CN107044435A - Determine air quantity intelligent control centrifugal fan - Google Patents
Determine air quantity intelligent control centrifugal fan Download PDFInfo
- Publication number
- CN107044435A CN107044435A CN201610312835.XA CN201610312835A CN107044435A CN 107044435 A CN107044435 A CN 107044435A CN 201610312835 A CN201610312835 A CN 201610312835A CN 107044435 A CN107044435 A CN 107044435A
- Authority
- CN
- China
- Prior art keywords
- transmitter
- measuring
- air quantity
- wheel speed
- differential pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008676 import Effects 0.000 claims abstract description 18
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims abstract 2
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
- F05D2270/3015—Pressure differential pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/306—Mass flow
- F05D2270/3061—Mass flow of the working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/312—Air pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/313—Air temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention provides determining air quantity intelligent control centrifugal fan, including：The atmospheric pressure transmitter for measuring atmospheric pressure in centrifugal fan, the atmospheric temperature transmitter for measuring atmospheric temperature, import and export differential pressure transmitter, the wheel speed transmitter for measuring wheel speed for measuring ventilation blower import and export differential pressure.Also need to match somebody with somebody photo-electric or hall sensing formula speed probe before the wheel speed transmitter, described to be used to measure the atmospheric pressure transmitter of atmospheric pressure, the atmospheric temperature transmitter for measuring atmospheric temperature, import and export the import and export differential pressure transmitter of differential pressure, the wheel speed transmitter for measuring wheel speed while connecting single chip processing module for measuring ventilation blower, the single chip processing module contains a single-chip microcomputer, four analog input channels, an analog output channel and LCDs.The advantage of this patent is：1st, it is cost-effective；2nd, air pipeline is simplified；3rd, installation quality is can ensure that, control accuracy is improved；4th, the occasion for there are special requirement to air quantity or wind speed is particularly suitable for use in, development prospect is good.
Description
Technical field
The present invention relates to centrifugal fan, air quantity operation can be especially arbitrarily designated in the range of certain air quantity
Centrifugal fan.The ventilation blower is applied to the fine ventilation occasion for having particular/special requirement to air quantity or wind speed change.
Background technology
The measurement apparatus of existing ventilation fan delivery is generally the apparatus for measuring air quantity installed additional, conventional air measuring
Device has import current collector, nozzle, orifice plate, Pitot tube, even speed tube etc..First three measurement of discharge device is in fact
It is exactly a pipeline component, certain pressure loss, loss size and pipe can be produced when air flows through pipeline
Shape, the size of road part are relevant, when pipeline component shape, big little makings as defined in standard, flow through
The pressure loss of the part is predictable during certain air capacity.During actual test, pass through measurement
The front and rear differential pressure of current collector, nozzle or orifice plate, by a little theories can inverse go out air mass flow.Pitot tube is a kind of
The specific purpose tool of gas pressure (total head, dynamic pressure, static pressure etc.) in pipeline is measured, its measurable pipeline is utilized
The dynamic pressure (being averaged on same flow area with multimetering) of interior air, then it is average with dynamic pressure calculation
Wind speed, so as to calculate air force.Even speed tube is then the extension of Pitot tube, on same flow area
Arrange that multiple dynamic pressure gaging holes obtain approximate average dynamic pressure.
In these methods, first three can obtain higher measurement accuracy, but the flow field before and after flow measurement device
It is required that it is strict, it is best suited in laboratory.Pitot tube measurement needs the multimetering on same section, uncomfortable
For in Automated condtrol.What even speed tube was measured is approximately averagely dynamic pressure, and it can be waited in the uniform occasion of wind speed
To preferable measurement effect, when flow area wind speed is uneven, its measurement error will be more than 5%.
The measuring method of existing ventilation fan delivery is as follows：Will be to the air quantity of a ventilation blower in engineer applied
Automated condtrol is carried out, first has to measure in its air quantity, foregoing description, import current collector is only limitted to be arranged on
Conduit entrance, it is unrealistic.There is no abundant space to ensure its front and rear even flow field if being measured with nozzle,
And price is higher.The problem of also having identical with nozzle with orifice plate, and its resistance is bigger.Pitot tube is not suitable for
Automatic measurement.The measurement accuracy of even speed tube is low (precision is less than 5% only in less wind speed range).And
And above-mentioned all flow measurement devices will be more or less some pipeline spaces of occupancy, install also not side
Just.
The content of the invention
To solve the above problems, the invention provides a kind of easy for installation, measurement accuracy is high, intelligence degree
High determines air quantity intelligent control centrifugal fan.
That realizes the object of the invention determines air quantity intelligent control centrifugal fan, including：Installed in centrifugation ventilation
Being used in machine measures the atmospheric pressure transmitter of atmospheric pressure, become for measuring the atmospheric temperature of atmospheric temperature
Send device, the import and export differential pressure transmitter of differential pressure imported and exported for measuring ventilation blower, for measuring wheel speed
Wheel speed transmitter.Also need to match somebody with somebody photo-electric or hall sensing formula revolution speed sensing before the wheel speed transmitter
Device, it is described to be used to measure the atmospheric pressure transmitter of atmospheric pressure, the atmospheric temperature for measuring atmospheric temperature
Transmitter, for measure ventilation blower import and export differential pressure import and export differential pressure transmitter, for measuring wheel speed
Wheel speed transmitter connect single chip processing module simultaneously, the single chip processing module is containing a monolithic
Machine, four analog input channels, an analog output channel and LCDs.
Four analog input channels are respectively allocated to four measuring transducers, analog output channel production
Raw analog signal is used to control speed regulator, wherein, it is alternating current generator for prime mover, speed regulator is to become
Frequency device, direct current generator in this way, output analog signal can direct controlled motor rotating speed.
The single chip processing module is also associated with LCDs, and the LCDs can pass through side
Setting key-press input specify air quantity Qi and Boiler pressure control precision kq, can also show the real-time air quantity Qa of blower fan,
Import and export the parameter values such as differential pressure dP, wheel speed n.
The advantage of this patent is：
1st, it is cost-effective, it is typically all finishing as the apparatus for measuring air quantity of measurer in the prior art
Form, cost is higher, exemplified by simplest even speed tube, the unit price of the diameters of φ 400 is 2000 yuan or so, spray
The price of mouth is higher；
2nd, air pipeline is simplified, if prior art surveys air quantity using additional apparatus for measuring air quantity, air quantity is surveyed
Amount device need to be inserted into ventilation shaft, and should improve the import and export flow field surveyed before and after air quantity, such as
It is necessary that the auxiliary pipe fittings such as flow straightening grid to be also installed, after this patent, without considering these factors；
3rd, installation quality is can ensure that, control accuracy is improved.Equipment is installed generally by installation company
Contract, it is professional to be installed for equipment, but is unprofessional to the installation of apparatus for measuring air quantity, it is impossible to really
The reasonability for surveying air quantity is protected, is had an impact to air measuring precision.Using air measuring after this patent logical
Blower interior is carried out, and installation quality is controlled by ventilation blower inside plants, it can be ensured that air measuring precision；
4th, the existing more application of ventilating system of automatic regulation is made to parameters such as temperature, humidity at present,
The existing selected works report of Intelligent ventilating machine of closed loop intelligent control, but in the market are realized to parameters such as temperature, humidity
Also rarely found, up to the present the Intelligent ventilating machine for realizing closed loop intelligent control to air quantity or wind speed does not have selected works also
Report.
The patent is particularly suitable for use in the occasion for having special requirement to air quantity or wind speed, is plugged a gap as a
Product, should there is considerable economic benefit and social benefit, and development prospect is good.
Brief description of the drawings
Fig. 1 is the structural representation for determining air quantity intelligent control centrifugal fan of the invention.
Embodiment
As shown in figure 1, the present invention's determines air quantity intelligent control centrifugal fan, including：Installed in centrifugation
Being used in ventilation blower measures the atmospheric pressure transmitter of atmospheric pressure, the big temperature for measuring atmospheric temperature
Transmitter is spent, the import and export differential pressure transmitter of differential pressure is imported and exported for measuring ventilation blower, is turned for measuring impeller
The wheel speed transmitter of speed.Also need to match somebody with somebody photo-electric or hall sensing formula rotating speed before the wheel speed transmitter
Sensor, it is described to be used to measure the atmospheric pressure transmitter of atmospheric pressure, the air for measuring atmospheric temperature
Temperature transmitter, for measure ventilation blower import and export differential pressure import and export differential pressure transmitter, for measuring impeller
The wheel speed transmitter of rotating speed connects single chip processing module simultaneously, and the single chip processing module contains one
Single-chip microcomputer, four analog input channels, an analog output channel and LCDs.
Four analog input channels are respectively allocated to four measuring transducers, analog output channel production
Raw analog signal is used to control speed regulator, wherein, it is alternating current generator for prime mover, speed regulator is to become
Frequency device, direct current generator in this way, output analog signal can direct controlled motor rotating speed.
The single chip processing module is also associated with LCDs, and the LCDs can pass through side
Setting key-press input specify air quantity Qi and Boiler pressure control precision kq, can also show the real-time air quantity Qa of blower fan,
Import and export the parameter values such as differential pressure dP, wheel speed n.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to this hair
Bright scope is defined, under the premise of design spirit of the present invention is not departed from, this area ordinary skill technology people
Various modifications and improvement that member makes to technical solution of the present invention, all should fall into claims of the present invention true
In fixed protection domain.
Claims (4)
1. determine air quantity intelligent control centrifugal fan, it is characterised in that including：Installed in centrifugation ventilation
Being used in machine measures the atmospheric pressure transmitter of atmospheric pressure, become for measuring the atmospheric temperature of atmospheric temperature
Send device, the import and export differential pressure transmitter of differential pressure imported and exported for measuring ventilation blower, for measuring wheel speed
Wheel speed transmitter.
2. according to claim 1 determine air quantity intelligent control centrifugal fan, it is characterised in that
Also need to match somebody with somebody photo-electric or hall sensing formula speed probe before the wheel speed transmitter, it is described to be used to measure
The atmospheric pressure transmitter of atmospheric pressure, the atmospheric temperature transmitter for measuring atmospheric temperature, for measuring
Ventilation blower imports and exports import and export differential pressure transmitter, the wheel speed transmitter for measuring wheel speed of differential pressure
Single chip processing module is connected simultaneously.
3. according to claim 2 determine air quantity intelligent control centrifugal fan, it is characterised in that
The single chip processing module is led to containing a single-chip microcomputer, four analog input channels, an analog outputs
Road and LCDs, four analog input channels are respectively allocated to four measuring transducers, simulation
The analog signal that amount output channel is produced is used to control speed regulator, wherein, it is alternating current generator for prime mover,
Speed regulator is frequency converter, in this way direct current generator, and output analog signal can direct controlled motor rotating speed.
4. according to claim 2 determine air quantity intelligent control centrifugal fan, it is characterised in that
The single chip processing module is also associated with LCDs, and the LCDs can setting by side
Put key-press input and specify air quantity Qi and Boiler pressure control precision kq, the real-time air quantity Qa of blower fan can also be shown, entered
Export the parameter values such as differential pressure dP, wheel speed n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312835.XA CN107044435A (en) | 2016-05-13 | 2016-05-13 | Determine air quantity intelligent control centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312835.XA CN107044435A (en) | 2016-05-13 | 2016-05-13 | Determine air quantity intelligent control centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107044435A true CN107044435A (en) | 2017-08-15 |
Family
ID=59542663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610312835.XA Pending CN107044435A (en) | 2016-05-13 | 2016-05-13 | Determine air quantity intelligent control centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107044435A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113939658A (en) * | 2019-06-13 | 2022-01-14 | 施乐百有限公司 | Ventilator and method for determining the flow rate of a medium moved by a ventilator |
| CN114754019A (en) * | 2022-04-08 | 2022-07-15 | 中建三局第三建设工程有限责任公司 | Fixed air volume control method and system based on impeller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2352533A (en) * | 1999-07-12 | 2001-01-31 | Danfoss As | Method for regulating a delivery variable of a pump |
| EP1211424A2 (en) * | 2000-11-22 | 2002-06-05 | Seiko Instruments Inc. | Vacuum pump |
| CN101710030A (en) * | 2009-04-29 | 2010-05-19 | 长沙学院 | System and method for testing performance of cross flow fan |
| CN202013212U (en) * | 2011-03-29 | 2011-10-19 | 东北电力科学研究院有限公司 | Air quantity calculating system of variable speed or constant speed fan |
| CN203630587U (en) * | 2013-11-21 | 2014-06-04 | 西安大昱光电科技有限公司 | Automatic monitoring system for coal mine main ventilation machine |
-
2016
- 2016-05-13 CN CN201610312835.XA patent/CN107044435A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2352533A (en) * | 1999-07-12 | 2001-01-31 | Danfoss As | Method for regulating a delivery variable of a pump |
| EP1211424A2 (en) * | 2000-11-22 | 2002-06-05 | Seiko Instruments Inc. | Vacuum pump |
| CN101710030A (en) * | 2009-04-29 | 2010-05-19 | 长沙学院 | System and method for testing performance of cross flow fan |
| CN202013212U (en) * | 2011-03-29 | 2011-10-19 | 东北电力科学研究院有限公司 | Air quantity calculating system of variable speed or constant speed fan |
| CN203630587U (en) * | 2013-11-21 | 2014-06-04 | 西安大昱光电科技有限公司 | Automatic monitoring system for coal mine main ventilation machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113939658A (en) * | 2019-06-13 | 2022-01-14 | 施乐百有限公司 | Ventilator and method for determining the flow rate of a medium moved by a ventilator |
| CN113939658B (en) * | 2019-06-13 | 2024-03-22 | 施乐百有限公司 | Ventilator and method for determining a flow of a medium moved by a ventilator |
| CN114754019A (en) * | 2022-04-08 | 2022-07-15 | 中建三局第三建设工程有限责任公司 | Fixed air volume control method and system based on impeller |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170815 |