CN206810835U - Air-valve control device, control system and vent cabinet - Google Patents
Air-valve control device, control system and vent cabinet Download PDFInfo
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- CN206810835U CN206810835U CN201720566134.9U CN201720566134U CN206810835U CN 206810835 U CN206810835 U CN 206810835U CN 201720566134 U CN201720566134 U CN 201720566134U CN 206810835 U CN206810835 U CN 206810835U
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Abstract
A kind of air-valve control device, control system and vent cabinet are the utility model is related to, air-valve is arranged on vent cabinet, and vent cabinet is provided with sliding door, including：Real-time air volume test portion, real-time air volume test portion are connected with air-valve, and real-time air volume signal is obtained at air-valve；Open area test section, open area test section are connected with sliding door, and the open area signal of sliding door is obtained at sliding door；Standard Wind Coverage Calculation portion, open area signal is received, and according to the safety surface wind speed of open area signal and default vent cabinet come outputting standard air volume signal；Air quantity difference judging part, real-time air volume signal and standard air volume signal are received, export air-valve control signal.The utility model is applicable to various air-valves, and eliminates pipeline air pressure, the interference of indoor air flows and artificial external factor, can realize the ventilation regulation of safer, efficient, energy-conservation, intelligence.
Description
Technical field
Controlling and regulating system field is the utility model is related to, especially a kind of air-valve control device, control system and ventilation
Cabinet.
Background technology
Vent cabinet is an indispensable part in laboratory ventilation design.In order that laboratory worker is not
The chemical substance failed to understand into some poisonous, can causing a disease or toxicity and organism are not swallowed in suction, should be had in laboratory good
Ventilation.To prevent the absorption of some steams, gas and particulate (smog, coal smoke, dust and aerosol), polluter must be used logical
Wind cabinet, ventilator cowling or the method for local ventilation remove.The speed that air-flow enters vent cabinet by vent cabinet operating surface is referred to as face wind
Speed, vent cabinet adjust the ventilation of cabinet by air-valve, and traditional air-valve is manually to adjust ventilation, and current
Air-valve air-valve can also be adjusted by detecting the face wind speed of vent cabinet.
Such as Patent No. CN201010518717.7 Chinese patent document discloses a kind of laboratory variable air ventilation
Cabinet control system, it is characterised in that：Venturi valve, displacement sensing including vent cabinet, on the air exhaust branch pipe of vent cabinet
The high alarm switch of device, door, face air monitoring and control system, fan frequency conversion system, valve positioner and valve actuator, face wind
Slowdown monitoring and control system include face air velocity transducer and wind volume varying controller, and wind volume varying controller measures vent cabinet and opened in real time
Degree, while the real-time measuring surface wind speed of face air velocity transducer, and convert it into voltage signal and be transmitted to wind volume varying controller, variable air rate
Controller according to face wind speed actual value compared with setting value, if wind speed not in range of set value, wind volume varying controller
To valve positioner output signal, valve positioner is again to valve actuator output signal, valve actuator driving venturi valve
Piston move up and down, change ventilation-sectional area, adjust ventilation volume.
Above-mentioned venturi valve includes valve body, device two connecting rod bases, tapered piston, connecting rod and control-rod in valve body, valve
Intracoelomic cavity is provided with the undergauge that conjunction is adapted with tapered piston, and tapered piston is mounted in connecting rod by piston bush, piston cap and spring compressor
One end, control-rod one end is connected by guide rod and rod hinge connection, the control-rod other end with valve actuator.
The advantages of above-mentioned face air monitoring and control system, includes：1), valve uses variable air rate venturi valve, can be according to
Design requirement is independently completed the control of the variable air rate of separate unit vent cabinet, effectively in time from discharge of pollutant sources toxic gas and
Grain, safely and reliably works；2), face wind speed is not by pipeline effects of air pressure, also not by the interference inside and outside vent cabinet；3) cabinet, is worked as
When door moves up and down, the valve of variable air rate can be automatically controlled, makes face wind speed is stable to should be fast in 0.5m/s, valve responds speed
Reaction, equilibration time are less than 1 second；It is required that VAV control valve effective surface wind speed, control and regulation mode should be closed-loop control, control
Panel directly displays face wind speed.4) exhaust air rate, is automatically adjusted to meet the safety surface wind speed needs under different conditions, can be passed through
Control panel sets minimum, maximum exhaust air rate or the face wind speed setting value of valve, and is able to maintain that minimum capacity or the face of requirement
Wind speed；5), should send sound and light alarm automatically when there are face wind speed low unsafe conditions excessively, controller should have emergency by
Button, when fire and unintended emergency situation occurs, this button is pressed, air-valve should be run by maximum quantity of wind, and send alarm.
By analyzing above-mentioned patent document, the laboratory variable air ventilation hood control system is to utilize face wind
The fast real-time measuring surface wind speed of sensor, and convert it into voltage signal and be transmitted to wind volume varying controller, wind volume varying controller according to
Face wind speed actual value is compared with setting value, i.e., opposite air speed value is detected and contrasted, so as to be adjusted according to comparing result
The piston of venturi valve, change ventilation-sectional area, be finally reached the effect of regulation ventilation.This control mode needs to use face
Air velocity transducer directly detects the face wind speed of vent cabinet and face wind speed actual value compares with setting value, applicable valve species
It is limited, and easily disturbed by ventilation shaft air pressure, indoor air flows and artificial external factor, measurement accuracy is not high.
A kind of intelligent control type ventilation is also disclosed in Patent No. CN201610236923.6 Chinese patent document
Cabinet, belong to field of experiment equipment, including wind speed inductor, air exhausting device, air compensation device, control centre, temperature sensor and pressure
Force snesor, air exhausting device and air compensation device are frequency conversion drive and are connected with control centre, and wind speed sense is set in vent cabinet
Device, temperature inductor and pressure sensor are answered, air-flow in vent cabinet, the parameter of air pressure can be monitored at any time, and be timely fed back to
Control centre, and then control the air quantity for mending wind and air draft.Closed loop auto-control can be achieved in the invention, and safety coefficient is high, and
Energy-saving and environmental protection.
The invention discharges the difference of gas flow according to different experiments, passes through electronic touch during the use of reality
Shield the setting into parameters such as trip temperature, pressure and wind speed, then the wind speed at wind speed inductor feedback air exhausting device is into control
The heart, control centre are same by the benefit air quantity of the program adjust automatically air compensation device woven, temperature sensor and pressure sensor
When feed back corresponding parameter to control centre, whether normal, and can pass through control operation door motor if detecting trystate in real time
The size of operation door opening is realized, the size of air quantity is mended in regulation.However, how automatic do not illustrate control centre for the invention
The benefit air quantity of air compensation device is adjusted, it is necessary to further carry out technical perfect.
To sum up, the ventilation of vent cabinet how is adjusted to real-time and precise, realizes the change of safer, efficient energy-conservation, intelligence
Air quantity control system turns into one of this area urgent problem to be solved.
Utility model content
In order to solve the above problems, the purpose of this utility model is to provide a kind of air-valve control device, and air-valve is arranged at
On vent cabinet, vent cabinet is provided with sliding door, including：Real-time air volume test portion, real-time air volume test portion is connected with air-valve, from air-valve
Place obtains real-time air volume signal, and real-time air quantity is when air-valve maintains certain opening angle, and real-time air volume test portion is to set frequency
The ventilation for the air-valve that rate detects；Open area test section, open area test section are connected with sliding door, are obtained at sliding door
The open area signal of sliding door；Standard Wind Coverage Calculation portion, open area signal is received, and according to open area signal and preset
The safety surface wind speed of vent cabinet carry out outputting standard air volume signal, air-valve needs logical when standard air quantity is ensures safety surface wind speed
Air quantity；Air quantity difference judging part, real-time air volume signal and standard air volume signal are received, export air-valve control signal, wherein, air-valve
The control action that control signal is implemented includes：
When real-time air quantity is in the range of the allowable error value of standard air quantity, the current opening angle of air-valve is maintained；
When real-time air quantity is not in the range of the allowable error value of standard air quantity, the current opening angle of adjustment air-valve, with
So that air quantity is ultimately in the range of allowable error value in real time.
Further, when air-valve is exhaust valve, the standard Wind Coverage Calculation of exhaust valve is carried out according to below equation：Q1
=VS；Wherein, Q1For the standard air quantity of exhaust valve, V is default safety surface wind speed, and S is the open area of sliding door.
Preferably, when air-valve also includes mending air-valve, the standard air quantity for mending air-valve is Q2=n Q1, wherein, Q2To mend air-valve
Standard air quantity, n span is [0.65,0.7].
Further, open area test section includes：Lift test section, it is connected with sliding door to detect opening for sliding door
Open height；Open area calculating part, Lift signal is received, and it is total high and sliding door further combined with the sliding door of sliding door
Width, the open area of sliding door is calculated according to below equation：S=(H-h) L；Wherein, S be sliding door open area, H
Always high for sliding door, h is the Lift of sliding door, and L is the width of sliding door.
Preferably, setpoint frequency is more than or equal to 40ms/ times.
Further, in air quantity difference judging part, when judging real-time air quantity not in the allowable error value model of standard air quantity
When enclosing, the control action that air-valve control signal is implemented specifically includes：If real-time air quantity is more than the allowable error of standard air quantity
It is worth the peak of scope, then reduces the opening angle of air-valve；If real-time air quantity is less than the allowable error value scope of standard air quantity
Minimum, then increase air-valve opening angle.
Preferably, the allowable error value of standard air quantity is 0.
A kind of air-valve control system is also disclosed in the utility model, and air-valve is arranged on vent cabinet, and vent cabinet is provided with sliding door, bag
Air-valve control device as described above is included, air-valve control device is connected with air-valve and sliding door respectively.
The utility model also provides a kind of vent cabinet, including air-valve control system as described above.
Further, vent cabinet is additionally provided with man-machine interface, for inputting control information and showing the status information of vent cabinet.
As above, air-valve control device, control system and vent cabinet provided by the utility model, are applicable to various wind
Valve, and eliminate pipeline air pressure, the interference of indoor air flows and artificial external factor, can realize it is safer, efficient,
The ventilation regulation of energy-conservation, intelligence.It is cited below particularly to be preferable to carry out for the above of the present utility model can be become apparent
Example, and with reference to accompanying drawing, be described in detail below.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 a are a kind of connection signal of air-valve control device in the utility model first embodiment and second embodiment
Figure；
Fig. 1 b are that the connection of another air-valve control device in the utility model first embodiment and second embodiment is shown
It is intended to；
Fig. 2 is the Each part connection diagram of the vent cabinet of the utility model 3rd embodiment.
Embodiment
Embodiment of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this theory
Content disclosed in bright book understands other advantages and effect of the present utility model easily.Although description of the present utility model will tie
Close preferred embodiment to introduce together, but this feature for not representing this utility model is only limitted to the embodiment.On the contrary, knot
It is to be possible to extend based on claim of the present utility model to cover to close the purpose that embodiment makees utility model introduction
The other selections or transformation gone out.Depth of the present utility model is understood in order to provide, will be included in describing below many specific
Details.The utility model can also be implemented without using these details.In addition, in order to avoid chaotic or fuzzy of the present utility model heavy
Point, some details will be omitted in the de-scription.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, can be with for example, " connection " can be wired connection or wireless connection
It is to be fixedly connected or be detachably connected, or is integrally connected；Can be mechanical connection or electrical connection；Can be with
It is to be joined directly together, can also be indirectly connected by intermediary, can is the connection of two element internals.For the general of this area
For logical technical staff, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
" on ", " under ", "left", "right", " top ", " bottom " in addition, used in the following description, should not be construed as pair
Limitation of the present utility model.
【First embodiment】
As shown in Figure 1a, present embodiment discloses a kind of air-valve control device, air-valve to be arranged on vent cabinet, and vent cabinet is set
There is sliding door, including：
Real-time air volume test portion 101, real-time air volume test portion 101 are connected with air-valve, and real-time air quantity is obtained at air-valve
Signal, real-time air quantity are the air-valve that real-time air volume test portion is detected with setpoint frequency when air-valve maintains certain opening angle
Ventilation；
Open area test section 102, open area test section 102 are connected with sliding door, and opening for sliding door is obtained at sliding door
Open area of signal；
Standard Wind Coverage Calculation portion 103, open area signal is received, and according to open area signal and default vent cabinet
Safety surface wind speed carry out outputting standard air volume signal, the ventilation that air-valve needs when standard air quantity is ensures safety surface wind speed；
Air quantity difference judging part 104, real-time air volume signal and standard air volume signal are received, export air-valve control signal, its
In, the control action that air-valve control signal is implemented includes：
When real-time air quantity is in the range of the allowable error value of standard air quantity, the current opening angle of air-valve is maintained；
When real-time air quantity is not in the range of the allowable error value of standard air quantity, the current opening angle of adjustment air-valve, with
So that air quantity is ultimately in the range of allowable error value in real time.
Wherein, above-mentioned real-time air volume test portion 101, open area test section 102, standard Wind Coverage Calculation portion 103 and wind
Amount difference judging part 104 is the concept of broad sense, can be hardware, such as sensor, detector etc., or software.
Specifically, when air-valve is exhaust valve, i.e., when vent cabinet is single wind type vent cabinet, the standard air quantity of exhaust valve
Calculating obtains according to below equation：Q=VS；Wherein, Q is standard air quantity, and V is default safety surface wind speed, and S is sliding door
Open area.
Further, in interior air-replenishing type ventilating cabinet, when air-valve not only include exhaust valve again including benefit air-valve when, benefit air-valve
Standard air quantity be Q2=n Q1, wherein, Q2To mend the standard air quantity of air-valve, n span is [0.65,0.7], it is preferable that
The air quantity regulating effect of vent cabinet is optimal when n value is 0.7, i.e., when the standard air quantity for mending air-valve reaches exhaust valve standard air quantity
When 70%, whole vent cabinet is in optimal ventilation state.
Further, as shown in Figure 1 b, the air-valve control device of the present embodiment also includes：
Lift test section 112, it is connected with sliding door to detect the Lift of sliding door；
Open area calculating part 122, Lift signal is received, and further combined with the total height of sliding door of sliding door and shifting
The width of door, the open area of sliding door is calculated according to below equation：S=(H-h) L；Wherein, S is the opening face of sliding door
Product, H are that sliding door is always high, and h is the Lift of sliding door, and L is the width of sliding door.Specifically, can be examined using displacement transducer
The position signalling of sliding door is surveyed, displacement transducer is connected with sliding door, its Lift is obtained at sliding door, so as to further calculate
Obtain the open area of sliding door, naturally it is also possible to the open area detected using other method.
More specifically, in the standard Wind Coverage Calculation portion 103 of the present embodiment, first according to total high, the sliding door width of sliding door
With the open area that sliding door is highly calculated in real time of sliding door, next open area according to sliding door and default safety surface wind
Standard airflow value is calculated in speed.It may occur to persons skilled in the art that the standard airflow value of sliding door can also be according to it herein
He is calculated with the method that such scheme has same principle.
Preferably, it is necessary to be carried out with frequency set in advance to the real-time air quantity of air-valve in real-time air volume test portion 101
Detection, it is preferred that the setpoint frequency is fixed frequency, can be that the frequency is more suitable when being actual measurement more than or equal to 40ms/ times
Detection frequency, can meet simultaneously data acquisition and energy-conservation of both demand.It is equally possible that the reality according to user
Demand is set.
Further, it is necessary to judge whether real-time airflow value is in standard airflow value in air quantity difference judging part 104
Allowable error value in the range of, the allowable error scope can be set by user, it is preferred that the allowable error value scope can be with
For 0, now when real-time airflow value is higher than standard airflow value, reduce the opening angle of air-valve；When real-time airflow value is less than standard
During airflow value, increase the opening angle of air-valve；When real-time airflow value is equal to standard airflow value, then the current unlatching of air-valve is maintained
Angle is constant.It may occur to persons skilled in the art that when allowable error value scope is set to 0, the best results of regulation and control.
Air-valve control device in the present embodiment, by detecting the real-time ventilation of air-valve and being obtained according to safety surface wind speed
Standard air quantity required for current vent cabinet, real-time airflow value and standard airflow value are contrasted, anti-according to the result of contrast
Feedback carrys out the opening angle of adjusting air valve, can be applied to a variety of air-valves such as Bernoulli Jacob's variable air rate regulating valve, venturi valve, butterfly valve,
Pipeline air pressure is eliminated, the interference of indoor air flows and artificial external factor, can realize and more accurately control, is had very
High practical value.
【Second embodiment】
Present embodiment discloses the air-valve and sliding door of a kind of air-valve control system, including vent cabinet, in addition to air-valve to control
Device, air-valve control device are connected with air-valve and sliding door respectively, wherein, as shown in Figure 1a, air-valve control device includes：
Real-time air volume test portion 101, real-time air volume test portion 101 are connected with air-valve, and real-time air quantity is obtained at air-valve
Signal, real-time air quantity are the air-valve that real-time air volume test portion is detected with setpoint frequency when air-valve maintains certain opening angle
Ventilation；
Open area test section 102, open area test section 102 are connected with sliding door, and opening for sliding door is obtained at sliding door
Open area of signal；
Standard Wind Coverage Calculation portion 103, open area signal is received, and according to open area signal and default vent cabinet
Safety surface wind speed carry out outputting standard air volume signal, the ventilation that air-valve needs when standard air quantity is ensures safety surface wind speed；
Air quantity difference judging part 104, real-time air volume signal and standard air volume signal are received, export air-valve control signal, its
In, the control action that air-valve control signal is implemented includes：
When real-time air quantity is in the range of the allowable error value of standard air quantity, the current opening angle of air-valve is maintained；
When real-time air quantity is not in the range of the allowable error value of standard air quantity, the current opening angle of adjustment air-valve, with
So that air quantity is ultimately in the range of allowable error value in real time.
Wherein, above-mentioned real-time air volume test portion 101, open area test section 102, standard Wind Coverage Calculation portion 103 and wind
Amount difference judging part 104 is the concept of broad sense, can be hardware, such as sensor, detector etc., or software.
Specifically, when air-valve is exhaust valve, i.e., when vent cabinet is single wind type vent cabinet, the standard air quantity of exhaust valve
Calculating obtains according to below equation：Q=VS；Wherein, Q is standard air quantity, and V is default safety surface wind speed, and S is sliding door
Open area.
Further, in interior air-replenishing type ventilating cabinet, when air-valve not only include exhaust valve again including benefit air-valve when, benefit air-valve
Standard air quantity be Q2=n Q1, wherein, Q2To mend the standard air quantity of air-valve, n span is [0.65,0.7], it is preferable that
The air quantity regulating effect of vent cabinet is optimal when n value is 0.7, i.e., when the standard air quantity for mending air-valve reaches exhaust valve standard air quantity
When 70%, whole vent cabinet is in optimal ventilation state.
Further, as shown in Figure 1 b, the air-valve control device of the present embodiment also includes：
Lift test section 112, it is connected with sliding door to detect the Lift of sliding door；
Open area calculating part 122, Lift signal is received, and further combined with the total height of sliding door of sliding door and shifting
The width of door, the open area of sliding door is calculated according to below equation：S=(H-h) L；Wherein, S is the opening face of sliding door
Product, H are that sliding door is always high, and h is the Lift of sliding door, and L is the width of sliding door.Specifically, can be examined using displacement transducer
The position signalling of sliding door is surveyed, displacement transducer is connected with sliding door, its Lift is obtained at sliding door, so as to further calculate
Obtain the open area of sliding door, naturally it is also possible to the open area detected using other method.
More specifically, in the standard Wind Coverage Calculation portion 103 of the present embodiment, first according to total high, the sliding door width of sliding door
With the open area that sliding door is highly calculated in real time of sliding door, next open area according to sliding door and default safety surface wind
Standard airflow value is calculated in speed.It may occur to persons skilled in the art that the standard airflow value of sliding door can also be according to it herein
He is calculated with the method that such scheme has same principle.
Preferably, it is necessary to be carried out with frequency set in advance to the real-time air quantity of air-valve in real-time air volume test portion 101
Detection, it is preferred that the setpoint frequency is fixed frequency, can be that the frequency is more suitable when being actual measurement more than or equal to 40ms/ times
Detection frequency, can meet simultaneously data acquisition and energy-conservation of both demand.It is equally possible that the reality according to user
Demand is set.
Further, it is necessary to judge whether real-time airflow value is in standard airflow value in air quantity difference judging part 104
Allowable error value in the range of, the allowable error scope can be set by user, it is preferred that the allowable error value scope can be with
For 0, now when real-time airflow value is higher than standard airflow value, reduce the opening angle of air-valve；When real-time airflow value is less than standard
During airflow value, increase the opening angle of air-valve；When real-time airflow value is equal to standard airflow value, then the current unlatching of air-valve is maintained
Angle is constant.It may occur to persons skilled in the art that when allowable error value scope is set to 0, the best results of regulation and control.
Air-valve control system in the present embodiment, by detecting the real-time ventilation of air-valve and being obtained according to safety surface wind speed
Standard air quantity required for current vent cabinet, real-time airflow value and standard airflow value are contrasted, anti-according to the result of contrast
Feedback carrys out the opening angle of adjusting air valve, is more accurately controlled so as to realize, has very high practical value.
【3rd embodiment】
As shown in Fig. 2 present embodiment discloses a kind of vent cabinet 300, including air-valve control system, the air-valve control system
Air-valve 301, sliding door 302 and air-valve control device 303 including vent cabinet, air-valve 301 are used for the ventilation for adjusting vent cabinet 300
Amount, air-valve control device 303 are connected with air-valve 301 and sliding door 302 respectively, wherein, air-valve control device 303 includes following：
Real-time air volume test portion, real-time air volume test portion are connected with air-valve, and real-time air volume signal is obtained at air-valve, real
Shi Fengliang is the ventilation for the air-valve that real-time air volume test portion is detected with setpoint frequency when air-valve maintains certain opening angle
Amount；
Open area test section, open area test section are connected with sliding door, and the open area of sliding door is obtained at sliding door
Signal；
Standard Wind Coverage Calculation portion, open area signal is received, and according to open area signal and default vent cabinet
Safety surface wind speed comes outputting standard air volume signal, the ventilation that air-valve needs when standard air quantity is ensures safety surface wind speed；
Air quantity difference judging part, real-time air volume signal and standard air volume signal are received, export air-valve control signal, wherein,
The control action that air-valve control signal is implemented includes：
When real-time air quantity is in the range of the allowable error value of standard air quantity, the current opening angle of air-valve is maintained；
When real-time air quantity is not in the range of the allowable error value of standard air quantity, the current opening angle of adjustment air-valve, with
So that air quantity is ultimately in the range of allowable error value in real time.
Wherein, above-mentioned real-time air volume test portion, open area test section, standard Wind Coverage Calculation portion and air quantity difference judge
Portion is the concept of broad sense, can be hardware, such as sensor, detector etc., or software.
Specifically, when air-valve is exhaust valve, i.e., when vent cabinet is single wind type vent cabinet, the standard air quantity of exhaust valve
Calculating obtains according to below equation：Q=VS；Wherein, Q is standard air quantity, and V is default safety surface wind speed, and S is sliding door
Open area.
Further, in interior air-replenishing type ventilating cabinet, when air-valve not only include exhaust valve again including benefit air-valve when, benefit air-valve
Standard air quantity be Q2=n Q1, wherein, Q2To mend the standard air quantity of air-valve, n span is [0.65,0.7], it is preferable that
The air quantity regulating effect of vent cabinet is optimal when n value is 0.7, i.e., when the standard air quantity for mending air-valve reaches exhaust valve standard air quantity
When 70%, whole vent cabinet is in optimal ventilation state.
Further, the air-valve control device of the present embodiment also includes：
Lift test section, it is connected with sliding door to detect the Lift of sliding door；
Open area calculating part, Lift signal is received, and further combined with the total high and sliding door of sliding door of sliding door
Width, the open area of sliding door is calculated according to below equation：S=(H-h) L；Wherein, S is the open area of sliding door,
H is that sliding door is always high, and h is the Lift of sliding door, and L is the width of sliding door.Specifically, can be moved using displacement transducer to detect
The position signalling of door, displacement transducer is connected with sliding door, its Lift is obtained at sliding door, so as to further be calculated
The open area of sliding door, naturally it is also possible to the open area detected using other method.
More specifically, in the standard Wind Coverage Calculation portion of the present embodiment, first according to total high, the sliding door width of sliding door and shifting
The open area that sliding door is highly calculated in real time of door, next open area according to sliding door and default safety surface airspeedometer
Calculation obtains standard airflow value.It may occur to persons skilled in the art that herein the standard airflow value of sliding door can also according to other with
The method that such scheme has same principle is calculated.
Preferably, it is necessary to be examined with frequency set in advance to the real-time air quantity of air-valve in real-time air volume test portion
Survey, it is preferred that the setpoint frequency is fixed frequency, can be that the frequency is more suitable when being actual measurement more than or equal to 40ms/ times
Frequency is detected, demand of both data acquisition and energy-conservation can be met simultaneously.It is equally possible that the actual need according to user
Ask and set.
Further, it is necessary to judge whether real-time airflow value is in standard airflow value in air quantity difference judging part
In the range of allowable error value, the allowable error scope can be set by user, it is preferred that the allowable error value may range from
0, now when real-time airflow value is higher than standard airflow value, reduce the opening angle of air-valve；When real-time airflow value is less than standard wind
During value, increase the opening angle of air-valve；When real-time airflow value is equal to standard airflow value, then the current opening angle of air-valve is maintained
Spend constant.It may occur to persons skilled in the art that when allowable error value scope is set to 0, the best results of regulation and control.
Temperature sensor, humidity sensor and acousto-optic can also be set in the ventilation shaft of the vent cabinet 300 of the present embodiment
Warning device, temperature sensor and humidity sensor are used for the temperature information and humidity information that vent cabinet is detected with setpoint frequency,
And temperature information and humidity information are sent into feed valve control device 303, air-valve control device 303 believes temperature information and humidity
Breath is compared with default temperature range and humidity range respectively, when temperature information and humidity information exceed default temperature model
When enclosing with humidity range, then sound and light alarm is carried out using acoustic-optic alarm.It can specifically be alarmed using audible-visual annunciator, to carry
The user that wakes up is adjusted to temperature and humidity to meet pre-provisioning request.It is preferred that the setpoint frequency is similarly fixed frequency, also may be used
Think more than or equal to 40ms/ times.The vent cabinet of the present embodiment is while air quantity is adjusted to the temperature and humidity in ventilation shaft
Regulated and controled simultaneously, meet the needs of multi-functional regulation and control while energy-conservation purpose is reached, more extensive answer can be applied to
Use occasion.
It is preferred that vent cabinet 300 is additionally provided with man-machine interface 305, for inputting predeterminated frequency, default temperature range and wet
The control information such as scope are spent, and show the status informations such as real-time airflow value, temperature information and humidity information, are easy to man-machine interaction.
In summary, air-valve control device, control system and vent cabinet provided by the utility model, by detecting air-valve
Real-time ventilation and the standard air quantity according to required for safety surface wind speed obtains current vent cabinet, by real-time airflow value and standard wind
Value is contrasted, and is fed back according to the result of contrast come the opening angle of adjusting air valve, is applicable to various air-valves, and exclude
Pipeline air pressure, the interference of indoor air flows and artificial external factor, safer, efficient, energy-conservation, intelligence can be realized
Ventilation is adjusted, and has very high practical value.Above-described embodiment only illustrative principle of the present utility model and its effect,
Not for limitation the utility model.Any person skilled in the art all can be without prejudice to spirit and scope of the present utility model
Under, modifications and changes are carried out to above-described embodiment.Therefore, such as those of ordinary skill in the art without departing from this
Spirit and all equivalent modifications completed under technological thought or change disclosed in utility model, should be by of the present utility model
Claim is covered.
Claims (10)
1. a kind of air-valve control device, the air-valve are arranged on vent cabinet, the vent cabinet is provided with sliding door, it is characterised in that
Including：
Real-time air volume test portion, the air volume test portion in real time are connected with the air-valve, and real-time wind is obtained at the air-valve
Measure signal, it is described in real time air quantity be when the air-valve maintain certain opening angle when, it is described in real time air volume test portion with set frequency
The ventilation for the air-valve that rate detects；
Open area test section, the open area test section are connected with the sliding door, and the shifting is obtained at the sliding door
The open area signal of door；
Standard Wind Coverage Calculation portion, receives the open area signal, and according to the open area signal and default described
The safety surface wind speed of vent cabinet comes outputting standard air volume signal, the wind when standard air quantity is ensures the safety surface wind speed
The ventilation that valve needs；
Air quantity difference judging part, air volume signal and the standard air volume signal in real time are received, exports air-valve control signal, its
In, the control action that the air-valve control signal is implemented includes：
When the real-time air quantity is in the range of the allowable error value of the standard air quantity, the current opening angle of the air-valve is maintained
Degree；
When the real-time air quantity is not in the range of the allowable error value of the standard air quantity, the current unlatching of the air-valve is adjusted
Angle, to cause the air quantity to be in real time ultimately in the range of the allowable error value.
2. air-valve control device as claimed in claim 1, it is characterised in that when the air-valve is exhaust valve, the air draft
The standard Wind Coverage Calculation of valve is carried out according to below equation：
Q1=VS；
Wherein, Q1For the standard air quantity of the exhaust valve, V is default safety surface wind speed, and S is the open area of the sliding door.
3. air-valve control device as claimed in claim 2, it is characterised in that described when the air-valve also includes mending air-valve
The standard air quantity for mending air-valve is Q2=n Q1, wherein, Q2For the standard air quantity of the benefit air-valve, n span for [0.65,
0.7]。
4. the air-valve control device as described in any in claim 1-3, it is characterised in that the open area test section enters one
Step includes：
Lift test section, it is connected with the sliding door to detect the Lift of the sliding door；
Open area calculating part, Lift signal is received, and it is total high and described further combined with the sliding door of the sliding door
The width of sliding door, the open area of the sliding door is calculated according to below equation：
S=(H-h) L；
Wherein, S is the open area of the sliding door, and H is that sliding door is always high, and h is the Lift of the sliding door, and L is the width of sliding door
Degree.
5. air-valve control device as claimed in claim 1, it is characterised in that the setpoint frequency is more than or equal to 40ms/
It is secondary.
6. air-valve control device as claimed in claim 1, it is characterised in that in the air quantity difference judging part, work as judgement
The air quantity in real time not in the allowable error value scope of the standard air quantity, move by the control that the air-valve control signal is implemented
Specifically include：
If the air quantity in real time is more than the peak of the allowable error value scope of the standard air quantity, reduce the air-valve
Opening angle；
If the air quantity in real time is less than the minimum of the allowable error value scope of the standard air quantity, increase the air-valve
Opening angle.
7. the air-valve control device as described in claim 1 or 6, it is characterised in that the allowable error value of the standard air quantity is
0。
8. a kind of air-valve control system, the air-valve are arranged on vent cabinet, the vent cabinet is provided with sliding door, it is characterised in that
Including the air-valve control device as described in any in claim 1-7.
9. a kind of vent cabinet, which is provided with air-valve and sliding door, it is characterised in that also including air-valve control as claimed in claim 8
System processed.
10. vent cabinet as claimed in claim 9, it is characterised in that the vent cabinet is additionally provided with man-machine interface, is controlled for inputting
Information processed and the status information for showing the vent cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566134.9U CN206810835U (en) | 2017-05-19 | 2017-05-19 | Air-valve control device, control system and vent cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566134.9U CN206810835U (en) | 2017-05-19 | 2017-05-19 | Air-valve control device, control system and vent cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206810835U true CN206810835U (en) | 2017-12-29 |
Family
ID=60756902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720566134.9U Withdrawn - After Issue CN206810835U (en) | 2017-05-19 | 2017-05-19 | Air-valve control device, control system and vent cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206810835U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944449A (en) * | 2017-05-19 | 2017-07-14 | 倚世节能科技（上海）有限公司 | Air-valve control method, control device, control system and vent cabinet |
| CN112344564A (en) * | 2019-08-07 | 2021-02-09 | 广东美的环境电器制造有限公司 | Control method, control device, control equipment and computer storage medium |
| CN114226391A (en) * | 2021-12-21 | 2022-03-25 | 天长市科信电子有限公司 | Ventilation cabinet air volume and sliding door control method and system |
| CN115111645A (en) * | 2022-06-27 | 2022-09-27 | 美埃(中国)环境科技股份有限公司 | Air supply outlet with constant air volume closed-loop control function and air volume control method thereof |
-
2017
- 2017-05-19 CN CN201720566134.9U patent/CN206810835U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944449A (en) * | 2017-05-19 | 2017-07-14 | 倚世节能科技（上海）有限公司 | Air-valve control method, control device, control system and vent cabinet |
| WO2018209779A1 (en) * | 2017-05-19 | 2018-11-22 | 倚世节能科技（上海）有限公司 | Air valve control method, control device, control system, and fume hood |
| CN106944449B (en) * | 2017-05-19 | 2019-12-13 | 倚世节能科技（上海）有限公司 | air valve control method, control device, control system and fume hood |
| CN112344564A (en) * | 2019-08-07 | 2021-02-09 | 广东美的环境电器制造有限公司 | Control method, control device, control equipment and computer storage medium |
| CN112344564B (en) * | 2019-08-07 | 2022-03-11 | 广东美的环境电器制造有限公司 | Control method, control device, control equipment and computer storage medium |
| CN114226391A (en) * | 2021-12-21 | 2022-03-25 | 天长市科信电子有限公司 | Ventilation cabinet air volume and sliding door control method and system |
| CN115111645A (en) * | 2022-06-27 | 2022-09-27 | 美埃(中国)环境科技股份有限公司 | Air supply outlet with constant air volume closed-loop control function and air volume control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171229 Effective date of abandoning: 20191213 |