JP4752452B2 - Water heater - Google Patents

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JP4752452B2
JP4752452B2 JP2005312244A JP2005312244A JP4752452B2 JP 4752452 B2 JP4752452 B2 JP 4752452B2 JP 2005312244 A JP2005312244 A JP 2005312244A JP 2005312244 A JP2005312244 A JP 2005312244A JP 4752452 B2 JP4752452 B2 JP 4752452B2
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hot water
water supply
heat exchanger
heating
circuit
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JP2007120832A (en
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博 北西
龍志 岩本
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、バーナの燃焼熱により加熱する給湯用熱交換器を介して供給される湯水を循環させて複数の負荷側に熱量を供給する1缶多水路の給湯装置に関するものである。   The present invention relates to a hot water supply device for a single can multi-channel that circulates hot water supplied through a hot water supply heat exchanger heated by combustion heat of a burner and supplies heat to a plurality of loads.

従来この種の燃焼装置としては、特許文献1のように、給水路を通して供給される水をバーナの燃焼により加熱して給湯路に給湯する給湯用熱交換器と、入路を通して供給される加熱対象流体を前記バーナの燃焼により加熱して出路に流出する流体用熱交換器とが設けられている給湯装置であって、前記給湯用熱交換器が前記バーナの燃焼排ガスの顕熱を回収する給湯用顕熱熱交換部と、その給湯用顕熱熱交換部よりも前記バーナの燃焼排ガスの流動方向の下流側に配置され、前記バーナの燃焼排ガスの潜熱を回収する給湯用潜熱熱交換部とを備えて構成され、前記流体用熱交換器が、前記バーナの燃焼排ガスの顕熱を回収する流体用顕熱熱交換部と、その流体用顕熱熱交換部よりも前記バーナの燃焼排ガスの流動方向の下流側に配置され、前記バーナの燃焼排ガスの潜熱を回収する流体用潜熱熱交換部とを備えて構成され、前記給湯用顕熱熱交換部と流体用顕熱熱交換部とが、互いに熱伝導する状態で一体的に形成され、かつ、前記給湯用潜熱熱交換部と流体用潜熱熱交換部とが、互いに熱伝導する状態で一体的に形成された給湯装置が開示されている(例えば、特許文献1参照)。
特開2002−267262号公報
Conventionally, as this type of combustion apparatus, as disclosed in Patent Document 1, a hot water supply heat exchanger that heats water supplied through a water supply path by combustion of a burner to supply hot water to the hot water supply path, and heating supplied through an inlet path A hot water supply apparatus provided with a fluid heat exchanger that heats a target fluid by combustion of the burner and flows out to an outlet, and the hot water heat exchanger recovers sensible heat of combustion exhaust gas of the burner A sensible heat exchange unit for hot water supply, and a latent heat heat exchange unit for hot water supply that is disposed downstream of the sensible heat exchange unit for hot water supply in the flow direction of the combustion exhaust gas of the burner and recovers the latent heat of the combustion exhaust gas of the burner The fluid heat exchanger recovers sensible heat of the combustion exhaust gas of the burner, and the combustion exhaust gas of the burner than the fluid sensible heat exchange unit. Arranged downstream of the flow direction of And a fluid latent heat exchange part for recovering the latent heat of the combustion exhaust gas of the burner, and the sensible heat exchange part for hot water supply and the sensible heat exchange part for fluid are integrated in a state of conducting heat to each other. And a hot water supply device in which the latent heat heat exchange part for hot water supply and the latent heat heat exchange part for fluid are integrally formed in a state of conducting heat to each other are disclosed (for example, see Patent Document 1). .
JP 2002-267262 A

しかしながら、前記従来の給湯装置は、バーナで加熱される経路として、給湯用と流体用の2つの経路を形成しているため、配管構成が複雑になるとともに、単独運転時に運転停止側の熱交換器内の残水の沸騰が発生するという課題を有するものであった。   However, since the conventional hot water supply apparatus forms two paths for hot water supply and fluid as the paths heated by the burner, the piping configuration becomes complicated and the heat exchange on the shutdown side during single operation It had the subject that the boiling of the residual water in a container generate | occur | produced.

また、バーナの燃焼ガスの流出経路中に給湯用熱交換器と流体用熱交換器をそれぞれ配置し、前記給湯用熱交換器に給湯用顕熱熱交換部と給湯用潜熱熱交換部を設け、前記流体用熱交換器に流体用顕熱熱交換部と流体用潜熱熱交換部を設けた構成としているため、顕熱熱交換部と潜熱熱交換部にそれぞれ給湯用熱交換器と流体用熱交換器を一体的に形成する必要があり、給湯用熱交換器及び流体用熱交換器として極めて複雑な構成を強いられるものであった。   In addition, a hot water supply heat exchanger and a fluid heat exchanger are respectively disposed in the burner combustion gas outflow path, and the hot water supply heat exchanger is provided with a sensible heat exchange unit for hot water supply and a latent heat exchange unit for hot water supply. The fluid heat exchanger is provided with a sensible heat exchange section for fluid and a latent heat exchange section for fluid, so that the sensible heat exchange section and the latent heat exchange section respectively have a hot water supply heat exchanger and a fluid It is necessary to integrally form the heat exchanger, and the heat exchanger for hot water supply and the heat exchanger for fluid are forced to have extremely complicated configurations.

さらに、上記従来例には開示されていないが、バーナで加熱された湯水を循環し、その循環水を利用して複数の利用回路に熱量を供給するような構成において、断水により水落ち現象が発生し前記循環水がない状態において利用回路から運転要求があった場合、バーナの燃焼が開始され空焚き状態で運転が継続されてしまうため、異常過熱防止装置が作動してしまうという課題を有するものであった。   Furthermore, although not disclosed in the above conventional example, in a configuration in which hot water heated by a burner is circulated and heat is supplied to a plurality of utilization circuits using the circulated water, a water drop phenomenon occurs due to water breakage. When there is an operation request from the utilization circuit in a state where there is no circulating water, the burner starts to burn and the operation is continued in an empty-fired state, so that the abnormal overheat prevention device is activated. It was a thing.

本発明は前記従来の課題を解決するもので、給湯用熱交換器と潜熱回収用熱交換器で1つの加熱経路を形成し、前記加熱経路の循環水を利用して暖房回路や風呂回路に熱量を供給する構成とすることで、前記給湯用熱交換器や潜熱回収用熱交換器に関連しない利用側熱交換器の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供する。また、給湯路を主体とする1つの加熱経路構成における断水による水落ちの検出と安全性の向上を図った給湯装置を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and forms one heating path with a hot water supply heat exchanger and a latent heat recovery heat exchanger, and uses circulating water in the heating path to form a heating circuit or a bath circuit. By adopting a structure for supplying heat, it is possible to configure a use-side heat exchanger that is not related to the heat exchanger for hot water supply and the latent heat recovery heat exchanger. The present invention provides an easy-to-use hot water supply apparatus that prioritizes hot water supply performance by making the heating path a main hot water supply path. It is another object of the present invention to provide a hot water supply apparatus that detects water drop due to water breakage and improves safety in one heating path configuration mainly including a hot water supply path.

前記従来の課題を解決するために、本発明の給湯装置は、給水路より供給される水をバーナの燃焼により加熱し潜熱回収用熱交換器および給湯用熱交換器を介して給湯路に供給するとともに、循環ポンプを介して再度前記給湯用熱交換器に戻して給湯循環回路を形成し、前記給湯循環回路には利用側熱交換器を配設して負荷側に熱量を供給する回路を形成するとともに、前記利用側熱交換器を経由した給湯循環回路から分岐して給湯栓に湯を供給する給湯路と、前記給湯路から分岐して注湯用開閉弁を介し風呂に注湯を行うための注湯回路を形成した1缶多水路の給湯装置であって、前記利用側熱交換器を経由した後の給湯路に分岐するまでの給湯循環回路に流量センサを設け、前記循環ポンプを回転しているにもかかわらず、前記流量センサで所定の流量が検出されなかった場合、前記注湯用開閉弁を開弁し風呂への注湯が行われなければ断水であるものとして、前記循環ポンプを用いた加熱を停止するようにしたものである。   In order to solve the above-mentioned conventional problems, the hot water supply apparatus of the present invention heats the water supplied from the water supply passage by combustion of the burner and supplies the water to the hot water supply passage through the latent heat recovery heat exchanger and the hot water supply heat exchanger. In addition, a hot water supply circulation circuit is formed by returning to the hot water supply heat exchanger again via a circulation pump, and a circuit for supplying a heat amount to the load side by disposing a use side heat exchanger in the hot water supply circulation circuit. A hot water supply path that branches from the hot water supply circulation circuit via the use side heat exchanger and supplies hot water to the hot water tap, and a hot water that branches from the hot water supply path and passes through the hot water on / off valve A hot water supply device for a single can multiple water channel in which a hot water pouring circuit for performing is formed, wherein a flow rate sensor is provided in a hot water supply circulation circuit until it branches to a hot water supply channel after passing through the use side heat exchanger, and the circulation pump In spite of rotating If the predetermined flow rate is not detected, the on / off valve for pouring is opened, and if pouring into the bath is not performed, it is assumed that the water is shut off and heating using the circulation pump is stopped. Is.

これによって、給湯用熱交換器と潜熱回収用熱交換器で1つの加熱経路を形成し、前記加熱経路の循環水を利用して暖房回路や風呂回路に熱量を供給する構成としているため、前記給湯用熱交換器や潜熱回収用熱交換器に関連しない利用側熱交換器の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供することができ、また、給湯路を主体とする1つの加熱経路構成とすることで、単独運転時における熱交換器内の残水沸騰問題を解消している。また、循環ポンプを回転しても所定の循環流量が検出されなかった場合、注湯用開閉弁を開弁し注湯が行われるかどうかを確認し、注湯が行われなければ断水により加熱経路内の水落ち現象が発生したものとして循環ポンプを用いた加熱を停止することで空焚き運転を防止することができ、安全性の向上を図った給湯装置を提供することができる。   Thereby, one heating path is formed by the heat exchanger for hot water supply and the heat exchanger for latent heat recovery, and the heat amount is supplied to the heating circuit and the bath circuit using the circulating water of the heating path. Enables the configuration of the use side heat exchanger that is not related to the hot water supply heat exchanger or the latent heat recovery heat exchanger. It is possible to provide an easy-to-use hot water supply system that prioritizes hot water supply performance by making the route the hot water supply path main body, and heat exchange at the time of single operation by having a single heating path structure mainly made of the hot water supply path Eliminates the problem of residual water boiling in the vessel. Also, if a predetermined circulating flow rate is not detected even when the circulating pump is rotated, the pouring on / off valve is opened to check whether or not pouring is performed. It is possible to prevent the hot watering operation by stopping the heating using the circulation pump on the assumption that the water dropping phenomenon in the path has occurred, and it is possible to provide a hot water supply device that is improved in safety.

本発明の給湯装置は、給湯用熱交換器と潜熱回収用熱交換器で1つの加熱経路を形成し、前記加熱経路内に流量信号が存在するときのみ、前記加熱経路の循環水を利用して暖房回路や風呂回路に熱量を供給する構成とすることで、前記給湯用熱交換器や潜熱回収用熱交換器に関連しない利用側熱交換器の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供することができ、かつ、断水により加熱経路内の水落ち現象が発生した場合、断水による水落ちを検出し、空焚き運転を防止することができ、安全性の向上を図った給湯装置を提供することができる。   The hot water supply apparatus of the present invention forms one heating path with the hot water supply heat exchanger and the latent heat recovery heat exchanger, and uses the circulating water of the heating path only when a flow rate signal exists in the heating path. The configuration of supplying heat to the heating circuit and the bath circuit enables the configuration of the use side heat exchanger not related to the heat exchanger for hot water supply and the latent heat recovery heat exchanger, and the main body configuration including the piping configuration It is possible to provide an easy-to-use hot water supply apparatus that prioritizes hot water supply performance by making the heating path mainly a hot water supply path, and the heating path by water cut-off. When a water drop phenomenon occurs, it is possible to detect a water drop due to water outage, prevent an empty-running operation, and provide a hot water supply device that improves safety.

第1の発明は、給水路より供給される水をバーナの燃焼により加熱し潜熱回収用熱交換器および給湯用熱交換器を介して給湯路に供給するとともに、循環ポンプを介して再度前記給湯用熱交換器に戻して給湯循環回路を形成し、前記給湯循環回路には利用側熱交換器を配設して負荷側に熱量を供給する回路を形成するとともに、前記利用側熱交換器を経由した給湯循環回路から分岐して給湯栓に湯を供給する給湯路と、前記給湯路から分岐して注湯用開閉弁を介し風呂に注湯を行うための注湯回路を形成した1缶多水路の給湯装置であって前記利用側熱交換器を経由した後の給湯路に分岐するまでの給湯循環回路に流量センサを設け、前記循環ポンプを回転しているにもかかわらず、前記流量センサで所定の流量が検出されなかった場合、前記注湯用開閉弁を開弁し風呂への注湯が行われなければ断水であるものとして、前記循環ポンプを用いた加熱を停止するようにしたことを特徴とするものである。   According to a first aspect of the present invention, water supplied from a water supply passage is heated by combustion of a burner and supplied to a hot water supply passage through a latent heat recovery heat exchanger and a hot water supply heat exchanger, and the hot water supply is supplied again through a circulation pump. A hot water supply circulation circuit is formed by returning to the heat exchanger for use, and a use side heat exchanger is provided in the hot water supply circulation circuit to form a circuit for supplying heat to the load side, and the use side heat exchanger is One can that forms a hot water supply path that branches from the hot water supply circulation circuit that passes through and supplies hot water to the hot water tap, and a hot water supply circuit that branches from the hot water supply path and performs pouring into the bath through the on-off valve for pouring A flow rate sensor is provided in a hot water supply circulation circuit until it branches to a hot water supply channel after passing through the use-side heat exchanger and is a multi-water channel hot water supply device. If the specified flow rate is not detected by the sensor, Note the hot water on-off valve as the pouring of the valve opening and the bath is a suspension of water supply to be done, is characterized in that so as to stop the heating with the circulation pump.

そして、給湯用熱交換器と潜熱回収用熱交換器で1つの加熱経路を形成し、前記加熱経路の循環水を利用して暖房回路や風呂回路に熱量を供給する構成としているため、前記給
湯用熱交換器や潜熱回収用熱交換器に関連しない利用側熱交換器の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供することができ、また、給湯路を主体とする1つの加熱経路構成とすることで、単独運転時における熱交換器内の残水沸騰問題を解消している。また、循環ポンプを回転しても所定の循環流量が検出されなかった場合、注湯用開閉弁を開弁し注湯が行われるかどうかを確認し、注湯が行われなければ断水により加熱経路内の水落ち現象が発生したものとして循環ポンプを用いた加熱を停止することで空焚き運転を防止することができ、安全性の向上を図った給湯装置を提供することができる。
And since one heating path is formed by the heat exchanger for hot water supply and the heat exchanger for latent heat recovery, and the amount of heat is supplied to the heating circuit or bath circuit using the circulating water of the heating path, the hot water supply It is possible to configure a heat exchanger on the use side that is not related to a heat exchanger for heat recovery or a heat exchanger for latent heat recovery. It is possible to provide an easy-to-use hot water supply apparatus that prioritizes hot water supply performance by using a hot water supply channel as a main component, and by adopting a single heating path configuration mainly consisting of a hot water supply channel, a heat exchanger during single operation The remaining water boiling problem is solved. Also, if a predetermined circulating flow rate is not detected even when the circulating pump is rotated, the pouring on / off valve is opened to check whether or not pouring is performed. It is possible to prevent the hot watering operation by stopping the heating using the circulation pump on the assumption that the water dropping phenomenon in the path has occurred, and it is possible to provide a hot water supply device that is improved in safety.

第2の発明は、利用側熱交換器として、風呂の追い焚きを行う風呂回路に熱量を供給する風呂用熱交換器として用い、給湯または風呂追い焚きの単独利用、あるいは給湯と風呂追い焚きの同時利用、を選択できるようにしたことを特徴とするもので、給湯用熱交換器と潜熱回収用熱交換器で構成する給湯循環回路を用いて給湯と風呂追い焚きを行うように構成した給湯装置に限定したものであり、給湯と風呂追い焚きを1つの加熱経路で構成することで、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、潜熱回収により効率アップを図ることで給湯性能と風呂追い焚き性能を同時に確保することができる。   The second invention is used as a heat exchanger for a bath that supplies heat to a bath circuit that performs reheating of a bath as a use-side heat exchanger, and can be used alone for hot water supply or bath reheating, or for hot water and bath reheating. Hot water supply that is configured to perform hot water supply and bath replenishment using a hot water circulation circuit consisting of a hot water supply heat exchanger and a latent heat recovery heat exchanger. The system is limited to equipment, and hot water supply and bath chase are configured with a single heating path, which reduces the size and weight of the equipment by simplifying the main body configuration including the piping configuration, and improves the efficiency by collecting latent heat. By improving the temperature, it is possible to ensure both hot water supply performance and bath reheating performance at the same time.

第3の発明は、利用側熱交換器として、暖房や浴室乾燥等を行う暖房装置を有する暖房回路に熱量を供給する暖房用熱交換器と、風呂の追い焚きを行う風呂回路に熱量を供給する風呂用熱交換器を設け、給湯または暖房または風呂追い焚きの単独利用、あるいは給湯と暖房と風呂追い焚きのうち少なくとも2つの同時利用、を選択できるようにしたことを特徴とするもので、給湯用熱交換器と潜熱回収用熱交換器で構成する給湯循環回路を用いて給湯と暖房と風呂追い焚きを行うように構成した給湯装置に限定したものであり、給湯と暖房と風呂追い焚きを1つの加熱経路で構成することで、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、潜熱回収により効率アップを図ることで給湯性能と暖房性能と風呂追い焚き性能を同時に確保することができる。   3rd invention supplies a heat quantity to the heat circuit for heating which supplies a heat quantity to the heating circuit which has a heating apparatus which performs heating, bathroom drying, etc. as a use side heat exchanger, and the bath circuit which retreats a bath A heat exchanger for bath is provided, and it is possible to select a single use of hot water supply or heating or bath reheating, or at least two simultaneous use of hot water supply and heating and reheating bath, It is limited to hot water supply devices that are configured to perform hot water supply, heating, and bath reheating using a hot water supply circulation circuit that consists of a heat exchanger for hot water supply and a heat exchanger for recovering latent heat. By using a single heating path, it is possible to reduce the size and weight of the equipment by simplifying the main body structure including the piping structure, and to improve the efficiency by recovering latent heat, thereby improving hot water supply performance, heating performance, and wind. Reheating performance can be secured simultaneously.

第4の発明は、給水路より供給される水をバーナの燃焼により加熱し潜熱回収用熱交換器および給湯用熱交換器を介して給湯路に供給するとともに、循環ポンプを介して再度前記給湯用熱交換器に戻して給湯循環回路を形成し、前記給湯循環回路には利用側熱交換器を配設して負荷側に熱量を供給する回路を形成するとともに、前記利用側熱交換器を経由した給湯循環回路から分岐して給湯栓に湯を供給する給湯路と、前記給湯循環回路または、前記給湯路から分岐して排水用開閉弁を介し排水口等に接続される排水回路を形成した1缶多水路の給湯装置であって、前記利用側熱交換器を経由した後の給湯路に分岐するまでの給湯循環回路に流量センサを設け、前記循環ポンプを回転しているにもかかわらず、前記流量センサで所定の流量が検出されなかった場合、前記排水用開閉弁を開弁し排水が行われなければ断水であるものとして、前記循環ポンプを用いた加熱を停止するようにしたことを特徴とするものである。   According to a fourth aspect of the present invention, water supplied from a water supply passage is heated by combustion of a burner and supplied to a hot water supply passage through a latent heat recovery heat exchanger and a hot water supply heat exchanger, and the hot water supply is supplied again through a circulation pump. A hot water supply circulation circuit is formed by returning to the heat exchanger for use, and a use side heat exchanger is provided in the hot water supply circulation circuit to form a circuit for supplying heat to the load side, and the use side heat exchanger is A hot water supply passage that branches off from the hot water supply circulation circuit that passes through and supplies hot water to the hot water tap, and a drainage circuit that branches off from the hot water supply circulation circuit or that is branched from the hot water supply passage and connected to a drain outlet or the like via a drain on-off valve Although the water heater is a single-can multi-water channel, a flow rate sensor is provided in the hot water circulation circuit until it branches to the hot water channel after passing through the use side heat exchanger, and the circulation pump is rotated. The predetermined flow rate is If not issued, as the opened drainage on-off valve drainage is water outage to be done, it is characterized in that so as to stop the heating with the circulation pump.

そして、給湯用熱交換器と潜熱回収用熱交換器で1つの加熱経路を形成し、前記加熱経路の循環水を利用して暖房回路や風呂回路に熱量を供給する構成としているため、前記給湯用熱交換器や潜熱回収用熱交換器に関連しない利用側熱交換器の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供することができ、また、給湯路を主体とする1つの加熱経路構成とすることで、単独運転時における熱交換器内の残水沸騰問題を解消している。また、循環ポンプを回転しても所定の循環流量が検出されなかった場合、排水用開閉弁を開弁し排水が行われるかどうかを確認し、排水が行われなければ断水により加熱経路内の水落ち現象が発生したものとして循環ポ
ンプを用いた加熱を停止することで空焚き運転を防止することができ、安全性の向上を図った給湯装置を提供することができる。
And since one heating path is formed by the heat exchanger for hot water supply and the heat exchanger for latent heat recovery, and the amount of heat is supplied to the heating circuit or bath circuit using the circulating water of the heating path, the hot water supply It is possible to configure a heat exchanger on the use side that is not related to a heat exchanger for heat recovery or a heat exchanger for latent heat recovery. It is possible to provide an easy-to-use hot water supply apparatus that prioritizes hot water supply performance by using a hot water supply channel as a main component, and by adopting a single heating path configuration mainly consisting of a hot water supply channel, a heat exchanger during single operation The remaining water boiling problem is solved. If the specified circulation flow rate is not detected even when the circulation pump is rotated, the drainage on-off valve is opened to check whether or not drainage is performed. It is possible to prevent hot watering operation by stopping the heating using the circulation pump as the occurrence of a water drop phenomenon, and it is possible to provide a hot water supply device that is improved in safety.

第5の発明は、利用側熱交換器として、暖房や浴室乾燥等を行う暖房装置を有する暖房回路に熱量を供給する暖房用熱交換器として用い、給湯または暖房の単独利用、あるいは給湯と暖房の同時利用、を選択できるようにしたことを特徴とするもので、給湯用熱交換器と潜熱回収用熱交換器で構成する給湯循環回路を用いて給湯と暖房を行うように構成した給湯装置に限定したものであり、給湯と暖房を1つの加熱経路で構成することで、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、潜熱回収により効率アップを図ることで給湯性能と暖房性能を同時に確保することができる。   5th invention is used as a heat exchanger for a heating which supplies an amount of heat to a heating circuit which has a heating device which performs heating, bathroom drying, etc. as a use side heat exchanger, and uses hot water supply or heating alone, or hot water supply and heating Hot water supply device configured to perform hot water supply and heating using a hot water circulation circuit composed of a hot water supply heat exchanger and a latent heat recovery heat exchanger. By configuring the hot water supply and heating with a single heating path, the main body structure including the piping structure can be simplified to reduce the size and weight of the appliance, and to improve the efficiency by collecting latent heat. Therefore, hot water supply performance and heating performance can be secured at the same time.

第6の発明は、給湯装置をコントロールするリモートコントロール装置を備え、断水が検出され、循環ポンプを用いた加熱が停止されている間は、前記リモートコントロール装置に断水中であることを表す表示を行うようにしたことを特徴とするもので、使用者に対し暖房や追い焚きという循環ポンプを用いた加熱ができない理由が器具の故障ではないことを知らせることができ、不要なメンテナンスの要求を減らすことができる。
6th invention is equipped with the remote control apparatus which controls a hot-water supply apparatus, and while the water cutoff is detected and the heating using a circulation pump is stopped, the display showing that the said remote control apparatus is under water is displayed. This is characterized by the fact that it is possible to inform the user that the reason why heating using a circulating pump such as heating or reheating is not a failure of the equipment is to reduce unnecessary maintenance requirements. be able to.

第7の発明は、給水路に設けた流量センサを備え、断水が検出され、循環ポンプを用いた加熱が停止されている間に、前記給水路の流量センサにて所定の流量が検出された場合には、断水が解除されたものとして循環ポンプを用いた加熱を再び行えるようにしたことを特徴とするもので、断水の解除後自動的に安全に器具を復帰させることができ、不要なメンテナンスの要求を減らすことができるとともに、使用者の利便性を向上することができる。 7th invention is equipped with the flow sensor provided in the water supply path, and the water flow was detected, and while the heating using the circulation pump was stopped, the predetermined flow rate was detected with the flow sensor of the water supply path In such a case, it is characterized in that heating using a circulation pump can be performed again as if water breakage has been released, and the equipment can be automatically and safely restored after the water breakage is released, which is unnecessary. Maintenance demands can be reduced and user convenience can be improved.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、本実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(実施の形態1)
図1は、本発明の第1の実施の形態における給湯装置の構造図を示すものである。
(Embodiment 1)
FIG. 1 shows a structural diagram of a hot water supply apparatus according to a first embodiment of the present invention.

図1において、まず給水路1より供給される水をバーナ2の燃焼により加熱し所定の温度に上昇した後、給湯路に供給し、利用側熱交換器である暖房用熱交換器18と風呂用熱交換器27の一次側経路を経由した後、循環ポンプ17を介して再度給水路1に合流させて給湯循環回路19を形成している。そして、暖房用熱交換器18と風呂用熱交換器27を経由した後の給湯循環回路19から分岐させて給湯路3を形成し、この給湯路3と給水路1を連通して形成したバイパス通路4から給水路1より供給される水の一部をバイパス制御弁5を介して供給することで所望の湯水に調整し、給湯栓6より出湯する給湯路を構成している。   In FIG. 1, first, water supplied from a water supply channel 1 is heated by combustion of a burner 2 to rise to a predetermined temperature, and then supplied to a hot water supply channel, and a heating heat exchanger 18 that is a use side heat exchanger and a bath. After passing through the primary path of the heat exchanger 27 for heat, the hot water supply circulation circuit 19 is formed by joining again with the water supply path 1 via the circulation pump 17. Then, a hot water supply path 3 is formed by branching from the hot water supply circulation circuit 19 after passing through the heat exchanger 18 for heating and the heat exchanger 27 for bath, and the bypass formed by communicating the hot water supply path 3 and the water supply path 1. A part of the water supplied from the water supply path 1 from the passage 4 is supplied via the bypass control valve 5 to adjust to a desired hot water, and a hot water supply path for discharging hot water from the hot water tap 6 is configured.

ここで、バーナ2はガス元電磁弁7、ガス比例弁8、ガス切替弁9が配設されたガス供給路10より燃料が供給され、燃焼用ファン11より燃焼用空気が供給されて、予め定められたシーケンスに従い燃焼動作が行われる。そして、バーナ2の燃焼により発生する燃焼ガスは燃焼室12を通って排気通路13を経由し排気口14から器具外に排出される。   Here, the burner 2 is supplied with fuel from a gas supply passage 10 provided with a gas source solenoid valve 7, a gas proportional valve 8, and a gas switching valve 9, and supplied with combustion air from a combustion fan 11, in advance. A combustion operation is performed according to a predetermined sequence. Then, the combustion gas generated by the combustion of the burner 2 passes through the combustion chamber 12, passes through the exhaust passage 13, and is discharged out of the instrument from the exhaust port 14.

この燃焼ガスの排気経路に燃焼ガスの顕熱を回収する給湯用熱交換器15と燃焼排ガスの潜熱を回収する潜熱回収用熱交換器16を配設している。具体的には、バーナ2の下流側燃焼室12に給湯用熱交換器15を設け、その下流側排気通路13に潜熱回収用熱交換器16を設け、前記給水路1より供給される水を、まず潜熱回収用熱交換器16に供給し燃焼排ガス中の潜熱を回収したのち、給湯用熱交換器15に供給しバーナ2の燃焼により所定の高温水に上昇させて給湯路3に供給する。このように従来の給湯用熱交換器15に
よる熱回収に加え、燃焼排ガスの潜熱を回収する潜熱回収用熱交換器16を設けることで、総合的な熱効率を高め省エネを図るものである。
A hot water supply heat exchanger 15 that recovers sensible heat of the combustion gas and a latent heat recovery heat exchanger 16 that recovers the latent heat of the combustion exhaust gas are disposed in the exhaust path of the combustion gas. Specifically, a hot water supply heat exchanger 15 is provided in the downstream combustion chamber 12 of the burner 2, a latent heat recovery heat exchanger 16 is provided in the downstream exhaust passage 13, and water supplied from the water supply passage 1 is supplied. First, after supplying the latent heat recovery heat exchanger 16 to recover the latent heat in the combustion exhaust gas, the latent heat is supplied to the hot water supply heat exchanger 15, heated to a predetermined high temperature water by combustion of the burner 2, and supplied to the hot water supply passage 3. . Thus, in addition to heat recovery by the conventional hot water supply heat exchanger 15, by providing the latent heat recovery heat exchanger 16 for recovering the latent heat of the combustion exhaust gas, the overall thermal efficiency is improved and energy saving is achieved.

暖房回路20は、暖房用熱交換器18の2次側に放熱機21等の負荷を接続して閉回路を形成し、暖房用循環ポンプ22で循環させることにより、前記暖房用熱交換器18で給湯循環回路19より供給される高温水と熱交換して暖房熱量を確保するようにしている。   The heating circuit 20 is connected to a load such as a radiator 21 on the secondary side of the heating heat exchanger 18 to form a closed circuit, and is circulated by the heating circulation pump 22, whereby the heating heat exchanger 18. Thus, heat is exchanged with the high-temperature water supplied from the hot water supply circuit 19 so as to ensure the amount of heating heat.

風呂回路28は風呂用循環ポンプ29、水量検知部30を通って浴槽31の湯を風呂用熱交換器27に供給し所定時間循環させることにより、前記風呂用熱交換器27で給湯循環回路19より供給される高温水と熱交換して浴槽水の追い焚きを行う。   The bath circuit 28 supplies the hot water in the bathtub 31 to the bath heat exchanger 27 through the bath circulation pump 29 and the water amount detection unit 30 and circulates it for a predetermined time. Heat is exchanged with high-temperature water supplied from the water to reclaim the bath water.

また、浴槽31へ湯張りを行う注湯回路32として、バイパス通路4の下流側の給湯路3から分岐し注湯用開閉弁34を介し風呂回路28に連通する経路を形成している。   Further, as the pouring circuit 32 for filling the bathtub 31 with hot water, a path is formed that branches from the hot water supply path 3 on the downstream side of the bypass passage 4 and communicates with the bath circuit 28 via the pouring open / close valve 34.

以上のように構成された燃焼装置について、以下その動作、作用を説明する。   About the combustion apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

まず、給湯運転時には、給湯栓6を開くと給水路1に配設した給水側流量センサ23が通水を検知し、この通水信号で燃焼用ファン11が動作し同時にガス元電磁弁7、ガス比例弁8が開き、バーナ2に燃料と燃焼用空気が供給されて着火動作により燃焼が開始する。このバーナ2の燃焼開始により発生した燃焼ガスは燃焼室12から排気通路13を経由して排気口14より排出される。この燃焼ガスの排気動作の過程において燃焼室12に配設した給湯用熱交換器15と排気通路13に配設した潜熱回収用熱交換器16で給水路1より供給される水が加熱される。   First, at the time of hot water supply operation, when the hot water tap 6 is opened, the water supply side flow rate sensor 23 disposed in the water supply passage 1 detects water flow, and the combustion fan 11 is operated by this water flow signal and simultaneously the gas source solenoid valve 7, The gas proportional valve 8 is opened, fuel and combustion air are supplied to the burner 2, and combustion is started by an ignition operation. Combustion gas generated by the start of combustion of the burner 2 is discharged from the exhaust port 14 via the exhaust passage 13 from the combustion chamber 12. In the process of exhausting the combustion gas, the water supplied from the water supply passage 1 is heated by the hot water supply heat exchanger 15 disposed in the combustion chamber 12 and the latent heat recovery heat exchanger 16 disposed in the exhaust passage 13. .

給湯用熱交換器15で加熱された湯水は、前記給湯用熱交換器15と潜熱回収用熱交換器16を迂回するように給水路1と給湯路3を連通して設けたバイパス通路4に配設したバイパス制御弁5により入水側の水と混合される。混合された湯は遠隔操作用リモコン24で設定した給湯設定温度になるよう出湯サーミスター25の信号によりバイパス制御弁5の開度を調整し、給湯接続口26を経て給湯栓6より給湯される。   Hot water heated by the hot water supply heat exchanger 15 passes through a bypass passage 4 provided in communication between the water supply passage 1 and the hot water supply passage 3 so as to bypass the hot water supply heat exchanger 15 and the latent heat recovery heat exchanger 16. The bypass control valve 5 is mixed with the water on the incoming side. The opening of the bypass control valve 5 is adjusted by a signal from the hot water thermistor 25 so that the mixed hot water reaches a hot water supply set temperature set by the remote control remote controller 24, and hot water is supplied from the hot water tap 6 through the hot water connection port 26. .

このように、給湯単独運転を選択する場合は、遠隔操作用リモコン24で所望の温度を設定し給湯栓6を開くことで自動的に設定された湯温の湯水を確保することができる。   Thus, when selecting the hot water supply independent operation, the hot water set automatically can be secured by setting a desired temperature with the remote control remote controller 24 and opening the hot water tap 6.

暖房運転時には、放熱機21の運転指令で、暖房回路20に設けた暖房用循環ポンプ22が駆動し、連動して給湯循環回路19の温水を循環させるポンプ17が駆動することによりバーナ2に着火し、燃焼された熱を回収する給湯用熱交換器15で加熱された温水は暖房用熱交換器18で熱交換され暖房回路20へ伝熱される。暖房用熱交換器18で受熱した暖房回路20の熱は、放熱機21で温風として放熱される。   During the heating operation, the heating circulation pump 22 provided in the heating circuit 20 is driven by the operation command of the radiator 21, and the pump 17 that circulates the hot water in the hot water supply circulation circuit 19 is driven in conjunction with it to ignite the burner 2. Then, the hot water heated by the hot water supply heat exchanger 15 that recovers the burned heat is heat-exchanged by the heating heat exchanger 18 and transferred to the heating circuit 20. Heat of the heating circuit 20 received by the heating heat exchanger 18 is radiated as warm air by the radiator 21.

また、風呂運転時には、遠隔操作用リモコン24の運転指令で、風呂回路28に設けた風呂用循環ポンプ29が駆動し水流検知部30にて循環が検知されると、連動して給湯循環回路19の温水を循環させるポンプ17が駆動することによりバーナ2に着火し、燃焼された熱を回収する給湯用熱交換器15で加熱された温水は風呂用熱交換器27で熱交換され風呂回路28へ伝熱される。風呂用熱交換器27で受熱した風呂回路28の熱は、浴槽31へ循環し追い焚き加熱される。   Further, during bath operation, when the bath circulation pump 29 provided in the bath circuit 28 is driven by the operation command of the remote control remote controller 24 and the circulation is detected by the water flow detection unit 30, the hot water supply circulation circuit 19 is interlocked. When the pump 17 that circulates the hot water is driven, the burner 2 is ignited, and the hot water heated by the hot water heat exchanger 15 that recovers the burned heat is heat-exchanged by the bath heat exchanger 27 and the bath circuit 28 Heat is transferred to. The heat of the bath circuit 28 received by the bath heat exchanger 27 is circulated to the bathtub 31 and reheated.

また、暖房と風呂同時運転時には、放熱機21と遠隔操作用リモコン24からの運転指令により、暖房回路20と風呂回路28のポンプ22、29が駆動しバーナ2の着火動作により燃焼が開始する。この燃焼により給湯循環回路19の循環水は潜熱回収用熱交換器16と給湯用熱交換器15で加熱され所定の高温水の状態を維持しながら循環する。この
高温の循環水は暖房用熱交換器18と風呂用熱交換器27に略同一の温度で供給され、暖房回路20と風呂回路28に伝熱される。
Further, during heating and bath simultaneous operation, the heating circuits 20 and the pumps 22 and 29 of the bath circuit 28 are driven by the operation commands from the radiator 21 and the remote control remote controller 24, and combustion is started by the ignition operation of the burner 2. By this combustion, the circulating water in the hot water supply circuit 19 is heated by the latent heat recovery heat exchanger 16 and the hot water heat exchanger 15 and circulates while maintaining a predetermined high-temperature water state. This high-temperature circulating water is supplied to the heating heat exchanger 18 and the bath heat exchanger 27 at substantially the same temperature, and is transferred to the heating circuit 20 and the bath circuit 28.

このように、利用側熱交換器である暖房用熱交換器18および風呂用熱交換器27を経由した後の給湯循環回路19から給湯路3を分岐した構成とすることで、利用側負荷の運転に必要な高温水を確保しつつ、給湯路に対して高温水から低温水まで幅広い範囲の湯水を調節して供給することが可能な給湯優先動作を確保することができる。   In this way, by using a configuration in which the hot water supply path 3 is branched from the hot water supply circulation circuit 19 after passing through the heating heat exchanger 18 and the bath heat exchanger 27 that are the use side heat exchangers, Hot water supply priority operation that can adjust and supply hot water in a wide range from high temperature water to low temperature water to the hot water supply path can be ensured while securing high temperature water necessary for operation.

ここで、燃焼排ガスの潜熱を回収する潜熱回収用熱交換器16は、排ガス経路に対して給湯用熱交換器15の下流側に位置させ、給水経路に対して給湯用熱交換器15の上流側に位置させて設けており、潜熱回収熱交換器16で予熱された湯水を給湯用熱交換器15で加熱するようにしている。これによりバーナ2の燃焼で発生した熱量を効率よく熱交換することができ省エネにつながる。   Here, the latent heat recovery heat exchanger 16 that recovers the latent heat of the combustion exhaust gas is located downstream of the hot water supply heat exchanger 15 with respect to the exhaust gas path, and is upstream of the hot water supply heat exchanger 15 with respect to the water supply path. The hot water preheated by the latent heat recovery heat exchanger 16 is heated by the hot water supply heat exchanger 15. As a result, the amount of heat generated by the combustion of the burner 2 can be efficiently exchanged, leading to energy saving.

注湯運転時には、遠隔操作用リモコン24からの運転指令で注湯用開閉弁34を開弁し、遠隔操作用リモコン24で設定されている風呂用温度の湯を給湯運転時と同様に調整し、遠隔操作用リモコン24で設定されている量だけ注湯回路32から風呂回路28を経て浴槽31に供給することで、自動的に所望の温度と量の湯を浴槽に張ることができる。   During the pouring operation, the pouring on / off valve 34 is opened by an operation command from the remote operation remote control 24, and the bath temperature hot water set by the remote operation remote control 24 is adjusted in the same way as during the hot water supply operation. By supplying the hot water from the pouring circuit 32 to the bathtub 31 through the bath circuit 28 by an amount set by the remote control remote control 24, hot water having a desired temperature and amount can be automatically applied to the bathtub.

また、暖房用熱交換器18および風呂用熱交換器27を経由した後の給湯路3と分岐するまでの給湯循環回路19の途中に循環量を検出する給湯流量センサ33を設けてあり、この給湯流量センサ33から所定の流量信号が出力されているときのみ、バーナ2の燃焼動作を行うようにしている。つまり、前記給湯流量センサ33は給湯循環回路19内に湯水が存在しないか循環が行われていない状態でバーナ2の燃焼動作が行われることを防止する、いわゆる空焚き燃焼を未然に防止するために設けたものである。   Further, a hot water supply flow rate sensor 33 for detecting a circulation amount is provided in the middle of the hot water supply circulation circuit 19 until it branches off from the hot water supply passage 3 after passing through the heat exchanger 18 for heating and the heat exchanger 27 for bath. Only when a predetermined flow rate signal is output from the hot water supply flow rate sensor 33, the combustion operation of the burner 2 is performed. In other words, the hot water supply flow rate sensor 33 prevents the so-called air-burning combustion, which prevents the burner 2 from performing a combustion operation when hot water is not present in the hot water supply circulation circuit 19 or is not circulated. Is provided.

ここで、循環ポンプ17を回転させているにもかかわらず給湯流量センサ33から所定の流量信号が出力されない要因としては循環ポンプ17の故障や給湯流量センサ33の故障、給湯循環回路19の破裂などさまざまなものが考えられる。このような状況になった場合にはメンテナンスを呼び修理を行わなければ器具を復旧することはできない。しかし、断水時に給湯栓6が開栓されると給湯循環回路19内の湯水は給湯路3から抜け落ちて空の状態となるが、断水が復帰すれば再び水が満たされ運転可能となりメンテナンスを呼ばなくても器具は復旧される。   Here, factors that cause the predetermined flow rate signal not to be output from the hot water supply flow rate sensor 33 even when the circulation pump 17 is rotated include a failure of the circulation pump 17, a failure of the hot water supply flow rate sensor 33, and a rupture of the hot water supply circulation circuit 19. Various things are possible. In such a situation, the appliance cannot be restored without calling for maintenance and repairing. However, when the hot water tap 6 is opened at the time of water shutoff, the hot water in the hot water supply circulation circuit 19 falls out of the hot water supply passage 3 and becomes empty. Without it, the instrument is restored.

そこで、本発明では、暖房運転や追い焚き運転の指示が行われ循環ポンプ17が動作を開始したにもかかわらず、給湯流量センサ33から所定の流量信号が出力されない場合には、一旦注湯用開閉弁34を開弁し、給水側流量センサ23から流量信号が出力されるかを確認し、流量信号が出力されなかった場合には断水により給湯循環回路19内の湯水が抜け落ちたと判断して他の要因とは区別するようにしたものである。そして暖房や追い焚きが使用できない要因が断水によるものであることを表す表示(例えばエラーコード番号など)を遠隔操作用リモコン24に行い使用者に器具の故障でないことを知らせるようにしている。要因が断水以外である場合には断水時とは異なる表示を遠隔操作用リモコン24に行い器具の故障であることを使用者に知らせるようにしている。   Therefore, in the present invention, when a predetermined flow rate signal is not output from the hot water supply flow rate sensor 33 even though the instruction of the heating operation or the reheating operation is performed and the circulation pump 17 starts the operation, once for pouring water The on-off valve 34 is opened and it is confirmed whether or not a flow rate signal is output from the water supply side flow rate sensor 23. If the flow rate signal is not output, it is determined that the hot water in the hot water supply circulation circuit 19 has fallen off due to water interruption. It is intended to be distinguished from other factors. Then, a display (for example, an error code number) indicating that the factor that cannot be used for heating and reheating is due to water stoppage is displayed on the remote control remote controller 24 to notify the user that the instrument is not in failure. When the cause is other than the water stoppage, a display different from that at the time of the water stoppage is displayed on the remote control remote control 24 so as to notify the user that the instrument is out of order.

また、断水が解除された場合、使用者が給湯栓6を開き所定の流量(例えば1L/分など)以上の流量が流れると給水側流量センサ23から流量信号が出力され通水が検出される。これにより断水が解除されたと判断でき、給湯循環回路19にも再び水が満たされ暖房、追い焚き運転が可能となるため、遠隔操作用リモコン24に表示している断水により暖房、追い焚き運転が使用できないことを表す表示を消すとともに、暖房、追い焚き運転を受け付ける通常状態に戻すようにしている。   Further, when the water cutoff is released, when the user opens the hot-water tap 6 and a flow rate equal to or higher than a predetermined flow rate (for example, 1 L / min) flows, a flow rate signal is output from the water supply side flow rate sensor 23 and water flow is detected. . Accordingly, it can be determined that the water break has been released, and the hot water supply circulation circuit 19 is again filled with water, so that heating and reheating operation can be performed. Therefore, heating and reheating operation can be performed by water breakage displayed on the remote control 24 for remote operation. The display indicating that it cannot be used is turned off, and it is returned to the normal state in which heating and chasing operation are accepted.

以上のように本実施の形態においては、給湯用熱交換器15と潜熱回収用熱交換器16で1つの加熱経路を形成し、前記加熱経路の循環水を利用して利用側負荷回路である暖房回路20と風呂回路28に熱量を供給する構成としているため、前記給湯用熱交換器15や潜熱回収用熱交換器16に関連しない利用側熱交換器である暖房用熱交換器18と風呂用熱交換器27の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供することができ、また、給湯路を主体とする1つの加熱経路構成とすることで、単独運転時における熱交換器内の残水沸騰問題を解消している。また、循環ポンプ17を回転しても所定の循環流量が検出されなかった場合、注湯用開閉弁34を開弁し注湯が行われるかどうかを確認し、注湯が行われなければ断水により加熱経路内の水落ち現象が発生したものとして循環ポンプ17を用いた加熱を停止することで空焚き運転を防止することができ、安全性の向上を図った給湯装置を提供することができる。さらに、循環ポンプ17を用いた加熱(暖房、追い焚き運転)が停止している要因が断水であることを遠隔操作用リモコン24に表示することで器具の故障ではないことを使用者に知らせることができ、断水復帰を給湯栓6からの通水により検出し器具を自動復帰させることで、不要なメンテナンスの要求を減らすことができるとともに、使用者の利便性向上を図った給湯装置を提供することができる。   As described above, in the present embodiment, one heating path is formed by the hot water supply heat exchanger 15 and the latent heat recovery heat exchanger 16, and the use side load circuit utilizes the circulating water of the heating path. Since the amount of heat is supplied to the heating circuit 20 and the bath circuit 28, the heating heat exchanger 18 and the bath, which are the use-side heat exchangers not related to the hot water heat exchanger 15 and the latent heat recovery heat exchanger 16, are used. The heat exchanger 27 can be configured, and the main body configuration including the piping configuration can be simplified to reduce the size and weight of the appliance, and the heating path is mainly used for the hot water supply path, giving priority to hot water supply performance. The hot water supply apparatus can be provided, and the problem of residual water boiling in the heat exchanger during single operation is eliminated by adopting a single heating path configuration mainly including the hot water supply path. If a predetermined circulation flow rate is not detected even when the circulation pump 17 is rotated, the pouring on / off valve 34 is opened to check whether or not pouring is performed. Therefore, it is possible to prevent the idling operation by stopping the heating using the circulation pump 17 as the occurrence of the water drop phenomenon in the heating path, and it is possible to provide a hot water supply device that improves safety. . Furthermore, the user is informed that it is not a malfunction of the appliance by displaying on the remote control remote control 24 that the cause of the stoppage of heating (heating, reheating operation) using the circulation pump 17 is water outage. A water heater that can reduce unnecessary maintenance and reduce the need for unnecessary maintenance by automatically detecting the water return from the hot water tap 6 and returning the appliance is provided. be able to.

(実施の形態2)
図2は、本発明の第2の実施の形態における給湯装置の構造図を示すものである。
(Embodiment 2)
FIG. 2 is a structural diagram of a hot water supply apparatus according to the second embodiment of the present invention.

本実施の形態は、第1の実施の形態における給湯装置の利用側熱交換器として、暖房や浴室乾燥等を行う放熱機21を有する暖房回路20に熱量を供給する暖房用熱交換器18のみを用い、風呂用熱交換器27と浴槽31への注湯を行う注湯回路32をなくした風呂機能のないタイプの給湯装置に関するものである。なお、第1の実施の形態と同一符号のものは同一構造を有し、説明は省略する。   In the present embodiment, only the heating heat exchanger 18 that supplies heat to the heating circuit 20 having the radiator 21 that performs heating, bathroom drying, and the like is used as the use-side heat exchanger of the hot water supply apparatus in the first embodiment. The present invention relates to a hot water supply device of a type having no bath function, in which a hot water supply circuit 32 for pouring hot water into a bath heat exchanger 27 and a bathtub 31 is eliminated. In addition, the thing of the same code | symbol as 1st Embodiment has the same structure, and abbreviate | omits description.

排水回路35はバイパス通路4の下流側の給湯路3から分岐し排水用開閉弁36を介し排水口に連通する経路を形成している。   The drain circuit 35 diverges from the hot water supply path 3 on the downstream side of the bypass passage 4 and forms a path that communicates with the drain port via the drain on / off valve 36.

次にその動作、作用を説明すると、暖房運転時には、放熱機21の運転指令で、暖房回路20に設けた暖房用循環ポンプ22が駆動し、連動して給湯循環回路19の温水を循環させるポンプ17が駆動することによりバーナ2に着火し、燃焼された熱を回収する給湯用熱交換器15で加熱された温水は暖房用熱交換器18で熱交換され暖房回路20へ伝熱される。暖房用熱交換器18で受熱した暖房回路20の熱は、放熱機21で温風として放熱される。   Next, the operation and action will be described. During the heating operation, the heating circulation pump 22 provided in the heating circuit 20 is driven by the operation command of the radiator 21 and the hot water in the hot water supply circulation circuit 19 is circulated in conjunction with the operation. The hot water heated by the hot water supply heat exchanger 15 that ignites the burner 2 when the 17 is driven and collects the burned heat is heat-exchanged by the heating heat exchanger 18 and transferred to the heating circuit 20. Heat of the heating circuit 20 received by the heating heat exchanger 18 is radiated as warm air by the radiator 21.

このように、利用側熱交換器である暖房用熱交換器18を経由した後の給湯循環回路19から給湯路3を分岐した構成とすることで、利用側負荷の運転に必要な高温水を確保しつつ、給湯路に対して高温水から低温水まで幅広い範囲の湯水を調節して供給することが可能な給湯優先動作を確保することができる。   In this way, the hot water supply passage 3 is branched from the hot water supply circulation circuit 19 after passing through the heating heat exchanger 18 which is the use side heat exchanger, so that the high-temperature water necessary for the operation of the use side load can be obtained. While ensuring, the hot water supply priority operation | movement which can adjust and supply the hot water of a wide range from high temperature water to low temperature water with respect to a hot water supply path can be ensured.

ここで、燃焼排ガスの潜熱を回収する潜熱回収用熱交換器16は、排ガス経路に対して給湯用熱交換器15の下流側に位置させ、給水経路に対して給湯用熱交換器15の上流側に位置させて設けており、潜熱回収熱交換器16で予熱された湯水を給湯用熱交換器15で加熱するようにしている。これにより、暖房運転時においてもバーナ2の燃焼で発生した熱量を効率よく熱交換することができ省エネにつながる。   Here, the latent heat recovery heat exchanger 16 that recovers the latent heat of the combustion exhaust gas is located downstream of the hot water supply heat exchanger 15 with respect to the exhaust gas path, and is upstream of the hot water supply heat exchanger 15 with respect to the water supply path. The hot water preheated by the latent heat recovery heat exchanger 16 is heated by the hot water supply heat exchanger 15. Thereby, the amount of heat generated by the combustion of the burner 2 can be efficiently exchanged even during heating operation, leading to energy saving.

また、暖房用熱交換器18を経由した後の給湯路3と分岐するまでの給湯循環回路19
の途中に循環量を検出する給湯流量センサ33を設けてあり、この給湯流量センサ33からの流量信号が出力されているときのみ、バーナ2の燃焼動作を行うようにしている。つまり、前記給湯流量センサ33は給湯循環回路19内に湯水が存在しない状態でバーナ2の燃焼動作が行われることを防止する、いわゆる空焚き燃焼を未然に防止するために設けたものである。
Further, a hot water supply circulation circuit 19 until the hot water supply path 3 after branching through the heating heat exchanger 18 is branched.
A hot water supply flow rate sensor 33 for detecting the circulation amount is provided in the middle of the operation, and the burner 2 performs a combustion operation only when the flow rate signal from the hot water supply flow rate sensor 33 is output. That is, the hot water supply flow rate sensor 33 is provided in order to prevent so-called air-burning combustion, which prevents the burner 2 from performing a combustion operation in the absence of hot water in the hot water supply circulation circuit 19.

ここで、循環ポンプ17を回転させているにもかかわらず給湯流量センサ33から所定の流量信号が出力されない要因としては循環ポンプ17の故障や給湯流量センサ33の故障、給湯循環回路19の破裂などさまざまなものが考えられる。このような状況になった場合にはメンテナンスを呼び修理を行わなければ器具を復旧することはできない。しかし、断水時に給湯栓6が開栓されると給湯循環回路19内の湯水は給湯路3から抜け落ちて空の状態となるが、断水が復帰すれば再び水が満たされ運転可能となりメンテナンスを呼ばなくても器具は復旧される。   Here, factors that cause the predetermined flow rate signal not to be output from the hot water supply flow rate sensor 33 even when the circulation pump 17 is rotated include a failure of the circulation pump 17, a failure of the hot water supply flow rate sensor 33, and a rupture of the hot water supply circulation circuit 19. Various things are possible. In such a situation, the appliance cannot be restored without calling for maintenance and repairing. However, when the hot water tap 6 is opened at the time of water shutoff, the hot water in the hot water supply circulation circuit 19 falls out of the hot water supply passage 3 and becomes empty. Without it, the instrument is restored.

そこで、本発明では、暖房運転の指示が行われ循環ポンプ17が動作を開始したにもかかわらず、給湯流量センサ33から所定の流量信号が出力されない場合には、一旦排水用開閉弁36を開弁し、給水側流量センサ23から流量信号が出力されるかを確認し、流量信号が出力されなかった場合には断水により給湯循環回路19内の湯水が抜け落ちたと判断して他の要因とは区別するようにしたものである。そして暖房が使用できない要因が断水によるものであることを表す表示(例えばエラーコード番号など)を遠隔操作用リモコン24に行い使用者に器具の故障でないことを知らせるようにしている。要因が断水以外である場合には断水時とは異なる表示を遠隔操作用リモコン24に行い器具の故障であることを使用者に知らせるようにしている。   Therefore, in the present invention, when a predetermined flow rate signal is not output from the hot water supply flow rate sensor 33 even though the heating operation instruction is given and the circulation pump 17 starts to operate, the drainage on-off valve 36 is once opened. It is determined whether or not a flow rate signal is output from the water supply side flow rate sensor 23. If the flow rate signal is not output, it is determined that the hot water in the hot water supply circulation circuit 19 has fallen off due to water cut off and other factors. It is intended to distinguish. Then, a display (for example, an error code number) indicating that the factor that the heating cannot be used is due to water stoppage is performed on the remote control remote controller 24 to inform the user that the appliance is not malfunctioning. When the cause is other than the water stoppage, a display different from that at the time of the water stoppage is displayed on the remote control remote control 24 so as to notify the user that the instrument is out of order.

また、断水が解除された場合、使用者が給湯栓6を開き所定の流量(例えば1L/分など)以上の流量が流れると給水側流量センサ23から流量信号が出力され通水が検出される。これにより断水が解除されたと判断でき、給湯循環回路19にも再び水が満たされ暖房運転が可能となるため、遠隔操作用リモコン24に表示している断水により暖房運転が使用できないことを表す表示を消すとともに、暖房運転を受け付ける通常状態に戻すようにしている。   Further, when the water cutoff is released, when the user opens the hot-water tap 6 and a flow rate equal to or higher than a predetermined flow rate (for example, 1 L / min) flows, a flow rate signal is output from the water supply side flow rate sensor 23 and water flow is detected. . Accordingly, it can be determined that the water cut has been released, and the hot water supply circuit 19 is again filled with water, so that the heating operation can be performed. Therefore, the display indicating that the heating operation cannot be used due to the water cut displayed on the remote control 24 for remote operation. Is turned off, and a normal state in which the heating operation is accepted is restored.

以上のように本実施の形態においては、給湯用熱交換器15と潜熱回収用熱交換器16で1つの加熱経路を形成し、前記加熱経路の循環水を利用して利用側負荷回路である暖房回路20に熱量を供給する構成としているため、前記給湯用熱交換器15や潜熱回収用熱交換器16に関連しない利用側熱交換器である暖房用熱交換器18の構成を可能とし、配管構成を含む本体構成の簡素化により器具の小型化、軽量化を実現するとともに、前記加熱経路を給湯路主体とすることで給湯性能を優先した使い勝手のよい給湯装置を提供することができ、また、給湯路を主体とする1つの加熱経路構成とすることで、単独運転時における熱交換器内の残水沸騰問題を解消している。また、循環ポンプ17を回転しても所定の循環流量が検出されなかった場合、排水用開閉弁36を開弁し排水が行われるかどうかを確認し、排水が行われなければ断水により加熱経路内の水落ち現象が発生したものとして循環ポンプ17を用いた加熱を停止することで空焚き運転を防止することができ、安全性の向上を図った給湯装置を提供することができる。さらに、循環ポンプ17を用いた加熱(暖房運転)が停止している要因が断水であることを遠隔操作用リモコン24に表示することで器具の故障ではないことを使用者に知らせることができ、断水復帰を給湯栓6からの通水により検出し器具を自動復帰させることで、不要なメンテナンスの要求を減らすことができるとともに、使用者の利便性向上を図った給湯装置を提供することができる。   As described above, in the present embodiment, one heating path is formed by the hot water supply heat exchanger 15 and the latent heat recovery heat exchanger 16, and the use side load circuit utilizes the circulating water of the heating path. Since the heat amount is supplied to the heating circuit 20, it is possible to configure the heating heat exchanger 18 that is a use side heat exchanger not related to the hot water supply heat exchanger 15 and the latent heat recovery heat exchanger 16. The simplification of the main body configuration including the piping configuration can reduce the size and weight of the appliance, and can provide an easy-to-use hot water supply apparatus that prioritizes the hot water supply performance by making the heating path a main hot water supply path. Moreover, the problem of the remaining water boiling in the heat exchanger at the time of single operation is eliminated by adopting a single heating path configuration mainly including the hot water supply path. If a predetermined circulation flow rate is not detected even when the circulation pump 17 is rotated, the drainage on-off valve 36 is opened to check whether or not drainage is performed. By stopping the heating using the circulation pump 17 as the occurrence of a water drop phenomenon, the hot watering operation can be prevented, and a hot water supply device with improved safety can be provided. Furthermore, by displaying on the remote control remote control 24 that the factor that the heating (heating operation) using the circulation pump 17 is stopped is a water failure, the user can be informed that it is not a malfunction of the instrument. By detecting the return from water shutoff by passing water from the hot water tap 6 and automatically returning the appliance, it is possible to reduce the need for unnecessary maintenance and to provide a hot water supply device that improves the convenience for the user. .

以上のように、本発明にかかる給湯装置は、給湯循環回路を主回路として給湯と暖房、または給湯と風呂、または給湯と暖房と風呂を単一の循環路を熱源とし、循環路の湯水有無を確認した後、バーナの燃焼動作を制御することにより、空焚き運転を確実に防止することができるとともに、循環路の湯水がない要因が断水であることを判別し器具故障と区分することで不要なメンテナンス要求を減らすことができる。また、器具の小型化・軽量化ができ、設置スペースの余裕確保、施工性の向上と、潜熱回収熱交換器を備えることにより、高効率化を実現しランニングコストの低減による省エネルギー化を図ることが可能となるため、ガス、石油の給湯風呂装置、給湯暖房機等の用途にも適用できる。   As described above, the hot water supply apparatus according to the present invention has a hot water supply circulation circuit as a main circuit, hot water supply and heating, or hot water supply and bath, or hot water supply and heating and bath, with a single circulation path as a heat source, and presence or absence of hot water in the circulation path. After confirming the above, by controlling the combustion operation of the burner, it is possible to reliably prevent idling, and to determine that the cause of the lack of hot water in the circulation path is water outage and classify it as an instrument failure. Unnecessary maintenance requests can be reduced. In addition, it is possible to reduce the size and weight of the equipment, ensure sufficient installation space, improve workability, and provide a latent heat recovery heat exchanger to achieve high efficiency and save energy by reducing running costs. Therefore, it can also be applied to uses such as gas and oil hot water bath devices and hot water heaters.

本発明の実施の形態1における給湯装置の構造図Structure diagram of hot water supply apparatus in Embodiment 1 of the present invention 本発明の実施の形態2における給湯装置の構造図Structure diagram of hot water supply apparatus in Embodiment 2 of the present invention

符号の説明Explanation of symbols

1 給水路
2 バーナ(加熱手段)
3 給湯路
13 排気通路(排熱経路)
15 給湯用熱交換器
16 潜熱回収用熱交換器
17 循環ポンプ
18 暖房用熱交換器(利用側熱交換器)
19 給湯循環回路
20 暖房回路
21 放熱機
22 暖房用循環ポンプ
23 給水側流量センサ
24 遠隔操作用リモコン(リモートコントロール装置)
27 風呂用熱交換器(利用側熱交換器)
28 風呂回路
29 風呂用循環ポンプ
31 浴槽
32 注湯回路
33 給湯流量センサ
34 注湯用開閉弁
35 排水回路
36 排水用開閉弁
1 Water supply path 2 Burner (heating means)
3 Hot water supply passage 13 Exhaust passage (exhaust heat passage)
15 Heat Exchanger for Hot Water Supply 16 Heat Exchanger for Latent Heat Recovery 17 Circulation Pump 18 Heat Exchanger for Heating (Use-side Heat Exchanger)
DESCRIPTION OF SYMBOLS 19 Hot water supply circulation circuit 20 Heating circuit 21 Radiator 22 Heating circulation pump 23 Water supply side flow rate sensor 24 Remote control remote control (remote control device)
27 Heat exchanger for bath (use side heat exchanger)
28 Bath Circuit 29 Bath Circulation Pump 31 Bathtub 32 Pouring Circuit 33 Hot Water Flow Rate Sensor 34 Pouring On / Off Valve 35 Drain Circuit 36 Draining On / Off Valve

Claims (7)

給水路より供給される水をバーナの燃焼により加熱し潜熱回収用熱交換器および給湯用熱交換器を介して給湯路に供給するとともに、循環ポンプを介して再度前記給湯用熱交換器に戻して給湯循環回路を形成し、前記給湯循環回路には利用側熱交換器を配設して負荷側に熱量を供給する回路を形成するとともに、前記利用側熱交換器を経由した給湯循環回路から分岐して給湯栓に湯を供給する給湯路と、前記給湯路から分岐して注湯用開閉弁を介し風呂に注湯を行うための注湯回路を形成した1缶多水路の給湯装置であって、前記利用側熱交換器を経由した後の給湯路に分岐するまでの給湯循環回路に流量センサを設け、前記循環ポンプを回転しているにもかかわらず、前記流量センサで所定の流量が検出されなかった場合、前記注湯用開閉弁を開弁し風呂への注湯が行われなければ断水であるものとして、前記循環ポンプを用いた加熱を停止するようにした給湯装置。 Water supplied from the water supply passage is heated by combustion of the burner and supplied to the hot water supply passage through the latent heat recovery heat exchanger and the hot water supply heat exchanger, and is returned to the hot water supply heat exchanger again through the circulation pump. A hot water supply circulation circuit is formed, a use side heat exchanger is provided in the hot water supply circulation circuit to form a circuit for supplying heat to the load side, and from the hot water supply circulation circuit via the use side heat exchanger A hot water supply passage that branches and supplies hot water to the hot water tap, and a hot water supply device of one can multi-water passage that forms a hot water pouring circuit for pouring hot water into the bath through the hot water on / off valve. A flow rate sensor is provided in the hot water supply circulation circuit until it branches to the hot water supply passage after passing through the use side heat exchanger, and the flow rate sensor provides a predetermined flow rate despite the rotation of the circulation pump. If no water is detected, the pouring open / close Hot water supply apparatus as the pouring of the valve opening and the bath is a suspension of water supply to be done, so as to stop the heating with the circulation pump. 利用側熱交換器として、風呂の追い焚きを行う風呂回路に熱量を供給する風呂用熱交換器として用い、給湯または風呂追い焚きの単独利用、あるいは給湯と風呂追い焚きの同時利用、を選択できるようにした請求項1記載の給湯装置。 As a use side heat exchanger, it can be used as a bath heat exchanger that supplies heat to the bath circuit that performs bath renewal, and can select either hot water supply or bath reheating alone, or simultaneous use of hot water and bath reheating The hot water supply apparatus according to claim 1, which is configured as described above. 利用側熱交換器として、暖房や浴室乾燥等を行う暖房装置を有する暖房回路に熱量を供給する暖房用熱交換器と、風呂の追い焚きを行う風呂回路に熱量を供給する風呂用熱交換器を設け、給湯または暖房または風呂追い焚きの単独利用、あるいは給湯と暖房と風呂追い焚きのうち少なくとも2つの同時利用、を選択できるようにした請求項1記載の給湯装置。 Heating heat exchanger for supplying heat to a heating circuit having a heating device that performs heating, bathroom drying, etc. as a use side heat exchanger, and a heat exchanger for bath that supplies heat to a bath circuit that retreats the bath The hot water supply apparatus according to claim 1, wherein hot water supply or heating or bath reheating can be used alone, or at least two simultaneous use of hot water supply, heating, and bath reheating can be selected. 給水路より供給される水をバーナの燃焼により加熱し潜熱回収用熱交換器および給湯用熱交換器を介して給湯路に供給するとともに、循環ポンプを介して再度前記給湯用熱交換器に戻して給湯循環回路を形成し、前記給湯循環回路には利用側熱交換器を配設して負荷側に熱量を供給する回路を形成するとともに、前記利用側熱交換器を経由した給湯循環回路から分岐して給湯栓に湯を供給する給湯路と、前記給湯循環回路または、前記給湯路から分岐して排水用開閉弁を介し排水口等に接続される排水回路を形成した1缶多水路の給湯装置であって、前記利用側熱交換器を経由した後の給湯路に分岐するまでの給湯循環回路に流量センサを設け、前記循環ポンプを回転しているにもかかわらず、前記流量センサで
所定の流量が検出されなかった場合、前記排水用開閉弁を開弁し排水が行われなければ断水であるものとして、前記循環ポンプを用いた加熱を停止するようにした給湯装置。
Water supplied from the water supply passage is heated by combustion of the burner and supplied to the hot water supply passage through the latent heat recovery heat exchanger and the hot water supply heat exchanger, and is returned to the hot water supply heat exchanger again through the circulation pump. A hot water supply circulation circuit is formed, a use side heat exchanger is provided in the hot water supply circulation circuit to form a circuit for supplying heat to the load side, and from the hot water supply circulation circuit via the use side heat exchanger A hot water supply path that branches to supply hot water to the hot water tap, and a one-can multiple water path that forms a drain circuit that branches from the hot water supply circuit or is connected to a drain outlet or the like via a drain on-off valve. The hot water supply device is provided with a flow rate sensor in a hot water supply circulation circuit until it branches to the hot water supply passage after passing through the use side heat exchanger, and the flow rate sensor The specified flow rate is not detected If the assumption opens the draining-off valve drainage is water outage to be done, the hot water supply apparatus adapted to stop the heating with the circulation pump.
利用側熱交換器として、暖房や浴室乾燥等を行う暖房装置を有する暖房回路に熱量を供給する暖房用熱交換器として用い、給湯または暖房の単独利用、あるいは給湯と暖房の同時利用、を選択できるようにした請求項4記載の給湯装置。 Use as a heat exchanger for heating that supplies the amount of heat to a heating circuit that has a heating device that performs heating, bathroom drying, etc., as the use side heat exchanger, and selects either hot water supply or heating alone or simultaneous use of hot water and heating The hot water supply device according to claim 4, wherein the hot water supply device can be used. 給湯装置をコントロールするリモートコントロール装置を備え、断水が検出され、循環ポンプを用いた加熱が停止されている間は、前記リモートコントロール装置に断水中であることを表す表示を行うようにした請求項1から5の何れかに記載の給湯装置。 A remote control device for controlling the hot water supply device is provided , and when the water breakage is detected and the heating using the circulation pump is stopped, the remote control device is displayed indicating that the water breakage is occurring. The hot water supply device according to any one of 1 to 5. 給水路に設けた流量センサを備え、断水が検出され、循環ポンプを用いた加熱が停止されている間に、前記給水路の流量センサにて所定の流量が検出された場合には、断水が解除されたものとして循環ポンプを用いた加熱を再び行えるようにした請求項1から6の何れかに記載の給湯装置。
Comprising a flow rate sensor provided in the water supply passage, water outage is detected, while the heating with a circulating pump is stopped, when a predetermined flow rate at a flow rate sensor of the water supply passage is detected, suspension of water supply The hot water supply apparatus according to any one of claims 1 to 6 , wherein heating using a circulation pump can be performed again as a released one.
JP2005312244A 2005-10-27 2005-10-27 Water heater Expired - Fee Related JP4752452B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0714758Y2 (en) * 1988-04-13 1995-04-10 株式会社ガスター 1 can 3 circuit water heater
JPH07243698A (en) * 1994-02-28 1995-09-19 Noritz Corp Bath heater device
JP2002267254A (en) * 2001-03-13 2002-09-18 Osaka Gas Co Ltd Hot-water supply apparatus
JP2002349952A (en) * 2001-05-30 2002-12-04 Gastar Corp Single-boiler double water passage hot water feeder for bath
JP2004190869A (en) * 2002-12-06 2004-07-08 Tgk Co Ltd Counterflow prevention device
JP2004257714A (en) * 2003-02-27 2004-09-16 Chofu Seisakusho Co Ltd Cogeneration system and its water leakage/air mixture detecting method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0714758Y2 (en) * 1988-04-13 1995-04-10 株式会社ガスター 1 can 3 circuit water heater
JPH07243698A (en) * 1994-02-28 1995-09-19 Noritz Corp Bath heater device
JP2002267254A (en) * 2001-03-13 2002-09-18 Osaka Gas Co Ltd Hot-water supply apparatus
JP2002349952A (en) * 2001-05-30 2002-12-04 Gastar Corp Single-boiler double water passage hot water feeder for bath
JP2004190869A (en) * 2002-12-06 2004-07-08 Tgk Co Ltd Counterflow prevention device
JP2004257714A (en) * 2003-02-27 2004-09-16 Chofu Seisakusho Co Ltd Cogeneration system and its water leakage/air mixture detecting method

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