CN106958908A - VMC and its air quantity control method and device - Google Patents
VMC and its air quantity control method and device Download PDFInfo
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- CN106958908A CN106958908A CN201710104080.9A CN201710104080A CN106958908A CN 106958908 A CN106958908 A CN 106958908A CN 201710104080 A CN201710104080 A CN 201710104080A CN 106958908 A CN106958908 A CN 106958908A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
- Ventilation (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The present invention proposes a kind of air quantity control method and device of VMC, by obtaining after the current discharge quantity of fan of VMC and the target discharge quantity of fan of VMC, judge the current discharge quantity of fan of the VMC and the mathematical relationship of target discharge quantity of fan, if the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan, then illustrate not enough to the fresh-air volume of indoor conveying, then control instruction is sent to the power supply of the motor of VMC, the output of power supply is improved to the voltage of motor, with the present input voltage for the motor for increasing VMC, with the rotating speed for the motor for improving VMC, so that current discharge quantity of fan increase of the VMC to indoor conveying, maintain the balance of discharge quantity of fan.
Description
Technical field
The present invention relates to the air quantity control method and device of VMC technical field, more particularly to a kind of VMC.
Background technology
VMC is a kind of new indoor vented exhaust equipment, to closed indoor conveying fresh air, with outdoor fresh
Air updates the foul atmospheres such as indoor carbon dioxide, to keep the cleanliness factor of room air, the need for meeting indoor fresh air ventilating.
Current VMC can not realize constant output air quantity, because the increasing of the time worked with VMC
Plus, the chocking-up degree of filter screen can be increasingly severe in VMC, causes the discharge quantity of fan of VMC increasingly to be decayed.
The content of the invention
Based on this, the present invention proposes a kind of air quantity control method and device of VMC, by increasing capacitance it is possible to increase VMC
Discharge quantity of fan.
A kind of air quantity control method of VMC, comprises the following steps：
Obtain the current discharge quantity of fan of VMC and the target discharge quantity of fan of VMC；
If the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan of VMC, to VMC
The power supply of motor sends control instruction, increases the present input voltage of the motor.
A kind of air quantity controller of VMC, including：
Air quantity acquisition module, the target of current discharge quantity of fan and VMC for obtaining VMC exports wind
Amount；
First voltage increases module, if the target that the current discharge quantity of fan for the VMC is less than VMC is defeated
Air output, then send control instruction to the power supply of the motor of VMC, increases the present input voltage of the motor of VMC.
The air quantity control method and device of above-mentioned VMC, obtain current discharge quantity of fan and the fresh air system of VMC
After the target discharge quantity of fan of system, the current discharge quantity of fan of the VMC and the mathematical relationship of target discharge quantity of fan are judged, if
The current discharge quantity of fan of the VMC be less than the target discharge quantity of fan, then illustrate to indoor conveying fresh-air volume not
Foot, then send control instruction to the power supply of the motor of VMC, the output of power supply is improved to the voltage of motor, to increase fresh air
The present input voltage of the motor of system, with the rotating speed for the motor for improving VMC so that VMC is to indoor conveying
Current discharge quantity of fan increase, maintains the balance of discharge quantity of fan.
Brief description of the drawings
Fig. 1 be one embodiment in VMC air quantity control method schematic flow sheet；
Fig. 2 be another embodiment in VMC air quantity control method schematic flow sheet；
Fig. 3 is the schematic flow sheet of the air quantity control method of VMC in further embodiment；
Fig. 4 be one embodiment in VMC air quantity controller structural representation.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is the schematic flow sheet of the air quantity control method of VMC, is comprised the following steps：
S11：Obtain the current discharge quantity of fan of VMC and the target discharge quantity of fan of VMC；
S12：If the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan of VMC, to fresh air system
The power supply of the motor of system sends control instruction, increases the present input voltage of the motor.
The air quantity control method and device of above-mentioned VMC, obtain current discharge quantity of fan and the fresh air system of VMC
After the target discharge quantity of fan of system, the current discharge quantity of fan of the VMC and the mathematical relationship of target discharge quantity of fan are judged, if
The current discharge quantity of fan of the VMC be less than the target discharge quantity of fan, then illustrate to indoor conveying fresh-air volume not
Foot, then send control instruction to the power supply of the motor of VMC, the output of power supply is improved to the voltage of motor, to increase fresh air
The present input voltage of the motor of system, with the rotating speed for the motor for improving VMC so that VMC is to indoor conveying
Current discharge quantity of fan increase, maintain the balance of discharge quantity of fan, realizes that the discharge quantity of fan of VMC is automatically controlled.
VMC is a kind of new indoor vented exhaust equipment, to closed indoor conveying fresh air, meets indoor fresh air
The need for ventilation.In one embodiment, VMC includes control main frame, power supply, motor, air channel and filter screen.Specifically,
Control main frame can be used for the rotating speed for preserving motor, and according to the corresponding target discharge quantity of fan of each motor speed of preservation.Control main frame
Command adapted thereto can also be sent to power supply according to the mathematical relationship of current discharge quantity of fan and target discharge quantity of fan.A kind of optional
In embodiment, if the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan of VMC, to fresh air system
The step of power supply of the motor of system sends control instruction, the present input voltage of the increase motor includes：
Control instruction is sent to the corresponding power supply of motor by the control main frame of VMC, the corresponding power supply is improved
Output voltage.
The equipment such as control main frame, the motor of VMC are required to power supply, and different equipment correspond to different power supplys and connect
Mouthful, even different power supplys, motor has its corresponding power supply to power, such as to improve the input voltage of motor, that is, find as electricity
The corresponding power supply that machine is powered, improves the output voltage of the power supply.
The target discharge quantity of fan of VMC is the desired discharge quantity of fan under certain motor speed, and different motors turn
Speed correspond to different target discharge quantity of fan, and the target discharge quantity of fan of VMC can be preserved by control main frame.VMC
Reality output air quantity be the reality output air quantity of VMC under certain described motor speed.In a kind of optional embodiment party
In formula, the current discharge quantity of fan of VMC can be detected by wind quantity test meter, is then obtained by the control main frame of VMC
The current discharge quantity of fan for taking wind quantity test meter to detect.The wind quantity test meter precision is very high, up to 0.03, the wind quantity test meter
Concretely ACH-1 air quantity shields.Wind quantity test meter is simple to operate, high precision, there is very high reliability.It is specific below by one
Embodiment illustrates.
In a specific embodiment, the step S11 and S12 in the air quantity control method of VMC are in VMC
Performed in control main frame, the target discharge quantity of fan that control main frame is preserved is 30m3/ h, the wind quantity test meter inspection that control main frame is obtained
The current discharge quantity of fan of the VMC of survey is 29m3/ h, control main frame is by the target discharge quantity of fan 30m of preservation3/ h and fresh air system
The current discharge quantity of fan of system is 29m3/ h is contrasted, and is judged as that current discharge quantity of fan is less than target discharge quantity of fan, then control master
Machine sends control instruction, increases the present input voltage of the motor, with the rotating speed for the motor for improving VMC, passes through increase
The present input voltage of the motor come realize to correction from VMC to the current discharge quantity of fan of interior conveying, maintain output
The balance of air quantity, realizes that the discharge quantity of fan of VMC is automatically controlled.
In a kind of optional embodiment, the step of obtaining current discharge quantity of fan includes：
Set up the corresponding relation of the current discharge quantity of fan of current filter net jam degree and current motor rotating speed and VMC；
By the current filter net jam degree of differential pressure measurement measurement device VMC and obtain the current electricity of VMC
Machine rotating speed；
Corresponding work as, is obtained according to the current filter net jam degree, the current motor rotating speed and the corresponding relation
Preceding discharge quantity of fan.
Before VMC is applied to real work occasion, current filter net jam degree can be established by many experiments
And the corresponding relation of the current motor rotating speed of VMC and current discharge quantity of fan, substantial amounts of experiment can ensure the reliability of data
Property and accuracy.Illustrate below by an instantiation.
For example, in experimentation, it is 80r/min to make current motor rotating speed, filter screen is carried out at different degrees of blocking
Reason, carries out after many experiments, obtains data as shown in the table respectively.From table 1 below, when filter screen is in different chocking-up degrees
When, current discharge quantity of fan is on a declining curve with filter net jam degree.If after VMC is applied to real work occasion,
It is 30% sometime to detect filter net jam degree, detects current motor rotating speed for 80r/min, then can look into according to table 1
Obtain current discharge quantity of fan and should be 20m3/h。
Table 1
| The filter net jam degree of setting | Current motor rotating speed | Current discharge quantity of fan |
| Without blocking | 80r/min | 30m3/h |
| Block 10% | 80r/min | 28m3/h |
| Block 20% | 80r/min | 25m3/h |
| Block 30% | 80r/min | 20m3/h |
| Block 40% | 80r/min | 18m3/h |
| Block 50% | 80r/min | 16m3/h |
| ··· | ··· | ··· |
For another example in experimentation, it is 30% to set filter net jam degree, sets different current motor rotating speeds, point
Data as shown in the table carry out not be obtained after many experiments.From table 2 below, when filter screen is in same chocking-up degree, currently
Discharge quantity of fan reduces on a declining curve with motor speed.If after VMC is applied to real work occasion, some when
It is 30% to detect filter net jam degree quarter, detects current motor rotating speed for 50r/min, then can check in currently according to table 2
Discharge quantity of fan should be 15m3/h。
Table 2
| The filter net jam degree of setting | Current motor rotating speed | Current discharge quantity of fan |
| Block 30% | 30r/min | 13m3/h |
| Block 30% | 40r/min | 14m3/h |
| Block 30% | 50r/min | 15m3/h |
| Block 30% | 60r/min | 16m3/h |
| Block 30% | 70r/min | 18m3/h |
| Block 30% | 80r/min | 20m3/h |
| ··· | ··· | ··· |
According to obtaining the corresponding relation of filter net jam degree and current motor rotating speed to current discharge quantity of fan after many experiments,
A more valuable reference is provided to obtain the numerical value of current discharge quantity of fan in actual motion, i.e. during actual motion, such as
Know current filter net jam degree and current motor rotating speed, the corresponding relation according to being obtained experiment can inquire correspondence
Current discharge quantity of fan.In VMC actual motion, specifically can by before and after filter screen installation one differential pressure indicator survey
Current filter net jam degree is measured, the chocking-up degree of filter screen is judged according to the size of pressure difference.Read from differential pressure indicator after pressure difference, obtain filter
The chocking-up degree of net, then according to the current motor rotating speed of acquisition, and according to existing experimental data, obtains current output wind
Amount.
The control instruction in step 12 can be sent to the energy supply control module of power supply by the control main frame of VMC,
Exported by energy supply control module increase power supply to the voltage of motor, so as to improve the present input voltage of the motor.The electricity
Source control module is the control device for possessing data processing function, after the control instruction is received, and can improve the electricity of power supply
Pressure output gear, to improve the present input voltage of the motor.The power supply can be dedicated for motor power it is special
Power supply.
In a kind of optional embodiment, referring to Fig. 2, before the present input voltage for increasing the motor, including
Following steps：
S121：Target motor rotating speed is obtained according to the target discharge quantity of fan of VMC；
S122：Target input voltage according to needed for being calculated the target motor rotating speed；
S123：If the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan of VMC, to fresh air
The power supply of the motor of system sends control instruction, increases the present input voltage of the motor to the target input voltage.
The target motor rotating speed is the rotating speed that VMC can be made to reach target discharge quantity of fan.In present embodiment,
Can obtain the size of target motor rotating speed according to the size of the target discharge quantity of fan of VMC, the rotating speed of motor be it is controllable can
Adjust measurable, current motor rotating speed can be obtained by the control main frame of VMC.In actual moving process, due to filter screen
And the presence in air channel, it is not that current motor rotating speed reaches the corresponding desired motor rotating speed of target discharge quantity of fan, it becomes possible to obtain
Target discharge quantity of fan is taken, because typically can all have filter screen and air channel in VMC, filter screen can over time be elapsed and can sent out
Raw to block, motor drives blower fan to rotate, and the air quantity of blower fan output by resistance during air channel by that also can be made VMC most
Whole air quantity reduction, therefore the target motor rotating speed in present embodiment is settable than ideally (filter screen is without blocking and wind
Without any resistance in road) motor speed it is larger, especially in the case where filter screen has occurred and that blocking.
Optionally, the step of obtaining target motor rotating speed according to the target discharge quantity of fan of VMC includes：
Set up target discharge quantity of fan and filter net jam degree and the corresponding relation of target motor rotating speed；
Current filter net jam degree is obtained by differential pressure measurement device, if the current discharge quantity of fan of the VMC is less than
The target discharge quantity of fan of VMC, then according to the target discharge quantity of fan, the current filter net jam degree and described right
Answer the corresponding target motor rotating speed of target discharge quantity of fan described in Relation acquisition.
Before VMC is applied to real work occasion, target discharge quantity of fan and mesh can be set up by many experiments
Mark the corresponding relation of motor speed.Illustrate below by an instantiation.
For example, in experimentation, it is 80r/min to set current motor speed, desired target discharge quantity of fan is
30m3/ h, filter screen is carried out different degrees of plugging handling, is carried out respectively after many experiments, is obtained data as shown in the table.By
Table 3 below understands that, when filter screen is in different chocking-up degrees, the current discharge quantity of fan that make VMC is target discharge quantity of fan
30m3/ h, then need to just improve current motor rotating speed 80r/min to corresponding target motor rotating speed.Such as filter net jam 20%, when
Front motor rotating speed, which need to be improved from 80r/min to 95r/min, can just make the discharge quantity of fan of VMC reach target discharge quantity of fan；
Filter net jam 30%, current motor rotating speed need to be improved to 107r/min from 80r/min, to ensure that current discharge quantity of fan remains mesh
Mark discharge quantity of fan 30m3/h.If VMC is applied to after practical matter, filter net jam degree 10% is such as measured and current
Discharge quantity of fan is 28m3/ h, less than target discharge quantity of fan 30m3/ h, then can check in the corresponding target of target discharge quantity of fan according to table 3
Motor speed is 89r/min, then increases the present input voltage of the motor to the target input voltage so that current motor
Rotating speed is target motor rotating speed.
Table 3
| The filter net jam degree of setting | Target discharge quantity of fan | Current motor rotating speed | Target motor rotating speed |
| Without blocking | 30m3/h | 80r/min | 81r/min |
| Block 10% | 30m3/h | 80r/min | 89r/min |
| Block 20% | 30m3/h | 80r/min | 95r/min |
| Block 30% | 30m3/h | 80r/min | 107r/min |
| Block 40% | 30m3/h | 80r/min | 118r/min |
| Block 50% | 30m3/h | 80r/min | 126r/min |
| ··· | ··· | ··· | ··· |
For another example in experimentation, it is 30% to set filter net jam degree, set different current motor speeds and
Corresponding desired target discharge quantity of fan is 30m3/ h, carries out after many experiments, obtains data as shown in the table respectively.By following table
4 understand, when it is 30% that filter screen, which is in chocking-up degree, and the current discharge quantity of fan that make VMC is target discharge quantity of fan
30m3/ h, then need to just adjust current motor rotating speed 80r/min to 85r/min.The current discharge quantity of fan for making VMC is
Target discharge quantity of fan 40m3/ h, then the defeated of VMC can just be made by needing from 90r/min to adjust current motor rotating speed to 94r/min
Air output reaches target discharge quantity of fan.If VMC is applied to after practical matter, such as measure filter net jam degree 30% with
And current discharge quantity of fan is 38m3/ h, less than target discharge quantity of fan 40m3/ h, then can check in target discharge quantity of fan correspondence according to table 4
Target motor rotating speed be 94r/min, calculate the target input voltage needed for target motor rotating speed, increase the current of the motor
Input voltage is to the target input voltage so that current motor rotating speed is target motor rotating speed.
Table 4
In VMC actual motion, specifically can by before and after filter screen installation one differential pressure indicator measure current filter
Net chocking-up degree, the chocking-up degree of filter screen is judged according to the size of pressure difference.
Increase the present input voltage of motor of VMC for after the target input voltage so that current motor rotating speed
Rotating speed of target value can be reached, and then improves the current discharge quantity of fan of VMC, is realized to the current defeated of VMC
The correction of air output, it is ensured that the autobalance of the current discharge quantity of fan of VMC, the need for meeting indoor fresh air ventilating.
In one embodiment, referring to Fig. 3, increase VMC motor present input voltage after, including with
Lower step：
S13：If the current discharge quantity of fan of the VMC is more than or equal to the target discharge quantity of fan of VMC, to
The power supply of the motor of VMC sends halt instruction, stops the present input voltage of increase motor.
After the present input voltage for the motor for increasing VMC, if the current discharge quantity of fan of the VMC is more than
Or equal to the target discharge quantity of fan of VMC, then halt instruction is sent to the power supply of the motor of VMC, stop increase electricity
The present input voltage of machine, to maintain the balance of current discharge quantity of fan.
, it is necessary to increase current discharge quantity of fan when the current discharge quantity of fan of VMC is less than target discharge quantity of fan, if because prominent
So change the reasons such as filter screen and make it that current discharge quantity of fan is much larger than target discharge quantity of fan, current discharge quantity of fan is excessive, may shadow
Ring the personnel just to air outlet.In one embodiment, the current discharge quantity of fan of VMC and the target of VMC are obtained
Discharge quantity of fan；If the current discharge quantity of fan of the VMC is more than the target discharge quantity of fan of VMC, to VMC
The power supply of motor send step-down control instruction, reduce the present input voltage of the motor.
When the current air quantity of detection VMC is excessive, more than target discharge quantity of fan, then to VMC motor electricity
Source sends step-down control instruction, reduces power supply and exports to the voltage of motor, to reduce the present input voltage of the motor, and then
The rotating speed of motor is reduced, so as to reduce the current discharge quantity of fan of motor, it is to avoid personnel of the excessive influence of air quantity just to air outlet.
A kind of embodiment of the air quantity control method of VMC of the present invention is the foregoing described, below in conjunction with attached
Figure further describes a kind of air quantity controller embodiment of VMC of the present invention.
Fig. 4 is a kind of structural representation of the air quantity controller of VMC, and the Boiler pressure control of Fig. 4 VMC is filled
Put including：
Air quantity acquisition module, the target of current discharge quantity of fan and VMC for obtaining VMC exports wind
Amount；
First voltage increases module, if the target that the current discharge quantity of fan for the VMC is less than VMC is defeated
Air output, then send control instruction to the power supply of the motor of VMC, increases the present input voltage of the motor of VMC.
The air quantity controller of above-mentioned VMC, the current discharge quantity of fan of VMC is obtained by air quantity acquisition module
And after the target discharge quantity of fan of VMC, the current output wind that module judges the VMC is increased by first voltage
Amount and the mathematical relationship of target discharge quantity of fan, if the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan,
Then illustrate not enough to the fresh-air volume of indoor conveying, then send control instruction to the power supply of the motor of VMC, improve power supply
Output to motor voltage, with the present input voltage for the motor for increasing VMC, to improve the motor of VMC
Rotating speed so that VMC maintains the balance of discharge quantity of fan to the current discharge quantity of fan increase of indoor conveying.
In one embodiment, the air quantity controller of the VMC also includes：
Target motor rotating speed acquisition module, for obtaining target motor rotating speed according to the target discharge quantity of fan of VMC,
And described target input voltage is calculated according to the target motor rotating speed；
Second voltage increases module, if the target that the current discharge quantity of fan for the VMC is less than VMC is defeated
Air output, then send control instruction to the power supply of the motor of VMC, increases the present input voltage of the motor to described
Target input voltage.
In one embodiment, the air quantity controller of the VMC, the target motor rotating speed acquisition module includes：
First corresponding relation building module, for setting up target discharge quantity of fan and filter net jam degree and target motor rotating speed
Corresponding relation；
Acquisition module is recognized, for obtaining current filter net jam degree by differential pressure measurement device, if the VMC
Current discharge quantity of fan be less than VMC target discharge quantity of fan, then according to the target discharge quantity of fan, the current filter screen
Chocking-up degree and the corresponding relation obtain the corresponding target motor rotating speed of the target discharge quantity of fan.
In one embodiment, the air quantity controller of the VMC, including：
Voltage stops increase module, if the current discharge quantity of fan for the VMC is more than or equal to VMC
Target discharge quantity of fan, then send halt instruction to the power supply of the motor of VMC, stops the present input voltage of increase motor.
In one embodiment, the first voltage increase module includes：
Control main frame control module, sends control to the corresponding power supply of motor for the control main frame by VMC and refers to
Order, increases the output voltage of the corresponding power supply.
In one embodiment, the air quantity controller of the VMC also includes：
Control module is depressured, if the target that the current discharge quantity of fan for the VMC is more than VMC exports wind
Amount, then send step-down control instruction to the power supply of the motor of VMC, reduces the present input voltage of the motor.
In one embodiment, the current discharge quantity of fan acquisition module includes：
Filter net jam degree and motor speed acquisition module, for passing through the current of differential pressure measurement measurement device VMC
The current motor rotating speed of filter net jam degree and VMC；
Computing module, works as being calculated according to the current motor rotating speed of the current filter net jam degree and VMC
Preceding discharge quantity of fan.
Second corresponding relation building module, for setting up current filter net jam degree and current motor rotating speed and VMC
Current discharge quantity of fan corresponding relation；
Acquisition module, for the current filter net jam degree by differential pressure measurement measurement device VMC and obtains fresh air
The current motor rotating speed of system；
Computing module, for being closed according to the current filter net jam degree, the current motor rotating speed and the correspondence
System obtains current discharge quantity of fan.
The air quantity controller of the VMC of the present invention and the air quantity control method of VMC are corresponded, in fresh air
The technical characteristic and its advantage that the embodiment of the air quantity control method of system is illustrated are applied to the wind of the VMC
In the embodiment of amount control device, hereby give notice that.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply each technical characteristic in example be possible to combination be all described, as long as but the combination of these technical characteristics be not present lance
Shield, all should be the scope that this specification is recorded.
Embodiment described above only expresses several embodiments of the present invention, and it describes more specific and detailed, but not
Therefore the limitation to the scope of the claims of the present invention can be interpreted as.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of air quantity control method of VMC, it is characterised in that comprise the following steps：
Obtain the current discharge quantity of fan of VMC and the target discharge quantity of fan of VMC；
If the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan of VMC, to the motor of VMC
Power supply send control instruction, increase the present input voltage of the motor.
2. the air quantity control method of VMC according to claim 1, it is characterised in that obtain the current of VMC
After the target discharge quantity of fan of discharge quantity of fan and VMC, comprise the following steps：
Target motor rotating speed is obtained according to the target discharge quantity of fan of VMC；
Target input voltage according to needed for being calculated the target motor rotating speed；
If the current discharge quantity of fan of the VMC is less than the target discharge quantity of fan of VMC, to the motor of VMC
Power supply send control instruction, increase the present input voltage of the motor to the target input voltage.
3. the air quantity control method of VMC according to claim 2, it is characterised in that according to the target of VMC
The step of discharge quantity of fan obtains target motor rotating speed includes：
Set up target discharge quantity of fan and filter net jam degree and the corresponding relation of target motor rotating speed；
Current filter net jam degree is obtained by differential pressure measurement device, if the current discharge quantity of fan of the VMC is less than fresh air
The target discharge quantity of fan of system, then close according to the target discharge quantity of fan, the current filter net jam degree and the correspondence
System obtains the corresponding target motor rotating speed of the target discharge quantity of fan.
4. the air quantity control method of VMC according to claim 1, it is characterised in that the motor of increase VMC
Present input voltage after, comprise the following steps：
If the current discharge quantity of fan of the VMC is more than or equal to the target discharge quantity of fan of VMC, to VMC
The power supply of motor send halt instruction, stop the present input voltage of increase motor.
5. the air quantity control method of VMC according to claim 1, it is characterised in that if the VMC is worked as
Preceding discharge quantity of fan is less than the target discharge quantity of fan of VMC, then sends control instruction to the power supply of the motor of VMC, increases
Plus the motor present input voltage the step of include：
Control instruction is sent to the corresponding power supply of motor by the control main frame of VMC, increases the defeated of the corresponding power supply
Go out voltage.
6. the air quantity control method of VMC according to claim 1, it is characterised in that obtain the current of VMC
After the target discharge quantity of fan of discharge quantity of fan and VMC, comprise the following steps：
If the current discharge quantity of fan of the VMC is more than the target discharge quantity of fan of VMC, to the motor of VMC
Power supply send step-down control instruction, reduce the present input voltage of the motor.
7. the air quantity control method of the VMC according to claim any one of 1-6, it is characterised in that obtain current defeated
The step of air output, includes：
Set up the corresponding relation of the current discharge quantity of fan of current filter net jam degree and current motor rotating speed and VMC；
Turned by the current filter net jam degree of differential pressure measurement measurement device VMC and the current motor that obtains VMC
Speed；
Obtain corresponding current defeated according to the current filter net jam degree, the current motor rotating speed and the corresponding relation
Air output.
8. a kind of air quantity controller of VMC, it is characterised in that including：
Air quantity acquisition module, for obtaining the current discharge quantity of fan of VMC and the target discharge quantity of fan of VMC；
First voltage increases module, if the target that the current discharge quantity of fan for the VMC is less than VMC exports wind
Amount, then send control instruction to the power supply of the motor of VMC, increases the present input voltage of the motor of VMC.
9. the air quantity controller of VMC according to claim 8, it is characterised in that first voltage increases module bag
Include：
Target motor rotating speed acquisition module, for obtaining target motor rotating speed according to the target discharge quantity of fan of VMC；
Target input voltage computing module, for calculating described target input voltage according to the target motor rotating speed；
Second voltage increases module, if the target that the current discharge quantity of fan for the VMC is less than VMC exports wind
Amount, then send control instruction to the power supply of the motor of VMC, increases the present input voltage of the motor to the target
Input voltage.
10. the air quantity controller of VMC according to claim 8, it is characterised in that target motor rotating speed is obtained
Module includes：
First corresponding relation building module, for setting up target discharge quantity of fan and filter net jam degree and pair of target motor rotating speed
It should be related to；
Acquisition module is recognized, for obtaining current filter net jam degree by differential pressure measurement device, if the VMC is worked as
Preceding discharge quantity of fan is less than the target discharge quantity of fan of VMC, then according to the target discharge quantity of fan, the current filter net jam
Degree and the corresponding relation obtain the corresponding target motor rotating speed of the target discharge quantity of fan.
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