KR910002175Y1 - Hot water heater used burner apparatus - Google Patents

Abstract

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Description

Hot water dispenser with forced blow burner

1 is a schematic cross-sectional view of a forced air type hot water dispenser.

2 is a perspective view of the main portion thereof.

3 is a perspective view of the combustion plate fixing means.

* Explanation of symbols for main parts of the drawings

1: burner plate burner 2: heat exchanger

3: case for teapot 4: combustion plate

5: controller 6: frame load

10: combustion box 43: fireproof frame

45: fixing member 50: control circuit

51: safety valve 53: control valve

The present invention relates to a scrubber that improves the durability of the fixing member of the forced-gas gas burner (continuous plate burner).

Heaters such as hot water heaters and wooden baths are welded and connected with both ends of plate fins on the inner wall of the combustion box, which is a combustion chamber.In addition, the gas is usually fixed to the bottom of the heat exchanger by means of fixing members. The burner is arranged.

In the prior art, there is less fear that the fixing member will touch the flame, and accordingly, there is little need to consider heat resistance and durability.

However, in recent years, in order to make the apparatus compact, a scrubber using a forced blow burner which blows air with a blower and performing high load combustion is desired. In this case, the fixing member typically has a portion exposed in the combustion chamber and a flame that is extended by high load combustion is returned, so that the exposed portion comes into contact with the flame and becomes a high temperature of about 1,500 ° C. Even when used, sufficient durability could not be obtained.

In particular, in the case where all primary air combustion is carried out completely with only primary air in a combustion plate burner provided with a large number of small holes in a plate made of heat-resistant material, the flame is increased and the combustion plate itself is also increased. Due to the high temperature, durability of the fixing member becomes a problem.

An object of the present invention is to provide a fixed structure of a burner that can obtain a long durability of the support member even in a scorching machine that performs such high load combustion.

In order to achieve the above object, the water purifier of the present invention has a hot water exchanger having a forced draft burner installed in a combustion box through a fixing member and a fin group disposed above the burner and in contact with the inner wall of the combustion box. In the rain machine, the fixing member adopts a configuration including a side wall portion which supports the burner and is in close contact with the wall surface of the combustion box. The fixing member fixing the burner is in direct contact with the wall of the combustion box, so that heat is quickly transferred to the fins of the heat exchanger through the combustion box, so that the fixing member is kept at a low temperature and thus can be used permanently.

1 to 3 show the instantaneous gas scrubber of the scrubber using the forced blow burner of the present invention.

This scrubber is a combustion box 10 having an internal combustion chamber and a primary air combustion type that completely burns only with primary air, and a combustion plate type that is a forced-air gas combustion device that burns in the combustion box 10. A heat exchanger (2) having a burner (1), a plate fin group (21) and a water pipe (22) arranged at an upper portion of the combustion box (10) and welded at both ends to an inner wall of the combustion box, and the burner (1). ) And a scrubber case (3) having an outside air inlet (31) installed at a side wall summation and a control device (5) of the burner (1).

The combustion box 10 has a rectangular cross section and has an exhaust port 10a connected to an exhaust pipe 11 at an upper end thereof and an opening at a lower end thereof, and a mixing box having an internal mixing chamber 1A of fuel gas and air. (14) is provided to block the lower opening. On the flange 12 installed at the upper end of the mixing box 14, a fire extinguisher group consisting of small holes penetrating back and forth, for example, is installed in a matrix shape and made of a fireproof insulating material such as an electrically insulating ceramic sintered body. The burner plate 4 is mounted, and the mixing box 14 is provided with a blower 13 for supplying air and a gas supply pipe 17 having an injection port 15 near the outlet of the blower. (1) is configured.

The fire extinguisher group of the combustion plate 4 is composed of various kinds of small holes 4a, 4b, 4c by varying the air resistance by means of a difference in cross-sectional area, and the like, and suits the frequency of flame generated in each fire extinguisher. Dispersion is prevented so as to prevent generation of noise due to resonance with the combustion box 10 or the exhaust cylinder 11.

As shown in FIG. 3, the fixing of the combustion plate 4 is formed separately from the combustion plate 4 and has an L-shaped cross section, and the peripheral edge 4A of the upper surface of the combustion plate 4 and A ceramic fireproof frame 43 supporting the outer circumferential side surface 4B is fitted to the upper edge of the combustion plate 4, again formed by a stainless steel plate, and tightly fitted to the outer circumferential side wall of the fireproof frame 43. 45A of extension parts, and the stop plate part 45B which extends inward from the upper end of this side plate part 45A, and stops the upper surface of the said fireproof frame 43, and extends outward from the lower end of the said side plate part 45A. The upper surface and the side surface of the fireproof frame 43 are supported by the frame-shaped fixing member 45 formed of the flange 45C, and the side plate portion 45A is fitted to the lower end of the combustion box 10 and simultaneously flanged. 45C is a flange 10B installed at the lower end of the combustion box 10 and the flange of the mixing box 14 ( It is sandwiched between 12 and coupled by bolts 19.

In addition, the fire frame 43 may be formed integrally with the combustion plate 4, but is preferably formed separately as in this embodiment in order to improve the thermal shock resistance.

The control device (5) is a frame rod (6) consisting of a pair of electrodes provided on the upper surface of the combustion plate (4) to detect the presence or absence of the flame of the burner (1), a safety valve installed in the gas supply pipe (17) (51) and the flow control valve 53, the two-pole ignition device (55, 57), which is an ignition device provided on the upper surface of the combustion plate (4) and the safety valve (51) by the operation of the operation means not shown ), The flow control valve 53, the ignition device (55, 57) and the motor (M) of the blower 13, and at the same time when the frame rod 6 detects misfire or ignition miss the safety valve (51) Is provided with a control circuit 50 for generating an output that automatically closes.

In the scrubber, the flame returns during the high-load combustion of the burner 1, so that the stop plate 45B of the fixing member 45 touches the flame, and the inner surface 43A of the fireproof flame 43 is also reddened. However, since the heat is smoothly transferred in the order of the side plate portion 45A → the combustion box 10 → the plate fin group 21 → the water pipe 22 of the heat exchanger 2, the stopping plate portion 45B is also very small. Since it does not become a high temperature, it obtains durability long enough for practical use.

In addition, the present invention can of course be applied to a scrubber using a forced blow burner other than the combustion plate burner.

Claims (3)

Heat exchanger having a forced blow burner 1 installed in the combustion box 10 via a fixing member 45 and a fin group disposed above the burner 1 and disposed in contact with the inner wall of the combustion box 10. (2), wherein the fixing member (45) is provided with a side plate portion (45A) supporting the burner (1) and in close contact with the wall surface of the combustion box (10). The feature of the bath. 2. The burner (1) according to claim 1, wherein the burner (1) is a combustion plate burner formed by providing a plurality of small holes in a plate made of a heat-resistant material, and the fixing member (45) has a frame shape for supporting the outer edge of the combustion plate (4). Tangerine, characterized in that to form. 3. The scrubber according to claim 2, wherein an outer edge of the combustion plate (4) is formed by a ceramic fireproof frame (43) separate from the combustion plate.