JPH05141845A - Dew-proof heater device for frozen and refrigerated case - Google Patents
Dew-proof heater device for frozen and refrigerated caseInfo
- Publication number
- JPH05141845A JPH05141845A JP3308102A JP30810291A JPH05141845A JP H05141845 A JPH05141845 A JP H05141845A JP 3308102 A JP3308102 A JP 3308102A JP 30810291 A JP30810291 A JP 30810291A JP H05141845 A JPH05141845 A JP H05141845A
- Authority
- JP
- Japan
- Prior art keywords
- dew
- showcase
- heater
- proof heater
- proof
- 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.)
- Granted
Links
- 230000020169 heat generation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Freezers Or Refrigerated Showcases (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷凍，冷蔵ショーケー
スに装備した防露ヒータ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dew-proof heater device mounted on a freezing or refrigerating showcase.
【０００２】[0002]
【従来の技術】冷気循環式オープンショーケースは保冷
運転時に庫内が低温に保たれるが、庫内と周囲との境界
にある冷気吹出ハニカム，冷気吸込グリルなどの部分に
は周囲の湿り空気が触れて結露が生じ、庫内，通路など
に滴下する。そこで、一般にショーケースでは結露発生
箇所（冷気吹出ハニカム，冷気吸込グリルなど）に防露
ヒータを布設し、ショーケースの運転中に通電加熱して
結露の発生を防ぐ対策が施されている。2. Description of the Related Art In a cold air circulation type open showcase, the inside of the refrigerator is kept at a low temperature during the cold preservation operation, but the surrounding areas such as the cold air blowout honeycomb and the cold air suction grille have humid air around them. When it touches, dew condensation occurs and it drips inside the chamber, aisle, etc. Therefore, generally, in a showcase, a dew-proof heater is laid at a dew condensation-occurring portion (such as a cold-air blowing honeycomb or a cold-air suction grill), and measures are taken to prevent dew-condensation by electrically heating the showcase during operation.
【０００３】図２は防露ヒータを装備した多段形オープ
ンショーケースの構成図である。図において、１は前面
開放形のケース本体、２は庫内の商品陳列棚、３は冷気
通風ダクト４に収設した冷凍機のエバポレータ、５は送
風ファン、６は冷気エアカーテンの吹出口、７は吸込
口、８が冷気エアカーテンの吹出口６の箇所に布設した
防露ヒータであり、該防露ヒータ８はショーケース内の
端子台を介して電源に接続されている。なお、図示例は
冷蔵仕様のショーケースであり、冷凍仕様のショーケー
スでは冷気エアカーテンの吹出口の他にエアカーテンの
吸込口グリル，庫内の天井パネルなどにも防露ヒータが
布設されている。FIG. 2 is a block diagram of a multi-stage open showcase equipped with a dew-proof heater. In the figure, 1 is a front open type case main body, 2 is a product display shelf in a refrigerator, 3 is an evaporator of a refrigerator housed in a cool air ventilation duct, 5 is a blower fan, 6 is an outlet of a cool air curtain, Reference numeral 7 is a suction port, and 8 is a dew-proof heater laid at a position of the outlet 6 of the cool air curtain. The dew-proof heater 8 is connected to a power source through a terminal block in the showcase. The illustrated example is a refrigerated showcase. In the frozen showcase, dew-proof heaters are installed not only on the outlet of the cool air curtain but also on the inlet grill of the air curtain and the ceiling panel in the cabinet. There is.
【０００４】ところで、一般にショーケースで使用する
防露ヒータの容量は数百ワット程度であってショーケー
スの全消費電力のうち防露ヒータの占める割合は無視で
きず、省電力の観点からもヒータの容量を最適化するこ
とが望まれる。かかる点、従来ではショーケースに装備
する防露ヒータの容量を決定する方法として、仕様温度
の異なるショーケースごとに容量の異なる何種類かのヒ
ータを用意して実装し、標準周囲条件の下で実際に通電
加熱して結露発生状態を調べる。そして、そのテスト結
果からショーケースの仕様温度に最適なヒータを選んで
標準装備のヒータの容量を決めるようにしている。By the way, generally, the capacity of the dew-proof heater used in a showcase is about several hundred watts, and the ratio of the dew-proof heater to the total power consumption of the showcase cannot be ignored. It is desirable to optimize the capacity of the. In this regard, conventionally, as a method of determining the capacity of the dew-proof heater installed in a showcase, several kinds of heaters with different capacities are prepared and mounted for each showcase with a different specification temperature, and are mounted under standard ambient conditions. Actually energize and heat to check the state of dew condensation. Then, from the test results, the optimum heater for the specification temperature of the showcase is selected to determine the capacity of the standard heater.
【０００５】[0005]
【発明が解決しようとする課題】ところで、冷蔵，冷凍
ショーケースは機種によって仕様温度が異なることから
多機種のショーケースを生産する場合には、各機種の仕
様温度別に容量の異なる何種類もの防露ヒータを用意し
おかなければならず、このために部品管理，組立工程を
含めたショーケースの生産管理が厄介となる。また、特
に標準周囲条件を超える高温，多湿な周囲条件の環境で
ショーケースを使用する場合には、特別な措置として防
露ヒータをショーケース据付先の周囲条件に適合したも
のに交換する面倒な作業が必要となる。By the way, since refrigerated / frozen showcases have different specification temperatures depending on the model, in the case of producing many kinds of showcases, it is necessary to protect the showcases having different capacities according to the specification temperature of each model. A dew heater must be prepared, which makes the production management of the showcase including parts management and assembly process difficult. Also, especially when using the showcase in an environment of high temperature and high humidity that exceeds the standard ambient conditions, it is troublesome to replace the dew-proof heater with one that meets the ambient conditions of the showcase installation location as a special measure. Work is required.
【０００６】本発明は上記の点にかんがみなされたもの
であり、その目的は一種類のヒータで仕様温度の異なる
各機種のショーケース，および過酷な周囲条件にも対応
できる防露ヒータ装置を提供することにある。The present invention has been made in view of the above points, and an object thereof is to provide a showcase of each model having different specification temperatures with one type of heater and a dew-proof heater device capable of coping with harsh ambient conditions. To do.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の防露ヒータ装置においては、ショーケース
の結露発生箇所に布設した防露ヒータに対し、ショーケ
ースの仕様温度, 周囲条件に応じてヒータの発熱に必要
な電力を調節するコントローラを備えるものとする。In order to achieve the above object, in the dew-proof heater device of the present invention, the dew-proof heater installed at the dew condensation-occurring portion of the showcase has a specification temperature of the showcase and ambient conditions. A controller for adjusting the electric power required for heat generation of the heater is provided.
【０００８】ここで、前記のコントローラは、防露ヒー
タへの給電電圧を可変調節する電圧調節器であり、ま
た、周囲条件の変動に対応してヒータの電力を最適値に
調節する自動制御機能を備えて実施することができる。Here, the controller is a voltage regulator that variably adjusts the power supply voltage to the dew-proof heater, and an automatic control function that adjusts the electric power of the heater to an optimum value in response to changes in ambient conditions. Can be implemented.
【０００９】[0009]
【作用】上記の構成において、ショーケースの電源電圧
を一定（ＡＣ１００Ｖ，あるいは２００Ｖ）として、コ
ントローラを調節操作してその出力電圧を変えることに
より防露ヒータの発熱量が変化する。したがって、ショ
ーケースの仕様温度に合わせてコントローラの出力電圧
を調節ダイアルなどであらかじめ最適値に設定しておく
ことにより、一種類の防露ヒータを標準装備品として用
意するだけで、仕様温度の異なる各機種のショーケース
にも適正に対応できる。また、特に過酷な周囲条件でシ
ョーケースを運転する場合には、コントローラの出力電
圧を初期設定値よりも若干高めに調節することで即応で
きる。In the above construction, the heat generation amount of the dew-proof heater is changed by adjusting the output voltage by adjusting the controller while keeping the power supply voltage of the showcase constant (AC 100V or 200V). Therefore, by adjusting the output voltage of the controller according to the specification temperature of the showcase to the optimum value in advance using a dial, you can prepare different types of dew-proof heaters as standard equipment and obtain different specifications. Appropriate for the showcase of each model. Further, when the showcase is operated under particularly severe ambient conditions, it is possible to respond immediately by adjusting the output voltage of the controller to be slightly higher than the initial set value.
【００１０】また、前記のコントローラについては、調
節ダイアルによる調節機能に加えて、センサで計測した
周囲温度，周囲湿度，庫内温度の検出値を基に、出力電
圧を可変調節する自動制御機能を持たせることで、周囲
条件の変動にも即応できる防露機能，および省電力効果
が得られる。In addition to the adjustment function by the adjustment dial, the controller has an automatic control function for variably adjusting the output voltage based on the detected values of the ambient temperature, the ambient humidity and the inside temperature measured by the sensor. By having it, a dew-proof function that can respond quickly to changes in ambient conditions and a power-saving effect can be obtained.
【００１１】[0011]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。図１において、防露ヒータ８と電源９との間には本
発明により新た追加装備した防露ヒータ用のコントロー
ラ１０が接続されている。このコントローラ１０は例え
ばインバータ制御により出力電圧Ｅ（防露ヒータ８の電
圧）を可変調節する電圧調節器であり、マニュアル操作
の調節ダイアル１０ａを備えている。かかる構成で、調
節ダイアル１０ａを操作すると、コントローラ１０の出
力電圧Ｅが変わり、これに相応して防露ヒータ８の発熱
量が変化する。したがって、ショーケースの仕様温度に
合わせてあらかじめコントローラ１０の出力電圧Ｅを適
正値に設定しておくことにより、標準周囲条件の下では
防露ヒータ８での過剰な電力消費を抑えつつショーケー
スの露付き発生を的確に防止できる。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, between the dew-proof heater 8 and the power source 9, a controller 10 for the dew-proof heater newly added according to the present invention is connected. The controller 10 is a voltage controller that variably adjusts the output voltage E (voltage of the dew-proof heater 8) by inverter control, for example, and includes a manually operated adjustment dial 10a. When the adjustment dial 10a is operated with such a configuration, the output voltage E of the controller 10 changes, and the heat generation amount of the dew-proof heater 8 changes correspondingly. Therefore, by setting the output voltage E of the controller 10 to an appropriate value in advance according to the specification temperature of the showcase, under the standard ambient conditions, excessive power consumption of the dew-proof heater 8 can be suppressed and the showcase temperature can be reduced. The occurrence of dew can be accurately prevented.
【００１２】また、図示実施例のコントローラ１０は、
前記の調節ダイアル１０ａによる調節機能の他に、ショ
ーケースの運転制御部（マイクロコンピュータ）１１か
ら与えられる調節信号で自動的に出力電圧Ｅを最適値に
調節制御する機能を備えている。すなわち、運転制御部
１１には各種センサで検出した周囲温度，周囲湿度，庫
内温度が入力され、このデータを基に運転制御部１１は
周囲条件を演算し、コントローラ１０の出力電圧Ｅがそ
の時の周囲条件に対応した適正値となるように制御する
か、あるいは適当なサイクルでコントローラ１０の出力
をＯＮ−ＯＦＦを繰り返すように制御する。これによ
り、人手の調節に頼ることなくショーケースの周囲条件
の変動に即応して防露ヒータの発熱量を適正に調節する
ことができる。Further, the controller 10 of the illustrated embodiment is
In addition to the adjustment function by the adjustment dial 10a, the output voltage E is automatically adjusted to an optimum value by an adjustment signal provided from the operation control unit (microcomputer) 11 of the showcase. That is, the ambient temperature, ambient humidity, and internal temperature detected by various sensors are input to the operation control unit 11, the operation control unit 11 calculates the ambient conditions based on this data, and the output voltage E of the controller 10 is then calculated. The output of the controller 10 is controlled to be turned on and off repeatedly at an appropriate cycle. This makes it possible to properly adjust the heat generation amount of the dew-proof heater in response to changes in the ambient conditions of the showcase without depending on manual adjustment.
【００１３】[0013]
【発明の効果】本発明の防露ヒータ装置は以上説明した
ように構成されているので、次記の効果を奏する。 （１）仕様温度の異なる各機種のショーケースに対し、
一種類の防露ヒータを標準品として用意するだけで各機
種のショーケースに対応することができ、これにより部
品の在庫管理，生産工程の簡便化が図れる。Since the dew proof heater device of the present invention is constructed as described above, it has the following effects. (1) For showcases of different models with different specification temperatures,
By preparing one type of dew-proof heater as a standard product, it is possible to deal with each model's showcase, and this makes it possible to manage parts inventory and simplify the production process.
【００１４】（２）ショーケースを過酷な周囲条件の下
で運転する場合でも、防露ヒータを容量の大きなヒータ
に交換することなく、その時の周囲条件に合わせてコン
トローラを調節することで即応できる。 （３）また、防露ヒータのコントローラをショーケース
の運転制御部に連動させ、その時のショーケースの周囲
条件に合わせて出力を調節することにより、人手に頼る
ことなる常に適正な最適な状態で防露ヒータを通電制御
して適正な防露性と省電力効果が得られる。(2) Even when the showcase is operated under harsh ambient conditions, it is possible to immediately respond by adjusting the controller according to the ambient conditions at that time without replacing the dew-proof heater with a heater having a large capacity. . (3) Further, by interlocking the controller of the dew-proof heater with the operation control section of the showcase and adjusting the output in accordance with the ambient conditions of the showcase at that time, it depends on human hands, and in an always appropriate and optimum state. The dew-proof heater is energized and controlled, and proper dew-proof property and power saving effect can be obtained.
【図１】本発明の実施例による防露ヒータ装置の回路図FIG. 1 is a circuit diagram of a dew-proof heater device according to an embodiment of the present invention.
【図２】防露ヒータを装備した多段形オープンショーケ
ースの構成図[Figure 2] Configuration diagram of a multi-stage open showcase equipped with a dew-proof heater
８ 防露ヒータ ９ 電源 １０ コントローラ １１ 運転制御部 8 Dew-proof heater 9 Power supply 10 Controller 11 Operation controller
Claims (3)
露ヒータに対し、ショーケースの仕様温度, 周囲条件に
応じてヒータの発熱に必要な電力を調節するコントロー
ラを備えたことを特徴とする冷凍, 冷蔵ショーケースの
防露ヒータ装置。1. A controller for adjusting the electric power required for heat generation of the heater according to the specification temperature of the showcase and the ambient conditions, for the dew-proof heater installed at the dew condensation occurrence point of the showcase. Dew-proof heater device for freezing and refrigerating showcases.
コントローラが防露ヒータへの給電電圧を可変調節する
電圧調節器であることを特徴とする冷凍, 冷蔵ショーケ
ースの防露ヒータ装置。2. The dew-proof heater device according to claim 1,
A dew-proof heater device for a refrigerating / refrigerating showcase, characterized in that the controller is a voltage regulator that variably adjusts the power supply voltage to the dew-proof heater.
コントローラが周囲条件の変動に対応してヒータの電力
を最適値に調節する自動制御機能を備えていることを特
徴とする冷凍, 冷蔵ショーケースの防露ヒータ装置。3. The dew-proof heater device according to claim 1,
A dew-free heater device for a refrigerating / refrigerating showcase, characterized in that the controller has an automatic control function for adjusting the electric power of the heater to an optimum value in response to fluctuations in ambient conditions.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03308102A JP3102653B2 (en) | 1991-11-25 | 1991-11-25 | Dew-proof heater device for freezing and refrigerated showcases |
| KR1019920003166A KR0130888B1 (en) | 1991-11-25 | 1992-02-28 | Dew heater heater for refrigeration and refrigeration showcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03308102A JP3102653B2 (en) | 1991-11-25 | 1991-11-25 | Dew-proof heater device for freezing and refrigerated showcases |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05141845A true JPH05141845A (en) | 1993-06-08 |
| JP3102653B2 JP3102653B2 (en) | 2000-10-23 |
Family
ID=17976894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03308102A Expired - Lifetime JP3102653B2 (en) | 1991-11-25 | 1991-11-25 | Dew-proof heater device for freezing and refrigerated showcases |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3102653B2 (en) |
| KR (1) | KR0130888B1 (en) |
-
1991
- 1991-11-25 JP JP03308102A patent/JP3102653B2/en not_active Expired - Lifetime
-
1992
- 1992-02-28 KR KR1019920003166A patent/KR0130888B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP3102653B2 (en) | 2000-10-23 |
| KR0130888B1 (en) | 1998-04-28 |
| KR930010505A (en) | 1993-06-22 |
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