JPH0120498Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a combustion device used for home heating, etc.

Conventional configurations and their problems Conventionally, wick-type liquid fuel combustion devices used in kerosene stoves, etc., had a simple configuration and were easy to handle, but the area of the red-hot part was still small, and the combustion flame Temperature unevenness is likely to occur due to the presence or absence of the red-hot body, so a large amount of radiant heat cannot be obtained and the appearance is poor.

Purpose of the invention The present invention solves these conventional problems by increasing the red-hot temperature of the upper red-heating element, preventing uneven red-hotness, obtaining good radiant heat, and improving combustion characteristics.

Structure of the invention The present invention has an upper incandescent element attached to the peripheral wall of the main combustion gas passage opened in the center of the partition plate, a reinforcing metal fitting provided at the lower end of the upper incandescent element, and A gap is provided between the flame expansion plate and this upper incandescent body, and the central opening of the partition plate is opened and closed by a resistance plate.

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

In the figure, 1 is the lamp wick, its upper end is the inner flame tube 2,
It is exposed to a combustion chamber 4 made up of an outer flame tube 3 during combustion, and is provided so as to move up and down through a gap made up of a core guide tube 5 and an outer core tube 6. Further, the wick outer tube 6 is provided with a plurality of air holes 6a so as to face the lamp wick 1. The inner flame cylinder 2 is provided with a plurality of air holes 2a on the side wall and a plurality of air holes 2b on the top plate. The outer flame cylinder 3 has a plurality of air holes 3a in its side wall, and has a red-hot body 7 made of a material such as wire mesh on the top thereof.
has been established. The incandescent body 7 has many holes 7a. Reference numeral 8 denotes an outer cylinder, and a transmitting cylinder 9 made of a heat-resistant glass cylinder is provided on the upper part of the outer cylinder. These inner flame tube 2, outer flame tube 3, and outer tube 8 are concentrically assembled by cross pins 10 to form a combustion tube 11. A flame expansion plate 13 is provided above the inner flame tube 2 through a passage 12, and an upper incandescent body 14 made of a material such as a wire mesh is placed above the flame expansion plate 13 with a gap 15 at the upper end of the flame expansion plate 13.
It is attached to the partition plate 16 via. A reinforcing metal fitting 17 is provided at the lower end of the upper incandescent body 14 to prevent deformation of the incandescent body 14. The outer periphery of the partition plate 16 is joined to the upper part of the transmission tube 9. Partition plate 1
6 includes a main combustion gas passage 16a with a large opening in the center and a large number of auxiliary combustion gas passages 16 around the main combustion gas passage 16a.
b. The upper part of the upper incandescent body 14 is attached to the peripheral wall of the main combustion gas passage 16a. A resistance plate 18 larger than the opening of the main combustion gas passage 16a is provided above the main combustion gas passage 16a, and a shaft 19 opens and closes the main combustion gas passage. A is a secondary flame.

In the above configuration, when the lamp wick 1 is ignited, combustion starts, and high-temperature combustion gas due to combustion passes through the combustion chamber 4, the main combustion gas passage 16a of the partition plate 16, and the auxiliary combustion gas passage 16b, thereby generating a thermal draft. Air necessary for combustion flows through the air holes 2a and 3a of the inner flame tube and outer flame tube 3, the hole 7a of the incandescent body 7, etc.
The airflow from the fuel tank and the heat from the flame held in each air hole are supplied to evaporate the liquid fuel and sustain combustion.

The figure shows when the resistance plate 18 is raised to increase the combustion amount, the main combustion gas passage 16a is opened wide, the draft amount is increased, a large amount of air flows into the combustion tube 11, and the air near the lamp wick 1. The amount increases and the evaporation of the liquid fuel is accelerated. At this time, the upper red-hot body 14
Since a gap 15 is provided between the flame expansion plate 13 and the flame expansion plate 13,
A part of the high temperature combustion gas passes through this gap 15,
The temperature at the lower end of the upper incandescent body 14 is increased to prevent uneven redness of the upper incandescent body 14 due to the flame form of the secondary flame. In addition, thermal deformation due to a temperature rise in the upper incandescent body 14 and temperature changes in varying the amount of combustion is prevented by the reinforcing metal fittings.

Effects of the invention As described above, according to the invention, the following effects can be obtained.

(1) Since the upper incandescent body is provided at the top of the flame expansion plate with a gap in between, part of the combustion gas flows through the gap to the main combustion gas passage, increasing the temperature at the lower end of the upper incandescent body. , increase the red-hot temperature of the upper red-hot body,
Can prevent uneven red heat.

(2) A secondary flame is formed near the flame expansion plate due to the combustion gas coming out of the combustion chamber, but since there is a gap between the upper incandescent body and the flame expansion plate, the secondary flame also spreads onto the flame expansion plate. As a result, the flow velocity of the combustion gas can be made gentler, the flame holding of the secondary flame can be more stabilized, the combustion characteristics can be improved, and uneven redness of the upper red-hot body can be prevented.

(3) The upper incandescent element is made of a material such as wire mesh, but a reinforcing metal fitting is provided at the lower end of the upper incandescent element to prevent thermal deformation due to temperature rises in the upper incandescent element and temperature changes when the amount of combustion is varied. It is possible to prevent this and obtain appropriate radiant heat.

(4) Since the upper incandescent body is provided, the area of the incandescent part increases, and a large amount of radiant heat can be obtained for good warming back.

(5) Combustion gas passes through the main combustion gas passage opened by the resistor plate, allowing the upper incandescent body to glow well, and conversely, when the main combustion gas passage is closed, the red-hot state can be reduced, and the amount of combustion can be visually checked. I can convey it.

(6) Since the upper incandescent element is installed while being suspended by a partition plate, it is possible to prevent uneven redness that tends to occur below the upper incandescent element, and the incandescent temperature can be increased because heat does not escape to other areas. .

[Brief explanation of drawings]

The figure is a sectional view of a combustion device showing an embodiment of the present invention. 2... Inner flame tube, 13... Flame expansion plate, 14... Upper incandescent body, 15... Gap, 17... Reinforcement fittings.

Claims (1)

[Scope of utility model registration request] An inner flame tube having a plurality of air holes, an outer flame tube having a plurality of air holes provided concentrically on the outside of the inner flame tube, and a permeable flame tube provided concentrically on the outside of the outer flame tube. an outer cylinder on which the cylinder is placed; a flame expansion plate provided through a passage above the inner flame cylinder; an upper incandescent body provided above the flame expansion plate with a gap; a reinforcing metal fitting provided at the lower end of the incandescent body, a partition plate in which the upper incandescent body is attached to the main combustion gas passage opened in the center and whose outer peripheral part is joined to the upper part of the transmission tube; A combustion device comprising a large number of auxiliary combustion gas passages provided around a gas passage, and a resistance plate that opens and closes the main combustion gas passage from above.