JPS60240935A - Planar heater - Google Patents

Abstract

PURPOSE:To reduce consumption of electric energy as low as possible, by melting a heat accumulation material, which is arranged flat and having the melting point at around a heating temperature, by a heating device. CONSTITUTION:A heater 1 is laminated with a cushion layer 3 made of a heat insulation material, a flat heat accumulation layer 40 and a carpet layer 5 made of phelt in this order extending from the bottom to the top. As for a space between the heat accumulation layer 40 and the heat insulation cushion layer 3, a heating wire 6 as a heating device for heating the heat accumulation layer 40 is laid zigzag under the surface of the heater 1 extending over the whole surface of the heater 1. The heat accumulation layer 40 consists of a heat accumulation material 4 and a cover body 8 sealing the heat accumulation material 4. The heat accumulation material 4 is substance capable of utilizing latent heat and, moreover, consists of the substance having the melting point in the vicinity of a heating temperature. With this construction, simultaneously with heating of the heat accumulation material warming can be performed, and at the time of weakening of electric power after heating, warming can be performed through latent heat of the heat accumulated material.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a heating device for a surface such as a floor heating carpet.

BACKGROUND ART In a typical prior art, heating wires are placed inside a flat sheet-like body and the heating wires are energized to provide floor heating. With the prior art technology, floor heating could only be performed during the period when the heating wires were energized, resulting in excessive electrical energy consumption and high running costs.

Object The object of the invention is to provide an overall surface heating device which consumes as little energy as possible.

Embodiment FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the section line ``---'' in FIG. This heating device, for example, has a rectangular planar shape and is laid on the floor 2 of a room.

In this heating device II''i, a cushion layer 3 made of a heat insulating material, a flat heat storage layer 40, and a carpet layer 5 made of felt or the like are laminated in this order from the bottom surface to the top surface.The heat storage layer 40 and the heat insulating cushion layer 3, heating wires 6 as a heating means for heating the 40 heat storage layers are buried in a zigzag pattern over the entire surface of the heating device 1.Near the heating wires 6. A temperature detecting means 7 is provided.In FIG. 1, six heating wires are shown as solid lines for ease of illustration.

The heat storage layer 40 consists of a heat storage material 4 and a cover 8 that completely seals the heat storage material 4. The heat storage material 4 is made of a substance that can utilize latent heat and has a melting point near the heating temperature. As a heat storage substance, for example, CaCl.6H is used as an inorganic material.
2αCaCO3'10H2O, NaHF20<-12H2O-NazSO4'10H2O, etc.

In addition, examples of organic materials include paraffin and polyethylene glycol. These materials have a long temperature duration near their melting point and can store a large amount of heat in proportion to their volume, so they are suitable as the heat storage material 4 used in the present invention. Such a heat storage material 4-piece nylon polyethylene,
It is sealed in a cover unit 8 made of a plastic film such as polyester. Therefore, when the heat storage material 4 changes from a solid layer to a liquid layer, leakage of @S is also prevented.

1・”pa → “′””) - th (7) + ri (7 not 91”
001 may be impregnated with a heat storage material. In this way, the feeling of walking on the top surface of the floor heating device l can be made good, and when the heat storage material 4 is in a liquid state, This prevents the image from being concentrated in one place.

Six heating wires are connected to the daytime AC power supply M1 and the nighttime AC power supply M2 through day/night changeover switches SW] and '(r. The given AC power supply Ml.

A switch SW2 is provided to conduct/cut off the power from M2.

Figure 3 shows the heating of heating device 1! IIf'F:'i is a block diagram showing a control mechanism for controlling. The output of the temperature detection means 7 is given to the processing circuit 10, and the ON/OFF operation of the switch SW2 is controlled by the processing circuit 10. Further, the processing circuit 10 receives no output from the clock means 1.

This changes the switching mode of the switch SWl, and switches between the AC power source M1 and the AC power source M2. To be more specific, during a predetermined time period W (see FIGS. 4 and 8), for example between 10 p.m. and 7 p.m., the common contact of the switch SWI is ml*m2 fixed contacts p2, p4.
The power from the AC power source M2 energizes the heating wire 6. Further, during the remaining time outside the time period W, the common contact m11m2 of the switch SW contacts the fixed contacts pl and p3, and the heating wire 6 is energized by the AC power supply M1.

Figure @4 is a graph showing the conduction cutoff state of the switches SWI and SW2 and the temperature rise state related to this force. Third
Referring also to the figure, when the time announced by the clock means 11 reaches a predetermined time t, for example, 22:00, the switch SWI is switched to the side of the night AC power supply M2 as shown in Fig. 4 (1). Power is switched to . This predetermined time t1
At the previous time to, the switch 5W2ij Fig. 4 (
As shown in 2), C is in the ON state and continues to be in the ON state even after 1 time tl. The temperature detected by the temperature detection means 7 in this state is shown in FIG.
), the upper limit discrimination level l! at time t2!
When the value reaches 1, the switch SW2 is turned off as shown in FIG. 4 (2). Therefore, as shown in Figure 4 (3), the temperature continues to drop, and when the temperature detecting means 7 detects that the lower limit discrimination level /21 has been reached, 5 falls as shown in Figure 4 (2). The switch SW2 is then turned ON again. As a result, the temperature Vi of the heating wire 6
As shown in Figure 4 (3), it rises again. In this way, this series of operations is repeated until time t4, when the night power supply M2 is switched to the commercial AC power supply M]. In this way, from time t1 to time t4.

The temperature Ofc of the heat storage material 4 is controlled to be approximately maintained at a predetermined temperature of 1, for example, 40° C. or higher. In this manner, during the time period W, a large amount of heat is received from the four heat storage materials and the heating wires 6, and the heat is stored by changing the phase from solid to liquid. Heat storage material 4
For example, CaCl2.6HO has a latent heat of 43Kcal.
/) (g, and paraffin is 50Kcal/K
g, and therefore a large amount of heat will be stored in a small volume with a small temperature increase.

When the time set by the clock means 11 reaches a preset time t4, for example 7 o'clock, the switch SWI is switched to the daytime commercial AC power source M1 as shown in FIG. 111. At this time, since the temperature detected by the temperature detection means 7 is higher than the melting point KO,
The switch SW2 is in the OFF state as shown in FIG. 4 (2). Thereafter, the switch SW2 continues to maintain the OFF state until the time t5 when the phase change of the heat storage material 4 from the liquid phase to the solid phase is completed. The time from time t4 to time t51 is generally about 7 to 8 hours. In this way, from time t4 to time t5, the amount of heat stored in the heat storage material during the night is gradually radiated, and therefore there is no need to use commercial AC power for daytime use, Instead of using expensive electric power, low-cost late-night electric power is used to heat the room, making it possible to reduce costs. Furthermore, since the temperature of the heat storage material 4 is raised relatively slowly, it is possible to maintain a comfortable heating temperature for a long time.

After the heat storage material 4 changes from a liquid to a solid, a power source M is used as an auxiliary power source. That is, after time t5, switch S
W2 is turned ON again, and the heating wire 6 is again energized by the power from the AC power source M1. The temperature rises again due to kneading and reaches the upper limit discrimination level 1 at time t6.
When 3I is reached, the switch SW2 is turned off. Therefore, when the temperature decreases and reaches the lower limit discrimination level 14 at time t7, switch SW2 is turned ON.
state. After time t7, this series of operations is repeated until the heating temperature reaches the discrimination level e1.
Temperatures near the melting point KO between 12 and 2 are maintained approximately. In this way, at 6C after time t5, the heat storage material 5 does not warm up much, and most of the heat is used for current heating. Even if the temperature drops too much, the latent heat of the heat storage material 4 will be fully utilized, and the heating temperature will not drop below the melting point KO.

Therefore, occurrence of a situation in which a pedestrian or the like is injured by burns can be prevented.

FIG. 5 is a plan view of another embodiment of the invention.

FIG. 6 is a sectional view taken along the section line M-v in FIG. 5. This embodiment is similar to the previous embodiment and corresponding parts are provided with the same reference numerals. 20 notable heating devices
Here, the heating wire 21 connected to the daytime commercial AC power supply M]
and a late-night heating wire 22 connected to the night-time alternating current power supply M2. In addition, in FIG. 5, for ease of illustration, 22 heating wires are shown as solid lines and 22 heating wires are shown as broken lines. This heating wire 21 is connected to a heat storage layer 40 .

It is buried between the carpet layer 5 and the heating wire 2.
Embedded between the two heat storage layers 40 and the heat insulating cushion layer 3 -
I'm Jfl. The heating wire 21 is equipped with a temperature detection means 23, and the other heating wire 22 is equipped with a temperature detection means 24.

The heating wire 21171' is connected to the daytime commercial AC power source M1 via the switch 5W3F, and the heating wire 22 is connected to the nighttime AC power source M2 via the switch SW4' (i?).

Is diagram 1g7 the control mechanism that controls the heating operation of the heating device 20? FIG. The outputs from the temperature detection means 23, 24 and the clock means 11 are applied to the processing circuit 10, the processing circuit 106 (and thus the switches SW3 and SW4).
ON/OFF operation is controlled.

FIG. 8 shows switch SW3. It is a graph showing the conduction cutoff state of SW4 and the temperature rise state related to f'LI. The heating operation of the heating device 20 will be explained with reference to FIG. 7 as well. When the clock means Ill thus reaches the predetermined time 11, the switch SW is activated as shown in FIG. 8(1).
4 is in the ON state, and the switch 5 is turned on (Figure 8).
As shown in 21, it becomes an OFF state. Therefore, heating wire 2
2 is energized by the power from the AC power source M2 for night use, and its temperature rises as shown in FIG. 8(3). Temperature force ≦ discrimination level I at time 12 twilight! When the value reaches 1, the switch SW4 is turned off as shown in FIG. 8(1). Therefore, the temperature decreases as shown in FIG. 8 (3), and when it reaches the lower limit discrimination level 12 at time t3, the switch SW4 is turned on again, the heating wire 22 is energized again, and the temperature is lowered. going up. In this way, the time t added in advance after time t3
4. For example, such an operation is repeated until 7 o'clock, and the temperature is maintained at approximately 1, which is higher than the melting point KO of the heat storage material 4. After straining like this, time t1
In the time period W from 1 to t4, a large amount of heat from the electric heat W, 122 is stored in the heat storage material 4.

At time t41, the table 8 is swung as shown in Figure (1). During the period from time t4 to time t5, floor heating is performed by gradually dissipating the amount of heat stored in the heat storage material 4. As shown in FIG. 8 (2), time t
5, the switch SW3 is turned on, and the heating wire 2
1 or energized by power from AC power source M1. As a result of this step, the temperature rises again as shown in FIG. 8 (3) and reaches the upper limit discrimination level l! at time t6. 3, the switch SW is activated as shown in FIG. 8 (2):
ljF[J' goes into the OFF state, and power to the heating wire 21 is turned off. Therefore, when the temperature decreases again and reaches the lower limit discrimination level 14 at time t7, the switch S
W3 turns ON again. Thereafter, such a series of previous operations is maintained repeatedly until time t'l is reached.

In this way, in this embodiment, daytime heating can be performed using low-cost late-night electricity.

Also, the temperature g that exceeds the melting point KO' (r of the heat storage material 4!ff17
Since this requires a large amount of heat, the temperature change u1 is slow and comfortable. Moreover, the comfortable temperature maintenance period when the temperature drops is also maintained for a relatively long time. Furthermore, the heat insulating cushion layer prevents heat from radiating downward, making it possible to increase thermal efficiency. In addition, 22 heating wires energized by the night AC power supply M21 are distributed between the heat storage layer 40 and the heat insulating cushion layer 3, so that heat can be efficiently transferred to the heat storage material 4. .

The heating device according to the present invention can be used not only for floor heating, but also for a wide range of applications such as devices for heating by being attached to a surface such as a ceiling or a wall.

Effects As described above, the present invention includes a flatly arranged heat storage material having a melting point near the heating temperature, and a heating means energized by electric power to heat the heat storage material.

Since the heat storage material is melted by the heating means 1, it is possible to heat the heat storage material and take heat at the same time,
When the power is turned off after heating for 71n, heating can be performed using the latent heat of the heat storage material, thus making it possible to reduce the consumption of electrical energy as much as possible.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a heating device l according to an embodiment of the present invention, and FIG.
The figure is a cross section taken from the section line ■-■ in Figure 1] 1. Third
The figure is a block diagram showing a control mechanism for controlling the heating temperature of the heating device, and FIG. 4 is a heater 20 of another embodiment.
0 flat MnIAI, FIG. 6 is a sectional view taken along the cutting plane line M-v in FIG. 5, and FIG. is switch S
W3. 3 is a graph showing a SWJ cutoff state and a temperature increase state related thereto. 1.20... Heater, 4... Heat storage material, 6,2], 2
2... Heating wire, 7, 23.24... Temperature detection means,
10... Processing circuit, 11... Clock means, SWI, S
W2゜SW3. SW4...Switch, Ml, M2...
- Partial procedural amendment written by Patent Attorney Kei Nishi, representing AC power supply, dated March 22, 1985 To the Commissioner of the Japan Patent Office 1. Case indication Patent application 1983-98358 2. Name of the invention Planar heating device 3. Amendment. Applicant Address: 4, Agent Address: 1-13-38 Nishihonmachi, Nishi-ku, Osaka, Japan New Industrial Building Country Equipment EX0525-5985 INTAPTJ International Fax
GIII & GII (06) 53B-0247 Spontaneous amendment 6, Application subject to amendment and title of the invention column in the specification, Claims column and Detailed description of the invention column 7, Contents of the amendment (1) The title of the invention in the application and specification is corrected as follows. (2) The claims are as shown in the attached sheet. (3) In the specification, page 1, line 13, page 2, line 5, and page 12, line 16 (4) In the specification, page 3, lines 15 to 16, the phrase "from a solid phase to a liquid phase" should be changed to "from a solid phase to a liquid phase." The claims above include a heat storage material arranged flat and having a melting point near a heating temperature, and a heating means for heating the heat storage material by being energized with electric power, the heat storage material being melted by the heating means. A planar heating device characterized by: 3-

Claims (1)

[Claims] A heat storage material that is arranged flat and has a melting point near heating temperature. and heating means for heating the heat storage material using an electrically energized force. A surface heating device characterized in that the heat storage material is melted by the heating means.