JP2011043272A

JP2011043272A - Storage water heater

Info

Publication number: JP2011043272A
Application number: JP2009190640A
Authority: JP
Inventors: Kazuya Sayama; 和也佐山; Masao Tomita; 賢雄冨田; Yasushi Akutsu; 靖阿久津; Masatoshi Yoneyama; 正敏米山
Original assignee: Corona Corp
Current assignee: Corona Corp
Priority date: 2009-08-20
Filing date: 2009-08-20
Publication date: 2011-03-03

Abstract

<P>PROBLEM TO BE SOLVED: To simplify drain operation of hot water within a hot water storage tank. <P>SOLUTION: A drain pan 12 for temporarily receiving drain from a drain pipe 5 and discharging the drain to outside is provided. The drain pan 12 includes: a temporary water storage chamber 19 receiving drain from the drain pipe 5 and having a water level detection means 13 for detecting a predetermined water level; a small drainage hole 17 opened in the temporary water storage chamber 19 and having drain capacity smaller than that from the drain pipe 5; and a large drainage hole 18 for discharging water overflowing from the temporary water storage chamber 19. During drainage by opening a drain valve 8, when it is detected by the water level detection means 13 that the water level within the temporary water storage chamber 19 exceeds the predetermined water level and then, it is detected by the water level detection means 13 that the water level within the temporary water storage chamber 19 becomes below the predetermined water level, it is determined that drainage within the hot water storage tank 1 is completed and the completion of the drainage is informed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、貯湯タンク内の湯水の排水作業を簡略化できるようにした貯湯式給湯装置に関するものである。 The present invention relates to a hot water storage type hot water supply apparatus that can simplify the draining operation of hot water in a hot water storage tank.

従来よりこの種の貯湯式給湯装置においては、湯水を貯湯する貯湯タンクと、前記貯湯タンク下部に接続された給水管と、前記給水管の途中に設けられた止水弁と、前記貯湯タンクから出湯する出湯管と、前記貯湯タンク底部に接続された排水管と、前記排水管の途中に設けられた排水弁と、前記貯湯タンク内の湯水を加熱する加熱手段と、前記貯湯タンク内の過圧を逃がすための過圧逃し弁とを備え、遠隔操作によって止水弁を閉じると共に排水弁を開いて貯湯タンク内の湯水を自動排水できるようにし、自動排水時に排水弁を貯湯タンク内の全ての湯水を排水できる一定時間開いた後に閉じるようにしたものがあった（特許文献１参照）。 Conventionally, in this type of hot water storage type hot water supply apparatus, a hot water storage tank for storing hot water, a water supply pipe connected to the lower part of the hot water storage tank, a water stop valve provided in the middle of the water supply pipe, and the hot water storage tank A hot water discharge pipe for discharging hot water, a drain pipe connected to the bottom of the hot water storage tank, a drain valve provided in the middle of the drain pipe, a heating means for heating hot water in the hot water storage tank, and an excess in the hot water storage tank It has an overpressure relief valve for releasing pressure, and closes the water stop valve and opens the drain valve by remote operation so that the hot water in the hot water tank can be drained automatically. There was one that was opened after a certain period of time during which the hot water could be drained (see Patent Document 1).

特開平０６−１７４３０４号公報Japanese Patent Laid-Open No. 06-174304

ところで、この従来のものでは、自動排水時に排水が完了したかどうかがわからないため、排水弁を閉じるまでの一定時間を実際の排水時間よりも余裕を持たせた長時間とする必要があり、作業時間が長く掛かってしまうという問題がある。 By the way, in this conventional one, since it is not known whether drainage is completed during automatic drainage, it is necessary to set a certain time until the drainage valve is closed to a longer time than the actual drainage time. There is a problem that it takes a long time.

また、排水弁を開いても実際に排水されているかどうかの確認ができないため、万一排水管途中にゴミ等が詰まっていたり、貯湯タンク内への吸気が阻害されていたりして規定の排水流量が確保できない場合を認識することができず、排水に時間が掛かって排水完了前に排水弁が閉じられてしまい、排水が未完了となってしまうおそれがあった。 In addition, since it is not possible to confirm whether the water is actually drained even if the drain valve is opened, the wastewater should be stipulated due to clogging with dust etc. in the middle of the drain pipe or obstruction of intake air into the hot water storage tank. The case where the flow rate cannot be secured cannot be recognized, and drainage takes time, and the drainage valve is closed before drainage is completed, and drainage may not be completed.

本発明は上記課題を解決するために、請求項１では、湯水を貯湯する貯湯タンクと、前記貯湯タンク下部に接続された給水管と、前記給水管の途中に設けられた止水弁と、前記貯湯タンクから出湯する出湯管と、前記貯湯タンク底部に接続された排水管と、前記排水管の途中に設けられた排水弁と、前記貯湯タンク内の湯水を加熱する加熱手段と、前記貯湯タンク内を大気に開放するための大気開放弁と、前記排水管からの排水を一時的に受けて外部へ排水する排水受皿と、を備え、前記排水受皿は、前記排水管からの排水を受けるとともに所定の水位を検出する水位検知手段が配設された一時貯水室と、この一時貯水室に開口され前記排水管からの排水能力よりも小さい排水能力を有した小排水口と、前記一時貯水室から溢れた水を排出する大排水口と、を有し、前記排水弁を開いた排水時に、前記水位検知手段により前記一時貯水室内の水位が所定の水位以上あることを検知し、その後、前記水位検知手段により前記一時貯水室内の水位が所定の水位以下となったことを検知すると、前記貯湯タンク内の排水が完了したと判断し、排水完了した旨を報知するようにした。 In order to solve the above-mentioned problems, the present invention provides a hot water storage tank for storing hot water, a water supply pipe connected to a lower part of the hot water storage tank, a water stop valve provided in the middle of the water supply pipe, A hot water discharge pipe for discharging hot water from the hot water storage tank, a drain pipe connected to the bottom of the hot water storage tank, a drain valve provided in the middle of the drain pipe, heating means for heating the hot water in the hot water storage tank, and the hot water storage An air release valve for opening the inside of the tank to the atmosphere, and a drain pan that temporarily receives drainage from the drain pipe and drains it to the outside, and the drain pan receives drainage from the drain pipe And a temporary water storage chamber in which a water level detecting means for detecting a predetermined water level is disposed, a small drainage port opened in the temporary water storage chamber and having a drainage capacity smaller than the drainage capacity from the drainage pipe, and the temporary water storage Drain overflowing water from the room And when the drainage valve is opened, the water level detection means detects that the water level in the temporary water storage chamber is equal to or higher than a predetermined water level, and then the water level detection means detects the temporary water storage. When it was detected that the water level in the room was equal to or lower than the predetermined water level, it was determined that drainage in the hot water storage tank was completed, and a notification that drainage was completed was made.

また、請求項２では、排水の開始から第１所定時間以内に前記水位検知手段により前記一時貯水室内の水位が所定の水位以上あることを検知できなかった場合は、排水異常である旨を報知するようにした。 Further, in claim 2, if the water level detecting means cannot detect that the water level in the temporary water storage chamber is equal to or higher than the predetermined water level within the first predetermined time from the start of drainage, it notifies that the drainage is abnormal. I tried to do it.

また、請求項３では、排水が開始されたことを検知してから第２所定時間以内に前記水位検知手段により前記一時貯水室内の水位が所定の水位以下となったことを検知することができなかった場合は、止水異常である旨を報知するようにした。 In the third aspect of the present invention, it is possible to detect that the water level in the temporary water storage chamber has become equal to or lower than a predetermined water level by the water level detecting means within a second predetermined time after detecting that drainage has started. When there was not, it was made to alert | report that it was a water stop abnormality.

また、請求項４では、前記排水完了または排水異常または止水異常の旨の報知とともに、前記排水弁を自動閉止するようにした。 According to a fourth aspect of the present invention, the drain valve is automatically closed together with the notification that the drainage is completed or the drainage is abnormal or the waterstop is abnormal.

また、請求項５では、前記排水受皿は、貯湯タンクを収容する外装体の底板に設けられ、排水時以外に前記水位検知手段により前記一時貯水室内の水位が所定の水位以上あることを検知すると、貯湯タンクや出湯管等からの水漏れが発生した旨を報知するようにした。 Moreover, in Claim 5, the said drain pan is provided in the bottom plate of the exterior body which accommodates a hot water storage tank, and when it detects that the water level in the said temporary water storage chamber is more than a predetermined water level by the said water level detection means other than at the time of drainage. Announcing that water leaks from hot water storage tanks and outlet pipes.

以上のように、本発明によれば、貯湯タンクの排水作業が完了したことを検知して知らせることが可能となり、作業者が貯湯タンクの排水作業に掛ける時間を短縮することができる。 As described above, according to the present invention, it is possible to detect and notify the completion of the drainage operation of the hot water storage tank, and it is possible to shorten the time required for the operator to perform the drainage operation of the hot water storage tank.

また、排水異常により排水が正常に開始されない旨、あるいは止水異常により排水が正常に完了されない旨を検知することができる。 Further, it can be detected that drainage is not started normally due to abnormal drainage or that drainage is not completed normally due to abnormal stoppage of water.

また、貯湯タンクの排水の完了と貯湯タンク等からの水漏れの発生を同一の検知手段で検知することができる。 Further, completion of drainage of the hot water storage tank and occurrence of water leakage from the hot water storage tank or the like can be detected by the same detection means.

本発明の一実施形態の貯湯式給湯装置の概略構成図。The schematic block diagram of the hot water storage type hot water supply apparatus of one Embodiment of this invention. 同一実施形態の排水受皿の要部断面図。The principal part sectional drawing of the drainage tray of the same embodiment. 同一実施形態の排水受皿の上面図。The top view of the drainage tray of the same embodiment.

次に、本発明の一実施形態の貯湯式給湯装置を図面に基づいて説明する。
１は湯水を貯湯する貯湯タンク、２は貯湯タンク１内の湯水を加熱する加熱手段として貯湯タンク１内に配置されたヒータ、３は貯湯タンク１下部に接続され市水を導入する入水管、４は貯湯タンク１上部に接続され湯を出湯する出湯管、５は貯湯タンク１底部に接続され貯湯タンク１の排水を行うための排水管である。 Next, a hot water storage type hot water supply apparatus according to an embodiment of the present invention will be described with reference to the drawings.
1 is a hot water storage tank for storing hot water, 2 is a heater disposed in the hot water storage tank 1 as a heating means for heating the hot water in the hot water storage tank 1, 3 is a water inlet pipe connected to the lower part of the hot water storage tank 1 for introducing city water, 4 is a discharge pipe connected to the hot water storage tank 1 for discharging hot water, and 5 is a drain pipe connected to the bottom of the hot water storage tank 1 for draining the hot water storage tank 1.

６は出湯管４途中から分岐して設けられ手動で開閉する弁を備えて開弁時に貯湯タンク１内を大気開放する大気開放弁であり、閉弁時にはヒータ２で加熱により上昇した貯湯タンク１内の圧力が所定の圧力を超過すると自動で開弁して過圧を逃がす過圧逃し弁機能が具備されているものである。 A hot water storage tank 6 is provided with a valve that is branched from the middle of the hot water discharge pipe 4 and is manually opened and closed to open the hot water storage tank 1 to the atmosphere when the valve is opened. When the internal pressure exceeds a predetermined pressure, an over-pressure relief valve function for automatically opening the valve to release over-pressure is provided.

７は入水管３途中に設けられ電気的な指令によって給水を遮断する止水弁である。この止水弁７は閉駆動パルスを受けると開弁状態から閉弁状態に切り換わると共に、閉駆動パルスと逆極性の開駆動パルスを受けると閉弁状態から開弁状態に切り換わり、開状態あるいは閉状態を永久磁石により保持するラッチング型の給水遮断弁により構成されているものである。 7 is a water stop valve provided in the middle of the water inlet pipe 3 to shut off the water supply by an electrical command. When the water stop valve 7 receives a closed drive pulse, it switches from a valve-opened state to a valve-closed state, and when it receives an open drive pulse having a polarity opposite to that of the closed drive pulse, it switches from the valve-closed state to the valve-open state. Or it is comprised by the latching type water supply cutoff valve which hold | maintains a closed state with a permanent magnet.

８は排水管５途中に設けられ電気的な指令によって開いて貯湯タンク１の排水を行う排水弁である。ここで、排水弁８は弁体が開位置あるいは閉位置にあることをホールＩＣにより検知可能なモータバルブ式の電動弁により構成されているものである。 A drain valve 8 is provided in the middle of the drain pipe 5 and is opened by an electrical command to drain the hot water storage tank 1. Here, the drain valve 8 is constituted by a motor valve type electric valve capable of detecting by a Hall IC that the valve body is in an open position or a closed position.

９は貯湯タンク１を収容する外装体、１０はドレンパンを兼ねた外装体９の底板、１１は貯湯タンク１を支える複数のタンク脚、１２は底板１０に設けられ底板１０に落下した水を集めて排水するための排水受皿、１３は排水受皿１２内の水位が所定の水位に達したことを検知する水位検知手段、１４は排水受皿１２の水を排水溝１５へ導く排水ホースである。 9 is an exterior body that houses the hot water storage tank 1, 10 is a bottom plate of the exterior body 9 that also serves as a drain pan, 11 is a plurality of tank legs that support the hot water storage tank 1, and 12 is provided on the bottom plate 10 to collect water that has fallen on the bottom plate 10 A drainage tray 13 for draining, a water level detection means 13 for detecting that the water level in the drainage tray 12 has reached a predetermined water level, and a drain hose 14 for guiding the water in the drainage tray 12 to the drainage groove 15.

ここで、前記排水受皿１２は、図２、図３に示すように、椀状の受皿本体１６と、受皿本体１６の底部に設けた小排水口１７および小排水口１７より大きく開口した大排水口１８と、この小排水口１７と大排水口１８との間に設けられ受皿本体１６内部空間を二分し、小排水口１７のある側の受皿本体１６内部空間を一時的に水を貯める一時貯水室１９を形成する仕切板２０とを具備している。 Here, as shown in FIGS. 2 and 3, the drainage tray 12 has a bowl-shaped tray body 16, a small drainage port 17 provided at the bottom of the tray body 16, and a large drainage opening larger than the small drainage port 17. Temporarily storing water in the saucer body 16 internal space on the side where the small drainage port 17 is provided by dividing the interior space of the saucer body 16 provided between the mouth 18 and the small drainage port 17 and the large drainage port 18. And a partition plate 20 forming a water storage chamber 19.

ここで、前記排水管５の開放端部はこの一時貯水室１９に直上部に位置するように設けられており、前記小排水口１７の排水能力は、排水管５の排水能力よりも小さく、また、小排水口１７と大排水口１８の排水能力の合計は排水管５の排水能力よりも大きくなるようにそれぞれの開口面積が設定され、排水管５からの排水は一時貯水室１９へ一時貯留され、小排水口１７で排水しきれない分が仕切板２０から溢れて大排水口１８から排水される。 Here, the open end of the drain pipe 5 is provided in the temporary water storage chamber 19 so as to be located immediately above, and the drain capacity of the small drain port 17 is smaller than the drain capacity of the drain pipe 5, In addition, the opening area of each of the small drainage port 17 and the large drainage port 18 is set to be larger than the drainage capability of the drainage pipe 5, and the drainage from the drainage pipe 5 is temporarily sent to the temporary storage chamber 19. The portion that is stored and cannot be drained by the small drainage port 17 overflows from the partition plate 20 and is drained from the large drainage port 18.

ここで、前記水位検知手段１３は前記一時貯水室１９に配置されたフロートスイッチにより構成され、受皿本体１６のフランジ２１に固定された固定金具２２よりリードスイッチ２３を有した軸２４がつり下げられ、磁性体を有したフロート２５が軸２４を摺動自在に設けられているものである。 Here, the water level detection means 13 is constituted by a float switch disposed in the temporary water storage chamber 19, and a shaft 24 having a reed switch 23 is suspended from a fixing bracket 22 fixed to the flange 21 of the tray body 16. A float 25 having a magnetic material is provided so that the shaft 24 can slide freely.

そして、前記受皿本体１６の一時貯水室１９側の上端縁に切り欠き部２６を設け、底板１０から受皿本体１６に流入する水を一時貯水室１９に案内するようにしている。なお、前記切り欠き部２６の最下端高さよりも前記仕切板２０の上端高さを低く位置させ、一時貯水室１９に貯まった水が底板１０側に流れ出ないようにしている。 And the notch 26 is provided in the upper end edge by the side of the temporary water storage chamber 19 of the said saucer main body 16, and the water which flows in into the saucer main body 16 from the baseplate 10 is guided to the temporary water storage chamber 19. As shown in FIG. In addition, the upper end height of the partition plate 20 is positioned lower than the lowermost end height of the notch 26 so that the water stored in the temporary water storage chamber 19 does not flow to the bottom plate 10 side.

切り欠き部２６から一時貯水室１９へ流入した水は、その流入量が少ない場合は小排水口１７から流出され、流入量が小排水口１７の排水能力よりも多い場合は一時貯水室１９へ貯まり、小排水口１７で排水仕切れない分が仕切板２０から溢れて大排水口１８から排水される。 The water flowing into the temporary water storage chamber 19 from the notch 26 flows out from the small drainage port 17 when the inflow amount is small, and to the temporary water storage chamber 19 when the inflow amount is larger than the drainage capacity of the small drainage port 17. The portion that is stored and cannot be separated by the small drainage port 17 overflows from the partition plate 20 and is drained from the large drainage port 18.

また、前記受皿本体１６の底部裏面に排水ニップル２７を設け、前記小排水口１７と大排水口１８を前記排水ニップル２７の真上に開口させ、同一の排水ニップル２７から排水することができ、排水が温水器下方のあちこちに飛び散ることがないと共に、排水ニップル２７に排水ホース１４を接続するだけで、小排水口１７からの水と大排水口１８からの水を一個所に排水することができる。さらに、受皿本体１６の外周に突出する部分がないのでこの受皿本体１６を底板１０に取付ける際に、底板１０の上から差し込むだけで容易に取付けることができ、組み付け作業性も向上する。 Further, a drainage nipple 27 is provided on the bottom rear surface of the tray body 16, the small drainage port 17 and the large drainage port 18 are opened directly above the drainage nipple 27, and can be drained from the same drainage nipple 27, The drainage does not scatter around the water heater, and the drainage hose 14 is connected to the drainage nipple 27 so that the water from the small drainage port 17 and the water from the large drainage port 18 can be drained to one place. it can. Furthermore, since there is no part which protrudes on the outer periphery of the saucer body 16, when this saucer body 16 is attached to the bottom plate 10, it can be easily attached only by inserting from the top of the bottom plate 10, and the assembly workability is also improved.

２８はこの貯湯式給湯装置の制御を司るマイクロコンピュータを有した制御部、２９は制御部２８の電子基板上に設けられ排水動作の開始および停止を指示操作するための排水スイッチ、３０は制御部２８の電子基板上に設けられ排水動作の状態を報知するためのブザーおよび／またはＬＥＤからなる報知部である。 28 is a control unit having a microcomputer for controlling the hot water storage type hot water supply apparatus, 29 is a drain switch provided on the electronic board of the control unit 28 to instruct to start and stop the drain operation, and 30 is a control unit 28 is an informing unit comprising a buzzer and / or an LED provided on 28 electronic boards for informing the state of the drainage operation.

次に、貯湯タンク１内の水の排水時の作動について説明する。
作業者が大気開放弁６を開弁して排水スイッチ２９をＯＮすると、制御部２８は止水弁７を閉弁すると同時に排水弁８を開弁し、貯湯タンク１内の水が排水管５から排水受皿１２へ排水される。このとき、制御部２８は、排水スイッチ２９がＯＮ操作されると同時に、時間カウントを開始する。 Next, the operation | movement at the time of draining of the water in the hot water storage tank 1 is demonstrated.
When the operator opens the air release valve 6 and turns on the drain switch 29, the control unit 28 closes the water stop valve 7 and simultaneously opens the drain valve 8, and the water in the hot water storage tank 1 is drained from the drain pipe 5. Is drained to the drain pan 12. At this time, the control unit 28 starts time counting simultaneously with the drain switch 29 being turned on.

排水管５からの排水は排水受皿１２の一時貯水室１９へ流入し、小排水口１７で排水しきれない分だけ水位が上昇する。この水位の上昇に伴い、水位検知手段１３のフロート２５が浮力によって上昇し、所定の水位まで到達するとリードスイッチ２３がＯＮされ、制御部２８は排水が正常に開始されたことを検知することができる。 Drainage from the drainage pipe 5 flows into the temporary storage chamber 19 of the drainage tray 12, and the water level rises by the amount that cannot be drained through the small drainage port 17. As the water level rises, the float 25 of the water level detection means 13 rises by buoyancy, and when it reaches a predetermined water level, the reed switch 23 is turned on, and the control unit 28 can detect that drainage has started normally. it can.

小排水口１７で排水しきれずに仕切板２０を越えて一時貯水室１９から溢れた排水は大排水口１８から排水される。このとき、小排水口１７と大排水口１８の排水能力の合計は、排水管５の排水能力よりも大きいので、排水は全て排水ニップル２７から排水溝１５へ排水される。また、仕切板２０上端高さが切り欠き部２６の下端高さよりも低いので、一時貯水室１９に貯まっている水が底板１０に溢れ出してしてしまうことがない。 Drainage overflowing from the temporary storage chamber 19 beyond the partition plate 20 without being completely drained by the small drainage port 17 is drained from the large drainage port 18. At this time, since the total drainage capacity of the small drainage port 17 and the large drainage port 18 is larger than the drainage capability of the drainage pipe 5, all drainage is drained from the drainage nipple 27 to the drainage groove 15. Further, since the upper end height of the partition plate 20 is lower than the lower end height of the notch 26, the water stored in the temporary water storage chamber 19 does not overflow into the bottom plate 10.

そして、貯湯タンク１内の水を全て排水し終えると、一時貯水室１９へは新たな水の供給が無くなるため、一時貯水室１９内の水は小排水口１７から排水されて徐々に水位が低下し、水位検知手段１３のフロート２５も下降してリードスイッチ２３がＯＦＦされる。このことによって、制御部２８は排水が正常に終了したことを検知することができ、制御部２８の電子基板上の報知部３０のブザーを短時間鳴動させると共に、ＬＥＤを点灯して排水が正常に終了したことを作業者に報知することができる。 When all the water in the hot water storage tank 1 has been drained, no new water is supplied to the temporary water storage chamber 19, so the water in the temporary water storage chamber 19 is drained from the small drain port 17 and the water level gradually increases. The float 25 of the water level detection means 13 is also lowered and the reed switch 23 is turned off. As a result, the control unit 28 can detect that the drainage has ended normally, and the buzzer of the notification unit 30 on the electronic board of the control unit 28 is sounded for a short time, and the LED is turned on and the drainage is normal. The operator can be informed that the process has been completed.

作業者は排水作業の正常終了の報知を確認してから、大気開放弁６を手動で閉止し、排水スイッチ２９をＯＦＦ操作すると、制御部３０は排水弁８を閉止して排水作業を終了するようにしている。 When the operator confirms the notification of the normal completion of the drainage work, and manually closes the air release valve 6 and turns off the drainage switch 29, the control unit 30 closes the drainage valve 8 and finishes the drainage work. I am doing so.

ここで、排水を開始してから一時貯水室１９が満水になるであろう第１の所定時間が経過しても未だ水位検知手段１３が所定の水位に到達したことを検知できない場合は、何らかの原因によって排水管５から正常に排水できていないことが考えられるため、制御部２８の電子基板上の報知部３０によって先の正常終了とは別の形態で報知する。例えば、大気開放弁６を開き忘れ、排水管５からの排水が小排水口１７の排水能力以下の排水量であった場合や、排水管５がゴミ詰まりによって設計で規定した流量が排水されず、第１の所定時間が経過しても一時貯水室１９が所定の水位まで上昇しない場合等の正常に排水できない排水異常の状態を検知することができ、その際に、報知部３０のブザーを複数回鳴動させると共に、ＬＥＤを点滅させて排水異常である旨を作業者に報知することができる。 Here, if the water level detection means 13 still cannot detect that the water level has reached the predetermined water level even after the first predetermined time has elapsed since the drainage is started, the temporary water storage chamber 19 will become full. Since it is conceivable that the drainage pipe 5 has not been drained normally due to the cause, the notification unit 30 on the electronic board of the control unit 28 notifies in a different form from the previous normal end. For example, if the air release valve 6 is forgotten to be opened and the drainage from the drainage pipe 5 is less than the drainage capacity of the small drainage port 17, or the drainage pipe 5 is not drained at the flow rate specified by the design due to clogging with dust, It is possible to detect a state of abnormal drainage that cannot be drained normally, such as when the temporary reservoir 19 does not rise to a predetermined water level even after the first predetermined time has elapsed. It is possible to notify the operator that the drainage is abnormal by flashing the LED and blinking the LED.

そして、排水異常の報知を確認した作業者は、点検等により異常原因を解消した後に、排水スイッチ２９をＯＦＦ操作した後に、再度、ＯＮ操作することで、再度排水作業を行うことができる。このようにして、排水の開始から比較的短時間に排水異常の有無を自動判断できるため、大気開放弁６の開き忘れ等の簡単に解消可能な異常状態である場合に、すぐに異常原因を解消した後に排水作業を行うことができるものである。 Then, the operator who has confirmed the notification of the drainage abnormality can perform the drainage operation again by turning the drainage switch 29 off after turning off the drainage switch 29 after eliminating the cause of the abnormality by inspection or the like. In this way, since it is possible to automatically determine whether there is a drainage abnormality in a relatively short time after the start of drainage, in the case of an abnormal state that can be easily solved, such as forgetting to open the air release valve 6, the cause of the abnormality can be immediately determined. The drainage work can be performed after the cancellation.

また、排水を開始して正常に排水が開始されたことを検知した後に、排水管５の排水能力と貯湯タンク１の貯湯容量から予め求められる排水時間に余裕分を持たせた第２の所定時間が経過しても一時貯水室１９の水位が水位検知手段１３で所定の水位以下に低下したことを検出できなければ、何らかの原因にて止水弁７が閉じられていない止水異常の状態を検知し、報知部３０のブザーを先の排水異常とは異なる形態で複数回鳴動させると共に、ＬＥＤを先の排水異常とは異なる形態で点滅させて止水異常である旨を作業者に報知することができる。また、止水異常の報知と同時に、制御部３０は排水弁８を閉止して、不要な排水を中断させるようにしているものである。 In addition, after detecting that drainage has started normally after starting drainage, a second predetermined amount in which a drainage time determined in advance from the drainage capacity of the drainage pipe 5 and the hot water storage capacity of the hot water storage tank 1 is provided. If the water level detection means 13 cannot detect that the water level in the temporary water storage chamber 19 has dropped below the predetermined water level even after a lapse of time, the water stop valve 7 is not closed for some reason. And the buzzer of the notification unit 30 is sounded multiple times in a form different from the previous drainage abnormality, and the LED is flashed in a form different from the previous drainage abnormality to notify the operator that the water stoppage is abnormal. can do. Simultaneously with the notification of the water stop abnormality, the control unit 30 closes the drain valve 8 to interrupt unnecessary drainage.

ここで、排水動作時以外の通常時に、温度差により入水管３に結露が発生することがあるが、この結露水が底板１０を流れて排水受皿１２の切り欠き部２６より一時貯水室１９に流入する。このとき、底板１０からの結露水は排水受皿１２上端部に遮られて切り欠き部２６からしか流入しないようになっているので、結露水を確実に一時貯水室１９に流入させることができる。そして一時貯水室１９に流入した結露水は小排水口１７から排水ニップル２７を介して排水溝１５に排水されていくものである。このとき結露水程度の少量の水は一時貯水室１９に流入しても水位検知手段１３が所定の水位を検知するほど貯まらないので、少量の結露水の発生を漏水と間違って検知し、間違った漏水の警報報知を行ってしまうことがない。 Here, during normal times other than during the draining operation, condensation may occur in the water intake pipe 3 due to a temperature difference. The condensed water flows through the bottom plate 10 and enters the temporary water storage chamber 19 from the notch 26 of the drainage tray 12. Inflow. At this time, the dew condensation water from the bottom plate 10 is blocked by the upper end portion of the drainage tray 12 and flows only from the notch 26, so that the dew condensation water can surely flow into the temporary water storage chamber 19. The condensed water flowing into the temporary water storage chamber 19 is drained from the small drainage port 17 through the drainage nipple 27 into the drainage groove 15. At this time, even if a small amount of water such as condensed water flows into the temporary storage chamber 19, the water level detection means 13 does not store enough to detect the predetermined water level. There is no warning of leaking water.

そして、貯湯タンク１や入水管３、出湯管４などから漏水が発生すると、この漏水が底板１０を流れて排水受皿１２の切り欠き部２６より一時貯水室１９に流入する。このとき、底板１０からの漏水は排水受皿１２上端部に遮られて切り欠き部２６からしか流入しないようになっているので、漏水を確実に一時貯水室１９に流入させることができる。そして一時貯水室１９に流入した漏水は小排水口１７より排水されるが、この小排水口１７の排水能力を超えた分は一時貯水室１９に貯まっていくものである。 When water leaks from the hot water storage tank 1, the water inlet pipe 3, the hot water outlet pipe 4, etc., the water leaks through the bottom plate 10 and flows into the temporary water storage chamber 19 from the notch 26 of the drainage tray 12. At this time, water leakage from the bottom plate 10 is blocked by the upper end portion of the drainage tray 12 and flows only from the cutout portion 26, so that the water leakage can surely flow into the temporary water storage chamber 19. The leaked water flowing into the temporary water storage chamber 19 is drained from the small drainage port 17, and the amount exceeding the drainage capacity of the small drainage port 17 is stored in the temporary water storage chamber 19.

そして漏水が多く発生し、一時貯水室１９に貯まった漏水の水位が所定の水位に達すると、フロート２５が浮いて磁性体が軸２４のリードスイッチ２３をＯＮするので、水位検知手段１３が所定の水位まで漏水が貯まったことを検知して漏水が発生していると判断し、これを制御部２８へ伝え、制御部２８は報知部３０に漏水が発生した旨を報知する。 When a large amount of water leaks and the water level stored in the temporary water storage chamber 19 reaches a predetermined water level, the float 25 floats and the magnetic body turns on the reed switch 23 of the shaft 24. It is determined that water leakage has occurred by detecting that water has accumulated up to the water level, and this is transmitted to the control unit 28, and the control unit 28 notifies the notification unit 30 that water leakage has occurred.

一時貯水室１９に貯まっていく漏水が一時貯水室１９の容量を超えると、仕切板２０からオーバーフローして大排水口１８のある側の受皿本体１６内部空間に流れ出す。このとき、仕切板２０上端高さが切り欠き部２６の下端高さよりも低いので、一時貯水室１９に貯まっている漏水が底板１０に逆流してしまうことがない。そして、底部に開口された排水能力の大きい大排水口１８から排水されていくものである。このように、漏水の場合は排水能力の大きい大排水口１８から排水されるので、漏水が発生しても底板１０に溢れ出してしまうことがなく、貯湯式給湯装置が設置されている床等を水浸しにしてしまうことがないものである。 When the water leakage stored in the temporary water storage chamber 19 exceeds the capacity of the temporary water storage chamber 19, it overflows from the partition plate 20 and flows out into the inner space of the tray body 16 on the side where the large drainage port 18 is located. At this time, since the upper end height of the partition plate 20 is lower than the lower end height of the notch portion 26, the water leakage stored in the temporary water storage chamber 19 does not flow back to the bottom plate 10. And it drains from the large drain opening 18 with large drainage capacity opened at the bottom. Thus, in the case of water leakage, the water is drained from the large drainage port 18 having a large drainage capacity. Therefore, even if water leakage occurs, it does not overflow into the bottom plate 10, and the floor on which the hot water storage type hot water supply device is installed. Is not soaked in water.

このようにして、貯湯タンク１の排水作業の進捗と、貯湯タンク１等からの漏水の有無とを同一の検出装置で検知できるようになったものである。 In this way, the progress of the drainage operation of the hot water storage tank 1 and the presence or absence of water leakage from the hot water storage tank 1 or the like can be detected by the same detection device.

なお、本発明は上記の一実施形態に限定されるものではなく、加熱手段２としてヒートポンプ式のものを用いてもよく、また、水位検知手段１３として電極式のものを用いてもよいものである。さらに、大気開放弁６を手動で開放するものとしているが、これを電気的に開閉可能なものとしてもよいものであり、また、止水弁７および排水弁８を電気的に開閉可能なものとしているが、いずれか一方または両方を手動で開閉するものとして、全自動、半手動、全手動での排水作業において、排水の開始と終了を検知するようにしたものでもよいものである。 The present invention is not limited to the above-described embodiment, and a heat pump type may be used as the heating means 2, and an electrode type may be used as the water level detection means 13. is there. Furthermore, although the air release valve 6 is manually opened, it may be electrically opened and closed, and the water stop valve 7 and the drain valve 8 can be electrically opened and closed. However, it is also possible to detect the start and end of drainage in a fully automatic, semi-manual or fully manual drainage operation as one or both of which are manually opened and closed.

１貯湯タンク
２ヒータ（加熱手段）
３入水管
４出湯管
５排水管
６大気開放弁
７止水弁
８排水弁
１０底板
１２排水受皿
１３水位検知手段
１６受皿本体
１７小排水口
１８大排水口
１９一時貯水室 1 Hot water storage tank 2 Heater (heating means)
DESCRIPTION OF SYMBOLS 3 Inlet pipe 4 Outlet pipe 5 Drain pipe 6 Atmospheric release valve 7 Stop valve 8 Drain valve 10 Bottom plate 12 Drain pan 13 Water level detection means 16 Receptacle body 17 Small drain port 18 Large drain port 19 Temporary water storage chamber

Claims

湯水を貯湯する貯湯タンクと、前記貯湯タンク下部に接続された給水管と、前記給水管の途中に設けられた止水弁と、前記貯湯タンクから出湯する出湯管と、前記貯湯タンク底部に接続された排水管と、前記排水管の途中に設けられた排水弁と、前記貯湯タンク内の湯水を加熱する加熱手段と、前記貯湯タンク内を大気に開放するための大気開放弁と、前記排水管からの排水を一時的に受けて外部へ排水する排水受皿と、を備え、
前記排水受皿は、前記排水管からの排水を受けるとともに所定の水位を検出する水位検知手段が配設された一時貯水室と、この一時貯水室に開口され前記排水管からの排水能力よりも小さい排水能力を有した小排水口と、前記一時貯水室から溢れた水を排出する大排水口と、を有し、
前記排水弁を開いた排水時に、前記水位検知手段により前記一時貯水室内の水位が所定の水位以上あることを検知し、その後、前記水位検知手段により前記一時貯水室内の水位が所定の水位以下となったことを検知すると、前記貯湯タンク内の排水が完了したと判断し、排水完了した旨を報知するようにしたことを特徴とする貯湯式給湯装置。 A hot water storage tank for storing hot water, a water supply pipe connected to the lower part of the hot water storage tank, a water stop valve provided in the middle of the water supply pipe, a hot water discharge pipe for discharging hot water from the hot water storage tank, and a bottom of the hot water storage tank A drainage pipe, a drainage valve provided in the middle of the drainage pipe, a heating means for heating hot water in the hot water storage tank, an air release valve for opening the hot water storage tank to the atmosphere, and the drainage A drain pan that temporarily receives drainage from the pipe and drains it to the outside,
The drain pan is provided with a temporary water storage chamber in which water level detection means for detecting a predetermined water level is received while receiving drainage from the drain pipe, and is smaller than the drainage capacity from the drain pipe opened to the temporary water storage chamber. A small drainage port having a drainage capacity, and a large drainage port for discharging water overflowing from the temporary storage chamber,
When draining with the drain valve opened, the water level detection means detects that the water level in the temporary water storage chamber is equal to or higher than a predetermined water level, and then the water level detection means causes the water level in the temporary water storage chamber to be equal to or lower than a predetermined water level. When it is detected that the drainage of the hot water storage tank has been completed, it is determined that the drainage of the hot water storage tank has been completed, and the fact that the drainage has been completed is notified.

排水の開始から第１所定時間以内に前記水位検知手段により前記一時貯水室内の水位が所定の水位以上あることを検知できなかった場合は、排水異常である旨を報知するようにしたことを特徴とする請求項１記載の貯湯式給湯装置。 When the water level detection means cannot detect that the water level in the temporary water storage chamber is equal to or higher than the predetermined water level within the first predetermined time from the start of drainage, it is notified that the drainage is abnormal. The hot water storage type hot water supply apparatus according to claim 1.

排水が開始されたことを検知してから第２所定時間以内に前記水位検知手段により前記一時貯水室内の水位が所定の水位以下となったことを検知することができなかった場合は、止水異常である旨を報知するようにしたことを特徴とする請求項２記載の貯湯式給湯装置。 If it is not possible for the water level detection means to detect that the water level in the temporary water storage chamber has fallen below the predetermined water level within a second predetermined time after detecting that drainage has started, The hot water storage type hot water supply apparatus according to claim 2, characterized in that an abnormality is notified.

前記排水完了または排水異常または止水異常の旨の報知とともに、前記排水弁を自動閉止するようにしたことを特徴とする請求項１〜３の何れか一項に記載の貯湯式給湯装置。 The hot water storage type hot water supply apparatus according to any one of claims 1 to 3, wherein the drain valve is automatically closed together with the notification of the completion of drainage or abnormality of drainage or water stoppage.

前記排水受皿は、貯湯タンクを収容する外装体の底板に設けられ、排水時以外に前記水位検知手段により前記一時貯水室内の水位が所定の水位以上あることを検知すると、貯湯タンクや出湯管等からの水漏れが発生した旨を報知するようにしたことを特徴とする請求項１〜４の何れか一項に記載の貯湯式給湯装置。 The drainage tray is provided on the bottom plate of the exterior body that houses the hot water storage tank, and when the water level detection means detects that the water level in the temporary water storage chamber is equal to or higher than a predetermined water level other than during drainage, the hot water storage tank, the hot water pipe, etc. The hot water storage type hot water supply apparatus according to any one of claims 1 to 4, characterized in that a notification that water leakage has occurred has occurred.