JPH09152140A - Floor heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the running cost with an excellent temperature rise property. SOLUTION: This heater comprises a flat plate shaped floor member 1 that forms a floor surface, a warm water circulation pipe 2 for heating the floor member 1 with warm water, floor temperature detection means 3 for detecting temperature of the floor member 1, a warm water boiler 4a for supplying warm water to the warm water circulation pipe 2 heating the warm water to predetermined temperature and controlling a flow rate following a detection output of the floor temperature detection means 3, and an electric heater 5a controlled in power supply with the detection output of the floor temperature detection means 3 and heating the floor member.

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 more particularly to a floor heating system having excellent rising characteristics of temperature rise and low running cost.

[0002]

2. Description of the Related Art By improving the airtightness and heat insulation of a house,
Underfloor heating is being reviewed as a means of obtaining a comfortable heating effect of head cold foot heat. Floor heating is originally one of the heating methods positioned as base heating in relatively cold regions. For example, hot water is heated by a hot water boiler that burns kerosene, and a hot water circulation pipe under the floor material is circulated. Devices have been used. This hot water type floor heating system radiates heat from the floor surface by continuously heating hot water all day long in winter.
It warms the entire room. On the other hand, as a floor heating system in a relatively warm area, there is an electric floor heating system in which electricity is supplied when heating is required and an electric heater embedded in a floor material warms the floor surface. This electric floor heating device is used together with heating such as an air conditioner as auxiliary heating, and is mainly for eliminating discomfort such as cold feet.

A hot water type floor heating device also circulates hot water of about 50 ° C. in a hot water circulation pipe to also heat a room, and generally operates continuously throughout the day and night. Therefore, the time required for the floor surface to reach a predetermined temperature does not matter so much, and the fuel used is kerosene, which is inexpensive.

Recently, attention has been paid to the low running cost, and hot water type floor heating systems are sometimes used in relatively warm regions. In this case, since the temperature does not drop significantly at night, the operation of the hot water boiler is often stopped. Therefore, in the next morning, the temperature of the hot water when the operation of the hot water boiler was restarted was low, and the temperature of the floor surface did not rise immediately. As a result, comfortable heating cannot be obtained at the beginning of operation restart.

[0005]

By the way, in a relatively warm rural house, since the airtightness and heat insulation of the house are lower than those in a cold region, in order to achieve energy saving while maintaining comfort, It is said that it is more effective not to perform heating operation except when necessary. In addition, compared to the above-mentioned hot water type floor heating system, the electric type floor heating system, which has excellent rising characteristics of temperature rise, has an electricity cost of nearly twice the fuel cost of an oil boiler when used continuously during the day. The running cost becomes high.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a floor heating apparatus having a first object of excellent temperature rising property and a second object of low running cost. Especially.

[0007]

In order to achieve the above object, the floor heating apparatus according to claim 1 is a flat floor material for forming a floor surface and a hot water circulation pipe for heating the floor material with hot water. A floor temperature detecting means for detecting the temperature of the floor material, hot water heating means for heating the hot water circulating pipe to a predetermined temperature by the detection output of the floor temperature detecting means and supplying the hot water at a controlled flow rate,
The electric power is controlled by the detection output of the floor temperature detecting means to electrically heat the floor material.
Thus, the floor surface can be heated and warmed by both the hot water circulation pipe and the electric heating means.

According to a second aspect of the present invention, there is provided a floor heating system in which the electric heating means according to the first aspect is formed by arranging linear electric heaters in a plane. As a result, the planar electric heating means is formed by the linear electric heater.

The floor heating apparatus according to a third aspect of the present invention is such that the electric heating means according to the first or second aspect is formed closer to the floor surface than the hot water circulation pipe. Thereby, the conduction heat to the underfloor side of the electric heating means is absorbed by the hot water flowing through the hot water circulation pipe.

Further, in the floor heating apparatus according to a fourth aspect, the floor temperature detecting means according to the first to third aspects outputs to both the hot water heating means and the electric heating means. Thereby, the hot water heating means and the electric heating means are controlled by one bed temperature detecting means.

Further, in the floor heating apparatus according to a fifth aspect of the present invention, the electric heating means according to the first to fourth aspects supplies power when the temperature detected by the floor temperature detecting means is equal to or lower than a predetermined temperature. As a result, the floor surface is heated by the electric heating means only when the floor surface temperature is low.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. This floor heating system, floor material 1
The hot water circulation pipe 2, the floor temperature detecting means 3, the hot water heating means 4, and the electric heating means 5 are main constituent members. In addition, as shown in FIG. 2 (a), the floor heating apparatus of the present embodiment is for plywood base construction method in which a discarding plywood is attached on a joist which is a framework of the floor structure, and a heating means is installed thereon. However, as shown in (b), the same effect can be obtained even for the joisting method in which heating means is installed between joists.

As shown in the exploded perspective view of the back surface of FIG. 3, the flooring 1 is made of laminated wood, for example, laminated lumber, laminated with a thin plate for aesthetic purposes, and coated with urethane to prevent cracks from being generated by heat. The surface portion 1a having been formed,
An electric heater arranging recess 1b for arranging an electric heater 5a, which will be described later, having a depth approximately half the thickness of the flooring 1 and approximately the center of the rear surface side, and a wiring for connecting the electric heater wiring. And an electric heater wiring groove portion 1c. This floor material 1 is installed on the upper surface of a heat equalizing plate 2a having a hot water circulation pipe 2 described later with the surface portion 1a as the upper surface (floor surface).

The outer shape of the hot water circulation pipe 2 is approximately 11 mm.
A polyethylene pipe having an inner diameter of about 8 mm is connected to the hot water boiler via a header pipe having a flow rate control valve (not shown) at the start end and the end. This hot water circulation pipe 2
The soaking plate 2a is installed along the guide groove of the soaking plate 2a.
The floor material 1 is installed on the upper surface of a. The soaking plate 2a is
The foamed resin material is provided with an aluminum foil having a thickness of about 0.2 mm for evenly transmitting heat of warm water to the floor material 1 on the surface of the floor surface, and meanders for laying the warm water circulation pipe 2. It is formed to have a groove and a predetermined width and length that can be divided and placed on the floor. The heat equalizing plate 2a is installed on the discarding and laminating plate 7 attached on the joist 6. A heat insulating material 8 made of glass wool material or the like for preventing heat from hot water from escaping to the underside of the floor is installed under the waste laminating plate 7.

The floor temperature detecting means 3 is, for example, a thermistor element, and is installed in the recess 1b for arranging the electric heater on the back surface of the floor material 1 along with an electric heater 5a which will be described later, and detects the temperature of the floor material and converts it into an electric signal. Output. This floor temperature detecting means 3
The detection output of is input to both the power supply control section 5b of the electric heating means 5 and the hot water heating control section 4b of the hot water heating means 4 described later. Based on the detection output of the temperature of the floor material by the floor temperature detecting means 3, the hot water heating means 4 and the electric heating means 5 described later control and heat the floor material 1. The floor temperature detecting means 3 may be a semiconductor temperature sensor element other than the thermistor element.

The hot water heating means 4 includes a hot water circulation pump for circulating the heated hot water to the hot water circulation pipe 2 described above, and heats the hot water to circulate the hot water boiler 4a and the operation of the hot water boiler 4a. Hot water heating control unit 4 to control
b, and is comprised. The hot water boiler 4a is, for example, an oil hot water boiler, and a kerosene tank 4c installed separately.
In addition, the hot water heating controller 4b is generally installed outdoors.
The kerosene is burned to heat hot water. The hot water circulation pump provided in the hot water boiler 4a is disposed on the terminal side of the hot water circulation pipe 2 and pressurizes and circulates the hot water circulating through the hot water circulation pipe 2 toward the hot water boiler 4a. The hot water heating control unit 4b inputs the detection output of the floor temperature detecting means 3 and controls the combustion of the hot water boiler and the operation of the hot water circulation pump according to the value of the floor temperature, and the flow rate of the hot water in the hot water circulation pipe 2. Is controlled to heat the floor material 1.

The electric heating means 5 comprises, for example, a linear electric heater 5a having an outer cover made of a polyethylene material having heat resistance for a heating wire made of a nichrome wire material, which is arranged in a plane. A power supply control unit 5b for controlling the power supply is separately provided. Specifically, the electric heater 5a is
The floor heater 1 is provided in a recess 1b formed on the back surface of the floor member 1 and is arranged in a meandering or the like in a flat shape so as to be arranged in a plane. Is filled and fixed. The power supply control unit 5b is configured to have an opening / closing function of a relay or the like, inputs the detection output of the floor temperature detecting means 3 described above, and controls the relay or the like according to the value of the temperature of the floor material 1 to control the electric heater 5a. Control the power supply to.
The electric heater 5a of this one is controlled by the power supply controller 5b.
When the temperature detected by the floor temperature detecting means 3 is below a predetermined temperature, power is supplied to heat the floor material 1.

Next, the operation of the floor heating system having the above structure will be described with reference to FIG. FIG. 4 is a graph showing the relationship between the elapsed time after the start of operation and the temperature of each part in this floor heating apparatus, the horizontal axis represents the elapsed time, and the vertical axis represents the temperature. In the figure, A is the floor surface temperature, B is the temperature of hot water, and C is
Represents a change in temperature around the floor temperature detecting means 3. At the start of the operation, the detected value of the floor surface temperature by the detection output of the floor temperature detecting means 3 is equal to or lower than a predetermined temperature (for example, 30 ° C.), and in this case, the power supply control section 5b of the electric heating means 5 supplies the electric heater 5a. Is supplied to heat the floor material 1. Simultaneously with the start of operation, the hot water boiler 4a is controlled by the hot water heating controller 4b of the hot water heating means 4 to start heating the hot water. Then, the heated hot water is circulated through the hot water circulation pipe 2 by the hot water circulation pump provided in the hot water boiler 4a to start heating the flooring 1 together with the electric heater 5a. At the time T1 when the time has elapsed and the temperature detected by the floor temperature detecting means 3 is equal to or higher than a predetermined temperature,
Power supply to the electric heater 5a is stopped by the power supply controller 5b, and the floor material 1 is heated only by the hot water heating means 4. After that, the floor material 1 is heated only by the hot water heating means 4 until the time of T2, and after T2, the electric power is again supplied to the electric heating means 5 until T3. Then, after T3, the floor material 1 is heated only by the hot water heating means 4.

In the floor heating apparatus having the above-mentioned structure, the floor surface can be heated and warmed by the electric water heater 5a together with the hot water heating means 4 at the start of operation when the floor temperature is low. Therefore, the rise of the temperature rise becomes faster than that in the case where only the hot water heating means 4 is heated by the temperature change of B, and the time T4 until reaching the predetermined floor temperature is shortened to T1 to provide comfortable heating at an early point. The effect will be obtained. And when used continuously during the day,
Only the inexpensive hot water heating means 4 for heating the fuel is heated, and the running cost can be kept low. Further, the electric heating means 5 can be easily formed on the flooring 1 by forming the linear electric heaters 5a by arranging the electric heaters 5a in a plane, and the electric heating means 5 can be formed at a low cost. It can be added. Further, since the electric heating means 5 is disposed on the upper surface of the hot water circulation pipe 2, that is, on the side closer to the floor surface, the heat is dissipated to the underfloor side of the electric heating means 5 through the hot water circulation pipe 2. The heat loss of the electric heating means 5 is reduced. Further, since both the hot water heating means 4 and the electric heating means 5 are controlled by the one floor temperature detecting means 3, adjustment of control conditions due to the difference in the detected value of the floor temperature is not necessary, and the control program is easy. Further, the cost required for the floor temperature detecting means 3 can be reduced by half. Further, since the electric heating means 5 is designed to heat only when the temperature is below the predetermined bed temperature, it is heated only by the hot water heating means 4 for a long operating time after the temperature becomes above the predetermined bed temperature. As a result, the increase in running cost of operation is suppressed slightly, and the temperature rising property becomes excellent.

In the description of the embodiments, the electric heating means 5 has been described as being formed by arranging the linear electric heaters 5a in a planar shape, but the present invention is not limited to this and, for example, An electric heater having a planar shape may be used. Further, the installation position is not limited to the side close to the floor surface. Further, the condition of the power supply is not limited to the temperature below the predetermined detected temperature.
Further, the floor temperature detecting means 3 for controlling the hot water heating means 4 and the electric heating means 5 is not limited to one, but may be provided separately.

[0021]

According to the floor heating apparatus of the first aspect of the present invention, since the floor surface can be heated and warmed by both the hot water circulation pipe and the electric heating means, it is comfortable at an early point in time when the operation is started. The floor heating effect is obtained and the temperature rising property is excellent.

In addition to the effects of the first aspect of the present invention, the floor heating apparatus according to the second aspect includes the electric heating means having a flat surface formed by a linear electric heater. Heating means can be added.

According to the floor heating device of the third aspect, in addition to the effect of the first or second aspect, the conduction heat to the underfloor side of the electric heating means is absorbed by the hot water flowing through the hot water circulation pipe, so The heat loss of the static heating means is reduced.

According to the floor heating apparatus of the fourth aspect, in addition to the effects of the first to third aspects, one floor temperature detecting means controls the hot water heating means and the electric heating means.
The cost required for the floor temperature detecting means can be reduced by half.

In addition to the effects of the first to fourth aspects, the floor heating apparatus according to the fifth aspect heats the floor surface by the electric heating means only when the floor surface temperature is low. The rise can be suppressed slightly.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a floor structure of (a) a plywood base construction method, which is a main part thereof. In addition, as a reference, (b) a sectional view of the floor structure of the joist construction method is also shown.

FIG. 3 is an exploded perspective view of a back surface of a flooring material, which is a main part thereof.

FIG. 4 is a graph illustrating the relationship between the elapsed time after the start of operation and the temperature change of each part.

[Explanation of symbols]

 1 Floor Material 2 Hot Water Circulation Pipe 3 Bed Temperature Detection Means 4a Oil Boiler (Hot Water Heating Means) 5a Electric Heater (Electric Heating Means)

Claims (5)

[Claims] 1. A flat plate-shaped floor material forming a floor surface, a hot water circulation pipe for heating the floor material with hot water, a floor temperature detection means for detecting the temperature of the floor material, and a detection output of the floor temperature detection means. The hot water circulation pipe to heat the hot water to a predetermined temperature and control the flow rate to supply the hot water, and the electric power is controlled by the detection output of the floor temperature detecting means to electrically heat the floor material. A floor heating system characterized by the above. 2. The floor heating apparatus according to claim 1, wherein the electric heating means is formed by arranging a linear electric heater in a plane. 3. The floor heating apparatus according to claim 1, wherein the electric heating means is formed closer to the floor surface than the hot water circulation pipe. 4. The floor heating apparatus according to claim 1, wherein the floor temperature detecting means outputs to both the hot water heating means and the electric heating means. 5. The floor heating apparatus according to claim 1, wherein the electric heating means is supplied with power when the temperature detected by the floor temperature detecting means is equal to or lower than a predetermined temperature.