JPH056109B2 - - Google Patents
Info
- Publication number
- JPH056109B2 JPH056109B2 JP58121019A JP12101983A JPH056109B2 JP H056109 B2 JPH056109 B2 JP H056109B2 JP 58121019 A JP58121019 A JP 58121019A JP 12101983 A JP12101983 A JP 12101983A JP H056109 B2 JPH056109 B2 JP H056109B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- control
- compressor
- refrigeration
- deviation
- 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
- 238000005057 refrigeration Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000007710 freezing Methods 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【発明の詳細な説明】
本発明は温度制御装置、特に冷凍コンテナと呼
ばれる輪送すべき物品が格納された室内の空気の
温度制御に好適な温度制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a temperature control device, and particularly to a temperature control device suitable for controlling the temperature of the air inside a room in which articles to be transported, called a refrigerated container, are stored.
従来の冷凍コンテナの温度制御装置の一例が第
１図に示され、１０は輪送すべき物品が格納され
る室で、室内空気は送風機１２を駆動することに
よつて図に白抜矢印で示すように蒸発器４および
ヒータ１１を通つて循環せしめられる。１は冷凍
圧縮機で、この冷凍圧縮機１から吐出された高温
高圧の冷媒ガスは凝縮器２に入つてここで冷却さ
れて凝縮液化せしめられ、次いで絞り３に入つて
ここで断熱膨張し、次いで蒸発器４に入つてここ
で室１０を循環する空気を冷却し自身は加熱され
て蒸発して気化しガス状となつて圧縮機１に戻
る。圧縮機１の運転中弁５を開くことにより、圧
縮機１から吐出された高温高圧の冷媒ガスの１部
が凝縮器２および絞り３をバイパスして放熱する
ことなく蒸発器４に流入し、蒸発器４における冷
却能力を低減でき、また、弁５の開度を加減する
ことにより、冷却能力を無段階に制御することが
できる。８は戻り空気６の温度を検出する温度検
知器、９は吹き出し空気７の温度を検出する温度
検知器、１４は温度検知器選択手段で、温度設定
手段１５で任意に設定された設定温度が冷蔵条件
のときはこの信号を受けて温度検知器９で検出し
た吹出空気７の温度を制御に用いることを選択
し、温度設定手段１５で設定された設定温度が冷
凍条件のときはこの信号を受けて温度検知器８で
検出した戻り空気６の温度を制御に用いることを
選択する。１６は偏差算出装置で、温度検知選択
手段１４で選択された温度検知器８又は９の検出
温度と温度設定手段１５で設定された温度とを対
比して両者の偏差を演算し、これを運転指示装置
２０に出力する。１７はサーモスタツト選択手段
で、温度設定手段１５で設定された設定温度が冷
蔵条件のときはこの信号を受けて冷蔵用サーモス
タツト１８を選択し、設定温度が冷凍条件のとき
はこの信号を受けて冷凍用サーモスタツト１９を
選択する。運転指示装置２０では偏差算出装置１
６から出力された偏差とサーモスタツト選択手段
１７からの入力されるサーモスタツト１８または
１９に設定されている偏差とを対比し、これらサ
ーモスタツト１８または１９の動作パターンに従
つて所定の運転モードで圧縮機１、弁５、ヒータ
１１および送風機１２を運転する指令を出す。室
１０内に冷凍品を格納し、室温を所定温度以下に
維持する場合、例えば温度設定手段１５に−18℃
を設定すると、これからの信号により温度検知器
選択手段１４は温度検知器８を選択し、サーモス
タツト選択手段１７は冷凍用サーモスタツト１９
を選択する。温度検知器８で検出した戻り空気６
の検出温度が温度設定手段１５により設定された
設定温度即ち−18℃より高い場合、この偏差は偏
差算出装置１６を経て運転指示装置２０に入力さ
れ、ここで冷凍用サーモスタツト１９に設定され
ている偏差と比較され、前者が後者以上である場
合は、運転指示装置２０からの指示により冷媒圧
縮機１、送風機１２を起動して、室１０内を循環
する空気を蒸発器４により冷却する。空気温度が
低下して検出温度と設定温度との偏差が冷凍用サ
ーモスタツト１９に設定されている偏差以下にな
ると運転指示装置２０からの指示により冷媒圧縮
機１は停止し、以下上記の起動、停止を繰返すこ
とにより室１０内温度は温度設定手段１５で設定
された−18℃に維持される。また、室１０内に冷
蔵品を格納するため、温度設定手段１５に例えば
０℃を設定した場合、温度検知器選択手段１４は
温度検知器９を選択し、サーモスタツト選択手段
１７は冷蔵用サーモスタツト１８を選択する。温
度検知器９で検出した吹出し空気７の検出温度が
設定温度即ち０℃より高い場合においてこの偏差
が冷蔵用サーモスタツト１８に設定されている偏
差より大きいときは運転指示装置２０からの指示
により圧縮機１および送風機１２を駆動し、室１
０内温度が降下して、検出温度と設定温度との偏
差が冷蔵用サーモスタツト１８に設定されている
偏差以下になると、運転指示装置２０からの指示
により弁５が開弁し、蒸発器４の冷却能力を低減
する。以後、圧縮機１の運転を続けながら弁５の
開度を運転指示装置２０からの指示によつて調整
して蒸発器４の冷却能力を調整するが、室１０の
熱負荷が弁５による調整範囲を越えて下つた場合
には運転指示装置２０の指示によりヒータ１１を
通電させ室１０の熱負荷と蒸発器４の冷却能力と
の平衡を維持する。また、検出温度と設定温度と
の偏差が冷蔵用サーモスタツト１８で設定された
偏差以下の場合には、圧縮機１を起動せずにヒー
タ１１を送風機１２を起動してこれにより循環空
気を加熱し、室１０内温度が上昇して検出温度と
設定温度との偏差が冷蔵用サーモスタツト１８に
よる設定偏差以上に達した時点で圧縮機１を始動
する。 An example of a conventional temperature control device for a refrigerated container is shown in FIG. 1, where 10 is a chamber where articles to be transported are stored, and indoor air is supplied by driving a blower 12 as indicated by the white arrow in the figure. It is circulated through the evaporator 4 and heater 11 as shown. Reference numeral 1 designates a refrigeration compressor, and the high-temperature, high-pressure refrigerant gas discharged from the refrigeration compressor 1 enters a condenser 2, where it is cooled and condensed and liquefied, and then enters a throttle 3, where it is adiabatically expanded. The air then enters the evaporator 4, where it cools the air circulating in the chamber 10, where it is heated, evaporates, and returns to the compressor 1 in the form of a gas. By opening the valve 5 during operation of the compressor 1, a part of the high temperature and high pressure refrigerant gas discharged from the compressor 1 bypasses the condenser 2 and the throttle 3 and flows into the evaporator 4 without releasing heat. The cooling capacity in the evaporator 4 can be reduced, and by adjusting the opening degree of the valve 5, the cooling capacity can be controlled steplessly. 8 is a temperature sensor for detecting the temperature of the return air 6; 9 is a temperature sensor for detecting the temperature of the blown air 7; 14 is a temperature sensor selection means; the set temperature arbitrarily set by the temperature setting means 15; When the refrigeration condition is selected, this signal is received and the temperature of the blown air 7 detected by the temperature sensor 9 is selected to be used for control, and when the set temperature set by the temperature setting means 15 is the refrigeration condition, this signal is selected. Then, the temperature of the return air 6 detected by the temperature sensor 8 is selected to be used for control. Reference numeral 16 denotes a deviation calculating device, which compares the detected temperature of the temperature detector 8 or 9 selected by the temperature detection selection means 14 and the temperature set by the temperature setting means 15, calculates the deviation between the two, and calculates the difference between the two. Output to the instruction device 20. Reference numeral 17 denotes a thermostat selection means which receives this signal and selects the refrigerating thermostat 18 when the set temperature set by the temperature setting means 15 is a refrigeration condition, and receives this signal when the set temperature is a refrigeration condition. to select the refrigeration thermostat 19. In the driving instruction device 20, the deviation calculation device 1
The deviation output from the thermostat 6 is compared with the deviation set in the thermostat 18 or 19 inputted from the thermostat selection means 17, and a predetermined operation mode is selected according to the operation pattern of these thermostats 18 or 19. A command is issued to operate the compressor 1, valve 5, heater 11, and blower 12. When storing frozen products in the chamber 10 and maintaining the room temperature below a predetermined temperature, for example, the temperature setting means 15 is set to -18°C.
When set, the temperature sensor selection means 14 selects the temperature sensor 8 based on the signal from now on, and the thermostat selection means 17 selects the refrigeration thermostat 19.
Select. Return air 6 detected by temperature detector 8
If the detected temperature is higher than the set temperature set by the temperature setting means 15, that is, -18°C, this deviation is inputted to the operation instruction device 20 via the deviation calculation device 16, where it is set in the refrigeration thermostat 19. If the former is greater than or equal to the latter, the refrigerant compressor 1 and blower 12 are activated in response to an instruction from the operation instruction device 20, and the air circulating in the room 10 is cooled by the evaporator 4. When the air temperature decreases and the deviation between the detected temperature and the set temperature becomes less than the deviation set in the refrigeration thermostat 19, the refrigerant compressor 1 is stopped by an instruction from the operation instruction device 20, and then the above-mentioned startup, By repeating the stoppage, the temperature inside the chamber 10 is maintained at -18°C, which is set by the temperature setting means 15. Further, in order to store refrigerated items in the chamber 10, when the temperature setting means 15 is set to, for example, 0°C, the temperature sensor selection means 14 selects the temperature sensor 9, and the thermostat selection means 17 selects the refrigerating thermos. Select tattoo 18. When the detected temperature of the blown air 7 detected by the temperature detector 9 is higher than the set temperature, that is, 0°C, and this deviation is larger than the deviation set in the refrigeration thermostat 18, the compressor is The air blower 1 and the blower 12 are driven to
When the internal temperature drops and the deviation between the detected temperature and the set temperature becomes equal to or less than the deviation set in the refrigeration thermostat 18, the valve 5 opens according to an instruction from the operation instruction device 20, and the evaporator 4 reduce the cooling capacity of Thereafter, while the compressor 1 continues to operate, the opening degree of the valve 5 is adjusted according to instructions from the operation instruction device 20 to adjust the cooling capacity of the evaporator 4, but the heat load in the chamber 10 is adjusted by the valve 5. If the temperature exceeds the range, the heater 11 is energized according to an instruction from the operation instruction device 20 to maintain a balance between the heat load of the chamber 10 and the cooling capacity of the evaporator 4. In addition, if the deviation between the detected temperature and the set temperature is less than the deviation set by the refrigeration thermostat 18, the heater 11 and blower 12 are started without starting the compressor 1, thereby heating the circulating air. However, when the temperature inside the room 10 rises and the deviation between the detected temperature and the set temperature reaches the set deviation set by the refrigeration thermostat 18 or more, the compressor 1 is started.
上記従来の装置においては、冷凍時には圧縮機
１の運転・停止を繰返して温度を制御するが、冷
蔵時には弁５の開度を無段階に増減して冷却能力
を無段階に減増し、室温の変動巾を可能な限り小
さくなるよう制御している。従つて、工業製品の
冷蔵時等さ程厳しい温度管理を要しない場合にも
常時時圧縮機１を運転しているため圧縮機１を駆
動するためのエネルギーが消費されるので、エネ
ルギー消費効率が極めて悪いという不具合があつ
た。 In the above-mentioned conventional device, during refrigeration, the compressor 1 is repeatedly started and stopped to control the temperature, but during refrigeration, the opening degree of the valve 5 is steplessly increased/decreased to steplessly increase/decrease the cooling capacity. The range of fluctuation is controlled to be as small as possible. Therefore, even in cases where strict temperature control is not required, such as when refrigerating industrial products, the compressor 1 is constantly running, and energy is consumed to drive the compressor 1, which reduces energy consumption efficiency. There was a problem that was extremely bad.
本発明は、上記不具合に対処するため、圧縮機
を連続運転しながら冷却能力を無段階に調整して
温度制御を行なう容量制御機能を具備すると共
に、圧縮機をオン・オフ運転して温度制御を行な
うオン・オフ制御機能を具備した冷却装置と加熱
装置とを備え、両装置により室内の温度を冷凍条
件から冷蔵条件にわたる広範囲の温度範囲の中で
設定温度に制御する温度制御装置において、設定
温度が冷蔵条件のとき、前記冷蔵装置の能力を、
熱負荷に応じて圧縮機を連続運転しながら、容量
制御により無段階に調整して高精度に温度制御す
る制御方法と、前記冷却装置及び加熱装置をオ
ン・オフ運転して省エネルギー化を図りつつ温度
制御する制御方法とのいずれかを選択可能な温度
制御方法選択手段を有することを特徴とする温度
制御装置を提供することを目的とするものであ
る。 In order to deal with the above-mentioned problems, the present invention has a capacity control function that performs temperature control by steplessly adjusting the cooling capacity while continuously operating the compressor, and also controls temperature by operating the compressor on and off. A temperature control device that is equipped with a cooling device and a heating device that have an on/off control function to control the indoor temperature to a set temperature within a wide temperature range from freezing conditions to refrigeration conditions. When the temperature is under refrigeration conditions, the capacity of the refrigeration device is
A control method that continuously operates the compressor according to the heat load and continuously adjusts the temperature using capacity control to control the temperature with high precision, and operates the cooling device and heating device on and off to save energy. It is an object of the present invention to provide a temperature control device characterized by having a temperature control method selection means that can select one of the control methods for temperature control.
以下、本発明を第２図に示す１実施例を参照し
ながら具体的に説明する。第２図におては、２３
は第２冷蔵用サーモスタツト、２７は制御方法選
択スイツチで、フイルム、電気製品等の工業製品
を室１０内に格納するときはこれを操作して省エ
ネ制御を選択し、果実、チルドビーフ等の農産物
を格納するときには精密制御を選択する。省エネ
制御を選択したときは、これからの信号を受けて
サーモスタツト選択手段１７は第２冷蔵用サーモ
スタツト２３を選択すると同時に温度検知器選択
手段１４は温度検知器８および９の双方の検出温
度を選択する。精密制御を選択したときは、これ
からの信号を受けてサーモスタツト選択手段１７
は冷蔵用サーモスタツト１８を選択すると同時に
温度検知器選択手段１４は温度検知器９を選択す
る。他の構成、機能は第１図に示す従来のものと
同様であり、同一の機能を果す部品には第１図の
符号と同一の符号を付し、その説明は省略する。
従つて、冷凍品の貯蔵品及び農産品を室１０内に
格納して０℃近辺にて冷蔵保管する場合で、温度
設定手段１５で設定温度０℃が設定され、制御方
法選択スイツチ２７で精密制御を選択した時の機
能は第１図に例示したものと同じであり、その説
明は省略する。 The present invention will be specifically described below with reference to an embodiment shown in FIG. In Figure 2, 23
27 is a second refrigeration thermostat, and 27 is a control method selection switch.When storing industrial products such as films and electrical products in the room 10, this is operated to select energy saving control, and 27 is a control method selection switch. Choose precision control when storing produce. When energy saving control is selected, the thermostat selection means 17 selects the second refrigeration thermostat 23 in response to this signal, and at the same time the temperature sensor selection means 14 selects the detected temperatures of both temperature sensors 8 and 9. select. When precision control is selected, the thermostat selection means 17 receives the upcoming signal.
selects the refrigerating thermostat 18, and at the same time the temperature sensor selection means 14 selects the temperature sensor 9. The other configurations and functions are the same as the conventional one shown in FIG. 1, and parts that perform the same functions are designated by the same reference numerals as those in FIG. 1, and their explanations will be omitted.
Therefore, when stored frozen products and agricultural products are stored in the chamber 10 and stored refrigerated at around 0°C, the set temperature is set to 0°C by the temperature setting means 15, and the control method selection switch 27 is used to precisely control the setting temperature. The functions when control is selected are the same as those illustrated in FIG. 1, and their explanation will be omitted.
フイルム、電気製品等の工業製品を室１０内に
格納して例えば20℃近辺で冷蔵保管する場合、温
度設定手段１５で設定温度20℃が設定され、制御
方法選択スイツチ２７で省エネ制御を選択する。
すると、これからの信号により温度検知器選択手
段１４は温度検知器８および９を選択し、サーモ
スタツト選択手段１７は第２冷蔵用サーモスタツ
ト２３を選択する。偏差算出装置１６では温度検
知器８の検出温度と設定温度即ち20℃との偏差が
算出される一方、温度検知器８の検出温度と温度
検知器９の検出温度との差も算出される。偏差算
出装置１６にて算出された温度検知器８の検出温
度と設定温度20℃との偏差が第二冷蔵用サーモス
タツト２３に設定されている所定の偏差を上回る
時運転指示装置２５の指示により圧縮機１が運転
を開始し、蒸発器４にて室１０を循環する空気が
冷却されることは上記従来のものと同じである。
この冷却作用の結果、温度検知器８の検出温度と
設定温度２０℃との偏差が、冷蔵用サーモスタツ
ト１８に設定されている所定の偏差まで降下する
と運転指示装置２５は弁５に対して開弁の指令を
行ない冷却能力が削減される。弁５の開度は運転
指示装置２５により、偏差算出装置１６にて算出
される温度検知器９の検出温度と、温度検知器８
の検出温度との差が所定の値となるように比例制
御が行なわれる。かくして、熱負荷の代小によら
ず削減された所定の冷却能力で運転が行なわれる
室１０の温度は更に降下する。その結果、温度検
知器８の検出温度と設定温度20℃との偏差が第二
冷蔵用サーモスタツト２３に設定されている値、
例えば零となると、運転指示装置２５は圧縮器１
の運転を停止するように指令すると共に、弁５に
対しては閉弁の指令を行なう。この圧縮機１の停
止の間において送風機１２の作動のための動力
や、外部からの室１０内への熱浸入等により室１
０の温度が上昇し、温度検知器８の検出温度と設
定温度２０℃との偏差が第二冷蔵用サーモスタツ
ト２３に設定されている偏差を上回ると運転指示
装置２５は圧縮機１に再度運転開始を指令すると
共に、弁５に対して開弁の指示を行ない、削減さ
れた所定の冷却能力での冷却運転が再開される。
以上の作用の繰り返しにより室１０の温度はほぼ
一定に保持されることとなる。一方、外気温度が
低下した場合など圧縮機１の停止しているのに更
に室１０の温度が低下するような時で温度検知器
８の検出温度と設定温度20℃との偏差が第二冷蔵
用サーモスタツト２３に設定されている負の偏差
を下回り更に負側となる場合には、ヒータ１１へ
通電が開始され、ヒータ１１への通電と送風機１
２の運転による加熱運転が行なわれる。この加熱
運転の結果、温度検知器８の検出温度と設定温度
20℃との偏差が、第二冷蔵用サーモスタツト２３
に設定されている所定の偏差を上回るとヒータ１
１への通電は停止される。以上の動作の結果室１
０はほぼ一定の温度に保持されることとなる。 When industrial products such as films and electrical products are stored in the chamber 10 and stored in a refrigerator at, for example, around 20°C, the temperature setting means 15 sets a set temperature of 20°C, and the control method selection switch 27 selects energy saving control. .
Then, the temperature sensor selection means 14 selects the temperature sensors 8 and 9 based on the signals from this, and the thermostat selection means 17 selects the second refrigeration thermostat 23. The deviation calculation device 16 calculates the deviation between the temperature detected by the temperature sensor 8 and the set temperature, that is, 20° C., and also calculates the difference between the temperature detected by the temperature sensor 8 and the temperature detected by the temperature sensor 9. When the deviation between the detected temperature of the temperature detector 8 calculated by the deviation calculation device 16 and the set temperature of 20°C exceeds a predetermined deviation set in the second refrigeration thermostat 23, according to the instruction from the operation instruction device 25. The compressor 1 starts operating and the air circulating in the chamber 10 is cooled by the evaporator 4, as in the conventional system.
As a result of this cooling action, when the deviation between the temperature detected by the temperature sensor 8 and the set temperature of 20°C falls to a predetermined deviation set in the refrigeration thermostat 18, the operation instruction device 25 opens the valve 5. Commands the valves to reduce cooling capacity. The opening degree of the valve 5 is determined by the operation instruction device 25 based on the detected temperature of the temperature sensor 9 calculated by the deviation calculation device 16 and the temperature sensor 8.
Proportional control is performed so that the difference between the detected temperature and the detected temperature becomes a predetermined value. In this way, the temperature of the chamber 10, which is operated with a reduced predetermined cooling capacity, will further drop regardless of the thermal load. As a result, the deviation between the temperature detected by the temperature detector 8 and the set temperature of 20°C is the value set in the second refrigeration thermostat 23.
For example, when it becomes zero, the operation instruction device 25
At the same time, the valve 5 is commanded to close. While the compressor 1 is stopped, the power for operating the blower 12, heat intrusion from the outside into the chamber 10, etc.
0 rises and the deviation between the temperature detected by the temperature detector 8 and the set temperature of 20°C exceeds the deviation set in the second refrigeration thermostat 23, the operation instruction device 25 causes the compressor 1 to operate again. At the same time as commanding the start, an instruction is given to the valve 5 to open the valve, and the cooling operation is restarted at the reduced predetermined cooling capacity.
By repeating the above actions, the temperature of the chamber 10 is maintained substantially constant. On the other hand, when the temperature in the chamber 10 further decreases even though the compressor 1 is stopped, such as when the outside air temperature decreases, the deviation between the temperature detected by the temperature detector 8 and the set temperature of 20° C. When the negative deviation is lower than the negative deviation set in the thermostat 23 and becomes further negative, energization to the heater 11 is started;
Heating operation is performed by operation No. 2. As a result of this heating operation, the detected temperature and set temperature of temperature sensor 8 are determined.
The deviation from 20℃ is the second refrigeration thermostat 23.
When the deviation exceeds the predetermined deviation set in
1 is stopped. Result room 1 of the above actions
0 is maintained at a substantially constant temperature.
しかして、上記実施例においては、制御方法選
択スイツチにより冷蔵時には精密制御の他に省エ
ネ制御を選択できるようにし、精密制御を選択し
たときは圧縮機の運転を継続しながら弁の開度を
熱負荷即ち検出温度と設定温度との偏差に応じて
無段階に調整し室温を目標温度に近接した極めて
狭い温度変動巾に維持し高精度の温度制御ができ
る。一方、省エネ制御を選択したとき、圧縮機の
運転・停止を繰返し、圧縮機の運転中は熱負荷の
大小によらずして弁の開度を吹き出し空気温度と
戻り空気温度との差が一定となるよう即ち削減さ
れた所定の冷却能力になるように調節して省エネ
ルギーの温度制御をすることができる。 Therefore, in the above embodiment, the control method selection switch allows the selection of energy-saving control in addition to precision control during refrigeration, and when precision control is selected, the opening degree of the valve is changed by heat while continuing to operate the compressor. Highly accurate temperature control is possible by steplessly adjusting according to the load, that is, the deviation between the detected temperature and the set temperature, and maintaining the room temperature within an extremely narrow temperature fluctuation range close to the target temperature. On the other hand, when energy saving control is selected, the compressor is repeatedly started and stopped, and while the compressor is operating, the difference between the blowing air temperature and the return air temperature is constant regardless of the size of the heat load. In other words, it is possible to perform energy-saving temperature control by adjusting the cooling capacity to a predetermined reduced cooling capacity.
またこの圧縮機１の発停を伴なう温度管理を行
なう場合でも吹き出し空気７の温度の管理も行な
われることとなり室１０の局所的な冷えすぎや、
温度ばらつきが大きくなることを防止できる一
方、圧縮機１の発停頻度を抑えることができ、圧
縮機１の寿命の増大にも効果がある。 Furthermore, even when temperature control involves turning on and off the compressor 1, the temperature of the blown air 7 is also controlled, so that the room 10 may become too cold locally.
While it is possible to prevent temperature variations from increasing, it is also possible to suppress the frequency of starting and stopping the compressor 1, which is also effective in increasing the life of the compressor 1.
なお、上記実施例においては第二冷蔵用サーモ
スタツト２２の使用時において弁５の開度は、温
度検知器８及び９の検出温度の差が一定となるよ
う比例制御したが、これは必ずしも一定の温度差
である必要はなく、圧縮機１の発停及び弁５の開
閉の指示は戻り空気６の温度を検知する温度検知
器８の検出温度を用いて行ない、冷却装置の冷却
能力の制御にあたつては吹き出し空気７の温度を
検知する温度検知器９の検出温度が、設定温度よ
りも所定温度だけ低くなるように弁５の開度の調
整を行なつてもよく、単に、局所的な冷えすぎや
温度ばらつきを抑え、圧縮機１の発停頻度をも抑
えるのみであれば弁５の開度を一定の値とするこ
とも可能である。更に言えば、冷却能力制御を必
ずしも必要とするわけではないこともあり、この
時は弁５に対し開弁の指令が行なわれなくてもよ
い。 In the above embodiment, when the second refrigeration thermostat 22 is used, the opening degree of the valve 5 is proportionally controlled so that the difference between the temperatures detected by the temperature detectors 8 and 9 is constant, but this is not necessarily constant. There is no need to be a temperature difference of In this case, the opening degree of the valve 5 may be adjusted so that the temperature detected by the temperature detector 9 that detects the temperature of the blown air 7 is lower than the set temperature by a predetermined temperature. It is also possible to set the opening degree of the valve 5 to a constant value if only to suppress excessive cooling and temperature variations, and to suppress the frequency of starting and stopping the compressor 1. Furthermore, since cooling capacity control may not necessarily be necessary, the command to open the valve 5 may not be issued at this time.
また、上記実施例においては温度制御に用いる
温度検知器の検出温度を常に一方のみとしたが、
これは温度検知器８及び９の検出温度の比較演算
結果、例えば高い方の値とか低い方の値、更にま
た両者の平均値等を用いることも可能であり単に
一方のみを温度制御に用いるのとの併用も可能で
ある。 In addition, in the above embodiment, only one temperature was detected by the temperature sensor used for temperature control; however,
This can be done by using the comparison calculation results of the temperatures detected by the temperature detectors 8 and 9, such as the higher value, lower value, or even the average value of both, so it is possible to use only one of them for temperature control. It is also possible to use it in combination with
また、上記実施例では冷却装置の冷却能力制御
を行なう例として、ホツトガスのバイパス量を制
御する例を示したが、これに代えて蒸発器４と圧
縮機１の間に弁を設けたり、絞り装置を可変とし
て循環冷媒量の制御を行なつて冷却能力を制御し
てもよく、また、圧縮機１そのものの容量制御を
行なつてもよい。 Furthermore, in the above embodiment, as an example of controlling the cooling capacity of the cooling device, an example was shown in which the bypass amount of hot gas was controlled, but instead of this, a valve may be provided between the evaporator 4 and the compressor 1, or a The cooling capacity may be controlled by making the device variable and controlling the amount of circulating refrigerant, or the capacity of the compressor 1 itself may be controlled.
更に、上記実施例では冷凍時と省エネ冷蔵時の
制御動作が互いに異なる例を示したが、同じ制御
動作であつても構わない。 Further, in the above embodiment, an example is shown in which the control operations during freezing and during energy-saving refrigeration are different from each other, but the control operations may be the same.
更に、上記実施例では弁５を１つだけ用いた例
を示したが２つ以上の弁を設け、使い分けするこ
とも可能である。 Further, although the above embodiment shows an example in which only one valve 5 is used, it is also possible to provide two or more valves and use them properly.
また、上記実施例では冷蔵時の制御動作を２通
りとしたが、必ずしも２通りである必要はなく更
に多くの制御動作をさせても良く、また冷凍時に
ついても複数の制御動作をさせてもよい。 Further, in the above embodiment, there are two types of control operations during refrigeration, but it is not necessary that there are two types of control operations, and more control operations may be performed, and multiple control operations may also be performed during freezing. good.
更に、上記実施例では物品を格納する室内空気
の温度を制御したがこれに限らず本発明は加熱装
置または冷却装置によつて加熱または冷却される
客体温度制御に広く適用できる。 Further, in the above embodiment, the temperature of the indoor air in which the article is stored is controlled, but the present invention is not limited to this, and the present invention can be widely applied to temperature control of an object heated or cooled by a heating device or a cooling device.
第１図は従来の冷凍コンテナーの温度制御装置
の１例を示す系統図、第２図は本発明を冷凍コン
テナーの温度制御装置に適用した場合の１実施例
を示す系統図である。
冷却加熱装置……１，２，３，４，５，１１、
客体……６，７、温度制御方法選択手段……２
７。
FIG. 1 is a system diagram showing an example of a conventional temperature control device for a refrigerated container, and FIG. 2 is a system diagram showing an embodiment in which the present invention is applied to a temperature control device for a refrigerated container. Cooling and heating device...1, 2, 3, 4, 5, 11,
Object...6,7, Temperature control method selection means...2
7.
Claims (1)
に調整して温度制御を行なう容量制御機能を具備
すると共に、圧縮機をオン・オフ運転して温度制
御を行なうオン・オフ制御機能を具備した冷却装
置と加熱装置とを備え、両装置により室内の温度
を冷凍条件から冷蔵条件にわたる広範囲の温度範
囲の中で設定温度に制御する温度制御装置におい
て、設定温度が冷蔵条件のとき、前記冷却装置の
能力を、熱負荷に応じて圧縮機を連続運転しなが
ら、定量制御により無段階に調整して高精度に温
度制御する制御方法と、前記冷却装置及び加熱装
置をオン・オフ運転して省エネルギー化を図りつ
つ温度制御する制御方法とのいずれかを選択可能
な温度制御方法選択手段を有することを特徴とす
る温度制御装置。1 Equipped with a capacity control function that performs temperature control by steplessly adjusting the cooling capacity while operating the compressor continuously, as well as an on/off control function that controls temperature by operating the compressor on and off. In a temperature control device that includes a cooling device and a heating device, and uses both devices to control the indoor temperature to a set temperature within a wide temperature range ranging from freezing conditions to refrigeration conditions, when the set temperature is in the refrigeration condition, the cooling device A control method that continuously operates the compressor according to the heat load and continuously adjusts the temperature using quantitative control to control the temperature with high precision, and saves energy by turning on and off the cooling device and heating device. 1. A temperature control device characterized by having a temperature control method selection means that can select one of the control methods for temperature control while controlling the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12101983A JPS6014074A (en) | 1983-07-05 | 1983-07-05 | Method of controlling temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12101983A JPS6014074A (en) | 1983-07-05 | 1983-07-05 | Method of controlling temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6014074A JPS6014074A (en) | 1985-01-24 |
| JPH056109B2 true JPH056109B2 (en) | 1993-01-25 |
Family
ID=14800789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12101983A Granted JPS6014074A (en) | 1983-07-05 | 1983-07-05 | Method of controlling temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6014074A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0623637B2 (en) * | 1985-03-11 | 1994-03-30 | 日立冷熱株式会社 | Cooling room temperature control method |
| JP2548585B2 (en) * | 1987-12-04 | 1996-10-30 | 日本建鐵株式会社 | Cooling room temperature control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57107914A (en) * | 1980-12-26 | 1982-07-05 | Nippon Denso Co Ltd | Air conditioning controller for car |
| JPS5864437A (en) * | 1981-10-14 | 1983-04-16 | Nippon Denso Co Ltd | Control on refrigerating cycle |
| JPS5867513A (en) * | 1981-10-19 | 1983-04-22 | Nissan Motor Co Ltd | Automobile's air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754411Y2 (en) * | 1978-05-02 | 1982-11-25 |
-
1983
- 1983-07-05 JP JP12101983A patent/JPS6014074A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57107914A (en) * | 1980-12-26 | 1982-07-05 | Nippon Denso Co Ltd | Air conditioning controller for car |
| JPS5864437A (en) * | 1981-10-14 | 1983-04-16 | Nippon Denso Co Ltd | Control on refrigerating cycle |
| JPS5867513A (en) * | 1981-10-19 | 1983-04-22 | Nissan Motor Co Ltd | Automobile's air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6014074A (en) | 1985-01-24 |
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