Patent Publication Number: US-2016243387-A1

Title: Long-distance fluid injection device

Description:
TECHNICAL FIELD 
     The present invention relates to a long-distance fluid ejection device, and more particularly, to a long-distance fluid ejection device that is capable of ejecting the fluid farther away by joining of fluid ejected through a long-distance fluid ejection device. 
     BACKGROUND ART 
     Nozzles for ejecting fluid distribution is installed in a terminal of a shower and a fire fighting nozzle and can adjust the direction, the flow rate, the flow velocity and the like of the fluid ejected through the nozzle for ejecting the fluid. 
     In general, in the fire fighting nozzle or the like that needs to eject the fluid farther away, a cross-sectional area of a flow passage is narrowed to increase the flow velocity of fluid and eject the fluid farther away. To this end, the conventional fire fighting nozzles mainly use a method of adjusting the ejection distance of the fluid, by varying the flow path cross-sectional area in accordance with the movement of a moving body provided in the interior of the nozzle. 
     However, there is a limit in increasing the ejection distance of the fluid by simply adjusting the cross-sectional area of the flow passage as in the conventional cases. 
     DISCLOSURE 
     Technical Problem 
     The present invention was made to solve the conventional problems described above, and an object of the present invention is as follows. 
     An embodiment of the present invention is to provide a long-distance fluid ejection device capable of ejecting fluid farther away. 
     The objects of the present invention are not limited to those mentioned above, and other objects that have not been mentioned will be clearly understood by those skilled in the art from the following description. 
     Technical Solution 
     According to an aspect of the present invention, a long-distance fluid ejection device may include a main body, a nozzle and a coupling unit. 
     The main body may be connected to a hose through which fluid flow. 
     The nozzle has a circular flat plate shape, and is formed with a plurality of fluid ejection holes disposed in a relatively large number as they go away from the center, and may be provided in a leading end of the main body. 
     Each of the plurality of fluid ejection holes may include an opening, and a direction switching unit protruding to the inside of the opening in the radial direction of the nozzle. 
     The coupling unit may couple the nozzle to the main body. 
     A center hole from which fluid is discharged in a straight line may be formed at the center of the nozzle. 
     The direction switching unit may be formed toward the center of the nozzle from the outside of the radius of the nozzle. 
     The opening may have a main ejection region located at the center portion, and a pair of auxiliary ejection regions divided by the direction switching unit. 
     The fluid ejection holes may be disposed on a plurality of concentric circles formed based on the center of the nozzle. 
     The plurality of fluid ejection holes located on one concentric circle may be disposed so as to be spaced apart from each other at predetermined intervals. 
     Meanwhile, the plurality of concentric circles may be disposed so as to be spaced apart from each other at predetermined intervals. 
     It should be understood that different embodiments of the invention, including those described under different aspects of the invention, are meant to be generally applicable to all aspects of the invention. Any embodiment may be combined with any other embodiment unless inappropriate. All examples are illustrative and non-limiting. 
     Advantageous Effects 
     The effects of the present invention configured as described above are as follows. 
     According to the long-distance fluid ejection device according to an embodiment of the present invention, the fluid ejected through the fluid ejection hole is ejected obliquely toward the center axis to form a single stem in the center axis. Accordingly, it is possible to eject the fluid farther away. 
     Effects of the present invention are not limited to the aforementioned effects, and other effects that have not been mentioned will be clearly understood to those skilled in the art from the scope of the claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The summary described above as well as the detailed description of the preferred embodiments of the present application which will be described below will be more clearly understand when read in conjunction with the accompanying drawings. The preferred embodiments are illustrated in the drawings for the purposes for illustrating the present invention. However, it should be understood that the present application is not limited to the illustrated accurate arrangements and means. 
         FIG. 1  is a diagram illustrating a fire fighting nozzle to which a long-distance fluid ejection device according to an embodiment of the present invention is applied. 
         FIG. 2  is a diagram illustrating a nozzle of a long-distance fluid ejection device according to an embodiment of the present invention. 
         FIG. 3  is an enlarged view of a fluid ejection hole formed in the nozzle of the long-distance fluid ejection device according to an embodiment of the present invention. 
         FIG. 4  is a diagram illustrating the cross-section of the nozzle of the long-distance fluid ejection device according to an embodiment of the present invention and the flow of fluid. 
         FIG. 5  is a photograph illustrating a state in which fluid is ejected by the fire fighting nozzle to which the conventional fluid ejection device is applied. 
         FIG. 6  is a photograph illustrating a state in which fluid is ejected by the fire fighting nozzle to which the long-distance fluid ejection device according to an embodiment of the present invention is applied. 
         FIG. 7  is a diagram illustrating a nozzle of a long-distance fluid ejection device according to another embodiment of the present invention. 
         FIG. 8  is a diagram illustrating a nozzle of a long-distance fluid ejection device according to still another embodiment of the present invention. 
     
    
    
     BEST MODE FOR THE INVENTION 
     Exemplary embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. Throughout the disclosure, like reference numerals refer to like parts throughout the various figures and embodiments of the present invention. 
     Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the attached drawings are only described to more readily illustrate the contents of the present invention, and a person having ordinary skill in the art will be able to easily understand that the scope of the present invention is not limited to the scope of the attached drawings. 
     Further, in describing the embodiments of the present invention, it should be understood that components having the same function are only denoted by the same names and the same reference numerals, and are not substantially exactly the same as the components of the prior art. 
     Furthermore, terms used in this application are simply used to describe particular embodiments and are not intended to limit the present invention. The singular representation includes a plural representation, unless otherwise indicated in a clearly different manner on the context. In this application, it should be understood that terms such as “comprises” or “has” are used to specify the presence of features, numbers, steps, operations, elements, parts or a combination thereof described in the specification, rather than excluding possibility of presence or addition of one or more other features, numbers, steps, operations, elements, parts or a combination thereof in advance. 
       FIG. 1  is a diagram illustrating a fire fighting nozzle to which a long-distance fluid ejection device according to an embodiment of the present invention is applied. 
     Hereinafter, the long-distance fluid ejection device according to an embodiment of the present invention will be described with reference to  FIG. 1 . 
     The long-distance fluid ejection device according to an embodiment of the present invention includes a main body  10 , a nozzle and a coupling unit  20 . 
     The main body  10  may be connected to a hose through which fluid flows. 
     The nozzle  100  may be made of a metal material and may have a predetermined thickness in a circular flat plate shape. 
     A reference point  110  may be any point on the nozzle  100 . In this embodiment, the nozzle  100  is formed in a circular shape, and the reference point  110  may be located in the center of the nozzle  100 . 
     A plurality of fluid ejection holes  120  is formed in the nozzle  100 , and the number of fluid ejection holes  120  may relatively increase as it goes away from the reference point  110 . 
     Further, the nozzle  100  may be coupled to the main body  10  by the coupling unit  20 . 
       FIG. 2  is a diagram illustrating the nozzle of the long-distance fluid ejection device according to an embodiment of the present invention. 
     In the present embodiment, a plurality of fluid ejection holes  120  may be disposed on each of a plurality of concentric circles centered around the reference point  110 . The fluid ejection hole  120  may include an opening  122 , and a direction switching unit  124  that protrudes to the inside of the opening  122  toward the reference point  110 . The detailed shape of the fluid body ejection holes  120  will be described later. 
     Accordingly, the fluid ejected through the fluid ejection hole  120  is obliquely ejected toward the center axis of the nozzle  100  and can be joined at the center axis. 
     Although  FIG. 2  illustrates an example in which the respective concentric circles are spaced apart from each other by a predetermined distance, the spaced distance of each concentric circle does not need not be always constant. 
     Further, the drawings illustrate an example in which a plurality of fluid ejection holes  120  located on a single concentric circle are arranged to be spaced apart from each other at a predetermined interval, all the spaced distances between the plurality of fluid ejection holes  120  located on the single concentric single may also be differently disposed. 
     Also, although the drawings illustrate an example in which the fluid ejection holes  120  located on each concentric circle are located on a straight line in the radial direction of the nozzle  100 , the invention it is not limited thereto, and as long as the fluid ejection holes  120  are located on a concentric circle centered on the reference point  110 , they may be irregularly arranged in the radial direction of the nozzle  100 . 
     Meanwhile, although it is not illustrated in the drawings, the nozzle  100  according to an embodiment of the present invention may further include a center hole that is formed on the reference point  110  so that the fluid is ejected in the direction coincident with the center axis. 
     The shape of the center hole may have a circular form or a regular polygon such a triangular shape and a square shape so that redirection of the fluid ejected through the center hole does not occur. 
     The flow velocity of fluid ejected through the nozzle  100  can become faster, while passing through the fluid ejection hole  120  and the center hole of the nozzle  100 . According to Bernoulli&#39;s theorem, since the cross-sectional area of the flow passage becomes rapidly narrower at the fluid ejection hole  120  and the center hole on the pathway through which the fluid moves, the flow velocity of the fluid can increase. 
     Also, fluid ejected toward the center axis through the respective fluid ejection holes  120  is joined with the fluid ejected from the center hole, the flow rate becomes larger than a case of being ejected from each fluid ejection hole  120  or the center hole, the flow velocity becomes faster accordingly, and the fluid can be ejected farther away. 
     With the above-described effects of the long-distance fluid ejection device according to the present embodiment, although the long-distance fluid ejection device of this embodiment can also be used for a shower, a washing machine and the like, in particular, it can maximize the effect when being applied to the fighting nozzle of the fire hose. 
     At the time of fire suppression, it is required to eject a lot of flow farther away. When applying the long-distance fluid ejection device of the present embodiment to the fighting nozzle of the fire hose, the fluid can be ejected to farther away even at the same flow rate, and thus, it is very effective in fire suppression. 
     Also, since the long-distance fluid ejection device of this embodiment is formed in a flat plate shape, a complicated configuration for coupling is not required. When the device is simply inserted into a stepped portion in the fire fighting nozzle, since the device is pressurized by water pressure and is supported on the stepped portion of the distal end of the fire fighting nozzle, by simply replacing the conventional nozzle or the like with the long-distance fluid ejection device of the present embodiment, the aforementioned effects can be expected. 
     However, in order to apply the long-distance fluid ejection nozzle of this embodiment to the fighting nozzle of fire hose, it can have a sufficient thickness and rigidity enough not to be deformed or detached even at the very strong water pressure. 
       FIG. 3  is an enlarged view of the fluid ejection hole of the nozzle according to an embodiment of the present invention. 
     Although the shape of the fluid ejection hole  120  may be variously formed, as illustrated in  FIG. 3 , the shape of the fluid ejection hole  120  of the nozzle  100  according to an embodiment of the present invention illustrates a heart shape. 
     The shape of the fluid ejection hole  120  of the present embodiment will be described in more detail. The direction switching unit  124  projects toward the reference point  110  to the inner side of the opening  122 , and the opening  122  may have a circular arrow shape or heart shape in which its width increasingly decreases as it goes toward the reference point  110 . 
     That is, the opening  122  can have a main ejection region  122  located at the center portion, and a pair of auxiliary ejection regions  122   b  divided by the direction switching unit  124 . 
     The flow rate of the fluid discharged through the fluid ejection hole  120  is concentrated to the main ejection region  122   a  by the direction switching unit  124 , the direction of the discharged fluid can be changed accordingly. 
     In particular, as a result of the test, when the fluid ejection hole  120  has a circular arrow shape or heart shape, the degree to which water is obliquely ejected, stability of the structure and ease of manufacturing were the most excellent. 
       FIG. 4  is a diagram illustrating the cross-section of the nozzle according to an embodiment of the present invention and the flow of fluid. 
     As in the present example, when the fluid ejection hole  120  is formed in the arrow shape or heart shape the width of the opening  122  is narrowed as it goes toward the reference point  110 , a phenomenon in which the flow rate is concentrated on the main ejection region  122   a  can be further be enhanced. 
     Each fluid ejection hole  120  is formed in a circular arrow shape or heart shape toward the reference point  110 , and the direction switching units  124  provided in the respective fluid ejection holes  120  are inserted into the opening  122  toward the reference point  110 . Accordingly, as illustrated in  FIG. 4 , the whole fluid ejected through the respective fluid ejection holes  120  can be directed to the center axis of the nozzle  100 . Accordingly, the fluid ejected through the respective fluid ejection holes  120  can be joined at the center axis. Since large water flow formed by joining of each water flow increases in the flow rate as compared to each water flow, the flow velocity increases accordingly. Thus, the flow velocity of the fluid increases once due to the reduction of flow passage cross-sectional area, while passing through the nozzle  100 , and when each water flow is joined at the center axis by the direction switching unit  124 , the flow velocity is consistent from its flow velocity further increases. Therefore, fluid can be ejected farther away as compared to a case of increasing the flow velocity by simply reducing the cross-sectional area of the flow passage. 
       FIG. 5  is a photograph illustrating a state in which fluid is ejected by the fire fighting nozzle to which the conventional fluid ejection device is applied, and  FIG. 6  is a photograph illustrating a state in which fluid is ejected by the fire fighting nozzle to which the long-distance fluid ejection device according to an embodiment of the present invention is applied. 
     When comparing  FIGS. 5  with  6 , it is possible to actually check that the fluid ejection distance of the fighting nozzle to which the long-distance fluid ejection device of the present embodiment of  FIG. 6  is applied obviously increases as compared to the fighting nozzle to which the conventional fluid ejection device of  FIG. 5  is applied. 
       FIG. 7  is a diagram illustrating a nozzle of a long-distance fluid ejection device according to another embodiment of the present invention. 
     Meanwhile, a long-distance fluid ejection device according to another embodiment of the present invention includes a main body  10 , a nozzle  100  and a coupling unit  20 . 
     The present embodiment differs from an embodiment of the present invention in the form of the fluid ejection hole  120 , and since the remaining configurations are the same as those of an embodiment of the present invention, the same configurations will not be described. 
     As illustrated in  FIG. 7 , the shape of the fluid ejection hole  120  of an embodiment of the present invention has a rounded arrow shape, and meanwhile, the shape of the fluid ejection hole  120  of the present embodiment may be formed in an angular arrow shape or a concave square. 
     In the present embodiment, the width of the opening  122  of the fluid ejection hole  120  becomes narrower in the direction of the reference point  110 , and the direction switching unit  124  may project to the inside of the opening  122  toward the reference point  110 . 
       FIG. 8  is a diagram illustrating a nozzle of a long-distance fluid ejection device according to still another embodiment of the present invention. 
     The long-distance fluid ejection device according to still another embodiment of the present invention may include a main body  10 , a nozzle  100  and a coupling unit  20 . 
     The present embodiment differs from the aforementioned embodiments in the form of the fluid ejection hole  120 , and since the remaining configurations are the same as those of the aforementioned embodiments, the same configurations will not be described. 
     As illustrated in  FIG. 8 , the shape of the fluid ejection hole  120  of this example may be formed in a horseshoe shape in which a semi-circular semi-oval direction switching unit  124  enters the inside of the semicircular or semi-elliptical opening portion  122 . 
     The shape of the fluid ejection hole  120  of an embodiment of the present invention has a rounded arrow shape, and meanwhile, the shape of the fluid ejection hole  120  of the present embodiment may be formed in an angular arrow shape or a concave square. 
     Also in this embodiment, the width of the opening  122  of the fluid ejection hole  120  becomes narrower in the direction of the reference point  110 , and the direction switching unit  124  may enter the opening  122  towards the reference point  110 . 
     Although the preferred embodiments according to the present invention have been described above, it is apparent to those having an ordinary skill in the art that the present invention can be embodied in other specific forms in addition to the previously described embodiments, without departing from its spirit and category. Accordingly, the aforementioned embodiments described above should be considered as being illustrative rather than being restrictive. Accordingly, the present invention may be varied within the category of the appended claims and their equivalent scopes without being limited to the foregoing description. 
     While the present invention has been described with respect to the specific embodiments, it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.