JPS5933285Y2 - Noodle boiler - Google Patents

Description

[Detailed description of the invention] This invention relates to a noodle boiler for boiling noodles such as udon and soba.

In conventional noodle boilers of this type, the combustion gas from the burner placed below the boiler rises through the outer periphery of the boiler, so the rising combustion gas is at a high temperature, so a large amount of heat is wasted and dissipated. However, it had the disadvantage of low thermal efficiency.

In view of the above, the object of this invention is to provide a thermally efficient noodle boiler configured to preheat water by recovering heat from combustion gas, which was wasted in the past.

The structure of this invention will be explained below with reference to the illustrated embodiment.

The boiling pot 1 has a hemispherical shape with a flat part on a part of the bottom, and has an L-shaped flange at the upper end, and a lid 2 on the flange.
is placed.

A plurality of gas burners 3 are arranged below the boiling pot 1,
It is formed to be ignited by a pilot burner 4.

A small annular tank 5 is disposed so as to surround the group of gas burners 3, and the surface of the small annular tank 5 facing the boiling pot 1 forms a conical surface.

6 is a large annular tank, the inner peripheral wall of which is formed concentrically with the small annular tank 5, and an annular secondary combustion gas passage 7 formed between the outer peripheral wall of the small annular tank 5 and the outer peripheral wall of the small annular tank 5.

A flange holder 8 is provided around the upper surface of the large annular tank 6 along the inner circumferential wall, and the flange holder 8 abuts against the flange of the boiling pot 1 to hold the pot.

A primary combustion gas passage 9 is formed between the inner peripheral wall of the large annular tank 6, the conical surface of the small annular tank 5, and the boiling pot 1.

The small annular tank 5 and the large annular tank 6 are arranged vertically at a predetermined pitch on the circumference.
A plurality of them communicate with each other through communication pipes 10 arranged radially.

Inside the large annular tank 6, a heat exchanger 11 formed by a tube wound into a coil is disposed along its inner peripheral wall.A water supply pipe 12 is connected to the lower end of the heat exchanger 11, and a water supply pipe 12 is connected to the upper end. A hot water supply pipe 13 is connected to the hot water supply pipe 13, and a faucet 14 is connected to the upper end of the hot water supply pipe 13.
are connected to each other so that hot water can be supplied to the boiling pot 1.

An overflow drain pipe 15 is connected to the upper part of the large annular tank 6, and a lower drain pipe 16 having a stop valve is connected to the bottom of the large annular tank 6, and the lower drain pipe 16 is connected to the overflow drain pipe through a joint. It is formed to merge with 15.

A hole 18 for removably housing and holding a soup pot 17 is bored in the upper surface of the large annular tank 6, and this hole 18 also serves as a water supply port.

The outer peripheral wall of the large annular tank 6 is connected to a frame 20 via a heat insulating material 19.

Next, the operation of this invention will be explained.

The flame of the gas burner 3 heats the lower surface of the boiling pot 1, and the combustion gas generated from the flame heads obliquely upward through the primary combustion gas passage 9, heating the side surface of the boiling pot 1, and the conical surface of the small annular tank 5 and the large annular shape. Although the inner circumferential surface of the tank 6 is heated and the temperature of the combustion gas itself is lowered, it still flows downward in the secondary combustion gas passage T, during which time the large and small annular tanks 5 and 6 are heated. A part of the heat contained in the collected combustion gas is absorbed by the water in the large and small annular tanks, raising the water temperature.

Therefore, the temperature of the combustion gas when it exits the secondary combustion gas passage γ is much lower than the temperature of the combustion gas discharged into the atmosphere in a conventional noodle boiler.

Note that the temperature inside the large and small circumferential annular tanks is equalized by convection through the communication pipe 10.

The water supplied from the water supply pipe 12 is heated by the heat exchanger 11 and supplied to the boiling pot 1 via the hot water supply pipe 13 and the faucet 14.

The soup pot 17 is also heated by the hot water in the large annular tank 6.

In the above-described embodiment, the water in the large and small circumferential annular tanks is used as a heat medium, but it is also possible to directly supply this water to the boiling pot 1.

According to this invention, as mentioned above, the heat of the combustion gas, which was wasted in the past, is guided to the secondary combustion gas passage formed between the large and small annular tanks. Since the system is configured to heat water and utilize this heated water effectively, the overall thermal efficiency can be dramatically improved.

[Brief explanation of drawings]

The figures show an embodiment of this invention, with FIG. 1 being a plan view and FIG. 2 being a sectional view taken along the line A-0-A in FIG. 1...Boiling pot, 3...Gas burner (burner), 5...Small annular tank, 6...Large annular tank, 7...・Secondary combustion gas passage, 9...
-Second combustion gas passage.

Claims (1)

[Scope of utility model registration request] A burner is provided below the boiling pot, a small annular tank is provided surrounding the burner, a large annular tank communicating with the small annular tank is provided outside the small annular tank, and the boiling pot is connected to the large and small annular tank. A primary combustion gas passage through which combustion gas flows upward is formed between the small annular tank and the large annular tank, and a secondary combustion gas passage through which combustion gas flows downward is formed between the small annular tank and the large annular tank. A noodle boiler having a structure in which a gas passage and the secondary combustion gas passage are communicated with each other, and a heat exchanger is disposed in the large and small annular tank to supply hot water to the boiling pot.