JP6171722B2 - Hot water storage hot water heater - Google Patents
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Description
本発明は貯湯式給湯暖房装置に関し、特に湯水を再加熱する為の補助熱源機を駆動する際に送風ファンから発生する騒音を低減可能な構造を備えたものに関する。 The present invention relates to a hot water storage type hot water supply and heating device, and more particularly to a device having a structure capable of reducing noise generated from a blower fan when an auxiliary heat source device for reheating hot water is driven.
従来から、貯湯、給湯、床暖房パネル等の温水暖房端末への温水の供給、風呂への給湯及び追い焚き等の機能を備えた貯湯式給湯暖房装置が広く一般に普及している。この貯湯式給湯暖房装置は、外部熱源機により加熱された湯水を貯留する為の貯湯タンク、この貯湯タンクの湯水を再加熱する為の燃焼式の補助熱源機、貯湯タンクに低温の上水を供給する給水配管、貯湯タンクに貯留された湯水を給湯栓等の所望の給湯先に供給する出湯配管、暖房水を床暖房パネル等の温水暖房機器に供給する温水暖房回路、風呂への給湯及び追い焚きを行う風呂給湯追焚回路、温水暖房回路や風呂給湯追焚回路を加熱する熱利用循環回路等を備えている。 2. Description of the Related Art Conventionally, hot water storage type hot water supply and heating devices having functions such as supply of hot water to hot water heating terminals such as hot water storage, hot water supply, floor heating panels, hot water supply to a bath, and reheating are widely used. This hot water storage hot water heater is a hot water storage tank for storing hot water heated by an external heat source device, a combustion type auxiliary heat source device for reheating the hot water in the hot water storage tank, and hot water in the hot water storage tank. Supply water piping, hot water stored in a hot water storage tank, hot water supply piping for supplying hot water to a desired hot water supply destination such as a hot water tap, hot water heating circuit for supplying heating water to hot water heating equipment such as a floor heating panel, hot water supply to a bath, and It includes a hot water supply and reheating circuit for reheating, a hot water heating circuit and a heat utilization circulation circuit for heating the hot and hot water reheating circuit.
上記の燃焼式の補助熱源機は、燃焼用空気を外部から取り込む送風ファン、燃焼用空気と燃料ガスとを混合して燃焼するバーナ部、燃焼熱と水との間で熱交換して水を加熱する熱交換器部、熱交換後の排気を外部に排出する為の排気通路部（排気集合筒）等を備え、貯湯タンク内に貯留された湯水温度が低い場合等に湯水を再加熱する。 The combustion-type auxiliary heat source machine includes a blower fan that takes in combustion air from the outside, a burner unit that mixes and burns combustion air and fuel gas, and heat exchange between the combustion heat and water to exchange water. A heat exchanger for heating, an exhaust passage (exhaust tube) for exhausting the exhaust after heat exchange to the outside, etc., and reheating hot water when the temperature of the hot water stored in the hot water tank is low .
ところで、上記の補助熱源機の稼動時には、送風ファンの吸込み口の吸い込み音、ガスバーナーの燃焼音やファンモータの回転音等を起因とした騒音が吸込み口から外装ケースの外部に漏れてしまう。この種の騒音を低減する為に、例えば、特許文献１の燃焼装置では、送風ファンの吸込み口の近傍における外装ケースの壁面に種々の形状の障害物を設けた構造が開示されている。この騒音低減構造によれば、種々の形状の障害物が騒音に対する遮蔽板としての機能を奏するので、吸込み口から発生する騒音を低減することができる。 By the way, during operation of the auxiliary heat source device, noise caused by the suction sound of the suction port of the blower fan, the combustion sound of the gas burner, the rotation sound of the fan motor, etc. leaks from the suction port to the outside of the outer case. In order to reduce this kind of noise, for example, in the combustion apparatus of Patent Document 1, a structure in which obstacles of various shapes are provided on the wall surface of the exterior case in the vicinity of the suction port of the blower fan is disclosed. According to this noise reduction structure, since obstacles of various shapes function as a shielding plate against noise, it is possible to reduce noise generated from the suction port.
従来の貯湯式給湯暖房装置においては、貯湯タンクのサイズに応じて外装ケースのサイズが規定されるので、貯湯タンクを備えていない一般的な給湯装置と比較すると、外装ケースが大型化してしまう。このため、外装ケースの内部において送風ファンの吸込み口近傍の空間が広がり、送風ファンの吸込み口から発生する騒音の拡散領域が拡大されて外部に漏れる騒音が増大するという問題がある。 In the conventional hot water storage type hot water heater, the size of the outer case is regulated according to the size of the hot water storage tank, so that the outer case becomes larger than a general hot water supply device that does not include a hot water storage tank. For this reason, there is a problem in that the space near the suction port of the blower fan is expanded inside the outer case, the diffusion region of noise generated from the suction port of the blower fan is expanded, and noise leaking to the outside increases.
しかし、送風ファンの騒音を低減する為に、特許文献１の燃焼装置のように外装ケースの壁面に障害物を設置しても、障害物と送風ファンの吸込み口との間に距離が生じたり、騒音の拡散領域を効果的に埋めることができないので、送風ファンの騒音を低減することが難しく、結果的に、貯湯タンクを備えた構造では騒音が外部に漏れ易くなる。 However, in order to reduce the noise of the blower fan, even if an obstacle is installed on the wall surface of the outer case as in the combustion apparatus of Patent Document 1, a distance may be generated between the obstacle and the suction port of the blower fan. Since the noise diffusion area cannot be effectively filled, it is difficult to reduce the noise of the blower fan. As a result, the structure having the hot water storage tank is likely to leak noise to the outside.
本発明の目的は、貯湯式給湯暖房装置において、補助熱源機の送風ファンの吸込み口から発生する騒音を低減可能なもの、騒音の低減化を容易な構造で実現可能なもの、等を提供することである。 An object of the present invention is to provide a hot water storage hot-water heater that can reduce noise generated from a suction port of a blower fan of an auxiliary heat source machine, can realize noise reduction with an easy structure, and the like. That is.
請求項１の貯湯式給湯暖房装置は、貯湯タンクと、この貯湯タンクの湯水を加熱する為の燃焼式の補助熱源機と、前記貯湯タンクの湯水又は前記補助熱源機で加熱した湯水によって暖房用熱媒が加熱される暖房回路と、これらを収納した外装ケースとを備えた貯湯式給湯暖房装置において、前記暖房回路は、前記暖房用熱媒の膨張を吸収する為の膨張タンクを備え、前記膨張タンクは、前記補助熱源機の燃焼用送風手段の吸込み口と接近して対向するように配置されたことを特徴としている。 The hot water storage hot water heater of claim 1 is for heating by a hot water storage tank, a combustion type auxiliary heat source for heating the hot water in the hot water storage tank, and hot water in the hot water storage tank or hot water heated by the auxiliary heat source. In a hot water storage type hot water supply and heating device including a heating circuit in which a heat medium is heated and an exterior case storing these, the heating circuit includes an expansion tank for absorbing expansion of the heating heat medium, The expansion tank is arranged to be close to and opposed to the suction port of the combustion air blowing means of the auxiliary heat source machine.
請求項２の貯湯式給湯暖房装置は、請求項１の発明において、前記膨張タンクは、前記燃焼用送風手段の吸込み口と前記外装ケースとの間に配置されたことを特徴としている。 According to a second aspect of the present invention, there is provided the hot water storage type hot water supply and heating device according to the first aspect, wherein the expansion tank is disposed between the suction port of the combustion air blowing means and the outer case.
請求項３の貯湯式給湯暖房装置は、請求項１又は２の発明において、前記膨張タンクの外面に断熱材が貼り付けられていることを特徴としている。 According to a third aspect of the present invention, there is provided a hot water storage type hot-water supply / heating device, wherein the heat insulating material is attached to the outer surface of the expansion tank.
請求項１の発明によれば、暖房回路は、暖房用熱媒の膨張を吸収する為の膨張タンクを備え、膨張タンクは、補助熱源機の燃焼用送風手段の吸込み口と接近して対向するように配置されたので、既存の暖房回路の膨張タンクを利用して燃焼用送風手段の吸込み口の近傍の空間を埋めることで、燃焼用送風手段の吸込み口から発生する騒音の拡散領域を低減することができる。 According to the invention of claim 1, the heating circuit includes an expansion tank for absorbing expansion of the heating medium, and the expansion tank is close to and opposed to the suction port of the combustion air blowing means of the auxiliary heat source machine. As a result, the space near the suction port of the combustion air blowing means is filled using the expansion tank of the existing heating circuit, thereby reducing the diffusion region of noise generated from the suction port of the combustion air blowing means. can do.
従って、既存の膨張タンクの配置を変更することで、燃焼用送風手段の吸込み口から発生する騒音の拡散を防止し、外部へ漏れる騒音を低減することができる。燃焼用送風手段の吸込み口と接近して対向するように膨張タンクを配置するだけで外部へ漏れる騒音を低減可能であるので、容易な構造で騒音の低減化を実現することができる。膨張タンクは、流体である暖房用熱媒が充填された重量物であるので、振動が減衰されて音の遮蔽効果が高い、故に、既存の膨張タンクを利用することで、騒音を効果的に低減することができる。 Therefore, by changing the arrangement of the existing expansion tank, it is possible to prevent the noise generated from the suction port of the combustion air blowing means from diffusing and reduce the noise leaking to the outside. Since the noise leaking to the outside can be reduced simply by disposing the expansion tank so as to be close to and opposed to the suction port of the combustion air blowing means, noise can be reduced with an easy structure. Since the expansion tank is a heavy object filled with a heating medium that is a fluid, the vibration is attenuated and the sound shielding effect is high. Therefore, the noise can be effectively reduced by using the existing expansion tank. Can be reduced.
請求項２の発明によれば、膨張タンクは、燃焼用送風手段の吸込み口と外装ケースとの間に配置されたので、燃焼用送風手段の吸込み口と外装ケースとの間の空間を有効に利用して、燃焼用送風手段の吸込み口から外部へ漏れる騒音の低減を図ることができる。 According to the invention of claim 2, since the expansion tank is disposed between the suction port of the combustion air blowing means and the outer case, the space between the suction port of the combustion air blowing means and the outer case is effectively used. By utilizing this, it is possible to reduce noise leaking outside from the suction port of the combustion air blowing means.
請求項３の発明によれば、膨張タンクの外面に断熱材が貼り付けられているので、断熱材の吸音作用によって燃焼用送風手段の吸込み口から外部へ漏れる騒音をより一層低減することができる。 According to invention of Claim 3, since the heat insulating material is affixed on the outer surface of an expansion tank, the noise which leaks outside from the suction inlet of the ventilation means for combustion by the sound absorption effect | action of a heat insulating material can be reduced further. .
以下、本発明を実施するための形態について実施例に基づいて説明する。 Hereinafter, modes for carrying out the present invention will be described based on examples.
次に、本発明の貯湯式給湯暖房装置１の全体構成について説明する。
図１に示すように、貯湯式給湯暖房装置１は、貯湯、給湯、床暖房パネル等の温水暖房端末への温水の供給、風呂への給湯及び追い焚き等の機能を有するものであり、貯湯タンク２、燃焼式の補助熱源機３、第１，第２熱交換器４，５、給水配管６、出湯配管７、加熱循環回路８、風呂給湯追焚回路９、温水暖房回路１１、熱利用循環回路１２、制御ユニット１３等を備え、これら大部分は外装ケース１４内に一体的に収納されて構成されている。
Next, the whole structure of the hot water storage type hot water supply and heating device 1 of the present invention will be described.
As shown in FIG. 1, a hot water storage type hot water supply and heating device 1 has functions such as hot water storage, hot water supply, hot water supply to a hot water heating terminal such as a floor heating panel, hot water supply to a bath, and reheating. Tank 2, combustion type auxiliary heat source 3, first and second heat exchangers 4, 5, water supply pipe 6, hot water supply pipe 7, heating circulation circuit 8, bath hot water supply circuit 9, hot water heating circuit 11, heat utilization A circulation circuit 12, a control unit 13, and the like are provided, and most of them are integrally housed in an outer case 14.
尚、貯湯式給湯暖房装置１は、外部熱源機として貯湯タンク２内の湯水を加熱可能な燃料電池発電装置と、この燃料電池発電装置と貯湯式給湯暖房装置１との間に湯水を循環させる為の加熱循環回路８等と組み合わせることで燃料電池コージェネレーションシステムが構成されるが、貯湯式給湯暖房装置１以外の構成の詳細な説明は省略する。 The hot water storage hot water heater 1 is a fuel cell power generator capable of heating hot water in the hot water storage tank 2 as an external heat source, and circulates hot water between the fuel cell power generator and the hot water hot water heater 1. Although the fuel cell cogeneration system is configured by combining with the heating circulation circuit 8 and the like for this purpose, a detailed description of the configuration other than the hot water storage type hot water supply and heating device 1 is omitted.
次に、貯湯タンク２、補助熱源機３及び第１，第２熱交換器４，５について説明する。
図１に示すように、貯湯タンク２は、外部熱源機で加熱された高温の温水（例えば、６５〜９０℃）を貯留可能な密閉タンクで構成され、貯留された湯水の放熱を防ぐ為にタンク周囲は断熱材で覆われている。
Next, the hot water storage tank 2, the auxiliary heat source unit 3, and the first and second heat exchangers 4 and 5 will be described.
As shown in FIG. 1, the hot water storage tank 2 is composed of a sealed tank capable of storing high-temperature hot water (for example, 65 to 90 ° C.) heated by an external heat source device, and prevents heat dissipation of the stored hot water. The tank is covered with insulation.
補助熱源機３は、熱利用循環回路１２に設けられ、燃料ガスを燃焼して湯水の加熱を行う為の公知のガス給湯器で構成されている。補助熱源機３は、貯湯タンク２内の湯水温度が設定温度以下の場合や熱利用循環回路１２を循環する湯水の温度が不足する等の特別な場合に限り、主制御ユニット１３から指令が送信されて燃焼作動され、熱利用循環回路１２を流れる湯水を再加熱するものである。 The auxiliary heat source unit 3 is provided in the heat utilization circulation circuit 12 and is configured by a known gas water heater for heating the hot water by burning the fuel gas. The auxiliary heat source unit 3 transmits a command from the main control unit 13 only in a special case such as when the temperature of the hot water in the hot water storage tank 2 is lower than the set temperature or the temperature of the hot water circulating in the heat utilization circulation circuit 12 is insufficient. The hot water flowing through the heat utilization circulation circuit 12 is reheated and reheated.
補助熱源機３は、燃焼用空気を供給する為の送風ファン３ａ（燃焼用送風手段に相当する）と、燃料ガスを燃焼させるバーナーユニット３ｂと、燃焼ガスの主として顕熱を回収する顕熱回収用熱交換器３ｃと、顕熱回収後の燃焼排気ガスの主として潜熱を回収する潜熱回収用熱交換器３ｄ等を備えているが、具体的な構造は後述する。 The auxiliary heat source unit 3 includes a blower fan 3a (corresponding to a combustion blower) for supplying combustion air, a burner unit 3b for burning fuel gas, and sensible heat recovery for mainly recovering sensible heat of the combustion gas. For example, a latent heat recovery heat exchanger 3d for recovering mainly latent heat of the combustion exhaust gas after sensible heat recovery, and the like will be described later.
第１熱交換器４は、風呂給湯追焚回路９を流れる浴槽水を加熱するものであり、熱利用循環回路１２の一部となる熱交換通路部４ａ、風呂給湯追焚回路９の一部となる内部通路部４ｂを有している。第１熱交換器４において、熱利用循環回路１２を流れる高温の湯水と風呂給湯追焚回路９を流れる浴槽水との間で熱交換され、浴槽水は加熱される。 The first heat exchanger 4 heats the bath water flowing through the bath hot water supply circuit 9, and forms a part of the heat exchange passage 4 a and the bath hot water supply circuit 9 that are part of the heat utilization circulation circuit 12. It has an internal passage portion 4b. In the 1st heat exchanger 4, heat exchange is carried out between the hot hot water which flows through the heat utilization circuit 12, and the bathtub water which flows through the bath hot water supply circuit 9, and the bathtub water is heated.
第２熱交換器５は、温水暖房回路１１を流れる暖房水を加熱するものであり、熱利用循環回路１２の一部となる熱交換通路部５ａ、温水暖房回路１１の一部となる熱交換通路部５ｂを有している。第２熱交換器５において、熱利用循環回路１２を流れる高温の湯水と温水暖房回路１１を流れる暖房水との間で熱交換され、暖房水が加熱される。 The 2nd heat exchanger 5 heats the heating water which flows through the hot water heating circuit 11, and heat exchange passage part 5a which becomes a part of heat utilization circulation circuit 12, and heat exchange which becomes a part of the hot water heating circuit 11 It has a passage 5b. In the second heat exchanger 5, heat is exchanged between the hot water flowing through the heat utilization circuit 12 and the heating water flowing through the hot water heating circuit 11, and the heating water is heated.
次に、給水配管６と出湯配管７について説明する。
給水配管６は、上水源から低温の上水を貯湯タンク２に供給するものであり、上流給水通路部６ａ、中間給水通路部６ｂ、下流給水通路部６ｃを有し、上水源に上流端が接続され、貯湯タンク２の下部に下流端が接続されている。上流給水通路部６ａには、減圧弁６ｄが設置され、中間給水通路部６ｂには、逆止弁６ｅが設置されている。
Next, the water supply pipe 6 and the hot water supply pipe 7 will be described.
The water supply pipe 6 supplies low temperature clean water from a water supply source to the hot water storage tank 2, and has an upstream water supply passage portion 6a, an intermediate water supply passage portion 6b, and a downstream water supply passage portion 6c. The downstream end is connected to the lower part of the hot water storage tank 2. A pressure reducing valve 6d is installed in the upstream water supply passage 6a, and a check valve 6e is installed in the intermediate water supply passage 6b.
中間給水通路部６ｂと下流給水通路部６ｃとの間から熱利用循環回路１２に接続するバイパス通路部１６が分岐され、この分岐部には、蓄熱切換弁６ｇが設置されている。このバイパス通路部１６により、低温の上水を熱利用循環回路１２に供給することができ、また逆に、熱利用循環回路１２から湯水を貯湯タンク２に戻すことができる。 A bypass passage portion 16 connected to the heat utilization circuit 12 is branched from between the intermediate water supply passage portion 6b and the downstream water supply passage portion 6c, and a heat storage switching valve 6g is installed at this branch portion. By this bypass passage 16, low temperature clean water can be supplied to the heat utilization circuit 12, and conversely, hot water can be returned from the heat utilization circuit 12 to the hot water storage tank 2.
出湯配管７は、貯湯タンク２内に貯湯された湯水を給湯栓等の所望の給湯先に供給するものであり、高温の湯水が流れる上流出湯通路部７ａ、混合湯水が流れる下流出湯通路部７ｂを有し、貯湯タンク２の上部に上流端が接続され、給湯栓に下流端が接続されている。上流出湯通路部７ａと下流出湯通路部７ｂとの間には、混合弁１８が設置されている。この混合弁１８には、上流給水通路部６ａと中間給水通路部６ｂとの間から分岐したバイパス通路部１７が接続されている。 The hot water supply pipe 7 supplies hot water stored in the hot water storage tank 2 to a desired hot water supply destination such as a hot water tap, an upper effluent hot water passage portion 7a through which hot hot water flows, and a lower effluent hot water passage through which mixed hot water flows. The upstream end is connected to the upper part of the hot water storage tank 2, and the downstream end is connected to the hot water tap. A mixing valve 18 is installed between the upper effluent hot water passage portion 7a and the lower effluent hot water passage portion 7b. The mixing valve 18 is connected to a bypass passage portion 17 branched from between the upstream water supply passage portion 6a and the intermediate water supply passage portion 6b.
出湯配管７の下流出湯通路部７ｂの途中部には、出湯水比例弁１９ａが設置され、この出湯水比例弁１９ａの下流側から風呂給湯追焚回路９へ接続する風呂出湯通路１９が分岐されている。風呂出湯通路１９には、注湯電磁弁１９ｂ、逆止弁１９ｃ等が順に一体的に設置されている。 An outlet hot water proportional valve 19a is installed in the middle of the lower outlet hot water passage section 7b of the outlet hot water piping 7, and a bath outlet hot water passage 19 connected from the downstream side of the outgoing hot water proportional valve 19a to the bath hot water supply circuit 9 is branched. Has been. A pouring solenoid valve 19b, a check valve 19c, and the like are integrally installed in the bath outlet passage 19 in order.
次に、加熱循環回路８について説明する。
図１に示すように、加熱循環回路８は、貯湯タンク２と外部熱源機との間に湯水を循環させる閉回路であり、往き側循環通路部８ａ、戻り側循環通路部８ｂを有し、貯湯タンク２の下部に上流端が接続され、途中部分が外部熱源機を経由して、貯湯タンク２の上部に下流端が接続されている。往き側循環通路部８ａから戻り側循環通路部８ｂに接続するバイパス通路部８ｃが分岐され、この分岐部には、貯湯切換弁８ｄが設置されている。
Next, the heating circulation circuit 8 will be described.
As shown in FIG. 1, the heating circulation circuit 8 is a closed circuit for circulating hot water between the hot water storage tank 2 and the external heat source machine, and has a forward circulation passage 8a and a return circulation passage 8b. The upstream end is connected to the lower part of the hot water storage tank 2, and the downstream end is connected to the upper part of the hot water storage tank 2 through an external heat source machine in the middle. A bypass passage portion 8c connected to the return-side circulation passage portion 8b is branched from the forward-side circulation passage portion 8a, and a hot water storage switching valve 8d is installed at this branch portion.
次に、風呂給湯追焚回路９と温水暖房回路１１について説明する。
図１に示すように、風呂給湯追焚回路９は、風呂のお湯を追い焚きする回路であり、風呂戻り通路部９ａ、風呂往き通路部９ｂを有している。風呂戻り通路部９ａと風呂往き通路部９ｂとの間には、第１熱交換器４の内部通路部４ｂが接続され、風呂戻り通路部９ａには、風呂循環ポンプ９ｃが設置されている。
Next, the bath hot water supply circuit 9 and the hot water heating circuit 11 will be described.
As shown in FIG. 1, the bath hot water supply circuit 9 is a circuit for scooping hot water in the bath, and has a bath return passage portion 9a and a bath return passage portion 9b. An internal passage portion 4b of the first heat exchanger 4 is connected between the bath return passage portion 9a and the bath return passage portion 9b, and a bath circulation pump 9c is installed in the bath return passage portion 9a.
温水暖房回路１１（暖房回路に相当する）は、床暖房パネルや浴室乾燥機等の温水暖房端末に供給される暖房水（暖房用熱媒に相当する）を循環させる回路であり、暖房戻り通路部１１ａ、暖房高温往き通路部１１ｂ、暖房低温往き通路部１１ｃを有している。暖房戻り通路部１１ａには、加熱による暖房水の膨張を吸収する為の膨張タンク１１ｄと、暖房水を循環させる為の暖房循環ポンプ１１ｅとが設置されている。暖房高温往き通路部１１ｂには、第２熱交換器５の熱交換通路部５ｂが介装されている。 The hot water heating circuit 11 (corresponding to a heating circuit) is a circuit that circulates heating water (corresponding to a heating medium) supplied to a hot water heating terminal such as a floor heating panel or a bathroom dryer. It has a portion 11a, a heating high-temperature passage portion 11b, and a heating / low-temperature passage portion 11c. The heating return passage portion 11a is provided with an expansion tank 11d for absorbing the expansion of the heating water due to heating, and a heating circulation pump 11e for circulating the heating water. A heat exchange passage portion 5b of the second heat exchanger 5 is interposed in the heating high temperature going passage portion 11b.
次に、熱利用循環回路１２について説明する。
熱利用循環回路１２は、貯湯タンク２の湯水又は補助熱源機３で加熱した湯水を循環させて温水暖房回路１１や風呂給湯追焚回路９との間で熱交換を行う閉回路であり、湯水往き通路部１２ａ、補助熱源機往き通路部１２ｂ、熱交換器往き通路部１２ｃ、湯水戻り通路部１２ｄを有している。
Next, the heat utilization circulation circuit 12 will be described.
The heat utilization circulation circuit 12 is a closed circuit that circulates hot water in the hot water storage tank 2 or hot water heated by the auxiliary heat source unit 3 to exchange heat with the hot water heating circuit 11 or the bath hot water supply circuit 9. It has a forward passage portion 12a, an auxiliary heat source device forward passage portion 12b, a heat exchanger forward passage portion 12c, and a hot water return passage portion 12d.
湯水往き通路部１２ａの上流端が貯湯タンク２の上部に接続され、湯水往き通路部１２ａの下流端と補助熱源機往き通路部１２ｂの上流端と湯水戻り通路部１２ｄの下流端との合流部には、三方弁１２ｅが設置されている。湯水往き通路部１２ａには、逆止弁１２ｆが設置され、補助熱源機往き通路部１２ｂには、潜熱回収用熱交換器３ｄへ湯水を送る為の加圧ポンプ１２ｇが設置されている。 The upstream end of the hot water going-out passage portion 12a is connected to the upper part of the hot water storage tank 2, and the junction between the downstream end of the hot-water going-up passage portion 12a, the upstream end of the auxiliary heat source unit going-out passage portion 12b, and the downstream end of the hot water return passage portion 12d. Is provided with a three-way valve 12e. A check valve 12f is installed in the hot water going-out passage section 12a, and a pressurizing pump 12g for sending hot water to the latent heat recovery heat exchanger 3d is installed in the auxiliary heat source machine going-out passage section 12b.
補助熱源機往き通路部１２ｂと熱交換器往き通路部１２ｃとの間に、補助熱源機３の潜熱回収用熱交換器３ｄと顕熱回収用熱交換器３ｃとが接続されている。熱交換器往き通路部１２ｃの下流側部分の１対の分岐通路と湯水戻り通路部１２ｄの上流側部分の１対の分岐通路との間に、第１，第２熱交換器４，５の熱交換通路部４ａ，５ａが夫々接続されている。湯水戻り通路部１２ｄの１対の分岐通路に第１熱交出口電磁弁１２ｈと第２熱交出口電磁弁１２ｉが夫々設置されている。 A latent heat recovery heat exchanger 3d and a sensible heat recovery heat exchanger 3c of the auxiliary heat source unit 3 are connected between the auxiliary heat source unit forward passage 12b and the heat exchanger forward passage 12c. Between the pair of branch passages in the downstream portion of the heat exchanger forward passage portion 12c and the pair of branch passages in the upstream portion of the hot water return passage portion 12d, the first and second heat exchangers 4 and 5 The heat exchange passages 4a and 5a are connected to each other. A first heat exchange outlet solenoid valve 12h and a second heat exchange outlet solenoid valve 12i are respectively installed in the pair of branch passages of the hot water return passage portion 12d.
熱交換器往き通路部１２ｃから出湯配管７に接続する出湯通路部１２ｊが分岐され、出湯通路部１２ｊには、タンク水比例弁１２ｋが設置されている。この出湯通路部１２ｊによって補助熱源機３で加熱した湯水を出湯配管７に供給することができる。 A hot water passage portion 12j connected to the hot water piping 7 is branched from the heat exchanger forward passage portion 12c, and a tank water proportional valve 12k is installed in the hot water passage portion 12j. The hot water heated by the auxiliary heat source unit 3 can be supplied to the hot water piping 7 by the hot water passage portion 12j.
次に、本発明に関連する外装ケース１４と補助熱源機３と膨張タンク１１ｄの具体的な構造と、外装ケース１４の内部における補助熱源機３と膨張タンク１１ｄの設置構造について図２，図３に基づいて説明する。 Next, a specific structure of the outer case 14, the auxiliary heat source unit 3, and the expansion tank 11d related to the present invention, and an installation structure of the auxiliary heat source unit 3 and the expansion tank 11d inside the outer case 14 will be described with reference to FIGS. Based on
図２に示すように、外装ケース１４は、板状の外装プレート２１を柱状のフレーム部材２２に固定することで薄鋼板製の平面視長方形状の箱状に構成され、このフレーム部材２２の上側部分に湯水の加熱を行う為の補助熱源機３が固定されている。 As shown in FIG. 2, the exterior case 14 is formed in a rectangular box-like box shape made of thin steel plate by fixing a plate-shaped exterior plate 21 to a columnar frame member 22, and an upper side of the frame member 22. An auxiliary heat source unit 3 for heating hot water is fixed to the part.
図２に示すように、補助熱源機３は、上記の送風ファン３ａ、この送風ファン３ａによって取り込まれた燃焼用空気と燃料ガスとを混合させて燃焼させるバーナ部２４、このバーナ部２４の上部に配置され且つバーナ部２４による燃焼熱と湯水との間で熱交換する熱交換器部２５、この熱交換器部２５の上部に配置され且つ熱交換器部２５による熱交換後の排気を前方（図２紙面右後方）に排出する為の排気集合筒２６、各種配管等を備えている。 As shown in FIG. 2, the auxiliary heat source unit 3 includes the blower fan 3 a, a burner unit 24 that mixes and burns combustion air and fuel gas taken in by the blower fan 3 a, and an upper part of the burner unit 24. And a heat exchanger section 25 for exchanging heat between combustion heat and hot water by the burner section 24, and an exhaust gas after heat exchange by the heat exchanger section 25 is disposed forward of the heat exchanger section 25. An exhaust collecting cylinder 26, various pipes, and the like are provided for discharging to the rear (right rear in FIG. 2).
送風ファン３ａは、例えば、公知のシロッコファンで構成されている。図３に示すように、送風ファン３ａは、ケーシング３１と、ケーシング３１に形成された吸込み口３２と、ケーシング３１内に回転可能に設けられた回転羽根３３と、この回転羽根３３を回転駆動する為の駆動モータ部３４等を備え、吸込み口３２が後方（図２紙面右前方、図３紙面右方）の外装プレート２１に向いた状態でバーナ部２４の下端部に固定されている。 The blower fan 3a is composed of a known sirocco fan, for example. As shown in FIG. 3, the blower fan 3 a rotationally drives the casing 31, a suction port 32 formed in the casing 31, a rotary blade 33 provided rotatably in the casing 31, and the rotary blade 33. The suction port 32 is fixed to the lower end portion of the burner portion 24 so as to face the exterior plate 21 on the rear side (right front in FIG. 2, right side in FIG. 3).
バーナ部２４は、上記のバーナーユニット３ｂ、このバーナーユニット３ｂを収容した箱状のバーナ缶体２４ａ等を備えている。熱交換器部２５は、顕熱回収部２７、この顕熱回収部２７の上部に配置された潜熱回収部２８を備えている。潜熱回収部２８の上端部に、排気集合筒２６が設けられている。顕熱回収部２７は、上記の顕熱回収用熱交換器３ｃ、顕熱回収用熱交換器３ｃを収容する下側熱交換器缶体２７ａ等を備えている。潜熱回収部２８は、上記の潜熱回収用熱交換器３ｄ、この潜熱回収用熱交換器３ｄを収容する上側熱交換器缶体２８ａ等を備えている。 The burner unit 24 includes the above-described burner unit 3b, a box-shaped burner can 24a that accommodates the burner unit 3b, and the like. The heat exchanger unit 25 includes a sensible heat recovery unit 27 and a latent heat recovery unit 28 disposed above the sensible heat recovery unit 27. An exhaust collecting cylinder 26 is provided at the upper end of the latent heat recovery unit 28. The sensible heat recovery unit 27 includes the sensible heat recovery heat exchanger 3c, the lower heat exchanger can body 27a that houses the sensible heat recovery heat exchanger 3c, and the like. The latent heat recovery unit 28 includes the above-described latent heat recovery heat exchanger 3d, an upper heat exchanger can 28a that accommodates the latent heat recovery heat exchanger 3d, and the like.
図２，図３に示すように、膨張タンク１１ｄは、合成樹脂製のものであって、偏平な形状の密閉型のタンクで構成されている。膨張タンク１１ｄの高さは、補助熱源機３の全高の約１／２倍程度である。膨張タンク１１ｄは、外装ケース１４の内側の上側約１／３部分において、その偏平な外面が外装プレート２１の壁面に沿うように設置されている。 As shown in FIGS. 2 and 3, the expansion tank 11 d is made of a synthetic resin, and is constituted by a flat closed tank. The height of the expansion tank 11d is about ½ times the total height of the auxiliary heat source unit 3. The expansion tank 11 d is installed so that the flat outer surface thereof is along the wall surface of the exterior plate 21 in the upper approximately 1/3 portion inside the exterior case 14.
膨張タンク１１ｄの外面には、暖房水の放熱を防ぐ為に断熱材３５が粘着テープ等によって貼り付けられている（図３参照）。断熱材３５は、例えば、発泡ポリプロピレン、発泡ポリスチレン等からなる合成樹脂発泡体製の成形材であって、偏平な膨張タンク１１ｄの周囲を覆っている A heat insulating material 35 is attached to the outer surface of the expansion tank 11d with an adhesive tape or the like in order to prevent heat dissipation from the heating water (see FIG. 3). The heat insulating material 35 is a molding material made of a synthetic resin foam made of, for example, foamed polypropylene, foamed polystyrene, or the like, and covers the periphery of the flat expansion tank 11d.
図２，図３に示すように、膨張タンク１１ｄは、送風ファン３ａの吸込み口３２と外装ケース１４との間に配置されている。さらに、膨張タンク１１ｄは、その下端部が補助熱源機３の下端部と同一高さ位置となるように配置され、送風ファン３ａの吸込み口３２と接近して対向するように配置されている。膨張タンク１１ｄが吸込み口３２を遮るように配置されることで、送風ファン３ａのケーシング３１の外面と膨張タンク１１ｄの外面との隙間３７から吸込み口３２に取り込まれる燃料用空気の流路が形成される。 As shown in FIGS. 2 and 3, the expansion tank 11 d is disposed between the suction port 32 of the blower fan 3 a and the outer case 14. Furthermore, the expansion tank 11d is disposed so that the lower end thereof is at the same height as the lower end of the auxiliary heat source unit 3, and is disposed so as to be close to and opposed to the suction port 32 of the blower fan 3a. By disposing the expansion tank 11d so as to block the suction port 32, a flow path for fuel air taken into the suction port 32 from the gap 37 between the outer surface of the casing 31 of the blower fan 3a and the outer surface of the expansion tank 11d is formed. Is done.
次に、貯湯式給湯暖房装置１の作用及び効果について説明する。
補助熱源機３の稼動に伴い、送風ファン３ａが回転駆動すると、外装ケース１４の外装プレート２１に形成された複数の給気口（図示略）から外装ケース１４の内部に燃焼用空気が流入する。流入した燃焼用空気は、送風ファン３ａのケーシング３１の外面と膨張タンク１１ｄの外面との隙間３７を通って吸込み口３２を介してバーナ部２４に供給される（図３矢印参照）。
Next, the operation and effect of the hot water storage type hot water supply / room heating device 1 will be described.
When the blower fan 3a is rotationally driven with the operation of the auxiliary heat source unit 3, combustion air flows into the exterior case 14 from a plurality of air supply ports (not shown) formed in the exterior plate 21 of the exterior case 14. . The combustion air that has flowed in is supplied to the burner portion 24 through the suction port 32 through the gap 37 between the outer surface of the casing 31 of the blower fan 3a and the outer surface of the expansion tank 11d (see the arrow in FIG. 3).
ここで、従来では、膨張タンク１１ｄは、暖房水の注入性等が考慮されて、外装ケース１４の内部の補助熱源機３の下方に配置されていた。このため、外装ケース１４と吸込み口３２との間に通常の給湯装置の場合と比較して大きめの空間が生じてしまい、この空間に吸込み口３２から発生する騒音が拡散することで、騒音が増大していた。 Here, conventionally, the expansion tank 11d has been arranged below the auxiliary heat source unit 3 inside the outer case 14 in consideration of the injection property of the heating water and the like. For this reason, a larger space is generated between the outer case 14 and the suction port 32 than in the case of a normal hot water supply device, and noise generated from the suction port 32 is diffused in this space, so that the noise is reduced. It was increasing.
しかし、本実施例のように、膨張タンク１１ｄを送風ファン３ａの吸込み口３２と対向状となるように外装ケース１４と吸込み口３２との間に配置して、補助熱源機３と外装ケース１４との間の空間を埋めることで、騒音の拡散が防止されて騒音が低減する。このように、既存の膨張タンク１１ｄを騒音対策として有効利用することができる。 However, as in the present embodiment, the expansion tank 11d is disposed between the outer case 14 and the suction port 32 so as to face the suction port 32 of the blower fan 3a, so that the auxiliary heat source device 3 and the outer case 14 are disposed. By filling the space between the two, noise diffusion is prevented and noise is reduced. Thus, the existing expansion tank 11d can be effectively used as a noise countermeasure.
以上説明したように、温水暖房回路１１は、暖房水の膨張を吸収する為の膨張タンク１１ｄを備え、膨張タンク１１ｄは、補助熱源機３の送風ファン３ａの吸込み口３２と接近して対向するように配置されたので、温水暖房回路１１の膨張タンク１１ｄを利用して送風ファン３ａの吸込み口３２の近傍の空間を埋めることで、送風ファン３ａの吸込み口３２から発生する騒音の拡散領域を低減することができる。 As described above, the hot water heating circuit 11 includes the expansion tank 11d for absorbing the expansion of the heating water, and the expansion tank 11d is close to and opposed to the suction port 32 of the blower fan 3a of the auxiliary heat source unit 3. Since the space near the suction port 32 of the blower fan 3a is filled using the expansion tank 11d of the hot water heating circuit 11, a diffusion region of noise generated from the suction port 32 of the blower fan 3a is provided. Can be reduced.
従って、既存の膨張タンク１１ｄの配置を変更することで、送風ファン３ａの吸込み口３２から発生する騒音の拡散を防止し、外部へ漏れる騒音を低減することができる。送風ファン３ａの吸込み口３２と接近して対向するように膨張タンク１１ｄを配置するだけで外部へ漏れる騒音を低減可能であるので、容易な構造で騒音の低減化を実現することができる。膨張タンク１１ｄは、流体である暖房水が充填された重量物であるので、振動が減衰されて音の遮蔽効果が高い、故に、既存の膨張タンク１１ｄを利用することで、騒音を効果的に低減することができる。 Therefore, by changing the arrangement of the existing expansion tank 11d, it is possible to prevent the noise generated from the suction port 32 of the blower fan 3a from diffusing and reduce the noise leaking to the outside. Since the noise leaking to the outside can be reduced simply by disposing the expansion tank 11d so as to be close to and opposed to the suction port 32 of the blower fan 3a, noise can be reduced with an easy structure. Since the expansion tank 11d is a heavy object filled with heating water, which is a fluid, the vibration is attenuated and the sound shielding effect is high. Therefore, the noise can be effectively reduced by using the existing expansion tank 11d. Can be reduced.
また、膨張タンク１１ｄは、送風ファン３ａの吸込み口３２と外装ケース１４との間に配置されたので、送風ファン３ａの吸込み口３２と外装ケース１４との間の空間を有効利用して、送風ファン３ａの吸込み口３２から外部へ漏れる騒音の低減を図ることができる。 Further, since the expansion tank 11d is disposed between the suction port 32 of the blower fan 3a and the outer case 14, the space between the suction port 32 of the blower fan 3a and the outer case 14 is effectively used to blow air. It is possible to reduce noise leaking from the suction port 32 of the fan 3a to the outside.
さらに、膨張タンク１１ｄの外面に断熱材３５が貼り付けられているので、断熱材３５の吸音作用によって送風ファン３ａの吸込み口３２から外部へ漏れる騒音をより一層低減することができる。 Furthermore, since the heat insulating material 35 is affixed to the outer surface of the expansion tank 11d, noise leaking to the outside from the suction port 32 of the blower fan 3a due to the sound absorbing action of the heat insulating material 35 can be further reduced.
次に、前記実施例を部分的に変更した形態について説明する。
［１］前記実施例において、外部熱源機として、燃料電池発電装置について説明したが、これに限定する必要はなく、ヒートポンプ式加熱装置、ガスエンジン等を採用しても良いし、これら以外にも種々の公知なものを採用可能である。
Next, a mode in which the above embodiment is partially changed will be described.
[1] In the above embodiment, the fuel cell power generation device has been described as the external heat source device. However, the present invention is not limited to this, and a heat pump type heating device, a gas engine, or the like may be adopted. Various well-known things are employable.
［２］その他、当業者であれば、本発明の趣旨を逸脱することなく、前記実施例に種々の変更を付加した形態で実施可能であり、本発明はそのような変更形態を包含するものである。 [2] In addition, those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications. It is.
１ 貯湯式給湯暖房装置
２ 貯湯タンク
３ 補助熱源機
３ａ 送風ファン
１１ 温水暖房回路
１１ｄ 膨張タンク
１４ 外装ケース
３２ 吸込み口
３５ 断熱材
DESCRIPTION OF SYMBOLS 1 Hot water storage type hot water supply and heating device 2 Hot water storage tank 3 Auxiliary heat source machine 3a Blower fan 11 Hot water heating circuit 11d Expansion tank 14 Exterior case 32 Suction port 35 Insulation material
Claims (3)
前記暖房回路は、前記暖房用熱媒の膨張を吸収する為の膨張タンクを備え、
前記膨張タンクは、前記補助熱源機の燃焼用送風手段の吸込み口と接近して対向するように配置されたことを特徴とする貯湯式給湯暖房装置。 A hot water storage tank, a combustion-type auxiliary heat source for heating the hot water in the hot water storage tank, a heating circuit in which a heating medium is heated by the hot water in the hot water storage tank or the hot water heated by the auxiliary heat source, and In the hot water storage type hot water supply and heating device provided with an exterior case containing
The heating circuit includes an expansion tank for absorbing expansion of the heating heat medium,
The hot water storage type hot water supply and heating device, wherein the expansion tank is disposed so as to be close to and opposed to a suction port of a combustion air blowing means of the auxiliary heat source device.
The hot water storage type hot water supply / heating device according to claim 1, wherein a heat insulating material is attached to an outer surface of the expansion tank.
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| JPS481178Y1 (en) * | 1970-07-08 | 1973-01-12 | ||
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| JPS62171856U (en) * | 1986-04-21 | 1987-10-31 | ||
| JPH02263046A (en) * | 1989-03-31 | 1990-10-25 | Sanyo Electric Co Ltd | Hot water supply and space heating device |
| JPH07318168A (en) * | 1994-05-24 | 1995-12-08 | Matsushita Electric Ind Co Ltd | Sound prevention device for hot water supplier |
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| JP2003004308A (en) * | 2001-06-20 | 2003-01-08 | Noritz Corp | Combustion device |
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