driven to rotate. Meanwhile, the integrated chip U1 can output a PWM driving signal with a corresponding duty ratio to drive a corresponding switching tube to act according to a preset PWM duty ratio-output voltage value mapping table, so as to change an ac voltage value finally output to a power supply end of the fan, and further change an ac voltage value finally output by the fan to an ac motor therein, thereby realizing intelligent speed regulation of the fan.

Referring to fig. 3, in an embodiment of the present invention, the externally-mounted intelligent speed regulating device further includes:

the current detection assembly 60 is arranged in the shell, the current detection assembly 60 is connected between the voltage conversion assembly 30 and the voltage regulation output interface 20 in series, and the output end of the current detection assembly 60 is electrically connected with the control assembly 40; a current detection component 60 for detecting the ac current value output by the voltage conversion component 30 and outputting a corresponding current detection signal;

the voltage detection assembly 70, the voltage detection assembly 70 is arranged in the shell, the detection end of the voltage detection assembly 70 is connected with the output end of the voltage conversion assembly 30, and the output end of the voltage detection assembly 70 is electrically connected with the control assembly 40; a voltage detection component 70 for detecting the ac voltage value output by the voltage conversion component 30 and outputting a corresponding voltage detection signal;

the first temperature detection assembly 80, the first temperature detection assembly 80 is arranged in the shell, and the first temperature detection assembly 80 is electrically connected with the control assembly 40; the first temperature detection assembly 80 is used for detecting the working temperature of the voltage conversion assembly 30 and outputting a corresponding temperature detection signal;

and the control component 40 is used for controlling the voltage conversion component 30 to stop working when the alternating current value output by the voltage conversion component 30 is determined to be larger than the preset alarm current value according to the current detection signal and/or when the alternating current value output by the voltage conversion component 30 is determined to be larger than the preset alarm voltage value according to the voltage detection signal and/or when the working temperature of the voltage conversion component 30 reaches the preset alarm temperature according to the temperature detection signal.

In this embodiment, optionally, the current detecting component 60 may be implemented by using a current sensing resistor, the current sensing resistor is connected in series to an electrical connection circuit between the output end of the voltage converting component 30 and the voltage regulating output interface 20, and a main control chip in the control component 40 may detect voltages at two ends of the current sensing resistor through an internal ADC module, so as to calculate a voltage across the current sensing resistor, and further calculate a current flowing through the current sensing resistor, so as to obtain an ac current value output by the voltage converting component 30;

alternatively, the current detecting component 60 may also be implemented by using a current detecting chip, and the current detecting chip may detect the value of the ac current output by the present voltage converting component 30 and output a corresponding current detecting signal to the control component 40, so that the control component 40 determines the value of the ac current output by the present voltage converting component 30. Therefore, in practical application, when the control component 40 determines that the ac current value output by the voltage conversion component 30 is greater than the preset alarm current value, the control component timely controls the voltage conversion component 30 to stop working, so as to prevent the voltage conversion component 30 from being damaged or ignited due to fault and overcurrent, and effectively improve the working stability and reliability of the external fan intelligent speed regulation device.

In this embodiment, the voltage detecting unit 70 may be implemented by a resistor voltage dividing circuit, the resistor voltage dividing circuit divides the voltage value of the ac power output by the voltage converting unit 30 to output a voltage detecting signal, the voltage value of the voltage detecting signal is the voltage value of the ac power output by the voltage converting unit 30 divided by the resistance ratio in the resistor voltage dividing circuit, the control unit 40 may detect the voltage value of the voltage detecting signal, and calculates the voltage value of the alternating current output by the voltage conversion component 30 according to the known resistance ratio in the resistance voltage division circuit, and when the alternating voltage value output by the voltage conversion component 30 is determined to be larger than the preset alarm voltage value, the voltage conversion component 30 is timely controlled to stop working, the voltage conversion component 30 is prevented from being damaged or ignited due to fault output overvoltage, and the working stability and reliability of the externally-hung fan intelligent speed regulation device are effectively improved.

In this embodiment, optionally, the first temperature detecting component 80 may be implemented by using an infrared temperature sensor, and the infrared temperature sensor may detect the operating temperature of the voltage converting component 30 and output a temperature detecting signal representing the operating temperature of the voltage converting component 30 to the control component 40 in the form of a digital signal;

optionally, the first temperature detecting component 80 may also be implemented by using a resistor divider circuit formed by an NTC thermistor and another resistor with a fixed resistance, and the NTC thermistor may change its own resistance due to the working temperature of the voltage converting component 30, so that the control circuit may calculate the current resistance of the NTC thermistor according to the voltage value of the temperature detection signal output by the resistor divider circuit (the voltage value of the temperature detection signal is determined by the resistance ratio of the voltage divider circuit formed by the NTC thermistor and the resistor with the fixed resistance), and determine the working temperature of the voltage converting component 30 according to a pre-stored NTC thermistor resistance-temperature mapping table. Therefore, in practical application, when the control component 40 determines that the working temperature of the voltage conversion component 30 reaches the preset alarm temperature, the control component controls the voltage conversion component 30 to stop working, so as to prevent the voltage conversion component 30 from being over-heated due to faults, and effectively improve the working stability and reliability of the external fan intelligent speed regulation device.

Referring to fig. 7, in an embodiment of the present invention, the externally-mounted intelligent speed regulating device further includes:

a plurality of louvres 101, a plurality of louvres 101 set up on the casing.

In this embodiment, because the inside circuit of outer hanging fan intelligent speed adjusting device, especially voltage conversion subassembly 30 during operation can produce a large amount of heats, so can set up a plurality of louvres 101 on the casing to the heat that makes circuit work produce can be through the louvre 101 on the casing in the air outside the casing of conduction fast, in order to reduce the temperature in the casing, thereby guarantee the stability of circuit work in the casing.

In another embodiment, referring to fig. 4 and 7, the external hanging type fan intelligent speed regulation device further comprises:

a power supply terminal;

the heat radiation fan 100, the heat radiation fan 100 is arranged in the shell, the position of the shell corresponding to the heat radiation fan 100 is provided with a heat radiation opening 102;

the input end of the switch circuit 90 is connected with the power supply end, the output end of the switch circuit 90 is connected with the power supply end of the cooling fan 100, and the controlled end of the switch circuit 90 is electrically connected with the control component 40;

and a control component 40, configured to determine, according to the current detection signal and the voltage detection signal, that the ac power value output by the voltage conversion component 30 reaches a preset active heat dissipation power value, and control the switch circuit 90 to turn on a path between the power supply terminal and the power supply terminal of the heat dissipation fan 100, so as to rotate the heat dissipation fan 100.

In this embodiment, the housing is further provided with a heat dissipation opening 102, and the switching circuit 90 may be implemented by a switching tube, such as a MOS tube, an IGBT tube, a triode, or the like; the heat dissipation fan 100 can be implemented by a direct current fan, for example, a 5V direct current fan, power supply terminals of the heat dissipation fan 100 include a power supply positive terminal and a power supply negative terminal, the power supply positive terminal is connected to the output terminal of the switch circuit 90, and the power supply negative terminal is grounded;

optionally, a battery may be disposed in the housing, and is configured to provide working voltage for some devices in the internal circuit and the cooling fan 100, the power supply terminal is electrically connected to the battery, and when the control component 40 determines, according to the current detection signal and the voltage detection signal, that the ac power value output by the voltage conversion component 30 reaches a preset active cooling power value, for example, 100W, the control switch circuit 90 is controlled to be in a closed state, so as to turn on a path between the power supply terminal and a positive power terminal of the cooling fan 100, thereby controlling the main control fan to start working.

Optionally, a second voltage conversion circuit, such as a DC/DC circuit, may be further disposed in the housing, so as to step down and convert the DC voltage output by the rectifying circuit 33, and then output a working voltage suitable for the period in the internal circuit and the normal operation of the heat dissipation fan 100. Similarly, the control module 40 may determine, according to the current detection signal and the voltage detection signal, that the ac power value output by the voltage conversion module 30 reaches a preset active heat dissipation power value, for example, 100W, and then control the switch circuit 90 to be in a closed state to conduct a path between the power supply terminal and the positive power terminal of the heat dissipation fan 100, so as to control the main control fan to start operating. The preset active heat dissipation power value is set by a research and development worker.

Through the arrangement, not only can passive heat dissipation be realized through the heat dissipation holes 101, but also active heat dissipation can be realized through the heat dissipation fan 100, so that when the voltage conversion assembly 30 works at high power, a large amount of heat generated by the voltage conversion assembly can be still quickly conducted to the air, and the working stability and reliability of the circuit in the externally-hung fan intelligent speed regulation device are further ensured.

Referring to fig. 5, in an embodiment of the present invention, the externally-mounted intelligent speed regulating device further includes:

the image sensing assembly 110, the image sensing assembly 110 is disposed in the housing, and the housing is provided with a shooting opening relative to the image sensing assembly 110; the image sensing assembly 110 is electrically connected with the control assembly 40;

the image sensing component 110 is used for shooting a user image and outputting a sleep adjustment signal when the user is determined to be in a sleep state according to the shot user image;

and the control component 40 is configured to control the voltage conversion component 30 to perform voltage conversion on the mains voltage and then output an ac voltage with a preset sleep voltage value to the fan to drive the fan to operate when the sleep adjustment signal is received.

In this embodiment, the image sensing component 110 may be implemented by a camera and an image recognition chip electrically connected to the camera, the camera is disposed at a position of the shooting opening of the housing, the camera can shoot an image of a user and output the image to the image recognition chip, the image recognition chip can recognize the shot image of the user, if it is recognized that the user is currently in a sleep state, the image sensing component outputs a sleep adjustment signal to the control component 40 in a form of a digital signal, and when the control component 40 receives the sleep adjustment signal, the control voltage conversion component 30 performs voltage conversion on the mains voltage and then outputs an ac voltage with a preset sleep voltage value to the fan, so as to drive the fan to operate. The preset sleep voltage value may be preset in advance by a developer, or may be actively set by a user through the input device 50 or an external terminal. Therefore, in practical application, when the external-hanging fan intelligent speed regulation device detects that the user is in a sleep state, the voltage of the alternating current output to the fan by the voltage conversion component 30 through the voltage regulation output interface 20 is reduced to reduce the rotating speed of the fan, so that the working noise of the fan is reduced, the sleep quality of the user is ensured, and the convenience of using the fan by the user is effectively improved.

Referring to fig. 6, in an embodiment of the present invention, the externally-mounted intelligent speed regulating device further includes:

the wireless communication component 120, the wireless communication component 120 is disposed in the housing, the wireless communication component 120 is electrically connected to the control component 40, and the wireless communication component 120 is used for communicating with an external terminal;

a wireless communication component 120 for accessing a wireless fan voltage regulating signal sent by an external terminal;

the control component 40 is used for controlling the voltage conversion component 30 to convert the voltage of the mains supply according to the wireless fan voltage regulation signal and then output alternating current with a voltage value corresponding to the wireless fan voltage regulation signal to the fan through the voltage regulation output interface 20 so as to drive the fan to work.

In this embodiment, optionally, the wireless communication component 120 may be implemented by a wireless communication chip, such as a WIFI communication chip, a bluetooth communication chip, a 4G/5G communication chip, an infrared communication chip, and the like, and establishes a communication connection with an external terminal through a corresponding communication network;

optionally, the external terminal may be a mobile phone of a user, or may be an adaptive remote controller, for example, the wireless communication component 120 is an infrared communication chip, and the external terminal is an adaptive infrared remote controller. The infrared remote controller can be provided with a plurality of function keys, and a user can set the voltage value of the alternating voltage output to the fan by the current externally-hung fan intelligent speed regulating device by triggering the corresponding function keys, and the infrared remote controller outputs a corresponding wireless fan voltage regulating signal to the control assembly 40 through the infrared communication chip. The control module 40 will control the voltage conversion module 30 to convert the voltage of the utility power into the ac power with the voltage corresponding to the wireless fan voltage-regulating signal, and then the ac power is transmitted to the fan through the voltage-regulating output interface 20 to drive the fan to work. Therefore, in practical application, a user can remotely control the externally-hung intelligent speed regulating device of the fan through an external terminal in wireless communication connection with the externally-hung intelligent speed regulating device of the fan, so that the remote control of an old fan electrically connected with the externally-hung intelligent speed regulating device of the fan is realized, and the convenience of using the fan by the user is effectively improved.

the display assembly 130, the display assembly 130 is electrically connected with the control assembly 40;

and the control component 40 is used for controlling the display component 130 to display the voltage value corresponding to the fan voltage regulating signal or the voltage value corresponding to the wireless fan voltage regulating signal according to the fan voltage regulating signal or the wireless fan voltage regulating signal.

In this embodiment, optionally, the display assembly 130 may be implemented by a display screen, such as an OLED screen, an LED screen, a TFT screen, an LCD screen, or the like; optionally, the display assembly 130 may also be integrated with the input device 50 described above, such as being implemented using a touch screen.

When the control component 40 receives the fan voltage regulating signal or the wireless fan voltage regulating signal, the current voltage value that needs to be output by the voltage conversion component 30 is determined according to the fan voltage regulating signal or the wireless fan voltage regulating signal, and the display component 130 is controlled to display the current voltage value, so that the voltage value of the alternating current output by the voltage conversion component 30 can be visually adjusted by a user, and the convenience of use of the user is improved.

It can be understood that the control component 40 not only can control the display component 130 to display the current voltage value of the alternating current output by the voltage conversion component 30, but also can control the display component 130 to display the current operating information of the fan, such as the remaining time information of the timed operation, the operating mode information, and the like, so that the user can know the operating state of the fan controlled by the intelligent speed regulating device for the externally-mounted fan.

Referring to fig. 6, in an embodiment of the present invention, the externally-mounted intelligent speed-adjusting device for a fan further includes:

the timing assembly 140, the timing assembly 140 is disposed in the housing, the timing assembly 140 is electrically connected to the control assembly 40, and the timing assembly 140 is configured to start timing when triggered and output a corresponding timing signal according to a timing duration;

an input device 50 further for outputting a timing signal when triggered;

the wireless communication component 120 is further configured to access a wireless timing signal sent by an external terminal;

the control component 40 is further configured to determine a timing duration when receiving the timing signal/wireless timing signal, control the timing component 140 to start, and control the voltage conversion component 30 to stop working when determining that the timing duration of the timing component 140 reaches the timing duration according to the timing signal transmitted by the timing component 140.

In this embodiment, optionally, the timing component 140 may be implemented by a clock chip, and when the clock chip is triggered and started by the control component 40, the clock chip starts timing and outputs a timing signal representing the current timed time;

optionally, the input device 50 may be a touch screen, a timing function area may be disposed on the touch screen, and a user may enter a timing setting interface when touching the timing function area, and output a corresponding timing signal by the input device 50 after setting a required timing duration;

optionally, the user may also set the timing time by pressing a corresponding timing setting key on the infrared remote controller, and pressing a corresponding number key on the infrared remote controller, and finally pressing a confirmation key so that the infrared remote controller outputs a wireless timing signal representing the timing duration set by the user to the control component 40 via the wireless communication component 120, by using a remote controller adapted to the wireless communication component 120, such as an infrared communication component and an infrared remote controller;

when the control component 40 receives the timing signal/wireless timing signal, it will determine the timing duration according to the timing signal/wireless timing signal, and control the clock chip to start timing, and when it is confirmed that the timed duration reaches the timing duration according to the timing signal sent by the clock chip, control the voltage conversion component 30 to stop working. Therefore, in practical application, the timing function of the old fan which cannot work regularly can be realized through the utility model, and the convenience of using the fan by a user is effectively improved.

It should be understood that, during the summer and autumn meeting, the temperature difference between the daytime air temperature and the midnight air temperature is large, if the user turns on the fan before sleeping, and after the midnight cooling, the fan driven by the original voltage can make the user feel relatively cold, thereby affecting the sleep quality of the user, and even possibly causing the user to freeze a cold.

To this end, referring to fig. 6, in an embodiment of the present invention, the externally-mounted intelligent speed regulating device further includes:

the second temperature detection assembly 150 is provided with a temperature opening, the second temperature detection assembly 150 extends out of the shell through the temperature opening, and the second temperature detection assembly 150 is electrically connected with the control assembly 40;

a second temperature detection assembly 150 for detecting an ambient temperature and outputting a corresponding ambient temperature detection signal;

an input device 50, further configured to output an intelligent mode signal when triggered by a user;

the wireless communication component 120 is further configured to access a wireless intelligent mode signal sent by an external terminal;

and the control component 40 is configured to determine an ambient temperature according to the ambient temperature detection signal when receiving the intelligent mode signal or the wireless intelligent mode signal, and control the voltage conversion component 30 to perform voltage conversion on the mains voltage and then output an alternating voltage with a voltage value corresponding to the ambient temperature to the fan, so as to drive the fan to work.

In this embodiment, the second temperature detecting assembly 150 may be implemented by an infrared temperature sensor, and a probe of the infrared temperature sensor may be extended out of the housing through the temperature opening, so as to detect the temperature of the surrounding environment, and transmit the detection result to the control assembly 40 in the form of a digital signal, such as an SPI signal, an I2C signal, a USART signal, and the like.

Optionally, the input device 50 may be a keyboard, the keyboard includes an intelligent mode key, and when the user presses the intelligent mode key, the keyboard outputs an intelligent mode signal to the control component 40;

optionally, the input device 50 may also be a touch screen, an intelligent mode touch area may be disposed on the touch screen corresponding to the "intelligent mode", and when the user touches the intelligent mode touch area, the touch screen outputs an intelligent mode signal to the control component 40;

optionally, the user may also use a remote controller adapted to the wireless communication module 120, such as an infrared communication module and an infrared remote controller, to press a corresponding intelligent mode key on the infrared remote controller, so that the infrared remote controller outputs a wireless intelligent mode signal to the control module 40;

when the control module 40 receives the intelligent mode signal or the wireless intelligent mode signal, it enters the intelligent mode, and determines the current ambient temperature according to the ambient temperature detection signal output by the second temperature detection module 150, and then controls the voltage conversion module 30 to perform voltage conversion on the mains voltage according to the preset ambient temperature-output voltage mapping table and the current ambient temperature, and then outputs the ac voltage with the voltage value corresponding to the ambient temperature to the fan, so as to drive the fan to work. For example, "when the ambient temperature is 26 degrees, the voltage conversion assembly 30 is controlled to output AC 220V; when the ambient temperature is 24 degrees, controlling the voltage conversion component 30 to output AC 200V; when the ambient temperature is 18 degrees, controlling the voltage conversion component 30 to output AC 140V; and when the ambient temperature is lower than 14 ℃, controlling the voltage conversion assembly 30 to stop working ". The environment temperature-output voltage mapping table may be preset by a developer, or may be set by a user through the input device 50. Therefore, when different environmental temperatures exist, the voltage conversion component 30 is controlled to output different voltages to the fan, so that the fan can present different rotating speeds according to the environmental temperatures, and therefore the problem that the sleeping quality and the body health of a user are affected due to too cold wind blown to the user by the fan which still keeps the higher rotating speed when the environmental temperature is lower in the middle of the night is prevented. The utility model effectively improves the intellectualization of the old fan and the convenience of the user for using the fan.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an outer hanging fan intelligent speed adjusting device which characterized in that includes:

a housing;

the input end of the voltage conversion component is connected with the mains supply input end, and the output end of the voltage conversion component is connected with the voltage regulation output interface;

2. The externally-hung intelligent fan speed regulating device as claimed in claim 1, wherein the control component comprises a main control chip, and the voltage conversion component comprises a zero-crossing detection circuit, a driving chip, a rectifying circuit and an H-bridge circuit;

3. The externally-hung intelligent fan speed regulating device as claimed in claim 2, wherein the main control chip and the driving chip are integrated in the same integrated chip.

4. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 1, further comprising:

the voltage detection assembly is arranged in the shell, the detection end of the voltage detection assembly is connected with the output end of the voltage conversion assembly, and the output end of the voltage detection assembly is electrically connected with the control assembly; the voltage detection assembly is used for detecting the alternating voltage value output by the voltage conversion assembly and outputting a corresponding voltage detection signal;

5. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 4, further comprising:

a power supply terminal;

6. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 1, further comprising:

the image sensing component is used for shooting a user image and outputting a sleep adjustment signal when the user is in a sleep state according to the shot user image;

7. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 1, further comprising:

8. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 7, further comprising:

the display assembly is electrically connected with the control assembly;

9. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 7, further comprising:

the timing assembly is arranged in the shell, is electrically connected with the control assembly and is used for starting timing when triggered and outputting a corresponding timing signal according to timing duration;

the input device is also used for outputting a timing signal when triggered;

10. The intelligent speed regulating device of an externally-mounted fan as claimed in claim 7, further comprising:

and the control component is used for determining the ambient temperature according to the ambient temperature detection signal when receiving the intelligent mode signal or the wireless intelligent mode signal, and controlling the voltage conversion component to convert the voltage of the mains supply voltage and then output alternating current voltage with a voltage value corresponding to the ambient temperature to the fan so as to drive the fan to work.