JPH0346737B2 - - Google Patents
Info
- Publication number
- JPH0346737B2 JPH0346737B2 JP62129464A JP12946487A JPH0346737B2 JP H0346737 B2 JPH0346737 B2 JP H0346737B2 JP 62129464 A JP62129464 A JP 62129464A JP 12946487 A JP12946487 A JP 12946487A JP H0346737 B2 JPH0346737 B2 JP H0346737B2
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- air
- air conditioner
- temperature
- point
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 238000004378 air conditioning Methods 0.000 claims description 8
- 230000001143 conditioned effect Effects 0.000 claims description 6
- 238000007791 dehumidification Methods 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、空調システムにおける一次空調機の
制御方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method of controlling a primary air conditioner in an air conditioning system.
「従来の技術」
例えば半導体製造工場等、多量の外気の導入、
高精度の恒温、恒湿を要求される空調システムで
は、通常、一次、二次空調機により制御されてい
る。"Conventional technology" For example, in a semiconductor manufacturing factory, a large amount of outside air is introduced,
Air conditioning systems that require highly accurate constant temperature and humidity are usually controlled by primary and secondary air conditioners.
従来、一次、二次空調機による空調システム
は、第７図に示す如く、一次空調機１により外気
を濾過すると共に、一次空調機１の吹出し側にお
ける温度検出器２と湿度検出器３とによる温湿度
検出値に基づき、制御器４を介して一次空調機１
における図示していない冷温水バルブと、加湿バ
ルブおよび冷水バルブ（除湿モード）とを制御
し、一次空調機１の吹出し目標温湿度を一定にし
ている。 Conventionally, an air conditioning system using a primary air conditioner and a secondary air conditioner, as shown in FIG. Based on the detected temperature and humidity values, the primary air conditioner 1 is
A cold/hot water valve (not shown), a humidification valve, and a cold water valve (dehumidification mode) are controlled to keep the target temperature and humidity of the air from the primary air conditioner 1 constant.
そして前記一次空調機１の吹出し側の一定温湿
度の空気を、二次空調機５または二次空調機系の
再循環空気系５′へ供給すると共に、空調対象室
６の再循環空気を二次空調機５へ供給して、両空
気を二次空調機５にて混合し、かつこの二次空調
機５を、空調対象室６内（あるいは吹出しチヤン
バー内）における温度検出器７による温度検出値
に基づき、制御器８を介して自動制御し、二次空
調機５からの温度調整された空気を空調対象室６
内へ吹出すようにしている。 Then, the air at a constant temperature and humidity on the outlet side of the primary air conditioner 1 is supplied to the secondary air conditioner 5 or the recirculation air system 5' of the secondary air conditioner system, and the recirculation air of the air conditioned room 6 is The air is supplied to the secondary air conditioner 5, the two airs are mixed in the secondary air conditioner 5, and the temperature of the secondary air conditioner 5 is detected by the temperature detector 7 in the air conditioned room 6 (or inside the blowout chamber). Based on the value, the controller 8 automatically controls the temperature-adjusted air from the secondary air conditioner 5 to the air-conditioned room 6.
I try to blow it out inward.
「発明が解決しようとする問題点」
ところで、前記空調システムにおける従来の一
次空調機は、第８図の湿り空気線図に示す如く、
一次空調機の吹出し側目標温湿度点ｘが、通常、
例えば18℃、PH70％（あるいは20℃、RH60％）
の如く、一定となるよう通年制御されているの
で、一次空調機の入口側における外気の状態、す
なわち外気の温湿度状態が目標温湿度点ｘに比較
して、例えば高温・高湿または低温・高湿のゾー
ンＡの場合は、例えばa1点からa2点を経て、露点
温度Ｅの近傍のa3点まで、またはa2点からa3点ま
で冷却および除湿した後、目標温湿度点ｘまで再
加熱しており、従つてエネルギーの損失が大き
く、効率が極めて悪いという問題があつた。"Problems to be Solved by the Invention" By the way, the conventional primary air conditioner in the air conditioning system has the following problems as shown in the psychrometric diagram in FIG.
The target temperature and humidity point x on the outlet side of the primary air conditioner is usually
For example, 18℃, PH70% (or 20℃, RH60%)
As shown in FIG. In the case of high humidity zone A, for example, after cooling and dehumidifying from point A 1 to point A 2 to point A 3 near dew point temperature E, or from point A 2 to point A 3 , the target temperature and humidity point is There was a problem that the heat was reheated to x, and therefore the loss of energy was large and the efficiency was extremely low.
しかも第８図に示す如く、外気の温湿度状態
が、目標温湿度点ｘに比較して低温・低湿のゾー
ンＢの場合は、例えばｂ点から中温・低湿のゾー
ンＣのｃ点まで加熱した後、目標温湿度点ｘまで
加湿しており、年間冷房を要求する二次空調機系
で再度冷却してエネルギー損失を生じており、効
率が悪いという問題があつた。 Moreover, as shown in Fig. 8, when the temperature and humidity of the outside air is in zone B, which is low temperature and low humidity compared to the target temperature and humidity point x, heating is performed from point b to point c in zone C, which is medium temperature and low humidity. After that, the humidification was carried out to the target temperature and humidity point x, and the secondary air conditioner system, which requires annual cooling, was used to cool the room again, resulting in energy loss, resulting in poor efficiency.
なお、外気の温湿度状態が、目標温湿度点ｘに
比較して中温・低湿のゾーンＣの場合は、例えば
ｃ点から目標温湿度点ｘまで単に加湿すればよ
く、また外気の温湿度状態が、目標温湿度点Ｘに
比較して高温・低湿のゾーンＤの場合は、例えば
d1点から中温・低湿ゾーンＣのd2点まで冷却した
後、目標温湿度点ｘまで加湿すればよいので、エ
ネルギーの損失はそれ程問題にはならない。 Note that if the temperature and humidity state of the outside air is in zone C, which is medium temperature and low humidity compared to the target temperature and humidity point x, it is sufficient to simply humidify from point c to the target temperature and humidity point x, and However, in the case of zone D with high temperature and low humidity compared to the target temperature and humidity point X, for example,
After cooling from point d1 to point d2 in medium temperature/low humidity zone C, it is sufficient to humidify to the target temperature/humidity point x, so energy loss is not so much of a problem.
「問題点を解決するための手段」
本発明は、前記空調システムにおける一次空調
機制御の問題点を解決すべくなしたものであつ
て、その要旨とするところは、一次空調機により
所要の温湿度に調整し、この調整された空気と、
空調対象室の再循環空気とを二次空調機系にて混
合し、かつこの二次空調機を空調対象室の負荷に
応じて自動制御し、二次空調機からの温湿度等を
調整された空気を空調対象室内へ吹出すようにし
た空調システムにおいて、少なくとも前記一次空
調機の吹出し空気の目標絶対湿度を設定し、外気
の温湿度状態に応じて、該吹出し空気の目標絶対
湿度まで加湿または除湿制御し、かつ前記一次空
調機での温度制御は、装置の結露を防止するため
の最低限の加熱または有効に加湿するための最低
限の加熱にとどめたことを特徴とする一次空調機
の制御方法にある。"Means for Solving the Problems" The present invention has been made to solve the problems of controlling the primary air conditioner in the air conditioning system, and its gist is to control the required temperature by the primary air conditioner. Adjust the humidity, and with this conditioned air,
The recirculated air from the room to be air-conditioned is mixed in the secondary air conditioner system, and this secondary air conditioner is automatically controlled according to the load of the room to be air-conditioned, and the temperature and humidity etc. from the secondary air conditioner are adjusted. In an air conditioning system that blows out air into a room to be air-conditioned, a target absolute humidity of at least the air blown from the primary air conditioner is set, and the blown air is humidified to the target absolute humidity according to the temperature and humidity state of the outside air. or a primary air conditioner that performs dehumidification control, and that temperature control in the primary air conditioner is limited to minimum heating to prevent condensation on the device or minimum heating to effectively humidify. It is in the control method.
「作用」
本発明の一次空調機の制御方法は、第１図に示
す如く、一次空調機の入口側の外気状態、すなわ
ち外気の温湿度状態に応じて一次空調機の吹出し
上限目標温湿度点x1（例えば18℃、RH70％ある
いは20℃、RH60％）と、露点温度Ｅとの間にそ
れぞれ中間目標温湿度点x2および下限目標温湿度
点x3を設定し、冷却コイルを使用する除湿機構を
持つ空調機においては、外気の温湿度状態が、目
標温湿度点よりも絶対湿度が上まわるＡゾーンに
ある場合には、例えばa1点からa2点を経て露点温
度Ｅの近傍のa3点まで冷却、除湿した後、下限目
標温湿度点x3まで再加熱する（下限目標温湿度点
x3の値は、空調対象室の負荷状態や搬送ダクトに
おいて再結露しないことを考慮した温度である）。"Function" As shown in FIG. 1, the primary air conditioner control method of the present invention is based on the outside air condition on the inlet side of the primary air conditioner, that is, the temperature and humidity condition of the outside air. x 1 (for example, 18℃, RH 70% or 20℃, RH 60%) and the dew point temperature E, set intermediate target temperature and humidity points x 2 and lower limit target temperature and humidity points x 3 , respectively, and use a cooling coil. In an air conditioner with a dehumidification mechanism, when the temperature and humidity of the outside air is in zone A where the absolute humidity is higher than the target temperature and humidity point, for example, from point a1 to point a2 , the temperature is near the dew point temperature E. After cooling and dehumidifying up to 3 points, reheat to the lower limit target temperature and humidity point x 3 (lower limit target temperature and humidity point
The value of x 3 is a temperature that takes into account the load condition of the air-conditioned room and the prevention of re-condensation in the transport duct).
また外気の温湿度状態が、加湿機とその制御系
の精度で決定される中間目標温湿度点x2および加
湿機およびその供給蒸気圧力できまる勾配により
x2点を目標として分離されるＢゾーンのときは、
例えばb1点からb2点まで加熱した後、中間目標温
湿度点x2まで加湿する（前記b1点からb2点までの
加熱量は、有効に加湿できる最低限の加熱量であ
る）。 In addition, the temperature and humidity state of the outside air is determined by two intermediate target temperature and humidity points determined by the accuracy of the humidifier and its control system, and by the gradient determined by the humidifier and its supply steam pressure.
x When in zone B, which is separated with 2 points as the target,
For example, after heating from point b 1 to point b 2 , humidify until the intermediate target temperature and humidity point x 2 (the amount of heating from point b 1 to point b 2 mentioned above is the minimum amount of heating that can effectively humidify) .
さらに外気の温湿度状態がＣゾーンのときは、
例えばc1点から中間目標温湿度点x2と上限目標温
湿度点x1との中間点c2まで加湿する。 Furthermore, when the temperature and humidity of the outside air is in zone C,
For example, humidification is performed from point c1 to midpoint c2 between the intermediate target temperature and humidity point x2 and the upper limit target temperature and humidity point x1 .
またさらに外気の温湿度状態がＤゾーンのとき
は、例えばd1点からd2点まで冷却した後、上限目
標温湿度点x1まで加湿する（前記d1点からd2点ま
での冷却は、一次空調機にて負担した事例である
が、二次空調機にて負担してもよく、必ずしも一
次空調機の機能としては必須ではない）。 Furthermore, when the temperature and humidity state of the outside air is in zone D, for example, after cooling from point d 1 to point d 2 , humidification is performed to the upper limit target temperature and humidity point x 1 (cooling from point d 1 to point d 2 is Although this is an example in which the burden was borne by the primary air conditioner, the burden may be borne by the secondary air conditioner, and is not necessarily required as a function of the primary air conditioner).
「実施例」
次に本発明方法の実施例を第２図に基づき以下
に説明する。"Example" Next, an example of the method of the present invention will be described below based on FIG.
第２図に示す如く、一次空調機１の入口側の外
気の温度と湿度を、温度検出器９と湿度検出器１
０によつて検出し、この外気の温湿度検出値に応
じて、第１図における一次空調機１の吹出し上限
目標温湿度点x1と、中間目標温湿度点x2と、下限
目標温湿度点x3の各設定値を、二次空調機系の目
標温湿度により設定し、演算制御器１１によつて
外気温湿度からx1〜x3の間の外気状態に応じた目
標温湿度を演算し、この演算制御器１１からの各
演算値に基づくそれぞれの制御信号により、第３
図乃至第６図のフローシートの如く一次空調機１
を自動制御するのである。 As shown in FIG.
0, and according to the temperature and humidity detected value of the outside air, the air outlet upper limit target temperature and humidity point x 1 of the primary air conditioner 1, the intermediate target temperature and humidity point x 2 , and the lower limit target temperature and humidity point of the primary air conditioner 1 in FIG. Each set value at point x 3 is set based on the target temperature and humidity of the secondary air conditioner system, and the arithmetic controller 11 determines the target temperature and humidity according to the outside air condition between x 1 and x 3 from the outside temperature and humidity. The third
Primary air conditioner 1 as shown in the flow sheets in Figures to Figures 6
is automatically controlled.
なお、第１図中、Ｋは、空調対象室内の設定湿
度によつて決まる絶対湿度、αは不感帯設定値で
あり、また第４図乃至第６図中、PI式は比例積
分制御方式、PID式は比例積分微分制御方式であ
る。 In Figure 1, K is the absolute humidity determined by the set humidity in the air-conditioned room, α is the dead zone setting value, and in Figures 4 to 6, the PI formula is the proportional-integral control method, PID The formula is a proportional-integral-derivative control method.
「発明の効果」
以上述べた如く、本発明は、一次空調機により
所要の温湿度に調整し、この調整された空気と、
空調対象室の再循環空気とを二次空調機系にて混
合し、かつこの二次空調機を空調対象室の負荷に
応じて自動制御し、二次空調機からの温湿度等を
調整された空気を空調対象室内へ吹出すようにし
た空調システムにおいて、少なくとも前記一次空
調機の吹出し空気の目標絶対湿度を設定し、外気
の温湿度状態に応じて、該吹出し空気の目標絶対
湿度まで加湿または除湿制御し、かつ前記一次空
調機での温度制御は、装置の結露を防止するため
の最低限の加熱または有効に加湿するための最低
限の加熱にとどめたので、エネルギーの損失を、
従来の制御に比較して極めて小さくすることがで
きると共に、特に外気状態が中温・低湿のゾーン
の場合における一次空調機の加熱および加湿の二
動作を一動作にて済ませ得られ、従つて制御がシ
ンプルとなると共に、湿度管理を厳密にすること
ができるので、制御精度を向上させることができ
る。"Effects of the Invention" As described above, the present invention adjusts the temperature and humidity to the required level using a primary air conditioner, and uses the adjusted air to
The recirculated air of the room to be air conditioned is mixed with the recirculated air in the secondary air conditioner system, and this secondary air conditioner is automatically controlled according to the load of the room to be air conditioned, and the temperature and humidity etc. from the secondary air conditioner are adjusted. In an air conditioning system that blows out air into a room to be air-conditioned, a target absolute humidity of at least the air blown from the primary air conditioner is set, and the blown air is humidified to the target absolute humidity according to the temperature and humidity state of the outside air. Alternatively, dehumidification is controlled, and the temperature control in the primary air conditioner is kept to the minimum heating to prevent condensation on the device or to the minimum heating to effectively humidify, reducing energy loss.
In addition to being extremely small compared to conventional control, it is also possible to perform the two operations of heating and humidifying the primary air conditioner in one operation, especially when the outside air condition is in a zone with medium temperature and low humidity. Since it is simple and allows strict humidity control, control accuracy can be improved.
また従来の固定目標温湿度制御方式の如く、冷
却、除湿後、再加熱し、かつ二次空調機での再冷
却のようなエネルギー浪費の二重動作を防止で
き、省エネルギー運転が可能となる。 In addition, it is possible to prevent energy-wasting double operations such as reheating after cooling and dehumidification and recooling in a secondary air conditioner, as in the conventional fixed target temperature/humidity control system, thereby enabling energy-saving operation.
第１図は本発明方法による湿り空気線図、第２
図は本発明方法のブロツク図、第３図乃至第６図
は本発明方法のフローシート、第７図は従来方法
のブロツク図、第８図は従来方法による湿り空気
線図である。
１……一次空調機、９……一次空調機入口側の
外気温度検出器、１０……一次空調機入口側の外
気湿度検出器、１１……演算制御器。
Figure 1 is a psychrometric diagram obtained by the method of the present invention;
The figure is a block diagram of the method of the present invention, FIGS. 3 to 6 are flow sheets of the method of the present invention, FIG. 7 is a block diagram of the conventional method, and FIG. 8 is a psychrometric diagram of the conventional method. 1...Primary air conditioner, 9...Outside air temperature detector on the inlet side of the primary air conditioner, 10...Outside air humidity detector on the inlet side of the primary air conditioner, 11...Arithmetic controller.
Claims (1)
の調整された空気と、空調対象室の再循環空気と
を二次空調機系にて混合し、かつこの二次空調機
を空調対象室の負荷に応じて自動制御し、二次空
調機からの温湿度等を調整された空気を空調対象
室内へ吹出すようにした空調システムにおいて、
少なくとも前記一次空調機の吹出し空気の目標絶
対湿度を設定し、外気の温湿度状態に応じて、該
吹出し空気の目標絶対湿度まで加湿または除湿制
御し、かつ前記一次空調機での加熱制御は、装置
の結露を防止するための最低限の加熱または有効
に加湿するための最低限の加熱にとどめたことを
特徴とする一次空調機の制御方法。1 Adjust the temperature and humidity to the required temperature using the primary air conditioner, mix this adjusted air with recirculated air from the room to be air conditioned in the secondary air conditioner system, and use this secondary air conditioner to In an air conditioning system that automatically controls according to the load and blows air whose temperature and humidity have been adjusted from a secondary air conditioner into the room to be air-conditioned,
At least a target absolute humidity of the air blown from the primary air conditioner is set, and humidification or dehumidification is controlled to the target absolute humidity of the blown air according to the temperature and humidity state of the outside air, and heating control in the primary air conditioner is performed. A method for controlling a primary air conditioner, characterized in that heating is kept to a minimum level to prevent dew condensation in the device or to effectively humidify the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129464A JPS63294445A (en) | 1987-05-26 | 1987-05-26 | Method of controlling primary air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129464A JPS63294445A (en) | 1987-05-26 | 1987-05-26 | Method of controlling primary air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63294445A JPS63294445A (en) | 1988-12-01 |
| JPH0346737B2 true JPH0346737B2 (en) | 1991-07-17 |
Family
ID=15010140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62129464A Granted JPS63294445A (en) | 1987-05-26 | 1987-05-26 | Method of controlling primary air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63294445A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2649986B2 (en) * | 1990-11-05 | 1997-09-03 | 高砂熱学工業株式会社 | Clean room using a direct expansion type heat exchanger |
| JP2000310440A (en) * | 1999-04-26 | 2000-11-07 | Yamatake Corp | Air conditioning control method |
| JP3805957B2 (en) * | 2000-08-04 | 2006-08-09 | 株式会社山武 | Temperature control method and temperature / humidity or temperature control device |
| US6898943B2 (en) | 2001-08-06 | 2005-05-31 | Yamatake Corporation | Method of controlling temperature/humidity or temperature and device for controlling temperature/humidity or temperature |
| JP5430888B2 (en) * | 2007-07-09 | 2014-03-05 | 株式会社Ｎｔｔファシリティーズ | Air conditioning system and operation method thereof |
| JP5127758B2 (en) * | 2009-03-27 | 2013-01-23 | エスペック株式会社 | Environmental control method and constant temperature and humidity device |
| JP5786773B2 (en) * | 2012-03-16 | 2015-09-30 | ダイキン工業株式会社 | Humidity control device |
| CN104962304B (en) * | 2015-05-26 | 2017-11-07 | 武汉钢铁有限公司 | The determination method of drying terminal in coking coal pretreating process |
| CN109341017B (en) * | 2018-10-31 | 2021-04-09 | 奥克斯空调股份有限公司 | Air conditioner outdoor unit humidity detection protection method and device and air conditioner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57120042A (en) * | 1981-01-20 | 1982-07-26 | Toshiba Corp | Method of controlling air conditioner |
-
1987
- 1987-05-26 JP JP62129464A patent/JPS63294445A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57120042A (en) * | 1981-01-20 | 1982-07-26 | Toshiba Corp | Method of controlling air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63294445A (en) | 1988-12-01 |
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