WO2014073124A1 - Hygienic cleaning device - Google Patents

Hygienic cleaning device Download PDF

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Publication number
WO2014073124A1
WO2014073124A1 PCT/JP2013/001289 JP2013001289W WO2014073124A1 WO 2014073124 A1 WO2014073124 A1 WO 2014073124A1 JP 2013001289 W JP2013001289 W JP 2013001289W WO 2014073124 A1 WO2014073124 A1 WO 2014073124A1
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WO
WIPO (PCT)
Prior art keywords
nozzle
washing
water
discharge port
cleaning
Prior art date
Application number
PCT/JP2013/001289
Other languages
French (fr)
Japanese (ja)
Inventor
良一 古閑
松村　充真
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201380002545.XA priority Critical patent/CN104024545B/en
Priority to EP13853501.8A priority patent/EP2918740B1/en
Priority to JP2014505422A priority patent/JP5594448B1/en
Publication of WO2014073124A1 publication Critical patent/WO2014073124A1/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/08—Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting

Definitions

  • the present invention relates to a sanitary washing device for washing a local part of a human body.
  • hot water storage-type sanitary washing devices tend to suppress the washing flow rate of hot water washing from the viewpoint of saving energy and ensuring the duration of use. Therefore, the maximum flow rate at the time of hot water cleaning is reduced from the conventional around 1.0 L / min to around 0.6 L / min.
  • the maximum washing flow rate is set to around 0.5 L / min due to the limitation of the electric input to the heater of the heat exchanger. Therefore, a pulsation pump, an air pump, or the like has been used to ensure a cleaning effect and a feeling of cleaning even when the flow rate is small. In this case, since a high pressure is required for the pulsation pump or the like, a special pump having a high pulsation effect is required.
  • a warm water washing toilet seat device including a jet portion to which a fluid element is applied has been disclosed when the maximum flow rate is 1.0 L / min (see, for example, Patent Document 1). ).
  • the warm water washing toilet seat device of Patent Document 1 if the washing flow rate is lowered to around 0.6 L / min, it is necessary to make the flow path very narrow. Therefore, it has not been put into practical use due to restrictions on the operation of the fluid element and the response speed.
  • the nozzle using the rapidly reducing flow path used in the fuel injection valve described in Patent Document 2 uses fluid in a flow velocity region where the flow velocity of the jet is at least 10 m / sec or more so that cavitation is reliably generated. It is assumed to be atomized. Therefore, in the case of a sanitary washing apparatus having a maximum washing flow rate of about 10 m / sec and a low washing flow rate, the washing water jet cannot be divided into water blocks of a certain size only by the action of cavitation. Therefore, when the cleaning flow rate is small, there is a problem that a high cleaning effect and excellent cleaning feeling cannot be obtained.
  • the present invention provides a sanitary cleaning device that discharges supplied cleaning water from a human body cleaning nozzle toward a human body local part, and the human body cleaning nozzle includes an inflow channel, an introduction channel, and a discharge channel.
  • a nozzle ejection portion having an outlet. Then, one of the inflow path and the introduction path is connected via a direction changing section having a throttle section, and the nozzle ejection section is connected to the other of the introduction paths, and the flow path cross section is defined by the introduction path and the discharge port. Is composed of a rapidly reduced flow path.
  • the throttle part is provided in the direction changing part that connects the inflow path and the introduction path of the human body washing nozzle.
  • the flow rate of the washing water injected from the inflow path into the direction changing portion is increased at the throttle portion.
  • the washing water collides with the inner wall surface 22a of the introduction path 22 in a state where the flow velocity is high, and the flow direction is changed, thereby generating a turbulence such as a vortex in the washing water.
  • a high pulsation effect is imparted to the jet of cleaning water, and the cleaning water can be ejected from the discharge port of the nozzle ejection section.
  • the cleaning water flowing into the nozzle ejection portion is ejected in a state of being contracted from the discharge port by the nozzle ejection portion constituting the rapidly reducing flow path.
  • a space is formed on the outer periphery of the jet of the wash water that has flowed toward the discharge port and the inner peripheral wall of the discharge port.
  • air flows into the space formed by the outer periphery of the jet of cleaning water and the inner peripheral wall of the discharge port, and vortexes are generated by the cleaning water and air outside the outer periphery of the jet that has contracted. Mix.
  • FIG. 1 is a perspective view of a toilet apparatus equipped with a sanitary washing device according to Embodiment 1 of the present invention.
  • FIG. 2 is a front view of the remote control device of the sanitary washing device according to the embodiment.
  • FIG. 3 is a schematic diagram showing the configuration of the main body of the sanitary washing device according to the embodiment.
  • FIG. 4 is a cross-sectional view of the main part of the human body washing nozzle of the sanitary washing device according to the embodiment.
  • FIG. 5 is an enlarged cross-sectional view of a nozzle ejection portion in the human body washing nozzle of FIG. FIG.
  • FIG. 6 shows the operation when the aspect ratio L / D between the radius (D / 2) of the discharge port of the nozzle ejection portion and the flow path length L of the sanitary washing device according to the embodiment is around 0.5. It is a figure explaining.
  • FIG. 7 is a diagram for explaining the operation when the aspect ratio L / D of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment exceeds 1.
  • FIG. 8 is an operation explanatory diagram when the aspect ratio L / D of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment is smaller than 0.25.
  • FIG. 9 is a graph showing the relationship between the aspect ratio L / D and the jet load variation width in the human body washing nozzle of the sanitary washing device according to the embodiment.
  • FIG. 10 is a characteristic diagram of aspect ratio L / D and pressure loss in the human body washing nozzle of the sanitary washing device according to the embodiment.
  • FIG. 11 is an enlarged cross-sectional view in which the corner of the inflow portion of the discharge port of the nozzle ejection portion in the human body washing nozzle of FIG. 4 is an acute angle.
  • FIG. 12 is a longitudinal sectional view of a human body cleaning nozzle of a sanitary cleaning device according to Embodiment 2 of the present invention. 13 is a graph showing the load fluctuation width of the jet flow in the human body washing nozzle of FIG.
  • FIG. 14 is a longitudinal sectional view of another example of the human body washing nozzle according to the embodiment.
  • FIG. 15 is a cross-sectional view of a pulsation pump according to Embodiment 3 of the present invention.
  • Embodiment 1 a sanitary washing device and a toilet device including the same according to Embodiment 1 of the present invention will be described with reference to FIG.
  • FIG. 1 is a perspective view of a toilet apparatus equipped with a sanitary washing device according to Embodiment 1 of the present invention.
  • a toilet apparatus 1000 includes at least a sanitary washing apparatus 100, a toilet bowl 700, an entrance detection sensor 600, and the like, and the sanitary washing apparatus 100 is mounted on the toilet bowl 700.
  • the sanitary washing device 100 includes a main body 200, a remote operation device 300, a toilet seat 400, a lid 500, and the like.
  • the main body 200 incorporates a seating sensor 610 provided in the upper front portion and a cleaning water supply mechanism (see FIG. 3) controlled by the control unit 4, and the toilet seat 400 and the lid 500 are attached to be freely opened and closed.
  • the seating sensor 610 is composed of, for example, a reflective infrared sensor, and detects the presence or absence of a user on the toilet seat 400 by detecting infrared light reflected from the human body.
  • one of the washing water supply mechanisms built in the main body 200 is connected to a toilet nozzle 40 provided at the lower front of the main body 200, and the other is connected to a water pipe.
  • the toilet nozzle 40 is shown in a state of protruding to the inside of the toilet 700.
  • the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the toilet nozzle 40.
  • the supplied wash water is ejected from the toilet nozzle 40 to a wide area on the inner surface of the toilet bowl 700, and in the case of rear washing of the toilet bowl, the back side of the inner surface of the toilet bowl 700 is drawn from the toilet nozzle 40. Wash water out.
  • the cleaning water supply mechanism built in the main body 200 is connected to the nozzle unit 20 (see FIG. 3) including the posterior nozzle 1, the bidet nozzle 2, and the nozzle cleaning nozzle 3 which are human body cleaning nozzles. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the nozzle unit 20. Then, the supplied cleaning water is ejected from the nozzle unit 20 such as the buttocks nozzle 1 and the bidet nozzle 2 to the user's local area. Further, the cleaning water supplied to the nozzle cleaning nozzle 3 of the nozzle unit 20 is sprayed to the buttocks nozzle 1 and the bidet nozzle 2 of the nozzle unit 20 to clean them.
  • the remote operation device 300 has a plurality of switches, and is attached to a place where a user sitting on the toilet seat 400 can operate, for example.
  • the room entry detection sensor 600 is composed of, for example, a reflective infrared sensor, and is attached to the entrance of a toilet room.
  • the room entry detection sensor 600 detects that the user has entered the toilet room when detecting infrared rays reflected from the human body.
  • control unit 4 (see FIG. 3) of the main body unit 200 controls the operation of each unit of the sanitary washing device 100 based on signals transmitted from the remote operation device 300, the room entry detection sensor 600, and the seating sensor 610.
  • FIG. 2 is a front view of the remote operation device of the sanitary washing device in the same embodiment.
  • the remote operation device 300 includes a wide cleaning switch 305, a rhythm cleaning switch 306, water setting switches 307 and 308, a move cleaning switch 309, and a cleaning position setting switch 310 provided on the upper portion of the controller main body 301. 311, and a stop switch 302, a butt switch 303, and a bidet switch 304, which are provided at the bottom of the controller main body 301 and instruct to stop the cleaning operation.
  • a predetermined signal corresponding to each switch is wirelessly transmitted from the remote operation device 300 to the main body 200, for example.
  • the control part 4 (refer FIG. 3) of the main-body part 200 controls operation
  • the control unit 4 moves the nozzle unit 20 of the main body unit 200 such as the buttocks nozzle 1 or the bidet nozzle 2 to eject cleaning water, Clean the user's area.
  • FIG. 3 is a schematic diagram showing the configuration of the main body of the sanitary washing device according to the embodiment.
  • the main body 200 of the sanitary washing device 100 includes a control unit 4, a branch tap 5, a strainer 6, a solenoid valve 7, an air release unit 8, a constant flow valve 9, a heat exchanger 12, and a temperature sensor. 13a, 13b, water pump 14, buffer tank 15, switching valve 16, nozzle unit 20, vacuum breaker 31, toilet nozzle 40, toilet nozzle motor 40m, and the like.
  • the nozzle part 20 of the main-body part 200 is comprised from the buttocks nozzle 1, the bidet nozzle 2, and the nozzle cleaning nozzle 3 as mentioned above, and the switching valve 16 contains the switching valve motor 16m.
  • a branch tap 5 is inserted in a water supply pipe 201 that is a water supply source, and is connected to a human body washing water flow path 202 that reaches a butt nozzle 1 and a bidet nozzle 2 that are human washing nozzles.
  • the open air part 8 which has the tank 8a provided with the strainer 6, the constant flow valve 9, the electromagnetic valve 7, the vacuum breaker 31, and the relief valve 51, the temperature sensor 13a, the heat exchanger 12, the temperature The sensor 13b, the water pump 14, the buffer tank 15, and the switching valve 16 are inserted in order from the branch water tap 5.
  • the toilet nozzle 40 is connected to the end of the toilet flushing water flow path 205 branched from the human body washing water flow path 202 by the switching valve 16.
  • a toilet nozzle motor 40m is attached to the toilet nozzle 40m.
  • tap water flowing through the water pipe 201 is supplied to the strainer 6 by the branch tap 5 as cleaning water. Then, dust and impurities contained in the cleaning water are removed by the strainer 6.
  • control unit 4 controls the electromagnetic valve 7 to switch the supply state of the cleaning water.
  • the pressure of the washing water flowing through the human body washing water flow path 202 through the constant flow valve 9 made of a variable orifice made of rubber whose orifice diameter is changed by the working water pressure is reduced.
  • the washing water controlled by the electromagnetic valve 7 is supplied to the heat exchanger 12 via the atmosphere opening part 8 described in detail below.
  • the heat exchanger 12 heats the cleaning water supplied through the human body cleaning water flow path 202 to a predetermined temperature such as 40 ° C., for example.
  • the water pump 14 connected to the heat exchanger 12 is driven and controlled by the control unit 4, and cleaning water having a flow rate corresponding to the operating speed of the water pump 14 is discharged from the butt nozzle 1 or the bidet nozzle 2 which is a human body cleaning nozzle. Is done. Therefore, the heating operation of the heat exchanger 12 is controlled by the control unit 4 based on the measured temperature value measured by the temperature sensors 13 a and 13 b and the control flow rate by the water pump 14.
  • the wash water heated by the heat exchanger 12 is pumped to the switching valve 16 through the buffer tank 15 by the water pump 14.
  • the switching valve 16 is controlled to be switched to the butt nozzle 1 or the bidet nozzle 2 or the nozzle cleaning nozzle 3 which is a human body cleaning nozzle by the control unit 4.
  • the switching valve 16 switches and controls the toilet nozzle 40 to be discharged onto the toilet bowl surface for pre-washing the toilet bowl and rear washing of the toilet bowl.
  • the buffer tank 15 acts as a temperature buffer for the heated washing water. That is, the occurrence of uneven temperature in the wash water pumped to the switching valve 16 is suppressed.
  • the total capacity of the heat exchanger 12 and the buffer tank 15 is preferably 15 cc to 30 cc, and more preferably 20 cc to 25 cc.
  • the capacity of the heat exchanger 12 and the buffer tank 15 becomes a factor of response delay when the flow rate to be ejected is set to 500 cc / min. Therefore, when the capacities of the heat exchanger 12 and the buffer tank 15 are 25 cc, the influence on the response delay is about 5% (25/500), which is about 3 seconds when converted into time.
  • the discharge time of the cleaning water discharged from the nozzle normally operates within 10 seconds, if the response delay time by a heat exchanger or the like is within 3 seconds, it can be absorbed sufficiently, so the capacity is in the above range. If so, no problem.
  • control unit 4 controls the operation of the switching valve motor 16m and switches the switching valve 16 to any one of the buttocks nozzle 1, the bidet nozzle 2, the nozzle cleaning nozzle 3, and the toilet nozzle 40, and the buffer tank 15 is switched. Then, the washing water pumped from the water pump 14 is supplied. Accordingly, the washing water is ejected from any one of the butt nozzle 1, the bidet nozzle 2, the nozzle washing nozzle 3, and the toilet nozzle 40.
  • the buttocks nozzle 1 and the bidet nozzle 2 are used for cleaning the user's local area.
  • the nozzle cleaning nozzle 3 is used for cleaning portions of the buttocks nozzle 1 and the bidet nozzle 2 that protrude into the toilet bowl 700.
  • the toilet nozzle 40 is used for cleaning the inside of the toilet.
  • FIG. 4 is a cross-sectional view of the main part of the human body washing nozzle of the sanitary washing device according to the embodiment.
  • FIG. 5 is an enlarged cross-sectional view of a nozzle ejection portion in the human body washing nozzle of FIG.
  • the human body washing nozzle 1 protrudes from the main body 200 of the sanitary washing device 100 into the toilet bowl 700 during washing by a motor drive mechanism (not shown), and retracts after washing. And it is comprised so that it may drive so that it may store in the main-body part 200.
  • FIG. FIG. 4 omits the motor driving mechanism and the like, and shows only the tip portion of the human body washing nozzle 1.
  • a posterior nozzle 1 and a bidet nozzle 2 are provided in one human body washing nozzle 1.
  • the tail nozzle 1 of the present embodiment includes at least an inflow path 21, an introduction path 22, a nozzle ejection section 26 having a discharge port 23, and a direction changing section 27 having a throttle section 25a. It is configured.
  • the inflow path 21 supplies cleaning water from the cleaning water supply mechanism shown in FIG.
  • the direction changing portion 27 is configured to connect to the inflow passage 21 and one side of the introduction passage 22 arranged in a substantially right angle (including right angle) direction with respect to the inflow passage 21, and changes the flow direction of the washing water. To do. Further, the restricting portion 25 a of the direction changing portion 27 increases the flow velocity by restricting the flow path of the cleaning water supplied from the inflow path 21, and causes the cleaning water to collide with the inner wall surface 22 a of the introduction path 22.
  • the introduction path 22 guides the cleaning water whose flow velocity is increased by the throttle part 25 a of the direction changing part 27 to the nozzle ejection part 26.
  • the bottom 22 b of the introduction path 22 is preferably lower than the lowermost part 21 a of the inflow path 21 of the direction changing section 27. Thereby, disturbance can be effectively generated in the cleaning water flowing into the introduction path 22.
  • the nozzle ejection part 26 is composed of a discharge port 23 having an inflow part 23b connected to the other side of the introduction path 22 and an outlet part 23a. Then, as shown in FIG. 5, for example, from the introduction path 22 having a diameter of 3 mm, the rapidly reducing flow path in which the flow path cross section described below is rapidly reduced through the inflow portion 23 b of the discharge port 23 having a diameter of 1.3 mm. Is configured.
  • the discharge port 23 of the nozzle ejection portion 26 has an aspect ratio (L) between the flow path length L of the discharge port 23 from the inflow portion 23b side to the outlet portion 23a side and the diameter D of the discharge port 23. / D) is set to 0.25 to 0.75, preferably 0.4 to 0.7.
  • the bottom nozzle 1 of the present embodiment is configured, and the washing water from the washing water supply mechanism passes through the inflow path 21, the direction changing section 27, and the introduction path 22, and the outlet of the discharge port 23 of the nozzle ejection section 26. It ejects from the part 23a, and the local part of a human body is wash
  • the aspect ratio (L / D) between the flow path length L of the discharge port and the diameter D of the discharge port is changed from 0.25 to 0.75.
  • FIG. 6 shows the operation and effect when the aspect ratio (L / D) between the discharge port radius (D / 2) and the flow path length L of the sanitary washing device according to the embodiment is about 0.5. It is a figure explaining.
  • FIG. 7 is a diagram for explaining the operation and effect when the aspect ratio (L / D) of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment exceeds 1.
  • FIG. 8 is a diagram for explaining operations and effects when the aspect ratio (L / D) of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment is smaller than 0.25.
  • the cleaning water is formed between the inflow portion 23 b and the outlet portion 23 a of the discharge port 23, between the outer periphery of the cleaning water jet and the inner peripheral wall 23 d of the discharge port 23.
  • a space s is formed.
  • the space s comprised by the jet flow outer periphery and the inner peripheral wall 23d of the discharge outlet 23 becomes the largest.
  • the streamline of the contracted portion becomes saturated at a distance of about half the diameter (D) of the discharge port 23 from the contraction start (corner 23c), and the contracted flow velocity is maximum. It is known that That is, the contracted flow velocity and the amount of negative pressure are maximized at a position about half the diameter (D) of the discharge port 23. Therefore, the opening area of the air flowing into the negative pressure portion of the cleaning water generated at the constriction portion of the cleaning water at the discharge port 23 is maximized. This minimizes the distance from the outlet 23a of the discharge port 23 to the center of the vortex 29 generated between the contracted flow and the inner peripheral wall 23d of the discharge port 23. As a result, air easily flows into the space s from the opening of the outlet portion 23a of the discharge port 23, and the inflowed air is taken into the jet of cleaning water.
  • the space s formed by the outer periphery of the jet of cleaning water and the inner peripheral wall 23d of the discharge port 23 is maximized.
  • the nozzle ejection portion 26 is configured with a predetermined aspect ratio. Therefore, the outer periphery of the washing water jet can be expanded into the space s, and air can be taken into the jet. Thereby, even when the jet of washing water from the human body washing nozzle has a small flow rate, the washing water is divided into water bodies having a size that provides a strong feeling of washing, and the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26 is obtained. Wash water can be spouted from.
  • the space s formed by the outer periphery of the jet of the washing water contracted and the inner peripheral wall 23 d of the discharge port 23 of the nozzle ejection section 26 is washed away from the jet of the contracted current.
  • a vortex 29 is generated by water and air taken from the outside into the space s.
  • air is further taken in into the low pressure part by the generated vortex 29 and mixed with the washing water.
  • the mixing phenomenon of the cleaning water and air is not performed uniformly, the lump in which the air and water are mixed pulsates and is ejected from the outlet portion 23 a of the discharge port 23 of the nozzle ejection portion 26.
  • the washing water can be further divided into water bodies having a size that provides a strong feeling of washing.
  • the vortex 29 and the corner 23c of the inflow part 23b of the discharge port 23 are set. Cavitation occurs as a starting point.
  • a larger pulsation can be imparted to the wash water ejected from the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26.
  • the cleaning is performed by the inflow section 23 b of the ejection opening 23.
  • the flow of water has an aspect ratio (L / D) of around 1, and is reattached to the inner peripheral wall 23d of the discharge port 23. Even when the aspect ratio (L / D) is greater than 1, the state where the cleaning water is reattached to the inner peripheral wall 23d of the discharge port 23 is continued.
  • the flow rate of the washing water is around 10 m / sec. Therefore, the flow of the cleaning water that has reattached to the inner peripheral wall 23d of the discharge port 23 of the nozzle ejection portion 26 becomes a stable flow with reduced pulsation.
  • the nozzle ejection portion 26 having an aspect ratio (L / D) exceeding 1 is not suitable for the human body washing nozzle of the sanitary washing apparatus of the present embodiment.
  • the outer periphery of the washing water jet becomes larger, and thus the flow velocity becomes smaller.
  • the opening area of the space s is reduced, the amount of air taken in is also reduced. For this reason, the pulsation pressure of the washing water ejected from the outlet 23a of the discharge port 23 of the nozzle ejection part 26 and the oscillating property are lowered, and the washing effect and the washing feeling are lowered.
  • the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection section 26 is 0.75, more preferably 0.7 or less.
  • the flow of the washed water is ejected from the outlet portion 23a of the discharge port 23 in a state of being contracted. Therefore, even after being ejected from the outlet portion 23a of the discharge port 23, the jet of cleaning water gathers at the center to a certain distance, and contracts so that the diameter of the outer periphery of the jet becomes small. Thereby, the wash water ejected from the outlet part 23a of the discharge port 23 of the nozzle ejection part 26 basically exhibits a stable behavior.
  • the flow path length L (distance) from when the cleaning water starts to contract from the inflow portion 23b of the discharge port 23 and ejects from the outlet portion 23a is short. Therefore, the vortex 29 generated in the space s due to the flow of the cleaning water separated at the corner 23c of the inflow portion 23b of the discharge port 23 is reduced. As a result, since the amount of reduced pressure generated by the negative pressure at the contracted portion formed by the discharge port 23 is reduced, cavitation is less likely to occur.
  • the air passage to the outlet 23a of the discharge port 23 of the nozzle ejection part 26 is narrow because the distance from the start of the contraction of the cleaning water is small. As a result, the inflow amount of air taken into the space s is also reduced.
  • the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection section 26 is smaller than 0.25, the washing water jet is less likely to generate pulsation. Therefore, the pulsation effect of the jet is low, and it is not suitable for the human body washing nozzle of the sanitary washing device of the present embodiment.
  • FIG. 9 is a graph showing the relationship between the aspect ratio (L / D) and the load fluctuation width of the jet in the human body washing nozzle of the sanitary washing device according to the embodiment. In the figure, actual measurement values (black square points) and average values thereof (solid lines) are shown.
  • the load fluctuation range is maximum when the aspect ratio (L / D) is near 0.5, and the pulsation effect is observed when the aspect ratio (L / D) is between 0.25 and 0.75. It turns out that it is obtained.
  • the aspect ratio (L / D) is 0.4 to 0.7, a high load fluctuation range of, for example, 4 gw or more can be obtained. Even if the aspect ratio (L / D) is 0.75 or more, a large load fluctuation range can be obtained.
  • the flow rate of the cleaning water is small and the flow rate is low, the cleaning effect and the cleaning feeling are improved. descend.
  • the configuration of the nozzle ejection portion 26 having an aspect ratio (L / D) of 0.75 or more is not preferable.
  • FIG. 10 is a diagram showing the relationship between the flow rate of cleaning water and the pressure loss with respect to a predetermined aspect ratio L / D of the human body washing nozzle of the sanitary washing device according to the embodiment.
  • FIG. 10 shows an example in which the aspect ratio (L / D) of the human body washing nozzle is set to 0.5.
  • the solid line in a figure has shown the examination result of the flow volume and pressure loss of the wash water which ejects of this Embodiment.
  • the broken line in the figure shows the relationship between the flow rate and the pressure loss in a state where no pulsation or separation occurs in the jetted washing water.
  • the flow rate of cleaning water is sufficient even at 0.6 L / min. It can be seen that the wash water can be ejected in a pulsating state.
  • the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection section 26 of the sanitary washing device of the present embodiment is preferably set in the range of 0.25 to 0.75. Furthermore, as described with reference to FIG. 9, it is more preferable to set the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection portion 26 in the range of 0.4 to 0.7. As a result, even if the flow rate is small, the load fluctuation range of the pulsation of the cleaning water can be increased, so that a higher cleaning effect and a better cleaning feeling can be obtained.
  • the corner 23 c of the inflow portion 23 b of the discharge port 23 of the nozzle ejection portion 26 causes the cleaning water flowing into the nozzle ejection portion 26 to flow down and the inner peripheral wall 23 d of the discharge port 23. Separate the flow from. Therefore, it is important to pulsate the jet of washing water by generating the vortex 29 generated in the wake. Therefore, in the present embodiment, the angle ⁇ of the corner 23c is provided at a substantially right angle (including a right angle) from the inner peripheral wall 23d of the discharge port 23 toward the inflow portion 23b. At this time, generally, the corner 23c is likely to have an R shape by processing or the like, and the R shape affects the separation of the flow of the cleaning water.
  • the R shape of the corner 23c is formed so that the radius of curvature is 0.1 mm or less. Accordingly, the flow of the cleaning water can be effectively separated from the inner peripheral wall 23d of the discharge port 23 at the corner 23c of the inflow portion 23b of the discharge port 23 of the nozzle ejection portion 26. Then, air is mixed in the jet of cleaning water flowing through the inner peripheral wall 23d of the discharge port 23, and the jet of cleaning water is easily divided. As a result, the pulsation effect can be effectively imparted to the cleaning water ejected from the human body cleaning nozzle.
  • an angle ⁇ of an angle 23c going outward from the inner peripheral wall 23d of the discharge port 23 to the inflow portion 23b that is, an angle ⁇ of an angle 23c formed by the inner peripheral wall 23d and the inflow portion 23b
  • You may form at an acute angle.
  • the discharge port 23 is formed of, for example, a resin molded product
  • the flow of the cleaning water is more surely flowed at the corner 23c between the inflow portion 23b of the discharge port 23 and the inner peripheral wall 23d.
  • 23d can be peeled off.
  • a protruding portion such as a burr may be provided from the inflow portion 23b toward the introduction path 22 along the inner peripheral wall 23d of the discharge port 23 of the nozzle ejection portion 26.
  • protrusions such as burrs can be formed by punching the discharge port 23 of the nozzle ejection portion 26, for example, by punching a sheet metal such as stainless steel, or molding the resin.
  • angular 23c of the inflow part 23b of the discharge outlet 23 of the nozzle ejection part 26 can provide a sharper and sharper edge in the inflow part 23b into which the jet of washing water flows.
  • the flow of cleaning water can be more reliably separated from the inner peripheral wall 23d of the discharge port 23 at the edge portion of the burr.
  • the opening area (space s) of the air flowing into the negative pressure portion generated at the constricted flow portion of the cleaning water formed along the inner peripheral wall 23d of the discharge port 23 can be maximized to further facilitate the inflow of air. .
  • the jet of cleaning water from the human body cleaning nozzle has a small flow rate, the jet of cleaning water can be divided into water blocks of a size that provides a strong feeling of cleaning, and the pulsation effect can be enhanced. As a result, even with a small amount of cleaning water, a higher cleaning effect and a better cleaning feeling can be imparted.
  • Embodiment 2 the human body washing nozzle of the sanitary washing device in Embodiment 2 of the present invention will be described with reference to FIG.
  • FIG. 12 is a longitudinal sectional view of a human body cleaning nozzle of a sanitary cleaning device according to Embodiment 2 of the present invention.
  • the present embodiment is implemented in that a turbulence generating portion 25 is provided toward the nozzle ejection portion 26 at the bottom portion 22b of the introduction path 22 constituting the direction changing portion 27 of the human body washing nozzle. It differs from the human body washing nozzle of the sanitary washing device of form 1.
  • the turbulence generating unit 25 is preferably provided in the vicinity of the direction changing unit 27 or on the direction changing unit 27 side of the introduction path 22. Further, since other configurations, operations and effects are the same as those of the sanitary washing apparatus of the first embodiment, detailed description thereof is omitted.
  • the turbulence generation unit 25 of the present embodiment is, for example, a prismatic protrusion, and is provided upright from the bottom 22 b of the introduction path 22 toward the nozzle ejection unit 26.
  • the prismatic protrusion 25c constituting the turbulence generating unit 25 has, for example, a width of 2 mm (a direction orthogonal to the direction in which the cleaning water flows) and a thickness of 1 mm ( Formed in the direction in which the washing water flows.
  • the height of the prismatic protrusions constituting the turbulence generating part 25 (the direction toward the nozzle ejection part 26) is such that the upper surface 25c1 of the protrusions 25c extends from the lowermost part 21a of the inflow path 21 constituting the direction changing part 27.
  • the nozzle 21 is provided toward the nozzle ejection portion 26 within a range twice as large as the distance between the nozzle 21 and the lowermost portion of the throttle portion 25a.
  • the cleaning water whose flow velocity is increased by the throttle portion 25a constituting the direction changing portion 27 collides with the protrusion 25c constituting the turbulence generating portion 25 provided in the introduction path 22. Furthermore, the collided cleaning water is further disturbed more violently by going around to the back side of the protrusion 25c. Then, the disturbed washing water is ejected in a state where it is more effectively divided from the nozzle ejection portion 26 that forms the rapidly reducing flow path. As a result, the pulsation effect of the jet of cleaning water is further increased, and even when the jet of cleaning water has a small flow rate, a higher cleaning effect and a better feeling of cleaning can be obtained.
  • FIG. 13 is a graph showing the load fluctuation width of the jet in the human body washing nozzle of FIG. For comparison, FIG. 13 also shows the load fluctuation range of the jet flow in the case of a human body washing nozzle having only the nozzle ejection portion 26 that forms the rapidly reducing flow path without providing the throttle portion and the turbulence generation portion. Show.
  • the flow rate increases as the flow rate increases due to the throttle portion 25a.
  • the turbulence generation unit 25 is further provided, the fluctuation width of the load fluctuation width of the jet increases as the flow rate increases. For this reason, a jet of washing water having a high flow rate and a high flow velocity can have a large load fluctuation range, so that a preferable jet of washing water can be realized.
  • the flow rate of the cleaning water can be made as fast as possible by the throttle portion 25a. Furthermore, a pulsating jet flow with a large fluctuation width of the load variation width of the jet flow can be generated by causing the turbulence generating unit 25 to hit the washing water with an increased flow velocity to generate a turbulence such as a vortex flow.
  • the turbulence generating portion protrusion 25c in FIG. 13
  • the load fluctuation range of the jet can be increased. Furthermore, it can be seen that a high load fluctuation range can be obtained even when the flow rate of the cleaning water is 0.6 L / min or less. Thereby, even if the washing water has a small flow rate, the pulsation effect of the jet of washing water can be enhanced, and a higher washing effect and a better feeling of washing can be obtained.
  • the case where the upper surfaces of the protrusions 25c constituting the turbulence generating unit 25 have the same height has been described as an example, but the present invention is not limited to this.
  • the upper surface 25c1 of the protrusion 25c may be provided so as to be inclined downward (to the bottom 22b side of the introduction path 22) as the distance from the throttle portion 25a side increases. Thereby, the washing water colliding with the protrusion 25c can be effectively disturbed.
  • the present invention is not limited thereto.
  • a configuration in which a protrusion 25b is provided upstream of the throttle portion 25a may be employed.
  • the flow rate of the washing water flowing into the throttle portion can be increased with a simple configuration without providing the turbulence generating portion.
  • the pulsation effect of the jet of washing water ejected from the outlet 23a of the discharge port 23 of the nozzle ejection portion 26 can be enhanced.
  • FIG. 15 is a cross-sectional view of the pulsation pump according to Embodiment 3 of the present invention.
  • the sanitary washing device of the present embodiment is different from the sanitary washing device of each of the above embodiments in that the water pump 14 is a pulsation pump 14a.
  • the pulsation pump 14a is constituted by a positive displacement pump 14a will be described.
  • the positive displacement pump 14a includes a pump main body 81 having at least a cylindrical space 82, a pressure feed piston 83, a motor 86, a link mechanism 89, and the like.
  • the cylindrical space 82 of the pump body 81 is divided into a pump chamber 82a and a pump chamber 82b by the pressure feed piston 83.
  • the washing water inflow portion 84 is provided on one side of the pump body 81, and the washing water outflow portion 85 is provided on the other side.
  • the inflow part 84 is connected to the heat exchanger 12 via the human body washing water flow path 202, and the outflow part 85 is connected to the switching valve 16 via the human body washing water flow path 202.
  • the positive displacement pump 14a performs the following operation.
  • the cleaning water in the pump chamber 82a is discharged from the outflow portion 85a, the cleaning water is supplied from the inflow portion 84b into the pump chamber 82b.
  • the cleaning water in the pump chamber 82a is supplied from the inflow portion 84a, the cleaning water in the pump chamber 82b is discharged from the outflow portion 85b.
  • the pressure is alternately applied to the cleaning water in the pump chamber 82a or the pump chamber 82b by the vertical movement of the pressure-feed piston 83.
  • periodic pulsation can be given to the wash water of the inflow part 84 by changing the reciprocating speed of the pressure feed piston 83 in one rotation.
  • the pulsation pressure of the washing water is such that the minimum pressure during pulsation is substantially equal to the inflow pressure of the positive displacement pump 14a.
  • the maximum pulsating pressure is a pressure corresponding to the load of the positive displacement pump 14a and the volume change speed of the positive displacement pump 14a.
  • the pulsation pump 14a which is the positive displacement pump 14a, pulsates in advance to the nozzle ejection section 26 via the inflow path 21, the direction changing section 27, and the introduction path 22 of the human body washing nozzle 1. Wash water that has been given through. Therefore, the turbulent cleaning water promotes the disturbance of the cleaning water such as a vortex in the direction changing portion 27. Thereby, a higher pulsation effect can be imparted to the jet of washing water ejected from the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26 constituting the sudden reduction flow path.
  • the pulsation pump 14a having a smaller pulsation pressure can be used as the pulsation pump 14a because pulsation can be imparted to the jet of washing water at the nozzle ejection portion 26. Can do. And the jet of the wash water divided
  • the present invention is a sanitary cleaning device that discharges supplied cleaning water from a human body cleaning nozzle toward a human body part, and the human body cleaning nozzle includes an inflow path, an introduction path, and a discharge port. A nozzle jetting part. Then, one of the inflow path and the introduction path is connected via a direction changing section having a throttle section, and the nozzle ejection section is connected to the other of the introduction paths, and the flow path cross section is defined by the introduction path and the discharge port. Is composed of a rapidly reduced flow path.
  • the throttle part is provided in the direction changing part that connects the inflow path and the introduction path of the human body washing nozzle.
  • the flow rate of the washing water injected from the inflow path into the direction changing portion is increased at the throttle portion.
  • the wash water collides with the inner wall surface of the introduction path, and the direction of flow is changed by the direction changing portion, and turbulence such as vortex is generated in the wash water.
  • a high pulsation effect is imparted to the jet of cleaning water, and the cleaning water can be ejected from the discharge port of the nozzle ejection section.
  • the washing water flowing into the nozzle ejection portion is ejected in a contracted state from the discharge port by the nozzle ejection portion constituting the rapidly reducing flow path.
  • a space is formed on the outer periphery of the jet of the wash water that has flowed toward the discharge port and the inner peripheral wall of the discharge port.
  • air flows into the space formed by the outer periphery of the jet of cleaning water and the inner peripheral wall of the discharge port, and vortexes are generated by the cleaning water and air outside the outer periphery of the jet that has contracted. Mix.
  • the mixing phenomenon of washing water and air is not uniform, it flows out as a lump in which air and washing water are mixed.
  • the contracted flow of the washing water becomes the minimum diameter portion due to the rapidly reducing flow path at the outlet portion of the discharge port of the nozzle ejection portion.
  • a gap is formed between the washing water jet and the inner peripheral wall of the discharge port.
  • the nozzle ejection portion sets the aspect ratio (L / D) between the diameter D of the discharge port and the flow path length L of the discharge port from 0.25 to 0.75. May be. Further, in the nozzle ejection portion, the aspect ratio (L / D) between the diameter D of the ejection port and the flow path length L of the ejection port may be set to 0.4 to 0.7.
  • the minimum diameter portion (maximum flow velocity portion) of the contracted flow portion generated at the discharge port of the nozzle discharge portion can be substantially matched (including coincidence) with the position of the outlet portion of the discharge port.
  • the space constituted by the outer periphery of the washing water jet and the inner peripheral wall of the discharge port is maximized.
  • produces in the contraction part formed with the discharge outlet of a nozzle ejection part becomes the largest, and it becomes easy to flow in air.
  • the aspect ratio (L / D) from 0.25 to 0.75, or from 0.4 to 0.7, at the outlet portion of the discharge port of the nozzle discharge portion,
  • the space constituted by the peripheral walls can be maximized. Therefore, outside air flows into the space and is easily taken into the jet of cleaning water. And the air taken in in the jet of cleaning water increases the volume of the jet of cleaning water and increases the diameter of the outer periphery of the jet. At this time, since the outer periphery of the washing water jet has room to spread in the space, the air taken into the washing water can provide a strong feeling of washing even when the washing water jet from the human body washing nozzle has a small flow rate. It can be divided into water masses.
  • the direction changing portion may be configured to change the flow direction of the cleaning water flowing through the inflow path and the introduction path at substantially right angles.
  • the wash water flowing in from the inflow passage collides with the inner wall surface of the introduction passage, and the flow velocity distribution of the wash water toward the nozzle ejection portion changes.
  • the jet of washing water is divided at the nozzle jetting part constituting the sudden reduction flow path, and the washing water in the direction in which the human body washing nozzle protrudes (front-rear direction) is swung and discharged.
  • a sanitary washing device that has a high washing effect and a good feeling of washing.
  • the inflow portion of the discharge port of the nozzle ejection portion connected to the introduction path may have an acute angle from the outside of the inflow portion toward the inner peripheral wall of the discharge port. Good.
  • the flow of cleaning water can be reliably peeled off at the corner portion of the inflow portion of the discharge port of the nozzle ejection portion.
  • it acts so that air can easily flow into the negative pressure portion generated at the contracted flow portion formed by the nozzle ejection portion.
  • the jet of washing water from the human body washing nozzle has a small flow rate, it can be divided into water bodies having a size that provides a strong feeling of washing, and the washing effect and feeling of washing can be further improved.
  • a burr protruding toward the introduction path may be provided at the inflow portion of the discharge port.
  • angular part of the inflow part of the discharge outlet of a nozzle ejection part can be ensured, and the flow of washing water can be made to peel reliably in an edge part of a corner.
  • it acts so that it becomes easy to flow in air from the outside to the negative pressure part generated in the contraction part formed by the nozzle ejection part.
  • the jet of washing water from the human body washing nozzle has a small flow rate, it can be divided into water bodies having a size that provides a strong feeling of washing, and the washing effect and feeling of washing can be further improved.
  • a turbulence generating part that disturbs the flow of the cleaning water flowing from the inflow path through the throttle part may be provided in the introduction path on the direction changing part side.
  • the turbulence generating part may be constituted by a protrusion provided from the bottom of the introduction path toward the discharge port. Accordingly, it is possible to promote turbulence in the flow of the washing water flowing into the introduction path and further enhance the pulsation effect of the washing water ejected from the nozzle ejection portion.
  • the protrusion may be formed in a prismatic shape. Thereby, disturbance of the flow of the washing water flowing into the introduction path can be further promoted.
  • the upper surface of the protrusion may be inclined downward as it is separated from the throttle portion side. Therefore, the disturbance of the flow of the washing water flowing into the introduction path can be further promoted.
  • a pulsation pump may be provided upstream of the human body washing nozzle.
  • the pulsation pump with smaller pulsation pressure can be used using the pulsation which generate
  • the pulsating pump can be reduced in load while being able to be divided into water blocks of a size that can provide a preferable feeling of cleaning by the jet of cleaning water from the nozzle ejection part.

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Abstract

The present invention is a hygienic cleaning device that sprays cleaning water supplied thereto to private parts of the body from a body washing nozzle (1), said body washing nozzle (1) comprising: an inflow path (21); guiding paths (22); and a nozzle spray unit (26) having a discharge outlet (23). The inflow path (21) and one of the guiding paths (22) are connected via a direction-diverting unit (27) having a constricted section (25a). The nozzle spray unit (26) is connected to the other of the guiding paths (22) and comprises a rapidly contracting flow path in which the flow path cross-section rapidly contracts as a result of the guiding path (22) and the discharge outlet (23). As a result, a hygienic cleaning device can be achieved that has a cleaning effect and a cleaning feeling even for low flow rates.

Description

衛生洗浄装置Sanitary washing device
　本発明は、人体の局部を洗浄する衛生洗浄装置に関する。 The present invention relates to a sanitary washing device for washing a local part of a human body.
　従来から貯湯式の衛生洗浄装置においては、省エネルギーや使用持続時間の確保などの観点から、温水洗浄の洗浄流量を抑える傾向にある。そのため、温水洗浄時の最大流量が、従来の１．０Ｌ／ｍｉｎ前後から０．６Ｌ／ｍｉｎ前後にまで低下している。 Conventionally, hot water storage-type sanitary washing devices tend to suppress the washing flow rate of hot water washing from the viewpoint of saving energy and ensuring the duration of use. Therefore, the maximum flow rate at the time of hot water cleaning is reduced from the conventional around 1.0 L / min to around 0.6 L / min.
　また、瞬間式の衛生洗浄装置においては、熱交換器のヒータへの電気入力の制限から、最大洗浄流量が０．５Ｌ／ｍｉｎ前後に設定されている。そこで、流量が少なくても洗浄効果と洗浄感を確保するために、脈動ポンプや空気ポンプなどを使用していた。この場合、脈動ポンプなどに高い圧力が要望されるため、脈動効果の高い特殊なポンプが必要であった。 Also, in the instant type sanitary washing device, the maximum washing flow rate is set to around 0.5 L / min due to the limitation of the electric input to the heater of the heat exchanger. Therefore, a pulsation pump, an air pump, or the like has been used to ensure a cleaning effect and a feeling of cleaning even when the flow rate is small. In this case, since a high pressure is required for the pulsation pump or the like, a special pump having a high pulsation effect is required.
　近年、瞬間式や貯湯式の衛生洗浄装置における洗浄流量が接近してきている。そのため、瞬間式の衛生洗浄装置と同様な脈動ポンプや空気ポンプを、貯湯式の衛生洗浄装置に導入すれば、性能的には問題がなくなる、しかし、コスト的な問題やスペース的な制約から、貯湯式の衛生洗浄装置においては、ノズル噴出部単体で脈動を効果的に発生させる必要がある。 In recent years, the cleaning flow rate in an instant type or hot water storage type sanitary washing apparatus has been approaching. Therefore, if a pulsation pump or air pump similar to the instantaneous sanitary washing device is introduced into the hot water storage type sanitary washing device, there will be no problem in terms of performance, but due to cost problems and space constraints, In the hot water storage type sanitary washing device, it is necessary to effectively generate pulsation by the nozzle ejection unit alone.
　また、瞬間式の衛生洗浄装置においても、ノズル噴出部に脈動を発生させる機能を持たせて、脈動ポンプの負荷を低減することにより、さらに低コストの脈動ポンプの使用が要望されていた。 Also, even in the instant type sanitary washing apparatus, there has been a demand for the use of a pulsating pump at a lower cost by providing a function for generating pulsation in the nozzle ejection part and reducing the load of the pulsating pump.
　従来、ノズル噴出部で脈動を発生させる方法として、最大流量が１．０Ｌ／ｍｉｎの場合、流体素子を応用した噴流部を備えた温水洗浄便座装置が開示されている（例えば、特許文献１参照）。しかし、特許文献１の温水洗浄便座装置の場合、洗浄流量が０．６Ｌ／ｍｉｎ前後まで下げると、流路を非常に狭い構成にする必要がある。そのため、流体素子の動作や応答速度などの制約により実用されていなかった。 Conventionally, as a method for generating pulsation at a nozzle ejection portion, a warm water washing toilet seat device including a jet portion to which a fluid element is applied has been disclosed when the maximum flow rate is 1.0 L / min (see, for example, Patent Document 1). ). However, in the case of the warm water washing toilet seat device of Patent Document 1, if the washing flow rate is lowered to around 0.6 L / min, it is necessary to make the flow path very narrow. Therefore, it has not been put into practical use due to restrictions on the operation of the fluid element and the response speed.
　そこで、洗浄流量が少流量でも、洗浄効果と洗浄感の向上に効果のある噴流に脈動を与える方法として、例えば内燃機関の燃料噴射弁に使用されている噴出口径の小さな、急縮小流路を使用したノズルがある（例えば、特許文献２参照）。 Therefore, as a method of pulsating the jet that is effective for improving the cleaning effect and the feeling of cleaning even if the cleaning flow rate is small, for example, a rapidly reducing flow path having a small outlet diameter used for a fuel injection valve of an internal combustion engine is used. There is a nozzle used (see, for example, Patent Document 2).
　特許文献２に記載の急縮小流路を使用したノズルは、縮流部に発生する負圧により、キャビテーションが生じる。そして、発生したキャビテーションは、ノズル噴出口の穴全域に広がって、スーパーキャビテーションを発生する。これにより、液体と気体とが激しく混合して、流体の霧化を大幅に促進している。つまり、特許文献２に記載の急縮小流路を使用したノズルは、液体と気体とをノズル噴出口の中で強力に混合させる技術としては有用である。 In the nozzle using the rapidly reducing flow path described in Patent Document 2, cavitation occurs due to the negative pressure generated in the contracted portion. Then, the generated cavitation spreads over the entire hole of the nozzle ejection port to generate super cavitation. Thereby, the liquid and the gas are vigorously mixed, and the atomization of the fluid is greatly promoted. That is, the nozzle using the rapidly reducing flow path described in Patent Document 2 is useful as a technique for strongly mixing liquid and gas in the nozzle outlet.
　しかし、特許文献２に記載の燃料噴射弁に用いられる急縮小流路を使用したノズルは、キャビテーションが確実に発生するように噴流の流速が少なくとも１０ｍ／ｓｅｃ以上の流速域で使用して流体を霧化することを前提としている。そのため、洗浄水の流速が１０ｍ／ｓｅｃ前後が最大流速で、洗浄流量が少流量の衛生洗浄装置の場合、キャビテーションの作用のみでは、洗浄水の噴流をある程度の大きさの水塊に分断できない。そのため、洗浄流量が少ない場合、高い洗浄効果や優れた洗浄感が得られないという課題があった。 However, the nozzle using the rapidly reducing flow path used in the fuel injection valve described in Patent Document 2 uses fluid in a flow velocity region where the flow velocity of the jet is at least 10 m / sec or more so that cavitation is reliably generated. It is assumed to be atomized. Therefore, in the case of a sanitary washing apparatus having a maximum washing flow rate of about 10 m / sec and a low washing flow rate, the washing water jet cannot be divided into water blocks of a certain size only by the action of cavitation. Therefore, when the cleaning flow rate is small, there is a problem that a high cleaning effect and excellent cleaning feeling cannot be obtained.
特開２０００－１２０１４１号公報JP 2000-120141 A 特開２００３－８３２０５号公報JP 2003-83205 A
　上記課題を解決するために、本発明は、給水された洗浄水を人体洗浄ノズルから人体局部に向けて吐水する衛生洗浄装置であって、人体洗浄ノズルは、流入路と、導入路と、吐出口を有するノズル噴出部と、を備える。そして、流入路と導入路の一方とは、絞り部を有する方向転換部を介して接続され、ノズル噴出部は、導入路の他方と接続されるとともに、導入路と吐出口とにより流路断面が急縮小された急縮小流路から構成される。 In order to solve the above-described problems, the present invention provides a sanitary cleaning device that discharges supplied cleaning water from a human body cleaning nozzle toward a human body local part, and the human body cleaning nozzle includes an inflow channel, an introduction channel, and a discharge channel. A nozzle ejection portion having an outlet. Then, one of the inflow path and the introduction path is connected via a direction changing section having a throttle section, and the nozzle ejection section is connected to the other of the introduction paths, and the flow path cross section is defined by the introduction path and the discharge port. Is composed of a rapidly reduced flow path.
　この構成によれば、人体洗浄ノズルの流入路と導入路を接続する方向転換部に絞り部を設ける。これにより、流入路から方向転換部に注入される洗浄水の流速が絞り部で速くなる。そして、流速の速い状態で、洗浄水が導入路２２の内壁面２２ａに衝突するとともに、流れる方向が転換されることにより、洗浄水に渦などの流れの乱れを生成する。その結果、洗浄水の噴流に、高い脈動効果を付与して、ノズル噴出部の吐出口から洗浄水を噴出できる。 According to this configuration, the throttle part is provided in the direction changing part that connects the inflow path and the introduction path of the human body washing nozzle. As a result, the flow rate of the washing water injected from the inflow path into the direction changing portion is increased at the throttle portion. Then, the washing water collides with the inner wall surface 22a of the introduction path 22 in a state where the flow velocity is high, and the flow direction is changed, thereby generating a turbulence such as a vortex in the washing water. As a result, a high pulsation effect is imparted to the jet of cleaning water, and the cleaning water can be ejected from the discharge port of the nozzle ejection section.
　また、急縮小流路を構成するノズル噴出部により、ノズル噴出部に流入する洗浄水は、吐出口から縮流した状態で噴出する。このとき、ノズル噴出部において、吐出口に向かって、縮流した洗浄水の噴流外周と吐出口の内周壁に空間が形成される。そして、洗浄水の噴流外周と吐出口の内周壁で構成される空間に、外部から空気が流入して、縮流した噴流外周外の洗浄水と空気により渦が発生し、洗浄水と空気が混合する。このとき、洗浄水と空気との混合現象は一様にならないため、空気と洗浄水が混合された塊となって流出する。これにより、ノズル噴出部の吐出口から噴出する洗浄水に、脈動を付与できる。その結果、洗浄水が少流量の場合でも、高い洗浄効果と洗浄感に優れた衛生洗浄装置を実現できる。 Further, the cleaning water flowing into the nozzle ejection portion is ejected in a state of being contracted from the discharge port by the nozzle ejection portion constituting the rapidly reducing flow path. At this time, in the nozzle ejection portion, a space is formed on the outer periphery of the jet of the wash water that has flowed toward the discharge port and the inner peripheral wall of the discharge port. Then, air flows into the space formed by the outer periphery of the jet of cleaning water and the inner peripheral wall of the discharge port, and vortexes are generated by the cleaning water and air outside the outer periphery of the jet that has contracted. Mix. At this time, since the mixing phenomenon of the cleaning water and air is not uniform, it flows out as a lump in which the air and the cleaning water are mixed. Thereby, pulsation can be given to the washing water ejected from the discharge port of the nozzle ejection portion. As a result, it is possible to realize a sanitary washing apparatus that is excellent in high washing effect and feeling even when the washing water has a small flow rate.
図１は、本発明の実施の形態１における衛生洗浄装置を装着したトイレ装置の斜視図である。1 is a perspective view of a toilet apparatus equipped with a sanitary washing device according to Embodiment 1 of the present invention. 図２は、同実施の形態に係る衛生洗浄装置の遠隔操作装置の正面図である。FIG. 2 is a front view of the remote control device of the sanitary washing device according to the embodiment. 図３は、同実施の形態に係る衛生洗浄装置の本体部の構成を示す模式図である。FIG. 3 is a schematic diagram showing the configuration of the main body of the sanitary washing device according to the embodiment. 図４は、同実施の形態に係る衛生洗浄装置の人体洗浄ノズルの要部断面図である。FIG. 4 is a cross-sectional view of the main part of the human body washing nozzle of the sanitary washing device according to the embodiment. 図５は、図４の人体洗浄ノズルにおけるノズル噴出部を拡大した断面図である。FIG. 5 is an enlarged cross-sectional view of a nozzle ejection portion in the human body washing nozzle of FIG. 図６は、同実施の形態に係る衛生洗浄装置のノズル噴出部の吐出口の半径（Ｄ／２）と流路長さＬとのアスペクト比Ｌ／Ｄが０．５前後の場合の作用を説明する図である。FIG. 6 shows the operation when the aspect ratio L / D between the radius (D / 2) of the discharge port of the nozzle ejection portion and the flow path length L of the sanitary washing device according to the embodiment is around 0.5. It is a figure explaining. 図７は、同実施の形態に係る衛生洗浄装置のノズル噴出部の吐出口のアスペクト比Ｌ／Ｄが１を越える場合の作用を説明する図である。FIG. 7 is a diagram for explaining the operation when the aspect ratio L / D of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment exceeds 1. 図８は、同実施の形態に係る衛生洗浄装置のノズル噴出部の吐出口のアスペクト比Ｌ／Ｄが０．２５より小さい場合の作用説明図である。FIG. 8 is an operation explanatory diagram when the aspect ratio L / D of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment is smaller than 0.25. 図９は、同実施の形態に係る衛生洗浄装置の人体洗浄ノズルにおけるアスペクト比Ｌ／Ｄと噴流の荷重変動幅との関係を示すグラフである。FIG. 9 is a graph showing the relationship between the aspect ratio L / D and the jet load variation width in the human body washing nozzle of the sanitary washing device according to the embodiment. 図１０は、同実施の形態に係る衛生洗浄装置の人体洗浄ノズルにおけるアスペクト比Ｌ／Ｄと圧力損失の特性図である。FIG. 10 is a characteristic diagram of aspect ratio L / D and pressure loss in the human body washing nozzle of the sanitary washing device according to the embodiment. 図１１は、図４の人体洗浄ノズルにおけるノズル噴出部の吐出口の流入部の角を鋭角とした拡大断面図である。FIG. 11 is an enlarged cross-sectional view in which the corner of the inflow portion of the discharge port of the nozzle ejection portion in the human body washing nozzle of FIG. 4 is an acute angle. 図１２は、本発明の実施の形態２に係る衛生洗浄装置の人体洗浄ノズルの縦断面図である。FIG. 12 is a longitudinal sectional view of a human body cleaning nozzle of a sanitary cleaning device according to Embodiment 2 of the present invention. 図１３は、図１２の人体洗浄ノズルにおける噴流の荷重変動幅を示すグラフである。13 is a graph showing the load fluctuation width of the jet flow in the human body washing nozzle of FIG. 図１４は、同実施の形態に係る人体洗浄ノズルの別の例における縦断面図である。FIG. 14 is a longitudinal sectional view of another example of the human body washing nozzle according to the embodiment. 図１５は、本発明の実施の形態３に係る脈動ポンプの断面図である。FIG. 15 is a cross-sectional view of a pulsation pump according to Embodiment 3 of the present invention.
　以下、本発明の実施の形態に係る衛生洗浄装置およびトイレ装置について、図面を参照しながら説明する。なお、本実施の形態によって本発明が限定されるものではない。 Hereinafter, a sanitary washing device and a toilet device according to an embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.
　（実施の形態１）
　以下、本発明の実施の形態１における衛生洗浄装置およびそれを備えたトイレ装置について、図１を用いて説明する。 (Embodiment 1)
Hereinafter, a sanitary washing device and a toilet device including the same according to Embodiment 1 of the present invention will be described with reference to FIG.
　図１は、本発明の実施の形態１における衛生洗浄装置を装着したトイレ装置の斜視図である。 FIG. 1 is a perspective view of a toilet apparatus equipped with a sanitary washing device according to Embodiment 1 of the present invention.
　図１に示すように、本実施の形態のトイレ装置１０００は、少なくとも衛生洗浄装置１００と便器７００と入室検知センサ６００などから構成され、便器７００上に衛生洗浄装置１００が装着されている。 As shown in FIG. 1, a toilet apparatus 1000 according to the present embodiment includes at least a sanitary washing apparatus 100, a toilet bowl 700, an entrance detection sensor 600, and the like, and the sanitary washing apparatus 100 is mounted on the toilet bowl 700.
　衛生洗浄装置１００は、本体部２００、遠隔操作装置３００、便座部４００および蓋部５００などにより構成される。本体部２００は、正面上部に設けられる着座センサ６１０と制御部４で制御される洗浄水供給機構（図３参照）を内蔵し、便座部４００および蓋部５００が開閉自在に取り付けられる。着座センサ６１０は、例えば反射型の赤外線センサなどで構成され、人体から反射された赤外線を検出して、便座部４００上の使用者の存在の有無を検知する。 The sanitary washing device 100 includes a main body 200, a remote operation device 300, a toilet seat 400, a lid 500, and the like. The main body 200 incorporates a seating sensor 610 provided in the upper front portion and a cleaning water supply mechanism (see FIG. 3) controlled by the control unit 4, and the toilet seat 400 and the lid 500 are attached to be freely opened and closed. The seating sensor 610 is composed of, for example, a reflective infrared sensor, and detects the presence or absence of a user on the toilet seat 400 by detecting infrared light reflected from the human body.
　また、本体部２００に内蔵された洗浄水供給機構の一方は、本体部２００の正面下部に設けられる便器ノズル４０に接続され、他方は水道配管に接続される。なお、図１では、便器ノズル４０が便器７００の内側に突出している状態で示している。これにより、洗浄水供給機構は、水道配管から供給される洗浄水を便器ノズル４０に供給する。そして、便器のプレ洗浄の場合は、供給された洗浄水を便器ノズル４０から便器７００の内面の広い範囲に噴出し、便器の後部洗浄の場合は、便器ノズル４０から便器７００の内面の背面側に洗浄水を噴出する。 Also, one of the washing water supply mechanisms built in the main body 200 is connected to a toilet nozzle 40 provided at the lower front of the main body 200, and the other is connected to a water pipe. In FIG. 1, the toilet nozzle 40 is shown in a state of protruding to the inside of the toilet 700. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the toilet nozzle 40. In the case of pre-washing the toilet bowl, the supplied wash water is ejected from the toilet nozzle 40 to a wide area on the inner surface of the toilet bowl 700, and in the case of rear washing of the toilet bowl, the back side of the inner surface of the toilet bowl 700 is drawn from the toilet nozzle 40. Wash water out.
　さらに、本体部２００に内蔵された洗浄水供給機構は、人体洗浄ノズルであるおしりノズル１やビデノズル２、およびノズル洗浄用ノズル３からなるノズル部２０（図３参照）に接続されている。これにより、洗浄水供給機構は、水道配管から供給される洗浄水をノズル部２０に供給する。そして、供給された洗浄水は、おしりノズル１やビデノズル２などのノズル部２０から使用者の局部に噴出される。また、ノズル部２０のノズル洗浄用ノズル３に供給された洗浄水は、ノズル部２０のおしりノズル１やビデノズル２などに噴射され、それらを洗浄する。 Furthermore, the cleaning water supply mechanism built in the main body 200 is connected to the nozzle unit 20 (see FIG. 3) including the posterior nozzle 1, the bidet nozzle 2, and the nozzle cleaning nozzle 3 which are human body cleaning nozzles. Accordingly, the cleaning water supply mechanism supplies the cleaning water supplied from the water pipe to the nozzle unit 20. Then, the supplied cleaning water is ejected from the nozzle unit 20 such as the buttocks nozzle 1 and the bidet nozzle 2 to the user's local area. Further, the cleaning water supplied to the nozzle cleaning nozzle 3 of the nozzle unit 20 is sprayed to the buttocks nozzle 1 and the bidet nozzle 2 of the nozzle unit 20 to clean them.
　遠隔操作装置３００は、複数のスイッチを有し、例えば便座部４００上に着座する使用者が操作可能な場所に取り付けられる。 The remote operation device 300 has a plurality of switches, and is attached to a place where a user sitting on the toilet seat 400 can operate, for example.
　入室検知センサ６００は、例えば反射型の赤外線センサなどで構成され、トイレットルームの入口などに取り付けられる。そして、入室検知センサ６００は、人体から反射された赤外線を検出した場合に、トイレットルーム内に使用者が入室したことを検知する。 The room entry detection sensor 600 is composed of, for example, a reflective infrared sensor, and is attached to the entrance of a toilet room. The room entry detection sensor 600 detects that the user has entered the toilet room when detecting infrared rays reflected from the human body.
　また、本体部２００の制御部４（図３参照）は、遠隔操作装置３００、入室検知センサ６００および着座センサ６１０から送信される信号に基づいて、衛生洗浄装置１００の各部の動作を制御する。 Further, the control unit 4 (see FIG. 3) of the main body unit 200 controls the operation of each unit of the sanitary washing device 100 based on signals transmitted from the remote operation device 300, the room entry detection sensor 600, and the seating sensor 610.
　以下に、本実施の形態における衛生洗浄装置１００の遠隔操作装置３００の構成について、図２を用いて説明する。 Hereinafter, the configuration of the remote operation device 300 of the sanitary washing device 100 in the present embodiment will be described with reference to FIG.
　図２は、同実施の形態における衛生洗浄装置の遠隔操作装置の正面図である。 FIG. 2 is a front view of the remote operation device of the sanitary washing device in the same embodiment.
　図２に示すように、遠隔操作装置３００は、コントローラ本体部３０１の上部に設けられたワイド洗浄スイッチ３０５、リズム洗浄スイッチ３０６、水勢設定スイッチ３０７、３０８、ムーブ洗浄スイッチ３０９、洗浄位置設定スイッチ３１０、３１１と、コントローラ本体部３０１の下部に設けられた洗浄動作の停止を指示する停止スイッチ３０２、おしりスイッチ３０３、ビデスイッチ３０４を備えている。 As shown in FIG. 2, the remote operation device 300 includes a wide cleaning switch 305, a rhythm cleaning switch 306, water setting switches 307 and 308, a move cleaning switch 309, and a cleaning position setting switch 310 provided on the upper portion of the controller main body 301. 311, and a stop switch 302, a butt switch 303, and a bidet switch 304, which are provided at the bottom of the controller main body 301 and instruct to stop the cleaning operation.
　そして、図１に示すように、まず、使用者が遠隔操作装置３００の各スイッチを操作すると、遠隔操作装置３００から本体部２００に各スイッチに応じた所定の信号が、例えば無線送信される。本体部２００の制御部４（図３参照）は、受信した信号に基づいて本体部２００および便座部４００の各構成部の動作を制御する。例えば、使用者がおしり洗浄ボタン３０３またはビデ洗浄ボタン３０４を押下操作した場合、制御部４はおしりノズル１またはビデノズル２などの本体部２００のノズル部２０を移動して洗浄水を噴出して、使用者の局部を洗浄する。 As shown in FIG. 1, first, when the user operates each switch of the remote operation device 300, a predetermined signal corresponding to each switch is wirelessly transmitted from the remote operation device 300 to the main body 200, for example. The control part 4 (refer FIG. 3) of the main-body part 200 controls operation | movement of each structure part of the main-body part 200 and the toilet seat part 400 based on the received signal. For example, when the user presses down the buttocks cleaning button 303 or the bidet cleaning button 304, the control unit 4 moves the nozzle unit 20 of the main body unit 200 such as the buttocks nozzle 1 or the bidet nozzle 2 to eject cleaning water, Clean the user's area.
　以下に、本実施の形態の衛生洗浄装置１００の本体部２００における給水系および制御系の構成と作用について、図３を用いて説明する。 Hereinafter, the configuration and operation of the water supply system and the control system in the main body 200 of the sanitary washing device 100 of the present embodiment will be described with reference to FIG.
　図３は、同実施の形態に係る衛生洗浄装置の本体部の構成を示す模式図である。 FIG. 3 is a schematic diagram showing the configuration of the main body of the sanitary washing device according to the embodiment.
　図３に示すように、衛生洗浄装置１００の本体部２００は、制御部４、分岐水栓５、ストレーナ６、電磁弁７、大気開放部８、定流量弁９、熱交換器１２、温度センサ１３ａ、１３ｂ、水ポンプ１４、バッファタンク１５、切替弁１６、ノズル部２０、バキュームブレーカ３１、便器ノズル４０および便器ノズルモータ４０ｍなどから構成されている。また、本体部２００のノズル部２０は、上述したようにおしりノズル１、ビデノズル２およびノズル洗浄用ノズル３から構成され、切替弁１６は切替弁モータ１６ｍを含んでいる。 As shown in FIG. 3, the main body 200 of the sanitary washing device 100 includes a control unit 4, a branch tap 5, a strainer 6, a solenoid valve 7, an air release unit 8, a constant flow valve 9, a heat exchanger 12, and a temperature sensor. 13a, 13b, water pump 14, buffer tank 15, switching valve 16, nozzle unit 20, vacuum breaker 31, toilet nozzle 40, toilet nozzle motor 40m, and the like. Moreover, the nozzle part 20 of the main-body part 200 is comprised from the buttocks nozzle 1, the bidet nozzle 2, and the nozzle cleaning nozzle 3 as mentioned above, and the switching valve 16 contains the switching valve motor 16m.
　また、図３に示すように、水の供給源である水道配管２０１に分岐水栓５が介挿され、人体洗浄ノズルであるおしりノズル１、ビデノズル２に到る人体洗浄水流路２０２に接続される。そして、人体洗浄水流路２０２には、ストレーナ６、定流量弁９、電磁弁７、バキュームブレーカ３１およびリリーフ弁５１を備えるタンク８ａを有する大気開放部８、温度センサ１３ａ、熱交換器１２、温度センサ１３ｂ、水ポンプ１４、バッファタンク１５、切替弁１６が、分岐水栓５から順に介挿されている。 Further, as shown in FIG. 3, a branch tap 5 is inserted in a water supply pipe 201 that is a water supply source, and is connected to a human body washing water flow path 202 that reaches a butt nozzle 1 and a bidet nozzle 2 that are human washing nozzles. The And in the human body washing water flow path 202, the open air part 8 which has the tank 8a provided with the strainer 6, the constant flow valve 9, the electromagnetic valve 7, the vacuum breaker 31, and the relief valve 51, the temperature sensor 13a, the heat exchanger 12, the temperature The sensor 13b, the water pump 14, the buffer tank 15, and the switching valve 16 are inserted in order from the branch water tap 5.
　さらに、人体洗浄水流路２０２から切替弁１６によって分岐された便器洗浄水流路２０５の端部には、便器ノズル４０が接続されている。そして、便器ノズル４０ｍには、便器ノズルモータ４０ｍが取り付けられている。 Furthermore, the toilet nozzle 40 is connected to the end of the toilet flushing water flow path 205 branched from the human body washing water flow path 202 by the switching valve 16. A toilet nozzle motor 40m is attached to the toilet nozzle 40m.
　つぎに、衛生洗浄装置１００の本体部２００における洗浄水の流れおよび制御部４による本体部２００の各構成部の制御について、図３を用いて説明する。 Next, the flow of cleaning water in the main body 200 of the sanitary washing device 100 and the control of each component of the main body 200 by the control unit 4 will be described with reference to FIG.
　まず、図３に示すように、水道配管２０１を流れる水道水が、洗浄水として分岐水栓５によりストレーナ６に供給される。そして、洗浄水に含まれるごみや不純物などが、ストレーナ６により除去される。 First, as shown in FIG. 3, tap water flowing through the water pipe 201 is supplied to the strainer 6 by the branch tap 5 as cleaning water. Then, dust and impurities contained in the cleaning water are removed by the strainer 6.
　つぎに、制御部４は電磁弁７を制御して、洗浄水の供給状態を切り替える。このとき、作用水圧によってオリフィス径が変化するゴム製の可変オリフィスからなる定流量弁９を通過して、人体洗浄水流路２０２内を流れる洗浄水の圧力が減圧される。 Next, the control unit 4 controls the electromagnetic valve 7 to switch the supply state of the cleaning water. At this time, the pressure of the washing water flowing through the human body washing water flow path 202 through the constant flow valve 9 made of a variable orifice made of rubber whose orifice diameter is changed by the working water pressure is reduced.
　つぎに、電磁弁７で制御された洗浄水は、以下で詳細に説明する大気開放部８を経由して、熱交換器１２に供給される。 Next, the washing water controlled by the electromagnetic valve 7 is supplied to the heat exchanger 12 via the atmosphere opening part 8 described in detail below.
　つぎに、熱交換器１２は、人体洗浄水流路２０２内を通して供給される洗浄水を、例えば４０℃などの所定の温度に加熱する。このとき、熱交換器１２と接続される水ポンプ１４は制御部４により駆動制御され、水ポンプ１４の作動速度に応じた流量の洗浄水が人体洗浄ノズルであるおしりノズル１またはビデノズル２から吐出される。そのため、熱交換器１２の加熱動作は、温度センサ１３ａ、１３ｂにより計測された計測温度値および水ポンプ１４によるコントロール流量に基づいて、制御部４により制御される。 Next, the heat exchanger 12 heats the cleaning water supplied through the human body cleaning water flow path 202 to a predetermined temperature such as 40 ° C., for example. At this time, the water pump 14 connected to the heat exchanger 12 is driven and controlled by the control unit 4, and cleaning water having a flow rate corresponding to the operating speed of the water pump 14 is discharged from the butt nozzle 1 or the bidet nozzle 2 which is a human body cleaning nozzle. Is done. Therefore, the heating operation of the heat exchanger 12 is controlled by the control unit 4 based on the measured temperature value measured by the temperature sensors 13 a and 13 b and the control flow rate by the water pump 14.
　つぎに、熱交換器１２により加熱された洗浄水は、水ポンプ１４によりバッファタンク１５を通して切替弁１６に圧送される。そして、切替弁１６は、制御部４により人体洗浄ノズルであるおしりノズル１またはビデノズル２、またはノズル洗浄用ノズル３に切替制御する。また、切替弁１６は、便器のプレ洗浄および便器の後部洗浄などのために、便器ボール表面に吐出する便器ノズル４０に切替制御する。 Next, the wash water heated by the heat exchanger 12 is pumped to the switching valve 16 through the buffer tank 15 by the water pump 14. The switching valve 16 is controlled to be switched to the butt nozzle 1 or the bidet nozzle 2 or the nozzle cleaning nozzle 3 which is a human body cleaning nozzle by the control unit 4. In addition, the switching valve 16 switches and controls the toilet nozzle 40 to be discharged onto the toilet bowl surface for pre-washing the toilet bowl and rear washing of the toilet bowl.
　このとき、バッファタンク１５は、加熱された洗浄水の温度緩衝部として作用する。つまり、切替弁１６に圧送される洗浄水の温度むらの発生を抑制する。なお、熱交換器１２とバッファタンク１５との合計の容量は、１５ｃｃ～３０ｃｃであることが好ましく、２０ｃｃ～２５ｃｃであることがさらに好ましい。例えば、瞬間式の衛生洗浄装置の場合、噴出する流量が５００ｃｃ／ｍｉｎの設定において、熱交換器１２およびバッファタンク１５の容量は応答遅れの要素となる。そのため、熱交換器１２およびバッファタンク１５の容量が２５ｃｃの場合、応答遅れへの影響は、５％（２５／５００）程度で、時間に換算すると約３秒程度の影響となる。しかし、ノズルから吐出する洗浄水の吐出時間は、通常１０秒以内で作動するため、熱交換器などによる応答遅れの時間が３秒以内であれば、充分吸収できるので、容量としては上記の範囲であれば問題ない。 At this time, the buffer tank 15 acts as a temperature buffer for the heated washing water. That is, the occurrence of uneven temperature in the wash water pumped to the switching valve 16 is suppressed. The total capacity of the heat exchanger 12 and the buffer tank 15 is preferably 15 cc to 30 cc, and more preferably 20 cc to 25 cc. For example, in the case of a momentary sanitary washing apparatus, the capacity of the heat exchanger 12 and the buffer tank 15 becomes a factor of response delay when the flow rate to be ejected is set to 500 cc / min. Therefore, when the capacities of the heat exchanger 12 and the buffer tank 15 are 25 cc, the influence on the response delay is about 5% (25/500), which is about 3 seconds when converted into time. However, since the discharge time of the cleaning water discharged from the nozzle normally operates within 10 seconds, if the response delay time by a heat exchanger or the like is within 3 seconds, it can be absorbed sufficiently, so the capacity is in the above range. If so, no problem.
　つぎに、制御部４は切替弁モータ１６ｍの動作を制御し、切替弁１６を、おしりノズル１、ビデノズル２およびノズル洗浄用ノズル３、または便器ノズル４０のいずれかに切り替えて、バッファタンク１５を介して、水ポンプ１４から圧送された洗浄水を供給する。これにより、おしりノズル１、ビデノズル２およびノズル洗浄用ノズル３、便器ノズル４０のいずれかから洗浄水が噴出する。 Next, the control unit 4 controls the operation of the switching valve motor 16m and switches the switching valve 16 to any one of the buttocks nozzle 1, the bidet nozzle 2, the nozzle cleaning nozzle 3, and the toilet nozzle 40, and the buffer tank 15 is switched. Then, the washing water pumped from the water pump 14 is supplied. Accordingly, the washing water is ejected from any one of the butt nozzle 1, the bidet nozzle 2, the nozzle washing nozzle 3, and the toilet nozzle 40.
　なお、おしりノズル１およびビデノズル２は、使用者の局部の洗浄を行うために用いられる。ノズル洗浄用ノズル３は、おしりノズル１およびビデノズル２の、便器７００内に突出する部分を洗浄するために用いられる。さらに、便器ノズル４０は、便器内を洗浄するために用いられる。 Note that the buttocks nozzle 1 and the bidet nozzle 2 are used for cleaning the user's local area. The nozzle cleaning nozzle 3 is used for cleaning portions of the buttocks nozzle 1 and the bidet nozzle 2 that protrude into the toilet bowl 700. Furthermore, the toilet nozzle 40 is used for cleaning the inside of the toilet.
　以下に、本実施の形態の衛生洗浄装置に設けられる人体洗浄ノズルの構成と動作について、図４と図５を用いて説明する。 Hereinafter, the configuration and operation of the human body washing nozzle provided in the sanitary washing apparatus of the present embodiment will be described with reference to FIGS. 4 and 5.
　図４は、同実施の形態に係る衛生洗浄装置の人体洗浄ノズルの要部断面図である。図５は、図４の人体洗浄ノズルにおけるノズル噴出部を拡大した断面図である。 FIG. 4 is a cross-sectional view of the main part of the human body washing nozzle of the sanitary washing device according to the embodiment. FIG. 5 is an enlarged cross-sectional view of a nozzle ejection portion in the human body washing nozzle of FIG.
　図４に示すように、本実施の形態の人体洗浄ノズル１は、モータ駆動機構（図示せず）により、洗浄時には衛生洗浄装置１００の本体部２００内から便器７００内に突出し、洗浄後には後退して本体部２００内に収納するように駆動されるように構成されている。なお、図４は、モータ駆動機構などは省略して、人体洗浄ノズル１の先端部分のみを示している。 As shown in FIG. 4, the human body washing nozzle 1 according to the present embodiment protrudes from the main body 200 of the sanitary washing device 100 into the toilet bowl 700 during washing by a motor drive mechanism (not shown), and retracts after washing. And it is comprised so that it may drive so that it may store in the main-body part 200. FIG. FIG. 4 omits the motor driving mechanism and the like, and shows only the tip portion of the human body washing nozzle 1.
　また、図４に示すように、１つの人体洗浄ノズル１内に、おしりノズル１とビデノズル２を設けて構成されている。 Further, as shown in FIG. 4, a posterior nozzle 1 and a bidet nozzle 2 are provided in one human body washing nozzle 1.
　以下では、本実施の形態のポイントである人体洗浄ノズルのおしりノズル１の構成と動作について、詳細に説明する。 Hereinafter, the configuration and operation of the buttocks nozzle 1 of the human body washing nozzle, which is the point of the present embodiment, will be described in detail.
　図４に示すように、本実施の形態のおしりノズル１は、少なくとも流入路２１と、導入路２２と、吐出口２３を有するノズル噴出部２６と、絞り部２５ａを有する方向転換部２７とから構成されている。 As shown in FIG. 4, the tail nozzle 1 of the present embodiment includes at least an inflow path 21, an introduction path 22, a nozzle ejection section 26 having a discharge port 23, and a direction changing section 27 having a throttle section 25a. It is configured.
　流入路２１は、図３に示す洗浄水供給機構から洗浄水を方向転換部２７に供給する。 The inflow path 21 supplies cleaning water from the cleaning water supply mechanism shown in FIG.
　方向転換部２７は、流入路２１と、流入路２１に対して略直角（直角を含む）方向に配置された導入路２２の一方側と接続するように構成され、洗浄水の流れる方向を転換する。さらに、方向転換部２７の絞り部２５ａは、流入路２１から供給される洗浄水の流路を絞ることにより流速を高めて、導入路２２の内壁面２２ａに洗浄水を衝突させる。 The direction changing portion 27 is configured to connect to the inflow passage 21 and one side of the introduction passage 22 arranged in a substantially right angle (including right angle) direction with respect to the inflow passage 21, and changes the flow direction of the washing water. To do. Further, the restricting portion 25 a of the direction changing portion 27 increases the flow velocity by restricting the flow path of the cleaning water supplied from the inflow path 21, and causes the cleaning water to collide with the inner wall surface 22 a of the introduction path 22.
　導入路２２は、方向転換部２７の絞り部２５ａで流速が高められた洗浄水をノズル噴出部２６に導く。このとき、導入路２２の底部２２ｂは、方向転換部２７の流入路２１の最下部２１ａより低くすることが好ましい。これにより、導入路２２に流入する洗浄水に効果的に乱れを発生させることができる。 The introduction path 22 guides the cleaning water whose flow velocity is increased by the throttle part 25 a of the direction changing part 27 to the nozzle ejection part 26. At this time, the bottom 22 b of the introduction path 22 is preferably lower than the lowermost part 21 a of the inflow path 21 of the direction changing section 27. Thereby, disturbance can be effectively generated in the cleaning water flowing into the introduction path 22.
　ノズル噴出部２６は、導入路２２の他方側と接続される流入部２３ｂと出口部２３ａとを有する吐出口２３から構成されている。そして、図５に示すように、例えば直径３ｍｍの導入路２２から、直径１．３ｍｍの吐出口２３の流入部２３ｂを介して、以下で説明する流路断面が急縮小された急縮小流路を構成している。このとき、ノズル噴出部２６の吐出口２３は、吐出口２３の流入部２３ｂ側から出口部２３ａ側までの吐出口２３の流路長さＬと吐出口２３の直径Ｄとのアスペクト比（Ｌ／Ｄ）が、０．２５から０．７５に、好ましくは０．４から０．７になるように設定して形成されている。 The nozzle ejection part 26 is composed of a discharge port 23 having an inflow part 23b connected to the other side of the introduction path 22 and an outlet part 23a. Then, as shown in FIG. 5, for example, from the introduction path 22 having a diameter of 3 mm, the rapidly reducing flow path in which the flow path cross section described below is rapidly reduced through the inflow portion 23 b of the discharge port 23 having a diameter of 1.3 mm. Is configured. At this time, the discharge port 23 of the nozzle ejection portion 26 has an aspect ratio (L) between the flow path length L of the discharge port 23 from the inflow portion 23b side to the outlet portion 23a side and the diameter D of the discharge port 23. / D) is set to 0.25 to 0.75, preferably 0.4 to 0.7.
　上記により、本実施の形態のおしりノズル１が構成され、洗浄水供給機構からの洗浄水が、流入路２１、方向転換部２７および導入路２２を経て、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出して、人体の局部を洗浄する。 As described above, the bottom nozzle 1 of the present embodiment is configured, and the washing water from the washing water supply mechanism passes through the inflow path 21, the direction changing section 27, and the introduction path 22, and the outlet of the discharge port 23 of the nozzle ejection section 26. It ejects from the part 23a, and the local part of a human body is wash | cleaned.
　つぎに、本実施の形態の人体洗浄ノズルのノズル噴出部において、吐出口の流路長さＬと吐出口の直径Ｄとのアスペクト比（Ｌ／Ｄ）を、０．２５から０．７５に設定することによる作用・効果および設定する理由について、図６から図８を用いて説明する。 Next, in the nozzle ejection portion of the human body washing nozzle of the present embodiment, the aspect ratio (L / D) between the flow path length L of the discharge port and the diameter D of the discharge port is changed from 0.25 to 0.75. The action and effect of setting and the reason for setting will be described with reference to FIGS.
　図６は、同実施の形態に係る衛生洗浄装置の吐出口の半径（Ｄ／２）と流路長さＬとのアスペクト比（Ｌ／Ｄ）が０．５前後の場合の作用・効果を説明する図である。図７は、同実施の形態に係る衛生洗浄装置のノズル噴出部の吐出口のアスペクト比（Ｌ／Ｄ）が１を越える場合の作用・効果を説明する図である。図８は、同実施の形態に係る衛生洗浄装置のノズル噴出部の吐出口のアスペクト比（Ｌ／Ｄ）が０．２５より小さい場合の作用・効果を説明する図である。 FIG. 6 shows the operation and effect when the aspect ratio (L / D) between the discharge port radius (D / 2) and the flow path length L of the sanitary washing device according to the embodiment is about 0.5. It is a figure explaining. FIG. 7 is a diagram for explaining the operation and effect when the aspect ratio (L / D) of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment exceeds 1. FIG. 8 is a diagram for explaining operations and effects when the aspect ratio (L / D) of the discharge port of the nozzle ejection portion of the sanitary washing device according to the embodiment is smaller than 0.25.
　まず、図６に示すように、アスペクト比（Ｌ／Ｄ）が０．５を中心に、０．２５から０．７５の場合、レイノルズ数などによりある程度変化するが、図中の縮流曲線２８で示す吐出口２３の流入部２３ｂの角２３ｃを起点として生ずる洗浄水の縮流した噴流外周の最小径部２８ａ（流速最大部）が、吐出口２３の出口部２３ａの位置と略一致（一致を含む）する。なお、洗浄水の縮流した噴流外周の最小径部２８ａでは、洗浄水の流速は最大となる。これは、導入路２２から吐出口２３に至る部分で流路断面が急縮小され急縮小流路となることに起因するものである。 First, as shown in FIG. 6, when the aspect ratio (L / D) is about 0.25 to 0.75 centering on 0.5, it changes to some extent depending on the Reynolds number, but the contracted flow curve 28 in the figure. The minimum diameter portion 28a (maximum flow velocity portion) of the outer periphery of the jet of compressed cleaning water generated from the corner 23c of the inflow portion 23b of the discharge port 23 is substantially coincident (coincidence) with the position of the outlet portion 23a of the discharge port 23. Including). Note that the flow rate of the cleaning water is maximized at the minimum diameter portion 28a on the outer periphery of the jet of compressed cleaning water. This is due to the fact that the cross section of the flow path is abruptly reduced at the portion from the introduction path 22 to the discharge port 23 to form a rapidly reduced flow path.
　このとき、図６に示すように、吐出口２３の流入部２３ｂから出口部２３ａにかけて形成される洗浄水の縮流部の洗浄水の噴流外周と、吐出口２３の内周壁２３ｄとの間に空間ｓが形成される。そして、ノズル噴出部２６の吐出口２３の出口部２３ａにおいて、洗浄水の噴流外周と吐出口２３の内周壁２３ｄで構成される空間ｓが最大となる。 At this time, as shown in FIG. 6, the cleaning water is formed between the inflow portion 23 b and the outlet portion 23 a of the discharge port 23, between the outer periphery of the cleaning water jet and the inner peripheral wall 23 d of the discharge port 23. A space s is formed. And in the exit part 23a of the discharge outlet 23 of the nozzle ejection part 26, the space s comprised by the jet flow outer periphery and the inner peripheral wall 23d of the discharge outlet 23 becomes the largest.
　なお、縮流部の流線は図６に示すように、縮流開始（角２３ｃ）から吐出口２３の直径（Ｄ）の半分程度の距離で縮流は飽和状態となり、縮流流速が最大となることが知られている。つまり、吐出口２３の直径（Ｄ）の半分程度の位置で、縮流流速と負圧量が最大となる。そのため、吐出口２３の洗浄水の縮流部で発生する洗浄水の負圧部へ流入する空気の開口面積は最大となる。これにより、縮流と吐出口２３の内周壁２３ｄとの間に発生する渦２９の中心までの、吐出口２３の出口部２３ａからの距離が最小になる。その結果、吐出口２３の出口部２３ａの開口から空間ｓに空気が流入しやすくなり、流入した空気は洗浄水の噴流に取り込まれる。 As shown in FIG. 6, the streamline of the contracted portion becomes saturated at a distance of about half the diameter (D) of the discharge port 23 from the contraction start (corner 23c), and the contracted flow velocity is maximum. It is known that That is, the contracted flow velocity and the amount of negative pressure are maximized at a position about half the diameter (D) of the discharge port 23. Therefore, the opening area of the air flowing into the negative pressure portion of the cleaning water generated at the constriction portion of the cleaning water at the discharge port 23 is maximized. This minimizes the distance from the outlet 23a of the discharge port 23 to the center of the vortex 29 generated between the contracted flow and the inner peripheral wall 23d of the discharge port 23. As a result, air easily flows into the space s from the opening of the outlet portion 23a of the discharge port 23, and the inflowed air is taken into the jet of cleaning water.
　そして、洗浄水の噴流中に取り込まれた空気は、噴流の体積を増加させる。これにより、洗浄水の噴流の径は、取り込まれた空気により大きくなる。 And the air taken into the washing water jet increases the volume of the jet. Thereby, the diameter of the jet of washing water becomes larger by the taken-in air.
　このとき、本実施の形態では、ノズル噴出部２６の吐出口２３の出口部２３ａにおいて、洗浄水の噴流外周と吐出口２３の内周壁２３ｄとで構成される空間ｓが最大となるように、所定のアスペクト比でノズル噴出部２６を構成している。そのため、洗浄水の噴流外周は、空間ｓに広がることができるとともに、空気を噴流中に取り込むことができる。これにより、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、洗浄水を強い洗浄感が得られる大きさの水塊に分断して、ノズル噴出部２６の吐出口２３の出口部２３ａから洗浄水を噴出できる。このとき、分断された水塊により、洗浄水の脈動噴流による被洗浄部に衝突する噴流の荷重変動幅が大きくなる。その結果、人体洗浄ノズルからの噴出する洗浄水が少流量でも、高い洗浄効果と優れた洗浄感が得られる衛生洗浄装置を実現できる。 At this time, in the present embodiment, in the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26, the space s formed by the outer periphery of the jet of cleaning water and the inner peripheral wall 23d of the discharge port 23 is maximized. The nozzle ejection portion 26 is configured with a predetermined aspect ratio. Therefore, the outer periphery of the washing water jet can be expanded into the space s, and air can be taken into the jet. Thereby, even when the jet of washing water from the human body washing nozzle has a small flow rate, the washing water is divided into water bodies having a size that provides a strong feeling of washing, and the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26 is obtained. Wash water can be spouted from. At this time, due to the divided water mass, the load fluctuation width of the jet colliding with the portion to be cleaned due to the pulsating jet of the cleaning water increases. As a result, it is possible to realize a sanitary washing apparatus that can provide a high washing effect and an excellent washing feeling even when the washing water ejected from the human body washing nozzle is small in flow rate.
　また、図６に示すように、洗浄水の縮流した噴流外周と、ノズル噴出部２６の吐出口２３の内周壁２３ｄとで形成される空間ｓには、縮流した噴流から分離された洗浄水と、空間ｓに外部から取り込まれた空気により渦２９が発生する。そして、発生した渦２９による低圧部に、さらに空気が取り込まれて、洗浄水と混合する。このとき、洗浄水と空気との混合現象は一様に行われないので、空気と水が混合された塊が、脈動して、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出する。これにより、さらに洗浄水を強い洗浄感が得られる大きさの水塊に分断することができる。 In addition, as shown in FIG. 6, the space s formed by the outer periphery of the jet of the washing water contracted and the inner peripheral wall 23 d of the discharge port 23 of the nozzle ejection section 26 is washed away from the jet of the contracted current. A vortex 29 is generated by water and air taken from the outside into the space s. And air is further taken in into the low pressure part by the generated vortex 29 and mixed with the washing water. At this time, since the mixing phenomenon of the cleaning water and air is not performed uniformly, the lump in which the air and water are mixed pulsates and is ejected from the outlet portion 23 a of the discharge port 23 of the nozzle ejection portion 26. Thereby, the washing water can be further divided into water bodies having a size that provides a strong feeling of washing.
　また、特に、ノズル噴出部２６の吐出口２３に流入する洗浄水の流速が、例えば１３．５ｍ／ｓｅｃと十分に速い場合は、上記渦２９や、吐出口２３の流入部２３ｂの角２３ｃを起点としてキャビテーションなどが発生する。これにより、さらに大きな脈動を、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出する洗浄水に付与することができる。その結果、より高い洗浄効果と、さらに優れた洗浄感が得られる衛生洗浄装置を実現できる。 In particular, when the flow rate of the washing water flowing into the discharge port 23 of the nozzle ejection part 26 is sufficiently fast, for example, 13.5 m / sec, the vortex 29 and the corner 23c of the inflow part 23b of the discharge port 23 are set. Cavitation occurs as a starting point. As a result, a larger pulsation can be imparted to the wash water ejected from the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26. As a result, it is possible to realize a sanitary washing apparatus that can obtain a higher washing effect and a better washing feeling.
　一方、図７に示すように、ノズル噴出部２６の吐出口２３のアスペクト比（Ｌ／Ｄ）を１以上でノズル噴出部２６を構成した場合、吐出口２３の流入部２３ｂで縮流した洗浄水の流れは、アスペクト比（Ｌ／Ｄ）が１前後で、吐出口２３の内周壁２３ｄに再付着した流れとなる。また、アスペクト比（Ｌ／Ｄ）が１より大きくなっても、洗浄水が吐出口２３の内周壁２３ｄに再付着した状態が継続される。 On the other hand, as shown in FIG. 7, when the nozzle ejection section 26 is configured with an aspect ratio (L / D) of the ejection opening 23 of the nozzle ejection section 26 being 1 or more, the cleaning is performed by the inflow section 23 b of the ejection opening 23. The flow of water has an aspect ratio (L / D) of around 1, and is reattached to the inner peripheral wall 23d of the discharge port 23. Even when the aspect ratio (L / D) is greater than 1, the state where the cleaning water is reattached to the inner peripheral wall 23d of the discharge port 23 is continued.
　このとき、通常の燃料噴射弁で使用されている、例えば燃料の流速が数１０ｍ／ｓｅｃ以上の場合、ノズル噴出部２６の吐出口２３で大きな負圧が発生してキャビテーションが発生する。そのため、ノズル噴出部２６の吐出口２３内で、燃料である流体と、負圧により発生する燃料の蒸気が激しく混合して、流体が細かな液滴に分散し噴出することができる。 At this time, when the fuel is used in a normal fuel injection valve, for example, when the flow rate of the fuel is several tens of m / sec or more, a large negative pressure is generated at the discharge port 23 of the nozzle ejection portion 26 and cavitation occurs. Therefore, the fluid as the fuel and the fuel vapor generated by the negative pressure are vigorously mixed in the discharge port 23 of the nozzle ejection portion 26, and the fluid can be dispersed and ejected into fine droplets.
　しかし、本実施の形態の衛生洗浄装置では、洗浄水の流速は１０ｍ／ｓｅｃ前後である。そのため、ノズル噴出部２６の吐出口２３の内周壁２３ｄに再付着した洗浄水の流れは、脈動が抑えられて安定した流れとなる。その結果、洗浄水の噴流の脈動効果が抑制されるため、アスペクト比（Ｌ／Ｄ）が１を超えるノズル噴出部２６は、本実施の形態の衛生洗浄装置の人体洗浄ノズルには適さない。さらに、アスペクト比（Ｌ／Ｄ）が０．７５を超えるノズル噴出部２６の場合においても、洗浄水の噴流外周が大きくなるため、流速が小さくなる。また、空間ｓの開口面積が小さくなるため、取り込まれる空気の量も少なくなる。そのため、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出する洗浄水の脈動圧の低下や、揺動性が低下し、洗浄効果や洗浄感が低下する。その結果、ノズル噴出部２６の吐出口２３のアスペクト比（Ｌ／Ｄ）を０．７５、より好ましくは０．７以下にすることが好ましい。 However, in the sanitary washing device of the present embodiment, the flow rate of the washing water is around 10 m / sec. Therefore, the flow of the cleaning water that has reattached to the inner peripheral wall 23d of the discharge port 23 of the nozzle ejection portion 26 becomes a stable flow with reduced pulsation. As a result, since the pulsation effect of the washing water jet is suppressed, the nozzle ejection portion 26 having an aspect ratio (L / D) exceeding 1 is not suitable for the human body washing nozzle of the sanitary washing apparatus of the present embodiment. Further, even in the case of the nozzle ejection portion 26 having an aspect ratio (L / D) exceeding 0.75, the outer periphery of the washing water jet becomes larger, and thus the flow velocity becomes smaller. Further, since the opening area of the space s is reduced, the amount of air taken in is also reduced. For this reason, the pulsation pressure of the washing water ejected from the outlet 23a of the discharge port 23 of the nozzle ejection part 26 and the oscillating property are lowered, and the washing effect and the washing feeling are lowered. As a result, it is preferable that the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection section 26 is 0.75, more preferably 0.7 or less.
　また、図８に示すように、ノズル噴出部２６の吐出口２３のアスペクト比（Ｌ／Ｄ）を０．２５より小さいノズル噴出部２６で構成した場合、吐出口２３の流入部２３ｂで縮流した洗浄水の流れは、縮流していく途中の状態で吐出口２３の出口部２３ａから噴出する。そのため、吐出口２３の出口部２３ａから噴出された後も、ある程度の距離まで、洗浄水の噴流が中心に集まり、噴流外周の径は小さくなるように縮流する。これにより、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出する洗浄水は、基本的に安定した挙動を示す。 As shown in FIG. 8, when the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection portion 26 is configured by the nozzle ejection portion 26 smaller than 0.25, the flow is reduced at the inflow portion 23b of the discharge port 23. The flow of the washed water is ejected from the outlet portion 23a of the discharge port 23 in a state of being contracted. Therefore, even after being ejected from the outlet portion 23a of the discharge port 23, the jet of cleaning water gathers at the center to a certain distance, and contracts so that the diameter of the outer periphery of the jet becomes small. Thereby, the wash water ejected from the outlet part 23a of the discharge port 23 of the nozzle ejection part 26 basically exhibits a stable behavior.
　しかし、洗浄水が、吐出口２３の流入部２３ｂから縮流を開始し、出口部２３ａから噴出するまでの流路長さＬ（距離）が短い。そのため、吐出口２３の流入部２３ｂの角２３ｃで剥離した洗浄水の流れによる、空間ｓに発生する渦２９が小さくなる。その結果、吐出口２３で形成される縮流部での負圧発生の減圧量は小さくなるため、キャビテーションも発生しにくい。 However, the flow path length L (distance) from when the cleaning water starts to contract from the inflow portion 23b of the discharge port 23 and ejects from the outlet portion 23a is short. Therefore, the vortex 29 generated in the space s due to the flow of the cleaning water separated at the corner 23c of the inflow portion 23b of the discharge port 23 is reduced. As a result, since the amount of reduced pressure generated by the negative pressure at the contracted portion formed by the discharge port 23 is reduced, cavitation is less likely to occur.
　さらに、ノズル噴出部２６の吐出口２３の出口部２３ａまでの空気の通路は、洗浄水が縮流を開始してからの距離が小さいため、狭くなる。その結果、空間ｓに取り込まれる空気の流入量も少なくなる。 Further, the air passage to the outlet 23a of the discharge port 23 of the nozzle ejection part 26 is narrow because the distance from the start of the contraction of the cleaning water is small. As a result, the inflow amount of air taken into the space s is also reduced.
　つまり、ノズル噴出部２６の吐出口２３のアスペクト比（Ｌ／Ｄ）が０．２５より小さい場合、洗浄水の噴流が、脈動を発生しにくい状態となる。そのため、噴流の脈動効果が低く、本実施の形態の衛生洗浄装置の人体洗浄ノズルには適さない。 That is, when the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection section 26 is smaller than 0.25, the washing water jet is less likely to generate pulsation. Therefore, the pulsation effect of the jet is low, and it is not suitable for the human body washing nozzle of the sanitary washing device of the present embodiment.
　以下に、上記で説明した、ノズル噴出部の吐出口の流路長さＬと吐出口の直径Ｄとのアスペクト比（Ｌ／Ｄ）を変化させた場合の洗浄効果と洗浄感に影響を与える洗浄水の噴流の荷重変動幅について、図９を用いて説明する。 In the following, the cleaning effect and the cleaning feeling when the aspect ratio (L / D) between the flow path length L of the discharge port of the nozzle ejection part and the diameter D of the discharge port described above are changed will be affected. The load fluctuation range of the washing water jet will be described with reference to FIG.
　図９は、同実施の形態に係る衛生洗浄装置の人体洗浄ノズルにおけるアスペクト比（Ｌ／Ｄ）と噴流の荷重変動幅との関係を示すグラフである。なお、図中には、実測値（黒四角点）とその平均値（実線）を示している。 FIG. 9 is a graph showing the relationship between the aspect ratio (L / D) and the load fluctuation width of the jet in the human body washing nozzle of the sanitary washing device according to the embodiment. In the figure, actual measurement values (black square points) and average values thereof (solid lines) are shown.
　図９に示すように、アスペクト比（Ｌ／Ｄ）が０．５の近傍で荷重変動幅が最大で、アスペクト比（Ｌ／Ｄ）が０．２５から０．７５までの間において脈動効果が得られることがわかる。特に、アスペクト比（Ｌ／Ｄ）が０．４から０．７において、例えば４ｇｗ以上の高い荷重変動幅が得られることがわかる。なお、アスペクト比（Ｌ／Ｄ）が０．７５以上でも、大きな荷重変動幅が得られるが、上述したように、洗浄水の縮流量が少なく、流速が低下するため、洗浄効果や洗浄感が低下する。また、洗浄水の噴流外周が大きくなるため、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出する洗浄水の揺動性が低下する。そのため、アスペクト比（Ｌ／Ｄ）が０．７５以上のノズル噴出部２６の構成は好ましくない。 As shown in FIG. 9, the load fluctuation range is maximum when the aspect ratio (L / D) is near 0.5, and the pulsation effect is observed when the aspect ratio (L / D) is between 0.25 and 0.75. It turns out that it is obtained. In particular, it can be seen that when the aspect ratio (L / D) is 0.4 to 0.7, a high load fluctuation range of, for example, 4 gw or more can be obtained. Even if the aspect ratio (L / D) is 0.75 or more, a large load fluctuation range can be obtained. However, as described above, since the flow rate of the cleaning water is small and the flow rate is low, the cleaning effect and the cleaning feeling are improved. descend. Further, since the outer periphery of the washing water jet becomes large, the oscillating property of the washing water ejected from the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26 is reduced. Therefore, the configuration of the nozzle ejection portion 26 having an aspect ratio (L / D) of 0.75 or more is not preferable.
　つぎに、上記で説明した、本実施の形態のノズル噴出部の吐出口の流路長さＬと吐出口の直径Ｄとのアスペクト比（Ｌ／Ｄ）において、脈動が発生する洗浄水の流量について、図１０を用いて説明する。 Next, in the aspect ratio (L / D) between the flow path length L of the discharge port of the nozzle ejection portion of the present embodiment and the diameter D of the discharge port described above, the flow rate of the cleaning water that generates pulsation Will be described with reference to FIG.
　図１０は、同実施の形態に係る衛生洗浄装置の人体洗浄ノズルの所定のアスペクト比Ｌ／Ｄに対する洗浄水の流量と圧力損失との関係を示す図である。なお、図１０は、人体洗浄ノズルのアスペクト比（Ｌ／Ｄ）を、０．５に設定した場合を例に示している。また、図中の実線は、本実施の形態の噴出する洗浄水の流量と圧力損失との検討結果を示している。一方、図中の破線は、噴出する洗浄水に脈動や分断が発生しない状態における流量と圧力損失との関係を示している。 FIG. 10 is a diagram showing the relationship between the flow rate of cleaning water and the pressure loss with respect to a predetermined aspect ratio L / D of the human body washing nozzle of the sanitary washing device according to the embodiment. FIG. 10 shows an example in which the aspect ratio (L / D) of the human body washing nozzle is set to 0.5. Moreover, the solid line in a figure has shown the examination result of the flow volume and pressure loss of the wash water which ejects of this Embodiment. On the other hand, the broken line in the figure shows the relationship between the flow rate and the pressure loss in a state where no pulsation or separation occurs in the jetted washing water.
　図１０に示すように、人体洗浄ノズルのノズル噴出部から噴出する洗浄水の流速が５．２ｍ／ｓｅｃを超えると、圧力損失が少し増える傾向にあることがわかる。このとき、噴出する洗浄水の噴流を観察すると、上記の流速前後から噴流がやや白くなり、洗浄水の噴流中に空気の取り込みが始まることがわかる。 As shown in FIG. 10, it can be seen that the pressure loss tends to increase slightly when the flow rate of the cleaning water ejected from the nozzle ejection portion of the human body washing nozzle exceeds 5.2 m / sec. At this time, observing the jet of washing water that is ejected, it can be seen that the jet becomes slightly white from before and after the above-mentioned flow velocity, and that air starts to be taken into the jet of washing water.
　さらに、洗浄水の流速が増加するにしたがって、空気がさらに噴流中に取り込まれ噴流外周の径が大きくなる。そして、洗浄水の流速が７ｍ／ｓｅｃを超えると、空気を取り込んだ水塊が吐出口２３の出口部２３ａから分断して飛び出す。その結果、噴流の分断化による脈動が促進される。 Furthermore, as the washing water flow rate increases, air is further taken into the jet and the outer diameter of the jet increases. When the flow rate of the washing water exceeds 7 m / sec, the water mass that has taken in the air is divided from the outlet 23a of the discharge port 23 and jumps out. As a result, pulsation due to the division of the jet is promoted.
　つまり、本実施の形態の人体洗浄ノズルのアスペクト比（Ｌ／Ｄ）を、例えば０．２５から０．７５の所定の範囲に設定することにより、洗浄水の流量が０．６Ｌ／ｍｉｎでも充分に分断され、脈動状態で洗浄水を噴出できることがわかる。 That is, by setting the aspect ratio (L / D) of the human body cleaning nozzle of the present embodiment to a predetermined range of, for example, 0.25 to 0.75, the flow rate of cleaning water is sufficient even at 0.6 L / min. It can be seen that the wash water can be ejected in a pulsating state.
　以上で説明したように、本実施の形態の衛生洗浄装置のノズル噴出部２６の吐出口２３のアスペクト比（Ｌ／Ｄ）は、０．２５から０．７５の範囲に設定することが好ましい。さらに、図９を用いて説明したように、特に、ノズル噴出部２６の吐出口２３のアスペクト比（Ｌ／Ｄ）を０．４から０．７の範囲で設定することがより好ましい。これにより、少ない流量でも、洗浄水の脈動の荷重変動幅が大きくできるため、より高い洗浄効果と、さらに優れた洗浄感が得られる。 As described above, the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection section 26 of the sanitary washing device of the present embodiment is preferably set in the range of 0.25 to 0.75. Furthermore, as described with reference to FIG. 9, it is more preferable to set the aspect ratio (L / D) of the discharge port 23 of the nozzle ejection portion 26 in the range of 0.4 to 0.7. As a result, even if the flow rate is small, the load fluctuation range of the pulsation of the cleaning water can be increased, so that a higher cleaning effect and a better cleaning feeling can be obtained.
　また、図６を用いて説明したように、ノズル噴出部２６の吐出口２３の流入部２３ｂの角２３ｃは、ノズル噴出部２６に流入する洗浄水を縮流させて吐出口２３の内周壁２３ｄから流れを剥離させる。そのため、後流で発生する渦２９の生成により洗浄水の噴流を脈動化させる上で重要である。そこで、本実施の形態では、角２３ｃの角度θは、吐出口２３の内周壁２３ｄから流入部２３ｂへ外方に向かって、略直角（直角を含む）に設ける。このとき、一般的に、角２３ｃには、加工などによりＲ形状が付きやすく、Ｒ形状は洗浄水の流れの剥離に影響を与える。そこで、本実施の形態では、吐出口２３の直径Ｄが、例えば１ｍｍの場合、角２３ｃのＲ形状を曲率半径が０．１ｍｍ以下となるように形成している。これにより、ノズル噴出部２６の吐出口２３の流入部２３ｂの角２３ｃで、洗浄水の流れを効果的に吐出口２３の内周壁２３ｄから分離することができる。そして、吐出口２３の内周壁２３ｄを流れる洗浄水の噴流に空気が混入され、洗浄水の噴流が分断されやすくなる。その結果、人体洗浄ノズルから噴出する洗浄水に、効果的に脈動効果を付与できる。 In addition, as described with reference to FIG. 6, the corner 23 c of the inflow portion 23 b of the discharge port 23 of the nozzle ejection portion 26 causes the cleaning water flowing into the nozzle ejection portion 26 to flow down and the inner peripheral wall 23 d of the discharge port 23. Separate the flow from. Therefore, it is important to pulsate the jet of washing water by generating the vortex 29 generated in the wake. Therefore, in the present embodiment, the angle θ of the corner 23c is provided at a substantially right angle (including a right angle) from the inner peripheral wall 23d of the discharge port 23 toward the inflow portion 23b. At this time, generally, the corner 23c is likely to have an R shape by processing or the like, and the R shape affects the separation of the flow of the cleaning water. Therefore, in this embodiment, when the diameter D of the discharge port 23 is 1 mm, for example, the R shape of the corner 23c is formed so that the radius of curvature is 0.1 mm or less. Accordingly, the flow of the cleaning water can be effectively separated from the inner peripheral wall 23d of the discharge port 23 at the corner 23c of the inflow portion 23b of the discharge port 23 of the nozzle ejection portion 26. Then, air is mixed in the jet of cleaning water flowing through the inner peripheral wall 23d of the discharge port 23, and the jet of cleaning water is easily divided. As a result, the pulsation effect can be effectively imparted to the cleaning water ejected from the human body cleaning nozzle.
　なお、本実施の形態では、ノズル噴出部２６の吐出口２３の流入部２３ｂの角２３ｃを略直角で形成した例で説明したが、これに限られない。例えば、図１１に示すように、吐出口２３の内周壁２３ｄから流入部２３ｂへ外方に向かう角２３ｃの角度θ（すなわち内周壁２３ｄと流入部２３ｂとがなす角２３ｃの角度θ）を、鋭角で形成してもよい。これにより、吐出口２３を、例えば樹脂成形品で形成する場合でも、吐出口２３の流入部２３ｂと内周壁２３ｄとの角２３ｃで、より確実に洗浄水の流れを、吐出口２３の内周壁２３ｄから剥離させることができる。また、吐出口２３の内周壁２３ｄに沿って形成される洗浄水の縮流部で発生する負圧部へ流入する空気の開口面積（空間ｓ）を最大にして、空気を流入しやすくできる。そのため、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、洗浄水の噴流を強い洗浄感が得られる大きさの水塊に分断して、脈動効果を高めることができる。その結果、洗浄水が少流量でも、より高い洗浄効果とより優れた洗浄感を実現できる。 In the present embodiment, the example in which the corner 23c of the inflow portion 23b of the discharge port 23 of the nozzle ejection portion 26 is formed at a substantially right angle has been described, but the present invention is not limited to this. For example, as shown in FIG. 11, an angle θ of an angle 23c going outward from the inner peripheral wall 23d of the discharge port 23 to the inflow portion 23b (that is, an angle θ of an angle 23c formed by the inner peripheral wall 23d and the inflow portion 23b) You may form at an acute angle. Thereby, even when the discharge port 23 is formed of, for example, a resin molded product, the flow of the cleaning water is more surely flowed at the corner 23c between the inflow portion 23b of the discharge port 23 and the inner peripheral wall 23d. 23d can be peeled off. In addition, it is possible to maximize the opening area (space s) of the air flowing into the negative pressure portion generated at the constricted flow portion of the washing water formed along the inner peripheral wall 23d of the discharge port 23, thereby facilitating the inflow of air. Therefore, even when the jet of cleaning water from the human body cleaning nozzle has a small flow rate, the jet of cleaning water can be divided into water blocks of a size that provides a strong feeling of cleaning, and the pulsation effect can be enhanced. As a result, a higher cleaning effect and a better cleaning feeling can be realized even with a small flow of cleaning water.
　また、本実施の形態では、ノズル噴出部２６の吐出口２３の流入部２３ｂに角２３ｃを形成した例で説明したが、これに限られない。例えば、ノズル噴出部２６の吐出口２３の内周壁２３ｄに沿って、流入部２３ｂから導入路２２に向かって、バリなどによる突出部を設けてもよい。このとき、バリなどの突出部は、ノズル噴出部２６の吐出口２３を、例えばステンレスなどの板金の打ち抜き加工や、樹脂の成形加工することにより形成できる。そして、ノズル噴出部２６の吐出口２３の流入部２３ｂの角２３ｃに形成したバリにより、洗浄水の噴流が流入する流入部２３ｂに、より鋭角で鋭利なエッジを設けることができる。これにより、バリのエッジ部分で、より確実に、洗浄水の流れを、吐出口２３の内周壁２３ｄから剥離させることができる。また、吐出口２３の内周壁２３ｄに沿って形成される洗浄水の縮流部で発生する負圧部へ流入する空気の開口面積（空間ｓ）を最大にして、さらに空気が流入しやすくできる。そのため、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、洗浄水の噴流を強い洗浄感が得られる大きさの水塊に分断して、脈動効果を高めることができる。その結果、洗浄水が少流量でも、より高い洗浄効果とより優れた洗浄感を付与できる。 In the present embodiment, the example in which the corner 23c is formed in the inflow portion 23b of the discharge port 23 of the nozzle ejection portion 26 has been described, but the present invention is not limited thereto. For example, a protruding portion such as a burr may be provided from the inflow portion 23b toward the introduction path 22 along the inner peripheral wall 23d of the discharge port 23 of the nozzle ejection portion 26. At this time, protrusions such as burrs can be formed by punching the discharge port 23 of the nozzle ejection portion 26, for example, by punching a sheet metal such as stainless steel, or molding the resin. And the burr | flash formed in the corner | angular 23c of the inflow part 23b of the discharge outlet 23 of the nozzle ejection part 26 can provide a sharper and sharper edge in the inflow part 23b into which the jet of washing water flows. Thereby, the flow of cleaning water can be more reliably separated from the inner peripheral wall 23d of the discharge port 23 at the edge portion of the burr. Further, the opening area (space s) of the air flowing into the negative pressure portion generated at the constricted flow portion of the cleaning water formed along the inner peripheral wall 23d of the discharge port 23 can be maximized to further facilitate the inflow of air. . Therefore, even when the jet of cleaning water from the human body cleaning nozzle has a small flow rate, the jet of cleaning water can be divided into water blocks of a size that provides a strong feeling of cleaning, and the pulsation effect can be enhanced. As a result, even with a small amount of cleaning water, a higher cleaning effect and a better cleaning feeling can be imparted.
　（実施の形態２）
　以下、本発明の実施の形態２における衛生洗浄装置の人体洗浄ノズルについて、図１２を用いて説明する。 (Embodiment 2)
Hereinafter, the human body washing nozzle of the sanitary washing device in Embodiment 2 of the present invention will be described with reference to FIG.
　図１２は、本発明の実施の形態２に係る衛生洗浄装置の人体洗浄ノズルの縦断面図である。 FIG. 12 is a longitudinal sectional view of a human body cleaning nozzle of a sanitary cleaning device according to Embodiment 2 of the present invention.
　図１２に示すように、本実施の形態は、人体洗浄ノズルの方向転換部２７を構成する導入路２２の底部２２ｂに、ノズル噴出部２６に向かって乱れ発生部２５を設けた点で、実施の形態１の衛生洗浄装置の人体洗浄ノズルとは異なる。なお、乱れ発生部２５は、方向転換部２７の近傍、あるいは導入路２２の方向転換部２７側に設けることが好ましい。また、他の構成や、作用・効果は、実施の形態１の衛生洗浄装置と同じであるので、詳細な説明は省略する。 As shown in FIG. 12, the present embodiment is implemented in that a turbulence generating portion 25 is provided toward the nozzle ejection portion 26 at the bottom portion 22b of the introduction path 22 constituting the direction changing portion 27 of the human body washing nozzle. It differs from the human body washing nozzle of the sanitary washing device of form 1. The turbulence generating unit 25 is preferably provided in the vicinity of the direction changing unit 27 or on the direction changing unit 27 side of the introduction path 22. Further, since other configurations, operations and effects are the same as those of the sanitary washing apparatus of the first embodiment, detailed description thereof is omitted.
　つまり、図１２に示すように、本実施の形態の乱れ発生部２５は、例えば角柱形状の突起で、導入路２２の底部２２ｂからノズル噴出部２６に向かって立設して設けられている。このとき、一例として、導入路２２の直径が３ｍｍの場合、乱れ発生部２５を構成する角柱形状の突起２５ｃは、例えば幅２ｍｍ（洗浄水の流入する方向と直交する方向）で、厚み１ｍｍ（洗浄水の流入する方向）で形成される。また、乱れ発生部２５を構成する角柱形状の突起の高さ（ノズル噴出部２６に向かう方向）は、突起２５ｃの上面２５ｃ１が方向転換部２７を構成する流入路２１の最下部２１ａから流入路２１と絞り部２５ａの最下部との間隔の２倍の範囲内で、ノズル噴出部２６に向かって設ける。 That is, as shown in FIG. 12, the turbulence generation unit 25 of the present embodiment is, for example, a prismatic protrusion, and is provided upright from the bottom 22 b of the introduction path 22 toward the nozzle ejection unit 26. At this time, as an example, when the diameter of the introduction path 22 is 3 mm, the prismatic protrusion 25c constituting the turbulence generating unit 25 has, for example, a width of 2 mm (a direction orthogonal to the direction in which the cleaning water flows) and a thickness of 1 mm ( Formed in the direction in which the washing water flows. Further, the height of the prismatic protrusions constituting the turbulence generating part 25 (the direction toward the nozzle ejection part 26) is such that the upper surface 25c1 of the protrusions 25c extends from the lowermost part 21a of the inflow path 21 constituting the direction changing part 27. The nozzle 21 is provided toward the nozzle ejection portion 26 within a range twice as large as the distance between the nozzle 21 and the lowermost portion of the throttle portion 25a.
　これにより、方向転換部２７を構成する絞り部２５ａで流速が高められた洗浄水は、導入路２２内に設けられた乱れ発生部２５を構成する突起２５ｃと衝突する。さらに、衝突した洗浄水は、突起２５ｃの背面側に回り込むなどにより、さらに激しく乱される。そして、乱された洗浄水は、急縮小流路を形成するノズル噴出部２６から、より効果的に分断された状態で噴出する。その結果、さらに、洗浄水の噴流の脈動効果を高めて、洗浄水の噴流が少流量の場合でも、より高い洗浄効果とより優れた洗浄感が得られる。 Thereby, the cleaning water whose flow velocity is increased by the throttle portion 25a constituting the direction changing portion 27 collides with the protrusion 25c constituting the turbulence generating portion 25 provided in the introduction path 22. Furthermore, the collided cleaning water is further disturbed more violently by going around to the back side of the protrusion 25c. Then, the disturbed washing water is ejected in a state where it is more effectively divided from the nozzle ejection portion 26 that forms the rapidly reducing flow path. As a result, the pulsation effect of the jet of cleaning water is further increased, and even when the jet of cleaning water has a small flow rate, a higher cleaning effect and a better feeling of cleaning can be obtained.
　以下に、上記に示す乱れ発生部２５を設けた場合の作用・効果について、図１３を用いて説明する。 Hereinafter, operations and effects when the above-described turbulence generating unit 25 is provided will be described with reference to FIG.
　図１３は、図１２の人体洗浄ノズルにおける噴流の荷重変動幅を示すグラフである。なお、図１３は、比較のために、絞り部と乱れ発生部を設けず、急縮小流路を形成するノズル噴出部２６のみを有する人体洗浄ノズルの場合の噴流の荷重変動幅も、同時に図示している。 FIG. 13 is a graph showing the load fluctuation width of the jet in the human body washing nozzle of FIG. For comparison, FIG. 13 also shows the load fluctuation range of the jet flow in the case of a human body washing nozzle having only the nozzle ejection portion 26 that forms the rapidly reducing flow path without providing the throttle portion and the turbulence generation portion. Show.
　図１３に示すように、まず、絞り部２５ａにより、流量が増加すると流速も増加する。このとき、さらに乱れ発生部２５を設けると、噴流の荷重変動幅の振れ幅が流量の増加にともなって大きくなる。そのため、流量が多く流速の速い洗浄水の噴流は、荷重変動幅が大きくできるため、好ましい洗浄水の噴流を実現できる。 As shown in FIG. 13, first, the flow rate increases as the flow rate increases due to the throttle portion 25a. At this time, if the turbulence generation unit 25 is further provided, the fluctuation width of the load fluctuation width of the jet increases as the flow rate increases. For this reason, a jet of washing water having a high flow rate and a high flow velocity can have a large load fluctuation range, so that a preferable jet of washing water can be realized.
　つまり、例え、使用者が設定する弱水流、すなわち流量が最小で流速が小さくなる条件に設定しても、まず、絞り部２５ａにより、洗浄水の流速をできるだけ速くできる。さらに、流速を高めた洗浄水を乱れ発生部２５にぶつけて、渦流などの乱れを発生させることにより、噴流の荷重変動幅の振れ幅が大きい脈動噴流を発生することができる。 That is, for example, even if the weak water flow set by the user, that is, the flow rate is set to the minimum and the flow rate is reduced, the flow rate of the cleaning water can be made as fast as possible by the throttle portion 25a. Furthermore, a pulsating jet flow with a large fluctuation width of the load variation width of the jet flow can be generated by causing the turbulence generating unit 25 to hit the washing water with an increased flow velocity to generate a turbulence such as a vortex flow.
　一方、図１３に示すように、絞り部と乱れ発生部を設けず、急縮小ノズルを構成するノズル噴出口だけの場合でも、洗浄水の流量が多く流速が速ければ、急縮小部で発生するキャビテーションにより、脈動の大きな噴流を発生させることはできる。つまり、図１３に示す流量が０．７Ｌ／ｍｉｎを超えると、噴流の荷重変動幅が大きくなることがわかる。したがって、急縮小ノズルを構成するノズル噴出口の構成のみでも、流量を多くすれば、荷重変動幅の大きな洗浄水の噴流を得ることが可能となることがわかる。 On the other hand, as shown in FIG. 13, even when only the nozzle outlet constituting the sudden reduction nozzle is not provided with the throttle part and the turbulence generation part, if the flow rate of the washing water is large and the flow velocity is high, it is generated in the rapid reduction part A pulsating jet can be generated by cavitation. That is, it can be seen that when the flow rate shown in FIG. 13 exceeds 0.7 L / min, the load fluctuation width of the jet increases. Therefore, it can be seen that even with only the configuration of the nozzle outlet constituting the rapidly reducing nozzle, it is possible to obtain a jet of washing water having a large load fluctuation range by increasing the flow rate.
　しかし、流量が０．６Ｌ／ｍｉｎ以下の小流量で、荷重変動幅の大きな洗浄水の噴流を実現することは困難である。 However, it is difficult to realize a washing water jet with a large load fluctuation range at a small flow rate of 0.6 L / min or less.
　以上で説明したように、本実施の形態によれば、方向転換部２７に乱れ発生部（図１３の突起２５ｃ）を設けた場合、絞り部と乱れ発生部を設けない場合と比較して、洗浄水の流量が増加するにしたがって、噴流の荷重変動幅を大きくできる。さらに、洗浄水の流量が、０．６Ｌ／ｍｉｎ以下でも高い荷重変動幅が得られることがわかる。これにより、洗浄水が少流量でも、洗浄水の噴流の脈動効果を高め、より高い洗浄効果とより優れた洗浄感を得ることができる。 As described above, according to the present embodiment, when the turbulence generating portion (protrusion 25c in FIG. 13) is provided in the direction changing portion 27, compared to the case where the throttle portion and the turbulence generating portion are not provided, As the flow rate of the washing water increases, the load fluctuation range of the jet can be increased. Furthermore, it can be seen that a high load fluctuation range can be obtained even when the flow rate of the cleaning water is 0.6 L / min or less. Thereby, even if the washing water has a small flow rate, the pulsation effect of the jet of washing water can be enhanced, and a higher washing effect and a better feeling of washing can be obtained.
　なお、本実施の形態では、乱れ発生部２５を構成する突起２５ｃの上面が同じ高さである場合を例に説明したが、これに限られない。例えば、突起２５ｃの上面２５ｃ１は、絞り部２５ａ側から離れるにしたがって下方側（導入路２２の底部２２ｂ側）に傾斜させて設けてもよい。これにより、突起２５ｃに衝突した洗浄水を効果的に乱れさせることができる。 In the present embodiment, the case where the upper surfaces of the protrusions 25c constituting the turbulence generating unit 25 have the same height has been described as an example, but the present invention is not limited to this. For example, the upper surface 25c1 of the protrusion 25c may be provided so as to be inclined downward (to the bottom 22b side of the introduction path 22) as the distance from the throttle portion 25a side increases. Thereby, the washing water colliding with the protrusion 25c can be effectively disturbed.
　また、本実施の形態では、方向転換部２７を構成する導入路２２に乱れ発生部２５を構成する突起２５ｃを設けた例で説明したが、これに限られない。例えば、図１４に示すように、絞り部２５ａの上流に、突起２５ｂを設ける構成でもよい。これにより、上記乱れ発生部を設けずに、簡単な構成で、絞り部に流入する洗浄水の流速を速めることができる。その結果、ノズル噴出部２６の吐出口２３の出口部２３ａから噴出する洗浄水の噴流の脈動効果を高めることができる。 In the present embodiment, the example in which the protrusion 25c constituting the turbulence generating part 25 is provided in the introduction path 22 constituting the direction changing part 27 has been described, but the present invention is not limited thereto. For example, as shown in FIG. 14, a configuration in which a protrusion 25b is provided upstream of the throttle portion 25a may be employed. Thereby, the flow rate of the washing water flowing into the throttle portion can be increased with a simple configuration without providing the turbulence generating portion. As a result, the pulsation effect of the jet of washing water ejected from the outlet 23a of the discharge port 23 of the nozzle ejection portion 26 can be enhanced.
　（実施の形態３）
　以下、本発明の実施の形態３における衛生洗浄装置について、図１５を用いて説明する。 (Embodiment 3)
Hereinafter, a sanitary washing device according to Embodiment 3 of the present invention will be described with reference to FIG.
　図１５は、本発明の実施の形態３に係る脈動ポンプの断面図である。 FIG. 15 is a cross-sectional view of the pulsation pump according to Embodiment 3 of the present invention.
　図１５に示すように、本実施の形態の衛生洗浄装置は、水ポンプ１４を脈動ポンプ１４ａにした点で、上記各実施の形態の衛生洗浄装置とは異なる。なお、他の構成や、作用・効果は、上記各実施の形態の衛生洗浄装置と同じであるので、詳細な説明は省略する。また、脈動ポンプ１４ａを、容積型ポンプ１４ａで構成した例で説明する。 As shown in FIG. 15, the sanitary washing device of the present embodiment is different from the sanitary washing device of each of the above embodiments in that the water pump 14 is a pulsation pump 14a. In addition, since another structure, an effect | action and effect are the same as the sanitary washing apparatus of said each embodiment, detailed description is abbreviate | omitted. Further, an example in which the pulsation pump 14a is constituted by a positive displacement pump 14a will be described.
　まず、本実施の形態の衛生洗浄装置の本体部に設けられる脈動ポンプである容積型ポンプの構成と動作について、図１５を用いて説明する。 First, the configuration and operation of a positive displacement pump that is a pulsation pump provided in the main body of the sanitary washing device of the present embodiment will be described with reference to FIG.
　図１５に示すように、容積型ポンプ１４ａは、少なくとも円柱状空間８２を有するポンプ本体部８１と、圧送ピストン８３と、モータ８６と、リンク機構８９などから構成されている。このとき、圧送ピストン８３により、ポンプ本体部８１の円柱状空間８２がポンプ室８２ａとポンプ室８２ｂとに分割される。 As shown in FIG. 15, the positive displacement pump 14a includes a pump main body 81 having at least a cylindrical space 82, a pressure feed piston 83, a motor 86, a link mechanism 89, and the like. At this time, the cylindrical space 82 of the pump body 81 is divided into a pump chamber 82a and a pump chamber 82b by the pressure feed piston 83.
　ポンプ本体部８１の一方の側部には洗浄水の流入部８４が設けられ、他方の側部には洗浄水の流出部８５が設けられている。流入部８４は人体洗浄水流路２０２を介して熱交換器１２に接続され、流出部８５は人体洗浄水流路２０２を介して切替弁１６に接続される。 The washing water inflow portion 84 is provided on one side of the pump body 81, and the washing water outflow portion 85 is provided on the other side. The inflow part 84 is connected to the heat exchanger 12 via the human body washing water flow path 202, and the outflow part 85 is connected to the switching valve 16 via the human body washing water flow path 202.
　そして、モータ８６の回転軸に取り付けられたギヤ８７と、リンク機構８９に連接されるギヤ８８とが噛み合うことにより、リンク機構８９を介して、モータ８６の回転運動が圧送ピストン８３の往復運動に変換される。つまり、モータ８６が回転すると、ギヤ８７、ギヤ８８、リンク機構８９を介して圧送ピストン８３が往復運動する。 Then, the gear 87 attached to the rotation shaft of the motor 86 and the gear 88 connected to the link mechanism 89 mesh with each other, so that the rotational motion of the motor 86 is converted to the reciprocating motion of the pressure feed piston 83 via the link mechanism 89. Converted. That is, when the motor 86 rotates, the pressure-feed piston 83 reciprocates through the gear 87, the gear 88, and the link mechanism 89.
　これにより、容積型ポンプ１４ａは、以下に示す動作を行う。 Thereby, the positive displacement pump 14a performs the following operation.
　まず、圧送ピストン８３が下方向に移動して、ポンプ室８２ａの容積が増加すると、ポンプ室８２ａの圧力が流入部８４よりも圧力が低くなる。そのため、熱交換器１２内の洗浄水が流入部８４ａからポンプ室８２ａに供給される。 First, when the pumping piston 83 moves downward and the volume of the pump chamber 82a increases, the pressure of the pump chamber 82a becomes lower than that of the inflow portion 84. Therefore, the cleaning water in the heat exchanger 12 is supplied from the inflow part 84a to the pump chamber 82a.
　一方、圧送ピストン８３が上方向に移動して、ポンプ室８２ａの容積を減少さると、ポンプ室８２ａの圧力が流出部８５よりも圧力が高くなる。そのため、ポンプ室８２ａに供給された洗浄水が、流出部８５ａに吐出される。 On the other hand, when the pumping piston 83 moves upward to reduce the volume of the pump chamber 82a, the pressure in the pump chamber 82a becomes higher than that in the outflow portion 85. Therefore, the cleaning water supplied to the pump chamber 82a is discharged to the outflow portion 85a.
　これにより、ポンプ室８２ａ内の洗浄水が流出部８５ａから吐出されるときに、ポンプ室８２ｂ内に流入部８４ｂから洗浄水が供給される。そして、ポンプ室８２ａ内の洗浄水が流入部８４ａから供給されるときに、ポンプ室８２ｂ内の洗浄水が流出部８５ｂから吐出される。 Thereby, when the cleaning water in the pump chamber 82a is discharged from the outflow portion 85a, the cleaning water is supplied from the inflow portion 84b into the pump chamber 82b. When the cleaning water in the pump chamber 82a is supplied from the inflow portion 84a, the cleaning water in the pump chamber 82b is discharged from the outflow portion 85b.
　つまり、圧送ピストン８３の上下運動により、ポンプ室８２ａまたはポンプ室８２ｂ内の洗浄水に対して交互に圧力が加えられる。また、圧送ピストン８３の往復する速度を１回転中で変化させることにより、流入部８４の洗浄水に周期的な脈動を与えることができる。このとき、洗浄水の脈動圧は、脈動時の最低圧力が容積型ポンプ１４ａの流入圧にほぼ等しくなる。一方、脈動圧の最高圧力は、容積型ポンプ１４ａの負荷、容積型ポンプ１４ａの容積変化の速度に対応した圧力となる。これにより、脈動圧が付与された洗浄水が、容積型ポンプ１４ａの流出部８５から吐出される。 That is, the pressure is alternately applied to the cleaning water in the pump chamber 82a or the pump chamber 82b by the vertical movement of the pressure-feed piston 83. Moreover, periodic pulsation can be given to the wash water of the inflow part 84 by changing the reciprocating speed of the pressure feed piston 83 in one rotation. At this time, the pulsation pressure of the washing water is such that the minimum pressure during pulsation is substantially equal to the inflow pressure of the positive displacement pump 14a. On the other hand, the maximum pulsating pressure is a pressure corresponding to the load of the positive displacement pump 14a and the volume change speed of the positive displacement pump 14a. Thereby, the wash water to which the pulsating pressure is applied is discharged from the outflow portion 85 of the positive displacement pump 14a.
　以上により、本実施の形態によれば、容積型ポンプ１４ａである脈動ポンプ１４ａにより、人体洗浄ノズル１の流入路２１、方向転換部２７、導入路２２を介してノズル噴出部２６に、予め脈動を付与された洗浄水が通流する。そのため、脈動する洗浄水により、方向転換部２７での渦などの洗浄水の乱れが促進される。これにより、急縮小流路を構成するノズル噴出部２６の吐出口２３の出口部２３ａからの噴出する洗浄水の噴流に、より高い脈動効果を付与できる。 As described above, according to the present embodiment, the pulsation pump 14a, which is the positive displacement pump 14a, pulsates in advance to the nozzle ejection section 26 via the inflow path 21, the direction changing section 27, and the introduction path 22 of the human body washing nozzle 1. Wash water that has been given through. Therefore, the turbulent cleaning water promotes the disturbance of the cleaning water such as a vortex in the direction changing portion 27. Thereby, a higher pulsation effect can be imparted to the jet of washing water ejected from the outlet portion 23a of the discharge port 23 of the nozzle ejection portion 26 constituting the sudden reduction flow path.
　また、従来の人体洗浄ノズルでは、洗浄効果と洗浄感を確保するために、強力で高価な脈動ポンプが必要であった。 Also, conventional human body washing nozzles require a powerful and expensive pulsation pump to ensure a washing effect and a feeling of washing.
　しかし、本実施の形態では、実施の形態１で説明したように、ノズル噴出部２６で洗浄水の噴流に脈動を付与できるので、脈動ポンプ１４ａに、より脈動圧力の小さな脈動ポンプ１４ａを用いることができる。そして、ノズル噴出部２６の吐出口２３の出口部２３ａから、好ましい洗浄感が得られる大きさの水塊に分断した洗浄水の噴流を効果的に噴出することができる。そのため、脈動ポンプ１４ａの負荷を低減して、低コストの脈動ポンプ１４ａを用いることができる。その結果、低コスト化が可能な衛生洗浄装置を実現できる。 However, in the present embodiment, as explained in the first embodiment, the pulsation pump 14a having a smaller pulsation pressure can be used as the pulsation pump 14a because pulsation can be imparted to the jet of washing water at the nozzle ejection portion 26. Can do. And the jet of the wash water divided | segmented into the water mass of the magnitude | size from which the preferable washing | cleaning feeling is acquired can be efficiently jetted from the exit part 23a of the discharge outlet 23 of the nozzle jet part 26. FIG. Therefore, the load of the pulsation pump 14a can be reduced and the low-cost pulsation pump 14a can be used. As a result, a sanitary washing apparatus capable of reducing costs can be realized.
　以上で説明したように、本発明は、給水された洗浄水を人体洗浄ノズルから人体局部に向けて吐水する衛生洗浄装置であって、人体洗浄ノズルは、流入路と、導入路と、吐出口を有するノズル噴出部と、を備える。そして、流入路と導入路の一方とは、絞り部を有する方向転換部を介して接続され、ノズル噴出部は、導入路の他方と接続されるとともに、導入路と吐出口とにより流路断面が急縮小された急縮小流路から構成される。 As described above, the present invention is a sanitary cleaning device that discharges supplied cleaning water from a human body cleaning nozzle toward a human body part, and the human body cleaning nozzle includes an inflow path, an introduction path, and a discharge port. A nozzle jetting part. Then, one of the inflow path and the introduction path is connected via a direction changing section having a throttle section, and the nozzle ejection section is connected to the other of the introduction paths, and the flow path cross section is defined by the introduction path and the discharge port. Is composed of a rapidly reduced flow path.
　この構成によれば、人体洗浄ノズルの流入路と導入路を接続する方向転換部に絞り部を設けている。これにより、流入路から方向転換部に注入される洗浄水の流速が絞り部で速くなる。そして、流速の速い状態で、洗浄水が導入路の内壁面に衝突するとともに、方向転換部により流れる方向が転換され、洗浄水に渦などの流れの乱れを生成する。その結果、洗浄水の噴流に、高い脈動効果を付与して、ノズル噴出部の吐出口から洗浄水を噴出できる。 According to this configuration, the throttle part is provided in the direction changing part that connects the inflow path and the introduction path of the human body washing nozzle. As a result, the flow rate of the washing water injected from the inflow path into the direction changing portion is increased at the throttle portion. Then, in a state where the flow velocity is fast, the wash water collides with the inner wall surface of the introduction path, and the direction of flow is changed by the direction changing portion, and turbulence such as vortex is generated in the wash water. As a result, a high pulsation effect is imparted to the jet of cleaning water, and the cleaning water can be ejected from the discharge port of the nozzle ejection section.
　また、急縮小流路を構成するノズル噴出部により、ノズル噴出部に流入する洗浄水は、吐出口から縮流の状態で噴出する。このとき、ノズル噴出部において、吐出口に向かって、縮流した洗浄水の噴流外周と吐出口の内周壁に空間が形成される。そして、洗浄水の噴流外周と吐出口の内周壁で構成される空間に、外部から空気が流入して、縮流した噴流外周外の洗浄水と空気により渦が発生し、洗浄水と空気が混合する。このとき、洗浄水と空気との混合現象は一様ではないため、空気と洗浄水が混合された塊となって流出する。これにより、ノズル噴出部の吐出口から噴出する洗浄水に、脈動を付与できる。その結果、洗浄水が少流量の場合でも、高い洗浄効果と洗浄感の向上した衛生洗浄装置を実現できる。このとき、洗浄水の流速が十分に速い場合、キャビテーションが、渦や、ノズル噴出部の吐出口の流入部の角を起点として発生する。その結果、さらに大きな脈動を洗浄水に付与できる。 Also, the washing water flowing into the nozzle ejection portion is ejected in a contracted state from the discharge port by the nozzle ejection portion constituting the rapidly reducing flow path. At this time, in the nozzle ejection portion, a space is formed on the outer periphery of the jet of the wash water that has flowed toward the discharge port and the inner peripheral wall of the discharge port. Then, air flows into the space formed by the outer periphery of the jet of cleaning water and the inner peripheral wall of the discharge port, and vortexes are generated by the cleaning water and air outside the outer periphery of the jet that has contracted. Mix. At this time, since the mixing phenomenon of washing water and air is not uniform, it flows out as a lump in which air and washing water are mixed. Thereby, pulsation can be given to the washing water ejected from the discharge port of the nozzle ejection portion. As a result, it is possible to realize a sanitary washing apparatus that has a high washing effect and improved washing feeling even when the washing water has a small flow rate. At this time, when the flow rate of the washing water is sufficiently high, cavitation occurs from the vortex or the corner of the inflow portion of the discharge port of the nozzle ejection portion. As a result, even greater pulsation can be imparted to the wash water.
　さらに、ノズル噴出部の吐出口の出口部において急縮小流路により、洗浄水の縮流が最小径部となる。そして、洗浄水の噴流と、吐出口の内周壁との間に隙間が形成される。これにより、洗浄水の噴流は、吐出口の内周壁により吐出する方向が影響を受けない。その結果、洗浄水の噴流の吐出する方向（例えば、人体洗浄ノズルの突出する前後方向）に自由度を与えることができる。さらに、洗浄水の噴流外周と吐出口の内周壁で構成される空間に発生する渦は、時間的にも、空間的にも変動する。そのため、渦の変動にしたがって、洗浄水の噴流の吐出方向を揺動させる作用を与えることができる。 Furthermore, the contracted flow of the washing water becomes the minimum diameter portion due to the rapidly reducing flow path at the outlet portion of the discharge port of the nozzle ejection portion. A gap is formed between the washing water jet and the inner peripheral wall of the discharge port. Thereby, the jet direction of the wash water is not affected by the direction of discharge by the inner peripheral wall of the discharge port. As a result, it is possible to give a degree of freedom to the direction in which the cleaning water jet is discharged (for example, the front-back direction in which the human body cleaning nozzle protrudes). Furthermore, the vortex generated in the space formed by the outer periphery of the washing water jet and the inner peripheral wall of the discharge port varies both in time and space. Therefore, it is possible to give an action of swinging the jet direction of the washing water jet according to the fluctuation of the vortex.
　また、本発明の衛生洗浄装置によれば、ノズル噴出部は、吐出口の直径Ｄと吐出口の流路長さＬとのアスペクト比（Ｌ／Ｄ）を０．２５から０．７５に設定されてもよい。さらに、ノズル噴出部は、吐出口の直径Ｄと吐出口の流路長さＬとのアスペクト比（Ｌ／Ｄ）を０．４から０．７に設定されてもよい。 Further, according to the sanitary washing device of the present invention, the nozzle ejection portion sets the aspect ratio (L / D) between the diameter D of the discharge port and the flow path length L of the discharge port from 0.25 to 0.75. May be. Further, in the nozzle ejection portion, the aspect ratio (L / D) between the diameter D of the ejection port and the flow path length L of the ejection port may be set to 0.4 to 0.7.
　これらの構成により、ノズル噴出部の吐出口で生ずる縮流部の最小径部（流速最大部）を、吐出口の出口部の位置に略一致（一致を含む）させることができる、そのため、吐出口の出口部の位置において、洗浄水の噴流外周と吐出口の内周壁で構成される空間が最大となる。そして、ノズル噴出部の吐出口で形成される縮流部で発生する負圧部へ流入する空気の開口面積は最大となり、空気が流入しやすくなる。これにより、流入した空気と洗浄水が効果的に混合して、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、強い洗浄感が得られる大きさの水塊に分断できる。その結果、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、高い洗浄効果と洗浄感の衛生洗浄装置を実現できる。 With these configurations, the minimum diameter portion (maximum flow velocity portion) of the contracted flow portion generated at the discharge port of the nozzle discharge portion can be substantially matched (including coincidence) with the position of the outlet portion of the discharge port. At the position of the outlet portion of the outlet, the space constituted by the outer periphery of the washing water jet and the inner peripheral wall of the discharge port is maximized. And the opening area of the air which flows into the negative pressure part which generate | occur | produces in the contraction part formed with the discharge outlet of a nozzle ejection part becomes the largest, and it becomes easy to flow in air. Thereby, even when the inflowing air and the cleaning water are effectively mixed, and the jet of the cleaning water from the human body cleaning nozzle has a small flow rate, it can be divided into a water mass having a size that provides a strong cleaning feeling. As a result, it is possible to realize a sanitary washing device having a high washing effect and a feeling of washing even when the jet of washing water from the human body washing nozzle has a small flow rate.
　さらに、アスペクト比（Ｌ／Ｄ）を０．２５から０．７５、もしくは０．４から０．７に設定することにより、ノズル噴出部の吐出口の出口部において、噴流外周と吐出口の内周壁で構成される空間が最大となる構成にできる。そのため、外部の空気が空間内に流入するとともに、洗浄水の噴流に取り込まれやすくなる。そして、洗浄水の噴流中に取り込まれた空気は、洗浄水の噴流の体積を増加させて、噴流外周の直径を大きくする。このとき、洗浄水の噴流外周は空間内に広がる余裕があるため、洗浄水に取り込まれた空気により、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、強い洗浄感が得られる大きさの水塊に分断できる。そして、分断された水塊による脈動噴流により、被洗浄部に衝突する噴流の荷重変動幅が大きくなる。その結果、洗浄水の噴流が少流量の場合においても、高い洗浄効果と洗浄感に優れた衛生洗浄装置を実現できる。 Further, by setting the aspect ratio (L / D) from 0.25 to 0.75, or from 0.4 to 0.7, at the outlet portion of the discharge port of the nozzle discharge portion, The space constituted by the peripheral walls can be maximized. Therefore, outside air flows into the space and is easily taken into the jet of cleaning water. And the air taken in in the jet of cleaning water increases the volume of the jet of cleaning water and increases the diameter of the outer periphery of the jet. At this time, since the outer periphery of the washing water jet has room to spread in the space, the air taken into the washing water can provide a strong feeling of washing even when the washing water jet from the human body washing nozzle has a small flow rate. It can be divided into water masses. And the load fluctuation width of the jet which collides with a to-be-cleaned part becomes large by the pulsating jet by the divided water mass. As a result, even when the cleaning water jet has a small flow rate, it is possible to realize a sanitary cleaning device with a high cleaning effect and excellent cleaning feeling.
　また、本発明の衛生洗浄装置によれば、方向転換部は、流入路と導入路を流れる洗浄水の通流方向を、略直角に転換する構成でもよい。これにより、流入路から流入する洗浄水が導入路の内壁面に衝突し、ノズル噴出部に向かう洗浄水の流速分布が変わる。そして、急縮小流路を構成するノズル噴出部で洗浄水の噴流が分断されるとともに、人体洗浄ノズルの突出する方向（前後方向）の洗浄水が揺動して吐出する。その結果、高い洗浄効果と洗浄感に優れた衛生洗浄装置を実現できる。 Further, according to the sanitary washing device of the present invention, the direction changing portion may be configured to change the flow direction of the cleaning water flowing through the inflow path and the introduction path at substantially right angles. Thereby, the wash water flowing in from the inflow passage collides with the inner wall surface of the introduction passage, and the flow velocity distribution of the wash water toward the nozzle ejection portion changes. Then, the jet of washing water is divided at the nozzle jetting part constituting the sudden reduction flow path, and the washing water in the direction in which the human body washing nozzle protrudes (front-rear direction) is swung and discharged. As a result, it is possible to realize a sanitary washing device that has a high washing effect and a good feeling of washing.
　また、本発明の衛生洗浄装置によれば、導入路に接続されるノズル噴出部の吐出口の流入部は、流入部の外方から吐出口の内周壁に向かう角を鋭角に形成してもよい。これにより、ノズル噴出部の吐出口の流入部の角の部分で、洗浄水の流れを確実に剥離させることができる。このとき、ノズル噴出部で形成される縮流部で発生する負圧部へ、外部から空気が流入しやすくなるように作用する。その結果、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、強い洗浄感が得られる大きさの水塊に分断して、洗浄効果と洗浄感をより向上することができる。 Further, according to the sanitary washing device of the present invention, the inflow portion of the discharge port of the nozzle ejection portion connected to the introduction path may have an acute angle from the outside of the inflow portion toward the inner peripheral wall of the discharge port. Good. Thereby, the flow of cleaning water can be reliably peeled off at the corner portion of the inflow portion of the discharge port of the nozzle ejection portion. At this time, it acts so that air can easily flow into the negative pressure portion generated at the contracted flow portion formed by the nozzle ejection portion. As a result, even when the jet of washing water from the human body washing nozzle has a small flow rate, it can be divided into water bodies having a size that provides a strong feeling of washing, and the washing effect and feeling of washing can be further improved.
　また、本発明の衛生洗浄装置によれば、吐出口の流入部に、導入路側に向かって突出するバリを設けてもよい。これにより、ノズル噴出部の吐出口の流入部の角のエッジを確保して、角のエッジ部分で、洗浄水の流れを確実に剥離させることができる。このとき、ノズル噴出部で形成される縮流部で発生する負圧部へ、外部から空気を流入しやすくなるように作用する。その結果、人体洗浄ノズルからの洗浄水の噴流が少流量の場合でも、強い洗浄感が得られる大きさの水塊に分断して、洗浄効果と洗浄感をより向上することができる。 Further, according to the sanitary washing device of the present invention, a burr protruding toward the introduction path may be provided at the inflow portion of the discharge port. Thereby, the edge of the corner | angular part of the inflow part of the discharge outlet of a nozzle ejection part can be ensured, and the flow of washing water can be made to peel reliably in an edge part of a corner. At this time, it acts so that it becomes easy to flow in air from the outside to the negative pressure part generated in the contraction part formed by the nozzle ejection part. As a result, even when the jet of washing water from the human body washing nozzle has a small flow rate, it can be divided into water bodies having a size that provides a strong feeling of washing, and the washing effect and feeling of washing can be further improved.
　また、本発明の衛生洗浄装置によれば、方向転換部側の導入路に、流入路から絞り部を介して流入する洗浄水の流れを乱す乱れ発生部を設けてもよい。さらに、乱れ発生部は、導入路の底部から吐出口に向かって設けられる突起で構成してもよい。これらにより、導入路に流入する洗浄水の流れの乱れを促進して、さらにノズル噴出部から噴出する洗浄水の脈動効果をより高めることができる。 In addition, according to the sanitary washing device of the present invention, a turbulence generating part that disturbs the flow of the cleaning water flowing from the inflow path through the throttle part may be provided in the introduction path on the direction changing part side. Furthermore, the turbulence generating part may be constituted by a protrusion provided from the bottom of the introduction path toward the discharge port. Accordingly, it is possible to promote turbulence in the flow of the washing water flowing into the introduction path and further enhance the pulsation effect of the washing water ejected from the nozzle ejection portion.
　また、本発明の衛生洗浄装置によれば、突起は、角柱形状で構成してもよい。これにより、導入路に流入する洗浄水の流れの乱れをより促進できる。 Further, according to the sanitary washing device of the present invention, the protrusion may be formed in a prismatic shape. Thereby, disturbance of the flow of the washing water flowing into the introduction path can be further promoted.
　また、本発明の衛生洗浄装置によれば、突起の上面は、絞り部側から離れるにしたがって下方に傾斜させてもよい。これにより、導入路に流入する洗浄水の流れの乱れを、さらに促進できる。 Further, according to the sanitary washing device of the present invention, the upper surface of the protrusion may be inclined downward as it is separated from the throttle portion side. Thereby, the disturbance of the flow of the washing water flowing into the introduction path can be further promoted.
　また、本発明の衛生洗浄装置によれば、突起の上面の位置は、方向転換部を構成する流入ロの最下部から、流入ロと絞り部との間隔の２倍の範囲の高さで設けてもよい。これにより、導入路に流入する洗浄水の流れを効果的に乱れさすことができる。 Further, according to the sanitary washing device of the present invention, the position of the upper surface of the protrusion is provided at a height in the range of twice the interval between the inflow rod and the throttle portion from the lowermost portion of the inflow rod constituting the direction changing portion. May be. Thereby, the flow of the washing water flowing into the introduction path can be effectively disturbed.
　また、本発明の衛生洗浄装置によれば、人体洗浄ノズルの上流に脈動ポンプを備えてもよい。これにより、ノズル噴出部で発生する脈動を利用して、より脈動圧力の小さな脈動ポンプを用いることができる。その結果、ノズル噴出部からの洗浄水の噴流による好ましい洗浄感が得られる大きさの水塊に分断できるとともに、脈動ポンプの負荷を低減できる。 Further, according to the sanitary washing device of the present invention, a pulsation pump may be provided upstream of the human body washing nozzle. Thereby, the pulsation pump with smaller pulsation pressure can be used using the pulsation which generate | occur | produces in a nozzle ejection part. As a result, the pulsating pump can be reduced in load while being able to be divided into water blocks of a size that can provide a preferable feeling of cleaning by the jet of cleaning water from the nozzle ejection part.
　本発明は、洗浄水の噴流が少流量の場合でも、強い洗浄感が得られる大きさの水塊に分断して、洗浄効果と洗浄感を高めることができる。そのため、温水洗浄便座のみならず顔や頭、手、足などの衛生洗浄装置や、ペットなどの動物や生き物以外の洗浄などの用途にも有用である。 The present invention can improve the cleaning effect and the feeling of washing by dividing the water into large water masses that can provide a strong feeling of washing even when the jet of washing water has a small flow rate. Therefore, it is useful not only for a warm water cleaning toilet seat, but also for hygiene cleaning devices such as the face, head, hands, and feet, and for cleaning animals other than animals such as pets and living things.
　１　　人体洗浄ノズル（おしりノズル）
　２　　ビデノズル
　３　　ノズル洗浄用ノズル
　４　　制御部
　５　　分岐水栓
　６　　ストレーナ
　７　　電磁弁
　８　　大気開放部
　８ａ　　タンク
　９　　定流量弁
　１２　　熱交換器
　１３ａ，１３ｂ　　温度センサ
　１４　　水ポンプ
　１４ａ　　容積型ポンプ（脈動ポンプ）
　１５　　バッファタンク
　１６　　切替弁
　２０　　ノズル部
　２１　　流入路
　２１ａ　　最下部
　２２　　導入路
　２２ａ　　内壁面
　２２ｂ　　底部
　２３　　吐出口
　２３ａ　　出口部
　２３ｂ　　流入部
　２３ｃ　　角
　２３ｄ　　内周壁
　２５　　乱れ発生部
　２５ａ　　絞り部
　２５ｂ，２５ｃ　　突起
　２５ｃ１　　上面
　２６　　ノズル噴出部
　２７　　方向転換部
　２８　　縮流曲線
　２８ａ　　最小径部
　２９　　渦
　３１　　バキュームブレーカ
　４０　　便器ノズル
　５１　　リリーフ弁
　８１　　ポンプ本体部
　８２　　円柱状空間
　８２ａ　　ポンプ室
　８２ｂ　ポンプ室
　８３　　圧送ピストン
　８４，８４ａ，８４ｂ　　流入部
　８５，８５ａ，８５ｂ　　流出部
　８６　　モータ
　８７，８８　　ギヤ
　８９　　リンク機構
　１００　　衛生洗浄装置
　２００　　本体部
　２０１　　水道配管
　２０２　　人体洗浄水流路
　２０５　　便器洗浄水流路
　３００　　遠隔操作装置
　３０１　　コントローラ本体部
　３０２　　停止スイッチ
　３０３　　おしりスイッチ（おしり洗浄ボタン）
　３０４　　ビデスイッチ（ビデ洗浄ボタン）
　３０５　　ワイド洗浄スイッチ
　３０６　　リズム洗浄スイッチ
　３０７　　水勢設定スイッチ
　３０９　　ムーブ洗浄スイッチ
　３１０　　洗浄位置設定スイッチ
　４００　　便座部
　５００　　蓋部
　６００　　入室検知センサ
　６１０　　着座センサ
　７００　　便器
　１０００　　トイレ装置 1 Human body cleaning nozzle (wet nozzle)
2 Bide nozzle 3 Nozzle cleaning nozzle 4 Control unit 5 Branch tap 6 Strainer 7 Solenoid valve 8 Atmospheric release unit 8a Tank 9 Constant flow valve 12 Heat exchanger 13a, 13b Temperature sensor 14 Water pump 14a Positive displacement pump (pulsation pump)
DESCRIPTION OF SYMBOLS 15 Buffer tank 16 Switching valve 20 Nozzle part 21 Inflow path 21a Bottom part 22 Introduction path 22a Inner wall surface 22b Bottom part 23 Discharge port 23a Outlet part 23b Inflow part 23c Angle 23d Inner peripheral wall 25 Disturbing part 25a Restriction part 25b, 25c Upper surface 25c1 Projection 25c1 26 Nozzle ejection part 27 Direction change part 28 Constriction curve 28a Minimum diameter part 29 Vortex 31 Vacuum breaker 40 Toilet nozzle 51 Relief valve 81 Pump body part 82 Columnar space 82a Pump room 82b Pump room 83 Pumping piston 84, 84a, 84b Inflow 85, 85a, 85b Outflow part 86 Motor 87, 88 Gear 89 Link mechanism 100 Sanitary washing apparatus 200 Main body part 201 Water supply pipe 202 Human body washing water flow path 205 Toilet bowl washing water flow path 300 Remote control device 3 1 controller unit 302 stop switch 303 posterior switch (bottom wash button)
304 Bidet switch (Bidet washing button)
305 Wide washing switch 306 Rhythm washing switch 307 Water force setting switch 309 Move washing switch 310 Washing position setting switch 400 Toilet seat part 500 Lid part 600 Entrance detection sensor 610 Seat sensor 700 Toilet bowl 1000 Toilet device

Claims (12)

  1. 給水された洗浄水を人体洗浄ノズルから人体局部に向けて吐水する衛生洗浄装置であって、
    前記人体洗浄ノズルは、流入路と、導入路と、吐出口を有するノズル噴出部と、を備え、
    前記流入路と前記導入路の一方とは、絞り部を有する方向転換部を介して接続され、
    前記ノズル噴出部は、前記導入路の他方と接続されるとともに、前記導入路と前記吐出口とにより流路断面が急縮小された急縮小流路から構成される衛生洗浄装置。     A sanitary washing device that discharges the supplied wash water from the human body washing nozzle toward the human body part,
    The human body washing nozzle includes an inflow path, an introduction path, and a nozzle ejection portion having a discharge port,
    One of the inflow path and the introduction path is connected via a direction changing portion having a throttle portion,
    The said nozzle ejection part is a sanitary washing apparatus comprised from the rapid contraction flow path by which the flow path cross-section was rapidly reduced by the said introduction path and the said discharge outlet while being connected with the other of the said introduction path.
  2. 前記ノズル噴出部は、前記吐出口の直径Ｄと前記吐出口の流路長さＬとのアスペクト比Ｌ／Ｄを０．２５から０．７５に設定される請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein the nozzle ejection portion has an aspect ratio L / D between a diameter D of the ejection port and a flow path length L of the ejection port of 0.25 to 0.75. .
  3. 前記ノズル噴出部は、前記吐出口の直径Ｄと前記吐出口の流路長さＬとのアスペクト比Ｌ／Ｄを０．４から０．７に設定される請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein the nozzle ejection portion has an aspect ratio L / D between a diameter D of the ejection port and a flow path length L of the ejection port of 0.4 to 0.7. .
  4. 前記方向転換部は、前記流入路と前記導入路を流れる前記洗浄水の通流方向を、略直角に転換する請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein the direction changing unit changes a flow direction of the cleaning water flowing through the inflow path and the introduction path at a substantially right angle.
  5. 前記導入路に接続される前記ノズル噴出部の前記吐出口の流入部は、前記流入部の外方から前記吐出口の内周壁に向かう角を鋭角に形成した請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein the inflow portion of the discharge port of the nozzle ejection portion connected to the introduction path is formed with an acute angle from the outside of the inflow portion toward the inner peripheral wall of the discharge port. .
  6. 前記吐出口の前記流入部に、前記導入路側に向かって突出するバリを設けた請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein a burr projecting toward the introduction path side is provided at the inflow portion of the discharge port.
  7. 前記方向転換部側の前記導入路に、前記流入路から前記絞り部を介して流入する前記洗浄水の流れを乱す乱れ発生部を設けた請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, wherein a turbulence generating unit that disturbs the flow of the cleaning water flowing from the inflow channel through the throttle unit is provided in the introduction channel on the side of the direction changing unit.
  8. 前記乱れ発生部は、前記導入路の底部から前記吐出口に向かって設けられる突起で構成される請求項７に記載の衛生洗浄装置。 The sanitary washing device according to claim 7, wherein the turbulence generation unit is configured by a protrusion provided from the bottom of the introduction path toward the discharge port.
  9. 前記突起は、角柱形状で構成される請求項８に記載の衛生洗浄装置。 The sanitary washing device according to claim 8, wherein the protrusion is formed in a prismatic shape.
  10. 前記突起の上面は、前記絞り部側から離れるにしたがって下方に傾斜している請求項８または請求項９のいずれか１項に記載の衛生洗浄装置。 The sanitary washing device according to any one of claims 8 and 9, wherein an upper surface of the protrusion is inclined downward as it is away from the throttle portion side.
  11. 前記突起の上面の位置は、前記方向転換部を構成する前記流入路の最下部から、前記流入路と前記絞り部との間隔の２倍の範囲の高さで設けられる請求項８に記載の衛生洗浄装置。 The position of the upper surface of the protrusion is provided at a height in a range of twice the distance between the inflow path and the throttle portion from the lowermost part of the inflow path constituting the direction changing portion. Sanitary washing device.
  12. 前記人体洗浄ノズルの上流に脈動ポンプを備えた請求項１に記載の衛生洗浄装置。 The sanitary washing device according to claim 1, further comprising a pulsation pump upstream of the human body washing nozzle.
PCT/JP2013/001289 2012-11-06 2013-03-04 Hygienic cleaning device WO2014073124A1 (en)

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EP13853501.8A EP2918740B1 (en) 2012-11-06 2013-03-04 Hygienic cleaning device
JP2014505422A JP5594448B1 (en) 2012-11-06 2013-03-04 Sanitary washing device

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EP2918740A4 (en) 2015-12-23
JP5594448B1 (en) 2014-09-24

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