JPH09115045A - Control equipment for automatic vending machine - Google Patents

Control equipment for automatic vending machine

Info

Publication number
JPH09115045A
JPH09115045A JP7270783A JP27078395A JPH09115045A JP H09115045 A JPH09115045 A JP H09115045A JP 7270783 A JP7270783 A JP 7270783A JP 27078395 A JP27078395 A JP 27078395A JP H09115045 A JPH09115045 A JP H09115045A
Authority
JP
Japan
Prior art keywords
outdoor fan
temperature
air temperature
delay time
outside air
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.)
Pending
Application number
JP7270783A
Other languages
Japanese (ja)
Inventor
Satoru Unno
覚 海野
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP7270783A priority Critical patent/JPH09115045A/en
Priority to KR1019960046413A priority patent/KR970022868A/en
Publication of JPH09115045A publication Critical patent/JPH09115045A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00Arrangement or mounting of control or safety devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00Means for sensing or measuring; Sensors therefor
    • F25D2700/14Sensors measuring the temperature outside the refrigerator or freezer

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

PROBLEM TO BE SOLVED: To perform the suitable operation control of an outdoor fan while considering the temperature of the external air when a motor compressor system is stopped. SOLUTION: When a control part 7 stops the operation of an MC 5 based on the temperature detected by an internal temperature sensor 9 and the external air temperature detected by an external air temperature sensor 8 is higher than a prescribed value, the operation delay time of an outdoor fan 6 corresponding to that external air temperature is read out of a storage device inside the control part 7 and after the lapse of that delay time, the outdoor fan 6 is stopped. Thus, a high-temperature cooling medium is speedily cooled and the temperature of an evaporator is prevented from rising because of backward flow to the evaporator so that the suitable operation of the outdoor fan such as energy saving can be performed while considering the external air temperature.

Description

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

【0001】[0001]

【発明の属する技術分野】この発明は、モータコンプレ
ッサ装置(以下MCという)冷却用の室外ファンを備え
た自動販売機(以下、自販機という)の制御装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for an automatic vending machine (hereinafter referred to as a vending machine) equipped with an outdoor fan for cooling a motor compressor device (hereinafter referred to as MC).

【0002】[0002]

【従来の技術】従来、MC冷却用の室外ファンはその機
能上、外気温度とは無関係に、MC稼働中だけオンし、
MC停止と同時にオフするように制御していた。
2. Description of the Related Art Conventionally, an outdoor fan for cooling an MC is turned on only during operation of the MC regardless of the outside air temperature due to its function.
It was controlled to turn off at the same time as MC stop.

【0003】[0003]

【発明が解決しようとする課題】しかし、従来の制御方
法には次の問題がある。たとえば、夏期など外気温度が
高いときにMCがオフすると、MC内は高温になるが商
品を冷却する庫内のエバポレータ部は低温なので、高温
になったMC内の冷媒が低温のエバポレータ部に流れ込
み、エバポレータ部の温度を上げ、この結果、庫内温度
も上昇する。このため、MCが早めに作動しMCの電力
消費も増える。
However, the conventional control method has the following problems. For example, if the MC is turned off when the outside air temperature is high, such as during summer, the temperature inside the MC becomes high but the evaporator inside the refrigerator that cools the product is cold, so the refrigerant inside the hot MC flows into the evaporator at low temperature. As a result, the temperature of the evaporator is raised, and as a result, the temperature inside the refrigerator is also raised. Therefore, the MC operates earlier and the power consumption of the MC also increases.

【0004】これは、MCオフと同時に冷却用の室外フ
ァンもオフさせているからである。この対策としては、
MCオフ後も室外ファンをすぐオフさせないで、一定時
間冷却を続けるようにすればいい。しかし、外気温度が
低いときは、室外ファンの冷却度合いによっては、MC
の起動不良が起こるおそれがある。この発明の課題は、
MCオフ時に、外気温度を考慮した適切な室外ファン運
転の制御を行うことである。
This is because the outdoor fan for cooling is also turned off when the MC is turned off. As a countermeasure,
Even after the MC is turned off, the outdoor fan should not be turned off immediately, but cooling should be continued for a certain time. However, when the outside air temperature is low, depending on the cooling degree of the outdoor fan, MC
There is a risk of a startup failure. The object of the present invention is to
This is to appropriately control the outdoor fan operation in consideration of the outside air temperature when the MC is off.

【0005】[0005]

【課題を解決するための手段】冷媒循環用のモータコン
プレッサ装置と、この装置を冷却する室外ファンとを備
え、前記装置をオンオフすることにより庫内温度を制御
する自販機の制御装置において、発明1による自販機の
制御装置は、外気温度を検知する温度検知手段と、外気
温度に対応する室外ファン運転遅延時間を記憶する記憶
手段と、モータコンプレッサ装置のオフ時に、温度検知
手段による外気温度が所定値より高いときは、記憶手段
から読み出した室外ファン運転遅延時間が経過後、室外
ファンをオフする制御部とを備える。
According to a first aspect of the invention, there is provided a controller for a vending machine, comprising a motor compressor device for circulating a refrigerant and an outdoor fan for cooling the device, and controlling the temperature inside the refrigerator by turning the device on and off. The control device of the vending machine according to, the temperature detection means for detecting the outside air temperature, the storage means for storing the outdoor fan operation delay time corresponding to the outside air temperature, the outside air temperature by the temperature detection means when the motor compressor device is off, the predetermined value. When it is higher, the control unit turns off the outdoor fan after the outdoor fan operation delay time read from the storage means has elapsed.

【0006】これにより、MCオフ時に、外気温度が所
定値より高いときは、その外気温度に見合った室外ファ
ン運転遅延時間の経過後、室外ファンがオフされるの
で、高温の冷媒がMCからエバポレータ部に流れ込み庫
内温度を上げることがなくなり、適切な室外ファン運転
の制御が行われる。発明2による自販機の制御装置は、
モータコンプレッサ装置の運転率を算出する算出手段
と、運転率に対応する室外ファン運転遅延時間を記憶す
る記憶手段と、モータコンプレッサ装置のオフ時に、算
出手段による運転率が所定値より高いときは、記憶手段
から読み出した室外ファン運転遅延時間が経過後、室外
ファンをオフする制御部とを備える。
Thus, when the outside air temperature is higher than a predetermined value when the MC is off, the outdoor fan is turned off after the outdoor fan operation delay time commensurate with the outside air temperature elapses, so that the high temperature refrigerant is evaporated from the MC to the evaporator. It will not flow into the room and raise the temperature inside the warehouse, and the outdoor fan operation will be controlled appropriately. The control device of the vending machine according to invention 2 is
A calculating means for calculating the operating rate of the motor compressor device, a storage means for storing an outdoor fan operation delay time corresponding to the operating rate, and a running rate by the calculating means higher than a predetermined value when the motor compressor device is off, And a control unit for turning off the outdoor fan after the outdoor fan operation delay time read from the storage means has elapsed.

【0007】これにより、MCオフ時に、運転率によっ
て外気温度を考慮できるので、発明1と同様にして、適
切な室外ファン運転の制御が行われる。
As a result, when the MC is off, the outside air temperature can be taken into consideration by the operating rate, so that the outdoor fan operation is appropriately controlled in the same manner as in the first aspect of the invention.

【0008】[0008]

【発明の実施の形態】図1はこの発明の一実施の形態を
示す構成ブロック図である。1は自販機本体、2は商品
を収納し冷却する庫内、5はMCで、冷媒を圧縮し、凝
縮器4で液化し、エバポレータ3へ送り、庫内2を冷却
する。6はMC冷却用の室外ファン、7は制御部で、庫
内温度センサ9により庫内温度を検知し、設定温度に基
づいてMC5のオンオフ制御を行うとともに、外気温度
センサ8が検知した外気温度により室外ファン6の運転
を制御する。なお、後記するように、発明2では外気温
度センサ8は不要である。 (1)発明1について 図2は発明1の要部動作を示すフローチャートである。
図1を参照しながら動作を説明する。
1 is a block diagram showing the configuration of an embodiment of the present invention. Reference numeral 1 is a vending machine body, 2 is a refrigerator for storing and cooling products, 5 is an MC, which compresses a refrigerant, liquefies it by a condenser 4, sends it to an evaporator 3, and cools the refrigerator 2. 6 is an outdoor fan for cooling the MC, 7 is a control unit, which detects the internal temperature by the internal temperature sensor 9 and performs on / off control of the MC 5 based on the set temperature, and the external air temperature detected by the external air temperature sensor 8. The operation of the outdoor fan 6 is controlled by. As will be described later, in the invention 2, the outside air temperature sensor 8 is unnecessary. (1) About Invention 1 FIG. 2 is a flowchart showing the operation of the main part of invention 1.
The operation will be described with reference to FIG.

【0009】制御部7は、庫内温度センサ9により、庫
内温度が所定値より高いかどうかを判断し(ステップS
1)、高いときは(分岐Y)MC5および室外ファン6
をオンし冷却を開始する(ステップS2)。冷却により
所定の庫内温度まで下がったら(ステップS3,分岐
Y)MCをオフし(ステップS4)、下がっていなけれ
ば(ステップS3,分岐N)ステップS2へもどり冷却
を続ける。また、ステップS1で庫内温度が高くないと
きは(分岐N)ステップS7へ進む。以上のステップま
では、従来の制御と同様である。
The control unit 7 determines whether the internal temperature is higher than a predetermined value by the internal temperature sensor 9 (step S
1), when it is high (branch Y) MC5 and outdoor fan 6
Is turned on to start cooling (step S2). When the temperature has fallen to a predetermined inside temperature by cooling (step S3, branch Y), MC is turned off (step S4), and if not lowered (step S3, branch N), the process returns to step S2 to continue cooling. If the internal temperature is not high in step S1 (branch N), the process proceeds to step S7. The above steps are the same as the conventional control.

【0010】次に、制御部7は、外気温度センサ8によ
り、外気温度が所定値より高いかどうかを判断する(ス
テップS5)。高くないときは(分岐N)室外ファン6
をオフし(ステップS8)ステップS1へもどる。高い
ときは(分岐Y)その温度に見合った所定の室外ファン
運転遅延時間、つまりMCオフ後に室外ファン6が動作
する時間を設定し(ステップS6)、その遅延時間が経
過したかどうかを判断する(ステップS7)。時間経過
していれば(分岐Y)室外ファン6をオフしてから(ス
テップS8)ステップS1へもどり、経過していなけれ
ば(分岐N)そのままステップS1へもどる。
Next, the control unit 7 determines whether the outside air temperature is higher than a predetermined value by the outside air temperature sensor 8 (step S5). When not high (branch N) outdoor fan 6
Is turned off (step S8) and the process returns to step S1. When it is high (branch Y), a predetermined outdoor fan operation delay time corresponding to the temperature is set, that is, a time when the outdoor fan 6 operates after the MC is turned off (step S6), and it is determined whether or not the delay time has elapsed. (Step S7). If the time has elapsed (branch Y), the outdoor fan 6 is turned off (step S8), and the process returns to step S1. If the time has not elapsed (branch N), the process directly returns to step S1.

【0011】以上の動作によって、MCオフ時に、外気
温度を考慮して室外ファン運転を制御できる。なお、外
気温度に対応する所定の室外ファン運転遅延時間は、た
とえば制御部7内の記憶装置にあらかじめ記憶しておい
てもよい。 (2)発明2について 図3は発明2の要部動作を示すフローチャートである。
図1を参照しながら動作を説明する。
By the above operation, the outdoor fan operation can be controlled in consideration of the outside air temperature when the MC is off. The predetermined outdoor fan operation delay time corresponding to the outside air temperature may be stored in advance in a storage device in the control unit 7, for example. (2) About Invention 2 FIG. 3 is a flowchart showing the operation of the main part of invention 2.
The operation will be described with reference to FIG.

【0012】発明1では、室外ファン運転遅延時間を設
定するとき、外気温度が所定値より高いかどうかを外気
温度センサ8の検出温度によって判断している(発明
1,ステップS5)。これに対し、発明2では、外気温
度の高低をMCの運転率から間接的に判断している(後
記の発明2,ステップS51)。まず、発明1と同様
に、制御部7は、庫内温度が所定値より高いかどうかを
判断し(ステップS1)、高いときは(分岐Y)MC5
および室外ファン6をオンし冷却を開始する(ステップ
S2)。冷却により所定の庫内温度まで下がったら(ス
テップS3,分岐Y)MC5をオフし(ステップS
4)、下がっていなければ(ステップS3,分岐N)M
C5のオン時間を計数し(ステップS31)ステップS
2へもどり冷却を続ける。また、ステップS1で庫内温
度が高くないときは(分岐N)MC5のオフ時間を計数
し(ステップS11)ステップS7へ進む。
In the invention 1, when the outdoor fan operation delay time is set, it is judged whether the outside air temperature is higher than a predetermined value or not by the temperature detected by the outside air temperature sensor 8 (invention 1, step S5). On the other hand, in Invention 2, whether the outside air temperature is high or low is indirectly determined from the operating rate of the MC (Invention 2, step S51 described below). First, similarly to the first aspect of the invention, the control unit 7 determines whether or not the internal cold storage temperature is higher than a predetermined value (step S1), and when the internal cold storage temperature is high (branch Y) MC5
Then, the outdoor fan 6 is turned on to start cooling (step S2). When the temperature of the inside of the refrigerator is lowered to a predetermined temperature by cooling (step S3, branch Y), MC5 is turned off (step S
4) If not down (step S3, branch N) M
The on-time of C5 is counted (step S31) and step S
Return to 2 and continue cooling. When the internal temperature is not high in step S1 (branch N), the off time of MC5 is counted (step S11), and the process proceeds to step S7.

【0013】次に、ステップS4でMC5をオフした場
合は、制御部7は、MC5の運転率、たとえば直前ある
いは数回前までのMC5の運転サイクルに対するオン時
間の比率が、所定の運転率より高いかどうかを判断する
(ステップS51)。高くないときは(分岐N)外気温
度が低いものと判断し、室外ファン6をオフし(ステッ
プS8)、MC運転率を計算して(ステップS91)ス
テップS1へもどる。運転率が高いときは(分岐Y)そ
の運転率に見合った所定の室外ファン運転遅延時間を設
定し(ステップS6)、その遅延時間が経過したかどう
かを判断する(ステップS7)。時間経過していれば
(分岐Y)室外ファン6をオフしてから(ステップS
8)上記のステップS91を経由してステップS1へも
どり、経過していなければ(分岐N)そのままステップ
S91を経由してステップS1へもどる。
Next, when the MC5 is turned off in step S4, the control unit 7 determines that the operating rate of the MC5, for example, the ratio of the on-time to the operating cycle of the MC5 immediately before or several times before is more than the predetermined operating rate. It is determined whether it is high (step S51). When it is not high (branch N), it is determined that the outside air temperature is low, the outdoor fan 6 is turned off (step S8), the MC operation rate is calculated (step S91), and the process returns to step S1. When the operating rate is high (branch Y), a predetermined outdoor fan operation delay time corresponding to the operating rate is set (step S6), and it is determined whether the delay time has elapsed (step S7). If the time has elapsed (branch Y), the outdoor fan 6 is turned off (step S
8) Return to step S1 via the above step S91, and if not elapsed (branch N), return directly to step S1 via step S91.

【0014】以上の動作によって、MCオフ時に、MC
の運転率に基づいて外気温度を考慮して室外ファン運転
を制御できる。なお、運転率に対応する室外ファン運転
遅延時間は、たとえば制御部7内の記憶装置にあらかじ
め記憶しておいてもよい。
By the above operation, when the MC is off, the MC
It is possible to control the outdoor fan operation in consideration of the outside air temperature based on the operating rate of. The outdoor fan operation delay time corresponding to the operation rate may be stored in advance in, for example, a storage device in the control unit 7.

【0015】[0015]

【発明の効果】この発明によれば、MCオフと同時に室
外ファンを止めないで、外気温度に基づいた遅延時間後
にオフする。このため、MC内の高温の冷媒が早く冷や
され、エバポレータ部へ逆流してエバポレータの温度を
上げることがないので、庫内の温度上昇が抑えられ、適
切な室外ファン運転の制御ができ、省エネルギー運転が
可能となる。
According to the present invention, the outdoor fan is not stopped at the same time as the MC is turned off, but is turned off after a delay time based on the outside air temperature. For this reason, the high-temperature refrigerant in the MC is cooled quickly and does not flow back to the evaporator section to raise the temperature of the evaporator. Therefore, the temperature rise in the refrigerator is suppressed, and proper outdoor fan operation can be controlled to save energy. It becomes possible to drive.

【0016】また、外気温度は直接外気温度センサで検
知しないで、運転率で代表することにより同様の効果が
得られる。
Further, the outside air temperature is not directly detected by the outside air temperature sensor, but the same effect can be obtained by representing it by the operation rate.

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

【図1】この発明の一実施の形態を示す構成ブロック図FIG. 1 is a configuration block diagram showing an embodiment of the present invention.

【図2】発明1に基づく動作を示すフローチャートFIG. 2 is a flowchart showing an operation based on invention 1;

【図3】発明2に基づく動作を示すフローチャートFIG. 3 is a flowchart showing an operation based on the invention 2.

【符号の説明】[Explanation of symbols]

1…自販機本体、2…庫内、3…エバポレータ、4…凝
縮器、5…MC、6…室外ファン、7…制御部、8…外
気温度センサ、9…庫内温度センサ。
DESCRIPTION OF SYMBOLS 1 ... Main body of a vending machine, 2 ... Inside a warehouse, 3 ... Evaporator, 4 ... Condenser, 5 ... MC, 6 ... Outdoor fan, 7 ... Control part, 8 ... Outside temperature sensor, 9 ... Inside temperature sensor.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】冷媒循環用のモータコンプレッサ装置と、
この装置を冷却する室外ファンとを備え、前記装置をオ
ンオフすることにより庫内温度を制御する自動販売機の
制御装置において、 外気温度を検知する温度検知手段と、 外気温度に対応する室外ファン運転遅延時間を記憶する
記憶手段と、 モータコンプレッサ装置のオフ時に、温度検知手段によ
る外気温度が所定値より高いときは、記憶手段から読み
出した室外ファン運転遅延時間が経過後、室外ファンを
オフする制御部とを備えたことを特徴とする自動販売機
の制御装置。
1. A motor compressor device for circulating a refrigerant,
An outdoor fan that cools this device, and a vending machine control device that controls the temperature inside the refrigerator by turning on and off the device, a temperature detection unit that detects the outside air temperature, and an outdoor fan operation that corresponds to the outside air temperature. A storage means for storing the delay time and a control for turning off the outdoor fan after the outdoor fan operation delay time read from the storage means has elapsed when the outside air temperature detected by the temperature detection means is higher than a predetermined value when the motor compressor device is off. And a control unit for a vending machine.
【請求項2】冷媒循環用のモータコンプレッサ装置と、
この装置を冷却する室外ファンとを備え、前記装置をオ
ンオフすることにより庫内温度を制御する自動販売機の
制御装置において、 モータコンプレッサ装置の運転率を算出する算出手段
と、 運転率に対応する室外ファン運転遅延時間を記憶する記
憶手段と、 モータコンプレッサ装置のオフ時に、算出手段による運
転率が所定値より高いときは、記憶手段から読み出した
室外ファン運転遅延時間が経過後、室外ファンをオフす
る制御部とを備えたことを特徴とする自動販売機の制御
装置。
2. A motor compressor device for circulating a refrigerant,
A vending machine control device that controls the temperature inside the refrigerator by turning on and off the outdoor fan that cools this device, and a calculating unit that calculates the operating ratio of the motor compressor device, and the operating unit that corresponds to the operating ratio. The storage means for storing the outdoor fan operation delay time, and when the motor compressor device is off and the operating rate by the calculation means is higher than a predetermined value, the outdoor fan is turned off after the outdoor fan operation delay time read from the storage means has elapsed. A control device for a vending machine, comprising:
JP7270783A 1995-10-19 1995-10-19 Control equipment for automatic vending machine Pending JPH09115045A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP7270783A JPH09115045A (en) 1995-10-19 1995-10-19 Control equipment for automatic vending machine
KR1019960046413A KR970022868A (en) 1995-10-19 1996-10-17 Control device of vending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7270783A JPH09115045A (en) 1995-10-19 1995-10-19 Control equipment for automatic vending machine

Publications (1)

Publication Number Publication Date
JPH09115045A true JPH09115045A (en) 1997-05-02

Family

ID=17490942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7270783A Pending JPH09115045A (en) 1995-10-19 1995-10-19 Control equipment for automatic vending machine

Country Status (2)

Country Link
JP (1) JPH09115045A (en)
KR (1) KR970022868A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003121041A (en) * 2001-10-10 2003-04-23 Sanyo Electric Co Ltd Refrigerator-freezer
JP2011180959A (en) * 2010-03-03 2011-09-15 Fuji Electric Retail Systems Co Ltd Vending machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003121041A (en) * 2001-10-10 2003-04-23 Sanyo Electric Co Ltd Refrigerator-freezer
JP2011180959A (en) * 2010-03-03 2011-09-15 Fuji Electric Retail Systems Co Ltd Vending machine

Also Published As

Publication number Publication date
KR970022868A (en) 1997-05-30

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