JPS6023727A - Hot-water floor heating apparatus - Google Patents

Abstract

PURPOSE:To quicken the rise of room temperature and to increase the operating efficiency, by installing a heating source, with which a sensor to prevent incomplete combustion is provided and from which hot-air can be taken out, inside the building, in a hot- water floor heating apparatus. CONSTITUTION:A sensor 11 made of SnO2, to prevent incomplete combustion, is provided in the neighborhood of a combustion surface 10, and an automatic quenching device is connected to the sensor 11. An inversible ventilating fan 14 is provided above a heat exchanger 5. A heating source 1 is connected to a hot-water panel 2 through a forward pipe 3 and a return pipe 4, and both the heating source 1 and the hot-water panel 2 are installed inside the building in order to quicken the rise of temperature. When an operation is started, a circulating pump 8 is actuated to circulate water. At the same time, the ventilating fan is turned round and combustion is started to heat the circulating water. Normally, combustion gas, passing through a combustion chamber 6, transmitting heat to the water in the heat exchanger 5, is exhausted from a vent port 15. During this time, the ventilating fan 14 is turning in the positive direction. The air in the room can be heated in a short time when the fan 14 is turned round in the reverse direction to introduce combustion gas to a hot-air blow-off port 13, passing through a hot-air passage 12.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は屋内に設置する温水床暖房装置の改善に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a hot water floor heating system installed indoors.

従来例の構成とその問題点 従来の温水床暖房装置は第４図に示すような構造であっ
た。図において１は熱源機であり、２は床暖房用の温水
パネルである。熱源１と温水パネル２は往管３と復管４
により連結され温水の循環回路が形成されていた。熱源
１は熱交換器５と燃焼室６とバーナ７と循環ポンプ８と
があって、循環ポンプと熱交換器５とは水管９により連
結されていた。熱源１は通常屋外に設置されて屋内の温
水パネルとは往管３と復管４により連結されていた。Structure of a conventional example and its problems A conventional hot water floor heating system had a structure as shown in FIG. In the figure, 1 is a heat source device, and 2 is a hot water panel for floor heating. Heat source 1 and hot water panel 2 are connected to outgoing pipe 3 and returning pipe 4
They were connected to form a hot water circulation circuit. The heat source 1 includes a heat exchanger 5, a combustion chamber 6, a burner 7, and a circulation pump 8, and the circulation pump and the heat exchanger 5 are connected by a water pipe 9. A heat source 1 is usually installed outdoors and connected to an indoor hot water panel by an outgoing pipe 3 and a returning pipe 4.

上記構成の温水床暖房装置において、まず熱源１を運転
すると循環ポンプ８が回転して水が循環を始めると同時
にバーナが点火され燃焼を開始する。熱交換器５では燃
焼ガスから水への熱伝達が行われて温水ができる。この
温水は温水パネル争へ運ばれ、この面では温水の持つ熱
が室内へ放熱される。放熱によって低温となった水は再
ひ復管４により熱源１へ戻る。以上のような動作により
温水床暖房が行われるが、まず熱源は不完全燃焼を生じ
た場合に危険なので、屋外に設置されているため外気温
まで機器全体の温度が低下している。In the hot water floor heating system having the above configuration, when the heat source 1 is first operated, the circulation pump 8 rotates and water starts to circulate, and at the same time, the burner is ignited and combustion starts. In the heat exchanger 5, heat is transferred from the combustion gas to water to produce hot water. This hot water is transported to a hot water panel, where the heat from the hot water is radiated into the room. The water, which has become low temperature due to heat radiation, returns to the heat source 1 through the recovery pipe 4. Hot water floor heating is performed by the above operation, but first of all, it is dangerous if incomplete combustion occurs in the heat source, so since it is installed outdoors, the temperature of the entire device drops to the outside temperature.

よって運転を開始しても水が所定の温度に達するまでに
５〜１０分間を要していた。また機器から外気への放熱
に加え、排気ガスの熱も捨てていたので機器単体の熱効
率は６０％程度であった。上記システムは循環パイプか
らの放熱も加わるためにトータルの運転効率は５０％程
度に下ってしまうという欠点があった。また温水パネル
は表面温度を３０°Ｃ程度まで上げるのが限界であり、
この比較的低温面から屋内の空気への熱伝達量は床面積
１７７／当り１００　Ｋｃａ　ｌ／ｈ程度になる。よっ
て４．５畳の部屋では伝熱量は１５００　Ｋｃａ　ｌ／
ｈが限界なので室温の立上りが遅く、温水式床暖房の大
きな問題点であった。Therefore, even after starting operation, it took 5 to 10 minutes for the water to reach a predetermined temperature. In addition to dissipating heat from the equipment to the outside air, heat from the exhaust gas was also discarded, so the thermal efficiency of the equipment alone was about 60%. The above system has the disadvantage that the total operating efficiency drops to about 50% due to the addition of heat radiation from the circulation pipe. In addition, the limit for hot water panels is to raise the surface temperature to around 30°C.
The amount of heat transferred from this relatively low-temperature surface to the indoor air is about 100 Kcal/h per 177/1 floor area. Therefore, in a 4.5 tatami room, the amount of heat transferred is 1500 Kcal/
h is the limit, so the room temperature rises slowly, which is a major problem with hot water floor heating.

発明の目的 本発明は前記従来の問題点を改良するもので、不完全燃
焼防止センサを備え、かつ排気ファンを反転させて温風
も取り出せる熱源を屋内に設置して室温の立上りを早め
、運転効率を向上させた温水床暖房装置を提供すること
を目的とする。Purpose of the Invention The present invention aims to improve the above-mentioned conventional problems by installing a heat source indoors that is equipped with a sensor to prevent incomplete combustion and can also take out hot air by reversing the exhaust fan to accelerate the rise in room temperature. The purpose of the present invention is to provide a hot water floor heating system with improved efficiency.

発明の構成 上記目的を実現させるため本発明では、バーナを臨ませ
た燃焼室と、この燃焼室に臨んだ熱交換器と、バーナへ
の燃料供給を制御する不完全燃焼防止センサを燃焼室内
部に設け、燃焼室に連なる温風路と、この温風路先端に
設けた温風吹出口と、熱交換器の排気側に設けた排気フ
ァンとからなる屋内設置熱源と、熱交換器と往管、復管
および循環パイプを介して床面設置の温水パネルを連結
した構成としている。Structure of the Invention In order to achieve the above object, the present invention includes a combustion chamber facing the burner, a heat exchanger facing the combustion chamber, and an incomplete combustion prevention sensor for controlling fuel supply to the burner, which are installed inside the combustion chamber. An indoor heat source consisting of a hot air path connected to the combustion chamber, a hot air outlet installed at the end of this hot air path, and an exhaust fan installed on the exhaust side of the heat exchanger, the heat exchanger and the outgoing pipe. , hot water panels installed on the floor are connected via return pipes and circulation pipes.

実施例の説明 以下本発明の一実施例の温水床暖房装置について第１図
〜第３図を用いて説明する。これらの図において第４図
における部材と同一部材には同一番号を付与している。DESCRIPTION OF EMBODIMENTS A hot water floor heating system according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In these figures, the same members as those in FIG. 4 are given the same numbers.

図において復管４を連結した循環ポンプは水管９によっ
て熱交換器５と連結されている。熱交換器５の下部には
燃焼室６が設けられていてバーナ７が燃焼面１０を垂直
にして取付けである。燃焼面１０の近傍にはＳ　ｎ　Ｏ
Ｐ製の不完全燃焼防止センサ１１が設けてあり図示して
いないが自動消火装置と連結されている。燃焼室６は温
風路１２と連通していて、排ガス通路となり温風吹出口
１３が先端に取付けである。また熱交換器５の上には反
転可能な排気ファン１４が設けられていて、排気口１５
が先端に開口されている。以上の構成で熱源１があり、
往管３と復管４により温水パネル２と連通されて共に屋
内に設置されている。In the figure, a circulation pump connected to a return pipe 4 is connected to a heat exchanger 5 through a water pipe 9. A combustion chamber 6 is provided in the lower part of the heat exchanger 5, and a burner 7 is mounted with the combustion surface 10 vertical. Near the combustion surface 10, S n O
An incomplete combustion prevention sensor 11 made of P is provided and is connected to an automatic fire extinguishing system (not shown). The combustion chamber 6 communicates with a hot air passage 12, which serves as an exhaust gas passage, and a hot air outlet 13 is attached at the tip. Further, a reversible exhaust fan 14 is provided above the heat exchanger 5, and an exhaust port 15
is opened at the tip. With the above configuration, there is heat source 1,
The hot water panel 2 is connected to the hot water panel 2 through an outgoing pipe 3 and a returning pipe 4, and both are installed indoors.

上記構成により運転を開始すると、まず従来同様循環ポ
ンプ８が始動して水を循環させる。同時に排気ファンが
回転して燃焼が開始され温水が作られる。通常は第２図
に示すごとく燃焼ガスは燃焼室６を経て熱交換器５で水
へ熱伝達し低温となって排気口１５より排出される。こ
の際排気ファン１４は正転している。この動作は従来の
温水床暖房装置の熱源とほぼ同様である。第３図では従
来と大きく異なる温風吹出しの動作（以下温風モードと
呼ぶ）を示している。この場合には排気ファン１４を反
転させて燃焼ガスを燃焼室６から温風路１２を経て温風
吹田口１３へ導くことにより室内の空気を急速に加熱す
る。この際循環ポンプは回転させなくとも問題ないが回
転させると循環水が室内の空気との間に熱交換を行ない
徐々にではあるが床面を加熱するので床暖房の予熱とす
ることも可能である。本実施例ではまず熱源は不完全燃
焼防止装置付なので屋内に設置しても異常時（例えば酸
欠状態）に対処できる（自動的に消化）。When the operation is started with the above configuration, the circulation pump 8 is first started to circulate water as in the conventional case. At the same time, the exhaust fan rotates to start combustion and create hot water. Normally, as shown in FIG. 2, the combustion gas passes through the combustion chamber 6, transfers heat to water in the heat exchanger 5, becomes cooled, and is discharged from the exhaust port 15. At this time, the exhaust fan 14 is rotating normally. This operation is almost similar to the heat source of a conventional hot water floor heating system. FIG. 3 shows a hot air blowing operation (hereinafter referred to as hot air mode) that is significantly different from the conventional one. In this case, the exhaust fan 14 is reversed to guide the combustion gas from the combustion chamber 6 through the hot air path 12 to the hot air outlet 13, thereby rapidly heating the air in the room. At this time, there is no problem even if the circulation pump is not rotated, but if it is rotated, the circulating water exchanges heat with the indoor air and gradually heats the floor surface, so it can also be used to preheat the floor heating. be. First, in this embodiment, the heat source is equipped with an incomplete combustion prevention device, so even if it is installed indoors, it can cope with an abnormality (for example, an oxygen deficiency state) (automatically extinguishes the heat).

よって屋内に設置された熱源は外気温まで低下すること
はほとんどなく立上りが早い。また設置工事は非常に簡
易であり工事費の大巾な低減が可能である。また暖房開
始時には温風モードとして排気ファン１４を反転させて
主に温風を室内に吹き出し室内の空気を直接加熱するこ
とにより室温の立上りを早めることができる。床暖房で
は温水温度の上限があり燃焼量が決られていたが、温風
モードでは燃焼ガスは温風として排出され循環水の温度
をほとんど上昇させないので燃焼量は床暖房時よりも増
大させることができる。よって室温の立上りをより一層
高めることができる。室温が１８〜２０’Ｃに上昇した
後は床暖房に切替えて排気ファン１４を正転させ燃焼ガ
スを熱交換器５へ導き循環水へ熱伝達を行わせるがこの
際燃焼量は温風モード時よりも低く設定するので循環水
が３０”Ｃ以上の高温になるのを防止できる。よって床
暖房時は従来と変らず快適な暖房性を得られる。Therefore, a heat source installed indoors hardly ever drops to the outside temperature, and the temperature rises quickly. In addition, the installation work is very simple, and construction costs can be significantly reduced. Furthermore, at the start of heating, the exhaust fan 14 is reversed in warm air mode to mainly blow hot air into the room and directly heat the air in the room, thereby making it possible to accelerate the rise in room temperature. With underfloor heating, there is an upper limit to the hot water temperature and the amount of combustion is determined, but in warm air mode, the combustion gas is discharged as warm air and hardly increases the temperature of the circulating water, so the amount of combustion can be increased compared to underfloor heating. I can do it. Therefore, the rise in room temperature can be further increased. After the room temperature rises to 18 to 20'C, the system switches to floor heating, the exhaust fan 14 rotates normally, the combustion gas is guided to the heat exchanger 5, and heat is transferred to the circulating water, but at this time the combustion amount is set to warm air mode. Since the temperature is set lower than the average temperature, it is possible to prevent the circulating water from reaching a high temperature of 30"C or higher. Therefore, when using floor heating, comfortable heating performance can be obtained as before.

以上述べたごとく１つの排気ファンを正反転させること
により立上りの早い温風暖房と快適な床暖房を可能とす
るものである。また熱源１を屋内に設置しているため、
熱源からの放熱、循環パイプからの放熱等が全て屋内で
行われるため温水床暖房装置としての運転効率はほぼ１
００％になり従来の装置に比べ大幅な省エネルギになる
。一方、床暖房時には屋内に排気ガスを出さず清潔な暖
房を使用者が望む場合には図示していないが排気ファン
１４の吹き出し口からダクトを延長し直接屋外へ排気す
ることもできる。この場合運転効率は１００％にならな
いが熱源からの放熱がないので従来よりは高い。また場
合排気ファンを使用せず排気ガスの自然ドラフトを利用
して煙突により排気することも考えられるが、その径が
大きくなり屋内設置の場合非常に見苦しくなるが本願の
ごとく排気ファンを用いれば小口径の排気ダクトで排気
できるので見苦しさを解消できる。また排気ファンを用
いることにより床暖房時には熱交換器においては排気ガ
スと循環水の間で強制対流熱伝達法の効果を有する。As described above, by reversing one exhaust fan in the normal direction, warm air heating with a quick start-up and comfortable floor heating can be achieved. Also, since heat source 1 is installed indoors,
Since heat radiation from the heat source and heat radiation from the circulation pipes are all performed indoors, the operating efficiency as a hot water floor heating system is approximately 1.
00%, resulting in significant energy savings compared to conventional equipment. On the other hand, if the user desires clean heating without emitting exhaust gas indoors during floor heating, although not shown, a duct can be extended from the outlet of the exhaust fan 14 to directly exhaust the air outdoors. In this case, the operating efficiency is not 100%, but it is higher than before because there is no heat radiation from the heat source. In addition, it is possible to use the natural draft of the exhaust gas without using an exhaust fan to exhaust the exhaust gas through a chimney, but the diameter of the chimney becomes large and it becomes very unsightly when installed indoors. The unsightly appearance can be eliminated by exhausting the air using a diameter exhaust duct. Furthermore, by using an exhaust fan, the heat exchanger has the effect of forced convection heat transfer between exhaust gas and circulating water during floor heating.

（１）不完全燃焼防止センサ付の熱源なので屋内に設置
しても安全である。(1) The heat source is equipped with a sensor to prevent incomplete combustion, so it is safe to install indoors.

（２）熱源を屋内に設置するので、消火時外気温まで熱
源の温度が低下しない。よって運転時循環水の立上りが
早い。(2) Since the heat source is installed indoors, the temperature of the heat source does not drop to the outside temperature when the fire is extinguished. Therefore, the circulating water rises quickly during operation.

（３）排気ファンにより室内の空気を直接加熱すること
が可能であり、床暖房時よりも燃焼量を高められるので
暖房開始時に室温の立上りを従来よりも早くできる。(3) The exhaust fan can directly heat the air in the room, increasing the amount of combustion compared to floor heating, so the room temperature can rise faster than before when heating starts.

（４）熱源が屋内にあるので床暖房の運転効率は１００
％近くまで上げられる。(4) Since the heat source is indoors, the operating efficiency of floor heating is 100.
It can be raised to almost %.

（５）排気ファンを用いているので床暖房時には小口径
の排気ダクトによって屋外に排気することもできる。(5) Since an exhaust fan is used, the air can be exhausted outdoors through a small-diameter exhaust duct during floor heating.

（６）排気ファンを用いているので床暖房時に強制対流
熱伝達によって熱交換器の効率を高めることができる。(6) Since an exhaust fan is used, the efficiency of the heat exchanger can be increased by forced convection heat transfer during floor heating.

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

第１図は本発明の温水床暖房装置の一部断面構成図、第
２図は同装置の通常運転時の燃焼ガスの流れを模式化し
た構成図、第３図は同じく温風モード時の燃焼ガスと空
気の流れの模式化した構成図、第４図は従来の床暖房装
置の構成図である。 １・・・・・・熱源、２・・・・・・温水パネル、３・
・・・・・往管、４・・・・・・復管、５・・・・・・
熱交換器、６・・・・・・燃焼室、７・・・・・・バー
ナ、８・・・・・・循環ポンプ、１１・・・・・・不完
全燃焼防止センサ、１２・・・・・・温風路、１３・・
・・・・温風吹出口、１４・・・・・・排気ファン。 代理人の氏名　弁理士　中　尾　敏　男°ほか１名第１
図 ４ 第２図 １４ 第３図 ／４Fig. 1 is a partial cross-sectional configuration diagram of the hot water floor heating system of the present invention, Fig. 2 is a schematic diagram illustrating the flow of combustion gas during normal operation of the system, and Figure 3 is also a diagram in hot air mode. FIG. 4 is a schematic block diagram of the flow of combustion gas and air, and is a block diagram of a conventional floor heating system. 1...Heat source, 2...Hot water panel, 3.
...Outbound, 4...Return, 5...
Heat exchanger, 6... Combustion chamber, 7... Burner, 8... Circulation pump, 11... Incomplete combustion prevention sensor, 12...・・・Warm air path, 13...
... Warm air outlet, 14 ... Exhaust fan. Name of agent: Patent attorney Toshio Nakao ° and 1 other person No. 1
Figure 4 Figure 2 14 Figure 3/4

Claims (1)

【特許請求の範囲】[Claims] バーナを臨ませた燃焼室と、この燃焼室に臨んだ熱交換
器と、前記燃焼室に設けられ前記バーナへの燃料供給を
制御する不完全燃焼防止センサーと、前記燃焼室に連な
る温風路と、この温風路先端に設けた温風吹出口と、前
記熱交換器の排気側に設けた反転可能な排気ファンとか
らなる屋内設置熱源と、前記熱交換器と往管、復管およ
び循環ポンプを介して連結され床面に設置される温水パ
ネルからなる温水床暖房装置。A combustion chamber facing the burner, a heat exchanger facing the combustion chamber, an incomplete combustion prevention sensor provided in the combustion chamber to control fuel supply to the burner, and a hot air path connected to the combustion chamber. , an indoor heat source consisting of a hot air outlet provided at the tip of the hot air path, and a reversible exhaust fan provided on the exhaust side of the heat exchanger; A hot water floor heating system consisting of hot water panels connected via a pump and installed on the floor.