JPS6349667Y2 - - Google Patents
Info
- Publication number
- JPS6349667Y2 JPS6349667Y2 JP1983042625U JP4262583U JPS6349667Y2 JP S6349667 Y2 JPS6349667 Y2 JP S6349667Y2 JP 1983042625 U JP1983042625 U JP 1983042625U JP 4262583 U JP4262583 U JP 4262583U JP S6349667 Y2 JPS6349667 Y2 JP S6349667Y2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- temperature
- set cooling
- case
- rotation speed
- 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
Links
- 238000001816 cooling Methods 0.000 claims description 17
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Freezers Or Refrigerated Showcases (AREA)
Description
【考案の詳細な説明】
本考案は洋菓子その他の食品用冷凍あるいは冷
蔵シヨーケースに関するもので、特にインバータ
等回転速度変速制御装置を用いて庫内の温度降下
を速め、又軽負荷時においては負荷に応じた冷凍
機制御を行ない省エネルギー効果を得るようにし
たシヨーケースを提案するものである。[Detailed description of the invention] The present invention relates to a frozen or refrigerated case for Western confectionery and other foods.In particular, it uses a rotational speed variable speed control device such as an inverter to speed up the temperature drop inside the refrigerator. This paper proposes a case that controls the refrigerator accordingly and achieves energy-saving effects.
一般に冷蔵シヨーケースは市販のコンデンシン
グユニツトと膨脹機構及び冷却器によつて冷却機
構が構成されており、冷却能力は冷媒の蒸発温度
とコンプレツサーの回転数によつて定まつてしま
う。このため庫内温度が設定温度に達すると温度
調節器によつてコンプレツサーを停止、その後庫
内温度が上昇するとコンプレツサーが起動すると
いうように、起動、停止を繰返し(第3図X点線
参照)庫内温度を制御している。このためコンプ
レツサーの起動のたびに多大の起動電流が流れ
る。さらに運転中も一定のフル運転であるために
コンデンサーフアンもフル運転となり、特に夏期
においてコンデンサーからの大量の熱風が不快感
をもたらしている。又コンプレツサーに電源を投
入する時(スイツチを入れた時)はケースの負荷
は大きいが、コンプレツサーの回転数が定められ
た一定値であるため温度降下に時間がかかる。 Generally, the cooling mechanism of a refrigerated case is composed of a commercially available condensing unit, an expansion mechanism, and a cooler, and the cooling capacity is determined by the evaporation temperature of the refrigerant and the rotation speed of the compressor. Therefore, when the temperature inside the refrigerator reaches the set temperature, the compressor is stopped by the temperature controller, and then when the temperature inside the refrigerator rises, the compressor is started, and so on. Controls internal temperature. Therefore, a large amount of starting current flows each time the compressor is started. Furthermore, since the condenser fan is running at full capacity even during operation, a large amount of hot air from the condenser causes discomfort, especially in the summer. Also, when the power is turned on to the compressor (when the switch is turned on), the load on the case is large, but since the rotation speed of the compressor is a predetermined constant value, it takes time for the temperature to drop.
本考案はこのような点について改めたシヨーケ
ースを提供しようとするもので、その構成は冷蔵
又は冷凍シヨーケースに使用されるコンプレツサ
ー駆動モータ及び又はコンデンサーフアン駆動モ
ータの駆動回路に、起動時は低回転より高回転に
徐々に上昇させるよう徐々に周波数を上昇させる
インバータよりなる回転速度変速機構と、該回転
速度変速機構をケース内温度が設定冷却温度範囲
より高いときの起動時は電源周波数より高い周波
数での回転とし設定冷却温度範囲に達すれば定常
運転範囲の周波数に落し設定冷却温度範囲以下と
なればモータ駆動を停止させるようコントロール
する温度センサーと制御回路よりなるコントロー
ル装置を組入れたことを特徴とする冷蔵又は冷凍
シヨーケースである。 The present invention aims to provide a show case that has been improved in this respect, and its configuration is such that the drive circuit for the compressor drive motor and/or condenser fan drive motor used in the refrigerating or freezing show case has a low rotation speed when starting up. A rotation speed change mechanism consisting of an inverter that gradually increases the frequency to gradually increase the rotation speed to a high rotation speed, and a rotation speed change mechanism that operates at a frequency higher than the power supply frequency when starting when the temperature inside the case is higher than the set cooling temperature range. The present invention is characterized by incorporating a control device consisting of a temperature sensor and a control circuit that controls the rotation of the motor, reduces the frequency to the steady operating range when the set cooling temperature range is reached, and stops the motor drive when the set cooling temperature range is lower than the set cooling temperature range. Refrigerated or frozen storage case.
以下附図を参照して本考案の実施例を説明す
る。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
第1図は冷蔵シヨーケースの背面図、第2図は
作動回路例の説明図、第3図はインバータの作動
例説明図である。 FIG. 1 is a rear view of the refrigerating case, FIG. 2 is an explanatory diagram of an example of an operating circuit, and FIG. 3 is an explanatory diagram of an example of the operation of an inverter.
第1図及び第2図において、1はインバータ、
2はコンプレツサー、3はコンデンサー、4はコ
ンデンサーフアン、5は膨張器、6は冷却器、7
は温度センサー、8は制御回路、9は電源スイツ
チを示し、インバータ1は電源スイツチ9を入れ
るとその出力周波数を徐々に上昇し、(第3図a
参照)、その出力周波数に応じてコンプレツサー
2及びコンデンサーフアン4の各駆動モータの回
転数を上昇させるよう構成されている。従つて起
動時の過大な突入電流(ラツシユカレント)を防
止できる。その出力周波数の制御は制御回路8に
よりシヨーケース内の温度センサー7に基き第3
図のように制御される。 In FIGS. 1 and 2, 1 is an inverter;
2 is a compressor, 3 is a condenser, 4 is a condenser fan, 5 is an expander, 6 is a cooler, 7
is a temperature sensor, 8 is a control circuit, and 9 is a power switch. When the power switch 9 is turned on, the inverter 1 gradually increases its output frequency (Fig. 3a).
), the rotational speed of each drive motor of the compressor 2 and condenser fan 4 is increased according to the output frequency thereof. Therefore, excessive rush current at startup can be prevented. The output frequency is controlled by a control circuit 8 based on a temperature sensor 7 inside the show case.
It is controlled as shown in the figure.
第3図において上方には出力周波数Hzと時間T
との関係、下方には設定温度と時間Tとの関係を
示し、上方の30〜50Hz間が定常運転範囲、下方の
Kが設定冷却温度、K′,K″が設定冷却温度制御
範囲を示す。 In Figure 3, the upper part shows the output frequency Hz and time T.
The lower part shows the relationship between the set temperature and time T, the upper part between 30 and 50 Hz shows the steady operation range, the lower part K shows the set cooling temperature, and K' and K'' show the set cooling temperature control range. .
更にその制御を第3図につき説明すると、電源
スイツチ9を入れるとその出力周波数を徐々に上
昇させ(a参照)、シヨーケース内温度が高い場
合定常運転範囲(図では例として30〜50Hz)より
可成高い周波数(b−例80Hz)まで昇らせ、この
高い周波数出力でコンプレツサー2及びコンデン
サーフアン4を強力に駆動しシヨーケース内の冷
却を速やかに行なう。この場合その回転が徐々に
上昇するため始動時の起動電流は高い周波数まで
上昇させるに拘らず従来のように過大に流さずに
起動させることができる。 Further explaining the control with reference to Fig. 3, when the power switch 9 is turned on, the output frequency is gradually increased (see a), and when the temperature inside the show case is high, it is possible to increase the output frequency from the normal operating range (30 to 50 Hz as an example in the figure). The compressor 2 and condenser fan 4 are powerfully driven by this high frequency output to quickly cool the inside of the show case. In this case, since the rotation gradually increases, even though the starting current at starting is increased to a high frequency, the starting current can be started without flowing excessively as in the conventional case.
そしてシヨーケース内温度が設定温度K近くの
制御範囲K′まで低下すると出力周波数をc点に
示すように定常運転範囲(50〜30Hz)まで落し制
御する。負荷及び設定温度によつてはそのまま一
定の温度保持が可能であり、電流もdに示すよう
に低く保つことができる。 When the temperature inside the show case falls to a control range K' near the set temperature K, the output frequency is controlled to drop to the steady operating range (50 to 30 Hz) as shown at point c. Depending on the load and set temperature, it is possible to maintain a constant temperature, and the current can also be kept low as shown in d.
負荷の低減により設定冷却温度制御範囲以下
K″以下となると温度調節器(温度センサー7及
び制御回路8)により一旦インバータ1の出力を
なくし(e点参照)、次いでシヨーケース内温度
が設定冷却温度Kに到達すると再びインバータ1
の作動が始まり爾後オン−オフ的制御となるよう
制御される。この場合においてもそのオン起動時
において前述同様徐々にインバータ出力が増える
ので起動電流は従来のように大きくはならない。 Below the set cooling temperature control range due to load reduction
K'' or lower, the temperature controller (temperature sensor 7 and control circuit 8) temporarily eliminates the output of inverter 1 (see point e), and then when the temperature inside the case reaches the set cooling temperature K, inverter 1 is turned off again.
The operation starts and is then controlled in an on-off manner. In this case as well, the inverter output gradually increases at the time of ON startup as described above, so the startup current does not become as large as in the conventional case.
そして既にある程度低温になつているのでその
起動時最高周波数はインバータの前記定常運転範
囲の低位制御で済む。コンデンサーフアン4の回
転もコンプレツサー同様コントロールされるため
熱風による不快感も回転制限のため減少し、又コ
ンデンサーの目詰りも抑え得る。 Since the temperature has already reached a certain level, the maximum frequency at startup can be controlled to a low level within the steady operation range of the inverter. Since the rotation of the condenser fan 4 is controlled in the same way as the compressor, the discomfort caused by hot air is reduced due to rotation restriction, and clogging of the condenser can also be suppressed.
以上説明のように本考案はインバータを使用し
始動時コンプレツサー及びコンデンサーフアンの
各モータ駆動電力周波数を定常運転範囲より高い
周波数まで上げて急速冷却を計ると共にその周波
数上昇を徐々に行なわせることにより過大な突入
電流(ラツシユカレント)の生起をなくし、又継
続運転中のオン−オフ的作動時においても衝撃的
な電流増大をなくすると共に低負荷運転で済ませ
るようにしたもので、従来のものが定格周波数制
御のオン−オフ的作動(第3図X参照)であり、
オンの度毎に過大な突入電流が流れ、電流損失大
であり、又機器類の損耗も大である等の各種問題
を有していたに対し、本考案は該問題点を解消し
うるもので効果大なるものである。 As explained above, the present invention uses an inverter to increase the driving power frequency of each motor of the compressor and condenser fan to a frequency higher than the normal operating range at startup to achieve rapid cooling. This eliminates the generation of rush current, eliminates the sudden increase in current even during on-off operation during continuous operation, and allows low-load operation, which is superior to conventional products. It is an on-off operation of rated frequency control (see Figure 3 X),
There were various problems such as excessive inrush current flowing every time it was turned on, large current loss, and large wear and tear on equipment, but this invention can solve these problems. It is very effective.
附図は本考案の実施例を説明するもので、第1
図は冷蔵シヨーケースの背面図、第2図は作動回
路例の説明図、第3図はインバータの作動例説明
図である。
1……インバータ、2……コンプレツサー、3
……コンデンサー、4……コンデンサーフアン、
5……膨張器、6……冷却器、7……温度センサ
ー、8……制御回路、9……電源スイツチ。
The attached drawings are for explaining the embodiment of the present invention.
2 is an explanatory diagram of an example of an operating circuit, and FIG. 3 is an explanatory diagram of an example of an inverter's operation. 1...Inverter, 2...Compressor, 3
...Condenser, 4...Condenser fan,
5... Expander, 6... Cooler, 7... Temperature sensor, 8... Control circuit, 9... Power switch.
Claims (1)
レツサー駆動モータ及び又はコンデンサーフアン
駆動モータの駆動回路に、起動時は低回転より高
回転に徐々に上昇させるよう徐々に周波数を上昇
させるインバータよりなる回転速度変速機構と、
該回転速度変速機構をケース内温度が設定冷却温
度範囲より高いときの起動時は電源周波数より高
い周波数での回転とし設定冷却温度範囲に達すれ
ば定常運転範囲の周波数に落し設定冷却温度範囲
以下となればモータ駆動を停止させるようコント
ロールする温度センサーと制御回路よりなるコン
トロール装置を組入れたことを特徴とする冷蔵又
は冷凍シヨーケース。 A rotation speed change mechanism including an inverter for gradually increasing the frequency of a compressor drive motor and/or a condenser fan drive motor used in a refrigerating or freezing case so as to gradually increase the rotation speed from a low rotation speed at start-up to a high rotation speed;
The rotational speed change mechanism rotates at a frequency higher than the power supply frequency when started when the temperature inside the case is higher than the set cooling temperature range, drops to a frequency within the normal operating range when the temperature reaches the set cooling temperature range, and stops the motor drive when the temperature falls below the set cooling temperature range. This refrigerated or freezer case is characterized by incorporating a control device consisting of a temperature sensor and a control circuit that controls the rotational speed change mechanism so that the rotational speed change mechanism rotates at a frequency higher than the power supply frequency when started when the temperature inside the case is higher than the set cooling temperature range, drops to a frequency within the normal operating range when the temperature reaches the set cooling temperature range, and stops the motor drive when the temperature falls below the set cooling temperature range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4262583U JPS59148578U (en) | 1983-03-24 | 1983-03-24 | Refrigerated or frozen case |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4262583U JPS59148578U (en) | 1983-03-24 | 1983-03-24 | Refrigerated or frozen case |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59148578U JPS59148578U (en) | 1984-10-04 |
JPS6349667Y2 true JPS6349667Y2 (en) | 1988-12-20 |
Family
ID=30173159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4262583U Granted JPS59148578U (en) | 1983-03-24 | 1983-03-24 | Refrigerated or frozen case |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59148578U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002288726A (en) * | 2001-03-28 | 2002-10-04 | Sanyo Electric Co Ltd | Automatic vending machine control device |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61235664A (en) * | 1985-04-11 | 1986-10-20 | 三洋電機株式会社 | Method of operating cold storage |
JP4543569B2 (en) * | 2001-03-14 | 2010-09-15 | 富士電機リテイルシステムズ株式会社 | Vending machine controller |
JP2009079785A (en) * | 2007-09-25 | 2009-04-16 | Daiwa Industries Ltd | Refrigerator and its operation control method |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55123966A (en) * | 1979-03-19 | 1980-09-24 | Sanyo Electric Co | Input controller for electric motor for compressor of refrigeration system |
-
1983
- 1983-03-24 JP JP4262583U patent/JPS59148578U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55123966A (en) * | 1979-03-19 | 1980-09-24 | Sanyo Electric Co | Input controller for electric motor for compressor of refrigeration system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002288726A (en) * | 2001-03-28 | 2002-10-04 | Sanyo Electric Co Ltd | Automatic vending machine control device |
Also Published As
Publication number | Publication date |
---|---|
JPS59148578U (en) | 1984-10-04 |
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