WO2018209779A1 - Air valve control method, control device, control system, and fume hood - Google Patents

Air valve control method, control device, control system, and fume hood Download PDF

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Publication number
WO2018209779A1
WO2018209779A1 PCT/CN2017/092084 CN2017092084W WO2018209779A1 WO 2018209779 A1 WO2018209779 A1 WO 2018209779A1 CN 2017092084 W CN2017092084 W CN 2017092084W WO 2018209779 A1 WO2018209779 A1 WO 2018209779A1
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WIPO (PCT)
Prior art keywords
air volume
damper
sliding door
real
time
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Application number
PCT/CN2017/092084
Other languages
French (fr)
Chinese (zh)
Inventor
阮红正
唐光野
谢长军
卢丙利
Original Assignee
倚世节能科技(上海)有限公司
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Publication of WO2018209779A1 publication Critical patent/WO2018209779A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023Fume cabinets or cupboards, e.g. for laboratories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/0001Control or safety arrangements for ventilation

Definitions

  • the invention relates to the field of control regulation systems, in particular to a damper control method, a control device, a control system and a fume hood.
  • the fume hood is an integral part of the laboratory ventilation design. In order to keep laboratory workers from inhaling or swallowing some toxic, pathogenic or toxic chemicals and organisms, there should be good ventilation in the laboratory. To prevent the absorption of some vapors, gases and particulates (smoke, soot, dust and aerosols), the pollutants must be removed by means of a fume hood, hood or partial ventilation.
  • the speed at which the airflow enters the fume hood through the operation surface of the fume hood is called the surface wind speed.
  • the fume hood adjusts the ventilation of the cabinet through the damper.
  • the traditional damper adjusts the ventilation volume manually, and the current damper can also pass the detection.
  • the surface speed of the fume hood adjusts the damper.
  • the Chinese patent document with the patent number CN201010518717.7 discloses a laboratory variable air volume fume hood control system, which is characterized in that it comprises a fume hood, a venturi valve mounted on the exhaust pipe of the fume hood, a displacement sensor, and a door.
  • High alarm switch surface wind speed monitoring and control system, fan frequency conversion system, valve controller and valve actuator, surface wind speed monitoring and control system including surface wind speed sensor and variable air volume controller, variable air volume controller for real-time measurement of fume hood opening,
  • the surface wind speed sensor measures the surface wind speed in real time and converts it into a voltage signal and transmits it to the variable air volume controller.
  • the variable air volume controller compares the actual value of the surface wind speed with the set value.
  • variable air volume The controller outputs a signal to the valve controller, and the valve controller outputs a signal to the valve actuator.
  • the valve actuator drives the piston of the venturi valve to move up and down, changes the sectional area of the ventilation, and adjusts the ventilation air volume.
  • the venturi valve includes a valve body, a two-link seat of the device in the valve body, a tapered piston, a connecting rod and a control rod.
  • the valve body cavity is provided with a reduced diameter suitable for the tapered piston, and the tapered piston passes through the piston sleeve.
  • the piston cap and the spring cap are mounted at one end of the connecting rod, and one end of the control rod is hinged to the connecting rod through the guiding rod, and the other end of the control rod is connected with the valve actuator.
  • the advantages of the above surface wind speed monitoring and control system include: 1) The valve adopts a variable air volume venturi valve, which can independently control the variable air volume of a single fume hood according to design requirements, and effectively discharge toxic gases and particles from pollution sources in a timely manner.
  • the surface wind speed is not affected by the pipeline air pressure, and is not interfered by the inside and outside of the fume hood; 3), when the cabinet When the door moves up and down, it can automatically control the variable air volume valve, so that the surface wind speed is stable at 0.5m/s, the valve reaction speed should be fast response, and the balance time is less than 1 second; the variable air volume control valve is required to measure the surface wind speed, and the control adjustment method should be For closed loop control, the control panel directly displays the surface wind speed. 4) Automatically adjust the exhaust air volume to meet the safety surface wind speed requirements under different conditions.
  • the minimum, maximum exhaust air volume or surface wind speed setting value of the valve can be set through the control panel, and the required minimum exhaust volume can be maintained or Face wind speed; 5)
  • the unfavorable situation such as low surface wind speed is too low, the sound and light alarm should be automatically issued.
  • the controller should have an emergency button. When a fire or unexpected emergency occurs, press this button and the damper should be pressed. The maximum air volume is running and an alarm is issued.
  • the laboratory variable air volume fume control system uses the surface wind speed sensor to measure the surface wind speed in real time, and converts it into a voltage signal and transmits it to the variable air volume controller.
  • the variable air volume controller is actually based on the surface wind speed.
  • the value is compared with the set value, that is, the opposite wind speed value is detected and compared, thereby adjusting the piston of the venturi valve according to the comparison result, changing the sectional area of the ventilation, and finally achieving the effect of adjusting the ventilation amount.
  • This type of control requires the use of a surface wind speed sensor to directly detect the surface wind speed of the fume hood and compare the actual surface wind speed with the set value.
  • the applicable valve types are limited and are susceptible to ventilation pipe air pressure, indoor air flow and human external factors. The interference is not high.
  • an intelligent control type fume hood which belongs to the field of experimental equipment, including a wind speed sensor, an air exhaust device, a supplement air device, a control center, a temperature sensor and a pressure sensor. Both the exhaust device and the air supply device are driven by frequency conversion and are connected to the control center.
  • the air speed sensor, temperature sensor and pressure sensor are arranged in the fume hood, and the airflow and air pressure parameters in the fume hood can be monitored at any time, and feedback is timely
  • the control center which in turn controls the air volume of the wind and the exhaust.
  • the invention can realize closed-loop automatic regulation, high safety factor, energy saving and environmental protection.
  • the temperature, pressure and wind speed parameters are set through the electronic touch screen, and then the wind speed sensor feeds back the wind speed at the air exhaust device to the control center.
  • the control center automatically adjusts the air supply volume of the air supply device through the programmed program.
  • the temperature sensor and the pressure sensor simultaneously feed back the corresponding parameters to the control center to detect whether the test state is normal in real time, and can realize the operation of the door opening by controlling the operation door motor. Size, adjust the amount of air.
  • the invention does not specifically describe how the control center automatically adjusts the amount of replenishment of the air supplement device, and further technical improvement is required.
  • an object of the present invention is to provide a damper control method, in which a damper is disposed on a fume hood.
  • the fume hood is equipped with a sliding door, including the following steps: real-time air volume detection, when the damper maintains a certain opening angle, the real-time air volume of the damper is detected at a set frequency; the standard air volume is calculated, and the opening area of the sliding door of the fume hood is detected, according to The opening area and the preset safety surface wind speed, calculate the standard air volume required for the damper to ensure the safety surface wind speed; determine the air volume difference, determine whether the real-time air volume value is within the allowable error value of the standard air volume, and if so, maintain the damper The current opening angle; if not, adjust the opening angle of the damper such that the real-time air volume is ultimately within the allowable error value range.
  • the damper control method calculates the standard air volume according to the sliding door opening area and the safety surface wind speed, compares the real-time air volume of the damper with the standard air volume, and adjusts the opening angle of the damper according to the comparison result, which can be applied to various dampers and is excluded.
  • the interference of pipeline air pressure, indoor air flow and human external factors can achieve safer, more efficient, energy-saving and intelligent ventilation adjustment.
  • the damper further includes a supplemental damper
  • the opening height of the sliding door is first detected, and the opening area of the sliding door is calculated according to the opening height of the sliding door.
  • the opening area of the sliding door is calculated according to the opening height of the sliding door.
  • the set frequency is greater than or equal to 40 ms/time. This frequency ensures that the damper can better adjust the ventilation volume, accurately control the surface wind speed in real time, and avoid the energy loss caused by frequent adjustment.
  • the opening angle of the damper is decreased; If the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the opening angle of the damper is increased.
  • the allowable error value of the standard air volume is zero. That is, the real-time air volume value is equal to the standard air volume value, so as to maintain the optimal ventilation and achieve the best adjustment effect.
  • the invention also discloses a damper control device, the damper is arranged on the fume hood, the fume hood is provided with a sliding door, comprising: a real-time air volume detecting unit, the real-time air volume detecting unit is connected with the damper, and the real-time air volume is obtained from the damper
  • the signal, the real-time air volume is the ventilation amount of the damper detected by the real-time air volume detecting unit at the set frequency when the damper maintains a certain opening angle
  • the area detecting unit, the opening area detecting unit is connected with the sliding door, and the opening area signal of the sliding door is obtained from the sliding door;
  • the standard air volume calculating unit receives the opening area signal, and according to the opening area signal and the safety surface of the preset fume hood The wind speed is used to output the standard air volume signal.
  • the standard air volume is the ventilation required for the wind valve when the safety surface wind speed is ensured;
  • the air volume difference judgment unit receives the real-time air volume signal and the standard air volume signal, and outputs the damper control signal, wherein the damper control signal is
  • the control actions implemented include:
  • the damper is an exhaust valve
  • the opening area detecting portion includes: an opening height detecting portion connected to the sliding door to detect the opening height of the sliding door; the opening area calculating portion receiving the opening height signal, and further combining the sliding door total height and the sliding door
  • the set frequency is greater than or equal to 40 ms/time.
  • the control action performed by the damper control signal specifically includes: if the real-time air volume is greater than the standard air volume, the maximum allowable error value range The value reduces the opening angle of the damper; if the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the opening angle of the damper is increased.
  • the allowable error value of the standard air volume is zero.
  • the invention also provides a damper control device, the damper is arranged on the fume hood, the fume hood is provided with a sliding door, and comprises the following module: a real-time air volume detecting module, configured to detect the set frequency when the damper maintains a certain opening angle The real-time air volume of the damper; the open area detection module is used to detect the opening area of the sliding door of the fume hood; the standard air volume calculation module is used to calculate the damper required to ensure the safety surface wind speed according to the opening area and the preset safety surface wind speed The standard air volume; the air volume difference judgment module is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the current opening angle of the damper So that the real-time air volume is finally within the allowable error value range.
  • a real-time air volume detecting module configured to detect the set frequency when the damper maintains a certain opening angle
  • the damper further includes a supplemental damper
  • the set frequency is greater than or equal to 40 ms/time.
  • the air volume difference judgment module when the real-time air volume is not within the allowable error value range of the standard air volume, if the real-time air volume is greater than the highest value of the allowable error value range of the standard air volume, the current opening angle of the damper is decreased; If the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the current opening angle of the damper is increased.
  • the allowable error value of the standard air volume is zero.
  • the invention also discloses a damper control system, the damper is arranged on the fume hood, the fume hood is provided with a sliding door, comprising the damper control device as described above, and the damper control device is respectively connected with the damper and the sliding door.
  • the present invention also provides a fume hood comprising the damper control system as described above.
  • the fume hood is further provided with a human-machine interface for inputting control information and displaying status information of the fume hood.
  • the damper control method, the damper control device, the damper control system, and the fume hood provided by the present invention can be applied to various dampers, and the interference of the pipeline air pressure, the indoor air flow, and human external factors is eliminated. It can achieve safer, more efficient, energy-saving and intelligent ventilation adjustment.
  • FIG. 1 is a flow chart showing a method of controlling a damper according to a first embodiment of the present invention
  • FIG. 2 is another flow chart of a method of controlling a damper according to a first embodiment of the present invention
  • 3a is a schematic diagram showing the module connection of a damper control device according to a second embodiment of the present invention.
  • 3b is a schematic diagram showing the module connection of another damper control device according to a second embodiment of the present invention.
  • 4a is a schematic diagram showing the module connection of a damper control device according to a third embodiment of the present invention.
  • 4b is a schematic diagram showing the module connection of another damper control device according to a third embodiment of the present invention.
  • Fig. 5 is a schematic view showing the structural connection of various parts of a fume hood according to a seventh embodiment of the present invention.
  • connection may be a wired connection, or It is a wireless connection, which may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be two components. Internal connectivity.
  • connecting may be a wired connection, or It is a wireless connection, which may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be two components. Internal connectivity.
  • the present invention discloses a damper control method.
  • the damper is disposed on a fume hood, and the fume hood is provided with a sliding door, including the following steps:
  • Step S10 real-time air volume detection, when the damper maintains a certain opening angle, detecting the real-time air volume of the damper at a set frequency;
  • Step S20 Turn on the area detection to detect the opening area of the sliding door of the fume hood
  • Step S30 calculating the standard air volume, and calculating a standard air volume required for the wind valve when ensuring the wind speed of the safety surface according to the opening area and the preset safety surface wind speed;
  • Step S40 determining the air volume difference value, determining whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintaining the current opening angle of the damper; if not, adjusting the opening angle of the damper to make the real-time air volume Within the allowable error value range.
  • an air volume detecting device for detecting the ventilation amount may be disposed in the damper, and the air volume detecting device is connected with the damper, and the real-time air volume of the damper is obtained from the damper, and the air volume detecting device is A wind gauge or an anemometer can usually be used.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7].
  • the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
  • the damper control method of this embodiment further includes:
  • Step S21 Turn on the height detection to detect the opening height of the sliding door
  • a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding
  • the opening area of the sliding door is first calculated according to the total height of the sliding door, the sliding door width and the real-time height of the sliding door, and secondly, according to the opening area of the sliding door and the pre-planning
  • the set wind speed is calculated from the safety surface. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume of the damper needs to be detected at a preset frequency.
  • the set frequency is a fixed frequency, which may be 40 ms/time or more, the frequency.
  • the detection frequency which is more suitable for the actual measurement, it can meet the requirements of both data acquisition and energy conservation. Similarly, it can be set according to the actual needs of the user.
  • the error range can be set by the user.
  • the allowable error value can be 0.
  • the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume
  • the current opening angle of the damper is maintained.
  • the damper control method in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper, it can be applied to a variety of dampers such as Bernoulli variable air volume control valve, venturi valve, butterfly valve, etc. In addition to pipeline air pressure, indoor air flow and human external factors, it can achieve more precise control and has high practical value.
  • the embodiment discloses a damper control device 100.
  • the damper is disposed on a fume hood, and the fume hood is provided with a sliding door, including:
  • the real-time air volume detecting unit 101 connects the damper to the damper, and acquires a real-time air volume signal from the damper.
  • the real-time air volume is the wind detected by the real-time air volume detecting unit at the set frequency when the damper maintains a certain opening angle.
  • Opening the area detecting unit 102, the opening area detecting unit 102 is connected to the sliding door, and acquiring an opening area signal of the sliding door from the sliding door;
  • the standard air volume calculation unit 103 receives the open area signal, and outputs a standard air volume signal according to the open area signal and the preset safety surface wind speed of the fume hood, and the standard air volume is the required ventilation amount of the air valve when the safety surface wind speed is ensured;
  • the air volume difference determining unit 104 receives the real-time air volume signal and the standard air volume signal, and outputs a damper control signal, wherein the control actions performed by the damper control signal include:
  • the real-time air volume detecting unit 101, the opening area detecting unit 102, the standard air volume calculating unit 103, and the air volume difference determining unit 104 are all broad concepts, and may be hardware, such as a sensor, a detector, or the like, or may be software.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7].
  • the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
  • the damper control device of this embodiment further includes:
  • the opening area calculating unit 122 receives the opening height signal, and further combines the sliding door total height and the sliding door
  • a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding
  • the opening area of the sliding door is first calculated according to the total height of the sliding door, the sliding door width, and the real-time height of the sliding door, and secondly, according to the opening area of the sliding door and the pre-planning
  • the set wind speed is calculated from the safety surface. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume detecting unit 101 it is necessary to detect the real-time air volume of the damper at a preset frequency.
  • the set frequency is a fixed frequency, which may be 40 ms/time or more, and the frequency is The more suitable detection frequency in the actual measurement can meet the requirements of both data acquisition and energy saving. Similarly, it can be set according to the actual needs of the user.
  • the allowable error value range can be set by the user.
  • the allowable error value range can be 0, when the real-time air volume value is higher than the standard air volume value, reduce the opening angle of the damper; when the real-time air volume value is lower than the standard air volume value, increase the opening angle of the damper; when the real-time air volume value is equal to the standard air volume value At the same time, the current opening angle of the damper is maintained.
  • the regulation effect is optimal when the allowable error value range is set to zero.
  • the damper control device in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper can be applied to Bernoulli variable air volume control valve, venturi valve, butterfly valve and other dampers, eliminating the interference of pipeline air pressure, indoor air flow and human external factors, which can achieve more precise The control has high practical value.
  • a third embodiment of the present invention provides a damper control device 200.
  • the damper is disposed on a fume hood, and the fume hood is provided with a sliding door.
  • the damper control device 200 includes the following modules:
  • the real-time air volume detecting module 201 is configured to detect the real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
  • the opening area detecting module 202 is configured to detect an opening area of the sliding door of the fume hood
  • the standard air volume calculation module 203 is configured to calculate a safety surface wind according to the opening area and the preset safety surface wind speed.
  • the air volume difference determining module 204 is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if yes, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper to enable real-time The air volume is ultimately within the allowable error range.
  • an air volume detecting device for detecting a ventilation amount may be provided in the damper to detect a real-time air volume of the damper, and the air volume detecting device and the damper control device 200 of the present embodiment are real-time.
  • the air volume detecting module 201 is connected, and the numerical signal of the detected ventilation amount is transmitted to the real-time air volume detecting module 201 in real time, and the air volume detecting is usually performed by using a wind gauge or an anemometer.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7].
  • the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
  • the damper control device of the embodiment may specifically include: an opening height detecting module 212 for detecting an opening height of the sliding door; and a sliding door area calculating module 222 for further combining the opening height with the sliding door shifting
  • a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening height of the door, thereby calculating the opening area of the sliding door.
  • the standard air volume calculation module 202 first calculates the opening area of the sliding door according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly, according to the opening area of the sliding door and the preset safety surface wind speed. Standard air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume of the damper needs to be detected at a preset frequency.
  • the set frequency is a fixed frequency, which may be greater than or equal to 40 ms/time, and the frequency is measured.
  • a more suitable detection frequency can meet both the data acquisition and energy saving requirements. Similarly, it can be set according to the actual needs of the user.
  • the air volume difference determining module 204 it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the allowable error value range can be set by the user.
  • the allowable error value can be 0.
  • the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume
  • the allowable error value is set to zero, the effect of the regulation is optimal.
  • the damper control device in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper enables more precise control and has high practical value.
  • This embodiment discloses another damper control device.
  • the damper is disposed on a fume hood.
  • the fume hood is provided with a sliding door, and includes a memory and a processor.
  • the memory stores a damper control program executable by a computer, and the processor is connected to the memory. And configured to execute the damper control program:
  • Real-time air volume detection when the damper maintains a certain opening angle, the real-time air volume of the damper is detected at a set frequency
  • Open area detection to detect the opening area of the sliding door of the fume hood
  • the standard air volume calculation calculates the standard air volume required by the damper to ensure the safety surface wind speed according to the opening area and the preset safety surface wind speed;
  • an air volume detecting device for detecting the ventilation amount may be provided in the damper to detect the real-time air volume of the damper, and the air volume detecting device is connected to the damper control device of the embodiment, and the detecting The numerical signal of the amount of ventilation to be sent to the damper control device in real time, usually using a wind gauge or an anemometer for air volume detection.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7].
  • the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
  • the processor in the damper control device of the embodiment is configured to execute the damper control program, further comprising: opening the height detection, detecting the opening height of the sliding door; calculating the opening area, further combining the opening height with the shifting of the sliding door
  • a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the
  • the door opening sectional area of the sliding door is first calculated according to the total height of the sliding door, the sliding door width and the real-time height of the sliding door, and secondly, according to the opening sectional area of the sliding door and the preset.
  • the safety surface wind speed is calculated to obtain the standard air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume of the damper needs to be detected at a preset frequency.
  • the set frequency is a fixed frequency, which may be 40 ms/time or more, and the frequency is suitable for actual measurement.
  • the detection frequency can meet the requirements of both data acquisition and energy saving. Similarly, it can be set according to the actual needs of the user.
  • the allowable error value can be 0, that is, when When the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, the maintenance is maintained. The current opening angle of the damper is unchanged.
  • the damper control device in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper enables more precise control and has high practical value.
  • a fifth embodiment of the present invention discloses a non-volatile storage medium on which a damper control program is stored, and a damper control program is executed by a computer to implement a damper control method, including:
  • Command 1 real-time air volume detection, when the damper maintains a certain opening angle, the real-time air volume of the damper is detected at a set frequency;
  • Command 2 open area detection, and detect the opening area of the sliding door of the fume hood
  • an air volume detecting device for detecting a ventilation amount may be provided in the damper to detect a real-time air volume of the damper, and the air volume detecting device is connected to the damper control device of the embodiment, and will detect The numerical signal of the ventilation quantity is transmitted to the damper control device in real time, and the air volume meter or the anemometer is usually used for the air volume detection.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7], and preferably, the value of n is 0.7, and the air volume adjustment effect of the fume hood is optimal.
  • a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the
  • the opening area of the sliding door is first calculated according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly according to the opening area of the sliding door and the preset safety surface.
  • the wind speed is calculated to obtain the standard air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume of the damper needs to be detected at a preset frequency.
  • the set frequency is a fixed frequency, which may be 40 ms/time or more, and the frequency is suitable for actual measurement.
  • the detection frequency can meet the requirements of both data acquisition and energy saving. Similarly, it can be set according to the actual needs of the user.
  • the error range can be set by the user.
  • the allowable error value range can be 0, that is, when real-time Air volume When the value is higher than the standard air volume value, the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, the damper is maintained. The current opening angle is unchanged.
  • the non-volatile storage medium in the embodiment compares the real-time air volume value with the standard air volume value by detecting the real-time ventilation amount of the damper and obtaining the standard air volume required by the current fume hood according to the safety surface wind speed, according to the comparison result. Feedback to adjust the opening angle of the damper, which enables more precise control and high practical value.
  • a sixth embodiment of the present invention discloses a damper control system including a damper and a sliding door of a fume hood, and a damper control device, wherein the damper control device is respectively connected with a damper and a sliding door, wherein the damper
  • the control unit includes the following modules:
  • the real-time air volume detecting module is configured to detect the real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
  • the standard air volume calculation module is configured to calculate a standard air volume required for the wind valve when the safety surface wind speed is ensured according to the opening area and the preset safety surface wind speed;
  • the air volume difference determining module is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper and repeat the real-time The air volume detection step until the real-time air volume is within the allowable error value range.
  • an air volume detecting device for detecting a ventilation amount may be provided in the damper to detect a real-time air volume of the damper, and the air volume detecting device and the air volume detecting module in the damper control device of the embodiment Connected and transmitted the detected numerical value of the ventilation quantity to the air volume detection module in real time, usually using a wind gauge or an anemometer for air volume detection.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7], and preferably, the value of n is 0.7, and the air volume adjustment effect of the fume hood is optimal.
  • a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement.
  • the opening area of the door can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for
  • the standard air volume calculation module first calculates the opening area of the sliding door according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly calculates the standard according to the opening area of the sliding door and the preset safety surface wind speed. Air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume of the damper needs to be detected at a preset frequency.
  • the set frequency is a fixed frequency, which may be greater than or equal to 40 ms/time, and the frequency is actually measured.
  • Appropriate detection frequency can meet both data acquisition and energy saving requirements. Similarly, it can be set according to the actual needs of the user.
  • the air volume difference determining module it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the error range can be set by the user.
  • the allowable error value range can be 0. That is, when the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is decreased; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, Then keep the current opening angle of the damper unchanged.
  • the allowable error value is set to zero, the effect of the regulation is optimal.
  • the damper control system in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper enables more precise control and has high practical value.
  • a seventh embodiment of the present invention discloses a fume hood 300 including a damper control system including a damper 301, a sliding door 302 and a damper control device 303, and a damper of the fume hood.
  • 301 is used to adjust the ventilation of the fume hood 300
  • the damper control device 303 is connected to the damper 301 and the sliding door 302, respectively, wherein the damper control device 303 comprises the following modules:
  • the real-time air volume detecting module is configured to detect the real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
  • Standard air volume calculation module for calculating the wind speed of the safety surface according to the opening area and the preset safety surface wind speed The standard air volume required by the damper;
  • the air volume difference determining module is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper and repeat the real-time The air volume detection step until the real-time air volume is within the allowable error value range.
  • an air volume detecting device for detecting the ventilation amount may be provided in the damper 301 to detect the real-time air volume of the damper, and the real-time air volume of the air volume detecting device and the damper control device 303 of the present embodiment
  • the air volume detecting module is connected, and the numerical signal of the detected ventilation amount is transmitted to the air volume detecting module in real time, and the air volume measuring device or the anemometer is usually used for air volume detecting.
  • the damper is an exhaust vent valve
  • the ventilating cabinet is a single exhaust type ventilating cabinet
  • the standard air volume, n has a value range of [0.65, 0.7], and preferably, the value of n is 0.7, and the air volume adjustment effect of the fume hood is optimal.
  • the damper control system of the fume hood 300 of the embodiment further includes: an opening height detecting module for detecting the opening height of the sliding door; an opening area calculation module, further combining the opening height with the total height and movement of the sliding door
  • the displacement sensor 304 can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting The opening area of the sliding door.
  • the standard air volume calculation module first calculates the opening area of the sliding door according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly calculates the standard according to the opening area of the sliding door and the preset safety surface wind speed. Air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
  • the real-time air volume of the damper needs to be detected at a preset frequency.
  • the set frequency is a fixed frequency, which may be greater than or equal to 40 ms/time, and the frequency is actually measured.
  • Appropriate detection frequency can meet both data acquisition and energy saving requirements. Similarly, it can be set according to the actual needs of the user.
  • the error range can be set by the user.
  • the allowable error value range can be 0, that is, when the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is reduced; When the air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, the current opening angle of the damper is maintained.
  • the temperature ventilation sensor, the humidity detection module, and the sound and light alarm device may be disposed in the ventilation duct of the fume hood 300 of the embodiment.
  • the temperature sensor and the humidity sensor are used to detect the temperature information and the humidity information of the fume hood at a set frequency, and the temperature is The information is sent to the damper control device 303, and the damper control device 303 compares the temperature information and the humidity information with a preset temperature range and a humidity range, respectively, when the temperature information and the humidity information exceed a preset temperature range and a humidity range.
  • the sound and light alarm device is used for sound and light alarm. Specifically, an audible and visual alarm can be used to alert the user to adjust the temperature and humidity to meet predetermined requirements.
  • the set frequency is also a fixed frequency, and may be 40 ms/time or more.
  • the fume hood of the present embodiment simultaneously regulates the temperature and humidity in the ventilation duct while adjusting the air volume, and meets the requirements of multi-functional regulation while achieving the purpose of energy saving, and can be applied to a wider range of applications.
  • the fume hood 300 is further provided with a man-machine interface 305 for inputting control information such as a preset frequency, a preset temperature range and a humidity range, and displaying status information such as real-time air volume value, temperature information, and humidity information, which is convenient for a person. Machine interaction.
  • control information such as a preset frequency, a preset temperature range and a humidity range
  • status information such as real-time air volume value, temperature information, and humidity information
  • the present invention provides a damper control method, a control device, a control system, a non-volatile storage medium, and a fume hood, which are required to obtain the current fume hood by detecting the real-time ventilation of the damper and the wind speed according to the safety surface.
  • the standard air volume compares the real-time air volume value with the standard air volume value, and adjusts the opening angle of the damper according to the feedback of the comparison result. It can be applied to various dampers, and excludes the pipeline air pressure, indoor air flow and human external factors. Interference can achieve safer, more efficient, energy-saving, intelligent ventilation adjustment, and has high practical value.

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Abstract

An air valve control method, control device, control system, and fume hood. The air valve is provided on the fume hood, and the fume hood is provided with a movable door. The control method comprises: performing real-time airflow measurement (101): when the air valve continues to have a certain opening angle, measuring a real-time airflow value at a predetermined frequency; reference airflow calculation: measuring an opening area of a movable door (102), and calculating, according to the opening area and a predetermined safety face velocity, a reference airflow required for the air valve to ensure the safe face velocity (103); and airflow difference determination (104): determining whether the real-time airflow value is within a tolerance range of the reference airflow, and if so, maintaining the opening angle of the air valve, or else adjusting the angle of the air value to enable the real-time airflow to fall within the tolerance range. The air valve control method enables safe, highly efficient, energy-saving, and intelligent ventilation regulation.

Description

风阀控制方法、控制装置、控制系统和通风柜Damper control method, control device, control system and fume hood 技术领域Technical field
本发明涉及控制调节系统领域,尤其是一种风阀控制方法、控制装置、控制系统和通风柜。The invention relates to the field of control regulation systems, in particular to a damper control method, a control device, a control system and a fume hood.
背景技术Background technique
通风柜是实验室通风设计中不可缺少的一个组成部分。为了使实验室工作人员不吸入或不咽入一些有毒的、可致病的或毒性不明的化学物质和有机体,实验室中应有良好的通风。为阻止一些蒸气、气体和微粒(烟雾、煤烟、灰尘和气悬体)的吸收,污染物质须用通风柜、通风罩或局部通风的方法除去。气流经过通风柜操作面进入通风柜的速度称为面风速,通风柜通过风阀来调节柜体的通风量,传统的风阀是通过手动方式调节通风量,而目前的风阀也可以通过检测通风柜的面风速来对风阀进行调节。The fume hood is an integral part of the laboratory ventilation design. In order to keep laboratory workers from inhaling or swallowing some toxic, pathogenic or toxic chemicals and organisms, there should be good ventilation in the laboratory. To prevent the absorption of some vapors, gases and particulates (smoke, soot, dust and aerosols), the pollutants must be removed by means of a fume hood, hood or partial ventilation. The speed at which the airflow enters the fume hood through the operation surface of the fume hood is called the surface wind speed. The fume hood adjusts the ventilation of the cabinet through the damper. The traditional damper adjusts the ventilation volume manually, and the current damper can also pass the detection. The surface speed of the fume hood adjusts the damper.
例如专利号为CN201010518717.7的中国专利文件公开了一种实验室变风量通风柜控制系统,其特征在于:包括通风柜、安装在通风柜的排风支管上的文丘里阀、位移传感器、门高报警开关、面风速监测及控制系统、风机变频系统、阀门控制器及阀门执行器,面风速监测及控制系统包括面风速传感器及变风量控制器,变风量控制器实时测量通风柜开度,同时面风速传感器实时测量面风速,并将其转化成电压信号传给变风量控制器,变风量控制器根据面风速实际值与设定值进行比较,如果风速不在设定值范围内,变风量控制器向阀门控制器输出信号,阀门控制器再向阀门执行器输出信号,阀门执行器驱动文丘里阀的活塞上下移动,改变通风截面积,调节通风风量。For example, the Chinese patent document with the patent number CN201010518717.7 discloses a laboratory variable air volume fume hood control system, which is characterized in that it comprises a fume hood, a venturi valve mounted on the exhaust pipe of the fume hood, a displacement sensor, and a door. High alarm switch, surface wind speed monitoring and control system, fan frequency conversion system, valve controller and valve actuator, surface wind speed monitoring and control system including surface wind speed sensor and variable air volume controller, variable air volume controller for real-time measurement of fume hood opening, At the same time, the surface wind speed sensor measures the surface wind speed in real time and converts it into a voltage signal and transmits it to the variable air volume controller. The variable air volume controller compares the actual value of the surface wind speed with the set value. If the wind speed is not within the set value range, the variable air volume The controller outputs a signal to the valve controller, and the valve controller outputs a signal to the valve actuator. The valve actuator drives the piston of the venturi valve to move up and down, changes the sectional area of the ventilation, and adjusts the ventilation air volume.
上述文丘里阀包括阀体、装置在阀体内的两连杆座、锥形活塞、连杆及控制杆,阀体内腔设有与锥形活塞相适配合的缩径,锥形活塞通过活塞套、活塞帽及弹簧帽装在连杆的一端,控制杆一端通过导向杆与连杆铰接,控制杆另一端与阀门执行器相连。The venturi valve includes a valve body, a two-link seat of the device in the valve body, a tapered piston, a connecting rod and a control rod. The valve body cavity is provided with a reduced diameter suitable for the tapered piston, and the tapered piston passes through the piston sleeve. The piston cap and the spring cap are mounted at one end of the connecting rod, and one end of the control rod is hinged to the connecting rod through the guiding rod, and the other end of the control rod is connected with the valve actuator.
上述面风速监测及控制系统的优点包括:1)、阀门采用变风量文丘里阀,能够按照设计要求独立地完成单台通风柜的变风量的控制,有效及时地从污染源排放有毒气体和颗粒,安全可靠地工作;2)、面风速不受管道气压影响,也不受到通风柜内外的干扰;3)、当柜 门上下移动时,能够自动控制变风量的阀门,使面风速稳定在0.5m/s,阀门反应速度应为快反应,平衡时间小于1秒;要求变风量控制阀实测面风速,控制调节方式应为闭环控制,控制面板直接显示面风速。4)、自动调节排风量以满足不同状态下的安全面风速需要,可以通过控制面板设定阀的最小、最大排风量或面风速设定值,并能够维持要求的最小排气量或面风速;5)、当出现面风速过低等不安全情况时应自动发出声光报警,控制器应有紧急情况按钮,当发生火灾及意外紧急情况时,按动此按钮,风阀应按最大风量运行,并发出报警。The advantages of the above surface wind speed monitoring and control system include: 1) The valve adopts a variable air volume venturi valve, which can independently control the variable air volume of a single fume hood according to design requirements, and effectively discharge toxic gases and particles from pollution sources in a timely manner. Work safely and reliably; 2), the surface wind speed is not affected by the pipeline air pressure, and is not interfered by the inside and outside of the fume hood; 3), when the cabinet When the door moves up and down, it can automatically control the variable air volume valve, so that the surface wind speed is stable at 0.5m/s, the valve reaction speed should be fast response, and the balance time is less than 1 second; the variable air volume control valve is required to measure the surface wind speed, and the control adjustment method should be For closed loop control, the control panel directly displays the surface wind speed. 4) Automatically adjust the exhaust air volume to meet the safety surface wind speed requirements under different conditions. The minimum, maximum exhaust air volume or surface wind speed setting value of the valve can be set through the control panel, and the required minimum exhaust volume can be maintained or Face wind speed; 5) When the unfavorable situation such as low surface wind speed is too low, the sound and light alarm should be automatically issued. The controller should have an emergency button. When a fire or unexpected emergency occurs, press this button and the damper should be pressed. The maximum air volume is running and an alarm is issued.
通过对上述专利文献进行分析可知,该实验室变风量通风柜控制系统是利用面风速传感器实时测量面风速,并将其转化成电压信号传给变风量控制器,变风量控制器根据面风速实际值与设定值进行比较,即对面风速值进行检测和对比,从而根据对比结果调节文丘里阀的活塞,改变通风截面积,最终达到调节通风量的效果。这种控制方式需要使用面风速传感器直接检测通风柜的面风速并将面风速实际值与设定值相比较,适用的阀门种类有限,且容易受到通风管道气压、室内空气流动及人为外在因素的干扰,测量精度不高。Through the analysis of the above patent documents, the laboratory variable air volume fume control system uses the surface wind speed sensor to measure the surface wind speed in real time, and converts it into a voltage signal and transmits it to the variable air volume controller. The variable air volume controller is actually based on the surface wind speed. The value is compared with the set value, that is, the opposite wind speed value is detected and compared, thereby adjusting the piston of the venturi valve according to the comparison result, changing the sectional area of the ventilation, and finally achieving the effect of adjusting the ventilation amount. This type of control requires the use of a surface wind speed sensor to directly detect the surface wind speed of the fume hood and compare the actual surface wind speed with the set value. The applicable valve types are limited and are susceptible to ventilation pipe air pressure, indoor air flow and human external factors. The interference is not high.
在专利号为CN201610236923.6的中国专利文件中还公开了一种智能控制型通风柜,属于实验设备领域,包括风速感应器、排风装置、补风装置、控制中心、温度传感器和压力传感器,排风装置和补风装置均为变频驱动且均与控制中心连接,通风柜内设置风速感应器、温度感应器和压力传感器,可随时监测通风柜内的气流、气压的参数,并及时反馈到控制中心,进而控制补风和排风的风量。本发明可实现闭环式自动调控,安全系数高,而且节能、环保。In the Chinese patent document with the patent number CN201610236923.6, an intelligent control type fume hood is also disclosed, which belongs to the field of experimental equipment, including a wind speed sensor, an air exhaust device, a supplement air device, a control center, a temperature sensor and a pressure sensor. Both the exhaust device and the air supply device are driven by frequency conversion and are connected to the control center. The air speed sensor, temperature sensor and pressure sensor are arranged in the fume hood, and the airflow and air pressure parameters in the fume hood can be monitored at any time, and feedback is timely The control center, which in turn controls the air volume of the wind and the exhaust. The invention can realize closed-loop automatic regulation, high safety factor, energy saving and environmental protection.
该发明在实际的使用过程中,根据不同的实验释放气体量的不同,通过电子触控屏进行温度、压力和风速等参数的设定,然后风速感应器反馈排风装置处的风速到控制中心,控制中心通过编制好的程序自动调整补风装置的补风量,温度传感器和压力传感器同时反馈相应的参数到控制中心,实时检测试验状态是否正常,而且可通过控制操作门电机实现操作门开口的大小,调节补风量的大小。然而,该发明并未具体说明控制中心如何自动调整补风装置的补风量,需要进一步进行技术上的完善。In the actual use process, according to different experimental release gas quantities, the temperature, pressure and wind speed parameters are set through the electronic touch screen, and then the wind speed sensor feeds back the wind speed at the air exhaust device to the control center. The control center automatically adjusts the air supply volume of the air supply device through the programmed program. The temperature sensor and the pressure sensor simultaneously feed back the corresponding parameters to the control center to detect whether the test state is normal in real time, and can realize the operation of the door opening by controlling the operation door motor. Size, adjust the amount of air. However, the invention does not specifically describe how the control center automatically adjusts the amount of replenishment of the air supplement device, and further technical improvement is required.
综上,如何实时精准地调节通风柜的通风量,实现更为安全、高效、节能、智能的变风量控制系统成为本领域亟待解决的问题之一。In summary, how to accurately adjust the ventilation volume of the fume hood in real time to achieve a safer, more efficient, energy-saving and intelligent variable air volume control system has become one of the urgent problems to be solved in the field.
发明内容Summary of the invention
为了解决上述问题,本发明的目的在于提供一种风阀控制方法,风阀设置于通风柜上, 通风柜设有移门,包括以下步骤:实时风量检测,当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;标准风量计算,检测通风柜的移门的开启面积,根据开启面积和预设的安全面风速,计算保证安全面风速时风阀需要的标准风量;风量差值判断,判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,以使得实时风量最终处于允许误差值范围内。In order to solve the above problems, an object of the present invention is to provide a damper control method, in which a damper is disposed on a fume hood. The fume hood is equipped with a sliding door, including the following steps: real-time air volume detection, when the damper maintains a certain opening angle, the real-time air volume of the damper is detected at a set frequency; the standard air volume is calculated, and the opening area of the sliding door of the fume hood is detected, according to The opening area and the preset safety surface wind speed, calculate the standard air volume required for the damper to ensure the safety surface wind speed; determine the air volume difference, determine whether the real-time air volume value is within the allowable error value of the standard air volume, and if so, maintain the damper The current opening angle; if not, adjust the opening angle of the damper such that the real-time air volume is ultimately within the allowable error value range.
该风阀控制方法根据移门开启面积和安全面风速计算标准风量,将风阀的实时风量与标准风量进行对比,根据对比结果调整风阀的开启角度,可适用于各种风阀,并且排除了管道气压、室内空气流动及人为外在因素的干扰,能够实现更为安全、高效、节能、智能的通风量调节。The damper control method calculates the standard air volume according to the sliding door opening area and the safety surface wind speed, compares the real-time air volume of the damper with the standard air volume, and adjusts the opening angle of the damper according to the comparison result, which can be applied to various dampers and is excluded. The interference of pipeline air pressure, indoor air flow and human external factors can achieve safer, more efficient, energy-saving and intelligent ventilation adjustment.
优选地,当风阀为排风阀时,排风阀的标准风量计算是根据以下公式进行的:Q=V·S;其中,Q为排风阀的标准风量,V为预设的安全面风速,S为移门的开启面积。Preferably, when the damper is an exhaust valve, the standard air volume calculation of the exhaust valve is performed according to the following formula: Q=V·S; wherein Q is the standard air volume of the exhaust valve, and V is the preset safety surface. Wind speed, S is the opening area of the sliding door.
更进一步地,当风阀还包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7]。Further, when the damper further includes a supplemental damper, the standard air volume of the supplemental damper is Q 2 =n Q 1 , where Q 2 is the standard air volume of the supplemental damper, and the value range of n is [0.65, 0.7 ].
进一步地,本风阀控制方法还包括:开启高度检测,在标准风量计算之前,检测移门的开启高度;开启面积计算,将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。Further, the damper control method further comprises: opening the height detection, detecting the opening height of the sliding door before the standard air volume calculation; opening the area calculation, further combining the opening height with the total height of the sliding door and the width of the sliding door, Calculate the opening area of the sliding door according to the following formula: S=(Hh)·L; where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is The width of the sliding door.
在标准风量计算之前,首先检测移门的开启高度,根据移门的开启高度来计算得到移门的开启面积,实际应用中只需要采用简单的位置传感装置即可实现,使得移门开启面积的检测更为方便快捷。Before the standard air volume calculation, the opening height of the sliding door is first detected, and the opening area of the sliding door is calculated according to the opening height of the sliding door. In practical applications, only a simple position sensing device can be realized, so that the sliding door opening area is realized. The detection is more convenient and faster.
优选地,设定频率为大于或等于40ms/次。该频率为保证风阀能够较佳地调节通风量,实时精准控制面风速,且避免了频繁调节所造成的能量损耗。Preferably, the set frequency is greater than or equal to 40 ms/time. This frequency ensures that the damper can better adjust the ventilation volume, accurately control the surface wind speed in real time, and avoid the energy loss caused by frequent adjustment.
进一步地,在风量差值判断步骤中,当实时风量不在标准风量的允许误差值范围内时,如果实时风量大于标准风量的允许误差值范围的最高值,则减小风阀的开启角度;如果实时风量小于标准风量的允许误差值范围的最低值,则增大风阀的开启角度。Further, in the air volume difference determining step, when the real-time air volume is not within the allowable error value range of the standard air volume, if the real-time air volume is greater than the highest value of the allowable error value range of the standard air volume, the opening angle of the damper is decreased; If the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the opening angle of the damper is increased.
优选地,标准风量的允许误差值为0。即使得实时风量值等于标准风量值,从而维持最佳的通风量,取得最好的调节效果。Preferably, the allowable error value of the standard air volume is zero. That is, the real-time air volume value is equal to the standard air volume value, so as to maintain the optimal ventilation and achieve the best adjustment effect.
本发明还公开了一种风阀控制装置,风阀设置于通风柜上,通风柜设有移门,包括:实时风量检测部,实时风量检测部与风阀相连接,从风阀处获取实时风量信号,实时风量为当风阀维持一定开启角度时,实时风量检测部以设定频率检测到的风阀的通风量;开启 面积检测部,开启面积检测部与移门相连接,从移门处获取移门的开启面积信号;标准风量计算部,接收开启面积信号,并且根据开启面积信号和预设的通风柜的安全面风速来输出标准风量信号,标准风量为保证安全面风速时风阀需要的通风量;风量差值判断部,接收实时风量信号和标准风量信号,输出风阀控制信号,其中,风阀控制信号所实施的控制动作包括:The invention also discloses a damper control device, the damper is arranged on the fume hood, the fume hood is provided with a sliding door, comprising: a real-time air volume detecting unit, the real-time air volume detecting unit is connected with the damper, and the real-time air volume is obtained from the damper The signal, the real-time air volume is the ventilation amount of the damper detected by the real-time air volume detecting unit at the set frequency when the damper maintains a certain opening angle; The area detecting unit, the opening area detecting unit is connected with the sliding door, and the opening area signal of the sliding door is obtained from the sliding door; the standard air volume calculating unit receives the opening area signal, and according to the opening area signal and the safety surface of the preset fume hood The wind speed is used to output the standard air volume signal. The standard air volume is the ventilation required for the wind valve when the safety surface wind speed is ensured; the air volume difference judgment unit receives the real-time air volume signal and the standard air volume signal, and outputs the damper control signal, wherein the damper control signal is The control actions implemented include:
当实时风量在标准风量的允许误差值范围内时,维持风阀当前的开启角度;Maintaining the current opening angle of the damper when the real-time air volume is within the allowable error value of the standard air volume;
当实时风量不在标准风量的允许误差值范围内时,调整风阀当前的开启角度,以使得实时风量最终处于允许误差值范围内。When the real-time air volume is not within the allowable error value range of the standard air volume, adjust the current opening angle of the damper so that the real-time air volume is finally within the allowable error value range.
进一步地,当风阀为排风阀时,排风阀的标准风量计算是根据以下公式进行的:Q1=V·S;其中,Q1为排风阀的标准风量,V为预设的安全面风速,S为移门的开启面积。Further, when the damper is an exhaust valve, the standard air volume calculation of the exhaust valve is performed according to the following formula: Q 1 = V·S; wherein Q 1 is the standard air volume of the exhaust valve, and V is a preset The safety surface wind speed, S is the opening area of the sliding door.
优选地,当风阀还包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7]。Preferably, when the damper further comprises a supplemental damper, the standard air volume of the supplemental damper is Q 2 =n Q 1 , wherein Q 2 is the standard air volume of the supplemental damper, and the value of n ranges from [0.65, 0.7] .
进一步地,开启面积检测部包括:开启高度检测部,与移门相连接来检测移门的开启高度;开启面积计算部,接收开启高度信号,并且进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为移门的开启面积,H为移门总高,h为移门的开启高度,L为移门的宽度。Further, the opening area detecting portion includes: an opening height detecting portion connected to the sliding door to detect the opening height of the sliding door; the opening area calculating portion receiving the opening height signal, and further combining the sliding door total height and the sliding door The width of the sliding door is calculated according to the following formula: S = (Hh) · L; where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the displacement The width of the door.
优选地,设定频率为大于或等于40ms/次。Preferably, the set frequency is greater than or equal to 40 ms/time.
进一步地,在风量差值判断部中,当判断实时风量不在标准风量的允许误差值范围时,风阀控制信号所实施的控制动作具体包括:如果实时风量大于标准风量的允许误差值范围的最高值,则减小风阀的开启角度;如果实时风量小于标准风量的允许误差值范围的最低值,则增大风阀的开启角度。Further, in the air volume difference determining unit, when it is determined that the real-time air volume is not within the allowable error value range of the standard air volume, the control action performed by the damper control signal specifically includes: if the real-time air volume is greater than the standard air volume, the maximum allowable error value range The value reduces the opening angle of the damper; if the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the opening angle of the damper is increased.
优选地,标准风量的允许误差值为0。Preferably, the allowable error value of the standard air volume is zero.
本发明还提供一种风阀控制装置,风阀设置于通风柜上,通风柜设有移门,包括以下模块:实时风量检测模块,用于当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;开启面积检测模块,用于检测通风柜的移门的开启面积;标准风量计算模块,用于根据开启面积和预设的安全面风速,计算保证安全面风速时风阀需要的标准风量;风量差值判断模块,用于判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀当前的开启角度,以使得实时风量最终处于允许误差值范围内。The invention also provides a damper control device, the damper is arranged on the fume hood, the fume hood is provided with a sliding door, and comprises the following module: a real-time air volume detecting module, configured to detect the set frequency when the damper maintains a certain opening angle The real-time air volume of the damper; the open area detection module is used to detect the opening area of the sliding door of the fume hood; the standard air volume calculation module is used to calculate the damper required to ensure the safety surface wind speed according to the opening area and the preset safety surface wind speed The standard air volume; the air volume difference judgment module is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the current opening angle of the damper So that the real-time air volume is finally within the allowable error value range.
优选地,当风阀为排风阀时,排风阀的标准风量计算是根据以下公式进行的:Q=V·S; 其中,Q为排风阀的标准风量,V为预设的安全面风速,S为移门的开启面积。Preferably, when the damper is an exhaust damper, the standard air volume calculation of the venting valve is performed according to the following formula: Q=V·S; Where Q is the standard air volume of the exhaust valve, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,当风阀还包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7]。Further, when the damper further includes a supplemental damper, the standard air volume of the supplemental damper is Q 2 =n Q 1 , where Q 2 is the standard air volume of the supplemental damper, and the value range of n is [0.65, 0.7 ].
进一步地,本风阀控制装置还包括:开启高度检测模块,用于在标准风量计算之前,检测移门的开启高度;开启面积计算模块,用于将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到所述移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。Further, the damper control device further includes: an opening height detecting module for detecting the opening height of the sliding door before the standard air volume calculation; and an opening area calculation module for further combining the opening height with the total sliding door height of the sliding door And the width of the sliding door, the opening area of the sliding door is calculated according to the following formula: S=(Hh)·L; wherein S is the opening area of the sliding door, H is the total height of the sliding door, h is the The opening height of the sliding door, L is the width of the sliding door.
优选地,设定频率为大于或等于40ms/次。Preferably, the set frequency is greater than or equal to 40 ms/time.
进一步地,在风量差值判断模块中,当实时风量不在标准风量的允许误差值范围时,如果实时风量大于标准风量的允许误差值范围的最高值,则减小风阀当前的开启角度;如果实时风量小于标准风量的允许误差值范围的最低值,则增大风阀当前的开启角度。Further, in the air volume difference judgment module, when the real-time air volume is not within the allowable error value range of the standard air volume, if the real-time air volume is greater than the highest value of the allowable error value range of the standard air volume, the current opening angle of the damper is decreased; If the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the current opening angle of the damper is increased.
优选地,标准风量的允许误差值为0。Preferably, the allowable error value of the standard air volume is zero.
本发明还公开一种风阀控制系统,风阀设置于通风柜上,通风柜设有移门,包括如上所述的风阀控制装置,风阀控制装置分别与风阀和移门相连接。The invention also discloses a damper control system, the damper is arranged on the fume hood, the fume hood is provided with a sliding door, comprising the damper control device as described above, and the damper control device is respectively connected with the damper and the sliding door.
本发明还提供一种通风柜,包括如上所述的风阀控制系统。The present invention also provides a fume hood comprising the damper control system as described above.
进一步地,通风柜还设有人机界面,用于输入控制信息和显示通风柜的状态信息。Further, the fume hood is further provided with a human-machine interface for inputting control information and displaying status information of the fume hood.
如上,本发明所提供的风阀控制方法、风阀控制装置、风阀控制系统和通风柜,可适用于各种风阀,并且排除了管道气压,室内空气流动及人为外在因素的干扰,能够实现更为安全、高效、节能、智能的通风量调节。为让本发明的上述内容能更明显易懂,下文特举优选实施例,并结合附图,作详细说明如下。As described above, the damper control method, the damper control device, the damper control system, and the fume hood provided by the present invention can be applied to various dampers, and the interference of the pipeline air pressure, the indoor air flow, and human external factors is eliminated. It can achieve safer, more efficient, energy-saving and intelligent ventilation adjustment. In order to make the above description of the present invention more comprehensible, the preferred embodiments will be described below in detail with reference to the accompanying drawings.
附图说明DRAWINGS
下面将结合附图对本发明的具体实施方式作进一步详细说明。Specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
图1为本发明第一实施例的风阀控制方法的流程图;1 is a flow chart showing a method of controlling a damper according to a first embodiment of the present invention;
图2为本发明第一实施例的风阀控制方法的另一流程图;2 is another flow chart of a method of controlling a damper according to a first embodiment of the present invention;
图3a为本发明第二实施例的一种风阀控制装置的模块连接示意图;3a is a schematic diagram showing the module connection of a damper control device according to a second embodiment of the present invention;
图3b为本发明第二实施例的另一种风阀控制装置的模块连接示意图;3b is a schematic diagram showing the module connection of another damper control device according to a second embodiment of the present invention;
图4a为本发明第三实施例的一种风阀控制装置的模块连接示意图;4a is a schematic diagram showing the module connection of a damper control device according to a third embodiment of the present invention;
图4b为本发明第三实施例的另一种风阀控制装置的模块连接示意图;4b is a schematic diagram showing the module connection of another damper control device according to a third embodiment of the present invention;
图5为本发明第七实施例的通风柜的各部分结构连接示意图。 Fig. 5 is a schematic view showing the structural connection of various parts of a fume hood according to a seventh embodiment of the present invention.
具体实施方式detailed description
以下由特定的具体实施例说明本发明的实施方式,本领域技术人员可由本说明书所揭示的内容轻易地了解本发明的其他优点及功效。虽然本发明的描述将结合优选实施例一起介绍,但这并不代表此发明的特征仅限于该实施方式。恰恰相反,结合实施方式作发明介绍的目的是为了覆盖基于本发明的权利要求而有可能延伸出的其它选择或改造。为了提供对本发明的深度了解,以下描述中将包含许多具体的细节。本发明也可以不使用这些细节实施。此外,为了避免混乱或模糊本发明的重点,有些具体细节将在描述中被省略。The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily understand other advantages and functions of the present invention from the disclosure of the present disclosure. Although the description of the present invention will be described in conjunction with the preferred embodiments, this is not a limitation of the invention. Rather, the invention is described in connection with the embodiments so as to cover other alternatives or modifications that are possible in the embodiments of the invention. In order to provide a thorough understanding of the present invention, many specific details are included in the following description. The invention may also be practiced without these details. In addition, some specific details are omitted in the description in order to avoid obscuring or obscuring the present invention.
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,“连接”可以是有线连接,也可以是无线连接,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" should be understood broadly, unless otherwise explicitly defined and limited. For example, "connecting" may be a wired connection, or It is a wireless connection, which may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be two components. Internal connectivity. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
另外,在以下的说明中所使用的“上”、“下”、“左”、“右”、“顶”、“底”,不应理解为对本发明的限制。In addition, the terms "upper", "lower", "left", "right", "top", and "bottom" used in the following description are not to be construed as limiting the invention.
【第一实施例】[First Embodiment]
如图1所示,本发明公开一种风阀控制方法,风阀设置于通风柜上,通风柜设有移门,包括以下步骤:As shown in FIG. 1 , the present invention discloses a damper control method. The damper is disposed on a fume hood, and the fume hood is provided with a sliding door, including the following steps:
步骤S10:实时风量检测,当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;Step S10: real-time air volume detection, when the damper maintains a certain opening angle, detecting the real-time air volume of the damper at a set frequency;
步骤S20:开启面积检测,检测通风柜的移门的开启面积;Step S20: Turn on the area detection to detect the opening area of the sliding door of the fume hood;
步骤S30:标准风量计算,根据开启面积和预设的安全面风速,计算保证安全面风速时风阀需要的标准风量;Step S30: calculating the standard air volume, and calculating a standard air volume required for the wind valve when ensuring the wind speed of the safety surface according to the opening area and the preset safety surface wind speed;
步骤S40:风量差值判断,判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,以使得实时风量处于允许误差值范围内。Step S40: determining the air volume difference value, determining whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintaining the current opening angle of the damper; if not, adjusting the opening angle of the damper to make the real-time air volume Within the allowable error value range.
其中,步骤S10的实时风量检测中,可在风阀中设置用于检测通风量的风量检测装置,该风量检测装置与风阀相连接,从风阀处获取风阀的实时风量,风量检测装置通常可采用风量仪或风速仪。 In the real-time air volume detection of step S10, an air volume detecting device for detecting the ventilation amount may be disposed in the damper, and the air volume detecting device is connected with the damper, and the real-time air volume of the damper is obtained from the damper, and the air volume detecting device is A wind gauge or an anemometer can usually be used.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula:
Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Q=V·S; where Q is the standard air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳,即当补风阀的标准风量达到排风阀标准风量的70%时,整个通风柜处于最佳的通风状态。Still further, inner wind up type hood, when both the exhaust valve and damper comprises a damper up, up to the standard air volume damper Q 2 = n Q 1, wherein, Q 2 is the complement damper The standard air volume, n has a value range of [0.65, 0.7]. Preferably, the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
进一步地,如图2中所示,本实施例的风阀控制方法还包括:Further, as shown in FIG. 2, the damper control method of this embodiment further includes:
步骤S21:开启高度检测,检测移门的开启高度;Step S21: Turn on the height detection to detect the opening height of the sliding door;
步骤S22:开启面积计算,将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启面积。Step S22: Open the area calculation, further combine the opening height with the total height of the sliding door and the width of the sliding door, and calculate the opening area of the sliding door according to the following formula: S=(Hh)·L; wherein S is the The opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the width of the sliding door. Specifically, a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening area of the door.
更为具体地,在本实施例的标准风量计算步骤S30中,首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开启面积,其次根据移门的开启面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, in the standard air volume calculation step S30 of the embodiment, the opening area of the sliding door is first calculated according to the total height of the sliding door, the sliding door width and the real-time height of the sliding door, and secondly, according to the opening area of the sliding door and the pre-planning The set wind speed is calculated from the safety surface. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在步骤S10的实时风量检测中,需要以预先设定的频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测时较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。Preferably, in the real-time air volume detection in step S10, the real-time air volume of the damper needs to be detected at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be 40 ms/time or more, the frequency. For the detection frequency which is more suitable for the actual measurement, it can meet the requirements of both data acquisition and energy conservation. Similarly, it can be set according to the actual needs of the user.
更进一步地,在步骤S40的风量差值判断中,需要判断实时风量值是否处于标准风量值的允许误差值范围内,该误差范围可由用户进行设定,较佳地,该允许误差值可以为0,此时当实时风量值高于标准风量值时,则减小风阀的开启角度;当实时风量值低于标准风量值时,则增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值设为0时,调控的效果最佳。Further, in the determination of the air volume difference in step S40, it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the error range can be set by the user. Preferably, the allowable error value can be 0. At this time, when the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume When the value is maintained, the current opening angle of the damper is maintained. Those skilled in the art will appreciate that when the allowable error value is set to zero, the effect of the regulation is optimal.
本实施例中的风阀控制方法,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,能够适用于伯努利变风量调节阀、文丘里阀、蝶阀等多种风阀,排 除了管道气压,室内空气流动及人为外在因素的干扰,能够实现更为精准的控制,具有很高的实用价值。The damper control method in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper, it can be applied to a variety of dampers such as Bernoulli variable air volume control valve, venturi valve, butterfly valve, etc. In addition to pipeline air pressure, indoor air flow and human external factors, it can achieve more precise control and has high practical value.
【第二实施例】[Second embodiment]
如图3a所示,本实施例公开了一种风阀控制装置100,风阀设置于通风柜上,通风柜设有移门,包括:As shown in FIG. 3a, the embodiment discloses a damper control device 100. The damper is disposed on a fume hood, and the fume hood is provided with a sliding door, including:
实时风量检测部101,实时风量检测部101与风阀相连接,从风阀处获取实时风量信号,实时风量为当风阀维持一定开启角度时,实时风量检测部以设定频率检测到的风阀的通风量;The real-time air volume detecting unit 101 connects the damper to the damper, and acquires a real-time air volume signal from the damper. The real-time air volume is the wind detected by the real-time air volume detecting unit at the set frequency when the damper maintains a certain opening angle. The amount of ventilation of the valve;
开启面积检测部102,开启面积检测部102与移门相连接,从移门处获取移门的开启面积信号;Opening the area detecting unit 102, the opening area detecting unit 102 is connected to the sliding door, and acquiring an opening area signal of the sliding door from the sliding door;
标准风量计算部103,接收开启面积信号,并且根据开启面积信号和预设的通风柜的安全面风速来输出标准风量信号,标准风量为保证安全面风速时风阀需要的通风量;The standard air volume calculation unit 103 receives the open area signal, and outputs a standard air volume signal according to the open area signal and the preset safety surface wind speed of the fume hood, and the standard air volume is the required ventilation amount of the air valve when the safety surface wind speed is ensured;
风量差值判断部104,接收实时风量信号和标准风量信号,输出风阀控制信号,其中,风阀控制信号所实施的控制动作包括:The air volume difference determining unit 104 receives the real-time air volume signal and the standard air volume signal, and outputs a damper control signal, wherein the control actions performed by the damper control signal include:
当实时风量在标准风量的允许误差值范围内时,维持风阀当前的开启角度;Maintaining the current opening angle of the damper when the real-time air volume is within the allowable error value of the standard air volume;
当实时风量不在标准风量的允许误差值范围内时,调整风阀当前的开启角度,以使得实时风量最终处于允许误差值范围内。When the real-time air volume is not within the allowable error value range of the standard air volume, adjust the current opening angle of the damper so that the real-time air volume is finally within the allowable error value range.
其中,上述的实时风量检测部101、开启面积检测部102、标准风量计算部103和风量差值判断部104均为广义的概念,可以为硬件,例如传感器、检测仪等,也可以为软件。The real-time air volume detecting unit 101, the opening area detecting unit 102, the standard air volume calculating unit 103, and the air volume difference determining unit 104 are all broad concepts, and may be hardware, such as a sensor, a detector, or the like, or may be software.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula: Q=V·S; wherein Q is a standard The air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳,即当补风阀的标准风量达到排风阀标准风量的70%时,整个通风柜处于最佳的通风状态。Furthermore, in the internal air supply type fume hood, when the damper includes both the exhaust valve and the supplemental damper, the standard air volume of the plenum valve is Q 2 =n Q 1 , wherein Q 2 is a supplemental damper The standard air volume, n has a value range of [0.65, 0.7]. Preferably, the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
进一步地,如图3b所示,本实施例的风阀控制装置还包括:Further, as shown in FIG. 3b, the damper control device of this embodiment further includes:
开启高度检测部112,与移门相连接来检测移门的开启高度;Opening the height detecting portion 112, and connecting with the sliding door to detect the opening height of the sliding door;
开启面积计算部122,接收开启高度信号,并且进一步结合移门的移门总高以及移门 的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为移门的开启面积,H为移门总高,h为移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启面积。The opening area calculating unit 122 receives the opening height signal, and further combines the sliding door total height and the sliding door The width of the sliding door is calculated according to the following formula: S = (Hh) · L; where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the displacement The width of the door. Specifically, a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening area of the door.
更为具体地,在本实施例的标准风量计算部103中,首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开启面积,其次根据移门的开启面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, in the standard air volume calculation unit 103 of the present embodiment, the opening area of the sliding door is first calculated according to the total height of the sliding door, the sliding door width, and the real-time height of the sliding door, and secondly, according to the opening area of the sliding door and the pre-planning The set wind speed is calculated from the safety surface. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在实时风量检测部101中,需要以预先设定的频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测时较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。Preferably, in the real-time air volume detecting unit 101, it is necessary to detect the real-time air volume of the damper at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be 40 ms/time or more, and the frequency is The more suitable detection frequency in the actual measurement can meet the requirements of both data acquisition and energy saving. Similarly, it can be set according to the actual needs of the user.
更进一步地,在风量差值判断部104中,需要判断实时风量值是否处于标准风量值的允许误差值范围内,该允许误差范围可由用户进行设定,较佳地,该允许误差值范围可以为0,此时当实时风量值高于标准风量值时,减小风阀的开启角度;当实时风量值低于标准风量值时,增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值范围设为0时,调控的效果最佳。Further, in the air volume difference determining unit 104, it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the allowable error range can be set by the user. Preferably, the allowable error value range can be 0, when the real-time air volume value is higher than the standard air volume value, reduce the opening angle of the damper; when the real-time air volume value is lower than the standard air volume value, increase the opening angle of the damper; when the real-time air volume value is equal to the standard air volume value At the same time, the current opening angle of the damper is maintained. Those skilled in the art will appreciate that the regulation effect is optimal when the allowable error value range is set to zero.
本实施例中的风阀控制装置,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,能够适用于伯努利变风量调节阀、文丘里阀、蝶阀等多种风阀,排除了管道气压,室内空气流动及人为外在因素的干扰,能够实现更为精准的控制,具有很高的实用价值。The damper control device in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper can be applied to Bernoulli variable air volume control valve, venturi valve, butterfly valve and other dampers, eliminating the interference of pipeline air pressure, indoor air flow and human external factors, which can achieve more precise The control has high practical value.
【第三实施例】[Third embodiment]
如图4a所示,本发明第三实施例提供一种风阀控制装置200,风阀设置于通风柜上,通风柜设有移门,风阀控制装置200包括以下模块:As shown in FIG. 4a, a third embodiment of the present invention provides a damper control device 200. The damper is disposed on a fume hood, and the fume hood is provided with a sliding door. The damper control device 200 includes the following modules:
实时风量检测模块201,用于当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;The real-time air volume detecting module 201 is configured to detect the real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
开启面积检测模块202,用于检测通风柜的移门的开启面积;The opening area detecting module 202 is configured to detect an opening area of the sliding door of the fume hood;
标准风量计算模块203,用于根据开启面积和预设的安全面风速,计算保证安全面风 速时风阀需要的标准风量;The standard air volume calculation module 203 is configured to calculate a safety surface wind according to the opening area and the preset safety surface wind speed. The standard air volume required for the speed damper;
风量差值判断模块204,用于判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,以使得实时风量最终处于允许误差值范围内。The air volume difference determining module 204 is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if yes, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper to enable real-time The air volume is ultimately within the allowable error range.
其中,在实时风量检测模块201中,可在风阀中设置用于检测通风量的风量检测装置来检测风阀的实时风量,该风量检测装置与本实施例的风阀控制装置200中的实时风量检测模块201相连接,并将检测到的通风量的数值信号实时传输给实时风量检测模块201,通常可采用风量仪或风速仪来进行风量检测。In the real-time air volume detecting module 201, an air volume detecting device for detecting a ventilation amount may be provided in the damper to detect a real-time air volume of the damper, and the air volume detecting device and the damper control device 200 of the present embodiment are real-time. The air volume detecting module 201 is connected, and the numerical signal of the detected ventilation amount is transmitted to the real-time air volume detecting module 201 in real time, and the air volume detecting is usually performed by using a wind gauge or an anemometer.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula:
Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Q=V·S; where Q is the standard air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳,即当补风阀的标准风量达到排风阀标准风量的70%时,整个通风柜处于最佳的通风状态。Furthermore, in the internal air supply type fume hood, when the damper includes both the exhaust valve and the supplemental damper, the standard air volume of the plenum valve is Q 2 =n Q 1 , wherein Q 2 is a supplemental damper The standard air volume, n has a value range of [0.65, 0.7]. Preferably, the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
进一步地,如图4b所示,本实施例的风阀控制装置具体可包括:开启高度检测模块212,检测移门的开启高度;移门面积计算模块222,将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启高度,从而计算出移门的开启面积。Further, as shown in FIG. 4b, the damper control device of the embodiment may specifically include: an opening height detecting module 212 for detecting an opening height of the sliding door; and a sliding door area calculating module 222 for further combining the opening height with the sliding door shifting The total height of the door and the width of the sliding door are calculated according to the following formula: S=(Hh)·L; where S is the opening area of the sliding door, H is the total height of the sliding door, and h is the The opening height of the sliding door, L is the width of the sliding door. Specifically, a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening height of the door, thereby calculating the opening area of the sliding door.
更为具体地,标准风量计算模块202首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开启面积,其次根据移门的开启面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, the standard air volume calculation module 202 first calculates the opening area of the sliding door according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly, according to the opening area of the sliding door and the preset safety surface wind speed. Standard air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在实时风量检测模块201中,需要以预先设定频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。 Preferably, in the real-time air volume detecting module 201, the real-time air volume of the damper needs to be detected at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be greater than or equal to 40 ms/time, and the frequency is measured. A more suitable detection frequency can meet both the data acquisition and energy saving requirements. Similarly, it can be set according to the actual needs of the user.
更进一步地,在风量差值判断模块204中,需要判断实时风量值是否处于标准风量值的允许误差值范围内,该允许误差值范围可由用户进行设定,较佳地,允许误差值可以为0,此时当实时风量值高于标准风量值时,则减小风阀的开启角度;当实时风量值低于标准风量值时,则增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值设为0时,调控的效果最佳。Further, in the air volume difference determining module 204, it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the allowable error value range can be set by the user. Preferably, the allowable error value can be 0. At this time, when the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume When the value is maintained, the current opening angle of the damper is maintained. Those skilled in the art will appreciate that when the allowable error value is set to zero, the effect of the regulation is optimal.
本实施例中的风阀控制装置,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,从而能够实现更为精准的控制,具有很高的实用价值。The damper control device in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper enables more precise control and has high practical value.
【第四实施例】Fourth Embodiment
本实施例公开了另一种风阀控制装置,风阀设置于通风柜上,通风柜设有移门,包括存储器和处理器,存储器存储有计算机可以执行的风阀控制程序,处理器连接至存储器,并且配置为执行风阀控制程序:This embodiment discloses another damper control device. The damper is disposed on a fume hood. The fume hood is provided with a sliding door, and includes a memory and a processor. The memory stores a damper control program executable by a computer, and the processor is connected to the memory. And configured to execute the damper control program:
实时风量检测,当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;Real-time air volume detection, when the damper maintains a certain opening angle, the real-time air volume of the damper is detected at a set frequency;
开启面积检测,检测通风柜的移门的开启面积;Open area detection to detect the opening area of the sliding door of the fume hood;
标准风量计算,根据开启面积和预设的安全面风速,计算保证安全面风速时风阀需要的标准风量;The standard air volume calculation calculates the standard air volume required by the damper to ensure the safety surface wind speed according to the opening area and the preset safety surface wind speed;
风量差值判断,判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,并重复进行实时风量检测步骤,直到实时风量处于允许误差值范围内。Judging the air volume difference, determining whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintaining the current opening angle of the damper; if not, adjusting the opening angle of the damper and repeating the real-time air volume detecting step Until the real-time air volume is within the allowable error value range.
其中,在实时风量检测中,可在风阀中设置用于检测通风量的风量检测装置来检测风阀的实时风量,该风量检测装置与本实施例的风阀控制装置相连接,并将检测到的通风量的数值信号实时传输给风阀控制装置,通常可采用风量仪或风速仪来进行风量检测。Wherein, in the real-time air volume detection, an air volume detecting device for detecting the ventilation amount may be provided in the damper to detect the real-time air volume of the damper, and the air volume detecting device is connected to the damper control device of the embodiment, and the detecting The numerical signal of the amount of ventilation to be sent to the damper control device in real time, usually using a wind gauge or an anemometer for air volume detection.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula:
Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Q=V·S; where Q is the standard air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳,即当补风阀的标准风量达到排风阀标准风量的70%时,整个通风柜处于最佳的通风状态。 Still further, inner wind up type hood, when both the exhaust valve and damper comprises a damper up, up to the standard air volume damper Q 2 = n Q 1, wherein, Q 2 is the complement damper The standard air volume, n has a value range of [0.65, 0.7]. Preferably, the value of n is 0.7 when the air volume adjustment effect of the fume hood is optimal, that is, when the standard air volume of the air supply valve reaches the standard air volume of the exhaust valve 70 At the time of %, the entire fume hood is in optimal ventilation.
进一步地,本实施例的风阀控制装置中的处理器配置为执行风阀控制程序,还包括:开启高度检测,检测移门的开启高度;开启面积计算,将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启面积。Further, the processor in the damper control device of the embodiment is configured to execute the damper control program, further comprising: opening the height detection, detecting the opening height of the sliding door; calculating the opening area, further combining the opening height with the shifting of the sliding door The total height of the door and the width of the sliding door are calculated according to the following formula: S=(Hh)·L; where S is the opening area of the sliding door, H is the total height of the sliding door, and h is the The opening height of the sliding door, L is the width of the sliding door. Specifically, a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening area of the door.
更为具体地,本实施例的标准风量计算中,首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开门截面积,其次根据移门的开门截面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, in the standard air volume calculation of the embodiment, the door opening sectional area of the sliding door is first calculated according to the total height of the sliding door, the sliding door width and the real-time height of the sliding door, and secondly, according to the opening sectional area of the sliding door and the preset. The safety surface wind speed is calculated to obtain the standard air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在实时风量检测中,需要以预先设定频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。Preferably, in the real-time air volume detection, the real-time air volume of the damper needs to be detected at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be 40 ms/time or more, and the frequency is suitable for actual measurement. The detection frequency can meet the requirements of both data acquisition and energy saving. Similarly, it can be set according to the actual needs of the user.
更进一步地,在风量差值判断中,需要判断实时风量值是否处于标准风量值的允许误差值范围内,该误差范围可由用户进行设定,较佳地,允许误差值可以为0,即当实时风量值高于标准风量值时,则减小风阀的开启角度;当实时风量值低于标准风量值时,则增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值设为0时,调控的效果最佳。Further, in the determination of the air volume difference, it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the error range can be set by the user. Preferably, the allowable error value can be 0, that is, when When the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, the maintenance is maintained. The current opening angle of the damper is unchanged. Those skilled in the art will appreciate that when the allowable error value is set to zero, the effect of the regulation is optimal.
本实施例中的风阀控制装置,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,从而能够实现更为精准的控制,具有很高的实用价值。The damper control device in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper enables more precise control and has high practical value.
【第五实施例】[Fifth Embodiment]
本发明第五实施例公开了一种非易失性存储介质,在存储介质上存储有风阀控制程序,风阀控制程序被计算机执行以实施风阀控制方法,包括:A fifth embodiment of the present invention discloses a non-volatile storage medium on which a damper control program is stored, and a damper control program is executed by a computer to implement a damper control method, including:
指令1,实时风量检测,当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;Command 1, real-time air volume detection, when the damper maintains a certain opening angle, the real-time air volume of the damper is detected at a set frequency;
指令2,开启面积检测,检测通风柜的移门的开启面积; Command 2, open area detection, and detect the opening area of the sliding door of the fume hood;
指令3,标准风量计算,根据开启面积和预设的安全面风速,计算保证安全面风速时风阀需要的标准风量;Command 3, standard air volume calculation, according to the opening area and the preset safety surface wind speed, calculate the standard air volume required by the damper to ensure the safety surface wind speed;
指令4,风量差值判断,判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,并重复进行实时风量检测步骤,直到实时风量处于允许误差值范围内。Command 4, determine the air volume difference, determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper and repeat the real-time The air volume detection step until the real-time air volume is within the allowable error value range.
其中,在指令1中,可在风阀中设置用于检测通风量的风量检测装置来检测风阀的实时风量,该风量检测装置与本实施例的风阀控制装置相连接,并将检测到的通风量的数值信号实时传输给风阀控制装置,通常可采用风量仪或风速仪来进行风量检测。Wherein, in the command 1, an air volume detecting device for detecting a ventilation amount may be provided in the damper to detect a real-time air volume of the damper, and the air volume detecting device is connected to the damper control device of the embodiment, and will detect The numerical signal of the ventilation quantity is transmitted to the damper control device in real time, and the air volume meter or the anemometer is usually used for the air volume detection.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula:
Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Q=V·S; where Q is the standard air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳。Furthermore, in the internal air supply type fume hood, when the damper includes both the exhaust valve and the supplemental damper, the standard air volume of the plenum valve is Q 2 =n Q 1 , wherein Q 2 is a supplemental damper The standard air volume, n has a value range of [0.65, 0.7], and preferably, the value of n is 0.7, and the air volume adjustment effect of the fume hood is optimal.
进一步地,本实施例的非易失性存储介质中的风阀控制程序被计算机执行以实施风阀控制方法,指令2具体执行包括:指令5,开启高度检测,检测移门的开启高度;指令6,开启面积计算,将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启面积。Further, the damper control program in the non-volatile storage medium of the embodiment is executed by a computer to implement a damper control method, and the specific execution of the instruction 2 includes: an instruction 5, opening height detection, detecting an opening height of the sliding door; 6. Open area calculation, the opening height is further combined with the total height of the sliding door and the width of the sliding door, and the opening area of the sliding door is calculated according to the following formula: S=(Hh)·L; wherein S is the moving The opening area of the door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the width of the sliding door. Specifically, a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening area of the door.
更为具体地,本实施例的指令3中,首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开启面积,其次根据移门的开启面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, in the instruction 3 of the embodiment, the opening area of the sliding door is first calculated according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly according to the opening area of the sliding door and the preset safety surface. The wind speed is calculated to obtain the standard air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在指令1中,需要以预先设定频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。Preferably, in the command 1, the real-time air volume of the damper needs to be detected at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be 40 ms/time or more, and the frequency is suitable for actual measurement. The detection frequency can meet the requirements of both data acquisition and energy saving. Similarly, it can be set according to the actual needs of the user.
更进一步地,在指令4中,需要判断实时风量值是否处于标准风量值的允许误差值范围内,该误差范围可由用户进行设定,较佳地,允许误差值范围可以为0,即当实时风量 值高于标准风量值时,则减小风阀的开启角度;当实时风量值低于标准风量值时,则增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值设为0时,调控的效果最佳。Further, in the instruction 4, it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the error range can be set by the user. Preferably, the allowable error value range can be 0, that is, when real-time Air volume When the value is higher than the standard air volume value, the opening angle of the damper is reduced; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, the damper is maintained. The current opening angle is unchanged. Those skilled in the art will appreciate that when the allowable error value is set to zero, the effect of the regulation is optimal.
本实施例中的非易失性存储介质,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,从而能够实现更为精准的控制,具有很高的实用价值。The non-volatile storage medium in the embodiment compares the real-time air volume value with the standard air volume value by detecting the real-time ventilation amount of the damper and obtaining the standard air volume required by the current fume hood according to the safety surface wind speed, according to the comparison result. Feedback to adjust the opening angle of the damper, which enables more precise control and high practical value.
【第六实施例】[Sixth embodiment]
本发明第六实施例公开了一种风阀控制系统,包括通风柜的风阀和移门,还包括风阀控制装置,风阀控制装置分别与风阀和移门相连接,其中,风阀控制装置包括以下模块:A sixth embodiment of the present invention discloses a damper control system including a damper and a sliding door of a fume hood, and a damper control device, wherein the damper control device is respectively connected with a damper and a sliding door, wherein the damper The control unit includes the following modules:
实时风量检测模块,用于当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;The real-time air volume detecting module is configured to detect the real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
开启面积检测模块,用于检测通风柜的移门的开启面积;Opening an area detecting module for detecting an opening area of the sliding door of the fume hood;
标准风量计算模块,用于根据开启面积和预设的安全面风速,计算保证安全面风速时风阀需要的标准风量;The standard air volume calculation module is configured to calculate a standard air volume required for the wind valve when the safety surface wind speed is ensured according to the opening area and the preset safety surface wind speed;
风量差值判断模块,用于判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,并重复进行实时风量检测步骤,直到实时风量处于允许误差值范围内。The air volume difference determining module is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper and repeat the real-time The air volume detection step until the real-time air volume is within the allowable error value range.
其中,在实时风量检测模块中,可在风阀中设置用于检测通风量的风量检测装置来检测风阀的实时风量,该风量检测装置与本实施例的风阀控制装置中的风量检测模块相连接,并将检测到的通风量的数值信号实时传输给风量检测模块,通常可采用风量仪或风速仪来进行风量检测。Wherein, in the real-time air volume detecting module, an air volume detecting device for detecting a ventilation amount may be provided in the damper to detect a real-time air volume of the damper, and the air volume detecting device and the air volume detecting module in the damper control device of the embodiment Connected and transmitted the detected numerical value of the ventilation quantity to the air volume detection module in real time, usually using a wind gauge or an anemometer for air volume detection.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula:
Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Q=V·S; where Q is the standard air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳。Furthermore, in the internal air supply type fume hood, when the damper includes both the exhaust valve and the supplemental damper, the standard air volume of the plenum valve is Q 2 =n Q 1 , wherein Q 2 is a supplemental damper The standard air volume, n has a value range of [0.65, 0.7], and preferably, the value of n is 0.7, and the air volume adjustment effect of the fume hood is optimal.
进一步地,本实施例的风阀控制系统还包括开启高度检测模块,用于检测移门的开启高度;开启面积计算模块,将开启高度进一步结合移门的移门总高以及移门的宽度,根据 以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启面积。Further, the damper control system of the embodiment further includes an opening height detecting module for detecting the opening height of the sliding door; the opening area calculation module further combining the opening height with the total height of the sliding door and the width of the sliding door, According to The following formula calculates the opening area of the sliding door: S=(Hh)·L; where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the shifting The width of the door. Specifically, a displacement sensor can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting the movement. The opening area of the door.
更为具体地,标准风量计算模块首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开启面积,其次根据移门的开启面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, the standard air volume calculation module first calculates the opening area of the sliding door according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly calculates the standard according to the opening area of the sliding door and the preset safety surface wind speed. Air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在实时风量检测模块中,需要以预先设定频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。Preferably, in the real-time air volume detecting module, the real-time air volume of the damper needs to be detected at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be greater than or equal to 40 ms/time, and the frequency is actually measured. Appropriate detection frequency can meet both data acquisition and energy saving requirements. Similarly, it can be set according to the actual needs of the user.
更进一步地,在风量差值判断模块中,需要判断实时风量值是否处于标准风量值的允许误差值范围内,该误差范围可由用户进行设定,较佳地,允许误差值范围可以为0,即当实时风量值高于标准风量值时,则减小风阀的开启角度;当实时风量值低于标准风量值时,则增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值设为0时,调控的效果最佳。Further, in the air volume difference determining module, it is required to determine whether the real-time air volume value is within the allowable error value range of the standard air volume value, and the error range can be set by the user. Preferably, the allowable error value range can be 0. That is, when the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is decreased; when the real-time air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, Then keep the current opening angle of the damper unchanged. Those skilled in the art will appreciate that when the allowable error value is set to zero, the effect of the regulation is optimal.
本实施例中的风阀控制系统,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,从而能够实现更为精准的控制,具有很高的实用价值。The damper control system in this embodiment compares the real-time ventilation amount of the damper and the standard air volume required by the current fume hood according to the safety surface wind speed, compares the real-time air volume value with the standard air volume value, and feeds back according to the comparison result. Adjusting the opening angle of the damper enables more precise control and has high practical value.
【第七实施例】[Seventh embodiment]
如图5所示,本发明第七实施例公开了一种通风柜300,包括风阀控制系统,该风阀控制系统包括通风柜的风阀301、移门302和风阀控制装置303,风阀301用于调节通风柜300的通风量,风阀控制装置303分别与风阀301和移门302相连接,其中,风阀控制装置303包括以下模块:As shown in FIG. 5, a seventh embodiment of the present invention discloses a fume hood 300 including a damper control system including a damper 301, a sliding door 302 and a damper control device 303, and a damper of the fume hood. 301 is used to adjust the ventilation of the fume hood 300, and the damper control device 303 is connected to the damper 301 and the sliding door 302, respectively, wherein the damper control device 303 comprises the following modules:
实时风量检测模块,用于当风阀维持一定开启角度时,以设定频率检测风阀的实时风量;The real-time air volume detecting module is configured to detect the real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
开启面积检测模块,用于检测通风柜的移门的开启面积;Opening an area detecting module for detecting an opening area of the sliding door of the fume hood;
标准风量计算模块,用于根据开启面积和预设的安全面风速,计算保证安全面风速时 风阀需要的标准风量;Standard air volume calculation module for calculating the wind speed of the safety surface according to the opening area and the preset safety surface wind speed The standard air volume required by the damper;
风量差值判断模块,用于判断实时风量值是否在标准风量的允许误差值范围内,如果是,则维持风阀当前的开启角度;如果不是,则调整风阀的开启角度,并重复进行实时风量检测步骤,直到实时风量处于允许误差值范围内。The air volume difference determining module is configured to determine whether the real-time air volume value is within the allowable error value range of the standard air volume, and if so, maintain the current opening angle of the damper; if not, adjust the opening angle of the damper and repeat the real-time The air volume detection step until the real-time air volume is within the allowable error value range.
其中,在实时风量检测模块中,可在风阀301中设置用于检测通风量的风量检测装置来检测风阀的实时风量,该风量检测装置与本实施例的风阀控制装置303中的实时风量检测模块相连接,并将检测到的通风量的数值信号实时传输给风量检测模块,通常可采用风量仪或风速仪来进行风量检测。In the real-time air volume detecting module, an air volume detecting device for detecting the ventilation amount may be provided in the damper 301 to detect the real-time air volume of the damper, and the real-time air volume of the air volume detecting device and the damper control device 303 of the present embodiment The air volume detecting module is connected, and the numerical signal of the detected ventilation amount is transmitted to the air volume detecting module in real time, and the air volume measuring device or the anemometer is usually used for air volume detecting.
具体地,当风阀为排风阀时,即通风柜为单排风型通风柜时,排风阀的标准风量的计算是根据以下公式得到的:Specifically, when the damper is an exhaust vent valve, that is, when the ventilating cabinet is a single exhaust type ventilating cabinet, the calculation of the standard air volume of the venting valve is obtained according to the following formula:
Q=V·S;其中,Q为标准风量,V为预设的安全面风速,S为移门的开启面积。Q=V·S; where Q is the standard air volume, V is the preset safety surface wind speed, and S is the opening area of the sliding door.
更进一步地,在内补风型通风柜中,当风阀既包括排风阀又包括补风阀时,补风阀的标准风量为Q2=n Q1,其中,Q2为补风阀的标准风量,n的取值范围为[0.65,0.7],优选地,n的值为0.7时通风柜的风量调节效果最佳。Furthermore, in the internal air supply type fume hood, when the damper includes both the exhaust valve and the supplemental damper, the standard air volume of the plenum valve is Q 2 =n Q 1 , wherein Q 2 is a supplemental damper The standard air volume, n has a value range of [0.65, 0.7], and preferably, the value of n is 0.7, and the air volume adjustment effect of the fume hood is optimal.
进一步地,本实施例的通风柜300中风阀控制系统还包括:开启高度检测模块,用于检测移门的开启高度;开启面积计算模块,将开启高度进一步结合移门的移门总高以及移门的宽度,根据以下公式计算得到移门的开启面积:S=(H-h)·L;其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。具体地,可以采用位移传感器304来检测移门的位置信号,将位移传感器与移门连接,从移门处获得其开启高度,从而进一步计算得到移门的开启面积,当然也可以采用其他方法检测移门的开启面积。Further, the damper control system of the fume hood 300 of the embodiment further includes: an opening height detecting module for detecting the opening height of the sliding door; an opening area calculation module, further combining the opening height with the total height and movement of the sliding door The width of the door is calculated according to the following formula: S = (Hh) · L; where S is the opening area of the sliding door, H is the total height of the sliding door, and h is the opening of the sliding door Height, L is the width of the sliding door. Specifically, the displacement sensor 304 can be used to detect the position signal of the sliding door, the displacement sensor is connected with the sliding door, and the opening height is obtained from the sliding door, thereby further calculating the opening area of the sliding door, and of course, other methods can be used for detecting The opening area of the sliding door.
更为具体地,标准风量计算模块首先根据移门总高、移门宽度和移门的实时高度计算得到移门的开启面积,其次根据移门的开启面积和预设的安全面风速计算得到标准风量值。本领域技术人员可以想到,此处移门的标准风量值也可以根据其他与上述方案具有相同原理的方法计算得到。More specifically, the standard air volume calculation module first calculates the opening area of the sliding door according to the total height of the sliding door, the width of the sliding door and the real-time height of the sliding door, and secondly calculates the standard according to the opening area of the sliding door and the preset safety surface wind speed. Air volume value. It will be appreciated by those skilled in the art that the standard air volume value of the sliding door herein can also be calculated according to other methods having the same principle as the above-described scheme.
优选地,在实时风量检测模块中,需要以预先设定频率对风阀的实时风量进行检测,较佳地,该设定频率为固定频率,可以为大于等于40ms/次,该频率为实测较为合适的检测频率,能够同时满足数据获取和节能两方面的需求。同样地,也可以根据用户的实际需求进行设定。Preferably, in the real-time air volume detecting module, the real-time air volume of the damper needs to be detected at a preset frequency. Preferably, the set frequency is a fixed frequency, which may be greater than or equal to 40 ms/time, and the frequency is actually measured. Appropriate detection frequency can meet both data acquisition and energy saving requirements. Similarly, it can be set according to the actual needs of the user.
更进一步地,在风量差值判断模块中,需要判断实时风量值是否处于标准风量值的允 许误差值范围内,该误差范围可由用户进行设定,较佳地,允许误差值范围可以为0,即当实时风量值高于标准风量值时,则减小风阀的开启角度;当实时风量值低于标准风量值时,则增大风阀的开启角度;当实时风量值等于标准风量值时,则维持风阀当前的开启角度不变。本领域技术人员可以想到,当允许误差值设为0时,调控的效果最佳。Further, in the air volume difference judgment module, it is necessary to determine whether the real-time air volume value is in the standard air volume value Within the range of the error value, the error range can be set by the user. Preferably, the allowable error value range can be 0, that is, when the real-time air volume value is higher than the standard air volume value, the opening angle of the damper is reduced; When the air volume value is lower than the standard air volume value, the opening angle of the damper is increased; when the real-time air volume value is equal to the standard air volume value, the current opening angle of the damper is maintained. Those skilled in the art will appreciate that when the allowable error value is set to zero, the effect of the regulation is optimal.
本实施例的通风柜300的通风管道中还可以设置温度传感器、湿度检测模块和声光报警装置,温度传感器和湿度传感器用于以设定频率检测通风柜的温度信息和湿度信息,并将温度信息发送给风阀控制装置303,风阀控制装置303将温度信息和湿度信息分别与预设的温度范围和湿度范围进行比对,当温度信息和湿度信息超过预设的温度范围和湿度范围时,则利用声光报警装置进行声光报警。具体可利用声光报警器来报警,以提醒用户对温度和湿度进行调整以满足预定要求。较佳地,该设定频率同样为固定频率,也可以为大于等于40ms/次。本实施例的通风柜在调节风量的同时对通风管道内的温度和湿度同时进行调控,在达到节能目的的同时满足多功能调控的需求,能够适用于更为广泛的应用场合。The temperature ventilation sensor, the humidity detection module, and the sound and light alarm device may be disposed in the ventilation duct of the fume hood 300 of the embodiment. The temperature sensor and the humidity sensor are used to detect the temperature information and the humidity information of the fume hood at a set frequency, and the temperature is The information is sent to the damper control device 303, and the damper control device 303 compares the temperature information and the humidity information with a preset temperature range and a humidity range, respectively, when the temperature information and the humidity information exceed a preset temperature range and a humidity range. , the sound and light alarm device is used for sound and light alarm. Specifically, an audible and visual alarm can be used to alert the user to adjust the temperature and humidity to meet predetermined requirements. Preferably, the set frequency is also a fixed frequency, and may be 40 ms/time or more. The fume hood of the present embodiment simultaneously regulates the temperature and humidity in the ventilation duct while adjusting the air volume, and meets the requirements of multi-functional regulation while achieving the purpose of energy saving, and can be applied to a wider range of applications.
较佳地,通风柜300还设有人机界面305,用于输入预设频率、预设的温度范围和湿度范围等控制信息,并显示实时风量值、温度信息和湿度信息等状态信息,便于人机交互。Preferably, the fume hood 300 is further provided with a man-machine interface 305 for inputting control information such as a preset frequency, a preset temperature range and a humidity range, and displaying status information such as real-time air volume value, temperature information, and humidity information, which is convenient for a person. Machine interaction.
综上所述,本发明提供的风阀控制方法、控制装置、控制系统、非易失性存储介质和通风柜,通过检测风阀的实时通风量和根据安全面风速得到当前通风柜所需要的标准风量,将实时风量值和标准风量值进行对比,根据对比的结果反馈来调节风阀的开启角度,可适用于各种风阀,并且排除了管道气压,室内空气流动及人为外在因素的干扰,能够实现更为安全、高效、节能、智能的通风量调节,具有很高的实用价值。上述实施例仅例示性说明本发明的原理及其功效,而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下,对上述实施例进行修饰或改变。因此,举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变,仍应由本发明的权利要求所涵盖。 In summary, the present invention provides a damper control method, a control device, a control system, a non-volatile storage medium, and a fume hood, which are required to obtain the current fume hood by detecting the real-time ventilation of the damper and the wind speed according to the safety surface. The standard air volume compares the real-time air volume value with the standard air volume value, and adjusts the opening angle of the damper according to the feedback of the comparison result. It can be applied to various dampers, and excludes the pipeline air pressure, indoor air flow and human external factors. Interference can achieve safer, more efficient, energy-saving, intelligent ventilation adjustment, and has high practical value. The above-described embodiments are merely illustrative of the principles of the invention and its effects, and are not intended to limit the invention. Modifications or variations of the above-described embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and scope of the invention will be covered by the appended claims.

Claims (24)

  1. 一种风阀控制方法,所述风阀设置于通风柜上,所述通风柜设有移门,其特征在于,包括以下步骤:A damper control method is provided on a fume hood, the fume hood is provided with a sliding door, characterized in that it comprises the following steps:
    实时风量检测,当所述风阀维持一定开启角度时,以设定频率检测所述风阀的实时风量;Real-time air volume detection, when the damper maintains a certain opening angle, detecting a real-time air volume of the damper at a set frequency;
    开启面积检测,检测所述移门的开启面积;Opening an area detection to detect an opening area of the sliding door;
    标准风量计算,根据所述开启面积和预设的所述通风柜的安全面风速计算标准风量,所述标准风量为保证所述安全面风速时所述风阀需要的通风量;Calculating a standard air volume according to the opening area and a preset safety surface wind speed of the fume hood, wherein the standard air volume is a ventilation amount required by the damper when the safety surface wind speed is ensured;
    风量差值判断,判断所述实时风量是否在所述标准风量的允许误差值范围内,如果是,则维持所述风阀当前的开启角度;如果不是,则调整所述风阀的开启角度,以使得所述实时风量最终处于所述允许误差值范围内。Judging the air volume difference, determining whether the real-time air volume is within an allowable error value range of the standard air volume, and if so, maintaining a current opening angle of the damper; if not, adjusting an opening angle of the damper, So that the real-time air volume is finally within the allowable error value range.
  2. 如权利要求1所述的风阀控制方法,其特征在于,当所述风阀为排风阀时,所述排风阀的标准风量计算是根据以下公式进行的:The damper control method according to claim 1, wherein when the damper is an exhaust damper, the standard air volume calculation of the venting valve is performed according to the following formula:
    Q1=V·S;Q 1 =V·S;
    其中,Q1为所述排风阀的标准风量,V为预设的安全面风速,S为所述移门的开启面积。Wherein Q 1 is the standard air volume of the exhaust valve, V is a preset safety surface wind speed, and S is an opening area of the sliding door.
  3. 如权利要求2所述的风阀控制方法,其特征在于,当所述风阀还包括补风阀时,所述补风阀的标准风量为Q2=n Q1,其中,Q2为所述补风阀的标准风量,n的取值范围为[0.65,0.7]。The damper control method according to claim 2, wherein when the damper further comprises a supplemental damper, the standard air volume of the plenum valve is Q 2 = n Q 1 , wherein Q 2 is The standard air volume of the air supply valve, the value range of n is [0.65, 0.7].
  4. 如权利要求1-3中任一所述的风阀控制方法,其特征在于,所述开启面积检测步骤具体包括:The damper control method according to any one of claims 1 to 3, wherein the opening area detecting step specifically comprises:
    开启高度检测,检测所述移门的开启高度;Turning on height detection to detect the opening height of the sliding door;
    开启面积计算,将所述开启高度进一步结合所述移门的移门总高以及所述移门的宽度,根据以下公式计算得到所述移门的开启面积:Opening area calculation, further combining the opening height with the total height of the sliding door of the sliding door and the width of the sliding door, and calculating the opening area of the sliding door according to the following formula:
    S=(H-h)·L;S=(H-h)·L;
    其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。 Where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the width of the sliding door.
  5. 如权利要求1所述的风阀控制方法,其特征在于,所述设定频率为大于或等于40ms/次。The damper control method according to claim 1, wherein said set frequency is greater than or equal to 40 ms/time.
  6. 如权利要求1所述的风阀控制方法,其特征在于,在所述风量差值判断步骤中,当所述实时通风量不在所述标准风量的允许误差值范围时,The damper control method according to claim 1, wherein in the air volume difference determining step, when the real-time ventilation amount is not within an allowable error value range of the standard air volume,
    如果所述实时通风量大于所述标准风量的允许误差值范围的最高值,则减小所述风阀的开启角度;If the real-time ventilation amount is greater than a highest value of the allowable error value range of the standard air volume, reducing an opening angle of the damper;
    如果所述实时通风量小于所述标准风量的允许误差值范围的最低值,则增大所述风阀的开启角度。If the real-time ventilation amount is less than the lowest value of the allowable error value range of the standard air volume, the opening angle of the damper is increased.
  7. 如权利要求1或6所述的风阀控制方法,其特征在于,所述标准风量的允许误差值为0。The damper control method according to claim 1 or 6, wherein the allowable error value of the standard air volume is zero.
  8. 一种风阀控制装置,所述风阀设置于通风柜上,所述通风柜设有移门,其特征在于,包括以下模块:A damper control device is disposed on a fume hood, the fume hood is provided with a sliding door, and is characterized by comprising the following modules:
    实时风量检测模块,用于当所述风阀维持一定开启角度时,以设定频率检测所述风阀的实时风量;a real-time air volume detecting module, configured to detect a real-time air volume of the damper at a set frequency when the damper maintains a certain opening angle;
    开启面积检测模块,用于检测所述移门的开启面积;Opening an area detecting module for detecting an opening area of the sliding door;
    标准风量计算模块,用于根据所述开启面积和预设的所述通风柜的安全面风速,计算标准风量,所述标准风量为保证所述安全面风速时所述风阀需要的通风量;a standard air volume calculation module, configured to calculate a standard air volume according to the opening area and a preset safety surface wind speed of the fume hood, wherein the standard air volume is a required ventilation amount when the safety surface wind speed is ensured;
    风量差值判断模块,用于判断所述实时风量是否在所述标准风量的允许误差值范围内,如果是,则维持所述风阀当前的开启角度;如果不是,则调整所述风阀的开启角度,以使得所述实时风量最终处于所述允许误差值范围内。The air volume difference determining module is configured to determine whether the real-time air volume is within an allowable error value range of the standard air volume, and if yes, maintain a current opening angle of the damper; if not, adjust the damper The angle is turned on such that the real-time air volume is ultimately within the allowable error value range.
  9. 如权利要求8所述的风阀控制装置,其特征在于,当所述风阀为排风阀时,所述排风阀的标准风量计算是根据以下公式进行的:The damper control device according to claim 8, wherein when the damper is an exhaust damper, the standard air volume calculation of the venting valve is performed according to the following formula:
    Q1=V·S;Q 1 =V·S;
    其中,Q1为所述排风阀的标准风量,V为预设的安全面风速,S为所述移门的开启面积。Wherein Q 1 is the standard air volume of the exhaust valve, V is a preset safety surface wind speed, and S is an opening area of the sliding door.
  10. 如权利要求9所述的风阀控制装置,其特征在于,当所述风阀还包括补风阀时, 所述补风阀的标准风量为Q2=n Q1,其中,Q2为所述补风阀的标准风量,n的取值范围为[0.65,0.7]。Damper control device according to claim 9, wherein, when said damper further comprises a damper complement, the complement standard air volume damper is Q 2 = n Q 1, wherein, Q 2 is the The standard air volume of the air supply valve, the value range of n is [0.65, 0.7].
  11. 如权利要求8-10中任一所述的风阀控制装置,其特征在于,所述开启面积检测模块具体包括:The damper control device according to any one of claims 8 to 10, wherein the opening area detecting module specifically comprises:
    开启高度检测模块,用于检测所述移门的开启高度;Opening a height detecting module for detecting an opening height of the sliding door;
    开启面积计算模块,用于将所述开启高度进一步结合所述移门的移门总高以及所述移门的宽度,根据以下公式计算得到所述移门的开启面积:And an opening area calculation module, configured to further combine the opening height with the total height of the sliding door of the sliding door and the width of the sliding door, and calculate an opening area of the sliding door according to the following formula:
    S=(H-h)·L;S=(H-h)·L;
    其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。Where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the width of the sliding door.
  12. 如权利要求8所述的风阀控制装置,其特征在于,所述设定频率为大于或等于40ms/次。The damper control device according to claim 8, wherein said set frequency is greater than or equal to 40 ms/time.
  13. 如权利要求8所述的风阀控制装置,其特征在于,在所述风量差值判断模块中,当所述实时通风量不在所述标准风量的允许误差值范围时,如果所述实时通风量大于所述标准风量的允许误差值范围的最高值,则减小所述风阀的开启角度;如果所述实时通风量小于所述标准风量的允许误差值范围的最低值,则增大所述风阀的开启角度。The damper control device according to claim 8, wherein in the air volume difference determining module, when the real-time ventilation amount is not within an allowable error value range of the standard air volume, if the real-time ventilation amount Increasing a maximum value of the allowable error value range of the standard air volume, reducing an opening angle of the damper; if the real-time ventilation amount is less than a lowest value of an allowable error value range of the standard air volume, increasing the The opening angle of the damper.
  14. 如权利要求8或13所述的风阀控制装置,其特征在于,所述标准风量的允许误差值为0。The damper control device according to claim 8 or 13, wherein the allowable error value of said standard air volume is zero.
  15. 一种风阀控制装置,所述风阀设置于通风柜上,所述通风柜设有移门,其特征在于,包括:A damper control device, the damper is disposed on a fume hood, and the ventilating cabinet is provided with a sliding door, and the ventilating valve is characterized by comprising:
    实时风量检测部,所述实时风量检测部与所述风阀相连接,从所述风阀处获取实时风量信号,所述实时风量为当所述风阀维持一定开启角度时,所述实时风量检测部以设定频率检测到的所述风阀的通风量;a real-time air volume detecting unit, wherein the real-time air volume detecting unit is connected to the damper, and acquires a real-time air volume signal from the damper, wherein the real-time air volume is the real-time air volume when the damper maintains a certain opening angle a ventilation amount of the damper detected by the detecting portion at a set frequency;
    开启面积检测部,所述开启面积检测部与所述移门相连接,从所述移门处获取所述移门的开启面积信号; Opening an area detecting unit, wherein the opening area detecting unit is connected to the sliding door, and acquiring an opening area signal of the sliding door from the sliding door;
    标准风量计算部,接收所述开启面积信号,并且根据所述开启面积信号和预设的所述通风柜的安全面风速来输出标准风量信号,所述标准风量为保证所述安全面风速时所述风阀需要的通风量;The standard air volume calculation unit receives the open area signal, and outputs a standard air volume signal according to the open area signal and a preset safety surface wind speed of the fume hood, where the standard air volume is to ensure the wind speed of the safety surface Describe the amount of ventilation required for the damper;
    风量差值判断部,接收所述实时风量信号和所述标准风量信号,输出风阀控制信号,其中,所述风阀控制信号所实施的控制动作包括:The air volume difference determining unit receives the real-time air volume signal and the standard air volume signal, and outputs a damper control signal, wherein the control action performed by the damper control signal includes:
    当所述实时风量在所述标准风量的允许误差值范围内时,维持所述风阀当前的开启角度;Maintaining a current opening angle of the damper when the real-time air volume is within an allowable error value of the standard air volume;
    当所述实时风量不在所述标准风量的允许误差值范围内时,调整所述风阀当前的开启角度,以使得所述实时风量最终处于所述允许误差值范围内。When the real-time air volume is not within the allowable error value range of the standard air volume, the current opening angle of the damper is adjusted such that the real-time air volume is finally within the allowable error value range.
  16. 如权利要求15所述的风阀控制装置,其特征在于,当所述风阀为排风阀时,所述排风阀的标准风量计算是根据以下公式进行的:The damper control device according to claim 15, wherein when said damper is an exhaust damper, said standard air volume calculation of said venting valve is performed according to the following formula:
    Q1=V·S;Q 1 =V·S;
    其中,Q1为所述排风阀的标准风量,V为预设的安全面风速,S为所述移门的开启面积。Wherein Q 1 is the standard air volume of the exhaust valve, V is a preset safety surface wind speed, and S is an opening area of the sliding door.
  17. 如权利要求16所述的风阀控制装置,其特征在于,当所述风阀还包括补风阀时,所述补风阀的标准风量为Q2=n Q1,其中,Q2为所述补风阀的标准风量,n的取值范围为[0.65,0.7]。The damper control device according to claim 16, wherein when the damper further comprises a supplemental damper, the standard air volume of the plenum valve is Q 2 = n Q 1 , wherein Q 2 is The standard air volume of the air supply valve, the value range of n is [0.65, 0.7].
  18. 如权利要求15-17中任一所述的风阀控制装置,其特征在于,所述开启面积检测部进一步包括:The damper control device according to any one of claims 15-17, wherein the opening area detecting portion further comprises:
    开启高度检测部,与所述移门相连接来检测所述移门的开启高度;Opening a height detecting portion connected to the sliding door to detect an opening height of the sliding door;
    开启面积计算部,接收开启高度信号,并且进一步结合所述移门的移门总高以及所述移门的宽度,根据以下公式计算得到所述移门的开启面积:The opening area calculating unit receives the opening height signal, and further combines the total height of the sliding door of the sliding door and the width of the sliding door to calculate an opening area of the sliding door according to the following formula:
    S=(H-h)·L;S=(H-h)·L;
    其中,S为所述移门的开启面积,H为移门总高,h为所述移门的开启高度,L为移门的宽度。Where S is the opening area of the sliding door, H is the total height of the sliding door, h is the opening height of the sliding door, and L is the width of the sliding door.
  19. 如权利要求15所述的风阀控制装置,其特征在于,所述设定频率为大于或等于40ms/次。 The damper control device according to claim 15, wherein said set frequency is greater than or equal to 40 ms/time.
  20. 如权利要求15所述的风阀控制装置,其特征在于,在所述风量差值判断部中,当判断所述实时风量不在所述标准风量的允许误差值范围时,所述风阀控制信号所实施的控制动作具体包括:The damper control device according to claim 15, wherein in the air volume difference determining portion, when it is determined that the real-time air volume is not within an allowable error value range of the standard air volume, the damper control signal The control actions implemented include:
    如果所述实时风量大于所述标准风量的允许误差值范围的最高值,则减小所述风阀的开启角度;If the real-time air volume is greater than a highest value of the allowable error value range of the standard air volume, reducing an opening angle of the damper;
    如果所述实时风量小于所述标准风量的允许误差值范围的最低值,则增大所述风阀的开启角度。If the real-time air volume is less than the lowest value of the allowable error value range of the standard air volume, the opening angle of the damper is increased.
  21. 如权利要求15或20所述的风阀控制装置,其特征在于,所述标准风量的允许误差值为0。The damper control device according to claim 15 or 20, wherein the allowable error value of the standard air volume is zero.
  22. 一种风阀控制系统,所述风阀设置于通风柜上,所述通风柜设有移门,其特征在于,包括如权利要求8-21中任一所述的风阀控制装置。A damper control system is provided on a fume hood, the fume hood being provided with a sliding door, characterized by comprising the damper control device according to any one of claims 8-21.
  23. 一种通风柜,其上设有风阀和移门,其特征在于,包括如权利要求22所述的风阀控制系统。A fume hood having a damper and a sliding door thereon, comprising the damper control system of claim 22.
  24. 如权利要求23所述的通风柜,其特征在于,所述通风柜还设有人机界面,用于输入控制信息和显示所述通风柜的状态信息。 A fume hood according to claim 23, wherein said fume hood is further provided with a human machine interface for inputting control information and displaying status information of said fume hood.
PCT/CN2017/092084 2017-05-19 2017-07-06 Air valve control method, control device, control system, and fume hood WO2018209779A1 (en)

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