JP2007040557A

JP2007040557A - Open type hot water supply device

Info

Publication number: JP2007040557A
Application number: JP2005222419A
Authority: JP
Inventors: Susumu Kazama; 進風間; Seiichi Ota; 清一太田
Original assignee: Corona Corp
Current assignee: Corona Corp
Priority date: 2005-08-01
Filing date: 2005-08-01
Publication date: 2007-02-15

Abstract

<P>PROBLEM TO BE SOLVED: To provide an open type hot water supply device easily carrying out hot water supply, utilizing an open type hot water storage can. <P>SOLUTION: The hot water storage can 1 storing hot water heated by a heating means 2 is communicated with a water feed pipe 4 provided with a feed valve 7. The feed valve 7 is opened and closed in response to a water level of a water level sensor 6 detecting a water level in the hot water storage can 1 to constantly maintain a certain water level. Since a hot water supply heat exchanger 9 is provided in the hot water storage can 1, feed water from the water feed pipe 4 is subjected to heat exchange with the hot water in the hot water storage can 1 to be supplied as feed hot water, and the hot water storage can is an atmospherically opened type, modification can be carried out such that only a small installation space is needed. Since direct pressure hot water supply using water service pressure is carried out in hot water supply, neither a hot water supply booster pump nor complicated control is needed, favorable hot water supply is always possible, and it can be reliably used. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、貯湯缶体内に給水圧がかからずに、大気開放状態とした貯湯式の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 in which a hot water supply pressure is not applied to a hot water storage can and the atmosphere is opened.

従来よりこの種の開放式給湯装置では、貯湯缶体内のレベルセンサである水位検知手段で水位を検知して給水電磁弁開閉制御して一定の水位を保持するものであり、又給湯は給湯加圧ポンプで圧送するものであった。（例えば、特許文献１参照）
特公平７−１１７２９３号公報 Conventionally, in this type of open-type hot water supply device, the water level is detected by a water level detection means that is a level sensor in the hot water storage can, and the water supply solenoid valve is controlled to open and close to maintain a constant water level. It was pumped with a pressure pump. (For example, see Patent Document 1)
Japanese Patent Publication No.7-1117293

ところでこの従来のものでは、給湯加圧ポンプのＯＮ、ＯＦＦタイミングが難しく、給湯栓を開いて給湯要求していても給湯加圧ポンプがなかなかＯＮせず、給湯が開始されなかったり、逆に給湯栓を閉めて給湯を停止したのに給湯加圧ポンプがＯＦＦせず、給湯管内が加圧状態になると言う不具合を有するものであった。 By the way, with this conventional one, it is difficult to turn on and off the hot water pressurizing pump, and even if a hot water supply is requested by opening the hot water tap, the hot water pressurizing pump does not turn on easily, hot water supply does not start, or conversely Although the hot water supply was stopped by closing the stopper, the hot water supply pressure pump was not turned off, and the hot water supply pipe was in a pressurized state.

この発明はこの点に着目し、上記欠点を解決する為、特にその構成を、請求項１では、加熱手段で加熱された温水を貯湯する貯湯缶体と、前記貯湯缶体には給水弁を備えた給水管が連通し、この給水弁を貯湯缶体内の水位を検知する水位センサの水位に応じて開閉し常に一定水位を保持するようにしたものに於いて、前記貯湯缶体内には給湯用熱交換器を備え、給水管からの給水を貯湯缶体内の温水と熱交換して、給湯として供給するものである。 The present invention pays attention to this point, and in order to solve the above-mentioned drawbacks, in particular, according to claim 1, in claim 1, a hot water storage can body for storing hot water heated by the heating means, and a hot water supply valve is provided on the hot water storage can body. A water supply pipe is provided, and the water supply valve is opened and closed according to the water level of the water level sensor for detecting the water level in the hot water storage can so as to keep a constant water level. A heat exchanger is provided, and water supplied from the water supply pipe is heat-exchanged with hot water in the hot water storage can and supplied as hot water.

請求項２では、前記加熱手段は貯湯缶体の上下に備えられた電熱ヒータで構成されると共に、該貯湯缶体には上下を結ぶ循環回路と循環ポンプとが備えられているものである。 According to a second aspect of the present invention, the heating means includes electric heaters provided above and below the hot water storage can body, and the hot water storage can body includes a circulation circuit and a circulation pump that connect the upper and lower sides.

請求項１の発明によれば、大気開放式の貯湯缶体であるので、ある程度自由な形状として、設置スペースが小さくて済むように工夫することが出来、又給湯は水道圧を利用した直圧の給湯が行われ、給湯加圧ポンプも不用で難しい制御いらず、常に良好な給湯が可能で安心して使用出来るものである。 According to the invention of claim 1, since it is an open-air hot water storage can body, it can be devised so that the installation space can be reduced to a certain degree of freedom, and the hot water supply is a direct pressure utilizing water pressure. The hot water supply pressurizing pump is unnecessary and does not require difficult control, and good hot water supply is always possible and can be used with peace of mind.

請求項２の発明によれば、上下の電熱ヒータで加熱し、循環ポンプで下方の温度低下した温水を上部に移動させて加熱するので、常に貯湯缶体内を高温状態に保持出来、常に効率の良い給湯が行われるものである。 According to the second aspect of the invention, heating is performed by the upper and lower electric heaters, and the hot water whose temperature is lowered below is moved to the upper portion by the circulation pump and heated, so that the hot water storage can body can always be maintained in a high temperature state, which is always efficient. Good hot water is provided.

次にこの発明の開放式給湯装置の一実施形態について説明する。
１は温水を貯湯する貯湯缶体、２は温水を加熱する加熱手段として貯湯缶体１の上下位置に備えた２本の電熱ヒータである。 Next, an embodiment of the open type hot water supply apparatus of the present invention will be described.
Reference numeral 1 denotes a hot water storage can body for storing hot water, and 2 denotes two electric heaters provided as upper and lower positions of the hot water storage can body 1 as heating means for heating the hot water.

３は貯湯缶体１の上部と連通したシスターンタンクで、給水管４から分岐した入水管５が接続し、該入水管５にはシスターンタンク３内の水位を検知する水位センサ６によって開閉制御される給水弁７が備えられ、水位は常に貯湯缶体１内が満杯になるように設定され、貯湯缶体１上端とシスターンタンク３上部とはエアー抜き管８で連通されている。 Reference numeral 3 denotes a cis-turn tank communicating with the upper part of the hot water storage can body 1. A water inlet pipe 5 branched from the water supply pipe 4 is connected to the water inlet pipe 5, and the water inlet / outlet pipe 5 is controlled to be opened and closed by a water level sensor 6. A water supply valve 7 is provided, and the water level is always set so that the inside of the hot water storage can body 1 is full, and the upper end of the hot water storage can body 1 and the upper part of the cistern tank 3 are communicated by an air vent pipe 8.

９は貯湯缶体１内に備えられた蛇管から成る給湯用熱交換器で、給水管４と給湯管１０との間に並列状態で３個接続されており、給湯栓１１の開栓で水道圧を利用した直圧で押し出されて給湯が行われるものであり、給湯管１０の途中には給湯と給水とをミキシングして設定された給湯温度の温水とするミキシング弁１２が備えられている。 Reference numeral 9 denotes a hot water supply heat exchanger composed of a serpentine pipe provided in the hot water storage can body 1, and three are connected in parallel between the water supply pipe 4 and the hot water supply pipe 10. Hot water is supplied by being pushed out by direct pressure using pressure, and a mixing valve 12 is provided in the middle of the hot water supply pipe 10 to make hot water at a hot water temperature set by mixing hot water and water. .

１３は貯湯缶体１内に備えられた風呂用熱交換器で、浴槽（図示せず）と連通して浴槽湯温が低下した時に追い焚き指示を受けて、貯湯缶体１内の温水との熱交換で追い焚きするものである。 13 is a bath heat exchanger provided in the hot water storage can body 1, which communicates with a bathtub (not shown) and receives a chasing instruction when the hot water temperature of the bathtub decreases, It will catch up with the heat exchange.

１４は貯湯缶体１の上下を連通する循環回路で、途中には下方の温水を上方に放出する循環ポンプ１５が備えられ、貯湯缶体１内の温水温度を均一に保持するように循環駆動するものである。
１６はシスターンタンク３の一定水位上で開口したオーバーフロー管である。 Reference numeral 14 denotes a circulation circuit that communicates the upper and lower sides of the hot water storage can body 1. A circulation pump 15 that discharges hot water below is provided on the way, and is circulated and driven so as to keep the hot water temperature in the hot water storage can body 1 uniform. To do.
Reference numeral 16 denotes an overflow pipe opened at a certain water level in the cistern tank 3.

次にこの一実施形態の作動について説明すれば、電熱ヒータ２によって深夜電力等を利用し貯湯缶体１内に高温水を貯湯するものであり、そしてこの状態で給湯栓１１を開栓することで、給水管４からの給水が給湯用熱交換器９を通過することにより、貯湯缶体１内の高温水と熱交換して温度上昇した給水は、給湯水として給湯管１０のミキシング弁１２で給水とミキシングして、設定温度の給湯を給湯栓１１から供給するものである。 Next, the operation of this embodiment will be described. The hot water is stored in the hot water storage can 1 using the electric heater 2 at midnight power and the hot water tap 11 is opened in this state. Thus, when the water supplied from the water supply pipe 4 passes through the hot water supply heat exchanger 9, the water supply whose temperature has been increased by exchanging heat with the high-temperature water in the hot water storage can 1 is mixed with the mixing valve 12 of the hot water supply pipe 10 as hot water. The hot water at the set temperature is supplied from the hot water tap 11 by mixing with the water supply.

更に給湯使用量にもよるが、貯湯缶体１内の温水温度が給湯用熱交換器９との熱交換で徐々に低下すると、貯湯缶体１内の温水温度を検知する温度センサ（図示せず）がこれを検知して、上の電熱ヒータ２の通電を開始すると共に、循環ポンプ１５を駆動させて貯湯缶体１下方の低温水を上方へ放出して、電熱ヒータ２で効率よく加熱して貯湯缶体１内全体を均一に高温水の貯湯状態とするものである。 Further, depending on the amount of hot water used, a temperature sensor (not shown) detects the temperature of hot water in the hot water storage can body 1 when the temperature of the hot water in the hot water storage body 1 gradually decreases due to heat exchange with the hot water heat exchanger 9. ) Detects this, starts energization of the upper electric heater 2, drives the circulation pump 15 to discharge low-temperature water below the hot water storage can body 1, and efficiently heats it with the electric heater 2. Thus, the entire hot water storage can body 1 is uniformly stored in hot water.

又貯湯缶体１内では、水分の蒸発で徐々に水位が低下するが、一定水位を所定量低下することで、給水弁７が開成し給水管４から給水の補給がなされ、常に大気開放で一定量貯湯で加熱用の温水が保持るものである。 In the hot water storage can 1, the water level gradually decreases due to the evaporation of water, but by reducing the constant water level by a predetermined amount, the water supply valve 7 is opened and water supply is replenished from the water supply pipe 4, so that the atmosphere is always open to the atmosphere. A certain amount of hot water is used to hold hot water for heating.

このようにこの発明では、加熱用の貯湯缶体１が大気開放されていることにより、その形状に制約を受けることがなく、設置スペースを考慮しての設計が可能であり、構成も簡単で容易に作製出来、又この貯湯缶体１内の高温水と給水との熱交換で給湯を行うようにしたことで、給湯は水道直圧で給湯加圧ポンプも不用で、難しい制御の必要もなく、容易に給湯が行われるものである。 Thus, in this invention, since the hot water storage can body 1 for heating is open to the atmosphere, the shape is not restricted, the design considering the installation space is possible, and the configuration is also simple. The hot water supply can be easily manufactured, and the hot water is supplied by exchanging heat between the high-temperature water and the hot water in the hot water storage can body 1 so that the hot water is directly supplied with water and no hot water pressurizing pump is required. There is no hot water supply.

この発明の一実施形態を示す開放式給湯装置の概略構成図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the open-type hot-water supply apparatus which shows one Embodiment of this invention.

符号の説明Explanation of symbols

１貯湯缶体
２加熱手段
４給水管
６水位センサ
７給水弁
９給湯用熱交換器 DESCRIPTION OF SYMBOLS 1 Hot water storage can body 2 Heating means 4 Water supply pipe 6 Water level sensor 7 Water supply valve 9 Heat exchanger for hot water supply

Claims

加熱手段で加熱された温水を貯湯する貯湯缶体と、前記貯湯缶体には給水弁を備えた給水管が連通し、この給水弁を貯湯缶体内の水位を検知する水位センサの水位に応じて開閉し常に一定水位を保持するようにしたものに於いて、前記貯湯缶体内には給湯用熱交換器を備え、給水管からの給水を貯湯缶体内の温水と熱交換して、給湯として供給する事を特徴とする開放式給湯装置。 A hot water can body for storing hot water heated by the heating means and a water supply pipe provided with a water supply valve communicate with the hot water storage can body, and this water supply valve corresponds to the water level of a water level sensor for detecting the water level in the hot water storage can body. The hot water storage can is provided with a hot water supply heat exchanger, and the hot water supplied from the water supply pipe is exchanged with the hot water in the hot water storage can to provide a hot water supply. An open-type hot water supply device characterized by supply.

前記加熱手段は貯湯缶体の上下に備えられた電熱ヒータで構成されると共に、該貯湯缶体には上下を結ぶ循環回路と循環ポンプとが備えられている事を特徴とする請求項１記載の開放式給湯装置。 2. The heating means is constituted by electric heaters provided above and below a hot water storage can body, and the hot water storage can body is provided with a circulation circuit and a circulation pump connecting the upper and lower sides. Open water heater.