JPS6176862A - Combustion apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion device that is improved in airtightness between a plurality of burners for burning gas in combustion equipment such as a gas hot air blower.

Conventional Structures and Problems Generally, a gas hot air fan sucks combustion gas from a burner using a blower fan and discharges it into a room to heat the room. Furthermore, since the burner releases combustion gas into the room, it employs a full-stage combustion method to reduce NOx. Furthermore, since it is a burner of the all-primary combustion method, the temperature of the burner body increases dramatically. Therefore, the lower part of the burner body (mixing pipe part) is placed in a suction path different from the combustion gas suction path using the above-mentioned blower fan, and is separated from the combustion chamber.
is cooled with suction air. On the other hand, in order to adjust the burned calories, two burners are installed side by side, and one burner is burned when the calorie is low, and both burners are burned when the calorie is high. When a gap is created between the burners leading to the combustion chamber, the combustion flame is drawn through the gap due to the flow action (fJ pressure) of the cooling air sucked by the blower fan, and the cooling opening of the burner body There were problems with insufficient action and unstable burner combustion.

Purpose of the Invention By ensuring airtightness between the burners while absorbing thermal expansion between the burners due to high-temperature/low-temperature/stop switching of burners consisting of U-shaped split cylindrical bodies stacked in parallel,
The present invention provides a combustion device that prevents flame from flowing back into the burner body from the burner mouth surface due to negative pressure of a blower fan, improves the durability of the body, and stabilizes combustion.
The purpose is to prevent the scratching noise caused by the difference in thermal expansion between the seal presser plates and the squeaking sound of the seal presser plates.

Structure of the Invention In order to achieve the above object, the combustion device of the present invention has a body molded into a substantially U-shaped divided cylinder shape, and has flange surfaces around the entire circumference except for the suction port, and the flange surfaces in the longitudinal direction overlap in parallel. The two wooden burners, the support plate A and the support plate B installed in the groove formed between the flange surface of the two burners and the approximately U-shaped body, and the gasket, and the tip of the burner and the nozzle side. The seal holding plate has one end hooked on the support plate A, the other end passed through the slit hole of the support plate B, and a part of the longitudinal direction bent toward the packing, thereby creating an airtight seal between the sealers. do.

DESCRIPTION OF THE EMBODIMENTS This embodiment will be described below with reference to the accompanying drawings. FIG. 1 shows a gas hot air heater employing the combustion device of the present invention.

In FIG. 1, 1 is a main body base, 2 is an exterior case, 3 is a salt outlet, 4 is an operation switch, 5 is a temperature control knob, and 6 is an operation lamp.

In Figure 2, 7 is the same part of the gas control device such as a gas cock, and 8
9 and 10 are gas conduit pipes, and 9 and 10 have a body molded into a split cylinder with a substantially U-shaped cross section, and have flange surfaces 9a and 10a around the entire circumference except for the gas and air inlet portions, and are adjacent in the longitudinal direction. A large burner and a small burner are arranged side by side by overlapping the flange surfaces 9a and 10a, and 11 is a combustion chamber whose inner shell is in contact with a secondary combustion chamber 12, in which the periphery of the large burner 9 and small burner 10 is sealed.
Reference numeral 13 denotes a blower fan 1 which is partially located below the large burner 9 and the small purse 10, has a suction port, and is connected to the combustion chamber 11.
4 is a blower fan motor. A receiving plate is used to attach the nozzle 16 to the 15-piece burner 9 and the small burner 1o.
It is fixed to a large burner 9 and a small burner 10. 17 is an ignition electrode insulator for the large and small burners 9° and 10, and 18 is an ignition electrode.

In Figures 3 to 5, 19 is the large burner 9 and the small burner 1.
Support plate A, 22 with both ends bent in the same direction for reinforcement, tightened with pins 21 to lug plate A20 spotted at the tip of o.
23 is a string-like gasket fitted in a groove formed between the approximately U-shaped body of the large burner 9 and the flange surface 10a of the small burner 10; The support plate B124, which is barred in the same shape as the U-shaped body and whose bottom is bent into an L shape, touches the metal with the flange surface 10a of the small burner 10 and presses the string-like packing 22, and hooks one end on the support plate A19 to support the other end. Board B
Pass through the slit hole of 23 and insert a part of the longitudinal direction into the gasket 22.
This is a packing plate that is bent in the direction.

In the above configuration, when the temperature control knob is set to a position higher than the room temperature and the operation switch 4 is turned on, the operation lamp lights up and gas is supplied to the large burner 9 through the gas conduit 8 through the nozzle 16 by the action of the gas controller section 7. ．． While flowing into the small burner 10, primary air also flows due to the ejector effect.

On the other hand, discharge is started in the ignition electrode 18 in the ignition electrode insulator 17 and the large burner 9, and a flame is formed in the large burner 9 and the small burner 10 by combustion. The blower fan motor is also driven at the same time to draw in air from outside the exterior case 2, and the air that has passed through the combustion chamber 11 is mixed with the bypass air to cool the bodies of the large burner 9 and small burner 10 while cooling the blower fan 13. Warm air passes through the inside and is blown out from the hot air outlet 3.

In such a sequence, the flange 1 of the small burner 10 is touched while touching the flange surface 10a of the small burner 10.
The gasket 22 fitted into the groove formed between the body of the large burner 9 and the body of the large burner 9 is pressed down from above, and the gasket pressing plate 24 hooks one end onto the support plate A19 and leaves the other end freely within the slit hole of the support plate 823. The moving structure ensures airtightness between the burners while absorbing the difference in thermal expansion between the large burner 9 and the small burner 10 due to high-temperature-low-temperature-stop operation. Also, the flames from large burner 9 and small burner 10 are sent to blower fan 1.
This prevents the temperature rise of the U-shaped bodies of the large burner 9 and small burner 10 and stabilizes the combustion. 4J function prevents scratching noise and squeaking sound of the packing press plate.

Effects of the Invention As described above, the following effects can be obtained by the combustion apparatus of the present invention.

(1) Insert a gasket into the groove formed between the flange surfaces of the two burners and the approximately U-shaped body, and press the gasket while shining a metallic light on the flange surface to seal between the burners. Therefore, airtightness can be ensured while absorbing the difference in thermal expansion between the burners due to high temperature, low temperature, and stop operation.

(21 (11) prevents the flame of the burner from being drawn toward the blower fan from the gap between the burners, thereby preventing discoloration of the burner body due to temperature rise and improving durability.

Furthermore, combustion can be stabilized by reducing D O/CyOz.

(3) It is possible to prevent grinding noise due to the difference in thermal expansion between the burner and the packing holding plate and the squeaking sound of the packing holding plate.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a combustion device which is an embodiment of the present invention, Fig. 2 is a sectional view of essential parts of a combustion device which is an embodiment of the invention, and Fig. 3 is a perspective view of a combustion device which is an embodiment of the present invention. A bottom view of the burner section of a certain combustion device, FIG. 4 is a sectional view of the main part taken along the line AA in FIG. 3, and FIG. FIG. 6 is a right side view of a burner section of a combustion apparatus according to an embodiment of the present invention. 9...Large burner, 9a...°...flange surface, 1
0...Small burner, 10a...Flange surface, 19...Temporary support A122...Packing, 23...Support plate B. 24...Patsukin press plate. Name of agent Toshio Nakao and 1 other person
Figure 2 Figure f? //17' 7 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] It has a body molded into a roughly U-shaped split cylinder, and has two burners that overlap in parallel on the flange surface in the longitudinal direction, a gasket provided in the groove between the burners, and a gasket provided at the tip of the burner and on the nozzle side. A packing comprising a supporting plate A, a supporting plate B, and a packing pressing plate, one end of which is hooked on the supporting plate A, the other end of which is passed through a slit hole of the supporting plate B, and a part of the longitudinal direction is bent in the direction of the packing. A combustion device configured to ensure airtightness between burners using a presser plate.