JP2002162046A - Floor-heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor-heating apparatus, in which a large heating capacity is obtained, a start-up of heating is quick, and economical heating is effected. SOLUTION: A number of ventilation holes 103 are made in a floor panel 101 provided to the bottom of a heating-space 100. Piping 102 is provided in the rear of the floor panel so as to heat the panel by letting a heating medium run therethrough. A blower 105 is provided to send air of the heating space to the space 107 formed in the rear of the floor panel and let it out from the ventilation holes. The air sent from the blower comes into direct contact with the external surface of the piping. The room heating is effected by radiant heat of the floor panel and air 112 let out through the ventilation holes after exchanging heat by direct contact with the surface of the piping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating apparatus for heating and heating a floor by circulating a heated heat medium such as hot water through pipes, and more particularly to an indoor terminal such as a floor panel.

[0002]

2. Description of the Related Art Floor panels in a conventional floor heating device are as follows.
Basically, a structure as shown in FIGS. 4A and 4B is adopted.

The apparatus shown in FIG. 4A is a system in which a heating medium such as hot water flows through a pipe. A pipe 404 is housed in a pipe groove 403 provided in a substrate 401, and a decorative plate 402 is placed thereon.
And is installed on the skeleton floor 405. The substrate 401 fixes and supports the decorative plate 402 and the pipe 404, and uses a material having excellent heat insulating properties for the whole or part thereof in order to prevent heat from leaking to the skeleton floor 405.

[0004] Hot water flows through the inside of the pipe 404 to perform heating, and as a method of controlling the capacity, there is a method of adjusting the temperature and circulation amount of the hot water, and the method of adjusting the temperature of the hot water is generally used.

The device shown in FIG. 4B is a method in which warm air is blown from under the floor, and a ventilation space 41 is provided between a building floor 415 and a decorative plate 412 having pores 420 for blowing hot air.
1 is provided, and the air heated by the blower 413 is sent. That is, the indoor suction air 416 passes through the heat exchanger 414 to become the heating air 417, and the blower 413
As a result, the air is blown out to the ventilation space 411 as air 418, and is discharged into the room as air 419 blown out from the pores 420 at a very low wind speed while warming the floor of the decorative board 412.

[0006] The heating capacity is controlled by the blower 413.
And the temperature of the heating air 417 are adjusted.

[0007]

However, in the conventional floor heating apparatus shown in FIG. 4A, a large heating capacity is obtained because the pipe 404 warms the floor and indirectly warms the indoor air. In addition, there is a problem that the rise of the heating speed is slow.

Further, in the floor heating apparatus of FIG. 4B, it is easy to obtain a large heating capacity, but since the air is always blown, the input of the blower 413 is consumed, which is not very economical.

The present invention solves such a conventional problem, and provides a floor heating apparatus which can obtain a large heating capacity, has a rapid heating speed rise, and can perform heating economically. For the purpose of providing.

[0010]

According to a first aspect of the present invention, there is provided a floor panel provided at the bottom of a heating space and having a plurality of ventilation holes communicating from the back side to the front side. A pipe provided on the back surface of the floor panel for heating the floor panel and flowing a heat medium, and air blowing means for sending air to a space formed on the back side of the floor panel and flowing out from the ventilation hole, The air sent by the means is configured to directly contact the outer surface of the pipe.

By this means, the heating space is formed by the radiant heat and natural convection of the floor panel heated by the pipe, and the floor panel formed by the warm air flowing out of the ventilation hole through direct contact with the outer surface of the pipe sent from the blowing means to exchange heat. It has the effect of obtaining a large heating capacity.

According to a second aspect of the present invention, there is provided a floor panel provided at the bottom of a heating space and having a plurality of ventilation holes communicating from the back side to the front side, and provided on the back side of the floor panel for heating the floor panel, A pipe through which a heat medium flows, and air blowing means for sending air to a space formed on the back side of the floor panel and flowing out from the ventilation hole, wherein the air sent by the blowing means reaches the ventilation hole from the space. The route is configured to pass through the vicinity of the pipe in a concentrated manner.

[0013] By this means, the heating space is formed by the radiant heat and natural convection of the floor panel heated by the piping, and the floor panel by warm air flowing out of the ventilation hole by direct contact with the outer surface of the piping sent by the blowing means to exchange heat. The heat is heated by the heat radiation, and furthermore, the air by the air blowing means is intensively obtained from the high-temperature pipe in the path from the space to the ventilation hole,
It has the effect of obtaining even greater heating capacity.

According to a third aspect of the present invention, the air is heated by arranging a heat exchanging means before or after the blowing means, and the floor is made of radiant heat of the floor panel by piping and warm air flowing out of the ventilation holes. In addition to the heat dissipating function of the panel, the heat exchanging means warms the air, and has an effect that the same heating capacity can be obtained with a small heat exchanging means as compared with a conventional configuration in which warm air is blown out from a floor panel.

According to a fourth aspect of the present invention, the heated heat medium passes through the pipe after passing through the heat exchange means, and the heated heat medium passed through the pipe is heated by the heat exchange means. In this case, even when heat is exchanged to lower the temperature and then flows into the pipe to obtain a large heating capacity, the temperature of the floor panel is prevented from being too high.

According to a fifth aspect of the present invention, a suction port of a blowing means for sucking air in the heating space is provided so as to surround an outer peripheral portion of the floor panel. Is prevented from being sucked from the suction port of the blowing means and flowing inward from the outer periphery on the floor panel, and has an effect of making the surface temperature of the floor panel uniform.

According to a sixth aspect of the present invention, in the control of the heating capacity, when the heating load is small, the temperature of the heat medium flowing through the pipe is adjusted while the blowing means is stopped, and when the heating load is large. The configuration is such that the amount of air blown by the blower is adjusted according to the heating load, and has a function of obtaining a large heating capacity and minimizing the input of the blower to obtain economic floor heating.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a floor heating device according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1A is a side sectional view showing a floor heating apparatus according to Embodiment 1 of the present invention.
(B) is a perspective view which shows the joist in the floor heating apparatus. A floor panel 101 made of a decorative panel provided at the bottom of the room as the heating space 100 is heated by a hot water boiler (not shown) as a heat medium to be heated from the back side in contact with the floor panel 101. A pipe 102 and a number of ventilation holes 103 for passing air from the back side to the front side are arranged, and are supported by a joist 104 placed on a skeleton floor 106. A blown air 109 of a blower 105 as a blower is provided between the floor panel 101 and the vehicle body floor 106.
Is formed so that the space 107 can be guided.

As shown in FIG. 1B, the joists 104 are erected perpendicularly to the pipe 102 and are arranged in a required number in the meandering direction of the pipe 102 at arbitrary intervals. The joist 104 is provided with a fitting groove (piping groove) 110 provided on the upper surface thereof, fixing the piping 102 in contact with the back surface of the floor panel 101, and heating the floor panel 101 by heat transfer. Space 1 which is an interval existing between joists 104
07 is communicated with the floor air 11 from the ventilation hole 103.
There is provided a communication groove 111 for making 2 uniform.

The heating capacity of the floor heater is controlled by adjusting the temperature of the heat medium flowing through the pipe 102 while the blower 105 is stopped when the heating load is small, and by controlling the blower when the heating load is large. The configuration is such that the air volume of 105 is adjusted according to the heating load.

As a material of the hot water pipe 102, a copper pipe, a resin such as polyethylene or polybutene, or the like is suitable, but copper having a high thermal conductivity is more preferable in terms of performance. Also, instead of providing the ventilation holes 103 in the floor panel 101,
The same operation and effect can be obtained by using a cloth, a carpet or a porous plate material having good air permeability.

In the above embodiment, when heating is started, hot water flows through the pipe 102 to warm the floor panel 101, and the room can be warmed by natural convection and radiant heat. With this alone, a large heating capacity cannot be obtained, and a considerable time is required until a predetermined heating state is achieved. So, blower 1
At step 05, the air 108 is sucked from the room or outside, and is sent to the space 107 as blown air 109. The blown air 109 comes into direct contact with the surface of the pipe 102 and is warmed.

In particular, in the embodiment of the present invention, in the conventional floor panel, the floor side of the hot water pipe is generally insulated to prevent heat from escaping below the floor. It is exposed so that the air flowing in the space 107 is in direct contact. Therefore, since the blown air 109 comes into direct contact with the surface of the pipe 102, a high heat transfer is obtained, so that the heating capacity can be increased, and the heating time can be shortened and comfortable heating can be performed even under a heavy load condition. it can. Also, the ventilation holes 103
Are provided in large numbers, and the wind speed of the floor blowing air 112 becomes very small, so that the heating capacity can be increased without impairing the comfort of the floor heating.

When the room is warmed and the heating load is reduced, the air flow of the blower 105 is reduced to lower the floor panel 1.
It is economical to increase the ratio of the capacity due to natural convection, radiant heat and heat transfer from 01, and to reduce the input of the blower 105. If the load can be sufficiently covered only by the floor panel 101, it is necessary to stop the blower 105. Preferably, economical floor heating can be performed similarly to the conventional floor panel shown in FIG.

In consideration of economy, when the load is small, the inlet temperature to the hot water pipe 102 is adjusted to control the capacity, and the load exceeding the upper limit of the hot water inlet temperature set from the comfort and safety conditions. In such a case, it is ideal to increase the air blowing amount of the blower 105 according to the load while keeping the hot water inlet temperature at the upper limit. If the air volume is increased while the hot water inlet temperature is kept constant, the outlet temperature drops, so that the capacity can be increased.

Although the above embodiment has been described with reference to an example in which hot water is used as the heat medium, refrigerants used in vapor-compression heat pumps and the like, materials and hydrates that undergo a solid-liquid phase change, and the like are used. A similar effect can be obtained by using a liquid containing liquid or antifreeze.

(Embodiment 2) FIG. 2 is a side sectional view showing a floor heating device according to Embodiment 2 of the present invention. Portions having the same configuration and operation and effect as those of the first embodiment are denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.

The floor panel 201 hermetically covers the decorative plate 202 having a large number of ventilation holes 103, the piping 102 provided in a meandering shape in contact with the back surface of the decorative plate 202, and the entire back side of the decorative plate 202. And a support plate 203 having a pipe groove 212 for fixing and storing the pipe 102. The floor panel 201 is provided with a skeleton floor 206 as in the first embodiment.
Is supported by a joist 204 placed on the air blower.
The space 107 is formed so as to guide the space 1.
The joist 204 supports the support plate 203 on the upper surface, communicates a space 107 between the joists 204 at the lower surface, and a communication groove 111 for making the floor blowing air 112 from the ventilation hole 103 uniform. Is provided.

The support plate 203 has a blower 105.
Blast air 211 from the space 107
3, the ventilation hole 217 faces the pipe 102 so as to pass through the vicinity of the pipe 102 in a concentrated manner.
Are arranged to communicate the space 107 and the piping groove 212. Further, the supporting plate 203 is provided with the ventilation grooves 2 so that the ventilation air can be uniformly distributed to the ventilation holes 103 provided in the decorative plate 202.
13 are provided.

A heat exchanger 209 as a heat exchange means is provided at one end of the floor panel 201 and is disposed above the blower 105, and heats the suction air 108 from inside or outside the room, and then turns into the blower suction air 210. I have to. The hot water boiler 214 is provided with each hot water circuit 215, 21
6 and 218, the heat exchanger 209 and the pipe 102 are connected in this order to form a circulation circuit.

In the above embodiment, when heating is started, hot water flows through the hot water boiler 214, the hot water circuit 215, the heat exchanger 209, and the hot water circuit 216 to the pipe 102 to heat the floor panel 201, and to heat the floor panel 201 inside the room. It can be heated by radiant heat and natural convection. With this alone, a large heating capacity cannot be obtained, and a considerable time is required until a predetermined heating state is achieved. Then, the air 108 is sucked from the room by the blower 105 and the heat exchanger 209 is sucked.
And heat is sent to the space 107 as warm blast air 211. Then, the blown air 211 passes through the ventilation hole 217 in a concentrated manner in the vicinity of the outer periphery of the pipe 102, exchanges heat with the pipe 102, passes through the pipe groove 212 and the ventilation groove 213, and passes through the ventilation hole 103.
Spill evenly from The floor panel 201 is warmed in the process of reaching the blown air 112 from the blown air 211 and the heat radiation is promoted.

In particular, in the embodiment of the present invention, the blower 1
The ventilation hole 211 communicates with the space 107 and the piping groove 212 through the ventilation hole 217 so as to face the piping 102 so that the ventilation air 211 flows from the space 107 to the ventilation hole 103 so as to pass through the vicinity of the piping 102 in a concentrated manner. And the supporting plate 203 is provided with the ventilation holes 1 provided in the decorative plate 202.
Since the ventilation groove 213 is provided so that the blown air can be evenly distributed to the floor 03, the heat exchange performance of the floor panel 201 is increased as compared with the first embodiment by the action of the process from the blown air 211 to the floor blowout air 112. Can be done.

Further, since the heat exchanger 209 employs a structure in which the blown-in air 210 is heated after the sucked-in air 108 from the room is heated, the heating capacity can be further increased.

Further, since the floor panel 201 and the heat exchanger 209 are used in combination, the heat exchanger 209 is small in size as a whole as compared with the heat exchanger 414 of the conventional floor heating apparatus shown in FIG. Since the same performance can be obtained, it is possible to make the whole apparatus compact.

The floor heating device is provided with a heat exchanger 20
9, a series of hot water circuits is configured so that hot water is supplied in the order of the pipe 102. That is, the hot water boiler 214
High-temperature water taken out from the hot water circuit 215 into the heat exchanger 2
09 to release heat and lower the temperature. Then, the pipe 102 passes through the hot water circuit 216 from the left side of FIG. 2 in order, and further lowers the temperature, and returns from the hot water circuit 218 to the hot water boiler 214.

Therefore, even when a large heating capacity is obtained, the temperature of the hot water passing through the pipe 102 can be lowered as compared with the first embodiment, and the surface temperature of the floor panel 201 can be easily maintained at an appropriate temperature, thereby improving the heating comfort. . The economy is the same as in the first embodiment. When the load is small, the heating water temperature is adjusted to control the heating capacity, and when a load exceeding the upper limit of the hot water temperature is applied, the blowing amount is adjusted according to the load. Ideally it will increase.

(Embodiment 3) FIG. 3A is a plan view showing a floor heating apparatus according to Embodiment 3 of the present invention.
(B) It is a sectional side view which shows the floor heating apparatus. Portions having the same configuration and operation and effect as those in the first and second embodiments are denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.

The floor panel 301 has the same configuration as that of the second embodiment, and has a configuration in which the floor blowing air 112 can be blown out. A space 1 for guiding the blown air 211 fed by a blower fan 306 driven by a blower motor 305 under the floor panel 301.
07 and a space 307 for guiding the blower suction air 210 thereunder.

Further, a heat exchanger 209 is provided as a heat exchange means for heating the air 108 sucked from the room so as to surround the entire outer peripheral portion of the floor panel 301. A suction port 310 for taking in the suction air 108 is configured to surround the entire outer periphery of the floor panel 301, and the filter plate 3
Numeral 12 removes dust and forms a floor surface.

In the above embodiment, the function of heating the room by the floor panel 301 by the pipe 102, the blown air 211 by the blower fan 306, and the floor blown air 112 is the same as that described in the second embodiment.

In particular, in the embodiment of the present invention, the cold air 313 on the outer periphery having a relatively low temperature in the room tries to enter the floor panel 301, but is sucked from the suction port 310, so that the blow-off air 112 Floor panel 30
1 is entirely covered with warm air, the uniformity of the surface temperature is improved, and more comfortable floor heating can be performed.

The heating capacity is controlled in the same manner as in Embodiments 1 and 2, when the load is small, the hot water temperature is adjusted to control the capacity. When the load exceeds the upper limit of the hot water temperature, the heating capacity is controlled. It is ideal from the economical point of view to increase the amount of air blown by the air blowing means according to the load. Further, in the above embodiment, the suction port 310 is arranged on the entire outer circumference of the floor panel 301, but the suction port 310 may be a partial outer circumference of the floor panel 301 as long as the purpose can be achieved.

[0044]

As is apparent from the above description, the floor heating apparatus according to the first aspect has a floor panel provided at the bottom of a heating space and having a large number of ventilation holes communicating from the back side to the front side, and the floor panel. A pipe is provided on the back side of the floor panel for heating the panel, through which a heat medium flows, and air blowing means for sending air to a space formed on the back side of the floor panel and flowing out from the ventilation holes, and comprising: It is configured such that the obtained air is in direct contact with the outer surface of the pipe, so that the heating capacity of the floor panel can be increased.

A floor heating device according to a second aspect of the present invention provides a floor panel provided at the bottom of a heating space and having a large number of ventilation holes communicating from the back side to the front side, and a back surface of the floor panel for heating the floor panel. And a pipe for flowing a heat medium, and air blowing means for sending air to a space formed on the back side of the floor panel and flowing out from the ventilation hole, and the air sent by the air blowing means causes the air to flow through the space from the space. The path leading to the hole is configured to pass intensively in the vicinity of the pipe, and the floor blowing air flowing out of the ventilation hole by intensively obtaining heat from the pipe surface having a high temperature further increases the heating capacity. Obtainable.

Further, the floor heating device according to the third aspect of the present invention is provided with a heat exchange means for heating the blown air in addition to the floor panel, so that a larger heating capacity can be obtained and the conventional hot air is blown out. The same capacity can be obtained with a smaller heat exchange means than a floor heating device alone, and the area around the heat exchange means can be made compact.

Further, the floor heating device according to the fourth aspect is configured such that the heat medium passes through the pipes provided on the floor panel after passing through the heat exchange means, so that even when high-capacity heating is obtained. It prevents the temperature of the floor panel from becoming too high, and can provide more comfortable floor heating even when obtaining large-capacity heating.

Further, the floor heating device according to the fifth aspect of the present invention is provided with a suction port of a blowing means on an outer peripheral portion of the floor panel, thereby preventing cool air from entering the floor panel and reducing the surface temperature of the floor panel. The uniformity of the floor can be improved, and more comfortable floor heating can be performed.

In the floor heating apparatus according to the present invention, when controlling the heating capacity, the temperature of the heat medium is adjusted while the blowing means is stopped when the heating load is small, and when the heating load is large. Since the amount of air blow is adjusted according to the heating load, large-capacity heating can be obtained, and the input of the air blow means can be minimized to provide an economic floor heating device.

[Brief description of the drawings]

1A is a side sectional view showing a floor heating device according to a first embodiment of the present invention, and FIG. 1B is a perspective view showing a joist in the floor heating device.

FIG. 2 is a side sectional view showing a floor heating device according to a second embodiment of the present invention.

3A is a plan view showing a floor heating device according to a third embodiment of the present invention, and FIG. 3B is a side sectional view showing the floor heating device.

FIG. 4A is a sectional side view showing a conventional floor heating device. FIG. 4B is a sectional side view showing another conventional floor heating device.

[Explanation of symbols]

 101, 201, 301 Floor panel 102 Piping 103 Ventilation hole 105 Blower (ventilation means) 107 Space 209 Heat exchanger (Heat exchange means) 213 Ventilation groove 215, 216, 218 ... Hot water circuit 217 Ventilation hole 310 ... Suction port 313 ... Cool air

Claims (6)

[Claims] 1. A floor panel provided at the bottom of a heating space and having a number of ventilation holes communicating from the back side to the front side, a pipe provided on the back side of the floor panel for heating the floor panel and flowing a heat medium, A blower that sends air to a space formed on the back side of the floor panel and flows out from the ventilation hole, wherein the air sent by the blower directly contacts the outer surface of the pipe. And floor heating equipment. 2. A floor panel provided at the bottom of the heating space and having a large number of ventilation holes communicating from the back side to the front side, a pipe provided on the back side of the floor panel for heating the floor panel, and flowing a heat medium, Air supply means for sending air to a space formed on the back side of the floor panel and flowing out from the ventilation hole, and a route in which the air sent by the ventilation means reaches the ventilation hole from the space to the vicinity of the pipe. An underfloor heating device characterized by being configured to be concentrated. 3. The floor heating apparatus according to claim 1, wherein a heat exchange means is arranged before or after the blowing means to heat the air. 4. The floor heating apparatus according to claim 1, wherein the heated heat medium passes through a pipe after passing through the heat exchange means. 5. The floor heating device according to claim 1, wherein the blower is provided with a suction port for sucking air in the heating space so as to surround an outer peripheral portion of the floor panel. apparatus. 6. The control of the heating capacity is performed by adjusting the temperature of the heat medium flowing through the pipe while the blowing means is stopped when the heating load is small, and controlling the amount of air blown by the blowing means when the heating load is large. The floor heating device according to any one of claims 1 to 5, wherein the floor heating device is configured to be adjusted according to a load.