CN110439840A - Highly reliable operation number motor system for blower fan system - Google Patents
Highly reliable operation number motor system for blower fan system Download PDFInfo
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- CN110439840A CN110439840A CN201910723428.1A CN201910723428A CN110439840A CN 110439840 A CN110439840 A CN 110439840A CN 201910723428 A CN201910723428 A CN 201910723428A CN 110439840 A CN110439840 A CN 110439840A
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- Prior art keywords
- motor
- blower fan
- redundancy
- fan system
- highly reliable
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The present invention provides a kind of highly reliable operation number motor system for blower fan system, blower fan system of the present invention possesses redundancy motor array；Wherein, redundancy motor array is made of X motor, and wherein X is the natural number not less than 2；Each motor is electromechanical assembled unit, the digital frequency conversion drive control circuit including motor body and with communication function, and building form can be integrated, is also possible to split connected；Usually it is arranged with parallel way between each motor, special circumstances can also be arranged in series.X motor according to it is scheduled take turns to operate the period or according to preset assembled scheme operate, so that keeping communication between the X digital Frequency Drive Control circuit to work independently, to identify the motor for being in function normal condition in redundancy motor array in real time, and auto negotiation selects the motor as host node from the motor in function normal condition according to predetermined period or presupposed solution；Requirement of the operator to blower fan system is inputted from the human-computer interaction interface or control panel of blower fan system, is converted into operating instruction by control circuit, host node motor is operated according to operating instruction, achievees the purpose that reliably working.
Description
Technical field
The present invention relates to electro-mechanical arts, and in particular to a kind of highly reliable operation number motor system for blower fan system.
Background technique
" motor " is the transliteration of English motor, as motor, engine.Conventional motor is broadly divided into two major classes,
One kind is brush motor, and one kind is brushless motor.
For brush motor revolving speed substantially not above 30000 revs/min, such as 775 motors are the big torsions of the high revolving speed of double ball bearing
Power d.c. motor, about 22000 revs/min of no-load speed, some 380 motor rotary speeds of model plane reach 29000 revs/min.There is brush
Between the commutator and brush of motor, every circle will divide, close alternately contact repeatedly.Commutator technique requires height, and has uninterrupted
Friction, so brush using the pure graphite containing self-lubricating effect or graphitiferous composite material to reduce attrition, but
Abrasion necessarily occurs.Therefore brush motor maintenance is not only very troublesome but also not can avoid, and in addition commutation process can generate electrical fire
Flower, cannot be used in inflammable and explosive Deng places.Therefore there are many use upper limitation.For a long time, brushed DC motor is excellent with its
Good operation characteristic is widely used in motion control field, but due to mechanically being commutated using brush,
Thus there are mechanical frictions, thus bring noise, spark, radio interference and the service life is short, revolving speed can not be very high fatal
Weakness.
Since the carbon brush that brush motor uses is very soft, so itself is easily consumed, in addition being possible to when operation because of pressure unevenness
There is accident, external foreign matter is there is a possibility that carbon brush poor contact, so multiple faults phenomenon caused by the design defect of brush motor
It is difficult satisfactorily to control.Mechanical switch mode based on this mutual CONTACT WITH FRICTION by moving parts, inborn design
Defect is not being not that the improvement such as carbon brush ingredient, elastic component can be eliminated.
Brushless motor be also in, the slow-speed of revolution it is in the majority, the high-power brushless motor for being known as " violence motor " individually certainly also has
Reach 100,000 revs/min, such as certain external three-phase brushless cleaner motors.Certainly, motor in those early years, when height operates
When, there is the situation that high noise, service life are short, stability is poor.Brushless motor has evaded many defects of brush motor, abandons machinery
The reversing mechanism of formula makes maintenance become simple, without " open fire " make with environmental restrictions relax many, and volume ratio has
Brush motor reduces, and service life is opposite to extend.Brushless motor there are also good speed adjustment features, it is adjustable turn to, operational efficiency is high the advantages that.
While old Resolving probiems, new problem is produced.Specifically, due to using electronic commutation technology, cost is improved
；Since electronic component largely uses, automatically controlled failure occurs: dust stratification be easy to cause short circuit also to influence heat dissipation, and overheat is easy
Electrolytic capacitor failure is caused also to be easy to cause semiconducting behavior abnormal.
It is current more and more using brushless motor to demanding device systems.Brushless motor outstanding advantages are exactly to cancel
The polarity of the carbon brush of mechanical switch mode, magnetic field carries out digital switching by the microprocessor on airborne power supply electronic circuit.
While brushless motor eliminates mechanical switch disadvantage, a new disadvantage is also brought.Electronic component also will appear unstable, spy
It is not that relay or electronic switch, electrolytic capacitor are easily damaged, in addition with the promotion of power density, motor windings and bearing
Excessive problem of generating heat becomes seriously, and with greatly improving for revolving speed, the degree of eccentricity is slightly larger to can bring about the big the problem of of going here and there.Match
Part failure is significantly improved with high revolving speed incidence.When accessory failure occurs, it is normal how whole equipment system guarantees to continue
Work becomes core link.
Especially novel super-high speed motor, small in size, revolving speed is high, drive circuit is relative complex, and component is more, power consumption
Greatly, difficult, the reliability decreases that radiate of generating heat are caused, long-play is extremely difficult more.Superelevation speed motor, especially business use or
Industrial applicability and the superelevation speed motor for needing continuous work, once strike, it is easy to cause user's experience sense poor, maintenance cost
Also it remains high；Meanwhile in some utilizations that will appear indirect loss (such as blood extracorporeal circulation equipment), it is also possible to bring nothing
The loss that method is retrieved.Therefore, the motor operation scheme of high reliability becomes urgent society need.
After Britain's dyson limited develops digital motor, motor enters a new developing stage.Currently, go out on the market
The pretty good digital motor of some performances is showed.The advantages of digital motor is, volume is smaller, weight is lighter, revolving speed is higher, noise more
It is low, current most common application be the high wind pressure of Wind Volume that fan blade and motor become one blower.
The shortcomings that digital motor, is also apparent, it be still can not long time continuous working, especially in feelings at full capacity
Under condition, stream time is also shorter than some outstanding conventional motors.
It on the one hand is the general character that high-speed motor all has that the service life is short, stability is poor as widely used power source, it is another
Aspect is to need high-performance, long-life, high stable, power resources easy to maintain again in the market, this just needs an overall cost
It reduces, the raised technical solution of social benefit and operating system.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of overall cost for drawbacks described above exists in the prior art
Reduction, high-performance, long-life, high stable, the highly reliable operation number motor system for blower fan system easy to maintain.
According to the present invention, a kind of highly reliable operation number motor system for blower fan system is provided, comprising: redundancy horse
Up to array；Wherein, redundancy motor array is made of X motor, and wherein X is the natural number not less than 2；Each motor includes electricity
Motivation main body and digital frequency conversion drive control circuit with communication function, building form can be it is integrated, can also be with
It splits connected；Usually it is arranged with parallel way between each motor, special circumstances can also be arranged in series.X motor according to
Scheduled take turns to operate or operates the period according to preset assembled scheme, so that the X number frequency conversion drive control to work independently
Communication is kept between circuit processed, so that the motor that function normal condition is in redundancy motor array is identified in real time, and according to
Predetermined period or the presupposed solution auto negotiation from the motor in function normal condition select the motor as host node；Operation
Requirement of the person to blower fan system is inputted from the human-computer interaction interface or control panel of blower fan system, is converted into running by control circuit
Instruction, host node motor are operated according to operating instruction, achieve the purpose that reliably working.
Preferably, each motor in redundancy motor array has unique numeric address for identification.
Preferably, the highly reliable operation number motor system for blower fan system further includes for acquiring each motor
Temperature temperature sensor system.
It preferably, include: basis from the step of selecting the motor as host node is negotiated in normally functioning motor
The collected each motor temperature of temperature sensor system and/or revolving speed select the motor as host node.
According to the present invention, a kind of highly reliable operation number motor system for blower fan system is additionally provided, comprising: redundancy
Motor array and controller；Wherein, redundancy motor array is X motor of controller coordinate by being made up of, wherein X be not less than
2 natural number；Controller generates manipulation instruction data flow, and by making manipulation instruction data flow be sent into redundancy horse according to program
Up to coordinating the X motor in the driving circuit of each motor in array；Wherein, manipulation instruction data flow is used to indicate superfluous
The execution timing of each motor in remaining motor array, and execute timing and assisted automatically from the motor in function normal condition
Quotient selects the motor as host node, so that the motor as host node is the requirement for meeting operator to blower fan system, allows horse
Corresponding operation reaction is made in operation up to system.
Preferably, manipulation instruction is the either reservation type executed immediately.
Preferably, each motor in redundancy motor array has unique numeric address for identification.
Preferably, the highly reliable operation number motor system for blower fan system further includes for acquiring each motor
Temperature temperature sensor system.
Preferably, the temperature data of collected each motor is sent to controller by temperature sensor system.
Preferably, controller participates in generating manipulating according to the temperature of the collected each motor of temperature sensor system and refer to
Enable data flow.
For example, the manipulation instruction data flow that controller generates is sent into the driving electricity of each motor in redundancy motor array
Road, so that selecting the minimum motor of temperature to be directed to the operation of motor system and make corresponding operation reaction.
Benefit of the invention is various, wherein most basic has three aspects:
1, in terms of security risk.Multisensor detecting is arranged with automatic protection, and spontaneous combustion or/and electric leakage electric shock etc. is greatly decreased
Security risk；
2, in terms of shutting down risk.It works long hours, motor failure is inevitable, still can avoid or be greatly decreased shutdown loss；
3, in terms of high-quality operation.Sufficiently with the present invention, even if part motor failure, maintenance still can allow blower in time
System synthesis continuously high-quality operation.
As a result, the present invention provides a kind of easy to maintain, overall cost reductions, high-performance, the long-life, high stable for wind
The highly reliable operation number motor system of machine system.
Detailed description of the invention
In conjunction with attached drawing, and by reference to following detailed description, it will more easily have more complete understanding to the present invention
And its adjoint advantage and feature is more easily to understand, in which:
Fig. 1 schematically shows the highly reliable operation number for blower fan system of first preferred embodiment according to the present invention
The system block diagram of code motor system.
Fig. 2 schematically shows the highly reliable operation numbers for blower fan system of the second preferred embodiment according to the present invention
The system block diagram of code motor system.
It should be noted that attached drawing is not intended to limit the present invention for illustrating the present invention.Note that indicating that the attached drawing of structure can
It can be not necessarily drawn to scale.Also, in attached drawing, same or similar element indicates same or similar label.
Specific embodiment
In order to keep the contents of the present invention more clear and understandable, combined with specific embodiments below with attached drawing in of the invention
Appearance is described in detail.
It is highly reliable to include at least three aspects, 1, wind sheltering danger.Blower fan system is high to operator and safety of surrounding environment degree,
2, anti-shutdown.Blower fan system hang-up probability is extremely low, 3, steady index.Blower fan system operating index meets the guarantor of operator's requirement
Barrier rate is high.
Present invention is specifically directed to the redundancies of motor and motor driving to provide " redundancy motor array " scheme.Redundancy motor array
The thinking that system is constituted using (1+N) a motor, N is natural number.Wherein " 1+ " expression is that at least one motor unit is normal
Work.When operation, M motor operations (wherein M is natural number, and 1≤M≤1+N) can be, each motor that works is according to preparatory
The program of establishment is commanded by control circuit and is run.If a motor breaks down, it can not shut down or hesitation switches, cut
Changing can be done either automatically or manually, and can resume work after System self-test passes through after switching.Work as N=1, when 2,3,4,5,6,7, is
System is exactly dual motor system, three motor systems, four ..., eight motor systems.
The redundancy motor array being made of (1+N) a motor can be (N+1) a motor all under system manipulation, together
When or part enter operating status.If a motor breaks down, system terminates (1+N) scheme automatically, while starting N motor
Scheme, that is, 1+M scheme (wherein M=N-1, M >=1).For example, eight motor solu-tions run " 1+7 " program, when a motor event
When barrier, 8 motor solu-tions of system closure start to execute 7 motor solu-tions (i.e. " 1+6 " program)；If there is motor failure again, system according to
Secondary execution (1+5) scheme ..., (1+1) scheme, extreme case is (1+0) scheme.
The input/output part of blower fan system refers mainly to manipulation of switches, relay (or similar functions electronic switch) and horse
Up to driving circuit, communicating circuit, sensor, touch screen (display screen), indicator light etc..Manipulation of switches redundancy is on switch panel
Using biswitch in parallel, installed in common position and offset position (stowed position), routine use is in the switch for commonly using position, often
Being broken down with position switch can be used offset position Redundanter schalter.
Offset position switch can be placed in concealed location with micropore scheme, can also use Camouflage project or high-drag scheme,
Ensure usually standby, takes work.Common position switch access band normally off relief structure (i.e. forced cut-out structure), can keep away
Exempt to influence biasing Redundanter schalter work.When touch screen (display screen), instruction lamp failure, system is automatically into single motor switchover operation
State, host node select to be still control parameter by the minimum temperature that sensor obtains, and can set automatic shutdown by original at this time,
It can manually shut down.When turning back on, single motor solu-tions can be executed automatically, can also manually adjust operating scheme.
The levels of redundancy of equipment, as the failure of accessory is incremented by and successively decreases, while by indicating lamp display mode.It is superfluous by 8 grades
For remaining, fault-free green is soft；The bad highlighted length of a unit green is bright, bad two green sparkles, and bad three Lan Changliang are four bad
Blue flash is bright, bad five Huang Changliang, and bad six yellow flashings, bad seven red length are bright, bad eight red flashings.
For example, all fault-frees, all with the soft ornament lamp of green；It breaks down, according to the form below or similar significant difference scheme
Light warning increases buzzer warning when red light is bright.And it needs to close manually, repetition of alarms and need are manually just when turning back on
It can close, user is reminded to replace trouble unit in time.
When redundancy motor array is (1+7) scheme, a kind of extreme operating condition of this eight motors is that 8 motors respectively undertake 12.5%
Task, underload is also to lengthen the life to improve a kind of method of reliability.System motor sum can with 9 or more
It is more.There is no difference in principle, also belongs to the coverage area of this programme.
If necessary to increase air quantity and wind pressure, to improve wind speed, run using the workload of the super 1/M of M motor.If needed
Wind pressure that will be bigger can be run with two or three concatenations, form the array pattern of 2*K or 3*K.
It that is, motor array mode can be entirely side by side, can be after concatenating side by side, be also possible to rear string side by side
It connects.If it is full concatenation, there is redundancy effect, and wind pressure more higher than single motor, the raising of antiwind resistance ability can be generated, but air quantity
It is lower not increase or increase limited and efficiency, air duct setting is improper often can be lower than single motor air quantity, can in special requirement
Give implementation.
In the present invention, redundancy motor array uses " active redundancy structure ".Wherein implementation method is each motor unit
(node) can automaticly inspect the operating status of whole (1+N) a node, and in K node failure automatically from the side (1+N)
Case is switched to spare (1+M) scheme, wherein M=N-K, M≤0.(for example, " 1+7 " scheme, certain node failure is just automatic to degrade
For " 1+6 " scheme, if continuously occurring two node failures again, " 1+6 " scheme is just downgraded to " 1+4 " scheme automatically).
Also there are two types of implementations for the active redundancy(-ce) framework that the present invention uses:
Exchange the communication channel of operating status first is that being equipped between host node and standby node, by their " voluntarily negotiations " when
Active-standby switch is carried out, autocontrol mode is properly termed as.Here motor digital frequency conversion drive control circuit has necessary communication function
Can, when only a motor is normal when that cannot communicate between two motors or in current system, they can be automatically by oneself
It is set as host node, power needed for blower fan system is provided.After two motors establish communication connection, whom they can be main section with regard to
Point is held consultation, and host node will be to including whether to read instruction that fan operation person is sent by button and each temperature wind speed senses
The condition information that device transmission comes, if provide data to peripheral system such as display screen, light sound caution device, if allow fan blade
Reaction is provided by the driving service of which rotation speed operation.After it is host node that whom, which is determined, two motors will consciously be set oneself
It is set to corresponding working condition.Host node slave node in automated manner, they in systems all with it is different " digitally
Location " facilitates the existence and working condition for determining them, also the information provided them is facilitated to carry out different processing.
Second of implementation method be based on a special redundant control module, redundant control module respectively with main-standby nodes
Communication, redundant control module also acquire the requirement information (gear height and fine adjustment signal) sent manually, also temperature collection
Air outlet and motor the heating information and air outlet wind speed information that sensor transmits, and what which unit determined according to being preprogramed
As standby node, when carry out active-standby switch.This set integrated data concentrates control mode, referred to as " collection prosecutor formula ".
In the realization of collection prosecutor formula, main-standby nodes are at runtime all to redundant manipulator " registration ", by redundant manipulator
Read and determine their existing way, in addition redundant manipulator also serves as the responsibility of monitoring main-standby nodes operating status.Work as master
When node does not respond within the set time, redundant manipulator then resets the method for operation of main-standby nodes, slave node generation
Operation instruction is received for host node, power offer task is provided.The driving circuit of each node unit, can be with replaceable module
Form is integrated in redundant control module, and more is a Unified Communication and sets up driving circuit according to node unit separately.Especially need
It is to be noted that the redundant manipulator of " collection prosecutor formula " includes that data/address bus and other key modules itself at least 1 grade of redundancy are matched
It sets.
In this case, main-standby nodes have using specified logical address, their operating status is to CLIENT PROGRAM
It is the transparent of holography, all " client's requests " is all controlled by redundant manipulator, and is sent after being modulated by redundant manipulator
To each main-standby nodes.
Support the motor of redundancy, in order to meet corresponding system performance of handoffs requirement, driving circuit is to identification function, logical
Communication function and execution function can preferably be specifically designed (especially standby mode identification, command reception, instruction feedback, operation
Or malfunction identification).
General redundant system is roughly exactly back-up system, either active or passive type, purpose and
Effect is that the routine work of safeguards system operates normally.Redundant system of the invention, first also secure effect, in addition there is performance
Promotion, more have the expansion of new function (quantitative change causes qualitative change).
The present invention can be " redundancy " concept in the high reliable request equipment such as computer server, and creativeness is used for blower system
In system, the especially blower fan system of the particular/special requirements such as military affairs, scientific research, medical treatment, industry, business.In fact, tool provided by the invention
There is the system of redundancy feature can be used for various using motor as power, needs the long device systems continued a journey.
Particularly preferred embodiment of the invention is described below.
<first preferred embodiment>
Fig. 1 schematically shows the highly reliable operation for blower fan system of first preferred embodiment according to the present invention
The system block diagram of digital motor system.
As shown in Figure 1, the highly reliable operation number motor for blower fan system of first preferred embodiment according to the present invention
System includes: redundancy motor array 100；Wherein, redundancy motor array is made of X motor 10, and wherein X is oneself not less than 2
So number；Each motor 10 includes the motor digital frequency conversion drive control circuit 11 with communication function；With predetermined period or press
According to predetermined set, communicated between each motor by respective motor digital frequency conversion drive control circuit 11, to identify
The motor of function normal condition is in redundancy motor array out, and negotiates to select from the motor in function normal condition
As the motor (other motors are slave node) of host node, so that the motor as host node is to meet operator to blower fan system
Requirement, allow the operation of motor system make corresponding operation reaction.That is, requirement of the operator to blower fan system is from blower fan system
Human-computer interaction interface or control panel input, operating instruction is converted by control circuit, host node motor is according to operating instruction
Operating, achievees the purpose that reliably working.
Preferably, manipulation instruction can be executes immediately, is also possible to reservation type.
Preferably, each motor in redundancy motor array has unique numeric address for identification.
Preferably, the highly reliable operation number motor system for blower fan system of first preferred embodiment according to the present invention
It further include the temperature sensor system for acquiring the temperature of each motor.
It is further preferred that system starts host node selection change program when the temperature over-range of certain host node motor.From
Negotiating the step of selecting the motor as host node in normally functioning motor includes: all temperature sensor systems of acquisition
Collected each motor temperature value, compares with the normal temperature upper limit of setting, and all in normal range (NR), temperature starting is logical for data
Road is failure to actuate, and data have starting host node change program when beyond the setting upper limit.Change mode is for example: selectionIt selectsTemperature is minimum
Motor of the motor as host node；Or selectionIt selectsThe highest host node motor of temperature is changed to slave node motor.
Preferably, when certain host node motor rotary speed transfinites, system starts host node selection change program.When certain host node
Motor rotary speed reaches some percentage (such as 70%) of rated speed, and there are also vice-node motor, system increases master automatically
The amount of node motor can reduce the revolving speed of host node motor while making air output meet operator to require.
The air outlet of blower assembly is provided with air velocity transducer, air speed data and the received manipulation instruction of equipment or default
Program instruction all with master board (central control circuit) real time communication, is adjusted the quantity and operation conditions of host node motor
Section.
Preferably, when certain host node motor continuous working period reaches preset value, system starts host node selection change
Program.Systematic selection vice-node is host node or/and the host node revolving speed that promotion does not exceed the speed limit.
The high reliability of realization includes three aspects: 1, it is safe, do not occur excess temperature spontaneous combustion and leakproof；2, it does not shut down,
Motor, which does not burn or burns, redundancy replacement；3, wind-force is appropriate, not too low excessively high, in operational order range.
<the second preferred embodiment>
Fig. 2 schematically shows the highly reliable operation numbers for blower fan system of the second preferred embodiment according to the present invention
The system block diagram of code motor system.
As shown in Fig. 2, the highly reliable operation number motor for blower fan system of the second preferred embodiment according to the present invention
System includes: redundancy motor array 100 and controller 200；Wherein, redundancy motor array is a by the X coordinated by controller 200
Motor 10 forms, and wherein X is the natural number not less than 2；Controller 200 generates manipulation instruction data flow, and passes through so that behaviour
Coordinate the X motor in the driving circuit for each motor that control instruction data flow is sent into redundancy motor array according to program；
Wherein, manipulation instruction data flow is used to indicate the execution timing of each motor in redundancy motor array, and execute timing from
Negotiate to select the motor (other motors are slave node) as host node in normally functioning motor, so that as host node
Motor be the requirement for meeting operator to blower fan system, allow the operation of motor system make corresponding operation reaction.
Preferably, manipulation instruction can be executes immediately, is also possible to reservation type.
Preferably, each motor in redundancy motor array has unique address for identification.
Preferably, the highly reliable operation number motor system for blower fan system of first preferred embodiment according to the present invention
It further include the temperature sensor system for acquiring the temperature of each motor；And temperature sensor system will be collected each
The temperature data of motor is sent to controller 200.
It is further preferred that temperature of the controller 200 according to the temperature of the collected each motor of temperature sensor system
To generate manipulation instruction data flow.For example, each in the manipulation instruction data flow feeding redundancy motor array that controller 200 generates
The driving circuit of a motor, so that selecting, the minimum motor of temperature is host node motor or the highest host node motor of temperature is
Slave node motor makes corresponding operation reaction to be directed to the operation of motor system.
As a result, the present invention provides a kind of overall cost reduction, high-performance, the long-life, high stable, easy to maintain be used for wind
The highly reliable operation number motor system of machine system.
<other designs consider>
In addition, being directed to the temperature of motor, current Miniature digital motor will effectively work, and revolving speed is in 10,000/minute~more than ten
It, in the future only can be higher between ten thousand revs/min.Motor turns more than ten, 20 hours even 24 hours daily, many times turns per minute
About 100,000 turns, average operating temperature is common in 60 to 70 degree of high fever.For motor, if casing or silicon steel sheet
Temperature reduce, this will imply that reduce motor spindle bearing lubricant evaporation and reduce bearing clearance size become
Change, this will substantially reduce the probability of its damage.According to certain model hard disk motor detecting disclosed in Seagate company as a result, at 34 DEG C
When MTBF be 150,000 hour, but at 25 DEG C, can reach 230,000 hour, temperature reduces by 9 DEG C=service life and extends to
1.53 again.
Reduce motor temperature, in blower fan system it is most convenient that using and increase the heat dissipation capacity of wind.Strengthened scheme is exactly to increase
Add one piece of metal fin (conventional products select aluminium radiator fin, preferably select copper radiating rib and silver-colored cooling fin).Fan blade high-speed rotation,
It has to consider the problems of vibration.It is to be understood that the higher revolving speed of fan can be only achieved certain air quantity, but as using more inferior
Fan blade, though cost is low, the service life is short and self-vibration is severe, it is also possible to unstable resonance is brought, to the stabilization of motor and internal component
Property and the experience sense of operator bring adverse effect, it is also possible to so that some components is occurred fatigue of materials ahead of time and is damaged.In addition to choosing
The fan blade and motor for selecting high quality increase shock-absorbing cushion when installing motor, casing shock-absorbing piece has certain effectiveness.
Vibrating sensor can also be added in blower driving, instruction that can be different according to operator, by routine plan adjustment
Temperature and while rotation speed of the fan, whether detecting has discord harmonic motion, when there is discord harmonic motion to occur, by micro raising or
Wind speed spin rates are reduced to eliminate or mitigate resonance, while preferably controlling fan noise and vibration, extends complete machine and uses
Service life.
Blower fan system how is maintained and safeguarded, is prolonged its service life to greatest extent, it is necessary to pay close attention to dirt problems.Ash
The threat that dirt constitutes blower fan system can not be ignored.From previous fan repair through examining, even if seeming very clean ring
It works in border, since some positions PCB have the electrostatic of high voltage, is easy absorption dust, and the deposition of dust will affect electricity
The heat of sub- component distributes, this will lead to component temperature rising, and then thermal stability decline occurs and even generate overheat delay machine,
Cause to burn when serious.In addition, dust can also absorb moisture, some indescribable short circuit problems or etching electronic line are caused
Breaking problem is caused on road.Therefore, tiny dust is the formidable enemy of equipment stable operation.
Blower fan system use environment is different, and dust necessarily will continue to accumulate.Thus, it is necessary to when can periodically carry out it is clear
Reason,
Cumulative activation timer is set, and working 800 hours or work in more dust atmosphere in clean environment 300 hours can
To maintain to after service department, dust sensor is separately set, when dust thickness reaches some numerical value, device prompts work as dust
When thickness is more than some data, equipment enters guard mode.
When maintenance, it is, for example, possible to use dust-proof spray (such as U.S. CRC board dust-proofing agent), using there is antistatic (ESD) function
The small brushes of energy are carefully cleaned, or clean dust using blowing ball or air blow gun, reduce out of order probability.All maintenances
Work all softly carries out in the state of power-off.Especially air inlet and exhaust outlet have near sensor and board is inserted
Socket part position dust is most.
MTBF calculate in primary concern is that in product each device crash rate.But due to device different environment,
Its crash rate can make a big difference under different use conditions, for example, identical product is in different environments, such as in laboratory
On ocean platform, reliability value is different certainly；The capacitor that for another example a voltage rating is 16V is in virtual voltage
Crash rate under 25V and 5V is different certainly.So when calculating reliability index, it is necessary to consider above-mentioned many factors.
Selected component, heated position preferably have the heat resistance beyond the possible highest temperature, and the position of overcurrent is excellent
Selection of land has the resistance to fluidity for surpassing 10 times of operating currents, and the position that must carry fluctuation voltage preferably has the resistance to pressure more than 3 times.
The position for having electric spark to generate can use industrial platinum contact or silver-plated process.
It determines certain component rapid wears or has broken down, reason can be analyzed, adjusted or local redundancy.
<highly reliable>
Realization in terms of highly reliable include three:
1, wind sheltering danger --- blower fan system is high to operator and safety of surrounding environment degree,
Measure:, can when master control borad, each node motor, heater, the heat sensor excess temperature of air outlet or detection of electrical leakage exception
First partial cutoff power supply, can also cut off the power comprehensively or partial cutoff before it is invalid after cut off the power comprehensively
2, anti-shutdown --- blower fan system hang-up probability is extremely low,
Measure: the independent driving real time communication of master control borad and each motor, host node motor failure, vice-node motor open immediately
It is dynamic, former host node motor operations are taken over, other important or/and easily worn part also carries out redundancy.
3, the coverage ratio that steady index --- blower fan system operating index meets operator's requirement is high.
Corresponding measure include: air outlet air velocity transducer and air outlet temperature sensor it is all real-time with master control borad respectively
Communication, when wind speed deviation or temperature departure director data, master control borad issues a command to the driving of host node motor or heater, reaches
The adjusting of " anti-offset direction " forms a kind of " in dynamic time ", stablizes index in claimed range.
It should be noted that unless otherwise indicated, otherwise the term " first " in specification, " second ", " third " etc. are retouched
Various components, element, the step etc. for being used only for distinguishing in specification are stated, without being intended to indicate that various components, element, step
Between logical relation or ordinal relation etc..
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as
With the equivalent embodiment of variation.Therefore, all without departing from the technology of the present invention thinking or the content of scheme, technology according to the present invention
Essence any simple modifications, equivalents, and modifications made to the above embodiment still fall within technical solution of the present invention protection
In the range of.
Claims (10)
1. a kind of highly reliable operation number motor system for blower fan system, characterized by comprising: redundancy motor array；Its
In, redundancy motor array is made of X motor, and wherein X is the natural number not less than 2；Each motor is electromechanical assembled unit,
Digital frequency conversion drive control circuit including motor body and with communication function, building form can be it is integrated,
It is also possible to split connected；Usually it is arranged with parallel way between each motor, special circumstances can also be arranged in series.X horse
Up to according to it is scheduled take turns to operate the period or according to preset assembled scheme operate so that work independently X digital frequency conversion
Communication is kept between drive control circuit, so that the motor that function normal condition is in redundancy motor array is identified in real time, and
And auto negotiation selects the horse as host node from the motor in function normal condition according to predetermined period or presupposed solution
It reaches；Requirement of the operator to blower fan system is inputted from the human-computer interaction interface or control panel of blower fan system, is turned by control circuit
Change operating instruction into, host node motor is operated according to operating instruction, achievees the purpose that reliably working.
2. the highly reliable operation number motor system according to claim 1 for blower fan system, which is characterized in that redundancy
Each motor in motor array has unique numeric address for identification.
3. the highly reliable operation number motor system according to claim 1 or 2 for blower fan system, which is characterized in that
It further include the temperature sensor system for acquiring each motor temperature.
4. the highly reliable operation number motor system according to claim 3 for blower fan system, which is characterized in that from
It includes: according to temperature sensor system that auto negotiation, which selects the step of motor as host node, in the motor of function normal condition
It unites collected each motor temperature and/or revolving speed selects motor as host node.
5. a kind of highly reliable operation number motor system for blower fan system, characterized by comprising: redundancy motor array and
Controller；Wherein, redundancy motor array X motor of controller coordinate by being made up of, and wherein X is the natural number not less than 2；
Controller generates manipulation instruction data flow, and by being sent into manipulation instruction data flow in redundancy motor array according to program
Coordinate the X motor in the driving circuit of each motor；Wherein, manipulation instruction data flow is used to indicate redundancy motor array
In each motor execution timing, and execute timing from negotiating to select as host node in the normally functioning motor
Motor allows host node motor according to operation so that requirement of the operator to blower fan system, is converted into operating instruction by control circuit
Corresponding operation reaction is made in instruction.
6. the highly reliable operation number motor system according to claim 5 for blower fan system, which is characterized in that manipulation
Instruction is the either reservation type executed immediately.
7. the highly reliable operation number motor system according to claim 5 or 6 for blower fan system, which is characterized in that
Each motor in redundancy motor array has unique numeric address for identification.
8. the highly reliable operation number motor system according to claim 5 or 6 for blower fan system, it is characterised in that also
Temperature sensor system including the temperature for acquiring each motor.
9. the highly reliable operation number motor system according to claim 8 for blower fan system, which is characterized in that temperature
The temperature data of collected each motor is sent to controller by sensing system.
10. the highly reliable operation number motor system according to claim 5 or 6 for blower fan system, which is characterized in that
Controller generates manipulation instruction data flow according to the temperature of the collected each motor of temperature sensor system.
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| CN201910723428.1A CN110439840A (en) | 2019-08-06 | 2019-08-06 | Highly reliable operation number motor system for blower fan system |
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| CN201910723428.1A CN110439840A (en) | 2019-08-06 | 2019-08-06 | Highly reliable operation number motor system for blower fan system |
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Application publication date: 20191112 |