JPH04203784A - Refrigerating plant - Google Patents
Refrigerating plantInfo
- Publication number
- JPH04203784A JPH04203784A JP32925490A JP32925490A JPH04203784A JP H04203784 A JPH04203784 A JP H04203784A JP 32925490 A JP32925490 A JP 32925490A JP 32925490 A JP32925490 A JP 32925490A JP H04203784 A JPH04203784 A JP H04203784A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- ultrasonic waves
- liquid
- fin
- frost
- 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
Links
- 238000010257 thawing Methods 0.000 claims abstract description 9
- 238000005057 refrigeration Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、冷凍装置における蒸発器の除霜手段に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a defrosting means for an evaporator in a refrigeration system.
従来の装置は、特開昭５７−１２２２７１号公報に記載
のように、伝熱面に衝撃を与えて付着した霜を除去する
ことが論じられていた。As described in Japanese Patent Application Laid-open No. 57-122271, it has been discussed that a conventional device removes adhering frost by applying an impact to a heat transfer surface.
上記従来技術では、霜を完全に除去するには伝熱面に強
い衝撃力を加える必要があり、伝熱管やフィンが破損す
る恐れがあった。In the above-mentioned conventional technology, it is necessary to apply a strong impact force to the heat transfer surface in order to completely remove frost, and there is a risk that the heat transfer tubes and fins may be damaged.
本発明の目的は蒸発器にダメージを与えることなく、蒸
発器に付着した霜を完全に除去することにある。An object of the present invention is to completely remove frost adhering to the evaporator without damaging the evaporator.
上記目的を達成するために、本発明は、従来の蒸発器を
加熱し霜を融解する除霜方法に加え、蒸発器に超音波発
生装置を取付け、除霜運転時に蒸発器に超音波を照射す
るようにしたものである。In order to achieve the above object, the present invention, in addition to the conventional defrosting method of heating the evaporator to melt the frost, attaches an ultrasonic generator to the evaporator and irradiates the evaporator with ultrasonic waves during defrosting operation. It was designed to do so.
除霜運転時に、超音波発生装置より発射された超音波は
、空気中を伝播して蒸発器に付着した水滴に照射される
。それによって水滴は振動を起こし蒸発器の表面から剥
がれ落ちる。また、超音波を照射された水滴はその液体
中に過圧と負圧が生じ、この負圧によって液体が引き裂
かれてキャビテーションが発生する。このキャビテーシ
ョン気泡が破裂する際に衝撃波が発生し、この時の衝撃
力が水滴の剥離現象を促進する。During defrosting operation, ultrasonic waves emitted from the ultrasonic generator propagate through the air and are applied to water droplets attached to the evaporator. This causes the water droplets to vibrate and fall off the evaporator surface. In addition, overpressure and negative pressure are generated in the liquid of water droplets irradiated with ultrasonic waves, and the liquid is torn apart by this negative pressure, causing cavitation. Shock waves are generated when these cavitation bubbles burst, and the impact force at this time promotes the separation of water droplets.
それによって、蒸発器の表面に付着した水滴を完全に除
去することが出来る。Thereby, water droplets adhering to the surface of the evaporator can be completely removed.
以下、本発明の一実施例を第１図に示す。第１図は本発
明による蒸発器の構成を表わしており、フィン付コイル
蒸発器１．ファン２、及び超音波発生装置３により成り
、超音波発生袋Ｍ３は除霜時のドレンが、直接、落下し
てかからないようにフィン付コイル蒸発器１の鉛直方向
上側に設置されている。An embodiment of the present invention is shown in FIG. 1 below. FIG. 1 shows the configuration of an evaporator according to the present invention, in which a finned coil evaporator 1. The ultrasonic generation bag M3 is made up of a fan 2 and an ultrasonic generator 3, and is installed above the finned coil evaporator 1 in the vertical direction so that the drain during defrosting does not fall directly onto it.
次に本発明の動作について説明する。冷凍装置運転中フ
ィン付コイル蒸発器１に着霜した場合、ホットガスデフ
ロスト装置（図示せず）等によりフィン付コイル蒸発器
１を加熱し、霜を融解させる。この時、超音波発生装置
３の電源をオンし、超音波をフィン付コイル蒸発器１に
照射する。それによってフィン付コイル蒸発器１に付着
した水滴は振動を起こし剥がれ落ちる。また、超音波を
照射された水滴はその液体中に過圧と負圧が生じ、この
負圧によって液体が引き裂かれてキャビテーションが発
生する。このキャビテーション気泡が破裂する際に衝撃
波が発生し、この時の衝撃力が水滴の剥離現象を促進し
、これによりフィン付コイル蒸発器ｌの表面に付着した
水滴を完全に除去することが出来る。Next, the operation of the present invention will be explained. If frost forms on the finned coil evaporator 1 during operation of the refrigeration system, the finned coil evaporator 1 is heated by a hot gas defrost device (not shown) or the like to melt the frost. At this time, the power of the ultrasonic generator 3 is turned on and the finned coil evaporator 1 is irradiated with ultrasonic waves. As a result, water droplets adhering to the finned coil evaporator 1 are vibrated and peeled off. In addition, overpressure and negative pressure are generated in the liquid of water droplets irradiated with ultrasonic waves, and the liquid is torn apart by this negative pressure, causing cavitation. Shock waves are generated when the cavitation bubbles burst, and the impact force at this time promotes the separation of water droplets, thereby making it possible to completely remove the water droplets adhering to the surface of the finned coil evaporator l.
本発明によれば、除霜運転終了時に蒸発器には水滴が残
存してなくなり、冷却運転再開後の着霜量を低減するこ
とが出来るから、蒸発器の伝熱性能低下の抑制による性
能向上の効果がある。また、除霜運転間隔を広げること
が出来るので、冷凍装置の信頼性を向上することが出来
る。According to the present invention, no water droplets remain in the evaporator at the end of the defrosting operation, and the amount of frost formed after restarting the cooling operation can be reduced, thereby improving performance by suppressing deterioration in heat transfer performance of the evaporator. There is an effect. Furthermore, since the defrosting operation interval can be extended, the reliability of the refrigeration system can be improved.
第１図は本発明による蒸発器の一実施例を示す説明図で
ある。FIG. 1 is an explanatory diagram showing one embodiment of an evaporator according to the present invention.
Claims (1)
において、 前記蒸発器に超音波発生装置を取り付け、除霜運転時に
前記蒸発器に超音波を照射することを特徴とする冷凍装
置。[Claims] 1. In a refrigeration system including a compressor, a condenser, an expansion valve, and an evaporator, an ultrasonic generator is attached to the evaporator, and the evaporator is irradiated with ultrasonic waves during defrosting operation. A refrigeration device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32925490A JPH04203784A (en) | 1990-11-30 | 1990-11-30 | Refrigerating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32925490A JPH04203784A (en) | 1990-11-30 | 1990-11-30 | Refrigerating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04203784A true JPH04203784A (en) | 1992-07-24 |
Family
ID=18219389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32925490A Pending JPH04203784A (en) | 1990-11-30 | 1990-11-30 | Refrigerating plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04203784A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6420080B1 (en) | 2000-10-17 | 2002-07-16 | Fuji Xerox, Co., Ltd | Process for forming image |
| CN102519184A (en) * | 2011-12-04 | 2012-06-27 | 苏州方暨圆节能科技有限公司 | Energy-saving defrosting structure of air conditioner |
| JP2020139637A (en) * | 2019-02-26 | 2020-09-03 | Toa株式会社 | Device of dropping and removing liquid by sound, and method of dropping and removing liquid by sound |
-
1990
- 1990-11-30 JP JP32925490A patent/JPH04203784A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6420080B1 (en) | 2000-10-17 | 2002-07-16 | Fuji Xerox, Co., Ltd | Process for forming image |
| CN102519184A (en) * | 2011-12-04 | 2012-06-27 | 苏州方暨圆节能科技有限公司 | Energy-saving defrosting structure of air conditioner |
| JP2020139637A (en) * | 2019-02-26 | 2020-09-03 | Toa株式会社 | Device of dropping and removing liquid by sound, and method of dropping and removing liquid by sound |
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