JPH0129392Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heating device mainly useful for heating and drying for agricultural and livestock industries.

(Prior Art) FIGS. 3 and 4 schematically illustrate a typical conventional heating device.

The heating device B in FIG.
A burner 51 is disposed below the truncated head 50a of the burner 50, and a radiant surface section 52 is disposed below the conical section 50b so as to sandwich the nozzle 51a of the burner 51.

The heating device C shown in FIG. 4 has a burner 61 hanging below the truncated part 60a of the truncated inverted cone-shaped reflecting plate 60, and a burner 61 and a crater 61 below the conical part 60b.
The radiation surface section 62 is disposed to sandwich the point a, and the second radiation surface section 63 is disposed between the cone section 60b and the crater 61a.

By the way, the reflecting plates 50 in both devices B and C,
Both 60 are formed by drawing a metal plate into the shape of a truncated inverted cone, and have an open top surface.

Therefore, while the reflectors 50, 60 and the second radiant surface portion 63 are heated by the flame, they are deformed due to the difference in thermal expansion caused by molding distortion caused by drawing molding.
The conical part on the free side may warp with respect to the truncated part on the fixed side, causing distortion in the positional relationship with the crater and reducing radiation efficiency, or causing flames to form on the second radiating surface. There is a problem of uneven contact and slippage. moreover,
There is heat loss due to heat radiation from the heated top surface of the reflector, and since the top surface is open, the heat loss is large and is lost to the atmosphere, which is a factor that reduces the radiation ability of the radiating surface section and the second radiating surface section. It's getting old.

(Problem to be solved by the invention) The problem to be solved by the invention is to eliminate the deformation of the reflector and almost eliminate heat loss, and to achieve the required results as initially set where there is no structural heat loss. The heating device has heating ability.

(Means for Solving the Problems) The means taken by the present invention to achieve the above-mentioned problems are to dispose a burner under the truncated head of the truncated inverted cone-shaped reflector and to A radiation surface of a metal mesh or a perforated plate is placed below the burner so as to sandwich the burner nozzle, and a lid plate is placed over the reflector to form a sealed heat insulating space. It is characterized by a structure in which a spacer is interposed between the lid plate and the gap between the two plates is fixed.

(Function) The reflector, lid, and spacer work together as one,
A cover plate fixes the outer peripheral side of the reflector, and a spacer fixes the inner side, and a sealed heat insulating space between the top surface of the reflector and the lid minimizes heat radiation from the top surface of the reflector.

This eliminates thermal deformation of the reflector and substantially eliminates heat loss.

(Example) Hereinafter, an example of implementation of the present invention will be described with reference to the drawings.

A in the figure is a heating device, and this heating device A has a burner 2 under the truncated head 1a of the truncated inverted cone-shaped reflector 1.
At the same time, a radiation surface part 3 made of a metal mesh or a perforated plate is provided below the conical part 1b so as to sandwich the crater 2a of the burner 2, and a lid plate 4 is placed over the reflector plate 1 to form a hermetically sealed state. A heat insulating space 5 is formed, and a spacer 6 is interposed between the reflecting plate 1 and the cover plate 4 in the heat insulating space 5 to fix the distance between the two plates.

The outer periphery of the reflecting plate 1 and the radiation surface part 3 are fixed to the folded edge 4a of the outer periphery of the cover plate 4,
The spacer 6 is a cylindrical piece whose diameter is slightly larger than the diameter around the burner 2's crater 2a.
The heat insulating space 5 is defined in the upper surface area of the conical part 1b and the conical part side part of the truncated head 1a of the reflecting plate 1, which the flame comes into contact with. This heat insulating space 5 uses gas sealed within the space as a heat insulator, and almost eliminates heat loss due to heat radiation from the cone portion 1b and the cone side portion of the truncated portion 1a.

In addition, a disc-shaped red-hot plate 7 made of metal mesh is attached to the cone-side portion of the truncated head 1a of the reflector plate 1, in place of the protrusion in the conventional skeleton-made one, to reduce the amount of gas. Similarly, an annular glowing plate 8 made of metal mesh is directly attached to the cone part 1b by spot welding or the like, so that a medium or high flame comes into contact with it. The red-hot plates 7 and 8 are designed to become red-hot and emit radiant heat in a range commensurate with the strength of the flame from a small flame to a strong flame. The incandescent plates 7 and 8 are preferably made of a material that is difficult to oxidize, such as stainless steel.

The cap 9 is fixed to the center of the upper surface of the burner 2 and the lid plate 4
A handle 1 is attached to the upper end of the support shaft 10 which is fixed in a suspended manner.
1, and the handle 11 allows the hook 12 to be hooked onto a suitable hanging tool 13, so that the device A can be suspended from the hanging tool 13. 14 valves adjust the amount of gas supplied to the burner 2.

As a result, thermal deformation of the reflector 1 is eliminated, the positional relationship between the reflector 1 and the radiation surface section 3 with respect to the crater is not distorted, and heat loss in the cone section 1b and the truncated portion 1a on the cone section side is also reduced. Most of the flame disappears, and the red-hot plates 7 and 8 become red-hot in proportion to the strength of the flame, and the protrusions on the conventional skeleton corresponding to the reflecting plates are efficiently heated with a gas amount that is each step smaller than the amount of gas that makes the protrusions red-hot.

(Effect of idea) Therefore, the present invention has the following advantages.

The reflector, the cover plate that covers the top surface of the reflector, and the spacer between the two plates form a three-part assembly, which prevents thermal deformation of the reflector and distortion in the positional relationship between the crater, the reflector, and the radiation surface. It maintains the initially set state of contact with the flame without causing any heating, and always exhibits a constant heating ability.

Due to the heat insulating space, there is almost no heat loss from the reflector, allowing for efficient heating.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the heating device of the present invention. FIG. 2 is a reduced exploded perspective view of the main parts. 3 and 4 are schematic diagrams showing conventional devices. In the figure, 1 is a reflector, 1a is a truncated head, 1b is a cone, 2 is a flame, 2a is a crater, 3 is a radiation surface, 4 is a cover plate, 5 is a heat insulating space, and 6 is a spacer.

Claims (1)

[Scope of utility model registration request] A burner is disposed below the truncated head of the truncated inverted cone-shaped reflector, and a radiating surface portion of a metal mesh or perforated plate is disposed below the cone so as to sandwich the burner mouth, and a lid is placed on the reflector. A heating device in which a sealed heat insulating space is formed by covering a plate, and a spacer is interposed between a reflecting plate and a cover plate in the heat insulating space to fix the distance between the two plates.