KR20200114537A - a method for controlling face velocity of fume hood - Google Patents

a method for controlling face velocity of fume hood Download PDF

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KR20200114537A
KR20200114537A KR1020190036472A KR20190036472A KR20200114537A KR 20200114537 A KR20200114537 A KR 20200114537A KR 1020190036472 A KR1020190036472 A KR 1020190036472A KR 20190036472 A KR20190036472 A KR 20190036472A KR 20200114537 A KR20200114537 A KR 20200114537A
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South Korea
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wind speed
blower
surface wind
fume hood
door
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KR1020190036472A
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Korean (ko)
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KR102256053B1 (en
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최진선
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최진선
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L1/00—Enclosures; Chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing 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
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06—Fluid handling related problems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/04—Closures and closing means
    • B01L2300/046—Function or devices integrated in the closure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/10—Means to control humidity and/or other gases

Abstract

The present invention relates to a method for controlling a face velocity of fume hoods, which allows fume hoods to maintain a face velocity value stored in advance in a controller by operating a blower and a damper according to the open state of a door, measures a rotation angle of the damper and a number of rotation at which the face velocity value is maintained when the door is opened at the maximum by an initialization test, and corrects the number of rotation and the rotation angle according to how much the door is opened at a constant face velocity by the measured number of rotation and rotation angle.

Description

흄후드의 면풍속 제어방법{a method for controlling face velocity of fume hood}A method for controlling face velocity of fume hood}

본 발명은 흄후드가 도어의 개방상태에 따라 송풍기 및 댐퍼를 조작하여 컨트롤러에 미리 저장되는 면풍속값을 유지하도록 하고, 초기화 시험에 의한 도어의 최대 열림시 면풍속값이 유지되는 회전수 및 댐퍼의 회전각을 측정하며, 측정된 회전수 및 회전각에 의해 일정 면풍속에서 도어의 열림정도에 따른 회전수 및 회전각을 보정토록 하는 흄후드의 면풍속 제어방법에 관한 것이다.The present invention allows the fume hood to maintain the surface wind speed value stored in advance in the controller by operating the blower and the damper according to the open state of the door. The present invention relates to a method of controlling the surface wind speed of a fume hood that measures the rotational angle of the fume hood and corrects the rotational speed and rotation angle according to the degree of opening of the door at a certain surface wind speed by the measured rotational speed and rotation angle.

일반적으로 흄후드는 유해화학물질을 취급하는 장소나 실험실 등에 설치되어 인체에 유해한 가스, 악취, 증기등의 기체를 외부로 강제 배기시켜 쾌적한 실험실 작업환경을 유지하는 필수설비로서, 상기 흄후드는 내부에 작업공간이 형성되도록 작업 플레이트가 구비되고, 전면에는 도어가 상하로 개폐 가능하게 구비되며, 상부에는 배기덕트가 구비되어 작업공간에서 발생하는 유해 기체가 배기되도록 되어 있다.In general, a fume hood is installed in a place or laboratory where hazardous chemicals are handled, and is an essential facility to maintain a comfortable laboratory work environment by forcibly exhausting gases, such as gases, odors, and vapors, which are harmful to the human body. A working plate is provided so that a working space is formed, a door is provided to open and close up and down on the front side, and an exhaust duct is provided on the upper part to exhaust harmful gases generated in the work space.

이와 같이 구성된 흄후드의 전면에 구비된 도어를 적절히 개방시킨 상태에서 작업 플레이트에 놓여진 실험기구를 이용하여 실험하며, 상기 실험중에 발생되는 유해 기체는 배기덕트를 통해서 외부로 배기시키면서 작업을 하게 된다.The experiment is performed using the experiment equipment placed on the working plate with the door provided in the front of the fume hood configured as described above properly opened, and the harmful gas generated during the experiment is exhausted to the outside through the exhaust duct.

이때, 상기 흄후드는 전면 도어의 개폐 면적에 따라 공기의 배기량의 변환하도록 설계하여 도어 개폐에 따른 면풍속이 설정치 이상 또는 이하로 불안전 운전이 될 경우 또는 위험한 가스가 발생할 경우 자동으로 배기량을 조절하여 주는 제어장치가 필요하다.At this time, the fume hood is designed to convert the amount of air exhausted according to the opening and closing area of the front door, and automatically adjusts the amount of exhaust when the surface wind speed of the door is opened or closed is unsafe operation above or below the set value or when dangerous gas occurs. You need a control device to give.

이와같은 기술과 관련되어 본 발명의 출원인이 종래의 특허 제1085512호에 흄후드의 면풍속 제어시스템의 기술을 제시한 바 있으며 그 구성은 도1에서와 같이, 흄후드(10), 제어기(20), 풍속센서(30), 댐퍼(40), 송풍기(50)를 포함한다.In connection with such a technique, the applicant of the present invention has proposed a technique of a surface wind speed control system of a fume hood in conventional patent No. 1085512, and the configuration is as shown in FIG. 1, a fume hood 10, a controller 20 ), wind speed sensor 30, damper 40, and a blower 50.

그리고, 상기 흄후드(10)는 유해화학물질을 취급하는 장소나 실험실 등에 설치되어 사용자에 유해 기체를 외부로 강제배기시켜 쾌적한 실험실 작업환경을 유지하게 되며, 상기 흄후드(10)는 내부에 작업공간이 형성되고, 전면에는 도어(11)가 상하로 개폐되게 구비되며, 후방 상부에는 외부로 유해 기체를 배출하는 배기덕트(12)가 구비된다.In addition, the fume hood 10 is installed in a place or a laboratory that handles hazardous chemicals, forcibly exhausting harmful gases to the outside to maintain a pleasant laboratory working environment, and the fume hood 10 works inside A space is formed, and the door 11 is provided to open and close up and down on the front side, and an exhaust duct 12 for discharging harmful gas to the outside is provided at the rear upper part.

더하여, 상기 제어기(20)에서는 현재 면풍속을 표시함과 아울러, 기 설정된 알고리즘으로 저장된 면풍속을 유지하도록 제어신호를 상기 댐퍼(40) 및 송풍기(50)에 전송하여 댐퍼(40)의 열림각도 및 송풍기(50)의 회전속도를 제어토록 한다.In addition, the controller 20 displays the current surface wind speed and transmits a control signal to the damper 40 and the blower 50 so as to maintain the surface wind speed stored with a preset algorithm, and the opening angle of the damper 40 And to control the rotational speed of the blower 50.

그러나, 상기와 같은 면풍속 제어시스템은, 기 설정된 알고리즘에 의하여 송풍기(50)가 동작하거나 댐퍼(40)의 열림각도가 조절되는 구성으로 흄후드 사양, 송풍기 용량, 설치환경 등 다양한 조건을 갖는 흄후드에 통일적으로 적용시 오차가 발생할 수 있고, 도어(11) 열림시 면풍속 센싱, 비교 후 단계적으로 제어신호를 전송하기에 딜레이 타임이 존재하여 오염된 공기의 신속하고 효과적인 배기가 힘들게 되는 단점이 있는 것이다.However, the surface wind speed control system as described above is a configuration in which the blower 50 operates or the opening angle of the damper 40 is adjusted by a preset algorithm, and has various conditions such as fume hood specifications, fan capacity, and installation environment. When applied to the hood unifiedly, errors may occur, and there is a delay time to sense the surface wind speed when the door 11 is opened and to transmit the control signal step by step after comparison, making it difficult to quickly and effectively exhaust the polluted air. There is.

상기와 같은 종래의 문제점들을 개선하기 위한 본 발명의 목적은, 쾌적한 실험실 작업환경을 유지하는 흄후드에서 면풍속의 설정작업이 용이하게 이루어 지도록 하고, 설정된 면풍속이 유지되도록 송풍기의 회전속도와 댐퍼의 열림각도를 효율적으로 조절할 수 있도록 하며, 딜레이타임을 최소화 하여 실제 상황을 반영한 즉각적 제어가 가능토록 하고, 원격지에서도 사용자의 임의로 작동상태의 제어가 가능토록 하는 흄후드의 면풍속 제어방법을 제공하는데 있다.An object of the present invention for improving the conventional problems as described above is to facilitate setting operation of the surface wind speed in a fume hood that maintains a comfortable laboratory work environment, and to maintain the set surface wind speed and the rotation speed and damper of the blower. It provides a method of controlling the surface wind speed of the fume hood that allows the user to efficiently control the opening angle of the door, minimizes the delay time to allow immediate control that reflects the actual situation, and allows the user to control the operating state at a remote location. have.

본 발명은 상기 목적을 달성하기 위하여, 흄후드가 설정 면풍속을 유지하도록 하고, The present invention allows the fume hood to maintain a set surface wind speed in order to achieve the above object,

상기 면풍속은, 초기화 시험에 의한 도어의 열림정도를 센싱한 후 인버터의 회전수 및 댐퍼의 회전각을 보정토록 설치되는 흄후드의 면풍속 제어방법을 제공한다.The surface wind speed provides a method for controlling the surface wind speed of a fume hood, which is installed to correct the rotational speed of the inverter and the rotational angle of the damper after sensing the degree of opening of the door by the initialization test.

더하여, 상기 면풍속은, 도어의 열림상태에 따른 거리측정시 최대부하로 구동하는 거시조정과 일정이하 부하로 구동하는 미시조정구간으로 송풍기가 동작하는 흄후드의 면풍속 제어방법을 제공한다.In addition, the surface wind speed provides a method for controlling the surface wind speed of a fume hood in which a blower operates in a macro adjustment section driven by a maximum load and a micro adjustment section driven by a load below a certain level when measuring a distance according to an open state of a door.

또한, 상기 면풍속은, 비젼이 더 구비되어 사용되는 시약에 따라 블로워의 동작이 제어토록 하는 흄후드의 면풍속 제어방법을 제공한다.In addition, the surface wind speed provides a method for controlling the surface wind speed of the fume hood in which the vision is further provided and the operation of the blower is controlled according to the reagent used.

계속하여, 상기의 도어의 거리는 레이져센서 또는 엔코더를 사용토록 하는 흄후드의 면풍속 제어방법을 제공한다.Subsequently, the distance of the door provides a method for controlling the surface wind speed of the fume hood using a laser sensor or an encoder.

이상과 같이 본 발명에 의하면, 쾌적한 실험실 작업환경을 유지하는 흄후드에서 면풍속의 설정작업이 용이하게 이루어 지고, 설정된 면풍속이 유지되도록 송풍기의 회전속도와 댐퍼의 열림각도를 효율적으로 신속하게 조절하며, 딜레이타임을 최소화 하여 실제 상황을 반영한 제어가 가능하고, 원격지에서도 사용자의 임의로 작동상태의 제어가 가능한 효과가 있는 것이다.As described above, according to the present invention, the operation of setting the surface wind speed is easily performed in the fume hood that maintains a comfortable laboratory work environment, and the rotation speed of the blower and the opening angle of the damper are efficiently and quickly adjusted so that the set surface wind speed is maintained. And, by minimizing the delay time, it is possible to control that reflects the actual situation, and it is possible to control the operation state at the user's discretion even at a remote location.

도1은 종래의 흄후드 면풍속 제어시스템을 설명하기 위한 설치상태도이다.
도2는 본 발명에 따른 면풍속 제어방법이 적용된 흄후드의 설치상태도이다.
도3은 본 발명에 따른 도어의 개방에 따른 송풍기의 회전상태를 도시한 모식도이다.
도4는 본 발명에 따른 면풍속에 따른 송풍기의 회전수 보정에 관한 순서도이다.1 is an installation state diagram for explaining a conventional fume hood surface wind speed control system.
2 is a diagram illustrating an installation state of a fume hood to which a method for controlling a surface wind speed according to the present invention is applied.
3 is a schematic diagram showing a rotational state of a blower when a door is opened according to the present invention.
Figure 4 is a flow chart for the correction of the rotation speed of the blower according to the surface wind speed according to the present invention.

이하, 첨부된 도면에 의거하여 본 발명의 실시예를 상세하게 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도2는 본 발명에 따른 면풍속 제어방법이 적용된 흄후드의 설치상태도이고. 도3은 본 발명에 따른 도어의 개방에 따른 송풍기의 회전상태를 도시한 모식도이며, 도4는 본 발명에 따른 면풍속에 따른 송풍기의 회전수 보정에 관한 순서도이다.2 is a diagram illustrating an installation state of a fume hood to which a method for controlling a surface wind speed according to the present invention is applied. 3 is a schematic diagram showing a rotational state of a blower according to an opening of a door according to the present invention, and FIG. 4 is a flowchart of correction of the rotational speed of a blower according to a surface wind speed according to the present invention.

본 발명은, 흄후드(100)의 컨트롤러(130)에는 설정된 면풍속이 미리 입력되어 흄후드(100)의 동작시 도어(150)의 개방상태에 따라 댐퍼(140)의 개방 및 송풍기(170) 회전수가 인버터 방식으로 조절토록 설치되며, 상기 송풍기는 BLDC(BrushLess Direct Current)모터가 사용된다.In the present invention, the set surface wind speed is input to the controller 130 of the fume hood 100 in advance, and the opening of the damper 140 and the blower 170 according to the open state of the door 150 when the fume hood 100 is operated. The number of revolutions is installed to be adjusted by an inverter method, and the blower uses a BLDC (BrushLess Direct Current) motor.

그리고, 상기 댐퍼의 개방 후 송풍기의 구동시 오염된 공기를 여과한 후 배기토록 설치된다.In addition, when the blower is driven after opening the damper, it is installed to filter contaminated air and then exhaust the air.

즉, 상기 도어(150)의 열림정도에 따른 면풍속값이 미리 설정되어 도어의 열림정도에 따라 송풍기(170)의 회전수 및 댐퍼(140)의 개방상태가 컨트롤러(130)에 미리 설정토록 설치된다.That is, the surface wind speed value according to the degree of opening of the door 150 is set in advance, and the number of rotations of the blower 170 and the open state of the damper 140 are set in advance in the controller 130 according to the degree of opening of the door. do.

또한, 상기 송풍기(170)의 동일 회전상태에서 댐퍼(140)의 개방정도에 따라 면풍속값이 결정될 수도 있으며, 상기 송풍기 및 댐퍼의 상대적인 상호 동작에 의해 면풍속값의 제어가 가능토록 된다.In addition, the surface wind speed value may be determined according to the degree of opening of the damper 140 in the same rotational state of the blower 170, and the surface wind speed value can be controlled by the relative mutual operation of the blower and the damper.

즉, 본 발명은 초기화 시험으로 도어의 최저 또는 최대 열림시 설정 면풍속값을 유지되는 송풍기의 회전수 및 댐퍼의 회전각을 측정하고, 상기 측정된 회전수 및 회전각이 컨트롤러에 미리 저장된 최대 열림시 표준상태의 회전수와 회전각과 차이가 있을 경우 데이터 보상하여 도어의 열림정도에 비례하는 제어 후 실제 센싱값에 수렴토록 한다.That is, the present invention measures the number of rotations of the blower and the rotation angle of the damper that maintains the set surface wind speed value when the door is opened at the lowest or maximum by an initialization test, and the measured rotation speed and rotation angle are stored in the controller in advance. When there is a difference between the number of rotations and the rotation angle of the standard state, data is compensated and controlled in proportion to the degree of opening of the door, and then converged to the actual sensing value.

그리고, 상기 면풍속값은, 도어(150)의 열림정도를 센서유닛(190)에 의해 미리 센싱한 후 인버터모터로 이루어진 송풍기(170) 회전수 및 댐버(140)의 회전각을 보정토록 설치된다.In addition, the surface wind speed value is installed to correct the rotational speed of the blower 170 made of an inverter motor and the rotation angle of the damper 140 after sensing the degree of opening of the door 150 by the sensor unit 190 in advance. .

즉, 상기 댐퍼(140)를 완전개방한 상태에서 도어(150)의 개방상태에 따라 회전되는 송풍기(170)에 의한 면풍속값을 측정한 후 송풍기(170)의 회전수를 보정하고, 보정된 송풍기(170)의 회전수를 세팅한 상태에서 댐퍼(140)의 회전각에 의한 면풍속값을 측정하여 댐퍼(140)의 회전각을 보정토록 설치된다.That is, after measuring the surface wind speed value by the blower 170 rotated according to the open state of the door 150 in the state where the damper 140 is completely open, the rotation speed of the blower 170 is corrected, and the corrected It is installed to correct the rotation angle of the damper 140 by measuring the surface wind speed value by the rotation angle of the damper 140 in a state in which the rotation speed of the blower 170 is set.

그리고, 상기 면풍속값은, 도어(150)의 열림상태에 따른 거리측정시 최대부하로 구동하는 최대부하구동영역과 일정이하 부하로 정밀구동하는 정밀구동영역으로 구분되어 송풍기(170)의 회전수가 조절토록 설치된다.In addition, the surface wind speed value is divided into a maximum load driving area driving with a maximum load and a precision driving area driving with a load less than a certain amount when measuring the distance according to the open state of the door 150, and the number of rotations of the blower 170 It is installed to be adjusted.

또한, 상기 흄후드(100)은, 비젼(195) 더 구비되어 사용되는 실험하는 시약에 따라 송풍기(170)의 동작이 제어토록 설치된다.In addition, the fume hood 100 is further provided with a vision 195 to control the operation of the blower 170 according to the experimental reagent used.

계속하여, 상기의 도어(150)의 개방정도를 측정하는 센서유닛은 레이져거리측정 센서를 사용토록 한다.Subsequently, the sensor unit for measuring the degree of opening of the door 150 uses a laser distance measuring sensor.

또한, 상기 컨트롤러(130)는, 각 흄후드별 고유번호가 미리지정되어 초기 설치나 미리 입력된 프로그램에 의해 주기적인 보정작업을 수행토록 하고, 보정된 면풍속에 대응되는 송풍기 및 댐퍼의 회전각도 데이터는 최종값으로 저장토록 설치된다.In addition, the controller 130 allows a unique number for each fume hood to be pre-designated to perform periodic correction by initial installation or pre-input program, and the rotation angle of the blower and damper corresponding to the corrected surface wind speed. The data is installed to be saved as the final value.

상기와 같은 구성으로 이루어진 본 발명의 동작을 설명한다.The operation of the present invention made of the above configuration will be described.

도2 내지 도4에서 도시한 바와같이 본 발명은, 흄후드(100)의 컨트롤러(130)에는 설정된 면풍속값이 미리 입력되어 흄후드(100)의 동작에 따라 사용자가 도어(150)의 개방하면 상기 도어의 개방상태에 따라 댐퍼(140)의 개방각도 및 송풍기(170)의 회전수가 조절되면서 일정한 면풍속 값을 유지하게 된다.In the present invention, as shown in FIGS. 2 to 4, a set surface wind speed value is input to the controller 130 of the fume hood 100 in advance, and the user opens the door 150 according to the operation of the fume hood 100. Then, the opening angle of the damper 140 and the number of rotations of the blower 170 are adjusted according to the open state of the door, while maintaining a constant surface wind speed value.

그리고, 상기 송풍기에 연결되는 모터는 BLDC(BrushLess Direct Current)모터가 사용되며, 인버터 방식으로 제어되어 정밀한 회전수 조절이 가능하고 전력의 낭비를 최소화 하도록 한다.In addition, a BLDC (BrushLess Direct Current) motor is used as the motor connected to the blower, and it is controlled by an inverter method to allow precise rotational speed adjustment and minimize power waste.

이때, 종래의 흄후드는 상기와 같은 방법으로 면풍속값을 유지하기 위하여 송풍기(170)의 동작 등을 제어하여 원하는 면풍속값을 유지하기 위한 시간이 증가되어 일반적으로는 원하는 면풍속값을 구현하기 위하여 송풍기의 회전수가 미리 저장토록 된다.At this time, the conventional fume hood controls the operation of the blower 170 to maintain the surface wind speed value in the same manner as described above, so that the time for maintaining the desired surface wind speed value is increased. For this purpose, the number of rotations of the blower is stored in advance.

본 발명에서는 상기와 같이 설정된 면풍속값이 흄후드의 사양에 따라 조금씩 오차가 나는 문제점을 보완토록 먼저 도어를 최대로 개방한 후 구동시 실제 측정되는 면풍속값과 컨트롤러에 미리 입력되는 면풍속값의 차이를 측정한 후 이를 보정하여 흄후드에 최적화된 면풍속값을 신속하게 구현하게 된다.In the present invention, in order to compensate for the problem that the surface wind speed value set as described above slightly differs according to the specifications of the fume hood, the surface wind speed value actually measured during operation after opening the door to the maximum first and the surface wind speed value input in advance to the controller After measuring the difference of, it is corrected to quickly realize the surface wind speed value optimized for the fume hood.

즉, 도4에서와 같이 도어의 최대개방시 실제 측정되는 면풍속값이 컨트롤러에 미리 저장되는 면풍속값보다 클 경우 송풍기에 비하여 흄후드의 실험공간이 적은 것으로 판단되어 송풍기의 회전수를 낮춤으로써 비교되는 면풍속을 일치시켜 이때의 송풍기 회전수를 저장토록 하고, 실제 측정되는 면풍속값이 컨트롤러에 미리 저장되는 면풍속값보다 적을 경우 송풍기의 용량에 비하여 흄후드의 실험공간이 큰 것으로 판단되어 송풍기의 회전수를 증가시킴으로써 비교되는 면풍속을 일치시켜 이때의 송풍기 회전수를 저장토록 하는 보정작업을 수행함으로써 보정에 따른 딜레이 시간을 최소화 하여 신속한 배기가 가능하게 된다. In other words, as shown in Fig. 4, when the actual measured surface wind speed value when the door is opened is larger than the surface wind speed value stored in advance in the controller, it is determined that the experimental space of the fume hood is smaller than that of the blower, and the number of rotations of the blower is reduced. Match the surface wind speed to be compared to store the number of rotations of the fan at this time, and if the actual measured surface wind speed value is less than the surface wind speed value previously stored in the controller, it is judged that the experimental space of the fume hood is larger than the capacity of the blower. By increasing the number of rotations of the blower, a correction operation is performed to match the surface wind speed to be compared to store the number of rotations of the blower at this time, thereby minimizing the delay time according to the correction, thereby enabling rapid exhaust.

또한, 상기 면풍속값은, 상기 댐퍼(140)를 완전개방한 상태에서 도어(150)의 개방상태에 따라 회전되는 송풍기(170)에 의한 면풍속값을 측정한 후 송풍기(170)의 회전수를 보정하고, 보정된 송풍기(170)의 회전수를 세팅한 상태에서 댐퍼(140)의 회전각에 의한 면풍속값을 측정하여 댐퍼(140)의 회전각을 보정한다.In addition, the surface wind speed value is the number of rotations of the blower 170 after measuring the surface wind speed value by the blower 170 rotated according to the open state of the door 150 with the damper 140 fully open. And correcting the rotation angle of the damper 140 by measuring the surface wind speed value by the rotation angle of the damper 140 in a state in which the corrected rotation speed of the blower 170 is set.

그리고, 상기 면풍속값은, 도어(150)의 열림상태에 따른 거리측정시 최대부하로 구동하는 최대부하구동영역과 일정이하 부하로 정밀구동하는 정밀구동영역으로 구분되어 송풍기(170)의 회전수가 조절토록 함으로써 도어의 개방시 면풍속에 일치되는 공기흐름을 신속하게 형성하게 된다.In addition, the surface wind speed value is divided into a maximum load driving area driving with a maximum load and a precision driving area driving with a load less than a certain amount when measuring the distance according to the open state of the door 150, and the number of rotations of the blower 170 By adjusting it, when the door is opened, an air flow consistent with the surface wind speed is quickly formed.

또한, 상기 흄후드(100)은, 비젼(195) 더 구비되어 사용되는 실험하는 시약에 따라 송풍기(170)의 동작이 제어토록 설치되어 위험한 시험시 오염공기를 신속하게 정화하여 배기토록 한다.In addition, the fume hood 100 is further provided with a vision 195 to control the operation of the blower 170 according to the experimental reagent used, so that the contaminated air is quickly purged and exhausted during a dangerous test.

계속하여, 상기의 도어(150)의 개방정도를 측정하는 센서유닛은 레이져거리측정 센서를 사용하여 거리측정이 용이하게 되는 것이다.Subsequently, the sensor unit for measuring the degree of opening of the door 150 can easily measure the distance using a laser distance measurement sensor.

100...흄후드 130...컨트롤러
140...댐퍼 150...도어
170...송풍기100...fume hood 130...controller
140...Damper 150...door
170... blower

Claims (5)

흄후드가 도어의 개방상태에 따라 송풍기 및 댐퍼를 조작하여 컨트롤러에 미리 저장되는 면풍속값을 유지하도록 하고,
상기 면풍속값은, 초기화 시험에 의한 도어의 최대 또는 최소 열림시 설정된 면풍속값이 유지되는 송풍기의 회전수 및 댐퍼의 회전각을 측정하며,
실제 측정값이 컨트롤러에 미리 저장되는 회전수 및 회전각과 차이가 있을 경우 도어의 열림정도와 연동하여 비례제어 및 보정토록 하는 송풍기의 회전수를 보정토록 하는 흄후드의 면풍속 제어방법.The fume hood operates the blower and damper according to the open state of the door to maintain the surface wind speed value stored in advance in the controller.
The surface wind speed value measures the rotational speed of the blower and the rotation angle of the damper at which the set surface wind speed value is maintained when the door is opened at the maximum or minimum by the initialization test
When the actual measured value is different from the rotation speed and rotation angle stored in the controller in advance, it is a method of controlling the face wind speed of the fume hood to correct the rotation speed of the blower that is proportional and corrected in conjunction with the door opening degree. 제1항에 있어서, 상기 면풍속값에 의해 동작하는 송풍기는, 도어의 열림상태에 따른 거리측정시 최대부하로 구동하는 최대부하구동영역과 일정이하 부하로 정밀구동하는 정밀구동영역으로 구분되어 인버터 방식으로 송풍기의 회전수가 조절토록 설치되며, 상기 송풍기는 BLDC(BrushLess Direct Current)모터가 사용되는 것을 특징으로 하는 흄후드의 면풍속 어방법.The inverter according to claim 1, wherein the blower operated by the surface wind speed value is divided into a maximum load driving area driving with a maximum load and a precision driving area driving with a load less than a certain amount when measuring a distance according to an open state of the door. The method of fishing a face wind speed of a fume hood, characterized in that it is installed to adjust the number of rotations of the blower by a method, and the blower uses a brushless direct current (BLDC) motor. 제1항에 있어서, 상기 면풍속값은, 비젼이 더 구비되어 사용되는 시약에 따라 송풍기의 회전수가 조절토록 설치되는 것을 특징으로 하는 흄후드의 면풍속 제어방법.The method according to claim 1, wherein the surface wind speed value is provided so that the number of rotations of the blower is adjusted according to the reagent used by further providing a vision. 제1항에 있어서, 상기의 도어의 거리는 레이져센서 또는 엔코더를 사용토록 하는 것을 특징으로 하는 흄후드의 면풍속 제어방법.The method of claim 1, wherein the distance between the doors is a laser sensor or an encoder. 제1항에 있어서, 상기 컨트롤러는, 각 흄후드별 고유번호가 미리지정되어 초기 설치나 미리 입력된 프로그램에 의해 주기적인 보정작업을 수행토록 하고, 보정된 면풍속에 대응되는 송풍기 및 댐퍼의 회전각도 데이터는 최종값으로 저장토록 설치되는 것을 특징으로 하는 흄후드의 면풍속 제어방법.The method of claim 1, wherein the controller has a unique number for each fume hood pre-designated to perform periodic correction by initial installation or pre-input program, and rotation of a blower and damper corresponding to the corrected surface wind speed. A method for controlling a surface wind speed of a fume hood, characterized in that the angle data is installed to be stored as a final value.
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