CN111637616B - Control method and device of fan assembly and drive circuit of fan assembly - Google Patents
Control method and device of fan assembly and drive circuit of fan assembly Download PDFInfo
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- CN111637616B CN111637616B CN202010533830.6A CN202010533830A CN111637616B CN 111637616 B CN111637616 B CN 111637616B CN 202010533830 A CN202010533830 A CN 202010533830A CN 111637616 B CN111637616 B CN 111637616B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides a control method and a control device of a fan assembly and a drive circuit of the fan assembly, wherein the control method of the fan assembly comprises the following steps: responding to a trigger instruction of switching the current wind control gear of the fan assembly to a target wind control gear, and sending a first control signal to drive the fan indicated by the first control signal to operate; determining that the fan indicated by the first control signal is in a first stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate; and the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal. The number of the fans started by the fan components at the same time is reduced, so that the current generated at the moment of speed regulation of the fan components is reduced to a certain extent compared with the impact current directly according to the second control signal when the fans are started, and further the voltage fluctuation is reduced.
Description
Technical Field
The invention relates to the technical field of electromagnetic compatibility, in particular to a control method and device of a fan assembly and a drive circuit of the fan assembly.
Background
Electromagnetic compatibility (EMC) refers to the ability of a device or system to perform satisfactorily in its electromagnetic environment without generating intolerable electromagnetic interference to any device in its environment, including EMS (electromagnetic resistance) and EMI (electromagnetic interference). Voltage fluctuation is one kind of EMI (electromagnetic interference) and is reflected in interference of an electric load to a public low-voltage power supply system. The power grid is not an ideal power source, and because of the internal resistance of the power grid, when other loads are started, the generated impact current can form voltage drop on the internal resistance of the power grid, and voltage fluctuation is formed. If the voltage fluctuation is too large, the stability of the power grid can be influenced, and even other loads of the electric appliance can be influenced. At the same time, voltage fluctuations may also cause variations in the brightness of the lighting device, an unstable visual effect, called "flicker", caused by light stimuli whose brightness or spectral distribution varies with time, the flicker risking to affect vision. Voltage fluctuation and flicker are also important items in EMC testing, and the corresponding national standard is GB17625.2 and the corresponding international standard is IEC 61000-3-3. If the corresponding standard is not met, the power grid impedance meeting the standard needs to be declared, which is equivalent to improving the requirements on the regional power grid; if some regional power grids cannot meet the requirements of product declaration, the regional power grids cannot be sold locally. Therefore, voltage fluctuations and flicker need to be avoided and reduced as much as possible.
The existing central air conditioner is provided with a fan, and the current of the fan as a load in the starting and stopping process can form voltage drop on the internal resistance of a power grid, so that voltage fluctuation is formed.
In the related technical scheme, gear switching of the fan is directly started according to a set windshield, impulse current generated by the starting mode is large, voltage fluctuation caused by the large impulse current can affect a power grid and other electric appliances (such as lamps), so that the voltage of the power grid is unstable, the electric appliances work abnormally (such as abnormal flickering of the lamps), and the sales requirement of the product is not met.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the present invention provides a control method for a fan assembly.
In a second aspect of the invention, a control apparatus for a fan assembly is provided.
A third aspect of the present invention is to provide an air conditioner.
In a fourth aspect of the present invention, a driving circuit of a fan assembly is provided.
A fifth aspect of the present invention is to provide an air conditioner.
In view of the above, according to a first aspect of the present invention, there is provided a control method of a fan assembly, wherein the fan assembly includes a plurality of fans, the control method of the fan assembly including: responding to a trigger instruction of switching the current wind control gear of the fan assembly to a target wind control gear, and sending a first control signal to drive the fan indicated by the first control signal to operate; determining that the fan indicated by the first control signal is in a first stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate; and the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal.
In the technical scheme of the invention, a control method of a fan assembly is provided, and specifically, when a trigger instruction of switching a fan from a current wind control gear to a first wind control gear is received, a first control signal is sent to drive a fan indicated by the first control signal to operate, then a second control signal is sent to drive the fan indicated by the second control signal to operate, in the process, because the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal, the number of the fans started at the same time by the fan assembly is reduced, the current generated at the moment of speed regulation of the fan assembly is reduced compared with the impact current when the fan indicated by the second control signal is started directly, so that voltage fluctuation is reduced, and the fan indicated by the first control signal is limited to be in a first stable state, and the fan is driven according to the second control signal, so that the impact current generated by the fan assembly in the starting and running processes can be effectively reduced, the voltage fluctuation is reduced, and the stability of the product is improved.
In addition, the control method of the fan assembly in the above technical solution provided by the present invention may further have the following additional technical features:
in the above technical solution, the step of determining that the fan indicated by the first control signal is in the first steady state specifically includes: determining to send a first control signal, and starting timing; and determining that the timing duration is greater than or equal to a first duration, and determining that the fan indicated by the first control signal is in a first stable state.
In the technical scheme, whether the fan indicated by the first control signal is in the first stable state or not is judged by judging the timing duration after the first control signal is sent, specifically, when the timing duration after the first control signal is sent is greater than or equal to the first duration, the fan is judged to be in the first stable state, and in the process, the judgment process of the first stable state is simple and is convenient to realize.
In any of the above technical solutions, the step of determining that the fan indicated by the first control signal is in the first steady state, and sending the second control signal to drive the fan indicated by the second control signal to operate specifically includes: determining that the fan indicated by the first control signal is in a first steady state, and sending a third control signal to drive the fan indicated by the third control signal to operate; determining that the fan indicated by the third control signal is in a second stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate; the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and is smaller than that of the fans driven under the control of the second control signal.
In the technical scheme, the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal, so that the number of the fans started by the fan assembly at the same time is reduced, and the current generated at the moment of speed regulation of the fan assembly is reduced to a certain extent compared with the impact current directly according to the second control signal when the fans are started, thereby reducing voltage fluctuation.
In addition, the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and smaller than that of the fans driven under the control of the second control signal, and after the fans indicated by the third control signal are driven to operate, the current for driving the fans indicated by the second control signal to operate is reduced, voltage fluctuation is further reduced, and the stability of a product is improved.
In any of the above technical solutions, the step of determining that the fan indicated by the third control signal is in the second steady state specifically includes: determining to transmit a third control signal and starting timing; and determining that the timing duration is greater than or equal to the second duration, and determining that the fan indicated by the third control signal is in a second steady state.
In the technical scheme, whether the fan indicated by the third control signal is in the second stable state is judged by judging the timing duration after the third control signal, specifically, when the timing duration after the third control signal is sent is greater than or equal to the second duration, the fan is judged to be in the second stable state, and in the process, the judgment process of the second stable state is simple and is convenient to realize.
According to a second aspect of the present invention, there is provided a control apparatus for a fan assembly, comprising: a memory having a computer program stored thereon; a processor executing a computer program to implement the steps of a method of controlling a fan assembly as claimed in any one of the preceding claims.
The technical solution of the present invention provides a control device of a fan assembly, where the control device of the fan assembly includes a memory and a processor, and the processor executes a computer program to implement the steps of the control method of the fan assembly according to any one of the above descriptions, so that the control device of the fan assembly has all the beneficial technical effects of the control method of the fan assembly, and details are not repeated herein.
According to a third aspect of the present invention, there is provided an air conditioner comprising: a fan assembly; like the controlling means of above-mentioned fan subassembly, wherein, fan subassembly is connected with fan subassembly's controlling means.
In the technical scheme of the invention, the air conditioner is provided, wherein the air conditioner comprises a fan assembly and a control device of the fan assembly connected with the fan assembly, wherein the control device of the fan assembly has all the beneficial technical effects of the control method of the fan assembly, and the air conditioner also has all the beneficial technical effects of the control method of the fan assembly as the air conditioner comprises the control device of the fan assembly, and the description is omitted herein.
According to a fourth aspect of the present invention, there is provided a drive circuit for a fan assembly, the fan assembly comprising a plurality of fans, the drive circuit comprising: the shift register is connected with the fans; a controller connected with the shift register, the controller configured to: responding to a trigger instruction of switching the fan assembly from a current wind control gear to a target wind control gear, and sending a control signal to a shift register, wherein the control signal comprises a first control signal and a second control signal, so that the shift register drives a fan indicated by the first control signal to operate; determining that the fan indicated by the first control signal is in a first stable state, and sending a second control signal to the shift register so that the shift register drives the fan indicated by the second control signal to operate; the number of the fans driven by the shift register under the control of the first control signal is smaller than that of the fans driven by the shift register under the control of the second control signal.
The technical scheme of the invention provides a driving circuit of a fan assembly, wherein a shift register has the characteristic of converting serial input into parallel output, so that the shift register can be used for realizing the independent control of a single input port on a plurality of fans, specifically, the number of the fans driven by the shift register under the control of a first control signal is less than that of the fans driven by the shift register under the control of a second control signal, and the number of the fans started at the same time of the fan assembly is reduced, so that the current generated at the moment of speed regulation of the fan assembly is reduced compared with the impact current directly according to the second control signal when the fan is started, further the voltage fluctuation is reduced, the impact current generated by the fan in the starting and running processes can be effectively reduced by limiting the fan indicated by the first control signal to be in a first stable state and then driving according to the second control signal, and further, voltage fluctuation is reduced, and the stability of the product is improved.
In addition, the driving circuit of the fan assembly in the above technical solution provided by the present invention may further have the following additional technical features:
in the above-described aspect, the controller is configured to: determining to send a first control signal to a shift register and starting timing; and determining that the timing duration is greater than or equal to a first duration, and determining that the fan indicated by the first control signal is in a first stable state.
In the technical scheme, whether the fan indicated by the first control signal is in the first stable state or not can be judged by judging the timing duration after the first control signal is sent to the shift register, specifically, when the timing duration after the first control signal is sent to the shift register is greater than or equal to the first duration, the fan indicated by the first control signal is judged to be in the first stable state, wherein the judgment process of the first stable state is simple and is convenient to implement.
In any of the above aspects, the controller is configured to: determining that the fan indicated by the first control signal is in a first steady state, and sending a third control signal to drive the fan indicated by the third control signal to operate; determining that the fan indicated by the third control signal is in a second stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate; the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and is smaller than that of the fans driven under the control of the second control signal.
In the technical scheme, the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal, so that the number of the fans started by the fan assembly at the same time is reduced, and the current generated at the moment of speed regulation of the fan assembly is reduced to a certain extent compared with the impact current directly according to the second control signal when the fans are started, thereby reducing voltage fluctuation.
In addition, the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and smaller than that of the fans driven under the control of the second control signal, and after the fans indicated by the third control signal are driven to operate, the current for driving the fans indicated by the second control signal to operate is reduced, voltage fluctuation is further reduced, and the stability of a product is improved.
In any of the above aspects, the controller is configured to: determining to send a third control signal to the shift register and starting timing; and determining that the timing duration is greater than or equal to the second duration, and determining that the fan indicated by the third control signal is in a second steady state.
In the technical scheme, whether the fan indicated by the third control signal is in the second stable state or not can be judged by judging the timing duration after the third control signal is sent to the shift register, specifically, when the timing duration after the third control signal is sent to the shift register is greater than or equal to the second duration, the fan indicated by the third control signal is judged to be in the second stable state, wherein the judgment process of the second stable state is simple and is convenient to implement.
In any one of the above technical solutions, the driving circuit of the fan assembly further includes: the plurality of switching devices are correspondingly connected with the plurality of fans; and the input end of the driving circuit is connected with the output end of the shift register, the output end of the driving circuit is connected with the control ends of the plurality of switching devices, and the driving circuit is configured to drive the switching devices to act.
In the technical scheme, the driving circuit of the fan assembly further comprises a driving circuit and a plurality of switching devices, wherein each switching device correspondingly controls one fan, the shift register controls the conduction state of the switching device through the driving circuit, the running state of the fan connected with the switching device is further realized, the driving circuit and the switching devices are used in a combined mode, and the reliability of the control process of the driving circuit of the fan assembly is ensured.
According to a fifth aspect of the present invention, there is provided an air conditioner comprising: a fan assembly; the drive circuit of the fan assembly according to any of the fourth aspects, wherein the fan assembly is connected to the drive circuit of the fan assembly.
The invention provides an air conditioner, wherein the air conditioner comprises a fan assembly and a driving circuit of the fan assembly, which is connected with the fan assembly, as provided by any one of the fourth technical schemes, therefore, the air conditioner provided by the embodiment of the invention has all the beneficial effects of the driving circuit of the fan assembly provided by any one of the fourth technical schemes, which are not listed herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates a flow diagram of a method of controlling a fan assembly according to one embodiment of the present disclosure;
FIG. 2 illustrates a flow diagram of a method of controlling a fan assembly according to one embodiment of the present disclosure;
FIG. 3 illustrates a flow diagram of a method of controlling a fan assembly according to one embodiment of the present disclosure;
FIG. 4 shows a schematic block diagram of a control arrangement for a fan assembly according to one embodiment of the present invention;
FIG. 5 illustrates a schematic block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 6 illustrates a topological schematic of a drive circuit of a fan assembly in accordance with one embodiment of the present invention;
FIG. 7 illustrates a voltage ripple phenomenon when a fan assembly is driven by a drive circuit of the fan assembly according to one embodiment of the present invention;
FIG. 8 illustrates a schematic block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 9 illustrates a voltage fluctuation phenomenon when a fan assembly is driven by a control method for operating the fan assembly or by a driving circuit for the fan assembly in a static pressure environment according to an embodiment of the present invention;
FIG. 10 illustrates voltage ripple when the drive circuit of the fan assembly operates according to one embodiment of the present invention;
fig. 11 illustrates a voltage fluctuation phenomenon in operation of a driving circuit of a fan assembly according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 4, 5, 6 and 8 is:
400 FAN assembly's controlling means, 402 memory, 404 treater, 500 air conditioner, 502 FAN assembly, 600 FAN assembly's drive circuit, 602 drive circuit, FAN FAN, IC2 shift register, MCU controller, RY switching device, IC1 integrated chip.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example one
According to an embodiment of the present invention, as shown in fig. 1, the present invention provides a control method of a fan assembly, including:
102, responding to a trigger instruction of switching a fan assembly from a current wind control gear to a target wind control gear, and sending a first control signal to drive a fan indicated by the first control signal to operate;
and 104, determining that the fan indicated by the first control signal is in a first stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate.
And the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal.
In the technical scheme of the invention, a control method of a fan assembly is provided, and specifically, when a trigger instruction of switching a fan from a current wind control gear to a first wind control gear is received, a first control signal is sent to drive a fan indicated by the first control signal to operate, then a second control signal is sent to drive the fan indicated by the second control signal to operate, in the process, because the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal, the number of the fans started at the same time by the fan assembly is reduced, the current generated at the moment of speed regulation of the fan assembly is reduced compared with the impact current when the fan indicated by the second control signal is started directly, so that voltage fluctuation is reduced, and the fan indicated by the first control signal is limited to be in a first stable state, and the fan is driven according to the second control signal, so that the impact current generated by the fan assembly in the starting and running processes can be effectively reduced, the voltage fluctuation is reduced, and the stability of the product is improved.
The first stable state can be understood as that after the fan is started according to the target wind control gear, the duration of the effective value of the operating voltage of the fan, which fluctuates by less than or equal to 3% relative to the rated voltage, is greater than or equal to 1 second, that is, the fan is considered to enter the first stable state after being started according to the target wind control gear.
In one embodiment, the rotating speed value of the fan assembly when the fan assembly operates according to the current wind control gear is smaller than the rotating speed value of the fan assembly when the fan assembly operates according to the target wind control gear, namely the rotating speed of the fan assembly is increased according to the purpose of a trigger instruction for switching the current wind control gear to the target wind control gear.
In one embodiment, the rotating speed value of the fan assembly when the fan assembly operates according to the current wind control gear is larger than the rotating speed value of the fan assembly when the fan assembly operates according to the target wind control gear, namely the rotating speed of the fan assembly is reduced by the purpose of a trigger instruction for switching the current wind control gear to the target wind control gear.
In one embodiment, the number of the fans is one or more.
In one embodiment, the number of fans driven under the control of the second control signal is less than or equal to the number of fans included in the fan assembly.
Example two
In an embodiment of the present invention, as shown in fig. 2, a method for controlling a fan assembly is provided, including:
202, responding to a trigger instruction of switching a fan assembly from a current wind control gear to a target wind control gear, and sending a first control signal to drive a fan indicated by the first control signal to operate;
and step 206, determining that the timing duration is greater than or equal to the first duration, and sending a second control signal to drive the fan indicated by the second control signal to operate.
In the technical scheme, whether the fan indicated by the first control signal is in the first stable state is judged by judging the timing duration after the first control signal is judged, specifically, when the timing duration after the first control signal is sent is greater than or equal to the first duration, the fan is judged to be in the first stable state, and in the process, relative to a judgment mode that the duration of the fluctuation of the effective value of the operating voltage of the fan relative to the rated voltage is less than or equal to 3% is greater than or equal to 1 second, the judgment process of the first stable state is simple and is convenient to realize.
In the above embodiment, the first time period is a sum of a time period from the start of the fan to the steady state and a first set time period, where the first set time period is greater than or equal to 1 second.
In the above embodiment, the value range of the first duration is greater than or equal to 3 seconds; the number of the fans is one or more.
In one embodiment, the rotating speed value of the fan assembly when the fan assembly operates according to the current wind control gear is smaller than the rotating speed value of the fan assembly when the fan assembly operates according to the target wind control gear, namely the rotating speed of the fan assembly is increased according to the purpose of a trigger instruction for switching the current wind control gear to the target wind control gear.
In one embodiment, the rotating speed value of the fan assembly when the fan assembly operates according to the current wind control gear is larger than the rotating speed value of the fan assembly when the fan assembly operates according to the target wind control gear, namely the rotating speed of the fan assembly is reduced by the purpose of a trigger instruction for switching the current wind control gear to the target wind control gear.
In any of the above embodiments, the current wind control gear may be a zero gear, wherein the zero gear may be understood as a stop operation state.
EXAMPLE III
In an embodiment of the present invention, as shown in fig. 3, a method for controlling a fan assembly is provided, including:
and step 306, determining that the fan indicated by the third control signal is in a second stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate.
The number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and is smaller than that of the fans driven under the control of the second control signal.
In the technical scheme, the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal, so that the number of the fans started by the fan assembly at the same time is reduced, and the current generated at the moment of speed regulation of the fan assembly is reduced to a certain extent compared with the impact current directly according to the second control signal when the fans are started, thereby reducing voltage fluctuation.
In addition, the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and smaller than that of the fans driven under the control of the second control signal, and after the fans indicated by the third control signal are driven to operate, the current for driving the fans indicated by the second control signal to operate is reduced, voltage fluctuation is further reduced, and the stability of a product is improved.
In one embodiment, the step of determining that the fan indicated by the third control signal is in the second steady state specifically includes: determining to transmit a third control signal and starting timing; and determining that the timing duration is greater than or equal to the second duration, and determining that the fan indicated by the third control signal is in a second steady state.
In the technical scheme, whether the fan indicated by the third control signal is in the second stable state is judged by judging the timing duration after the third control signal, specifically, when the timing duration after the third control signal is sent is greater than or equal to the second duration, the fan is judged to be in the second stable state, and in the process, the judgment process of the second stable state is simple and is convenient to realize.
The second stable state can be understood as that after the fan is started according to the target wind control gear, the duration of the effective value of the operating voltage of the fan, which fluctuates by less than or equal to 3% relative to the rated voltage, is greater than or equal to 1 second, that is, the fan is considered to enter the second stable state after being started according to the target wind control gear.
In the above embodiment, the second time period is a sum of a time period from the start of the fan to the steady state and a first set time period, where the first set time period is greater than or equal to 1 second.
In the above embodiment, the value range of the second duration is greater than or equal to 3 seconds.
In any of the above embodiments, the current wind control gear may be a zero gear, wherein the zero gear may be understood as a stop operation state.
Example four
In one embodiment of the present invention, as shown in fig. 4, a control apparatus 400 for a fan assembly is provided, including: a memory 402, the memory 402 having a computer program stored thereon; processor 404, processor 404 executing the computer program to: the steps of a method of controlling a fan assembly as claimed in any preceding claim.
The technical solution of the present invention provides a control device 400 for a fan assembly, wherein the control device 400 for a fan assembly includes a memory 402 and a processor 404, and since the processor 404 executes a computer program to implement the steps of the control method for a fan assembly according to any one of the above descriptions, the control device 400 for a fan assembly has all the beneficial technical effects of the control method for a fan assembly, and thus, no further description is provided herein.
EXAMPLE five
In an embodiment of the present invention, as shown in fig. 5, an air conditioner 500 is proposed, wherein the air conditioner 500 includes: a fan assembly 502; the control device 400 of the fan assembly as provided in the second aspect, wherein the control device 400 of the fan assembly is connected with the fan assembly 502.
The present invention provides an air conditioner 500, wherein the air conditioner 500 includes a fan assembly 502 and a control device 400 of the fan assembly provided in any embodiment of the second aspect, which is connected to the fan assembly 502, and therefore, the air conditioner 500 provided in the embodiment of the present invention has all the advantages of the control device 400 of the fan assembly provided in any embodiment of the second aspect, which are not listed herein.
EXAMPLE six
In one embodiment of the present invention, as shown in fig. 6, a driving circuit 600 of a FAN assembly is provided, the FAN assembly includes a plurality of FANs FAN, and the driving circuit 600 of the FAN assembly includes: the shift register IC2, the shift register IC2 is connected with a plurality of FANs FAN; a controller MCU connected to the shift register IC2, the controller MCU configured to: responding to a trigger instruction of the fan assembly to switch from the current wind control gear to the target wind control gear, and sending control signals to the shift register IC2, wherein the control signals comprise a first control signal and a second control signal, so that the shift register IC2 drives the fan indicated by the first control signal to operate; determining that the fan indicated by the first control signal is in a first stable state, and sending a second control signal to the shift register IC2 to enable the shift register IC2 to drive the fan indicated by the second control signal to operate; the number of fans driven by the shift register IC2 under the control of the first control signal is smaller than that of fans driven by the shift register IC2 under the control of the second control signal.
The embodiment of the invention provides a driving circuit 600 of a FAN assembly, wherein a shift register IC2 has a characteristic of converting serial input into parallel output, so that a single input port can be used for independently controlling a plurality of FANs FAN FANs, specifically, when a trigger instruction that the FAN assembly is switched from a current wind control gear to a target wind control gear is received, a control signal is sent to the shift register IC2, so that the shift register IC2 drives FANs indicated by a first control signal to operate, and the shift register IC2 drives FANs indicated by a second control signal to operate, because the number of the FANs driven by the shift register IC2 under the control of the first control signal is smaller than the number of the FANs driven by the shift register IC2 under the control of the second control signal, the number of the FANs started by the FAN assembly at the same time is reduced, and the current generated at the moment of speed regulation of the FAN assembly is larger than the current generated at the moment when the FANs are started directly according to the second control signal The impulse current is reduced to some extent, and then voltage fluctuation is reduced, and the fan indicated by limiting the first control signal is in a first stable state and is driven according to the second control signal, so that the impulse current generated in the starting and running processes of the fan can be effectively reduced, and further the voltage fluctuation is reduced, and the stability of the product is improved.
In one embodiment, the driving circuit 600 of the fan assembly further includes: the plurality of switching devices RY are correspondingly connected with the plurality of FANs FAN; and a driving circuit 602, wherein an input end of the driving circuit 602 is connected to an output end of the shift register IC2, an output end of the driving circuit 602 is connected to control ends of the plurality of switching devices RY, and the driving circuit 602 is configured to drive the switching devices to operate.
In this embodiment, the driving circuit 600 of the fan assembly further includes a driving circuit 602 and a plurality of switching devices RY, where each switching device controls one fan correspondingly, the shift register IC2 controls the conducting state of the switching device through the driving circuit 602, so as to realize the operating state of the fan connected to the switching device, and the reliability of the control process of the driving circuit 600 of the fan assembly is ensured by the combined use of the driving circuit 602 and the plurality of switching devices RY.
In one embodiment, the driving circuit 602 includes an integrated chip IC1, wherein an input terminal of the integrated chip IC1 is connected to the shift register IC2, an output terminal of the integrated chip IC1 is connected to the switching devices, the number of the switching devices is the same as the number of the FANs, and the switching devices RY have a one-to-one correspondence relationship, and specifically, as shown in fig. 6, the switching devices RY include RY1, RY2, RY3, RY4, and RY5, which correspond to the FANs FAN1, FAN2, FAN3, FAN4, and FAN 5. Specifically, the number of the input ends of the integrated chip IC1 is the same as the number of the output ends of the shift register IC2, and when the input end of the shift register IC2 receives a trigger instruction for switching the fan assembly from the current wind control gear to the target wind control gear, the shift register IC2 outputs a signal to the integrated chip IC1 in parallel to drive a switching device connected with the integrated chip IC1 to act.
The switch device is a relay, and when the relay is electrified, the relay controls the fan to be electrified and started; when the relay is powered off, the relay controls the fan to stop.
In one embodiment, the integrated chip IC1 is ULN2003A and the shift register IC2 is CD 4094.
In this embodiment, the shift register IC2 may be used to individually control each switching device, or may be understood as to individually control the fans corresponding to the switching devices, specifically, the first fan may be turned on first, then the second fan may be turned on, and then the third fan may be turned on, where the first fan, the second fan, and the third fan are turned on in sequence, so that voltage fluctuation may be effectively reduced.
Specifically, as shown in fig. 7, the measured voltage fluctuations of the fan assembly controlled by the embodiment were 8.4V, 7.3V, and 8V, and the maximum value was determined to be 8.4V; similarly, the voltage 5.8V was determined from the measured 5.8V, 4.85V and 5V, and the relative steady state voltage change dc (%) -5.8V/327V-1.77% (limited to 3.3%) was determined from the above data; the maximum relative voltage change dmax (%) -8.4V/327V-2.57% (limited to 4%), where dc to dmax results in a ratio dc1, dc2 … dcn of each fluctuation value to the last steady state (rather than the maximum steady state); dmax1, dmax2 … dmaxn, where dmax is the maximum in the ratio of the value of each fluctuation to the last steady state, i.e. 8.4V is the maximum in the ratio of dmax to the value of each fluctuation, and similarly 5.8V is the maximum in the ratio of dc to the value of each fluctuation to the last steady state.
In one embodiment, if one of the fans is not switched into a steady state, the measurement result is as follows:
relative steady state voltage change dc (%) (5.8V +4.85V)/327V 3.25% (limited to 3.3%);
maximum relative voltage change dmax (%) (5.8V +7.3V)/327V 4.00% (limited to 4%);
in this embodiment, the voltage fluctuation is effectively reduced by limiting the fans to enter the steady state in sequence and then starting other fans, and the stability of the operation of the driving circuit 600 of the fan assembly is improved.
In any of the above embodiments, the trigger instruction for switching the fan from the current wind control gear to the target wind control gear may be sent by a line controller connected to the fan assembly, or may be sent by a remote controller paired with the fan assembly.
In any of the above embodiments, the controller MCU is specifically configured to: determining to send a first control signal to the shift register IC2 to start timing; and determining that the timing duration is greater than or equal to a first duration, and determining that the fan indicated by the first control signal is in a first stable state.
In this technical scheme, whether the fan indicated by the first control signal is in the first stable state may be determined by determining a timing duration after the first control signal is sent to the shift register IC2, and specifically, when the timing duration after the first control signal is sent to the shift register IC2 is greater than or equal to the first duration, it is determined that the fan indicated by the first control signal is in the first stable state, where a determination process of the first stable state is simple and is convenient to implement.
In one embodiment, the first time period is a sum of a time period for starting the fan to enter the steady state and a first set time period, wherein the first set time period is greater than or equal to 1 second.
In one embodiment, the first duration is greater than or equal to 3 seconds.
EXAMPLE seven
In an embodiment of the present invention, as shown in fig. 6, the controller MCU is specifically configured to: determining that the fan indicated by the first control signal is in a first steady state, and sending a third control signal to drive the fan indicated by the third control signal to operate; determining that the fan indicated by the third control signal is in a second stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate; the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and is smaller than that of the fans driven under the control of the second control signal.
In the technical scheme, the number of the fans driven under the control of the first control signal is smaller than that of the fans driven under the control of the second control signal, so that the number of the fans started by the fan assembly at the same time is reduced, and the current generated at the moment of speed regulation of the fan assembly is reduced to a certain extent compared with the impact current directly according to the second control signal when the fans are started, thereby reducing voltage fluctuation.
In addition, the number of the fans driven under the control of the third control signal is larger than that of the fans driven under the control of the first control signal and smaller than that of the fans driven under the control of the second control signal, and after the fans indicated by the third control signal are driven to operate, the current for driving the fans indicated by the second control signal to operate is reduced, voltage fluctuation is further reduced, and the stability of a product is improved.
In any of the above embodiments, the controller MCU is specifically configured to: determining to send a third control signal to shift register IC2 to start timing; and determining that the timing duration is greater than or equal to the second duration, and determining that the fan indicated by the third control signal is in a second steady state.
In this technical scheme, whether the fan indicated by the third control signal is in the second stable state may be determined by determining the time length of the timing after the third control signal is sent to the shift register IC2, and specifically, when the time length of the timing after the third control signal is sent to the shift register IC2 is greater than or equal to the second time length, the fan indicated by the third control signal is determined to be in the second stable state, where a determination process of the second stable state is simple and is convenient to implement.
In the above embodiment, the second time period is a sum of a time period from the start of the fan to the steady state and a first set time period, where the first set time period is greater than or equal to 1 second.
In the above embodiment, the value range of the second duration is greater than or equal to 3 seconds.
Example eight
In one embodiment of the present invention, as shown in fig. 8, an air conditioner 500 is proposed, wherein the air conditioner 500 includes a fan assembly 502; the fan assembly drive circuit 600 of any of the above, wherein the fan assembly 502 is coupled to the fan assembly drive circuit 600.
In this embodiment, the air conditioner 500 has static pressure in the actual use environment, i.e. the fan is hindered by the environment during operation, and when the fan in the air conditioner operates the fan assembly operation method defined in any of the above embodiments, the detected effect of reducing the voltage fluctuation is more remarkable, as shown in fig. 9, specifically, the measured voltage fluctuation is 9.56V, 9.31V, 9.5V, and further the maximum value is determined to be 9.56V; similarly, the voltage 1.75V was determined from the measured 1.75V, 1.68V and 1.5V, and the relative steady state voltage change dc (%) -1.75V/327V-0.54% (limited to 3.3%) was determined from the above data; the maximum relative voltage change dmax (%) -9.56V/327V-2.92% (limited to 4%).
In the embodiment, while reducing and reducing the impact current and the steady-state operation current in the starting mode of controlling the fan or the fan assembly, the impact current and the steady-state operation current can be reduced by increasing the static pressure, and further the voltage fluctuation is reduced, so that the operation stability of the air conditioner is improved.
In one embodiment, the air conditioner further comprises a control board (not shown in the figure), wherein the main control board controls the shift register to operate to control the fan, specifically, the control board sends a serial signal, such as 00000001, a clock signal and the serial signal (such as 00000001) to the shift register to drive the IC1, the relay of the high wind gear of the first fan is driven to be closed by the IC1, and the first fan operates in high wind; the control panel sends a serial signal, such as 00000011, a clock signal and a serial signal (such as 00000011) to the shift register to drive the IC1, the IC1 is used for driving a relay of a high wind gear of a first fan to be closed, a relay of a high wind gear of a second fan to be closed, the first fan and the second fan run in high wind, the control panel sends a serial signal, such as 00000111, the clock signal and the serial signal (such as 00000111) to the shift register to drive the IC1, the IC1 is used for driving the relay of the high wind gear of the first fan to be closed, the relay of the high wind gear of the second fan to be closed, the first fan, the second fan and the third fan run in high wind, and at this moment, a fan assembly of the air conditioner runs in high wind.
In any of the above embodiments, the trigger instruction for switching the fan from the current wind control gear to the target wind control gear may be sent by a line controller connected to the air conditioner, or may be sent by a remote controller paired with the air conditioner.
In any of the above embodiments, as shown in fig. 10 and 11, whether the fan enters the steady state is determined by determining that the duration of the effective value of the fan operating voltage, which is less than or equal to 3% of the fluctuation of the rated voltage, is greater than or equal to 1 second, and by limiting that the fan is in the steady state and then switching the wind control gear, the problem of large voltage fluctuation caused by switching the gear when the voltage of the fan is unstable after switching the gear can be further reduced.
In any of the above embodiments, the fan may be a direct current (brushless) fan or an alternating current fan, and when the fan is a direct current (brushless) fan, the power supply of the direct current fan is direct current rectified by alternating current and filtered by an electrolytic capacitor, and since the fan is not started immediately when the fan is powered on (for example, a main control chip of the fan needs a period of time to drive the fan), the alternating current power supply slowly charges the electrolytic capacitor during the power-on period, and large current impact is not generated; however, when the fan is turned off, the load current suddenly decreases, which may cause a problem of voltage fluctuation. However, because the direct current brushless fan can continuously adjust the speed, when the direct current brushless fan is shut down, the wind speed is gradually reduced by controlling the direct current brushless fan according to the control method of the direct current brushless fan, and then the direct current brushless fan is shut down.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A control method of a fan assembly, wherein the fan assembly comprises a plurality of fans, the control method of the fan assembly comprising:
responding to a trigger instruction of the fan assembly for switching from a current wind control gear to a target wind control gear, and sending a first control signal to drive the fan indicated by the first control signal to operate;
determining that the fan indicated by the first control signal is in a first stable state, and sending a second control signal to drive the fan indicated by the second control signal to operate;
wherein the number of fans driven under the control of the first control signal is less than the number of fans driven under the control of the second control signal;
the step of determining that the fan indicated by the first control signal is in a first steady state, and sending a second control signal to drive the fan indicated by the second control signal to operate includes:
determining that the fan indicated by the first control signal is in a first steady state, and sending a third control signal to drive the fan indicated by the third control signal to operate;
determining that the fan indicated by the third control signal is in a second steady state, and sending the second control signal to drive the fan indicated by the second control signal to operate;
wherein the number of the fans driven under the control of the third control signal is greater than the number of the fans driven under the control of the first control signal and less than the number of the fans driven under the control of the second control signal.
2. The method for controlling a fan assembly according to claim 1, wherein the step of determining that the fan indicated by the first control signal is in the first steady state specifically includes:
determining to send the first control signal, and starting timing;
and determining that the timing duration is greater than or equal to a first duration, and determining that the fan indicated by the first control signal is in a first stable state.
3. The method for controlling a fan assembly according to claim 1, wherein the step of determining that the fan indicated by the third control signal is in the second steady state specifically comprises:
determining to transmit the third control signal and starting timing;
and determining that the timing duration is greater than or equal to a second duration, and determining that the fan indicated by the third control signal is in a second steady state.
4. A control device for a fan assembly, comprising:
a memory having a computer program stored thereon;
a processor executing the computer program to implement the steps of the method of controlling a fan assembly of any of claims 1 to 3.
5. An air conditioner, comprising:
a fan assembly;
the fan assembly control device of claim 4, wherein the fan assembly is coupled to the fan assembly control device.
6. A drive circuit for a fan assembly, the fan assembly including a plurality of fans, the drive circuit comprising:
the shift register is connected with the fans;
a controller connected with the shift register, the controller configured to:
responding to a trigger instruction of switching the fan assembly from a current wind control gear to a target wind control gear, sending a control signal to the shift register,
the control signals comprise a first control signal and a second control signal, so that the shift register drives the fan indicated by the first control signal to operate;
determining that the fan indicated by the first control signal is in a first stable state, and sending the second control signal to the shift register so that the shift register drives the fan indicated by the second control signal to operate;
the number of the fans driven by the shift register under the control of the first control signal is smaller than that of the fans driven by the shift register under the control of the second control signal;
the control appliance is configured to:
determining that the fan indicated by the first control signal is in a first steady state, and sending a third control signal to drive the fan indicated by the third control signal to operate;
determining that the fan indicated by the third control signal is in a second steady state, and sending the second control signal to drive the fan indicated by the second control signal to operate;
wherein the number of the fans driven under the control of the third control signal is greater than the number of the fans driven under the control of the first control signal and less than the number of the fans driven under the control of the second control signal.
7. The drive circuit of a fan assembly of claim 6, wherein the controller is configured to:
determining to send the first control signal to the shift register and starting timing;
and determining that the timing duration is greater than or equal to a first duration, and determining that the fan indicated by the first control signal is in a first stable state.
8. The drive circuit of a fan assembly of claim 6, wherein the controller is configured to:
determining to send the third control signal to the shift register and starting timing;
and determining that the timing duration is greater than or equal to a second duration, and determining that the fan indicated by the third control signal is in a second steady state.
9. The fan assembly drive circuit according to any of claims 6 to 8, further comprising:
the switching devices are correspondingly connected with the fans;
the input end of the driving circuit is connected with the output end of the shift register, the output end of the driving circuit is connected with the control ends of the plurality of switching devices, and the driving circuit is configured to drive the switching devices to act.
10. An air conditioner, comprising:
a fan assembly;
the drive circuit of a fan assembly of any of claims 6 to 9, wherein the fan assembly is connected to the drive circuit of the fan assembly.
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| CN115325658A (en) * | 2022-08-11 | 2022-11-11 | 珠海格力电器股份有限公司 | Signal channel matching method, control device, air conditioning system and storage medium |
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| CA3028218A1 (en) * | 2017-12-21 | 2019-06-21 | Bce Inc. | Smart building agent |
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| CN105180353A (en) * | 2012-04-26 | 2015-12-23 | 中山大洋电机股份有限公司 | Constant wind volume control method for motor and air conditioner fan system |
| US9847660B2 (en) * | 2014-06-04 | 2017-12-19 | International Business Machines Corporation | Managing a picogrid with a computing device |
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Effective date of registration: 20220929 Address after: No. 66, Shanghai Avenue, Jingzhou Development Zone, Jingzhou City, Hubei Province 434099 Patentee after: Hubei Midea Building Technology Co.,Ltd. Address before: 528311 Industrial Road, Penglai Road, Beijiao Town, Shunde District, Guangdong, Foshan Patentee before: GD MIDEA HEATING & VENTILATING EQUIPMENT Co.,Ltd. Patentee before: MIDEA GROUP Co.,Ltd. |