JPS609636Y2 - hot water boiler - Google Patents

Description

[Detailed description of the invention] This invention is a hot water boiler in which a large number of smoke pipes communicating from the combustion chamber to the smoke chamber are inserted into the water chamber. This invention relates to a device that can easily remove dust and soot.

Conventionally known boilers have a large number of smoke pipes arranged inside the water chamber, and the smoke pipes are distributed evenly within the water chamber in order to widen the heat transfer area, but the combustion gas passes straight through the smoke pipes. Because of the structure, it is difficult to say that sufficient heat transfer is being carried out.Furthermore, the smoke tubes, which are heat-resistant and watertightly built into the center of the boiler, are difficult to disassemble easily; The only way to remove the soot and dust is to disassemble at least a portion of the smoke pipe and use a separate cleaning tool, so it has been difficult to clean it to maintain effective heat transfer.

The present invention was made to eliminate such defects and provide a highly efficient hot water boiler, by causing combustion gas to convect in the lower combustion chamber, meanderingly guided in the smoke pipe in the ice chamber, and further in the upper combustion chamber. The smoke chamber is guided and discharged from the front to the rear to increase sufficient heat transfer effect, and fins that meander and guide the combustion gas within the smoke tube are installed at the top of the smoke tube group so that they can be opened and closed. It is characterized by having a structure in which it can be directly inserted and removed from the outside through the lid of the smoke chamber for easy cleaning, and can be locked to an iron lid.

Hereinafter, the present invention will be further explained in detail with reference to the drawings shown as an embodiment.

In the drawing, 1 is a hot water boiler, 2 is a combustion chamber disposed in the lower half of the hot water boiler 1, and an outlet 10a of a burner 10, which will be described later, is inserted into the front center of the combustion chamber 2. There is a through hole 2a, and a smoke pipe 5, which will be described later, is located near the front of the top surface.
A plurality of holes 2b connected in a group are formed.

Reference numeral 3 denotes an ice chamber, which includes the periphery of the side surface of the combustion chamber 2 and the middle part of the hot water boiler 1, and is provided with a water intake port 3a at the bottom and a hot water outlet 3b at the top.

Reference numeral 4 denotes a smoke chamber, which is provided at the top of the hot water boiler 1 above the water chamber 3, and has a plurality of similar holes 4a at positions corresponding to the plurality of holes 2b of the combustion chamber 2 on the front side of its bottom. Further, an openable and closable lid 6 having, for example, a threaded engagement hole 7 formed therein is disposed at a corresponding position on the top surface, and an exhaust pipe 4b is provided on the rear side of the top surface. ing.

5 indicates each of the plurality of corresponding holes 2b of the combustion chamber 2 and the smoke chamber 4;
It is a smoke pipe connected and arranged between t4a.

Reference numeral 8 indicates a fin, and reference numeral 9 indicates an opening/closing stopper in which the fin 8 is integrally extended downward, and the fin 8 is inserted into the smoke pipe 5 and spirals in the pipe axis direction so as to contact or be close to the inner wall of the smoke pipe 5. The opening/closing stopper 9 is configured to be screwed into the engagement hole 7 with the fin 8 inserted into the smoke pipe 5.

According to the hot water boiler 1 of the present invention constructed as described above, the combustion gas combusted in the combustion chamber 2 rises through the smoke pipe 5, but the smoke pipe 5 is full of S. Since the fins 8 are inserted into the fins, the combustion gas is guided in a meandering manner along the fins 8, and the residence time in the flue pipe 5 becomes longer. The heat transfer effect will be maximized.

If soot and dust accumulates inside the smoke pipe 5 during use, the on-off valve 9 engaged with the upper part of the smoke chamber 4 is rotated,
Just by removing it, the fins 8 that are integrally formed with the opening/closing stopper 9 will cleanly scrape off the soot and dust inside the smoke pipe 5, making it possible to clean the inside of the smoke pipe 5 with an extremely simple and convenient operation. The boiler 1 can be maintained cleanly and with good thermal conductivity at all times, and all of these effects, along with the heat transfer effect due to the meandering, can be achieved by a single configuration, making the mechanism of the boiler 1 simple and rational.

The inside of the smoke chamber 4 can be easily cleaned by opening the lid 6 as shown by the chain line in the figure.

Furthermore, the fins 8 have the effect of not discharging incompletely burned or unburned gas into the smoke chamber 4 or the exhaust stack 4b, and achieve complete combustion within a relatively long smoke pipe residence time. If the burner 10 is arranged only in the front, the fuel supplied by the burner 10 will be sufficiently convected in the combustion chamber 2 as shown by the arrow A, and will be completely combusted. The interior of the icebox is heated uniformly, the rate of incomplete combustion or unburned gas being induced into the smoke pipe 5 is reduced, and the rate of adhesion of soot and dust is also reduced, thereby maximizing the efficiency of heat transfer to the icebox. be able to.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and for example, the group of smoke pipes 5 is not necessarily limited to the upper side of the combustion chamber 2, and may be located closer to the rear side.
It is most preferable for the fins 8 to have a continuous spiral shape as in the embodiment for guiding the combustion gas and cleaning the inside of the smoke pipe. It goes without saying that other configurations for guiding the combustion gas in a meandering manner, such as one in which fragmented fins are arranged in a staggered manner, may also be used. It goes without saying that the fin structure is not limited to the above, but may also be secured by friction fitting, and these fin structures can also be applied to hot water boilers other than the above-mentioned types.

As described above, according to the hot water boiler of the present invention, a fin that can be easily inserted and removed from the outside of the smoke chamber is provided on the smoke pipe that is inserted into the water chamber and communicates with the combustion chamber, thereby guiding the combustion gas in a meandering manner. As a result, the heat transfer area is effectively widened and the heat transfer efficiency to the ice chamber is extremely improved.Also, the soot and dust that accumulates in the smoke pipe can be easily removed, making it easy to maintain good heat transfer efficiency in the smoke pipe at all times. You can let
Moreover, by keeping the combustion gas within the residence time in the smoke pipe, it is possible to achieve complete combustion without discharging incomplete combustion or unburned gas to the outside, so it has the great feature of preventing pollution. In addition, by arranging the smoke pipes in a concentrated manner in the direction in which the burners are installed in the combustion chamber, the combustion gas in the combustion chamber is convected and burns almost completely, increasing combustion efficiency and preventing incomplete contact with the smoke pipes. It also has the feature of reducing the rate of inducing combustion or unburned gas, thereby reducing the adhesion of soot and dust.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view of a hot water boiler as an embodiment of the present invention. 1 is the boiler, 2 is the combustion chamber, 3 is the water chamber, 4 is the smoke chamber,
5 is a smoke pipe, 7 is an engagement hole, 8 is a fin, and 9 is an opening/closing stopper.

Claims (1)

[Scope of utility model registration request] In a hot water boiler in which a large number of smoke pipes communicating from a combustion chamber to a smoke chamber are inserted into a water chamber, the combustion chamber is disposed at the bottom of the boiler, the smoke chamber is disposed at the top of the boiler, and the smoke chamber is disposed in front of the combustion chamber. A fuel injection burner is arranged in the section facing rearward, and the front side between the combustion chamber and the smoke chamber is communicated with a plurality of smoke pipes, and the smoke chamber is located at an upper position where the group of smoke pipes is arranged. A lid that can be opened and closed is provided, and an exhaust port is provided on the rear side, and a fin is provided in the smoke pipe to guide the combustion gas in a meandering manner and whose outer peripheral end is in contact with or close to the inside of the smoke pipe. A hot water boiler, characterized in that the fins are arranged so that they can be inserted and removed directly from the outside through the closed lid and can be locked to the iron lid.