JPH0566024A - Heat storage type floor heating apparatus - Google Patents

Abstract

PURPOSE:To provide a more economical heat storage type floor heating apparatus by rationally setting heating time of a heat storage material by an electric heater. CONSTITUTION:A heat storage material 2 is disposed below a heating material 1 and an electric heater 3 is disposed for heating the heat storage material 2. The electric heater 3 is connected with a power supply 6 through switch means 5. The switch means 5 serves to shut off an electric circuit between the power supply 6 and the electric heater 3 as it receives a signal informing it of temperature measuring means 4, which measures surface temperature of the floor material 1, reading temperature higher than predetermined one (e.g. 26 deg.C or higher).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type floor heating device for heating a floor material with a heat storage material to heat a room.

[0002]

BACKGROUND OF THE INVENTION A heat storage type floor heating system in which a heat storage material and an electric heater are arranged under a floor material does not require installation of special equipment for heating as compared with other heating systems and is inexpensive. Since midnight power is used to store heat, there are advantages such as low running costs.

By the way, in the present situation, the electric heater is energized to store heat for 8 hours at night as the heat storage time for the heat storage material, but on a day when the temperature is relatively high, the floor material is sufficiently heated to be substantially heated. There was a case where electricity was continuously supplied to the electric heater and the heat storage material was continuously heated even though the heat storage was not required. In this case, the room temperature rises more than necessary, and the residents feel uncomfortable with the overheated state. That is,
The heating time of the heat storage material with the electric heater, which is really necessary, fluctuates day by day due to the influence of the outside temperature, etc., but so far no effective means for controlling the operating time of the electric heater has been proposed, and it is cheap at midnight. There was a problem that it wasted power even though it was power.

[0004]

DISCLOSURE OF THE INVENTION In order to overcome the problems of the above-mentioned heat storage type floor heating system, the present invention makes it possible to rationally heat the heat storage material by an electric heater, thereby making the heat storage more economical. An object of the present invention is to provide a floor heating system.

[0005]

A heat storage type floor heating apparatus of the present invention is a heat storage type floor heating apparatus in which a heat storage material and an electric heater for heating the heat storage material are arranged under a floor material. It is characterized in that a temperature measuring means for measuring a surface temperature and a switch means for stopping energization of the electric heater when the temperature measuring means detects a temperature equal to or higher than a certain value are provided.

[0006]

DISCLOSURE OF THE INVENTION That is, according to the present invention, whether or not heating of a heat storage material by an electric heater, which is really necessary, is completed,
It is characterized in that it is determined by the surface temperature of the floor material. Thus, when the surface temperature of the floor material reaches a constant value (set to a temperature at which heat storage is completed), switch means for stopping the power supply to the electric heater is provided, and the heat storage floor is extremely economical. It is intended to operate the heating system.

According to the device of the present invention having the function of changing the operation control of the heat storage type floor heating device to the so-called floor temperature control as described above, the energization of the heater is stopped when the room temperature exceeds a certain value. It is possible to perform the most direct temperature control as compared with the case where the room temperature control is performed or the heater temperature itself is controlled, and it is possible to efficiently prevent overheating of the heat storage material. This also realizes comfortable heating in which the room temperature is not overheated without overheating the heat storage material more than necessary on a day when the outside temperature is relatively high.

FIG. 1 is a sectional view showing the outline of the device of the present invention. A heat storage material 2 is arranged below the floor material 1, and an electric heater 3 for heating the heat storage material 2 is further installed.
The electric heater 3 is connected to the power source 6 via the switch means 5, and the switch means 5 receives a signal that the temperature measuring means 4 for measuring the surface temperature of the floor material 1 has measured a temperature above a certain value. At this time, the operation of disconnecting the electric circuit between the power source 6 and the electric heater 3 is performed.

The surface temperature of the floor material 1 for operating the switch means 5 is in the range of 23 to 28 ° C, preferably 24 to 27 ° C. If floor heating is continued at such floor material surface temperature,
The present inventors have empirically found that the room temperature can be kept at a comfortable temperature (18 to 22 ° C.), and the time when the floor material surface temperature reaches the above temperature range is when the heating of the heat storage material by the electric heater is stopped. By doing so, the operation can be performed most efficiently.

As the heat storage material 2 used in the present invention, various conventionally known heat storage materials can be used. However, considering the general building structure with floor material thickness of about 10 mm,
The heat storage temperature of the heat storage material capable of keeping the floor material surface temperature at about 23 to 28 ° C all day is 33 to 45 ° C, preferably 35 to 43 ° C.
Was found to be suitable.

As such a heat storage material, paraffins as heat storage components and a binder component consisting of 5 to 30% by weight of hydrocarbon-based organic polymer per 100% by weight of the paraffins are mixed by mechanical means. The ones that have been done are listed. Specific examples of preferable paraffins include various paraffins, waxes, waxes, fatty acids having 10 or more carbon atoms, higher alcohols, polyethylene glycol and the like, and one of these may be used alone or two of them may be used. Used as a mixture of the above. Here, the paraffins as one kind or a mixture of two or more kinds are JIS
Tmax measured according to K 7121 (Plastic transition temperature measuring method) is 33 to 45 ° C., preferably 35 to 4
Those in the temperature range of 3 ° C. are used. Examples of the hydrocarbon-based organic polymer as the binder component include one or a mixture of two or more of polyolefin-based polymers, thermoplastic elastomers, and hydrocarbon-based rubbers, and the organic polymer is crosslinkable. It may be non-crosslinkable, and those having rubber-like properties are preferable to those having plasticity. When the content of the binder component is less than 5% by weight with respect to the paraffins, the composition tends to be less flexible and brittle, and when it exceeds 30% by weight, the heat storage amount tends to decrease, so that the above content is preferred. Is.

In the case of using one type of the parine as the heat storage component, paraffin, fatty acid, higher alcohol, polyethylene glycol, etc. having Tmax in the above temperature range can be exemplified. When used in a mixture of two or more kinds, for example, the paraffin wax contains 10 to 70% by weight of a fatty acid having 10 or more carbon atoms and / or a higher alcohol, and moreover, the paraffin wax, the fatty acid and / or the higher alcohol as a whole. On the other hand, a paraffin type heat storage component composition as a mixture containing 5 to 50% by weight of an alkyl-substituted fatty acid ester having 10 or more carbon atoms can be exemplified.

In the mixture heat storage component composition exemplified above, the melting temperature Tmax of paraffin wax is 3
Those having a temperature of 0 to 55 ° C., particularly those having a temperature of 40 to 50 ° C. are preferable, and examples thereof include 115 ° F. paraffin, No. 1 soft paraffin, 125 ° F. paraffin and the like, and mixtures of two or more thereof. Examples of fatty acids having 10 or more carbon atoms include capric acid, lauric acid, myristic acid, palmitic acid, stearic acid and the like, and mixtures of two or more thereof. Further higher alcohols include capryl alcohol, lauryl alcohol, mistyl alcohol,
Examples include palmityl alcohol, stearyl alcohol and the like, and mixtures of two or more of these. As an alkyl-substituted fatty acid ester, a low temperature melting temperature Tmax of 20 to 35 ° C.
Can be used, for example, methyl palmitate,
Examples include methyl stearate, butyl stearate and the like, and mixtures of two or more thereof.

In the case of the above heat storage material composition, while using a paraffin wax having a melting temperature Tmax of about 50 ° C., a relatively high melting temperature T of about 30 to 60 ° C.
By blending a fatty acid and / or a higher alcohol having max and a fatty acid ester having the above-mentioned low temperature melting temperature Tmax, melting of the fatty acid ester itself from a temperature slightly lower than the melting temperature Tmax of 50 ° C. of paraffin wax. A composition showing a broad melting peak over the temperature Tmax can be obtained, and therefore a heat storage material having a heat storage material temperature of 33 to 45 ° C, particularly 35 to 43 ° C can be obtained. Since the heat storage material has an advantage of holding a solid state during heat storage, it is advantageous in that there is no risk of liquid leakage when applied to the heat storage type floor heating device of the present invention.

Various kinds of electric heaters can be used as the electric heater 3 used in the present invention. For example, a heating wire having a meandering wiring, or a sheet-like heating element having a feeding electrode attached to a conductive rubber or the like. Is mentioned. The electric heater 3 is the heat storage material 2
In order to heat the heat storage material, it is installed in direct contact with the heat storage material or, if necessary, in close contact with the packaging body or the hermetically sealed container which covers the heat storage material.

As the temperature measuring means 4, a resistance thermometer using platinum, nickel or the like as a resistance temperature detector, or a thermoelectric thermometer composed of copper-constantan wire or iron-constantan wire can be used. Further, as the switch means 5,
For example, it is possible to use a device including a discrimination circuit that determines whether or not the temperature information signal from the temperature measurement means 4 is a certain value or more, and an electromagnetic contact that operates according to a command from the discrimination circuit.

In the apparatus of the present invention, it is desirable to add means for controlling the heat generation temperature of the electric heater 3. In the severe cold season, the floor material surface temperature does not rise to an appropriate temperature and the floor temperature control may become difficult. On the other hand, it is uneconomical to continuously heat the heat storage material at a high temperature without the need to continuously energize the electric heater. Generally, the heat storage material is
Sufficient heat storage can be performed by heating at a temperature slightly higher than the heat storage temperature. Therefore, when using the heat storage material having a heat storage temperature of 33 to 45 ° C., the upper limit heat generation temperature of the electric heater is set to 6
It may be set to about 0 ° C. As a method of controlling the heat generation temperature of the electric heater, a means such as attaching a thermostat or the like can be exemplified. By providing the heat generation temperature control means of the electric heater in this manner, it becomes possible to more economically operate the floor heating device even in the severe cold season.

[0018]

EXAMPLES To specifically carry out the apparatus of the present invention, a heat storage floor heating system was constructed under the following conditions. A heating wire is arranged in a meandering shape between the horizontal bars (joists) that are laid on the underfloor concrete plate, and this is covered with a soaking sheet, and the cover is covered on it. Length 780 mm, width 240 mm, thickness 10 mm
Multiple heater units were laid. The heat generation capacity of this heater unit was 67 W / sheet.

On the heater unit, 100 parts by weight of a paraffins heat storage component containing 45 parts by weight of 115 ° F paraffin, 45 parts by weight of myristic acid, and 10 parts by weight of methyl palmitate, and a thermoplastic elastomer (trade name as a binder component) (Clayton G1650, manufactured by Ciel Chemical Co., Ltd.) 15 parts by weight, polyethylene wax 5 parts by weight, and a heat storage material made of a composition obtained by melt-kneading and mixing a composition of 0.2 parts by weight, a length of 780 mm and a width 240
mm, and a plate having a thickness of 20 mm was processed, and a heat storage unit in which the plate was covered with an aluminum laminate protective sheet having a thickness of 0.3 mm was placed according to each heater unit. Incidentally, since the heat storage material has the above composition, unlike the conventional general heat storage material, it does not become liquid even at a high temperature, and has a characteristic that it exhibits a rubber shape and stores heat. The heat storage temperature of the heat storage material was 40 ° C., and the heat storage amount was 40 Kcal / Kg (not including sensible heat).

The heat storage unit and the heater unit were arranged on the entire space between the joists, and a wooden floor material having a thickness of 12 mm was laid on the joists. A space of about 10 mm was provided between the floor material and the heat storage unit. 2mm thick on the floor
A floor surface material made of a PVC sheet was laid.

A thermoelectric thermometer was installed directly above the PVC sheet for floor material, and a switch circuit was constructed so that the circuit between the heater unit and the power supply was cut off when the floor surface temperature reached 26 ° C. A timer device was installed between the heater unit and the power source so that power can be supplied only to the inexpensive midnight power band (11:00 pm to 7:00 am).

In order to confirm the operating state of the heat storage type floor heating system thus constructed, a thermoelectric thermometer is attached between the heater unit and the heat storage unit, on the surface of the heat storage unit and on the floor surface, and the floor heating system of the present embodiment is installed. The temperature of each place during continuous operation was measured every 15 minutes. Also the room temperature (from the floor 70
A thermometer was installed at the position of cm) and the outside air temperature was also measured every 15 minutes. The result is shown in FIG.

As is clear from FIG. 2, when the surface temperature of the floor material reaches 26 ° C., the surface temperature of the heater unit drops sharply. This means that the floor temperature control is activated and the power supply to the heater unit is stopped. It is shown that. Heater off
Although the time to be changed varies depending on the outside air temperature and the like, the heater is turned off for about 2 to 3 hours on average, and the amount of electric power could be saved by this amount. According to the floor heating by the apparatus of the present embodiment which is controlled as described above, the room temperature is maintained at a temperature range of about 18 to 22 ° C., which is a temperature range that most people feel comfortable, and extremely good floor heating is performed. Was confirmed.

[0024]

[Effect] With the heat storage type floor heating apparatus of the present invention as described above, since the floor temperature control method of stopping the power supply to the electric heater when the surface temperature of the floor material exceeds a certain value is adopted, When it is not necessary to heat the heat storage material with the electric heater, the power supply to the electric heater can be stopped.
The heat storage material can be heated by an efficient electric heater according to the floor material surface temperature. Therefore, it is possible to provide a very economical heat storage type floor heating system without extra power consumption.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a heat storage type floor heating device of the present invention.

FIG. 2 is a chart showing temperature distributions at various places when the device of the present invention is operated.

[Explanation of symbols]

 1 floor material 2 heat storage material 3 electric heater 4 temperature measuring means 5 switch means 6 power supply

Claims (3)

[Claims] 1. A heat storage type floor heating device comprising a heat storage material and an electric heater for heating the heat storage material arranged below the floor material, and a temperature measuring means for measuring a surface temperature of the floor material, and the temperature measuring means. And a switch means for stopping energization of the electric heater when a temperature above a certain value is detected. 2. The switch means is operated to stop energization of the electric heater when the surface temperature of the floor material measured by the temperature measuring means is 23 to 28 ° C. The heat storage type floor heating device according to 1. 3. The heat storage material has a heat storage temperature of 33 to 4
The heat storage type floor heating device according to claim 1, wherein a heat storage material of 5 ° C is used.