JPS595288B2 - heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating device that uses a closed container whose interior is deaerated and filled with a working fluid.

BACKGROUND ART Conventionally, there is a type of iron plate griller in which a gas burner is disposed below an iron plate that is a heated object.

However, in this case, the temperature of the iron near the burner was excessively high, causing uneven grilling of the meat, etc.

Furthermore, if the thickness of the iron plate is increased in order to prevent this, the disadvantages are that the material cost and weight increase.

The present invention solves the above-mentioned drawbacks and provides a heating device that can heat an object to be heated almost uniformly.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes the main body of a teppanyaki grill, and an iron plate 3 is installed on the upper surface of a frame 2, and a half-doughnut-shaped airtight container 4 is welded to the bottom of this iron plate 3.

Note that the radius of the semicircular cross section of this closed container 4 is gradually expanded.

Further, the working liquid 5 is sealed inside the closed container 4 leaving a space 6, and gases other than the vapor of the working liquid 5 are removed from this space 6 as much as possible.

Further, as described above, since the radius of the semicircular cross section is gradually increasing, the working liquid 5 remains in the liquid reservoir T near the maximum radius.

A burner 8 is provided near the bottom of the liquid reservoir 7 and slightly inside the annular shape of the closed container 4.

9 is the operating cock of burner 8, 10 is the gas hose, 11
are the legs attached to the bottom of the frame 2.

The operation of the above configuration will be explained next. First, when the burner 8 is ignited by the operating cock 9, the working liquid 5 accumulated in the liquid reservoir 7 is heated, and its vapor fills the space 6.
It condenses at the bottom of the iron plate 3, giving latent heat of condensation to the iron plate 3.

Further, the condensed liquid returns to the liquid reservoir 7 by gravity and is heated and evaporated again, so that the heat of the burner 8 is continuously transmitted to the iron plate 3.

This will be explained with reference to FIG.

This figure is a view of the iron plate 3 viewed from above, and the annular part where the closed container 4 is attached, that is, the part indicated by the diagonal line A, is
The temperature is almost uniform.

Furthermore, the heat from the burner 8 is not entirely applied to the working liquid 5, but because the burner 8 is installed slightly inside the annular shape of the closed container 4 as described above, the remaining heat is applied to the center of the iron plate 2. part, that is, the part without the closed container 4.

This is shown in the shaded area B in FIG. 3, where the temperatures in the shaded areas A and B are almost uniform.

Therefore, the entire iron plate 3 is heated uniformly, the temperature distribution on the surface of the iron plate 3 becomes almost uniform, and it is possible to prevent uneven grilling of meat, etc.

In addition, since the radius of the semicircular cross section of the closed container 4 gradually expands, the liquid reservoir 1 is located at a lower level compared to other parts, so for example, the teppanyaki body 1 is not horizontally Even if the liquid reservoir section 7 is lifted up due to installation at a slight incline, the working liquid 5 will still remain in the liquid reservoir section 1, and the evaporation of the working liquid 5 will not stop, resulting in stable heating of the iron plate. is possible.

Further, since the entire iron plate can be heated almost uniformly by simply providing the burner 8 near the liquid reservoir 3, the shape of the burner 8 may be simple.

Further, there is no need to particularly increase the thickness of the iron plate.

Further, the sealed capacity 4 has a half-doughnut shape and has a pressure-resistant structure, so that the material thickness can be reduced.

It has the following effects. Next, another embodiment of the present invention is shown in FIG.

Parts similar to those in Figure 1 have been given the same numbers.

To explain the different parts from FIG. 1, reference numeral 12 is a donut-shaped sealed container, which is composed of a pipe with a uniform diameter, and is installed in an inclined manner at the bottom of the iron plate 3, and the hydraulic fluid 5 is sealed in the inclined bottom. ing.

The operation is almost the same as that of the previous embodiment, but in this embodiment two burners are provided, so that the main burner 13 is used for small quantities of baked goods, and the auxiliary burner 14 can also be used for large quantities. This is what I did.

That is, the working fluid 5 is heated by the auxiliary burner 14, and this steam is uniformly distributed inside the space 6, so that the shaded area A in FIG. 3 is uniformly heated.

Further, the shaded area B is uniformly heated by the main burner 13.

In this case, by adjusting the main burner 13, it is possible to make the temperature of the shaded area B substantially the same as the temperature of the shaded area A, and it is possible to make the entire iron plate 3 a substantially uniform temperature.

Further, the operating cock 15 is used to operate the two burners.

In this embodiment, the closed container 12 is made of a pipe having a uniform diameter and is formed into an annular shape, which is easy to process and does not need to be particularly welded to the iron plate 3, and can be fixed inside the frame 2.

Also, the closed container 12 is slightly inclined (1° to 45°) with respect to the horizontal so that the part heated by the auxiliary burner 14 is at the bottom.
(optimally about 5° to 15°), it can operate satisfactorily even when the teppanyaki main body 1 is slightly tilted, similar to the above embodiment.

In addition, in the above two embodiments, the heated object was an iron plate, but
According to the present invention, the present invention is not limited to this, and may be a rice cooker or simply the internal air of a heating tank or the like.

Further, the airtight container does not need to be a complete ring, but may be C-ring shaped, U-shaped, meandering shaped, or may have a plurality of shapes.

Therefore, it can correspond to any shape of the iron plate. Further, a capillary material may be provided in the lowest part of the reservoir of the hydraulic fluid inside the closed container, thereby making it easier to stabilize the hydraulic fluid.

As described above, according to the present invention, a substantially annular closed container whose inside is deaerated and filled with a working liquid is provided below the object to be heated, and the inner bottom of the closed container is slightly tilted horizontally. Since the heat source is provided near the lowest part of the bottom, the object to be heated can be heated almost uniformly, and since the bottom is slanted, the closed container is slightly inclined when in use. Therefore, even if the lowermost portion is lifted up, the hydraulic fluid remains within the lowermost portion, and the operation inside the closed container is not blocked.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway sectional view showing one embodiment of the present invention, and FIG.
The figure is a partially cutaway sectional view of another embodiment, and FIG.
FIG. 2 is a plan view for explaining the effect of the iron plate 3 shown in FIG. 3... Iron plate, 4, 12... Airtight container,
5... Working liquid, 8, 13, 14...
Heat source (burner).

Claims (1)

[Claims] 1. A substantially annular sealed container whose interior is deaerated and which is filled with a working liquid is provided below the object to be heated, and the inner bottom of the sealed container is slightly inclined with respect to the horizontal. With the like,
A heating device characterized in that a heat source is provided near the lowest part of the bottom. 2. The heating device according to claim 1, wherein the object to be heated is an iron plate of a teppanyaki iron.