JPH06123487A - Control method of a plurality of hot water suppliers - Google Patents

Control method of a plurality of hot water suppliers

Info

Publication number
JPH06123487A
JPH06123487A JP29814292A JP29814292A JPH06123487A JP H06123487 A JPH06123487 A JP H06123487A JP 29814292 A JP29814292 A JP 29814292A JP 29814292 A JP29814292 A JP 29814292A JP H06123487 A JPH06123487 A JP H06123487A
Authority
JP
Japan
Prior art keywords
hot water
water
water supply
valve
bypass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP29814292A
Other languages
Japanese (ja)
Other versions
JP2586782B2 (en
Inventor
Tadahiko Oshio
忠彦 大塩
Masakane Kuboya
賢謙 久保谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noritz Corp
Original Assignee
Noritz Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noritz Corp filed Critical Noritz Corp
Priority to JP4298142A priority Critical patent/JP2586782B2/en
Publication of JPH06123487A publication Critical patent/JPH06123487A/en
Application granted granted Critical
Publication of JP2586782B2 publication Critical patent/JP2586782B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To improve the durability of instruments by preventing a water hammer from being produced upon controlling the amount of hot water supply by increasing/decreasing the opera tion number of parallel hot water apparatuses. CONSTITUTION:When upon initiation of hot water supply only a hot water supplier 1 stays at a state where it is capable of supplying hot water, a hot water supply solenoid valve and a bypass water amount adjusting valve are opened and a water amount adjusting valve is closed, and once the required minimum amount of supplied water is constructed, hot water supply operation is initiated. Further, when a required number (required amount of hot water supply) G is a number (hot water supply capability) A of the hot water supplier 1 having an instantaneous hot water supply function or less, only the hot water supplier 1 continues the hot water supply operation when the required number G is the number A of the hot water supplier 1 or more, the water amount adjusting valve and the bypass water amount adjusting valve of a hot water supplier 2 kept on standby are once fully closed, and thereafter the hot water supply solenoid valve is opened and then the water amount adjusting valve and the bypass water amount adjusting valve are opened to increase the amount of supply water and initiate the hot water supply operation. When the required number G is the sum B of the numbers of the hot water suppliers 1 and 2 having an instantaneous hot water supply function or less, the two hot water suppliers 1, 2 continue the hot water supply operation. When the required number G is B or more, a hot water supplier 3 is similarly operated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、複数の給湯器を併設
し、単独運転或いは同時運転を行うことによって出湯能
力を大幅に拡大した並列型給湯装置の運転制御方法に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control method for a parallel type hot water supply apparatus in which a plurality of hot water heaters are provided side by side and the hot water discharge capacity is greatly expanded by performing independent operation or simultaneous operation.

【0002】[0002]

【従来の技術】従来、単独の給湯器の出湯能力を超えた
給湯需要がある場合、或いは給湯需要の変化幅が非常に
大きい場合には、複数(例えば、3台)の給湯器を併設
し、個々の給湯器を単独運転、或いは複数の給湯器を同
時運転することにより、最大出湯能力を大幅に拡大して
成る並列型給湯装置が用いられている。
2. Description of the Related Art Conventionally, when there is a hot water supply demand that exceeds the hot water supply capacity of a single hot water supply device or when the change range of the hot water supply demand is very large, a plurality of (for example, three) water heaters are installed side by side. A parallel hot water supply device is used in which the maximum hot water discharge capacity is greatly expanded by individually operating each hot water supply device or simultaneously operating a plurality of hot water supply devices.

【0003】通常の並列型給湯装置においては、給水路
に各給湯器の給水管を、給湯栓を備えた給湯路に各給湯
器の出湯管をそれぞれ並列に接続し、各給湯器の給水管
に水電磁弁を設置し、この水電磁弁をそれぞれ開閉する
ことにより、併設された複数の給湯器の内の何れか1台
の給湯器のみを出湯運転させる、または2台以上の給湯
器を同時に出湯運転させる使用台数切替制御を行ってい
る。
In a normal parallel type hot water supply apparatus, the water supply pipes of the respective water heaters are connected to the water supply passages, and the hot water outlet pipes of the respective water heaters are connected in parallel to the hot water supply passages provided with hot water taps. A water solenoid valve is installed in each of the water solenoid valves, and by opening and closing each of the water solenoid valves, only one water heater of the plurality of water heaters installed side by side is operated for hot water discharge, or two or more water heaters are operated. At the same time, the number of units used is controlled so that the tapping operation is performed.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の並列型給湯装置の運転制御方法においては、運転台
数増数或いは減数の切替操作の際に、急激に通水量が変
化するため、ウォータハンマーが発生するという問題が
あった。
However, in the above-mentioned conventional operation control method for the parallel type water heater, since the water flow rate changes abruptly when the number of operating units is increased or decreased, the water hammer is There was a problem that it occurred.

【0005】本発明の目的は、複数の瞬間式給湯器を並
列に接続した並列型給湯装置の運転台数を増減させて出
湯量を制御する際のウォータハンマーの発生を防止し、
器具の耐久性を向上させた並列型給湯装置の運転制御方
法を提供することである。
An object of the present invention is to prevent the occurrence of a water hammer when controlling the amount of hot water discharged by increasing or decreasing the number of operating parallel water heaters in which a plurality of instantaneous water heaters are connected in parallel,
It is an object of the present invention to provide an operation control method for a parallel type hot water supply device in which the durability of the appliance is improved.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に本発明の並列型給湯装置の運転制御方法は、複数の瞬
間式給湯器を並列に接続して成り、給水源からの水を分
岐して供給し、各給湯器からの湯を合流させて使用でき
る並列型給湯装置において、1台の給湯器を出湯可能状
態におくとともに、他の給湯器を待機状態におき、1台
の給湯器の出湯能力を超えた給湯要求がある場合に、待
機状態の給湯器を出湯運転させる台数切替(増数制御)
を行い、また、複数の給湯器が運転中である時に給湯要
求が減少した場合に、運転中の給湯器を順次停止させる
台数切替(減数制御)を行うものであって、各給湯器の
熱交換器に接続された出湯管に水量調整弁(過流出防止
機能付)と、その下流側に位置する出湯電磁弁とを設
け、運転中の給湯器台数を減じる(減数制御)時には、
給湯を停止する給湯器の水量調整弁を徐々に閉じて全閉
状態または予め定めた規定流量以下の開度として通水量
を緩やかに減少させた後、出湯電磁弁を閉じることによ
り、運転台数を制御する際のウォータハンマーの発生を
防止し、器具の耐久性を向上させる。待機状態の給湯器
においては、出湯電磁弁を全閉、水量調整弁を開とし、
増数制御の出湯開始時には水量調整弁を全閉または規定
流量開度に調整してから出湯電磁弁を開き、その後水量
調整弁を徐々に開くようにする一方、減数制御の出湯停
止時には水量調整弁を全閉または規定流量開度に閉動作
させてから出湯電磁弁を閉じ、その後水量調整弁を開く
ようにすることにより、長時間給湯器を使用しない場合
に水量調整弁を閉じたままにしておくと弁体と弁座との
間に生じる水量調整弁の固着を防止することができる。
各給湯器がバイパス路を備えた混合出湯形式の給湯器で
ある場合に、各バイパス路にバイパス水量調整弁を設
け、増数制御の出湯開始時には水量調整弁と同時に開動
作を行い、減数制御の出湯停止時には水量調整弁と同時
に閉動作を行うものである。
In order to achieve the above object, an operation control method for a parallel type water heater according to the present invention is configured by connecting a plurality of instantaneous water heaters in parallel to branch water from a water supply source. In a parallel type water heater that can be used by merging and supplying hot water from each water heater, leave one water heater ready for tapping and put the other water heater in a standby state When there is a hot water supply request that exceeds the hot water supply capacity of the water heaters, the number of hot water heaters in the standby state is switched to the hot water discharge mode
In addition, when the hot water supply requests decrease while multiple water heaters are in operation, the number of hot water heaters that are in operation is stopped sequentially (reduction control). When the hot water pipe connected to the exchanger is equipped with a water amount regulating valve (with an overflow prevention function) and a hot water outlet solenoid valve located on the downstream side, when reducing the number of hot water heaters in operation (reduction control),
By gradually closing the water volume control valve of the water heater that stops hot water supply to a fully closed state or gradually reducing the water flow rate at an opening below a predetermined specified flow rate, the hot water solenoid valve is closed to reduce the number of operating units. Prevents the generation of water hammer when controlling and improves the durability of the equipment. In the water heater in the standby state, the hot water solenoid valve is fully closed and the water volume adjustment valve is opened.
At the start of tapping water for increasing control, the water volume adjustment valve is fully closed or adjusted to the specified flow rate opening, then the tapping solenoid valve is opened, and then the water volume adjustment valve is gradually opened, while water volume adjustment is made when tapping for reduction control is stopped. Keep the water flow control valve closed when the water heater is not used for a long time by closing the hot water discharge solenoid valve after opening the valve fully or at the specified flow rate opening degree, and then opening the water flow control valve. If this is done, it is possible to prevent the water amount adjusting valve from sticking to the valve body and the valve seat.
When each water heater is a mixed hot water type water heater with a bypass passage, a bypass water amount adjustment valve is provided in each bypass passage, and at the start of the water increase control, the opening operation is performed simultaneously with the water amount adjustment valve, and the reduction control is performed. When the hot water is stopped, the closing operation is performed at the same time as the water amount adjusting valve.

【0007】[0007]

【実施例】本発明の実施例を図に基づいて説明すると、
図1に示す並列型給湯装置は、熱交換器11を備えた即出
湯機能付瞬間式給湯器1と、熱交換器12,13を備え、即
出湯機能を備えていないが出湯能力(号数)が即出湯機
能付給湯器1と等しい2台の瞬間式給湯器2,3とを設
置し、各給湯器1,2,3の熱交換器11, 12,13への入
水管41,42,43を給水路4に接続し、熱交換器11, 12,
13からの出湯管51,52,53を給湯路5に接続しており、
入水管41,42,43と出湯管51,52,53とをそれぞれ連通
させて熱交換器11, 12,13をバイパスするバイパス管
(バイパス路)61,62, 63を各給湯器1,2,3に設け
る。なお、即出湯機能付給湯器1は給湯路5から分岐し
た還流路511 がポンプ512を介して熱交換器11の入口側
に接続されており、温湯を循環させることにより即時出
湯可能とするものである。
Embodiments of the present invention will be described with reference to the drawings.
The parallel type hot water supply device shown in FIG. 1 is provided with an instant hot water supply device 1 with an immediate hot water discharge function equipped with a heat exchanger 11 and heat exchangers 12 and 13 ) Installs two instant water heaters 2, 3 equal to the hot water heater 1 with the immediate hot water discharge function, and the water supply pipes 41, 42 to the heat exchangers 11, 12, 13 of each water heater 1, 2, 3 , 43 is connected to the water supply channel 4, and the heat exchangers 11, 12,
The hot water supply pipes 51, 52, 53 from 13 are connected to the hot water supply passage 5,
Bypass pipes (bypass passages) 61, 62, 63 for bypassing the heat exchangers 11, 12, 13 by respectively connecting the water inlet pipes 41, 42, 43 and the hot water outlet pipes 51, 52, 53 to the water heaters 1, 2, , 3 are provided. In the hot water supply device 1 with the immediate hot water supply function, a reflux passage 511 branched from the hot water supply passage 5 is connected to the inlet side of the heat exchanger 11 via a pump 512, and the hot water can be instantly discharged by circulating hot water. Is.

【0008】また、出湯管51,52,53のバイパス管61,
62, 63との合流部より上流側即ち熱交換器11, 12,13側
に水量調整弁71, 72, 73がそれぞれ設置され、下流側即
ち給湯路5側には出湯電磁弁91,92,93が設けられてお
り、各給湯器1,2,3のバイパス管61,62, 63にはバ
イパス水量調整弁81, 82, 83が設けられており、水量調
整弁71, 72, 73及びバイパス水量調整弁81, 82, 83は全
閉可能となっており、全閉状態をリミッタ(図示せず)
で検出する。なお、本実施例では即出湯機能付給湯器を
1台組み込んでいるが、即出湯機能を備えていない給湯
器のみでも良く、複数の給湯器が即出湯機能を備えるも
のでも良い。
Further, the bypass pipes 61 of the hot water discharge pipes 51, 52, 53,
Water quantity adjusting valves 71, 72, 73 are installed upstream of the confluence with 62, 63, that is, on the side of the heat exchangers 11, 12, 13 respectively, and on the downstream side, that is, on the side of the hot water supply passage 5, there are tapping solenoid valves 91, 92, 93 is provided, and bypass water amount adjusting valves 81, 82, 83 are provided in the bypass pipes 61, 62, 63 of each water heater 1, 2, 3, and the water amount adjusting valves 71, 72, 73 and the bypass are provided. The water flow control valves 81, 82, 83 can be fully closed, and the fully closed state is limited by a limiter (not shown).
Detect with. In this embodiment, one water heater with an immediate hot water function is incorporated, but only a water heater without the immediate hot water function may be used, or a plurality of water heaters may have the immediate hot water function.

【0009】各給湯器1,2,3の熱交換器11, 12,13
の下方に複数の燃焼管から成り、燃焼能力切替可能なバ
ーナ121, 122, 123 が配置され、各バーナ121, 122, 12
3 は燃焼本数を切り替える能力切替弁131, 132, 133 及
び供給ガス圧を制御する比例制御弁141, 142, 143 を備
えたガス供給路151, 152, 153 に接続されている。
Heat exchangers 11, 12, 13 of each water heater 1, 2, 3
The burners 121, 122, and 123, which are composed of a plurality of combustion tubes and whose combustion capacity can be switched, are arranged under each of the burners 121, 122, and 12.
3 is connected to gas supply paths 151, 152, 153 equipped with capacity switching valves 131, 132, 133 for switching the number of combustions and proportional control valves 141, 142, 143 for controlling the supply gas pressure.

【0010】各給湯器1,2,3の入水管41,42,43の
バイパス管61,62, 63分岐部よりも下流側即ち熱交換器
11, 12,13側に缶体通水量QC を検出する缶体通水量セ
ンサ161, 162, 163 及び入水温度TC を検出する入水温
度センサ171, 172, 173 が設置され、バイパス管61,6
2, 63にはバイパス水量QB を検出するバイパス水量セ
ンサ181, 182, 183 が設置されており、出湯管51,52,
53のバイパス管61,62,63との合流部より上流側即ち熱
交換器11, 12,13側に缶体出湯温度TH を検出する缶体
出湯温度センサ191, 192, 193 が、下流側即ち給湯路5
側にバイパス水を混合した後の給湯温度TM を検出する
給湯温度センサ201, 202, 203 が設けられている。ま
た、即出湯機能付給湯器1の還流路511 には、還流温度
F を検出する還流温度センサ513 と、還流水量QF
検出する還流水量センサ514 とが設けられている。
Downstream of the bypass pipes 61, 62, 63 of the water inlet pipes 41, 42, 43 of the water heaters 1, 2, 3, ie, the heat exchanger.
11, the can body through water sensor 161 for detecting the can body through water Q C to 12 side, 162, 163 and the incoming water temperature T incoming water temperature sensor 171 C for detecting, 172, 173 are installed, a bypass pipe 61, 6
At 2, 63, bypass water amount sensors 181, 182, 183 for detecting the bypass water amount Q B are installed.
Upstream or heat exchanger 11 from the merging portion of the bypass pipe 61, 62, 63 53, the can body the hot water temperature sensor 191 for detecting the can body hot water temperature T H to 12 side, 192, 193, downstream That is, hot water supply path 5
Hot water supply temperature sensors 201, 202, 203 for detecting the hot water supply temperature T M after mixing the bypass water are provided on the side. In addition, a reflux temperature sensor 513 that detects the reflux temperature T F and a reflux water amount sensor 514 that detects the reflux water amount Q F are provided in the reflux passage 511 of the water heater 1 with the immediate hot water supply function.

【0011】設定温度TS と各センサで検出された缶体
通水量QC 、バイパス水量QB 、入水温度TC 、缶体出
湯温度TH 、給湯温度TM を入力し、能力切替弁131, 1
32,133 に燃焼能力切替信号を、比例制御弁141, 142, 1
43 に供給ガス圧制御信号を出力して燃焼量を制御する
とともに、水量調整弁71, 72, 73、バイパス水量調整弁
81, 82, 83及び出湯電磁弁91,92,93に制御信号を出力
する機器コントローラ101, 102, 103 が設けられ、各機
器コントローラ101, 102, 103 に接続され、各給湯器
1,2,3の運転停止制御信号を出力するシステムコン
トローラ100 が設けられている。
The set temperature T S and the can body water flow amount Q C , the bypass water amount Q B , the inlet water temperature T C , the can body outlet hot water temperature T H , and the hot water supply temperature T M which are detected by the respective sensors are input, and the capacity switching valve 131 , 1
A combustion capacity switching signal is sent to 32, 133 and proportional control valves 141, 142, 1
The supply gas pressure control signal is output to 43 to control the combustion amount, and the water amount adjustment valves 71, 72, 73 and bypass water amount adjustment valve
81, 82, 83 and hot water solenoid valves 91, 92, 93 are provided with equipment controllers 101, 102, 103 for outputting control signals, respectively connected to the equipment controllers 101, 102, 103, and water heaters 1, 2, A system controller 100 for outputting the operation stop control signal No. 3 is provided.

【0012】なお、給湯温度TM の制御は、基本的にガ
ス量をフィードフォワード制御及びフィードバック制御
(FF+FB制御)により行っているが、缶体通水量Q
C とバイパス水量QB との比である分配比を標準分配比
(例えば、1対1)とした時に熱交換器側の設定温度が
所定温度(例えば、80℃)を超えた場合にはバイパス水
量調整弁81, 82, 83を制御して(バイパス水量QB を増
大させる)分配比を変更する。
The hot water supply temperature T M is basically controlled by feedforward control and feedback control (FF + FB control) of the gas amount.
When the distribution ratio, which is the ratio of C to the amount of bypass water Q B , is set to the standard distribution ratio (for example, 1: 1), the bypass temperature is exceeded when the set temperature on the heat exchanger side exceeds the predetermined temperature (for example, 80 ° C). water control valve 81, 82, 83 by controlling the (increasing the bypass water Q B) to change the distribution ratio.

【0013】給湯を開始していない即ち給湯栓が閉じら
れている場合には、1台の給湯器のみ出湯可能状態にあ
り、例えば即出湯機能付給湯器1のみの出湯電磁弁91及
びバイパス水量調整弁81が開かれ、水量調整弁71は閉じ
られて出湯可能状態となり、他の給湯器2,3は、出湯
電磁弁92, 93が閉じられ、水量調整弁72, 73及びバイパ
ス水量調整弁82, 83は全開とされて停止時における待機
状態となる。待機状態において、水量調整弁及びバイパ
ス水量調整弁を全開とすることにより、長時間待機状態
にある場合にも水量調整弁及びバイパス水量調整弁の弁
体と弁座とが固着する恐れを解消することができる。給
湯要求量が増大して待機状態の給湯器2,3の機器コン
トローラ102, 103に出湯運転開始指令(台数切替指令)
がシステムコントローラ100 から出力されると、それぞ
れの水量調整弁72, 73及びバイパス水量調整弁82, 83を
一旦全閉状態にしてから出湯電磁弁92, 93を開き、その
後徐々に水量調整弁72, 73及びバイパス水量調整弁82,
83を開くことにより、通水量を徐々に増大させてウォー
タハンマーの発生を防止することができる。次に、複数
の給湯器(例えば、給湯器1,2,3全て)が運転され
ている状態で給湯要求量が減少すると、システムコント
ローラ100 から所定の給湯器(例えば、給湯器3)の機
器コントローラ103 に出湯運転停止命令(台数切替指
令)が出力されると、停止される給湯器(給湯器3)の
水量調整弁(水量調整弁73)及びバイパス水量調整弁
(バイパス水量調整弁83)の開度を減じて、徐々に全閉
または予め定められた規定流量以下の開度に調整して緩
やかに通水量を減少させた後、停止される給湯器(給湯
器3)の出湯電磁弁93を全閉とすることにより、通水量
を徐々に変化させてウォータハンマーの発生を防止する
ことができる。
When hot water supply is not started, that is, when the hot water tap is closed, only one hot water supply device is ready for hot water discharge, and for example, the hot water discharge solenoid valve 91 and bypass water amount of only the hot water supply device 1 with immediate hot water supply function. The adjusting valve 81 is opened, the water amount adjusting valve 71 is closed and the hot water is ready to be discharged, and in the other water heaters 2 and 3, the hot water solenoid valves 92 and 93 are closed, and the water amount adjusting valves 72 and 73 and the bypass water amount adjusting valve are provided. 82 and 83 are fully opened and are in a standby state when stopped. By fully opening the water volume adjustment valve and the bypass water volume adjustment valve in the standby state, it is possible to eliminate the risk of the valve body and valve seat of the water volume adjustment valve and the bypass water volume adjustment valve sticking to each other even when in the standby state for a long time. be able to. Hot water supply demand increases, and hot water supply operation start command (unit number switching command) is given to the device controllers 102 and 103 of the water heaters 2 and 3 in the standby state.
Is output from the system controller 100, the water amount adjusting valves 72, 73 and the bypass water amount adjusting valves 82, 83 are once fully closed, and the tap water solenoid valves 92, 93 are opened. , 73 and bypass water flow control valve 82,
By opening 83, it is possible to gradually increase the water flow amount and prevent the occurrence of water hammer. Next, when the hot water demand decreases while a plurality of water heaters (for example, all of the water heaters 1, 2, and 3) are operating, the system controller 100 causes a device of a predetermined water heater (for example, the water heater 3) to operate. When a hot water discharge operation stop command (unit number switching command) is output to the controller 103, the water amount adjustment valve (water amount adjustment valve 73) and bypass water amount adjustment valve (bypass water amount adjustment valve 83) of the water heater (water heater 3) that is stopped Solenoid valve of hot water supply device (hot water supply device 3) that is stopped after gradually reducing the opening amount of the water heater to gradually fully close it or adjust the opening amount to a predetermined flow rate or less to gradually reduce the water flow amount. By fully closing 93, it is possible to gradually change the amount of water flow and prevent the occurrence of water hammer.

【0014】次に図2のフローチャートを参照して運転
制御動作について述べると、給湯開始時に、即出湯機能
付給湯器1のみが出湯可能状態(他の給湯器2,3は待
機状態)にあると出湯電磁弁91及びバイパス水量調整弁
81が開かれ、水量調整弁71は閉じられており、必要最小
通水量を確認する(MOQ ON)と出湯運転が開始さ
れ、要求号数(給湯要求量)Gが即出湯機能付給湯器1
の号数(出湯能力)A未満の場合には即出湯機能付給湯
器1のみが出湯運転を継続する。
Next, the operation control operation will be described with reference to the flow chart of FIG. 2. At the start of hot water supply, only the hot water supply device 1 with the immediate hot water supply function is in the hot water supplyable state (the other hot water supply devices 2 and 3 are in the standby state). Solenoid valve 91 and bypass water amount control valve
When 81 is opened and the water amount adjusting valve 71 is closed, the required hot water flow is confirmed (MOQ ON), hot water discharge operation is started, and the requested number (hot water supply request amount) G is the hot water supply device 1 with immediate hot water discharge function.
If the number is less than A (capacity of hot water) A, only the hot water supply device 1 with the immediate hot water function continues the hot water discharge operation.

【0015】要求号数(即ち給湯要求量)Gが即出湯機
能付給湯器1の号数(出湯能力)A以上になると、台数
切替指令が出力され、待機状態にある給湯器2(出湯電
磁弁92は閉)の水量調整弁72及びバイパス水量調整弁82
を一旦全閉状態にし、その後出湯電磁弁92を開き、次に
水量調整弁72及びバイパス水量調整弁82を徐々に開くこ
とにより、通水量を徐々に増大させてウォータハンマー
の発生を防止しながら出湯運転を開始し、要求号数Gが
即出湯機能付給湯器1と給湯器2の号数の和B未満の時
は即出湯機能付給湯器1と給湯器2の2台が出湯運転を
継続し、給湯器3は待機状態にある。
When the required number G (namely, the hot water supply demand amount) G becomes equal to or larger than the number (hot water supply capacity) A of the hot water supply device 1 with the immediate hot water supply function, a unit number switching command is output, and the hot water supply device 2 in the standby state (the hot water electromagnetic (The valve 92 is closed) The water amount adjustment valve 72 and the bypass water amount adjustment valve 82
Is fully closed, then the hot water solenoid valve 92 is opened, and then the water amount adjusting valve 72 and the bypass water amount adjusting valve 82 are gradually opened to gradually increase the water flow amount while preventing the occurrence of water hammer. When the hot water supply operation is started and the requested number G is less than the sum B of the numbers of the hot water supply device 1 and the water heater 2 with the immediate hot water function, the two hot water supply devices 1 and 2 with the immediate hot water function perform the hot water operation. Continuing, the water heater 3 is in a standby state.

【0016】要求号数Gが即出湯機能付給湯器1と給湯
器2の号数の和B以上になると、待機状態にある給湯器
3(出湯電磁弁93は閉)の水量調整弁73及びバイパス水
量調整弁83を一旦全閉状態にし、その後出湯電磁弁93を
開き、次に水量調整弁73及びバイパス水量調整弁83を徐
々に開くことにより、通水量を徐々に増大させてウォー
タハンマーの発生を防止しながら出湯運転を開始し、全
給湯器1,2,3の出湯運転を行う。
When the requested number G exceeds the sum B of the numbers of the water heaters 1 and 2 with the immediate hot water discharge function, the water amount adjusting valve 73 of the water heater 3 in the standby state (the hot water solenoid valve 93 is closed) and Once the bypass water amount adjusting valve 83 is fully closed, then the hot water discharge solenoid valve 93 is opened, and then the water amount adjusting valve 73 and the bypass water amount adjusting valve 83 are gradually opened to gradually increase the water passage amount and to The hot water discharge operation is started while the generation is prevented, and the hot water discharge operations of all the water heaters 1, 2, and 3 are performed.

【0017】また、給湯器の総運転時間の偏重を防ぐた
めに、給湯停止時に出湯可能状態にある1台の給湯器を
所定時間(例えば、24時間)毎に順次変更することが行
われている(24時間ローテーション)が、即出湯機能付
給湯器を用いた場合には、即出湯運転を行う時には即出
湯機能付給湯器が出湯運転するから、即出湯機能付給湯
器を出湯可能状態にする時間を他の給湯器に比べて即出
湯運転時間に見合う時間だけ短くしてローテーションを
行うことにより、即出湯機能付給湯器と他の給湯器の総
運転時間を均等化することができる。
Further, in order to prevent the total operating time of the hot water heater from being unbalanced, one hot water heater that is ready to discharge hot water when the hot water supply is stopped is sequentially changed every predetermined time (for example, 24 hours). (24 hour rotation), when using the water heater with immediate hot water function, the hot water heater with immediate hot water function will perform hot water discharge operation when performing immediate hot water operation, so the water heater with immediate hot water function will be ready for hot water By performing the rotation while shortening the time as compared with other water heaters by the time corresponding to the immediate hot water operation time, it is possible to equalize the total operating time of the water heater with an immediate hot water function and other water heaters.

【0018】続いて、2台以上の給湯器が運転中である
状態から給湯要求量の減少に応じて順次給湯器を停止さ
せる減数制御について述べると、全給湯器1,2,3が
出湯運転している時に、要求号数Gが即出湯機能付給湯
器1と給湯器2の号数の和B未満(G<B)に低下する
と、給湯器3の水量調整弁73及びバイパス水量調整弁83
を緩やかに閉方向に駆動し、全閉状態または予め定めら
れた規定流量の開度状態にして、その後出湯電磁弁93を
閉じて2台の給湯器1,2の出湯運転に移行することに
より、通水量を徐々に減少させる。
Next, a description will be given of reduction control in which two or more water heaters are in operation and the hot water heaters are sequentially stopped in accordance with a decrease in the hot water supply demand. When the requested number G falls below the sum B of the numbers of the hot water heater 1 and the water heater 2 with the immediate hot water supply function (G <B), the water amount adjusting valve 73 and the bypass water amount adjusting valve of the water heater 3 83
Is slowly driven in the closing direction to bring it into a fully closed state or an opening state of a predetermined regulated flow rate, and then the hot water discharge solenoid valve 93 is closed to shift to the hot water discharge operation of the two water heaters 1 and 2. , Gradually reduce water flow.

【0019】さらに、給湯器1,2の出湯運転中に給湯
要求量が減少して要求号数Gが即出湯機能付給湯器1の
号数A未満(G<A)に低下すると、給湯器2の水量調
整弁72及びバイパス水量調整弁82を緩やかに閉方向に駆
動し、全閉状態または予め定められた規定流量の開度状
態にして、その後出湯電磁弁92を閉じて給湯器1のみの
出湯運転に移行することにより、通水量を徐々に減少さ
せる。
Further, when the required hot water supply amount decreases during the hot water supply operation of the hot water heaters 1 and 2, and the requested number G falls below the number A of the hot water heater 1 with an immediate hot water function (G <A), the water heaters The water amount adjusting valve 72 and the bypass water amount adjusting valve 82 of No. 2 are gently driven in the closing direction to bring them into a fully closed state or an opening state of a predetermined regulated flow rate, and then the hot water discharge solenoid valve 92 is closed to only the water heater 1. By shifting to the hot water discharge operation, the water flow rate is gradually reduced.

【0020】上述のとおり、減数制御においては通水量
を緩やかに減少させ、増数制御においては通水量を緩や
かに増大させているから、急激な通水量の変動を生じる
ことがなく、ウォーターハンマーの発生を確実に防止す
ることができ、給湯器並びに配管等の耐久性を向上させ
ることができる。
As described above, since the water flow rate is gently decreased in the reduction control and the water flow rate is gradually increased in the increase control, the water flow rate of the water hammer does not change suddenly. It can be reliably prevented from occurring, and the durability of the water heater, piping, etc. can be improved.

【0021】なお、上記実施例においては、待機状態に
おいては水量調整弁及びバイパス水量調整弁を全開、出
湯電磁弁を閉としているが、待機状態において水量調整
弁及びバイパス水量調整弁並びに出湯電磁弁を閉として
いても良いものである。
In the above embodiment, the water amount adjusting valve and the bypass water amount adjusting valve are fully opened and the hot water discharge solenoid valve is closed in the standby state, but the water amount adjusting valve, the bypass water amount adjusting valve and the hot water discharge solenoid valve are in the standby state. It is okay to close.

【0022】また、上記実施例においては、バイパス路
(バイパス管)を備えた混合出湯形式の給湯器について
のみ述べてきたが、バイパス路を備えていない給湯器を
用いても良いものであり、その場合は出湯電磁弁の上流
側に水量調整弁が設けられ、増数制御時に一旦水量調整
弁を全閉として出湯電磁弁を全開とした後、水量調整弁
を徐々に開いて通水量を緩やかに増大させ、減数制御時
に水量調整弁の開度を全閉または規定流量以下の開度に
まで徐々に変化させた後、出湯電磁弁を全閉として通水
量を緩やかに減少させることによって通水量の変動を緩
やかにするものである。
Further, in the above embodiment, only the mixed hot water supply type water heater having the bypass passage (bypass pipe) has been described, but a water heater having no bypass passage may be used. In that case, a water amount adjusting valve is provided on the upstream side of the hot water discharge solenoid valve, and once the water amount adjusting valve is fully closed and the hot water discharge solenoid valve is fully opened during the increase control, the water amount adjusting valve is gradually opened to gradually increase the water flow rate. The flow rate of the water flow rate adjustment valve during full reduction, or gradually changing the water flow rate control valve to fully closed or to a level below the specified flow rate, and then gradually closing the hot water solenoid valve to gradually reduce the water flow rate. To moderate the fluctuations of.

【0023】[0023]

【発明の効果】本発明は、上述のとおり構成されている
から、待機状態にある(出湯電磁弁は閉)給湯器が出湯
運転を開始する際に、水量調整弁または水量調整弁とバ
イパス水量調整弁を閉じた状態から出湯電磁弁を開き、
続いて水量調整弁及びバイパス水量調整弁を徐々に開
き、通水量を徐々に増加させることになり、また出湯運
転中の給湯器が停止する場合に、水量調整弁または水量
調整弁とバイパス水量調整弁を閉じてから出湯電磁弁を
閉じて通水量を徐々に減少させることになり、ウォータ
ハンマーの発生を防止し、給湯器並びに配管等の耐久性
を向上させる。
Since the present invention is configured as described above, when the water heater in the standby state (the hot water discharge solenoid valve is closed) starts the hot water discharge operation, the water quantity adjusting valve or the water quantity adjusting valve and the bypass water quantity. Open the hot water solenoid valve with the adjustment valve closed,
Next, gradually open the water volume adjustment valve and the bypass water volume adjustment valve to gradually increase the water flow rate.In addition, if the water heater stops during hot water operation, the water volume adjustment valve or the water volume adjustment valve and the bypass water volume adjustment valve After the valve is closed, the hot water solenoid valve is closed to gradually reduce the water flow amount, prevent the occurrence of water hammer, and improve the durability of the water heater and piping.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明を適用する給湯器の概略構成図であ
る。
FIG. 1 is a schematic configuration diagram of a water heater to which the present invention is applied.

【図2】 本発明に基づく制御動作を示すフローチャー
トである。
FIG. 2 is a flowchart showing a control operation according to the present invention.

【符号の説明】[Explanation of symbols]

1 即出湯機能付給湯器 2,3 即出湯機能を有していない給湯器 4 給水路 5 給湯路 41, 42, 43 入水管 51, 52, 53 出湯管 61, 62, 63 バイパス管 71, 72, 73 (過流出防止機能付)水量調整弁 81, 82, 83 バイパス水量調整弁 91, 92, 93 出湯電磁弁 100 システムコントローラ 101, 102, 103 機器コントローラ 1 Hot water heater with immediate hot water function 2, 3 Hot water heater without immediate hot water function 4 Water supply channel 5 Hot water supply channel 41, 42, 43 Water inlet pipe 51, 52, 53 Hot water outlet pipe 61, 62, 63 Bypass pipe 71, 72 , 73 (with overflow prevention function) Water flow control valve 81, 82, 83 Bypass water flow control valve 91, 92, 93 Hot water solenoid valve 100 System controller 101, 102, 103 Equipment controller

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 複数の瞬間式給湯器を並列に接続して成
る並列型給湯装置において、出湯運転台数を切り替えて
給湯能力を変更する運転制御方法であって、各給湯器の
出湯路に出湯電磁弁と、その上流側に過流出防止機能付
水量調整弁とを設け、出湯運転を停止する際には過流出
防止機能付水量調整弁を全閉または規定流量以下の開度
とした後出湯電磁弁を閉じることを特徴とする並列型給
湯装置の運転制御方法。
1. A parallel-type hot water supply device comprising a plurality of instantaneous hot water heaters connected in parallel, which is an operation control method for changing the hot water supply capacity by changing the number of hot water discharge operations, and the hot water is discharged to the hot water supply passage of each water heater. Provide a solenoid valve and a water flow control valve with overflow prevention function upstream of the solenoid valve, and when stopping the hot water discharge operation, fully close the water flow control valve with overflow prevention function or set the opening below the specified flow rate before tapping hot water. A method for controlling operation of a parallel type hot water supply device, characterized in that a solenoid valve is closed.
【請求項2】 待機状態においては出湯電磁弁は閉、過
流出防止機能付水量調整弁は開とし、出湯運転を開始す
る際には過流出防止機能付水量調整弁を全閉または規定
流量以下の開度としてから出湯電磁弁を開き、その後過
流出防止機能付水量調整弁を徐々に開くことを特徴とす
る請求項1記載の並列型給湯装置の運転制御方法。
2. In the standby state, the hot water discharge solenoid valve is closed and the water flow control valve with overflow prevention function is opened. When the hot water discharge operation is started, the water flow control valve with overflow prevention function is fully closed or below the specified flow rate. 2. The operation control method for a parallel hot water supply apparatus according to claim 1, wherein the hot water discharge solenoid valve is opened after the opening degree of, and then the water flow rate adjusting valve with overflow prevention function is gradually opened.
【請求項3】 バイパス路を備えた混合出湯式給湯器を
並列に接続して成る並列型給湯装置において、各給湯器
のバイパス路にバイパス水量調整弁を設け、バイパス水
量調整弁を過流出防止機能付水量調整弁と同調して開閉
動作させることを特徴とする請求項1又は2に記載され
た並列型給湯装置の運転制御方法。
3. In a parallel type hot water supply device comprising a mixed hot water supply type water heater having a bypass passage connected in parallel, a bypass water amount adjusting valve is provided in the bypass passage of each water heater, and the bypass water amount adjusting valve prevents excessive outflow. The operation control method for a parallel water heater according to claim 1 or 2, wherein the opening / closing operation is performed in synchronism with the functioning water quantity adjusting valve.
JP4298142A 1992-10-12 1992-10-12 Multiple water heater control method Expired - Fee Related JP2586782B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4298142A JP2586782B2 (en) 1992-10-12 1992-10-12 Multiple water heater control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4298142A JP2586782B2 (en) 1992-10-12 1992-10-12 Multiple water heater control method

Publications (2)

Publication Number Publication Date
JPH06123487A true JPH06123487A (en) 1994-05-06
JP2586782B2 JP2586782B2 (en) 1997-03-05

Family

ID=17855741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4298142A Expired - Fee Related JP2586782B2 (en) 1992-10-12 1992-10-12 Multiple water heater control method

Country Status (1)

Country Link
JP (1) JP2586782B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247933A (en) * 2006-03-14 2007-09-27 Paloma Ind Ltd Water heater

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62134275A (en) * 1985-12-09 1987-06-17 Canon Inc Recording apparatus
JPH01118075A (en) * 1987-10-30 1989-05-10 Noritz Corp Hot water supplying equipment operating plural apparatus in parallel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62134275A (en) * 1985-12-09 1987-06-17 Canon Inc Recording apparatus
JPH01118075A (en) * 1987-10-30 1989-05-10 Noritz Corp Hot water supplying equipment operating plural apparatus in parallel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007247933A (en) * 2006-03-14 2007-09-27 Paloma Ind Ltd Water heater

Also Published As

Publication number Publication date
JP2586782B2 (en) 1997-03-05

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