JPH11173631A - Air conditioner controller - Google Patents
Air conditioner controllerInfo
- Publication number
- JPH11173631A JPH11173631A JP9344693A JP34469397A JPH11173631A JP H11173631 A JPH11173631 A JP H11173631A JP 9344693 A JP9344693 A JP 9344693A JP 34469397 A JP34469397 A JP 34469397A JP H11173631 A JPH11173631 A JP H11173631A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- air temperature
- hot water
- return air
- supply
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000010586 diagram Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、蓄熱槽等から供給
される冷温水を熱源に用いた空調機の制御装置に関し、
特に、負荷の変動に対して素早く応答するとともに、冷
房と暖房を適切なタイミングで自動的に切り替えること
を可能にした空調機制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner using cold and hot water supplied from a heat storage tank or the like as a heat source.
In particular, the present invention relates to an air conditioner control device capable of quickly responding to load fluctuations and automatically switching between cooling and heating at appropriate timing.
【０００２】[0002]
【発明が解決しようとする課題】従来、冷温水を熱源に
した空調機の場合、測定した還気の温度と室温の設定値
とを比較し、ＰＩＤ制御等により冷温水の流量を調整す
る弁を開閉駆動していた。そのため、負荷の変動に対す
る追随性の点で不充分な場合があった。また、従来の空
調機では、冷房と暖房の切り替えを手動により設定して
いるため、実際の状況にそぐわずに不適切なタイミング
で切り替えられる場合があった。Conventionally, in the case of an air conditioner using cold and hot water as a heat source, a valve for adjusting the flow rate of cold and hot water by PID control or the like by comparing the measured return air temperature with a set value of room temperature. Was driven to open and close. For this reason, there is a case where the followability to the fluctuation of the load is insufficient. Further, in the conventional air conditioner, switching between cooling and heating is manually set, so that switching may be performed at an inappropriate timing without conforming to an actual situation.
【０００３】[0003]
【課題を解決するための手段】そこで上記課題を解決す
るために、請求項１の発明は、冷房または暖房の運転モ
ードに応じて冷水または温水が供給される冷温水コイル
に室内空気を強制循環させるとともに、冷温水コイルへ
の冷温水流量を流量調整弁の弁開度により調整する空調
機の制御装置であって、冷温水コイルに吸入される還気
の温度を測定する温度測定器と、冷温水コイルから吐出
された給気の温度を測定する温度測定器と、測定された
還気温度と予め入力されている室内設定温度とにもとづ
いて給気温度の設定値を算出する給気温度設定値演算部
と、設定されている冷房または暖房の運転モードに応じ
て、測定された給気温度と給気温度設定値演算部で算出
された給気温度設定値とを用いて流量調整弁にＰＩ動作
をさせるための弁駆動量を算出するＰＩ動作量演算部と
を備えたことを特徴とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a first aspect of the present invention is to forcibly circulate indoor air through a cold / hot water coil to which cold or hot water is supplied in accordance with a cooling or heating operation mode. A control device for an air conditioner that adjusts the flow rate of the chilled and heated water to the chilled and heated water coil by the valve opening of the flow control valve, and a temperature measuring device that measures the temperature of the return air drawn into the chilled and heated water coil; A temperature measuring device that measures the temperature of the supply air discharged from the chilled / hot water coil, and an intake air temperature that calculates a set value of the supply air temperature based on the measured return air temperature and a previously set indoor set temperature. A flow control valve using a set value calculation unit and the supply air temperature measured according to the set cooling or heating operation mode and the supply air temperature set value calculated by the supply air temperature set value calculation unit. For making the PI operate Characterized in that a PI operation amount calculation unit for calculating a momentum.
【０００４】請求項２の発明は、請求項１の発明におい
て、運転開始時に還気温度と室内設定温度とを比較し、
室内設定温度よりも還気温度が低い場合に暖房モードと
し、そうでない場合に冷房モードとしてモード設定をす
る手段と、暖房モード運転中に、還気温度と室内設定温
度とを比較し、還気温度が室内設定温度よりも高くなり
かつ還気温度と室内設定温度の差が予め設定されている
不感帯の温度幅の半分の値を越えた場合に冷房モード運
転に切り替える手段と、冷房モード運転中に、還気温度
と室内設定温度とを比較し、還気温度が室内設定温度よ
りも低くなりかつ室内設定温度と還気温度の差が予め設
定されている不感帯の温度幅の半分の値を越えた場合に
暖房モード運転に切り替える手段とを備えたことを特徴
とする。According to a second aspect of the present invention, in the first aspect of the present invention, the return air temperature and the indoor set temperature are compared at the start of operation,
A means for setting the heating mode when the return air temperature is lower than the indoor set temperature, and a mode setting for the cooling mode otherwise, and comparing the return air temperature with the indoor set temperature during the heating mode operation, Means for switching to the cooling mode operation when the temperature becomes higher than the indoor set temperature and the difference between the return air temperature and the indoor set temperature exceeds a half of the preset dead zone temperature width, and during the cooling mode operation The return air temperature and the indoor set temperature are compared, and the return air temperature is lower than the indoor set temperature, and the difference between the indoor set temperature and the return air temperature is set to a value that is half the temperature width of the preset dead zone. Means for switching to the heating mode operation when exceeding.
【０００５】なお、請求項１または請求項２の発明にお
いて、給気温度設定値をＳＰ(゜C)、室内温度設定値を
ＳＰ0(゜C)、還気温度をＰＶ(゜C)、補正値をα(゜Cde
g.)として、ＰＩ動作量演算部の算出する給気温度設定
値を次式、 ＳＰ＝２×ＳＰ0−ＰＶ＋α により算出し、式中の補正値αを冷房モード運転時には
−４゜Cdeg.とし、暖房モード運転時には４゜Cdeg.とす
ることができる。In the invention of claim 1 or claim 2, the set value of the supply air temperature is SP (ＳＰC), the set value of the room temperature is SP 0 (゜ C), the return air temperature is PV (゜ C), Correction value is α (゜ Cde
g.), the supply air temperature set value calculated by the PI operation amount calculation unit is calculated by the following equation: SP = 2 × SP 0 −PV + α, and the correction value α in the equation is −4 ° C. ° during the cooling mode operation. In the heating mode operation, the temperature can be set to 4 ° Cdeg.
【０００６】[0006]
【発明の実施の形態】以下、図に沿って本発明の実施形
態を説明する。図１は本発明が適用される空調機および
その制御装置の概略構成を示す系統図である。図におい
て、１は給気および還気を強制循環させるためのファン
であり、ファン１の吸入側には冷温水コイル２が設置さ
れている。冷温水コイル２には、図示しない蓄熱槽等の
熱源から、冷房モードの場合は冷水が、暖房モードの場
合は温水が供給され、その冷温水の配管の途中に冷温水
弁ＭＶ１が接続されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram showing a schematic configuration of an air conditioner to which the present invention is applied and a control device thereof. In the drawing, reference numeral 1 denotes a fan for forcibly circulating supply air and return air, and a cooling / heating water coil 2 is provided on the suction side of the fan 1. The cold / hot water coil 2 is supplied with cold water in the cooling mode and hot water in the heating mode from a heat source such as a heat storage tank (not shown). The cold / hot water valve MV1 is connected in the middle of the pipe of the cold / hot water. I have.
【０００７】また、冷温水コイル２の吸入側には、還気
の温度を測定するための温度測定器３が取り付けられて
おり、測定された還気温度ＰＶ(゜C)は、給気温度設定
値演算部５へ送られる。同じく、ファン１の吐出側に
は、給気の温度を測定するための温度測定器４が取り付
けられており、測定された給気温度は、ＰＩ演算部６へ
送られる。[0007] A temperature measuring device 3 for measuring the temperature of the return air is attached to the suction side of the cold / hot water coil 2, and the measured return air temperature PV (、 C) is the supply air temperature. It is sent to the set value calculation unit 5. Similarly, a temperature measuring device 4 for measuring the temperature of the supply air is attached to the discharge side of the fan 1, and the measured supply air temperature is sent to the PI calculation unit 6.
【０００８】これらの構成において、冷房モードまたは
暖房モードのいずれかが、演算部５，６へ入力されて運
転モードの設定がなされるとともに、演算部５へ室内設
定温度ＳＰ0(゜C)が入力されて設定される。ここで、演
算部５は、設定された運転モードおよび室内設定温度Ｓ
Ｐ0と入力された還気温度測定値ＰＶとにもとづいて、
給気温度設定値ＳＰ(゜C)を算出して、ＰＩ演算部６へ
送る。ＰＩ演算部６は、設定された運転モードおよび入
力された給気温度設定値ＳＰと給気温度測定値とにもと
づいて、冷温水弁ＭＶ１の流量をＰＩ動作により制御す
るための弁開度の駆動量を算出し、駆動信号として冷温
水弁ＭＶ１へ送る。冷温水弁ＭＶ１は、入力された駆動
信号にもとづく弁開度に開閉駆動される。In these configurations, either the cooling mode or the heating mode is input to the operation units 5 and 6 to set the operation mode, and the operation unit 5 receives the indoor set temperature SP 0 (゜ C). Entered and set. Here, the calculation unit 5 determines the set operation mode and the indoor set temperature S
Based on P 0 and the input return air temperature measurement value PV,
The supply air temperature set value SP (゜ C) is calculated and sent to the PI calculation unit 6. Based on the set operation mode and the input air supply temperature set value SP and the air supply temperature measurement value, the PI calculation unit 6 determines the valve opening degree for controlling the flow rate of the cold / hot water valve MV1 by the PI operation. The drive amount is calculated and sent to the cold / hot water valve MV1 as a drive signal. The cold / hot water valve MV1 is driven to open and close at a valve opening based on the input drive signal.
【０００９】次に、給気温度設定値演算部５における演
算について説明する。まず、冷房モード時には、次式に
より給気温度設定値ＳＰ(゜C)を算出する。Next, the calculation in the supply air temperature setting value calculation section 5 will be described. First, in the cooling mode, the supply air temperature set value SP (゜ C) is calculated by the following equation.
【００１０】[0010]
【数１】ＳＰ＝２×ＳＰ0−ＰＶ−αC ## EQU1 ## SP = 2 × SP 0 −PV−α C
【００１１】ここで、αCは補正値であり、実験の結果
から４゜Cdeg.が最適な値である。なお、この演算で
は、給気設定温度ＳＰの最小値を１５゜Cとしておき、
演算の結果が最小値よりも小さい場合、すなわちＳＰ≦
１５゜Cの場合は、最小値１５゜CをＳＰとして出力す
る。また、演算の結果が還気温度ＰＶよりも大きい場
合、すなわちＳＰ＞ＰＶのときは、次式により、給気温
度設定値ＳＰ(゜C)を算出する。Here, α C is a correction value, and 4 ° Cdeg. Is an optimum value from the results of experiments. In this calculation, the minimum value of the supply air set temperature SP is set to 15 ° C.
When the result of the operation is smaller than the minimum value, that is, SP ≦
In the case of 15 ° C, the minimum value 15 ° C is output as SP. When the result of the calculation is higher than the return air temperature PV, that is, when SP> PV, the supply air temperature set value SP (゜ C) is calculated by the following equation.
【００１２】[0012]
【数２】ＳＰ＝ＳＰ0−αC／２## EQU2 ## SP = SP 0 −α C / 2
【００１３】次に、暖房モード時には、次式により、給
気温度設定値ＳＰ(゜C)を算出する。Next, in the heating mode, the supply air temperature set value SP (゜ C) is calculated by the following equation.
【００１４】[0014]
【数３】ＳＰ＝２×ＳＰ0−ＰＶ＋αH ## EQU3 ## SP = 2 × SP 0 −PV + α H
【００１５】ここで、αHは補正値であり、実験の結果
から４゜Cdeg.が最適な値である。なお、この演算で
は、給気設定温度ＳＰの最大値を４０゜Cとしておき、
演算の結果が最大値よりも大きい場合、すなわち、ＳＰ
≧４０゜Cの場合は、最大値４０゜CをＳＰとして出力す
る。また、演算の結果が還気温度ＰＶよりも小さい場
合、すなわち、ＳＰ＜ＰＶのときは、次式により、給気
温度設定値ＳＰ(゜C)を算出する。Here, α H is a correction value, and 4 ° Cdeg. Is an optimum value from the results of experiments. In this calculation, the maximum value of the supply air set temperature SP is set to 40 ° C.
When the result of the operation is larger than the maximum value, that is, SP
If ≧ 40 ° C., the maximum value 40 ° C. is output as SP. When the result of the calculation is lower than the return air temperature PV, that is, when SP <PV, the supply air temperature set value SP (゜ C) is calculated by the following equation.
【００１６】[0016]
【数４】ＳＰ＝ＳＰ0+αH／２## EQU4 ## SP = SP 0 + α H / 2
【００１７】なお、上記各式における、ＳＰ，ＳＰ0，
ＰＶの値は、０．５゜C刻みとし、小数点以下の端数値
は、例えばＰＶの場合、それぞれ、ＰＶ≦０．２５→
０．０、０．２５＜ＰＶ≦０．７５→０．５、０．７５
＜ＰＶ→１とする。また、上述した、給気設定温度ＳＰ
の最小値および最大値、補正値αC、αHの値は、上述し
た値に限定されるものではなく、空調機の規模、負荷の
大小その他の現場の状況に応じて適宜変更可能な値であ
る。Note that SP, SP 0 ,
The value of PV is in increments of 0.5 ° C, and fractional values after the decimal point are, for example, in the case of PV, PV ≦ 0.25 →
0.0, 0.25 <PV ≦ 0.75 → 0.5, 0.75
<PV → 1. Further, the above-described air supply set temperature SP
The minimum and maximum values of the correction values α C and α H are not limited to the above-mentioned values, but may be appropriately changed according to the scale of the air conditioner, the size of the load, and other site conditions. It is.
【００１８】次に、ＰＩ演算部６における演算について
説明する。ここでは、弁の今回の出力開度をＹn（％)と
し、比例動作出力をＰ（％)、積分動作出力をＩ（％)と
すると、弁の出力開度Ｙnは次式のようになる。Next, the operation in the PI operation unit 6 will be described. Here, assuming that the current output opening of the valve is Y n (%), the proportional operation output is P (%), and the integral operation output is I (%), the output opening Y n of the valve is represented by the following equation. become.
【００１９】[0019]
【数５】Ｙn＝Ｐ＋Ｉ## EQU5 ## Y n = P + I
【００２０】ここで、Ｙn（％)の求められる範囲は、−
１００％≦Ｙn≦１００％である。また、比例動作出力
Ｐの項は次式のようになる。Here, the required range of Y n (%) is −
100% ≦ Y n ≦ 100%. Also, the term of the proportional operation output P is as follows.
【００２１】[0021]
【数６】Ｐ＝Ｋc×（ｅn−ｅn-1)[6] P = K c × (e n -e n-1)
【００２２】ここで、Ｋcはコントロ−ルゲインであ
り、ｅnは今回の偏差、ｅn-1は前回の偏差である。な
お、ＰＩ制御開始時の最初の演算では、ｅn-1＝０とす
る。また、積分動作出力Ｉの項は次式のようになる。[0022] Here, the K c control - a Rugein, e n is present deviation, e n-1 is the previous deviation. In the first calculation at the time of starting the PI control, it is assumed that en -1 = 0. The term of the integral operation output I is as follows.
【００２３】[0023]
【数７】Ｉ＝Ｋc×（△ｔ／ＴＩ)×ｅn Equation 7] I = K c × (△ t / TI) × e n
【００２４】ここで、△ｔは時間変化量（ｓ)すなわち
ＰＩ制御時間である。また、ＴＩは積分時間（ｓ)であ
る。Here, Δt is a time variation (s), that is, a PI control time. TI is the integration time (s).
【００２５】次に、ＰＩ演算部６により求められた弁の
今回の出力開度をＹn（％)から、弁の開閉時間を算出す
る場合について説明する。開閉時間ｔは、弁開度Ｙnか
ら次式のように求められる。Next, a case will be described in which the opening / closing time of the valve is calculated from the current output opening degree of the valve obtained by the PI calculation section 6 from Y n (%). Closing time t is determined from the valve opening degree Y n as shown in the following equation.
【００２６】[0026]
【数８】ｔ＝（Ｙn×Ｔ)／１００## EQU8 ## t = (Y n × T) / 100
【００２７】ここで、Ｔは冷温水弁ＭＶ１の開閉に要す
る時間（ｓ)であり、得られた開閉時間ｔの値により、
冷温水弁ＭＶ１の駆動は次のように行われる。まず、ｔ
＜−１のとき、ｔ秒間閉出力する。また、ｔ＞＋１のと
き、ｔ秒間開出力する。さらに、｜ｔ｜≦１のときは、
開閉出力無しとする。本発明は、上述したように、給気
温度設定値演算部５とＰＩ演算部６とを２段に接続し
た、いわゆるカスケード制御としたことで、出力側に遅
れやむだ時間があっても、それら遅れやむだ時間を最小
限にすることが可能となり、負荷の変動に対する応答性
が改善される。Here, T is the time (s) required for opening and closing the cold / hot water valve MV1, and according to the obtained value of the opening / closing time t,
Driving of the cold / hot water valve MV1 is performed as follows. First, t
When <-1, the output is closed for t seconds. When t> +1, the output is opened for t seconds. Further, when | t | ≦ 1,
No open / close output. As described above, the present invention employs a so-called cascade control in which the supply air temperature setting value calculation unit 5 and the PI calculation unit 6 are connected in two stages, so that even if there is a delay or dead time on the output side, The delay and the dead time can be minimized, and the responsiveness to a load change is improved.
【００２８】次に、請求項２の発明の運転モードの自動
設定について説明する。図２は、その自動判断の手順を
示す説明図である。ここでは、室内設定温度と還気温度
から、冷暖房モード判断を自動で行う。最初の運転の開
始時に、室内設定温度ＳＰ0(゜C)と還気温度ＰＶ(゜C)
を比較し、ＳＰ0＞ＰＶの場合、暖房モードの設定をす
る。反対に、ＳＰ0≦ＰＶの場合、冷房モードの設定を
する。Next, the automatic setting of the operation mode according to the second aspect of the invention will be described. FIG. 2 is an explanatory diagram showing the procedure of the automatic judgment. Here, the cooling / heating mode determination is automatically performed based on the indoor set temperature and the return air temperature. At the start of the first operation, the indoor set temperature SP 0 (゜ C) and the return air temperature PV (゜ C)
And if SP 0 > PV, the heating mode is set. Conversely, if SP 0 ≦ PV, the cooling mode is set.
【００２９】次に、冷房モードが設定されて運転が開始
された後には、室内設定温度ＳＰ0を中心にした不感帯
ｎｆを予め設定しておき、還気温度ＰＶと室内設定温度
ＳＰ 0とを比較する。ここで、還気温度ＰＶが次式を満
たす場合は、暖房モード運転に切り替える。Next, the cooling mode is set and the operation starts.
After that, the room set temperature SP0Dead zone centered on
nf is set in advance, and the return air temperature PV and the indoor set temperature
SP 0Compare with Here, the return air temperature PV satisfies the following equation.
If so, switch to heating mode operation.
【００３０】[0030]
【数９】ＳＰ0−ＰＶ＞ｎｆ／２## EQU9 ## SP 0 -PV> nf / 2
【００３１】また、暖房モードが設定された運転中に
も、同様に還気温度ＰＶと室内設定温度ＳＰ0とを比較
する。ここで、還気温度ＰＶが次式を満たす場合は、冷
房モード運転に切り替える。Also, during the operation in which the heating mode is set, the return air temperature PV and the indoor set temperature SP 0 are similarly compared. Here, when the return air temperature PV satisfies the following equation, the operation is switched to the cooling mode operation.
【００３２】[0032]
【数１０】ＳＰ0−ＰＶ＜−ｎｆ／２## EQU10 ## SP 0 -PV <-nf / 2
【００３３】なお、図２では、不感帯ｎｆを２゜Cdeg.
と設定した場合のモード切り替えを示している。上述し
た運転モードの設定を図１に示した制御装置に組み込ん
でおくことでモード設定が自動化され、操作員が、季節
や天候に応じてモード設定をする煩わしさから解放され
るとともに、誤ったモードの設定がなされることも解消
される。In FIG. 2, the dead zone nf is 2 ° Cdeg.
Mode switching when the setting is made. By incorporating the above-described operation mode setting into the control device shown in FIG. 1, the mode setting is automated, and the operator is relieved from the trouble of setting the mode according to the season and the weather, and is erroneously set. Mode setting is also eliminated.
【００３４】[0034]
【発明の効果】以上述べたように請求項１の発明によれ
ば、給気温度設定値が、予め入力されている室内設定温
度と測定した還気温度にもとづいて算出され、さらに、
その給気温度設定値を用いたＰＩ動作により冷温水の流
量調整用弁が開閉制御されることにより、負荷の変動に
対する追随性が向上する。As described above, according to the first aspect of the present invention, the set value of the supply air temperature is calculated based on the preset room temperature and the measured return air temperature.
The opening / closing control of the flow rate adjusting valve for the cold / hot water is performed by the PI operation using the supply air temperature setting value, so that the followability to the fluctuation of the load is improved.
【００３５】請求項２の発明によれば、冷房または暖房
の運転モードが、還気温度と室内設定温度とを比較して
自動的に設定されるため、手動による設定操作が不要に
なるとともに、モード設定の誤りが防止される。According to the second aspect of the present invention, since the cooling or heating operation mode is automatically set by comparing the return air temperature and the indoor set temperature, manual setting operation is not required, and Mode setting errors are prevented.
【図１】本発明が適用される空調機の制御装置の概略構
成を示す系統図である。FIG. 1 is a system diagram showing a schematic configuration of a control device of an air conditioner to which the present invention is applied.
【図２】本発明におけるモード設定の手順を示す説明図
である。FIG. 2 is an explanatory diagram showing a mode setting procedure in the present invention.
１ ファン ２ 冷温水コイル ３ 温度測定器 ４ 温度測定器 ５ 給気温度設定値演算部 ６ ＰＩ演算部 ＭＶ１ 冷温水弁 Reference Signs List 1 fan 2 cold / hot water coil 3 temperature measuring device 4 temperature measuring device 5 supply air temperature set value calculation unit 6 PI calculation unit MV1 cold / hot water valve
Claims (3)
水または温水が供給される冷温水コイルに室内空気を強
制循環させるとともに、冷温水コイルへの冷温水流量を
流量調整弁の弁開度により調整する空調機の制御装置で
あって、 冷温水コイルに吸入される還気の温度を測定する温度測
定器と、 冷温水コイルから吐出された給気の温度を測定する温度
測定器と、 測定された還気温度と予め入力されている室内設定温度
とにもとづいて給気温度の設定値を算出する給気温度設
定値演算部と、 設定されている冷房または暖房の運転モードに応じて、
測定された給気温度と給気温度設定値演算部で算出され
た給気温度設定値とを用いて流量調整弁にＰＩ動作をさ
せるための弁駆動量を算出するＰＩ動作量演算部と、 を備えたことを特徴とする空調機制御装置。1. A room temperature is forcibly circulated through a chilled / hot water coil to which chilled water or hot water is supplied according to a cooling or heating operation mode, and a flow rate of the chilled / hot water to the chilled / hot water coil is determined by a valve opening of a flow control valve. A control device for the air conditioner to be adjusted, a temperature measuring device for measuring the temperature of the return air drawn into the cold / hot water coil, a temperature measuring device for measuring the temperature of the supply air discharged from the cold / hot water coil, A supply air temperature set value calculation unit that calculates a set value of the air supply temperature based on the returned air temperature and a room temperature input in advance, according to a set cooling or heating operation mode,
A PI operation amount calculation unit that calculates a valve drive amount for causing the flow rate adjustment valve to perform a PI operation using the measured supply air temperature and the supply air temperature set value calculated by the supply air temperature set value calculation unit; An air conditioner control device comprising:
て、 運転開始時に還気温度と室内設定温度とを比較し、室内
設定温度よりも還気温度が低い場合に暖房モードとし、
そうでない場合に冷房モードとしてモード設定をする手
段と、 暖房モード運転中に、還気温度と室内設定温度とを比較
し、還気温度が室内設定温度よりも高くなりかつ還気温
度と室内設定温度の差が予め設定されている不感帯の温
度幅の半分の値を越えた場合に冷房モード運転に切り替
える手段と、 冷房モード運転中に、還気温度と室内設定温度とを比較
し、還気温度が室内設定温度よりも低くなりかつ室内設
定温度と還気温度の差が予め設定されている不感帯の温
度幅の半分の値を越えた場合に暖房モード運転に切り替
える手段と、 を備えたことを特徴とする空調機制御装置。2. The air conditioner control device according to claim 1, wherein the return air temperature and the indoor set temperature are compared at the start of the operation, and when the return air temperature is lower than the indoor set temperature, the heating mode is set.
Otherwise, means for setting the mode as the cooling mode, and during the heating mode operation, the return air temperature and the indoor set temperature are compared, and the return air temperature becomes higher than the indoor set temperature and the return air temperature and the indoor set Means for switching to the cooling mode operation when the temperature difference exceeds a half value of a preset dead zone temperature width; and comparing the return air temperature and the indoor set temperature during the cooling mode operation to return the air. Means for switching to the heating mode operation when the temperature is lower than the indoor set temperature and the difference between the indoor set temperature and the return air temperature exceeds a half of a preset dead zone temperature width. An air conditioner control device characterized by the following.
御装置において、 給気温度設定値をＳＰ(゜C)、室内温度設定値をＳＰ
0(゜C)、還気温度をＰＶ(゜C)、補正値をα(゜Cdeg.)と
して、ＰＩ動作量演算部の算出する給気温度設定値を次
式、 ＳＰ＝２×ＳＰ0−ＰＶ＋α により算出し、式中の補正値αを冷房モード運転時には
−４゜Cdeg.とし、暖房モード運転時には４゜Cdeg.とし
た空調機制御装置。3. The air conditioner control device according to claim 1, wherein the supply air temperature setting value is SP (ＳＰC) and the indoor temperature setting value is SP.
0 (゜ C), the return air temperature is PV (゜ C), and the correction value is α (゜ Cdeg.). The supply air temperature set value calculated by the PI operation amount calculation unit is as follows: SP = 2 × SP 0 An air conditioner control device calculated by −PV + α, wherein the correction value α in the equation is -4 ° Cdeg. In the cooling mode operation and 4 ° Cdeg. In the heating mode operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34469397A JP3365544B2 (en) | 1997-12-15 | 1997-12-15 | Air conditioner controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34469397A JP3365544B2 (en) | 1997-12-15 | 1997-12-15 | Air conditioner controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11173631A true JPH11173631A (en) | 1999-07-02 |
| JP3365544B2 JP3365544B2 (en) | 2003-01-14 |
Family
ID=18371255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34469397A Expired - Fee Related JP3365544B2 (en) | 1997-12-15 | 1997-12-15 | Air conditioner controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3365544B2 (en) |
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| JP2001099457A (en) * | 1999-09-29 | 2001-04-13 | Mitsubishi Electric Corp | Air conditioner |
| JP2007212095A (en) * | 2006-02-10 | 2007-08-23 | Hitachi Plant Technologies Ltd | Air temperature control method and control system |
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| JP2001099457A (en) * | 1999-09-29 | 2001-04-13 | Mitsubishi Electric Corp | Air conditioner |
| JP2007212095A (en) * | 2006-02-10 | 2007-08-23 | Hitachi Plant Technologies Ltd | Air temperature control method and control system |
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| CN106679068A (en) * | 2016-11-28 | 2017-05-17 | 深圳达实智能股份有限公司 | Chilled water supply temperature setting method and system of main refrigeration machine of central air-conditioning system |
| CN106679068B (en) * | 2016-11-28 | 2019-07-05 | 深圳达实智能股份有限公司 | The chilled water supply water temperature setting method and system of central air conditioner system refrigeration host computer |
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