KR102438899B1 - Ultrasonic cleaner including a spray tube having a plurality of spray nozzles formed - Google Patents

Abstract

An ultrasonic cleaner including a spray tube having a plurality of spray nozzles, according to the present invention, comprises: a cleaning tub for accommodating cleaning water and a cleaning object and having an ultrasonic vibrator installed thereon to clean the cleaning object in an ultrasonic manner; a spray tube extending along an inner wall of the cleaning tub to inject water into the cleaning tub so as to generate a vortex, wherein the spray tube has a plurality of through-holes formed at regular intervals toward the inner space of the cleaning tub; and spray nozzles mounted in the through-holes. According to the ultrasonic cleaner including a spray tube having a plurality of spray nozzles according to the present invention, for convenience of installation and maintenance, the plurality of spray nozzles are installed at regular intervals on the spray tube while the spray tube is exposed, such that the more powerful and uniform vortex can be generated.

Description

Ultrasonic cleaner including a spray tube having a plurality of spray nozzles formed {Ultrasonic cleaner including a spray tube having a plurality of spray nozzles formed}

The present invention relates to an ultrasonic cleaner including a spray tube having a plurality of spray nozzles formed therein, and more particularly, a spray tube for spraying water to generate a vortex for efficient cleaning of an object to be washed in the wash water is exposed in the inner space of the washing tank It relates to an ultrasonic cleaner that is installed in such a way that it provides convenience for installation and maintenance, and is equipped with a plurality of spray nozzles at regular intervals on the spray pipe to generate a more powerful and uniform vortex.

As is well known, an ultrasonic cleaner is a device for washing objects to be washed, such as dishes, due to a cavitation phenomenon that is generated while providing fine vibrations using washing water contained in a washing tank through an ultrasonic vibrator as a medium.

These ultrasonic cleaners were mainly used for washing dishes in the past, but now they have been developed to provide a function of washing dishes, as well as washing foreign substances or pesticides from foods such as fruits and vegetables.

Here, the ultrasonic washing machine for washing food may additionally provide a function of generating a vortex by spraying water such as water into the washing water in order to sink food floating on the surface of the washing water below the surface of the washing water, unlike the tableware.

Domestic Patent No. 2152561, the ultrasonic cleaner for agricultural and fishery products based on vortex generation with bubble cleaning function, which accommodates washing water and agricultural and fishery products, is equipped with an ultrasonic vibrator, which washes agricultural and fishery products in an ultrasonic manner; a bubble generator installed on the bottom surface of the washing tub to spray bubbles into the washing tub; a vortex generator installed on one side wall of the washing tank to generate a vortex in the washing water; It is disclosed that the ultrasonic vibrator and the controller for controlling the operation of the bubble generator and the vortex generator provide triple excellent cleaning power by delivering not only ultrasonic waves but also bubbles and vortices to agricultural and fishery products.

In the above technology, the vortex is generated by spraying water at a certain pressure from a pipe extending in the horizontal direction with the water surface in the washing tank. Since the vortex has a specific directionality, the vortex is generated only in one part of the water surface, which may cause food to be drawn to one side or generate only a weak vortex.

Therefore, the spray tube is installed in an exposed manner in the inner space of the washing tank to provide convenience for installation and maintenance, and a plurality of spray nozzles are installed at regular intervals in the spray tube to generate a more powerful and uniform vortex. The reality is that there is a need to develop an ultrasonic cleaner.

The present invention has been devised to overcome the problems of the above technology, and the spray tube is exposed inside the washing tank to provide convenience for installation and maintenance, and a plurality of spray nozzles are mounted at regular intervals on the spray tube to make it more powerful and A main object is to provide an ultrasonic cleaner capable of generating a uniform vortex.

Another object of the present invention is to strengthen the spraying power of water while having the convenience of installation by specializing in a structure having an exposed part and an extended part without forming the spray nozzle integrally with the spray pipe, and then mounting it in the through hole of the spray pipe by fitting it. will do

Another object of the present invention is to differentially treat the diameters of the spray nozzles formed along the longitudinal direction of the spray pipe and further provide a tapered structure to ensure uniformity of pressure for spraying water from each spray nozzle.

It is a further object of the present invention to provide a connector capable of stably fixing the injection tube to the inner wall of the washing tank while providing the injection tube as the first and second injection tubes.

In order to achieve the above object, an ultrasonic cleaner including a spray tube having a plurality of spray nozzles formed therein according to the present invention includes: a washing tank for accommodating washing water and a washing object, an ultrasonic vibrator is installed to wash the washing object in an ultrasonic manner; a spray pipe extending along the inner wall of the washing tub to generate a vortex by spraying water into the washing tub, the injection pipe having a plurality of through-holes penetrating at regular intervals toward the inner space of the washing tub; and a spray nozzle mounted on the through hole.

In addition, the injection nozzle is characterized in that it includes an exposed portion surrounding the outer periphery of the through hole, and an extension portion bent at an end of the exposed portion and extending through the through hole to the inside of the injection pipe.

In addition, the injection pipe is composed of first and second injection pipes extending from the left and right sides of the washing tank, respectively, and the ultrasonic cleaner is attached to the inner wall of the washing tank between the first and second injection pipes. The attachment part extending along the extension direction of the first and second injection pipes in a state of being extended in a state where the coupling hole, which is bent at the left and right ends of the attachment part, respectively, to which the ends of the first and second injection pipes are coupled, respectively, is penetrated It is characterized in that it includes; a connector including a connection part.

According to the ultrasonic cleaner including the injection pipe formed with a plurality of injection nozzles according to the present invention,

1) For the convenience of installation and maintenance, a plurality of spray nozzles are mounted at regular intervals on the spray tube in a state where the spray tube is exposed, so it has the advantage of generating a more powerful and non-biased vortex,

2) It is possible to provide uniform and stable water spraying pressure for each spray nozzle,

3) The injection tube extends in two directions, not in one direction, so that the injection pressure difference due to the difference in the distance between the injection nozzles can be adjusted.

4) It has the effect of providing a base on which the injection nozzle can be stably fixedly mounted without being easily separated from the injection pipe.

1 is a perspective view illustrating a first embodiment in which an injection tube is formed in an inner space of a washing tank of an ultrasonic cleaner of the present invention;
2 is a perspective view showing a second embodiment in which a spray tube is formed in the inner space of the washing tank of the ultrasonic cleaner of the present invention.
3 is an enlarged view of the spray nozzle;
Figure 4 is a perspective view showing a state in which the extension of the spray nozzle extends into the hollow of the spray pipe.
5 is a cross-sectional view showing an improved structure of the spray nozzle.
Figure 6 is a perspective view showing a rotatable structure of the injection pipe.
7 is a perspective view illustrating first and second injection tubes and a connector;
8 is a cross-sectional view showing the structure of the packing fitted between the injection nozzle and the injection pipe.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and like reference numbers in each figure refer to like components.

1 is a perspective view illustrating a first embodiment in which an injection tube is formed in the inner space of the washing tub of the ultrasonic cleaner of the present invention, and FIG. 2 is a second embodiment in which the injection tube is formed in the internal space of the cleaning tub of the ultrasonic cleaner of the present invention. It is a perspective view.

As can be seen from FIGS. 1 and 2 , the washing machine of the present invention is based on a washing tank 10 , a spray pipe 100 , and a spray nozzle 130 .

The washing tank 10 has a three-dimensional shape including a hollow, that is, an internal space that can contain or take out washing water and a washing object while the upper part is open, like the known ultrasonic cleaners for restaurants or industrial use. Although it may exist in a variety of types, FIGS. 1 and 2 show a rectangular parallelepiped structure in which four sidewalls and a bottom surface are blocked in a state in which the upper surface is open.

In the present invention, a 'washing object' refers to an object to be washed in a washing tank, and there are agricultural products, fruits, aquatic products, and the like. The washing target is not limited to a specific type as long as it is a target for removing foreign substances, insects, and pesticides by washing with washing water.

In addition, washing water generally refers to water that is easy to obtain in restaurants or kitchens, but is not necessarily limited to pure water and may include an additional component capable of increasing washing power.

An ultrasonic vibrator 20 for generating ultrasonic waves is mounted on at least one sidewall of the washing tank 10 .

The ultrasonic vibrator 20 generates ultrasonic waves to remove foreign substances to be cleaned by cavitation caused by the inherent micro-vibrations of the ultrasonic waves, and also serves to wipe off residual substances such as pesticides.

The ultrasonic vibrator 20 may be installed on one side of the washing tub 10 in a state in which a plurality of groups are processed, for example, it may be installed on one or both side walls of the washing tub 10, or on the bottom surface. and is not limited to this number and location.

However, in order to organically link with the bubble generator installed in the washing tank 10, it is preferable that the bubble generator is installed on the bottom surface of the washing tank where the bubble injection pipe is disposed.

Although not shown in the drawings, the above-mentioned bubble generator may be installed on the bottom surface of the washing tub 10 , which is installed on the bottom surface of the washing tub 10 to spray bubbles into the washing tub 10 . perform the function

Such a bubble generator may have a variety of well-known structures may be applied, and as an example, a structure including a bubble supply means equipped with an air generator, a pump, and a bubble injection pipe may be presented.

The spray pipe 100 of the present invention extends along the inner side of the side wall of the washing tub 10, that is, along the inner wall to supply water to the washing tub 10. It is a conduit in which a plurality of through-holes 101 are formed.

At this time, the water serves as a medium for generating a vortex, and may be composed of the same component as the washing water or may be composed of water that is widely used in general.

In the embodiment of FIG. 1, the injection pipe 100 is extended along the width direction (horizontal direction based on the washing water surface) of the inner surface of one side wall, that is, the upper part of the inner wall in the inner space of the washing tank 10, and , in the embodiment of FIG. 2 , a structure in which the injection pipe 100 extends along the width direction (horizontal direction based on the washing water level) of the lower portion of the inner wall in the internal space of the washing tank 10 is presented.

In this way, the injection pipe 100 may be mounted on the upper or lower part of the inner wall in the inner space of the washing tank 10, through which the above-mentioned bubble generator is installed, the washing surface (hereinafter, also referred to as 'sleep'). It is possible to select and install the installation positions shown in FIGS. 1 and 2 according to the reference height, the mounting position of the ultrasonic vibrator, the vortex generating position, and the like.

A spray nozzle 130 is installed in the through hole 101 of the spray pipe 100 to spray water supplied to the spray pipe 100 into the inner space of the washing tank 10 .

The basic structure of the ultrasonic cleaner of the present invention described above will be described in comparison with a structure in which a spray tube passes outside the washing tank and supplies water through a water supply hole that penetrates one side of the washing tank in a known ultrasonic cleaner as follows.

A known washing machine (ultrasonic washing machine) sprays water through a vortex jet tube having only one or two nozzles, so even if a vortex is generated by spraying water such as water through the nozzle by increasing the water pressure, only a fraction of the total area of the washing tank There is a problem that the vortex occurs only in the vortex or the vortex is generated by being biased to one side.

In contrast, the ultrasonic cleaner of the present invention can provide a more powerful function than the known ultrasonic cleaner, particularly in terms of generating a vortex.

That is, the ultrasonic cleaner of the present invention can generate a vortex in the washing tub 10 while spraying water. functions to subside.

In general, a washing object such as fruits or vegetables has a specific gravity lower than that of water and floats on the surface of the washing water made of water. If it is not properly delivered to the machine, it will not be possible to perform a smooth cleaning.

Therefore, the injection pipe 100 of the present invention injects water into the washing water to generate a vortex near the water surface of the washing water to remove foreign substances from the washing object by transferring the impact amount by the vortex, as well as when the washing object is instantaneously placed on the surface of the washing water. By allowing it to sink downward, the washing object is eventually sufficiently immersed in the washing water to provide a basis for sufficiently contacting the ultrasonic wave or bubble to the washing object.

In particular, in the injection pipe 100 of the present invention, a plurality of injection nozzles 130 are formed at regular intervals along the extending direction of the injection pipe 100 , so that in the washing tub 10 , it is not biased to one side. It is possible to provide a characteristic that can generate a vortex in the washing tank (10).

In addition, since the injection pipe 100 is exposed without being buried in the washing tank 10, it is possible to provide convenience of installation as well as maintenance/repair, and, as will be described later, the advantage of conveniently controlling the spray direction of water There is this.

3 is an enlarged view of the spray nozzle, and FIG. 4 is a perspective view illustrating a state in which an extension of the spray nozzle extends into the hollow of the spray tube.

As can be seen from FIG. 3 , the spray nozzle 130 of the present invention has an exposed portion 131 surrounding the outer periphery of the through hole 101 , and is bent at the end of the exposed portion 131 to form the through hole 101 . It includes an extension 132 extending to the inside (hollow) of the injection pipe 100 past.

That is, in a state in which the cross-sectional shape of the injection nozzle 130 is the same as or similar to the 'T' shape, referring to FIG. 4 , the extension part 132 extends to a point in the inner space of the injection pipe 100 . It can be seen that taking

The spray nozzle 130 is inserted into the through hole 101 and then welded or otherwise attached to the spray pipe 100 by adhering an industrial adhesive. That is, the mounting method of the spray nozzle 130 is not limited to a specific method.

The spray nozzle 130 of the present invention is not at a level partially extended or exposed from the outside toward the spraying direction of water like a known nozzle, but extended by a sufficient length by utilizing the space (hollow) inside the spray pipe 100. have characteristics.

According to this, when the water passing through the injection pipe 100 enters the pipeline in the extension part 132 , the straightness can be strengthened in proportion to the sufficient extension length of the extension part 132 , so that the water supply performance and the vortex strength are unique. function can be provided.

5 is a cross-sectional view illustrating an improved structure of a spray nozzle.

It can be seen that the injection pipe 100 of the first and second embodiments disclosed in FIGS. 1 and 2 described above has a structure in which only one end is opened, not both ends.

That is, the open end of the spray nozzle 130 may be an inlet through which water is supplied from a water supply tank (not shown) or an external water supply source, and the blocked portion on the opposite side may be referred to as an end.

In the structure of the injection pipe 100, that is, in a structure extending long in one direction, the water pressure at the end side is lower than the inlet side where the water first enters, that is, the end side injection nozzle ( 130) may lower the injection pressure of the water, which may lead to a concern that the vortex may be biased in a specific direction or that the water flow in the washing tank 10 will have unidirectional rotation or fluidity.

In order to prevent this problem, as can be seen from FIG. 5 , the diameter of the extension part 132 is preferably processed so that the diameter increases sequentially as it progresses from the inlet to the end of the injection pipe 100 .

In other words, as a difference in inner diameter of the plurality of extensions 132 , it means that the diameter of the extension 132 around the end of the injection pipe 100 is larger than that around the inlet of the injection pipe 100 .

This is in consideration of the supply direction of water from the injection pipe 100, and since the water reaches the inlet spray nozzle 130 first, it is possible to prevent an increase in the amount of water sprayed from the inlet spray nozzle 130. can provide

In addition, when the back pressure generated together with the repulsive force of the water repelled from the end of the injection pipe 100 is applied at the time when a certain time has elapsed after the supply of water, the time difference is set from the end side of the injection pipe 100 to the inlet side. As a result, the local back pressure applied to the end-side spray nozzle 130 may increase due to the cause of the back pressure, so the local back pressure is resolved and ultimately the water at each location of the spray pipe 100 where the spray nozzle is installed. In order to uniformly match the injection pressure, the diameter of the injection nozzle 130 on the end side of the injection pipe 100 , specifically the extension part 132 is relatively larger than the diameter of the inlet extension part 132 .

At this time, the difference in diameter of each of the extensions 132 is set to increase by 5 to 20% of that of the adjacent extensions 132, not by abrupt differences such as 2 times or 3 times, to prevent additional pressure imbalance from occurring. It is preferable to do

According to this structure, the problem that the spraying amount is not uniform due to spraying water at different pressures from the extension part 132 having the same diameter is solved, and as a result, uniformity and stability of water spraying from each spray nozzle 130 . It can provide characteristics that can guarantee at the same time.

Furthermore, as can be seen from FIG. 5 , the portion extending along the outer circumferential surface from the inner circumferential surface of the injection pipe 100 among the extension portion 132 is tapered from the inner circumferential surface toward the outer circumferential surface, that is, taking a structure that is inclinedly wide. It is possible.

This structure is not limited to the injection nozzle 130 at a specific position, but is particularly useful for the injection nozzle 130 formed in the inlet side direction rather than the end side of the injection pipe 100, and relatively inlet-side injection nozzle 130. It may be said that the diameter of the smaller extension part 132 is compensated for.

That is, the extension part 132 is formed so as to spread from the inside (inside of the injection pipe) to the outside (exposed part side end), so that the water is not sprayed properly or the instantaneous pressure is applied at the start end of the extension part 132 due to the reduced diameter. In addition to preventing the aggravation of the phenomenon, it is possible to control the uniform spraying of water more than necessary for each spray nozzle 130 based on the overall standard of the spray nozzle 130 with a difference in diameter of the extension part 132 . to provide.

In this case, the taper angle of the extension part 132 may be set in the range of 5 to 30 degrees based on the vertical line (the extension direction of the extension part), and may be set to different taper angles.

For example, in a situation where a total of four injection nozzles 130 are installed, the extension parts 132 of the first, second, third, and fourth injection nozzles 130 on the end side of the injection pipe 100 are 5, 7, and 10, respectively. , can be set to a tapered angle, such as 12 degrees.

This structure sequentially increases the above-described taper angle (sequentially widening structure) as it progresses from the end side of the injection tube 100 to the inlet side, that is, in response to the diameter of the sequentially decreasing extension 132, as much as possible. It compensates for the uniform spray action of water.

6 is a perspective view illustrating a rotatable structure of the injection pipe.

Referring to FIG. 6 , the spray pipe 100 does not extend as a single pipe integral with the water supply tank for supplying water in the washing tank 10 , but extends from the tank to the periphery of the inner space of the washing tank 10 . It can be seen that it can be coupled to the coupling pipe 30 . At this time, the injection pipe 100 takes a cylindrical shape.

In addition, it can be seen that a screw thread is formed in the coupling portion of the water coupling pipe 30 and the jetting pipe 100 , so that the jetting pipe 100 can be rotated at a predetermined angle with respect to the water coupling pipe 30 .

Of course, in this case, it can be understood that there is provided enough clearance to rotate the screw thread at a predetermined angle so that water does not flow out between the water coupling pipe 30 and the injection pipe 100 .

According to this, the spray pipe 100 can be rotated at a certain angle in the upward or downward direction with respect to the water coupling pipe 30 , thereby finely adjusting the spray direction of the water sprayed from the spray nozzle 130 . it is possible

In particular, according to the height of the water surface of the washing water and the installation position of the injection pipe 100, the injection point can be selected such as a point just below the water surface and a point coincident with the water surface, as well as the straightness enhanced by the length of the extension part 132. Water can have a specific directionality and can proceed to the inside of the surface of the washing water, so it can have a characteristic of providing a more diverse vortex generation environment.

7 is a perspective view illustrating first and second injection tubes and a connector.

As can be seen from FIG. 7 , the injection pipe 100 may provide a structure extending in two in each of the left and right lateral directions of the washing tank.

In other words, the injection pipe 100 according to FIG. 7 may be formed of first and second injection pipes 110 and 120 respectively extending from the left and right sides of the washing tub 10 . In this structure, the branch pipes branched from the water supply tank may be extended to the left and right sides of the washing tank 10 , and then the first and second injection pipes 110 and 120 may be connected thereto, respectively.

Corresponding to the structure of the first and second injection tubes 110 and 120 , the ultrasonic cleaner of the present invention can install the connector 200 between the first and second injection tubes 110 and 120 .

Specifically, the connector 200 is attached to the inner wall (inner wall) of the washing tub 10 between the first and second injection pipes 110 and 120 and extends along the extending direction of the first and second injection pipes 110 and 120 . The attached portion 210 and the connecting portion extending in a state through which the coupling hole 221, which is bent at the left and right ends of the attachment portion 210, respectively, is coupled to the ends of the first and second injection tubes 110 and 120, respectively ( 220). In this case, the attachment part 210 may be attached to the inner wall of the washing tank 10 through a known adhesive or a separate fastener.

That is, in a state in which the connector 200 has a 'C' shape as a whole, the first and second injection pipes 110 and 120 are stably spaced apart from each other by a predetermined distance so that the first and second injection pipes do not touch each other. Provides a function of fixing and supporting (110, 120).

In particular, the connector 200 of the present invention provides a role of easily fixing the two injection tubes exposed to the inside of the washing tank 10 , that is, the first and second injection tubes 110 and 120 as one component.

Furthermore, the ends of the first and second injection pipes 110 and 120 may be formed with a protruding coupling portion 102 coupled to the coupling hole 221 by protrudingly extending in a state where a thread is formed on the outer circumferential surface of the ends.

Correspondingly, the connector 200 may include a fastening member 230 coupled to the thread of the protruding coupling portion 102 coupled to the coupling hole 221 .

According to this structure, it is possible to conveniently adjust the position of the connector 200 according to the number of rotations or the direction of the screw thread as well as providing a basis for more easily coupling the connector 200 to the first and second injection tubes 110 and 120 . can provide a foundation for

8 is a cross-sectional view showing the structure of the packing fitted between the injection nozzle and the injection pipe.

As can be seen from FIG. 8 , the ring-shaped packing 300 may be fitted between the bottom surface of the exposed portion 131 of the spray nozzle 130 and the outer periphery of the through hole 101 .

That is, the injection nozzle 130 is not integrally formed with the injection pipe 100 , but is fitted to the through-hole 101 by welding or the like as described above, and then fixed to the injection tube 100 , the exposed portion 131 . ) has a flat surface, but the outer periphery of the through hole 101 has a curved surface, there may be a problem of lifting between the teeth. may be

Therefore, the packing 300 is installed between the injection nozzle 130 and the injection pipe 100 that can firmly fix and support the injection nozzle 130 to the injection pipe 100 while appropriately absorbing the external force such as the injection pressure. it has been provided

Furthermore, it is important that the packing 300 exhibits improved performance without easily slipping between the injection nozzle 130 and the injection pipe 100 while retaining basic elasticity.

For the purpose of further strengthening the elasticity and improving the physical properties, the packing 300 is polylactide-polyvinylidene fluoride-polylactide triblock copolymer (Poly(L-lactide)-poly(vinylidene fluoride)- 10 to 20 parts by weight of an elastic auxiliary layer containing poly(L-lactide) Triblockcopoly mer).

At this time, the packing 300 has a structure in which the elastic auxiliary layer 320 is laminated on the surface of the elastic base 310 made of an elastic material as shown in FIG. 8 , or is otherwise based on 100 parts by weight of the packing 300 80 to 90 parts by weight of an elastic base 310 made of an elastic material, polylactide-polyvinylidenefluoride-polylactide triblock copolymer (Poly(L-lactide)-poly(vi nylidenefluoride)-poly(L-lactide) ) may be a mixture of 10 to 20 parts by weight of the elastic auxiliary layer 320 containing Triblockcopoly mer). Among these two embodiments, the latter is more preferable for the integral performance improvement of the packing 300 .

The elastic base 310 may be made of the aforementioned elastic material, and in this case, there is no limitation on the number or type to be selected.

For example, the elastic base 310 is a thermoplastic elastomer (Thermo plastic elastomer, TPE), nitrile-butadiene rubber (NBR), polyvinyl chloride (PVC), ethylene vinyl acetate (Ethylene vinyl acetate, EVA) ), but may include at least one, more preferably polyvinyl chloride (Polyvinyl chloride, PVC).

Polyvinyl chloride is a kind of thermoplastic plastic and is known to be used in a wide range of fields, such as flooring, wallpaper, packaging, and curtains, because it is flexible, exhibits excellent strength and durability, and at the same time has low thermal conductivity. In addition, since it is easy to color, it has the advantage of being able to implement various colors including separate color raw materials according to individual preferences or needs.

Furthermore, as the elastic auxiliary layer 320 is added to the packing 300 by using the excellent processability of polyvinyl chloride, the physical properties of the packing 300 may be more effectively improved, which will be described later.

The elastic auxiliary layer 320 includes a polylactide-polyvinylidene fluoride-polylactide triblock copolymer as an active ingredient, and the polylactide-polyvinylidene fluoride-polylactide triblock copolymer includes poly As a triblock copolymer in which polylactide is bonded to vinylidene fluoride, it is possible to provide a high level of elasticity and at the same time, each material is environmentally friendly, so it has an advantage that it is not harmful to the environment.

Furthermore, the elastic auxiliary layer 320 may further include various materials in addition to the polylactide-polyvinylidene fluoride-polylactide triblock copolymer. .

Specifically, the above-described auxiliary elastic layer 320 may be manufactured through the steps of preparing the first mixture (S11), preparing the second mixture (S12), and completing the elastic auxiliary layer (S13). have.

(S11) preparing a first mixture

First, 15 to 30 parts by weight of a polylactide-polyvinylidene fluoride-polylactide triblock copolymer, 50 to 70 parts by weight of polyvinyl alcohol, and 10 to 25 parts by weight of amodimethicone are mixed. A first mixture is prepared.

As described above, the polylactide-polyvinylidene fluoride-polylactide triblock copolymer added here is an eco-friendly resin that provides a high level of elasticity, and polyvinyl alcohol has excellent solubility in other resin components. A substance capable of performing a function as a solvent.

Amodimethicone is a kind of siloxane polymer whose terminal is substituted with an amino functional group. It has excellent emulsification properties, which increases the solubility of various components included in the first mixture and at the same time functions as an antifoaming agent to reduce bubbles generated during the mixing process. It is a material that can provide the effect of removing and preventing the entrainment of foam.

(S12) preparing a second mixture

Subsequently, 80 to 90 parts by weight of the first mixture, 5 to 15 parts by weight of a functional rubber containing chlorosulphonated polyethylene, and 1 to 10 parts by weight of octocrylene are mixed and 5 to 10 parts by weight at 200 to 1000 rpm A second mixture is prepared by stirring for 20 minutes.

Here, the functional rubber includes chlorosulfonated polyethylene, and chlorosulfonated polyethylene is a type of rubber having a chlorine group (-Cl) as a functional group, and has excellent elastic restoring force and mechanical properties to improve the physical properties of the packing 300 and It can help to increase elasticity.

Octocrylene is a substituted acrylate that can effectively block ultraviolet B (UVB) and at the same time provide a function as an anti-discoloration agent. It is added to the elastic auxiliary layer to protect the packing 300 from ultraviolet rays. In addition, it can serve to prevent deterioration and discoloration.

At this time, for effective mixing of the functional rubber and octocrylene, stirring is performed at 200 to 1000 rpm for 5 to 20 minutes so that the functional rubber and octocrylene are better than the polyvinyl alcohol and amodimethicone contained in the first mixture It is desirable to allow it to dissolve easily and to form a homogeneous mixture.

(S13) Completing the elastic auxiliary layer

Finally, 90 to 95 parts by weight of the second mixture, 0.5 to 5 parts by weight of Paeonia Suffruticosa Root Extract, and 1 to 3 parts by weight of Tetrahydrocurcumin, Zinc Borosilicate 1 to 3 parts by weight to complete the physical property improving agent.

Peony root extract is extracted from the bark of peony root through various conventional extraction methods such as hot water extraction and subcritical extraction. have. In the case of such a peony root extract, it has an excellent anti-oxidation function and antibacterial function, thereby preventing discoloration due to oxidation of the packing 300 and further adding antibacterial properties.

Tetrahydrocurcumin is one of the active ingredients of curcumin, that is, turmeric, which is known to have a strong antioxidant action. In addition to the antibacterial action through the peony root extract, the antibacterial property is further improved, and further deterioration of the quality of the packing 300 caused by long-term use can be prevented once more.

Zinc borosilicate is an amorphous glass composed of boron oxide, silicon dioxide, sodium oxide and zinc oxide, and can be used as an abrasive due to its high frictional force. ), that is, it is possible to prevent the phenomenon of easily sliding off the ground.

Such an elastic auxiliary layer may have a uniform and even composition by itself by further improving mixing properties and preventing unnecessary bubbles from being generated.

Furthermore, it is added to the packing 300 to provide a high level of elastic restoring force and excellent mechanical properties, and at the same time prevent the occurrence of surface slip (slip) and alleviate the deterioration of quality due to oxidation that may occur over time. It has a characteristic that

In order to explain the function of the elastic auxiliary layer of the present invention, the evaluation results of Examples 1 and 2 and Comparative Examples will be compared and described.

Examples 1 and 2 are composed of preferred Examples 1 and 2 of the elastic auxiliary layer of the present invention, and the comparative example is a conventional polyvinyl chloride packing.

<Example 1>

1. Preparation of elastic auxiliary layer

100 g of a first mixture was prepared by mixing 25 g of polylactide-polyvinylidene fluoride-polylactide triblock copolymer, 60 g of polyvinyl alcohol, and 15 g of amodimethicone.

85 g of the prepared first mixture, 10 g of chlorosulfonated polyethylene, and 5 g of octocrylene were stirred at 500 rpm for 15 minutes to prepare 100 g of a second mixture.

90 g of the prepared second mixture, 5 g of peony root extract, 3 g of tetrahydrocurcumin, and 2 g of zinc borosilicate were mixed to complete 100 g of an elastic auxiliary layer.

2. Manufacture of packing

A resin composition comprising 10 wt% of the above-described elastic auxiliary layer was prepared by mixing the elastic auxiliary layer prepared through the process of 1. with polyvinyl chloride resin, and it was molded into a ring shape with a diameter of 4 cm and a thickness of 0.8 cm. did.

<Example 2>

1. Preparation of elastic auxiliary layer

A polylactide-polyvinylidene fluoride-polylactide triblock copolymer was prepared as an elastic auxiliary layer.

2. Manufacture of packing

A resin composition containing 10 wt% of the above-mentioned elastic auxiliary layer was prepared by mixing the elastic auxiliary layer prepared through the process of 1. with polyvinyl chloride resin, and it was molded into a ring shape with a diameter of 4 cm and a thickness of 0.8 cm. did.

<Comparative example>

A conventional polyvinyl chloride resin was molded into a ring shape having a diameter of 4 cm and a thickness of 0.8 cm.

In this case, the composition ratio of the elastic auxiliary layer of Examples 1 and 2 described above is shown in Table 1 below. Here, the unit of each value is % by weight.

Example 1 Example 2 Polylactide-polyvinylidene fluoride
-Polylactide triblock copolymer 19.1 100 polyvinyl alcohol 45.9 - Amodimethicone 11.4 - Chlorosulfonated Polyethylene 9.0 - Octocrylene 4.5 - Peony Root Extract 5.0 - tetrahydrocurcumin 3.0 - zinc borosilicate 2.0 -

Tests were performed on the prepared rings of Examples 1 and 2 and the conventional polyvinyl chloride rings of Comparative Examples.

1. Mechanical properties: To measure mechanical properties, tensile strength and elongation at break were measured according to ASTM D638 (50 mm/min).

2. Tear strength: According to ASTM D624, tear strength was measured using the Trouser method among "Tear Strength - ASTM D624 Plastic Test Standard".

3. Hardness: The hardness was measured using a Shore hardness tester (TELCLOCK Type A) in accordance with ASTM D2240.

4. Restoration rate: After applying a force of 10N using a UTM (Universal Testing Machine), the restoration rate was measured using the thickness recovered within 10 seconds.

5. Rebound resilience: In order to measure the property of returning to the original shape, the average value of 5 repeated tests in accordance with KS M ISO 8307 was measured.

6. Permanent compression set rate: In order to measure the degree of not returning to the original shape, the compression set rate was measured according to KS M 6518.

7. Discoloration resistance: After irradiating a 15W UV lamp emitting a wavelength of 315~400nm at a distance of 20cm from the coating film for 20 days, color change was checked.

Table 2 is a table showing the test results of mechanical properties, tear strength, hardness, recovery rate, rebound elasticity, permanent compression set, and discoloration resistance. Example 1 Example 2 comparative example Tensile strength (psi) 1860 1852 1834 Elongation (%) 315 307 301 tear strength (pli) 270 261 254 Hardness (Shore A Type) 90 89 81 Restoration rate (%) 95 91 88 Rebound elasticity (%) 80 77 68 Permanent compression set (%) 2 10 15 discoloration × × △

As can be seen from Table 1, it can be seen that Examples 1 and 2 of the present invention are generally superior in tensile strength, elongation, tear strength, hardness, recovery rate, rebound elasticity, permanent compression set reduction, and discoloration resistance compared to Comparative Examples. can

Further, through comparison between Examples 1 and 2, Example 1, which was made of a mixed composition of various materials, compared to Example 2 using polylactide-polyvinylidene fluoride-polylactide triblock copolymer alone, was It can be seen that the physical properties including tensile strength, elongation rate, tear strength, hardness, recovery rate, rebound elasticity, permanent compression set rate, and discoloration resistance are more excellent.

As described so far, the configuration and operation of the ultrasonic cleaner including the injection tube in which a plurality of injection nozzles are formed according to the present invention are expressed in the above description and drawings, but this is only an example and the spirit of the present invention is not limited to the above description and It is not limited to the drawings, and various changes and modifications are possible without departing from the technical spirit of the present invention.

10: washing tank 20: ultrasonic vibrator
30: water coupling pipe 100: spray pipe
101: through hole 102: protruding coupling portion
110: first injection pipe 120: second injection pipe
130: spray nozzle 131: exposed part
132: extension 200: connector
210: attachment part 220: connection part
221: coupling hole 230: fastening member
300: packing 310: elastic base
320: elastic auxiliary layer

Claims (9)

An ultrasonic cleaner including a spray tube having a plurality of spray nozzles formed therein,
a washing tank accommodating washing water and a washing object, wherein an ultrasonic vibrator is installed to wash the washing object in an ultrasonic manner;
a spray pipe extending along the inner wall of the washing tub to generate a vortex by spraying water into the washing tub, the injection pipe having a plurality of through-holes penetrating at regular intervals toward the inner space of the washing tub;
A spray nozzle mounted on the through hole, comprising an exposed portion surrounding the outer periphery of the through hole, and an extension portion bent at the end of the exposed portion and extending through the through hole to the inside of the injection pipe;
The diameter of the extension portion sequentially increases as it progresses from the inlet to the end of the injection pipe,
Between the lower surface of the exposed part and the outer periphery of the through hole, a ring-shaped packing comprising an elastic base made of an elastic material and an elastic auxiliary layer coated on the surface of the elastic base is fitted and coupled,
The elastic auxiliary layer,
15 to 30 parts by weight of the polylactide-polyvinylidene fluoride-polylactide triblock copolymer, 50 to 70 parts by weight of polyvinyl alcohol, and 10 to 25 parts by weight of amodimethicone are mixed to form the first preparing a mixture;
80 to 90 parts by weight of the first mixture, 5 to 15 parts by weight of a functional rubber containing chlorosulphonated polyethylene, and 1 to 10 parts by weight of octocrylene are mixed and 5 to 20 parts by weight at 200 to 1000 rpm stirring for minutes to prepare a second mixture;
90 to 95 parts by weight of the second mixture, 0.5 to 5 parts by weight of Paeonia Suffruticosa Root Extract, and 1 to 3 parts by weight of tetrahydrocurcumin, and 1 to 3 parts by weight of zinc borosilicate Completing the elastic auxiliary layer by mixing 3 parts by weight; characterized in that produced through the ultrasonic cleaner. The method of claim 1,
A portion extending along the outer circumferential surface from the inner circumferential surface of the injection pipe in the extension portion,
An ultrasonic cleaner, characterized in that the inner peripheral surface is taper (tapered) toward the outer peripheral surface, characterized in that the gap. The method of claim 1,
The injection pipe is
Doedoe coupled to the water coupling pipe in a cylindrical shape,
An ultrasonic cleaner, characterized in that a screw thread is formed in the coupling portion of the water coupling pipe and the spray pipe, and the spray pipe can be rotated at a predetermined angle with respect to the water coupling pipe. The method of claim 1,
The injection pipe is
Consists of first and second injection pipes respectively extending from the left and right sides of the washing tank,
The ultrasonic cleaner is
An attachment portion extending along an extension direction of the first and second injection tubes in a state of being attached to the inner wall of the washing tank between the first and second injection tubes, and bending at left and right ends of the attachment portion, respectively, the first , A connector including a connector extending in a state in which the coupling hole to which each end of the injection pipe is coupled is penetrated; characterized in that it comprises a, ultrasonic cleaner. 5. The method of claim 4,
Ends of the first and second injection tubes are
A protruding coupling portion is formed on the outer circumferential surface of the end protrudingly extending in a state in which a thread is formed and coupled to the coupling hole,
The connector is
Ultrasonic cleaner, characterized in that it comprises a tightening member coupled to the screw thread of the protruding coupling portion coupled to the coupling hole. delete delete delete delete

Images