JPH0526457Y2 - - Google Patents
Info
- Publication number
- JPH0526457Y2 JPH0526457Y2 JP1987068666U JP6866687U JPH0526457Y2 JP H0526457 Y2 JPH0526457 Y2 JP H0526457Y2 JP 1987068666 U JP1987068666 U JP 1987068666U JP 6866687 U JP6866687 U JP 6866687U JP H0526457 Y2 JPH0526457 Y2 JP H0526457Y2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- air
- refrigerator
- blower
- cooler
- 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 28
- 238000001816 cooling Methods 0.000 description 21
- 239000003507 refrigerant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ONPGOSVDVDPBCY-CQSZACIVSA-N 6-amino-5-[(1r)-1-(2,6-dichloro-3-fluorophenyl)ethoxy]-n-[4-(4-methylpiperazine-1-carbonyl)phenyl]pyridazine-3-carboxamide Chemical compound O([C@H](C)C=1C(=C(F)C=CC=1Cl)Cl)C(C(=NN=1)N)=CC=1C(=O)NC(C=C1)=CC=C1C(=O)N1CCN(C)CC1 ONPGOSVDVDPBCY-CQSZACIVSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は冷凍コンテナ等の冷凍装置の制御装置
に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a control device for a refrigeration device such as a refrigerated container.
（従来の技術）
従来のこの種装置の１例が第６図に示されてい
る。１０は冷蔵庫で、この中に冷蔵又は冷凍しな
がら輸送すべき荷物１２が格納される。圧縮機１
を駆動することによつてこの圧縮機１から吐出さ
れた高温・高圧の冷媒ガスは実線矢印で示すよう
に凝縮機２に入り、ここで冷却されることにより
凝縮液化して高温・高圧の冷媒液となる。次い
で、この冷媒液は膨張弁３に入って絞られること
により断熱膨張して低温・低圧の気液二相とな
る。次いで、この気液二相の冷媒は冷却器４に入
り、ここで送風機１１により循環せしめられる庫
内空気を冷却することによつて蒸発気化して低
温・低圧の冷媒ガスとなつて圧縮機１に戻る。(Prior Art) An example of a conventional device of this type is shown in FIG. Reference numeral 10 denotes a refrigerator, in which cargo 12 to be transported is stored while being refrigerated or frozen. Compressor 1
The high-temperature, high-pressure refrigerant gas discharged from the compressor 1 enters the condenser 2 as shown by the solid line arrow, where it is cooled and condensed into liquefaction to form a high-temperature, high-pressure refrigerant. It becomes a liquid. Next, this refrigerant liquid enters the expansion valve 3 and is throttled to undergo adiabatic expansion and become a gas-liquid two-phase at low temperature and low pressure. Next, this gas-liquid two-phase refrigerant enters the cooler 4, where it evaporates by cooling the air inside the refrigerator circulated by the blower 11 and becomes a low-temperature, low-pressure refrigerant gas, which is then sent to the compressor 1. Return to
この冷凍装置の冷却能力を低減する場合には弁
５を開く。すると、圧縮機１から吐出された高
温・高圧の冷媒ガスの一部が弁５を通つて冷却器
４に入り冷却器４の冷却能力を低減する。そし
て、この冷却能力は弁５の開度を適宜加減するこ
とによつて無段階に調節することができる。 When reducing the cooling capacity of this refrigeration system, valve 5 is opened. Then, a part of the high temperature and high pressure refrigerant gas discharged from the compressor 1 enters the cooler 4 through the valve 5 and reduces the cooling capacity of the cooler 4. This cooling capacity can be adjusted steplessly by appropriately adjusting the opening degree of the valve 5.
庫内空気は送風機１１により冷却器４を経て循
環し、冷却器４から吹き出される吹出空気７は冷
蔵庫１０及び荷物１２と熱交換して昇温した後、
戻り空気６となつて送風機１１に吸い込まれて付
勢され、再び冷却器４に流入する。 The air inside the refrigerator is circulated by the blower 11 via the cooler 4, and the blown air 7 blown out from the cooler 4 exchanges heat with the refrigerator 10 and the luggage 12 to raise its temperature.
The return air 6 is sucked into the blower 11, energized, and flows into the cooler 4 again.
戻り空気６の温度を検出する第１温検知器８及
び吹出空気７の温度を検出する第２温度検知器９
の出力は制御装置３０の温度検知器選択手段１３
に入力される。温度検知器選択手段１３は温度設
定手段１４からの信号を受けて温度設定手段に設
定された設定温度が冷蔵条件のときは第２温度検
知器９の検出温度う選択し、設定温度が冷凍条件
のときは第１温度検知器８の検出温度を選択す
る。ここで選択された第１温度検知器８又は第２
温度検知器９の検出温度のいずれか一方が偏差算
出手段１５に入り、ここで温度設定手段１４から
入力された設定温度と対比されて両者の偏差が算
出され、この偏差は比較手段２３に入力される。
一方、温度設定手段１４に設定された設定温度は
サーモスタツト選択手段１６に入力され、ここで
設定温度が冷蔵条件のときは冷蔵用サーモスタツ
ト２０が選択され、設定温度が冷凍条件のときは
冷凍用サーモスタツト２１が選択される。そし
て、ここで選択されたサーモスタツト２０又は２
１のいずれか一方の出力が比較手段２３に入力さ
れる。比較手段２３では偏差算出手段１５から入
力された偏差とサーモスタツト選択手段１６が選
択されたサーモスタツト２０は２１に設定された
偏差とを比較する。運転指示手段２２は比較手段
２３からの信号を受けて選択されたサーモスタツ
ト２０又は２１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、送風機１１を運転
するための指令を出力する。 A first temperature sensor 8 that detects the temperature of the return air 6 and a second temperature sensor 9 that detects the temperature of the blown air 7
The output of the temperature sensor selection means 13 of the control device 30
is input. Upon receiving the signal from the temperature setting means 14, the temperature detector selection means 13 selects the detected temperature of the second temperature sensor 9 when the set temperature set in the temperature setting means is the refrigeration condition, and selects the detected temperature of the second temperature sensor 9 when the set temperature is the refrigeration condition. In this case, the temperature detected by the first temperature sensor 8 is selected. The first temperature sensor 8 or the second temperature sensor selected here
Either one of the temperatures detected by the temperature detector 9 enters the deviation calculating means 15, where it is compared with the set temperature input from the temperature setting means 14 to calculate the deviation between the two, and this deviation is input to the comparing means 23. be done.
On the other hand, the set temperature set in the temperature setting means 14 is input to the thermostat selection means 16, where when the set temperature is for refrigeration conditions, the refrigerating thermostat 20 is selected, and when the set temperature is for freezing conditions, the refrigeration thermostat 20 is selected. thermostat 21 is selected. Then, the thermostat 20 or 2 selected here
1 is input to the comparison means 23. The comparing means 23 compares the deviation inputted from the deviation calculating means 15 and the deviation set in the thermostat 21 selected by the thermostat selecting means 16. The operation instruction means 22 receives the signal from the comparison means 23 and issues a command to operate the compressor 1, valve 5, and blower 11 in a predetermined operation mode according to the selected operation pattern of the thermostat 20 or 21. Output.
しかして、温度設定手段１４に冷凍条件の温度
例えば−18℃を設定すると、ここからの信号によ
り温度検知器選択手段１３は第１温度検知器８を
選択し、サーモスタツト選択手段１６は冷凍用サ
ーモスタツト２１を選択する。そして第１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１４に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手段１５で算出
されて比較手段２３に入力され、ここで冷凍用サ
ーモスタツト２１に設定された偏差と比較され
る。そして、前者が後者以上である場合は、冷凍
用サーモスタツト２１の動作パターンに従つて運
転指示手段２２からの指令により圧縮機１、送風
機１１を起動して、冷蔵庫１０内空気を矢印方向
に循環せしめる過程で冷却器４によつて冷却す
る。 When the temperature setting means 14 is set to the temperature of the freezing condition, for example -18°C, the temperature sensor selection means 13 selects the first temperature sensor 8 based on the signal from there, and the thermostat selection means 16 selects the first temperature sensor 8. Select thermostat 21. When the detected temperature of the return air 6 detected by the first temperature detector 8 is higher than the set temperature set in the temperature setting means 14, that is, -18°C, this deviation is calculated by the deviation calculating means 15 and the comparison means 23 , and is compared with the deviation set in the refrigeration thermostat 21. If the former is greater than or equal to the latter, the compressor 1 and the blower 11 are activated by a command from the operation instruction means 22 according to the operation pattern of the refrigeration thermostat 21, and the air inside the refrigerator 10 is circulated in the direction of the arrow. During the cooling process, it is cooled by a cooler 4.
この冷却運転の結果、戻り空気６の温度が低下
し、検出温度と設定温度との偏差が冷凍用サーモ
スタツト２１に設定されている偏差以下になる
と、運転指示手段２２からの指令により圧縮機１
は停止し、以後、圧縮機１の起動及び停止を繰り
返すことにより戻り空気６の温度は、温度設定手
段１４に設定された設定温度−18℃に維持され
る。この冷却運転時の吹出空気７の温度は戻り空
気６の温度より低いため、吹出空気７に当たる荷
物１２の温度は設定温度−18℃より実際は低めの
温度となる。 As a result of this cooling operation, when the temperature of the return air 6 decreases and the deviation between the detected temperature and the set temperature becomes equal to or less than the deviation set in the refrigeration thermostat 21, a command from the operation instruction means 22 causes the compressor 1 to
Thereafter, by repeatedly starting and stopping the compressor 1, the temperature of the return air 6 is maintained at -18° C., the set temperature set in the temperature setting means 14. Since the temperature of the blown air 7 during this cooling operation is lower than the temperature of the return air 6, the temperature of the cargo 12 that is hit by the blown air 7 is actually lower than the set temperature of -18°C.
一方、温度設定手段１４に冷蔵条件の温度例え
ば０℃を設定した場合、温度検知器選択手段１３
は第２温度検知器９を選択し、サーモスタツト選
択手段１６は冷蔵用サーモスタツト２０を選択す
る。第２温度検知器９で検出した吐出空気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２０に設
定されている偏差より大きいときは運転指示手段
２２からの指令により圧縮機１及び送風機１１を
起動して空気を冷却する。冷蔵庫１０内の温度が
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２０に設定されている偏差以下に
なると、運転指示手段２２からの指令により弁５
が開弁し、冷却器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
転指示手段２２からの指令によつて加減して、冷
却器４の冷却能力を調節することにより吹出空気
７の温度は温度設定手段１４に設定された設定温
度０℃に維持される。 On the other hand, when the temperature setting means 14 is set to the temperature of the refrigeration condition, for example, 0°C, the temperature detector selection means 13
selects the second temperature sensor 9, and the thermostat selection means 16 selects the refrigerator thermostat 20. When the detected temperature of the discharged air 7 detected by the second 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 20, the operation instruction means 22 The compressor 1 and the blower 11 are started in response to a command from the controller to cool the air. When the temperature inside the refrigerator 10 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 20, the valve 5 is closed by a command from the operation instruction means 22.
opens, reducing the cooling capacity of the cooler 4. Thereafter, while continuing to operate the compressor 1, the opening degree of the valve 5 is adjusted according to commands from the operation instruction means 22 to adjust the cooling capacity of the cooler 4, thereby adjusting the temperature of the blown air 7 to the temperature setting means. The set temperature set at 14 is maintained at 0°C.
この冷蔵運転時の戻り空気６の温度は吹出空気
７の温度より高いため、戻り空気６に接する荷物
１２の温度は設定温度より高めの温度となる。 Since the temperature of the return air 6 during this refrigeration operation is higher than the temperature of the blown air 7, the temperature of the baggage 12 in contact with the return air 6 is higher than the set temperature.
（考案が解決しようとする問題点）
上記従来の装置においては庫内空気は送風機１
１によつて一定方向に循環せしめられるので、冷
却器４から吹き出された冷たい吹出空気７に当た
る荷物１２の温度と、冷蔵庫１０及び荷物１２と
熱交換して昇温した戻り空気６に接する荷物１２
の温度との間に大きな差が出て、荷物１２の種類
によつてはその商品価値を失うという不具合があ
つた。(Problem to be solved by the invention) In the above conventional device, the air inside the refrigerator is supplied by the blower 1.
1 circulates in a fixed direction, so the temperature of the baggage 12 that is in contact with the cold air 7 blown out from the cooler 4, and the temperature of the baggage 12 that is in contact with the return air 6 that has heated up by exchanging heat with the refrigerator 10 and the baggage 12.
There was a problem that there was a large difference between the temperature of the baggage 12 and the baggage 12, and depending on the type of baggage 12, the product value was lost.
（問題点を解決するための手段）
本考案は上記問題点に対処するために提案され
たものであつて、その要旨とするところは、庫内
空気を冷却する冷却器と、同冷却器を経て庫内空
気を循環させる送風機と、前記冷却器への戻り空
気温度を検出する第１温度検知器と、前記冷却器
からの吹出空気温度を検出する第２温度検知器と
を備え、設定温度に応じて選択された前記第１又
は第２温度検知器の検出温度が前記設定温度とな
るよう運転制御する冷凍装置の制御装置におい
て、前記送風機を正逆回転送風機とし、予め定め
た所定条件が充足されたとき前記正逆回転送風機
の回転方向を切換えて庫内空気の循環方向を切換
える手段を設けるとともに前記正逆回転送風機の
回転方向を切換えると同時に前記第１又は第２温
度検知機の選択を切換える手段を設けたことを特
徴とする冷凍装置の制御装置にある。(Means for solving the problem) The present invention was proposed to solve the above problem, and its gist is to provide a cooler for cooling the air inside the refrigerator, and a cooler for cooling the air inside the refrigerator. a blower that circulates the air inside the refrigerator, a first temperature detector that detects the temperature of the air returned to the cooler, and a second temperature detector that detects the temperature of the air blown out from the cooler, and a set temperature. In the control device for the refrigeration equipment, the operation of the refrigeration equipment is controlled so that the detected temperature of the first or second temperature sensor selected according to the set temperature becomes the set temperature, the blower being a forward/reverse transfer fan, Providing means for switching the direction of rotation of the forward/reverse transfer fan to change the circulation direction of the air in the refrigerator when the temperature is satisfied, and selecting the first or second temperature detector at the same time as switching the direction of rotation of the forward/reverse transfer fan. There is provided a control device for a refrigeration system, characterized in that a means for switching the refrigeration system is provided.
（作用）
本考案においては上記構成を具えているため、
予め定めた所定条件が充足されたとき正逆回転送
風機の回転方向を切換えることによつて庫内空気
の循環方向を切換えると同時に第１又は第２の温
度検知機の選択を切換え、切換え前と同じ戻り空
気又は吐出空気の検出温度が設定温度となるよう
冷凍装置の運転制御を継続する。(Function) Since the present invention has the above configuration,
When a predetermined condition is satisfied, the direction of circulation of the air in the refrigerator is changed by switching the rotation direction of the forward/reverse transfer fan, and at the same time, the selection of the first or second temperature detector is changed, and the selection of the first or second temperature detector is changed. Operation control of the refrigeration system is continued so that the detected temperature of the same return air or discharge air becomes the set temperature.
（実施例）
本考案の第１の実施例が第１図及び第２図に示
されている。(Embodiment) A first embodiment of the present invention is shown in FIGS. 1 and 2.
第１図はシステム構成図、第２図は制御装置の
フローチヤートである。 FIG. 1 is a system configuration diagram, and FIG. 2 is a flowchart of the control device.
第１図において、送風機が正逆回転可能な送風
機１１ａとされ、この送風機１１ａの正転時には
冷却器４で冷却された吹出空気７は白抜矢印で示
すように冷蔵庫１０内に流入し、冷蔵庫１０及び
荷物１２を冷却することによつて昇温した戻り空
気６は白抜矢印で示すように送風機１１ａに吸い
込まれる。そして、送風機１１ａの逆転時には、
冷却器４で冷却された吹出空気７ａは斜線入り矢
印で示すように冷蔵庫１０内に流入し、冷蔵庫１
０及び荷物１２を冷却することによつて昇温した
戻り空気６ａは斜線入り矢印で示すように送風機
１１ａに吸い込まれる。また、制御装置３０ａは
運転時間計数手段１７、回転方向切換手段１８を
具備している。正逆回転送風機１１ａはその起動
時回転方向切換手段１８の指令を受けて正転する
ようになつている。他の構成は第６図に示す従来
のものと同様であり、対応する部材には同じ符号
が付されている。 In FIG. 1, the blower is a blower 11a that can rotate in forward and reverse directions, and when the blower 11a rotates in the forward direction, the blown air 7 cooled by the cooler 4 flows into the refrigerator 10 as shown by the white arrow. The return air 6 whose temperature has increased by cooling the baggage 10 and the baggage 12 is sucked into the blower 11a as shown by the white arrow. Then, when the blower 11a is reversed,
The blown air 7a cooled by the cooler 4 flows into the refrigerator 10 as shown by the diagonal arrow, and the air 7a cools down into the refrigerator 10.
The return air 6a whose temperature has been increased by cooling the baggage 12 and the baggage 12 is sucked into the blower 11a as shown by the hatched arrow. Further, the control device 30a includes an operation time counting means 17 and a rotation direction switching means 18. The forward/reverse rotation transfer wind fan 11a is adapted to rotate forward in response to a command from the rotation direction switching means 18 at the time of startup. The rest of the structure is similar to the conventional one shown in FIG. 6, and corresponding members are given the same reference numerals.
制御装置３０ａは第２図に示すフローチヤート
に従つて作動する。 The control device 30a operates according to the flowchart shown in FIG.
温度設定手段１４によつて冷凍条件例えば−18
℃が設定されている場合には、温度設定手段１４
からの信号により温度検知器選択手段１３によつ
て第１温度検知器８が選択され、これと同時にサ
ーモスタツト選択手段１６によつて冷凍用サーモ
スタツト２１が選択される。第１温度検知器８に
よつて検出された戻り空気６の検出温度と温度設
定手段１４に設定された設定温度が偏差算出手段
１５に入力され、ここで両者の偏差が算出され
る。この偏差は比較手段２３に入力され、ここで
サーモスタツト選択手段１６で選択された冷凍用
サーモスタツト２１に設定されている偏差と比較
される。前者が後者より高い場合には運転指示手
段２２からの指令により圧縮機１及び送風機１１
ａが起動される。送風機１１ａは正方向に回転し
て、庫内空気は白抜矢印方向に循環し、冷却器４
を流過する過程で冷却される。 The temperature setting means 14 sets the freezing condition to -18, for example.
℃ is set, the temperature setting means 14
The first temperature sensor 8 is selected by the temperature sensor selection means 13 in response to a signal from the temperature sensor selection means 13, and at the same time, the refrigeration thermostat 21 is selected by the thermostat selection means 16. The detected temperature of the return air 6 detected by the first temperature detector 8 and the set temperature set in the temperature setting means 14 are input to the deviation calculating means 15, and the deviation between the two is calculated here. This deviation is input to the comparison means 23, where it is compared with the deviation set in the refrigeration thermostat 21 selected by the thermostat selection means 16. If the former is higher than the latter, the compressor 1 and the blower 11 are
a is activated. The blower 11a rotates in the forward direction, and the air inside the refrigerator circulates in the direction of the white arrow.
It is cooled in the process of flowing through it.
この冷却運転の結果、戻り空気６の温度が低下
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２１に設定されている偏差以下に低下す
ると、運転指示手段２２からの指令により圧縮機
１の運転が停止する。以後、圧縮機１の運転及び
停止を繰り返すことによつて戻り空気６の検出温
度が設定温度に維持される。 As a result of this cooling operation, when the temperature of the return air 6 decreases and the deviation between the detected temperature and the set temperature falls below the deviation set in the refrigeration thermostat 21, a command from the operation instruction means 22 causes the compressor to 1 operation stops. Thereafter, by repeatedly operating and stopping the compressor 1, the detected temperature of the return air 6 is maintained at the set temperature.
圧縮機１の運転及び停止を繰り返す冷却運転が
所定時間経過すると、運転時間計数手段１７から
計数終了の信号が出力され、この信号を受けた回
転方向切換手段１８からの指令により送風機１１
ａの回転方向を逆方向に切換える。これと同時に
運転時間計数手段１７から計数終了の信号を受け
た温度検知器選択手段１３は第２温度検知器９を
選択するので戻り空気６ａの検出温度が制御装置
３０ａに入力される。運転時間計数手段１７が計
数終了の信号を出力するとその計数はクリアさ
れ、再度所定時間の計数を開始する。以後、上記
を繰り返し、計数終了信号の都度送風機１１ａの
回転方向を切換えると同時に温度検知器の選択が
切換えられ、戻り空気６又は６ａの検出温度が制
御装置３０ａに入力される。 When the cooling operation in which the compressor 1 is repeatedly started and stopped has elapsed for a predetermined period of time, the operation time counting means 17 outputs a counting end signal, and the blower 11
Switch the rotation direction of a to the opposite direction. At the same time, the temperature detector selection means 13, which receives a signal from the operation time counting means 17 to end counting, selects the second temperature sensor 9, so that the detected temperature of the return air 6a is input to the control device 30a. When the operation time counting means 17 outputs a signal indicating the end of counting, the counting is cleared and counting of the predetermined time is started again. Thereafter, the above steps are repeated, and each time the counting end signal is received, the rotation direction of the blower 11a is switched, and at the same time, the selection of the temperature sensor is switched, and the detected temperature of the return air 6 or 6a is input to the control device 30a.
また、温度設定手段１４に冷蔵条件の設定温度
を設定したときは、これからの信号により温度検
知器選択手段１３が第２温度検知器９を選択し、
サーモスタツト選択手段１６は冷蔵用サーモスタ
ツト２０を選択する。第２温度検知器９で検出さ
れた吹出空気７の温度と温度設定手段１４に設定
された設定温度は偏差算出手段１５に入力され
て、ここで両者の偏差が算出される。そして、こ
の偏差と冷蔵用サーモスタト２０に設定された偏
差が比較手段２３に入力され、ここで両者の偏差
が比較される。そして、前者が後者より大きいと
きはこれからの信号を受けた運転指示手段２２が
圧縮機１及び送風機１１ａを起動する。そして、
送風機１１ａは回転方向切換手段１８の指令によ
り正方向に回転し、庫内空気は白抜矢印方向に循
環する。 Further, when the set temperature of the refrigeration condition is set in the temperature setting means 14, the temperature sensor selection means 13 selects the second temperature sensor 9 based on the signal from now on,
The thermostat selection means 16 selects the refrigeration thermostat 20. The temperature of the blown air 7 detected by the second temperature detector 9 and the set temperature set in the temperature setting means 14 are input to the deviation calculation means 15, and the deviation between them is calculated here. Then, this deviation and the deviation set in the refrigeration thermostat 20 are input to the comparison means 23, where the two deviations are compared. When the former is larger than the latter, the operation instruction means 22 that receives the signal starts the compressor 1 and the blower 11a. and,
The blower 11a rotates in the forward direction according to a command from the rotation direction switching means 18, and the air inside the refrigerator circulates in the direction of the white arrow.
この冷却運転の結果、庫内温度が降下して、吹
出空気７の検出温度と設定温度との偏差が冷蔵用
サーモスタツト２０に設定されている偏差より小
さくなると、運転指示手段２２からの指令により
弁５が開弁して冷却器４の冷却能力を低減する。
以後、圧縮機１の運転を継続しながら弁５の開度
を運転指示手段２２からの指令によつて調節する
ことにより吹出空気７の検出温度を設定温度に維
持する。 As a result of this cooling operation, when the temperature inside the refrigerator falls and the deviation between the detected temperature of the blown air 7 and the set temperature becomes smaller than the deviation set in the refrigeration thermostat 20, a command from the operation instruction means 22 is issued. Valve 5 opens to reduce the cooling capacity of cooler 4.
Thereafter, the detected temperature of the blown air 7 is maintained at the set temperature by adjusting the opening degree of the valve 5 according to a command from the operation instruction means 22 while continuing the operation of the compressor 1.
この冷却運転が所定時間継続すると、運転時間
計数手段１７が計数終了の信号を回転方向切換手
段１８及び温度検知器選択手段１３に出力する。
すると、回転方向切換手段１８は送風機１１ａの
回転方向を逆方向に切換えるので、庫内空気は斜
線矢印に示すように循環する。これと同時に温度
検知器選択手段１３が第１温度検知器８を選択す
るので、制御装置３０ａには吹出空気７ａの検出
温度が入力される。運転時間計数手段１７は計数
終了の信号を出力した後計数かクリアされ、再度
計数を開始する。以後、上記を繰り返して送風機
１１ａの回転方向及び温度検知器の選択を定期的
に交互に切換える。 When this cooling operation continues for a predetermined period of time, the operation time counting means 17 outputs a signal indicating the end of counting to the rotational direction switching means 18 and the temperature detector selection means 13.
Then, the rotation direction switching means 18 switches the rotation direction of the blower 11a to the opposite direction, so that the air in the refrigerator circulates as shown by the diagonal arrow. At the same time, the temperature sensor selection means 13 selects the first temperature sensor 8, so the detected temperature of the blown air 7a is input to the control device 30a. After the operation time counting means 17 outputs a signal indicating the end of counting, the counting is cleared and starts counting again. Thereafter, the above steps are repeated to periodically and alternately switch the rotation direction of the blower 11a and the selection of the temperature sensor.
上記第１の実施例においては、冷却運転が所定
時間継続したときに送風機１１ａの回転方向及び
温度検知器の選択を切換えているが、第３図ない
し第５図に示す第２の実施例に示すように戻り空
気の検出温と吹出空気の検出温度との差が所定値
以上になつたときに送風機１１ａの回転方向及び
温度検知器の選択を切換えるようにしても良い。 In the first embodiment described above, the rotation direction of the blower 11a and the selection of the temperature sensor are switched when the cooling operation continues for a predetermined period of time, but in the second embodiment shown in FIGS. As shown, when the difference between the detected temperature of the return air and the detected temperature of the blown air exceeds a predetermined value, the rotation direction of the blower 11a and the selection of the temperature sensor may be switched.
第３図に示すように、制御装置３０ｂは運転時
間計数手段１７に代えて回転方向切換えサーモス
タツト２４を具え、第１温度検知器８及び第２温
度検知器９の検出温度は温度検知器選択手段１３
と回転方向切換えサーモスタツト２４の双方に入
力される。この回転方向切換えサーモスタツト２
４は第５図に示すように、戻り空気と吹出空気の
温度差が＋1.5deg℃より大きくなると、切換え信
号を出力し、＋0.5deg℃より小さくなると切換え
信号を出力しないようになつている。 As shown in FIG. 3, the control device 30b includes a rotation direction switching thermostat 24 instead of the operating time counting means 17, and the detected temperatures of the first temperature sensor 8 and the second temperature sensor 9 are determined by temperature sensor selection. Means 13
and the rotation direction switching thermostat 24. This rotation direction switching thermostat 2
As shown in Figure 5, 4 outputs a switching signal when the temperature difference between the return air and the blowing air becomes greater than +1.5deg°C, and does not output a switching signal when it becomes less than +0.5deg°C. .
第４図には制御装置３０ｂのフローチヤートが
示され、これは戻り空気温度と吹出空気温度との
差が所定値以上になつたか否かを判断するように
した点で第２図に示すフローチヤートと異なり、
他は同様である。 FIG. 4 shows a flowchart of the control device 30b, which differs from the flowchart shown in FIG. Unlike chat,
Others are the same.
この第２図の実施例においては吹出空気の検出
温度と戻り空気の検出温度との差が所定値、即
ち、＋1.5deg℃以上になつたときに送風機１１ａ
の回転方向及び温度検知機の選択を切換えるた
め、この切換えによつて吹出空気の検出温度と戻
り空気の検出温度との差が−1.5deg℃となり、回
転方向切換えサーモスタツト２４が切換え信号を
出力しない条件、即ち、＋0.5deg℃より小さくな
るので、この状態で所定の冷却運転が継続され
る。そして、この冷却運転の継続によつて吹出口
空気の検出温度と戻り空気の検出温度との差が＋
1.5deg℃以上になると再び送風機１１ａの回転方
向を切換えると同時に温度検知器の選択を切換え
庫内温度を温度設定手段に設定された設定温度に
維持する。 In the embodiment shown in FIG. 2, when the difference between the detected temperature of the blown air and the detected temperature of the return air reaches a predetermined value, that is, +1.5 deg.
Since the rotation direction and the selection of the temperature detector are switched, the difference between the detected temperature of the blown air and the detected temperature of the return air becomes -1.5 degrees Celsius due to this switching, and the rotation direction switching thermostat 24 outputs a switching signal. Therefore, the predetermined cooling operation is continued in this state. As this cooling operation continues, the difference between the detected temperature of the outlet air and the detected temperature of the return air increases.
When the temperature exceeds 1.5 degrees Celsius, the rotation direction of the blower 11a is changed again, and at the same time, the selection of the temperature sensor is changed to maintain the temperature inside the refrigerator at the set temperature set in the temperature setting means.
（考案の効果）
本考案においては、送風機を正逆回転送風機と
し、予め定めた所定条件が充足されたとき前記正
逆回転送風機の回転方向を切換えて庫内空気の循
環方向を切換える手段を設けるとともち前記正逆
回転送風機の回転方向を切換えると同時に前記第
１又は第２温度検知器の選択を切換える手段を設
けたため、予め定めた所定条件が充足されたとき
正逆回転送風機の回転方向を切換えることによつ
て庫内空気の循環方向を切換えると同時に第１又
は第２の音検知器の選択を切換え、切換え前と同
じ戻り空気又は吹出空気の検出温度が設定温度と
なるよう冷凍装置の運転制御を継続する。(Effect of the invention) In the present invention, the blower is a forward/reverse transfer fan, and means is provided for switching the rotation direction of the forward/reverse transfer fan to switch the circulation direction of air in the refrigerator when a predetermined condition is satisfied. Since a means is provided for switching the selection of the first or second temperature sensor at the same time as switching the rotation direction of the forward/reverse transfer fan, the rotation direction of the forward/reverse transfer fan is changed when a predetermined condition is satisfied. By switching the direction of circulation of air in the refrigerator, the selection of the first or second sound detector is simultaneously switched, and the refrigeration equipment is adjusted so that the detected temperature of the return air or blow-out air becomes the set temperature, which is the same as before switching. Continue operating control.
この結果、庫内空気の温度分布が均一化され、
庫内の荷物と設定温度との差が小さくなるので、
荷物の商品価値の落下を未然に防止できる。 As a result, the temperature distribution of the air inside the refrigerator becomes uniform,
The difference between the contents inside the refrigerator and the set temperature will be smaller.
It is possible to prevent a drop in the product value of luggage.
第１図及び第２図は本考案の第１の実施例を示
し、第１図はシステム構成図、第２図は制御装置
のフローチヤートである。第３図ないし第５図は
本考案の第２の実施例を示し、第３図はシステム
構成図、第４図は制御装置のフローチヤート、第
５図は回転方向切換えサーモスタツトの動作説明
図である。第６図は従来の冷凍装置のシステム構
成図である。
冷蔵庫……１０、冷却器……４、送風機……１
１ａ、戻り空気……６，６ａ、第１温度検知器…
…８、吹出空気……７，７ａ、第２の温度検知器
……９、制御装置……３０ａ，３０ｂ、温度設定
手段……１４、回転方向切換手段……１８、温度
検知器切換手段……１３。
1 and 2 show a first embodiment of the present invention, FIG. 1 is a system configuration diagram, and FIG. 2 is a flowchart of a control device. 3 to 5 show a second embodiment of the present invention, FIG. 3 is a system configuration diagram, FIG. 4 is a flowchart of the control device, and FIG. 5 is an explanatory diagram of the operation of the rotation direction switching thermostat. It is. FIG. 6 is a system configuration diagram of a conventional refrigeration system. Refrigerator...10, cooler...4, blower...1
1a, return air...6, 6a, first temperature sensor...
...8, Blowing air...7, 7a, Second temperature sensor...9, Control device...30a, 30b, Temperature setting means...14, Rotation direction switching means...18, Temperature sensor switching means... ...13.
Claims (1)
庫内空気を循環させる送風機と、前記冷却器への
戻り空気温度を検出する第１温度検知器と、前記
冷却器からの吹出空気温度を検出する第２温度検
知器とを備え、設定温度に応じて選択された前記
第１又は第２温度検知器の検出温度が前記設定温
度となるよう運転制御する冷凍装置の制御装置に
おいて、前記送風機を正逆回転送風機とし、予め
定めた所定条件が充足されたとき前記正逆回転送
風機の回転方向を切換えて庫内空気の循環方向を
切換える手段う設けるとともに前記正逆回転送風
機の回転方向を切換えると同時に前記第１又は第
２温度検知器の選択を切換える手段を設けたこと
を特徴とする冷凍装置の制御装置。 A cooler that cools the air inside the refrigerator, a blower that circulates the air inside the refrigerator through the cooler, a first temperature detector that detects the temperature of the air returned to the cooler, and a temperature of the air blown out from the cooler. and a second temperature detector that detects the temperature, and controls the operation so that the detected temperature of the first or second temperature detector selected according to the set temperature becomes the set temperature, The blower is a forward/reverse transfer fan, and means is provided for switching the direction of rotation of the forward/reverse transfer fan to change the circulation direction of air in the refrigerator when a predetermined condition is satisfied. A control device for a refrigeration system, comprising means for switching the selection of the first or second temperature sensor at the same time as the switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987068666U JPH0526457Y2 (en) | 1987-05-08 | 1987-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987068666U JPH0526457Y2 (en) | 1987-05-08 | 1987-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63178781U JPS63178781U (en) | 1988-11-18 |
| JPH0526457Y2 true JPH0526457Y2 (en) | 1993-07-05 |
Family
ID=30908689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987068666U Expired - Lifetime JPH0526457Y2 (en) | 1987-05-08 | 1987-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526457Y2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8056349B2 (en) * | 2007-08-13 | 2011-11-15 | B/E Aerospace, Inc. | Method and apparatus for maintaining a uniform temperature in a refrigeration system |
| JP5852354B2 (en) * | 2011-08-05 | 2016-02-03 | アルトリスト株式会社 | freezer |
| JP5983982B2 (en) * | 2011-09-27 | 2016-09-06 | 東芝ライフスタイル株式会社 | refrigerator |
| JP6459494B2 (en) * | 2014-12-23 | 2019-01-30 | 株式会社デンソー | Temperature control storage device |
| JP6344232B2 (en) * | 2014-12-23 | 2018-06-20 | 株式会社デンソー | Temperature control storage device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184874A (en) * | 1981-05-06 | 1982-11-13 | Mitsubishi Heavy Ind Ltd | Cooling device |
| JPS58200973A (en) * | 1982-05-20 | 1983-11-22 | 三菱重工業株式会社 | Controller for temperature of refrigerator for heating and cooling |
-
1987
- 1987-05-08 JP JP1987068666U patent/JPH0526457Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57184874A (en) * | 1981-05-06 | 1982-11-13 | Mitsubishi Heavy Ind Ltd | Cooling device |
| JPS58200973A (en) * | 1982-05-20 | 1983-11-22 | 三菱重工業株式会社 | Controller for temperature of refrigerator for heating and cooling |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63178781U (en) | 1988-11-18 |
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