JPS6064112A - Forced charge and exhaust type burner - Google Patents

Abstract

PURPOSE:To reduce drastically a percentage of excess air and to contrive an improvement in thermal efficiency and miniaturization of a fan, by providing a throttle plate between the vicinity of a flame hole part of a burner and the fan. CONSTITUTION:Combustion air to be supplied by a fan 6 is fed to a burner 1 along with fuel gas to be spouted from a nozzle 7 as primary air and a primary flame is formed at a flame hole part 2. The remaining combustion air is fed to a secondary air chamber 9 as secondary air which rises through a plurality of current forming holes 11 provided on a partition plate 10, passes through a gap between a side wall of the flame hole part 2 and a throttle plate 12 and a gap between the flame hole parts 2, 2, flows to each of the flame hole parts 2 of the burner 1 and a secondary flame is formed on an external circumference of the primary flame. In other words, the secondary air streamed into every nook and corner of a combustion chamber 4 at the upper part of the partition plate 10 is concentrated on the circumference of the flame hole part 2 of the burner 1 through the throttle plate 12 without flowing directly to the upper part of the combustion chamber 4. Then a vortex is generated in a flow of the sec- ondary air in a gap between the throttle plate 12 and the flame hole part 2 and the vicinity of the flame hole part 2 between the flame hole parts 2, 2, dispersion of the secondary air is done sufficiently to a flame to be formed at the flame hole part 2 and a short flame is formed at the flame hole part 2, through which favorable combustion is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charge/exhaust type combustion apparatus.

The amount of air supplied for combustion in a conventional forced air supply/exhaust type combustion apparatus is approximately 1.6 times the amount of air that is theoretically required for 1 gU. The burrs are due to improper construction of the secondary air chamber and/or combustion chamber of the combustion device. That is, all of the secondary rush air supplied from the rectifying holes 11 of the partition plate 10 provided below the burner is not used for combustion, but some of it flows upward along the wall surface of the combustion chamber 71 to cause combustion. It was exhausted along with the gas. therefore,
There were drawbacks such as a decrease in thermal efficiency due to the increase in exhaust gas loss and difficulty in reducing the volume of the engine.

The present invention has been made in view of the shortcomings of the present invention, and has the following objectives: to improve the thermal efficiency of the kiln furnace, and to reduce the size of the kiln. A throttle plate is provided between the wall of the type combustion device and the vicinity of the burner mouth.

Embodiments of the present invention will be described below based on FIGS. 1 to 6.

Reference numeral 15 is a forced supply/exhaust type combustion device, which includes a combustion blower 7, a fan 6, a nozzle 7 for injecting fuel cassettes, a primary air supply from the engine 6, and a secondary air supply from the fan 6. The combustion chamber is divided into a V secondary air chamber 9 by a partition plate 10 provided with a plurality of 11 rectifying holes on the burner IF side from the burner port 2. 4. From the four peripheral walls of the burner 4 to the vicinity of the side of the burner port 2 of the burner 1, the burner port @
Except for 2 and its vicinity, the extension plate made of stainless steel or the like is used to tighten the eyes 9 and 12, and the burner 1 is fixed to the earth force.
It has a heat exchanger 5, and an exhaust valve 7.

Next, regarding the operation of the above configuration, the fan 6 generates viscous air tJ, which is also injected by the fan 6, and the fuel scum injected from the nozzle 7 as a cold air to the VC burner 1. Send n1 flame port ttll 2 K to form primary flame ligature 0 The remaining combustion air is used as secondary air and the secondary is air straw 9
The secondary air rises through the 11 rectifying holes provided in the partition plate 10 and passes through the gap between the flame port 2111+1 wall and the diaphragm plate 12 and the gap between the flame port 2, 2 to the v1 burner 1. The valley flame flows to U-gun 2, and a secondary flame purple-shaped Yakucho slope 0 is formed around the outer periphery of the primary flame.
Iull et al.

The secondary air is concentrated around the burner 1 flame 1 2 in every corner of the bonito-searing chamber 4 of the submerged partition plate 10 (L) due to the aperture similar to 12 VC, without directly entering the upper blade of the chamber 4. bo(
1'', nine vortices are generated in the flow n of the secondary air in the gap 10j between the diaphragm plate 12 and the flame opening 2, and near the 2nd side of the flame between the flame openings 2, 2. It is shaped like /JJ, and the secondary air diffusion is the main source for the flame VC. It is the flame opening part 2. A short VC flame is formed and the illusionary pair 9L is performed. The installation of the illumination plate 12 is carried out by attaching the plate-like body around the four sides of the blue plate with a central VC opening horizontally to the edge of the V# Even if you are busy, add one more (Also, add 1 ``JLL screw etc.'' to the 12g partition plate I! with an opening γ in the middle of the lees-like mold and make it into an inverted shape.) Costume.

Since the present invention has a configuration in which # and V plates are housed between the exhaust type fuel leg mounting enclosure and the vicinity of the burner mouth, the excess air ratio γ can be reduced. The thermal effect can be significantly lowered by half the same as the above, and the 71/7 is busy with downsizing.In addition to improving DJ performance, the combustion chamber can also be downsized by an order of magnitude due to short flame pain relief. The effect of reducing the overall size of the forced crucian carp extraction type combustion system is 1.

4.1 The dark single congratulation number 1 is a side view showing an embodiment of the present invention, Fig. 2 is a -r side view showing an embodiment of 1) J, and Fig. 6 is a side view showing an embodiment of the present invention. A plan view of the main part showing the example grapes.

Explanation of symbols 1. Bar t2. Flame mouth part 6. Includes heat daho 4. Burning peak 5. Exhaust violet 6. fan 7. Nozzle 8. -Next full energy 9. Feeling secondary 10. Partition plate 11. Rectification hole 12. Aperture plate 15.5gi control/exhaust combustion system Representative△Patent Attorney Kunihiko Wakabayashi Figure 1 Figure 2 ! Figure 3

Claims (1)

[Claims] 1. In a forced air supply/exhaust type combustion apparatus in which air for combustion is supplied by a fan, a throttle plate r is provided between the wall surface of the apparatus and the vicinity of the burner mouth. A forced air supply and exhaust combustion device. 2. The aperture plate is a continuous plate of a metal plate-like body that is provided in the direction of the four circumferential walls of the flame-throttle part, parallel to or inclined to the bottom part, and covers the area other than the flame-throttle part. 1/)% FF The forced air supply/exhaust type combustion apparatus according to the claims 1 and 2.