JPS6139244Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a boiler.

Fire tube boilers shown in FIGS. 1 and 2 have been known as conventional boilers.

This has a structure in which a burner furnace 1 is provided at the bottom, a water chamber 3 through which a smoke pipe group 2 passes is provided above it, and a chimney 4 is further provided above it. Here, the combustion exhaust gas is exhausted from the furnace 1 through the smoke pipe group 2 and into the atmosphere from the chimney 4, while water is discharged from the water chamber 3 through the water supply port 5 provided in the lower part of the side of the water chamber in communication with the water chamber 3. The hot water enters the interior, rises while receiving heat from the combustion exhaust gas through the smoke pipe group 2, and is drained from the hot water inlet 6 provided on the top surface of the water chamber in communication with the water chamber 3.

However, in this case, it was difficult to bleed air from the upper part of the water chamber, and air accumulated in the upper part of the water chamber, causing corrosion from this air reservoir. In addition, since the smoke pipe group 2 is a straight pipe, the residence time of the combustion gas is short, and the heat exchange area is small, resulting in poor heat exchange efficiency.If these drawbacks are to be overcome, the number of smoke pipes must be increased. However, this has the disadvantage that the device becomes larger and heavier.

Therefore, the present invention is an attempt to solve the above-mentioned drawbacks.The burner nozzle is installed outside the center of the furnace, the inner cylinder side is formed into a bellows shape, and the inner cylinder side is passed through the outer cylinder side. Install the chimney,
Furthermore, the gap between the inner cylinder and the outer cylinder is used as a liquid passage, and the outer cylinder is connected to the liquid passage to provide a water supply port and a hot water supply port, and the center of the outer cylinder head is connected to the liquid passage to provide air. The aim is to provide a boiler equipped with a vent pipe.

The following is a description of the embodiments shown in FIGS. 3 to 7.

Reference numeral 7 designates a cylindrical furnace, and a cylindrical burner nozzle 8 is attached to the outside of the center of the furnace, the burner nozzle 8 passing through the furnace to the inner surface of the furnace and having an obliquely cut tip 8a. Although not shown here, the base end portion 8b of the burner nozzle is attached to the burner body. Reference numerals 9 and 10 are stainless steel inner and outer cylinders installed on the furnace 7, with the inner cylinder side surface 9a formed in a bellows shape, and the inner cylinder lower part 9b directed toward the outer cylinder.
Then, bend it horizontally and place the tip edge on the inner surface 1 of the side surface of the outer cylinder.
0a and then welded to form the inner tube 9 and the outer tube 10 integrally, and to form a water passage 11 in the gap between the inner tube 9 and the outer tube 10. In addition, the inner cylinder upper surface part 9
A cylindrical body 12b is connected to the side surface 12a of the chimney c, and a cylindrical chimney 12 with a lid is connected to the head 12c. Here, the cylindrical body 12b of the chimney 12 is fixed to the outer cylinder side surface 10b by welding the penetrating portion after passing through the outer cylinder side surface 10b. 13, 14, 15 are water passages 1
A hot water inlet, a water inlet, and a drain are provided on the side surface 10b of the outer cylinder so as to communicate with the upper and lower ends of 1, respectively.
Reference numeral 6 denotes an air vent pipe provided at the center of the outer cylinder head 10c formed in an arc shape. Reference numerals 17 and 18 denote a thermometer and a thermostat which are connected to the liquid passage 11 and are provided on the side surface 10b of the outer cylinder.

Note that the lower part of the outer cylinder 10d is removably attached to the outer circumferential surface 7c of the furnace with screws 19, so in case of an emergency, the inner cylinder 9 and outer cylinder 10, which are integrally formed, should be removed with these screws. By removing 19, it can be separated from the furnace 7. Furthermore, if the inner cylinder 9 is immersed in a molten aluminum bath to form an aluminized layer, corrosion resistance and heat resistance can be further improved. Furthermore, the width and depth of the bellows on the side surface of the inner cylinder can be easily changed according to conditions.

The water supplied from the water supply port 14 to the liquid passage 11 by a pump or the like passes along the bellows outer surface 9d on the side surface of the inner cylinder, receives heat from the combustion exhaust gas through the bellows, and partially reaches the inner surface of the outer cylinder. The water flows down along the water pipe 10a and rises while causing convection, that is, while producing an effect of uniformizing the water temperature in the water liquid passage 11, and is drained from the hot water supply port 13. On the other hand, the combustion exhaust gas is introduced into the furnace 7 through the burner nozzle 8, and the bellows inner surface 9e on the side of the inner cylinder
The water passage 11 rises while passing along the
After giving heat to the supplied water, it is discharged into the atmosphere from the chimney 12.

As explained above, this design has a combustion chamber inside the inner cylinder, a water chamber between the outer and outer cylinders, an air vent pipe at the top of the water chamber, a water supply port at the bottom of the water chamber, and a hot water supply port at the top of the water chamber. A cylindrical furnace in which the lower ends of the inner cylinder and outer cylinder are placed and communicated through an opening with the same diameter as the lower end of the combustion chamber in the inner cylinder, in a boiler in which the inner cylinder is formed into a bellows shape. and a burner nozzle that is attached tangentially to the furnace and blows flame injected from the burner body tangentially into the furnace;
It is arranged in a horizontal L-shape in the water chamber between the top of the outer cylinder and the top of the inner cylinder, and communicates with the combustion chamber at the top of the inner cylinder, and
Consisting of a chimney that penetrates the peripheral wall of the outer cylinder and communicates with the outside, and a hot water inlet that leads out from the water chamber above the top of the inner cylinder, the flame blown tangentially into the furnace from the burner nozzle flows through the combustion chamber. It is raised along the inner wall surface of the inner cylinder and passes through the upper part of the water chamber where the hot water supply port is located in a horizontal L shape through the chimney to exchange heat with the water in the water chamber. The combustion gas can flow in sufficient contact with the annular folds on the inner cylinder wall, and thermal efficiency can be improved by increasing the surface area due to the bellows shape and increasing the residence time in the combustion chamber. In addition to being heated over the entire length of the cylinder, the hot water that is further heated in the sideways L-shaped chimney can be taken out from the hot water supply opening. In particular, the flame is tangentially blown into the cylindrical furnace by a burner nozzle against the annular folds extending over the entire length of the bellows-shaped inner cylinder, and is raised along the inner wall surface of the inner cylinder, which is the combustion chamber. In combination with this, the advantages of the bellows-shaped inner cylinder can be effectively utilized.
In addition, by making the chimney horizontally L-shaped, combustion gas can remain in the combustion chamber for a long time, and the effective heat exchange area can also be increased with respect to the height of the upper part of the water chamber. There is.

[Brief explanation of drawings]

Figure 1 shows a conventional fire tube boiler.
FIG. 2 is a sectional view taken along the line AA in FIG. 1. Figure 3 is a front view of the boiler according to the present invention, Figure 4 is a right side view of Figure 3, Figure 5 is a sectional view of Figure 3, and Figure 6 is a plan view of the furnace in Figure 3. , FIG. 7 is a front view of FIG. 6. 7... Furnace construction, 8... Burner nozzle, 9... Inner cylinder, 9a... Inner cylinder side surface, 9c... Inner cylinder top surface, 9
e... Bellow inner surface on the side of the inner cylinder, 10... Outer cylinder, 1
0b...Outer cylinder side, 10c...Outer cylinder head, 11...
...Water passage, 12...Chimney, 13...Hot water inlet, 1
4...Water supply port, 16...Air vent pipe.

Claims (1)

[Scope of utility model registration request] The inner cylinder is a combustion chamber, the space between the outer and outer cylinders is a water chamber, an air vent pipe is installed at the top of the water chamber, a water supply port is installed at the bottom of the water chamber, a hot water supply port is installed at the top of the water chamber, and the inner cylinder is shaped like a bellows. In the formed boiler, the lower ends of the inner cylinder and the outer cylinder are placed, and a cylindrical furnace is connected through an opening with the same diameter as the lower end of the combustion chamber in the inner cylinder, and a cylindrical furnace is installed, which is connected tangentially to the furnace. The burner nozzle is attached to the burner body and blows the flame injected from the burner body into the furnace in a tangential manner, and the burner nozzle is arranged in a horizontal L shape in the water chamber between the top of the outer cylinder and the top of the inner cylinder, and the flame is blown at the top of the inner cylinder. It consists of a chimney that communicates with the chamber and communicates with the outside through the peripheral wall of the outer cylinder, and a hot water supply port that leads out from the water chamber above the top of the inner cylinder, and hot water is blown tangentially into the furnace from the burner nozzle. The flame is raised along the inner wall surface of the inner cylinder that constitutes the combustion chamber, and passed through the upper part of the water chamber where the hot water supply port is located in a horizontal L shape through the chimney to exchange heat with the water in the water chamber. A boiler characterized by being made to