JPH0216100Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heating device that is mainly useful for heating and drying in the agricultural and stockpiling industry.

(Prior Art) FIG. 4 schematically shows a typical conventional heating device.

This heating device B has a burner 51 disposed below a truncated head 50a of a truncated inverted cone-shaped reflecting plate 50, and a radiant surface portion 52 of a perforated plate sandwiching a crater 51a of the burner 51 under a conical portion 50b. The configuration is such that

By the way, since the radiant surface part 52 has a perforated plate structure, not only does it take a long time to become red hot after being heated by a burner, but also the degree of red heat, that is, the range and degree of red heat is insufficient, and the radiation efficiency is dissatisfied. I have a certain problem.

(Problems to be Solved by the Invention) The problems to be solved by the invention are to provide a useful device in which the radiating surface portion has a short red-hot time and has good radiation efficiency.

A burner is disposed below the truncated head of the truncated inverted cone-shaped reflector, and a radiating surface portion of the perforated plate is disposed below the cone so as to sandwich the burner mouth, and the inner periphery of the upper surface side of this radiating surface portion is disposed below the cone. It is characterized by a structure in which an annular red-hot part of a metal mesh is integrally provided along the surface part.

(Function) The annular red-hot portion of the metal mesh quickly becomes red-hot before the perforated plate becomes red-hot, and immediately emits radiant heat, and also serves as a heat medium for the perforated plate, promoting the red-hot heat and making it sufficiently red-hot.

As a result, the radiant surface portion has a quick red-hot time and high radiation efficiency.

(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 of a perforated plate is arranged below the conical part 1a so as to sandwich the crater 2a of the burner 2, and an annular red-hot part of a metal mesh is provided on the inner peripheral surface part of the upper surface side of the radiation surface part 3. 4 are integrated together.

The radiating surface part 3 is integrated with an annular red-hot part 4 by directly attaching it by spot welding, etc., and the porous part 5 on the outer periphery of this red-hot part 4 is used as an exhaust port 6. forms a flame path 7 along which the flame flows along the reflector 1 and the red-hot portion 4 and is exhausted from the exhaust port 6.

The annular red-hot portion 4 has a surface area that can be contacted by flames of medium to high flame, and is made of a material that is difficult to oxidize, such as stainless steel.

A cover plate 8 is placed over the reflector plate 1 to form a hermetically sealed heat insulating space 9, and the reflector plate 1 in the heat insulating space 9 is covered with a cover plate 8.
A spacer 10 is interposed between the cover plate 8 and the cover plate 8 to fix the distance between the two plates.

The outer periphery of the reflecting plate 1 and the radiation surface portion 3 are fixed to the folded edge 8a of the outer periphery of the cover plate 8, and are integrated with the cover plate 8. It has a cylindrical shape with a slightly smaller diameter than the above, and defines a heat insulating space 9 in the upper surface area of the conical part 1b and the conical part side part of the truncated head 1a, which the flame comes into contact with in the reflecting plate 1. This heat insulating space 9 is constructed using a gas sealed in the space as a heat insulator, and the conical part 1b
In addition, heat loss due to heat radiation from the conical side portion of the truncated head 1a is almost eliminated.

In addition, a metal mesh disk-shaped red-hot plate 11 is attached to the cone-side portion of the truncated head 1a of the reflector 1 in place of the protrusion in the conventional skeleton-made one, so that when the gas amount is reduced, The small flames in the flames make it red hot when it comes into contact with it. The incandescent plate 11 is made of a material that is difficult to oxidize, such as stainless steel.

The cap 12 is attached to the upper end of a support shaft 13 which is fixed to the center of the upper surface of the burner 2 and fixes the cover plate 8 in a hanging manner, together with a handle 14. The device A can be hung from the hanging tool 16 by being hooked onto the tool 16. A valve 17 adjusts the amount of gas supplied to the burner 2.

As a result, the red-hot plate 11 and the annular red-hot portion 4 of the metal mesh rapidly become red-hot through the flame path 7 in proportion to the strength of the flame, and immediately emit radiant heat.
The red-hot portion 4 is a part of the radiant surface portion 3 and acts as a heat medium to promote the red heat of the radiant surface portion 3 and maintain it in a sufficiently red-hot state, and the protrusion in a conventional skeleton corresponding to a reflector plate is a red-hot gas. It becomes red-hot efficiently with a gas amount that is each step smaller than the amount.

In addition, the reflector 1, the cover plate 8 covering the top surface of the reflector 8, and the spacer 10 between the two plates form a three-part assembly, so that there is no thermal deformation of the reflector 1 and the radiation between the crater 2a and the reflector 1 is eliminated. Without causing any distortion in the positional relationship with the surface part 3, maintaining the contact state with the flame as originally set,
Always exhibits constant heating ability, and has an insulated space 9
Therefore, there is almost no heat loss in the reflecting plate 1, and heating can be performed efficiently.

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

The annular red-hot part of the metal mesh is integrated as a part of the radiant surface, and quickly becomes red-hot and emits radiant heat, and at the same time accelerates the heating of the radiant surface area of the adjacent part, to achieve a sufficient red-hot degree, that is, the red-hot range and It can be made red hot, the time from ignition to the start of heating by radiant heat is quick, and the radiation efficiency is high.

The porous area around the outer circumference of the annular red-hot part on the radiation surface of the perforated plate serves as an exhaust port, and the flame flows smoothly between the reflective plate and the annular red-hot part, resulting in no flame disturbance and high radiation efficiency without heating spots. It is something that you have.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the heating device of the present invention. FIG. 2 is a partially enlarged longitudinal sectional view. FIG. 3 is a reduced exploded perspective view of the main parts. FIG. 4 is a schematic diagram showing a conventional device. In the figure, 1 is a reflector, 1a is a truncated part, 1b is a cone part, 2 is a burner, 2a is a crater, 3 is a radiation surface part,
4 is the annular red-hot part.

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 the perforated plate is disposed below the cone so as to sandwich the burner mouth, and the inner periphery of the upper surface side of this radiating surface portion is disposed below the cone. A heating device with an annular red-hot metal mesh integrally attached to the surface.