JPS6234081Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a horizontal furnace-tube boiler, and specifically aims to provide a boiler that can simultaneously generate three types of thermal fluids: steam, hot water, and hot air.

Generally, in a horizontal furnace tube boiler, multiple groups of smoke tubes are placed inside the boiler barrel to form multiple passes within the boiler barrel, thereby increasing the heat transfer area and increasing boiler efficiency. In a conventional horizontal fire tube boiler, the furnace tube and smoke tube are all submerged in canned water, so the mass of the canned water, which is the heat receiving body, is large, making it difficult to heat the canned water to the steam generation temperature. The problem was that it took a long time to complete the process and increased fuel consumption. In addition, since conventional boilers do not have the ideal ability to heat air, when using this boiler for heating, it is necessary to extract steam or hot water,
The steam is guided into a radiator placed inside the room, and the room is heated through heat exchange. However, in this case, since the air was only heated, there was a problem that the indoor air became dry.

Therefore, in a vertical boiler, a smoke chamber divided into three chambers was placed at the top of the furnace cylinder, and the upper chamber and lower chamber were connected by a smoke pipe, and air was introduced into the intermediate chamber to form hot air. something is proposed. However, in this case, the volume of the smoke chamber cannot be increased, so the effect of heating the air is small, and
Since combustion gas is used as a heating source for the air, there is a problem in that when combustion is stopped, the air cannot be heated.

The present invention has been proposed in view of this point, and is a horizontal furnace tube boiler in which a flue is arranged in the upper part of the boiler body to run parallel to the furnace tube, and a water pipe is arranged inside the flue. , this water pipe is communicated with a water chamber in the boiler body, and fountain pipes led out from the water pipe at regular intervals are opened outside the upper surface of the flue,
The gas flowing in the flue heats the canned water flowing in the water pipe, and the canned water spouted from the fountain pipe comes into contact with the hot outer surface of the flue, thereby effectively converting the exhaust gas and canned water. In addition, a ventilation pipe is installed below the opening position of the fountain pipe in the upper part of the boiler body, and a perforated buttful plate is installed above the ventilation pipe to reduce the temperature of the ejection canister. It is characterized in that the air flowing through the ventilation pipe is heated by bringing water into contact with the outer surface of the ventilation pipe.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a partially cutaway perspective view, showing that a furnace cylinder 2 is disposed in the lower half of the boiler cylinder 1 placed horizontally over almost the entire length of the boiler cylinder 1, and a large number of furnace cylinders surround this furnace cylinder. A smoke pipe 3 is provided. This smoke pipe 3 communicates between a fire bag 4 formed at the tip of the furnace tube 2 and a smoke chamber 5 arranged at the end of the boiler barrel 1 on the side where the furnace tube enters so as to surround the furnace tube 2. Combustion gas generated in the firebox 2 flows from the firebox 4 through the smoke pipe 3 into the smoke chamber 5.

A flue 6 led out from the smoke chamber 5 is arranged in the upper part of the boiler shell 1 in parallel with the furnace barrel 2. It protrudes outward and is connected to the air exhaust passage 8. flue 6
Two water pipes 9 are arranged inside the pipe 9, and each of the water pipes 9 closes the end face on the smoke chamber 5 side, and the other end is raised outside the boiler body 1 to connect the flue 6. It is connected to a heated water manifold 10 located on the upper side.

The heated water manifold 10 is connected to the lower part of the water chamber 1a in the boiler body 1 via a circulation pump 11, and is adapted to send heated canned water from the heated water manifold 10 to the water pipe 9. A large number of fountain pipes 13 stand up from the upper surface of the water pipe 9 at regular intervals, and the fountain pipes 13 are opened outside the upper surface of the flue 6, and the canned water spouted from the fountain pipes 13 is sent to the flue 6. When brought into contact with the outer surface, it exchanges heat with the combustion gas flowing in the flue 6 and promotes evaporation.

Boutful plates 15 made of perforated plates are fixed to the left and right side walls 14 of the flue 6 along the longitudinal direction of the flue, and three ventilation pipes 16 are arranged below each of the buttful plates 15. Half of the water chamber 1
It is placed so that it can be submerged in water. As shown in FIG. 2, this ventilation pipe 16 includes a ventilation pipe 16a that connects an inlet chamber 17 formed on the outside of the rear head plate 7 and an air chamber 18 formed in the smoke chamber 5, and an air chamber 18 and the outside of the rear head plate 7. The air pipe 16b communicates with the outlet chamber 19 formed in
While returning to the water, the water is heated by the hot water spouted from the fountain pipes 13 and scattered by the buffal plate 15.

The water chamber 12 is connected to a water source via an automatic water supply mechanism 21 consisting of a ball tap valve 20.
The water level in 2 can always be kept constant.

A burner 22 is attached to the front end of the furnace tube 2, and the burner 22 is designed to automatically extinguish the water when the temperature of the canned water in the water chamber 12 reaches 80°C, and to automatically ignite when the temperature drops to 50°C. controlled. Water chamber 12
A filter 24 is interposed in the hot water supply path 23 for taking out the hot water inside.

In the figure, 25 is a steam outlet, 26 is a safety valve,
27 is a liquid level gauge, 28 is a drain hole, and 29 is a smoke pipe cleaning port.

As explained above in the embodiments, in the boiler of the present invention, canned water is supplied to the water pipe installed in the flue, and the canned water is circulated by spraying the canned water from the upper surface of the flue. Because of this, the canned water in the water pipe can be heated by the high-temperature combustion exhaust gas flowing in the flue, and the surface of the flue wall, which is heated by the high-temperature combustion exhaust gas flowing in the flue, can be heated. Since the mass of the flowing sewage that comes into contact is small, it is possible to effectively vaporize the sewage, and the heat of the combustion exhaust gas, which was previously wasted, can be used effectively, increasing the boiler efficiency to over 95%. Can be done.

Furthermore, in this invention, a ventilation pipe is arranged along the flue in the lower boiler body upper space depending on the position of the canned water fountain, and the canned water flowing down the ventilation pipe comes into contact with the ventilation pipe. The air flowing inside the tube can be heated by the high-temperature steam that accumulates in the upper part of the boiler body and the high-temperature flowing water heated on the flue surface, and can be taken out as warm air, and the ventilation tube is parallel to the furnace tube. Because of its location, it can be formed over a long path, so the temperature of the air flowing through the ventilation pipe can be sufficiently raised, and there is no need to install a special heating device to generate hot air, which reduces equipment costs. In addition to reducing fuel consumption, running costs can also be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway perspective view, FIG. 2 is a cross-sectional plan view of the main part, and FIG. 3 is a longitudinal sectional front view of the main part. 1...Boiler body, 2...Furnace cylinder, 3...Smoke pipe, 4
... Fire bag, 5 ... Smoke chamber, 6 ... Flue, 9 ... Water pipe, 11 ... Circulation pump, 12 ... Water chamber, 13 ...
...Fountain pipe, 15...Batsuful plate, 16...
Ventilation pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Furnace tube 2 is disposed in horizontally placed boiler shell 1 over almost the entire length of boiler shell 1, and a fire bag is installed at the tip of furnace tube 2 located inside boiler shell 1. At the same time, a furnace cylinder 2 is installed at the end of the boiler shell 1 on the side where the furnace cylinder enters.
A smoke chamber 5 is formed surrounding the furnace cylinder 2, and the firebox 4 and the smoke chamber 5 are connected to each other by a large number of smoke pipes 3 arranged to surround the furnace tube 2, and the smoke led out from the upper part of the smoke chamber 5. The channel 6 is arranged parallel to the furnace tube 2, and the flue 6
A water pipe 9 with one end closed is disposed inside the boiler body, and this water pipe 9 is communicated with a water chamber 12 in the boiler body via a circulation pump 11.
Fountain pipes 13 led out at regular intervals are opened on the upper surface of the flue 6, and a ventilation pipe 16 is arranged parallel to the flue 6 in the upper part of the boiler body 1 below the opening position of the fountain pipe 13 to This horizontal furnace-tube smoke tube boiler is characterized in that the upper side of the tube 16 is covered with a buff-full plate 15 made of a perforated plate so that the heated water spouted from the fountain tube 13 comes into contact with the surface of the ventilation tube 16. 2. Scope of Claims for Utility Model Registration The horizontal fire tube boiler described in claim 1, in which the ventilation pipe 16 is arranged so as to be folded back within the boiler shell 1.