JP2005325874A

JP2005325874A - Piping joint

Info

Publication number: JP2005325874A
Application number: JP2004142814A
Authority: JP
Inventors: Goji Aoki; 剛司青木; Yoshihiro Zushi; 良広図子
Original assignee: Noritz Corp
Current assignee: Noritz Corp
Priority date: 2004-05-12
Filing date: 2004-05-12
Publication date: 2005-11-24
Anticipated expiration: 2024-05-12
Also published as: JP4452998B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piping joint capable of communicating and connecting both tips of a supply pipe and a return pipe with each other while jointing and securing the both tips in a position in a hot water faucet side of hot water supply piping, in order to perform piping to exhibit an instantaneous water heating function by warming the hot water supply piping by heat transfer from heating piping. <P>SOLUTION: A pair of joint parts 82, 82 protruded in the same direction from the periphery of a main body part 81 communicate with each other by a U-shaped communication passage, and a jointed part 83 comprising a pair of fastener belt pieces 831, 831 is protruded from the end face of the main body part 81. The downstream end of the supply pipe 72 is connected to one of the joint parts 82, 82, and the upstream end of the return pipe 73 is connected to the other of the joint parts 82, 82. The downstream end and the upstream end are jointed and fixed to a hot water supply joint interposed between the tip of the hot water supply piping and the hot water faucet by the jointed part 83. Heat transfer from the hot water supply joint is received by a heat sensitive part 851, and an inside drive element operates a valve element to switch opening/closing of the communication passage. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、互いに添わせた２本の配管の同じ側の各端部を連通状態に連結しかつ連結した状態で自身を他の配管部材等に連結固定することにより上記２本の配管の固定を行うために用いられる配管継手に関し、特に往き及び戻りの一対の温水循環式暖房配管の往き管から戻り管への折返し部を構成し、かつ、その一対の温水循環式暖房配管を給湯配管に添わせた状態に配設するために上記折返し部を給湯配管に対し連結固定するという用途などのために好適に用いられる配管継手に係る。 The present invention fixes the above two pipes by connecting the ends on the same side of the two pipes attached to each other in a connected state and connecting and fixing itself to another pipe member or the like. In particular, the pipe joint used to perform the operation is configured to form a folded portion from the return pipe to the return pipe of the pair of forward and return hot water circulation heating pipes, and the pair of hot water circulation heating pipes are used as hot water supply pipes. The present invention relates to a pipe joint that is preferably used for the purpose of connecting and fixing the folded portion to a hot water supply pipe so as to be disposed in the attached state.

従来、給湯器の分野では、給湯栓を開いて給湯を開始させても給湯器で加熱された湯が出る前にその給湯器から給湯栓まで配管された給湯配管内の冷たい水が給湯栓から先に出るという現象が給湯開始初期において生じていた。これを解消して、給湯開始初期からある程度に加温された湯が出るようにするという、給湯即湯対策のために、特に温水循環式暖房機能と給湯機能とを備えた給湯器において、温水循環用暖房配管の内の往き管を通して供給される高温水が給湯配管の給湯栓付近で折り返して戻り管を通して戻されるように、それら往き及び戻りの一対の暖房配管を給湯配管に添わせ、暖房配管内の高温水からの伝熱により給湯配管内の湯水がある一定の温度に保温されるようにすることが行われている。このような給湯配管に対し一対の暖房配管を添わせた状態にする構成として、給湯配管と一対の暖房配管とを束ねるように外周囲をテープ状の断熱材で巻き込み、さらにこれらの外側に保護管を外挿して保護管の内部に収納することが提案されている（例えば特許文献１参照）。 Conventionally, in the field of water heaters, even if the water heater is opened and the hot water supply is started, before the hot water heated by the water heater comes out, the cold water in the hot water pipe connected from the water heater to the water heater taps from the water heater tap. The phenomenon of going out first occurred at the beginning of hot water supply. In order to solve this problem, hot water that has been heated to a certain extent from the beginning of hot water supply is taken out, especially in hot water heaters equipped with a hot water circulation heating function and a hot water supply function. The pair of heating and return heating pipes are attached to the hot water supply pipe so that the high-temperature water supplied through the forward pipe in the circulation heating pipe is folded back near the hot water tap of the hot water supply pipe and returned through the return pipe. The hot water in the hot water supply pipe is kept at a certain temperature by heat transfer from the high temperature water in the pipe. As a configuration in which a pair of heating pipes are attached to such a hot water supply pipe, the outer periphery is wrapped with a tape-like heat insulating material so that the hot water supply pipe and the pair of heating pipes are bundled, and further protected outside these It has been proposed to extrapolate the tube and store it inside the protective tube (see, for example, Patent Document 1).

特開平８−１４５３９１号公報JP-A-8-145391

ところで、上記の一対の暖房配管を給湯栓位置まで延ばして給湯配管に添わせた状態にするには、暖房配管の往き管の下流端と、戻り管の上流端とを互いに連通させて暖房配管の折返し部を形成する必要がある。上記特許文献１では、上記の往き管と戻り管とを１本物の共通の管で構成して、この共通管を上記の給湯栓近傍で折り曲げることにより折返し部の形成を行うことが提案されてはいるが、管自体が折り曲げにより扁平に歪んで通路断面積が変化したり、折り曲げ位置を確実に所定位置に設定し難くバラツキが生じたりするなどの問題点がある。このため、通常は、往き管と戻り管とを別々の管により構成し、このような往き管の下流端と、戻り管の上流端とを互いに連通接続させる作業が行われている。 By the way, in order to extend the pair of heating pipes to the hot-water tap position so as to follow the hot-water supply pipe, the downstream end of the forward pipe of the heating pipe and the upstream end of the return pipe are connected to each other. It is necessary to form a folded portion. In the above-mentioned Patent Document 1, it is proposed that the forward pipe and the return pipe are configured by a single common pipe and the folded portion is formed by bending the common pipe in the vicinity of the hot-water tap. However, there are problems such that the pipe itself is distorted flat by bending and the cross-sectional area of the passage changes, and it is difficult to reliably set the bending position to a predetermined position. For this reason, usually, the forward pipe and the return pipe are constituted by separate pipes, and the downstream end of the forward pipe and the upstream end of the return pipe are connected in communication with each other.

しかしながら、上記の往き管の下流端と、戻り管の上流端との連通接続作業は、例えば、各端に接続するための２つのタケノコ継手と、これらを互いに連通させる通路が穿たれた介在物とを互いに溶接して一体化した折返し部を現場毎に用意し、これを用いて往き管と戻り管とを互いに連通接続させることにより行われるため、作業の一定品質の確保が困難になって作業の質にばらつきが生じてしまうおそれがある。又、暖房配管に接続後の上記の折返し部も本来は給湯栓の付け根位置に位置付けて給湯栓までの給湯配管内の湯水を加温する必要があるものの、上記の現場作業での折返し部の用意となるため一定位置に定まらず、給湯栓付近の工事の仕上がり状況も現場毎に異なって外観上の問題をも招くことにもなる。 However, the communication connection work between the downstream end of the forward pipe and the upstream end of the return pipe includes, for example, two bamboo joints for connecting to each end, and an inclusion in which a passage for communicating them is opened. It is done by preparing a folded part that is welded and integrated with each other at each site, and using this to connect the outgoing pipe and the return pipe to each other, making it difficult to ensure a constant quality of work. There may be variations in the quality of work. In addition, although the above folded part after connecting to the heating pipe is originally positioned at the base of the hot water tap and it is necessary to heat the hot water in the hot water pipe up to the hot water tap, Since it is prepared, it is not settled at a certain position, and the finished state of the work near the hot water tap varies from site to site, resulting in appearance problems.

本発明は、このような事情に鑑みてなされたものであり、その目的とするところは、暖房配管の往き管と戻り管とを確実に連通接続しかつ給湯配管に対し確実に所定位置で連結固定させることができる配管継手を提供することにある。加えて、温度検出やそれに基づく開閉制御等の制御を必要とすることなしに暖房配管を介した高温水の供給又は停止の切換えを行い得る機能を配管継手に付与することも目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to reliably connect the outgoing pipe and the return pipe of the heating pipe in a predetermined position with respect to the hot water supply pipe. The object is to provide a pipe joint that can be fixed. In addition, it is an object to provide a pipe joint with a function capable of switching supply or stop of high-temperature water via a heating pipe without requiring temperature detection or control such as opening / closing control based on the temperature detection.

上記目的を達成するために、本発明では、本体部と、この本体部から互いに隣接して同じ向きに突出する一対の継手部と、上記本体部から上記一対の継手部とは異なる向きに突出する連結部と、上記本体部に形成され上記一対の継手部の一方の先端から他方の先端までの間を連通させる連通路とを一体に備えることとする。そして、上記一対の継手部を第１及び第２の配管部材の先端開口と接続可能に形成し、上記連結部を第３の配管部材に対し本体部を着脱可能に連結するように形成し、かつ、上記一対の継手部と連結部との位置関係として上記本体部が連結されることにより上記継手部に接続された第１及び第２の配管部材を上記第３の配管部材に対し平行に添った状態に配置させるように設定した（請求項１）。 To achieve the above object, according to the present invention, a main body, a pair of joints protruding from the main body adjacent to each other in the same direction, and protruding from the main body in a direction different from the pair of joints. And a communication passage that is formed in the main body and communicates between one end of the pair of joints to the other end. And the pair of joint portions are formed so as to be connectable to the tip openings of the first and second piping members, and the connecting portion is formed so as to removably connect the main body portion to the third piping member, In addition, the first and second piping members connected to the joint portion are connected in parallel to the third piping member by connecting the main body portion as a positional relationship between the pair of joint portions and the connecting portion. It was set so as to be placed in the attached state (claim 1).

この請求項１に係る発明の場合、一対の継手部に個別に接続された第１の配管部材と第２の配管部材とが上記連通路により互いに連通され、この連通路により第１の配管部材と第２の配管部材との折返し部が形成される。そして、連結部により第３の配管部材に対し連結されることにより、上記折返し部の連通路により連通された第１及び第２の両配管部材が上記第３の配管部材に対し平行に添った状態に自動的にかつ確実に整列配置されることになる。つまり、第１〜第３の３つの配管部材が一塊りに束ねられて一つの一体の延長配管の如くに配置される。従って、第１及び第２の配管部材として暖房配管の往き管及び戻り管を適用し、第３の配管部材として給湯配管を適用することにより、往き管の下流端と戻り管の上流端とを流れの向きを折り返すように連通接続し、かつ、この折返し部分を給湯配管に対し確実に所定位置で連結させて往き管及び戻り管を給湯配管に対し確実に所定の位置関係に配置させることが可能となる。なお、上記の「添った状態」とは、互いに接触した状態又は非接触ではあるが互いに近接した状態のいずれも含むものである。 In the case of the invention according to claim 1, the first piping member and the second piping member individually connected to the pair of joint portions are communicated with each other by the communication passage, and the first piping member is connected by the communication passage. And a folded portion between the second piping member is formed. And by connecting with a 3rd piping member by a connecting part, both the 1st and 2nd piping members connected by the communicating path of the above-mentioned return part were attached in parallel to the above-mentioned 3rd piping member. It will be aligned automatically and reliably to the state. That is, the first to third piping members are bundled together and arranged like one integral extension piping. Therefore, by applying the forward pipe and the return pipe of the heating pipe as the first and second piping members and the hot water supply pipe as the third pipe member, the downstream end of the forward pipe and the upstream end of the return pipe are connected. The communication direction is connected so as to turn the flow direction, and the turning portion is securely connected to the hot water supply pipe at a predetermined position so that the forward pipe and the return pipe are reliably arranged in the predetermined positional relationship with respect to the hot water supply pipe. It becomes possible. Note that the “attached state” includes both a state where they are in contact with each other and a state where they are not in contact but are close to each other.

上記の請求項１に係る発明においては、次のような種々の事項の特定又は追加により、より好ましい作用が得られる。すなわち、第１としては、上記第３の配管部材として給湯栓自体又は給湯栓の基部に接続される給湯継手を含む給湯配管とし、上記連結部としてこの給湯配管を外側から挟み込むことにより上記本体部を給湯配管に対し連結する構成とすることができる（請求項２）。この場合には、第１及び第２の両配管部材を連通接続して折り返させる配管継手を上記の給湯栓又は給湯継手等の給湯配管に連結し、その連結を給湯配管の外側から挟み込む連結部により容易に行い得る。 In the invention according to the first aspect, more preferable action can be obtained by specifying or adding the following various items. That is, the first is a hot water supply pipe including the hot water tap itself or a hot water supply joint connected to the base of the hot water tap as the third piping member, and the main body portion by sandwiching the hot water supply pipe from the outside as the connecting portion. It can be set as the structure connected with hot water supply piping (Claim 2). In this case, a pipe joint for connecting and turning back both the first and second pipe members is connected to a hot water supply pipe such as the above-mentioned hot-water tap or hot-water supply joint, and the connection part sandwiching the connection from the outside of the hot water supply pipe Can be easily performed.

第２としては、上記連通路に、この連通路を開閉切換して上記第１の配管部材から第２の配管部材への流れを許容又は遮断する開閉弁を介装することもできる（請求項３）。この場合には、第３の配管部材に対し加温のための伝熱等の作用を及ぼす第１及び第２の配管部材内の流体を上記開閉弁の開閉変換により流通させたり流通を停止させたりという切換が可能になる。この場合の開閉弁は、手動開閉操作式の開閉弁であっても、電磁弁等の制御により開閉作動される開閉弁であっても、いずれでも適用することができる。 Secondly, an open / close valve that allows the flow from the first pipe member to the second pipe member to be opened or closed by switching the open / close state of the communication path may be interposed in the communication path. 3). In this case, the fluid in the 1st and 2nd piping member which acts on the 3rd piping member, such as heat transfer for heating, is circulated by the opening-and-closing conversion of the above-mentioned on-off valve, or distribution is stopped. It becomes possible to switch. The open / close valve in this case can be applied to either an open / close valve of a manual open / close operation type or an open / close valve operated to open / close by control of an electromagnetic valve or the like.

中でも、上記開閉弁として感熱式の自己開閉弁により構成することにより、特に第３の配管部材の温度如何によって第１及び第２の両配管部材間の流れを許容したり停止させたりしたい場合に好適なものとなる。すなわち、上記自己開閉弁として感熱式の駆動素子と、この駆動素子により作動されて上記連通路を開閉切換する弁体とを備えたものとし、上記駆動素子として上記連結部により第３の配管部材と連結された状態でその第３の配管部材から伝熱を受けるように配設されかつ所定温度以上の伝熱を受けて上記弁体を閉位置まで作動させる構成とする（請求項４）。この場合には、駆動素子が第３の配管部材から所定温度以上の伝熱を受ければ、その駆動素子により弁体が閉位置まで作動されて第１及び第２の両配管部材間の流れが停止されることになる。つまり、手動開閉操作も、何らかの温度検出に基づく作動制御も一切不要にして第３の配管部材からの伝熱に基づきその伝熱される温度如何に応じて開閉作動させることが可能になる。これにより、第３の配管部材として給湯配管を適用してこの給湯配管の加温・保温を図る即湯対策のために第１及び第２の両配管部材を用いる場合には、効率化及び省力化が図られることになる。 In particular, when the above-mentioned on-off valve is constituted by a heat-sensitive self-opening / closing valve, particularly when it is desired to allow or stop the flow between the first and second piping members depending on the temperature of the third piping member. This is preferable. That is, the self-opening / closing valve includes a heat-sensitive driving element and a valve body that is operated by the driving element to open / close the communication path, and the third piping member is connected to the connecting portion as the driving element. And is configured to receive heat transfer from the third piping member in a state where it is connected to the valve body, and to receive the heat transfer at a predetermined temperature or more to operate the valve body to the closed position (claim 4). In this case, if the drive element receives heat transfer of a predetermined temperature or more from the third piping member, the valve element is actuated to the closed position by the drive element, and the flow between the first and second piping members is Will be stopped. That is, the manual opening / closing operation and the operation control based on some temperature detection are not required, and the opening / closing operation can be performed according to the temperature at which the heat is transferred based on the heat transfer from the third piping member. As a result, when both the first and second piping members are used as a third piping member, the hot water supply piping is used as a third piping member, and the hot water countermeasure is intended to warm and keep the hot water supply piping. Will be achieved.

第３としては、上記連通路に、この連通路の通路断面積を変更して上記第１の配管部材から第２の配管部材への通過流量を変更調整する調整弁を介装することもできる（請求項５）。この場合には、第３の配管部材に対し加温のための伝熱等の作用を及ぼすことになる第１及び第２の配管部材内の流体の流量を上記調整弁により変更調整することが可能になり、上記の伝熱等の作用の度合を変更調整することが可能になる。この場合の調整弁は、手動操作式の調整弁であっても、電磁式又は電動式等の制御により通過流量を変更調整し得る流量制御弁であっても、いずれでも適用することができる。 Thirdly, an adjustment valve that changes and adjusts the passage flow rate from the first piping member to the second piping member by changing the passage cross-sectional area of the communication passage can be interposed in the communication passage. (Claim 5). In this case, it is possible to change and adjust the flow rate of the fluid in the first and second piping members that will act on the third piping member such as heat transfer for heating. It becomes possible, and it becomes possible to change and adjust the degree of the action such as heat transfer. The adjustment valve in this case can be applied to either a manually operated adjustment valve or a flow rate control valve that can change and adjust the passing flow rate by electromagnetic or electric control.

中でも、上記調整弁として感熱式の自己調整弁により構成することによって、特に第３の配管部材の温度如何によって第１及び第２の両配管部材間の通過流量を変更調整して上記の伝熱等の作用量を自動的に変更調整させたい場合に好適なものとなる。すなわち、上記自己調整弁として感熱式の駆動素子と、この駆動素子により連通路に対し交差するように進退作動されて通路断面積を変更させる弁体とを備えたものとし、上記駆動素子として上記連結部により第３の配管部材と連結された状態でその第３の配管部材から伝熱を受けるように配設されかつ伝熱温度に応じて上記弁体を進退作動される構成とする（請求項６）。この場合には、駆動素子が第３の配管部材から受ける伝熱温度が高い程より大きく弁体を前進させるというように伝熱温度の如何に応じて弁体を進退作動させ連通路の通路断面積を変更させて、通過流量が自動的に変更されることになる。これにより、第３の配管部材として給湯配管を適用してこの給湯配管の加温・保温を図る即湯対策のために第１及び第２の両配管部材を用いる場合には、その加温の程度を給湯配管側の温度に応じて自動的に変更調整し得ることになり、効率化及び省力化が図られることになる。 Above all, by configuring the adjusting valve with a heat-sensitive self-regulating valve, it is possible to change and adjust the passage flow rate between the first and second piping members, depending on the temperature of the third piping member. This is suitable when it is desired to automatically change and adjust the amount of action. That is, the self-regulating valve includes a heat-sensitive driving element, and a valve body that is advanced and retracted by the driving element so as to intersect the communication path to change the passage cross-sectional area. The valve body is arranged to receive heat transfer from the third piping member in a state where it is connected to the third piping member by the connecting portion, and the valve body is advanced and retracted in accordance with the heat transfer temperature (claim). Item 6). In this case, the valve element is advanced and retracted depending on the heat transfer temperature so that the higher the heat transfer temperature received by the drive element from the third piping member is, the larger the valve element is advanced. By changing the area, the passing flow rate is automatically changed. As a result, when both the first and second piping members are used as a third piping member for the immediate hot water countermeasure in which the hot water supply piping is applied to warm and keep the hot water supply piping, The degree can be automatically changed and adjusted according to the temperature on the hot water supply pipe side, so that efficiency and labor saving are achieved.

第４としては、上記第１の配管部材を熱源としての温水が供給される往き管とし、上記第２の配管部材を放熱後の温水を戻す戻り管とし、上記連通路により上記往き管から戻り管への温水の折返し部を構成し、上記第３の配管部材として給湯栓自体又は給湯栓の基部に接続される給湯継手を含む給湯配管とし、上記連結部によりこの給湯配管に連結されることにより少なくとも上記往き管と給湯配管とが上記往き管から温水の熱が給湯配管に対し伝熱可能な状態に配置される構成とすることができる（請求項７）。この場合には、給湯配管を往き管内に供給される温水により加温・保温して、給湯栓が開かれた際に所定温度以上の湯を即湯させるという給湯の即湯機能を容易に実現させる得ることになる。 Fourth, the first pipe member is an outgoing pipe to which hot water is supplied as a heat source, and the second pipe member is a return pipe that returns the hot water after heat dissipation, and returns from the forward pipe by the communication path. A hot water return portion to the pipe is configured, and the third piping member is a hot water supply pipe including a hot water tap itself or a hot water supply joint connected to the base of the hot water tap, and is connected to the hot water supply pipe by the connecting portion. Accordingly, at least the forward pipe and the hot water supply pipe can be arranged in a state in which the heat of the hot water can be transferred from the forward pipe to the hot water supply pipe (claim 7). In this case, the hot water supply hot water function that easily warms hot water above the specified temperature when the hot water tap is opened is easily realized by warming and warming the hot water supply pipe with the hot water supplied in the forward pipe. Will get you.

以上、説明したように、請求項１〜請求項７のいずれかの配管継手によれば、一対の継手部と連通路とにより第１の配管部材と第２の配管部材とを互いに連通させて第１及び第２の両配管部材の折返し部を形成することができる。そして、連結部により第３の配管部材に対し連結することにより、上記折返し部の連通路により連通接続された第１及び第２の両配管部材を上記第３の配管部材に対し平行に添った状態に自動的にかつ確実に整列配置させることができる。つまり、１つの配管継手によって、第１及び第２の両配管継手を互いに連通接続させた上に、これらを第３の配管部材に添わせて第１〜第３の３つの配管部材を一体の延長配管の如くに配置させることができる。従って、第１及び第２の配管部材として暖房配管の往き管及び戻り管を適用し、第３の配管部材として給湯配管を適用することにより、往き管の下流端と戻り管の上流端とを流れの向きを折り返すように連通接続し、かつ、この折返し部分を給湯配管に対し確実に所定位置で連結させて往き管及び戻り管を給湯配管に対し確実に所定の位置関係に配置させる配管継手を提供することができる。 As described above, according to any one of the pipe joints of the first to seventh aspects, the first pipe member and the second pipe member are communicated with each other by the pair of joint portions and the communication path. Folded portions of both the first and second piping members can be formed. And by connecting with a 3rd piping member by a connection part, both the 1st and 2nd piping members connected by the communication path of the said folding | returning part were attached in parallel with respect to the said 3rd piping member. It can be automatically and reliably aligned with the state. That is, after the first and second pipe joints are connected to each other by one pipe joint, the first to third pipe members are integrated with the third pipe member. It can be arranged like an extension pipe. Therefore, by applying the forward pipe and the return pipe of the heating pipe as the first and second piping members and the hot water supply pipe as the third pipe member, the downstream end of the forward pipe and the upstream end of the return pipe are connected. A pipe joint that communicates and connects the flow direction so as to be folded back, and reliably connects the folded portion to the hot water supply pipe at a predetermined position so that the forward pipe and the return pipe are arranged in a predetermined positional relationship with respect to the hot water pipe. Can be provided.

特に、請求項２によれば、第１及び第２の両配管部材を連通接続して折り返させる配管継手を、上記の給湯栓又は給湯継手等の給湯配管に対しその給湯配管の外側から連結部により挟み込むことにより容易に連結させることができる。 In particular, according to claim 2, a pipe joint for connecting and turning back both the first and second pipe members is connected to a hot water supply pipe such as the hot water tap or the hot water joint from the outside of the hot water supply pipe. It can be easily connected by sandwiching.

請求項３によれば、第１及び第２の両配管部材間の流れを許容したり停止したりという開閉切換を行うことができるようになる。特に請求項４によれば、第１及び第２の両配管部材間の流れを許容したり停止したりする開閉切換を第３の配管部材側の温度の如何によって自動的に行うことができるようになる。これにより、第３の配管部材として給湯配管を適用してこの給湯配管の加温・保温を図る即湯対策のために第１及び第２の両配管部材を用いる場合に、加温するか否かの切換を給湯配管側の温度に基づいて自動的に行うことができ、効率化及び省力化を図ることができるようになる。 According to the third aspect, it is possible to perform opening / closing switching such as allowing or stopping the flow between the first and second piping members. In particular, according to the fourth aspect of the present invention, the open / close switching for allowing or stopping the flow between the first and second piping members can be automatically performed depending on the temperature on the third piping member side. become. Accordingly, whether or not heating is performed when both the first and second piping members are used as a third hot water pipe for applying the hot water supply pipe as a third piping member to warm and keep the hot water supply pipe warm. Such switching can be automatically performed based on the temperature on the hot water supply pipe side, and efficiency and labor saving can be achieved.

請求項５によれば、第３の配管部材に対し加温のための伝熱等の作用を及ぼす第１及び第２の配管部材内の流体の流量を調整弁により変更調整することができ、上記の伝熱等の作用の度合を変更調整することができるようになる。特に、請求項６によれば、第１及び第２の両配管部材間の通過流量を第３の配管部材側の温度の如何に応じて自動的に変更調整することができるようになる。これにより、第３の配管部材として給湯配管を適用してこの給湯配管の加温・保温を図る即湯対策のために第１及び第２の両配管部材を用いる場合に、その加温の程度を給湯配管側の温度に応じて自動的に変更調整することができ、効率化及び省力化を図ることができるようになる。 According to claim 5, the flow rate of the fluid in the first and second piping members that exerts an action such as heat transfer for heating on the third piping member can be changed and adjusted by the adjustment valve, It becomes possible to change and adjust the degree of the effect of the heat transfer or the like. In particular, according to the sixth aspect, the passing flow rate between the first and second piping members can be automatically changed and adjusted according to the temperature on the third piping member side. As a result, when the first and second piping members are used as a third piping member, and both the first and second piping members are used as a measure against the hot water to heat and maintain the hot water piping, Can be automatically changed and adjusted according to the temperature of the hot water supply pipe side, and efficiency and labor saving can be achieved.

請求項７によれば、給湯配管を往き管内に供給される温水により加温・保温して、給湯栓が開かれた際に所定温度以上の湯を即湯させるという給湯の即湯機能を容易に実現させることができ、この場合の往き管及び戻り管の給湯配管に対する配置状態を連結部による容易な連結作業により確実に平行に添って整列した状態にすることができる。 According to claim 7, the hot water supply hot water function of easily heating hot water at a predetermined temperature or higher when the hot water tap is opened by warming and warming the hot water supply pipe with hot water supplied into the outgoing pipe is easy. In this case, the arrangement state of the forward pipe and the return pipe with respect to the hot water supply pipe can be surely aligned in parallel by an easy connecting operation by the connecting portion.

以下、本発明の実施形態を図面に基づいて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の実施形態が適用される給湯器（複合熱源機）の例を示す。この給湯器２は、少なくとも給湯機能と、温水循環式の暖房機能とを有するものである。同図において、３は給湯回路、４は給湯器２から台所等の給湯栓４１まで配管された給湯配管、５は暖房回路、６ａ，６ｂ，６ｃは暖房端末、７ａ，７ｂ，７ｃ，７ｄはそれぞれ往き管７２及び戻り管７３からなる暖房配管である。この実施形態は、暖房配管７ｄによって給湯配管４内の滞留湯水を加温・保温し、給湯栓４１を開けば即座に所定の温度の湯が出湯されるという、給湯即湯機能を有するように構成したものである。 FIG. 1 shows an example of a water heater (composite heat source machine) to which an embodiment of the present invention is applied. The water heater 2 has at least a hot water supply function and a hot water circulation heating function. In the figure, 3 is a hot water supply circuit, 4 is a hot water supply pipe piped from the water heater 2 to a hot water tap 41 of a kitchen etc., 5 is a heating circuit, 6a, 6b and 6c are heating terminals, 7a, 7b, 7c and 7d are These are heating pipes each composed of an outgoing pipe 72 and a return pipe 73. This embodiment has a hot water supply and hot water function in which the hot water in the hot water supply pipe 4 is heated and kept warm by the heating pipe 7d, and hot water of a predetermined temperature is immediately discharged when the hot water tap 41 is opened. It is composed.

上記給湯回路３は、給湯用バーナ３１と、この給湯用バーナ３１の燃焼熱により熱交換加熱される給湯用熱交換器３２と、この熱交換器３２に水道水等の水を給水する給水路３３と、熱交換器３２から加熱された湯が出湯される出湯路３４とを備えている。上記給水路３３の上流端は水道管等の給水源の下流端と接続され、上記出湯路３４の下流端は上記給湯配管４の上流端と接続されており、この給湯配管４は台所等まで配管されて下流端に給湯継手４２を介して給湯栓４１が接続されている。そして、ユーザが給湯栓４１を開くと、給水路３３、熱交換器３２、出湯路３４及び給湯配管４に水が流れ、所定の入水流量の検知により給湯用バーナ３１が燃焼を開始し、熱交換器３２で加熱された湯が出湯路３４及び給湯配管４を通して給湯されて給湯栓４１から出湯するようになっている。 The hot water supply circuit 3 includes a hot water supply burner 31, a hot water supply heat exchanger 32 that is heat-exchanged and heated by the combustion heat of the hot water supply burner 31, and a water supply channel that supplies water such as tap water to the heat exchanger 32. 33 and a hot water outlet 34 through which hot water heated from the heat exchanger 32 is discharged. The upstream end of the water supply passage 33 is connected to the downstream end of a water supply source such as a water pipe, and the downstream end of the hot water supply passage 34 is connected to the upstream end of the hot water supply pipe 4. A hot-water tap 41 is connected to the downstream end via a hot-water supply joint 42. When the user opens the hot-water tap 41, water flows through the water supply passage 33, the heat exchanger 32, the hot water supply passage 34, and the hot water supply piping 4, and the hot water supply burner 31 starts to combust by detecting a predetermined incoming water flow rate. Hot water heated by the exchanger 32 is supplied through the hot water supply passage 34 and the hot water supply pipe 4 and discharged from the hot water tap 41.

上記暖房回路５は、暖房用バーナ５１と、この暖房用バーナ５１の燃焼熱により熱交換加熱される暖房用熱交換器５２と、循環ポンプ５３の作動によりタンク５４内の低温水を熱交換器５２に戻す戻り路５５と、戻り路５５により戻された低温水が上記熱交換器５２で加熱されて高温水が熱交換器５２から出湯される往き路５６とを備えている。往き路５６の下流端は複数の分岐路毎に熱動弁が内蔵された往き用ヘッダ７１に連通され、このヘッダ７１に対し暖房端末６ａ〜６ｃ用の暖房配管７ａ〜７ｃ及び給湯即湯用の暖房配管７ｄの各往き管７２が接続されている。上記暖房端末６ａ〜６ｃは例えば各室の床暖房機等により構成され、各暖房端末６ａ〜６ｃでは対応する往き管７２により供給された高温水の熱を放熱し、放熱により低温となった低温水が対応する戻り管７３を通して戻り用ヘッダ７４に戻され、戻り用ヘッダ７４から上記タンク５４に戻されるようになっている。 The heating circuit 5 includes a heating burner 51, a heating heat exchanger 52 that is heat-exchanged and heated by the combustion heat of the heating burner 51, and the low-temperature water in the tank 54 by the operation of the circulation pump 53. A return path 55 that returns to 52 and a forward path 56 through which the low temperature water returned by the return path 55 is heated by the heat exchanger 52 and hot water is discharged from the heat exchanger 52 are provided. The downstream end of the outgoing path 56 communicates with an outgoing header 71 having a built-in thermal valve for each of a plurality of branch paths, and the header 71 is connected to the heating pipes 7a to 7c for the heating terminals 6a to 6c and the hot water supply hot water. Each forward pipe 72 of the heating pipe 7d is connected. The heating terminals 6a to 6c are composed of, for example, floor heaters in each room, and the heating terminals 6a to 6c radiate the heat of the high-temperature water supplied by the corresponding forward pipe 72, and the temperature is lowered by the heat radiation. Water is returned to the return header 74 through the corresponding return pipe 73, and returned from the return header 74 to the tank 54.

又、上記給湯即湯用の暖房配管７ｄは給湯配管４の上流端近傍から給湯栓４１側の下流端までの範囲にわたりその給湯配管４に添った状態に配管され、特にその暖房配管７ｄの内の往き管７２が給湯配管４と互いに接触するように添わされている。そして、暖房配管７ｄの往き管７２の下流端と、戻り管７３の上流端とが本発明に係る配管継手８により連通接続され、この配管継手８は給湯栓４１の付け根部に対し連結固定されている。そして、往き路５６及び往き用ヘッダ７１から暖房配管７ｄの往き管７２に供給された高温水が配管継手８に到達するまでにその高温水の熱が給湯配管４に伝熱され給湯配管４内に滞留している湯水を加温・保温して所定温度以上に維持するようになっている。このような伝熱により低温となった温水は上記配管継手８で戻り管７３に折り返され、この戻り管７３を通して戻り用ヘッダ７４に戻された後にタンク５４に戻される。なお、図１中の符号９は断熱材層であり、この断熱材層９は給湯配管４と、往き管７２及び戻り管７３からなる暖房配管７ｄとの３本の配管を一体に束ねた状態でその外周囲を覆うように取り付けられている。 The heating pipe 7d for hot water and hot water is piped along the hot water supply pipe 4 over a range from the vicinity of the upstream end of the hot water supply pipe 4 to the downstream end on the hot water tap 41 side. The forward pipe 72 is attached so as to be in contact with the hot water supply pipe 4. The downstream end of the forward pipe 72 of the heating pipe 7d and the upstream end of the return pipe 73 are connected in communication by the pipe joint 8 according to the present invention, and this pipe joint 8 is connected and fixed to the base of the hot water tap 41. ing. Then, the hot water supplied from the outgoing path 56 and the outgoing header 71 to the outgoing pipe 72 of the heating pipe 7 d reaches the pipe joint 8, and the heat of the hot water is transferred to the hot water supply pipe 4. The hot and cold water staying in the tank is heated and kept at a predetermined temperature or higher. The hot water having a low temperature due to such heat transfer is folded back to the return pipe 73 by the pipe joint 8, returned to the return header 74 through the return pipe 73, and then returned to the tank 54. In addition, the code | symbol 9 in FIG. 1 is a heat insulating material layer, and this heat insulating material layer 9 is the state which bundled three piping of the hot water supply piping 4 and the heating piping 7d which consists of the outward pipe 72 and the return pipe 73 integrally. It is attached to cover the outside.

次に行き管７２から戻り管７３への折返し部を構成する上記配管継手８について詳細に説明する。図２及び図３に示すように、上記配管継手８は本体部８１と、一対のタケノコ状の継手部８２，８２と、給湯継手４２に対し着脱可能に連結固定するための連結部８３とが一体に形成されたものである。このような配管継手８は合成樹脂を用いた一体成形により好適に形成されるが、例えば真鍮又は銅を用いた鋳造あるいは鋳造にロウ付けを加えた製法によっても形成し得るものである。 Next, the piping joint 8 that constitutes the turning portion from the going pipe 72 to the return pipe 73 will be described in detail. As shown in FIGS. 2 and 3, the pipe joint 8 includes a main body portion 81, a pair of bamboo shoot-like joint portions 82, 82, and a connection portion 83 for detachably connecting to and fixing to the hot water supply joint 42. It is formed integrally. Such a pipe joint 8 is preferably formed by integral molding using a synthetic resin, but can also be formed by casting using, for example, brass or copper, or a manufacturing method in which brazing is added to casting.

上記本体部８１は図例のものは扁平な円柱状の形状に形成され、この本体部８１の周面位置から上記一対の継手部８２，８２が互いに平行にかつ所定間隔を隔てて突出されている。上記一対の継手部８２，８２は、図４にも示すように本体部８１から互いに同じ向きに突出して相隣接して配設されている。各先端部には先端開口８２１と、外周面にたけのこ状の凹凸係合面８２２とが形成されている。そして、各先端部を暖房配管７ｄの往き管７２又は戻り管７３の端部開口内に圧入することにより上記凹凸係合面８２２が往き管７２又は戻り管７３の内面と係合して互いに接続されることになる。すなわち、一方の継手部８２に対し往き管７２の下流端７２１が接続され、他方の継手部８２に対し戻り管７３の上流端７３１が接続されることになる。 The main body 81 is formed in a flat columnar shape in the example shown in the figure, and the pair of joint portions 82 and 82 protrude from the peripheral surface position of the main body 81 in parallel with each other at a predetermined interval. Yes. As shown in FIG. 4, the pair of joint portions 82, 82 protrude from the main body portion 81 in the same direction and are disposed adjacent to each other. A tip opening 821 and a bamboo-like uneven engagement surface 822 are formed on the outer peripheral surface of each tip portion. Then, the concave and convex engagement surfaces 822 are engaged with the inner surfaces of the forward pipe 72 and the return pipe 73 by press-fitting each tip into the end opening of the forward pipe 72 or the return pipe 73 of the heating pipe 7d, and are connected to each other. Will be. That is, the downstream end 721 of the forward pipe 72 is connected to one joint part 82, and the upstream end 731 of the return pipe 73 is connected to the other joint part 82.

上記の両先端開口８２１，８２１はＵの字状の連通路８４（図４参照）を介して互いに連通されている。上記連通路８４は一方の継手部８２内から本体部８１内及び他方の継手部８２内にかけて内部に延びるように形成されている。従って、暖房配管７ｄの往き管７２の下流端７２１と、戻り管７３の上流端７３１とは上記連通路８４を介して互いに連通され、上記連通路８４によって暖房配管７ｄ内を通る温水の流れの向きが逆向きに折り返されることになる。つまり、往き管７２を通って給湯配管４に対し給湯栓４１側（下流側）に流れてきた温水の流れ向きが給湯栓４１位置で逆方向に折り返されて戻り管７３を通して上記給湯配管４の上流側に流れてタンク５４に戻されることになる。 The two end openings 821 and 821 are in communication with each other via a U-shaped communication path 84 (see FIG. 4). The communication passage 84 is formed so as to extend from the inside of one joint portion 82 to the inside of the main body portion 81 and the other joint portion 82. Therefore, the downstream end 721 of the forward pipe 72 of the heating pipe 7d and the upstream end 731 of the return pipe 73 are communicated with each other via the communication path 84, and the flow of hot water passing through the heating pipe 7d is communicated by the communication path 84. The direction will be reversed. That is, the flow direction of the hot water flowing toward the hot-water tap 41 side (downstream side) with respect to the hot-water supply pipe 4 through the forward pipe 72 is folded in the reverse direction at the position of the hot-water tap 41, and the hot-water supply pipe 4 through the return pipe 73. It flows upstream and is returned to the tank 54.

又、上記連結部８３は一対の相対向する半円状のファスナ帯片８３１，８３１からなり、これら一対のファスナ帯片８３１，８３１が上記本体部８１の端面から上記一対の継手部８２，８２と直交する側に突出されている。 The connecting portion 83 includes a pair of opposing semicircular fastener strips 831 and 831, and the pair of fastener strips 831 and 831 extends from the end surface of the main body 81 to the pair of joint portions 82 and 82. It protrudes on the side orthogonal to

上記一対のファスナ帯片８３１，８３１は、開閉方向に弾性変形し得るようになっており、給湯栓４１の基部、又は、給湯栓４１と給湯配管４との接続に用いられる給湯継手４２に対し側方から外嵌装着されることにより配管継手８を給湯栓４１に対し連結固定するように構成されている。つまり、図５（ａ）に示すように一対のファスナ帯片８３１，８３１の相対向面間が上記給湯継手４２又は給湯栓４１の基部（以下「給湯継手４２等」という）の外径よりも僅かに小さく設定され、装着するときには一対のファスナ帯片８３１，８３１の先端開口を給湯継手４２に当てて押し込むことにより上記先端開口が押し開かれて給湯継手４２が上記一対のファスナ帯片８３１，８３１間に入り込み、一対のファスナ帯片８３１，８３１が閉じて給湯継手４２を弾性復元力により挟み付けることになる。 The pair of fastener strips 831 and 831 can be elastically deformed in the opening and closing direction, and with respect to the base of the hot-water tap 41 or the hot-water supply joint 42 used for connecting the hot-water tap 41 and the hot-water supply pipe 4. The pipe joint 8 is configured to be connected and fixed to the hot water tap 41 by being externally fitted from the side. That is, as shown in FIG. 5 (a), the distance between the opposing surfaces of the pair of fastener strips 831 and 831 is larger than the outer diameter of the base of the hot water supply joint 42 or hot water tap 41 (hereinafter referred to as “hot water supply joint 42 etc.”). When set, the tip opening of the pair of fastener strips 831 and 831 is pushed against the hot water supply joint 42 to push the tip opening open, so that the hot water supply joint 42 is connected to the pair of fastener strips 831 and 831, respectively. 831, the pair of fastener strips 831 and 831 are closed, and the hot water supply joint 42 is sandwiched by elastic restoring force.

これにより、上記配管継手８は給湯継手４２等に連結固定されることになり（図２参照；図２では給湯継手４２に接続した例を示す）、連結固定されることにより、配管継手８に接続された往き管７２及び戻り管７３が給湯配管４に対し平行に延びかつ当接状態で添った状態に配設されることになる。つまり、一対の継手部８２，８２及び連結部８３は、配管継手８が連結部８３により給湯継手４２等に連結固定されることによって、一対の継手部８２，８２に接続された往き管７２及び戻り管７３を給湯栓４１又は給湯継手４２に接続された給湯配管４に対し上記の如く平行に延びかつ互いに接触して添った状態に配設することになるように構成されているのである。 As a result, the pipe joint 8 is connected and fixed to the hot water supply joint 42 and the like (see FIG. 2; FIG. 2 shows an example of connection to the hot water supply joint 42). The forward pipe 72 and the return pipe 73 connected to each other extend in parallel to the hot water supply pipe 4 and are attached in a contact state. That is, the pair of joint portions 82 and 82 and the connecting portion 83 are connected to the pair of joint portions 82 and 82 by the pipe joint 8 being fixedly connected to the hot water supply joint 42 or the like by the connecting portion 83. The return pipe 73 is configured to extend in parallel to the hot water supply pipe 4 connected to the hot water tap 41 or the hot water supply joint 42 as described above and to be in contact with each other.

そして、上記の一対のファスナ帯片８３１，８３１間に給湯継手４２（又は給湯栓４１の基部）が挟み付けられた状態では、図５（ａ）に示すように給湯継手４２の外表面と自己開閉弁８５の感熱部８５１とが互いに密着状態で当接するようにされている。この自己開閉弁８５は、感熱作動式の駆動素子Ｗを収納した感熱部８５１と、この感熱部８５１の駆動素子Ｗの作動圧（例えば膨張圧）を受けて図５（ａ）に示す常開位置から同図（ｂ）に示すように上記連通路８４を遮断する閉位置まで前進する弁体８５２とから構成されている。すなわち、上記給湯継手４２等に連結固定されると、その給湯継手４２等の内部の湯水の熱が給湯継手４２等を構成する管壁及びこの管壁に当接した上記感熱部８４１の構成壁を介して伝熱されるようになっており、給湯配管４内の湯水温度が所定温度以上であればその伝熱を受けた駆動素子Ｗの作動圧によって弁体８５２が上記閉位置まで前進作動される一方、上記湯水温度が上記所定温度未満の低温であれば上記駆動素子Ｗは収縮して弁体８５２を上記常開位置側に後退作動させるようになっている。そして、弁体８５２が閉位置に前進作動されると、連通路８４が遮断される結果、暖房配管７ｄの往き路７２から戻り路７３への流れが停止され暖房回路５からの高温の温水循環が停止されることになる。なお、図５中の符号８５３は弁体８５２に対するシール部である。 In the state where the hot water supply joint 42 (or the base of the hot water tap 41) is sandwiched between the pair of fastener strips 831 and 831, as shown in FIG. The heat sensitive part 851 of the on-off valve 85 is in contact with each other in a close contact state. The self-opening / closing valve 85 receives the operating pressure (for example, expansion pressure) of the heat-sensitive part 851 housing the heat-sensitive actuating drive element W and the drive element W of the heat-sensitive part 851 and is normally opened as shown in FIG. As shown in FIG. 5B, the valve body 852 advances from the position to the closed position where the communication passage 84 is blocked. That is, when connected and fixed to the hot water supply joint 42 and the like, the heat of the hot water inside the hot water supply joint 42 and the like constitutes the wall of the hot water supply joint 42 and the wall of the heat sensitive portion 841 that contacts the pipe wall. If the hot water temperature in the hot water supply pipe 4 is equal to or higher than a predetermined temperature, the valve body 852 is moved forward to the closed position by the operating pressure of the drive element W that has received the heat transfer. On the other hand, if the hot / cold water temperature is lower than the predetermined temperature, the drive element W contracts to cause the valve body 852 to retract toward the normally open position. When the valve body 852 is moved forward to the closed position, the communication path 84 is blocked. As a result, the flow from the forward path 72 to the return path 73 of the heating pipe 7d is stopped, and hot water circulation from the heating circuit 5 is performed. Will be stopped. In addition, the code | symbol 853 in FIG. 5 is a seal part with respect to the valve body 852. FIG.

上記の如き駆動素子Ｗとしては、例えば、温度変化に伴う体積膨張・収縮を利用して上記の作動圧として膨張圧を弁体８５２に作用させるワックスサーモ（サーモペレット）、又は、温度変化に伴う形状変化を利用して上記作動圧として押圧力を弁体８５２に作用させる形状記憶合金等が挙げられる。そして、上記駆動素子Ｗは、給湯配管４内の滞留湯水が後述の即湯に必要な温度以上であれば、弁体８５２に作動圧を作用させて閉位置に維持するように、感熱温度と作動圧との関係が設定されている。又、上記弁体８５２は熱の不良導体素材により形成され、暖房配管７ｄの特に往き管７２内の高温の温水の熱を上記の駆動素子Ｗ側に伝熱しないようにされている。又、上記のシール部８５３も上記の温水の伝熱を遮断するように断熱素材により形成されている。もちろん、これらの他に、感熱部８５１に対する上記の温水からの伝熱を遮断するために、感熱部８５１の周囲を断熱材により積極的に遮蔽して給湯継手４２側からの伝熱のみを受けるようにしてもよい。 As the drive element W as described above, for example, a wax thermo (thermo pellet) that causes the expansion pressure to act on the valve body 852 as the above-described operating pressure using volume expansion / contraction associated with temperature change, or accompanying temperature change Examples include shape memory alloys that use a shape change to apply a pressing force to the valve body 852 as the operating pressure. The drive element W has a heat sensitive temperature so that the operating pressure is applied to the valve body 852 and the valve element 852 is maintained in the closed position if the accumulated hot water in the hot water supply pipe 4 is equal to or higher than the temperature required for the hot water described later. The relationship with the working pressure is set. The valve body 852 is formed of a poor heat conductor material so that the heat of the hot water in the heating pipe 7d, particularly in the forward pipe 72, is not transferred to the driving element W side. The seal portion 853 is also formed of a heat insulating material so as to block the heat transfer of the warm water. Of course, in addition to these, in order to block the heat transfer from the hot water to the heat sensitive portion 851, the periphery of the heat sensitive portion 851 is actively shielded by a heat insulating material, and only the heat transfer from the hot water supply joint 42 side is received. You may do it.

以上の配管継手８を用いた配管作業は次のようにして行われる。まず、給湯配管４と、暖房配管７ｄを構成する往き管７２及び戻り管７３との３本の管を例えば断熱材層９の巻き付けなどにより予め束ねたものを用意し、これを給湯器２から既設置の給湯栓４１まで延長して配管する。この時点では上記の往き管７２の下流端と、戻り管７３の上流端とは共に開口した状態になっている。この後、給湯配管４の下流端を給湯栓４１に接続させる。この給湯栓４１との接続は、給湯栓４１が直接接続可能な構造であれば、その給湯栓４１に対し給湯配管４を直接に接続してもよいが、通常は給湯継手４２を介して接続する。この場合の接続作業は、図２に示すように、給湯配管４の下流端の開口内に給湯継手４２のタケノコ状の継手部４２１を圧入して連結した上で、その給湯継手４２の連結部４２２の接合端４２３を給湯栓４１の基端４１１に図示省略のシールパッキンを介して押し当てた状態で袋ナット４２４で締結する。以上により、給湯栓４１に対する給湯配管４の接続が行われる。 The piping work using the above pipe joint 8 is performed as follows. First, a tube in which three pipes of a hot water supply pipe 4 and a forward pipe 72 and a return pipe 73 constituting the heating pipe 7d are bundled in advance by, for example, winding a heat insulating material layer 9 is prepared. The pipe is extended to the existing hot water tap 41. At this point, the downstream end of the forward pipe 72 and the upstream end of the return pipe 73 are both open. Thereafter, the downstream end of the hot water supply pipe 4 is connected to the hot water tap 41. As long as the hot-water tap 41 is connected to the hot-water tap 41, the hot-water supply pipe 4 may be directly connected to the hot-water tap 41. To do. As shown in FIG. 2, the connecting operation in this case is performed by press-fitting a bamboo shoot-like joint portion 421 of the hot water supply joint 42 into the opening at the downstream end of the hot water supply pipe 4, and then connecting the hot water supply joint 42. The joint end 423 of 422 is fastened with the cap nut 424 in a state where the joint end 423 is pressed against the base end 411 of the hot-water tap 41 via a seal packing (not shown). Thus, the hot water supply pipe 4 is connected to the hot water tap 41.

次に、往き管７２及び戻り管７３の両先端、すなわち、往き管７２の下流端及び戻り管７３の上流端を給湯栓４１の近傍の所定位置に位置付けて、配管継手８の一方の継手部８２１を往き管７２の下流端の開口内に、他方の継手部８２１を戻り管７３の上流端の開口内にそれぞれ圧入する。これにより、往き管７２の下流端と、戻り管７３の上流端とを配管継手８（配管継手８の連通路８４）を介して互いに連通させる。しかる後、上記配管継手８の連結部８３を利用して配管継手８を上記給湯継手８３の胴部４２５に連結固定する。すなわち、一対のファスナ帯片８３１，８３１間に上記胴部４２５を押し込んで挟み付けるようにする。 Next, both ends of the forward pipe 72 and the return pipe 73, that is, the downstream end of the forward pipe 72 and the upstream end of the return pipe 73 are positioned at predetermined positions in the vicinity of the hot water tap 41, and one joint portion of the pipe joint 8 is placed. 821 is press-fitted into the opening at the downstream end of the forward pipe 72, and the other joint portion 821 is press-fitted into the opening at the upstream end of the return pipe 73. Accordingly, the downstream end of the forward pipe 72 and the upstream end of the return pipe 73 are communicated with each other via the pipe joint 8 (the communication path 84 of the pipe joint 8). Thereafter, the pipe joint 8 is connected and fixed to the body 425 of the hot water supply joint 83 using the connection part 83 of the pipe joint 8. That is, the body 425 is pushed between the pair of fastener strips 831 and 831 so as to be sandwiched therebetween.

上記の配管継手８の接続により、給湯器２から給湯栓４１までの間に延びる給湯配管４に対し寄り添った状態で配管された往き管７２及び戻り管７３の各先端側を確実に平行に整列させ、かつ、その往き管７２及び戻り管７３の両先端を互いに連通させて暖房配管７ｄの延長先端における折返し部を形成することができる。そして、接続後の配管継手８の給湯栓４１側への連結固定により、配管継手８により構成された暖房配管７ｄの折返し部を給湯継手４２の胴部４２５位置という所定位置に確実に位置付け、かつ、暖房配管７ｄを構成する往き管７２及び戻り管７３の両先端部まで給湯配管４に対し互いに接触させて添わせた状態に配設することができる。 By connecting the pipe joint 8 described above, the distal ends of the forward pipe 72 and the return pipe 73 that are piped in close contact with the hot water supply pipe 4 extending from the hot water heater 2 to the hot water tap 41 are reliably aligned in parallel. In addition, both ends of the forward pipe 72 and the return pipe 73 can be communicated with each other to form a folded portion at the extended front end of the heating pipe 7d. Then, by connecting and fixing the pipe joint 8 after connection to the hot water tap 41 side, the turned-up portion of the heating pipe 7d constituted by the pipe joint 8 is reliably positioned at a predetermined position of the body portion 425 position of the hot water joint 42, and The hot water supply pipe 4 can be disposed in contact with each other up to both ends of the forward pipe 72 and the return pipe 73 constituting the heating pipe 7d.

この状態では給湯器２の暖房回路５の熱交換器５２から高温の温水が往き路５６，往き用ヘッダ７１及び暖房配管７ｄの往き路７２に流れ、往き路７２を折返し部である配管継手８の連通路８４までに到達する間に、往き路７２内の高温の温水の熱が往き路７２の管壁及びこれに接触している給湯配管４の管壁を介して給湯配管４内の滞留湯水に伝熱され、その滞留湯水が所定温度まで加温されて保温されることになる。これにより、給湯栓４１がユーザにより開栓された際に、即座に所定温度以上の湯水を給湯栓４１から出湯させること、つまり即湯させることができる。その際、往き管７２が給湯栓４１まで延ばされているため、給湯配管４の全体に亘り内部滞留湯水の加温・保温を図ることができる。 In this state, high-temperature hot water flows from the heat exchanger 52 of the heating circuit 5 of the water heater 2 to the outgoing path 56, the outgoing header 71, and the outgoing path 72 of the heating pipe 7d. The hot water of the hot water in the outgoing path 72 stays in the hot water supply pipe 4 through the pipe wall of the outgoing path 72 and the pipe wall of the hot water supply pipe 4 that is in contact with the hot water in the outgoing path 72. Heat is transferred to the hot water, and the staying hot water is heated to a predetermined temperature and kept warm. Thereby, when the hot-water tap 41 is opened by the user, hot water having a predetermined temperature or higher can be immediately discharged from the hot-water tap 41, that is, instant hot water can be used. At that time, since the forward pipe 72 is extended to the hot-water tap 41, it is possible to warm and keep the internal accumulated hot water throughout the hot-water supply pipe 4.

しかも、給湯配管４の内部の滞留湯水の温度が上記の即湯機能を発揮する所定温度まで昇温すると、その滞留湯水からの伝熱を感熱部８５１が受けて駆動素子Ｗが作動圧を弁体８５２に作用させて配管継手８内の連通路８４が閉止されることになる。この結果、暖房配管７ｄの往き管７２と戻り管７３との間が遮断されて、暖房配管７ｄを通した温水の循環が停止されることになる。つまり、給湯配管４内の滞留湯水の温度検出や、この温度検出に基づき往き用ヘッダ７１における閉弁制御等の給湯器２の側でのコントローラによる温水循環の切換制御を行うことなく、配管継手８における感熱式の自己開閉弁８５によって給湯配管４の即湯のための循環加熱の実行・停止の切換を自動的に行うことができる。そして、給湯配管４内の滞留湯水の温度が上記の所定温度よりも低下すれば、その温度低下により上記弁体８５２が開位置に復元して温水循環の再開により上記滞留湯水の加温が自動的に再開される。 In addition, when the temperature of the accumulated hot water in the hot water supply pipe 4 rises to a predetermined temperature at which the above-described instant hot water function is exhibited, the heat sensing unit 851 receives heat transfer from the accumulated hot water and the drive element W controls the operating pressure. The communication path 84 in the pipe joint 8 is closed by acting on the body 852. As a result, the connection between the forward pipe 72 and the return pipe 73 of the heating pipe 7d is cut off, and the circulation of hot water through the heating pipe 7d is stopped. That is, without detecting the temperature of the accumulated hot water in the hot water supply pipe 4 or performing the switching control of the hot water circulation by the controller on the side of the hot water heater 2 such as the valve closing control in the forward header 71 based on this temperature detection. The thermal self-opening / closing valve 85 in FIG. 8 can automatically switch between execution and stop of the circulating heating for the hot water in the hot water supply pipe 4. If the temperature of the accumulated hot water in the hot water supply pipe 4 falls below the predetermined temperature, the valve body 852 is restored to the open position by the temperature decrease, and the warm water is automatically heated by resuming the hot water circulation. Will be resumed.

＜他の実施形態＞
なお、本発明は上記実施形態に限定されるものではなく、その他種々の実施形態を包含するものである。すなわち、上記実施形態では、一対の継手部８２，８２間をＵの字状の連通路８４により互いに連通しているが、これに限らず、連通路の形状は円弧状又はコの字状等の如何なる形状であってもよい。 <Other embodiments>
In addition, this invention is not limited to the said embodiment, Other various embodiment is included. That is, in the above-described embodiment, the pair of joint portions 82 and 82 communicate with each other by the U-shaped communication path 84, but the shape of the communication path is not limited to this, and the shape of the communication path is an arc shape or a U-shape. Any shape may be used.

又、連結部８３としては、例えば、一対の半割把持片と、これらの先端を互いに締結する締め付けねじ等の締結手段との組み合わせにより構成してもよい。また更に、その際、このような締結可能な連結部を給湯継手４２の継手部４２１が圧入された給湯配管４の端部外周に取り付けることにより、給湯配管４の抜け止めを兼ねるようにしてもよい。 Moreover, as the connection part 83, you may comprise by a combination of a pair of half gripping pieces and fastening means, such as a fastening screw which fastens these front-end | tips mutually, for example. Further, at that time, such a connectable connecting portion is attached to the outer periphery of the end portion of the hot water supply pipe 4 into which the joint portion 421 of the hot water supply joint 42 is press-fitted so as to prevent the hot water supply pipe 4 from coming off. Good.

さらに、自己開閉弁８５の代わりに、感熱式により弁体を進退作動させて通過流量を変更調整する自己調整弁を配設してもよい。この場合の自己調整弁としては図５の駆動素子Ｗと、この駆動素子Ｗにより進退作動される弁体８５２とで構成し、かつ、その駆動素子Ｗとして、給湯配管側からの伝熱（連結部８３を給湯継手４２に連結する場合には給湯継手４２からの伝熱）の大小に比例した進退作動圧を弁体８５２に対し作用させるもの（例えばワックスサーモ）を採用すればよい。そして、所定の作動開始温度以下の伝熱であれば弁体８５２には進退作動圧を作用させずに弁体８５２は開位置に保持され、伝熱が上記作動開始温度を超えればその超えた温度分に応じて前進側の作動圧を弁体８５２に作用させるように、駆動素子Ｗを設定するようにすればよい。これにより、往き管７２内に供給される温水からの伝熱により給湯配管４内の滞留湯水が加温されて所定温度に近づくと、弁体８５２が前進側に作動されて連通路８４の通路断面積を狭めて通路抵抗が大きくなることにより、温水の通過流量が絞られて加温の度合が小さくなるように変更調整されることになる。つまり、温水の供給・停止を切換えるのではなくて、温水による給湯配管４内の滞留湯水の加温の程度を変更調整することができるようになる。 Furthermore, instead of the self-opening / closing valve 85, a self-regulating valve for changing and adjusting the passing flow rate by moving the valve body forward and backward by a thermal method may be provided. In this case, the self-regulating valve is composed of the driving element W in FIG. 5 and the valve body 852 that is advanced and retracted by the driving element W. As the driving element W, heat transfer from the hot water supply pipe side (connection) When the portion 83 is connected to the hot water supply joint 42, a member (for example, a wax thermo) that applies an advancing / retreating operating pressure proportional to the size of the heat transfer from the hot water supply joint 42 to the valve body 852 may be employed. If the heat transfer is below a predetermined operation start temperature, the valve body 852 is held in the open position without applying an advancing / retreating operation pressure to the valve body 852, and if the heat transfer exceeds the operation start temperature, the valve body 852 has exceeded it. The drive element W may be set so that the forward operating pressure acts on the valve body 852 in accordance with the temperature. As a result, when the hot water in the hot water supply pipe 4 is heated by the heat transfer from the hot water supplied into the forward pipe 72 and approaches a predetermined temperature, the valve body 852 is actuated to the forward side and the passage of the communication passage 84. By narrowing the cross-sectional area and increasing the passage resistance, the passage flow rate of the hot water is reduced and the degree of heating is changed and adjusted. That is, instead of switching the supply / stop of the hot water, it is possible to change and adjust the degree of warming of the accumulated hot water in the hot water supply pipe 4 by the hot water.

本発明の実施形態を適用した給湯器及び配管例を示す模式図である。It is a schematic diagram which shows the water heater and piping example to which embodiment of this invention is applied. 実施形態の配管継手の連結例を示す側面図である。It is a side view which shows the example of a connection of the piping joint of embodiment. 図２の実施形態の斜視図である。FIG. 3 is a perspective view of the embodiment of FIG. 図２の実施形態の一部切欠平面図である。FIG. 3 is a partially cutaway plan view of the embodiment of FIG. 2. 図５（ａ）は図４のＡ−Ａ線からみた一部切欠の矢視図、図５（ｂ）は図５（ａ）の自己開閉弁が閉状態にあるときの部分断面図である。FIG. 5A is a partially cut away arrow view taken along line AA in FIG. 4, and FIG. 5B is a partial cross-sectional view when the self-opening / closing valve in FIG. 5A is in a closed state. .

符号の説明Explanation of symbols

４給湯配管（第３の配管部材）
７ｄ暖房配管
８配管継手
４１給湯栓（第３の配管部材）
４２給湯継手（第３の配管部材）
７２往き管（第１の配管部材）
７３戻り管（第２の配管部材）
８１本体部
８２継手部
８３連結部
８４連通路
８５自己開閉弁（開閉弁）
８５２弁体
Ｗ駆動素子 4 Hot water supply piping (third piping member)
7d Heating piping 8 Piping joint 41 Hot water tap (third piping member)
42 Hot water supply joint (third piping member)
72 Outward pipe (first piping member)
73 Return pipe (second piping member)
81 Body portion 82 Joint portion 83 Connection portion 84 Communication passage 85 Self-open / close valve (open / close valve)
852 Valve element W Drive element

Claims

本体部と、この本体部から互いに隣接して同じ向きに突出する一対の継手部と、上記本体部から上記一対の継手部とは異なる向きに突出する連結部と、上記本体部に形成され上記一対の継手部の一方の先端から他方の先端までの間を連通させる連通路とを一体に備え、
上記一対の継手部は第１及び第２の配管部材の先端開口と接続可能に形成され、上記連結部は第３の配管部材に対し本体部を着脱可能に連結するように形成され、かつ、上記一対の継手部と連結部とは上記本体部が連結されることにより上記継手部に接続された第１及び第２の配管部材を上記第３の配管部材に対し平行に添った状態に配置させるようにその位置関係が設定されている
ことを特徴とする配管継手。 A main body, a pair of joints protruding from the main body adjacent to each other in the same direction, a connecting part protruding from the main body in a direction different from the pair of joints, and the main body formed above. And a communication passage that communicates between one end of the pair of joint portions to the other end;
The pair of joint portions are formed so as to be connectable to the tip openings of the first and second piping members, and the connecting portion is formed so as to detachably connect the main body portion to the third piping member, and The pair of joint portions and the connecting portion are arranged in a state where the first and second piping members connected to the joint portion are connected in parallel to the third piping member by connecting the main body portion. A piping joint characterized in that the positional relationship is set so as to cause

請求項１に記載の配管継手であって、
上記第３の配管部材は給湯栓自体又は給湯栓の基部に接続される給湯継手を含む給湯配管であり、上記連結部はこの給湯配管を外側から挟み込むことにより上記本体部を給湯配管に対し連結するように構成されている、配管継手。 The pipe joint according to claim 1,
The third piping member is a hot-water supply pipe including a hot-water tap itself or a hot-water supply joint connected to the base of the hot-water tap, and the connecting part connects the main body part to the hot-water supply pipe by sandwiching the hot-water supply pipe from the outside. A pipe fitting that is configured to.

請求項１に記載の配管継手であって、
上記連通路にはこの連通路を開閉切換して上記第１の配管部材から第２の配管部材への流れを許容又は遮断する開閉弁が介装されている、配管継手。 The pipe joint according to claim 1,
A pipe joint, wherein the communication path is provided with an open / close valve that switches between opening and closing the communication path to allow or block the flow from the first piping member to the second piping member.

請求項３に記載の配管継手であって、
上記開閉弁は感熱式の自己開閉弁により構成され、
上記自己開閉弁は感熱式の駆動素子と、この駆動素子により作動されて上記連通路を開閉切換する弁体とを備え、上記駆動素子は上記連結部により第３の配管部材と連結された状態でその第３の配管部材から伝熱を受けるように配設されかつ所定温度以上の伝熱を受けて上記弁体を閉位置まで作動させるように構成されている、配管継手。 The pipe joint according to claim 3,
The on-off valve is composed of a heat-sensitive self-opening / closing valve,
The self-opening / closing valve includes a heat-sensitive driving element and a valve body that is operated by the driving element to open / close the communication path, and the driving element is connected to the third piping member by the connecting portion. And a pipe joint which is arranged to receive heat transfer from the third pipe member and is configured to receive the heat transfer at a predetermined temperature or more to operate the valve body to the closed position.

請求項１に記載の配管継手であって、
上記連通路にはこの連通路の通路断面積を変更して上記第１の配管部材から第２の配管部材への通過流量を変更する調整弁が介装されている、配管継手。 The pipe joint according to claim 1,
A pipe joint in which the adjustment valve for changing the passage flow rate from the first pipe member to the second pipe member by changing the cross-sectional area of the communication path is interposed in the communication path.

請求項５に記載の配管継手であって、
上記調整弁は感熱式の自己調整弁により構成され、
上記自己調整弁は感熱式の駆動素子と、この駆動素子により連通路に対し交差するように進退作動されて通路断面積を変更させる弁体とを備え、上記駆動素子は上記連結部により第３の配管部材と連結された状態でその第３の配管部材から伝熱を受けるように配設されかつ伝熱温度に応じて上記弁体を進退作動させるように構成されている、配管継手。 The pipe joint according to claim 5,
The regulating valve is composed of a heat-sensitive self-regulating valve,
The self-regulating valve includes a heat-sensitive drive element and a valve body that is moved back and forth by the drive element so as to intersect the communication path to change the passage cross-sectional area. A pipe joint that is arranged to receive heat transfer from the third pipe member in a state of being connected to the pipe member and is configured to advance and retract the valve body according to the heat transfer temperature.

請求項１に記載の配管継手であって、
上記第１の配管部材は熱源としての温水が供給される往き管であり、上記第２の配管部材は放熱後の温水を戻す戻り管であり、上記連通路により上記往き管から戻り管への温水の折返し部が構成され、
上記第３の配管部材は給湯栓自体又は給湯栓の基部に接続される給湯継手を含む給湯配管であり、
上記連結部によりこの給湯配管に連結されることにより少なくとも上記往き管と給湯配管とが上記往き管から温水の熱が給湯配管に対し伝熱可能な状態に配置されるように構成されている、配管継手。 The pipe joint according to claim 1,
The first piping member is a forward pipe to which hot water as a heat source is supplied, and the second piping member is a return pipe for returning the hot water after heat dissipation, and is connected from the forward pipe to the return pipe by the communication path. The folded part of warm water is configured,
The third piping member is a hot water supply pipe including a hot water tap itself or a hot water supply joint connected to the base of the hot water tap,
By being connected to the hot water supply pipe by the connecting portion, at least the forward pipe and the hot water supply pipe are arranged so that the heat of hot water can be transferred from the forward pipe to the hot water supply pipe. Piping joint.