546458 玖、發明說明 (發明說明應敘明：發明所屬之技術領域、先前技術、内容、實施方式及圊式簡單說明） 【明所屬技領域】 發明領域 本發明係關於一種熱水供給裝置，其係並列設置多數 5 熱水供給器而形成者。 I：先前技術3 發明背景 必須將熱水供給器當作飯店及綜合醫院等多處供給 熱水之設備時，熱水供給器之熱水供給能力將假設為所有 ίο 熱水供給處可同時使用。此時，亦可重新設計製作大型熱 水供給器，但無法適用於最小加熱量中不使熱交換器過熱 之最低動作水量變大，且熱水供給量較少之狀態下。因此 ，建議構造成並列設置幾台廣泛使用之小型熱水供給器當 作熱水供給裝置。 15 該熱水供給裝置中，於各熱水供給器之熱交換器上 ，分別連接有由與水源連接之供水原管分支之用以供給自 來水之供水管、將已加熱之熱水引導至預期之熱水供給處 之合流熱水出水管之熱水出水管。在此，對熱水供給處之 熱水供給量較少時，使構成熱水供給裝置之所有熱水供給 20 器動作並不符合經濟效益，同時對構成熱水供給裝置之所 有熱水供給器進行動作時必須加總所有熱水供給器之最低 動作水量，且無法進行少量之熱水供給，因此該熱水供給 裝置係可適當增減依對各熱水供給處之熱水供給量而使用 5 546458 玫、發明說明 之熱水供給器之數量。 即’習知之熱水供給裝置中，於供水原管上設有流量 傳感杰’除位於該供水原管最上游側之熱水供給器外，於 各熱水供給器之供水管上設有供水電磁開關闕。然後，藉 5流量傳感器檢測依對各熱水供給處之熱水供給量增減而變 動之供水原管内之水量，且依該檢測結果而將各熱水供給 益之供水電磁安全閥加以_，而增減使用之熱水供給器（ 例如，參照曰本公開公報特公平第號）。 Γ ^明内容】 10 發明欲解決之課題 然而，上述裝置中供水電磁開關閥用之電源必須另 °又’且必須具有用於控制供水電磁開關閥之開關之流量傳 感器等檢測機構及其控制程式等，因此有導致熱水供給裝 置之成本提高之問題。又，進行熱水供給裝置之設置作業 b時，對供水電磁開關閥之佈線作業等需另外進行，因此其 設置作業亦變得麻煩。 在此本發明有鐘於上述問題而提供一種熱水供給裝 置，錢用於有效增減依熱水供給量而使用之熱水供給器 數里1¾不導致成本提局且不需個別檢測機構及控制程 20 式，且可較容易進行設置作業者。 用以解決課題之手段 為解決該問題，本發明之熱水供給裝置係並列設置 具有熱交換器之至少兩個熱水供給器，且於各熱水供給器 6 546458 玖、發明說明 之熱交換器上，分別連接有由與水源連接之供水原管分支 之用以供給自來水之供水管、將已加熱之熱水引導至預期 之供給熱水處之合流熱水出水管之熱水出水管者； 且，將壓力開關閥插設於至少一台熱水供給器之供 X苢而其中5亥壓力開關閥，係於供水原管内之水壓、以 及依對各熱水供給處之供給量進行增減之合流熱水出水管 内之水壓間產生預定壓力差時將打開者。 依本發明，藉構成熱水供給裝置之任一熱水供給器 由進行朝熱水供給處供給熱水之狀態，將水龍頭打開使 1〇熱水供給量增加時，合流熱水出水管内之水壓降低，且於 該降低之水壓、以及於壓力開關閥上由上游侧產生作用之 供水原官内之水壓間產生預定壓力差時，壓力開關闕打開 。當《力開_打開時’自來水流通於其他熱水供給器 内部之水道而該熱水供給器形成熱水供給狀態，且可增加 15對熱水供給處之熱水供給量。 另一方面，構成熱水供給裝置之各熱水供給器處於 熱水供給狀態下，於熱水供給處依序將水龍頭關閉時，由 於合流熱水出水管内之水量變少，而合流熱水出水管内之 水壓上升，且於該上升之水壓、以及於壓力開關闕上由上 20游側產生作用之供水原管内之水壓間產生預定塵力差時， 壓力開關閥打開，而停止其熱水供給器之熱水供給。因此 ’可依有效地增減依熱水供給量而使用之熱水供給器。 在此，該壓力開關閥係設有具上游通路及下游通路 7 546458 玖、發明說明 之閥本體，並藉以具有一旦發生前述壓力差，則可容許由 形成於上游通路端部之閥座朝脫離方向移動之偏壓力之偏 壓機構付與偏壓，以使該閥座就位之隔板將前述上游通路 與下游通路隔開者。 5 將2個以上之壓力開關閥插設於各熱水供給器之供 水管時，為適當地增減依對熱水供給處之熱水供給量而使 用之熱水供給器之數量，係必須使壓力開關閥之開閥時期 相異。此時5該偏壓機構係備有用以調自卩偏壓力之偏壓力 調節機構，且將2個以上之壓力開關閥插設於各熱水供給 10 器之供水管時，若使各壓力開關閥之偏壓力相異，則壓力 開關閥可依序打開。 又，例如藉定期換入各壓力開關閥之彈簧偏壓力之設 定，而可改變依對熱水供給處之熱水供給量而依序開閥之 壓力開關閥，因此可進行各熱水供給器輪流運轉所致之各 15 熱水供給器之壽命均等化。此時，有利於在構成熱水供給 裝置之所有熱水供給器之供水管上插設壓力開關閥。 【實施方式3 較佳實施例之詳細說明 參照第1圖，所示之1係顯示飯店及綜合醫院等多 20 處内進行適當熱水供給所需之設備用熱水供給裝置，且該 熱水供給裝置1係並列設置具有如20號之最大熱水供給 能力之3台廣泛使用之熱水供給器10a、10b、10c而構成 8 546458 玖、發明說明 第1、第2及第3之各熱水供給器i〇a、i〇b、1〇c , 係將當作加熱裝置之燃燒爐部u、配置於該燃燒器爐n 上方之熱父換器12、位於該燃燒爐部u下方並將燃燒空 氣供給入燃燒爐部；Π之燃燒風扇13，組裝於箱狀之框體 5 14上而構成者。 於各熱水供給器10a、10b、i〇c之熱交換器12上， 連接有用以供給由與水源（圖中未示）連接之供水原管2分 支之自來水之第1、第2及第3供水管15a、15b、15c、 將已加熱之熱水引導至預期之熱水供給處3之合流熱水出 水吕4之第1、第2及第3熱水出水管16a、16b、16c。 又，於各供水管l5a、15b、15c上設有流量傳感器17，且 於各”、、水出水管16a、16b、16c上設有熱水出水溫度傳感 器18。 燃燒爐部11,係將上面列設有多數火焰口之多數本 15生式燃燒爐收納至燃燒爐箱體而構成者。與瓦斯源相連接 之燃料瓦斯供給管5係透過瓦斯閥50及比例控制閥51， 與"亥燃燒爐部11相連接。燃燒爐部11之動作，係被各熱 水供給态l〇a、1〇b、1〇c上分別設之控制機構（圖中未示） 所控制。控制機構，係藉於熱水供給處3打開水龍頭供給 …、X而由供水管15a、15b、15c經過熱交換器12使自 來X/爪通於與熱水出水管16a、16b、16。相通之熱水供給 器内部之水道，且當流量傳感器17檢測出其水量達到預 定值時，進行燃燒爐部u之點火操作，因此熱水供給器 9 546458 玖、發明說明 10a、10b、10c形成熱水供給狀態。然後，由熱水出水溫 度傳感器18接受信號，並控制比例控制閥51，且調整對 燃燒爐部11之燃料瓦斯供給量，以將熱水溫度控制成設 定溫度。且，供給燃燒瓦斯後開始燃燒爐部u之燃燒之 5各熱水供給器l〇a、l〇b、l〇c之最低動作水量，係被設定 在 2.7L/min 〇 在此，如上述構造成熱水供給裝置1時，必須增減 依各熱水供給處3上之熱水供給量而使用之熱水供給器 l〇a、l〇b、10c之數量。本實施態樣，係將於供水原管2 10内之水壓、以及與依各熱水供給處3上之熱水供給量進行 立曰減之合流熱水出水管4相連接之熱水供給器内部之水壓 間產生預疋壓力差時打開之相同構造之第丨及第2壓力開 關闕6b、6c，插設於第2及第3之供水管15b、…上。 參照第2圖，於壓力開關閥6b、6c之閥本體6〇上 15 ’開設具有分別可與各供水管15b、15。相連結之管連接 口 62a之上游通路61及下游通路62。上游通路61 ’係約略形成L狀且於其終端部±形成㈣座㈣。該上 游通路61及下游通路62，係由使該閥座61b就位而配設 隔板63所隔開。隔板63，係藉具有一旦發生前述壓力 差則可各許由閥座61b朝脫離方向移動之偏壓力之彈簧 64付與朝閥座61b方向之偏壓。 彈簧64係在與閥座61b相對並形成於閥本體6〇上 之彈菁收納部65内，壓縮設置於透過片材66a而插設之 10 546458 玖、發明說明 作為调整機構之調整桿66之端面與隔板63間。又，於下 游通路62上設有文丘里部67。該文丘里部67為控制隔 板63之移動，而透過旁通路68與彈簧收納部μ相連通 〇 5 後，上游通路61及下游通路62間之壓力差到達 預定值且右對抗彈餐64而該隔板63由闕座仙猶稍遠 離，則與上游通路61及下游通路62相連通。此時，由於 壓力開關閥6藉文丘里部67上之文丘里效果而產生之負 壓力，透過旁通路68傳達至彈簧收納室65，而隨隔板Μ 10之上游側產生作用之自來水水壓而瞬間全開。 在此，依熱水供給處3上之熱水供給量依序令熱水 供給器10b及10c為熱水供給狀態時，必須令各壓力開關 閥6開閥之時期相異。本實施例之形態，係為使彈菁料 壓縮設置時之彈簧壓縮率產生變化而彈簧之偏壓力可階段 15性地進行調整，而於調整桿66之3處上形成凹部諭， 同時於彈簧收納部65之外壁上配置有與調整桿66相對並 卡止於垂直方向之止動器69。然後，使止動部69與凹部 66b之任-卡合’且藉調整對收納部65内之調整桿μ之 插入量，而可3階段地設定彈簧64之偏壓力。 2〇 於只有第1熱水供給器咖之熱水供給狀態中，例 如將第2壓力開_ 6b打開時，由於從供水原管2只朝 第1供水管15a流動之自來水分支成第2熱水供給器_ ，而第1供水管15a内之水壓呈過渡性地下降。另一方面 11 546458 玖、發明說明 ，當熱水經過第2熱水出水管16b於合流熱水出水管4合 流時’該合流之熱水過渡性地形成自帛i熱水出水管他 之熱水阻力，以使熱水供給器10a内部之水道内之流量降 低。因此’ f 1供水管15aM之水量變成最低動作水量以 5下’隸制機構停止燃燒爐冑U之動作以使帛1熱水供 給器10a之熱水供給停止。 藉此，決定壓力開關閥6b之開闕時期時，壓力開關 間6b打開時為不使第i供水管15a内之水量成為最低動 作水量，即趁由第2熱水出水管16b朝合流熱水出水管* 10合流之熱水較少而打開壓力開關閥6b，因此必須設定彈 簧64之偏壓力及調整桿66之凹部6补之形成位置。本實 施態樣’係上述壓力差於調整桿66之返回位置（第2圖中 最右侧之凹部）上形成20KPa、於其中間位置上形成 25KPa、於其押人位置上形成胤pa時，為使隔板^由 15閥座62b遠離而打開，而設定彈簧64之偏壓力及調整桿 66之凹部66b之形成位置。 接著，說明本實施態樣之熱水供給裝置丨之動作。 在此，將第1壓力開關閥6b之調整桿66設定於中間位置 ，然後將第2壓力開關閥6c設定在押入位置。 20 於熱水供給處3打開水龍頭時，首先自來水流通於 第1熱水供給管15a。當流量傳感器17檢測出該自來水之 水量達到最低動作水量（2.7/min)時，控制機構將瓦斯閥5〇 打開而開始燃料瓦斯之供給，同時進行點火動作以使燃燒 12 546458 玖、發明說明 爐部π動作’且第丨熱水供給器10a形成熱水供給狀態 。此時’於第1及第2兩壓力開關閥6b、6c之上游通路 61上’與第1熱水供給管15a内相同之水壓產生作用。 接著，若於多數之熱水供給處3打開水龍頭以使熱 5水供給量增加，則合流熱水出水管4内之水壓降低。此時 ’第2及第3之兩熱水供給器1 〇b、1 〇c内部之水壓降低 。因此’壓力開關閥6b、6c之下游通路62及彈簧室65 内之水壓降低。然後，若彈簧室65内之水壓 '以及上游 通路61上所產生作用之水壓間產生預定壓力差達到， 10則第2供水管15b之壓力開關閥將對抗彈簧64之偏壓力 而打開。此時，壓力開關閥6b藉文丘里部67上之文丘里 效果而產生之負壓力，係透過旁通路傳達至彈簧收納室 65 ,而隨隔板63之上游側產生作用之自來水水壓瞬間全 開。然後’自來水流通於熱水供給器1 〇b内，且其水量超 15過最低動作水量時，則如上述般燃燒爐部11進行動作而 熱水供給器1 Ob形成熱水供給狀態，且熱水供給裝置1係 形成兩台熱水器10a、10b之熱水供給運轉狀態。 接著，更於多數之熱水供給處3將水龍頭打開以使 熱水供給量增加，且第3熱水供給器10c内之水壓降低， 20且於壓力開關閥6c之彈簧室65内之壓力、以及上游通路 上產生作用之水壓間之壓力差到達3〇KPa時，則如上述般 第3供水管15c之壓力開關閥6c對抗彈簧料之偏壓力而 打開。然後，來水於熱水供給器l〇c内流通，且其水量超 13 546458 玖、發明說明 匕最低動作水量時，如上述般燃燒爐部11進行動作而熱 水供給器l〇c形成熱水供給狀態。其結果，熱水供給裝置 1係形成3台熱水供給器10a、10b、l〇e之熱水供給運轉 狀態。 5 在此’將各熱水供給裝置1之供水管15a、15b、15c 中之自來水水壓與流量之關係顯示於第3圖。實線τ係顯 不合流熱水出水管4内之水量，而實線#1、#2、#3係分 別顯示相對於水壓之各熱水供給器1〇a、1〇b、1〇c之供水 笞15内之水量。因此，當依熱水供給量之增加而增加之 10上游通路61内之水壓、以及下游通路62内之水壓間之壓 力差變成25KPa,則第1壓力開關閥6b對抗彈簧64之力 而打開。此時，第1熱水供給器l〇a之供水管15a内之水 壓過渡性地降低，且由於熱水自第2熱水供給器10b朝合 流熱水出水管4合流，而使其水量降低，但不會降低至第 15 1熱水供給器10a之燃燒爐部11熄火之水量（2.7L/min)。 然後’第1及第2供水管15a、15b内之水壓逐漸相等。 接著，更使熱水供給量增加且壓力差為約30KPa左 右時’第2壓力開關閥6c將打開。此時，供水管15a及 15b内之水壓係過渡性地降低，且由於熱水自第3熱水供 20 給器l〇c合流至合流熱水出水管4，而第1及第2供水管 15a、15b内之水量降低，但不會降低至第i及第2兩熱水 供給器l〇a、l〇b熄火之水量（2.7/min以下）。 最後，若於熱水供給處3將水龍頭依序關閉，則隨 14 546458 玖、發明說明 合流熱水出水管4内之水量減少以致水壓升高，而熱水供 給器l〇b、10c内部之水壓上升。然後，當上述壓力差為 30KPa以下時，隔板63藉彈簧64之偏壓力朝閥座方向 62b移動，且壓力開關閥6c打開。此時，第3熱水供給器 5 1以形成非通水狀態，且燃燒爐部11熄火而形成熱水供給 停止狀態，而熱水供給裝置工係回到兩台熱水供給器10a 、10b之熱水供給運轉狀態。 接著，更於熱水供給處3將水龍頭加以關閉時，當 熱水供給器10b内部之水道之水壓上升，而上述壓力差成 10為25Kpa以下時，當隔板63藉彈簧64之偏壓力朝閥座方 向62b移動，則壓力開關閥6b打開。此時，第2熱水供 給器l〇b形成非通水狀態，且燃燒爐部u熄火而形成熱 水供給停止狀態。其結果，熱水供給裝置丨係回到第丨熱 水供給器10a之熱水供給運轉狀態。 15 且，本實施態樣之熱水供給裝置1中，於第丨熱水 供給器10a上未設壓力開關伐，但亦可將該壓力開關闊插 設於所有熱水供給器10a、l〇b、10c。此時，定期換入各 壓力開關閥6之調整桿66之插入量，並藉手動改變先行 形成熱水供給狀態之熱水供給器10a、1〇b、1〇c之順序， 2〇而可將各熱水供給器之壽命均等化，且提高熱水供給裝置 之持久性。又，本實施態樣可構造成雖以手動操作調整桿 66而改變彈簧64之偏壓力，但偏壓力自動產生變化。 發明之效果 15 546458 玖、發明說明 如上述說明，依本發明將有效地增減依對各熱水供給 處之熱水供給量而形成依序運轉狀態之熱水供給器之數量 ，且不需個別之電源及檢測機構，可減低熱水供給裝置之 成本。而且，於熱水供給裝置之設置時可只將壓力開關閥 5 插設於供水管，因此相較於進行佈線等之習知熱水供給裝 置，其設置作業亦變得容易。 【圖式簡單說明】 第1圖係本發明之熱水供給裝置之正面圖。 第2圖係壓力開關閥之截面圖。 10 第3圖係顯示隨壓力開關閥之動作之各熱水供給器上 供水管中之水量與壓力差之關係。 【圖式之主要元件代表符號表】 1...熱水供給裝置 12…熱交換器 2…供水原管 13···燃燒風扇 3…熱水供給處 14...框體 4...合流熱水出水管 15a..第1供水管 5...瓦斯供給管 15b··.第2供水管 6b···第1壓力開關閥 15c…第3供水管 6c.··第2壓力開關閥 16a...第1熱水出水管 10a·.熱水供給器 16b...第2熱水出水管 10b·.熱水供給器 16c...第3熱水出水管 10c..熱水供給器 17.…流量傳感器 11…燃燒爐部 18.···熱水出水溫度傳感器 16 546458 玖、發明說明 50····瓦斯閥 64…彈簧 51....比例控制閥 65...收納部 60····閥本體 66"·調整桿 61_____L游通路 66a"片材 61a…管連接部 66b"凹部 61b...閥座 67…文丘里部 62....下游通路 68...旁通路 62a..管連接部 69...止動器 63…隔板 17546458 发明 Description of the invention (The description of the invention should state: the technical field, the prior art, the content, the embodiments, and the mode of the invention are briefly described. [Technical Field of the Ming] The invention relates to a hot water supply device, which It is formed by arranging a large number of 5 hot water suppliers in parallel. I: Prior Art 3 Background of the Invention When the hot water supply device must be used as a hot water supply device in restaurants and general hospitals, the hot water supply capacity of the hot water supply device is assumed to be used simultaneously in all hot water supply locations. . In this case, it is also possible to redesign and manufacture a large-scale hot water supplier, but it cannot be applied to a state in which the minimum operating water amount that does not overheat the heat exchanger among the minimum heating amounts is large and the hot water supply amount is small. Therefore, it is recommended to construct a number of widely used small hot water supply devices in parallel as the hot water supply device. 15 In this hot water supply device, the heat exchangers of each hot water supplier are respectively connected to a water supply pipe branched from a water supply source pipe connected to a water source for supplying tap water, and the heated hot water is guided to the expected temperature. The hot water outlet pipe of the combined hot water outlet pipe of the hot water supply. Here, when the amount of hot water supply to the hot water supply place is small, it is not economical to operate all the hot water supply devices constituting the hot water supply device. The minimum operating water volume of all hot water supply units must be added up during operation, and a small amount of hot water supply cannot be performed. Therefore, the hot water supply device can be appropriately increased and decreased depending on the hot water supply amount to each hot water supply place. 5 546458 The number of hot water supply as described in the invention. That is, in the conventional hot water supply device, a flow sensor is provided on the original water supply pipe. In addition to the hot water supplier located on the most upstream side of the original water supply pipe, the water supply pipes of each hot water supplier are provided. Water supply solenoid switch 阙. Then, the amount of water in the original water supply pipe that changes according to the increase and decrease in the amount of hot water supply to each hot water supply point is detected by 5 flow sensors, and the water supply electromagnetic safety valve of each hot water supply benefit is added according to the detection result. And increase or decrease the use of hot water supply (for example, refer to Japanese Patent Publication No. Fair Equity No.). Γ ^ Contents of the invention] 10 Problems to be solved by the invention However, in the above device, the power supply for the electromagnetic water supply on-off valve must be different, and it must have a detection mechanism such as a flow sensor for controlling the water supply electromagnetic on-off valve and its control program. Therefore, there is a problem that the cost of the hot water supply device increases. In addition, when the installation work b of the hot water supply device is performed, the wiring work of the water supply solenoid switch valve and the like need to be performed separately, so the installation work is also troublesome. Herein, the present invention provides a hot water supply device for solving the above problems, and the money is used to effectively increase or decrease the number of hot water supply units used in accordance with the amount of hot water supply. It does not cause cost increase and does not require an individual detection mechanism and The control program is 20 types, and it is easier to set the operator. Means for Solving the Problem To solve this problem, the hot water supply device of the present invention is provided with at least two hot water suppliers having a heat exchanger in parallel, and each of the hot water suppliers 6 546458 玖, the heat exchange described in the invention On the device, there are respectively connected the water supply pipe branched from the water supply original pipe connected to the water source to supply tap water, and the hot water outlet pipe which guides the heated hot water to the combined hot water outlet pipe of the expected hot water supply point. ; And, the pressure switch valve is inserted in at least one hot water supplier for X 苢, and the 5 Hai pressure switch valve is based on the water pressure in the original water supply pipe and according to the supply amount to each hot water supply. It will be opened when a predetermined pressure difference occurs between the water pressure in the combined hot water outlet pipe of the increase and decrease. According to the present invention, when any hot water supply device constituting the hot water supply device is in a state of supplying hot water to the hot water supply place, when the faucet is opened to increase the hot water supply amount, the water in the hot water outlet pipe is combined. When the pressure decreases and a predetermined pressure difference is generated between the reduced water pressure and the water pressure in the water supply source that acts on the pressure switch valve from the upstream side, the pressure switch 阙 is turned on. When "Force Open_Open" tap water flows through the water channels inside other hot water suppliers and the hot water supplier forms a hot water supply state, and the hot water supply amount of 15 hot water supply places can be increased. On the other hand, when the hot water supply devices constituting the hot water supply device are in a hot water supply state, when the faucets are sequentially closed at the hot water supply place, the amount of water in the combined hot water outlet pipe is reduced, and the combined hot water is discharged. When the water pressure in the tube rises, and a predetermined dust force difference occurs between the water pressure in the rising water pressure and the water pressure in the original water supply pipe acting from the upper 20 swim side on the pressure switch 阙, the pressure switch valve opens to stop it. Hot water supply from hot water supply. Therefore, it is possible to increase or decrease the hot water supply device used depending on the hot water supply amount. Here, the pressure switch valve is provided with an upstream passage and a downstream passage 7 546458 玖, the valve body described in the invention, so that once the aforementioned pressure difference occurs, the valve seat formed at the end of the upstream passage can be allowed to disengage toward the The biasing mechanism of the biasing force moving in the direction applies a bias, so that the diaphragm in which the valve seat is in place separates the aforementioned upstream passage from the downstream passage. 5 When two or more pressure switch valves are inserted in the water supply pipes of each hot water supply unit, the number of hot water supply units used in order to appropriately increase or decrease the amount of hot water supply to the hot water supply place is required. Make the opening and closing times of pressure switch valves different. At this time, the biasing mechanism is a biasing pressure adjusting mechanism for adjusting the biasing pressure, and when two or more pressure switch valves are inserted in the water supply pipes of each hot water supply device, if the pressure switches are If the bias pressures of the valves are different, the pressure switch valves can be opened sequentially. In addition, for example, by periodically changing the setting of the spring bias of each pressure switch valve, the pressure switch valves that are sequentially opened according to the amount of hot water supply to the hot water supply point can be changed, so each hot water supply device can be performed. The life of each of the 15 hot water supplies caused by rotating operation is equalized. At this time, it is advantageous to insert pressure switch valves in the water supply pipes of all the hot water suppliers constituting the hot water supply device. [Embodiment 3 Detailed description of a preferred embodiment Referring to FIG. 1, the first system shown is a hot water supply device for equipment required for proper hot water supply in more than 20 locations such as restaurants and general hospitals, and the hot water The supply device 1 is arranged in parallel with three widely used hot water supply devices 10a, 10b, and 10c having a maximum hot water supply capacity such as No. 20 to constitute 8 546458 玖, the first, second, and third heat exchangers of the invention description The water supply devices i〇a, i〇b, and 10c are the burner section u to be used as a heating device, a heat exchanger 12 arranged above the burner furnace n, and located below the burner section u and The combustion air is supplied to the combustion furnace section, and the combustion fan 13 of the Π is assembled on a box-shaped frame 5 14 to constitute it. The heat exchangers 12 of each hot water supplier 10a, 10b, and ioc are connected to the first, second, and second sections for supplying tap water branched from a water supply source pipe 2 connected to a water source (not shown). 3 water supply pipes 15a, 15b, 15c, the first, second and third hot water outlet pipes 16a, 16b, 16c which guide the heated hot water to the expected hot water supply 3 of the combined hot water outlet water 4. In addition, a flow sensor 17 is provided on each of the water supply pipes 15a, 15b, and 15c, and a hot water outlet temperature sensor 18 is provided on each of the water outlet pipes 16a, 16b, and 16c. The combustion furnace section 11 The majority of the 15-burner burners with a large number of flame ports are stored in the burner box. The fuel gas supply pipe 5 connected to the gas source is passed through a gas valve 50 and a proportional control valve 51. The combustion furnace section 11 is connected. The operation of the combustion furnace section 11 is controlled by a control mechanism (not shown) provided on each of the hot water supply states 10a, 10b, and 10c. The control mechanism, The hot water supply unit 3 opens the faucet supply ..., X, and the water supply pipes 15a, 15b, and 15c pass through the heat exchanger 12 to pass the tap X / claw to the hot water outlet pipes 16a, 16b, and 16. The heat that communicates with The water channel inside the water supply device, and when the flow sensor 17 detects that the amount of water reaches a predetermined value, the ignition operation of the combustion furnace section u is performed, so the hot water supply device 9 546458 玖, invention description 10a, 10b, 10c forms a hot water supply State. Then, the hot water outlet temperature sensor 18 receives a signal, The proportional control valve 51 is controlled, and the fuel gas supply amount to the combustion furnace section 11 is adjusted to control the hot water temperature to a set temperature. In addition, each of the five hot water suppliers that start combustion of the combustion furnace section u after the combustion gas is supplied The minimum operating water volume of 10a, 10b, and 10c is set to 2.7L / min. Here, when the hot water supply device 1 is configured as described above, it must be increased or decreased depending on each hot water supply point 3. The number of hot water supply units 10a, 10b, and 10c used for the hot water supply. This embodiment is based on the water pressure in the original water supply pipe 2 and The hot water supply above 3 is reduced and the combined hot water outlet pipe is connected. The 4th and 2nd pressure switches of the same structure, which are opened when a pre-pressure difference occurs between the water pressure in the hot water supply connected to the 4th, 6b , 6c are inserted into the second and third water supply pipes 15b,... Referring to FIG. 2, the valve body 60 of the pressure switch valves 6b and 6c is opened at 15 ′, and can be connected to each water supply pipe 15b, 15 respectively. The upstream passage 61 and the downstream passage 62 of the connected pipe connection openings 62a. The upstream passage 61 'is approximately L-shaped and The terminal part ± forms a ㈣ seat. The upstream passage 61 and the downstream passage 62 are separated by a partition 63 provided with the valve seat 61b in place. The partition 63 is provided with a A spring 64 that can each have a biasing force that moves in the disengaging direction from the valve seat 61b applies a bias in the direction of the valve seat 61b. The spring 64 is a spring-receiving portion facing the valve seat 61b and formed on the valve body 60 Inside 65, it is compressedly disposed between 10 546458 玖 inserted through the sheet 66a, and the invention is described as an adjustment mechanism between the end face of the adjustment rod 66 and the partition 63. Furthermore, a venturi portion 67 is provided on the downstream passage 62. The venturi portion 67 controls the movement of the partition plate 63, and communicates with the spring receiving portion μ through the side passage 68. After the pressure difference between the upstream passage 61 and the downstream passage 62 reaches a predetermined value, and the right side resists the bomb meal 64, The baffle 63 is slightly away from the constellation Leo, and communicates with the upstream passage 61 and the downstream passage 62. At this time, the negative pressure generated by the pressure switch valve 6 by the Venturi effect on the Venturi portion 67 is transmitted to the spring storage chamber 65 through the bypass passage 68, and the tap water pressure acting with the upstream side of the partition plate M 10 And all at once. Here, when the hot water supply devices 10b and 10c are set to the hot water supply order in accordance with the hot water supply amount at the hot water supply point 3, it is necessary to make the pressure switch valves 6 open at different times. In the form of this embodiment, in order to change the compression rate of the spring when the elastic material is compressed and set, the biasing force of the spring can be adjusted in 15 stages, and a recess 谕 is formed at 3 positions of the adjustment rod 66, and at the same time, the spring A stopper 69 is disposed on the outer wall of the storage portion 65 so as to face the adjustment lever 66 and lock the stopper 69 in the vertical direction. Then, the biasing force of the spring 64 can be set in three stages by adjusting the amount of insertion of the stopper 69 and the recessed portion 66b into the adjustment lever µ in the storage portion 65. 20 In a hot water supply state where only the first hot water supply device is used, for example, when the second pressure opening _ 6b is turned on, the tap water flowing from the water supply original pipe 2 to the first water supply pipe 15 a is branched into the second heat. The water supply device _, and the water pressure in the first water supply pipe 15 a decreases transiently. On the other hand, 11 546458 玖, the description of the invention, when hot water merges with the combined hot water outlet pipe 4 through the second hot water outlet pipe 16b, 'the combined hot water transitionally forms the heat from the 热水 i hot water outlet pipe. The water resistance reduces the flow rate in the water channel inside the hot water supplier 10a. Therefore, the amount of water in the 'f 1 water supply pipe 15aM becomes the minimum operation water amount is 5 times' and the slave mechanism stops the operation of the combustion furnace 胄 U to stop the supply of hot water to the 帛 1 hot water supplier 10a. With this, when the opening period of the pressure switch valve 6b is determined, when the pressure switch room 6b is opened, the amount of water in the i-th water supply pipe 15a does not become the minimum operating water amount, that is, the hot water is merged from the second hot water outlet pipe 16b toward the confluence. The outlet pipe * 10 has less hot water for confluence and opens the pressure switch valve 6b. Therefore, it is necessary to set the biasing force of the spring 64 and the formation position of the recess 6 of the adjustment rod 66. This embodiment aspect is when the pressure difference is 20KPa formed on the return position of the adjustment lever 66 (the rightmost recess in the second figure), 25KPa is formed on the middle position, and 胤 pa is formed on the position where it is held. In order to separate the diaphragm ^ from the valve seat 62b and open it, the biasing force of the spring 64 and the formation position of the recess 66b of the adjustment rod 66 are set. Next, the operation of the hot water supply device of this embodiment will be described. Here, the adjustment lever 66 of the first pressure switch valve 6b is set to the intermediate position, and then the second pressure switch valve 6c is set to the push-in position. 20 When the faucet is turned on at the hot water supply point 3, first tap water flows through the first hot water supply pipe 15a. When the flow sensor 17 detects that the amount of tap water reaches the minimum operating water amount (2.7 / min), the control mechanism opens the gas valve 50 to start the fuel gas supply, and simultaneously performs an ignition operation to burn 12 546458 玖, invention description furnace The part π operates' and the hot water supply unit 10a enters a hot water supply state. At this time, "on the upstream passage 61 of the first and second pressure switch valves 6b, 6c", the same water pressure as that in the first hot water supply pipe 15a is exerted. Next, when the faucet is opened at most hot water supply points 3 to increase the amount of hot water supply, the water pressure in the combined hot water outlet pipe 4 decreases. At this time, the water pressure inside the second and third hot water supply devices 10b and 10c decreases. Therefore, the water pressure in the downstream passage 62 and the spring chamber 65 of the 'pressure switching valves 6b and 6c is reduced. Then, if a predetermined pressure difference is reached between the water pressure 'in the spring chamber 65 and the water pressure acting on the upstream passage 61, the pressure switch valve of the second water supply pipe 15b will be opened against the biasing force of the spring 64. At this time, the negative pressure generated by the pressure switch valve 6b by the venturi effect on the venturi portion 67 is transmitted to the spring storage chamber 65 through the bypass passage, and the tap water pressure acting on the upstream side of the partition plate 63 is fully opened instantaneously. . Then, when the tap water flows in the hot water supply device 10b, and the water amount exceeds 15 and exceeds the minimum operating water amount, the burner unit 11 operates as described above, and the hot water supply device 1 Ob enters the hot water supply state, and the heat The water supply device 1 forms a hot water supply operation state of the two water heaters 10a and 10b. Next, the faucet is opened at most hot water supply points 3 to increase the amount of hot water supply, and the water pressure in the third hot water supply device 10c decreases, and the pressure in the spring chamber 65 of the pressure switch valve 6c is reduced. When the pressure difference between the water pressure acting on the upstream path reaches 30 KPa, the pressure switch valve 6c of the third water supply pipe 15c is opened against the biasing force of the spring material as described above. Then, when the incoming water circulates in the hot water supplier 10c, and the amount of water exceeds 13 546458 玖, the minimum operating water amount of the invention, the combustion furnace section 11 operates as described above, and the hot water supplier 10c generates heat. Water supply status. As a result, the hot water supply device 1 is set to the hot water supply operation state of the three hot water suppliers 10a, 10b, and 10e. 5 Here, the relationship between the water pressure and the flow rate of the tap water in the water supply pipes 15a, 15b, and 15c of each hot water supply device 1 is shown in FIG. 3. The solid line τ shows the amount of water in the hot water outlet pipe 4 which is not confluent, and the solid lines # 1, # 2, and # 3 show the hot water supply units 10a, 10b, and 10 respectively relative to the water pressure. The amount of water in the water supply 15 of c. Therefore, when the pressure difference between the water pressure in the upstream passage 61 and the water pressure in the downstream passage 62 increases according to the increase in the amount of hot water supply, the first pressure switch valve 6b resists the force of the spring 64. turn on. At this time, the water pressure in the water supply pipe 15a of the first hot water supply device 10a decreases transiently, and since the hot water merges from the second hot water supply device 10b toward the combined hot water outlet pipe 4, the amount of water is increased. It is reduced, but it is not reduced to the amount of water (2.7 L / min) at which the burner section 11 of the fifteenth first hot water supplier 10a is turned off. Then, the water pressure in the first and second water supply pipes 15a and 15b gradually becomes equal. Next, when the amount of hot water supply is increased and the pressure difference is about 30 KPa, the second pressure switch valve 6c is opened. At this time, the water pressure in the water supply pipes 15a and 15b is reduced transiently, and since the hot water is merged from the third hot water supply 20 feeder 10c to the combined hot water outlet pipe 4, the first and second water supply The amount of water in the tubes 15a and 15b is reduced, but it will not be reduced to the amount of water (i.e., less than 2.7 / min) at which the i and second hot water supplies 10a and 10b are turned off. Finally, if the faucets are closed in sequence at the hot water supply point 3, the water volume in the combined hot water outlet pipe 4 decreases with the increase of 14 546458 玖, the invention description, and the water pressure rises. Its water pressure rises. Then, when the above-mentioned pressure difference is 30 KPa or less, the diaphragm 63 is moved toward the valve seat direction 62b by the biasing force of the spring 64, and the pressure switch valve 6c is opened. At this time, the third hot water supply device 51 is in a non-water-permeable state, and the combustion furnace unit 11 is turned off to form a hot water supply stop state, and the hot water supply device system returns to the two hot water supply devices 10a and 10b. Hot water supply operation. Next, when the faucet is closed at the hot water supply point 3, when the water pressure in the water channel inside the hot water supplier 10b rises, and when the above-mentioned pressure difference becomes 10 or less than 25Kpa, when the partition 63 is biased by the spring 64 When moving in the valve seat direction 62b, the pressure switch valve 6b is opened. At this time, the second hot-water supply device 10b is in a non-water-permeable state, and the combustion furnace unit u is turned off, and a hot-water supply stop state is established. As a result, the hot water supply device returns to the hot water supply operation state of the first hot water supplier 10a. 15 Moreover, in the hot water supply device 1 according to this embodiment, no pressure switch is provided on the hot water supply device 10a, but the pressure switch can also be inserted into all the hot water supply devices 10a and 10. b, 10c. At this time, the insertion amount of the adjustment rod 66 of each pressure switch valve 6 is periodically changed, and the order of the hot water supply devices 10a, 10b, and 10c that previously formed the hot water supply state is manually changed to 20 The life of each hot water supplier is equalized, and the durability of the hot water supply device is improved. In addition, the present embodiment may be configured such that although the biasing force of the spring 64 is changed by manually operating the adjustment lever 66, the biasing force is automatically changed. Effect of the invention 15 546458 发明 Description of the invention As described above, according to the present invention, the number of hot water supply units that are sequentially operated according to the amount of hot water supply to each hot water supply place is effectively increased and decreased, and does not require Individual power supply and detection mechanism can reduce the cost of hot water supply devices. In addition, when the hot water supply device is installed, only the pressure switch valve 5 can be inserted into the water supply pipe. Therefore, it is easier to install the hot water supply device compared to a conventional hot water supply device such as wiring. [Brief description of the drawings] FIG. 1 is a front view of the hot water supply device of the present invention. Figure 2 is a sectional view of a pressure switch valve. 10 Figure 3 shows the relationship between the amount of water in the water supply pipe and the pressure difference in each hot water supply unit following the operation of the pressure switch valve. [Representative symbols for main components of the figure] 1 ... hot water supply device 12 ... heat exchanger 2 ... water supply pipe 13 ... combustion fan 3 ... hot water supply place 14 ... frame body 4 ... Confluent hot water outlet pipe 15a: 1st water supply pipe 5 ... gas supply pipe 15b ... 2nd water supply pipe 6b ... 1st pressure switch valve 15c ... 3rd water supply pipe 6c ... 2nd pressure switch Valve 16a ... 1st hot water outlet pipe 10a ... hot water supplier 16b ... 2nd hot water outlet pipe 10b ... hot water supplier 16c ... 3rd hot water outlet pipe 10c ... hot water Supply 17. Flow sensor 11 ... Combustion furnace section 18 .... Hot water outlet temperature sensor 16 546458 发明, Description of the invention 50 ... Gas valve 64 ... Spring 51 ... Proportional control valve 65 ... Receiving part 60 ... Valve body 66 " Adjustment lever 61_____L swim path 66a " Sheet 61a ... Tube connection part 66b " Recess 61b ... Valve seat 67 ... Venturi part 62 .... Downstream path 68 .. .Bypass 62a..pipe connection 69 ... stop 63 ... partition 17