JPH07332690A - Floor heating device and heating floor structure - Google Patents

Abstract

PURPOSE:To achieve a rapid floor heating, and at the same time, keep the heating effect of a certain degree for a long period of time by setting a heat accumulating temperature of a heat accumulating element which covers the upper surface of a flat heating element higher than a heat accumulating temperature of a heat accumulating element which covers the lower surface of the flat heating element. CONSTITUTION:A heat accumulating temperature of a heat accumulating element 2 which is arranged on the upper surface of a flat heating element 1 is set higher than a heat accumulating temperature of a heat accumulating element 3 which is arranged on the lower surface of the flat heating element 1. Then, the temperature difference can be set at approx. 5 deg.C, but it may be set larger than 5 deg.C. At the time of heat emitting, since the heat accumulating temperature of the heat accumulating element 2 which covers the upper part of the flat heating element 1 is higher, a heat flow at the initial stage of the heat emitting becomes larger, and a floor temperature can be comparatively quickly raised to a high temperature level. When the initial heat emitting of the upper part heat accumulating element 2 is completed, the upper part heat accumulating element 2 becomes the same level as the lower part heat accumulating element 3, and the upper part heat accumulating element 2 performs a floor heating by cooperating with the lower part heat accumulating element 3 of the low heat accumulating temperature, and the floor heating can be continued at a comparatively low temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating system and a heating floor structure, and more particularly, it relates to a factory, an office,
The present invention relates to a floor heating device suitable for floors of general households and the like and a heating floor structure using the floor heating device.

[0002]

2. Description of the Related Art Conventionally, in factories, offices, general households and the like in cold regions, in addition to indoor heating for warming indoor air using a stove or the like, floor heating for warming the floor is often used together. In the past, as the above-mentioned floor heating, one that is adapted to supply a heated fluid directly to the space below the floor surface member to cause it to flow, such as ondol, has been adopted. However, in this floor heating, a device for heating the fluid is required, and since a considerably large amount of fluid has to be heated, the equipment becomes large-scale, and the upstream and downstream of the fluid are connected. There are inconveniences such as the efficiency of floor heating being significantly different.

In consideration of such a point, the floor heating in recent years is one in which a planar heating element by Joule heat, the upper and lower surfaces of which are both covered with a heat storage element, is housed in the space below the floor member. It is being adopted. Here, as the two heat storage bodies that cover the planar heating element, heat storage temperatures that are equal to each other are adopted. If this floor heating is adopted, it is not necessary to heat and flow the fluid, so that the overall configuration can be simplified and the size can be reduced. In addition, in the range where this floor heating is applied, almost the same heating effect can be obtained. Further, since heating or non-heating can be selected only by controlling energization to the planar heating element, control becomes simple. Furthermore, since the sheet heating element is covered with the heat storage element, the floor heating can be continued for a considerable period of time even after the power supply to the sheet heating element is stopped.

[0004]

When a floor heating apparatus is used in which the upper and lower surfaces of the planar heating element are both covered with a thermal storage element having the same thermal storage temperature, the planar heating element generates heat above and below it. Therefore, when the sheet heating element is energized, both heat storage elements accumulate heat at approximately the same rate, and after the sheet heating element is de-energized, Both heat storage bodies will release heat at approximately the same rate. Such a floor heating device can emit a certain amount of heat to the floor surface for a predetermined time. However, such an operation may cause inconvenience. That is, in a region where the temperature difference between the morning and the daytime is large, the feeling of heating in the morning is weak, while the feeling of overheating may be felt in the daytime. Therefore, a floor heating device suitable for such a region is a device that emits a large amount of heat at the start of heat radiation in the morning, and continues to emit a rather low amount of heat during the daytime when the temperature rises. The device has not been proposed yet.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to heat the floor surface member with a large amount of heat released at the beginning of floor heating, and to obtain a certain floor heating effect for a long time. It is an object of the present invention to provide a floor heating device that can be continued for a long time and a heating floor structure using the floor heating device.

[0006]

In order to achieve the above-mentioned object, the floor heating apparatus according to claim 1 covers both the upper part and the lower part of the sheet heating element with a heat storage element and also the sheet heating element of the sheet heating element. The heat storage temperature of the heat storage body covering the upper part is set higher than the heat storage temperature of the heat storage body covering the lower part of the planar heating element.

The heating floor structure according to claim 2 has a floor member supported by a plurality of joists, and the floor heating device according to claim 1 is arranged in a space between the joists below the floor member. It has been done.

[0008]

According to the floor heating apparatus of the present invention, both the upper part and the lower part of the planar heating element are covered with the thermal storage element, and the thermal storage temperature of the thermal storage element covering the upper part of the planar heating element is the planar heating value. Since the floor heating device, which is set higher than the heat storage temperature of the heat storage body covering the lower part of the body, is accommodated in the space below the floor surface member, it is released from the planar heat generating element when the planar heat generating element generates heat. Heat is stored by the upper and lower heat storage bodies. Of course, the heat storage body not only stores heat, but also releases heat to some extent, so that the floor surface member is heated during this time. When heat is dissipated, since the heat storage temperature of the heat storage body covering the side closer to the floor, that is, the upper portion of the planar heating element, is high, the heat flow in the initial stage of heat radiation is large, and the floor temperature is relatively rapidly increased to a high temperature level. can do. When the initial heat radiation of the upper heat storage body is completed, the heat flow of the upper heat storage body decreases due to the initial heat radiation and becomes the same level as the lower heat storage body, and thereafter, floor heating is performed in cooperation with the lower heat storage body having a low heat storage temperature. As a result, floor heating will continue at a relatively low temperature. Therefore, it is possible to provide a floor heating device that is warm in the morning and does not feel excessive heating when the temperature rises.

According to the heating floor structure of claim 2, the heating floor structure has a floor surface member supported by a plurality of joists, and
Since the floor heating device according to claim 1 is arranged in the space between the joists below the floor surface member, the heat flow resulting from the heat radiation from the upper heat storage body constituting the floor heating device according to claim 1 causes A relatively rapid heating can be achieved, and a certain heating effect can be continued for a long time even after a certain amount of time has passed since the power supply to the planar heating element was stopped. Therefore, it is possible to provide a floor heating structure that is warm in the morning and does not feel excessive heating when the temperature rises.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing embodiments. FIG. 1 is a partially cutaway perspective view showing an embodiment of a floor heating system of the present invention, in which heat storage bodies 2 and 3 are arranged on the upper and lower surfaces of a planar heating element 1. The sheet heating element 1 is a sheet heater made of rubber, plastic or the like in which conductive carbon or the like is dispersed and mixed to form a plate, a heater wire meanderingly wired on a heat insulating material, and a heat medium. It is possible to employ one that is provided with a circulation pipe, one that is also used as a heat storage material unit for the latter two, and the like. However, the heat storage body 2, 3
Considering that heat can be uniformly transferred to the entire surface of the sheet, it is most preferable to use the sheet heater.

Examples of the heat storage bodies 2 and 3 include a bag body made of a metal laminate film such as an aluminum-plastic film and a latent heat storage material enclosed therein. As the heat storage material, various materials can be used. For example, 100 parts by weight of paraffins and hydrocarbon-based organic polymer 5 as described in JP-A-4-85387 can be used. An example is a heat storage material obtained by mixing 30 parts by weight with a mechanical means. This exemplified heat storage material is preferable because it has shape retention even during a phase change and is excellent in handleability and the like, because the operability in obtaining the floor heating device becomes good. Also, in enclosing the heat storage material in the bag body made of the metal laminate film,
It is preferable to adopt the vacuum sealing method, and the damage resistance can be improved without impairing the heat transfer property.

Regarding the heat storage temperatures of the two heat storage bodies 2 and 3, the heat storage temperature of the heat storage body 3 arranged on the lower surface of the sheet heating element 1 is the heat storage body arranged on the upper surface of the sheet heating element 1. Two
Is set higher than the heat storage temperature. The temperature difference may be set to about 5 ° C, but may be larger than 5 ° C. FIG. 2 is a partially cutaway perspective view showing the structure of a heating floor in which the floor heating device having the above-mentioned configuration is incorporated, in which joists 5 are arranged at predetermined intervals on the upper surface of the base floor member 4 and the floor surface. A member 6 is supported by joists 5. The floor heating device having the configuration shown in FIG. 1 is arranged in the space formed by the base floor member 4, joists 5 and floor member 6.

[0013]

[Specific example] A base floor member 4 having a heat insulating material arranged on the upper surface is adopted, and the floor member 6 has a thickness of 12 mm.
Adopting a flooring floor, the size of both heat storage bodies 2 and 3 is 800 x 250 x 16 mm, and the heat capacity is 12
Adopting 2 kcal, a tape made of aluminum is placed between the heat storage bodies 2 arranged with the joists 5 in between,
The heat generation temperature of the sheet heating element 1 is 52 ° C., the heat storage temperature of the heat storage element 2 located above the sheet heating element 1 is 47 ° C., the heat storage temperature of the heat storage element 3 located below the sheet heating element 1. 40 ℃
Then, the outside air temperature is set to 7 ° C., initially the sheet heating element 1 is energized for 10 hours, and the sheet heating element 1 temperature and sheet heating for 24 hours after the sheet heating element 1 is energized. Temperature of the upper surface of the heat storage body 2 located above the body 1, floor member 6
The temperature of the upper surface of the room, the temperature of the room, the unit volume, and the change in the value of the heat flux showing the amount of heat released per unit time were measured.
It was as shown in.

As a comparative example, changes in the same items were measured under the same conditions as above except that the heat storage temperature of the heat storage body located under the sheet heating element was 47 ° C., and as shown in FIG. there were. 3 and 4, A is the temperature of the sheet heating element, B is the temperature of the upper surface of the heat storage element located above the sheet heating element, and C is the temperature of the upper surface of the floor member. D indicates the temperature inside the room, E indicates the value of the heat flux indicating the amount of heat released per unit volume and unit time, and F indicates the temperature of the outside air. The vertical axis indicates temperature (° C) and heat flux value (kcal / m
2 · h), and the horizontal axis indicates time.

Comparing the two figures, FIG. 3 shows a larger heat flux value than FIG. 4 during the energization of the sheet heating element and at the beginning of the stop of energization of the sheet heating element. Therefore, it can be seen that the floor surface member can be rapidly heated due to the large heat flux value. Then, it is shown that the rate of decrease in the value of the heat flux is smaller in FIG. 3 than in FIG. 4 after a lapse of a predetermined time after stopping the energization of the planar heating element. Specifically, the rate of decrease of the temperature of the upper surface of the heat storage element located above the planar heating element, the rate of decrease of the temperature of the upper surface of the floor member, and the rate of decrease of the room temperature are as shown in FIG. Is slightly larger, but after that it becomes smaller. That is, the rapid heating of the floor surface member is achieved by adopting the floor heating device of FIG. 1 (by adopting one having a high heat storage temperature as the heat storage body 2 located above the planar heating element 1). In addition, the floor heating effect can be maintained to some extent for a long time even after the power supply to the sheet heating element is stopped.

3 and 4, the temperatures of the respective parts at the start of energization are different from each other because, for example, the energization start times are different from each other. The present invention is not limited to the above-described embodiment, and for example, instead of directly arranging the heat storage body 3 located below the planar heating element 1 on the base floor member 4, the base floor member 4 is provided. It is possible to dispose a heat insulating body on the heat insulating body and to dispose the heat storage body 3 on the heat insulating body, and various design changes can be made without departing from the scope of the invention.

[0017]

As described above, according to the invention of claim 1, a relatively rapid heating can be achieved by increasing the value of the heat flux when the sheet heating element is energized and at the beginning of the deenergization. After the sheet heating element stops generating heat and a predetermined time has passed, heat radiation from the lower heat storage body and heat radiation from the upper heat storage body are made to cooperate with each other to maintain a certain heating effect for a long time. Can be warm in the morning,
It has the unique effect of being able to achieve floor heating without a feeling of overheating when the temperature rises.

The invention of claim 2 can achieve relatively rapid heating due to the large initial value of the heat flux from the upper heat accumulating body which constitutes the floor heating apparatus of claim 1. At the same time, after the planar heating element stops generating heat and a predetermined time has passed, it is possible to maintain a certain heating effect for a long time, and to achieve floor heating that is warm in the morning and does not feel overheating when the temperature rises. It has the unique effect of being able to.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a floor heating system of the present invention.

FIG. 2 is a partially cutaway perspective view showing a structure of a heating floor incorporating the floor heating device having the configuration of FIG.

FIG. 3 is a diagram showing a measurement result of a heating effect obtained by the floor heating device having the configuration of FIG.

FIG. 4 is a diagram showing a measurement result of a heating effect obtained by a floor heating device having a conventional configuration.

[Explanation of symbols]

 1 Sheet heating element 2, 3 Heat storage element 5 Joist 6 Floor member

Claims (2)

[Claims] 1. A floor heating device housed and arranged in a space below a floor surface member (6), wherein both the upper part and the lower part of a planar heating element (1) are covered with a heat storage element (2) (3). In addition, the heat storage temperature of the heat storage body (2) that covers the upper portion of the sheet heating element (1) is set higher than the heat storage temperature of the heat storage element (3) that covers the lower portion of the sheet heating element (1). A floor heating system characterized by the above. 2. A floor member (6) supported by a plurality of joists (5) and having a space between the joists (5) below the floor member (6). A heating floor structure characterized in that a floor heating device is arranged.