JP2009008324A - Drain evaporator - Google Patents

Drain evaporator Download PDF

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Publication number
JP2009008324A
JP2009008324A JP2007170160A JP2007170160A JP2009008324A JP 2009008324 A JP2009008324 A JP 2009008324A JP 2007170160 A JP2007170160 A JP 2007170160A JP 2007170160 A JP2007170160 A JP 2007170160A JP 2009008324 A JP2009008324 A JP 2009008324A
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drain
drain pipe
evaporator
heater
water
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JP4845216B2 (en
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Yuji Hattori
祐司 服部
Kazufumi Suehiro
和史 末廣
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Nitto Kogyo Corp
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Nitto Kogyo Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain evaporator capable of preventing drain water from being scattered outside, preventing a drain pipe from being excessively heated, and preventing steam from reversely flowing without a trap on the drain pipe. <P>SOLUTION: The drain evaporator includes a blower fan 30 provided on a side wall on one side of an evaporation tank 3 of which a lower part is a drain tank 2 with a heater 21, and an exhaust port 40 provided on an opposite side wall. The drain pipe 5 for supplying the drain water to the drain evaporator is arranged between the heater 21 and the blower fan 30 to prevent water from being scattered outside. A lower end 50 of the drain pipe 5 is positioned in an air blowing area connecting the blower fan 30 and the exhaust port 40 so as to cool the drain pipe 5 and prevent reverse flow of the steam into the drain pipe 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電気電子機器収納キャビネット用の冷却装置から排出されるドレン水を蒸発させるために用いられるドレン蒸発器に関するものである。   The present invention relates to a drain evaporator used for evaporating drain water discharged from a cooling device for an electrical / electronic equipment storage cabinet.

電気電子機器収納キャビネットなどに組み込まれた冷却装置から排出されるドレン水は、キャビネット下方に排水されているが、排水が容易に行えないような場所では、ドレン蒸発器が用いられている。ドレン蒸発器としては、特許文献1に示されるように、ドレン水をヒータにより蒸発室内で蒸発させ、該蒸発室内の水分を含んだ空気を送風機により排出するものが知られている。   Drain water discharged from a cooling device incorporated in an electrical / electronic equipment storage cabinet or the like is drained below the cabinet, but a drain evaporator is used in a place where drainage cannot be easily performed. As a drain evaporator, as shown in Patent Document 1, there is known a drain evaporator that evaporates drain water in an evaporation chamber by a heater and discharges air containing moisture in the evaporation chamber by a blower.

しかし、特許文献1のドレン蒸発器はドレンパイプを排気口の近傍に配置していたために、ドレンパイプから落下するドレン水が排気口から外部に吹き飛び、周辺を濡らすことがあった。またヒータとドレンパイプとが近接されているため、ヒータによりドレンパイプが加熱され温度上昇し、ドレンパイプに接続される塩化ビニール製のホースを溶融させるおそれがあった。   However, since the drain evaporator of patent document 1 has arrange | positioned the drain pipe in the vicinity of an exhaust port, the drain water which falls from a drain pipe may blow off outside from an exhaust port, and may wet the periphery. Further, since the heater and the drain pipe are close to each other, the drain pipe is heated by the heater and the temperature rises, and there is a possibility that the vinyl chloride hose connected to the drain pipe is melted.

さらに、ヒータで蒸発した蒸気がドレンパイプを逆流することを防止するために、ドレンパイプにトラップを設けていたため、ドレンパイプの構造が複雑になりコスト上昇を招くという問題があった。
2004―125351号公報
Furthermore, in order to prevent the vapor evaporated by the heater from flowing back through the drain pipe, a trap is provided in the drain pipe, which causes a problem that the structure of the drain pipe becomes complicated and costs increase.
2004-125351

本発明は上記した従来の問題点を解決し、ドレン水が外部に飛散することがなく、ドレンパイプが過度に加熱されることがなく、ドレンパイプにトラップを設けなくても蒸気が逆流することがないドレン蒸発器を提供することを目的とするものである。   The present invention solves the above-mentioned conventional problems, the drain water does not scatter to the outside, the drain pipe is not excessively heated, and the steam flows backward without providing a trap in the drain pipe. It is an object of the present invention to provide a drain evaporator that does not have any.

上記の課題を解決するためになされた本発明は、下部をヒータ付きのドレンタンクとした蒸発槽の片側の側壁に送風ファンを設け、対向する側壁に排気口を設けたドレン蒸発器において、ドレン水を供給するドレンパイプを前記ヒータと送風ファンとの間に配置するとともに、ドレンパイプの下端を送風ファンと排気口とを結ぶ送風域内に位置させたことを特徴とするものである。なお請求項2のように、ヒータ上方に多数のスリットを配設した沸騰水飛散防止ガードを設けることが好ましい。また請求項3のように、ドレンパイプの下端を、羽根の回転方向を時計方向としたときに、2時から7時の間の範囲内に位置させることが好ましい。   In order to solve the above-mentioned problems, the present invention provides a drain evaporator in which a blower fan is provided on one side wall of an evaporation tank whose lower part is a drain tank with a heater, and an exhaust port is provided on an opposite side wall. A drain pipe for supplying water is disposed between the heater and the blower fan, and a lower end of the drain pipe is positioned in a blower area connecting the blower fan and the exhaust port. As in claim 2, it is preferable to provide a boiling water splash prevention guard provided with a number of slits above the heater. According to a third aspect of the present invention, it is preferable that the lower end of the drain pipe is positioned within a range between 2 o'clock and 7 o'clock when the rotation direction of the blades is clockwise.

本発明のドレン蒸発器ではドレンパイプをヒータと送風ファンとの間に配置したので、ドレンパイプと排気口との距離が離れることとなり、従来のようにドレン水が排気口から外部に飛散することがない。またドレンパイプはヒータの直上にないうえ、ドレンパイプの下端を送風ファンと排気口とを結ぶ送風域内に位置させたのでドレンパイプは冷却され、従来のように過度に加熱されることがない。   In the drain evaporator of the present invention, since the drain pipe is disposed between the heater and the blower fan, the distance between the drain pipe and the exhaust port is increased, and the drain water is scattered from the exhaust port to the outside as in the past. There is no. Further, since the drain pipe is not directly above the heater and the lower end of the drain pipe is positioned in the air blowing area connecting the air blowing fan and the exhaust port, the drain pipe is cooled and is not excessively heated as in the prior art.

しかも、送風によるベンチュリ効果によってドレンパイプの下端部分は負圧となり、ドレン蒸発器内にドレン水を導入しやすくなるとともに、蒸気の逆流も防止される。このため、従来のようにドレンパイプにトラップを設けなくとも蒸気が逆流することがない。   Moreover, the lower end portion of the drain pipe has a negative pressure due to the venturi effect caused by blowing air, facilitating the introduction of drain water into the drain evaporator, and preventing the backflow of steam. For this reason, steam does not flow backward even if a trap is not provided in the drain pipe as in the prior art.

また請求項2のように、蒸発槽のヒータ上方に多数のスリットを配設した沸騰水飛散防止ガードを設けることにより、蒸発室のドレン水が沸騰した際にも水の飛沫が飛散することがなく、蒸気のみを通すことができる。   Further, as in claim 2, by providing a boiling water splash prevention guard having a large number of slits disposed above the heater of the evaporation tank, water droplets can be scattered even when the drain water in the evaporation chamber boils. Without steam, only steam can pass through.

さらに、請求項3のように、ドレンパイプの下端を羽根の回転方向が時計方向になるように見たときに、2時から7時の間の範囲内に位置させれば、送風ファンによって生ずる旋回流の下向きの成分によって、ドレンパイプの下端部分により大きな負圧が作用することとなるので、ベンチュリ効果と相俟って、ドレン蒸発器内にドレン水をより効果的に導入できるうえに、蒸気の逆流もより的確に防止することができる。   Further, as in claim 3, when the lower end of the drain pipe is viewed in the clockwise direction of the blade, the swirl flow generated by the blower fan is positioned within the range between 2 o'clock and 7 o'clock. Due to the downward component, a large negative pressure acts on the lower end portion of the drain pipe. In combination with the venturi effect, drain water can be introduced more effectively into the drain evaporator, and Backflow can also be prevented more accurately.

次に、本発明の好ましい実施形態を図面に基いて詳細に説明する。
図1は本発明の実施形態のドレン蒸発器の斜視図、図2は断面図、図3は外観図、図4は分解斜視図である。
これらの図において、1は蒸発器の筺体であり、筺体1の内部には下部をドレンタンク2とした蒸発槽3が設けられている。蒸発槽3の片側の側壁には送風ファン30を設けてあり、対向する側壁4には排気口40が設けられている。送風ファン30は外気を吸引して蒸発槽3内に水平方向に送風し、図2に矢印で示す排気流を形成している。
Next, preferred embodiments of the present invention will be described in detail with reference to the drawings.
1 is a perspective view of a drain evaporator according to an embodiment of the present invention, FIG. 2 is a sectional view, FIG. 3 is an external view, and FIG. 4 is an exploded perspective view.
In these drawings, reference numeral 1 denotes a housing of an evaporator, and an evaporation tank 3 having a drain tank 2 as a lower portion is provided inside the housing 1. A blower fan 30 is provided on one side wall of the evaporation tank 3, and an exhaust port 40 is provided on the opposite side wall 4. The blower fan 30 sucks outside air and blows it horizontally into the evaporating tank 3 to form an exhaust flow indicated by arrows in FIG.

ドレンタンク2の内部には、ドレン水を蒸発させるヒータ21とフロート式の水位センサ22とが配置されている。水位センサ22はドレンタンク2に貯留されたドレン水量の水位を検知し、水位が上昇したときにヒータ21をオンとしてドレン水を加熱蒸発させるものである。ヒータ21はドレンタンク2の中心よりも排気口40に近い位置に配置されている。   Inside the drain tank 2, a heater 21 for evaporating the drain water and a float type water level sensor 22 are disposed. The water level sensor 22 detects the water level of the amount of drain water stored in the drain tank 2, and when the water level rises, the heater 21 is turned on to heat and drain the drain water. The heater 21 is disposed at a position closer to the exhaust port 40 than the center of the drain tank 2.

ヒータ21の上方には、沸騰水飛散防止ガード23が水平に配置されている。この沸騰水飛散防止ガード23には蒸気を通過させるが沸騰水の飛散を防止する多数のスリット24が透設されている。   Above the heater 21, a boiling water splash prevention guard 23 is disposed horizontally. The boiling water splash prevention guard 23 is provided with a number of slits 24 that allow vapor to pass but prevent boiling water from splashing.

本発明では、ドレン蒸発器にドレン水を導入するドレンパイプ5を、ヒータ21と送風ファン30との間に配置する。この実施形態では、ドレンパイプ5は送風ファン30の近傍に配置されている。このような配置によってドレンパイプ5と排気口40との距離を大きくし、ドレン水が排気口40から外部に飛散することを防止している。なお排気口40をルーバー構造としておけば、飛沫の飛散をより確実に防止することができる。   In the present invention, the drain pipe 5 for introducing drain water into the drain evaporator is disposed between the heater 21 and the blower fan 30. In this embodiment, the drain pipe 5 is disposed in the vicinity of the blower fan 30. With such an arrangement, the distance between the drain pipe 5 and the exhaust port 40 is increased, and the drain water is prevented from scattering from the exhaust port 40 to the outside. In addition, if the exhaust port 40 has a louver structure, it is possible to more reliably prevent splashing.

また本発明では、ドレンパイプ5の下端50を送風ファン30と排気口40とを結ぶ送風域内に位置させてある。ここで送風域とは、送風ファン30の送風口の外周と排気口40の外周とを円筒状に結んだ仮想領域を意味するものである。このような配置によってドレンパイプ5の下端50は冷却され、従来のように過度に加熱されることがないから、ドレンパイプ5に接続されたビニルホースが溶けることがない。   Moreover, in this invention, the lower end 50 of the drain pipe 5 is located in the ventilation area which connects the ventilation fan 30 and the exhaust port 40. As shown in FIG. Here, the air blowing area means a virtual area in which the outer periphery of the blowing port of the blowing fan 30 and the outer periphery of the exhaust port 40 are connected in a cylindrical shape. With such an arrangement, the lower end 50 of the drain pipe 5 is cooled and is not excessively heated as in the prior art, so that the vinyl hose connected to the drain pipe 5 does not melt.

またドレンパイプ5の下端50では送風の流速が大きく、図2に示すような送風によるベンチュリ効果によってその部分は負圧となる。このため、吸引効果によってドレン蒸発器内にドレン水を導入し易くなる。またドレンパイプ5の下端50が負圧となるためにドレンパイプ5の内部に圧力勾配が形成され、ドレンパイプ5への蒸気の逆流も防止される。このため、従来のようにドレンパイプにトラップを設ける必要がなく、コストダウンが可能となる。   Further, at the lower end 50 of the drain pipe 5, the flow rate of the air blow is large, and the portion becomes a negative pressure due to the venturi effect by the air blow as shown in FIG. For this reason, it becomes easy to introduce drain water into the drain evaporator due to the suction effect. Further, since the lower end 50 of the drain pipe 5 has a negative pressure, a pressure gradient is formed inside the drain pipe 5, and the backflow of steam to the drain pipe 5 is also prevented. For this reason, it is not necessary to provide a trap in the drain pipe as in the prior art, and the cost can be reduced.

さらに、ドレンパイプ5の下端50部分を、図7に示されるように、羽根の回転方向が時計方向になるように見たときに、2時から7時の間の範囲内に位置させることが好ましい。この範囲内では送風ファン30によって生ずる旋回流が下向きの成分を有し、ドレンパイプ5の下端50の部分を下向きに吸引してより大きな負圧を作用させることができる。   Furthermore, it is preferable that the lower end 50 portion of the drain pipe 5 is positioned within a range between 2 o'clock and 7 o'clock when the blades are rotated in the clockwise direction as shown in FIG. Within this range, the swirling flow generated by the blower fan 30 has a downward component, and the lower end 50 of the drain pipe 5 can be sucked downward to apply a larger negative pressure.

なお、その他の範囲では旋回流は上向きの成分を持つため、圧力の向きは図7に示すようにドレンパイプ5の下端50に向かって空気を押し込む作用を生じる正圧領域となる。図5はドレンパイプ5の下端50を負圧領域である6時の位置に配置した例、図6は3時の位置に配置した例である。   Since the swirling flow has an upward component in other ranges, the direction of the pressure is a positive pressure region in which air is pushed toward the lower end 50 of the drain pipe 5 as shown in FIG. FIG. 5 shows an example in which the lower end 50 of the drain pipe 5 is arranged at the 6 o'clock position, which is a negative pressure region, and FIG. 6 shows an example in which it is arranged at the 3 o'clock position.

このように構成された本発明のドレン蒸発器は、電気電子機器収納キャビネット用の冷却装置から排出されるドレン水を蒸発させるためにキャビネットの下部に設置されるもので、ドレン水はドレンパイプ5を通じてドレンタンク2内に流下し、水位が所定水位に達するとヒータ21がオンとなり、ドレン水は加熱されて蒸発し、排気流に乗って排気口40から外部に放出されることは従来品と特に変わらない。   The drain evaporator of the present invention configured as described above is installed at the lower part of the cabinet in order to evaporate the drain water discharged from the cooling device for the electrical / electronic equipment storage cabinet. When the water level reaches a predetermined water level, the heater 21 is turned on, the drain water is heated and evaporated, and is discharged to the outside through the exhaust port 40 along the exhaust flow. There is no particular change.

しかし前記したとおり、本発明ではドレンパイプ5と排気口40との間には距離があり、ドレンパイプ5から落下する水滴がそのまま排気口40から外部に飛散することはなく、特に沸騰水飛散防止ガード23を設けておけば、飛散防止効果をより確実にすることができる。   However, as described above, in the present invention, there is a distance between the drain pipe 5 and the exhaust port 40, and water drops falling from the drain pipe 5 are not directly scattered from the exhaust port 40 to the outside. If the guard 23 is provided, the scattering prevention effect can be further ensured.

またドレンパイプ5の下端50を送風ファン30と排気口40とを結ぶ送風域内に位置させ、ドレンパイプ5を冷却しているので加熱が防止され、またベンチュリ効果によってドレンパイプ5の下端50は負圧となり、ドレン蒸発器内にドレン水を導入し易くなるとともに、蒸気の逆流も防止されるから、従来のようにドレンパイプにトラップを設ける必要がなくなり、コストダウンを図ることができる。   Further, the lower end 50 of the drain pipe 5 is positioned in the air blowing area connecting the blower fan 30 and the exhaust port 40, and the drain pipe 5 is cooled, so that heating is prevented, and the lower end 50 of the drain pipe 5 is negative due to the venturi effect. Since it becomes pressure and it becomes easy to introduce drain water into the drain evaporator and the backflow of steam is prevented, it is not necessary to provide a trap in the drain pipe as in the prior art, and the cost can be reduced.

さらに、ドレンパイプ5の下端50を送風流の負圧領域に配置させることにより、ベンチュリ効果と相俟って下端50に大きな負圧力を与えることができるので、ドレン水の導入は増進され、蒸気の逆流も確実に防止できることとなる。   Further, by arranging the lower end 50 of the drain pipe 5 in the negative pressure region of the air flow, a large negative pressure can be applied to the lower end 50 in combination with the venturi effect, so that the introduction of drain water is promoted and steam is introduced. Therefore, it is possible to reliably prevent the backflow.

本発明のドレン蒸発器の斜視図である。It is a perspective view of the drain evaporator of this invention. 本発明のドレン蒸発器の断面図である。It is sectional drawing of the drain evaporator of this invention. 本発明のドレン蒸発器の外観図である。It is an external view of the drain evaporator of this invention. 本発明のドレン蒸発器の分解斜視図である。It is a disassembled perspective view of the drain evaporator of this invention. 負圧領域の上限にドレンパイプの下端を配置させた説明図である。It is explanatory drawing which has arrange | positioned the lower end of the drain pipe to the upper limit of a negative pressure area | region. 負圧領域の下限にドレンパイプの下端を配置させた説明図である。It is explanatory drawing which has arrange | positioned the lower end of the drain pipe to the minimum of a negative pressure area | region. 送風流の負圧領域と正圧領域を示す説明図である。It is explanatory drawing which shows the negative pressure area | region and positive pressure area | region of a ventilation flow.

符号の説明Explanation of symbols

1 筺体
2 ドレンタンク
3 蒸発槽
4 側壁
5 ドレンパイプ
21 ヒータ
22 水位センサ
23 沸騰水飛散防止ガード
24 スリット
30 送風ファン
40 排気口
50 下端
DESCRIPTION OF SYMBOLS 1 Housing 2 Drain tank 3 Evaporating tank 4 Side wall 5 Drain pipe 21 Heater 22 Water level sensor 23 Boiling water scattering prevention guard 24 Slit 30 Blower fan 40 Exhaust port 50 Lower end

Claims (3)

下部をヒータ付きのドレンタンクとした蒸発槽の片側の側壁に送風ファンを設け、対向する側壁に排気口を設けたドレン蒸発器において、ドレン水を供給するドレンパイプを前記ヒータと送風ファンとの間に配置するとともに、ドレンパイプの下端を送風ファンと排気口とを結ぶ送風域内に位置させたことを特徴とするドレン蒸発器。   In a drain evaporator provided with a blower fan on one side wall of the evaporation tank with the lower part as a drain tank with a heater and provided with an exhaust port on the opposite side wall, a drain pipe for supplying drain water is connected between the heater and the blower fan. A drain evaporator, wherein the drain evaporator is disposed in between and the lower end of the drain pipe is positioned in a blowing area connecting the blowing fan and the exhaust port. ヒータ上方に、多数のスリットを配設した沸騰水飛散防止ガードを設けたことを特徴とする請求項1記載のドレン蒸発器。   2. The drain evaporator according to claim 1, wherein a boiling water splash prevention guard having a large number of slits is provided above the heater. ドレンパイプの下端を、羽根の回転方向を時計方向としたときに、2時から7時の間の範囲内に位置させたことを特徴とする請求項1記載のドレン蒸発器。   The drain evaporator according to claim 1, wherein the lower end of the drain pipe is positioned in a range between 2 o'clock and 7 o'clock when the rotation direction of the blades is clockwise.
JP2007170160A 2007-06-28 2007-06-28 Drain evaporator Expired - Fee Related JP4845216B2 (en)

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JP4845216B2 JP4845216B2 (en) 2011-12-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017149751A1 (en) * 2016-03-04 2017-09-08 三菱電機株式会社 Refrigerator
EP3382303A1 (en) * 2017-03-27 2018-10-03 LG Electronics Inc. Defrost heat discharge system and refrigerator having the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1073365A (en) * 1996-08-30 1998-03-17 Apisute:Kk Drain water evaporator
JPH11257832A (en) * 1998-03-11 1999-09-24 Sanyo Electric Co Ltd Cooling storage chamber
JP2004125351A (en) * 2002-10-07 2004-04-22 Apisute:Kk Drain water evaporator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1073365A (en) * 1996-08-30 1998-03-17 Apisute:Kk Drain water evaporator
JPH11257832A (en) * 1998-03-11 1999-09-24 Sanyo Electric Co Ltd Cooling storage chamber
JP2004125351A (en) * 2002-10-07 2004-04-22 Apisute:Kk Drain water evaporator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017149751A1 (en) * 2016-03-04 2017-09-08 三菱電機株式会社 Refrigerator
EP3382303A1 (en) * 2017-03-27 2018-10-03 LG Electronics Inc. Defrost heat discharge system and refrigerator having the same
US10663213B2 (en) 2017-03-27 2020-05-26 Lg Electronics Inc. Defrost heat discharge system and refrigerator having the same

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