JPH02562Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a household combustion device that performs surface combustion on a wire mesh surface to improve radiant heating and hot air heat exchange efficiency.

Conventional configuration and its problems A conventional combustion device of this type is shown in FIG.

Reference numeral 1 denotes a burner, which is composed of a vaporizing cylinder 3 with a heating heater 2 embedded in its lower part, a rectifying cylinder 4 having a large number of pores extending from its upper end, and a wire mesh surrounding the vaporizing cylinder 4 through a rectifying space 5 having minute gaps. A combustion tube 6 is attached, and an outer tube 8 made of a heat transmitting material is fixed with a combustion space 7 maintained around the combustion tube by a closing plate 9 provided above the burner and an exhaust tube 10 included from the lower part of the vaporization tube. 1
1 is an exhaust outlet opened around the exhaust pipe 10.
Then, the ventilation fan 12 is inserted from the opening at the bottom of the vaporizer cylinder.
and a thin tube nozzle 1 facing into the vaporizing cylinder on its central axis.
3 and a fuel tank 15 via a fuel pump 14.
is connected to.

In the above structure, an outer cylinder 8 made of glass with good heat permeability is arranged around the combustion cylinder 6 made of wire mesh through a combustion space 7, and this outer cylinder is divided by a partition plate 17, and the front side is made into a radiation surface. The other side is the ventilation passage 18
A warm air fan 22 is provided at the rear facing the front. In this case, the surface of the wire mesh becomes red hot due to the combustion flame formed in the combustion tube 6 and emits infrared rays, emitting radiant heat, but the heat is also radiated to the air passage 18 side, directly damaging the hot air fan 22 installed at the rear and the appliance itself. The temperature rises to a high temperature, causing thermal deformation and deterioration of the hot air fan and equipment, and the red-hot state itself leaks from the air inlet of the hot air fan to the rear of the equipment, emitting radiant heat, which is unfavorable from a safety standpoint. In this way, about half of the radiation amount escapes into the interior of the device or the rear surface, and the radiation amount from the front radiation surface is also halved, deteriorating radiation efficiency.

Purpose of the invention The present invention solves these conventional problems, and aims to improve radiation efficiency and heat exchange efficiency by regulating the direction of infrared radiation.

Structure of the invention The present invention partitions the outer periphery of an outer cylinder arranged around a combustion cylinder with a partition plate, divides the outer peripheral surface of the outer cylinder into a radiation surface and a ventilation passage surface, and a shielding layer is provided on the ventilation passage surface of the outer cylinder. It has been established.

With this configuration, radiation can be dissipated to the front side of the combustion device, and heat exchange to hot air can be improved.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below based on FIG. 2.

In Fig. 2, reference numeral 16 denotes the main body of the device, in which the burner 1 is placed near the center, and the outer cylinder 8 is divided by a partition plate 17, and a ventilation passage 18 and a radiation surface 19 are provided near the top of the lower exhaust outlet 11 of the burner 1. A wind outlet 20 is formed. 21 is an instrument partition plate. 22
is a hot air fan with an opening at the rear of the ventilation passage. A shielding layer 23 is applied to the surface of the outer cylinder on the side of the ventilation passage 18 with the partition plate 17 as a boundary by baking, printing, or blasting with heat-resistant paint such as synthetic resin or glass paint.

In the above configuration, after heating the vaporizing cylinder 1 by the heater 2, the blowing fan 12 is driven, and the fuel sucked from the fuel tank 15 by the fuel pump 14 is discharged from the thin tube nozzle 13 and hits the high temperature vaporizing wall together with the combustion air. Generates vaporized gas. The premixture, which is a mixture of vaporized gas and combustion air, is guided to a rectifier tube 4 placed at the top, discharged through a small hole, further rectified in a rectifier space 5 with minute gaps, and discharged from a combustion tube 6 made of wire mesh, where it is ignited. It is ignited by a container (not shown) to form a combustion flame on the surface of the wire gauze, and while complete combustion occurs in the combustion space 7, it is exhausted from the lower exhaust outlet 11 as shown by the broken line arrow. A hot air fan at the rear of the device main body 16 is driven, and heat is exchanged through the air passage 18 partitioned by a partition plate 17 and in contact with the outer cylinder 8, and the hot air is exchanged with exhaust gas from the hot air outlet 20 as shown by the solid line arrow. Emit warm air while mixing.

Here, the outer cylinder is divided by the partition plate 17 into a blower passage surface facing the blower passage 18 side and a radiation surface 19 side, and a shielding layer 23 is applied around the outer cylinder on the blower passage side, so that the surface of the combustion tube 6 is By absorbing or reflecting infrared radiant heat generated by the device and shielding it, the temperature of the hot air fan 22 at the rear and the device body 16 is prevented from rising. It also absorbs radiant heat to increase the temperature of the shielding layer, improves the heat exchange efficiency of the heated air in the ventilation passage, and uses reflection of radiant heat to improve the amount of radiation toward the radiant surface.

Effects of the invention In this way, by covering part of the periphery of the outer cylinder with a shielding layer, it absorbs or reflects infrared radiant heat, completely blocking its rearward radiation.
In addition to preventing thermal deformation of the appliance body and functional deterioration of the hot air fan, infrared radiation from the opening of the hot air fan to the rear of the appliance is eliminated, eliminating the risk of temperature rise due to heat dissipation. Since the red-hot part of the radiation is not visible, visual anxiety is eliminated and safety is improved. Furthermore, by absorbing or reflecting radiant heat, the efficiency of heat exchange to warm air is improved, and the amount of radiation is increased, thereby improving heating efficiency.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a burner in a conventional combustion device;
Figure A is a plan sectional view of a combustion device that is an embodiment of the present invention, and Figure 2B is a front view of the same. 6... Combustion cylinder, 7... Combustion space, 8... Outer cylinder,
17... Partition plate, 18... Ventilation passage, 19...
Radiation surface, 23...shielding layer.

Claims (1)

[Scope of utility model registration request] An outer cylinder made of a heat transmitting material is arranged on the outer periphery of a combustion cylinder whose combustion surface is formed with a wire mesh, through a combustion space, and the outer periphery of this outer cylinder is partitioned with a partition plate, and the outer peripheral surface of the outer cylinder is used as a radiation surface and a ventilation surface. A combustion device that is divided into passage surfaces and provided with a shielding layer on the ventilation passage surface of the outer cylinder.