JP2008151391A - Heating, sterilization, and drying apparatus using superheated steam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize the time and costs required in generation of superheated steam, to simplify an internal structure of a superheated steam generator, and to save on various costs for manufacture and maintenance. <P>SOLUTION: The apparatus is provided with: a saturated steam distributor 10 supplied with saturated steam generated by a boiler 11, and selectively distributing the saturated steam passed through a separator 12 and separated from condensed water in an open process of a valve element 13; the superheated steam generator 20 heating the steam supplied by the saturated steam distributor 10, through multiplicities of discs 23 and superheated steam heaters 22 stacked in a superheating chamber; and superheated steam supply piping 30 ejecting the superheated steam generated by the superheated steam generator 20 and discharged via the superheating chamber 21 toward a heating portion H through ejection piping 32. The steam supplied to a superheated steam generating device is thereby heated through an eddy current effect by an internal structure of the device, it is decomposed into small molecular clusters, and temperature efficiency of the superheated steam is improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a heating / sterilization / drying device that uses superheated steam generated from a steam generator as a heat source, and in particular, not only simplifies the superheated steam generator but also reduces manufacturing costs, while minimizing water molecules. Heating / sterilizing / drying equipment that produces high-temperature steam that easily penetrates into the substance and synergistically uses the superheated steam generator and far infrared rays that can maximize the temperature rise effect. About.

Generally, a superheated steam generator heats saturated steam supplied from a boiler and generates a large volume of superheated steam in a short time. It is used as a heat source for sterilizers and drying utensils as well as food utensils. For example, cooking utensils using superheated steam have the advantage that the taste does not change with less salt and fat in foods and less oxidation due to heating.
Prior art is disclosed in the following documents.
JP 2006-34482 A

However, the existing superheated steam generator has a built-in complex component including a screw-type electric heat pipe (FIN HEATER) to secure the passage cross-sectional area required to generate and process superheated steam. However, there is a problem in that various costs are increased, thereby increasing costs for maintenance and repair of the apparatus.
And the superheated steam generator is not only difficult to obtain superheated steam with uniform temperature due to the great deviation of the steam flow rate, but also the local overheating phenomenon of the heating tube itself due to the flow rate deviation. When this occurs, there is a problem that durability deteriorates due to deterioration of built-in components.

Simplify the internal structure of the superheated steam generator, reduce manufacturing costs as well as various incidental costs by maintaining and repairing components, as well as minimizing the size of steam particles and maximizing the efficiency of temperature increases The object is to provide a heating / sterilizing / drying apparatus using a superheated steam generator which can be used.
To achieve the above object, the present invention provides a saturated steam distributor that selectively distributes saturated steam generated by a boiler and separated through water through a separator in the process of opening a valve body; A superheated steam generator heated by a number of heaters while vortexing the steam supplied by the distributor through a number of disks stacked in the superheat chamber; and generated by the superheated steam generator and discharged through the superheat chamber It consists of a superheated steam injector that injects superheated steam toward a superheated location through an injection pipe and a ceramic heater that generates far-infrared rays.

Examples according to the present invention will be described below.
FIG. 1 is a conceptual diagram of an apparatus using a superheated steam generator according to the present invention, FIGS. 2 and 3 are exploded views and cross-sectional views of the superheated steam generator according to the present invention, and FIGS. FIG. 5 is a cross-sectional view of a heater portion which is a component of the superheated steam generator according to the present invention, and FIG. 5 is a cross-sectional view of the injection pipe of the superheated steam generator according to the present invention.
A saturated steam distributor (10) that selectively distributes saturated steam generated by the boiler (11) and separated from the condensed water by passing through the separator (12) in the process of opening the valve body (13); A superheated steam generator (20) that heats steam supplied by the saturated steam distributor (10) with a number of superheated steam heaters (22) while vortexing through a number of disks (23) stacked in the superheated chamber (21). And a superheated steam injection pipe for injecting the superheated steam generated by the superheated steam generator (20) and discharged through the superheat chamber (21).

First, an appliance using the superheated steam generator according to the present invention is a structure such as a heating appliance, a sterilizing appliance, and a drying appliance, and the same components are used for the heating, sterilizing, and drying appliances. I will explain. In particular, the following description will be given by referring to all the appliances limited to heating appliances.
Here, the heating device (1) includes a saturated steam distributor (10) that distributes the saturated steam generated by the boiler (11), and superheated steam generation that heats the steam supplied by the saturated steam distributor (10). Machine (20), a superheated steam injector (30) for supplying superheated steam produced by this superheated steam generator (20) to the place of use, and a controller (not shown) for controlling the above components .
The saturated steam distributor (10) is connected to a supply pipe (15) connected to the boiler (11) with saturated steam supplied by the boiler (11), and a water pipe is mounted on the supply pipe (15). And a separator (12) for separating the steam, and a valve body (13) for adjusting the supply amount of saturated steam separated by the separator (12).
In addition, a drain pipe (14) for discharging the remaining saturated steam remaining in the supply pipe (15) distributed by the valve body (13) and supplied to the superheated steam generator (20) and condensed water is attached. The

The supply pipe (15) includes a decompressor (16) for reducing the saturated steam supplied by the boiler (11) to a pressure required by the superheated steam generator (20), and the superheated steam generator (20 The safety valve (17) is configured to control the vapor pressure flowing into the pressure to a specified pressure.
The valve body (13) adjusts the amount of saturated steam supplied from the boiler (11) and supplies it to the superheated steam generator (20) .At least one or more sets of first, The first electronic valve (13a) and the second electronic valve (13b) are controlled to adjust the amount of saturated steam flowing into the superheated steam generator (20). Open and close simultaneously or individually according to the signal of the machine (not shown).
The superheated steam generator (20) generates saturated superheated steam by heating the saturated steam supplied by the saturated steam distributor (10), and is selectively supplied by the valve body (13). A housing (27) that forms a superheat chamber (21) for receiving the heat, a number of superheated steam heaters (22) and a number of disks (23) that are sequentially installed inside the housing (27). In addition, the housing (27) is configured in a cover (24) having an inlet (24a) attached to the upper stage of the superheat chamber (21) and connected to the supply pipe (15), and a lower stage of the superheat chamber. A heating port (25) to which the superheated steam supplier (30) is connected is attached.
The housing (27) is preferably formed in a circular shape, and in particular, it is desirable to use a material having excellent corrosion resistance and heat resistance such as stainless steel.
The cover (24) is preferably fixed to the upper end of the superheat chamber (21) with fastening means such as bolts, and in particular, the main body is provided with a number of superheated steam heaters (22) described later. A circular hole (24b) is formed.

And the disk (23) is arranged in order in the internal space of the superheat chamber (21) with a certain interval in the horizontal direction, and performs the support function of the superheated steam heater (22) while vortexing the steam. The outer diameters of the disks (23-1) located in the odd rows and the disks (23-2) located in the even rows are alternately formed.
Also, the disk (23) passes between the inner wall of the superheat chamber (21) and the odd-numbered disk (23-1) (gap) and in the center of the even-numbered disk (23-2) while swirling the fluid. Each fluid passage space (26) is formed.
In addition, it is desirable to use a material having excellent corrosion resistance and heat resistance such as stainless steel as the material of the disk (23), but it is a matter of course that ceramic materials can also be used.
The disk (23) is formed with a large number of fixing holes (23a) for fixing the superheater heater (22) to the main body at regular intervals.
The superheated steam heater (22) is supplied to the superheat chamber (21) while being fixed to the fixing hole (23a) of the disk (23) and passes through the fluid passage space (26). However, it is overheated while being swirled.

Further, the superheated steam heater (22) is coated with stainless steel (22b) or ceramics (22c) around the heat wire (22a) formed at the center thereof (FIG. 4a) or stainless steel (22b). ) Or ceramics (22c) are sequentially coated (FIG. 4b) to protect or dissipate far infrared radiation.
In addition, a ceramic heater (33) made of a ceramic material that emits highly penetrating far-infrared waves is installed in the heating place (H) to improve the firing, heating and drying speed in parallel with the atomized superheated steam. You can also.
At this time, the ceramic heater (33) is used for the purpose of adjusting the heating temperature in the heating place (H) as well as preventing the superheated steam injected through the superheated steam injection pipe (32) from condensing. Of course it is done. Further, it is desirable to install an automatic temperature measuring device (31b) for adjusting the temperature of the ceramic heater (33) at the heating place (H).
The superheated steam supply pipe (30) uses the superheated steam injection pipe (32) to heat the superheated steam heated while vortexing by the interaction between the disk (23) and the superheated steam heater (22). It is desirable to install an automatic temperature measuring device (31a) for adjusting the temperature of the superheated steam in the discharge pipe.

In addition, the superheated steam injection pipe (32) is formed by directly forming conical holes in a line on the surface of the main body, or arranged at both sides of the main body surface at an injection angle of about 30 ° to each of the injection holes (32a). A round screw with is regularly formed.
That is, as shown in FIG. 5, the superheated steam injection pipe (32) has a stainless steel round screw mounted on both sides of the surface of the main body, and this round screw has a conical shape having the necessary angle and length. It is desirable to process the injection port (32a).
When the hole of the superheated steam injection pipe (32) is clogged with a foreign substance, it can be easily replaced by separating only the processed round screw.
At this time, as the heating place (H) using the superheated steam generated by the superheated steam supply pipe (30), for example, cooking utensils for cooking food such as pizza, various heating utensils, dry sterilization utensils, living utensils Used in various fields such as garbage drying, paint drying, wood drying and carbonization equipment.
The controller (not shown) is electrically connected to the saturated steam distributor (10), the superheated steam generator (20), and the superheated steam supply pipe (30), and the pressure, steam amount, and heating time of the component parts. In response to the input of the temperature signal, the operation signal is output.

Hereinafter, the operation according to the present invention will be described.
First, the operation process of the heating device will be explained. The saturated steam produced by the boiler (11) of the saturated steam distributor (10) is set to an appropriate pressure by the pressure reducing valve (16) and the safety valve (17). Is supplied to the superheated steam generator (20) through the valve body (13).
In this way, pure saturated steam passing through the separator (12) is injected into the superheated steam generator (20) through the valve body (13), while water and steam are separated by the separator (12). Thus, the residual saturated steam that cannot pass through the valve body (13) and the condensed water are discharged and removed through the drain pipe (14).
At this time, the supply amount of the saturated steam passing through the valve body (13) is adjusted by operating the first electronic valve (13a) and the second electronic valve (13b) simultaneously or individually, so that the supply of saturated steam The amount is adjusted according to the state of the device.

On the other hand, the saturated steam supplied to the superheated steam generator (20) comes out in order from the fluid passage space (26) of the disk (23-1) and the fluid passage space (26) of the disk (23-2), It collides with the disk (23) or with vapor molecules to generate a vortex.
At this time, the steam exiting the fluid passage space (26) is heated by the superheated steam heater (22), forms a vortex, and collides with each other or with the disk (23) to be decomposed into small molecules (clusters).
As a result, the saturated steam becomes permeable superheated steam and has an effect of efficiently increasing the temperature of the superheated steam.
That is, the steam heated by the superheated steam heater (22) requires 539 calories of energy when vaporized and possesses latent heat of vaporization, so that the smaller the steam particles, the easier it will penetrate into the object to be heated. Moreover, since the vapor | steam particle | grains are small, even if a target object is a complicated structure, it enters into a detail and the bactericidal effect is large.
At this time, when the far-infrared ceramic heater (33) is mounted in the heating place (H), it is possible to have a function of preventing the dew condensation immediately after being jetted, which is a drawback of the superheated steam.
Furthermore, by using in parallel the far-infrared wave emitted from the ceramic-coated heater (33) and the latent heat of the atomized superheated steam, the object to be heated can be further baked, heated, dried and sterilized. Do it at high speed, increasing efficiency.
If the superheated steam generator (20) turns off the superheated steam heater (22) and then flows saturated steam through the first and second electronic valves (13a, 13b), It can also be used as a cleaning steam.

As described above, according to the present invention, the steam supplied to the superheated steam generator is heated through the eddy current action by the internal configuration of the apparatus and decomposed into small molecules (clusters) to improve the temperature efficiency of the superheated steam. .
Further, not only is the time and cost required for generating superheated steam minimized, but the internal structure of the superheated steam generator is simplified, and various costs for manufacturing and maintenance are reduced.
In addition, by using a far-infrared ceramic heater in combination, the rapid temperature drop that is a disadvantage of superheated steam is prevented, and the synergistic effect of vaporization latent heat and far-infrared radiation possessed by superheated steam is utilized. Drying and sterilization time can be shortened.
In the operation process of the superheated steam generator, when a clogging phenomenon of a hole formed in the superheated steam injection pipe occurs, it is possible to easily replace only the round screw without replacing the entire superheated steam injection pipe. Therefore, there is an effect that various costs associated with maintenance and repair of the apparatus can be reduced.

The conceptual diagram of the instrument using the superheated steam by this invention Exploded view of superheated steam generator according to the present invention Assembly sectional view of superheated steam generator according to the present invention Sectional drawing of the heater part in the components of the superheated steam generator by this invention Sectional drawing of the injection piping of the superheated steam generator by this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Saturated steam distributor 11 Boiler 12 Separator 13 Valve body 14 Drain pipe 15 Saturated steam supply piping 20 Superheated steam generator 21 Superheated chamber 22 Superheated steam heater 23 Disk 30 Superheated steam supply piping 31 Automatic temperature measuring device 32 Superheated steam injection piping 33 Ceramic heater

Claims (5)

A saturated steam distributor (10) that selectively distributes saturated steam produced by the boiler (11) and separated from the condensed water by passing through the separator (12) in the process of opening the valve body (13); A superheated steam generator (20) that superheats through a number of superheated steam heaters (22) while vortexing the steam supplied by the saturated steam distributor (10) through a number of disks (23) stacked in the superheated chamber (21). And superheated steam supply pipe for injecting superheated steam generated by the superheated steam generator (20) and discharged through the superheated chamber (21) toward the heating place (H) through the superheated steam injection pipe (32) ( 30), a heating / sterilizing / drying device using superheated steam.
The instrument according to claim 1, wherein the disk (23) is formed such that the outer diameters of the odd-numbered disk (23-1) and the even-numbered disk (23-2) are staggered, Each fluid passage space (25) for vortexing the steam is formed in the gap between the inner wall of the chamber (21) and the odd-numbered disk (23-1) and the center of the even-numbered disk (23-2). Heating / sterilizing / drying equipment using superheated steam.
2. The superheated steam heater according to claim 1, wherein the superheated steam heater (22) is coated with stainless steel (22b) or ceramics (22c) on a heat wire (22a) formed at the center thereof. Heating / sterilizing / drying equipment using
2. The superheated steam according to claim 1, wherein the injection pipe (32) has a plurality of round screws each having injection holes (32 a) arranged in a row or on both sides of the main body surface. Heating / sterilizing / drying equipment using
The appliance according to claim 1, wherein the heating place (H) not only prevents the superheated steam injected through the superheated steam injection pipe (32) from condensing into water, but also the heating place (H). A heating / sterilizing / drying device using superheated steam, which is equipped with a ceramic heater (33) for adjusting the heating temperature inside.

Images