JP2012135591A - Small size device for heating steam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decompose microorganism and chemical substance such as a bacterium and a virus existing in the air, using 300°C or higher heated steam.SOLUTION: In order to make water and steam efficiently heated, two or more heating elements 1 for generating heat by electromagnetic induction heating are installed, a cavitation trap 2 is arranged in a moving direction of the steam, a steam outlet 3 is configured to be arranged in a sterilization room arranged in its upper part. This sterilization room is configured to keep a fan installed to externally take-in the air and a fin for efficiently mixing with the air, and piping installed to recover the cooled steam into a reservoir tank.

Description

  The present invention relates to a sterilization apparatus that aims to kill viruses, bacteria, and the like existing in the air with heated steam.

In recent years, in air purifiers, a method using a filter carrying a photocatalyst such as rutile, a method in which harmful substances are charged or ionized and removed by a cluster of water, and positive ions and negative ions are generated, A method for removing microorganisms and harmful substances is known.
JP 2007-289858 A, JP 2003-284766 A

However, in medical institutions, a high-pressure heated steam is used for sterilization treatment of a medical jig, and a technique for reliably removing the medical jig is known.
Japanese Patent Laid-Open No. 2005-13688

As for heated steam, a method is known in which a heating element is heated to a high temperature range of 800 ° C. or higher by electromagnetic induction heating.
Japanese Patent Laid-Open No. 11-233245

  As described above, the conventional air cleaners disclosed in Japanese Patent Application Laid-Open Nos. 2007-289858 and 2005-13688 have a certain effect, but have not achieved the effect of the removal bacteria treatment normally used by medical institutions. . On the other hand, although the sterilization treatment using high-pressure heated steam can surely sterilize, microorganisms such as bacteria and viruses contained in the air cannot be killed unlike an air cleaner.

  Moreover, the gas body temperature rising apparatus shown by Unexamined-Japanese-Patent No. 11-233245 is centering on a gas body, and does not heat water and water vapor | steam simultaneously. For this reason, there is a problem that the size cannot be reduced. Furthermore, since the boiling point of water is 100 ° C., when it comes into contact with a heating element of 100 ° C. or more, the contact area with water is reduced due to bubbles of water vapor, and heating cannot be performed efficiently, or heat generation in contact with water Since the body is cooled by water, it does not rise to 100 ° C. or higher, and there is a problem that water vapor cannot be heated sufficiently.

  Furthermore, since the part to be heated by electromagnetic induction is not covered with a metal or a magnetic material, there is a risk of malfunction of a medical device such as a pacemaker.

  The present invention is intended to solve the problems of such a conventional configuration. Heated steam is efficiently generated, and microorganisms such as bacteria and viruses in the air are reliably generated using the steam. In particular, it aims to realize clean air in medical institutions.

  In order to achieve the above object, according to the first problem solving means of the present invention, a reservoir tank for supplying water is disposed in an air purifier, and water is introduced into a heating element heated by electromagnetic induction heating. The gas that has been heated to become water vapor moves upward, and the temperature thereof becomes 250 ° C. or higher by the heating element 2 heated by electromagnetic induction. The heated steam that has reached 250 ° C. or more is blown out from a blowing port installed in the sterilization chamber above the heating element, mixed with air taken in from the outside, and only air is discharged from the discharging port.

  The second solving means of the present invention is that the heating element heated by electromagnetic induction heating is a pipe through which water or water vapor passes in order to perform efficient heating, and is installed in the pipe. It is divided into a heating element for heating only water and a heating element for heating water vapor. It does not necessarily have to be cut, and may be separated thermally. Further, a cavitation trap is provided between the heating element for heating water and the heating element for heating water vapor.

  In the third solution of the present invention, the heating element and the electromagnetic induction part are divided into three parts, a part for heating only water, a part for heating steam, and a part for heating high-temperature steam, in order to achieve efficient heating. The cavitation trap for controlling the flow of water vapor is provided between the heating elements.

According to a fourth solution of the present invention, the sterilization chamber is provided with a fan for taking in external air, and fins for mixing with external air are arranged at the outlet of the heated steam. ing. Instead of the fins, a metal mesh or the like may be used instead of the fins to sufficiently mix with the air from the outside. A mouth for collecting the cooled water vapor was installed, and the sterilization chamber was cooled by installing a single-plate fin or a spiral fin for taking in air from outside and mixing it with the air. A pipe for collecting water vapor to the reservoir tank is provided.

  The fifth solution of the present invention is to heat the heating element by heating by electromagnetic induction, so that no leakage electromagnetic waves are emitted to the outside, and the entire apparatus or the electromagnetic induction coil part is surrounded by metal or magnetic material. ing.

  The operational effects of the first problem solving means are as follows. The water supplied from the reservoir tank fills up to about 1/3 of the pipe heating element, and becomes water vapor by the pipe heating element or the heating element heated by electromagnetic induction heating. The water vapor comes into contact with a heating element heated by electromagnetic induction heating, and the heating temperature easily becomes 250 ° C. or higher. The heated water vapor blows out into the sterilization chamber and is mixed with external polluted air. Since it is 250 ° C or higher, microorganisms present in the polluted air are completely killed and harmful chemical substances are also decomposed and polluted air. From this, microorganisms and harmful substances are removed and detoxified.

  The operational effects of the second problem solving means are as follows. Since the heating element installed in the pipe through which water and water vapor move is separated into a heating element that heats water and a heating element that heats water vapor, water and water vapor can be heated efficiently. It has a structure that can be done. In addition, since the cavitation trap is installed, the gas that has become water vapor efficiently comes into contact with the tube wall and the surface of the heating element, and the temperature of the water vapor can be raised to 250 ° C. or higher.

  The operational effects of the third problem solving means are as follows. Since the electromagnetic induction portion and the heating element are divided into three parts, it becomes possible to match the heating state to each of the different specific heats of water, water vapor, and high-temperature water vapor, and heating with good power efficiency can be performed.

  The operational effects of the fourth problem solving means are as follows. The heated steam having reached 250 ° C. or higher is taken into a sterilization chamber that has taken in outside contaminated air. The heated steam and the external air collide with the single-plate fins or the spiral fins, and become a flow mixed with the air taken in from the outside. Therefore, the heated steam comes into contact with microorganisms and harmful chemical substances in the air with a probability of nearly 100%. Microorganisms such as viruses and bacteria once contacted with a gas of 250 ° C. or higher are killed and the organic matter is decomposed. Also, harmful chemical substances such as formaldehyde are easily pyrolyzed and rendered harmless. At the same time, while traveling a long distance, the heated steam is cooled and turned into water, which is collected through the piping into the reservoir tank.

  The operational effects of the fifth problem solving means are as follows. When electromagnetic induction is caused for heating, electromagnetic waves that have not been used for heating are emitted around the coiled portion. Since the entire device or a portion that causes electromagnetic induction is covered with a metal or a magnetic material, electromagnetic waves do not leak to the outside. Therefore, a phenomenon that causes a malfunction to a medical device such as a pacemaker is not seen.

  Hereinafter, an embodiment will be described with reference to FIG. 1 as an embodiment of the present invention.

  In FIG. 1, 1 is a reservoir tank for storing water, and 2 is connected to the pipe heating element 3 from the reservoir tank. The pipe heating element 3 has a coil 6 on the outside, a heating element 2 completely immersed in water on the inside, a cavitation trap 7 on the heating element 3, a heating element 3 for heating water vapor on the upper part, and an uppermost part. A steam outlet 8 is provided.

  A temperature sensor 8 is provided in the vicinity of the steam outlet 8 in order to control the temperature of the heated steam. A steam outlet is provided in the sterilization chamber 11.

  In the sterilization chamber, the outside air intake port 9 for taking in the contaminated air and the wire mesh filter 9-A are installed at the outside air intake port, so that the outside air and the steam can be mixed efficiently. A discharge port provided in the moving direction of the blowout port and a wire mesh 13 filter 13-A for the discharge port for discharging the air cleaned by the steam is provided. A pipe 14 for cooling the steam and returning water to the reservoir tank is connected to the sterilization chamber and the reservoir tank.

  In FIG. 2, 3 is a pipe heating element that is further heated by flowing water and water vapor, 4 is a heating element 2 that heats only water, and 5 is heat generation for heating water vapor. The body 3 is installed above the heating element 2 or in the direction of water vapor movement, and the 5-A heating element 4 for heating to 200 ° C. or higher is installed above the heating element 3 or in the direction of water vapor movement. A cavitation trap 7-A for controlling the flow of water vapor is installed between the heating element 4 and the heating element 5, and the cavitation trap 7 is installed between the heating element 5 and the heating element 5-A. A coil 6, a coil 6-A, and a coil 6-B that generate electromagnetic induction are disposed outside the heating element 4, the heating element 5, and the heating element 5-A.

Sectional drawing of the air cleaner which shows the Example of this invention Sectional drawing of the heating part divided into three which shows the Example of this invention

1 Reservoir tank 2 Piping 1
3 Piping heating element 1
4 Heating element 2
5 Heating element 3
6 Coil 7 Cavitation trap 8 Steam outlet 9 Outside air intake 9-A Wire mesh 1
10 fan 11 sanitization room 12 fin 13 outlet 13-A wire net 2
14 Piping 2
15 Control and Coil Drive Circuit 16 Temperature Sensor 17 Metal Enclosure

3 Piping heating element 1
4 Heating element 2
5 Heating element 3
5-A Heating element 4
6 Coil 6-A Coil 1
6-B Coil 2
7 Cavitation trap 1
7-A Cavitation trap 2

Claims (5)

  A reservoir tank for storing water is provided, and two or more heating elements that generate heat by electromagnetic induction heating for heating the water introduced from the reservoir tank are installed, and heat generated to heat the gas that has become water vapor The body is installed in the upper part, the steam outlet is provided in the sterilization chamber, the sterilization chamber is provided with a port for taking in air from the outside and a discharge port sterilized by water vapor An air purifier characterized by.   The heating element by electromagnetic induction heating according to claim 1 is provided with a pipe through which water and water vapor move and two or more heating elements installed at the center thereof, and the water of the heating element installed at the center is provided with water. A feature is that a cavitation trap is provided between a heating element to be heated and a heating element to which water vapor is heated.   The heating element and the electromagnetic induction part by electromagnetic induction heating according to claim 2 are divided into a water heating part, a steam heating part, and a high-temperature steam heating part, and a cavitation trap is provided between the heating elements. Features the configuration.   The sterilization chamber according to claim 1 is provided with one or more fans in order to take in contaminated air from the outside, and for safety, a wire net or a filter is provided in front of the fans. A fin is installed in the direction of water vapor movement at the outlet of the nozzle, and a pipe for returning the cooled water to the reservoir tank is provided.   The air cleaner according to claim 1 is characterized in that the whole or the periphery of electromagnetic induction heating is covered with a magnetic material or a metal material.

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