Abstract:
The present disclosure relates to a water sprayer and various features thereof. More particularly, the present disclosure relates to a water sprayer for use in a pool, and to a method for using the same. In various embodiments, the water sprayer may include a water output mechanism and a light source that is powered by flowing water to provide illumination functionality.

Description:
CROSS REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims priority to the following applications, the disclosures of which are hereby expressly incorporated by reference herein in their entirety: 
         [0000]    
       
         
               
               
               
             
           
               
                   
                   
               
               
                   
                 Application No. 
                 Filing Date 
               
               
                   
                   
               
             
             
               
                   
                 CN 2015202058702 
                 Apr. 8, 2015 
               
               
                   
                 CN 2015202071054 
                 Apr. 8, 2015 
               
               
                   
                 CN 2015203107091 
                 May 14, 2015 
               
               
                   
                 CN 2015206185393 
                 Aug. 17, 2015 
               
               
                   
                 CN 2015206185887 
                 Aug. 17, 2015 
               
               
                   
                   
               
             
          
         
       
     
       FIELD OF THE DISCLOSURE 
       [0002]    The present disclosure relates to a water sprayer and various features thereof. More particularly, the present disclosure relates to a water sprayer for use in a pool, and to a method for using the same. 
       BACKGROUND OF THE DISCLOSURE 
       [0003]    There are many ways to enhance pool recreation. One such way is the use of a water spraying mechanism or a water sprayer. Water sprayers can include various structures and offer various forms of functionality. Existing water sprayers, however, are simple in both structure and function. 
         [0004]    For example, water sprayers can include a light source (e.g., LED) to offer an LED illumination function. Existing water sprayers have an LED illumination function powered by batteries. But such a mechanism is inconvenient, as it requires regularly replacing batteries. Other existing water sprayers offering an LED illumination function are driven by water flow generator mechanisms that supply power to the LED, where water flow rotates a rotor to produce a current and a corresponding voltage. The voltage and current supplied by these water flow generator mechanisms, however, are dependent on water pressure and water flow rate. Thus, when the water pressure and water flow rate generate voltage and current higher than the rated voltage and rated current of the LED, the LED may burn out. Correspondingly, where the water pressure and water flow rate are low, the water flow generator mechanism produces current insufficient to meet the need of the lighting device, thus shortening the useful life of the LED. 
         [0005]    Water sprayers can also be structured to produce a water sheet output (i.e., a water sheet sprayer). To form a water sheet output, water sheet sprayers generally have an outlet structure with an elongated opening. However, due to traditional piping structures and water viscosity properties, existing water sheet sprayers suffer from uneven and irregular water flow at the output, which affects the appearance and comfort of the water sheet. Oftentimes, instead of a water sheet output, the result is a water output in the shape of a flat ellipse. These disadvantages are heightened in situations in which the size of the outlet structure is significantly larger than the size of the inlet structure. 
         [0006]    In view of these disadvantages, it would be beneficial to have a water sprayer with illumination functionality independent of water pressure and water flow rate. Furthermore, it would also be beneficial to have a water sheet sprayer with improved and consistent water flow. 
       SUMMARY 
       [0007]    The present disclosure provides a water sprayer, various water sprayer features, and further relates to methods for using the same. Various configurations of the water sprayer are contemplated as within the scope of the present disclosure. Each water sprayer may include a water output mechanism and a light source that is powered by flowing water to illuminate the sprayed water. 
         [0008]    According to one embodiment of the present disclosure, a water sprayer comprises a spraying cover further comprising a sealing element, wherein the sealing element is disposed in the spraying cover, and an adjusting valve, wherein the adjusting valve is rotatably accommodated in the spraying cover and cooperated with the sealing element to close the outlet of the spraying cover, and is disposed with a water spout passage and a water curtain passage, and is further disposed with a handle, wherein when the adjusting valve is rotated, the sealing element closes the water spout passage or the water curtain passage, or the sealing element opens the water spout passage and the water curtain passage at the same time. 
         [0009]    According to another embodiment of the present disclosure, a water sprayer comprises an outlet component disposed at an outlet end of an outlet waterway, a decompression waterway connected to the outlet waterway, an elastic element, and a valve spool to open and close the decompression waterway, wherein the elastic element applies elastic force on the valve spool to make the valve spool close the decompression waterway, and when the pressure valve of the waterway to the valve spool is larger than the elastic force of the elastic element to the valve spool, the valve spool is pushed away, and the decompression waterway is open. 
         [0010]    According to a further embodiment of the present disclosure, a water sprayer comprises a main body, a cover plate, a water pipe, and a rectifying chamber, wherein a front end of the main body cooperates with the cover plate and forms an elongated outlet extending in the horizontal direction, a rear end of the main body is disposed with an inlet connected to the water pipe, the main body is assembled to the cover plate to define a hollow chamber connecting the inlet and the outlet, the rectifying chamber is assembled to the end of the hollow chamber and is connected to the outlet, the rectifying chamber has wavy sub-hollow chamber. 
         [0011]    According to another embodiment of the present disclosure, a water sprayer end comprises an outlet nozzle, wherein the outlet nozzle is bilaterally symmetrical and the width of the outlet nozzle is gradually larger from the center to both outer ends, the outlet nozzle has a closed elongated hole comprising a lateral straight line section, a curve line section, a left connecting line section, and a right connecting line section when projected or expanded in the horizontal plane, and wherein water sprays out of the outlet nozzle to form a water sheet of even thickness. 
         [0012]    According to a further embodiment of the present disclosure, an impeller speed-up mechanism comprises a deflecting cover, and an impeller, wherein the deflecting cover is disposed with an inlet passage running through the deflecting cover vertically, the impeller is rotatably disposed in the inlet passage, the outer periphery surface of the impeller is disposed with a plurality of blades evenly arranged in the periphery and inclined to the left with respect to the axis of the inlet passage, wherein a plurality of drain plates are evenly disposed at the side wall of the inlet passage in the circumferential direction, the drain plates incline to the right with respect to the axis of the inlet passage. 
         [0013]    According to yet another embodiment of the present disclosure, a water sprayer outlet mechanism is disclosed for use with a pool. The water sprayer outlet mechanism has an inlet and an outlet nozzle in fluid communication with the inlet, the outlet nozzle including an elongate hole configured to deliver water from the inlet to the pool, a planar projection of the elongate hole having a lateral axis and a central axis of symmetry, the elongate hole defined by a first elongate section, a second elongate section, a first end section that connects the first and second elongate sections, and a second end section that connects the first and second elongate sections, wherein a width of the elongate hole measured between the first and second elongate sections increases from the central axis to each of the first and second end sections. 
         [0014]    According to yet another embodiment of the present disclosure, a water sprayer outlet mechanism is disclosed for use with a pool. The water sprayer outlet mechanism includes a water passageway with an inlet and an elongate outlet that widens laterally, a power generating mechanism positioned along the water passageway, and a light source powered by the power generating mechanism and configured to illuminate water in the water passageway. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]    The above-mentioned and other features and advantages of this disclosure, and the manner of attaining them, will become more apparent and the invention itself will be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, wherein: 
           [0016]      FIG. 1  is a perspective view of a pool with an exemplary L-shaped water sprayer; 
           [0017]      FIG. 2  is an exploded perspective view of the L-shaped water sprayer of  FIG. 1 ; 
           [0018]      FIG. 3  is an assembled perspective view of the L-shaped water sprayer of  FIG. 2 ; 
           [0019]      FIG. 4  is a sectional view of the L-shaped water sprayer of  FIG. 3  when a water sprout passage and a water curtain passage are open; 
           [0020]      FIG. 5  is a sectional view of the L-shaped water sprayer of  FIG. 3  when the water spout passage is closed; 
           [0021]      FIG. 6  is a sectional view of the L-shaped water sprayer of  FIG. 3  when the water curtain passage is closed; 
           [0022]      FIG. 7  is a perspective view of an exemplary T-shaped water sprayer; 
           [0023]      FIG. 8  is an exploded perspective view of part of the T-shaped water sprayer of  FIG. 7 ; 
           [0024]      FIG. 9  is an exploded perspective view of another part of the T-shaped water sprayer of  FIG. 7 ; 
           [0025]      FIG. 10  is a sectional view of the T-shaped water sprayer of  FIG. 7 ; 
           [0026]      FIG. 11  is an exploded perspective view of a water sprayer head of the T-shaped water sprayer of  FIG. 7 ; 
           [0027]      FIG. 12  is a sectional view of the water sprayer head of  FIG. 11 ; 
           [0028]      FIG. 13  is an end view of the water sprayer head of  FIG. 11 ; 
           [0029]      FIG. 14  is a schematic diagram of an outlet nozzle of the water sprayer head of  FIG. 11  when projected or expanded in a horizontal plane; 
           [0030]      FIG. 15  is another schematic diagram of the outlet nozzle of the water sprayer head of  FIG. 11  when projected or expanded in the horizontal plane; 
           [0031]      FIG. 16  is an exploded perspective view of an exemplary impeller speed-up mechanism of the T-shaped water sprayer of  FIG. 7 ; 
           [0032]      FIG. 17  is a sectional view of an impeller of the impeller speed-up mechanism of  FIG. 16 ; 
           [0033]      FIG. 18  is another sectional view of the impeller of the impeller speed-up mechanism of  FIG. 15 ; 
           [0034]      FIG. 19  is an exploded perspective view of an outlet mechanism of an exemplary water sheet sprayer; 
           [0035]      FIG. 20  is a sectional view of the water sheet sprayer of  FIG. 19 ; 
           [0036]      FIG. 21  is a sectional view of a hydropower generating device of the water sheet sprayer of  FIG. 19 ; 
           [0037]      FIG. 22  is an exploded perspective view of an outlet mechanism of another exemplary water sheet sprayer; 
           [0038]      FIG. 23  is a sectional view of the outlet mechanism of the water sheet sprayer of  FIG. 22 ; 
           [0039]      FIG. 24  is a sectional view of a hydropower generating device of the water sheet sprayer of  FIG. 22 ; 
           [0040]      FIG. 25  is a partially assembled perspective view of the water sheet sprayer of  FIG. 19 ; and 
           [0041]      FIG. 26  is a perspective view of a pool with the water sheet sprayer of  FIG. 19 . 
       
    
    
       [0042]    Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate exemplary embodiments of the invention and such exemplifications are not to be construed as limiting the scope of the invention in any manner. 
       DETAILED DESCRIPTION 
       [0043]      FIGS. 1-6  provide an exemplary embodiment of a water sprayer outlet mechanism  100 . Among other uses, water sprayer outlet mechanism  100  may be used to spray water into an above ground pool  101 , as shown in  FIG. 1 , or another suitable pool of water, such as an inflatable pool or a heated spa. The illustrative pool  101  includes a wall or liner  104 , a plurality of vertical support structures or legs  105 , and an upper annular support structure  106 . The water sprayer outlet mechanism  100  may be partially or entirely concealed inside an outer cover (e.g., box) to provide a clean and modern appearance. 
         [0044]    As shown in  FIGS. 2-4 , the illustrative water sprayer outlet mechanism  100  is L-shaped and has an outlet or spray end  106  that faces vertically upward and an inlet end  108  that faces horizontally. Water sprayer outlet mechanism  100  includes a sprayer cover  110 , a seal  120 , an adjusting valve  130 , a top cover  140 , a power generating component  150 , a light source  160  (e.g., LED), a lamp shade  170 , an inlet pipe  180 , and a connecting element  190 . 
         [0045]    The illustrative sprayer cover  110  is fan-shaped and has a rectangular or ellipse-shaped outlet  112  that faces vertically upward toward outlet end  106  and a circular-shaped inlet  114  that faces vertically downward. Seal  120 , which may be constructed of rubber or another suitable material, is rectangular or ellipse-shaped and is disposed at outlet  112  of sprayer cover  110 . Top cover  140  is also disposed at outlet  112  of sprayer cover  110  and cooperates with sprayer cover  110 , such as with bolts or other fasteners (not shown), to compress seal  120  therebetween. 
         [0046]    Furthermore, the illustrative adjusting valve  130  is cylinder-shaped and defines an internal water spout passage  132  and an internal water curtain passage  134 , which are located on opposing sides of lamp shade  170 . As discussed further below, adjusting valve  130  is capable of being adjusted to deliver water from outlet end  106  via water spout passage  132 , water curtain passage  134 , or both, such that water flowing out of water spout passage  132  sprays out as a water spout, and water flowing out of water curtain passage  134  sprays out as a water curtain or sheet. More specifically, adjusting valve  130  is rotatably accommodated in sprayer cover  110  and cooperates with seal  120  to selectively plug and/or open outlet  112  of the sprayer cover  110 . 
         [0047]    As shown in  FIGS. 4-6 , adjusting valve  130  further comprises a handle  136 , which is disposed between water spout passage  132  and water curtain passage  134 . Handle  136  extends outwardly from adjusting valve  130  and through top cover  140  and is used to manually rotate adjusting valve  130 , so that seal  120  can toggle between engaging adjusting valve  130  at water spout passage  132 , water curtain passage  134 , or neither. More specifically, a user may manipulate handle  136  to rotate adjusting valve  130  so that seal  120  closes water spout passage  132  and opens water curtain passage  134 , as shown in  FIG. 5 , such that water only flows through water curtain passage  134 . Likewise, the user may manipulate handle  136  to rotate adjusting valve  130  so that seal  120  closes water curtain passage  134  and opens water spout passage  132 , as shown in  FIG. 6 , such that water only flows through water spout passage  134 . Alternatively, the user may manipulate handle  136  to rotate adjusting valve  130  to a central position, such that water spout passage  132  and water curtain passage  134  are open at the same time, as shown in  FIG. 4 . 
         [0048]    Returning to  FIGS. 2-4 , power generating component  150 , light source  160 , and lamp shade  170  may be disposed in sprayer cover  110 . Lamp shade  170  may abut a lower end  138  of adjusting valve  130 . Light source  160  is disposed in lamp shade  170 , and power generating component  150  is operably connected to light source  160 . In operation of an exemplary embodiment, water flowing through sprayer cover  110  may impact power generating component  150 , so that power generating component  150  generates power and supplies power to light source  160 . Lamp shade  170  may be at least partially translucent to allow light to pass from light source  160 , through lamp shade  170 , and into the water flowing through sprayer cover  110  so that illuminated water is sprayed from outlet end  106 . Light source  160  may be configured to generate one or more colors of light. 
         [0049]    The power generating component  150  of water sprayer outlet mechanism  100  may have various features in common with the below-described power generating component  240  of water sprayer outlet mechanism  200 . For example, as shown in  FIGS. 2 and 4 , the illustrative power generating component  150  includes a deflecting cover  151 , an impeller  152 , a stator  153 , a rotor  154 , and a motor  156 . Additional details regarding power generating component  150  are disclosed below with respect to power generating component  240 . 
         [0050]    Additionally, an upper end  194  of connecting element  190  is connected to an opening at the bottom inlet  114  of sprayer cover  110 . In the illustrated embodiment of  FIG. 4 , the connecting element  190  is externally threaded and the sprayer cover  110  is internally threaded to form a threaded connection therebetween, but the type of connection may vary. A lower end  196  of connecting element  190  includes a hollow universal ball joint  192 . Universal ball joint  192  is pivotally received within a tapered end or socket  181  of the inlet pipe  180  and captured therein by an interlocking retaining ring  182 . This pivotal connection allows the user to control the direction of the outgoing water spray from outlet end  106  by moving connecting element  190  relative to inlet pipe  180 . 
         [0051]    Inlet pipe  180  also includes an adapter  183  configured to connect water sprayer outlet mechanism  100  to a water source. In  FIG. 1 , the water source is a return hose  102  from pool  101 , wherein the water is pumped and optionally filtered and/or heated before returning to pool  101  via return hose  102 . Another interlocking retaining ring  184  may be provided to couple adapter  183  to inlet pipe  180 . Also, a nut  185  and a seal  186  may be provided to couple adapter  183  to pool  101 . In  FIG. 4 , liner  104  of pool  101  is clamped and sealed between seal  186  on one side and outer face  187  of adapter  183  on the other side. Rather than coupling water sprayer outlet mechanism  100  to liner  104  of pool  101 , it is also within the scope of the present disclosure to couple water sprayer outlet mechanism  100  to support structures  105  or  106  of pool  101 . In at least one embodiment, the inlet pipe  180  is L-shaped, as shown in  FIG. 4 , such that the inlet pipe  180  extends horizontally from the pool wall  104  and then vertically upward toward connecting element  190 , sprayer cover  110 , and other elements located near outlet end  106  of water sprayer outlet mechanism  100 . 
         [0052]      FIGS. 7-18  provide another embodiment of a water sprayer outlet mechanism  200 . As shown in  FIG. 10 , the illustrative water sprayer outlet mechanism  200  is T-shaped and includes an inlet waterway  205  that extends horizontally from a water source (not shown), an outlet waterway  210  that extends vertically upward from the inlet waterway  205 , and a decompression waterway  220  that extends vertically downward from the inlet waterway  205 . As described further below, when the water pressure inside water sprayer outlet mechanism  200  is too high, decompression waterway  220  may open automatically to drain excess water and decompress the water pressure inside water sprayer outlet mechanism  200 , thus stabilizing the water pressure of outlet waterway  210 , so that outlet waterway  210  maintains an even flow rate. 
         [0053]    Along outlet waterway  210 , water sprayer outlet mechanism  200  may include a light source (e.g., LED) (not shown but similar to the above-described light source  160 ), an outlet or head component  230 , and a power generating component  240  disposed in the water sprayer outlet mechanism  200  and operably connected to the light source (not shown). Power generating component  240  may be disposed in outlet component  230 . In operation of an exemplary embodiment, water travels horizontally through inlet waterway  205  and vertically upward through outlet waterway  210  and outlet component  230 . Then the water flowing through outlet component  230  impacts power generating component  240 , so that power generating component  240  generates power and supplies power to the light source. The light passes from the light source and into the water, and then the illuminated water sprays out of outlet component  230 . Outlet component  230  and power generating component  240  are described further below. 
         [0054]    At the intersection between inlet waterway  205 , outlet waterway  210 , and decompression waterway  220 , water sprayer outlet mechanism  200  may include a T-shaped guiding pipe  270  comprising an inlet  272 , an outlet  274 , and a decompression or drainage port  276 . As shown in  FIG. 10 , the inlet  272  is disposed along inlet waterway  205 , the outlet  274  is disposed along outlet waterway  210 , and the decompression port  276  is disposed along decompression waterway  220 . 
         [0055]    Along decompression waterway  220 , water sprayer outlet mechanism  200  may include an elastic element  250  (e.g., spring), a valve spool  260  used to open and close decompression waterway  220 , a knob  280 , a fixation nut  292 , and a trimming nut  294 . Additionally, valve spool  260  is T-shaped and includes a sealing end cover  262  connected to a guiding column  264 . Sealing end cover  262  is sleeved with a sealing pad  266 , and valve spool  260  is aligned along the central axis of decompression port  276 . Elastic element  250  is sleeved on the guiding column  264 . Fixation nut  292  is connected to decompression port  276  of guiding pipe  270 . Knob  280  is threaded and connected to fixation nut  292 , such that a lower portion  282  of knob  280  abuts elastic element  250 . Knob  280  further includes a hole  284  corresponding to guiding column  264 . Trimming nut  294  is threaded and connected on lower portion  282  of knob  280  to abut elastic element  250 . 
         [0056]    By rotating knob  280 , the user may move lower portion  282  of knob  280  upward to compress elastic element  250  or downward to release elastic element  250 , such that elastic element  250  applies an adjustable force to valve spool  260  toward outlet waterway  210 . When the water pressure in the outlet waterway  210  is at or below the user&#39;s preselected level, elastic element  250  forces valve spool  260  upward to close decompression waterway  220 , so water flows through outlet waterway  210  and out of water sprayer outlet mechanism  200 . When the water pressure in the outlet waterway  210  is above the user&#39;s preselected level, the water pressure on valve spool  260  is higher than the force applied to valve spool  260  by elastic element  250 , so that the valve spool  260  and, more specifically, guiding column  264  is pushed downward into knob hole  284 , thereby opening the decompression waterway  220 . 
         [0057]    Water sprayer outlet mechanism  200  may have various features in common with the previously-described water sprayer outlet mechanism  100 . For example, as shown in  FIGS. 9 and 10 , water sprayer outlet mechanism  200  may include a connecting element  290  with a universal ball joint  292  for rotatably coupling outlet component  230  to guiding pipe  270 . 
         [0058]    An exemplary outlet component  230  is now described in more detail with reference to  FIGS. 11 and 12 . Outlet component  230  may include a sprayer cover  410 , a seal  415 , a lampshade  420  configured to receive the light source, and a guiding or deflecting plate  440 . A top surface  422  of lampshade  420  is arc-shaped and includes an elongated outlet nozzle  460 . Deflecting plate  440  cooperates with a side  424  of lampshade  420  to define a water spray passage  480 . Water spray passage  480  has a tapered or conical shape with narrow top  482  and wide bottom  484 . Top  482  of water spray passage  480  is connected to elongated outlet nozzle  460 , such that water flows through water spray passage  480  and sprays out of elongated outlet nozzle  460  to form a water sheet of substantially even thickness. 
         [0059]    Referring next to  FIGS. 13-15 , elongated outlet nozzle  460  may be bilaterally symmetrical about a central axis and have a width that is gradually larger from a center  462  to outer ends  469 , so as to maintain a consistent thickness of an outlet water sheet. 
         [0060]    As shown in  FIG. 14 , elongated outlet nozzle  460  has an elongated, thin hole shape defined by a lateral straight line section  461 , a lateral curved line section  462 , a left end connecting line section  463 , and a right end connecting line section  464  when projected or expanded in a horizontal plane. When creating a plane coordinate system in a horizontal plane, the lateral X-axis of the coordinate system tracks lateral straight line section  461 , the central Y-axis extends parallel to and between the left and right end connecting line sections  463  and  464 , and the origin of the coordinate system is located at a midpoint  470  of lateral straight line section  461 . In an exemplary embodiment, curve line section  462  is calculated with formula: Y=a 4 x 4 +a 2 x 2 +a 0 ; wherein a 0 ≧1, 10 −5 ≧a 4 ≧10 −12 , and 10 −2 ≧a 2 ≧10 −6 . In another exemplary embodiment, a 0 =1.5, 10 −7 ≧a 4 ≧7*10 −10 , and 1.4*10 −3 ≧a 2 ≧3*10 −4 . In yet another exemplary embodiment, a 0 =1.5, a 4 =9*10 −10 , and a 2 =5*10 −4 . 
         [0061]    The process for deriving Y=a 4 x 4 +a 2 x 2 +a 0  is as follows: The system flow Q and the expected water sheet width H, which corresponds to the physical width of elongated outlet nozzle  460 , are known. At a certain flow rate V, the section area S of elongated outlet nozzle  460  is determined using a known calculus method to determine the curvilinear formal Y=a 4 x 4 +a 2 x 2 +a 0 . More specifically, according to the Fourier function for determining a curvilinear equation, the general equation is Y=a 2n x 2n +a 2n−1 x 2n−1 + . . . +a 4 x 4 +a 3 x 3 +a 2 x 2 +a 1 x+a 0 . If the curvilinear equation is symmetrical about the Y-axis, as in the exemplary embodiment, the odd power factors are: 0, a 2n−1 =0, . . . , a 3 =0, a 1 =0. Further, according to known water viscosity and curvilinear correlation properties, the number of power factors is under 5, such that Y=a 4 x 4 +a 3 x 3 +a 2 x 2 +a 1 x+a 0 . Thus, because elongated outlet nozzle  460  is symmetrical about Y-axis, a 3 =0 and a 1 =0, then Y=a 4 x 4 +a 2 x 2 +a 0 . Thus, if the expected water sheet width H, which corresponds to the physical width of elongated outlet nozzle  460 , is 120 mm, the water flow rate V is between 2 m/s, the system volumetric flow rate Q is 550 GPH in a certain lift, the section area of elongated outlet nozzle  460  is S, where: 
         [0000]    
       
         
           
             S 
             = 
             
               
                 Q 
                 V 
               
               = 
               
                 
                   
                     550 
                     * 
                     3.78546 
                   
                   
                     1000 
                     * 
                     3600 
                     * 
                     2 
                   
                 
                 = 
                 
                   
                     0.000289 
                      
                     
                         
                     
                      
                     
                       m 
                       2 
                     
                   
                   = 
                   
                     289 
                      
                     
                         
                     
                      
                     
                       mm 
                       2 
                     
                   
                 
               
             
           
         
       
     
         [0062]    As shown in  FIG. 15 , another elongated outlet nozzle  460 ′ is both bilaterally symmetrical about the central Y-axis and longitudinally symmetrical about the lateral X-axis. Elongated outlet nozzle  460 ′ has an elongated, thin hole shape defined by an upper curve line section  465 ′, a lower curve line section  466 ′, a left end connecting line section  467 ′, and a right end connecting line section  468 ′ when projected or expanded in a horizontal plane. When creating a plane coordinate system in a horizontal plane, the X-axis of the coordinate system is located at a line of symmetry between upper curve line section  465 ′ and lower curve line section  466 ′, the origin of the coordinate system is located at a midpoint  471 ′ between upper curve line section  465 ′ and lower curve line section  466 ′. Upper curve line section  465 ′, for example, is calculated with the following formula: Y=a 4 x 4 +a 2 x 2 +a 0 ; wherein a 0 ≧1, 5*10 −6 ≧a 4 ≧5*10 −13 , and 5*10 −3 ≧a 2 ≧5*10 −7 . In another exemplary embodiment, a 0 =1.5, 5*10 −8 ≧a 4 ≧3.5*10 −10 , and 7*10 −4 ≧a 2 ≧1.5*10 −4  In yet another exemplary embodiment, a 0 =1.5., a 4 =4.5*10 −10 , and a 2 =2.5*10 −4 . 
         [0063]    An exemplary power generating component  240  is now described in more detail with reference to  FIGS. 16-18 . Power generating component  240  may include an impeller  520 , a stator  530 , a rotor  540 , an annular end cover  550 , a motor  560 , and a center shaft  570 . Power generating component  240  may further include a deflecting cover  510  coupled to motor  560  and disposed such that an inlet passage  512  runs vertically through deflecting cover  510 . Impeller  520  is rotatably disposed in inlet passage  512 . An outer periphery surface  528  of impeller  520  includes a plurality of blades  522 , which are adjacent to an outlet port  511  of inlet passage  512  and are inclined to the left with respect to an axis running parallel to inlet passage  512 . A plurality of deflection plates  514  is evenly disposed in inlet passage  512  in the circumferential direction. Deflection plates  514  are adjacent to an inlet port  513  of inlet passage  512  and are inclined to the right with respect to an axis running parallel to inlet passage  512 . Deflection plates  514  can change the water flow direction to make the water more directly impact blades  522 . In the illustrated embodiment of  FIG. 17 , an intersection angle a of blade  522  and an axis running parallel to inlet passage  512  is arranged at approximately 55-65 degrees, and an intersection angle β of deflection plate  514  and an axis running parallel to inlet passage  512  is arranged at approximately 25-45 degrees, which is less than angle α. In this embodiment, the water that impacts deflection plate  514  may impact blade  522  at a substantially perpendicular angle, such as about 70-100 degrees. 
         [0064]    Referring to  FIGS. 17 and 18 , the thickness of blades  522  may be gradually larger from the upper end to the lower end  523 . The thicker lower end  523  may have an arc-shaped surface that faces downward toward the deflection plate  514 . The side of the deflecting cover  510  at the inlet port  513  of inlet passage  512  also includes a water diversion body  516 . The exterior surface  515  of water diversion body  516  is a conical surface, such that water diffuses around diversion body  516  to impact the deflection plates  514  at a substantially perpendicular angle by the guiding of the water diversion body  516 , and then diffuses around deflection plates  514  to impact blades  522  at a substantially perpendicular angle by the guiding of deflection plates  514 . 
         [0065]    Referring to  FIG. 18 , impeller  520  includes a stator cavity  524  and a rotor cavity  526 . Rotor cavity  526  is annular-shaped and surrounds stator cavity  524 . Stator  530  is located in stator cavity  524 , and rotor  530  is located in rotor cavity  526 . Annular end cap  550  is disposed to cover the rotor cavity  526 . Motor  560  is inserted in stator cavity  524 , and stator  530  is disposed in motor  560 . Impeller  520  is disposed on center shaft  570 , which is connected to deflecting cover  510  and motor  560 . 
         [0066]      FIGS. 19-26  provide a further embodiment of a water sprayer outlet mechanism, specifically a water sheet sprayer outlet mechanism  300 . 
         [0067]    Referring to  FIGS. 19 and 20 , water sheet sprayer outlet mechanism  300  may include a lower main body  301 , an upper cover plate  302 , an L-shaped water pipe  303 , and a rectifying chamber  304 . A front or outlet end  305  of main body  301  cooperates with cover plate  302  to form an elongated horizontal outlet  311 . A rear or inlet end  306  of main body  301  is configured to receive water pipe  303 , which includes inlet  312 . Between the front end  305  and the rear end  306 , main body  301  cooperates with cover plate  302  to define a hollow chamber  313 , so as to connect inlet  312  and elongated outlet  311 . 
         [0068]    Rectifying chamber  304  is disposed in the hollow chamber  313  and connected between inlet  312  and elongated outlet  311 . Additionally, rectifying chamber  304  includes an upper cover  341  and a lower cover  342  that cooperate to define wavy sub-hollow chambers  340 . Upper cover  341  includes at least a first protrusion  361 , which may extend toward lower cover  342 . In an exemplary embodiment, upper cover  341  also includes a third protrusion  362 , although it may include more than the two protrusions  361 ,  362  shown in  FIG. 20 . Lower cover  342  includes at least a second protrusion  371 , which may extend toward upper cover  341 , and is staggered between the first protrusion  361  and third protrusion  362 . Like upper cover  341 , lower cover  342  may include more than the one protrusion  371  shown in  FIG. 20 . First protrusion  361 , second protrusion  371 , and third protrusion  362  cooperate to form wavy sub-hollow chambers  340 . 
         [0069]    A front end  343  of lower cover  342  includes a vertical guard sheet or barrier  372 , such that there is a clearance  373  between guard sheet  372  and upper cover  341 . Clearance  373  is fluidly connected to wavy sub-hollow chambers  340  on one side and elongated outlet  311  on the other side with elongated outlet  311  at a lower position than clearance  373 . In this embodiment, the water exiting wavy sub-hollow chambers  340  travels upward, over guard sheet  372 , and back downward to outlet  311 . As described, water is stabilized by the buffering and diffusing of the sub-hollow chambers  340  and guard sheet  372  and flows out of elongated outlet  311  evenly, thus forming a substantially flat water sheet instead of a column of water. In operation of the exemplary embodiment, water flows evenly and is not limited by the inlet water volume or flow rate or the particular turbulence characteristics of an inlet water flow in inlet  312  of water pipe  303 . Thus, the water output of the water sheet sprayer outlet mechanism  300  appears linear and attractive. 
         [0070]    Furthermore, water sheet sprayer outlet mechanism  300  may have other features in common with the previously-described water sprayer outlet mechanism  100  and/or water sprayer outlet mechanism  200 . For example, water sheet sprayer outlet mechanism  300  may include a power generating component  314  (which may be the same as or similar to the previously-described power generating components  150  and  240 ) and a light source  315  (which may be the same as or similar to the previously-described light source  160 ). In the illustrated embodiment of  FIG. 20 , power generating component  314  is disposed between the inlet  312  and rectifying chamber  304 , and light source  315  is disposed below elongated outlet  311 . 
         [0071]    Referring to  FIG. 21 , a first power generating component  314  may include an impeller  391 , a stator  392  and a rotor  393 . Stator  392  is assembled to a fixing rack  394  such that it is separated from the water flow, and rotor  393  is assembled to impeller  391 . The water flow from inlet  312  impacts impeller  391  in the longitudinal direction to drive impeller  391  and rotate rotor  393 , which generates voltage as the rotating magnetic field cuts the three-phase winding of stator  392 . The voltage generated is then supplied to and powers light source  315  of  FIG. 20 . 
         [0072]    Referring next to  FIGS. 22-24 , an alternative power generating component  314 ′ is disclosed in which water flow impacts impeller  391 ′ in a tangential direction to drive impeller  391 ′ to rotate rotor  393 ′. Because the water flow impacting impeller  391 ′ in a tangential direction is slight, and in order to maintain a water sheet outlet effect, inlet  312  of water pipe  303  is connected to a diversion pipe  316 ′ having two outlets  318 ′,  320 ′ to form two water flows ( FIG. 22 ). One water flow from outlet  318 ′ enters the rectifying chamber  304  after impacting the impeller  391 ′ in the tangential direction, and the other water flow from outlet  320 ′ bypasses the impeller  391 ′ and directly enters the rectifying chamber  304 . 
         [0073]    Referring next to  FIGS. 25 and 26 , water sheet sprayer outlet mechanism  300  may be connected to a support leg  317  or another component of pool  301 , such as the liner or the upper annular support structure. As shown in  FIG. 18 , support leg  317  has an upper fixing board or bracket  361  and a lower fixing board or bracket  362  each having a groove  365  that is configured to receive water pipe  321 . Water pipe  321  is placed in grooves  365  and is fixed in grooves  365  via bolts  363  and clamping structures  364  that attach to brackets  361 ,  362 . 
         [0074]    While this invention has been described as having exemplary designs, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the limits of the appended claims.