JPH08320152A - Heat accumulating device in electric heat accumulating type hater - Google Patents

Abstract

PURPOSE: To improve a heating efficiency when heat is accumulated by a method wherein there is provided a heat accumulating material having an arcuate recessed part with an arcuate outer surface of a heat transfer plate embedded and held in it and then a sheath heater is held by the heat transfer plate. CONSTITUTION: A pair of heat transfer plates 3 having an arcuate part 2 extending along an outer surface of a sheathed heater 1 covering a substantial linear line part of the sheathed heater 1 formed into a U-shape is provided. Other surfaces of the arcuate part 2 of the heat transfer plate 3 are embedded to hold the heat transfer plate 3. A heat accumulating material 6 formed with a U-shaped recess part where the arcuate recessed part 4 and the U-shaped part of the sheathed heater 1 is provided. Then, the sheathed heater 1 is stored in the arcuate part 2 of the heat transfer plate 3, an outer surface of the arcuate part 2 of the heat transfer plate 3 is coincided with the arcuate recess 4 of the heat accumulating material 6 and the sheathed heater 1 is held by the heat accumulating material 6 through the heat transfer plate 3 so as to constitute a heat accumulating device. Heat generated by the sheathed heater is transmitted to the heat transfer plate to cause the heat accumulating material to be heated by the heat transfer plate of wider area, resulting in that a heat accumulating effect can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage unit of an electric heat storage heater.

[0002]

2. Description of the Related Art In recent years, along with the widespread use of electric heat storage heaters that release the heat stored in a heat storage material at the start of operation to enhance the heating effect, there has been an increasing demand for a heat storage unit having good heat storage efficiency and heat dissipation efficiency.

Conventionally, a heat storage unit of this type of electric heat storage heater has a structure as shown in FIG. The configuration will be described below with reference to FIG.

As shown in the figure, the heat storage unit 101 has a sheathed heater 102 sandwiched between heat storage materials 103 made of bricks,
The sheath heater 102 is energized, and the heat storage material 103 is directly heated by the heat of the sheath heater 102 to store heat, and the heat stored in the heat storage material 103 during heating is radiated.

[0005]

According to the heat storage unit 101 of such a conventional electric heat storage heater, only the small area in contact with the sheathed heater 102 is heated, so the heat storage efficiency of the heat storage material 103 is poor. There was a problem.

Further, air was brought into contact with the surface of the heat storage material at the time of heat radiation, but the portion where the heat storage material 103 is heated by the sheath heater 101 and the surface serving as the heat radiation portion are distant from each other, so that heat radiation cannot be performed efficiently. There was a problem.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems and to provide a heat storage unit having high heat storage efficiency.

A second object is to improve heat dissipation efficiency.

[0009]

A heat storage unit of an electric heat storage heater according to the present invention has a first structure for achieving the first object.
Means of a pair of flat plate-shaped heat transfer plates having an arc-shaped portion along the outer surface of the sheathed heater, and an arc-shaped portion in which the outer surface of the arc-shaped portion of the heat transfer plate is embedded so as to sandwich the heat transfer plate. The heat storage material is provided, and the sheathed heater is sandwiched by heat transfer plates and sandwiched by the heat storage material.

A second means for achieving the second object is to form a comb tooth portion at the end of the heat transfer plate and to project the comb tooth portion from the heat storage material.

[0011]

According to the present invention, the heat generated by the sheathed heater is transmitted to the heat transfer plate by the structure of the first means described above, and the heat storage material is heated by the heat transfer plate having a large area, and the heat storage effect is enhanced.

Further, according to the structure of the second means, the heat generated by the sheathed heater is transmitted to the heat transfer plate to heat the heat storage material by the large area heat transfer plate, and at the time of heat radiation, not only the surface of the heat storage material but also the heat storage material. Heat is also radiated from the comb teeth protruding from the material, and heat radiation efficiency is improved.

Further, when the sheath heater is energized during heat dissipation, the heat from the sheath heater is quickly transferred to the comb teeth of the heat transfer plate, and the amount of heat released increases from the heat storage material. The heat dissipation efficiency will be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

As shown in the drawing, the sheathed heater 1 is formed so as to cover a substantially straight portion of the sheathed heater 1 formed in a U shape.
A pair of flat plate-shaped heat transfer plates 3 each having an arc-shaped portion 2 along the outer surface of the heat transfer plate 3 are provided, and the outer surface of the arc-shaped portion 2 of the heat transfer plate 3 is embedded so as to sandwich the heat transfer plate 3 and a sheath. U of heater 1
A heat storage material 6 having a U-shaped recess 5 in which the character-shaped portion is embedded is provided.

Then, the sheathed heater 1 is housed in the arcuate portion 2 of the heat transfer plate 3, and the outer surface of the arcuate portion 2 of the heat transfer plate 3 is matched with the arcuate recessed portion 4 of the heat storage material 6 to transfer heat to the sheathed heater 1. A heat storage unit 7 is formed by sandwiching the plate 3 with the heat storage material 6.

In the above structure, when the sheath heater 1 is energized, the heat generated from the sheath heater 1 is transmitted to the heat transfer plate 3 sandwiching the sheath heater 1, and the heat storage material 6 is supplied from the entire surface of the heat transfer plate 3 having a large area. To be stored in the heat storage material 6. The heat stored in the heat storage material 6 is radiated to the air ventilated on the surface of the heat storage material 6 during heating to be warmed and contribute to heating.

As described above, according to the heat storage unit of the electric heat storage heater of the first embodiment of the present invention, the heat generated from the sheathed heater 1 heats the heat storage material 6 from the surface of the heat transfer plate 3 having a large area. The heating efficiency of the material 6 can be improved.

A second embodiment of the present invention will be described below with reference to FIGS. 4 and 5. The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, a comb tooth portion 8 projecting from the heat storage material 6 is provided at an end portion to form a heat transfer plate 9. The sheathed heater 1 is sandwiched by the heat storage material 6 via the heat transfer plate 9 to form a heat storage unit 10.

In the above structure, when the sheath heater 1 is energized, the heat generated from the sheath heater 1 is transferred to the heat transfer plate 9, and the heat storage material 6 is heated by the heat transfer plate 9 having a large area to store heat. Then, at the time of heat dissipation, not only the surface of the heat storage material but also the comb tooth portion 8 protruding from the heat storage material 6,
The air ventilated on the surface of the heat storage material 6 is warmed and contributes to heating.

As described above, according to the heat storage unit of the electric heat storage heater of the second embodiment of the present invention, heat is radiated not only from the surface of the heat storage material 6 but also from the comb tooth portion 8 protruding from the heat storage material 6 during heat radiation. When the sheath heater 1 is energized at the time of heat dissipation, the heat from the sheath heater 1 is also transferred to the comb tooth portion 8 of the heat transfer plate 9, and in addition to the heat dissipation from the heat storage material 6, The heat radiation from the comb tooth portion 8 is added to increase the heat radiation amount, and the heat radiation efficiency is improved.

In the embodiment, the sheath heater is formed in a U shape, but the sheath heater is not limited to the shape of the sheath heater as long as the heat transfer plate is provided so that the heat generated from the sheath heater can be transmitted. It goes without saying that it is not something.

[0024]

As is apparent from the above embodiments, according to the present invention, a pair of flat plate-shaped heat transfer plates having arcuate portions along the outer surface of the sheathed heater and the arc heat transfer plate are sandwiched. And a heat storage material having an arcuate concave portion in which the outer surface of the arcuate portion of the heat transfer plate is embedded, and the sheath heater is sandwiched by the heat transfer plate and sandwiched by the heat storage material, so that the heating efficiency at the time of heat storage is improved. It is possible to provide a heat storage unit of an electric heat storage heater that can be increased.

Further, a comb tooth portion is formed at the end of the heat transfer plate,
Since the comb teeth are projected from the heat storage material, the heat radiation efficiency at the time of heat radiation can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a heat storage unit of an electric heat storage heater according to a first embodiment of the present invention in a disassembled state.

FIG. 2 is a sectional view of the assembled state.

FIG. 3 is a top view of the installed state of the sheath heater and the heat transfer plate.

FIG. 4 is a sectional view of the second embodiment in an exploded state.

FIG. 5 is a top view of the installed state of the sheathed heater and the heat transfer plate.

FIG. 6 is a sectional view of a heat storage unit of a conventional electric heat storage heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 sheath heater 2 arc-shaped part 3 heat transfer plate 4 arc-shaped recess 6 heat storage material 7 heat storage unit 8 comb teeth 9 heat transfer plate 10 heat storage unit

Claims (2)

[Claims] 1. A pair of flat plate-shaped heat transfer plates having an arcuate portion along the outer surface of the sheathed heater, and an arcuate concave portion in which the outer surface of the arcuate portion of the heat transfer plate is embedded so as to sandwich the heat transfer plate. And a heat storage material provided with the heat storage material, wherein the sheathed heater is sandwiched by heat transfer plates and sandwiched by the heat storage material. 2. A heat storage unit for an electric heat storage heater according to claim 1, wherein a comb tooth portion is formed at an end of the heat transfer plate, and the comb tooth portion is projected from the heat storage material.