CN205478486U - Air -blower variable frequency control device based on power frequency motor - Google Patents
Air -blower variable frequency control device based on power frequency motor Download PDFInfo
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- CN205478486U CN205478486U CN201620022033.0U CN201620022033U CN205478486U CN 205478486 U CN205478486 U CN 205478486U CN 201620022033 U CN201620022033 U CN 201620022033U CN 205478486 U CN205478486 U CN 205478486U
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Abstract
The utility model relates to an air -blower variable frequency control device based on power frequency motor, including power frequency motor, converter, controller and communication assembly, the converter passes through wire connection with the power frequency motor, and the controller passes through communication assembly and converter control connection, the controller includes memory cell, comparing element, alarm unit, PLC the control unit and detecting element, still be provided with the reactor between converter and power frequency motor, detecting element is connected with the power frequency motor to the actual measurement frequency value that obtains the detection in the power frequency motor is fed back to comparing element with actual measurement current value, air -blower export total blast volume value. Its have simple structure, reasonable in design, degree of automation high, effectively reduce converter motor heating volume, reach automatically regulated in order to realize energy -conserving advantages such as purpose, the frequency of still adjusting the converter through reasonable control has avoided the too high extravagant or underfrequency of the energy that causes of frequency to cause the surge emergence of phenomenon of air -blower.
Description
Technical field
This utility model relates to automatic control technology field, particularly relates to the VFC dress of a kind of aerator based on power frequency motor
Put.
Background technology
What traditional aerator used is all forced-air blast, and the motor of aerator is under a kind of same frequency the state that runs up all the time,
Adjust equipment upper wind door aperture size by means of linkage, that is to say and regulate air quantity by inlet valve；Use this regulation wind
The mode of amount so that the motor of aerator runs with specified slewing rate, causes waste and the loss economically of the energy.Gradually
Gradually, people have employed the motor speed of VFC aerator, but easily causes that the motor feels hot by directly increasing converter
The adverse effects such as amount increase, harmonic wave interference.Thus, research one can regulate blower motor running frequency, is avoided that again drum
Blower motor caloric value increases and the air compressor control device of surge has important Research Significance.
Utility model content
There is above-mentioned deficiency for the motor of aerator in prior art, the purpose of this utility model is: provide a kind of based on work
Frequently the blower variable frequency of motor controls device, and it has simple in construction, reasonable in design, automaticity is high, effectively reduces frequency conversion
Device the motor feels hot amount, reach to be automatically adjusted to realize the advantages such as energy-conservation purpose, also by conservative control regulation converter frequency,
Avoid the too high generation causing energy waste or underfrequency to cause aerator surge phenomenon of frequency.
In order to achieve the above object, this utility model is achieved through the following technical solutions:
A kind of blower variable frequency based on power frequency motor controls device, and this blower variable frequency controls device and includes power frequency motor, frequency conversion
Device, controller and communication part；Wherein, converter is connected by electric wire with power frequency motor, controller by communication part with
Frequency Converter Control connects；Controller includes memory element, comparing unit, alarm unit, PLC control unit and detector unit；
This memory element and detector unit are respectively connecting to comparing unit, comparing unit and alarm unit and are respectively connecting to PLC control unit；
It is additionally provided with reactor between converter and power frequency motor；Blower export total blast volume regulation interval it is provided with in this memory element
Preset value, air quantity decline rate of change preset value and current of electric upper limit preset value, wherein air quantity decline changing value be real-time air quantity with
It is long-pending that air quantity declines rate of change preset value；Detector unit is connected with power frequency motor, and detection obtains the actual measurement frequency of power frequency motor
Rate value and measured current value, blower export total blast volume value, air quantity decline rate of change preset value and feed back to comparing unit, the most single
The preset value of practical frequency Yu memory element is compared and comparative result feeds back to PLC control unit by unit, and PLC controls single
Unit controls the running status of converter according to result of the comparison by communication part.
As the further improvement of technique scheme, described blower variable frequency controls device and also includes being arranged on air compressor control case,
It is additionally provided with pressure controller and interlock switch on this air compressor control case.
As the further improvement of technique scheme, this blower variable frequency controls the aerator quantity of device and is at least 3, and
And tolerance total blast volume is at least 22000m under all aerator normal operating conditions3/ h, the frequency range of this converter is
45.2-50Hz。
As the further improvement of technique scheme, current of electric upper limit preset value is at least 290A；This communication part is CAN
Bus or LIN bus, this alarm device is speaker or light flash device；This blower variable frequency controls device and also includes nothing
Line communications component, described wireless communication components monitors the running status of aerator in real time by wireless network and is fed back to operation
Between.
As the further improvement of technique scheme, this controller also includes the display unit being connected with PLC control unit；
This PLC control unit is additionally provided with timing unit, and this timing unit is used for setting time interval, when PLC control unit is according to this
Between gap periods ground above-mentioned comparative result is depicted as respectively figure, and store it with display unit by memory element
Display.
As the further improvement of technique scheme, this blower variable frequency controls device and also includes temperature sensor, and this temperature passes
Sensor is arranged on power frequency motor, and is connected with detector unit data signal, and this memory element is additionally provided with temperature preset value,
When detector unit receive the temperature sensor observed temperature value that obtains of detection exceed temperature preset value time, alarm unit sends warning
Prompt tone.
Compared with controlling technology with blower motor of the prior art, aerator based on power frequency motor of the present utility model is used to become
Audio-frequency control device and control method thereof have the advantage that
(1) simple in construction, reasonable in design, automaticity is greatly improved, the problem not only solving the waste energy, the most effectively
Solve the generation of blower motor surge phenomenon.
(2) by using tolerance interval, tolerance rate of change, the triple control of current limit, effectively ensure that electric machine frequency automatic
Changing and control, operational reliability is higher；Possessing manual regulatory function while automatically controlling, control mode is the most flexible.
(3) can rationally arrange controlling device according to actual parameter, have a wide range of applications space in the application, when exceeding
During preset value, by the prompting of alarm device, safety is the highest.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation that this utility model blower variable frequency based on power frequency motor controls device.
Accompanying drawing 2 is the operation principle schematic diagram that this utility model blower variable frequency based on power frequency motor controls device.
Detailed description of the invention
Below in conjunction with the accompanying drawings 1-2 blower variable frequency based on power frequency motor to this utility model control device and control method thereof make with
Describe in detail.
A kind of blower variable frequency based on power frequency motor controls device, and this blower variable frequency controls device and includes power frequency motor 1, becomes
Frequently device 2, controller and communication part；Wherein, converter 2 is connected by electric wire with power frequency motor 1, and controller is by logical
News assembly is connected with Frequency Converter Control；Controller includes memory element 3, comparing unit 4, alarm unit 5, PLC control unit
6 and detector unit 7；This memory element and detector unit are respectively connecting to comparing unit, comparing unit and alarm unit and connect respectively
To PLC control unit；Reactor 8 it is additionally provided with between converter and power frequency motor；It is provided with aerator in this memory element
The interval preset value of outlet total blast volume regulation, air quantity decline rate of change preset value and current of electric upper limit preset value, and wherein air quantity declines
Changing value is that real-time air quantity is long-pending with air quantity decline rate of change preset value；Detector unit is connected with power frequency motor, and will detect
Practical frequency value and measured current value, blower export total blast volume value, air quantity to power frequency motor decline rate of change preset value feedback
To comparing unit, the preset value of practical frequency Yu memory element is compared and is fed back to by comparative result PLC control by comparing unit
Unit processed, PLC control unit controls the running status of converter according to result of the comparison by communication part.Described aerator becomes
Audio-frequency control device also includes being arranged on air compressor control case, and this air compressor control case is additionally provided with pressure controller and interlock switch.
This blower variable frequency controls the aerator quantity of device and is at least 3, and the total wind of tolerance under all aerator normal operating conditions
Amount at least 22000m3/ h, the frequency range of this converter is 45.2-50Hz.Current of electric upper limit preset value is at least
290A；This communication part is CAN or LIN bus, and this alarm device is speaker or light flash device；This air blast
Machine frequency-converting control device also includes wireless communication components, and described wireless communication components monitors the fortune of aerator in real time by wireless network
Row state is also fed back to operation room.This controller also includes the display unit 9 being connected with PLC control unit；This PLC
Control unit is additionally provided with timing unit, and this timing unit is used for setting time interval, and PLC control unit is according to this time interval
Periodically above-mentioned comparative result is depicted as respectively figure, and store by memory element and shown with display unit.
This blower variable frequency controls device and also includes temperature sensor, and this temperature sensor is arranged on power frequency motor, and single with detection
Metadata signal connects, and this memory element is additionally provided with temperature preset value, obtains when detector unit receives temperature sensor detection
Observed temperature value when exceeding temperature preset value, alarm unit sends alarm sound.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply this utility model.
These embodiments obviously easily can be made various amendment by person skilled in the art, and described herein the most former
Ought to use in other embodiments without through performing creative labour.Therefore, this utility model is not limited to embodiment here,
Those skilled in the art should according to announcement of the present utility model, the improvement made without departing from this utility model category and amendment
Within protection domain of the present utility model.
Claims (6)
1. a blower variable frequency based on power frequency motor controls device, it is characterised in that: this blower variable frequency controls device and includes power frequency motor (1), converter (2), controller and communication part；Wherein, converter (2) is connected by electric wire with power frequency motor (1), and controller is connected with Frequency Converter Control by communication part；Controller includes memory element (3), comparing unit (4), alarm unit (5), PLC control unit (6) and detector unit (7)；This memory element and detector unit are respectively connecting to comparing unit, comparing unit and alarm unit and are respectively connecting to PLC control unit；Reactor (8) it is additionally provided with between converter and power frequency motor；Being provided with blower export total blast volume in this memory element and regulate interval preset value, air quantity decline rate of change preset value and current of electric upper limit preset value, wherein air quantity declines changing value is that real-time air quantity is long-pending with air quantity decline rate of change preset value；Detector unit is connected with power frequency motor, and detection is obtained the practical frequency value of power frequency motor and measured current value, blower export total blast volume value, air quantity decline rate of change preset value and feed back to comparing unit, the preset value of practical frequency Yu memory element is compared and comparative result feeds back to PLC control unit by comparing unit, and PLC control unit controls the running status of converter according to result of the comparison by communication part.
A kind of blower variable frequency based on power frequency motor the most according to claim 1 controls device, it is characterized in that: described blower variable frequency controls device and also includes being arranged on air compressor control case, and this air compressor control case is additionally provided with pressure controller and interlock switch.
A kind of blower variable frequency based on power frequency motor the most according to claim 1 controls device, it is characterized in that: this blower variable frequency controls the aerator quantity of device and is at least 3, and under all aerator normal operating conditions, tolerance total blast volume is at least 22000m3/ h, the frequency range of this converter is 45.2-50Hz.
A kind of blower variable frequency based on power frequency motor the most according to claim 1 controls device, it is characterised in that: current of electric upper limit preset value is at least 290A；This communication part is CAN or LIN bus, and described alarm unit is speaker or light flash device；This blower variable frequency controls device and also includes wireless communication components, and described wireless communication components is monitored the running status of aerator in real time by wireless network and fed back to operation room.
A kind of blower variable frequency based on power frequency motor the most according to claim 1 controls device, it is characterised in that: this controller also includes the display unit (9) being connected with PLC control unit；This PLC control unit is additionally provided with timing unit, and this timing unit is used for setting time interval, and above-mentioned comparative result is periodically depicted as figure respectively by PLC control unit according to this time interval, and store by memory element and shown with display unit.
A kind of blower variable frequency based on power frequency motor the most according to claim 1 controls device, it is characterized in that: this blower variable frequency controls device and also includes temperature sensor, this temperature sensor is arranged on power frequency motor, and it is connected with detector unit data signal, this memory element is additionally provided with temperature preset value, when detector unit receive the temperature sensor observed temperature value that obtains of detection exceed temperature preset value time, alarm unit sends alarm sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620022033.0U CN205478486U (en) | 2016-01-11 | 2016-01-11 | Air -blower variable frequency control device based on power frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620022033.0U CN205478486U (en) | 2016-01-11 | 2016-01-11 | Air -blower variable frequency control device based on power frequency motor |
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| Publication Number | Publication Date |
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| CN205478486U true CN205478486U (en) | 2016-08-17 |
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| CN201620022033.0U Active CN205478486U (en) | 2016-01-11 | 2016-01-11 | Air -blower variable frequency control device based on power frequency motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465029A (en) * | 2016-01-11 | 2016-04-06 | 北京北排水环境发展有限公司 | Air blower variable-frequency control device based on power frequency motor and control method for air blower variable-frequency control device |
-
2016
- 2016-01-11 CN CN201620022033.0U patent/CN205478486U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465029A (en) * | 2016-01-11 | 2016-04-06 | 北京北排水环境发展有限公司 | Air blower variable-frequency control device based on power frequency motor and control method for air blower variable-frequency control device |
| CN105465029B (en) * | 2016-01-11 | 2017-06-27 | 北京北排水环境发展有限公司 | A kind of blower variable frequency control device and its control method based on power frequency motor |
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| GR01 | Patent grant |