JP3898284B2 - Floor heating system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor heating device, and more particularly to a device of a type that performs floor heating by warming an underfloor space.
[0002]
[Prior art and problems to be solved by the invention]
In the warm air heating generally used in the past, warmed air is lightened and rises, and heavy and cold air enters near the floor surface, so the temperature near the ceiling is high, that is, near the floor surface, that is, There is a problem that the temperature becomes low in a normal living level space.
[0003]
On the other hand, in the case of floor heating, this system heats by radiation and heat conduction from the floor, so the living level space near the floor is warm and the temperature difference to the ceiling is small, almost uniform. The temperature distribution can be obtained.
[0004]
Conventionally, a general construction structure for floor heating has been as shown in FIG.
In the figure, (A) is an example of the case where the joist is installed on the joist. In this example, the pipe burying layer 203 is formed on the upper side of the floor plate 202 on the joist 200, and the floor finish 210 is further laid on the upper side. .
[0005]
Here, the pipe buried layer 203 includes a pipe 204 through which a medium for floor heating is circulated, a heat expansion plate 206 and a heat insulating material 208 that hold the pipe 204.
The pipe 204 is inserted and held in a holding groove 212 formed in a metal heat transfer plate 214 as in the case of the heat expansion plate 206, and the heat expansion plate 206 is fixed to the heat expansion plate 206. The plate 206 is attached and held.
Note that reference numeral 216 is a large draw.
[0006]
On the other hand, FIG. 2 (B) is an example in the case of a joist installation type, and in this example, a holding groove 212 is formed in the heat spreader plate 206 and the pipe 204 is inserted and held therein, and in that state, they are used as joists 200 and 200. The pipe buried layer 203 is formed by being inserted together with the heat insulating material 208, and the floor board 202 and the floor finishing material 210 are laid thereon.
[0007]
However, in the case of these floor heating devices, there is a problem that on-site construction including connection between the pipes 204 is difficult, and skill is required for the work.
Therefore, prepare a panel with holding grooves for holding and holding the pipes in a predetermined arrangement in advance, carry the panel (pipe module) into the construction site, install it, and insert the pipe into the holding groove. It has been proposed to construct a floor heating device by laying and constructing a floor finishing material from the upper side.
[0008]
However, since this floor heating device is also a method of directly warming the floor, it is not different from the above method in that piping must be laid over the entire floor surface to be warmed, and over the entire room. When heating the floor surface, there is a problem that the construction is large and costly.
[0009]
On the other hand, a floor heating device has been proposed in which the floor is indirectly heated by heating the underfloor space. FIG. 3 shows an example (Japanese Patent Laid-Open No. 1-98828).
In this apparatus, a hot water pipe 220 is disposed inside the underfloor space 218, and hot water from the boiler 222 is supplied to the hot water pipe 220 to warm the underfloor space 218 and perform floor heating.
However, in the case of this device, there is a problem that the efficiency of floor heating through the underfloor space 218 is low, and a separate indoor ventilation device must be provided.
[0010]
[Means for Solving the Problems]
The floor heating apparatus of the present application has been devised to solve such problems.
Thus, the floor heating apparatus according to claim 1 is provided with a hot air duct through which hot air is circulated under the floor, and a blowing member having an air outlet on the floor is arranged so that the air outlet on the floor is exposed to the room. Provided in a state communicating with the duct, and further provided with an underfloor outlet in the hot air duct, and a part of the warm air sent through the hot air duct is blown out from the underfloor outlet into the underfloor space and the other part And the hot air duct extends from the air heating device and returns to the heating device, and the heating device is passed through the hot air duct. The warm air is circulated and circulated so as to pass through, and the underfloor outlet is provided on the outlet pipe side upstream of the blowing member in the hot air duct, and the air in the underfloor space is provided on the downstream return pipe side. provided with a suction port And wherein the door.
[0011]
[Operation and effect of the invention]
As described above, the floor heating device of the present invention has a hot air duct that distributes hot air under the floor, distributes the hot air through the hot air duct, and a part of the hot air The underfloor is blown out from the underfloor outlet provided in the duct to warm the underfloor space, and the remaining part of the warm air is blown out from the overfloor outlet that is exposed in the room above the floor to the room above the floor. In the case of this floor heating device, the floor heating can be performed simply by arranging the hot air duct under the floor.
[0012]
Moreover, since a part of warm air which distribute | circulates the inside of the warm air duct is blown out indoors, indoor ventilation can also be performed.
Here, the amount of warm air blown from the above-mentioned floor outlet can be set to a necessary and sufficient amount for blowing indoor air .
[0013]
Since the apparatus of the present invention can warm the room by heating from the floor , the heater for room heating mainly including the blowing member having the above-mentioned floor outlet can be configured as compact as possible, or Such a heater can be omitted .
[0014]
The apparatus of the present invention, the hot air duct and pipe back again to the heating device causes Desa extend from the heating apparatus of the air, and no to circulate and distribute the hot air through the hot air duct, In this way, it is not necessary to blow out all the hot air flowing through the hot air duct into the underfloor space, and by changing the size of the opening of the underfloor outlet, the number of underfloor outlets, etc., the underfloor space It is possible to adjust the amount of hot air blown out.
[0015]
Further apparatus of the present invention, while providing the floor outlet on the upstream side delivery pipe side of the outlet member in the warm air duct, since it is provided with the inlet of the underfloor air on the side of the downstream side of the return pipe, Air in the underfloor space can be circulated through the hot air duct .
[0016]
【Example】
Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a floor, and reference numeral 12 denotes an underfloor space whose side surfaces and lower surface are covered with a heat insulating material 14, and a hot air duct 16 is disposed inside the underfloor space 12.
Reference numeral 18 denotes a blowing member having a floor outlet 20, which is provided on the floor 10 so as to be exposed to the inside of the room 22, and a small air panel heater 24 is configured with the blowing member 18 as a main element.
[0017]
The hot air duct 16 includes a delivery pipe 16A that is an upstream portion of the blowout member 18 and a return pipe 16B that is a downstream portion, and a plurality of underfloor outlets 26 are provided in the delivery pipe 16A. A suction port 28 is provided in the return pipe 16B.
[0018]
Here, the underfloor outlet 26 is a portion that blows out warm air flowing through the hot air duct 16 into the underfloor space 12, and the suction port 28 is a portion that sucks air inside the underfloor space 12 into the hot air duct 16. is there.
That is, the delivery pipe 16A is in a state where a positive pressure is applied based on the resistance of the hot air blowing from the blowing member 18, and the hot air in the hot air duct 16 is blown into the underfloor space 12 based on the pressure. .
On the other hand, the return pipe 16B has a slightly negative pressure, and air in the underfloor space 12 is sucked into the hot air duct 16 from the suction port 28 based on the negative pressure.
[0019]
Reference numeral 30 denotes an air heating device having a boiler unit 32 and a heating unit 34. The hot air duct 16 extends from the heating unit 34 and returns to the heating unit 34 after making a round in the underfloor space 12.
Reference numeral 36 denotes a blower fan.
[0020]
Reference numeral 38 denotes a ventilation opening that opens into the room 22, and reference numeral 40 denotes an exhaust duct that follows the ventilation opening 38. The exhaust duct 40 reaches an exhaust port 42 that opens outdoors.
44 is an air intake opening that opens to the outside, and the air sucked from here is supplied to the heating device 30 through the air supply pipe 46.
[0021]
A heat exchanger 48 is provided between the exhaust duct 40 and the air supply pipe 46 so as to straddle them, and heat exchange is performed between the supply air and the exhaust.
In other words, the air sucked from the air intake 44 is warmed by the heat of the exhaust exhausted to the outside, and the warmed air is supplied to the heating unit 34 of the heating device 30.
[0022]
Next, the operation of the apparatus of this example will be described.
In the apparatus of this example, the air sucked from the air intake 44 is heated by the heat exchanger 48 and then supplied to the heating unit 34 of the heating device 30 through the air supply pipe 46.
[0023]
Then, the heated hot air is further sent out from the heating device 30 through the hot air duct 16 disposed in the underfloor space 12. A part of the warm air sent out is blown into the underfloor space 12 from the underfloor outlet 26 provided in the delivery pipe 16A.
[0024]
The warm air sent out through the warm air duct 16 is further blown out into the room 22 from the floor outlet 20 of the blowing member 18 whose remaining part is exposed to the room 22, and the remaining part is heated through the return pipe 16B. Return to 30.
At that time, a part of the air in the underfloor space 12 is sucked into the return pipe 16B through the suction port 28 of the return pipe 16B having a slightly negative pressure and sent to the heating device 30.
[0025]
In this example, the amount of warm air blown from the floor outlet 20 of the blowing member 18 is the amount necessary and sufficient to ventilate the room 22, and the amount corresponding to the amount of air blown in the room 22 Air is led into the exhaust duct 40 from the ventilation port 38 and is discharged to the outside from the exhaust port 42.
[0026]
At that time, the exhaust gas flows through the heat exchanger 48, and in the process of passing through the heat exchanger 48, the heat of the exhaust gas is transferred to the air sucked through the air intake 44.
Note that the air panel heater 24 having the blowing member 18 as a main element warms the room 22 exclusively by radiant heat.
[0027]
In the case of the apparatus of this example, floor heating can be performed by warming the underfloor space 12, and the room 22 can also be warmed by radiant heat from the air panel heater 24 exposed to the room 22.
[0028]
Thus, the apparatus of this example can perform heating through the floor 10 and heating through the air panel heater 24, and can effectively heat the room 22 and By adjusting the amount of warm air blown from the outlet 26, the contribution ratio of heating by the air panel heater 24 and underfloor heating can be adjusted.
[0029]
For example, the air panel heater 24 itself can be downsized or omitted by making the amount of hot air blown from the underfloor outlet 26 sufficient.
In this case, the blowing member 18 blows warm air from the floor outlet 20 solely for the purpose of ventilation of the room 22.
[0030]
In the case of the apparatus of this example, the indoor 22 can be ventilated simultaneously with the heating of the indoor 22. At that time, all the warm air sent through the warm air duct 16 is not blown out into the room 22, and only a part thereof, that is, only a sufficient amount necessary and sufficient for ventilation, is blown into the room 22. There is no feeling of strong air current, and there is no inconvenience caused by the air current.
Furthermore, in the case of the apparatus of this example, since the heat of the exhaust is effectively recovered and used as the heat for heating, there is a feature of high thermal efficiency.
[0031]
Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, in the above example, a part of the air in the underfloor space 12 is sucked into the warm air duct 16 from the suction port 28, but the suction port 28 is omitted, and the entire air in the underfloor space 12 is separately provided It is possible to exhaust the air through the provided underfloor air vent, and the number of the underfloor outlets 26 can be appropriately increased or decreased. Only one can be provided in the hot air duct 16.
[0032]
In addition, in the present invention, the hot air duct 16 in the underfloor space 12 is circulated along the entire surface of the floor 10, and a large number of underfloor outlets 26 are arranged in the hot air duct 16 in a distributed manner at appropriate intervals. It is also possible to warm the entire floor 10 by blowing hot air.
Further, the heat exchanger 48 can be omitted, and the blowout member can be composed of a member integrated with the hot air duct or the hot air duct itself. For example, the present invention does not depart from the gist of the present invention. It can be configured in various modified forms.
[Brief description of the drawings]
FIG. 1 is a diagram of a floor heating apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram showing an example of a conventional floor heating device.
FIG. 3 is a diagram showing an example of a conventional case where floor heating is performed by heating an underfloor space.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Floor 12 Underfloor space 16 Hot air duct 16A Outlet pipe 16B Return pipe 18 Blowing member 20 Overfloor outlet 22 Indoor 24 Air panel heater 26 Underfloor outlet 28 Inlet 30 Heating device 38 Ventilation opening 40 Exhaust duct 42 Exhaust outlet 46 Air supply Tube 48 heat exchanger

Claims (1)

A hot air duct for circulating hot air is disposed under the floor, and a blow-out member having an air outlet on the floor is provided in communication with the hot air duct so that the air outlet on the floor is exposed to the room. The duct is provided with an underfloor air outlet so that a part of the hot air sent through the hot air duct is blown out from the underfloor air outlet into the underfloor space and the other part is blown into the room from the upper air outlet. None,
The hot air duct extends from the air heating device and is piped back to the heating device, and the hot air is circulated and circulated through the hot air duct and through the heating device.
The floor heating device further includes the underfloor outlet provided on the outlet pipe side upstream of the blowing member in the hot air duct, and an air suction port for the underfloor space provided on the downstream return pipe side. .

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