JP3407214B2 - Temperature control method of temperature control device - Google Patents
Temperature control method of temperature control deviceInfo
- Publication number
- JP3407214B2 JP3407214B2 JP11666398A JP11666398A JP3407214B2 JP 3407214 B2 JP3407214 B2 JP 3407214B2 JP 11666398 A JP11666398 A JP 11666398A JP 11666398 A JP11666398 A JP 11666398A JP 3407214 B2 JP3407214 B2 JP 3407214B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- upper limit
- lower limit
- control
- detected
- 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
- Control Of Temperature (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は工作機械等の発熱部
を冷却する冷却装置等の温調装置に用いて好適な温調装
置の温度制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control method for a temperature control device suitable for use in a temperature control device such as a cooling device for cooling a heat generating portion of a machine tool or the like.
【０００２】[0002]
【従来の技術】従来、目標温度に対して上限制御温度と
下限制御温度を設定し、検出温度に対するディファレン
シャル制御を行う冷却装置の温度制御方法は、特開昭６
３−１６１３５７号公報等で知られている。2. Description of the Related Art Conventionally, a temperature control method for a cooling device which sets an upper limit control temperature and a lower limit control temperature with respect to a target temperature and performs differential control with respect to a detected temperature is disclosed in Japanese Patent Laid-Open No.
It is known from Japanese Patent Laid-Open No. 3-161357.
【０００３】図６は、冷却装置により工作機械の発熱部
を冷却するに際し、従来の温度制御方法により温度制御
した場合の冷却液（検出温度Ｔｏ）の温度特性である。
同図において、Ｔｓは目標温度，Ｔｓｕ及びＴｓｄは当
該目標温度Ｔｓに対して設定したディファレンシャル制
御上の上限制御温度及び下限制御温度をそれぞれ示す。
このような設定により、冷却装置は冷却液の検出温度Ｔ
ｏが上限制御温度Ｔｓｕに達したなら冷却モードに移行
するとともに、当該検出温度Ｔｏが下限制御温度Ｔｓｄ
に達したなら加熱モードに移行する。なお、Ｔｒｕ及び
Ｔｒｄは、冷却液に要求される温度変動の許容範囲を規
定する上限規定温度及び下限規定温度をそれぞれ示す。FIG. 6 shows the temperature characteristics of the cooling liquid (detection temperature To) when the temperature is controlled by the conventional temperature control method when the heat generating portion of the machine tool is cooled by the cooling device.
In the figure, Ts indicates the target temperature, and Tsu and Tsd indicate the upper limit control temperature and the lower limit control temperature in the differential control set for the target temperature Ts, respectively.
With such a setting, the cooling device can detect the temperature T of the coolant.
When o reaches the upper limit control temperature Tsu, the cooling mode is entered, and the detected temperature To is lower limit control temperature Tsd.
When the temperature reaches, the heating mode is entered. Note that Tru and Trd respectively indicate an upper limit specified temperature and a lower limit specified temperature that define the allowable range of temperature fluctuation required for the cooling liquid.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上述した従
来の温度制御方法では、冷却液及び冷却装置に制御上及
び構造上の応答遅れが存在するため、検出温度Ｔｏが上
限制御温度Ｔｓｕに達して冷却モードに移行しても、検
出温度Ｔｏは上限制御温度Ｔｓｕを越えてオーバシュー
トする。このことは検出温度Ｔｏが下限制御温度Ｔｓｄ
に達して加熱モードに移行した場合も同じであり、検出
温度Ｔｏは下限制御温度Ｔｓｄを越えてアンダシュート
する。In the conventional temperature control method described above, however, the detected temperature To reaches the upper limit control temperature Tsu because of the control and structural response delays in the cooling liquid and the cooling device. Even after shifting to the cooling mode, the detected temperature To exceeds the upper limit control temperature Tsu and overshoots. This means that the detected temperature To is lower limit control temperature Tsd.
The same is true when the temperature is reached to the heating mode, and the detection temperature To exceeds the lower limit control temperature Tsd and undershoots.
【０００５】また、冷却液の温度特性（検出温度Ｔｏ）
は、負荷の大きさにも大きく影響され、図６に示すよう
に負荷が大きくなれば高温側にドリフトするとともに、
負荷が小さくなれば低温側にドリフトする。この結果、
検出温度Ｔｏは冷却液の温度変動の許容範囲を規定する
上限規定温度Ｔｒｕ，下限規定温度Ｔｒｄを越えてしま
い、冷却液に対する正確かつ安定した温度制御を行うこ
とができない問題があった。Further, the temperature characteristic of the cooling liquid (detection temperature To)
Is greatly affected by the size of the load, and as shown in FIG.
If the load becomes small, it will drift to the low temperature side. As a result,
Since the detected temperature To exceeds the upper limit specified temperature Tru and the lower limit specified temperature Trd that define the allowable range of the temperature fluctuation of the cooling liquid, there is a problem that the accurate and stable temperature control of the cooling liquid cannot be performed.
【０００６】そこで、この問題を解決するため、本出願
人は、検出温度Ｔｏの相前後する最小値と最大値を検出
し、最小値と最大値の平均値に基づいて、当該平均値を
正規の目標温度Ｔｓに一致させるための補正値を算出す
るとともに、当該補正値により目標温度Ｔｓを補正する
ようにした温度制御方法を、特開平９−１３４２２０号
公報で提案した。この温度制御方法によれば、負荷の影
響による温度特性（検出温度Ｔｏ）のドリフトが解消さ
れ、正確かつ安定した温度制御を行うことができる。Therefore, in order to solve this problem, the applicant of the present invention detects the minimum and maximum values of the detected temperature To which are consecutive, and normalizes the average value based on the average value of the minimum and maximum values. Japanese Patent Application Laid-Open No. 9-134220 proposes a temperature control method in which a correction value for matching the target temperature Ts is calculated and the target temperature Ts is corrected by the correction value. According to this temperature control method, the drift of the temperature characteristic (detection temperature To) due to the influence of the load is eliminated, and accurate and stable temperature control can be performed.
【０００７】しかし、かかる温度制御方法は、次のよう
な改善すべき点もあった。However, such a temperature control method has the following points to be improved.
【０００８】第一に、製造品質が温度変動により直接影
響を受けるレーザ加工機等では、温度変動を上限規定温
度と下限規定温度で規定される許容範囲に確実に抑える
ことが要求されるが、従来の温度制御方法ではこの要求
に十分応えることができず、温度制御における高度の安
定性及び信頼性を確保できない。First, in a laser processing machine or the like whose manufacturing quality is directly affected by temperature fluctuations, it is required to reliably suppress temperature fluctuations within an allowable range defined by an upper limit specified temperature and a lower limit specified temperature. The conventional temperature control method cannot sufficiently meet this requirement, and cannot secure a high degree of stability and reliability in temperature control.
【０００９】第二に、検出温度が上限規定温度（下限規
定温度）を越えないように、上限規定温度（下限規定温
度）と上限制御温度（下限制御温度）の差をある程度大
きく設定せざるを得ないため、図６に示すように、冷却
モードと加熱モードの切換周期が短くなり、冷却装置の
使用部品や機器類の寿命短縮を招いてしまう。Second, in order to prevent the detected temperature from exceeding the upper limit specified temperature (lower limit specified temperature), the difference between the upper limit specified temperature (lower limit specified temperature) and the upper limit control temperature (lower limit control temperature) must be set to a certain degree. Since it cannot be obtained, as shown in FIG. 6, the switching cycle between the cooling mode and the heating mode is shortened, which leads to a shortened life of parts used in the cooling device and devices.
【００１０】本発明はこのような従来の技術に存在する
課題を解決したものであり、温度変動を許容範囲に確実
に抑え、温度制御に対する高度の安定性と信頼性を確保
するとともに、使用部品や機器類の長寿命化を図ること
ができる温調装置の温度制御方法の提供を目的とする。The present invention solves the problems existing in the prior art as described above, and reliably suppresses temperature fluctuations within an allowable range, ensures a high degree of stability and reliability for temperature control, and uses parts. It is an object of the present invention to provide a temperature control method for a temperature control device that can prolong the life of devices and equipment.
【００１１】[0011]
【課題を解決するための手段及び実施の形態】本発明
は、目標温度Ｔｓに対して温度変動の許容範囲を規定す
る上限規定温度Ｔｒｕと下限規定温度Ｔｒｄを設定する
とともに、上限規定温度Ｔｒｕよりも低い上限制御温度
Ｔｓｕと下限規定温度Ｔｒｄよりも高い下限制御温度Ｔ
ｓｄを設定し、検出温度Ｔｏが上限制御温度Ｔｓｕに達
したなら冷却モードに移行し、検出温度Ｔｏが下限制御
温度Ｔｓｄに達したなら加熱モードに移行して、検出温
度Ｔｏに対するディファレンシャル制御を行う温調装置
１の温度制御方法において、検出温度Ｔｏの上限側ピー
ク温度Ｔｐｕを検出することにより、この上限側ピーク
温度Ｔｐｕと上限規定温度Ｔｒｕの偏差Ｅｕから上限側
補正温度Ｘｕを求め、この上限側補正温度Ｘｕに基づい
て、次の上限側ピーク温度Ｔｐｕを検出するまでに上限
制御温度Ｔｓｕの設定変更を行うとともに、検出温度Ｔ
ｏの下限側ピーク温度Ｔｐｄを検出することにより、こ
の下限側ピーク温度Ｔｐｄと下限規定温度Ｔｒｄの偏差
Ｅｄから下限側補正温度Ｘｄを求め、この下限側補正温
度Ｘｄに基づいて、次の下限側ピーク温度Ｔｐｄを検出
するまでに下限制御温度Ｔｓｄの設定変更を行うように
したことを特徴とする。Means and Embodiments for Solving the Problems The present invention sets an upper limit specified temperature Tru and a lower limit specified temperature Trd which define an allowable range of temperature fluctuations with respect to a target temperature Ts, and uses the upper limit specified temperature Tru. Lower upper limit control temperature Tsu and lower limit control temperature T higher than the lower limit specified temperature Trd
sd is set, and when the detected temperature To reaches the upper limit control temperature Tsu, the cooling mode is entered, and when the detected temperature To reaches the lower limit control temperature Tsd, the heating mode is entered and the differential control for the detected temperature To is performed. In the temperature control method of the temperature controller 1, by detecting the upper limit peak temperature Tpu of the detected temperature To, the upper limit correction temperature Xu is obtained from the deviation Eu between the upper limit peak temperature Tpu and the upper limit specified temperature Tru, and the upper limit correction temperature Xu is calculated. Based on the side corrected temperature Xu, the setting of the upper limit control temperature Tsu is changed until the next upper limit peak temperature Tpu is detected, and the detected temperature T
By detecting the lower limit side peak temperature Tpd of o, the lower limit side correction temperature Xd is obtained from the deviation Ed between the lower limit side peak temperature Tpd and the lower limit specified temperature Trd, and the next lower limit side temperature is calculated based on the lower limit side correction temperature Xd. It is characterized in that the setting of the lower limit control temperature Tsd is changed before the peak temperature Tpd is detected.
【００１２】この場合、好適な実施の形態により、上限
制御温度Ｔｓｕの設定変更は、上限側ピーク温度Ｔｐｕ
…の検出毎に行うとともに、係数をＫｕとすれば、（Ｔ
ｒｕ−Ｔｐｕ）×Ｋｕにより上限側補正温度Ｘｕを求
め、この上限側補正温度Ｘｕを上限制御温度Ｔｓｕに加
算して行うことができる。また、下限制御温度Ｔｓｄの
設定変更は、下限側ピーク温度Ｔｐｄ…の検出毎に行う
とともに、係数をＫｄとすれば、（Ｔｒｄ−Ｔｐｄ）×
Ｋｄにより下限側補正温度Ｘｄを求め、この下限側補正
温度Ｘｄを下限制御温度Ｔｓｄに加算して行うことがで
きる。なお、本発明に係る温度制御方法は、発熱部２を
冷却する冷却装置１ｃに適用できる。In this case, according to the preferred embodiment, the setting change of the upper limit control temperature Tsu is performed by changing the upper limit peak temperature Tpu.
Whenever the detection is performed and the coefficient is Ku, (T
It is possible to obtain the upper limit side correction temperature Xu by (ru−Tpu) × Ku and add the upper limit side correction temperature Xu to the upper limit control temperature Tsu. Further, the setting change of the lower limit control temperature Tsd is performed every time when the lower limit peak temperature Tpd ... Is detected, and when the coefficient is Kd, (Trd-Tpd) ×
The lower limit side correction temperature Xd can be obtained from Kd, and the lower limit side correction temperature Xd can be added to the lower limit control temperature Tsd. The temperature control method according to the present invention can be applied to the cooling device 1c that cools the heat generating portion 2.
【００１３】これにより、上限側ピーク温度Ｔｐｕが検
出されれば、この上限側ピーク温度Ｔｐｕと上限規定温
度Ｔｒｕの偏差Ｅｕから上限側補正温度Ｘｕが演算によ
り求められ、当該上限側補正温度Ｘｕに基づいて、次の
上限側ピーク温度Ｔｐｕを検出するまでに上限制御温度
Ｔｓｕに対する設定変更が行われる。この際、上限側ピ
ーク温度Ｔｐｕが上限規定温度Ｔｒｕを越えていれば、
上限制御温度Ｔｓｕは低くなる方向に設定変更され、次
の上限側ピーク温度Ｔｐｕは上限規定温度Ｔｒｕ以下と
なるように制御されるとともに、上限側ピーク温度Ｔｐ
ｕが上限規定温度Ｔｒｕを大きく下回れば、上限制御温
度Ｔｓｕは高くなる方向に設定変更され、次の上限側ピ
ーク温度Ｔｐｕは上限規定温度Ｔｒｕ以下であって、か
つ上限規定温度Ｔｒｕに近付くように制御される。他
方、下限側ピーク温度Ｔｐｄが検出された場合も、この
下限側ピーク温度Ｔｐｄと下限規定温度Ｔｒｄの偏差Ｅ
ｄから下限側補正温度Ｘｄが演算により求められ、当該
下限側補正温度Ｘｄに基づいて、次の下限側ピーク温度
Ｔｐｄを検出するまでに下限制御温度Ｔｓｄに対する設
定変更が行われることにより、同様の制御が行われる。Thus, when the upper limit peak temperature Tpu is detected, the upper limit correction temperature Xu is calculated from the deviation Eu between the upper limit peak temperature Tpu and the upper limit specified temperature Tru, and the upper limit correction temperature Xu is calculated. Based on this, the setting change for the upper limit control temperature Tsu is performed until the next upper limit peak temperature Tpu is detected. At this time, if the upper limit peak temperature Tpu exceeds the upper limit specified temperature Tru,
The upper limit control temperature Tsu is changed so as to decrease, the next upper limit peak temperature Tpu is controlled to be equal to or lower than the upper limit specified temperature Tru, and the upper limit peak temperature Tp is set.
When u is much lower than the upper limit specified temperature Tru, the upper limit control temperature Tsu is changed to a higher setting, and the next upper limit side peak temperature Tpu is equal to or lower than the upper limit specified temperature Tru and approaches the upper limit specified temperature Tru. Controlled. On the other hand, when the lower limit peak temperature Tpd is detected, the deviation E between the lower limit peak temperature Tpd and the lower limit specified temperature Trd is also detected.
The lower limit side correction temperature Xd is calculated from d, and the setting change to the lower limit control temperature Tsd is performed based on the lower limit side correction temperature Xd until the next lower limit side peak temperature Tpd is detected. Control is performed.
【００１４】[0014]
【実施例】次に、本発明に係る好適な実施例を挙げ、図
面に基づき詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.
【００１５】まず、本実施例に係る温度制御方法の実施
に用いる冷却装置について、図２を参照して説明する。First, a cooling device used for carrying out the temperature control method according to this embodiment will be described with reference to FIG.
【００１６】同図中、Ｍは発熱部２を有する工場内に設
置されたレーザ加工機等の工作機械である。一方、１ｃ
は冷却装置であり温調装置１を構成する。この冷却装置
１ｃは冷却液タンク３を備え、この冷却液タンク３に収
容された冷却液Ｗは、循環ポンプ４により冷却装置１ｃ
に内蔵する冷却器５に供給され、冷却（熱交換）後、冷
却液タンク３に戻される。冷却装置１ｃは、当該冷却器
５をはじめ、コンプレッサ６，凝縮器７及び膨張弁（キ
ャピラリチューブ）８を内蔵して公知の冷凍サイクルを
構成する。なお、９は開閉弁（ＣＣＶ）であり、循環ポ
ンプ４の停止時に冷媒ガスをバイパスさせる機能を有す
る。また、冷却液タンク３に収容された冷却液Ｗは、圧
送ポンプ１０により発熱部２に供給され、発熱部２を冷
却（熱交換）した後、冷却液タンク３に戻される。In the figure, M is a machine tool such as a laser processing machine installed in a factory having a heat generating part 2. On the other hand, 1c
Is a cooling device and constitutes the temperature control device 1. This cooling device 1c is provided with a cooling liquid tank 3, and the cooling liquid W contained in this cooling liquid tank 3 is cooled by the circulation pump 4 by the cooling device 1c.
It is supplied to the cooler 5 incorporated in the cooling tank 5, cooled (heat exchanged), and then returned to the cooling liquid tank 3. The cooling device 1c incorporates the cooler 5, the compressor 6, the condenser 7, and the expansion valve (capillary tube) 8 therein to configure a known refrigeration cycle. An on-off valve (CCV) 9 has a function of bypassing the refrigerant gas when the circulation pump 4 is stopped. Further, the cooling liquid W contained in the cooling liquid tank 3 is supplied to the heat generating portion 2 by the pressure feed pump 10 to cool (heat exchange) the heat generating portion 2 and then returned to the cooling liquid tank 3.
【００１７】他方、冷却液タンク３の内部には、冷却液
Ｗの温度を検出する温度センサ１１を付設し、この温度
センサ１１は制御部１２に接続する。また、この制御部
１２には循環ポンプ４を接続し、制御部１２は温度セン
サ１１から得る検出温度Ｔｏに基づいて循環ポンプ４を
オン−オフ制御する。On the other hand, a temperature sensor 11 for detecting the temperature of the cooling liquid W is attached inside the cooling liquid tank 3, and the temperature sensor 11 is connected to the control unit 12. Further, the circulation pump 4 is connected to the control unit 12, and the control unit 12 performs on / off control of the circulation pump 4 based on the detected temperature To obtained from the temperature sensor 11.
【００１８】次に、このような冷却装置１ｃを用いた本
実施例に係る温度制御方法について、図１に示すフロー
チャート及び図２〜図５を参照して説明する。Next, a temperature control method according to this embodiment using such a cooling device 1c will be described with reference to the flow chart shown in FIG. 1 and FIGS.
【００１９】まず、制御部１２には目標温度Ｔｓ（例え
ば、２０℃）を設定するとともに、この目標温度Ｔｓに
対して温度変動の許容範囲を規定する上限規定温度Ｔｒ
ｕ（例えば、２１℃）と下限規定温度Ｔｒｄ（例えば、
１９℃）をそれぞれ設定し、さらに、目標温度Ｔｓに対
するディファレンシャル制御上の上限制御温度Ｔｓｕ
（例えば、２０．２５℃）と下限制御温度Ｔｓｄ（例え
ば、１９．７５℃）をそれぞれ設定する。First, a target temperature Ts (for example, 20 ° C.) is set in the control unit 12, and an upper limit specified temperature Tr for defining an allowable range of temperature variation with respect to the target temperature Ts is set.
u (for example, 21 ° C.) and the lower limit specified temperature Trd (for example,
19 ° C.) and the upper limit control temperature Tsu in the differential control with respect to the target temperature Ts.
(For example, 20.25 ° C.) and the lower limit control temperature Tsd (for example, 19.75 ° C.) are set.
【００２０】一方、冷却装置１ｃの運転開始により、温
度センサ１１から検出される冷却液Ｗの検出温度Ｔｏが
目標温度Ｔｓよりも高い場合には冷却モードになり、制
御部１２の制御指令により循環ポンプ４がオン、即ち、
運転状態になって冷却液Ｗが冷却されるとともに、検出
温度Ｔｏが目標温度Ｔｓよりも低い場合には加熱モード
になり、循環ポンプ４がオフ、即ち、運転停止状態にな
って冷却液Ｗは冷却されない。On the other hand, when the cooling device 1c starts operating and the detected temperature To of the cooling liquid W detected by the temperature sensor 11 is higher than the target temperature Ts, the cooling mode is set, and the control unit 12 circulates the cooling mode. Pump 4 is on, ie
The cooling liquid W is cooled in the operating state, and when the detected temperature To is lower than the target temperature Ts, the heating mode is set, the circulation pump 4 is turned off, that is, the operating state is stopped, and the cooling liquid W is Not cooled.
【００２１】今、図３において、冷却装置１ｃが加熱モ
ードで運転されているものとする。温度センサ１１から
は冷却液Ｗの温度が検出されるため、制御部１２は温度
センサ１１から検出される検出温度Ｔｏを監視する（ス
テップＳ１）。検出温度Ｔｏが上昇し、上限制御温度Ｔ
ｓｕに達すれば、冷却モードに移行し、循環ポンプ４が
運転を開始（オン）する。冷却液Ｗの温度（検出温度Ｔ
ｏ）は応答遅れにより暫く上昇した後、上限側ピーク温
度Ｔｐｕを頂点にして下降に転じるため、制御部１２は
当該上限側ピーク温度Ｔｐｕを検出して記憶する（ステ
ップＳ２）。そして、検出温度Ｔｏが下限制御温度Ｔｓ
ｄに達すれば、加熱モードに移行し、循環ポンプ４は運
転を停止（オフ）する（ステップＳ３）。Now, in FIG. 3, it is assumed that the cooling device 1c is operated in the heating mode. Since the temperature of the coolant W is detected by the temperature sensor 11, the controller 12 monitors the detected temperature To detected by the temperature sensor 11 (step S1). The detected temperature To rises and the upper limit control temperature T
When it reaches su, the cooling mode is entered, and the circulation pump 4 starts (turns on) operation. Temperature of coolant W (detection temperature T
In (o), the temperature rises for a while due to the response delay, and then starts to decrease at the peak of the upper limit peak temperature Tpu, so the control unit 12 detects and stores the upper limit peak temperature Tpu (step S2). Then, the detected temperature To is the lower limit control temperature Ts.
When the temperature reaches d, the heating mode is entered, and the circulation pump 4 is stopped (turned off) (step S3).
【００２２】この際、制御部１２は上限側補正温度Ｘｕ
を演算により求める（ステップＳ４）。即ち、上限側補
正温度Ｘｕを、Ｘｕ＝（Ｔｒｕ−Ｔｐｕ）×Ｋｕの演算
式から求める。この場合、Ｋｕは係数であり、例えば、
０．３〜０．７程度に設定できる。そして、得られた上
限側補正温度Ｘｕに基づいて上限制御温度Ｔｓｕを設定
変更する（ステップＳ５）。具体的には、得られた上限
側補正温度Ｘｕを上限制御温度Ｔｓｕにそのまま加算す
ればよい。このような上限制御温度Ｔｓｕに対する設定
変更は、上限側ピーク温度Ｔｐｕ…の発生毎に行う。図
３の例では、上限側ピーク温度Ｔｐｕが上限規定温度Ｔ
ｒｕより大きく下回っているため、上限制御温度Ｔｓｕ
はＴｓｕｃまで高められる。At this time, the control unit 12 controls the upper limit side correction temperature Xu.
Is calculated (step S4). That is, the upper limit side correction temperature Xu is obtained from the arithmetic expression of Xu = (Tru-Tpu) * Ku. In this case, Ku is a coefficient, for example,
It can be set to about 0.3 to 0.7. Then, the setting of the upper limit control temperature Tsu is changed based on the obtained upper limit correction temperature Xu (step S5). Specifically, the obtained upper limit correction temperature Xu may be added as it is to the upper limit control temperature Tsu. The setting change to the upper limit control temperature Tsu is performed every time the upper limit peak temperature Tpu ... Occurs. In the example of FIG. 3, the upper limit side peak temperature Tpu is the upper limit specified temperature T.
Since it is much lower than ru, the upper limit control temperature Tsu
Is increased to Tsuc.
【００２３】一方、加熱モードへの移行後、冷却液Ｗの
温度（検出温度Ｔｏ）は、応答遅れにより暫く下降した
後、下限側ピーク温度Ｔｐｄを頂点にして上昇に転じる
ため、制御部１２は当該下限側ピーク温度Ｔｐｄを検出
して記憶する（ステップＳ６，Ｓ７）。そして、検出温
度Ｔｏが上限制御温度Ｔｓｕに達すれば、冷却モードに
移行し、循環ポンプ４は運転を開始（オン）する（ステ
ップＳ８）。On the other hand, after the shift to the heating mode, the temperature of the coolant W (detected temperature To) drops for a while due to the response delay, and then starts to rise at the peak of the lower limit side peak temperature Tpd. The lower limit peak temperature Tpd is detected and stored (steps S6 and S7). When the detected temperature To reaches the upper limit control temperature Tsu, the cooling mode is entered, and the circulation pump 4 starts (turns on) its operation (step S8).
【００２４】この際、制御部１２は下限側補正温度Ｘｄ
を演算により求める（ステップＳ９）。即ち、下限側補
正温度Ｘｄを、Ｘｄ＝（Ｔｒｄ−Ｔｐｄ）×Ｋｄの演算
式から求める。この場合、Ｋｄは係数であり、例えば、
０．６〜０．９程度に設定できる。そして、得られた下
限側補正温度Ｘｄに基づいて下限制御温度Ｔｓｄを設定
変更する（ステップＳ１０）。具体的には、得られた下
限側補正温度Ｘｄを下限制御温度Ｔｓｄにそのまま加算
すればよい。このような下限制御温度Ｔｓｄに対する設
定変更は、下限側ピーク温度Ｔｐｄ…の発生毎に行う。
図３の例では、下限側ピーク温度Ｔｐｄが下限規定温度
Ｔｒｄより低温側に大きく越えているため、下限制御温
度ＴｓｄはＴｓｄｃまで高められる。このような設定変
更により、製造品質が温度変動により直接影響を受ける
レーザ加工機等であっても、温度変動は許容範囲に確実
に抑えられ、温度制御に対する高度の安定性と信頼性が
確保される。At this time, the control unit 12 controls the lower limit correction temperature Xd.
Is calculated (step S9). That is, the lower limit side correction temperature Xd is obtained from the arithmetic expression of Xd = (Trd−Tpd) × Kd. In this case, Kd is a coefficient, for example,
It can be set to about 0.6 to 0.9. Then, the lower limit control temperature Tsd is set and changed based on the obtained lower limit side correction temperature Xd (step S10). Specifically, the obtained lower limit side correction temperature Xd may be directly added to the lower limit control temperature Tsd. The setting change to the lower limit control temperature Tsd is performed every time the lower limit side peak temperature Tpd ... Occurs.
In the example of FIG. 3, the lower limit side peak temperature Tpd greatly exceeds the lower limit specified temperature Trd on the lower temperature side, so the lower limit control temperature Tsd is increased to Tsdc. By changing the settings like this, even in a laser processing machine whose manufacturing quality is directly affected by temperature fluctuations, temperature fluctuations can be reliably suppressed within an allowable range, and high stability and reliability for temperature control can be secured. It
【００２５】他方、図４及び図５はそれぞれ異なる制御
態様を示す。図３は上限側ピーク温度Ｔｐｕが上限規定
温度Ｔｒｕより大きく下回り、また、下限側ピーク温度
Ｔｐｄが下限規定温度Ｔｒｄより低温側に大きく越えた
ため、上限制御温度Ｔｓｕ及び下限制御温度Ｔｓｄをそ
れぞれ高くなるように設定変更した場合を示したが、図
４は上限側ピーク温度Ｔｐｕが上限規定温度Ｔｒｕより
高温側に大きく越え、また、下限側ピーク温度Ｔｐｄが
下限規定温度Ｔｒｄより大きく上回るため、上限制御温
度Ｔｓｕ及び下限制御温度Ｔｓｄをそれぞれ低くなるよ
うに設定変更する場合を示す。この場合も、温度変動は
図３と同様に許容範囲に確実に抑えられ、温度制御に対
する高度の安定性と信頼性が確保される。On the other hand, FIGS. 4 and 5 show different control modes. In FIG. 3, the upper limit side peak temperature Tpu is much lower than the upper limit specified temperature Tru and the lower limit side peak temperature Tpd is much lower than the lower limit specified temperature Trd, so that the upper limit control temperature Tsu and the lower limit control temperature Tsd are respectively increased. The upper limit peak temperature Tpu greatly exceeds the upper limit specified temperature Tru, and the lower limit peak temperature Tpd exceeds the lower limit specified temperature Trd, so that the upper limit control is performed. The case where the settings of the temperature Tsu and the lower limit control temperature Tsd are changed to be low will be described. Also in this case, the temperature fluctuation is surely suppressed within the allowable range as in FIG. 3, and a high degree of stability and reliability for temperature control are secured.
【００２６】さらに、図５は上限側ピーク温度Ｔｐｕが
上限規定温度Ｔｒｕより大きく下回り、また、下限側ピ
ーク温度Ｔｐｄも下限規定温度Ｔｒｄより大きく上回る
ため、上限制御温度Ｔｓｕを高くなるように設定変更す
るとともに、下限制御温度Ｔｓｄを低くなるように設定
変更する場合を示す。図５の場合には、冷却モードと加
熱モードの切換周期が長くなるため、使用部品や機器類
の長寿命化を図ることができる。Further, in FIG. 5, since the upper limit side peak temperature Tpu is much lower than the upper limit specified temperature Tru and the lower limit side peak temperature Tpd is also much higher than the lower limit specified temperature Trd, the upper limit control temperature Tsu is changed to a higher setting. In addition, the case where the lower limit control temperature Tsd is changed to a lower setting will be described. In the case of FIG. 5, the switching cycle between the cooling mode and the heating mode becomes long, so that it is possible to prolong the service life of the parts and equipment used.
【００２７】以上、実施例について詳細に説明したが、
本発明はこのような実施例に限定されるものではなく、
細部の構成，数値，手法等において本発明の要旨を逸脱
しない範囲で任意に変更，追加，削除することができ
る。例えば、設定変更は、上限側ピーク温度Ｔｐｕ（下
限側ピーク温度Ｔｐｄ）を検出した後、下限制御温度Ｔ
ｓｄ（上限制御温度Ｔｓｕ）に達した時点で行った場合
を示したが、設定変更のタイミングは、上限側ピーク温
度Ｔｐｕ（下限側ピーク温度Ｔｐｄ）を検出した後、次
の上限側ピーク温度Ｔｐｕ（下限側ピーク温度Ｔｐｄ）
を検出するまでの任意のタイミングで行うことができ
る。また、温調装置１は、発熱部２を冷却する冷却装置
１ｃに適用した場合を示したが、加熱装置等の他の任意
の温調装置１に適用できる。The embodiment has been described in detail above.
The present invention is not limited to such an embodiment,
It is possible to arbitrarily change, add, or delete the detailed configuration, numerical values, method, and the like without departing from the scope of the present invention. For example, the setting is changed by detecting the upper limit side peak temperature Tpu (lower limit side peak temperature Tpd) and then lower limit control temperature T
Although the case where it is performed when the temperature reaches sd (upper limit control temperature Tsu) is shown, the timing of the setting change is as follows after detecting the upper limit side peak temperature Tpu (lower limit side peak temperature Tpd). (Lower limit peak temperature Tpd)
Can be performed at any timing until it is detected. Further, although the temperature control device 1 is applied to the cooling device 1c for cooling the heat generating portion 2, it can be applied to any other temperature control device 1 such as a heating device.
【００２８】[0028]
【発明の効果】このように、本発明に係る温調装置の温
度制御方法は、検出温度の上限側ピーク温度を検出する
ことにより、この上限側ピーク温度と上限規定温度の偏
差から上限側補正温度を求め、この上限側補正温度に基
づいて、次の上限側ピーク温度を検出するまでに上限制
御温度の設定変更を行うとともに、検出温度の下限側ピ
ーク温度を検出することにより、この下限側ピーク温度
と下限規定温度の偏差から下限側補正温度を求め、この
下限側補正温度に基づいて、次の下限側ピーク温度を検
出するまでに下限制御温度の設定変更を行うようにした
ため、次のような顕著な効果を奏する。As described above, the temperature control method of the temperature controller according to the present invention detects the upper limit side peak temperature of the detected temperature, and corrects the upper limit side from the deviation between the upper limit side peak temperature and the upper limit specified temperature. Obtain the temperature, and based on this upper limit side corrected temperature, change the setting of the upper limit control temperature until the next upper limit peak temperature is detected, and detect the lower limit peak temperature of the detected temperature. The lower limit correction temperature is calculated from the deviation between the peak temperature and the lower limit specified temperature, and based on this lower limit correction temperature, the setting of the lower limit control temperature is changed until the next lower limit peak temperature is detected. It has such a remarkable effect.
【００２９】 製造品質が温度変動により直接影響を
受けるレーザ加工機等であっても、温度変動を許容範囲
に確実に抑え、温度制御に対する高い安定性と信頼性を
確保できる。Even in a laser processing machine or the like whose manufacturing quality is directly affected by temperature fluctuations, temperature fluctuations can be reliably suppressed within an allowable range, and high stability and reliability for temperature control can be secured.
【００３０】 の確保に加えて、冷却モードと加熱
モードの切換周期を長くできるため、使用部品や機器類
の長寿命化を図ることができる。In addition to ensuring the above, the switching cycle between the cooling mode and the heating mode can be lengthened, so that the life of the parts and equipment used can be extended.
【図１】本発明の実施例に係る温度制御方法の処理手順
を示すフローチャート、FIG. 1 is a flowchart showing a processing procedure of a temperature control method according to an embodiment of the present invention,
【図２】同温度制御方法を実施できる冷却装置のブロッ
ク構成図、FIG. 2 is a block configuration diagram of a cooling device capable of implementing the same temperature control method,
【図３】同温度制御方法により温度制御した際における
検出温度の変化特性図、FIG. 3 is a characteristic diagram of change in detected temperature when temperature is controlled by the same temperature control method,
【図４】同温度制御方法により温度制御した際における
検出温度の他の変化特性図、FIG. 4 is another change characteristic diagram of the detected temperature when the temperature is controlled by the same temperature control method,
【図５】同温度制御方法により温度制御した際における
検出温度の他の変化特性図、FIG. 5 is another change characteristic diagram of the detected temperature when the temperature is controlled by the same temperature control method,
【図６】従来の技術に係る温度制御方法により温度制御
した際における検出温度の変化特性図、FIG. 6 is a change characteristic diagram of the detected temperature when the temperature is controlled by the conventional temperature control method,
１ 温調装置 １ｃ 冷却装置 ２ 発熱部 Ｔｓ 目標温度 Ｔｏ 検出温度 Ｔｒｕ 上限規定温度 Ｔｒｄ 下限規定温度 Ｔｓｕ 上限制御温度 Ｔｓｄ 下限制御温度 Ｔｐｕ 上限側ピーク温度 Ｔｐｄ 下限側ピーク温度 Ｅｕ 上限側ピーク温度と上限規定温度の偏差 Ｅｄ 下限側ピーク温度と下限規定温度の偏差 Ｘｕ 上限側補正温度 Ｘｄ 下限側補正温度 1 Temperature controller 1c Cooling device 2 heating part Ts target temperature To detection temperature Tru upper limit specified temperature Trd lower limit specified temperature Tsu upper limit control temperature Tsd lower limit control temperature Tpu upper limit peak temperature Tpd lower limit peak temperature Eu Deviation between upper limit peak temperature and upper limit specified temperature Ed Deviation between lower limit peak temperature and lower limit specified temperature Xu Upper limit correction temperature Xd Lower limit correction temperature
───────────────────────────────────────────────────── フロントページの続き (72)発明者 丸山 真也 長野県須坂市大字幸高246番地 オリオ ン機械株式会社内 (56)参考文献 特開 平９−134220（ＪＰ，Ａ) 特開 平４−335977（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G05B 23/00 - 23/32 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shinya Maruyama Shinya Maruyama 246 Kodaka, Suzaka City, Nagano Orion Machinery Co., Ltd. (56) Reference JP-A-9-134220 (JP, A) JP-A-4- 335977 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G05B 23 / 00-23 / 32
Claims (6)
規定する上限規定温度と下限規定温度を設定するととも
に、前記上限規定温度よりも低い上限制御温度と前記下
限規定温度よりも高い下限制御温度を設定し、検出温度
が前記上限制御温度に達したなら冷却モードに移行し、
前記検出温度が前記下限制御温度に達したなら加熱モー
ドに移行して、検出温度に対するディファレンシャル制
御を行う温調装置の温度制御方法において、前記検出温
度の上限側ピーク温度を検出することにより、この上限
側ピーク温度と前記上限規定温度の偏差から上限側補正
温度を求め、この上限側補正温度に基づいて、次の上限
側ピーク温度を検出するまでに前記上限制御温度の設定
変更を行うとともに、前記検出温度の下限側ピーク温度
を検出することにより、この下限側ピーク温度と前記下
限規定温度の偏差から下限側補正温度を求め、この下限
側補正温度に基づいて、次の下限側ピーク温度を検出す
るまでに前記下限制御温度の設定変更を行うことを特徴
とする温調装置の温度制御方法。1. An upper limit specified temperature and a lower limit specified temperature that define an allowable range of temperature fluctuations with respect to a target temperature are set, and an upper limit control temperature lower than the upper limit specified temperature and a lower limit control higher than the lower limit specified temperature. Set the temperature, if the detected temperature reaches the upper limit control temperature, shift to the cooling mode,
When the detected temperature reaches the lower limit control temperature, the mode is shifted to the heating mode, and in the temperature control method of the temperature controller that performs the differential control for the detected temperature, by detecting the upper limit peak temperature of the detected temperature, Obtaining the upper limit side correction temperature from the deviation between the upper limit side peak temperature and the upper limit specified temperature, based on this upper limit side correction temperature, while changing the setting of the upper limit control temperature until the next upper limit side peak temperature is detected, By detecting the lower limit side peak temperature of the detected temperature, the lower limit side correction temperature is obtained from the difference between the lower limit side peak temperature and the lower limit specified temperature, and the next lower limit side peak temperature is calculated based on this lower limit side correction temperature. A temperature control method for a temperature control device, characterized in that the setting of the lower limit control temperature is changed before detection.
ピーク温度の検出毎に行うことを特徴とする請求項１記
載の温調装置の温度制御方法。2. The temperature control method for a temperature controller according to claim 1, wherein the setting change of the upper limit control temperature is performed every time the upper limit side peak temperature is detected.
ピーク温度をＴｐｕ，係数をＫｕとすれば、（Ｔｒｕ−
Ｔｐｕ）×Ｋｕにより前記上限側補正温度を求め、この
上限側補正温度を前記上限制御温度に加算することによ
り、当該上限制御温度の設定変更を行うことを特徴とす
る請求項１又は２記載の温調装置の温度制御方法。3. When the upper limit specified temperature is Tru, the upper limit side peak temperature is Tpu, and the coefficient is Ku, (Tru-
3. The setting of the upper limit control temperature is changed by obtaining the upper limit correction temperature by Tpu) × Ku and adding the upper limit correction temperature to the upper limit control temperature. Temperature control method of temperature controller.
ピーク温度の検出毎に行うことを特徴とする請求項１記
載の温調装置の温度制御方法。4. The temperature control method for a temperature controller according to claim 1, wherein the setting change of the lower limit control temperature is performed every time when the lower limit side peak temperature is detected.
ピーク温度をＴｐｄ，係数をＫｄとすれば、（Ｔｒｄ−
Ｔｐｄ）×Ｋｄにより前記下限側補正温度を求め、この
下限側補正温度を前記下限制御温度に加算することによ
り、当該下限制御温度の設定変更を行うことを特徴とす
る請求項１又は４記載の温調装置の温度制御方法。5. If the lower limit specified temperature is Trd, the lower limit side peak temperature is Tpd, and the coefficient is Kd, then (Trd-
5. The setting of the lower limit control temperature is changed by obtaining the lower limit side correction temperature by Tpd) × Kd and adding the lower limit side correction temperature to the lower limit control temperature. Temperature control method of temperature controller.
とを特徴とする請求項１記載の温調装置の温度制御方
法。6. The temperature control method for a temperature control device according to claim 1, wherein the temperature control method is applied to a cooling device for cooling a heat generating portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11666398A JP3407214B2 (en) | 1998-04-27 | 1998-04-27 | Temperature control method of temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11666398A JP3407214B2 (en) | 1998-04-27 | 1998-04-27 | Temperature control method of temperature control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11305846A JPH11305846A (en) | 1999-11-05 |
| JP3407214B2 true JP3407214B2 (en) | 2003-05-19 |
Family
ID=14692823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11666398A Expired - Fee Related JP3407214B2 (en) | 1998-04-27 | 1998-04-27 | Temperature control method of temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3407214B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106020269B (en) * | 2016-06-30 | 2017-12-12 | 珠海格力电器股份有限公司 | Temperature control method and device and equipment |
-
1998
- 1998-04-27 JP JP11666398A patent/JP3407214B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11305846A (en) | 1999-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1148307B1 (en) | Heat-pump water heater | |
| US20060225876A1 (en) | Constant temperature controller | |
| US5040379A (en) | Temperature controller of liquid cooling system | |
| US10314200B2 (en) | Variable frequency drive operation to avoid overheating | |
| JP2001071742A (en) | Method to operate aircondtioner for vehicle which is operated subcritically and transition-critically | |
| KR100435999B1 (en) | Method for protecting compressors used in chillers and/or heat pumps | |
| JPH01266609A (en) | Cut-in/cut-out temperature difference setting for cooler or heater | |
| CN113280541A (en) | Control method and device for multi-chamber electronic expansion valve of refrigeration system and refrigeration system | |
| JP3407214B2 (en) | Temperature control method of temperature control device | |
| EP0654370A1 (en) | System for preventing fogging in climate controls system | |
| JP6146606B2 (en) | Air conditioner | |
| JP3407215B2 (en) | Temperature control method of temperature control device | |
| JP2816789B2 (en) | Cold water supply device | |
| JP7171044B2 (en) | refrigeration equipment | |
| JPH07104060B2 (en) | Starter for dual refrigeration system | |
| JPH11153362A (en) | Refrigerating device | |
| CN114061207B (en) | Refrigerator, control method of refrigerator and computer readable storage medium | |
| JPH0337204B2 (en) | ||
| US11855267B1 (en) | Methods and apparatus for controlling cooling capacity of a multi- evaporator cooling system | |
| JP2856015B2 (en) | Thermal storage type air conditioner | |
| CN112078321B (en) | Control method and vehicle thermal management system | |
| JP4407389B2 (en) | Refrigeration equipment | |
| JPS6383556A (en) | Refrigeration cycle | |
| JP2007218490A (en) | Control method of cooling device | |
| JPH024165A (en) | Temperature control device for liquid cooler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |