JP6176586B2 - Instant hot water system - Google Patents
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- JP6176586B2 JP6176586B2 JP2012172095A JP2012172095A JP6176586B2 JP 6176586 B2 JP6176586 B2 JP 6176586B2 JP 2012172095 A JP2012172095 A JP 2012172095A JP 2012172095 A JP2012172095 A JP 2012172095A JP 6176586 B2 JP6176586 B2 JP 6176586B2
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Description
本発明は、圧力逃し弁及び圧力逃し弁を備える即湯システムに関する。 The present invention relates to a pressure relief valve and an immediate hot water system including a pressure relief valve.
水道から供給される水道水を加熱して吐水する即湯器として、電気ヒーターを内部に有する貯湯タンクを備えた構造のものが知られている。このような即湯器は、予め電気ヒーターで加熱した状態で湯をタンク内に貯えておくことにより、吐水を開始した直後から適切な温度の湯水を吐水することができる。 2. Description of the Related Art As an instant water heater that heats and discharges tap water supplied from water, a structure having a hot water storage tank having an electric heater inside is known. Such an instant water heater can discharge hot water at an appropriate temperature immediately after the start of water discharge by storing hot water in a tank in a state of being heated in advance by an electric heater.
従来の即湯器について、図６に基づき具体的に説明する。従来の即湯器は、熱源機１７からの湯水と貯湯タンク２内の湯水を混合する混合バルブ３と、沸き上げ時に貯湯タンク２内の圧力が所定の圧力より上昇しないように貯湯タンク２内の圧力を減少させる圧力逃し弁３６と、貯湯タンク２内の湯水を抜くために貯湯タンク２内に空気を供給する吸気栓３９と、を備えている。 A conventional instant water heater will be specifically described with reference to FIG. The conventional instant water heater includes a mixing valve 3 for mixing hot water from the heat source unit 17 and hot water in the hot water storage tank 2 and the hot water tank 2 so that the pressure in the hot water storage tank 2 does not rise above a predetermined pressure at the time of boiling. A pressure relief valve 36 for reducing the pressure of the hot water storage tank 2 and an intake plug 39 for supplying air into the hot water storage tank 2 in order to drain the hot water in the hot water storage tank 2.
水栓２２を開くと、給湯配管２９内の冷水が給湯口１０より貯湯タンク２へ供給されるとともに、所定の設定温度へ沸き上げられた高温の湯水が出湯管１３より混合バルブ３へと供給される。そして、給湯口１０よりバイパス管１６を経由して供給された給湯配管２９内の冷水と混合され、予め設定された設定温度で出湯口１２から吐出される。 When the faucet 22 is opened, cold water in the hot water supply pipe 29 is supplied from the hot water supply port 10 to the hot water storage tank 2, and hot hot water heated to a predetermined set temperature is supplied from the hot water discharge pipe 13 to the mixing valve 3. Is done. Then, it is mixed with the cold water in the hot water supply pipe 29 supplied from the hot water supply port 10 via the bypass pipe 16 and discharged from the hot water outlet 12 at a preset temperature set in advance.
その後、熱源機１７で作られた湯水が給湯配管２９及びバイパス管１６内の冷水と置換されて予め設定された混合温度以上の湯水が混合バルブ３へ到達すると、混合バルブ３内の感温素子が出湯管１３からの貯湯タンク２内の高温の湯水の流入を阻止し、熱源機１７からの湯水のみが混合バルブ３を通過して出湯口１２から吐出されるようになる。 Thereafter, when hot water produced by the heat source device 17 is replaced with cold water in the hot water supply pipe 29 and the bypass pipe 16 and hot water of a preset mixing temperature or higher reaches the mixing valve 3, the temperature sensing element in the mixing valve 3. Prevents hot water from flowing into the hot water storage tank 2 from the hot water discharge pipe 13, and only hot water from the heat source unit 17 passes through the mixing valve 3 and is discharged from the hot water outlet 12.
混合バルブ３内の感温素子が貯湯タンク２内の高温の湯水の流入を阻止している状態において、貯湯タンク２内に空気が残っていると、貯湯タンク２内の湯水を電気ヒーター８で加熱すると、貯湯タンク２内の空気が圧縮される。特に、従来の即湯器は、貯湯タンク２内の圧力を減少させる圧力逃し弁３６を備えているものの、貯湯タンク２内の圧力が所定の圧力よりも低い場合、貯湯タンク２内の空気がそのまま圧縮され続けることになる。 In the state where the temperature sensing element in the mixing valve 3 prevents the hot water from flowing into the hot water storage tank 2, if air remains in the hot water storage tank 2, the hot water in the hot water storage tank 2 is removed by the electric heater 8. When heated, the air in the hot water storage tank 2 is compressed. In particular, the conventional instant water heater is provided with the pressure relief valve 36 for reducing the pressure in the hot water tank 2, but when the pressure in the hot water tank 2 is lower than a predetermined pressure, the air in the hot water tank 2 is reduced. It will continue to be compressed as it is.
貯湯タンク２内の空気が圧縮される状態において、給湯止水栓１９を閉めて排水栓１１を開いた後、吸気栓３９も開いて貯湯タンク２内や出湯管１３やバイパス管１６等の配管内の水を抜こうとすると、貯湯タンク２内に残った圧縮された空気のために、吸気栓３９から貯湯タンク２内の圧縮された空気とともに高温の湯水が噴出する恐れがあり、吸気栓３９を開いた使用者に噴出した高温の湯水がかかってしまうという問題があった。 In a state where the air in the hot water storage tank 2 is compressed, after the hot water stop cock 19 is closed and the drain plug 11 is opened, the intake plug 39 is also opened and piping in the hot water storage tank 2, the hot water discharge pipe 13, the bypass pipe 16, etc. If the water in the hot water storage tank 2 is drained, the compressed air remaining in the hot water storage tank 2 may cause hot hot water to be ejected from the intake plug 39 together with the compressed air in the hot water storage tank 2. There was a problem that high temperature hot water spouted out to the user who opened 39.
本発明はこのような課題に鑑みてなされたものであり、その目的は、貯湯タンクの内部の湯水の沸き上げ時に貯湯タンクの内部に圧縮された空気がある状態においても、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを防止する即湯器を提供することにある。 The present invention has been made in view of such a problem, and the object thereof is to open the intake plug even when there is compressed air inside the hot water storage tank when boiling the hot water inside the hot water storage tank. An object of the present invention is to provide an instant water heater that prevents a hot water sprayed from a user from splashing.
上記課題を解決するために本発明に係る即湯システムは、熱源機からの湯水を給湯配管を介して貯湯タンクに供給し、前記貯湯タンクからの湯水を出湯管を介して出湯する即湯システムであって、前記出湯管の内部流路を開閉する混合バルブを備え、前記給湯配管は、前記貯湯タンクに湯水を供給する内部流路と、前記貯湯タンクを経由することなく前記混合バルブに接続されるバイパス管を有し、前記貯湯タンクの水道水を加熱している時に、前記貯湯タンクの内部の圧力が所定の圧力になった場合、前記貯湯タンクに繋がる内部流路を膨張水排出管に接続させて前記貯湯タンクの内部の圧力を所定の圧力以下に減少させる圧力逃し弁を備え、前記膨張水排出管は、大気に連通する排水ホッパーを有する排水部に排水する即湯システムにおいて、前記圧力逃し弁は、前記給湯配管又は前記出湯管の内部流路に設けられ、前記貯湯タンクの湯水を水抜きの為に外部に排水する時に、前記貯湯タンクに繋がる内部流路を大気に連通させて空気を前記貯湯タンクの内部に供給させる吸気栓を有し、前記圧力逃がし弁が動作する前記所定の圧力よりも前記貯湯タンクの内部の圧力が低い状態で前記吸気栓を開いたとき、前記貯湯タンクの内部に空気が供給される前に、前記貯湯タンクに繋がる内部流路を前記膨張水排出管に接続する接続流路が形成されることにより、前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出可能であり、前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出した後に、前記排水ホッパーからの空気を前記膨張水排出管を介して前記貯湯タンクの内部に供給させることを特徴とする。
In order to solve the above-described problems, an immediate hot water system according to the present invention supplies hot water from a heat source device to a hot water storage tank via a hot water supply pipe, and hot water from the hot water storage tank is discharged via a hot water discharge pipe. a is provided with a mixing valve for opening and closing the internal passage of the previous SL tapping pipe, the hot water supply pipe, an internal flow path for supplying hot water to the hot water storage tank, the mixing valve without passing through the hot water storage tank When the internal pressure of the hot water storage tank reaches a predetermined pressure when heating the tap water of the hot water storage tank, the internal flow path connected to the hot water storage tank is discharged with expanded water. A pressure relief valve connected to a pipe to reduce the internal pressure of the hot water storage tank to a predetermined pressure or less, and the expansion water discharge pipe is an immediate hot water system for draining to a drainage section having a drainage hopper communicating with the atmosphere. Oh The pressure relief valve is provided in an internal flow path of the hot water supply pipe or the hot water discharge pipe, and when the hot water of the hot water storage tank is drained to the outside for draining, the internal flow path connected to the hot water storage tank is opened to the atmosphere. A suction plug that supplies air to the inside of the hot water storage tank, and the intake tap is opened in a state where the pressure inside the hot water storage tank is lower than the predetermined pressure at which the pressure relief valve operates. An internal flow connected to the hot water storage tank is formed by forming a connection flow path connecting the internal flow path connected to the hot water storage tank to the expansion water discharge pipe before air is supplied to the hot water storage tank. The hot water of the road can be discharged to the expansion water discharge pipe, and after discharging the hot water of the internal channel connected to the hot water storage tank to the expansion water discharge pipe, the air from the drain hopper is passed through the expansion water discharge pipe. Said Characterized in that to supply the interior of the hot water tank.
本発明の即湯システムによれば、貯湯タンクの内部の湯水の沸き上げ時に貯湯タンクの内部に圧縮された空気がある状態においても、貯湯タンクの内部に空気が供給される前に、貯湯タンクに繋がる内部流路を膨張水排出管に接続するため、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを防止することができる。
また、膨張水排出管から空気を貯湯タンクの内部に供給させるため、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを確実に防止し、吸気栓を開いた時の安全性を高めることができる。
さらに、排水ホッパーからの空気を貯湯タンクの内部に供給させるため、膨張水排出管に大気に連通する空気を供給する開口を設ける必要がない。
According to the instant hot water system of the present invention, even in a state where there is compressed air inside the hot water tank when the hot water in the hot water tank is boiled, the hot water tank is supplied before the air is supplied to the hot water tank. Since the internal flow path connected to the expansion water discharge pipe is connected, it is possible to prevent the hot water sprayed to the user who opened the intake plug from being applied.
In addition, since air is supplied to the inside of the hot water storage tank from the expansion water discharge pipe, it is possible to reliably prevent the hot water sprayed on the user who has opened the air intake plug from splashing, and to ensure safety when the air intake plug is opened. Can increase the sex.
Furthermore, since the air from the drain hopper is supplied into the hot water storage tank, it is not necessary to provide an opening for supplying air communicating with the atmosphere to the expanded water discharge pipe.
上記課題を解決するために本発明に係る即湯システムは、熱源機からの湯水を給湯配管を介して貯湯タンクに供給し、前記貯湯タンクからの湯水を出湯管を介して出湯する即湯システムであって、前記出湯管の内部流路を開閉する混合バルブを備え、前記給湯配管は、前記貯湯タンクに湯水を供給する内部流路と、前記貯湯タンクを経由することなく前記混合バルブに接続されるバイパス管を有し、前記貯湯タンクの水道水を加熱している時に、前記貯湯タンクの内部の圧力が所定の圧力になった場合、前記貯湯タンクに繋がる内部流路を膨張水排出管に接続させて前記貯湯タンクの内部の圧力を所定の圧力以下に減少させる圧力逃し弁を備えた即湯システムにおいて、前記圧力逃し弁は、前記給湯配管又は前記出湯管の内部流路に設けられ、前記貯湯タンクの湯水を水抜きの為に外部に排水する時に、前記貯湯タンクに繋がる内部流路を大気に連通させて空気を前記貯湯タンクの内部に供給させる吸気栓を有し、前記圧力逃がし弁が動作する前記所定の圧力よりも前記貯湯タンクの内部の圧力が低い状態で前記吸気栓を開いたとき、前記貯湯タンクの内部に空気が供給される前に、前記貯湯タンクに繋がる内部流路を前記膨張水排出管に接続する接続流路が形成されることにより、前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出可能であり、前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出した後に、前記膨張水排出管から空気を前記貯湯タンクの内部に供給させ、前記吸気栓は、前記膨張水排出管からの空気を前記貯湯タンクの上部に接続される出湯管を介して前記貯湯タンクの上部に供給させることを特徴とする。
In order to solve the above-described problems, an immediate hot water system according to the present invention supplies hot water from a heat source device to a hot water storage tank via a hot water supply pipe, and hot water from the hot water storage tank is discharged via a hot water discharge pipe. a is provided with a mixing valve for opening and closing the internal passage of the previous SL tapping pipe, the hot water supply pipe, an internal flow path for supplying hot water to the hot water storage tank, the mixing valve without passing through the hot water storage tank When the internal pressure of the hot water storage tank reaches a predetermined pressure when heating the tap water of the hot water storage tank, the internal flow path connected to the hot water storage tank is discharged with expanded water. In an immediate hot water system having a pressure relief valve that is connected to a pipe to reduce the internal pressure of the hot water storage tank to a predetermined pressure or less, the pressure relief valve is provided in an internal flow path of the hot water supply pipe or the hot water discharge pipe. Is The hot water of the hot water storage tank when drained out for drainage, has a suction plug for supplying air to the internal flow path is communicated with the atmosphere leading to the hot water storage tank inside the hot water storage tank, said pressure relief When the intake plug is opened in a state where the pressure inside the hot water tank is lower than the predetermined pressure at which the valve operates, an internal flow connected to the hot water tank is supplied before air is supplied to the hot water tank. By forming a connection flow path that connects a passage to the expansion water discharge pipe, the hot water in the internal flow path that connects to the hot water storage tank can be discharged to the expansion water discharge pipe, and the internal flow path that connects to the hot water storage tank After the hot water is discharged into the expansion water discharge pipe, air is supplied from the expansion water discharge pipe into the hot water storage tank, and the air intake plug has the air from the expansion water discharge pipe at the top of the hot water storage tank. Connection It is through the tapping tube, characterized in that to supply the top of the hot water storage tank.
本発明の即湯システムによれば、貯湯タンクの内部の湯水の沸き上げ時に貯湯タンクの内部に圧縮された空気がある状態においても、貯湯タンクの内部に空気が供給される前に、貯湯タンクに繋がる内部流路を膨張水排出管に接続するため、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを防止することができる。According to the instant hot water system of the present invention, even in a state where there is compressed air inside the hot water tank when the hot water in the hot water tank is boiled, the hot water tank is supplied before the air is supplied to the hot water tank. Since the internal flow path connected to the expansion water discharge pipe is connected, it is possible to prevent the hot water sprayed to the user who opened the intake plug from being applied.
また、膨張水排出管から空気を貯湯タンクの内部に供給させるため、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを確実に防止し、吸気栓を開いた時の安全性を高めることができる。In addition, since air is supplied to the inside of the hot water storage tank from the expansion water discharge pipe, it is possible to reliably prevent the hot water sprayed on the user who has opened the air intake plug from splashing, and to ensure safety when the air intake plug is opened. Can increase the sex.
さらに、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを防止しながら、膨張水排出管からの空気を貯湯タンクの上部に効率的に供給して貯湯タンクの湯水を排水管から排水しやすい構成になる。Furthermore, while preventing hot hot water spouted from the user who has opened the air intake tap, the air from the expansion water discharge pipe is efficiently supplied to the upper part of the hot water storage tank to drain the hot water from the hot water storage tank. It is easy to drain from the pipe.
本発明によれば、貯湯タンクの内部の湯水の沸き上げ時に貯湯タンクの内部に圧縮された空気がある状態においても、吸気栓を開いた使用者に噴出した高温の湯水がかかってしまうことを防止することができる。 According to the present invention, even when there is compressed air inside the hot water tank when boiling the hot water inside the hot water tank, high temperature hot water sprayed on the user who has opened the intake plug is applied. Can be prevented.
以下、本発明の即湯器について図を用いて説明する。図１は本発明の即湯器のシステム図である。尚、図６と同じ構成は同じ符号を付し、その説明を省く。 Hereinafter, the instant water heater of the present invention will be described with reference to the drawings. FIG. 1 is a system diagram of the instant water heater of the present invention. The same components as those in FIG. 6 are denoted by the same reference numerals, and description thereof is omitted.
図１に示すように、本発明の即湯器１は、水道水を加熱して貯湯する貯湯タンク２と、貯湯タンク２の湯水を貯湯タンク２から吐水部である水栓２２に出湯する出湯管１３と、貯湯タンク２の湯水を排水する排水管１５と、出湯管１３の内部流路を開閉することで貯湯タンク２の湯水を貯湯タンク２から水栓２２に給水又は止水する開閉手段である混合バルブ３と、を備えている。 As shown in FIG. 1, an instant water heater 1 of the present invention includes a hot water storage tank 2 that heats and stores tap water, and a hot water that discharges hot water from the hot water storage tank 2 to a faucet 22 that is a water discharge unit. Opening and closing means for supplying or stopping hot water in the hot water storage tank 2 from the hot water storage tank 2 to the faucet 22 by opening and closing an internal flow path of the hot water storage pipe 13 by opening and closing the pipe 13, the drain pipe 15 for draining hot water in the hot water storage tank 2 And a mixing valve 3.
また、本発明の即湯器１は、貯湯タンク２の水道水を加熱している時に、貯湯タンク２の内部の圧力が所定の圧力になった場合、混合バルブ３の上流側の内部流路を膨張水排出管２６に接続させ、貯湯タンク２の内部の圧力を所定の圧力以下に減少させる圧力逃し機構部７と、貯湯タンク２の湯水を排水管１５から排水する時に、貯湯タンク２の内部を大気に連通させ、貯湯タンク２の内部に空気を供給する吸気機構部６と、も備えている。 Further, the instant water heater 1 of the present invention has an internal flow path on the upstream side of the mixing valve 3 when the internal pressure of the hot water storage tank 2 becomes a predetermined pressure while heating the tap water of the hot water storage tank 2. Is connected to the expansion water discharge pipe 26 to reduce the internal pressure of the hot water storage tank 2 to a predetermined pressure or less, and when the hot water in the hot water storage tank 2 is drained from the drain pipe 15, Also provided is an intake mechanism section 6 that communicates the inside with the atmosphere and supplies air into the hot water storage tank 2.
図２に示すように、吸気栓付き圧力逃し弁５は吸気機構部６と圧力逃し機構部７との一体で構成されており、吸気機構部６は吸気をさせるために回転させる吸気栓ねじ部３１を備えた吸気栓３９と、吸気・排水通路４１を封止するためのＯリング３０と、吸気栓３９が外れないようにするための抜け止めねじ３２とで構成され、圧力逃し機構部７は弁座３３と、バネ３４と、開口部３８を備えたバネ押え３７と、膨張水排出通路３５とで構成されている。尚、吸気栓３９は回し過ぎて外れるのを防ぐために抜け止めねじ３２を備えており、膨張水排出通路３５以外からの噴出を防止することができる。また、圧力逃し機構部７は、洗面器２１の洗面器排水管２３に取り付けられた排水ホッパー２４へ膨張水排出管２６にて接続されている。この排水ホッパー２４には大気に連通する開口部２５が形成されている。 As shown in FIG. 2, the pressure relief valve 5 with the intake plug is configured integrally with an intake mechanism portion 6 and a pressure relief mechanism portion 7, and the intake mechanism screw portion that the intake mechanism portion 6 is rotated to allow intake. The pressure relief mechanism portion 7 is composed of an intake plug 39 provided with 31, an O-ring 30 for sealing the intake / drain passage 41, and a retaining screw 32 for preventing the intake plug 39 from coming off. Comprises a valve seat 33, a spring 34, a spring retainer 37 having an opening 38, and an expansion water discharge passage 35. The intake plug 39 is provided with a retaining screw 32 in order to prevent it from being turned too much and can prevent ejection from other than the expansion water discharge passage 35. The pressure relief mechanism 7 is connected to a drain hopper 24 attached to a basin drain pipe 23 of the basin 21 via an expansion water discharge pipe 26. The drain hopper 24 has an opening 25 communicating with the atmosphere.
図２は、本発明の吸気栓付き圧力逃し弁５の吸気栓３９を閉めた状態の断面図であるが、圧力逃し機構部７は、沸き上げ時の貯湯タンク２内の水の膨張による圧力上昇時に、貯湯タンク２内の圧力がバネ３４の押し力より大きくなると、図３に示すように弁座３３が図の右方向へ移動し、その結果、膨張水が矢印Ａ１で示すように貯湯タンク２内から圧力逃し通路４０へ排出され、そして矢印Ａ２で示すようにバネ押え３７に設けられた開口部３８を経由し、矢印Ａ３に示すように膨張水排出通路３５から排出され、貯湯タンク２が保護される。そして、膨張水排出通路３５から排出された膨張水は、膨張水排出管２６を経由して洗面器排水管２３に取り付けられた排水ホッパー２４へと排出される。 FIG. 2 is a cross-sectional view of the pressure relief valve 5 with the air intake plug of the present invention in a state in which the air intake plug 39 is closed. The pressure relief mechanism 7 is a pressure caused by the expansion of water in the hot water storage tank 2 during boiling. When the pressure in the hot water storage tank 2 becomes larger than the pushing force of the spring 34 at the time of rising, the valve seat 33 moves to the right in the drawing as shown in FIG. 3, and as a result, the expanded water is stored in the hot water storage as shown by the arrow A1. It is discharged from the tank 2 to the pressure relief passage 40, and is discharged from the expansion water discharge passage 35 as shown by the arrow A3 through the opening 38 provided in the spring retainer 37 as shown by the arrow A2, and is stored in the hot water storage tank. 2 is protected. Then, the expanded water discharged from the expanded water discharge passage 35 is discharged to the drain hopper 24 attached to the basin drain pipe 23 via the expanded water discharge pipe 26.
更に、本発明の即湯器１は、吸気機構部６が、貯湯タンク２の内部に空気を供給する前に、開閉手段である混合バルブ３の上流側の内部流路を膨張水排出通路３５に接続する接続流路４２が形成され、貯湯タンク２の湯水を膨張水排出通路３５に排出可能としている。 Further, in the instant water heater 1 of the present invention, before the intake mechanism section 6 supplies air to the hot water storage tank 2, the expansion water discharge passage 35 is connected to the internal flow path upstream of the mixing valve 3 serving as an opening / closing means. A connection flow path 42 is formed to connect to the hot water storage tank 2 so that hot water in the hot water storage tank 2 can be discharged to the expansion water discharge passage 35.
図４は、本発明の吸気栓付き圧力逃し弁の吸気栓を開けた状態において排水経路を示す断面図であるが、貯湯タンク２を満水にする際に、吸気栓３９を回転させると、吸気栓３９が図の右方向へ移動し、Ｏリング３０でシールされていた吸気・排水通路４１が開放される。そのため、吸気・排水通路４１→接続流路４２→バネ押え３７の開口部３８→膨張水排出通路３５の経路が確保され、ここから貯湯タンク２内の空気が逃げることにより、貯湯タンク２を満水にすることができる。 FIG. 4 is a cross-sectional view showing the drainage path in a state in which the intake valve of the pressure relief valve with an intake valve of the present invention is opened. When the intake valve 39 is rotated when the hot water storage tank 2 is full, The plug 39 moves to the right in the figure, and the intake / drain passage 41 sealed with the O-ring 30 is opened. Therefore, a path of intake / drain passage 41 → connection passage 42 → opening 38 of spring retainer 37 → expansion water discharge passage 35 is ensured, and air in hot water storage tank 2 escapes from here to fill hot water storage tank 2 with water. Can be.
凍結防止等のために貯湯タンク２内や出湯管１３やバイパス管１６等の配管内の水を排出させる際には、給湯止水栓１９を閉めて排水栓１１を開き、吸気栓３９を回転させると、吸気・排水通路４１→接続流路４２→バネ押え３７の開口部３８→膨張水排出通路３５の経路が確保される。貯湯タンク２の湯水を膨張水排出通路３５に排出した後に、図５に示すように排水ホッパー２４に設けられた開口部２５から膨張水排出管２６を経由して、膨張水排出通路３５→バネ押え３７の開口部３８→接続流路４２→吸気・排水通路４１を経由して、矢印Ｃ５〜矢印Ｃ１で示すように外気が取り込まれることになり、問題なく、貯湯タンク２内や出湯管１３やバイパス管１６等の配管内の水の排出ができる。 When draining the water in the hot water storage tank 2 or the hot water discharge pipe 13 or the bypass pipe 16 to prevent freezing, the hot water stop cock 19 is closed, the drain plug 11 is opened, and the intake plug 39 is rotated. As a result, a path of intake / drain passage 41 → connection passage 42 → opening 38 of spring retainer 37 → expansion water discharge passage 35 is secured. After the hot water in the hot water storage tank 2 is discharged to the expansion water discharge passage 35, the expansion water discharge passage 35 → spring is opened from the opening 25 provided in the drain hopper 24 via the expansion water discharge pipe 26 as shown in FIG. Outside air is taken in as shown by arrows C5 to C1 via the opening 38 of the presser 37 → the connection flow path 42 → the intake / drain passage 41, and there is no problem in the hot water storage tank 2 or the hot water discharge pipe 13 without any problem. And water in the pipe such as the bypass pipe 16 can be discharged.
本発明に係る即湯器１は、万一、貯湯タンク２内に圧縮された空気が溜まっていても、吸気機構部６が貯湯タンク２の内部に空気を供給する前に、混合バルブ３の上流側の内部流路を膨張水排出通路３５に接続し、膨張水排出管２６を経由して排水ホッパー２４へ排出されるため、吸気機構部６を開いた使用者に噴出した高温の湯水がかかってしまうことを防止することができる。また、外気を膨張水排出管２６から貯湯タンク２の内部に供給するため、吸気機構部６を開いた使用者に噴出した高温の湯水がかかってしまうことを確実に防止し、吸気機構部６を開いた時の安全性を高めることができる。更に、吸気機構部６が貯湯タンク２の上部に接続される出湯管１３を介して外気を貯湯タンク２の上部に供給するため、外気を貯湯タンクの上部に効率的に供給して貯湯タンクの湯水を排水管から排水しやすい構成になる。 In the instant hot water device 1 according to the present invention, even if compressed air is accumulated in the hot water storage tank 2, before the intake mechanism 6 supplies air into the hot water storage tank 2, Since the internal flow path on the upstream side is connected to the expansion water discharge passage 35 and discharged to the drain hopper 24 via the expansion water discharge pipe 26, the hot hot water spouted to the user who opened the intake mechanism section 6 is discharged. This can be prevented. Further, since the outside air is supplied from the expansion water discharge pipe 26 into the hot water storage tank 2, it is possible to surely prevent the hot water sprayed on the user who has opened the intake mechanism 6 from being splashed, and the intake mechanism 6. The safety when opening the door can be increased. Furthermore, since the intake mechanism 6 supplies outside air to the upper part of the hot water storage tank 2 via the hot water discharge pipe 13 connected to the upper part of the hot water storage tank 2, the outside air is efficiently supplied to the upper part of the hot water storage tank. It is easy to drain hot water from the drain pipe.
また、熱源機１７が高温の湯水しか供給できず、かつ、熱源機１７から即湯器１までの給湯配管２９が短い場合において、設置直後の試運転時等の貯湯タンク２が満水になる前に、予め設定された混合温度（例えば３８℃）以上の湯水が混合バルブ３へ到達し、混合バルブ３内の感温素子が出湯管１３からの貯湯タンク２内の高温の湯水の流入を阻止しても、吸気栓３９を回して吸気・排水通路４１を開放しておくことにより、吸気・排水通路４１→接続流路４２→バネ押え３７の開口部３８→膨張水排出通路３５の経路より矢印Ｂ１から矢印Ｂ５で示すように貯湯タンク２内の空気を排出し、貯湯タンク２内を満水にできる。 In addition, when the heat source device 17 can supply only hot water and the hot water supply pipe 29 from the heat source device 17 to the immediate water heater 1 is short, before the hot water storage tank 2 becomes full during a test operation immediately after installation. Then, hot water of a preset mixing temperature (for example, 38 ° C.) or more reaches the mixing valve 3, and the temperature sensing element in the mixing valve 3 prevents the hot water from flowing into the hot water storage tank 2 from the hot water discharge pipe 13. Even if the intake plug 39 is turned to open the intake / drain passage 41, the intake / drain passage 41 → the connection passage 42 → the opening 38 of the spring retainer 37 → the expansion water discharge passage 35 through the arrow. As indicated by an arrow B5 from B1, the air in the hot water storage tank 2 can be discharged to fill the hot water storage tank 2 with water.
その結果、予め設定された温度の湯水を出湯させるための混合バルブ３を備えた即湯器１において、熱源機１７が高温の湯水しか供給できず、かつ、熱源機１７から即湯器１までの給湯配管２９が短い場合においても、貯湯タンク２に空気が残ることなく満水にすることができて、水抜き時に、吸気機構部６から貯湯タンク２の高温の湯水が噴出する恐れがなく、かつ、コンパクトな即湯器１を実現でき、洗面化粧台やキッチンのキャビネット内に設置する際に、引き出し等に干渉することがなく設置できるようになる。 As a result, in the instant water heater 1 provided with the mixing valve 3 for discharging hot water having a preset temperature, the heat source device 17 can supply only hot water and the heat source device 17 to the immediate water heater 1. Even when the hot water supply pipe 29 is short, the hot water storage tank 2 can be filled with air without remaining, and there is no fear that hot water in the hot water storage tank 2 will be ejected from the intake mechanism section 6 when draining water. In addition, a compact instant water heater 1 can be realized and can be installed without interfering with a drawer or the like when installed in a bathroom vanity or a kitchen cabinet.
以上のように、吸気経路と圧力逃し経路を共通にするとともに、吸気機構部６と圧力逃し機構部７を一体化する構成とすることにより、吸気機構部６と圧力逃し機構部７を小さくすることができ、コンパクトな即湯器１を実現できる。 As described above, the intake path and the pressure relief path are made common, and the intake mechanism 6 and the pressure relief mechanism 7 are integrated to reduce the size of the intake mechanism 6 and the pressure relief mechanism 7. And a compact instant water heater 1 can be realized.
１…即湯器
２…貯湯タンク
３…混合バルブ
４…逆止弁
５…吸気栓付き圧力逃し弁
６…吸気機構部
７…圧力逃し機構部
８…電気ヒーター
９…温度調節器
１０…給湯口
１１…排水栓
１２…出湯口
１３…出湯管
１４…吸気管
１５…排水管
１６…バイパス管
１７…熱源機
１８…給水源
１９…給湯止水栓
２０…給水止水栓
２１…洗面器
２２…水栓
２３…洗面器排水管
２４…排水ホッパー
２５…開口部
２６…膨張水排出管
２７…出湯配管
２８…給水配管
２９…給湯配管
３０…Ｏリング
３１…吸気栓ねじ部
３２…抜け止めねじ
３３…弁座
３４…バネ
３５…膨張水排出通路
３６…手動操作レバー付き圧力逃し弁
３７…バネ押え
３８…開口部
３９…吸気栓
４０…圧力逃し通路
４１…吸気・排水通路
４２…接続流路
DESCRIPTION OF SYMBOLS 1 ... Instant water heater 2 ... Hot water storage tank 3 ... Mixing valve 4 ... Check valve 5 ... Pressure relief valve 6 with a suction plug ... Intake mechanism part 7 ... Pressure relief mechanism part 8 ... Electric heater 9 ... Temperature controller 10 ... Hot water inlet DESCRIPTION OF SYMBOLS 11 ... Drain plug 12 ... Outlet 13 ... Outlet pipe 14 ... Intake pipe 15 ... Drain pipe 16 ... Bypass pipe 17 ... Heat source machine 18 ... Water supply source 19 ... Hot water stop cock 20 ... Water supply stop cock 21 ... Basin 22 ... Faucet 23 ... basin drain pipe 24 ... drain hopper 25 ... opening 26 ... expansion water discharge pipe 27 ... hot water supply pipe 28 ... water supply pipe 29 ... hot water supply pipe 30 ... O-ring 31 ... intake plug screw part 32 ... retaining screw 33 ... valve seat 34 ... spring 35 ... expansion water discharge passage 36 ... pressure relief valve 37 with manual operation lever ... spring retainer 38 ... opening 39 ... intake plug 40 ... pressure relief passage 41 ... intake / drain passage 42 ... connection flow path
Claims (2)
前記出湯管の内部流路を開閉する混合バルブを備え、
前記給湯配管は、前記貯湯タンクに湯水を供給する内部流路と、前記貯湯タンクを経由することなく前記混合バルブに接続されるバイパス管を有し、
前記貯湯タンクの水道水を加熱している時に、前記貯湯タンクの内部の圧力が所定の圧力になった場合、前記貯湯タンクに繋がる内部流路を膨張水排出管に接続させて前記貯湯タンクの内部の圧力を所定の圧力以下に減少させる圧力逃し弁を備え、前記膨張水排出管は、大気に連通する排水ホッパーを有する排水部に排水する即湯システムにおいて、
前記圧力逃し弁は、
前記給湯配管又は前記出湯管の内部流路に設けられ、
前記貯湯タンクの湯水を水抜きの為に外部に排水する時に、前記貯湯タンクに繋がる内部流路を大気に連通させて空気を前記貯湯タンクの内部に供給させる吸気栓を有し、
前記圧力逃がし弁が動作する前記所定の圧力よりも前記貯湯タンクの内部の圧力が低い状態で前記吸気栓を開いたとき、前記貯湯タンクの内部に空気が供給される前に、前記貯湯タンクに繋がる内部流路を前記膨張水排出管に接続する接続流路が形成されることにより、前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出可能であり、
前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出した後に、前記排水ホッパーからの空気を前記膨張水排出管を介して前記貯湯タンクの内部に供給させることを特徴とする即湯システム。 An instant hot water system that supplies hot water from a heat source machine to a hot water storage tank via a hot water supply pipe, and hot water from the hot water storage tank is discharged via a hot water discharge pipe,
Comprising a mixing valve for opening and closing the internal passage of the previous SL tapping pipe,
The hot water supply pipe has an internal flow path for supplying hot water to the hot water storage tank, and a bypass pipe connected to the mixing valve without going through the hot water storage tank,
When the tap water in the hot water storage tank is heated and the internal pressure of the hot water storage tank reaches a predetermined pressure, an internal flow path connected to the hot water storage tank is connected to an expansion water discharge pipe to connect the hot water storage tank. In the hot water system comprising a pressure relief valve for reducing the internal pressure below a predetermined pressure, the expansion water discharge pipe drains into a drainage section having a drainage hopper communicating with the atmosphere.
The pressure relief valve is
Provided in an internal flow path of the hot water supply pipe or the hot water discharge pipe,
When the hot water in the hot water storage tank is drained to the outside for draining water, an internal air passage connected to the hot water storage tank is connected to the atmosphere to supply air into the hot water storage tank,
When the intake plug is opened in a state where the pressure inside the hot water storage tank is lower than the predetermined pressure at which the pressure relief valve operates , the air is supplied to the hot water storage tank before air is supplied to the hot water storage tank. By forming a connection flow path that connects a connected internal flow path to the expansion water discharge pipe, hot water in the internal flow path connected to the hot water storage tank can be discharged to the expansion water discharge pipe,
Immediately after discharging hot water in an internal flow channel connected to the hot water storage tank to the expansion water discharge pipe, air from the drain hopper is supplied into the hot water storage tank through the expansion water discharge pipe. Hot water system.
前記出湯管の内部流路を開閉する混合バルブを備え、
前記給湯配管は、前記貯湯タンクに湯水を供給する内部流路と、前記貯湯タンクを経由することなく前記混合バルブに接続されるバイパス管を有し、
前記貯湯タンクの水道水を加熱している時に、前記貯湯タンクの内部の圧力が所定の圧力になった場合、前記貯湯タンクに繋がる内部流路を膨張水排出管に接続させて前記貯湯タンクの内部の圧力を所定の圧力以下に減少させる圧力逃し弁を備えた即湯システムにおいて、
前記圧力逃し弁は、
前記給湯配管又は前記出湯管の内部流路に設けられ、
前記貯湯タンクの湯水を水抜きの為に外部に排水する時に、前記貯湯タンクに繋がる内部流路を大気に連通させて空気を前記貯湯タンクの内部に供給させる吸気栓を有し、
前記圧力逃がし弁が動作する前記所定の圧力よりも前記貯湯タンクの内部の圧力が低い状態で前記吸気栓を開いたとき、前記貯湯タンクの内部に空気が供給される前に、前記貯湯タンクに繋がる内部流路を前記膨張水排出管に接続する接続流路が形成されることにより、前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出可能であり、
前記貯湯タンクに繋がる内部流路の湯水を前記膨張水排出管に排出した後に、前記膨張水排出管から空気を前記貯湯タンクの内部に供給させ、
前記吸気栓は、前記膨張水排出管からの空気を前記貯湯タンクの上部に接続される出湯管を介して前記貯湯タンクの上部に供給させることを特徴とする即湯システム。 An instant hot water system that supplies hot water from a heat source machine to a hot water storage tank via a hot water supply pipe, and hot water from the hot water storage tank is discharged via a hot water discharge pipe,
Comprising a mixing valve for opening and closing the internal passage of the previous SL tapping pipe,
The hot water supply pipe has an internal flow path for supplying hot water to the hot water storage tank, and a bypass pipe connected to the mixing valve without going through the hot water storage tank,
When the tap water in the hot water storage tank is heated and the internal pressure of the hot water storage tank reaches a predetermined pressure, an internal flow path connected to the hot water storage tank is connected to an expansion water discharge pipe to connect the hot water storage tank. In the hot water system with a pressure relief valve that reduces the internal pressure below a predetermined pressure,
The pressure relief valve is
Provided in an internal flow path of the hot water supply pipe or the hot water discharge pipe,
When the hot water in the hot water storage tank is drained to the outside for draining water, an internal air passage connected to the hot water storage tank is connected to the atmosphere to supply air into the hot water storage tank,
When the intake plug is opened in a state where the pressure inside the hot water storage tank is lower than the predetermined pressure at which the pressure relief valve operates , the air is supplied to the hot water storage tank before air is supplied to the hot water storage tank. By forming a connection flow path that connects a connected internal flow path to the expansion water discharge pipe, hot water in the internal flow path connected to the hot water storage tank can be discharged to the expansion water discharge pipe,
After discharging hot water in an internal flow path connected to the hot water storage tank to the expansion water discharge pipe, air is supplied from the expansion water discharge pipe to the inside of the hot water storage tank,
The hot water system is characterized in that the intake plug supplies air from the expanded water discharge pipe to the upper part of the hot water storage tank via a hot water pipe connected to the upper part of the hot water storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012172095A JP6176586B2 (en) | 2012-08-02 | 2012-08-02 | Instant hot water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012172095A JP6176586B2 (en) | 2012-08-02 | 2012-08-02 | Instant hot water system |
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| JP2014031934A JP2014031934A (en) | 2014-02-20 |
| JP2014031934A5 JP2014031934A5 (en) | 2015-09-17 |
| JP6176586B2 true JP6176586B2 (en) | 2017-08-09 |
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| JP6730142B2 (en) * | 2016-09-06 | 2020-07-29 | 株式会社Ｌｉｘｉｌ | Hot water storage type water heater |
| JP2018105459A (en) * | 2016-12-27 | 2018-07-05 | 株式会社Ｌｉｘｉｌ | Fitting structure of screw member |
| WO2023242612A1 (en) * | 2022-06-13 | 2023-12-21 | Maddah Ali | Mechanism for providing hot water at the beginning of usage |
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| JPH0118986Y2 (en) * | 1984-10-31 | 1989-06-02 | ||
| JPH074448Y2 (en) * | 1988-07-27 | 1995-02-01 | 東芝機器株式会社 | Water heater drainage system |
| JP2003336907A (en) * | 2002-05-20 | 2003-11-28 | Toto Ltd | Instantaneous water heater |
| JP5614719B2 (en) * | 2010-11-26 | 2014-10-29 | Toto株式会社 | Hot water storage type electric water heater |
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