JPH06129758A - Data-recording method for refrigeration apparatus for container - Google Patents

Data-recording method for refrigeration apparatus for container

Info

Publication number
JPH06129758A
JPH06129758A JP30317992A JP30317992A JPH06129758A JP H06129758 A JPH06129758 A JP H06129758A JP 30317992 A JP30317992 A JP 30317992A JP 30317992 A JP30317992 A JP 30317992A JP H06129758 A JPH06129758 A JP H06129758A
Authority
JP
Japan
Prior art keywords
temperature
data
container
recording
specific range
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.)
Withdrawn
Application number
JP30317992A
Other languages
Japanese (ja)
Inventor
Akio Hasegawa
昭夫 長谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP30317992A priority Critical patent/JPH06129758A/en
Publication of JPH06129758A publication Critical patent/JPH06129758A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

PURPOSE:To reduce the capacity of a memory for recording the operation data relating to a refrigeration unit for a container by a method wherein, when a deviation of the temperature under control from a set point is within a specific range and the preceding record of the temperature under control is also within the specific range, the present data is substituted for the preceding data on record. CONSTITUTION:After an elapse of a specific time (e.g. one hour) when a refrigeration unit of a container is in normal operation, if the deviation shown by the present temperature from the point set for the temperature under control, such as the temperature of air blown out or the temperature of air drawn in, is within a specific range, it is determined whether the preceding temperature on record is within a specific range or not. If the temperature on record is within the specific range, the preceding data on record is cleared and the present data is recorded instead. If the present temperature under control at the time of the recording is outside the specific range, the present data at the time of the recording is committed to recording. This method helps to reduce data recorded during a single voyage of a container.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はコンテナ用冷凍ユニット
のデータ記録方式に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording system for a container refrigeration unit.

【0002】[0002]

【従来の技術】コンテナはその庫内に貨物を収容し、冷
凍ユニットを運転することによって庫内温度を設定温度
に維持しながら船舶、トラック、鉄道車両等に積載され
て運搬される。
2. Description of the Related Art A container stores cargo within its container and operates a refrigerating unit to keep the internal temperature of the container at a preset temperature and to carry it while being loaded on ships, trucks, rail cars and the like.

【0003】この種冷凍ユニットの1例が図2に示され
ている。冷凍ユニットを運転すると、圧縮機1から吐出
されたガス冷媒は凝縮器2に入り、ここで凝縮器用送風
機3によって送られる外気に放熱することによって凝縮
液化する。この液冷媒は電子膨張弁4で絞られることに
よって断熱膨張した後、蒸発器5に入り、ここで蒸発器
用送風機6によって送られる庫内空気を冷却することに
よって蒸発気化して圧縮機1に戻る。圧縮機1の出口と
蒸発器5の入口とを繋ぐバイパス回路7に介装されたモ
ジュレーテイングバルブ8を開閉することによって冷却
能力が調整される。
An example of this type of refrigerating unit is shown in FIG. When the refrigerating unit is operated, the gas refrigerant discharged from the compressor 1 enters the condenser 2, where it radiates heat to the outside air sent by the condenser blower 3 to be condensed and liquefied. The liquid refrigerant is adiabatically expanded by being throttled by the electronic expansion valve 4, and then enters the evaporator 5, where the inside air sent by the evaporator blower 6 is cooled to evaporate and return to the compressor 1. . The cooling capacity is adjusted by opening and closing the modulating valve 8 installed in the bypass circuit 7 that connects the outlet of the compressor 1 and the inlet of the evaporator 5.

【0004】コンテナ9内に収容された貨物の温度を検
出する積荷温度センサ10、外気の温度を検出する外気温
センサ11、蒸発器5に吸込まれる空気の温度を検出する
吸込空気温度センサ12、蒸発器5から吹き出された空気
の温度を検出する吹出空気温度センサ13、デフロスト用
ヒータ14の過熱を防止するための過熱防止センサ15、蒸
発器5出口の冷媒温度を検出する蒸発器出口冷媒温度セ
ンサ16、圧縮機1から吐出された冷媒ガスの温度を検出
する吐出冷媒ガス温度センサ17、高圧冷媒回路内の冷媒
圧力を検出する高圧センサ18、低圧冷媒回路内の冷媒圧
力を検出する低圧センサ19等の検出値はコントローラ20
に入力される。
A cargo temperature sensor 10 for detecting the temperature of the cargo contained in the container 9, an outside air temperature sensor 11 for detecting the temperature of the outside air, and an intake air temperature sensor 12 for detecting the temperature of the air sucked into the evaporator 5. An outlet air temperature sensor 13 for detecting the temperature of the air blown from the evaporator 5, an overheat prevention sensor 15 for preventing the defrost heater 14 from overheating, and an evaporator outlet refrigerant for detecting the refrigerant temperature at the outlet of the evaporator 5. Temperature sensor 16, discharge refrigerant gas temperature sensor 17 for detecting the temperature of the refrigerant gas discharged from the compressor 1, high pressure sensor 18 for detecting the refrigerant pressure in the high pressure refrigerant circuit, low pressure for detecting the refrigerant pressure in the low pressure refrigerant circuit The detected value of the sensor 19 etc. is the controller 20
Entered in.

【0005】運転スイッチ25、マニュアルデフロストス
イッチ26、電源逆相切換スイッチ27、庫内温度設定器28
等の入力信号もコントローラ20に入力される。
An operating switch 25, a manual defrost switch 26, a power source reverse phase changeover switch 27, and an inside temperature setting device 28.
Input signals such as the above are also input to the controller 20.

【0006】このコントローラ20の出力信号は圧縮機1
の駆動モータ21、凝縮器用送風機3の駆動モータ22、電
子膨張弁4、モジュレーテイングバルブ8、蒸発器用送
風機6の駆動モータ23、デフロスト用ヒータ14、換気装
置24、庫内温度表示器29、運転データ記録器30等に出力
される。
The output signal of the controller 20 is the compressor 1
Drive motor 21, drive motor 22 for condenser blower 3, electronic expansion valve 4, modulating valve 8, drive motor 23 for evaporator blower 6, defrost heater 14, ventilation device 24, in-compartment temperature indicator 29, operation It is output to the data recorder 30 or the like.

【0007】冷凍ユニットの正常運転中は一定時間(例
えば1時間)毎に日時、運転モード、吹出空気温度又は
吸込空気温度が記録器30に記録され、また、電源スイッ
チのオン・オフ時、マニュアルデフロストスイッチ26の
オン・オフ時、設定温度の変更時、トリップスタートキ
ーの操作時、アラーム発生・解除時等のイベント毎に発
生日時、事象コード、設定温度、吹出空気温度又は吸込
空気温度が記録器30に記録される。
During normal operation of the refrigeration unit, the date and time, operation mode, blown air temperature or intake air temperature are recorded in the recorder 30 at regular time intervals (for example, one hour), and when the power switch is turned on / off, the manual operation is performed. The date and time of occurrence, event code, set temperature, blown air temperature or intake air temperature are recorded for each event such as when the defrost switch 26 is turned on and off, when the set temperature is changed, when the trip start key is operated, and when an alarm is generated or reset. Recorded in container 30.

【0008】[0008]

【発明が解決しようとする課題】上記従来のデータ記録
方式においては、冷凍ユニットの正常運転時においても
その運転データが一定時間毎に記録されるので、コンテ
ナの一航海(例えば90日間)の運転データを記録して置
くためには大容量のメモリが必要であった。
In the above conventional data recording method, the operation data of the refrigeration unit is recorded at regular intervals even during normal operation of the refrigeration unit, so operation of the container during one voyage (for example, 90 days). A large amount of memory was required to record and store the data.

【0009】[0009]

【課題を解決するための手段】本発明は上記課題を解決
するために発明されたものであって、その要旨とすると
ころは、コンテナ用冷凍ユニットの正常運転時における
データを一定時間毎に記録するコンテナ用冷凍ユニット
のデータ記録方式において、制御対象温度の設定温度か
らの偏差が所定範囲内にあり、かつ、前回記録された制
御対象温度が上記所定範囲内にあれば前回データを今回
のデータに書き替えて記録することを特徴とするコンテ
ナ用冷凍ユニットのデータ記録方式にある。
The present invention has been invented in order to solve the above-mentioned problems, and its gist is to record data during a normal operation of a container refrigeration unit at regular time intervals. In the data recording method of the container refrigeration unit, if the deviation of the control target temperature from the set temperature is within the predetermined range and the previously recorded control target temperature is within the above predetermined range, the previous data is the current data. It is a data recording method of the container refrigeration unit, which is characterized by rewriting and recording.

【0010】[0010]

【実施例】本発明の1実施例を図1に示すフローチャー
トを参照しながら具体的に説明する。コンテナ用冷凍ユ
ニットの正常運転時、制御がスタートすると、ステップ
(1)で、所定時間( 例えば1時間) が経過したか否かが
確かめられ、然りの場合にはステップ(2) で、今回の温
度が所定範囲内か否か、即ち、吹出空気温度又は吸込空
気温度等の制御対象温度の設定温度からの偏差が所定範
囲内か否かが判断される。然りの場合にはステップ(3)
で前回の温度は所定範囲内か否か、即ち、前回の記録時
に記録された制御対象温度が所定範囲内か否かが判断さ
れる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described with reference to the flowchart shown in FIG. During normal operation of the container refrigeration unit, when control starts, the step
In (1), it is confirmed whether or not a predetermined time (for example, 1 hour) has elapsed, and if so, in step (2), whether or not the current temperature is within the predetermined range, that is, the blown air temperature Alternatively, it is determined whether or not the deviation of the control target temperature such as the intake air temperature from the set temperature is within a predetermined range. If yes, step (3)
Then, it is determined whether or not the previous temperature is within the predetermined range, that is, whether or not the control target temperature recorded at the time of the previous recording is within the predetermined range.

【0011】所定範囲内であれば、ステップ(4) で前回
のデータを今回のデータに書き替える。即ち、前回の記
録時に記録されたデータが消去され、これに代えて今回
のデータが記録される。ステップ(2) 及びステップ(3)
で否と判断されたとき、即ち、今回の記録時における制
御対象温度が所定範囲を逸脱しているとき及び前回の記
録時における制御対象温度が所定範囲を逸脱していると
きはステップ(5) で今回の記録時におけるデータが記録
される。ステップ(4) 及び(5) の後ステップ(1) に移行
して上記を繰り返す。
If it is within the predetermined range, the previous data is rewritten to the current data in step (4). That is, the data recorded in the previous recording is erased, and the current data is recorded instead of this. Step (2) and step (3)
If it is determined to be no, that is, if the control target temperature at the time of the current recording deviates from the predetermined range and if the control target temperature at the time of the previous recording deviates from the predetermined range, step (5). Then, the data at the time of this recording is recorded. After steps (4) and (5), move to step (1) and repeat the above.

【0012】イベントが発生したときは、その都度イベ
ント毎に所要のデータが記録され、この記録後計時が開
始される。
When an event occurs, required data is recorded for each event, and after the recording, time counting is started.

【0013】しかして、今回のデータ記録時における制
御対象温度が所定範囲内にあり、かつ、前回の記録時に
おける制御対象温度が所定範囲内にあれば、前回記録さ
れたデータが今回のデータに書き替えられるので、コン
テナの一航海の間に記録されるデータは大巾に少なくな
る。そして、最新のデータが記録されているので、冷凍
ユニットの不調と間違えられることもない。
However, if the control target temperature at the time of recording the current data is within the predetermined range and the control target temperature at the time of the previous recording is within the predetermined range, the previously recorded data becomes the current data. As it is rewritten, the data recorded during one voyage of the container is greatly reduced. And since the latest data is recorded, it cannot be mistaken for a malfunction of the refrigeration unit.

【0014】[0014]

【発明の効果】本発明においては、制御対象温度が所定
の範囲内にあり、かつ、前回記録された制御対象温度が
所定の範囲内にあれば前回のデータが今回のデータに書
き替えられるので、記録器のメモリの容量を大巾に少な
くすることができるとともにコンテナの稼働記録の出力
及び検査が容易になる。
According to the present invention, if the control target temperature is within the predetermined range and the control target temperature recorded last time is within the predetermined range, the previous data is rewritten to the current data. The memory capacity of the recorder can be greatly reduced and the output and inspection of the operation record of the container can be facilitated.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の1実施例を示すフローチャートであ
る。
FIG. 1 is a flowchart showing an embodiment of the present invention.

【図2】従来のコンテナ用冷凍ユニットの系統図であ
る。
FIG. 2 is a system diagram of a conventional container refrigeration unit.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 コンテナ用冷凍ユニットの正常運転時に
おけるデータを一定時間毎に記録するコンテナ用冷凍ユ
ニットのデータ記録方式において、制御対象温度の設定
温度からの偏差が所定範囲内にあり、かつ、前回記録さ
れた制御対象温度が上記所定範囲内にあれば前回データ
を今回のデータに書き替えて記録することを特徴とする
コンテナ用冷凍ユニットのデータ記録方式。
1. A data recording method for a container refrigeration unit, which records data during a normal operation of the container refrigeration unit at regular time intervals, wherein a deviation of a control target temperature from a set temperature is within a predetermined range, and A data recording method for a container refrigeration unit, characterized in that if the previously recorded control target temperature is within the predetermined range, the previous data is rewritten and recorded.
JP30317992A 1992-10-16 1992-10-16 Data-recording method for refrigeration apparatus for container Withdrawn JPH06129758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30317992A JPH06129758A (en) 1992-10-16 1992-10-16 Data-recording method for refrigeration apparatus for container

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30317992A JPH06129758A (en) 1992-10-16 1992-10-16 Data-recording method for refrigeration apparatus for container

Publications (1)

Publication Number Publication Date
JPH06129758A true JPH06129758A (en) 1994-05-13

Family

ID=17917837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30317992A Withdrawn JPH06129758A (en) 1992-10-16 1992-10-16 Data-recording method for refrigeration apparatus for container

Country Status (1)

Country Link
JP (1) JPH06129758A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012185A1 (en) * 1995-09-29 1997-04-03 Daikin Industries, Ltd. Refrigerator for container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997012185A1 (en) * 1995-09-29 1997-04-03 Daikin Industries, Ltd. Refrigerator for container
US6119471A (en) * 1995-09-29 2000-09-19 Daikin Industries, Ltd. Refrigerator for container

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Effective date: 20000104