JP3142947B2 - Thermal storage floor heating system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative floor heating apparatus for heating a floor or the like by laying a heat storage board and a heating element on the floor.

[0002]

2. Description of the Related Art A conventional thermal storage type floor heating apparatus uses a flat thermal storage board 1 having a uniform thickness as shown in FIG. 9 and a floor board on a joist 2 as shown in FIG. 3, a heat insulating material 4 is laid on a lower plate 7 provided at the bottom of a space surrounded by the joist 1 and the floor plate 3, and the heat storage boards 1, 1 having a heating element 5 sandwiched therebetween are heat insulating materials. 4, and a space 6 is formed between the floor plate 3 and the upper surface of the heat storage board 1.

[0003] The distance dimension B of the space 6 is defined in accordance with the heat transfer coefficient of the surface material such as the floor plate 3. When the heat storage temperature is high, the space 6 functions as an effective heat insulating layer, and the heat storage board 1 The heat radiation from the floor to the floor is suppressed.

[0004]

In the structure of the prior art, however , the height B of the space 6 is reduced to a predetermined size due to variations in the height A of the joists 2 and variations in the thickness of the heat storage board 1 and warpage. It is very difficult to maintain the temperature, and it is difficult to obtain a stable bed temperature. That is, if the B dimension of the space 6 changes and the distance between the heat storage board 1 and the floor plate 3 becomes smaller than a predetermined distance, the heat radiation from the heat storage board 1 improves, the floor temperature increases, and conversely, the B dimension Is larger than a predetermined dimension and the distance between the heat storage board 1 and the floor plate 3 is larger than the predetermined distance, the heat radiation from the heat storage board 1 is deteriorated, the floor temperature is lowered, and the floor temperature varies. Was likely to occur.

[0005] In addition, joists 2 for fixing the floor boards 3 are provided at regular intervals (usually at a pitch of 303 mm), and a heat storage board 1 and a heating element 5 are installed in a space surrounded by the parallel joists 2 and 2 and the floor boards 3. Therefore, the temperature of the partial temperature T1 of the floor plate 3 between the joists 2 and 2 having the heat generating portion and the temperature T2 of the portion of the floor plate 3 on the joist 2 without the heat generating portion differ.

The relationship is T2 ° C. <T1 ° C.
When the temperature T1 of the upper part is low and the surface of the floorboard 3 is touched by hand,
There has been a risk that temperature fluctuations may occur such that a temperature difference can be felt. To solve the problem of keeping the B dimension of the space 6 at a predetermined size, an elastic heat insulating material is provided at the lower portion, and a spacer is provided between the upper surface of the heat storage board 1 and the lower surface of the floor plate 3 to thereby reduce the B size of the space 6. A method of keeping the dimensions at a predetermined size has been proposed. This method improves the temperature difference between the surface temperature of the floorboard 3 between the joists 2 and 2 and the surface temperature of the floorboard 3 above the joists 2. Since the effect is small and a spacer of another part is required, there remains a problem that the cost is increased including the construction.

In this type of heat storage type floor heating device, since members such as the heat insulating material 4, the heat storage board 1, and the heating element 5 are arranged between the joists 2, the floor is formed. Floor height is required, and the height of the floor surface is higher than that of the flooring floor without floor heating. For this reason, the floor height is reduced by improving the heat storage efficiency of the heat storage board 1 to reduce the thickness of the heat storage board 1 or by reducing the thickness of the heat insulating material 4 by using a heat insulating material having good heat insulating efficiency. However, in this type of regenerative floor heating system,
There is also a problem that a structure that can minimize the floor height is desirable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a regenerative floor heating apparatus capable of reducing the variation in floor surface temperature. It is in. A second object of the present invention is to provide a heat storage type floor heating device in which the strength of the heat storage board alone is enhanced in addition to the above objects.

It is a further object of the present invention to provide a regenerative floor heating apparatus capable of reducing the variation in the temperature of the floor surface. The object of the invention of claim 4 is that the spatial distance between the surface material such as a floor plate and the upper surface of the heat storage board can be secured to a predetermined size corresponding to the heat transfer coefficient of the surface material. It is an object of the present invention to provide a regenerative floor heating device capable of obtaining a suitable and stable floor temperature.

An object of the invention of claim 5 is to eliminate wasteful heat radiation under the floor, to reduce the thickness of the heat insulating material, and to reduce the floor height of the entire apparatus. An object is to provide a regenerative floor heating device. A sixth object of the present invention is to provide a regenerative floor heating device in which the strength of a single heat storage board is increased in addition to the object of the fifth aspect.

It is an object of the present invention to provide a regenerative floor heating device capable of further reducing the floor height.

[0012]

According to the first aspect of the present invention, a surface material such as a floor plate is installed on a parallelly arranged joist, and a space surrounded by the surface material and the two parallel joists is arranged. In a heat storage type floor heating device in which a heat storage board is arranged on a heat insulating material to be laid under the floor and a space is formed between the upper surface of the heat storage board and the lower surface of the surface material, a part of the heat storage board located near a joist is surfaced. This is in contact with the lower surface of the material.

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, on both sides of the upper surface of the heat storage board, there are provided convex portions for contacting an upper end surface with a lower surface of the surface material. According to a third aspect of the present invention, in the configuration of the second aspect , the shape of the convex portion is changed so as to gradually decrease toward the inside in the width direction of the heat storage board. According to a fourth aspect of the present invention, in the configuration of the second or third aspect , the height of the convex portion is selected in accordance with the thermal conductivity of the surface material.

According to a fifth aspect of the present invention, in the configuration of the first aspect of the present invention, the heat storage board is composed of two upper and lower heat storage boards having a heating element sandwiched therebetween in the middle, and a lower heat storage board on the lower side of the heating element. A space is formed between the board and the heat insulating material. According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the present invention, convex portions are provided on both sides of the lower surface of the lower heat storage board so that the lower end surface is in contact with the upper surface of the heat insulating material.

According to a seventh aspect of the present invention, in the configuration of the sixth aspect of the present invention, the convex portion is provided substantially all around the heat storage board.

[0016]

According to the first aspect of the present invention, since a part of the heat storage board located near the joist is brought into contact with the lower surface of the surface material, the temperature of the surface material above the joist can be increased.
Therefore, the temperature variation on the floor surface is reduced. According to the second aspect of the present invention, the heat storage board is provided on both sides of the upper surface thereof with the protruding portion for making the upper end face abut on the lower surface of the surface material. Trouble such as breakage of the heat storage board during and during construction is reduced, and handling becomes easier.

According to the third aspect of the present invention, in the configuration of the second aspect , the shape of the convex portion is changed so as to gradually decrease toward the inside in the width direction of the heat storage board.
Since the amount of heat transfer to the upper part of the joist can be increased, and the temperature decreases as the temperature increases toward the center between the joists, the temperature variation of the floor surface can be further reduced.

According to the fourth aspect of the present invention, in the configuration of the second and third aspects, the height of the convex portion is selected in accordance with the thermal conductivity of the surface material. The distance dimension of the space between the board and the upper surface can be secured to a predetermined dimension corresponding to the heat transfer coefficient of the surface material, so that it is suitable for the surface material,
And a stable floor surface temperature can be obtained. According to a fifth aspect of the present invention, in the configuration according to the first aspect of the present invention, the heat storage board is composed of two upper and lower heat storage boards having a heating element sandwiched therebetween in the middle, and a lower heat storage board of the heating element. Since a space is formed between the heat insulating material and this space, this space becomes a heat insulating layer and can reduce wasteful heat radiation under the floor,
Therefore, the thickness of the heat insulating material can be reduced, and as a result, the floor height of the entire apparatus can be reduced.

According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the present invention, on both lower surfaces of the lower heat storage board,
Since the convex portion for contacting the lower end surface is provided on the upper surface of the heat insulating material, the strength of the lower heat storage board can be increased similarly to the second aspect of the invention. According to the invention of claim 7,
In the configuration according to the sixth aspect of the present invention, the convection in the space between the upper surface of the heat insulating material and the lower surface of the lower heat storage board is reduced because the convex portion is provided substantially all around the heat storage board. And a further heat insulating effect can be obtained, and the floor height can be further reduced.

[0020]

The present invention will be described below with reference to examples. (Embodiment 1) FIG. 1 shows this embodiment. In the present embodiment, a floor plate 3 as a surface material is placed on a joist 2 which is erected at predetermined intervals on a lower plate 7 in the same manner as in the conventional example. And a heat insulating material 4 having elasticity is laid on a lower plate 7 provided at the bottom of the space surrounded by the parallel joists 2 and 2 and the floor plate 3, and the upper and lower parts 2 sandwiching the heating element 5 in a sandwich shape. Thermal storage boards 1a
, 1b are arranged above the heat insulating material 4, and a space 6 is formed between the floor plate 3 and the upper heat storage board 1a.

As shown in FIG. 2, the upper heat storage board 1a is integrally provided with upwardly projecting convex portions 8, 8 on both sides of the upper surface thereof. Two, two
The convex portions 8, 8 are located in the vicinity, and the upper end surfaces of the convex portions 8, 8 are in contact with the lower surface of the floor plate 3. This configuration is a feature of the present embodiment different from the conventional example. The heat storage board 1a used here is formed by processing the height L of the convex portions 8, 8 to the distance dimension B of the space 6 defined in accordance with the thermal conductivity of the floor plate 3.

The heat storage boards 1a and 1b are made of granular cross-linked polyethylene impregnated with a latent heat storage material, paraffin, and further molded by hot pressing. FIG. 3 is a sectional view of the heat storage board 1a. Show. Figure 4 of course
As shown in FIG. 4A, a material obtained by kneading and molding paraffin and a resin may be used. As shown in FIG. 4B, a latent heat storage material such as sodium sulfate or calcium chloride is placed in a container 11 such as polyethylene. 12 may be sealed.

In this embodiment, however, the heat storage boards 1a and 1b including the heating element 5 are generated by the elasticity of the heat insulating material 4 having elasticity.
Is pushed upward, so that the upper heat storage board 1a
The convex portions 8, 8 are constructed so as to be in contact with the lower surface of the floor plate 3 without any gap, and the height of the convex portions 8, 8 is set to a size which is an optimum heat radiation condition corresponding to the thermal conductivity of the floor plate 3. Since it is set, the dimension B of the space 6 formed between the heat storage board 1a and the lower surface of the floorboard 3 can be secured to a predetermined dimension.

The protruding portions 8, 8 are formed integrally with the heat storage board 1a, and are provided on both sides of the upper surface of the heat storage board 1a near the joists 2, 2, so that they come into contact with the lower surface of the floor plate 3. The temperature from the raised portions 8, 8 is directly transferred to the floorboard 3 and the temperature of the floorboard 3 above the joist 2 can be increased. Therefore, the difference between the temperature of the floor plate 3 and the temperature of the floor plate 3 becomes small, and the dimension B of the space 6 can be secured to a predetermined dimension, so that the temperature on the floor surface can be stabilized.

(Embodiment 2) In this embodiment, as the upper heat storage board 1a, the convex portions 8, 8 on both sides of the upper surface do not have a uniform height as shown in FIG. This embodiment is different from the first embodiment in that the first embodiment is changed. FIG. 5 is a cross-sectional view of a working example of the present embodiment using the heat storage board 1a.

In this embodiment, the dimension B of the space 6 can be maintained at a predetermined value as in the first embodiment, and the height L of the protruding portions 8, 8 can be increased as shown in FIG. Since the height is not uniform but is gradually reduced inward in the width direction, the amount of heat transferred to the upper part of the joist 2 where the temperature is low is large, and the central part between the joists 2 and 2 where the temperature is high. , The temperature difference on the floor surface can be further improved.

(Embodiment 3) In the present embodiment, as shown in FIG. 7 , on both sides of the lower surface of the lower heat storage board 1b, projecting portions 9, 9 similar to the projecting portions 8 are integrally protruded downward. And the lower end surfaces of the convex portions 9 and 9
The third embodiment is different from the first embodiment in that a space 10 is placed between the upper surface of the heat insulating material 4 and the lower surface of the heat storage board 1b.

In this embodiment, the space 10 serves as an air heat insulating layer having a higher heat insulating efficiency than the heat insulating material 4 and the heat generating element 5
The heat generated from the heat storage boards 1a and 1b, which gradually accumulates heat and then gradually radiates, tends to escape to the lower side of the floor. However, the heat is insulated in the space 10 so that useless heat radiation can be prevented. . Here, since the thickness of the heat storage board 1b is not flat as in the case of the first embodiment, the thickness is increased by the height of the convex portion 9, but since the thickness of the heat insulating material 4 can be further reduced, Considering the entire floor heating device, the floor height H from the lower plate 7 can be smaller than the floor height h in the case of the first embodiment shown in FIG.

The convex portion 9 may be provided not only on both sides of the lower surface of the heat storage board 1b but also over the entire circumference as shown in FIG. 8, in which case the convection in the space 10 is reduced, and The heat insulating effect is further increased, and the floor height H can be further reduced. It goes without saying that the configuration of the lower heat storage board 1b of the present embodiment may be adopted in the second embodiment.

[0030]

According to the first aspect of the present invention, since a part of the heat storage board located near the joist is brought into contact with the lower surface of the surface material, the temperature of the surface material above the joist can be increased,
Therefore, there is an effect that variation in the temperature of the floor surface can be reduced. According to the second aspect of the present invention, the heat storage board is provided on both sides of the upper surface thereof with the protruding portion for making the upper end face abut on the lower surface of the surface material. There is an effect that troubles such as breakage of the heat storage board during and during construction are reduced, and handling becomes easy.

According to a third aspect of the present invention, in the configuration of the second aspect , the shape of the convex portion is changed so as to gradually decrease toward the inside in the width direction of the heat storage board. Since the amount of heat transfer can be increased, and the temperature decreases as the temperature increases toward the center of the joists, there is an effect that the temperature variation of the floor surface can be further reduced.

According to a fourth aspect of the present invention, in the configuration of the second and third aspects of the present invention, the height of the convex portion is selected according to the thermal conductivity of the surface material. The distance dimension of the space between the upper surface and the upper surface can be secured to a predetermined dimension corresponding to the heat transfer coefficient of the surface material, so that there is an effect that a stable floor surface temperature suitable for the surface material and obtained. Claim 5
According to the invention of the first aspect, in the structure of the first aspect, the heat storage board is composed of two upper and lower heat storage boards having a heating element sandwiched therebetween in the middle, and a lower heat storage board and a heat insulating material of the heating element are provided. This space forms a heat insulating layer, which can reduce wasteful heat radiation under the floor.Thus, the thickness of the heat insulating material can be reduced. There is an effect that the surface height can be reduced.

According to a sixth aspect of the present invention, in the configuration of the fifth aspect of the present invention, on both sides of the lower surface of the lower heat storage board, there are provided convex portions for bringing the lower end surface into contact with the upper surface of the heat insulating material. As in the second aspect of the invention, there is an effect that the strength of the lower heat storage board can be increased. According to a seventh aspect of the present invention, in the configuration of the sixth aspect, the convex portion is provided on substantially the entire circumference of the heat storage board, so that the space between the upper surface of the heat insulating material and the lower surface of the lower heat storage board. Convection can be reduced, so that a further heat insulating effect can be obtained and the floor height can be further reduced.

[Brief description of the drawings]

FIG. 1 is a partially omitted cross-sectional view of a first embodiment of the present invention.

FIG. 2 is a perspective view of the upper heat storage board used in the same.

FIG. 3 is a cross-sectional view of an upper heat storage board used in the same as above.

FIG. 4A is a cross-sectional view of another example of the upper heat storage board. (B) is a sectional view of another example of the upper heat storage board.

FIG. 5 is a partially omitted cross-sectional view of Embodiment 2 of the present invention.

FIG. 6 is a sectional view of an upper heat storage board used in the same.

FIG. 7 is a partially omitted cross-sectional view of Embodiment 3 of the present invention.

FIG. 8 is a perspective view of the upper heat storage board used in the same as above.

FIG. 9 is a perspective view of an upper heat storage board used in a conventional example.

FIG. 10 is a cross-sectional view with a part omitted from the above.

[Explanation of symbols]

 1a, 1b heat storage board 2 joist 3 floor plate 4 heat insulating material 5 heating element 6 space 7 lower plate 8 convex part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-254231 (JP, A) JP-A-59-119121 (JP, A) JP-A-3-207928 (JP, A) 95014 (JP, U) Hira 4-82611 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24D 13/02 F24D 11/00 H05B 3/20 338

Claims (7)

(57) [Claims] A heat storage board is provided on a heat insulating material laid under the floor in a space surrounded by the surface material and the two joists arranged in parallel with each other. In the heat storage type floor heating device in which a space is formed between the upper surface of the heat storage board and the lower surface of the surface material, a part of the heat storage board located near the joist is brought into contact with the lower surface of the surface material. Thermal storage floor heating system. 2. The regenerative floor heating device according to claim 1, wherein a convex portion is provided on both sides of the upper surface of the heat storage board so that an upper end surface of the heat storage board is in contact with a lower surface of the surface material. 3. The regenerative floor heating device according to claim 2, wherein the shape of the convex portion is gradually reduced toward the inside in the width direction of the heat storage board. 4. The regenerative floor heating apparatus according to claim 2, wherein the height of the convex portion is selected in accordance with the thermal conductivity of the surface material. 5. The heat storage board comprises two upper and lower heat storage boards having a heating element sandwiched therebetween in the middle, and a space is formed between the lower heat storage board and the heat insulating material of the heating element. The regenerative floor heating device according to claim 1, wherein: 6. The regenerative floor heating apparatus according to claim 5, wherein a convex portion is provided on both sides of the lower surface of the lower heat storage board, the lower end surface being in contact with the upper surface of the heat insulating material. 7. The regenerative floor heating device according to claim 6, wherein the convex portion is provided on substantially the entire periphery of the heat storage board.