Patent Publication Number: US-2010129234-A1

Title: Shock damper for outlet pipe of diaphragm pump

Description:
This application claims the benefit of provisional U.S. Patent Application No. 61/193,362, field Nov. 21, 2008, 
    
    
     FIELD OF THE PRESENT INVENTION 
     The shock damper of the present invention relates to diaphragm pumps, which have been exclusively used with RO (Reverse Osmosis) purifier or RO purification system, particularly for one that not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood. 
     BACKGROUND OF THE INVENTION 
     Currently, the compressing diaphragm pumps, which have been exclusively used with RO (Reverse Osmosis) purifier or RO purification system popularly, includes issued US Patents of U.S. Pat. Nos. 4,396,357, 4,610,605, 5,476,367, 5,571,000, 5,615,597, 5,626,464, 5,649,812, 5,706,715, 5,791,882, 5,816,133, 6,048,183, 6,089,838, 6,299,414, 6,604,909, 6,840,745 and 6,892,624. The compressing diaphragm pump aforesaid, as shown in  FIGS. 1 through 4 , essentially comprises a motor  10  with an output shaft (not shown), a round motor hood chassis  11  with plural screw bores  12  disposed at peripheral thereof, three wobble roundels  13 , a valvular diaphragm cover assembly  20  and a pump upper hood  30  with plural perforated holes  36  disposed at peripheral thereof; By driving the bolts  2  through aligned corresponding perforated holes  36  at the pump upper hood  30  and screw bores  12  at the motor hood chassis  11 , all the motor hood chassis  11 , wobble roundels  13 , valvular diaphragm cover assembly  20  and pump upper hood  30  are orderly stacked and assembled as an integral entity (as shown in  FIG. 2 ), wherein: Said wobble roundels  13 , which are evenly disposed in the motor hood chassis  11  in radial manner, are driven by the output shaft of the motor  10  to transform into alternately axial movements respectively; Said valvular diaphragm cover assembly  20 , which is sandwiched between the pump upper hood  30  above and the motor hood chassis  11  beneath, includes a valvular cover  21 , a diaphragm  22 , an invert dome-shaped high pressure valve  23  created at the central top surface of the valvular cover  21 , three cupola-shaped low pressure valves  24  circumjacent beneath the high pressure valve  23  and three low-pressured chambers  25 , each of which is respectively formed between each corresponding low pressure valve  24  and the diaphragm  22  (as shown in  FIGS. 1 ,  3  and  4 ); and 
     Said pump upper hood  30 , which is an adapted hollow dome with bottom opening, includes a water inlet orifice  31  and a water outlet orifice  32  disposed on each opposed peripheral respectively, a tiered cavity  37  inwardly created at the bottom opening thereof to closely match with the peripheral of the valvular diaphragm cover assembly  20 , a round well-shaped pit  38  outwardly created at the inner central top wall thereof, a water outlet channel  35  perforated at the lateral wall of the round well-shaped pit  38  to communicate with the water outlet orifice  32  and a high-pressured chamber  34  encompassed by the inner wall of the round well-shaped pit  38  and the top surface of the valvular diaphragm cover assembly  20  upon the round well-shaped pit  38  closely docking the valvular diaphragm cover assembly  20  (as shown in  FIGS. 3 and 4 ). 
     Please refer to  FIGS. 3 and 4  that show the pumping operation of the aforesaid conventional diaphragm pump. Firstly, when the motor  10  is powered on, the tap water W come from the water inlet orifice  31  of the pump upper hood  30  flows into the low-pressured chamber  25 ; Secondly, upon each wobble roundel  13  being orderly driven by the driving power from the output shaft of the motor  10 , each corresponding low pressure valve  24  will pump in the diaphragm  20  so that the tap water W in the low-pressured chamber  25  will be preliminarily pumped up to water pressure of 60 psi˜120 psi as become pressurized water Wp; Thirdly, the pressurized water Wp is enabled to flow into the high-pressured chamber  34  via the high pressure valve  23  in the diaphragm  20 ; and Finally, the pressurized water Wp is pumped out the water outlet channel  35  of the well-shaped pit  38  and expelled out the diaphragm pump via the water outlet orifice  32  of the pump upper hood  30  (as arrowheads shown in  FIGS. 3 and 4 ) for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure. 
     Recently, a conventional diaphragm pump with automatic water cutoff function if motor in rest mode is produced by certain diaphragm pump manufacturers such as those disclosed in the Taiwan Utility Model Patent published number of 465678. The foregoing conventional diaphragm pump with automatic water cutoff function if motor in rest mode is hereinafter called “diaphragm pump of automatic water cutoff type” or “automatic water cutoff diaphragm pump” for short. As shown in  FIGS. 5 through 8 , other than all the structural parts aforesaid in the foregoing conventional diaphragm pump, the diaphragm pump of automatic water cutoff type also modifies the original pump upper hood  30  into an adapted pump upper hood  40 , which is an adapted hollow dome with bottom opening, includes a water inlet orifice  41  and a water outlet orifice  42  disposed on each opposed peripheral respectively, a round well-shaped pit  48  outwardly created at the inner central top wall thereof, a high-pressured chamber  44  encompassed therein, an upward accommodating pit  401  of hollow round well with a top opening and an upward water compressed cavity  402  of hollow round well with a top opening such that the accommodating pit  401  stacks on the water compressed cavity  402 , wherein Said accommodating pit  401 , which is disposed on the central top surface of the pump upper hood  40  with an inner diameter bored to be bigger than the inner diameter of the water compressed cavity  402 , has an elastic membrane disk  50  and a hood cover mount  60  contained therein in upward stack manner as well as a flow directing channel  404  downwardly created along the inner and from the bottom surface of the accommodating pit  401  towards the well-shaped pit  48  to connect with the water inlet orifice  41  in inter-fluent communicable manner; Said water compressed cavity  402 , which is downwardly created from the central bottom surface of the accommodating pit  401 , has a water outlet channel  45  perforated near the bottom side of the lateral wall thereof to communicate with the water outlet orifice  42 , a cylindrical shell tunnel  403  is created outsides thereof with open upper end connecting with the bottom surface of the accommodating pit  401  in inter-fluent communicable manner and an intermediate outtake vent  405  is created at the lateral wall thereof to communicate with the water outlet channel  45 ; Said hood cover mount  60 , which is stacked over the elastic membrane disk  50 , has a round well-shaped pit  61  with bottom opening in association with plural flow directing pores  62  at the lateral wall outwardly created at the bottom section thereof and a spring  63  in association with a dented receptacle  64  disposed therein so that the dented receptacle  64  stroke is confined by the well-shaped pit  61  and the elastic membrane disk  50  is enabled by the stretching resilience of the spring  63  to block the openings towards the accommodating pit  401  from water compressed cavity  402 , cylindrical shell tunnel  403  and flow directing channel  404  (as shown in  FIGS. 6 and 8 ); 
     Please refer to  FIGS. 7 and 8  that show the pumping operation of the aforesaid conventional diaphragm pump of automatic water cutoff type. Under the condition that the motor  10  being powered on: Firstly, the tap water W come from the water inlet orifice  41  of the pump upper hood  40  flows into the low-pressured chamber  25  for being pumped by each corresponding low pressure valve  24  in the diaphragm  20  up to water pressure of 60 psi˜120 psi as become pressurized water Wp; Secondly, the pressurized water Wp is enabled to flow into the high-pressured chamber  44  via the high pressure valve  23  in the diaphragm  20  (as arrowheads shown in  FIG. 7 ); Meanwhile, the tap water W come from the water inlet orifice  41  will flow into the accommodating pit  401  via the flow directing channel  404  to fill the well-shaped pit  61  in full manner via flow directing pores  62 ; Thereby, the elastic membrane disk  50  is suffered two opposed forces, namely, the downward force is the resultant force by the water pressure of the tap water W in the well-shaped pit  61  and the stretching resilience of the spring  63  while the upward force is the water pressure of the pressurized water Wp come from the high-pressured chamber  44  via the cylindrical shell tunnel  403 ; Under the motor  10  power on condition, the upward force from the water pressure of the pressurized water Wp of the cylindrical shell tunnel  403  is strong enough to overcome the resultant downward force by the water pressure of the tap water W in the well-shaped pit  61  and the stretching resilience of the spring  63  so that the elastic membrane disk  50  is pushed up to detach from the top surface of the water compressed cavity  402  for allowing the pressurized water Wp to get into the water compressed cavity  402 ; and Finally, the pressurized water Wp is expelled out the diaphragm pump via the water outlet orifice  42  of the pump upper hood  40  for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure (as shown in  FIG. 8 ). Under the condition that the motor  10  being powered off: Firstly, the tap water W come from the water inlet orifice  41  of the pump upper hood  40  can neither flow into the low-pressured chamber  25  nor into the high-pressured chamber  44 ; Secondly, the tap water W come from the water inlet orifice  41  can still flow into the accommodating pit  401  via the flow directing channel  404  to fill the well-shaped pit  61  in full manner via flow directing pores  62 ; Thereby, the elastic membrane disk  50  is only suffered a resultant downward force by the water pressure of the tap water W in the well-shaped pit  61  and the stretching resilience of the spring  63  because the upward force form the water pressure of the pressurized water Wp come from the high-pressured chamber  44  via the cylindrical shell tunnel  403  is decayed now; Under the motor  10  power off condition, no upward force from the water pressure of the pressurized water Wp of the cylindrical shell tunnel  403  to overcome the resultant downward force by the water pressure of the tap water W in the well-shaped pit  61  and the stretching resilience of the spring  63  so that the elastic membrane disk  50  is pushed down to closely attach the top surface of the water compressed cavity  402  for blocking and preventing the pressurized water Wp from getting into the water compressed cavity  402 ; and Finally, the pressurized water Wp is automatically cut off (as shown in  FIG. 7 ). 
     Please refer to  FIGS. 9 and 10 , for installing the conventional diaphragm pump in the RO (Reverse Osmosis) purifier or RO purification system, the lead plumbing process is normally as below: Firstly, screw each piping end  71  of both conventional elbow jointers  70  on the water inlet orifice  31  and water outlet orifice  32  of the pump upper hood  30  respectively; Secondly, insert each water tapping pipe P into each corresponding tapping end  72  of both elbow jointers  70 ; and Finally, sleeve a flange nut  73  over the male thread on the tapping end  72  of each corresponding of both elbow jointers  70  for securely screwing with each corresponding water tapping pipe P to finish the lead plumbing process. For further retrospectively examining the pumping operation of aforesaid conventional diaphragm pump described above. When the motor  10  is powered on, three wobble roundels  13  will orderly move up and down three times for each revolution of the motor  10 , each low-pressured chamber  25  is orderly activated by each corresponding wobble roundels  13  to pumped the tap water W into the high-pressured chamber  34 . Normally, the motor  10  runs 700 revolutions per minute (700 RPM) so that there is 2100 times per minute of the tap water W being pumped into the water outlet channel  35  of the pump upper hood  30  via the high-pressured chamber  34  and directed into the water tapping pipe P via the piping end  71  and tapping end  72  of the elbow jointer  70  (as shown in  FIG. 10 ). Accordingly, the pressurized water Wp will impact on the inner wall of the piping end  71  for the elbow jointer  70  at the water outlet orifice  32  2100 times per minute so that the water tapping pipe P will act to shock and vibrate for being incurred from the pump upper hood  30  by the reaction to such high frequency impact (as hypothetic line of the water tapping pipe P shown in  FIG. 7 ). An undesirable annoying noise is incurred because the shock and vibration in the water tapping pipe P indirectly affects to the other parts in the RO (Reverse Osmosis) purifier or RO purification system. Therefore, the user has to be suffered the annoying noise from the operation of the RO purifier or RO purification system. In the long run, it becomes a noise pollution and torture for the household life. The foregoing annoying noise and shock will be deteriorated in the conventional diaphragm of automatic water cutoff type as depicted below. Please refer to  FIGS. 11 and 12 , the pressurized water Wp pumped in the high-pressured chamber  44 , which does not directly flow into the water outlet orifice  42  via the water outlet channel  45  instead, is firstly detoured into the water compressed cavity  402  via the cylindrical shell tunnel  403  and open gap between the elastic membrane disk  50  and the top surface of the water compressed cavity  402 , then the pressurized water Wp is directed into the water tapping pipe P via the water outlet channel  45  and the piping end  71  and tapping end  72  of the elbow jointer  70  (as shown in  FIG. 12 ). Thereby, the circulation path of the pressurized water Wp becomes roundabout and elongated so that the pressurized water Wp impact on the inner wall of the piping end  71  for the elbow jointer  70  is worsened by the pressurized water Wp circulation detoured into the water compressed cavity  402  with result that the foregoing annoying noise and shock is deteriorated. Therefore, how to effectively obviate the “shock in the outlet pipe of the diaphragm pump” to further eliminate the annoying noise incurred becomes a critical issue for all diaphragm pump manufacturers, which does not have an effective and simple scheme is proposed. 
     SUMMARY OF THE INVENTION 
     After having addressing and deeply studied the forgoing issue of “shock with annoying noise in the outlet pipe of the diaphragm pump” happened in the conventional diaphragm pimp, an effective and simple solving means is eventually worked out by the applicant of the present invention via painstaking research and development. Therefore, the primary object of the present invention is to provide a shock damper for outlet pipe of diaphragm pump, which comprises a shock damper pod, a damping block, a damping elastomer and a damper cap, wherein said shock damper pod, which is an unitarily molded integral hollow cylinder, includes an intake jointer, an outtake jointer, a stroke cavity and a cap receptacle, wherein said intake jointer, which is male threaded, has a water intake channel run throughout with a distal end connecting with the proximal top end of the stroke cavity in inter-fluent communicable manner; said outtake jointer, which is disposed at the lateral wall of the shock damper pod with male and female threaded manner, has a water outtake channel run throughout with a upper end connecting with the lateral wall of the stroke cavity in inter-fluent communicable manner; said stroke cavity is a hollow cavity; and said cap receptacle is female threaded; said damping block, which is an adapted cylinder inserted in the stroke cavity of the shock damper pod, includes a closed top surface and a bottom sole with a dented receptacle; said damper cap, which is engaged in the stroke cavity of the shock damper pod, includes a central holding dent with an outer male thread; and said damping elastomer is disposed between the damping block and the damper cap. After screwing the intake jointer of the shock damper pod into the water outlet orifice of the pump upper hood, when the motor is powered on, the pressurized water come from the high-pressured chamber will flow into the water intake channel of the shock damper pod to impact on the top surface of the damping block in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring in the stroke cavity will offset the periodic impact of the pulsatile pressurized water in counteracting damper manner so that the pressurized water will become a steady flow without any pulsation. Accordingly, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood. 
     The other object of the present invention is to provide a shock damper for outlet pipe of diaphragm pump, which comprises a shock damper pod, a damping block, a damping elastomer and a damper cap, wherein said shock damper pod, which is an extended hollow cylinder integrated with the water outlet channel of the pump upper hood on the diaphragm pump, comprises an outtake jointer, a stroke cavity and an open cap receptacle end. When the motor is powered on, the pressurized water come from the high-pressured chamber will flow into the water outlet channel to impact on the top surface of the damping block in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring in the stroke cavity will offset the periodic impact of the pulsatile pressurized water in counteracting damper manner so that the pressurized water will become a steady flow without any pulsation. Accordingly, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded perspective view showing the conventional diaphragm pump of the prior art. 
         FIG. 2  is an assembly perspective view of the conventional diaphragm pump. 
         FIG. 3  is a sectional view taken along the line  3 - 3  of the  FIG. 2 . 
         FIG. 4  is a sectional view taken along the line  4 - 4  of the  FIG. 2 . 
         FIG. 5  is an exploded perspective view showing the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 6  is a sectional perspective view for a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 7  is a sectional schematic view taken along the line  7 - 7  of the  FIG. 5 . 
         FIG. 8  is a sectional view showing the pumping operation for a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 9  is an exploded perspective view showing two conventional elbow jointers having screwed with the conventional diaphragm pump. 
         FIG. 10  is a sectional view taken along the line  10 - 10  of the  FIG. 9 . 
         FIG. 11  is a perspective schematic view showing two conventional elbow jointers having screwed with the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 12  is a sectional view taken along the line  12 - 12  of the  FIG. 11 . 
         FIG. 13  is an exploded perspective view showing the first preferred embodiment of the present invention. 
         FIG. 14  is a sectional view taken along the line  14 - 14  of the  FIG. 13 . 
         FIG. 15  is a perspective schematic view showing the first preferred embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump. 
         FIG. 16  is a sectional view taken along the line  16 - 16  of the  FIG. 15 . 
         FIG. 17  is a sectional view showing the pumping operation for the first preferred embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump. 
         FIG. 18  is a perspective schematic view showing the first preferred embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 19  is a sectional view taken along the line  19 - 19  of the  FIG. 18 . 
         FIG. 20  is a sectional schematic view showing the second exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump. 
         FIG. 21  is an exploded perspective view showing the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump. 
         FIG. 22  is a sectional view taken along the line  22 - 22  of the  FIG. 21 . 
         FIG. 23  is a sectional view showing the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump. 
         FIG. 24  is a sectional view showing the pumping operation for the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump. 
         FIG. 25  is a sectional view showing the pumping operation for the third exemplary embodiment of the present invention installed on a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 26  is a perspective schematic view showing the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump. 
         FIG. 27  is a sectional view taken along the line  27 - 27  of the  FIG. 26 . 
         FIG. 28  is a sectional schematic view showing the pumping operation for the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump. 
         FIG. 29  is a sectional schematic view showing the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 30  is a sectional view showing the pumping operation for the fourth exemplary embodiment of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 31  is a sectional view showing a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump. 
         FIG. 32  is a sectional view showing the pumping operation for a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump. 
         FIG. 33  is a sectional view showing a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
         FIG. 34  is a sectional view showing the pumping operation for a combination of the third and the fourth exemplary embodiments of the present invention integrated with a pump upper hood in the conventional diaphragm pump of automatic water cutoff type. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Please refer to  FIGS. 13 through 15  a shock damper for outlet pipe of diaphragm pump according to a first preferred embodiment of the present invention comprises a shock damper pod  80 , a damping block  90 , a damping elastomer  100  and a damper cap  200  with male thread  202 . 
     Referring to  FIGS. 13 to 15 , the shock damper pod  80  is an unitarily molded integral hollow cylinder, includes an intake jointer  81 , an outtake jointer  82 , a stroke cavity  83  and a cap receptacle  84 , wherein said intake jointer  81 , which is male threaded for engaging with the water outlet orifice  32  of the pump upper hood  30 , has a water intake channel  811  run throughout with a distal end connecting with the proximal top end of the stroke cavity  83  in inter-fluent communicable manner; said outtake jointer  82 , which is disposed at the lateral wall of the shock damper pod  80  with male threaded manner for engaging with the water output pipe P 2  with a flange nut  73 , has a water outtake channel  821  run throughout with a upper end connecting with the lateral wall of the stroke cavity  83  in inter-fluent communicable manner; said stroke cavity  83  is a hollow cavity for holding the damping block  90  and damping elastomer  100  therein as well as to provide a space for the to-and-fro reciprocal movement of the damping block  90 ; and said cap receptacle  84  is female threaded for engaging with the male thread  202  of the damper cap  200 ; 
     The damping block  90 , which is an adapted cylinder inserted in the stroke cavity  83  of the shock damper pod  80 , includes a closed top surface  91  and a bottom sole  92  with a dented receptacle  93 ; 
     The damper cap  200 , which is engaged in the stroke cavity  83  of the shock damper pod  80 , includes a central holding dent  201  with an outer male thread  202  for engaging with female thread of the cap receptacle  84 ; and 
     The damping elastomer  100 , which is preferably a compressed spring, has outer diameter thereof is less than the inner diameter of the dented receptacle  93  in the damping block  90  and the inner diameter of the holding dent  201  in the damper cap  200  so that each end of which can be respectively inserted in the damping block  90  and damper cap  200 . 
     Please refer to  FIGS. 15 and 16  that show the assemble procedure of the above first preferred embodiment of the present invention installed on a pump upper hood  30  in the conventional diaphragm pump. Firstly, insert the damping block  90  into the stroke cavity  83  of the shock damper pod  80  by heading the top surface  91  of the damping block  90  towards the shock damper pod  80 ; Secondly, inset anyone end of the compressed spring  100  into the dented receptacle  93  of the damping block  90 ; Thirdly, align and cap the holding dent  201  of the damper cap  200  over the other end of the compressed spring  100  in holding attachment manner; and Finally, insert and screw the male thread  202  of the damper cap  200  with the female thread of the cap receptacle  84  in the stroke cavity  83  in engagement manner so that the top surface  91  of the damping block  90  closely attaches the inner top wall of the stroke cavity  83  to block the lower end of the water intake channel  811  (as shown in  FIG. 16 ). 
     Please refer to  FIGS. 15 through 17  that show the installing procedure and pumping operation for the first preferred embodiment with the shock damper of the present invention in the conventional diaphragm pump. Regarding the installing procedure, firstly screw the intake jointer  81  of the shock damper pod  80  into the water outlet orifice  32  of the pump upper hood  30 , and then screw the water output pipe P 2  with the outtake jointer  82  of the shock damper pod  80  to finish the installing procedure. The pumping operation is disclosed as below: when the motor  10  is powered on, the pressurized water Wp, which comes from the high-pressured chamber  34  via the water outlet channel  35 , will flow into the water intake channel  811  of the shock damper pod  80  to impact on the top surface  91  of the damping block  90  in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring  100  in the stroke cavity  83  will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel  821  of the outtake jointer  82  for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure and steady flow manner (as shown in  FIG. 17 ). Accordingly, by the offset damping function of the compressed spring  100  with damping block  90  in the stroke cavity  83 , the shock and annoying noise in the pump upper hood  30  will be significantly reduced. Thereby, neither the shock and vibration of the water output pipe P 2  will happen nor the harmful affection on the other parts in the RO purifier or RO purification system will incur. Thus, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood  30 . 
     Referring to  FIGS. 18 and 19  that show the installing procedure and pumping operation for the first preferred embodiment with the shock damper of the present invention in the conventional diaphragm pump of automatic water cutoff type. Regarding the installing procedure, firstly screw the intake jointer  81  of the shock damper pod  80  into the water outlet orifice  42  of the pump upper hood  40 , and then screw the water output pipe P 2  with the outtake jointer  82  of the shock damper pod  80  to finish the installing procedure. The pumping operation is disclosed as below: when the motor  10  is powered on, the pressurized water Wp, which passes the water outlet channel  45 , will flow into the water intake channel  811  of the shock damper pod  80  to impact on the top surface  91  of the damping block  90  in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring  100  in the stroke cavity  83  will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel  821  of the outtake jointer  82  (as shown in  FIG. 19 ). Accordingly, by the offset damping function of the compressed spring  100  with damping block  90  in the stroke cavity  83 , the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood  40 . 
     Please refer to  FIG. 20  that shows the pumping operation for the second exemplary embodiment of the present invention in the conventional diaphragm pump. Other than all the same parts in the first preferred embodiment in association with  FIGS. 15 through 17 , the shock damper here further comprises a gasket  94  and a washer  203 , wherein said gasket  94 , which sleeves over the damping block  90  near the top surface  91 , is served to prevent the pressurized water Wp from permeating into the compressed spring  100  to avoid any corrosion incurred, while the washer  203 , which sleeves over the male thread  202  peripheral of the damper cap  200 , is served adjust the distance between the damper cap  200  and shock damper pod  80  in increasing manner so that the resilient force of the compressed spring  100  can be regulated to cope with the fluctuation of the pressurized water Wp. 
     Please refer to  FIGS. 21 through 24  that show the pumping operation for the third exemplary embodiment with the shock damper of the present invention in the conventional diaphragm pump. Other than all the same parts in the first preferred embodiment in association with  FIGS. 15 through 17 , a truncated conical directing spoiler  95 , which is centrally configured on the top surface  91  of the damping block  90 , is also comprised in the shock damper here to be extended into the water intake channel  811  of the shock damper pod  80  in attachment manner (as shown in  FIG. 23 ). The directing spoiler  95  provides both directing function and spoiling function for the pressurized water Wp, when the pressurized water Wp impacts on the top surface  91  of the damping block  90  (as shown in  FIG. 24 ). 
     Although the profile of the directing spoiler  95 , which is preferably shown in truncated cone with neat surface in this exemplary embodiment for convenient illustration, is not intended for limiting accordingly. The directing spoiler  95  can be extensively altered into an truncated/non-truncated obelisk or dome shape other than said cone shape with neat, dial fluted, spiral grooved surface or the like respectively to practically accord with the optimal trade-off leverage between the damping and spoiling effects. 
     Please refer to  FIG. 25  that shows the pumping operation for the third exemplary embodiment with the shock damper with additional directing spoiler  95  of the present invention in the conventional diaphragm pump of automatic water cutoff type. As disclosed above, the directing spoiler  95 , which is extended into the water intake channel  811  of the shock damper pod  80  in attachment manner, provides both directing function and spoiling function for the pressurized water Wp, when the pressurized water Wp impacts on the top surface  91  of the damping block  90 . 
     Please refer to  FIGS. 26 and 27  that show the fourth exemplary embodiment for a “shock damper for outlet pipe of diaphragm pump” of the present invention integrated with a pump upper hood in the conventional diaphragm pump. 
     The shock damper basically comprises a shock damper pod  320 , a damping block  90 , a damping elastomer  100  and a damper cap  200  with male thread  202 , wherein 
     Said shock damper pod  320 , which is an extended hollow cylinder integrated with the water outlet channel  35  of the pump upper hood  30  on the diaphragm pump, comprises an outtake jointer  322 , a stroke cavity  321  and an open cap receptacle end, wherein said stroke cavity  321 , which is inwardly created from the open cap receptacle end to communicate with the water outlet channel  35  in the diaphragm pump of automatic water cutoff type having inner diameter being bigger than that of the water outlet channel  35 , is served for holding the damping block  90  and damping elastomer  100  therein as well as to provide a space for the to-and-fro reciprocal movement of the damping block  90 ; said outtake jointer  322 , which is disposed at the lateral wall of the shock damper pod  320  with male threaded manner for engaging with the water output pipe P 2  with a flange nut, has a water outtake channel  323  run throughout with a upper end connecting with the lateral wall of the stroke cavity  321  in inter-fluent communicable manner; and said cap receptacle end is female threaded for engaging with the male thread  202  of the damper cap  200 ; 
     Said damping block  90 , which is an adapted cylinder inserted in the stroke cavity  321  of the shock damper pod  320 , includes a closed top surface  91  and a bottom sole  92  with a dented receptacle  93 ; 
     Said damper cap  200 , which is engaged in the stroke cavity  321  of the shock damper pod  320 , includes a central holding dent  201  with an outer male thread  202  for engaging with female thread of the cap receptacle end; and 
     Said damping elastomer  100 , which is preferably a compressed spring, has outer diameter thereof is less than the inner diameter of the dented receptacle  93  in the damping block  90  and the inner diameter of the holding dent  201  in the damper cap  200  so that each end of which can be respectively inserted in the damping block  90  and damper cap  200 . 
     The assemble procedure is described as below: Firstly, insert the damping block  90  into the stroke cavity  321  of the shock damper pod  320  by heading the top surface  91  of the damping block  90  towards the shock damper pod  320 ; Secondly, inset anyone end of the compressed spring  100  into the dented receptacle  93  of the damping block  90 ; Thirdly, align and cap the holding dent  201  of the damper cap  200  over the other end of the compressed spring  100  in holding attachment manner; and Finally, insert and screw the male thread  202  of the damper cap  200  with the female thread of the cap receptacle end in the stroke cavity  321  in engagement manner so that the top surface  91  of the damping block  90  closely attaches the inner top wall of the stroke cavity  321  to block the distal end of the water outlet channel  35  (as shown in  FIG. 27 ). 
     Please refer to  FIG. 28  that shows the pumping operation for the fourth exemplary embodiment with the integrated shock damper of the present invention in the conventional diaphragm pump. The pumping operation is disclosed as below: when the motor  10  is powered on, the pressurized water Wp, which comes from the high-pressured chamber  34 , will flow into the water outlet channel  35  to impact on the top surface  91  of the damping block  90  in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring  100  in the stroke cavity  321  will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel  323  of the outtake jointer  322  for being used in the filter cartridge in the RO (Reverse Osmosis) purifier or RO purification system with required water pressure and steady flow manner. Accordingly, by the offset damping function of the compressed spring  100  with damping block  90  in the stroke cavity  321 , the shock and annoying noise in the pump upper hood  30  will be significantly reduced. Thereby, neither the shock and vibration of the water output pipe P 2  will happen nor the harmful affection on the other parts in the RO purifier or RO purification system will incur. Thus, the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood  30 . 
     Please refer to  FIGS. 29 and 30  that show the pumping operation for the fourth exemplary embodiment with the integrated shock damper of the present invention in the conventional diaphragm pump of automatic water cutoff type. The shock damper here basically comprises a shock damper pod  420 , a damping block  90 , a damping elastomer  100  and a damper cap  200  with male thread  202 , wherein said shock damper pod  420 , which is an extended hollow cylinder integrated with the water outlet channel  45  of the pump upper hood  40  on the diaphragm, comprises an outtake jointer  422 , a stroke cavity  421  and an open cap receptacle end, wherein said stroke cavity  421 , which is inwardly created from the open cap receptacle end with inner diameter being bigger than that of the water outlet channel  45 , is served for holding the damping block  90  and damping elastomer  100  therein as well as to provide a space for the to-and-fro reciprocal movement of the damping block  90 ; said outtake jointer  422 , which is disposed at the lateral wall of the shock damper pod  420  with male and female threaded manner for engaging with the water output pipe P 2  with a flange nut, has a water outtake channel  423  run throughout with a upper end connecting with the lateral wall of the stroke cavity  421  in inter-fluent communicable manner; and said cap receptacle end is female threaded for engaging with the male thread  202  of the damper cap  200  (as shown in  FIG. 29 ). The pumping operation is disclosed as below: when the motor  10  is powered on, the pressurized water Wp will flow into the water outlet channel  45  to impact on the top surface  91  of the damping block  90  in periodically pulsatile manner; Meanwhile, the resilient force of the compressed spring  100  in the stroke cavity  421  will offset the periodic impact of the pulsatile pressurized water Wp in counteracting damper manner so that the pressurized water Wp will become a steady flow without any pulsation to be directed out of the diaphragm pump via the water outtake channel  423  of the outtake jointer  422 . Accordingly, by the offset damping function of the compressed spring  100  with damping block  90  in the stroke cavity  421 , the shock damper of the present invention used in the conventional diaphragm pump provides double benefit effects that it not only can obviate the shock and vibration for the outlet pipe but also can reduce the shock and annoying noise in the pump upper hood  40  (as shown in  FIG. 30 ). 
     Please refer to  FIGS. 31 and 32  that show a combination of the third and the fourth exemplary embodiments for a “shock damper for outlet pipe of diaphragm pump” of the present invention in the conventional diaphragm pump. As disclosed above, the directing spoiler  95 , which is inserted into the water outlet channel  35  from the shock damper pod  320  in attachment manner (as shown in  FIG. 31 ), provides both directing function and spoiling function for the pressurized water Wp from the high-pressured chamber  34 , when the pressurized water Wp impacts on the top surface  91  of the damping block  90  (as shown in  FIG. 32 ). 
     Please refer to  FIGS. 33 and 34  that show a combination of the third and the fourth exemplary embodiments for a “shock damper for outlet pipe of diaphragm pump” of the present invention in the conventional diaphragm pump of automatic water cutoff type. As disclosed above, the directing spoiler  95 , which is inserted into the water outlet channel  45  from the shock damper pod  420  in attachment manner (as shown in  FIG. 33 ), provides both directing function and spoiling function for the pressurized water Wp from the water compressed cavity  402 , when the pressurized water Wp impacts on the top surface  91  of the damping block  90  (as shown in  FIG. 34 ). 
     Basing on the disclosure heretofore and experimental test, the applicant of the present invention proves that the present invention surely solve the “shock with annoying noise” issue in the outlet pipe of the diaphragm pump without any bad side-effect affecting to the other parts in the RO purifier or RO purification system after practical life test, which has valuable industrial applicability. Especially, the solving scenario contrived by the present invention is simple with innovative novelty beyond the obviousness of the prior arts, which meet the basic patentable criterion.