JP4084830B2 - Underfloor heating system - Google Patents

Underfloor heating system Download PDF

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JP4084830B2
JP4084830B2 JP2007061760A JP2007061760A JP4084830B2 JP 4084830 B2 JP4084830 B2 JP 4084830B2 JP 2007061760 A JP2007061760 A JP 2007061760A JP 2007061760 A JP2007061760 A JP 2007061760A JP 4084830 B2 JP4084830 B2 JP 4084830B2
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room
underfloor
floor
opening
radiator
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JP2007147281A (en
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大介 朝桐
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Sekisui Chemical Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

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Description

本発明は、部屋の床下に設置された床下放熱器で部屋全体を暖めるのに好適な床下暖房システムに関する。   The present invention relates to an underfloor heating system suitable for heating an entire room with an underfloor radiator installed under the floor of the room.

従来の床下暖房システムとして、部屋の床下に床下放熱器を設置するとともに、部屋の床面に開口を設け、床下放熱器からの熱で床下空間を加熱することにより部屋の床面を暖める一方、床下空間の加熱された空気を開口を介して部屋内部に取り入れて、部屋の室内空気を暖めるようにしたものが提案されている（例えば、特許文献１、特許文献２参照）。
特開２００１−２０１０７５号公報 特開２００１−１５３３８０号公報 As a conventional underfloor heating system, an underfloor radiator is installed under the floor of the room, an opening is provided in the floor of the room, and the floor of the room is heated by heating the underfloor space with heat from the underfloor radiator, There has been proposed a system in which heated air in an underfloor space is taken into a room through an opening to warm room air in the room (see, for example, Patent Document 1 and Patent Document 2).
JP 2001-201075 A JP 2001-153380 A

しかしながら、上記従来の技術では、同一の部屋に対して、部屋の床面を暖めると同時に、床下空間の加熱された空気を開口を介して部屋内部に循環させているので、室内空気の温度が高くなりすぎる傾向があって、省エネルギーの点で問題がある。   However, in the above-described conventional technique, for the same room, the floor surface of the room is heated and at the same time the heated air in the underfloor space is circulated through the opening through the interior of the room. It tends to be too high, which is problematic in terms of energy saving.

エアコンが普及した今日では、リビングルーム等の居室にはエアコンが殆ど設置され、エアコンは主暖房に、床下暖房は補助暖房にそれぞれ位置付けられている。このような状況の下で、リビングルーム等の居室に対して、床面を暖めると同時に、床下空間の加熱空気を開口を介して部屋内部に循環させる方式の床下暖房システムは、補助暖房としては過剰設備となっている。   Nowadays, air conditioners are widely used in living rooms such as living rooms, where air conditioners are positioned as main heating, and underfloor heating is positioned as auxiliary heating. Under such circumstances, an underfloor heating system of a system that circulates heated air in the underfloor space through the opening and the interior of the room at the same time as a living room such as a living room is an auxiliary heating. Excessive equipment.

本発明は、床下暖房システム全体の省エネルギーを図ることを課題とする。   This invention makes it a subject to aim at the energy saving of the whole underfloor heating system.

上記課題を達成するために、本発明は、床面に開口が設けられた開口有りの部屋と、床面に開口が設けられていない開口無しの部屋とを備え、前記開口有りの部屋の床下には前記開口の下方付近に床下放熱器が設置され、前記開口を透過する前記床下放熱器からの熱で当該開口有りの部屋の室内空気を暖める一方、前記開口無しの部屋の床下にも床下放熱器が設置され、前記床下放熱器からの熱で床下空間を加熱することにより、当該開口無しの部屋の床面を床下側から暖めることを特徴としている。   To achieve the above object, the present invention comprises a room with an opening in which an opening is provided on the floor surface and a room without an opening in which no opening is provided on the floor surface, and the floor under the room with the opening. Has an underfloor radiator near the opening, and heats the room air in the room with the opening with heat from the underfloor radiator that passes through the opening, while underfloor in the room without the opening. A radiator is installed, and the floor surface of the room without the opening is heated from below the floor by heating the underfloor space with heat from the underfloor radiator.

上記構成によれば、開口有りの部屋では、その室内空気が、開口有りの部屋の床下に設置された床下放熱器からの熱で暖められる。開口有りの部屋の床面には開口が設けられているので、床下放熱器からの熱は開口を透過し、開口有りの部屋の室内空気を容易に暖めることができる。   According to the above configuration, in a room with an opening, the room air is warmed by heat from the underfloor radiator installed under the floor of the room with an opening. Since the opening is provided in the floor surface of the room with the opening, the heat from the under-floor radiator passes through the opening, and the room air in the room with the opening can be easily warmed.

一方、開口無しの部屋では、その床面が、開口無しの部屋の床下に設置された床下放熱器によって床下側から加熱されて暖められる。   On the other hand, in a room without an opening, the floor surface is heated and heated from below the floor by an underfloor radiator installed under the floor of the room without an opening.

このように、上記構成においては、開口有りの部屋はその室内空気だけが、開口無しの部屋はその床面だけが各床下放熱器によってそれぞれ暖められているため、部屋の温度が高くなりすぎることはなく、省エネルギーを図ることができる。   Thus, in the above configuration, the room temperature becomes too high because only the room air is heated in the room with the opening, and only the floor surface is heated in the room without the opening by the under-floor radiator. No, it can save energy.

そして本発明は、前記開口有りの部屋として廊下や洗面所等の非居室が、前記開口無しの部屋として居室が設定されていることを特徴としている。   The present invention is characterized in that a non-living room such as a corridor or a washroom is set as the room with the opening, and a living room is set as the room without the opening.

廊下や洗面所等の非居室は人が長時間居ることはないが、冬場などに非居室内の室温はできるだけ速く上昇させる必要があるので、床面の開口を通過する床下放熱器からの熱で非居室内の空気を暖める。また、リビングなどの居室は人が長時間居り、特に人が床面に直に座ったり床面に寝転んだりするので、床面を床下放熱器で床下側から暖めるようにする。   In non-occupied rooms such as corridors and washrooms, people do not stay for a long time, but the room temperature in non-occupied rooms must be raised as quickly as possible in winter, so the heat from the underfloor radiator that passes through the floor opening To warm the air in the non-living room. Also, in living rooms such as living rooms, people stay for a long time, especially because people sit directly on the floor or lie down on the floor, so that the floor is warmed from under the floor with an underfloor radiator.

また、上記発明において、前記開口無しの部屋の床下に設置された床下放熱器はファンを有し、前記ファンを回転させながら、当該開口無しの部屋の床下空間を加熱することを特徴としている。   In the above invention, the underfloor radiator installed under the floor of the room without the opening has a fan, and the underfloor space of the room without the opening is heated while rotating the fan.

このようにファンを回転させると、床下放熱器で加熱された床下空間の空気が拡散され、開口無しの部屋の床面を効果的に暖めることができる。   When the fan is rotated in this manner, the air in the underfloor space heated by the underfloor radiator is diffused, and the floor surface of the room without an opening can be effectively warmed.

本発明によれば、開口有りの部屋はその室内空気だけを、開口無しの部屋はその床面だけをそれぞれ床下放熱器で暖める構成であるから、各部屋が暖まりすぎることはなく、省エネルギーを図ることができる。   According to the present invention, the room with an opening is configured to heat only the room air, and the room without an opening is configured to heat only the floor surface with the under-floor radiator, so that each room is not overheated and energy saving is achieved. be able to.

以下、本発明の実施例を図面に従って説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１および図２は本発明に係る床下暖房システムの要部構成を示しており、図１はガラリ有りの部屋１の床下断面図、図２はガラリ無しの部屋２の床下断面図である。ここで、ガラリ有りの部屋１は開口有りの部屋を、ガラリ無しの部屋２は開口無しの部屋をそれぞれ構成している。   1 and 2 show the configuration of the main part of the underfloor heating system according to the present invention. FIG. 1 is a cross-sectional view below the floor 1 of the room 1 with a louver, and FIG. 2 is a cross-sectional view below the floor 2 of the room 2 without a louver. Here, the room 1 with a louver constitutes a room with an opening, and the room 2 without a louver constitutes a room without an opening.

ガラリ有りの部屋１には、図１に示すように、床面３に開口であるガラリ４が設けられ、ガラリ有りの部屋１の内部とガラリ有りの部屋１の床下空間５とは、ガラリ４を介して連通されている。また、床下空間５には、建物の基礎部分６上に輻射式床下放熱器７が設置されている。この輻射式床下放熱器７はガラリ４の下方付近に配置されている。   As shown in FIG. 1, the room 1 with the louver is provided with a louver 4 that is an opening on the floor 3. The interior of the room 1 with the louver and the underfloor space 5 of the room 1 with the louver are the louver 4. It is communicated through. In the underfloor space 5, a radiant underfloor radiator 7 is installed on the foundation portion 6 of the building. This radiation type underfloor heat radiator 7 is arranged near the lower part of the louver 4.

図示してないが、輻射式床下放熱器７は箱型形状をなし、その内部には、蓄熱体としてのレンガと、そのレンガを加熱する電気ヒータとが設けられている。そして、電気ヒータに通電することによりレンガが加熱され、所定時間、レンガに熱を蓄えておくことができる。   Although not shown, the radiation type underfloor radiator 7 has a box shape, and a brick as a heat accumulator and an electric heater for heating the brick are provided therein. The brick is heated by energizing the electric heater, and heat can be stored in the brick for a predetermined time.

一方、ガラリ無しの部屋２には、図２に示すように、床面８に図１のようなガラリ４は設けられてないが、床下空間９には、建物の基礎部分６上にファン付き床下放熱器１０が設置されている。   On the other hand, as shown in FIG. 2, the room 2 without a louver is not provided with the louver 4 as shown in FIG. An underfloor radiator 10 is installed.

図示してないが、ファン付き床下放熱器１０は、その内部に、発熱体、ファンおよびモータが設けられ、モータでファンを回転させることにより、発熱体で加熱された床下空気を床下空間９内に拡散することができる。   Although not shown in figure, the underfloor radiator 10 with a fan is provided with a heating element, a fan, and a motor inside, and the fan is rotated by the motor so that the underfloor air heated by the heating element is placed in the underfloor space 9. Can diffuse.

ここで、ガラリ有りの部屋１としては、廊下、洗面所、脱衣室など人が長時間居ない非居室があり、また、ガラリ無しの部屋２としては、リビングルームなど人が長時間居る居室がある。   Here, there is a non-living room where no people are present for a long time, such as a corridor, a washroom, a dressing room, etc., and a non-living room 2 is a living room such as a living room, for example. is there.

次に、本実施例の作用について説明する。   Next, the operation of this embodiment will be described.

暖房時、ガラリ有りの部屋１においては、熱としての輻射式床下放熱器７からの輻射熱（図１の矢印Ａ）がガラリ４を介してガラリ有りの部屋１の内部に入射し、ガラリ有りの部屋１の室内空気を加熱する。   During heating, in the room 1 with the louver, the radiant heat (arrow A in FIG. 1) from the radiant underfloor radiator 7 as heat enters the inside of the room 1 with the louver through the louver 4, and there is a louver. The room air in room 1 is heated.

廊下、洗面所、脱衣室などの非居室であるガラリ有りの部屋１には、人は長時間居ることはなく、例えば脱衣室は着替えるときだけであるので、その着替え時にガラリ有りの部屋１の室内空気を素速く暖めることができればよい。本実施例では、ガラリ有りの部屋１が輻射式床下放熱器７からの輻射熱で加熱されるため、ガラリ有りの部屋１の室内空気を素速く暖めることが可能である。   In the room 1 with a gallery, which is a non-residential room such as a corridor, a washroom, and a dressing room, people do not stay for a long time. For example, the dressing room is only used when changing clothes, so the room 1 with a gallery when changing clothes is used. What is necessary is just to be able to warm indoor air quickly. In the present embodiment, the room 1 with the louver is heated by the radiant heat from the radiant underfloor radiator 7, so that the room air in the room 1 with the louver can be quickly heated.

一方、リビングルームなどの居室であるガラリ無しの部屋２には、人は長時間居り、例えばリビングルームの床面に直に座ったり寝転がったりするため、リビングルームの床面が暖められていると快適である。本実施例では、ファン付き床下放熱器１０でガラリ無し部屋２の床下空間９を加熱しながら、ファン付き床下放熱器１０のファンを回転させているので、床下空間９内の空気は拡散され（図２の矢印Ｂ）、ガラリ無し部屋２の床面８を床下側から効率的に暖めることができる。また、ガラリ無しの部屋２にはエアコンが設けられており、ガラリ無しの部屋２の室内空気はエアコンによって暖められている。   On the other hand, in a room 2 without a garage, such as a living room, a person stays for a long time, for example, sitting on the floor of the living room or lying down, so that the floor of the living room is warmed Comfortable. In the present embodiment, the fan in the underfloor radiator 10 with fan is rotated while the underfloor radiator 9 in the non-glazed room 2 is heated by the underfloor radiator 10 with fan, so that the air in the underfloor space 9 is diffused ( The arrow B) in FIG. 2 can efficiently warm the floor surface 8 of the non-glare room 2 from below the floor. Moreover, the air conditioner is provided in the room 2 without the louver, and the room air in the room 2 without the louver is warmed by the air conditioner.

なお、ファン付き床下放熱器１０でガラリ無し部屋２の床面８を暖める場合、床面８の構成部材と床下空間８内の空気は一定の熱容量を有しているので、床面８が十分に暖まるには時間が掛かる。この場合、ガラリ無し部屋２を使用する際に、タイマーを用いてファン付き床下放熱器１０を事前に作動させて、床面８を暖めておくようにすればよい。   In addition, when the floor surface 8 of the floorless radiator 2 with a fan is warmed by the fan-less floor radiator 10, the floor surface 8 is sufficient because the components of the floor surface 8 and the air in the underfloor space 8 have a certain heat capacity. It takes time to warm up. In this case, when the room 2 without a louver is used, the floor underside radiator 10 with a fan may be operated in advance using a timer to warm the floor 8.

このように、本実施例によれば、ガラリ有りの部屋１は、その室内空気が、ガラリ４を透過する輻射式床下放熱器７からの輻射熱で加熱されて暖められ、ガラリ無しの部屋２は、その床面８がファン付き床下放熱器１０で加熱され暖められる。すなわち、ガラリ有りの部屋１とガラリ無しの部屋２は各々別個の床下放熱器で暖められているので、ガラリ有りの部屋１とガラリ無しの部屋２の内部が暖まりすぎることはなく、省エネルギーを達成できる。   As described above, according to this embodiment, the room 1 with the louver is heated by the radiant heat from the radiant underfloor radiator 7 that transmits the louver 4 and the room 2 without the louver is The floor surface 8 is heated and heated by the underfloor radiator 10 with a fan. In other words, the room 1 with the louver and the room 2 without the louver are each heated by separate under-floor radiators, so that the interior of the room 1 with the louver and the room 2 without the louver are not overheated, and energy saving is achieved. it can.

また、ガラリ無しの部屋２に主暖房としてエアコンが設けられている場合、ガラリ無しの部屋２はその床面８が床下のファン付き床下放熱器１０で暖められるだけで、部屋の室内空気はエアコンによって暖められるので、ファン付き床下放熱器１０を補助暖房として利用したときに過剰設備になることはない。   Further, when an air conditioner is provided as a main heating in the room 2 without the louver, the room surface 8 of the garage-free room 2 is merely heated by the underfloor radiator 10 with a fan under the floor, and the room air in the room is air conditioned. Therefore, when the underfloor radiator with a fan 10 is used as auxiliary heating, there is no excess facility.

次に、本発明に係る床下暖房システムが設置された建物の一例について説明する。   Next, an example of a building in which the underfloor heating system according to the present invention is installed will be described.

図３においては、洗面所１１の床面と廊下１２の床面にガラリ１３，１４がそれぞれ設けられ、洗面所１１の床下、廊下１２の床下、キッチン１５の床下、およびリビングルーム１６の床下にそれぞれ輻射式床下放熱器１７〜２１がそれぞれ設置されている。また、リビングルーム１６にはエアコン２２が設けられている。なお、輻射式床下放熱器１７〜２１は、図１に示した輻射式床下放熱器７と同じものである。   In FIG. 3, galleys 13 and 14 are respectively provided on the floor surface of the washroom 11 and the floor surface of the hallway 12, and below the floor of the washroom 11, the floor of the hallway 12, the floor of the kitchen 15, and the floor of the living room 16. Radiation type underfloor radiators 17 to 21 are respectively installed. The living room 16 is provided with an air conditioner 22. The radiant underfloor radiators 17 to 21 are the same as the radiant underfloor radiator 7 shown in FIG.

図３の床下暖房システムにおいて、洗面所１１はガラリ１３を透過する輻射式床下放熱器１７からの輻射熱で、廊下１２はガラリ１４を透過する輻射式床下放熱器１８からの輻射熱でそれぞれ暖められる。一方、キッチン１５は輻射式床下放熱器１９からの輻射熱でキッチン１５の床面が床下側から、リビングルーム１６は輻射式床下放熱器２０，２１からの輻射熱でリビングルーム１６の床面が床下側からそれぞれ暖められる。また、リビングルーム１６の室内空気はエアコン２２によって暖められている。   In the underfloor heating system of FIG. 3, the washroom 11 is heated by radiant heat from the radiant underfloor radiator 17 that passes through the louver 13, and the corridor 12 is heated by radiant heat from the radiant underfloor radiator 18 that passes through the louver 14. On the other hand, the kitchen 15 is radiant heat from the radiant underfloor radiator 19 and the floor surface of the kitchen 15 is from below the floor, and the living room 16 is radiant heat from the radiant underfloor radiators 20 and 21 and the floor surface of the living room 16 is below the floor. Each is warmed from. The room air in the living room 16 is warmed by the air conditioner 22.

図４は、本発明に係る床下暖房システムが設置された建物の他の例を示している。   FIG. 4 shows another example of a building in which the underfloor heating system according to the present invention is installed.

図４においては、洗面所１１の床面と廊下１２の床面にガラリ１３，１４がそれぞれ設けられ、洗面所１１の床下、廊下１２の床下、およびキッチン１５の床下にラジエータ（床下放熱器）２３〜２５がそれぞれ設置され、リビングルーム１６の床下にファン付き床下放熱器２６，２７がそれぞれ設置されている。また、リビングルーム１６にはエアコン２２が設けられている。   In FIG. 4, galleys 13 and 14 are respectively provided on the floor surface of the washroom 11 and the floor surface of the hallway 12, and a radiator (underfloor radiator) is provided below the floor of the washroom 11, under the hallway 12, and under the kitchen 15. 23 to 25 are respectively installed, and under-floor radiators 26 and 27 with fans are respectively installed under the floor of the living room 16. The living room 16 is provided with an air conditioner 22.

建物の外には給湯装置２８が設置されている。そして、給湯装置２８からの給湯配管２９にラジエータ２３〜２５がシリーズに接続されている。また、給湯装置２８からの給湯配管３０にファン付き床下放熱器２６，２７がシリーズに接続されている。   A hot water supply device 28 is installed outside the building. And the radiators 23-25 are connected to the hot water supply pipe 29 from the hot water supply apparatus 28 in series. In addition, underfloor radiators 26 and 27 with fans are connected to a hot water supply pipe 30 from the hot water supply device 28 in series.

図４の床下暖房システムにおいて、洗面所１１はガラリ１３を透過するラジエータ２３からの輻射熱で、廊下１２はガラリ１４を透過するラジエータ２４からの輻射熱でそれぞれ暖められる。キッチン１５はラジエータ２５からの輻射熱でキッチン１５の床面が床下側から暖められている。   In the underfloor heating system of FIG. 4, the washroom 11 is heated by the radiant heat from the radiator 23 that passes through the gallery 13, and the corridor 12 is heated by the radiant heat from the radiator 24 that passes through the gallery 14. In the kitchen 15, the floor surface of the kitchen 15 is heated from below the floor by the radiant heat from the radiator 25.

リビングルーム１６は、その床面が、ファン付き床下放熱器２６，２７によって暖められる。すなわち、ファン付き床下放熱器２６，２７は、その発熱体でリビングルーム１６の床下空気を加熱するとともに、その加熱した床下空気を回転するファンで拡散し、これにより、リビングルーム１６の床面を床下側から効率的に暖めている。   The floor surface of the living room 16 is heated by the underfloor radiators 26 and 27 with fans. That is, the underfloor radiators 26 and 27 with fans heat the underfloor air of the living room 16 with the heating elements, and diffuse the heated underfloor air with the rotating fan, so that the floor surface of the living room 16 is spread. Warm up efficiently from under the floor.

また、リビングルーム１６の室内空気は、エアコン２２によって暖められている。   The room air in the living room 16 is warmed by the air conditioner 22.

ガラリ有りの部屋の床下断面図である。It is a floor under sectional view of a room with a louver. ガラリ無しの部屋の床下断面図である。It is a cross-sectional view below the floor of a room without a louver. 本発明に係る床下暖房システムが設置された建物の一例を示す平面図である。It is a top view which shows an example of the building in which the underfloor heating system which concerns on this invention was installed. 本発明に係る床下暖房システムが設置された建物の他の例を示す平面図である。It is a top view which shows the other example of the building in which the underfloor heating system which concerns on this invention was installed.

符号の説明Explanation of symbols

１ ガラリ有りの部屋（開口有りの部屋）
２ ガラリ無しの部屋（開口無しの部屋）
３，８ 床面
４，１３，１４ ガラリ（開口）
５，９ 床下空間
７，１７〜２１ 輻射式床下放熱器
１０，２６，２７ ファン付き床下放熱器
１１ 洗面所
１２ 廊下
１５ キッチン
１６ リビングルーム
２２ エアコン
２３〜２５ ラジエータ
２８ 給湯装置 1 Room with louver (room with opening)
2 Room without garage (room without opening)
3,8 Floor 4,13,14 Gallery (opening)
5,9 Underfloor space 7,17-21 Radiation type underfloor radiator 10,26,27 Underfloor radiator with fan 11 Washroom 12 Corridor 15 Kitchen 16 Living room 22 Air conditioner 23-25 Radiator 28 Hot water supply device

Claims (2)

床面に開口が設けられた開口有りの部屋としての廊下や洗面所等の非居室と、床面に開口が設けられていない開口無しの部屋としての居室とを備え、
前記開口有りの部屋の床下には前記開口の下方付近に床下放熱器が設置され、前記開口を透過する前記床下放熱器からの熱で当該開口有りの部屋の室内空気を暖める一方、
前記開口無しの部屋の床下にも床下放熱器が設置され、前記床下放熱器からの熱で床下空間を加熱することにより、当該開口無しの部屋の床面を床下側から暖めることを特徴とする床下暖房システム。 A non-room such as a corridor or a washroom as an open room with an opening on the floor, and a non-open room without an opening on the floor,
Under the floor of the room with the opening, an underfloor radiator is installed near the lower part of the opening, and the room air with the opening is heated by the heat from the underfloor radiator that passes through the opening,
An underfloor radiator is also installed under the floor of the room without the opening, and the floor surface of the room without the opening is heated from below the floor by heating the underfloor space with heat from the underfloor radiator. Underfloor heating system. 前記開口無しの部屋の床下に設置された床下放熱器はファンを有し、前記ファンを回転させながら、当該開口無しの部屋の床下空間を加熱することを特徴とする請求項１に記載の床下暖房システム。
The underfloor radiator according to claim 1, wherein the underfloor radiator installed under the floor of the room without opening has a fan, and heats the underfloor space of the room without opening while rotating the fan. Heating system.
JP2007061760A 2007-03-12 2007-03-12 Underfloor heating system Expired - Lifetime JP4084830B2 (en)

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Publication number Priority date Publication date Assignee Title
JP2016161213A (en) * 2015-03-02 2016-09-05 積水化学工業株式会社 Underfloor air conditioning system and building

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JPS5526736Y2 (en) * 1976-05-11 1980-06-26
JPS6136627A (en) * 1984-07-27 1986-02-21 Natl House Ind Co Ltd Heat accumulation device
JPH028631A (en) * 1988-06-27 1990-01-12 Matsushita Electric Works Ltd Thermal accumulation type floor heating device
JP2000005464A (en) * 1998-06-23 2000-01-11 Hasegawa Hamono Kk Cutting tool protector
JP2000193256A (en) * 1998-12-28 2000-07-14 Shisutekku Kankyo Kenkyusho:Kk Radiation heating system
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Publication number Priority date Publication date Assignee Title
JP2016161213A (en) * 2015-03-02 2016-09-05 積水化学工業株式会社 Underfloor air conditioning system and building

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