JP2006170532A - Concealed hot water heating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide comfortable indoor heating with a nice and warm feeling by arranging a hot water heating system in a room in a concealed form not exposed to the room, suppressing cold air flowing down along a window, and evenly warming the room by natural convection heat and radiation heat from four sides of the room. <P>SOLUTION: Hot water heated by a heat source machine 1 in one place is inputted and circulated in a floor radiation part He1 in a form concealed and embedded in a floor along the window, a wall radiation part He2 in a form concealed and embedded in a wall, and a ceiling radiation part He3 in a form concealed and embedded in a ceiling arranged in the room by a circulating pump 2 via a flexible hot water pipe 3 made of synthetic resin. The room is gently warmed from the four sides by radiation heat, conduction heat, and convection heat. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hot water heating system in which a heat radiating portion is arranged on an indoor floor, wall, and ceiling.

  2. Description of the Related Art Conventionally, various methods have been adopted or proposed as means for heating by passing warm water from a heat source device to a radiator disposed at an appropriate position in a room.

[Conventional example 1 (FIG. 8)]
FIG. 8 is an explanatory diagram of Patent Document 1, and the hot water heating apparatus of Conventional Example 1 shown in FIG. 8 uses both hot air heating and floor heating in a single hot water circuit. As shown in the figure, from one heat source unit to a radiator composed of a hot water heat exchanger and a blower fan, the outgoing side hot water path and the return side hot water path are connected, and the floor panel with the radiating pipe embedded The side hot water path and the return side hot water path are connected, and a hot water heat exchanger is interposed in the middle of the circulation path. In the heat exchanger, the outer side of the forward side hot water path is used as the return side hot water path, and the hot water on the forward side is Heat is exchanged with warm water on the return side, and the floor panel is heated with warm water lowered to an appropriate temperature.

  And, in the floor heating panel, the high-temperature forward hot water of about 80 ° C. supplied from the heat source machine is heat-exchanged with the return-side hot water whose temperature has been lowered via the heat radiating pipe by the hot water heat exchanger, The temperature at the outlet side of the hot water heat exchanger, that is, the temperature at the inlet side of the heat radiating pipe is lowered, so that hot water can be supplied at a desired temperature of about 60 ° C., and the temperature of the return side hot water to the heat source machine is The temperature on the outlet side of the heat source rises, and the fuel efficiency of the heat source machine is improved. A single heat source machine enables high-temperature hot air heating at about 80 ° C. and low-temperature floor heating at about 60 ° C. .

[Conventional example 2 (FIG. 9)]
FIG. 9 is an explanatory diagram of Conventional Example 2 shown in Patent Document 2. In Conventional Example 2, as shown in FIG. 9, a hot water pipe is incorporated in a wall material having a temperature control function and mainly composed of volcanic ash shirasu. Panels with tiles, gypsum boards, etc. stuck to the outer surface of the wall material with hot melt glue, the wall surface of the panel as the inner surface, and hot water is circulated and supplied to the hot water pipe inside the panel from the outside The wall is heated with hot water.

[Conventional example 3 (FIG. 10)]
FIG. 10 is an explanatory view of Conventional Example 3 shown in Patent Document 3, and in Conventional Example 3, a built-in type hot water heating device is arranged on the wall surface under the window of the bay window.
That is, as shown in FIG. 10, a recess is formed on the concrete wall surface on the bay window floor, and a spacer is disposed on the front side wall surface through a heat insulating material. A panel type radiator with fins on the side is arranged, and a swash plate for introducing cold air is arranged below the radiator, and heat is supplied to the radiator with a hot water pipe. It can be accommodated in the formed recess and can be installed without protruding substantially from the wall.
Japanese Patent Laid-Open No. 11-166743 JP 2004-163051 A JP 11-108379 A

  In the hot water heater of Conventional Example 1, floor heating and blower heating can be carried out indoors with a single heat source device, but the floor heating is not hot and uncomfortable to the user. Therefore, it is necessary to arrange a separate hot water heat exchanger, and the panel shapes are diverse, so there are problems in terms of construction, management, and cost. Since it is large, it causes room temperature spots (unevenness), house dust roll-up, uncomfortable feeling of hot air, and harsh sound.

Moreover, although the hot water heating of the conventional example 2 is wall surface heating and radiant heat heating, there is a problem in terms of construction and cost in continuous formation on the wall surface to make a radiant heat surface that suppresses convection, As a finishing material, a vinyl cloth that is usually used cannot be used, and the finishing material is limited.
And since it is radiation heating from a wall surface, the unpleasant cold airflow (cold draft) which descend | falls along a window surface generate | occur | produces.

Moreover, in the built-in type hot water heating apparatus of Conventional Example 3, the hot water pipe permeates oxygen in order to suppress corrosion caused by oxygen contained in the hot water of the metal radiator as in the case of normal metal panel piping. It is necessary to use expensive resin pipes or copper pipes that are not allowed to be used, and it is also necessary to adopt an expensive hermetic type that prevents oxygen from being mixed in the hot water boiler, resulting in problems in terms of cost and management.
Moreover, because of the built-in arrangement, a space in front of the bay window floor is necessary, the adoption room is restricted, and a housing other than the heating device, exterior, heat insulation, etc. are formed to conceal the radiator. There is also a cost associated with this.

  The present invention provides an epoch-making hot water heating system that can reasonably solve or improve the problems of conventional room heating, and can suppress the cold draft discomfort on the side of the window. The room is provided with heating, heat is also radiated from the wall surface and ceiling surface, and there is no forced air blowing. The room is uniformly warmed by natural convection heat and radiant heat, and a comfortable thermal environment can be provided.

In the present invention, for example, as shown in FIG. 1 (A), hot water heated by a single heat source machine (boiler) 1 is circulated by a circulation pump 2 through a flexible hot water pipe 3 made of a synthetic resin. Arranged into the floor, the floor heat radiation part He1 in the concealment embedded form on the floor, the wall heat radiation part He2 in the concealment embedding form on the wall, and the ceiling heat radiation part He3 in the concealment embedding form on the ceiling, radiated heat, conduction It is a hot water heating system that comfortably warms the room with heat and convection heat.
In addition, the meaning of “window” has a broad meaning indicating the whole opening of a room where a cold draft occurs, including a balcony sliding door.

In this case, in the wall heat radiating portion He2 and the ceiling heat radiating portion He3, for example, as shown in FIGS. 6 and 7, the heat radiating panel 20 having the heat radiating hot water pipes disposed on the wall surface or the ceiling surface is disposed. If it is covered with the finishing materials 23, 36, etc., it becomes a concealed buried form, and in the floor heat radiating portion He1, for example, the grating lid 4a is placed on the upper surface of the floor radiator 5 arranged in the floor slab pit P as shown in FIG. If it arrange | positions, it will become a concealment buried form.
Moreover, the lid | cover which makes the floor thermal radiation part He1 embed | buried form should just be taken as the lid | cover form which can raise the warm air from the floor radiator 5 on a floor surface, and should just be a lid | cover of a cocoon child form.

Accordingly, in the present invention, since each of the heat dissipating parts He1, He2, and He3 heated with warm water is in a concealed form, the indoor space is not impaired, and the aesthetic appearance is not impaired. Even with circulation in an effective hot water of about 80 ° C., the user does not have to worry about burns.
In addition, the room is naturally and gently heated by the radiation, conduction, and convection of heat from the floor, from the wall, and from the ceiling surface. There is no comfortable thermal environment.
Moreover, since the floor heat radiating portion He1 exists along the window, it is possible to suppress the influence on the room user of the cold air (cold draft) descending along the window.
In other words, the influence of cold draft on the window side is suppressed, heat can be radiated from any direction such as floor, wall, ceiling, there is no forced ventilation of fans etc., the room is heated uniformly with natural convection heat and radiant heat, Provide warm and comfortable room heating.

Further, in the hot water heating system of the present invention, for example, as shown in FIG. 1B, it is preferable that the fall prevention handrail 10 of the window Wi be a window heat radiating portion He4 through which hot water flows and circulates.
Usually, if the distance from the upper end surface of the floor to the upper end surface of the window frame sill is below a standard (standard: 1100 mm), a safety handrail for preventing a fall will be arranged.
In this case, as shown in FIG. 4, for example, the safety handrail 10 connects the upper handrail 10a and the lower handrail 10a ′ of the tubular body with a handrail 10b, and the handrail 10 is connected to the upper handrail 10a at one end on the outgoing hot water pipe. 3a is connected to the lower handrail 10a 'and the return side hot water pipe 3b is connected, and at the other end, the upper handrail 10a and the lower handrail 10a' can be passed through the handrail 10b.

Therefore, if the window heat radiating section He4 is added to the hot water heating system of the present invention, the handrail 10 can suppress the occurrence of a cold draft along the window in addition to the action of the original fall prevention handrail, and the condensation on the window glass surface. The indoor auxiliary heating function is suppressed, and there is no cold draft on the window side, and the room is gentle and warm due to natural convection and radiation from the floor, wall, and ceiling. A comfortable thermal environment can be provided.

Moreover, in the hot water heating system of this invention, it is especially preferable that each thermal radiation part He1, He2, He3, He4 is the thermal radiation from a synthetic resin pipe | tube.
In this case, the wall heat radiating portion He2 and the ceiling heat radiating portion He3 are in the form of a heat radiating panel 20, and a flexible synthetic resin pipe on one surface of the heat radiating panel 20, typically excellent in flexibility and good fusion. In addition, pipes made of ethylene octene copolymer resin (PE-RT pipe, trade name: Solarex) that can be recycled are preferably meandered at regular intervals, and the floor heat radiating portion He1 and the window heat radiating portion He4 are made of general-purpose resin. By using a polypropylene random copolymer resin pipe (PP-R pipe) that has the best heat resistance, fusion, recyclability, and low cost (60% of PE-RT pipe), It is advantageous in terms of fusion, construction, recycling, and cost.

In addition, the thermal conductivity (0.2 kcal / mh ° C.) of the synthetic resin tube is extremely lower than that of iron (thermal conductivity: 42 kcal / mh ° C.) or copper (thermal conductivity: 332 kcal / mh ° C.) and close to a heat insulating material. However, the action as a heat dissipation part is that there is a thin layer of air that is stationary on the solid surface and a thin layer of air mixed with turbulent flow and laminar flow outside, and this thin boundary layer passes heat The amount of heat radiation effective for heating is governed by convective heat transfer resistance (film heat resistance).
For radiator tubes:
The heat transfer coefficient K = 1 / (1 / h ₁ d ₁ + 1 / 2λlnd ₂ / d ₁ + 1 / h ₂ d ₂ ).
Where h ₁ : thermal conductivity of the inner surface of the tube, λ: thermal conductivity of the tube material, d ₁ : inner diameter of the tube, d ₂ : outer diameter of the tube, h ₂ : thermal conductivity of the outer surface of the tube.

When comparing a copper tube with a nominal diameter of 10 mm (inner diameter: 10 mm, outer diameter: 13 mm) and a resin tube in the above general formula;
If h1: 500 kcal / m ² h ° C. (water film coefficient) and h2: 8 kcal / m ² h ° C. (air film coefficient), the heat transfer coefficient K of the copper tube is 0.102 kcal / m ² h. At ℃, the resin tube becomes 0.0956 kcal / m ² h ℃, and even if there is a large difference in the thermal conductivity of the material itself, the heat conduction as a heat radiating tube of the copper tube and the resin tube due to the influence of the air boundary film coefficient Is an approximation.

Theoretically, the heat dissipation per meter of a synthetic resin tube with a nominal diameter of 10 mm is 18.9 kcal / H for convection heat dissipation and 7.68 kcal / H for radiation heat dissipation, which is a total of 25.69 kcal / mH. The actual measurement result was 20-22 kcal / mh ° C., which was smaller than the theoretical calculation value.
A comparison of the heat sink made of synthetic resin and metal in terms of volume, weight, and volume of retained water is as follows.
Synthetic resin Metal
Heat dissipation per volume (kcal / m ³ · H) 42000 25000-34000
Heat dissipation per weight (kcal / kg · H) 400 60-70
Volume retained water volume (kg / m ³ ) 196 98

As described above, the heating system that dissipates heat from the synthetic resin tube of the present invention has a low thermal conductivity, so there is no fear of burns even when contacted, and the heat dissipation amount is larger than that made of metal, and more than that made of metal. It is thin or has a small heat dissipation area and is lightweight.
Therefore, the heat radiating part has no fear of corrosion due to oxygen unlike a metal hot water panel, and it is not necessary to provide oxygen mixing prevention means to the hot water boiler, and the used synthetic resin tube is easy to cut and heat-seal. Therefore, the construction of the heat radiation part is easy, the material cost is low, and the construction cost can be rationalized.
And since the surface temperature of each heat radiating part can also be set high, a high radiation effect is acquired and it becomes comfortable heating which is rich in a warm feeling with natural convection heat.

  Further, in the hot water heating system of the present invention, the floor heat radiating portion He1 is formed in a rectangular pit P provided on the floor slab S along the window Wi as shown in FIG. It is preferable that the guide plate 8a is suspended near the pit bottom Pb on the rear side of the radiator 5 along the entire length of the floor radiator 5, and the grating lid 4a is disposed on the upper surface of the pit P.

In this case, the length of the heat radiation upper surface of the floor radiator 5 is preferably approximate to the width Lw of the window Wi.
Accordingly, in the present invention, as shown in FIG. 2C, the cold ac that descends along the window Wi, that is, the cold draft ac, passes through the grating lid 4a to the window side (rear side) of the pit P. Since it enters and flows into the lower part of the floor radiator 5 along the bottom surface Pb of the pit P by the guide plate 8a and passes through the grating lid 4a from the upper surface of the floor radiator 5 and rises as warm air ah, a cold draft (cold air) The scattering of ac into the room can be suppressed, and a comfortable thermal environment in the room can be provided.

Further, as shown in FIG. 3, the floor radiator 5 has two upper and lower synthetic resin headers 5a and 5a ′ for warm water inflow and outflow at the base end and two upper and lower stages for securing a flow path at the other end. It is preferable to provide the synthetic resin headers 5b and 5b ', and connect the upper headers 5a and 5b and the lower headers 5a' and 5b 'with a plurality of synthetic resin radiating pipes 5e.
In this case, the hot water circulation to each heat radiating pipe 5e may be performed by a desired route control means in each header.
Accordingly, a large number of heat radiating pipes 5e can be arranged in a space with a limited height and width, and by appropriately controlling the hot water path from the hot water inflow header 5a to the hot water outflow header 5a 'by the heat radiating pipe 5e, It is possible to provide a synthetic resin floor radiator 5 that can appropriately cope with a cold draft (cold airflow) ac generated in Wi and that is small, long, and inexpensive.

As the path control in the floor radiator 5 of the present invention, as shown in FIG. 3A, the upper and lower headers 5a and 5a ′ for inflow and outflow of hot water are both separated by a partition plate 5h. The two-stage headers 5a and 5a ′ are provided with an inflow connection portion 5d and an outflow connection portion 5d ′ on one side of the partition plate 5h, and the upper and lower headers 5a and 5a ′ on the other side of the partition plate 5h. Is preferably communicated with the passage pipe 5g '.
The connecting portions 5d and 5d 'are synthetic resin pipe pieces, and a small piece of a polypropylene random copolymer resin pipe (PP-R pipe) made of the same material as the headers 5a and 5a' is connected to the headers 5a and 5a '. What is necessary is just to carry out fusion joining.

In this case, the headers 5a, 5a ′, 5b, 5b ′ and the heat radiating pipe 5e are made of PP-R pipes that are excellent in heat resistance and heat fusion and are inexpensive, and the floor radiator 5 is manufactured by heat fusion processing. Is preferred.
As shown in FIG. 3A, the floor radiator 5 includes a heat radiating pipe 5e between the upper headers 5a and 5b by a partition plate 5h of the inflow upper header 5a and an upper header 5b for securing the flow path at the other end. The group is divided into a flow f2 of header 5a → header 5b and a flow f4 of header 5b → header 5a. The heat radiation pipe 5e group between the lower headers 5a ′ and 5b ′ is also flow of header 5a ′ → header 5b ′. f6 and the flow 5 of the header 5b ′ → header 5a ′ are divided into two, and the inflowing hot water f1 from the connecting portion 5d is supplied to the inflow / outflow side headers 5a, 5a ′ and the other end flow path securing headers 5b, 5b ′. The flow can be controlled to reciprocate twice between them, and an effective heat radiation action can be expected from all of the plurality of heat radiation pipes 5e in the upper and lower stages.

Further, in the hot water heating system of the present invention, the wall heat radiating portion He2 and the ceiling heat radiating portion He3 have a plurality of grooves 22G arranged in parallel on one surface of the synthetic resin heat insulating material 22, and a groove 20G that is coded as the groove 22G. It is preferable to arrange the hot water pipe 3 in the groove 20G of the heat radiating panel 20 in which the aluminum plate 21 provided with the heat insulating material 22 is layered.
In this case, the heat insulating material 22 is preferably a foamed synthetic resin plate that is lightweight and has shape retention, and is typically an extruded polystyrene foam (JISA9501), and the hot water pipe 3 is flexible. Recyclable ethylene octene copolymer resin tube (PE-RT tube).

Accordingly, the heat radiation panel 20 is light in weight, and can be easily manufactured, transported, arranged, and handled. The aluminum plate 21 is also used for the lightweight wall (LGS wall) base Wa (FIG. 6) and the LGS ceiling base c (FIG. 7). A plurality of arrangements according to the indoor space of the heat radiating panel 20 are facilitated, and the wall heat radiating portion He2 and the ceiling heat radiating portion He3 can be rationally provided at low cost.
Moreover, the heat insulating material 22 having a small thermal conductivity (0.03 kcal / mh ° C.) prevents the heat diffusion of the hot water pipe 3, and the aluminum plates 21 having a high thermal conductivity (180 kcal / mh ° C.) are arranged at regular intervals. Heat in the hot water pipe 3 is averaged and transferred to the plate-like finishing materials 23 and 36 on the surface, and natural and mild heating in the room can be provided in a form that does not protrude into the room.

Further, in the wall heat radiating portion He <b> 2, it is preferable that the heat radiating panel 20 is mounted in the partition wall Wa via the protruding edges 21 </ b> E on both sides of the aluminum plate 21 and the finishing material 23 is disposed on the aluminum plate 21.
Therefore, the heat radiating panel 20 can be easily attached by screw fixing to a structural material such as a partition stud via the aluminum panel protruding edge 21E.
Moreover, since the heat radiation is a surface heat radiation from the hot water pipe 3 through the aluminum plate 21, it is more effective than the single heat radiation from the hot water pipe 3.
In this case, the heat radiating panel 20 has a heat insulating material 22 width (L20 ′) of 405 mm, the aluminum plate 21 is provided with protruding edges 21E of 20 mm (d2) on both sides, and is erected at intervals of 455 mm of the partition wall Wa. The aluminum protruding edge 21E may be screwed to the stud 25 by fitting between the studs 25.

And since the finishing material 23 conceals the radiating panel 20 in the embedded form, the finishing material 23 makes the radiating heat from the aluminum plate 21 surface of the radiating panel 20 a mild overall heat radiation heating to the room without impairing the beauty. Provide a natural and mild thermal environment.
Further, in this case, as shown in FIG. 6, if the lower louver 27 and the upper louver 27 ′ for heat radiation that can be adjusted over a wide range from horizontal to vertical are arranged on the upper and lower sides of the heat radiating panel 20 as shown in FIG. Along with radiation heat radiation from the material 23, the air flowing in from the lower louver 27 is warmed, and is preferably discharged from the upper louver 27 'as a natural warm air flow whose direction can be adjusted.

Further, in the present invention, as shown in FIG. 4, the window heat radiating portion He4 has an upper handrail tube 10a and a lower handrail tube 10a 'in which a stainless steel tube 10d is inserted in a synthetic resin pipe 10a arranged in parallel, and upper and lower handrail tubes. 10a and 10a 'are connected by a plurality of parallel handrails 10b. The upper and lower handrail pipes 10a and 10a' are connected to one handrail pipe 10a on one end side and the hot water inflow pipe 3a on the other handrail pipe 10a '. While connecting the hot water outflow pipe 3b, it is preferable that the upper and lower handrail pipes 10a and 10a 'can be connected to the hot water by the handrail 10b on the other end side.
In this case, if the handrail 10b is also made of a synthetic resin tube similar to the handrail tubes 10a and 10a ', the handrail can be easily formed by heat-sealing, and it can be warmed even when touched by hand, and the handrail 10 having a design effect can be obtained. .

In this case, if the hot water communication by the handrail 10b on the other end side of the upper handrail tube 10a and the lower handrail tube 10a 'is ensured, the handrail 10b at an appropriate position between the upper and lower handrail tubes 10a and 10a'. The hot water communication may be possible, and if the flow resistance of the intermediate handrail 10b is made larger than the flow resistance of the end handrail 10b, the hot water communication of the upper and lower handrail pipes 10a and 10a 'on the other end side can be ensured.
Accordingly, the upper and lower handrail pipes 10a and 10a 'are reinforced by the stainless steel pipe 10d that is not corroded by oxygen in running water to exhibit a sufficient handrail function, and the synthetic resin handrail pipes 10a and 10a' around the stainless steel pipe 10d are provided. Exhibits the function of a heat radiating tube that does not cause burns even if it comes into contact with the action of the floor heat radiating section He1 disposed along the window, and normally suppresses cold draft ac generated and lowered in the window Wi, It also compensates for heat loss from the window Wi.

In the concealed hot water heating system of the present invention, the floor heat dissipating part He1, the wall heat dissipating part He2, and the ceiling heat dissipating part He3 that are heated by hot water are all concealed, so that the space in the room may be damaged or the appearance may be impaired. Even if it is circulating heating with high-temperature water of about 80 ° C., which is effective as warm water heating, there is no fear of burns for users and occupants.
In addition, the room is heated gently by radiation, conduction, and convection from the floor, from the wall, and from the ceiling, providing a comfortable thermal environment.

And since the floor thermal radiation part He1 exists along the window Wi, the unpleasant influence to the room user of the cold (cold draft) ac which falls along a window can also be suppressed.
That is, the room suppresses the influence of cold draft ac on the window side, becomes natural heat radiation heating from the four rounds of the floor, wall and ceiling, uniform with natural convection heat and radiant heat without forced ventilation of fans etc., and It becomes warm and comfortable heating.

In addition, by radiating the floor heat radiating portion He1, the wall heat radiating portion He2, the ceiling heat radiating portion He3, and all the heat radiating portions of the window heat radiating portion He4 as required by circulation of hot water to the synthetic resin pipe, Since there is no fear of corrosion due to oxygen unlike the conventional metal heat radiating part (metal panel), it is not necessary to provide oxygen mixing prevention means for the hot water boiler, and the oxygen transmission preventing means is also provided for the hot water pipe 3. Equipment costs can be streamlined because there is no need to apply them.
Moreover, the heat radiating section made of all synthetic resin is lightweight and inexpensive, and the construction cost can be reduced.
Moreover, the surface temperature of each heat dissipating part can be set high, a high heat radiation effect can be obtained, and a comfortable thermal environment rich in warm feeling can be provided along with natural convection.

[Floor heat dissipation part He1 (FIGS. 2 and 3)]
2A is a top view of the floor heat dissipating unit He1 disposed along the sliding door (window) Wi serving as an entrance to the balcony, and FIG. 2B is a cross-sectional view taken along line BB in FIG. FIG. 2 (C) is a cross-sectional view taken along line CC in FIG. 2 (A).
That is, the floor heat radiating portion He1 is arranged on the outer heat insulating outer wall in which the extruded polystyrene foam FP and the extruded cement plate Ac are stretched on the outer surface of the concrete wall Wb, and the width (Lw) serving as the entrance to the balcony is 1700 mm. Along the sliding door (window) Wi, a pit P having a length LP of 1900 mm, a width WP of 250 mm, and a height HP of 150 mm is formed in the floor slab concrete S as a recess having a shape 100 mm longer than the window Wi. The floor radiator 5 is disposed in the pit P, and the upper surface of the pit P is covered with the grating lid 4a.

Further, on one side surface PR of the pit P, as shown in FIG. 2 (B), a nominal diameter of 13 mm (outer diameter: 17 mm, inner diameter: 13 mm) disposed in the floor slab S and protected by the sheath tube 13 in an embedded form. Two of the hot water pipes 3, that is, the outgoing hot water pipe 3a and the return hot water pipe 3b are projected.
The hot water pipe 3 employs an ethylene octene copolymer resin pipe (trade name: Solarex), which is highly flexible and flexible and can be recycled.

As shown in FIG. 2 (B), the two hot water pipes 3a and 3b protruding from the pit side surface PR sense the surrounding temperature at the tip of the hot water pipe 3a for inflow, adjust the inflow of hot water, An automatic temperature control valve (thermostat valve) 6a for keeping the temperature constant is arranged, and a water stop valve 6b for stopping the return of the hot water at the time of maintenance is arranged at the tip of the hot water pipe 3b for outflow.
The warm water inflow header 5a and the inflow hot water pipe 3a of the floor radiator 5 arranged in the pit P are communicated with each other by a pressure-resistant rubber hose 7a, and the warm water outflow header 5a 'and the outflow hot water pipe are connected. It connects with 3b with the pressure | voltage resistant rubber hose 7b.

3A and 3B are explanatory views of the radiator, in which FIG. 3A is an overall perspective view, FIG. 3B is a partial perspective view of a header, and FIG. 3C is a cross-sectional view taken along the line CC in FIG. FIG.
As shown in FIG. 3 (A), the floor radiator 5 includes two upper and lower headers 5a, 5a ', 5b, 5b' arranged on both sides and two upper and lower radiating pipes 5e arranged in parallel and communicating with each header. The upper and lower headers 5a and 5a 'at one end are for inflow and outflow of hot water, and the upper and lower headers 5b and 5b' at the other end are for securing a flow path, and the upper and lower headers 5a and 5a ' And 5b, 5b ′ are fixed to each other by a separator pipe 5g, the flow-in header 5a and the flow-out header 5a ′ are divided into flow paths by an intermediate partition plate 5h, and on one side of the partition plate 5h, An inflow connection portion 5d made of a pipe piece is fixed to the header (inflow header) 5a, and an outflow connection portion 5d 'made of a pipe piece is fixed to the lower header (outflow header) 5a' so that water can flow. On the other side of the plate 5h, the passage pipe 5g ' Lower headers 5a, connecting 5a' cross water flow capable.

The floor radiator 5 is made of polypropylene random copolymer resin (PP-R) and has a length L5 of 1700 mm and a height H5 of 65 mm.
The headers 5a, 5a ′, 5b, 5b ′ have an outer diameter of 27 mm, an inner diameter of 23 mm, and a length W5 of 125 mm. From the side of the header, the distance L is 20 mm in one direction, the length Lc is 25 mm, and from the tip. A connection pipe 5c having a step d5 (1.5mm) on the inner peripheral surface is projected at Lc '(20mm), and both ends are closed by a small mouth block 5i. A header 5a for warm water inflow and a header for warm water outflow 5a 'has arrange | positioned the partition plate 5h in the length direction center.
The layout of the partition plate 5h is typically such that the headers 5a and 5a 'are cut at the center, the aluminum partition plate 5h is sandwiched, and the divided header pieces on both sides are again formed on the aluminum partition plate 5h by electrofusion means. Of course, the partition plate 5h may be integrally formed when the header is molded.

Further, as shown in FIG. 3A, the upper header 5a and the lower header 5a ′ having the partition plate 5h in the center are EF (electrofusion) through a hole Hi in a direction opposite to the connection pipe 5c. The connecting portions 5d and 5d ′ that are joined to communicate with the header are provided.
In addition, the upper and lower headers 5a and 5a ′ on the inflow / outflow side of the warm water and the upper and lower headers 5b and 5b ′ for securing the flow path are integrally joined to each other by a separator pipe 5g and a passage pipe 5g ′.
In this case, only the passage pipe 5g 'on the inflow / outflow side of the upper and lower headers on the side opposite to the connecting portions 5d and 5d' via the partition plate 5h has a function of a communication channel between the upper and lower headers 5a and 5a '. The other separator pipe 5g is a simple support pipe.

Further, as shown in FIG. 3A, a PP-R radiating pipe 5e group having an outer diameter of 13 mm and an inner diameter of 10 mm is provided between the upper headers 5a and 5b and between the lower headers 5a 'and 5b'. As shown in FIGS. 3B and 3C, each of the connection pipes 5c is fitted in a form that abuts against the step d5 and is joined by EF fusion bonding.
In this case, since each heat radiating pipe 5e is long (1636 mm in the embodiment), as shown in FIG. 3A, each heat radiating pipe 5e group is inserted into a plastic separator plate 5f, thereby arranging each heat radiating pipe 5e group mutually. It is preferable to maintain the form and improve the shape retention of the floor radiator 5.

  Therefore, in the floor radiator 5 shown in FIG. 3A, the warm water flow f1 entering from the connection portion 5d flows from the front side of the partition plate 5h of the upper header 5a to the inside of the three heat radiation pipes 5e on the upper front side. Flows to the right as f2, moves laterally as the hot water flow f3 in the upper header 5b at the other end, flows to the left as the warm water flow f4 in the three upper radiating pipes 5e, and the partition plate 5h of the upper header 5a From the rear side to the rear side of the partition plate 5h of the lower header 5a ', it passes through the passage pipe 5g' and descends as a hot water flow f5, and from the rear side of the partition plate 5h of the lower header 5a 'to the lower rear side three radiating pipes 5e flows to the right as a warm water flow f6, moves laterally as a warm water flow f7 in the lower header 5b 'at the other end, flows to the left as a warm water flow f8 in the three lower radiating pipes 5e, and flows to the left as the lower header It flows to the front side of the partition plate 5h of 5a ', It becomes possible to flow out as the warm water flow f9 from the connecting portion 5d ′.

As shown in FIGS. 2 (B) and 2 (C), the floor radiator 5 is installed on the pit bottom plate Pb and then fixed to the front side of the pit at an appropriate interval by a construction anchor 9f and a nut 9f '. The lower heat radiating pipe 5e group is placed on the mount 9a, and the connecting portion (joint) 5d of the upper header 5a is connected to the outgoing hot water pipe 3a via the automatic temperature control valve 6 and the pressure resistant rubber hose 7a. The connecting portion (joint) 5d ′ of the lower header 5a ′ is connected to the return-side hot water pipe 3b through the water stop valve 6b and the pressure-resistant rubber hose 7b.
In addition, 7c is a hose band.

Next, with respect to the installed floor radiator 5, as shown in FIGS. 2B and 2C, the induction plate 8a having the hook 8b on the upper inner surface and the hook 8b are engaged with the heat radiating pipe 5e, and the induction plate The lower end of 8a is arranged to hang down to the vicinity of the pit bottom Pb.
The length L8 of the guide plate 8a preferably extends over the entire length of the heat radiating pipe 5e.
Then, the grating lid 4a is fitted on the grating frame 4b fixed via the anchor 4c on the upper surface of the pit P.

[Wall heat dissipating part (Figs. 5 and 6)]
5A is a partially cutaway perspective view of the heat dissipation panel, FIG. 5B is a cross-sectional view taken along the line BB of FIG. 5A, and FIG. It is the elements on larger scale of B).
6 (A) is a partially cutaway front view of the wall heat radiating portion He2, FIG. 6 (B) is a cross-sectional view taken along the line BB of FIG. 6 (A), and FIG. It is CC sectional view taken on the line of FIG.
As shown in FIG. 6 (A), the wall heat dissipating part He2 has a heat dissipating panel 20 embedded in a lightweight steel wall base (LGS wall base) Wa, a hot water pipe 3 is disposed in the heat dissipating panel 20, and The interior is gently heated with radiant heat and natural convection heat through a finishing material 23 stretched on the wall.

As shown in FIG. 5, the heat radiating panel 20 has a height H20 of 1820 mm, a width L20 of 450 mm, a thickness of 40.2 mm (t20), and a 0.2 mm thick aluminum plate 21 and a 40 mm thick plate-shaped composite. A resin heat insulating material (JISA9501) 22 is integrally laminated with an adhesive. The aluminum plate 21 has a shape in which both side edges 20E protrude 22.5 mm from the heat insulating material 22, and a heat insulating material width L20 ′ is 405 mm. is there.
A width W21 for fitting a hot water pipe 3 made of PE-RT (made of ethylene-octene copolymer resin) and having a nominal diameter of 13 mm (outer diameter: 17 mm, inner diameter: 13 mm) to the aluminum plate 21 and the heat insulating material 22. 4 grooves 20G having a length of 17 mm and a depth d21 of 17 mm are formed at equal intervals in the height (length) direction.

This heat dissipating panel 20 is as light as 1.4 kg per sheet, and can be easily manufactured, transported, arranged, handled, etc., mounted, mounted on the LGS wall base Wa, the LGS ceiling base C, an aluminum plate It is possible to fix the screw via the both side projecting edges 21E of 21.
Moreover, the heat insulating material 22 having a small thermal conductivity of 0.03 kcal / mh ° C. prevents diffusion of heat in the hot water pipe 3, and four aluminum plates 21 having a high thermal conductivity (180 kcal / mh ° C.) are equally spaced. The heat of the arranged hot water pipe 3 can be averaged over the entire surface of the aluminum plate 21 and transmitted to the plate-like interior material (finishing material) 23 covering the surface.
Moreover, the heat radiation panel 20 can be prepared at low cost (at the time of filing: 3700 yen / sheet).

As shown in FIGS. 6 (A) and 6 (B), the wall heat radiating portion He3 is provided with a steel runner 24, which is a conventional LGS wall base material, on the surface of the floor slab concrete S, as shown in FIGS. It fixes using a construction anchor and the runner 24 'is screwed to the field edge 30 which is a LGS ceiling base material.
Next, between the upper and lower runners 24, 24 ′, LGS wall base material studs 25 are fitted at intervals of 455 mm, and between the standing studs 25, the heat dissipating panel 20 having a heat insulating material width L 20 ′ of 405 mm is fitted. Aluminum protruding edges 21E protruding 20 mm from both sides of the heat radiating panel 20 are fixed to the studs 25 on both sides with screws.

Then, an air supply lower louver 27 and a heat radiating upper louver 27 ′ capable of adjusting the air supply airflow and the blown airflow from horizontal to vertical are screwed to the stud 25.
Next, a hole H3 for disposing the hot water pipe 3 is formed in the stud 25, and the synthetic resin sheath tube 13 having an inner diameter of 24.5 mm disposed in the ceiling C and the LGS wall base Wa from the heat source unit 1 is provided. The hot water pipe 3 having a nominal diameter of 13 mm is inserted through the stud 25 and the hot water pipe 3 is fitted into the groove 20G of the heat radiating panel 20 to form a hot water circulation path between the heat source unit 1 and the heat radiating panel 20. .
What is necessary is just to stick an aluminum tape to the aluminum plate 21 in the case of piping into the thermal radiation panel groove | channel 20G of the hot water panel 3. FIG.

A temperature sensor 28a that senses room temperature is connected to one end, and a capillar tube 28b that is connected to a temperature control valve 28c that automatically adjusts the flow rate of hot water according to the change in room temperature is connected to the other end. The valve 28c is arranged in a concealed form on the hot water pipe 3a before reaching the heat dissipation panel 20, and the temperature sensor 28a is arranged at a position where the room temperature adjustment operation is easy.
Incidentally, a steel reinforcing plate 26 is appropriately brought into contact with the notched portion of the stud 25 where the hot water pipes 3 (3a, 3b) intersect, and are fixed by screws or by welding.

And the plate-shaped interior material (finishing material) 23 is stuck on the LGS wall base Wa, and the thermal radiation panel 20 is made into an embedding form.
In this case, if the interior material 23 is stretched in such a manner that the heat dissipation panel 20 and the interior material 23 sandwich the 0.1 mm thick poly film 29 ′, the airtightness is improved, and the width 50 mm ( The LGS wall substrate Wa at t25) becomes a sealed space and the heat dissipation effect is improved.
Further, if a 10 mm thick urethane foam 29 "having a thickness of 10 mm is sprayed on the surface of the stud 25 outside the wall heat radiating portion He2, heat dispersion from the stud 25 can be prevented, and the stud 25 has a heat radiating fin function, and the wall heat radiating portion He2 is able to prevent heat loss of about 8%, 1 m ² per heat radiation amount of 566kcal / H can be secured.

[Ceiling radiator (Fig. 7)]
FIG. 7 is an explanatory diagram of the ceiling heat radiating section He3. FIG. 7A is a plan view of the LGS ceiling foundation C viewed from above the ceiling, and FIG. 7B is a view of B in FIG. -B line sectional drawing and FIG.7 (C) are CC sectional view taken on the line of FIG. 7 (A).
The ceiling heat dissipating section He3 may be embedded with the heat dissipating panel 20 shown in FIG. 5 on the ceiling surface and the aluminum plate 21 on the lower surface, and the heat dissipating panel 20 is embedded in the ceiling finishing material 36.

In general, as shown in FIG. 7B, the LGS ceiling foundation C is assembled by fastening the suspension bolts 34a having a diameter of 9 mm to the inserts 34c previously embedded in the floor slab S at intervals of about 900 mm, The hanger 33 provided with the accommodating part of the shape to restrain is fixed to the suspension bolt 34a with the nut 34b, and the field receiver 31 is inserted and attached to the accommodating part of the hanger 33.
And the double field edge 30a and the single field edge 30b are attached to the field edge receiver 31 by the clip 32 in the alternately arranged form.

As shown in FIG. 7 (A), the ceiling heat radiating portion He3 of the present invention has a single field edge 30b of the arrangement portion of the heat radiating panel 20 to a length H20 of the heat radiating panel 20 after assembly of a general LGS ceiling foundation C. Corresponding length H20 (1820 mm) is cut into an opening, and then the field edge receiver 31 between the double field edges 30a arranged at a 455 mm interval (L20) is cut off by a length of 405 mm (L20 ') to form the opening. As shown in FIG. 7 (C), a reinforcing field edge receiver 31 ′ having a length of about 700 mm is fixed to the field edge receiver 31 with the channel fitting 35 in a form to be placed on the cutting portion of the field edge receiver 31. .
In addition, the cut end portion of the cut single field edge 30b in a cantilevered manner prevents the field edge receiver 31 having an appropriate length from interfering with the plurality of field edges 30a and 30b and the opening for the heat radiating panel 20. , Place and fix.

Next, the heat radiating panel 20 is fitted into the opening of the LGS ceiling base C with the aluminum plate 21 as the bottom surface, and the aluminum plate protruding edges 21E on both sides are connected to the double field edges 30a on both sides as shown in FIG. The center of the heat radiating panel 20 is fixed with a long screw N from the lower aluminum plate 21 to the double edge 30a 'attached to the auxiliary edge receiver 31' on the upper surface of the panel 20.
That is, the heat dissipation panel 20 is attached to the field edge at both side edges and the center.
Next, the hot water pipe 3 of the PE-RT pipe is inserted into the synthetic resin sheath piped from the heat source unit 1, the hot water pipe 3 is fitted and disposed in the groove 20G of the heat radiating panel 20, and temporarily fixed with aluminum tape. Then, if a conventional ceiling finishing material 36 is stretched from the lower surface, the ceiling heat radiation portion He3 having the heat radiation panel 20 embedded and concealed can be formed.

[Window radiator (Fig. 4)]
4A and 4B are explanatory views of the window heat radiating portion He4, where FIG. 4A is a plan view, FIG. 4B is a front view, FIG. 4C is an enlarged view of the main part of FIG. It is.
That is, the window heat dissipating unit He4 in FIG. 4 is placed on the window Wi placed on the outer insulating concrete outer wall in which the heat insulating layer of the extruded polystyrene foam FP and the extruded cement Ac are stretched outside the concrete wall Wb. The handrail 10 is used as a heat dissipating part.
The fall-preventing handrail 10 is composed of an upper handrail tube 10a, a lower handrail tube 10a 'of a PP-R pipe, and a handrail 10b connecting the upper and lower handrail tubes. The upper and lower handrail tubes 10a and 10a' have an outer diameter of 27 mm and an inner diameter of 21. The handrail 10b is a pipe having an outer diameter of 13 mm and an inner diameter of 10 mm.

Further, as shown in FIGS. 4B and 4C, the upper and lower handrail pipes 10a and 10a ′ are connected to the side surface of the connecting pipe 10c having an outer diameter of 17 mm, an inner diameter of 13 mm, and a length (d10) of 30 mm at intervals of 100 mm. Is integrated into the handrail tube 10a, 10a ′, and a hot water water-permeable stainless steel pipe 10d having an outer diameter of 21.7 mm, an inner diameter of 15.7 mm, and a wall thickness of 3 mm is inserted and fitted into it. Strength is imparted and the left end 10L of the stainless steel pipe 10d is closed.
Then, as shown in FIG. 4 (B), each handrail 10b is fitted into a connection pipe 10c of an upper and lower handrail tube and integrated by heat fusion.
In this case, the handrail 10b at the tip (left end) is formed so as to be able to flow with the stainless steel pipe 10d in the upper and lower handrail tubes.

  Also, as shown in FIGS. 4 (C) and 4 (D), the handrail tubes 10a and 10a ′ are attached by inserting the washer 11a into the receiver 11a of the washer 11, and screwing the washer 11b to the window wooden frames WF on both sides. On the inflow / outflow side of the warm water at the right end 10R, the hole 10h of the wooden frame WF is inserted, the stainless steel pipe 10d in the upper handrail tube 10a is inserted into the faucet socket in the cut portion C10 having the stainless steel lid 15 on the wall Wb. 12a is connected to the forward hot water pipe 3a protected by the sheath tube 13 via the water stop valve 14, and the stainless steel pipe 10d in the lower handrail tube 10a 'is returned to the sheath pipe 13 by the faucet elbow 12b. Connect to the side hot water pipe 3b.

Accordingly, the hot water circulated from the heat source unit 1 by the circulation pump 2 is, as indicated by an arrow in FIG. 4B, the forward hot water pipe 3a → the upper handrail tube 10a → the front handrail 10b → the lower handrail tube 10a ′ → The upper and lower handrail pipes 10a and 10a 'are heated by the internal stainless steel pipe 10d, and the upper and lower handrail pipes 10a and 10a' constitute a heat radiating portion of the synthetic resin pipe.
This window heat radiating section He4 has a stainless pipe 10d that does not corrode with oxygen, so that it functions as a fall-preventing handrail as well as a conventional safety handrail, and the temperature can be adjusted by adjusting the flow rate of the water stop valve 14. Heat loss can be compensated for, and the occurrence of an unpleasant cold draft on the windowsill can be suppressed.

It is a schematic explanatory drawing of this invention, Comprising: (A) is a whole schematic perspective view, (B) is a schematic perspective view of a window. It is explanatory drawing of the floor thermal radiation part of this invention, Comprising: (A) is a top view, (B) is BB sectional view of FIG. (A), (C) is CC sectional view of FIG. (A). FIG. It is explanatory drawing of the floor radiator of this invention, Comprising: (A) is a partially cutaway perspective view, (B) is a principal part expansion perspective view, (C) is CC sectional view taken on the line of FIG. . It is explanatory drawing of the window thermal radiation part of this invention, Comprising: (A) is a top view, (B) is a front view, (C) is a principal part enlarged view of FIG. (B), (D) is an installation state explanatory drawing. is there. It is explanatory drawing of the thermal radiation panel used for this invention, Comprising: (A) is a partially notched perspective view, (B) is a BB sectional drawing of FIG. (A), (C) is C section of FIG. (B). It is an enlarged view. It is explanatory drawing of the wall thermal radiation part of this invention, Comprising: (A) is a front view, (B) is the BB sectional view taken on the line of FIG. (A), (C) is the CC sectional view of FIG. FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the ceiling thermal radiation part of this invention, Comprising: (A) is a top view, (B) is a BB sectional drawing of a figure (A), (C) is a CC sectional view of FIG. FIG. It is explanatory drawing of the prior art example 1. FIG. It is explanatory drawing of the prior art example 2, Comprising: (A) is a front view, (B) is a vertical side view. It is explanatory drawing of the prior art example 3, Comprising: (A) is a whole perspective view, (B) is a principal part longitudinal cross-sectional view.

Explanation of symbols

1 Heat source machine (boiler)
2 Circulating pump 2 'Expansion tank 3 Hot water pipe 3a Outward hot water pipe (hot water pipe, hot water inflow pipe)
3b Return side hot water pipe (hot water pipe, hot water outflow pipe)
4a Grating lid 4b Grating frame 4c Anchor 5 Floor radiator (heat radiator)
5a, 5a ', 5b, 5b' Header 5c Connection pipe 5d, 5d 'Connection (joint)
5e Heat-dissipating pipe 5f Separator plate 5g Separator pipe 5g 'Passage pipe 5h Partition plate 5i Small mouth 6a Automatic temperature control valve 6b Water stop valve 7a, 7b Pressure rubber hose 7c Hose band 8a Guide plate 8b Hook 9a Mounting base 9f Post-work anchor 9f' Nut 10 Fall prevention handrail (handrail)
10a, 10a 'handrail pipe 10b handrail 10c connection pipe 10d stainless steel pipe (stainless steel pipe)
10h hole 11 receiving washer 11a receiving 11b washer 12a faucet socket 12b faucet elbow 13 sheath tube 14 water stop valve 15 stainless steel lid 20 heat radiating panel 20G, 22G groove 21 aluminum plate 21 'aluminum tape 21E protruding edge 22 heat insulating material 23, 36 Interior materials (finishing materials)
24, 24 'Runner 25 Stud 26 Reinforcement plate 27, 27' Galile 28a Temperature sensor 28b Capillal tube 28c Temperature control valve 29 Hard rubber 29 'Poly film 29 "In-situ foamed urethane 30a, 30a' Double field edge (field edge)
30b Single field edge (field edge)
31 Field Edge 31 'Auxiliary Field Edge 32 Clip 33 Field Edge Receiver (Hanger)
34a Suspension bolt 34b Nut 34c Insert 35 Channel bracket He1 Floor heat radiation part He2 Wall heat radiation part He3 Ceiling heat radiation part He4 Window heat radiation part ac Cold air (cold draft)
ah Warm air Ac Extruded cement C LGS Ceiling base (ceiling)
FP Extruded polystyrene foam N Long screw P Pit PL, PR, PS, PS 'Pit side Pb Pit bottom S Floor slab (floor slab concrete)
Wa wall (lightweight wall base, LGS wall base, partition wall)
Wb concrete wall (wall)
Wi Window WF Window frame (wooden frame)

Claims (9)

  The hot water heated by one heat source machine (1) is concealed by the circulation pump (2) through the synthetic resin flexible hot water pipe (3) and placed on the floor along the window. It flows into and circulates in the floor heat radiation part (He1) in the embedded form, the wall heat radiation part (He2) in the concealed embedded form on the wall, and the ceiling heat dissipating part (He3) in the concealed embedded form on the ceiling. A concealed hot water heating system that warms the room.   The hot water heating system according to claim 1, wherein the window (Wi) fall prevention handrail (10) is a window heat radiating portion (He4) through which hot water flows and circulates.   The hot water heating system according to claim 1 or 2, wherein each heat radiation portion (He1, He2, He3, He4) is heat radiation from a synthetic resin pipe.   The floor radiator (He1) is arranged in a rectangular pit (P) provided on the floor slab (S) in a form along the window (Wi), and the floor radiator (5) is arranged in the upper half on the near side, and the radiator (5 ), The induction plate (8a) is hung down to the pit bottom (Pb) near the rear side of the radiator (5) along the entire length of the radiator (5), and the grating lid (4a) is disposed on the upper surface of the pit (P). The hot water heating system according to any one of 1 to 3.   The floor radiator (5) has two upper and lower synthetic resin headers (5a, 5a ') for inflowing and outflowing hot water at the base end, and two upper and lower synthetic resin headers for securing the flow path at the other end. (5b, 5b '), and the upper headers (5a, 5b) and the lower headers (5a', 5b ') are connected by a plurality of synthetic resin radiating pipes (5e). 4 hot water heating system.   The upper and lower two-stage headers (5a, 5a ′) for inflow and outflow of warm water both block the flow path with the partition plate (5h) in the middle, and the two-stage header (5a, 5a ′) becomes the partition plate (5h). ) Is provided with an inflow connection portion (5d) and an outflow connection portion (5d ′), and on the other side of the partition plate (5h), the upper and lower headers (5a, 5a ′) are connected to the passage pipe (5g ′). The hot water heating system according to claim 5 communicated by   The wall heat dissipating part (He2) and the ceiling heat dissipating part (He3) have a plurality of grooves (22G) arranged in parallel on one surface of the synthetic resin heat insulating material (22), and a groove (20G) that is coded to the groove (22G). The hot water heating according to any one of claims 1 to 6, wherein a hot water pipe (3) is arranged in a groove (20G) of a heat dissipation panel (20) in which an aluminum plate (21) provided is layered on a heat insulating material (22). system.   In the wall heat dissipating part (He2), the heat dissipating panel (20) is mounted in the partition wall (Wa) via the protruding edges (21E) on both sides of the aluminum plate (21), and the finishing material ( 23) The hot water heating system according to claim 7, wherein 23) is arranged.   The window heat radiating portion (He4) has an upper handrail tube (10a) in which a stainless steel tube (10d) is inserted into a synthetic resin pipe (10a) and a lower handrail tube (10a ′) arranged in parallel, and upper and lower handrail tubes (10a). , 10a ′) are connected by a plurality of parallel handrails (10b), and the upper and lower handrail pipes (10a, 10a ′) are connected to one handrail pipe with a hot water inflow pipe (3a) on one end side and to the other handrail. The hot water outlet pipe (3b) is connected to the pipe, and the upper and lower handrail pipes (10a, 10a ') can be connected to the hot water at the other end side by a handrail (10b). The hot water heating system according to item 1.

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