JP2003279056A - Floor heating structure of hot water type - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost floor heating structure of hot water type giving a uniform temperature over the whole surface of floor plates laid on the floor of any building, wherein the temperature of the floor plate surface is quickly raised, less labor is needed for installing a hot water duct when the floor plates are installed, and the workability is excellent. <P>SOLUTION: The floor heating structure of hot water type includes the hot water duct installed between a floor underlay material and a floor finishing material wherein the hot water duct has a forward passage part and a return passage part, and the forward passage part has a communication by its end with the return passage part, and it is arranged so that the forward passage part and the return passage part can make heat exchange directly. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water type floor heating structure, and more particularly to a hot water type floor heating structure having excellent soaking performance and temperature raising performance.

[0002]

2. Description of the Related Art Conventionally, hot-water floor heating structures for buildings include hot-water type and electric type as heat sources. In addition, the hot water type also has an integrated type that has a built-in hot water passage in the floor finishing plate itself, and a separation type in which the hot water passage is placed on the base material and the floor finishing plate is attached to it. There are mold types, and they are roughly classified into two types.

For example, in Japanese Unexamined Patent Publication (Kokai) No. 7-158871, a hot water passage is provided in a groove provided in a wooden base material, and a hot water passage is coated on the hot water passage, and
A structure in which the surface is covered with a floor finishing material is disclosed.

The conventional hot water passage has a single-layer structure, and there is no distinction between the forward path and the return path. The hot water warmed by the water heater enters from one end of the hot water passage and heats the floor finishing plate to remove heat energy, which lowers the temperature and is discharged from the other end of the hot water passage and returned to the water heater. The structure is such that the water intake route and the condensate route are not related at all.

[0005]

The hot water passage of the conventional type hot water floor heating structure in the hot water floor heating structure is merely a single pipe, and the temperature of the hot water near the water inlet is a predetermined temperature. However, the temperature of the hot water in the portion close to the drainage port is considerably reduced by the heat taken by the floor finishing plate, which makes it difficult for the floor finishing plate surface temperature to become uniform. As disclosed in Japanese Patent Laid-Open No. 7-158871, a uniform effect can be obtained by bringing a heat equalizing plate into contact with a hot water passage to diffuse heat, but it is impossible to prevent uneven temperature on the floor plate surface. Also, the heating speed of the floorboard was slow.

In order to improve this point, it has been attempted to lengthen the hot water passages to shorten the distance between the hot water passages and to make the arrangement order of the hot water passages complicated. However, this method has the problems that the cost of the hot water passage increases, the construction is troublesome, and the longer the water passage is, the more likely it is that problems will occur.Moreover, the temperature unevenness on the floor plate surface cannot be eliminated, and the floor plate surface cannot be eliminated. It was quite difficult to speed up the temperature rising speed.

It is an object of the present invention to provide a hot water type floor heating structure, which has a uniform surface temperature over the entire surface of the floor board provided therein, has a fast heating speed, and has good workability at low cost.

[0008]

In order to achieve the above object, a hot water type floor heating structure of the present invention is a hot water type floor heating structure having a hot water flow passage disposed between a floor base material and a floor finishing material. In the above, the hot water passage has a forward path and a return path, communicates with the return path at the end of the forward path, and the forward path and the return path are formed so that heat can be directly exchanged. It is a thing.

The hot water passage is composed of two pipes.
The pipe lines may be directly contacted with each other so as to be capable of heat exchange, and one pipe line may be a forward path part and the other may be a return path part, and the end of the forward path part and the start part of the return path part may be formed to communicate with each other. It is also possible to divide the cross-section into two over the entire length of one hot water flow passage and connect the ends thereof so that one is the forward path and the other is the return path.

In addition, the cross section of the hot water passage over the entire length is 3
It is also possible to divide the center part into the outward path and the left and right parts into the return path, and connect the end of the outward path and the start part of the return path. Furthermore, it is also possible to provide a small-diameter hot water passage in the large-diameter hot water passage, connect the ends thereof to one another, and use one as a forward passage and the other as a return passage. The shape of the hot water passage may be a circular or elliptical hot water passage in cross section, or may be rectangular in cross section. It may have a shape other than these.

When one hot water channel is divided into 3 minutes, a rectangular shape is easy to manufacture. Further, in order to improve the heat transfer efficiency, it is preferable that the cross-sectional shape is rectangular and the long side is in contact with the floorboard.

According to this structure, the warm water that has entered from the water inlet passes through the outward path, gradually lowers the temperature while warming the floor finishing plate, and reaches the end of the outward path. Since the end of the outward path communicates with the return path, the hot water that has entered returns through the return path and is drained from the drain port at the end. At this time, the temperature at the end of the forward path and the temperature at the start of the return path are the same, and the temperature does not change due to heat exchange. On the other hand, the water inlet of the outward path is the hottest,
Since the drainage port at the end of the return path has the lowest temperature, the temperature of the water inlet decreases due to heat exchange in this part, and the temperature of the drainage port rises. Disappear.

As a result of this heat exchange being performed everywhere in the outward path and the return path, the temperature is averaged over the entire length of the hot water passage. Therefore, the temperature of the portion where the hot water passage is provided becomes uniform at any place, and the temperature unevenness becomes extremely small. In addition, since the entire hot water passage is rapidly equalized to the incoming water temperature with the lapse of time after starting the incoming water, the temperature rising rate of the floor plate is also high.

In the conventional water passage through the single water passage, the temperature of the hot water is only transferred to the floor plate, and the heat that has not been transferred is once discharged from the floor structure together with the drainage. The high temperature stays high and the low temperature stays low over time.
Therefore, temperature unevenness of the entire floorboard is likely to occur, it takes time for the entire floorboard to reach a temperature close to a predetermined temperature, and it takes a long time for the floorboard temperature to become uniform and constant. As described above, according to the present invention, the floor heating structure has a high rate of temperature rise of the floor plate, is uniform, and has no temperature unevenness.

Further, since the forward path and the return path of the hot water flow passage follow the same route, the forward flow path and the return flow path are handled integrally when the hot water flow path is arranged on the floor base material. Therefore, the labor for arranging the hot water passage can be reduced by half, and the workability can be remarkably improved.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an example of an embodiment of a hot water type floor heating structure according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing an example in which a hot water passage according to the hot water type floor heating structure of the present invention is arranged on a floor base material, and FIG. 2 is A in FIG.
FIG. 3 is an enlarged sectional view taken along line A, FIG. 3 is a perspective view showing an embodiment of a hot water passage having a double structure of the hot water floor heating structure of the present invention, and FIG. 4 is another embodiment of the hot water passage of the present invention. Shows the morphology,
(A) is a sectional view thereof, and (B) is a side sectional view thereof.
FIG. 5: is sectional drawing which shows other embodiment of the hot water flow path of this invention, (a) shows 3 division | segmentation shape, (b) shows 2 division | segmentation shape.
FIG. 6 shows an arrangement shape of the hot water passage of the test body for demonstrating the effect of the hot water floor heating structure of the present invention. Shows the case where the conventional hot water channel is used.

In the hot water type floor heating structure 1 shown in this example, the hot water passages 2 of the present invention are arranged in a predetermined arrangement on a floor base material 7. The ends of the hot water passage 2 are a water inlet 4 and a water outlet 5, which are opened at a predetermined position at one end of the floor structure.

In order to maintain the floor strength, the hot water passage 2
Was laid between the joists 9, but it may be embedded in the floor base material 7 or the floor base plywood 8. The material, size, installation interval, etc. of the joist 9 can be appropriately determined according to the size of the floor base plywood 8 and the floor finishing board 10 on the surface, but only the thickness of the joist 9 substantially matches the thickness of the hot water passage 2 to be installed. Need to be kept. The shape in which the hot water passage 2 is arranged is not basically limited, but various shapes such as a folded shape other than the spiral shape as in this example are conceivable.

In the hot water type floor heating structure of the present invention, the hot water flowing out from the water heater 6 and entering from the water inlet 4 reaches the tip portion 2e through the outward portion of the hot water passage 2 and reaches the communicating return portion. After entering and turning back, the return path is reversed and the water is drained from the drain port 5 and returned to the water heater.

As for the structure of the hot water passage 2, when the outward passage and the return passage are formed by different passages, they are brought into contact with each other to allow direct heat exchange. Also in this case, the tip 2e of the outward path of the hot water passage is closed so that the hot water can be folded back, and the structure is connected to the return path.

Various forms are conceivable as a structure in which the cross section of one hot water passage 2 is divided into a forward path and a return path, and the hot water can be folded back by communicating with the tip 2e of the forward path. As one preferable embodiment, a partition plate having a double structure composed of an outer pipe 2a and an inner pipe 2b inserted into the outer pipe as shown in FIG. 3, and a hot water passage 2 having a circular cross section as shown in FIG. There is a structure in which the divided pipe 2d is divided into two parts and one of the divided pipes 2d is used as a forward path portion and the other is used as a return path portion.

Further, as shown in FIG. 5A, there is also a structure in which the cross section of the hot water passage 2 having a rectangular cross section is divided into three, and the central divided pipe 2dc is used as the outward passage and the left and right divided pipes 2ds are used as the return passage.
Further, as shown in FIG. 5B, there is also a structure in which the cross section of the hot water passage 2 having a rectangular cross section is divided into two and the left and right divided pipes 2d are used as the outward passage or the return passage. At this time, the cross-sectional shape of the hot water passage may be an elliptical shape other than a circular shape or a rectangular shape, a square shape, or any other shape.

The partitioning direction of the partitioning plate 2c may be horizontal or vertical to the floor plate. The divided pipe is divided into right and left or upper and lower parts to be a forward path portion or a return path portion.

Among these, when the water passage having a rectangular cross section is arranged so that the long side of the rectangle is in contact with the floor finishing plate, the contact area is large with respect to the floor finishing plate, which is extremely advantageous for heat transfer, and a preferable mode. Is.

The hot water passage 2 is made of synthetic resin such as polyethylene, nylon, polyester, aluminum,
Metallic materials such as stainless steel and copper can be used.
However, it is not limited to these. Moreover, the common sense thickness of the floor structure is about 10 mm to 3 excluding the floor base material 7.
Since it is about 0 mm, the dimension of the hot water passage 2 is about 5 mm to 15 mm in outer diameter when the cross sectional shape is circular, and about 5 m in height when the cross sectional shape is rectangular.
The optimum range is from m to 15 mm.

When the outer pipe 2a and the inner pipe 2b have a double hot water flow passage structure, assuming that the outer pipe 2a has a diameter of about 5 mm to 15 mm, it comes inside when the thickness of the pipe is 0.5 mm. The diameter of the inner tube is preferably about 3.3 mm to 10.4 mm. The inner dimensions of the outer and inner pipe diameters may be set so that the outward hot water and the return hot water have approximately the same flow rate per unit time, and the effective cross-sectional areas of the outgoing and return pipes are almost equal. . Further, in the case of a hot water flow passage of a type that is divided into two or more, it is sufficient to divide the hot water flow passage so that the cross-sectional areas of the water passages of the forward path and the return path are equal. In this way, the disposition of the hot water passage 2 on the floor base material 7 is completed.

Next, the heat equalizing plate 3 is usually laid on the floor structure thus completed. The material of the soaking plate 3 is aluminum,
A thin plate made of metal having good thermal conductivity such as copper is used. A thickness of about 0.1 mm to 3.0 mm is advantageous in terms of handling and cost. What is conventionally used may be sufficient.

A floor base plywood 8 having a thickness of about 9 mm to 12 mm is attached to the floor structure thus completed to be laid, and a floor finishing plate 10 is attached thereon. At this time, instead of the floor base plywood 8, wood boards such as medium specific gravity fiber board, OSB, and particle board may be used. Further, the thickness of the floor base plywood 8 is not limited to about 9 mm to 12 mm, but may be in a common sense range.

The floor finishing plate 10 has a conventional thickness of about 3 m.
A general wooden floorboard of about m to 15 mm may be used. The construction method may be a conventional method. The floor base plywood 8 may be omitted if the floor finishing plate 10 itself has sufficient strength. Next, the water inlet 4 and the drain outlet 5 provided at one end of the floor structure thus completed are connected to the water heater 6 to complete the hot water floor heating structure 1 of the present invention.

The effect of the present invention will be demonstrated below with the test body shown in FIG. [Test sample of the present invention] A plywood base material having a thickness of 30 mm, a width of 909 mm and a length of 1820 mm was used as a floor base material, and the surface of the floor base material had a folded water flow passage as shown in FIG. Engraved groove for waterway. The hot water channel has a double structure consisting of an outer pipe and an inner pipe. The material of the hot water channel is made of hard polyethylene with a thickness of 0.5 mm, the outer dimensions of the outer tube are 6.0 mm and the outer dimension of the inner tube is 4.0 mm.
And The outer tube was used as the outward path and the inner tube was used as the return path.

A double-structured hot water passage having a circular cross section was embedded in the groove for the hot water passage. On top of that, thickness 0.
A 3 mm aluminum thin plate is used as a heat equalizing plate, and urethane adhesive is applied to the entire surface and pasted, and a thickness of 9 mm is applied on the heat equalizing plate.
Adhere the floor base plywood of No.3 with urethane adhesive, and then further attach the floor finish board made by sticking the veneer of oak of 0.3mm thickness to the plywood base material of 9.0mm thickness. A hot water type floor heating structure 11 having a thickness of about 48 mm, a width of 909 mm and a length of 1820 mm was produced and used as a test body of the present invention. The water inlet and the water outlet are at the same position.

[Comparative Test Specimen] In order to secure the same amount of flowing water per unit time as the test specimen of the present invention, an ordinary hot water passage having a single structure with a circular cross section having a diameter of 4.0 mm is used. The same as the test body 11 of the present invention, except that it has a folded shape as shown in (b) of FIG. 6 and the drain port is located at the end opposite to the water inlet port. A type of test body 12 was produced.

The total length of the forward and return paths of the hot water passage of the test body of the present invention and the total length of the hot water passage of the comparative test body were set to be the same length. Further, the test piece of the present invention and the comparative test piece were made to have the same amount of hot water discharge per unit time and hot water discharge temperature of the water heater.

The above-mentioned test bodies 11 and 12 were subjected to the floor plate surface temperature rise test described below. [Test method] Connect the water inlet of the test piece to a water heater,
Set the water inlet temperature to 60 ° C, and immediately after passing hot water, 15 minutes, 30
The floor plate surface temperature was measured after 60 minutes, 90 minutes, and 120 minutes. The measurement position was measured at nine positions shown in FIG. The rate of temperature rise of the floor plate surface temperature and the temperature variation due to the surface position of the floor plate were measured.
The measurement method was carried out by attaching a thermocouple type surface thermometer.

The test results are shown in Tables 1 and 2 below. [Test Results] Table 1: Test body of the present invention Unit: ° C

Table 2: Comparative specimen Unit: ° C

[Discussion of Test Results] As can be seen from the above test results, the test body of the present invention has less variation in the surface temperature of the test body than the comparative test body. Also, the surface temperature is 3
It takes about 45 minutes for the test specimen of the present invention to reach 0 ° C.
It takes about 60 minutes for the comparative test body, while it takes about 60 minutes. The test body of the present invention is also superior in the rate of temperature rise.

[0038]

As described above, according to the hot water type floor heating structure according to the present invention, the heat energy is directly and effectively exchanged with each other while the forward path and the return path are flowing hot water, so that the water inlet , The temperature difference between the average temperature of the hot water in the forward portion and the return portion near the drain port and the average temperature of the hot water in the inlet portion and the return passage portion far from the drain port is reduced. As a result of this heat exchange being performed everywhere in the outward path and the return path, the temperature is averaged over the entire length of the hot water passage. Therefore, the temperature of the portion where the hot water passage is provided is uniform at any place, and the temperature unevenness of the entire floorboard of the room is extremely small. Further, with the lapse of time from the start of water entry, the entire warm water flow passage is uniformly homogenized so as to rapidly approach the water entry temperature, so the rate of temperature rise of the floorboard is also high.

Further, since it is possible to integrally handle the outward path and the return path, it is possible to halve the time and labor required for disposing the hot water passage at the time of construction, and the workability is remarkably improved. It has the effect of becoming a thing.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an embodiment of a hot water type floor heating structure of the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing an embodiment of a double structure of a hot water passage according to the present invention.

FIG. 4 (a) is a cross-sectional view showing another embodiment of the hot water channel of the present invention. (B) A side sectional view of the above.

5A and 5B are cross-sectional views showing another embodiment of the hot water passage according to the present invention.

FIG. 6 (a) is a schematic plan view showing an arrangement shape of a hot water passage of the test body of the present invention. (B) A schematic plan view showing an arrangement shape of the hot water passage of the comparative test body.

[Explanation of symbols]

1 Hot water floor heating structure of the present invention 2 hot water channels 2a outer tube 2b inner tube 2c partition board 2d split tube 2e Tip 2dc central split tube 2ds left and right split pipe 3 soaking plate 4 water inlet 5 drainage outlet 6 water heater 7 Floor base material 8 floor base plywood 9 joist 10 floor finishing boards 11 Specimen of the present invention 12 Conventional type test body

Continued front page    F-term (reference) 2E220 AA04 AA37 AA39 AA51 AB09                       AC03 BB03 CA02 CA05 CA07                       CA71 DA02 DB09 DB12 EA11                       FA11 GA22X GA22Y GA25X                       GA25Y GA27X GA32Y GB05X                       GB05Y GB37Z GB43X GB45X                       GB46Y GB47Y                 3L070 BD03 BD07 BD16

Claims (3)

[Claims] 1. A hot water type floor heating structure having a hot water passage provided between a floor base material and a floor finishing material, wherein the hot water passage has an outward path portion and a return path portion, and at the end of the outward path portion. A hot water floor heating structure, which is in communication with a return path, and the forward path and the return path are directly heat-exchangeable. 2. The hot water flow passage is a single water flow passage having a cross section of the water flow passage divided into at least two, and a part of the water flow passage serves as a forward passage portion and the other portion serves as a return passage portion. Hot water floor heating structure described in. 3. The hot water passage has a double structure composed of an outer pipe and an inner pipe inserted into the outer pipe, and the outer pipe and the inner pipe are used as a forward path portion or a return path portion. The hot water floor heating structure according to claim 1.