KR20110036246A - Flexible nozzle for sterilization using high pressure and temperature steam - Google Patents

Abstract

PURPOSE: A flexible nozzle for cleaning and sterilization using high-pressure and high-temperature steam is provided to be bent and curved by using a spring tube. CONSTITUTION: A flexible nozzle for cleaning and sterilization using high-pressure and high-temperature steam comprises a tube unit(10) and a coupling unit(20). The tube unit comprises an inner tube(11), a teflon or silicon layer, and an outer tube(12). The inner tube is wound with a metal wire in a spring shape. The teflon or silicon layer is covered on the surface of the inner tube. The outer tube protects the outside of the inner tube covered with the teflon layer or the silicon layer. The outer tube is made of a metal wire mesh of metal material. The coupling unit fixes a tube unit on a steam gun.

Description

Flexible nozzle for sterilization using high pressure and temperature steam

The present invention relates to a flexible nozzle for washing and disinfecting using high temperature and high pressure steam, and more particularly, a curve of a cold / hot water flow pipe of a cold / hot water machine, a purified water pipe of a water purifier, a discharge pipe of a beverage vending machine, and an air suction part of an air conditioner. The present invention relates to a flexible nozzle for cleaning and disinfection, which is inserted into a pipe freely and can be cleaned and disinfected by spraying high temperature and high pressure steam.

Recently, hot and cold water and water purifiers are widely used in offices, schools and homes. The cold and hot water machine is configured to remove the bottled water containing the bottled water by cartridge method, and to heat or cool the water and supply it through the hot and cold water faucet.

In addition, the water purifier is filtered by the filter, osmotic pressure, etc. while directly connected to the faucet and then supplied by heating or cooling the water.

These cold and hot water and water purifiers are suitable for inhabiting various kinds of bacteria or viruses due to the presence of heat and water generated from the heater, so they must be periodically cleaned and disinfected for cleanliness.

As the washing and disinfection method, a simple washing using water and a disinfecting method using chlorine or various disinfectants are used, but there is a limit to disinfection or there is a concern that it may be harmful to health due to the remaining of drugs.

In order to solve the above problems, a method of disinfecting a pipe of a cold / hot water purifier or a water purifier by spraying hot steam has been proposed, which is disclosed in Patent Registration No. 0682606, 'Disinfection apparatus using high pressure steam and its method'.

However, in the disinfection method according to the patent invention, the pipes in which the water flows in the cold / hot water purifier or the water purifier are often bent at almost right angles, so that it is difficult to disinfect and clean all the flow pipes of the cold and hot water using a straight nozzle. There are many.

In particular, since the cold water container or the hot water container is integrally connected to the pipe through which water flows, the nozzle itself cannot be inserted.

In view of this point, the patent proposes a flexible nozzle that can be inserted into a curved pipe of cold and hot water, but its actual configuration is not disclosed.

For example, when a flexible pipe made of a conventional synthetic resin is used as a nozzle, the synthetic resin is likely to be deformed or damaged by steam having a temperature of 150 ° C. or higher, and there is a fear of causing environmental hormones.

In the case of adopting such a flexible nozzle, not only cold and hot water purifiers and water purifiers, but also the pipes through which beverages and water flow in beverage vending machines or air intakes and pipings of air conditioners are equally required.

The present invention was devised in view of the above problems, and can be smoothly inserted into a curved path formed in a pipe of a cold / hot water purifier, a water purifier, a beverage vending machine, or an air intake part of an air conditioner, as well as steam of high temperature and pressure. It is an object of the present invention to provide a flexible nozzle for cleaning and disinfection, which can guarantee safety and reliability even by disinfecting and cleaning by spraying.

In order to achieve the above object, the flexible nozzle for cleaning and disinfection according to the preferred embodiment of the present invention includes an inner tube wound with a wire of a metal material in the form of a spring, and a Teflon layer or a silicon layer applied to the surface of the inner tube. And a tube unit installed to cover the outside of the inner tube to which the Teflon layer or the silicon layer is applied and including an outer tube made of a metal mesh; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the flexible nozzle for cleaning and disinfection includes an inner tube wound with a wire of a metal material in a spring form, and an outer tube formed to surround an outer side of the inner tube and made of a metal mesh wire mesh. And a tube unit comprising a Teflon layer or a silicon layer applied to the surface of the outer tube. And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, a flexible nozzle for cleaning and disinfection includes an inner tube made of a metal mesh, a Teflon layer or a silicon layer applied to a surface of the inner tube, and the Teflon layer or a silicon layer. A tube unit installed to cover an outer side of the coated inner tube and including an outer tube wound around a wire of a metal material in a spring form; And a coupling unit for fixing the tube unit to the steam gun.

The flexible nozzle for cleaning and disinfecting according to another preferred embodiment of the present invention, the inner tube made of a metal mesh of the metal material, and the outer tube is installed to surround the outside of the inner tube and the wire of the metal material in the form of a spring And a tube unit comprising a Teflon layer or a silicon layer applied to the surface of the outer tube. And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the flexible nozzle for cleaning and disinfection includes an inner tube wound with a wire of a metal material in a spring form, and an outer tube formed of Teflon material or silicone resin to surround the outer side of the inner tube. Tube unit comprising a; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the flexible nozzle for cleaning and disinfection includes an inner tube made of a metal mesh and an outer tube formed of Teflon material or silicone resin to surround the outer side of the inner tube. Tube unit; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, a flexible nozzle for cleaning and disinfection includes an inner tube formed of a Teflon material or a silicone resin, and an outer tube installed to surround the outer side of the inner tube and made of a metal mesh wire mesh. Tube unit; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the flexible nozzle for cleaning and disinfection includes an inner tube formed of a Teflon material or a silicone resin, and an outer tube formed to surround an outer side of the inner tube, and wound with a metal wire in a spring form. A tube unit comprising a tube; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the inner tube winding the wire of the metal material in the form of a spring, a tube made of Teflon material or silicone resin formed to surround the inner tube, and made of the Teflon material or silicone resin A tube unit installed to surround the tube and including an outer tube made of a metal mesh wire; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, to wrap the inner tube made of a metal mesh of the metal material, the tube made of Teflon material or silicone resin formed to surround the inner tube, and the tube made of Teflon material or silicone resin A tube unit installed and including an outer tube wound around a metal wire in a spring form; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the inner tube winding the wire of the metal material in the form of a spring, the outer tube is formed to surround the inner tube and made of a metal mesh of the metal material, and formed to surround the outer tube A tube unit comprising a tube made of Teflon material or silicone resin; And a coupling unit for fixing the tube unit to the steam gun.

According to another preferred embodiment of the present invention, the inner tube made of a metal mesh of the metal material, the outer tube is installed to surround the inner tube and the wire wound of the metal material in a spring form, and formed to surround the outer tube A tube unit comprising a tube made of Teflon material or silicone resin; And a coupling unit for fixing the tube unit to the steam gun.

Preferably, the coupling unit may include a first coupling member having a hollow through which steam passes, and having a detachable portion inserted into and detached from a coupling hole of the steam gun; A second coupling member for fixing the tube unit to the first coupling member; And an O-ring for maintaining the airtightness of the tube unit.

More preferably, the coupling unit may include a fixed shell having a large diameter end into which the tube unit is inserted and supported in contact with the first coupling member, and a small diameter end in contact with the outer circumferential surface of the tube unit. And the small diameter end presses and fixes an outer circumferential surface of the tube unit by a pressing inclined surface formed in the second coupling member when the first coupling member and the second coupling member are coupled to each other. .

As another alternative, the coupling unit may be coupled to the steam gun by screwing.

The flexible nozzle for washing and disinfecting using high temperature and high pressure steam according to the present invention is smooth even if a curved path exists in a cold / hot water flow pipe of a cold / hot water machine, a purified water pipe of a water purifier, a discharge pipe of a beverage vending machine, and an air inlet or a pipe of an air conditioner. Disinfection and cleaning can be performed by insertion.

In particular, when the length of the flexible nozzle for cleaning and disinfection according to the present invention is lengthened, the nozzle can be inserted even inside the cold water container or the hot water container formed integrally with the flow pipe, thereby cleaning the inside of the container.

Nevertheless, the flexible nozzle for cleaning and disinfection according to the present invention can be bent and bent freely by the spring tube formed on the inside, while maintaining the shape by the wire mesh tube formed on the outside to enable a stable structure and operation. Do.

The flexible nozzle for cleaning and disinfecting according to the present invention is made of a metal material, so even when disinfection is performed by spraying high temperature and high pressure steam, no damage or deformation occurs, and no emission of harmful substances such as environmental hormones occurs. .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 to 3 show a schematic configuration of a flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam according to a preferred embodiment of the present invention. Here, Figure 1 is a perspective view showing the appearance of the flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam according to the present invention, Figure 2 is an exploded perspective view of each part, Figure 3 is a cross-sectional view.

Referring to the drawings, the flexible nozzle for cleaning and disinfection according to a preferred embodiment of the present invention is fixed to the tube unit 10 and the tube unit 10, which is injected while the high-temperature high pressure steam passes through the steam as described below The coupling unit 20 is mounted on the gun 100.

The tube unit 10 is configured to be flexible, and as shown, has a multilayer structure of the inner tube 11 and the outer tube 12.

The inner tube 11 is manufactured by winding a wire of a metal material such as stainless steel in a spring form. In this case, the thickness and winding diameter of the metal wire may be appropriately set according to the diameter or size of the flow pipe formed in the cold or hot water purifier or the water purifier to be disinfected and washed.

As described above, the inner tube 11 can be bent freely by winding the metal wire in the form of a spring.

In addition, a surface of the inner tube 11 is coated with a Teflon layer made of polytetrafluoroethylene (PTFE) or a silicone layer 13 coated with a silicone resin.

The Teflon layer or silicon layer 13 fills the gap between the metal wires so that the high temperature and high pressure steam supplied through the inside does not leak out. Teflon is a heat-resistant material that can withstand temperatures up to about 300 ° C, so it will not deform or damage even when it comes in contact with hot steam.

In addition, the silicone resin is a thermoplastic synthetic resin in which silicon in the form of siloxane bonds (Si-O bonds) in which silicon and oxygen are alternated is used as a skeleton, and methyl, phenyl, and hydroxy groups are added to silicon.

Nevertheless, since the Teflon layer or the silicon layer 13 is elastic, the inner tube 11 may still be bent.

The Teflon layer or silicon layer 13 is wrapped by an outer tube 12, which is a wire mesh tube made of a metal material such as stainless steel. Preferably, the wire mesh tube is made of a tightly woven or mesh shape of the horizontal wire and the vertical wire, and has the flexibility to bend the inner tube (11).

The coupling unit 20 may include a first coupling member 21 coupled to a coupler of the steam gun 100 (see 110 in FIG. 5), and the tube unit may be connected to the first coupling member 21. 10) a second coupling member 22 for securing it.

The first coupling member 21 is formed with a hollow through which high temperature and high pressure steam passes, and forms a hexagon nut-shaped body to apply rotational force using a tool such as a spanner.

In addition, the first coupling member 21 has a detachable portion 23 inserted into and detached from the coupling port 110 of the steam gun 100. The outer surface of the detachable portion 23 forms a fallopian tube shape, the diameter of which gradually increases toward an end portion.

The first coupling member 21 has a threaded portion 24 formed therein, and the second coupling member 22 may be screwed thereto.

The second coupling member 22 has, for example, a hollow hole to which the tube unit 10 can be coupled to a hexagon nut-shaped body.

More specifically, the inner surface of the second coupling member 22 is formed with a screw portion 25 that is screwed with the threaded portion 24 of the first coupling member 21, the tube unit 10 O-ring 26 is seated portion 27 is formed so as to maintain the airtight when fixing the.

In addition, the pressure inclined surface 28 is formed from the seating portion 27 to the threaded portion 25, which is to press the fixing shell 29 to be described below to fix the tube unit 10.

The fixing shell 29 is made of a metal material having self-elasticity, such as bronze, and when the first coupling member 21 and the second coupling member 22 are mutually coupled as described below, It presses and fixes the outer circumferential surface of the tube unit 10.

To this end, the fixing shell 29 is formed with a hollow into which the tube unit 10 is inserted, and the hollow has a fallopian tube shape whose diameter gradually increases from one end to the other end.

The large diameter end 29a of the fixing shell 29 is supported in contact with the first coupling member 21, while the small diameter end 29b is pressed in contact with the outer circumferential surface of the tube unit 10. . Accordingly, the fixing shell 29 is bent to protrude radially outward and is configured to contact the pressure inclined surface 28 of the second coupling member 22 as described below.

Then, look at the manufacturing method of the flexible nozzle for cleaning and disinfection according to a preferred embodiment of the present invention having the configuration as described above.

First, the inner tube 11 is manufactured by winding a metal wire in a continuous tube shape to make the tube unit 10.

Next, Teflon is applied to the surface of the wound inner tube 11 to form a Teflon layer or a silicon layer 13. At this time, the thickness of the Teflon layer or the silicon layer 13 may be appropriately set over 0.2 ~ 1.0mm.

After the Teflon layer or silicon layer 13 is applied, the Teflon layer or silicon layer 13 is wrapped with an outer tube 12 made of a wire mesh tube. Preferably, the Teflon layer or silicon layer 13 is applied to the inner tube 11 and the outer tube 12 by applying the Teflon layer or the silicon layer 13 and wrapping it with a wire mesh tube, and then curing the Teflon layer or the silicon layer 13. ) To bond.

More preferably, by welding the interface at the ends of the inner tube 11 and the outer tube 12, both can be more stably coupled.

When the manufacturing of the tube unit 10 is completed by the above process, as shown in FIG. 3, the end of the tube unit 10 is inserted into the hollow of the second coupling member 22. In this case, the coupling surface is sealed by the O-ring 26 made of silicon or rubber through the seating portion 27 of the second coupling member 22.

Next, the first coupling member 21 is coupled to the second coupling member 22. The first and second coupling members 22 may be joined by threads 24 and 25 formed at corresponding points, wherein the first coupling member 21 and the second coupling member 22 are coupled to each other. The fixing shell 29 is interposed therebetween.

That is, the end of the tube unit 10 is inserted into the hollow on the side of the small diameter end 29b of the fixing shell 29 to protrude through the large diameter end 29a. In this state, when the first coupling member 21 and the second coupling member 22 are coupled to each other, as shown in FIG. 3, the large diameter end 29a of the fixing shell 29 may 1 is supported by the coupling member 21, and the small diameter end 29b is in contact with the outer circumferential surface of the tube unit 10. As shown in FIG.

At the same time, the outer surface of the fixed shell 29 is in contact with the pressing inclined surface 28 of the second coupling member 22, in this state the first coupling member 21 and the second coupling member ( The more the 22 is tightened to each other, the more the inclined surface 28 presses the outer surface of the fixed shell 29, so that the smaller diameter end 29b of the fixed shell 29 is the end of the tube unit 10. It is to be fixed by pressing the outer peripheral surface.

In the above, the manufacture of the flexible nozzle for cleaning and disinfection according to the present invention is completed.

According to another preferred embodiment of the present invention, the configuration of the inner tube 11 and the outer tube 12 may be variously modified.

As an example, the inner tube 11 may be made of a wire mesh tube, while the outer tube 12 may be a spring tube. In addition, the Teflon layer or the silicon layer 13 may be formed on the outer surface of the outer tube 12 instead of the outer surface of the inner tube 11.

According to another embodiment of the present invention, any one of the inner tube 11 or the outer tube 12 is composed of a tube made of Teflon material or silicone resin, the other may be a spring tube or wire mesh tube have.

In addition, the inner tube 11 and the outer tube 12 may be a spring tube or a wire mesh tube manufactured by winding a metal wire, and a tube made of Teflon material or silicone resin may be coupled between or outside them.

According to the present invention, the spring tube, the wire mesh tube, the teflon layer or the silicon layer, and the tube made of a Teflon material or a silicone resin may be combined with each other in various forms to constitute a multilayer.

Next, an example of using a flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam having the above configuration will be described.

4 shows a state in which the washing and disinfecting flexible nozzle according to the preferred embodiment of the present invention is equipped with a steam gun 100. The cleaning and disinfecting flexible nozzle according to the present invention may be detachably coupled by inserting the first coupling member 21 into the coupler 110 of the steam gun 100.

As is known, the steam gun 100 is connected to a steam generating device for generating steam of high temperature and high pressure to receive steam continuously, and the user may inject or block steam by manipulating the trigger 120 by hand. Since the configuration of the steam generator and the steam gun 100 is already well known in the art, further description will be omitted.

5 shows a state in which the flexible nozzle for cleaning and disinfection according to the present invention is coupled to the coupler 110 of the steam gun 100 in more detail.

Referring to the drawings, the inner surface of the coupler 110 of the steam gun 100 is provided with a plurality of elastic balls 132 that are pressed radially inward by the elastic member 131.

When the detachable portion 23 of the first coupling member 21 of the flexible nozzle for cleaning and disinfection is aligned and inserted into the coupling hole 110 of the steam gun 100, the detachable portion 23 An outer circumferential surface having a large diameter is advanced while pressing the elastic ball 132.

Then, as the elastic ball 132 moves in the radially outward direction, the detachable part 23 may be inserted into the coupler 110 of the steam gun 100 via the elastic ball 132.

Subsequently, since the detachable portion 23 has a fallopian tube shape in which the diameter gradually decreases, the elastic ball 132 presses the detachable portion 23 radially inward. The pressing force of the elastic ball 132 leads the first coupling member 21 more and more into the coupling hole 110 due to the inclination of the detachable portion 23, so that the end of the first coupling member 21 is By contact with the steam gun 100 is completed the coupling of the flexible nozzle.

On the contrary, in the case where the flexible nozzle is to be separated from the steam gun 100, when the nozzle is pulled in the opposite direction, the first coupling member 21 is coupled to the first coupling member 21 while the elastic ball 132 is moved in the opposite process as described above. 110).

In addition, although not shown in detail in the drawings, the coupling unit 20 may be coupled to the coupler 110 of the steam gun 100 by a conventional screw coupling.

As described above, an embodiment using the cleaning and disinfecting flexible nozzle of the present invention mounted on the steam gun 100 will be described with reference to FIG. 6.

6 is a diagram schematically showing an internal configuration of a conventional water purifier. As shown, the water purifier includes a purified water tank 30 for storing purified water, a cold water container 31 and a hot water container 32 for cooling or heating water supplied from the purified water tank 30 to a predetermined temperature. ), And a cold water tap 33 and a hot water tap 34 for supplying the water stored in the cold water container 31 and the hot water container 32, respectively.

The purified water tank 30, the cold water container 31, and the hot water container 32 are connected to the flow pipe 35, respectively, and purified water flows through the flow pipe. Similarly, the water stored in the cold water container 31 and the hot water container 32 is supplied to the nipples 33 and 34 through the cold water pipe 36 or the hot water pipe (37 in FIG. 8).

After the cold water and hot water taps 33 and 34 are removed to clean and disinfect the water purifier, the washing and disinfecting according to the present invention is performed through the pipes 36 and 37 as shown in FIGS. 7 and 8. Insert the flexible nozzle. Here, FIG. 7 shows an example of cleaning the cold water pipe 36 and the cold water container 31, and FIG. 8 shows an example of cleaning the hot water pipe 37 and the hot water container 32. However, these drawings are merely examples for explaining the embodiment of the pipe cleaning, so various types of cold and hot water purifiers, water purifiers, air conditioners, draft beer dispensers, washing machines, refrigerators, fan coils, ice makers, coffee machines, soft ice cream makers, bidets or hoods. It should be understood that the same can be applied to the pipe installed in the back.

As can be seen in Figures 7 and 8, the flexible nozzle for cleaning and disinfection according to the present invention has a characteristic that is flexibly flexible, even if the pipe 36, 37 is bent can be inserted smoothly.

In particular, when the length of the flexible nozzle is set long, it can reach the inside of the cold water container 31 and the hot water container 32, which was not able to be cleaned at all, and can be cleaned and disinfected.

When spraying the steam by pulling the trigger 120 of the steam gun 100 in the state where the nozzle is inserted as described above, to the depth of the pipe 36, 37 and the vessel 31, 32 through the end of the nozzle The steam can be sprayed for clean and complete cleaning and disinfection.

Nevertheless, the flexible nozzle for cleaning and disinfecting according to the present invention is composed of a heat-resistant metal material and Teflon, so that even when exposed to the high temperature of steam, it is possible to guarantee the operation reliability without being damaged or deformed.

In addition, when the nozzle is repeatedly moved back and forth while simultaneously spraying steam as described above, the surface of the nozzle and the pipe or the inside of the container may be rubbed with each other to more effectively remove scales, debris or mold.

Although only the cleaning and disinfection process for the water purifier has been described in the present specification as an example, the flexible nozzle for cleaning and disinfection according to the present invention may be equally applicable not only to a water purifier but also to a pipe or internal cleaning of a cold / hot water dispenser, a beverage vending machine, or an air conditioner. to be.

Although the present invention will be described in detail with reference to the following drawings, these drawings illustrate preferred embodiments of the present invention, and the technical concept of the present invention is not limited to the drawings and should not be interpreted.

1 is a perspective view schematically showing the configuration of a flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam according to a preferred embodiment of the present invention.

2 is an exploded perspective view schematically showing the configuration of a flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam according to a preferred embodiment of the present invention.

3 is a cross-sectional view schematically showing the configuration of a flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam according to a preferred embodiment of the present invention.

4 is a perspective view schematically showing a state in which a flexible nozzle for cleaning and disinfecting using high temperature and high pressure steam according to a preferred embodiment of the present invention is mounted on a steam gun.

FIG. 5 is a partial perspective view illustrating a configuration in which a flexible nozzle for washing and disinfecting using high temperature and high pressure steam is mounted on a steam gun according to a preferred embodiment of the present invention.

6 is a view schematically showing the internal configuration of a general water purifier.

7 and 8 are views for explaining the process of disinfecting the water purifier shown in Figure 6 using a flexible nozzle for cleaning and disinfection using high temperature and high pressure steam according to a preferred embodiment of the present invention.

Claims (17)

Inner tube 11 wound with a wire of a metal material in the form of a spring, Teflon layer or silicon layer 13 applied to the surface of the inner tube 11, and the inner tube of the Teflon layer or silicon layer A tube unit 10 installed to surround the outside and including an outer tube 12 made of a metal mesh; And And a coupling unit (20) for fixing the tube unit (10) to the steam gun (100). It includes an inner tube wound around the wire of the metal material in the form of a spring, an outer tube formed to surround the outside of the inner tube and made of a wire mesh of the metal material, and a Teflon layer or silicon layer applied to the surface of the outer tube. Tube unit; And And a coupling unit for fixing the tube unit to the steam gun. An inner tube made of a metal mesh of a metal material, a Teflon layer or a silicon layer applied to the surface of the inner tube, and installed to surround the outer side of the inner tube to which the Teflon layer or silicon layer is applied, the wire of the metal material in the form of a spring A tube unit comprising an outer tube wound around; And And a coupling unit for fixing the tube unit to the steam gun. Including an inner tube made of a metal mesh of the metal material, the outer tube which is installed to surround the outer side of the inner tube and wound the wire of the metal material in a spring form, and a Teflon layer or silicon layer applied to the surface of the outer tube Tube unit; And And a coupling unit for fixing the tube unit to the steam gun. A tube unit including an inner tube wound with a wire made of a metal material in a spring shape, and an outer tube formed of a Teflon material or a silicone resin to surround the outer side of the inner tube; And And a coupling unit for fixing the tube unit to the steam gun. A tube unit including an inner tube made of a wire mesh made of a metal material, and an outer tube formed of a Teflon material or a silicone resin to surround the outside of the inner tube; And And a coupling unit for fixing the tube unit to the steam gun. A tube unit including an inner tube formed of a Teflon material or a silicone resin, and an outer tube installed to surround the outer side of the inner tube and made of a metal mesh of a metal material; And And a coupling unit for fixing the tube unit to the steam gun. A tube unit including an inner tube formed of a Teflon material or a silicone resin and an outer tube which is installed to surround the outer side of the inner tube, and which is wound with a metal wire in a spring form; And And a coupling unit for fixing the tube unit to the steam gun. An inner tube 11 wound around a wire of a metal material in a spring form, a tube made of Teflon material or silicone resin formed to surround the inner tube 11, and installed to surround the tube made of Teflon material or silicone resin. A tube unit 10 including an outer tube 12 made of a metal mesh wire; And And a coupling unit (20) for fixing the tube unit (10) to the steam gun (100). An inner tube made of a metal mesh wire, a tube made of Teflon material or silicone resin formed to surround the inner tube, and a tube made of Teflon material or silicone resin are installed to surround the wire, and the wire of the metal material is wound in a spring form. A tube unit comprising one outer tube; And And a coupling unit for fixing the tube unit to the steam gun. An inner tube 11 wound around a wire of a metal material in the form of a spring, and an outer tube 12 formed of a wire mesh made of a metal material and wrapped to surround the inner tube 11 and the outer tube 12. A tube unit 10 including a tube made of formed Teflon material or silicone resin; And And a coupling unit (20) for fixing the tube unit (10) to the steam gun (100). Including an inner tube made of a metal mesh of the metal material, the outer tube is installed to surround the inner tube and the wire wound of the metal material in a spring form, and a tube made of Teflon material or silicone resin formed to surround the outer tube Tube unit; And And a coupling unit for fixing the tube unit to the steam gun. The method according to any one of claims 1, 3, 9 or 10, Cleaning and disinfecting flexible nozzle further comprises a Teflon layer or a silicon layer applied to the surface of the outer tube. 13. The method according to claim 11 or 12, Cleaning and disinfecting flexible nozzle further comprises a Teflon layer or a silicon layer applied to the surface of the inner tube. The method according to any one of claims 1 to 12, The coupling unit, A first coupling member 21 having a hollow through which steam passes and having a detachable portion 23 inserted into and detached from the coupling port 110 of the steam gun 100; A second coupling member (22) for fixing the tube unit (10) to the first coupling member (21); And O-ring (26) for maintaining the airtightness of the tube unit (10); cleaning and disinfection flexible nozzle comprising a. The method of claim 15, The tube unit is inserted and has a large diameter end 29a which is supported in contact with the first coupling member 21 and a small diameter end 29b which is in contact with the outer circumferential surface of the tube unit 10. A fixed shell 29, When the first coupling member 21 and the second coupling member 22 are coupled to each other, the small diameter end 29a is formed by the pressing inclined surface 28 formed in the second coupling member 22. Washing and disinfecting flexible nozzle, characterized in that for fixing by pressing the outer peripheral surface of the tube unit (10). The method according to any one of claims 1 to 12, The coupling unit is a flexible nozzle for cleaning and disinfection, characterized in that coupled to the steam gun by screwing.

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