CN202455312U - System for controlling fan motor - Google Patents
System for controlling fan motor Download PDFInfo
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- CN202455312U CN202455312U CN201220005943XU CN201220005943U CN202455312U CN 202455312 U CN202455312 U CN 202455312U CN 201220005943X U CN201220005943X U CN 201220005943XU CN 201220005943 U CN201220005943 U CN 201220005943U CN 202455312 U CN202455312 U CN 202455312U
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- blower motor
- voltage
- control
- microprocessor
- controller
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
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Abstract
The utility model provides a system for controlling a fan motor, which is used for solving the problems of great energy consumption and instability in operation of the fan motor in the prior art. The system comprises a power supply input port, a controller, a power supply output port and an alternating current voltage regulation circuit, wherein the controller is used for inquiring a pre-saved power factor-control voltage relation table to get a control voltage target value, and controlling the alternating current voltage regulation circuit to transmit electric energy from the power supply input port to the fan motor through the power supply output port according to the target value. By adopting the technical scheme provided by the utility model, the system is favorable for enabling the fan motor to always operate in an optimal operation state, thereby achieving the purposes of saving the electric energy and prolonging the service life of equipment.
Description
Technical field
The utility model relates to a kind of system that controls motor, relates in particular to a kind of system that controls blower motor.
Background technology
Blower fan need often leave, stop operation according to the requirement of application scenario, and operating load, the blowing amount size of blower fan also needs to adjust in real time according to actual needs in running.
At present; The electric machine control system that drives blower fan mainly uses the control system of traditional asynchronous motor; And the power output of normal asynchronous is constant, and general long operational time, and the action frequency of starting shooting, shut down is not frequent; Common Induction Motor Control System inside is provided with timer and contactor, can connect break contact according to the starting of setting motor, dwell time operation contactor.Some control system also has protective device, monitors through the electric current and voltage to motor in service, when exceeding its rated voltage, current value, avoids motor to damage thereby send the operation of breaking off contacts of contactor.
In the process that realizes the utility model; The inventor finds that the control system of blower motor is not that work characteristics according to blower motor designs; Can't be according to the size of fans load and adjust motor operating state automatically; Thereby cause waste of electric energy, it is stable that the operating state of blower motor can not keep.
For the problem that exists in the correlation technique, there is not technical scheme to solve in the prior art as yet.
Summary of the invention
The main purpose of the utility model provides a kind of system that makes blower motor, and blower motor consumes energy greatly in the prior art to solve, the problem of fluctuation of service.
To achieve these goals; An aspect according to the utility model provides a kind of system that controls blower motor, and this system comprises: power input mouth, controller, output port of power source and AC voltage adjusting circuit; Wherein, AC voltage adjusting circuit is serially connected between power input mouth and the output port of power source, and is connected with controller, is used under the control of controller, will transferring to blower motor through output port of power source from the electric energy of power input mouth; Controller is connected with AC voltage adjusting circuit; Be used for calculating in real time the power factor of blower motor; The power factor that inquiry is preserved in advance according to power factor draws the control voltage-target with control voltage relationship table, transmits control signal to AC voltage adjusting circuit according to the control voltage-target.
Further, controller comprises measuring circuit, analog to digital converter, memory and microprocessor, and wherein, measuring circuit is used for measuring in real time the output voltage and the output current of output port of power source; Analog to digital converter connects measuring circuit and microprocessor, is used for converting output voltage and output current into digital signal and is sent to microprocessor then; Memory connects microprocessor, is used to preserve power factor and control voltage relationship table; Microprocessor; Be used for calculating the power factor of blower motor according to digital signal; And draw the control voltage-target, and transmit control signal to AC voltage adjusting circuit according to the control voltage-target according to power factor of preserving in the power factor consults memory and control voltage relationship table.
Further, controller also comprises interface is set, and interface is set connects microprocessor, is used to receive and preserve the blower motor type that needs are controlled; Microprocessor also comprises the parts that are used for obtaining from power factor and control voltage relationship table according to power factor the control voltage-target of the blower motor type of controlling corresponding to needs.
Further, the parts that interface also comprises the parameter that is used to receive blower motor starting time and starting voltage are set; Microprocessor also comprises the parts that are used for having sent to AC voltage adjusting circuit according to starting time and starting voltage dynamic control signal.
Further, interface is set and also comprises the parts that are used to receive and preserve blower motor protection parameter; Microprocessor also comprises the parts that are used for judging according to blower motor protection parameter according to digital signal the operating state of blower motor.
Further, the system of this control blower motor also comprises first contactor, and first end of the contact of first contactor connects power supply, and second end connects the power input mouth, and control end connects microprocessor; Microprocessor comprises the operating state that is used for judging according to digital signal blower motor, and the parts that transmit control signal to the control end of first contactor according to the operating state of blower motor.
Further, the system of this control blower motor also comprises warning device, connects microprocessor, and microprocessor also comprises the parts that are used for sending to warning device according to the operating state of blower motor alarm signal.
Further, AC voltage adjusting circuit comprises: first thyristor of reverse parallel connection and second thyristor, the control end of the control end of first thyristor and second thyristor is connected controller respectively.
Further, AC voltage adjusting circuit comprises bidirectional thyristor, and the control end of bidirectional thyristor connects controller.
Further, the system of this control blower motor also comprises second contactor, and first end of the contact of second contactor connects the power input mouth, and second end connects output port of power source, and control end connects microprocessor; Microprocessor comprises the parts of the operating state that is used to detect controller and AC voltage adjusting circuit and is used for sending to the control end of second contactor according to the operating state of controller and AC voltage adjusting circuit the parts of control signal.
Technical scheme according to the utility model; The working voltage that the system of control blower motor monitors blower motor in real time and running current are to reach the load variations situation of monitoring blower motor; Adjust the working voltage of blower motor in real time according to this load variations situation, blower motor is operated under the best running status all the time, save electric energy and the purpose that prolongs service life of equipment thereby reach; Avoid occurring the motor overheating that Fraquent start causes; The inefficient situation of utilization of power during light running, in addition, the system of the control blower motor of the utility model also provides the integrated protection function of faults such as overvoltage to blower motor, under-voltage, overload, overcurrent, phase shortage; Can guarantee that blower motor is stable, in the energy-saving run, chance failure monitored.
Description of drawings
Figure of description is used to provide the further understanding to the utility model, constitutes the application's a part, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the sketch map according to the method for the control blower motor of the utility model embodiment;
Fig. 2 is according to the blower motor operating voltage of the utility model embodiment and the sketch map of operating current;
Fig. 3 is the schematic representation of apparatus according to the control blower motor of the utility model embodiment;
Fig. 4 is the sketch map according to the system of the control blower motor of the utility model embodiment;
Fig. 5 is the sketch map according to system's middle controller of the control blower motor of the utility model embodiment.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
Fig. 1 is the sketch map according to the method for the control blower motor of the utility model embodiment, and is as shown in Figure 1, and this method mainly comprises the steps:
Step S11: the real-time input voltage and real-time input current that obtain blower motor;
Step S13: the power factor that draws blower motor according to real-time input voltage and real-time input current;
Step S15: the power factor that inquiry is preserved in advance according to power factor draws the control voltage-target with control voltage relationship table;
Step S17: the input voltage of controlling blower motor according to the control voltage-target.
Blower motor belongs to a kind of inductive load, and in the process that realizes the utility model, utility model people discovers that the power-factor angle of blower motor is with perceptual load size variation.Fig. 2 is according to the blower motor operating voltage of the utility model embodiment and the sketch map of operating current, and in the drawings, 22 is the blower motor operating voltage, 24 operating currents when being blower motor full-load run, 26 operating currents when being blower motor no-load running.As shown in Figure 2, the power-factor angle θ when blower motor is unloaded
2Be that power factor is about 0.17 about 80 °; And its power-factor angle of full load θ
1Be about 30 °, power factor is about 0.87, therefore can confirm the payload of blower motor according to power factor.Further can confirm the optimal values of different capacity factor corresponding work voltage according to test, and the corresponding relation of power factor and operating voltage optimal values is made form, just make power factor and control voltage relationship table.When blower motor is in running status; Draw power factor through electric current and voltage; And the inquiry power factor obtains the corresponding optimum operating voltage of loading with control voltage relationship table; Control the input voltage of blower motor according to this optimum operating voltage, thereby make blower motor be in best operating state all the time.
Can comprise the power factor of polytype blower motor and the corresponding relation between the control voltage in power factor and the control voltage relationship table; Step S15 can comprise the blower motor type that preservation need be controlled, and from power factor and control voltage relationship table, obtains the control voltage-target corresponding to the blower motor type of needs control according to power factor.
The model of blower motor, type difference; Its power factor is also different with the corresponding relation of the optimal values of operating voltage; Can the power factor of the dissimilar blower motors corresponding relation with the optimal values of operating voltage be kept at a power factor and control the voltage relationship table through test; Before controlling, confirm the type of blower motor, from power factor and control voltage relationship table, obtain the power factor and the voltage corresponding relation of the type blower motor.
The method of this control blower motor can also comprise, according to the operating state of the real-time input voltage of blower motor with the blower motor of input current judgement in real time; According to the operating state output alarm signal of blower motor or the instruction of cutting off the electricity supply.For example, operating voltage surpasses 30% o'clock of blower motor rated voltage, can assert that blower motor is in overvoltage condition; Operating voltage is lower than 30% o'clock of rated voltage, can assert that blower motor is in under-voltage condition; Load current surpasses when setting electric current; Can assert that blower motor is in over-current state, load current surpasses set overload current in the time of 1 minute, can assert that blower motor is in overload; The situation that a phase or two phase voltages disappear occurs, can think that blower motor is in non-full-phase state.According to the different anomalies state, the instruction of selecting output alarm signal or cutting off the electricity supply.
Fig. 3 is the schematic representation of apparatus according to the control blower motor of the utility model embodiment, and is as shown in Figure 3, and this device 30 mainly comprises: acquisition module 31 is used to obtain the real-time input voltage of blower motor and input current in real time; Power factor is calculated module 32, is used for drawing according to real-time input voltage and real-time input current the power factor of blower motor; Enquiry module 33 is used for the power factor that inquiry is preserved in advance according to power factor and draws the control voltage-target with control voltage relationship table; Voltage control module 34 is used for controlling the input voltage of blower motor according to controlling voltage-target.
The device 30 of this control blower motor also comprises preserves the module (not shown); Be used to preserve power factor and control voltage relationship table, this power factor and control voltage relationship table comprise the power factor of polytype blower motor and the corresponding relation between the control voltage; Enquiry module 33 can also be used for: the blower motor type of preserving needs control; From power factor and control voltage relationship table, obtain control voltage-target according to power factor corresponding to the blower motor type of needs control.
The device 30 of this control blower motor can also comprise: operating state judge module 35 is used for according to the operating state of the real-time input voltage of blower motor with the blower motor of input current judgement in real time; Guard signal output module 36 is used for according to the operating state output alarm signal of blower motor or the instruction of cutting off the electricity supply.
Fig. 4 is the sketch map according to the system of the control blower motor of the utility model embodiment, and is as shown in Figure 4, and this system 40 comprises: power input mouth 43, controller 46, output port of power source 48 and AC voltage adjusting circuit 45, wherein,
AC voltage adjusting circuit 45 is serially connected between power input mouth 43 and the output port of power source 48, and is connected with controller 46, is used under the control of controller 46, will transferring to blower motor 49 through output port of power source 48 from the electric energy of power input mouth 43;
Fig. 5 is the sketch map according to system's middle controller of the control blower motor of the utility model embodiment, and is as shown in Figure 5, and controller 46 comprises measuring circuit 461, analog to digital converter 462, memory 464 and microprocessor 463, wherein,
Analog to digital converter 462 connects measuring circuit 461 and microprocessor 463, is used for converting output voltage and output current into digital signal and is sent to microprocessor 463 then;
Controller can also comprise interface 465 is set, and interface 465 is set connects microprocessors 463, is used to receive and preserve the blower motor type that needs are controlled; Microprocessor 463 also comprises the parts that from power factor and control voltage relationship table, obtain the control voltage-target of the blower motor type of controlling corresponding to needs according to power factor.
The parts that interface 465 can also comprise the parameter that is used to receive blower motor starting time and starting voltage are set; Microprocessor 463 also comprises the parts that are used for having sent to AC voltage adjusting circuit according to starting time and starting voltage dynamic control signal; Do not carry out control of soft and when directly applying the rated voltage starting in blower motor 49 starting; Starting current possibly reach 4～7 times of rated current; When frequently starting, overcurrent can cause motor overheating, can cause the blower motor compromised quality even burn out motor when serious.Situation about using according to the scene such as the frequency of starting etc., can be preserved starting time and starting voltage through interface is set, and according to this starting time and starting voltage slow start, the harm of avoiding starting current to cause.
The system 40 of this control blower motor comprises that also first end of the contact of first contactor, 42, the first contactors 42 connects the control end connection microprocessor 463 that power supply 41, the second ends connect power input mouth 43, the first contactors 42; Microprocessor 463 also comprises the parts that transmit control signal to the control end of first contactor 42 according to the operating state of blower motor.When catastrophe failure such as overvoltage, the phase failure occurring, microprocessor 463 can send the control signal of deenergization, and the contact of first contactor 42 is broken off; Make blower motor 49 deenergizations; Thereby avoid serious consequence, under the situation of normal operation, the contact of first contactor 42 is normally closed.
The system 40 of this control blower motor also comprises warning device 47, and this warning device 47 connects microprocessor 463, and microprocessor 463 also comprises the parts that are used for sending to warning device 47 according to the operating state of blower motor 49 alarm signal.This warning device can comprise audible alarm unit, light alarming device, remote alarming device etc., generic failure such as under-voltage, when overload occur, and microprocessor 463 can send alarm signal.
AC voltage adjusting circuit 45 can comprise: first thyristor of reverse parallel connection and second thyristor, the control end of the control end of first thyristor and second thyristor is connected controller 46 respectively.
AC voltage adjusting circuit 45 also can comprise bidirectional thyristor, and the control end of bidirectional thyristor connects controller 46.Obviously AC voltage adjusting circuit 45 can also use other electronic power conversion circuit, hands over orthogonal convertor circuit etc. such as IGBT.
The system 40 of this control blower motor comprises that also first end of the contact of second contactor, 44, the second contactors 44 connects the control end connection controller 46 that power input mouth 43, the second ends connect output port of power source 48, the second contactors 44; Controller 46 comprises the parts of the operating state that is used to detect controller 46 self and AC voltage adjusting circuit 45 and is used for sending to the control end of second contactor 44 according to the operating state of controller and AC voltage adjusting circuit the parts of control signal.Occur under the unusual perhaps situation that blower motor need not be controlled in controller 46 and AC voltage adjusting circuit 45 self checks; Controller 46 can send the control signal of closed second contactor 44 contacts; Electric energy is directly supplied power to blower motor 49 through second contactor 44; Being provided with like this can overhaul or change AC voltage adjusting circuit 45 and controller 46 in the situation that does not influence blower motor 49 work.Under the state of normal operation, often open the contact of second contactor 44.
Technical scheme according to the utility model; The working voltage that the system of control blower motor monitors blower motor in real time and running current are to reach the load variations situation of monitoring blower motor; Adjust the working voltage of blower motor in real time according to this load variations situation, blower motor is operated under the best running status all the time, save electric energy and the purpose that prolongs service life of equipment thereby reach; Avoid occurring the motor overheating that Fraquent start causes; The inefficient situation of utilization of power during light running, in addition, the system of the control blower motor of this utility model also provides the integrated protection function of faults such as overvoltage to blower motor, under-voltage, overload, overcurrent, phase shortage; Can guarantee that blower motor is stable, in the energy-saving run, chance failure monitored.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. a system that controls blower motor is characterized in that, comprises power input mouth, controller, output port of power source and AC voltage adjusting circuit, wherein,
Said AC voltage adjusting circuit is serially connected between said power input mouth and the said output port of power source; And be connected with said controller, be used under the control of said controller, will transferring to blower motor through said output port of power source from the electric energy of said power input mouth.
2. system according to claim 1 is characterized in that said controller comprises measuring circuit, analog to digital converter, memory and microprocessor, wherein,
Said measuring circuit is used for measuring in real time the output voltage and the output current of said output port of power source;
Said analog to digital converter connects said measuring circuit and said microprocessor, is used for converting said output voltage and output current into digital signal and is sent to said microprocessor then;
Said memory connects said microprocessor, is used to preserve power factor and control voltage relationship table;
Said microprocessor; Be used for calculating the power factor of blower motor according to said digital signal; And draw the control voltage-target, and transmit control signal to said AC voltage adjusting circuit according to said control voltage-target according to said power factor of preserving in the said power factor consults memory and control voltage relationship table.
3. system according to claim 2 is characterized in that,
Said controller comprises also interface is set that the said interface that is provided with connects said microprocessor, is used to receive and preserve the blower motor type of needs control;
Said microprocessor also comprises the parts that are used for obtaining from said power factor and control voltage relationship table according to said power factor the control voltage-target of the blower motor type of controlling corresponding to said needs.
4. system according to claim 3 is characterized in that,
Said the parts that interface also comprises the parameter that is used to receive blower motor starting time and starting voltage are set;
Said microprocessor also comprises the parts that are used for having sent to said AC voltage adjusting circuit according to said starting time and starting voltage dynamic control signal.
5. system according to claim 3 is characterized in that,
The said interface that is provided with also comprises the parts that are used to receive and preserve blower motor protection parameter;
Said microprocessor also comprises the parts that are used for judging according to said blower motor protection parameter according to said digital signal the operating state of said blower motor.
6. system according to claim 5 is characterized in that, also comprises first contactor,
First end of the contact of said first contactor connects power supply, and second end connects said power input mouth, and control end connects said microprocessor;
Said microprocessor also comprises and is used for the parts that transmit control signal to the control end of said first contactor according to the operating state of said blower motor.
7. system according to claim 6 is characterized in that, also comprises warning device, connects said microprocessor, and said microprocessor also comprises the parts that are used for sending to warning device according to the operating state of said blower motor alarm signal.
8. according to each described system in the claim 1 to 7; It is characterized in that; Said AC voltage adjusting circuit comprises: first thyristor of reverse parallel connection and second thyristor, the control end of the control end of said first thyristor and second thyristor is connected said controller respectively.
9. according to each described system in the claim 1 to 7, it is characterized in that said AC voltage adjusting circuit comprises bidirectional thyristor, the control end of said bidirectional thyristor connects said controller.
10. according to each described system in the claim 1 to 7, it is characterized in that, also comprise second contactor,
First end of the contact of said second contactor connects said power input mouth, and second end connects said output port of power source, and control end connects said controller;
Said controller also comprises the parts of the operating state that is used to detect said controller and said AC voltage adjusting circuit and is used for sending to the control end of said second contactor according to the operating state of said controller and said AC voltage adjusting circuit the parts of control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220005943XU CN202455312U (en) | 2012-01-06 | 2012-01-06 | System for controlling fan motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220005943XU CN202455312U (en) | 2012-01-06 | 2012-01-06 | System for controlling fan motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202455312U true CN202455312U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220005943XU Expired - Lifetime CN202455312U (en) | 2012-01-06 | 2012-01-06 | System for controlling fan motor |
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| CN (1) | CN202455312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522946A (en) * | 2012-01-06 | 2012-06-27 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| CN109617500A (en) * | 2018-12-14 | 2019-04-12 | 北京大德广源石油技术服务有限公司 | Electricity-saving control device |
-
2012
- 2012-01-06 CN CN201220005943XU patent/CN202455312U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522946A (en) * | 2012-01-06 | 2012-06-27 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| CN102522946B (en) * | 2012-01-06 | 2015-06-10 | 神华集团有限责任公司 | Method, device and system for controlling fan motor |
| CN109617500A (en) * | 2018-12-14 | 2019-04-12 | 北京大德广源石油技术服务有限公司 | Electricity-saving control device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
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| CX01 | Expiry of patent term |