JP2005127568A - Water leakage detection system of water-cooling type heat exchanger - Google Patents

Water leakage detection system of water-cooling type heat exchanger Download PDF

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JP2005127568A
JP2005127568A JP2003361954A JP2003361954A JP2005127568A JP 2005127568 A JP2005127568 A JP 2005127568A JP 2003361954 A JP2003361954 A JP 2003361954A JP 2003361954 A JP2003361954 A JP 2003361954A JP 2005127568 A JP2005127568 A JP 2005127568A
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water
heat exchanger
drainage port
port
water level
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JP4233032B2 (en
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Hiroshi Gama
宏 蒲
Yuji Hattori
祐司 服部
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Nitto Kogyo Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water leakage detection system for draining dew condensation water and leaked water generated in a water-cooling type heat exchanger and detecting the water leakage accurately. <P>SOLUTION: A port 4 for draining a small quantity of water is provided at a bottom section 31 of a case 3 in the heat exchanger 1 by circulating cooling water to a radiator 11, a port 5 for draining a large quantity of water is provided at the upper position of the port 4 for drawing a small quantity of water, and a water level detection section 7 for detecting the water level between the port 4 for draining a small quantity of water and the port 5 for draining a large quantity of water is provided. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、分電盤、配電盤の内部を冷却するために使用する水冷式熱交換器の漏水検出システムに関するものである。   The present invention relates to a water leakage detection system for a water-cooled heat exchanger used for cooling the inside of a distribution board and a distribution board.

熱交換器は結露水等の内部に溜まった水を外部に排水するものとしては、熱交換器のケース底部にドレン孔を透設してこのドレン孔から排水するものや、ケース底部にドレンパンを配置してこのドレンパンに一定量のドレン水が溜まったらそれをフロートスイッチで検知してドレンポンプを作動させてドレン水を排水するものがある（例えば、特許文献１参照）。ところが、これらのものを水冷式熱交換器に使用した場合には、ラジエター等の配管に亀裂が発生して漏水した場合や途中の配管の接続部等より冷却水が漏水した場合にあってもこの漏水を結露水と一緒に排水するため、漏水が発生したことを検出することができない問題がある。
特開平６−１３７５８６号公報（図１） The heat exchanger drains the water accumulated inside the condensed water, etc. to the outside, drains through the drain hole at the bottom of the heat exchanger case, drains from this drain hole, or drain pan at the bottom of the case When a certain amount of drain water accumulates in this drain pan, it is detected by a float switch, and a drain pump is operated to drain the drain water (see, for example, Patent Document 1). However, when these are used in a water-cooled heat exchanger, even if a pipe such as a radiator cracks and leaks water, or if cooling water leaks from a connecting part of the pipe on the way, etc. Since this water leak is drained together with the dew condensation water, there is a problem that it is impossible to detect that the water leak has occurred.
JP-A-6-137586 (FIG. 1)

本発明は前記のような従来の問題点を解決して、結露水と漏水を排水できるうえ漏水を的確に検出できる水冷式熱交換器の漏水検出システムを提供することである。   The present invention solves the above-mentioned conventional problems and provides a water leakage detection system for a water-cooled heat exchanger that can drain condensed water and water leakage and can accurately detect water leakage.

本発明の水冷式熱交換器の漏水検出システムは、冷却水をラジエターに循環させてなる熱交換器のケースの底部に少量排水口を、また、該少量排水口より上部位置に大量排水口を設けたうえ、少量排水口と大量排水口との間の水位を検出する水位検出部を設けたことを特徴とするものを請求項１に記載の発明とし、また、この発明において、水位検出部がフロートスイッチであることとしたものを請求項２に記載の発明とする。さらに、これらの発明において、ケースの底部を貫通する筒部を設け、該筒部の上部に大量排水口に形成し、ケースの底部上面に接する該筒部の側面に少量排水口を形成したものを請求項３に記載の発明とする。   The leakage detection system for a water-cooled heat exchanger according to the present invention has a small amount of water outlet at the bottom of a heat exchanger case in which cooling water is circulated through a radiator, and a large amount of water outlet at a position above the small amount of water outlet. The invention according to claim 1, further comprising a water level detection unit for detecting a water level between the small amount drainage port and the large amount drainage port. The invention according to claim 2 is that in which is a float switch. Furthermore, in these inventions, a cylindrical portion penetrating the bottom of the case is provided, a large drainage port is formed at the top of the cylindrical portion, and a small drainage port is formed on the side surface of the cylindrical portion in contact with the upper surface of the bottom of the case Is the invention according to claim 3.

請求項１に記載した発明は、ケースの底部に少量排水口を、また、該少量排水口より上部位置に大量排水口を設けたものであるから、ラジエターに発生する結露水は少量排水口から外部に排水され、ラジエターの配管等に亀裂が発生して冷却水が漏水した場合や途中の配管の接続部等より冷却水が漏水した場合には、この漏水は少量排水口では排水しきれないので水位が上昇して、該少量排水口より上部位置に設けた大量排水口から外部に排水されるので、この熱交換器を取り付けた分電盤、配電盤の電気機器収納部に水が浸入する虞のないものである。また、少量排水口と大量排水口との間の水位を検出する水位検出部を設けているので、水位上昇を検出して漏水を検知することができる。   Since the invention described in claim 1 is provided with a small amount of water outlet at the bottom of the case and a large amount of water outlet above the small amount of water outlet, the dew condensation water generated in the radiator is from the small amount of water outlet. If the cooling water leaks due to external drainage and cracks in the radiator piping, etc., or if the cooling water leaks from the connecting part of the piping on the way, this leakage will not be drained through a small amount of drainage. Therefore, the water level rises and drains to the outside from the large drainage port provided above the small drainage port, so that water enters the electrical equipment storage part of the distribution board and distribution board to which this heat exchanger is attached. There is no fear. Moreover, since the water level detection part which detects the water level between a small amount outlet and a large amount outlet is provided, a water level rise can be detected and a water leak can be detected.

また、請求項２の発明は前記請求項１の発明において、水位検出部がフロートスイッチであるので、該フロートスイッチは結露水が流下時に飛散して当たっても誤作動することがなく、的確に水位上昇を検出して漏水を検知することができる。   Further, since the water level detection unit is a float switch in the invention of the first aspect, the float switch does not malfunction even when condensed water splashes and hits when flowing down. Water leakage can be detected by detecting an increase in water level.

さらに、請求項３の発明は前記請求項１及び２の発明において、ケースの底部を貫通する筒部を設け、該筒部の上部に大量排水口に形成し、ケースの底部上面に接する筒部の側面に少量排水口を形成したものであるから、少量排水口と大量排水口の終端排水路が筒部の下方となるので、排水が一箇所に纏まり排水後の処理が容易となる。また、少量排水口と大量排水口が同一の筒部に形成してあるので、製作が容易となる。   Further, the invention of claim 3 is the invention according to claim 1 or 2, wherein a cylindrical portion penetrating the bottom portion of the case is provided, a cylindrical drainage port is formed at the upper portion of the cylindrical portion, and is in contact with the upper surface of the bottom portion of the case. Since the small amount drainage port is formed on the side surface of the, the terminal drainage channel of the small amount drainage port and the large amount drainage port is located below the cylindrical portion, so that the drainage is gathered in one place and the post-drainage treatment becomes easy. Moreover, since the small amount drainage port and the large amount drainage port are formed in the same cylinder part, manufacture becomes easy.

次に、本発明の好ましい実施の形態を図面に基づき説明する。
１は分電盤、配電盤等の盤類２の外側面に取り付ける熱交換器であり、該熱交換器１は冷却水をラジエター１１に循環させて、該冷却水により冷却されたラジエター１１にファン１２により上方の空気取入口１３から取り入れた盤類２の電気機器収納部の熱い空気を触れさせて冷却し、下方の空気返送口１４から電気機器収納部に返送して盤類２内の温度上昇を抑制するものである。 Next, preferred embodiments of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a heat exchanger attached to the outer surface of a panel 2 such as a distribution board or a distribution board. The heat exchanger 1 circulates cooling water to the radiator 11 and supplies a fan to the radiator 11 cooled by the cooling water. 12, the hot air in the electrical equipment storage section of the panel 2 taken in from the upper air intake 13 is touched and cooled, and returned to the electrical equipment storage section from the lower air return port 14, and the temperature in the panel 2 It suppresses the rise.

この熱交換器１のケース３の底部３１には少量排水口４が設けられている。この少量排水口４はラジエター１１や冷却水を供給する送水管１５等により発生する結露水が滞留することなく排水できる迄の大きさとしている。また、該少量排水口４より上部位置には大量排水口５が設けてある。大量排水口５はラジエター１１の配管１１ａ等に亀裂が発生して冷却水が漏水した場合や冷却水を供給する送水管等の接続部等より冷却水が漏水した場合に少量排水口４では排水しきれずに水位が上昇した水を排水するものである。   A small amount drain port 4 is provided at the bottom 31 of the case 3 of the heat exchanger 1. The small-sized drainage port 4 has such a size that the condensed water generated by the radiator 11 or the water supply pipe 15 for supplying cooling water can be drained without stagnation. Further, a large amount drainage port 5 is provided at a position above the small amount drainage port 4. The large-volume drain port 5 is drained by the small-scale drain port 4 when a crack occurs in the pipe 11a of the radiator 11 and the coolant leaks, or when the coolant leaks from a connecting part such as a water pipe for supplying the coolant. It drains the water whose water level has risen without being squeezed.

なお、これら少量排水口４と大量排水口５は図示のものはケース３の底部３１を貫通する筒部６を設け、該筒部６の上部すなわち筒部６を短筒状としてその上端開口をもって大量排水口５を形成し、ケース３の底部３１上面に接する該筒部６の側面に小孔を設けて少量排水口４を形成したものである。しかし、これに限らず、少量排水口４をケース３の底部３１に透設した小孔からなるものとし、大量排水口５をケース３の底部３１の上部に位置するケース３の壁面に設けてもよい。また、図示のものは結露水が最も発生するラジエター１１の下部にドレン受１１ｂを設けてこれに溜まった結露水をホース１１ｃにより筒部６の側面に設けた孔部に接続してケース３内に飛散することなく外部に排水するものとしているが、ドレン受１１ｂを設けずそのまま底部３１で結露水を受け少量排水口４より排水してもよい。   The small-sized drainage port 4 and the large-scale drainage port 5 are provided with a cylindrical portion 6 that penetrates the bottom 31 of the case 3, and the upper portion of the cylindrical portion 6, that is, the cylindrical portion 6 has a short cylindrical shape and has an upper end opening. A large amount of drainage port 5 is formed by forming a large amount of drainage port 5 and providing a small hole on the side surface of the cylindrical part 6 that contacts the upper surface of the bottom 31 of the case 3. However, the present invention is not limited to this, and the small-quantity drainage port 4 is formed of a small hole formed through the bottom 31 of the case 3, and the large-scale drainage port 5 is provided on the wall surface of the case 3 positioned above the bottom 31 of the case 3. Also good. In the illustrated case, a drain receiver 11b is provided at the lower part of the radiator 11 where condensation water is generated most, and the condensed water accumulated in the drain receiver 11b is connected to a hole provided on the side surface of the cylindrical portion 6 by a hose 11c. However, the drain receiver 11b may not be provided, but the dew condensation water may be received at the bottom 31 as it is and drained from a small amount of the drain port 4 as it is.

７は少量排水口４と大量排水口５との間の水位を検出する水位検出部である。この水位検出部７が検出する水位は少量排水口４から排水しきれないラジエター１１の配管等からの漏水により滞留した水を検知することとなるので、該水位検出部７は所定の水位となったら警報器や、ラジエター１１に接続した送水管１５に設けた電磁弁１５ａ又は器外の冷却水送水用のポンプに信号をおくり、警報を発したり、電磁弁１５ａを閉じたり、ポンプの運転を停止して冷却水のラジエター１１への循環を停止して漏水を止めることができる。   Reference numeral 7 denotes a water level detection unit that detects the water level between the small amount drain port 4 and the large amount drain port 5. Since the water level detected by the water level detection unit 7 detects water accumulated due to leakage from the piping of the radiator 11 that cannot be drained from the small amount of the drain port 4, the water level detection unit 7 has a predetermined water level. After that, a signal is sent to an alarm device, an electromagnetic valve 15a provided in the water supply pipe 15 connected to the radiator 11 or a pump for cooling water supply outside the device, an alarm is issued, the electromagnetic valve 15a is closed, and the pump is operated. The water leakage can be stopped by stopping and circulating the cooling water to the radiator 11.

この実施形態では水位検出部７は図示のとおりフロートスイッチを使用している。このフロートスイッチ７はケース３の低部３１に対して垂直に設けた中心筒７１にフロート部材７２を上下動自在に嵌合して、該中心筒７１に接点７１ａを設け、また、フロート部材７２にマグネット７２ａ設けたものである。そして、水位の上昇に伴い上動するフロート部材７２のマグネット７２ａが接点７１ａに接近すると該接点７１ａが磁気を感知してその信号を警報器、電磁弁、ポンプ等に送るものである。このようなマグネット７２ａが接点７１ａに接近すると該接点７１ａが磁気を感知してその信号を送る構成としたフロートスイッチ７にあっては結露水の垂下による跳ね返りによる誤作動がない利点がある。   In this embodiment, the water level detector 7 uses a float switch as shown. The float switch 7 is configured such that a float member 72 is vertically movably fitted to a central cylinder 71 provided perpendicular to the lower portion 31 of the case 3, a contact 71 a is provided on the central cylinder 71, and the float member 72 is provided. Is provided with a magnet 72a. Then, when the magnet 72a of the float member 72 that moves up as the water level rises approaches the contact point 71a, the contact point 71a senses magnetism and sends the signal to an alarm device, electromagnetic valve, pump, or the like. In the float switch 7 configured such that when the magnet 72a approaches the contact 71a, the contact 71a senses magnetism and sends the signal, there is an advantage that there is no malfunction due to rebound caused by dripping of condensed water.

なお、水位検出部７は前記フロートスイッチに限られることなく電極スイッチとして、所定の水位となった信号を発するものとしてもよく、この場合に大量排水口５の口縁に設けてもよい。   The water level detection unit 7 is not limited to the float switch and may be an electrode switch that emits a signal indicating a predetermined water level. In this case, the water level detection unit 7 may be provided at the rim of the mass drainage port 5.

このように構成されたものは、通常時はラジエター１１や冷却水を供給する送水管等に発生する結露水はケース３の底部３１に流下して少量排水口４から外部に排水されるものである。しかし、この少量排水口４はラジエター１１の配管１１ａに生じた亀裂により発生する漏水や冷却水を供給する送水管１５等の接続部等より発生する漏水を排水しきれずそのためケース３の底部３１に水が溜まり水位が上昇するものであるが、該少量排水口４より上部位置に大量排水口５が設けあるので上昇した水は該大量排水口５から外部に排水されるので、この熱交換器を取り付けた分電盤、配電盤等の盤類の電気機器収納部に水が浸入する虞のないものである。   In such a configuration, the dew condensation water generated in the radiator 11 and the water supply pipe for supplying cooling water normally flows down to the bottom 31 of the case 3 and is drained to the outside through a small amount of drainage 4. is there. However, the small-quantity drainage port 4 cannot drain the leaked water generated by the crack generated in the pipe 11 a of the radiator 11 or the water pipe 15 or the like connected to the water supply pipe 15 for supplying cooling water. Although the water is accumulated and the water level rises, since the large amount drainage port 5 is provided above the small amount drainage port 4, the raised water is drained to the outside from the large amount drainage port 5. There is no risk of water entering the electrical equipment storage part of the panel such as a distribution board or a distribution board.

また、少量排水口４と大量排水口５との間の水位を検出する水位検出部７を設けているので、水位検出部７が水位を検知することは漏水を検知したこととなるので、この場合に水位検出部７は異常信号を発して、漏水警報を発したり、電磁弁１５ａを閉じたり、ポンプの運転を停止して冷却水のラジエター１１への循環を停止して漏水を止めるものである。   Moreover, since the water level detection part 7 which detects the water level between the small amount outlet 4 and the large quantity outlet 5 is provided, since the water level detection part 7 detects the water level, this means that the water leak has been detected. In this case, the water level detection unit 7 issues an abnormal signal, issues a water leakage alarm, closes the electromagnetic valve 15a, stops the pump operation, stops circulation of the cooling water to the radiator 11, and stops water leakage. is there.

本発明の実施形態を示す断面図である。It is sectional drawing which shows embodiment of this invention. 本発明の実施形態を前面カバーを外して示す斜視図である。It is a perspective view which removes a front cover and shows embodiment of the present invention. 本発明の実施形態の要部示す斜視図である。It is a perspective view which shows the principal part of embodiment of this invention. 少量排水口と大量排水口及びフロートスイッチとを示す正面図である。It is a front view which shows a small amount drain port, a large amount drain port, and a float switch. 盤類に水冷式熱交換器を取り付けた使用状態を示す斜視図である。It is a perspective view which shows the use condition which attached the water-cooling type heat exchanger to the boards.

符号の説明Explanation of symbols

１ 熱交換器
11 ラジエター
３ ケース
31 底部
４ 少量排水口
５ 大量排水口
６ 筒部
７ 水位検出部 1 heat exchanger
11 Radiator 3 Case
31 Bottom 4 Small drain 5 Mass drain 6 Tube 7 Water level detector

Claims (3)

冷却水をラジエターに循環させてなる熱交換器のケースの底部に少量排水口を、また、該少量排水口より上部位置に大量排水口を設けたうえ、少量排水口と大量排水口との間の水位を検出する水位検出部を設けたことを特徴とする水冷式熱交換器の漏水検出システム。   A small drainage port is provided at the bottom of the heat exchanger case that circulates cooling water to the radiator, and a large drainage port is provided above the small drainage port. A water leakage detection system for a water-cooled heat exchanger, characterized in that a water level detection unit for detecting the water level of the water cooling system is provided. 水位検出部がフロートスイッチである請求項１に記載の水冷式熱交換器の漏水検出システム。   The water leakage detection system for a water-cooled heat exchanger according to claim 1, wherein the water level detection unit is a float switch. ケースの底部を貫通する筒部を設け、該筒部の上部に大量排水口に形成し、ケースの底部上面に接する該筒部の側面に少量排水口を形成した請求項１又は２に記載の水冷式熱交換器の漏水検出システム。   The cylinder part which penetrates the bottom part of a case is provided, A large amount drainage port is formed in the upper part of this cylinder part, A small amount drainage port is formed in the side surface of this cylinder part which touches the bottom upper surface of a case. Water leakage detection system for water-cooled heat exchangers.
JP2003361954A 2003-10-22 2003-10-22 Water-cooled heat exchanger leak detection system Expired - Fee Related JP4233032B2 (en)

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JP4233032B2 JP4233032B2 (en) 2009-03-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200465217Y1 (en) 2010-12-07 2013-02-28 (주)이림전자 A ventilation unit with detachable under grill
JP2019152387A (en) * 2018-03-05 2019-09-12 日東工業株式会社 Water-cooled heat exchanger

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200465217Y1 (en) 2010-12-07 2013-02-28 (주)이림전자 A ventilation unit with detachable under grill
JP2019152387A (en) * 2018-03-05 2019-09-12 日東工業株式会社 Water-cooled heat exchanger
WO2019172035A1 (en) * 2018-03-05 2019-09-12 日東工業株式会社 Water-cooled heat exchanger
JP7055558B2 (en) 2018-03-05 2022-04-18 日東工業株式会社 Water-cooled heat exchanger

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