JPS5831926B2 - steam generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steam generator capable of stably supplying a certain amount of steam when steaming processed food raw materials, and also supplying steam after removing excess moisture from the steam. .

When steaming processed food ingredients such as rice and beans, especially brewing ingredients, uniform steaming determines the quality of the resulting product.

By the way, when the steam generated in the boiler is directly introduced into the steamer, the steam pressure is high, so the steam escapes to the top through the gaps between some of the raw materials, and has the disadvantage that it does not reach all of the raw materials.

To solve this problem, steam generated in a boiler is introduced into a heat exchanger, and the heat exchanger boils the water again to generate steam at a pressure slightly higher than normal pressure, which is then sent to the steamer.

In this case, the water in the heat exchanger decreases as steam is generated, so water must be replenished.

However, when cold water is poured into the heat exchanger, the temperature of the water drops and the steam that was previously generated stops, resulting in so-called steam irregularities that are fatal to the quality of processed food ingredients. , improvement in this respect has been desired.

In some cases, reduced pressure may occur in the heat exchanger, resulting in damage to the heat exchanger.

Furthermore, when steaming raw materials for brewing, it is necessary to reduce the moisture content of the steam, since steam with a high moisture content imparts excessive moisture to the raw materials, which is unfavorable to the quality of the product.

Regarding this point, conventional devices have been used to pass hot air between the hot water level in the heat exchanger and the steam outlet, or to install corrugated pipes, through which hot water is passed, and when the steam passes between the corrugated pipes. There are things that remove excess water.

However, both devices have the disadvantage that the heat exchange device itself becomes large.

The present invention solves these drawbacks all at once, by providing a support plate larger than the inner diameter of the tank body with a steam communication hole, and forming a cylindrical body with a vapor communication hole provided in the lower surface of the support plate. , a baffle plate in which the lower end opening of the cylindrical body is joined to a cut part of a conical cut plate having a diameter slightly smaller than the inner diameter of the tank body; a hot water supply tank that continuously supplies hot water; The gist is that the baffle plate is fixed between the mirror plate and the tank body and the hot water supply tank are communicated with each other.

Next, one embodiment of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a corrugated tube type heat exchanger, which mainly consists of a tank body 2 and a head plate 3. Both the tank body 2 and the head plate 3 have a flange 2L31 on the periphery of the opening.

A baffle plate 4 is composed of a support plate 41, a cylindrical body 42, and an upper conical plate 43.

The support plate 41 supports the baffle plate 4 and also includes the steam flow holes 41.
1 is drilled to condense and adhere excess moisture in the steam, and is formed to be larger than the inner diameter of the opening of the tank body 2 in order to be clamped and fixed between the flange 21 of the tank body 2 and the flange 31 of the end plate 3. .

A cylindrical body 42 is formed on the lower surface of the support plate 41 and has a steam communication hole 421 for condensing excess moisture in the steam and adjusting the amount of steam supplied, similarly to the support plate 41.

The cut portion of the earth cutting conical plate 43 is joined to the lower end mouth portion of the cylindrical body 42 .

The conical plate 43 adjusts the exhaust amount of steam evaporated from the hot water surface, and also serves as a guide plate for guiding water droplets condensed on the support plate 41 and the cylinder 42 into the hot water of the heat exchanger 1 when they drip. Therefore, the inner diameter of the heat exchanger 1 is slightly smaller than that of the heat exchanger 1, and a gap with the tank body 2 is provided to allow water droplets to fall.

Reference numeral 5 denotes a hot water replenishment tank, which has a built-in heat exchange flexible pipe 6 for guiding a preheating heat medium.

A water pipe 7 is connected to the hot water replenishment tank 5, and a water level adjustment valve 8 having a float is provided at the outlet of the water pipe 7 to automatically control the water level.

The heat exchanger 1 and the hot water replenishment tank 5- are communicated with each other by a communication pipe 9, and when the hot water in the heat exchanger 1 decreases, the hot water in the hot water replenishment tank 5 passes through the communication pipe 9 and flows into the heat exchanger 1. Inflow.

Since this inflow action is performed by utilizing the height difference between the heat exchanger 1 and the hot water supply tank 5, a pedestal 10 is installed below the hot water supply tank 5.

The height of the pedestal 10 varies depending on the steam exhaust pressure, the size of the heat exchanger 1, etc., and is not constant, but is approximately 4 cm high.

Next, the operating mode of the device according to the present invention will be explained.

The high-pressure steam sent from the boiler circulates through the corrugated pipe 11 and warms the water in the heat exchanger 1, generating steam at almost normal pressure.

Exhaust of the generated steam is restricted by a cutting conical plate 4'3 that adjusts the exhaust amount.

The steam that has passed through the earth-cutting conical plate 43 is transferred to the cylinder body 42 and the support plate 4.
The steam passes through the steam distribution hole 42L411 of No. 1 and heads toward the exhaust port 32.

At this time, the excess water in the steam condenses and adheres to the cylinder 42 and the support plate 41, becoming water droplets and falling into the hot water while sliding on the earth cutting conical plate 43.

The steam with excess water removed in this way is sent to the steamer, but as the steam is generated, the hot water in the heat exchanger 1 begins to decrease and the water level drops, and at the same time the hot water in the hot water supply tank 5 is transferred to the heat exchanger 1. flow inside.

When the water level in the hot water replenishment tank 5 decreases, the float 8 lowers and the stopper of the water conduit 7 is opened.

This operation is repeated, and a constant amount of steam from which excess moisture has been removed is always supplied to the steamer.

As described above, since the present invention has the above-described configuration, when steaming processed food raw materials, it is possible to stably supply steam suitable for brewing processed raw materials at a pressure slightly higher than normal pressure after removing a certain amount of excess moisture. .

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of the steam generator of the present invention, FIG. 2 is a partial sectional view of the baffle plate portion, and FIG. 3 is an exploded perspective view of the baffle plate portion. 1... Heat exchanger, 2... Tank body, 3.
...Mirror plate, 4...Baffle plate, 41...
...Support plate, 42...Cylinder, 43...
Earth-cutting conical plate, 5...Hot water supply tank, 6...
・Serial pipe, 7... Water conduit pipe, 8... Water level adjustment valve, 9... Communication pipe, 10... Frame.

Claims (1)

[Scope of Claims] 1. In a steam generation device consisting of a corrugated tube heat exchanger, a support plate having a diameter larger than the inner diameter of the tank body is provided with steam communication holes, and a steam communication hole is provided in the lower surface of the support plate. a baffle plate shaped like a bored cylindrical body and joined to a lower end opening of the cylindrical body and a cut portion of a conical cut plate having a diameter slightly smaller than the inner diameter of the tank body; a hot water replenishment tank that continuously supplies hot water; A steam generator comprising: and; characterized in that a baffle plate is fixed between the tank body and the end plate, and the tank body and the hot water supply tank are communicated with each other.