JPH0765789B2 - Automatic operation device for air supply fan - Google Patents
Automatic operation device for air supply fanInfo
- Publication number
- JPH0765789B2 JPH0765789B2 JP27070787A JP27070787A JPH0765789B2 JP H0765789 B2 JPH0765789 B2 JP H0765789B2 JP 27070787 A JP27070787 A JP 27070787A JP 27070787 A JP27070787 A JP 27070787A JP H0765789 B2 JPH0765789 B2 JP H0765789B2
- Authority
- JP
- Japan
- Prior art keywords
- differential pressure
- air supply
- supply fan
- signal
- outdoor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Ventilation (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は有効な換気を行うために、室内と室外の圧力差
を適切に保つことができる換気装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device capable of appropriately maintaining a pressure difference between the inside and outside of a room for effective ventilation.
従来の技術 近年、土地を有効に利用するためには建物は高層化して
おり、住宅も例外ではなく、集合住宅も高層化してきて
いる。高層化すれば外風の影響が大きくなり、冷暖房効
果を保つためにも、住宅の気密性が非常に高くなる。2. Description of the Related Art In recent years, in order to make effective use of land, buildings are becoming taller, housing is no exception, and apartment houses are becoming taller. If the building is made taller, the influence of the outside wind will be greater, and the airtightness of the house will be very high in order to maintain the heating and cooling effect.
このようなことから従来の住宅の換気装置は第3図に示
すような構成であった。すなわち、住宅101における排
気口103に排気ファン102を設けるとともに、給気口105
に給気ファン104を設け、排気ファン102を運転すると給
気ファン104が連動して作動し、給気口105から空気を取
り入れながら、居室の換気を行うものであった。For this reason, the conventional ventilation system for a house has the structure shown in FIG. That is, the exhaust fan 102 is provided at the exhaust port 103 of the house 101, and the air supply port 105 is provided.
The air supply fan 104 is provided in the air conditioner, and when the exhaust fan 102 is operated, the air supply fan 104 operates in conjunction with each other to ventilate the living room while taking in air from the air supply port 105.
また、この種の給気ファン104における制御回路は第4
図に示すような構成であった。すなわち差圧スイッチ10
6により室内と室外の圧力差が所定の値以上となった場
合には、差圧スイッチ106の接点をONさせ吸気ファン104
を駆動させ、所定の値以下になった場合には、差圧スイ
ッチ106の接点をOFFさせ給気ファン104を停止させるも
のであった。In addition, the control circuit in this type of air supply fan 104 has a fourth
The configuration was as shown in the figure. Ie differential pressure switch 10
When the pressure difference between the inside and outside of the room becomes equal to or more than a predetermined value by 6, the contact of the differential pressure switch 106 is turned on and the intake fan 104
When the value becomes equal to or less than a predetermined value, the contact point of the differential pressure switch 106 is turned off and the air supply fan 104 is stopped.
発明が解決しようとする問題点 このような従来の構成で、排気ファン102を運転し、室
内と室外の圧力差が所定の値以上になった場合には、差
圧スイッチ106の接点をONさせ吸気ファン104を駆動させ
る。このとき、ドアの開閉または外風によって室内と室
外の圧力差が一時点に所定の値以下になった場合には、
差圧スイッチ106の接点がOFFし、給気ファン104を停止
させる。しかし、前記現象は短時間であるために、再び
室内と室外の圧力差は所定の値以上となり、給気ファン
104は駆動し、動作が不安定になるという問題点があっ
た。Problems to be Solved by the Invention With such a conventional configuration, when the exhaust fan 102 is operated and the pressure difference between the indoor and outdoor exceeds a predetermined value, the contact of the differential pressure switch 106 is turned on. The intake fan 104 is driven. At this time, if the pressure difference between the indoor and outdoor due to the opening and closing of the door or the outside wind falls below the predetermined value at the temporary point,
The contact of the differential pressure switch 106 is turned off, and the air supply fan 104 is stopped. However, since the above-mentioned phenomenon is for a short time, the pressure difference between the indoor and outdoor becomes again a predetermined value or more, and the air supply fan
104 had a problem that it was driven and the operation became unstable.
本発明は、このような問題点を解決するもので、室内と
室内の圧力差が許容範囲に保持されるように給気ファン
の運転を制御するとともに、ドアの開閉または外風の影
響を受けることなしに、安定した快適な換気が行えるよ
うな給気ファンの自動運転装置を提供するものである。The present invention solves such a problem, and controls the operation of the air supply fan so that the pressure difference between the inside and the inside of the room is maintained within an allowable range, and is affected by the opening and closing of the door or the outside wind. It is an object of the present invention to provide an automatic operation device for an air supply fan that enables stable and comfortable ventilation without any problems.
問題点を解決するための手段 この問題点を解決するために本発明は、室内と室内の圧
力差を検知する2個の差圧センサ、すなわち、規定の高
差圧を検知して信号を発生する高差圧検知差圧センサ
と、規定の低差圧を検知して信号を発生する低差圧検知
差圧センサを用いて、これら差圧センサの信号出力があ
る一定時間継続した場合に、モータの回転数を操作する
マイクロコンピュータと、このマイクロコンピュータか
らの出力信号に基づいて回転数を変化させ、室内と室外
の圧力差を許容範囲に維持するように給気ファンを運転
させる駆動回路とを具備してなる給気ファンの自動運転
装置を構成したものである。Means for Solving the Problems In order to solve this problem, the present invention provides two differential pressure sensors that detect a pressure difference between the inside of a room, that is, a specified high differential pressure and generates a signal. Using a high differential pressure detection differential pressure sensor and a low differential pressure detection differential pressure sensor that detects a specified low differential pressure and generates a signal, when the signal output of these differential pressure sensors continues for a certain period of time, A microcomputer that operates the number of rotations of the motor, and a drive circuit that changes the number of rotations based on the output signal from the microcomputer and operates the air supply fan so as to maintain the pressure difference between the indoor and outdoor ranges within an allowable range. An automatic operation device for an air supply fan comprising:
作用 この構成により、室内と室外の圧力差が規定の高差圧よ
り一定時間高くなった場合には給気ファンの回転数を増
して給気量を増加させ、規定の高差圧より継続的に低く
なる迄給気量を増加させ、規定の高差圧より継続的に低
くなったときには回転数を増すことを停止し、そのとき
の回転数を維持する。また、室内と室外の圧力差が規定
の低差圧より一定時間低くなった場合には給気ファンの
回転数を低下させて給気量を低下させ、規定の低差圧よ
り継続的に高くなる迄給気量を低下させ、規定の低差圧
より継続的に高くなったときには回転数を低下すること
を停止し、そのときの回転数を維持する。このようにし
て、室内と室外の圧力差を規定の低差圧と規定の高差圧
の間の適性値に保つとともに、一定時間の継続後に動作
するために、ドアの開閉または外風の影響を受けること
なしに、安定した換気のための給気ファンの自動運転が
できることとなる。Operation With this configuration, when the pressure difference between the indoor and outdoor is higher than the specified high differential pressure for a certain period of time, the rotation speed of the air supply fan is increased to increase the air supply amount, and the continuous high pressure is maintained. The air supply amount is increased until it becomes low, and when it becomes lower than the prescribed high differential pressure continuously, the increase of the rotation speed is stopped and the rotation speed at that time is maintained. In addition, when the pressure difference between the indoor and outdoor is lower than the specified low differential pressure for a certain period of time, the rotation speed of the air supply fan is decreased to reduce the air supply amount, and continuously higher than the specified low differential pressure. The supply air amount is reduced until it reaches a predetermined low differential pressure, and when it becomes continuously higher than the specified low differential pressure, the reduction of the rotation speed is stopped and the rotation speed at that time is maintained. In this way, the pressure difference between the inside and outside of the room is maintained at an appropriate value between the specified low differential pressure and the specified high differential pressure, and in order to operate after a certain period of time, the door is opened or closed or the influence of outside wind is applied. It is possible to automatically operate the air supply fan for stable ventilation without being affected.
実 施 例 以下、本発明の一実施例を第1図および第2図にもとづ
き説明する。EXAMPLES An example of the present invention will be described below with reference to FIGS. 1 and 2.
第2図において、住宅1には排気口3に排気ファン2と
給気口5に給気ファン4と、室外側検出口8および室内
側検出口6を有し、室内10と室外9の圧力差に感応して
規定の高差圧を検知して信号を発生する高差圧検知差圧
センサ11と、規定の低差圧を検知して信号を発生する低
差圧検知差圧センサ12と、高差圧検知差圧センサ11と低
差圧検知センサ12の出力に応じて給気ファン4への出力
状態を決定する自動運転装置7が設けられている。In FIG. 2, the house 1 has an exhaust fan 2 at an exhaust port 3, an air supply fan 4 at an air supply port 5, an outdoor side detection port 8 and an indoor side detection port 6, and pressures inside and outside the room 10. A high differential pressure detection differential pressure sensor 11 that detects a specified high differential pressure in response to a difference and generates a signal, and a low differential pressure detection differential pressure sensor 12 that detects a specified low differential pressure and generates a signal. An automatic driving device 7 that determines the output state to the air supply fan 4 according to the outputs of the high differential pressure detection differential pressure sensor 11 and the low differential pressure detection sensor 12 is provided.
第1図において、高差圧検知差圧センサ11と低差圧検知
差圧センサ12の信号は自動運転装置7の検出部21を経て
マイクロコンピュータ22に入力され、高差圧検知差圧セ
ンサ11と低差圧検知差圧センサ12の信号状態が一定時間
継続したときには、マイクロコンピュータ22から駆動部
23へ出力信号が出され、駆動部23が給気ファン4の回転
数を制御するようになっている。In FIG. 1, the signals of the high differential pressure detection differential pressure sensor 11 and the low differential pressure detection differential pressure sensor 12 are input to the microcomputer 22 via the detection unit 21 of the automatic driving device 7, and the high differential pressure detection differential pressure sensor 11 is detected. When the signal state of the low differential pressure detection differential pressure sensor 12 continues for a certain period of time, the microcomputer 22 drives the drive unit.
An output signal is output to 23, and the drive unit 23 controls the rotation speed of the air supply fan 4.
上記構成における給気ファンの自動運転装置の動作を以
下に説明する。The operation of the automatic driving device for the air supply fan having the above configuration will be described below.
住宅1の排気口3に設けられた排気ファン2を運転する
と、住宅1の室内10と室外9には圧力差が生じる。する
と、室外側検出口8と室内側検出口6において室内10と
室外9に圧力差が生じる。これに応じて規定の高差圧を
越えた場合には、高差圧検知差圧センサ11から検出部21
に信号が伝えられ、検出部21からマイクロコンピュータ
22に伝送される。マイクロコンピュータ22は一定時間継
続していることを確認し、ドアの開閉または外風による
外乱に影響されることなしに、駆動部23を通して給気フ
ァン4の回転数を弱ノッチから中ノッチ,中ノッチから
強ノッチヘと高差圧検知差圧センサ11からの信号が継続
的に停止するまで徐々に回転数を上げて給気量を増加さ
せる。高差圧検知差圧センサ11からの信号が継続して停
止した時点で、そのときの回転数を保持し、一定の給気
量を確保し、規定の高差圧を越えない室内10の状態を保
つ。When the exhaust fan 2 provided in the exhaust port 3 of the house 1 is operated, a pressure difference is generated between the inside 10 and the outside 9 of the house 1. Then, a pressure difference is generated between the indoor space 10 and the outdoor space 9 at the outdoor side detection port 8 and the indoor side detection port 6. Accordingly, when the specified high differential pressure is exceeded, the high differential pressure detection differential pressure sensor 11 to the detection unit 21
To the microcomputer from the detector 21.
Transmitted to 22. The microcomputer 22 confirms that it continues for a certain period of time, and changes the rotation speed of the air supply fan 4 through the drive unit 23 from a weak notch to a medium notch, without being affected by the opening / closing of the door or the disturbance caused by the outside wind. From the notch to the strong notch and until the signal from the high differential pressure detection differential pressure sensor 11 stops continuously, the rotation speed is gradually increased to increase the supply air amount. High differential pressure detection At the time when the signal from the differential pressure sensor 11 continues to stop, the rotation speed at that time is maintained, a certain amount of air supply is secured, and the state of the room 10 where the specified high differential pressure is not exceeded Keep
また、排気ファン2を停止すると、または排気量を減少
させると、住宅1と室内10と室外9の圧力差は減少す
る。すると、室外側検出口8と室内側検出口6において
室内10と室外9に生じていた圧力差は減少する。これに
応じて規定の低差圧以下になった場合には、低差圧検知
センサ12から検出部21に信号が伝えられ、検出部21から
マイクロコンピュータ22に伝送される。マイクロコンピ
ュータ22は一定時間継続していることを確認し、ドアの
開閉または外風による外乱に影響されることなしに、駆
動部23を通して給気ファン4の回転数を強ノッチから中
ノッチ,中ノッチから弱ノッチへと現在の保持されてい
るノッチから低差圧検知差圧センサ12からの信号が継続
的に停止するまで、または給気ファン4が停止するまで
徐々に回転数を下げて給気量を減少させる。低差圧検知
差圧センサ12からの信号が継続的に停止した時点で、そ
のときの回転数を保持し、一定の給気量を確保する。When the exhaust fan 2 is stopped or the exhaust amount is reduced, the pressure difference between the house 1, the room 10 and the outdoor 9 decreases. Then, the pressure difference between the indoor 10 and the outdoor 9 at the outdoor detection port 8 and the indoor detection port 6 decreases. In response to this, when the pressure becomes equal to or lower than the specified low differential pressure, a signal is transmitted from the low differential pressure detection sensor 12 to the detection unit 21, and is transmitted from the detection unit 21 to the microcomputer 22. The microcomputer 22 confirms that it continues for a certain period of time, and changes the rotation speed of the air supply fan 4 through the drive unit 23 from the strong notch to the medium notch, without being affected by the opening / closing of the door or the disturbance caused by the outside wind. From the notch to the weak notch, the rotational speed is gradually reduced until the signal from the low differential pressure detection differential pressure sensor 12 from the currently held notch stops continuously, or until the air supply fan 4 stops. Reduce the volume. Low differential pressure detection At the time when the signal from the differential pressure sensor 12 is continuously stopped, the rotation speed at that time is held to secure a constant air supply amount.
以上のように本実施例によれば、室内10で排気ファン2
を運転しても、高差圧検知差圧センサ11と低差圧検知差
圧センサ12からの出力信号に基づいてマイクロコンピュ
ータ22により給気ファン4の運転を制御し、規定の高差
圧を越えず、規定の低差圧以下にならないように室内10
と室外9の圧力差を効果的な換気が行えるほぼ適当な値
に保持し、また、ドアの開閉や外風の外乱に影響を受け
ることなしに安定した快適性にすぐれた自動換気運転を
することができる。As described above, according to the present embodiment, the exhaust fan 2 is installed in the room 10.
Even if is operated, the microcomputer 22 controls the operation of the air supply fan 4 on the basis of the output signals from the high differential pressure detection differential pressure sensor 11 and the low differential pressure detection differential pressure sensor 12 to obtain the specified high differential pressure. Do not exceed the specified low differential pressure so that the room 10
And the pressure difference between the outdoor 9 and the outdoor 9 are maintained at an almost appropriate value for effective ventilation, and stable and comfortable automatic ventilation operation is performed without being affected by the opening / closing of the door or the external wind disturbance. be able to.
なお、実施例では給気ファン4は交流モータを用いて説
明しているが、回転数制御が可能であるモータの種類に
とらわれないのはいうまでもない。Although the air supply fan 4 is described as an AC motor in the embodiment, it goes without saying that the air supply fan 4 is not limited by the type of motor capable of controlling the rotation speed.
発明の効果 以上の実施例の説明より明らかなように、本発明は、給
気ファン,差圧センサ,マイクロコンピュータ等によ
り、室内と室外の圧力差を効果的な換気ができる値にほ
ぼ一定に保つことができ、安定した快適な換気が可能と
なり、得られる効果はきわめて大きい。EFFECTS OF THE INVENTION As will be apparent from the above description of the embodiments, the present invention makes the pressure difference between the indoor and outdoor sides substantially constant by effective ventilation by the air supply fan, the differential pressure sensor, the microcomputer, and the like. It can be maintained, stable and comfortable ventilation is possible, and the effect obtained is extremely large.
第1図は本発明の一実施例の給気ファンの自動運転装置
の制御回路図、第2図は同構成図、第3図は従来の給気
ファンの自動運転装置の構成図、第4図は同制御回路図
である。 4……給気ファン、11……高差圧検知差圧センサ、12…
…低差圧検知差圧センサ、22……マイクロコンピュー
タ、23……駆動部。FIG. 1 is a control circuit diagram of an automatic operation device for an air supply fan according to an embodiment of the present invention, FIG. 2 is the same configuration diagram, FIG. 3 is a configuration diagram of a conventional automatic operation device for an air supply fan, and FIG. The figure is the same control circuit diagram. 4 ... Air supply fan, 11 ... High differential pressure detection differential pressure sensor, 12 ...
… Low differential pressure detection differential pressure sensor, 22 …… Microcomputer, 23 …… Drive section.
Claims (1)
センサ、すなわち規定の高差圧を検知して信号を発生す
る高差圧検知差圧センサと、規定の低差圧を検知して信
号を発生する低差圧検知差圧センサを備え、これら差圧
センサの信号出力がある一定時間継続した場合に、モー
タの回転数を操作するマイクロコンピュータと、このマ
イクロコンピュータからの出力信号に基づいて回転数を
変化させ、室内と室外の圧力差を許容範囲に維持するよ
うに給気ファンを運転させる駆動回路とを具備してなる
給気ファンの自動運転装置。1. Two differential pressure sensors for detecting a pressure difference between indoor and outdoor, that is, a high differential pressure detection differential pressure sensor for detecting a prescribed high differential pressure and generating a signal, and a prescribed low differential pressure. Equipped with a low differential pressure detection differential pressure sensor that detects and generates a signal.When the signal output of these differential pressure sensors continues for a certain period of time, a microcomputer that operates the number of rotations of the motor and the output from this microcomputer An automatic operation device for an air supply fan, comprising: a drive circuit that changes the rotation speed based on a signal to operate the air supply fan so as to maintain the pressure difference between the indoor and outdoor areas within an allowable range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27070787A JPH0765789B2 (en) | 1987-10-27 | 1987-10-27 | Automatic operation device for air supply fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27070787A JPH0765789B2 (en) | 1987-10-27 | 1987-10-27 | Automatic operation device for air supply fan |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01114643A JPH01114643A (en) | 1989-05-08 |
JPH0765789B2 true JPH0765789B2 (en) | 1995-07-19 |
Family
ID=17489840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27070787A Expired - Fee Related JPH0765789B2 (en) | 1987-10-27 | 1987-10-27 | Automatic operation device for air supply fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0765789B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH720474A1 (en) * | 2023-02-03 | 2024-08-15 | Felix & Co Ag | Ventilation system including a pressure test |
-
1987
- 1987-10-27 JP JP27070787A patent/JPH0765789B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01114643A (en) | 1989-05-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |