JPH0229533A - Control method for outdoor air intake in vav control system - Google Patents
Control method for outdoor air intake in vav control systemInfo
- Publication number
- JPH0229533A JPH0229533A JP63179113A JP17911388A JPH0229533A JP H0229533 A JPH0229533 A JP H0229533A JP 63179113 A JP63179113 A JP 63179113A JP 17911388 A JP17911388 A JP 17911388A JP H0229533 A JPH0229533 A JP H0229533A
- Authority
- JP
- Japan
- Prior art keywords
- air
- amount
- controlled
- outdoor air
- rooms
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 6
- 238000007664 blowing Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000003134 recirculating effect Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Control Of Temperature (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、被制御室からの排気の一部を還気とし外気と
合わせて空調機へ戻す還気手段を備えてなるＶ Ａ Ｖ
ｔ＋Ｉ］御シスナシステムる外気取入制御方法に関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a V A V system comprising a return air means for returning a part of exhaust gas from a controlled room to an air conditioner together with outside air.
t+I] This relates to an outside air intake control method for a control system.
従来より、大規模な構築物において、空調機より給気ダ
クトを介して各部へ給気の供給を行う場合、各空調対象
部位（被制御室）の給気吹出口毎に可変給気量調節ユニ
ット（以下、ＶＡＶユニットと呼ぶ）を設け、このＶＡ
Ｖユニットのダンパ開度を被制御室の室温に応じて制御
し、各被制御室毎の給気吹出量を加減する一方、各ＶＡ
Ｖユニットのダンパ開度に応じて空調機の吹出給気量を
制御するようにしている（本出願人による特願昭５９−
２２７９３３号参照）。Conventionally, in large-scale buildings, when supply air is supplied from an air conditioner to each part via an air supply duct, a variable supply air amount adjustment unit is used for each supply air outlet of each part to be air-conditioned (controlled room). (hereinafter referred to as a VAV unit), and this VA
The damper opening degree of the V unit is controlled according to the room temperature of the controlled room, and the supply air blowout amount for each controlled room is adjusted.
The amount of air supplied to the air conditioner is controlled according to the opening degree of the damper of the V unit (Japanese Patent Application No. 1983-1999 by the present applicant).
227933).
一般にこのようなＶ Ａ Ｖ ＠御システムにおいては
、被制御室からの排気の一部を還気として空調機へ戻す
と共に、この空調機へ戻す還気に対し外気を所定の割合
（一定の割合）で取り入れるようにしている。Generally, in such a V A V @ control system, a part of the exhaust gas from the controlled room is returned to the air conditioner as return air, and outside air is used at a predetermined ratio (a certain ratio) to the return air returned to the air conditioner. ).
しかしながら、このような従来のＶＡＶ制御システムに
おいては、被制御室の室温が設定温度に近づけば近づく
程、ＶＡＶユニットのダンパ開度が絞られ、これに伴い
空調機の吹出給気量が絞られるものとなる。すなわち、
被制御室への給気吹出量が少なくなり、この結果、被制
御室内における外気の絶対量が不足してＣＯ！濃度が高
くなることや、環境が悪化してしまうという問題が生ず
る虞れがあった。However, in such a conventional VAV control system, the closer the room temperature of the controlled room is to the set temperature, the more the damper opening of the VAV unit is reduced, and the amount of air supplied to the air conditioner is accordingly reduced. Become something. That is,
The amount of supply air blown into the controlled room decreases, and as a result, the absolute amount of outside air in the controlled room is insufficient, resulting in CO! There was a risk that the concentration would increase and the environment would deteriorate.
本発明はこのような課題を解決するためになされたもの
で、空調機へ戻す還気に対して取り入れる外気量（外気
取入量）を、その空調機の吹出給気量に応じて制御する
ようにしたものである。The present invention has been made to solve these problems, and it controls the amount of outside air taken in for the return air returned to the air conditioner (outside air intake amount) according to the amount of air blown out from the air conditioner. This is how it was done.
したがってこの発明によれば、吹出給気量の減少に対し
外気取入量を大とするように制御すれば、被制御室への
給気吹出量の減少に対しその含有外気の割合を大として
、被制御室内における外気の絶対量の不足を補うことが
可能となる。Therefore, according to the present invention, if the amount of outside air intake is controlled to be increased in response to a decrease in the amount of air supplied to the controlled room, the ratio of the outside air contained in the amount of air to the controlled room is increased in response to a decrease in the amount of air blown into the controlled room. , it becomes possible to compensate for the lack of absolute amount of outside air in the controlled room.
以下、本発明に係るＶＡＶ制御システムにおける外気取
入制御方法を詳細に説明する。Hereinafter, the outside air intake control method in the VAV control system according to the present invention will be explained in detail.
第２図はこの外気取入制御方法の一実施例を適用してな
るＶＡＶ制御システムの計装図である。FIG. 2 is an instrumentation diagram of a VAV control system to which an embodiment of this outside air intake control method is applied.
同図において、１は空調機であり、電動弁２を介して冷
水ＣＷの供給される冷却コイルＣＣ１電動弁３を介して
温水ＨＷの供給される加熱コイルＨＣ，および可変回転
速度（インバータ制御）のファンＦにより構成されてい
る。空調機１．電動弁２および電動弁３はその動作が制
御装置４により制御されるものとなっており、空調機１
においてそのファンＦより吹き出される給気（吹出給気
）が、給気ダクト５を介し被制御室６−１〜６−７へ供
給されるものとなっている。In the figure, 1 is an air conditioner, which includes a cooling coil CC to which cold water CW is supplied via an electric valve 2, a heating coil HC to which hot water HW is supplied via an electric valve 3, and a variable rotation speed (inverter control). It is composed of a fan F. Air conditioner 1. The operation of the electric valve 2 and the electric valve 3 is controlled by a control device 4, and the operation of the electric valve 2 and the electric valve 3 is controlled by a control device 4.
The supply air (blown supply air) blown out from the fan F is supplied to the controlled rooms 6-1 to 6-7 via the air supply duct 5.
被制御室６−１〜６−７には各室毎に室温を検出する温
度センサＴ−１〜Ｔ−，が設けられており、この温度セ
ンサＴ−１〜Ｔ−，の検出々力が局部的な調節器１−１
〜７−．１へ各個に与えられており、この調節器７−１
〜７−７が温度センサＴ−１〜Ｔ−，の検出々力に応じ
、給気ダクト５から分岐して各吹出口毎に挿入配置され
たＶＡＶユニッ）８−ｔ〜８−７へ指令を与え、この指
令に基づきＶＡＶユニット８−１〜８−７のダンパ開度
が室温に応じて制御されるものとなっている。一方、調
節器７−、〜７−１ｌは伝送路りを介して制御装置４と
接続され、ＶＡＶユニット８−１〜８−９のダンパ開度
あるいは風量を示すデータが制御装置４へ与えられるも
のとなっており、これらのデータに基づき制御装置４が
制御演算を行い、ファンＦのインバータ制御を行いその
回転数を加減し、給気ダクト５への吹出給気量を可変す
るものとなっている。The controlled rooms 6-1 to 6-7 are each equipped with temperature sensors T-1 to T-, which detect the room temperature, and the detection power of the temperature sensors T-1 to T- is Local regulator 1-1
~7-. 1, and this regulator 7-1
~7-7 commands VAV units (8-t~8-7) branched from the air supply duct 5 and inserted into each outlet in response to the detected power of the temperature sensors T-1~T-. Based on this command, the damper opening degrees of the VAV units 8-1 to 8-7 are controlled according to the room temperature. On the other hand, the regulators 7-, ~7-1l are connected to the control device 4 via transmission lines, and data indicating the damper opening degrees or air volume of the VAV units 8-1 to 8-9 is provided to the control device 4. Based on these data, the control device 4 performs control calculations, controls the inverter of the fan F, adjusts its rotation speed, and varies the amount of air supplied to the supply air duct 5. ing.
ＶＡＶユニット８−、〜８−７を介して被制御室６−３
〜６−７へ吹き出される給気（給気吹出）は、被制御室
６−、〜６−７における空調制御に貢献したのち、還気
ダクト９を経て排気調整用ダンパ１０を介して排出され
るが、その一部は還気調整用ダンパ１１を介し還気とし
て空調機１へ戻されるものとなっている。そして、この
空調機１へ戻される還気に対し、外気が外気調整用ダン
パ１２を介して取り込まれるものとなっている。そして
、この外気調整用ダンパ１２の開度が、制御装置４から
の指令に基づき、ファンＦの回転数に応じて制御される
ものとなっている。Controlled room 6-3 via VAV units 8-, ~8-7
The supply air (supply air blowout) blown out to ~6-7 contributes to the air conditioning control in the controlled rooms 6- and ~6-7, and then is discharged via the return air duct 9 and the exhaust adjustment damper 10. However, a part of the air is returned to the air conditioner 1 as return air via the return air adjustment damper 11. Then, outside air is introduced into the return air returned to the air conditioner 1 via an outside air adjustment damper 12. The opening degree of this outside air adjustment damper 12 is controlled in accordance with the rotation speed of the fan F based on a command from the control device 4.
第１図はファンＦの回転数に応じて制御される外気調整
用ダンパ１２の開度状況を示す特性図である。すなわち
、ファンＦの回転数の上昇に伴わせて外気調整用ダンパ
１２の開度をＭＡＸ値から徐々に減少させ、所定回転数
Ｎ１に達した以降は、その開度をＭＩＮ値（３０％）に
維持する。即ち、被制御室６−ｔ〜６−７の室温が設定
温度に近づけば近づく程、ｖＡＶユニット８−ｔ〜８−
７のダンパ開度が絞られ、これに伴いファンＦの回転数
が低速制御され、空調機１の吹出給気量が絞られるもの
となるが、ファンＦの回転数が低速制御され空調機１の
吹出給気量が絞られれば、外気調整用ダンパ１２の開度
が大となってその外気取入量が増大するので、被制御室
６−、〜６−ｎへの給気吹出量の減少に対しその含有外
気の割合が大となり、これにより被制御室６−１〜６−
７での外気の絶対量の不足が補われるものとなる。すな
わち、被制御室６−Ｉ〜６−７における外気の絶対量が
増加することにより、そのＣＯ□濃度の上昇の抑制や、
環境の悪化を改善することができるようになる。FIG. 1 is a characteristic diagram showing the opening degree of the damper 12 for adjusting outside air, which is controlled according to the rotation speed of the fan F. That is, as the rotation speed of the fan F increases, the opening degree of the outside air adjustment damper 12 is gradually decreased from the MAX value, and after reaching the predetermined rotation speed N1, the opening degree is reduced to the MIN value (30%). to be maintained. That is, the closer the room temperature of the controlled rooms 6-t to 6-7 is to the set temperature, the more the vAV units 8-t to 8-
The opening degree of the damper 7 is reduced, and accordingly the rotation speed of the fan F is controlled to a low speed, and the amount of air supplied to the air conditioner 1 is reduced. If the amount of air supplied to the controlled chambers 6-, 6-n is reduced, the degree of opening of the damper 12 for adjusting outside air becomes larger and the amount of outside air taken in increases. The proportion of outside air contained in the air decreases, and as a result, the controlled rooms 6-1 to 6-
This will compensate for the lack of absolute amount of outside air in 7. That is, by increasing the absolute amount of outside air in the controlled rooms 6-I to 6-7, it is possible to suppress the increase in the CO□ concentration,
It will be possible to improve the deterioration of the environment.
なお、この外気調整用ダンパ１２の開度制御は、実際に
は第３図に示すように、空調機１におけるファンＦの回
転数を一つのファクタとなし、ＣＯを濃度、外気冷房Ｐ
ＩＤ（エンタルピ演算）、最低外気量等のファクタを勘
案し、これによって定まる最大の開度値で制御するもの
とする。In addition, as shown in FIG. 3, the opening degree control of the outside air adjustment damper 12 is actually performed using the rotation speed of the fan F in the air conditioner 1 as one factor, and the concentration of CO and the outside air cooling P.
Factors such as ID (enthalpy calculation) and minimum amount of outside air are taken into consideration, and control is performed using the maximum opening value determined by these factors.
また、本実施例においては、ファンＦの回転数に基づき
空調機１の吹出給気量を知るものとしたが、給気ダクト
５に風量センサや圧力検出器を設けて吹出給気量を直接
知るものとしてもよく、空調機１の吹出給気量を知る方
法は他にも種々考えられる。すなわち、ファンＦの回転
数に限定されるものではない。Furthermore, in this embodiment, the amount of air supplied from the air conditioner 1 is known based on the rotation speed of the fan F, but an air volume sensor and a pressure detector are provided in the air supply duct 5 to directly measure the amount of air supplied. There are various other ways to know the amount of air supplied to the air conditioner 1. That is, it is not limited to the number of rotations of the fan F.
以上説明したように本発明によるＶＡＶ制御システムに
おける外気取入制御方法によると１．還気に対する外気
取入量をその空調機の吹出給気量に応じて制御するよう
にしたので、吹出給気量の減少に対し外気取入量を大と
するように制御すれば、被制御室への給気吹出量の減少
に対しその含有外気の割合を大として被制御室内におけ
る外気の絶対量の不足を補うことが可能となり、環境の
悪化を改善することができるようになる。As explained above, according to the outside air intake control method in the VAV control system according to the present invention, 1. Since the amount of outside air intake relative to the return air is controlled according to the amount of air supplied by the air conditioner, if the amount of outside air intake is increased in response to a decrease in the amount of air supplied, the controlled It becomes possible to compensate for the shortage of the absolute amount of outside air in the controlled room by increasing the proportion of outside air contained in the reduced amount of supplied air blown into the room, and it becomes possible to improve the deterioration of the environment.
第１図はファン回転数に応じた外気調整用ダンパの開度
状況を示す特性図、第２図は本発明に係る外気取入制御
方法の一実施例を適用してなるＶＡＶ制御システムの計
装図、第３図は外気調整用ダンパの開度制御の他のファ
クタとの関連を示す図である。
１・・・空調機、Ｆ・・・ファン、４・・・制御装置、
５・・・給気ダクト、６−３〜６−７・・被制御室、７
−１〜７−７・・・調節器、８−、〜８−７・・・ＶＡ
Ｖユニット、９・・・還気ダクト、１１・・・還気Ｑ用
ダンパ、１２・・・外気調整用ダンパ。FIG. 1 is a characteristic diagram showing the opening degree of the damper for adjusting outside air according to the fan rotation speed, and FIG. FIG. 3 is a diagram showing the relationship between the opening degree control of the outside air regulating damper and other factors. 1... Air conditioner, F... Fan, 4... Control device,
5... Air supply duct, 6-3 to 6-7... Controlled room, 7
-1 to 7-7...Adjuster, 8-, ~8-7...VA
V unit, 9...Return air duct, 11...Return air Q damper, 12...Outside air adjustment damper.
Claims (1)
ら給気の供給を受け被制御室の負荷状況に応じてそこへ
の給気吹出量を制御する可変給気量調節手段と、この可
変給気量調節手段による給気吹出量の制御状況に応じて
前記空調機の吹出給気量を制御する制御手段と、前記被
制御室からの排気の一部を還気として外気と合わせて前
記空調機へ戻す還気手段とを備えてなるＶＡＶ制御シス
テムにおいて、前記還気に対する前記外気の取り入れ量
を前記吹出給気量に応じて制御するようにしたことを特
徴とするＶＡＶ制御システムにおける外気取入制御方法
。an air conditioner having a function of varying the amount of air supplied; a variable air supply amount adjusting means that receives air supplied from the air conditioner and controls the amount of air blown to the controlled room according to the load condition of the controlled room; A control means for controlling the supply air amount of the air conditioner according to the control status of the supply air blowing amount by the variable supply air amount adjusting means, and a part of the exhaust air from the controlled room is combined with outside air as return air. and a return air means for returning air to the air conditioner, characterized in that the intake amount of the outside air with respect to the return air is controlled according to the blowout supply air amount. outside air intake control method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63179113A JPH0229533A (en) | 1988-07-20 | 1988-07-20 | Control method for outdoor air intake in vav control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63179113A JPH0229533A (en) | 1988-07-20 | 1988-07-20 | Control method for outdoor air intake in vav control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0229533A true JPH0229533A (en) | 1990-01-31 |
Family
ID=16060240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63179113A Pending JPH0229533A (en) | 1988-07-20 | 1988-07-20 | Control method for outdoor air intake in vav control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0229533A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02290454A (en) * | 1989-04-28 | 1990-11-30 | Mitsubishi Electric Corp | Air conditioner |
| JPH03191248A (en) * | 1989-12-20 | 1991-08-21 | Mitsubishi Electric Corp | Air-conditioner |
| JPH05157327A (en) * | 1991-06-11 | 1993-06-22 | Landis & Gyr Powers Inc | Cascade type control method and device for unit ventilator |
| JP2006292279A (en) * | 2005-04-11 | 2006-10-26 | Sanki Eng Co Ltd | Display device for air conditioning system |
| US9500684B1 (en) | 2013-08-19 | 2016-11-22 | Sensorlink Corporation | Line-mounted electrical energy measurement device with integrated voltage pickup and clamp |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63263345A (en) * | 1987-04-21 | 1988-10-31 | Matsushita Seiko Co Ltd | Air conditioner |
-
1988
- 1988-07-20 JP JP63179113A patent/JPH0229533A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63263345A (en) * | 1987-04-21 | 1988-10-31 | Matsushita Seiko Co Ltd | Air conditioner |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02290454A (en) * | 1989-04-28 | 1990-11-30 | Mitsubishi Electric Corp | Air conditioner |
| JPH03191248A (en) * | 1989-12-20 | 1991-08-21 | Mitsubishi Electric Corp | Air-conditioner |
| JPH05157327A (en) * | 1991-06-11 | 1993-06-22 | Landis & Gyr Powers Inc | Cascade type control method and device for unit ventilator |
| JP2006292279A (en) * | 2005-04-11 | 2006-10-26 | Sanki Eng Co Ltd | Display device for air conditioning system |
| JP4498196B2 (en) * | 2005-04-11 | 2010-07-07 | 三機工業株式会社 | Air conditioning system display |
| US9500684B1 (en) | 2013-08-19 | 2016-11-22 | Sensorlink Corporation | Line-mounted electrical energy measurement device with integrated voltage pickup and clamp |
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