JPH0419281Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a tea boiler.

(Prior art and its problems) A conventional boiler for tea manufacturing has a structure shown in FIGS. 5 and 6, for example. That is, 1 is a heavy oil burner, 2 is a cylindrical combustion chamber, and the combustion gas rises upward from the end of the combustion chamber 2, where it flows into three pipes 3 arranged parallel to the combustion chamber 2. It is separated and discharged into the smoke chamber 4. 6 is the combustion chamber 2 and the pipe 3...
In the water chamber in the space between the circumferential surface of the combustion chamber 2 and the boiler outer shell 5, water in the water chamber 6 is heated by heat exchange between the combustion chamber 2 and the circumferential surface of the pipe 3 and evaporates. Steam accumulates in the air chamber 7 and is led to a steaming device (not shown) via a steam dome 8. As described above, a combustion chamber and heat exchange pipes are installed inside the water tank.
The volumes of the water chamber 6 and air chamber 7 are extremely small.

Now, when the steam dome 8 is small or the air chamber 7 is narrow, when the steam is taken out, the water surface rises and the steam contains fine water droplets, resulting in so-called wet steam. In addition, when the water chamber 6 is small (the amount of water in the boiler is small), it has the advantage of being efficient and producing steam in a short time, but the steam pressure tends to fluctuate, and water droplets rise due to the bubbling phenomenon caused by boiling, resulting in dampness. The drawback was that steam was easily generated.

(Problem to be solved by the invention) For tea making, soft steam containing no water droplets and constant pressure steam without pressure fluctuations are desirable. For this purpose, it is necessary to have a large amount of water and a large air chamber, and the present invention attempts to provide such a boiler.

(Means for solving the problem) A water tank is provided in the upper part of the combustion chamber, and the combustion chamber is further surrounded by a water mantle, etc., and the water mantle, etc. and the tank are communicated to increase the heat transfer area and prevent convection. It is characterized by its promotion.

(Example) A first example will be described with reference to FIGS. 1 and 2. 10 is a heavy oil burner, 11 is a combustion chamber, 1
2 is a cylindrical tank installed horizontally above the combustion furnace 11, with a lower part 12a serving as a water chamber and an upper part 12b serving as an air chamber. A steam dome 13 is provided at the upper center of the tank 12. 14 is a steam outlet.

A water canopy 15 surrounds both sides and the bottom of the combustion chamber 11, and communicates with the lower part of the tank 12. 1
6 is a flue, which leads to the end of the combustion chamber 11 and connects to the tank 1.
2 and communicates with the smoke chamber 17. 18
is an economizer provided around the flue 16, which communicates with the water chamber 12a of the tank 12. Note that 19 is an outer shell, and a heat insulating material 20 is filled between the outer shell and the combustion chamber and flue.

(Operation of the first embodiment) Combustion gas from the heavy oil burner 10 passes through the combustion chamber 11, passes through the flue 16 connected to the upper part of the combustion chamber 11, and is discharged through the smoke chamber 17. At this time, the water in the water chamber 12a is heated by heat exchange between the upper and lower portions of the combustion chamber 11 and the economizer portion. It is heated by heat exchange to generate steam, and the steam accumulated in the air chamber 12b is sent to the tea making machine via the steam dome 13 and the steam outlet 14.

(Second Embodiment) FIGS. 3 and 4 show a second embodiment of the present invention.
In this example, a large number of water pipes 1 are provided at the bottom of the combustion chamber 11.
5a are installed horizontally, both ends of these water pipes 15a are connected by headers 15b, and the headers 15b at both ends are communicated with the tank 12 through riser pipes 15c.

(Operation of the second embodiment) Also in the case of this example, the combustion gas of the heavy oil burner passes through the combustion chamber 11 and is discharged from the back of the combustion chamber 11 through the flue 16 to the smoke chamber 17. During this time, the water pipe 15a is located at the lower part of the combustion chamber 11, and the riser pipe 1 is installed at the front and rear of the combustion chamber 11.
5c and the bottom of the tank 12 through heat transfer, and at the same time, convection is favorably promoted by the riser pipe 15c, resulting in efficient heating.

(Effect of the invention) The tank 12 is provided above the combustion chamber separately from the combustion chamber, so that a large amount of water can be retained and a large air chamber 12b can be secured. Therefore, water droplets are not included in the steam, and since the air chamber is large, soft steam can be sent to the tea maker with stable steam pressure. The tea made with this steam has a bright color and can improve the quality of the product.

Since the tank is placed above the combustion chamber and is further surrounded by a water canopy or water pipe leading to the tank and a riser pipe, the heat transfer property is excellent, and the thermal efficiency is extremely good due to the excellent convection effect.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken from FIG. FIG. 3 is a sectional view of the second embodiment. FIG. 4 is a cross-sectional view taken from FIG. Figure 5 shows a conventional tea boiler. FIG. 6 is a cross-sectional view of FIG. In the figure: 1...Heavy oil burner, 2...Combustion chamber, 3...Pipe, 4...Smoke chamber, 5...Outer shell (of the boiler), 6...Water chamber, 7...Air chamber, 8... ...Steam dome, 10...Heavy oil burner, 11...Combustion chamber,
12...Cylindrical water tank, 12a...Water chamber, 12
b... Air chamber, 13... Steam dome, 14... Steam outlet, 15... Water mantle, 16... Flue, 17... Smoke chamber, 18... Economizer, 19... Outer shell, 2
0...Insulation material.

Claims (1)

[Claims for Utility Model Registration] 1. Consisting of a combustion chamber 11 and a water tank 12 which is provided horizontally above the combustion chamber 11 and communicates with a steam outlet 14 through a steam dome 13 at the top, and the combustion chamber 11 has one end. A heavy oil burner 10 is installed at one end, and a flue 16 is installed symmetrically on both sides of a water tank 12 at the other end.
Further, the flue 16 is connected to the heavy oil burner 1.
0 into the smoke chamber 17, and the combustion chamber 11 is connected to the tank 12 on both sides and at the bottom.
A tea boiler characterized in that the flue 16 is surrounded by an economizer 18 communicating with the tank 12 at the top, bottom and sides thereof. 2. The tea manufacturing boiler according to claim 1, which is a registered utility model, characterized in that a plurality of water pipes 15a are provided in the lower part of the combustion chamber 11, and the water pipes 15a and the water tank 12 are communicated with each other through a riser pipe 15c.