KR20000016961A - Method for Production of Normal-Pressured, Over-Heated Steam - Google Patents

Abstract

PURPOSE: The method which vapor is heated by electric heater is wasting energy and not efficient. CONSTITUTION: A preparing method of normal pressured over-heated vapor is a useful device of sterilization, dry and cooking. Because this method doesn't need to use high pressured boiler or high pressured chamber it is simple, stable and easy to manage. The normal pressured over-heated vapor is obtained by heating water to form vapor and over-heating the vapor mixed with combustion gas. The combustion gas can be from combustion of liquid or gas fuel containing carbon or hydrogen, or natural gas.

Description

Method for manufacturing atmospheric superheated steam {Method for Production of Normal-Pressured, Over-Heated Steam}

The present invention relates to a method for producing atmospheric pressure superheated steam. Superheated steam can be used as heating means for sterilization and drying or cooking. In this case, since the superheated steam at normal pressure does not need to use a pressure device such as a high pressure boiler or a high pressure vessel, the equipment is simple, has excellent stability, and is easy to manage. This atmospheric superheated steam is possible by generating steam and then heating it to a high temperature.

Conventionally, in order to manufacture atmospheric superheated steam, steam has been heated to a high temperature using a heating apparatus such as an electric heater to overheat. However, in the conventional method of heating steam using an electric heater or the like, the efficiency of heating the steam to a high temperature is low, and thermal energy has not been efficiently used for overheating, resulting in waste of energy.

It is an object of the present invention to solve the problems of the prior art as described above and to provide a production of atmospheric pressure superheated steam capable of efficiently heating steam to a high temperature with a simple structure.

1 is a schematic configuration diagram showing an embodiment of the present invention.

Figure 2 is a schematic diagram showing another embodiment of the present invention.

***** Explanation of symbols for main parts of drawing *****

1. Steam generator (1) 2. Combustion unit (2) 3. Cooker

4, 9. Steam passage 6. Combustion gas passage 8. Mixing chamber

In order to achieve the above object of the present invention, in the present invention, water is heated at normal pressure to generate steam, and a method of manufacturing atmospheric superheated steam, characterized in that the combustion steam is mixed with the generated steam to superheat. To provide.

According to this structure, since the hot combustion gas is mixed with steam at atmospheric pressure to heat the steam to a high temperature, the thermal energy of the combustion gas is efficiently used to superheat the steam, and the heat loss can be suppressed to obtain atmospheric superheated steam. .

At this time, it is preferable that the combustion gas is a liquid or gas fuel containing carbon or hydrogen, or natural gas.

According to this structure, alcohols such as ethyl alcohol, methyl alcohol, propyl alcohol and butyl alcohol or liquid fuels such as propane and butane, combustible gas or hydrocarbons are combusted and the combustion gas is subjected to atmospheric pressure. Since it is mixed with water vapor, most of the combustion gas contains no components other than carbon dioxide and water (H ₂ O), so mixing with superheated steam does not cause any problem.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram showing an embodiment of the present invention. In this embodiment, the steam generated in the atmospheric steam generator 1 is heated to a high temperature with the combustion gas combusted in the combustion device 2 to produce atmospheric superheated steam, and the atmospheric superheated steam, for example, the cooker 3 ) Can be used for various heating cooking. The atmospheric steam generator 1 is connected to the cooker 3 via a steam passage 4. The steam passage 4 is provided with a fan 5 to send steam to the cooker 3. In the middle of the steam cylinder 4, a combustion gas passage 6 for sending the combustion gas generated by the combustion device 2 is connected. A fan 7 is installed in the combustion gas passage 6 to send the combustion gas into the steam passage 4. In this way, when the hot combustion gas in the steam passage 4 is mixed with the atmospheric pressure steam, the steam is heated to a high temperature to obtain the atmospheric superheated steam.

In addition, since the superheated steam sent to the cooker 3 is discharged from the cooker 3 after being used for cooking, the superheated steam always passes through the cooker 3, and the enthalpy of steam is maintained.

The atmospheric steam generator 1 refers to a device that generates water vapor by heating water at normal pressure by an electric heater (not shown) or gas combustion.

The combustion device 2 is a device for burning a gas fuel or a liquid fuel containing carbon and hydrogen such as alcohol, propane or natural gas. Since the combustion temperature can be controlled by adjusting the supply amount of the fuel to be combusted, it is possible to easily control the temperature of the superheated steam. In addition, since the steam passage 4 and the combustion gas passage 6 are atmospheric pressures, if the combustion gas passage 6 is installed in the vertical direction to allow the combustion gas to form an upward air flow, the combustion gas may be in the vapor passage even without the fan 7. 4) It can be introduced into.

2 is a schematic configuration diagram showing another embodiment of the present invention.

In this embodiment, the atmospheric steam generator 1 and the combustion device 2 are connected to the mixing chamber 8, and the atmospheric pressure steam and the combustion gas are mixed in the mixing chamber 8 to produce superheated steam. The produced atmospheric superheated steam is sent to the cooker 3 by the fan 10 through the steam passage 9 and used for various heating cooking. Other configurations and effects are the same as in the embodiment according to FIG.

In the embodiment as shown in FIG. 2, it is also possible to install the combustion device 2 in the mixing chamber 8 to generate combustion gas in a room temperature steam atmosphere.

In each of the above embodiments, it is possible to use room temperature superheated steam not only for cooking, but also for drying apparatuses such as sterilizers and metals or for warming. When used as a sterilizer, it is possible to kill sterilization or kill microorganisms or pests in the state of blocking the air by spraying the sterilization object with water vapor, and to effectively exert the sterilization effect of water vapor against microorganisms. Do.

It is also possible to apply it to eggs or cultural agents as a target of sterilization. It is possible to kill the harmful bacteria such as Salmonella quickly by the sterilization of the eggs, it is possible to obtain a remarkable effect on the food violation even with a simple configuration. It is also possible to preserve historic articles by killing pests, eggs of pests, etc. by sterilizing the cultural property.

According to the present invention, since superheated steam is produced by mixing hot combustion gas with steam at atmospheric pressure, the thermal energy of the combustion gas efficiently heats the steam and suppresses heat loss without using a pressure vessel. It is possible to get

Claims (2)

Water is heated at atmospheric pressure to generate water vapor, Method for producing a normal pressure superheated steam, characterized in that for heating the high temperature by mixing the combustion gas to the generated steam. The method of claim 1, wherein the combustion gas is a liquid containing carbon and hydrogen, or a gas obtained by burning gas or natural gas.