JPH02161916A - Method and device for generating steam and steaming processor using the device - Google Patents

Abstract

PURPOSE:To easily obtain high purity and high temperature steam under atmospheric pressure by equipping the device with an atomization room to atomize water by ultrasonic oscillation and a heating means to heat the mist and change the mist into steam. CONSTITUTION:An ultrasonic oscillator 12 is installed in the approximate center of the bottom of a water storage part 5, and a heating board 15 is provided on a steam generating part 4. When a steam time setting switch 14 of a timer 13 is turned on, the ultrasonic oscillator 12 is placed in an operating state, and the vibrator of the oscillator 12 is driven and atomizes and scatters the water in the water storage part 5. The scattered mist scatters and ascends, flows along a baffle 17, fills in an atomization room 16 to occupy the lower part of the steam generating part 4, and becomes a filled state under the heating board 15. The heating board 15 is provided under a state in which the heating board 15 divides the steam generating part 4 into an upper part and a lower part and equipped with fine holes 20 to vent the mist filled in the lower part to the upper part, and a sheathed heater 19 is embedded in the internal part of the heating board 15 under a state in which the sheathed heater 19 meanderingly passes between the lines of the fine holes 20. Thus, the heating board 15 receives the heating of the sheathed heater 19 under the operating state, and when the mist filled in the lower part passes through the fine holes 20, the mist is instantaneously change into the high temperature steam and made to blow out upward.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a steam generation method, an apparatus therefor, and a steam heat treatment apparatus using the same. The present invention relates to a method and apparatus for generating steam used to regenerate food products that have been used for cooking, and for steaming steamed foods such as red rice and steamed egg custard, and a steam heat treatment apparatus using the same.

(Conventional technology) Although steam obtained by heating water is used to regenerate or steam the object to be processed, a steamer that directly applies steam from hot water to the object has poor heating efficiency and takes a long time to process. Not suitable for use. Therefore, as shown in Japanese Patent Publication No. 58-50727, for example, a steam heat treatment apparatus has been proposed in which steam is obtained by instantaneously evaporating a small amount of water on a hot plate, and the steam is applied to the object to be treated. ing.

(Problem to be Solved by the Invention) However, although the above device has better heating efficiency than the steamer, it uses a steam generation method that heats water droplets sprinkled on the heater, so the heating surface of the heater is heated. It does not work effectively and the steam generation efficiency decreases. In order to generate a large amount of steam, it may be possible to increase the area of the heating device, but this would make the device extremely large and would be impractical.

Also, the steam obtained with the above device cannot be heated to very high temperatures. For these reasons, it takes a considerable amount of processing time to thaw and regenerate frozen foods, and it is particularly difficult to handle situations such as frozen pilaf, which must be immediately thawed and regenerated in response to customer orders. .

Therefore, the present invention generates a large amount of high-temperature steam by heating a mist of water, and allows the steam to be efficiently applied to the object to be treated in a short period of time. The purpose of the present invention is to provide a steam generation method and a device for generating steam that are suitable for a wide variety of uses, as steam has high purity, and a steam heat treatment device using the same.

(Means for Solving the Problems) In order to achieve the above object, the present invention has the first feature of atomizing water, further heating the mist to turn it into steam, and generating water by ultrasonic vibration. A second aspect of the present invention includes: an atomizing chamber having an atomizing means for atomizing; and a heating means placed in a discharge path of the mist generated in the atomizing chamber to heat and vaporize the mist.
This is the characteristic of

It also includes a steaming section that exposes the material to be treated to steam and steam-processing it, and a steam generating section connected to send steam to the steaming section, and a water supply means that can supply water in an appropriate amount at a timely manner to the steam generating section. A third feature of the present invention is that it is provided with an atomizing means for atomizing supplied water by ultrasonic vibration, and a heating means for heating the atomized mist to vaporize it.

(Function) The first feature is that water is first atomized to become fine particles, and then heated, so that the fine particles of water are efficiently heated from around them and vaporized extremely instantaneously. ,
In addition, sufficient heat can be applied to raise the temperature.

In the second feature, water is sequentially atomized in the atomization chamber by ultrasonic vibrations of the atomization means, and the resulting mist is of high purity, fills the atomization chamber, and escapes to the outside through the discharge path. At this time, the heating means placed in the discharge path reliably acts on the mist that escapes and achieves the extremely instantaneous high-temperature vaporization and further increases the purity.

The third feature is that water can be supplied to the steam generating section in an appropriate amount at a timely manner by the water supply means, and the water to be supplied is maintained at a predetermined water level, so that the required amount is generated by ultrasonic vibration of the atomizing means of the steam generating section. Can be stably atomized. The mist thus generated is vaporized by the heating means in the steam generating section. At this time, the finely divided water is scattered within the steam generating section, and the heating means works efficiently to instantly turn a sufficient amount of mist into high-temperature vapor and send it to the steaming section.

Therefore, in the steaming section, the object to be treated can be exposed to a sufficient amount of high-temperature steam for steaming treatment.

(Example) An example in which the present invention shown in FIGS. 1 and 2 is applied to a steam heat treatment apparatus will be described.

As shown in FIG. 1, the steam heat treatment apparatus of this embodiment has a
A steam heating section 2 is provided above the steam heating section 2, and a steam generating section 4 is provided below the steam heating section 2. The steaming section 2 is formed into a chamber having an inlet/outlet 3 in the lower half of its front surface. A heat insulating material 18 is filled between the steam heating section 2 and the steam generating section 4, excluding the front surface, and the exterior body of the fuselage 1. A water storage section 5 is formed at the bottom of the steam generation section 4 by expanding at the front, and a water supply means 6 is connected to the expanded portion of the water storage section 5 .

The water supply means 6 is a pipe 7 connected to a water supply source such as a city water supply.
A solenoid valve 9 connected to the liquid level sensor 8 and a magnetic processor 10 are provided in the middle.

The solenoid valve 9 is controlled by a liquid level sensor 8 arranged at a corner of the water storage part 5 in order to maintain a constant level of water supplied to the water storage part 5, and when the detected value of this liquid level sensor 8 decreases, the valve is closed. Open the valve to supply water, and when the valve rises, close the valve to stop the water supply.

The magnetic treatment device 10 softens the supplied water by passing it through a magnetic field, and prevents hard substances such as calcium from adhering to various parts of the steam generating section 4.

An ultrasonic oscillator 12 is installed approximately at the center of the bottom surface of the water storage section 5 . A heating device 15 is provided above the steam generating section 4. The ultrasonic oscillator 12 is kept in operation for the set time by keeping the switch 14 on while the timer 13 is setting the steaming time. When the ultrasonic oscillator 12 is in operation, its oscillator is driven to atomize and scatter water in the water storage section 5. Note that the timer 13 is set for a time based on an index or a menu table depending on the type and amount of the object to be processed.

The mist atomized and scattered by the ultrasonic oscillator 12 scatters upward, flows along the deflection plate 17, fills the atomization chamber 16 that occupies the lower half of the steam generation section 4, and is deposited under the heater 15. I become muffled. The baffle plate 17 is supported by legs 17a, and a small hole 17b in the center bottom allows water droplets adhering to the baffle plate to fall downward.

The heating device 15 is provided to divide the steam generating section 4 into upper and lower sections, and has pores 20 for removing the mist trapped below upwardly, and has a sheathed heater 19 inside the pores 20 as shown in FIG. It is buried in a meandering manner between the rows. As a result, the heater 15 receives heat from the sheathed heater 19 in the operating state, and heats the mist trapped below as it escapes upward through the pores 20. It takes a little time for the heating device 15 to reach a predetermined temperature, and if this is inconvenient for use, it is usually kept in a preheated state to maintain it at an appropriate temperature, and sometimes the main heating is performed when the actual steaming process is performed. It is convenient if you do this. The pores 20 of the heating device 15 allow all of the water that has become fine particles due to the atomization that passes through the heating device 15 from below to above to be heated almost directly by the heating device 15 with high thermal efficiency. When passing through the pore 20,
It instantly turns into high-temperature vapor and ejects upward. In addition, heating device 1
5 is covered with a heat insulating material 21 to prevent heat dissipation to the top.

The high-temperature steam ejected from the upper surface opening of the pore 20 of the heating device 15 is introduced into the processing container 22 in the steam heating section 2 through the net material 22b attached to the bottom surface thereof. The processing container 22 is inserted by the handle 22a through the inlet/outlet 3 of the steam heating section 2, and the bottom surface thereof may be covered with a perforated material in addition to the net material 22b. The high-temperature steam introduced into the processing container 22 is passed through the heater 1 at the upper part of the steam generation section 4.
5, the object to be processed in the processing container 22 is ejected, diffused and filled, and after reaching a uniform static pressure state, passes through the net material 22b and flows out to the steaming section 2. Even if they are placed in a container all at once, the entire container can be steamed evenly and uniformly.

Reference numerals 11 and 11 are baffle plates that are installed between the liquid level sensor 8 and the water supply position and the installation part of the ultrasonic oscillator 12 to prevent the movement of the ultrasonic oscillator 12 and the shaking of the liquid level due to water supply. The detection by the position sensor 8 is not given any special meaning.

(Effects of the Invention) According to the steam generation method of the present invention, water that has been atomized into fine particles is efficiently heated from the surrounding area to vaporize very instantaneously, and sufficient heat is provided to raise the temperature. This makes it possible to easily obtain high-purity, high-temperature steam under atmospheric pressure.

Further, according to the steam generator of the present invention, water is sequentially atomized in the atomization chamber by ultrasonic vibrations of the atomization means, and the high-purity mist generated thereby fills the atomization chamber and is passed through the discharge path to the outside. When the mist leaves the mist, the heating means placed in the discharge path acts on the mist without escaping, so the very instantaneous high-temperature vaporization and further purification can be achieved efficiently.

Further, according to the steam heat treatment apparatus of the present invention, the water supplied in appropriate amounts at appropriate times by the water supply means is maintained at a predetermined water level, and the necessary amount is atomized by the ultrasonic vibration of the atomization means of the steam generation section, and this mist is When the water is vaporized in the steam generating section under the action of the heating means, fine particles of water are scattered within the steam generating section, and the heating means works efficiently to produce a sufficient amount of mist extremely instantaneously. It can be vaporized at high temperature and sent to the steaming section. Therefore, in the steaming section, the object to be treated can be exposed to a sufficient amount of high-temperature steam and can be steam-heated efficiently in a short time.

In addition, highly purified high-temperature steam is obtained from the highly purified and finely divided water obtained by the steam generation method and its device, and is applied to the object, making it extremely hygienic and food-friendly. Not only is it safe for steaming food and recycling frozen foods, but it can also be used for steaming other than food products.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing one embodiment of the present invention, and FIG. 2 is a plan view with a portion of the heating means cut away. Steam heating section Steam generating section Water supply means Ultrasonic oscillator Heating plate Atomization chamber Sheathed heater

Claims (1)

[Scope of Claims] (1) A steam generation method characterized by atomizing water and further heating the mist to generate steam. (2) An atomization chamber having an atomization means for atomizing water by ultrasonic vibration, and a heating means placed in the discharge path of the mist generated in the atomization chamber to heat and vaporize the mist. Equipped with a steam generator. (3) Equipped with a steam-heating section that exposes the material to be treated to steam and performs steam-heat treatment, and a steam-generating section connected to send steam to the steam-heating section, and capable of supplying water in an appropriate amount at a timely manner to the steam-generating section. 1. A steam treatment apparatus comprising a water supply means, an atomization means for atomizing supplied water by ultrasonic vibration, and a heating means for heating the atomized mist to vaporize it.