JP2023079013A - Sanitary washing device, nozzle, and generating method of intermittent water flow - Google Patents

Abstract

To generate an intermittent water flow in the air.SOLUTION: A sanitary washing device 100 includes a heating device 140 and a nozzle 110 for discharging hot water. In the sanitary washing device 100, the nozzle 110 includes: a first flow channel 111 that has a first discharge port 119 that discharges first water 301; an ejection port 112 that ejects second water 302: a direction change part 114 that changes a direction of the second water 302 ejected from the ejection port 112 and generates third water 303; a return loop flow channel 115 that has a return loop flow channel discharge port 113 at an end part thereof so as to be arranged to allow the second water 302 and the third water 303 to cross each other; and a second flow channel 116 that has a second discharge port 120 that discharges fourth water 304, in which the second water 302 whose flow direction is changed by the third water 303 discharged from the return discharge port 113 and the third water 303 are mixed, to be converged with the first water 301 discharged from the first discharge port 119.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a sanitary washing device for washing a human private part, a nozzle provided in the sanitary washing device and the like, and an intermittent water stream generating method.

In a sanitary washing device for washing the human body's private parts, intermittent jetting of hot water to the human body's private parts rather than continuous jetting of warm water gives a so-called cleansing feeling, which is a feeling of thorough washing even with a relatively small amount of warm water. It is known that it can be applied to the human body.

Patent Literature 1 describes a technique in which a sanitary washing apparatus is equipped with a pump that pressurizes and discharges water, and the pump intermittently injects warm water.

JP 2016-56566 A

However, in order to achieve intermittent jetting by the pump, the sanitary washing device requires a rotation drive device, a speed reduction mechanism, a motion conversion mechanism, and the like. When the number of parts of the sanitary washing apparatus increases and the structure becomes complicated, the number of assembly man-hours increases, the production efficiency decreases, and the cost increases. In addition, when using the sanitary washing device, the operation noise and vibration generated by the operation of the pump are factors that reduce the user's comfort.

In order to solve the above problems, the present invention aims to provide a sanitary washing device, a nozzle, and an intermittent water flow generation method that can generate intermittent water flow in a space without using a mechanical operation such as a pump. and

To achieve the above object, one aspect of the present invention is a sanitary washing apparatus comprising a nozzle for discharging water toward the private parts of a seated human body, wherein the nozzle is attached to the nozzle. A water inlet through which water to be supplied passes, a main channel provided inside the nozzle, a branch portion provided inside the nozzle, a first channel provided inside the nozzle, and the nozzle a first outlet provided inside the nozzle, an inlet provided inside the nozzle, a branch water channel provided inside the nozzle, an injection outlet provided inside the nozzle, and the nozzle a return loop flow path provided inside the nozzle, an injection space provided inside the nozzle, a receiving port provided inside the nozzle, and a second flow path provided inside the nozzle and a second outlet provided inside the nozzle, wherein the water inlet is provided at a first end of the main flow path, and the branch portion is positioned at a second end of the main flow path. the branching portion is located at a first end of the first channel, the first outlet is located at a second end of the first channel, and the flow is at a first end of the branch channel. The inlet and the branch are located, the injection port is located at the second end of the branch channel, the receiving port is located at the first end of the second channel, and the second The second outlet is located at a second end of the flow path, the return loop flow path has a return loop flow path inlet and a return loop flow path outlet, and the outlet face of the injection port has a A normal line intersects the inlet surface of the return loop passage inlet, and a first imaginary line connecting the injection port and the return loop passage inlet connects the return loop passage discharge port and the receiving port. A sanitary washing device that intersects with a second imaginary line that connects them.

In order to achieve the above object, the nozzle, which is one aspect of the present invention, includes a water inlet through which water supplied to the nozzle passes; a main flow path provided inside the nozzle; a branch portion provided, a first flow path provided inside the nozzle, a first outlet provided inside the nozzle, an inlet provided inside the nozzle, and an inside of the nozzle an injection port provided inside the nozzle; a return loop passage provided inside the nozzle; an injection space provided inside the nozzle; a receiving port provided inside, a second flow path provided inside the nozzle, and a second discharge port provided inside the nozzle; a water inlet is provided, the branch is located at the second end of the main flow path, the branch is located at the first end of the first flow path, and the second end of the first flow path is The first outlet is located at the first end of the branch channel, the inlet and the branch are located at the first end of the branch channel, the injection port is located at the second end of the branch channel, The receiving port is located at a first end of the second flow path, the second discharge port is located at a second end of the second flow path, and the return loop flow path is a return loop flow path. a passage inlet and a return loop passage outlet, wherein a normal to a discharge surface of the outlet intersects an inlet surface of the return loop passage inlet; A first imaginary line connecting the inlets intersects a second imaginary line connecting the return loop flow path outlet and the inlet.

Further, in order to achieve the above object, a method for generating an intermittent water stream, which is one of the present invention, discharges first water from a first discharge port provided at the end of a first flow path, and discharges second water from a discharge port. and the second water jetted from the jet port collides with the direction changing part to change the flow direction to be the third water, and the second water and the third water are arranged so as to intersect. a receiving port arranged on the downstream side of the direction changing portion in the direction of flow of the third water discharged from the return discharge port, the third water being guided through the return loop flow path to the returned discharge port; receives the fourth water in which the second water whose flow direction has been changed by the third water discharged from the return discharge port and the third water are mixed, and the fourth water received in the receiving port Water is guided through the second channel, and the fourth water is discharged from the second outlet provided at the end of the second channel so as to join the first water.

ADVANTAGE OF THE INVENTION According to this invention, the water which flies in space intermittently can be discharged without using mechanical operation|movements, such as a pump.

1 is a perspective view showing a sanitary washing device attached to a toilet according to this embodiment; FIG. FIG. 2 is a circuit diagram showing a water circuit included in the sanitary washing device according to the present embodiment; It is a perspective view which shows the external appearance of a nozzle. 4 is a cross-sectional view showing a state in which the nozzle is virtually cut along line AA shown in FIG. 3; FIG. FIG. 4 is a cross-sectional view showing the first stage of how water is ejected by a nozzle; FIG. 4 is a cross-sectional view showing the first stage of how water is ejected by a nozzle; FIG. 4 is a cross-sectional view showing a second stage of how water is ejected by the nozzle; FIG. 4 is a cross-sectional view showing a third stage of how water is ejected by the nozzle; FIG. 10 is a cross-sectional view showing a fourth stage of how water is ejected by a nozzle; It is a figure which shows the 1st state of the water flow in the space discharged from the nozzle. FIG. 10 is a diagram showing a second state of the water flow in the space discharged from the nozzle; FIG. 4 is a cross-sectional view of a nozzle not included in this embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a sanitary washing device, a nozzle, and an intermittent water stream generation method according to the present invention will be described with reference to the drawings. It should be noted that the following embodiments are examples for explaining the present invention, and are not intended to limit the present invention. For example, the shapes, structures, materials, constituent elements, relative positional relationships, connection states, numerical values, formulas, contents of each step in the method, order of each step, etc. shown in the following embodiments are examples, and are described below. may include content not listed in In addition, geometric expressions such as parallel and orthogonal are sometimes used, but these expressions do not indicate mathematical rigor, and substantially allowable errors, deviations, and the like are included. Expressions such as "simultaneous" and "identical" also include substantially permissible ranges.

In addition, the drawings are schematic diagrams that have been appropriately emphasized, omitted, or adjusted in proportion in order to explain the present invention, and are different from the actual shape, positional relationship, and proportion.

Further, in some cases, a plurality of inventions will be collectively described as one embodiment below. Also, some of the contents described below are described as optional components related to the present invention.

FIG. 1 is a perspective view showing a sanitary washing device 100 attached to a toilet bowl 200 according to this embodiment. FIG. 2 is a circuit diagram showing water circuit 180 included in sanitary washing device 100 according to the present embodiment. The sanitary washing device 100 is attached to the toilet bowl 200 and discharges water generated by the heating device 140 from the nozzle 110 onto the private parts of a person sitting on the toilet seat 190 . As shown in FIG. 1, the sanitary washing device 100 includes a toilet seat 190 that can be opened and closed with respect to the toilet bowl 200, a toilet lid (not shown) that can be opened and closed with respect to the toilet bowl 200, and a nozzle body having a nozzle 110. It has a nozzle drive unit (not shown) for making the nozzle 500 appear and disappear. In addition, in this specification and claims, "water" includes warm water. The nozzle 110 is desirably provided at the tip of the nozzle body 500 .

The configuration of the water circuit 180 provided in the sanitary washing device 100 is not particularly limited, but in the case of the present embodiment, it has the following configuration. The water circuit 180 includes a water supply connection port 181, a strainer 182, a water stop electromagnetic valve 183, a pressure reducing valve 184, a vacuum breaker 185, a heating device 140, a flow control valve 186, and a branch member 187 in order from upstream.

The water supply connection port 181 is a member that is connected to a water pipe by an adapter or the like, and has a strainer 182 integrally incorporated therein for preventing the inflow of dust contained in the tap water.

The water stop solenoid valve 183 is a valve that can open and close the flow of water from the water pipe under the control of the control device 109. By opening the water stop solenoid valve 183, water is discharged from the nozzle 110 and stopped. The discharge of water from the nozzle 110 can be stopped by closing the water electromagnetic valve 183 .

The pressure reducing valve 184 is a valve that reduces the pressure of water supplied from a water pipe and keeps it constant.

The vacuum breaker 185 prevents the water inside the water circuit 180 from backflowing into the water pipe when the pressure in the water pipe connected to the water supply connection port 181 becomes negative due to a water outage or the like. Vacuum breaker 185 is connected to vent pipe 188 . The vent pipe 188 is arranged up to the toilet bowl of the toilet bowl 200 . The vent pipe 188 serves as a supply path for intake air when the vacuum breaker 185 is activated, and also functions as a water discharge path for discharging into the toilet bowl 200 instantaneously released water when the vacuum breaker 185 is activated.

The heating device 140 is a device that heats tap water supplied from a water pipe to generate hot water. Although the type of heating device 140 is not particularly limited, in the case of the present embodiment, heating device 140 is a heat exchanger that instantaneously heats tap water supplied from a water pipe. The heating device 140 is integrally provided with a buffer tank 141 that makes the temperature of the water heated by the heating device 140 uniform.

The flow adjustment valve 186 is a valve that controls the amount of water supplied to the nozzle 110 by the control device 109 .

FIG. 3 is a perspective view showing the appearance of the nozzle 110. As shown in FIG. FIG. 4 is a cross-sectional view showing a state in which the nozzle 110 is virtually cut along line AA shown in FIG. The nozzle 110 is a nozzle that discharges hot water heated by the heating device 140 toward the private parts of the human body seated on the toilet seat 190, and includes a first flow path 111, an injection port 112, a direction changing part 114, and a return loop. A channel 115 and a second channel 116 are provided.

Water is supplied to the interior of the nozzle through the water inlet 118 located at the first end on the upstream side of the main channel 121, flows through the main channel 121, and reaches the branch portion 117 located at the second end on the downstream side. , branching portion 117 to form first water 301 and second water 302 . The first flow path 111 having the branch portion 117 located at the first end on the upstream side is a water path through which the first water 301 flows. The shape of the first flow path 111 is not particularly limited, but in the case of this embodiment, it is gently curved so that the direction of flow of the first water 301 changes approximately 90 degrees. The cross-sectional shape of the first flow path 111 in the cross section having the direction of the flow of the first water 301 as the normal is not limited, but in the case of the present embodiment, a rectangle is adopted. Note that the cross-sectional shape may be circular or the like. In the present specification, the cross-sectional shapes of the channels through which water flows are not limited, including the first channel 111 and the second channel 116 . As an example, the cross-sectional shape may be rectangular or circular.

The first discharge port 119 positioned at the second end on the downstream side of the first flow path 111 is an opening through which the first water 301 that has passed through the first flow path 111 is discharged. The shape of the first discharge port 119 is not particularly limited, but in the case of the present embodiment, it is a rectangle following the cross-sectional shape of the first flow path 111 . The first flow path 111 includes a first narrowed portion 391 whose cross-sectional area decreases in the direction from the branch portion 117 toward the first discharge port 119 . Specifically, the first throttle portion 391 maintains the length of the first discharge port 119 in the Y-axis direction in the figure constant, while reducing the length of the first discharge port 119 in the X-axis direction in the figure to the first discharge port 119 . A gradual shortening towards the outlet 119 reduces the cross-sectional area. The flow velocity of the first water 301 when discharged from the first discharge port 119 is faster (that is, greater) than the flow velocity of the first water 301 when passing through the first channel 111 due to the first throttle portion 391 . ing. Further, the flow velocity when discharged from the first outlet 119 is faster than the flow velocity of the fourth water 304 when discharged from the second outlet 120, which will be described later.

The injection port 112 is an opening located at the second end on the downstream side of the branch water channel 122 through which the second water 302, which is the other side of the water that has passed through the main channel 121 and is branched at the branch portion 117, is located. 302 is opened toward the injection space portion 123 where the nozzle 302 is injected. A normal 112n to the discharge surface 102 of the orifice 112 (ie, the straight line with the arrow at one end thereof in FIG. 4) intersects the inlet surface 105 of the return loop flow path inlet 104 . An inflow port 126 and a branching portion 117 are located at a first end on the upstream side of the branch channel 122 . In the case of this embodiment, the inflow port 126 includes a second narrowed portion 392 whose cross-sectional area decreases in the direction from the branch portion 117 toward the branch channel 122 . The second narrowed portion 392 communicates with the branch water channel 122 and increases the flow velocity of the second water 302 branched from the main channel 121 .

The injection space part 123 is a part forming a space in which the second water 302 injected from the injection port 112 flows so as to fly. In the case of the present embodiment, the second water 302 injected from the injection port 112 contacts at least one of the inner surfaces of the injection space 123 arranged in the width direction (the Y-axis direction in the drawing). The surface perpendicular to the direction in which the water 302 is jetted has an inner surface shape that allows the second water 302 to fly without contact in the direction perpendicular to the width direction.

The second water 302 that is jetted from the jetting port 112 and flows in the jetting space 123 collides with the direction changing part 114 . This is the portion that is changed to the direction toward the third water 303 . Although the second water 302 and the third water 303 flow in different directions, they are a series of water flows. In the case of this embodiment, the direction changing part 114 gradually moves toward the upstream side of the second water 302 from the return loop flow path 115 side to the opposite side beyond the collision part with respect to the part where the second water 302 collides. Curved or slanted to face. In the case of this embodiment, the direction changing portion 114 has a curved plate surface shape, and is arranged so that the tangent line of the curved surface is slightly inclined with respect to the flow direction of the second water 302 . The redirecting portion 114 has an edge portion 124 on the opposite side of the return loop channel 115 . The edge portion 124 functions as a boundary separating the return loop channel 115 and the second channel 116 .

In the return loop flow path 115, the second water 302 that has been injected from the injection port 112 into the injection space portion 123 and before colliding with the direction changing portion 114 intersects with the third water 303 that has passed through the return loop flow path 115. It is a channel having a return loop channel outlet 113 at its end arranged to. In the case of this embodiment, the return loop channel 115 has a smoothly curving track shape (that is, an oval shape) so that the flow velocity of the flowing third water 303 does not drop. The return loop flow path discharge port 113 is arranged so close to the injection port 112 that it can be considered to be in contact with it. The shape of the return loop channel 115 may be elliptical, circular, or the like.

In the second flow path 116 , the second water 302 and the third water 303 are mixed with the second water 302 that is diverted away from the return loop flow path 115 by the third water 303 discharged from the return loop flow path discharge port 113 . It is a channel through which the fourth water 304 flows. The second flow path 116 is arranged downstream of the direction changing portion 114 in the flow direction of the third water 303 discharged from the return loop flow path discharge port 113 . The second flow path 116 has a receiving port 125 for receiving the fourth water 304 at a first end on the upstream side, and a second discharge port 120 for discharging the fourth water 304 at a second end on the downstream side.

The receiving port 125 is arranged adjacent to the return loop channel 115 with the edge portion 124 of the direction changing portion 114 interposed therebetween. A first imaginary line 331 connecting the outlet 112 of the branch channel 122 and the return loop channel inlet 104 intersects a second imaginary line 332 connecting the return loop channel outlet 113 and the receiving port 125 together.

In this embodiment, as shown in FIG. 4, the normal line 112n of the discharge surface of the injection port 112 intersects the inlet surface 105 of the return loop channel inlet 104. As shown in FIG. FIG. 12 is a cross-sectional view of a nozzle not included in this embodiment. In FIG. 12, the normal 112n of the discharge surface of the orifice 112 does not intersect the inlet surface 105 of the return loop flow path inlet 104. In FIG. Therefore, in the form shown in FIG. 12 , the second water 302 flows through the second flow path 116 without entering the return loop flow path 115 after passing through the injection port 112 . Note that the position of inlet face 105 shown in FIG. 12 is different than the position of inlet face 105 shown in FIG.

At least part of the second water 302 (preferably all of the second water 302 ) whose flight direction is not changed by the third water 303 collides with the direction changing part 114 . As a result, the second water 302 enters the return loop channel 115 efficiently.

The second discharge port 120 is arranged adjacent to the first discharge port 119 so that the first water 301 and the fourth water 304 discharged from the first discharge port 119 merge. The second outlet 120 has an expanded portion 393 whose cross-sectional area gradually increases downstream of the fourth water 304 passing through the second flow path 116 (that is, toward a confluence outlet 127 described later). Equipped with Specifically, in the expanded portion 393, the length of the second outlet 120 in the Y-axis direction in the figure is constant, while the length of the second outlet 120 in the X-axis direction in the figure gradually increases. ing. In other words, the cross-sectional area of the expanded portion 393 gradually increases from the receiving port 125 toward the second discharge port 120 . As a result, the flow velocity of the fourth water 304 when discharged from the second outlet 120 is slower than the flow velocity of the fourth water 304 when passing through the second flow path 116 . Further, the flow velocity of the fourth water 304 when discharged from the second discharge port 120 is slower than the flow velocity of the first water 301 when discharged from the first discharge port 119 .

In the case of the present embodiment, the nozzle 110 has a confluence discharge port 127 that merges and discharges the first water 301 discharged from the first discharge port 119 and the fourth water 304 discharged from the second discharge port 120. I have. This stabilizes the discharge direction of the first water 301 and the fourth water 304 that have merged.

Next, how intermittent water flow is generated in the space by the water discharged from the nozzle 110 will be described in order with reference to FIGS. 5 to 9. FIG. As shown in FIG. 5, in the first stage, water entering from the water inlet 118 branches at the branching portion 117 to become the first water 301, passes through the first flow path 111, and continuously flows through the first outlet. It is discharged from 119 while being accelerated.

On the other hand, in the first stage, as shown in FIG. 6, the second water 302 branched at the branching portion 117 passes through the branching water channel 122 while being accelerated at the inlet 126, and flows from the injection port 112 to the injection space portion 123. Injected inside.

Next, in the second stage, the second water 302 collides with the direction changing part 114 and enters the return loop channel 115 as shown in FIG. go. Furthermore, in the third stage, when the return loop flow path 115 is filled, as shown in FIG. The direction of the third water 303 is changed, and the fourth water 304 in which the second water 302 and the third water 303 are mixed enters the receiving port 125 .

Finally, in the fourth stage, the fourth water 304 entering through the receiving port 125 is slower than the first water 301 coming out of the second outlet 120 through the first outlet 119 as shown in FIG. It is discharged while being decelerated like this. The fourth water 304 is discharged until the third water 303 filling the return loop flow path 115 is exhausted.

On the other hand, when the third water 303 filling the return loop flow path 115 disappears, as shown in FIG. 114 and changes direction, filling the return loop flow path 115 as third water 303 .

By repeating the first to fourth steps described above, a first state in which the first water 301 is discharged from the joint discharge port 127 and the fourth water 304 is not discharged, and the first water 301 and the fourth water 304 and the second state in which both are discharged from the confluence discharge port 127 are alternately repeated.

FIG. 10 is a diagram showing a first state of the water flow in the space discharged from the nozzle. FIG. 11 is a diagram showing a second state of the water flow in the space discharged from the nozzle. The first flying water 311 shown in these figures is water in the first state in which only the first water 301 is discharged into the air from the joint discharge port 127 . The second flying water 312 is water in the second state in which both the first water 301 and the fourth water 304 are discharged from the joint discharge port 127 . The flow velocity of the first flying water 311 is faster than the flow velocity of the second flying water 312 . As a result, as shown in FIG. 11, the first flying water 311 separates from the following second flying water 312 and joins with the preceding second flying water 312 to form a mass of water, resulting in an intermittent water flow.

According to the sanitary washing device 100 having the nozzle 110 described in the above embodiment, it is possible to alternately discharge water with different flow velocities without requiring a mechanical operation to form water droplets that fly intermittently in space. can. As a result, it is possible to continuously heat the tap water, use water having a temperature suitable for the private parts of the human body, and intermittently spray water to the private parts without using a pump.

It should be noted that the present invention is not limited to the above embodiments. For example, another embodiment realized by arbitrarily combining the constituent elements described in this specification or omitting some of the constituent elements may be an embodiment of the present invention. The present invention also includes modifications obtained by making various modifications to the above-described embodiment within the scope of the gist of the present invention, that is, the meaning of the words described in the claims, which a person skilled in the art can think of. be

For example, the cross-sectional shape of each water channel and the shape of the opening arranged at the end of the water channel are not limited to the shapes described in the above embodiments, and may be circular.

Moreover, although the case where the hot water generated by one heating device 140 is branched by the branching unit 117 has been described, the first water 301 and the second water 302 separately heated by the plurality of heating devices are transferred to the first flow path. 111 and the branch water channel 122 may be supplied separately.

Moreover, the molding method of the nozzle 110 is not particularly limited, and injection molding, molding by a 3D printer, and the like can be exemplified.

INDUSTRIAL APPLICABILITY The nozzle and the intermittent water stream generation method according to the present invention can be applied not only to sanitary washing devices, but also to devices that discharge intermittently flying water.

Inventions derived from the above disclosure are described below.

1. A sanitary washing device 100 comprising a nozzle 110 for discharging water toward the private parts of a seated human body,
The nozzle 110 is
a water inlet 118 through which water supplied to the nozzle 110 passes;
a main flow path 121 provided inside the nozzle 110;
a branching portion 117 provided inside the nozzle 110;
a first channel 111 provided inside the nozzle 110;
a first ejection port 119 provided inside the nozzle;
an inlet 126 provided inside the nozzle;
a branch channel 122 provided inside the nozzle;
injection port 112 provided inside the nozzle
a return loop channel 115 provided inside said nozzle;
an injection space portion 123 provided inside the nozzle;
a receiving port 125 provided inside the nozzle;
a second channel 116 provided inside the nozzle;
A second outlet 120 provided inside the nozzle, and a merged outlet 127 provided on the outer peripheral surface of the nozzle
and
The water inlet 118 is provided at the first end of the main flow path 121,
The branch portion 117 is located at the second end of the main flow path 121,
Water is supplied to the inside of the nozzle 110 through the water inlet 118,
The water that has passed through the water inlet 118 flows through the main flow path 121 and reaches the branch portion 117,
The branch portion 117 is located at the first end of the first flow path 111,
The first discharge port 119 is located at the second end of the first flow path 111,
A part of the water that reaches the branching portion 117 is branched so as to flow into the first flow path 111 as the first water 301,
The first flow path 111 has a first narrowed portion 391 whose cross-sectional area decreases in the direction from the branch portion 117 toward the first discharge port 119,
The first water 301 is discharged from the first discharge port 119 in a state in which the flow velocity of the first water 301 is increased by the first throttle portion 391,
The inflow port 126 and the branch portion 117 are located at the first end of the branch channel 122,
The injection port 112 is located at the second end of the branch channel 122,
Part of the water that reaches the branching portion 117 is branched so as to flow into the branching channel 122 as the second water 302,
The inflow port 126 has a second narrowed portion 392 whose cross-sectional area decreases in the direction from the branch portion 117 toward the injection port 112,
The second water 302 is ejected from the ejection port 112 while the flow velocity of the second water 302 is increased by the second throttle portion 392,
The injection space portion 123 is formed integrally with the return loop flow path 115,
The receiving port 125 is located at the first end of the second channel 116,
The second outlet 120 is located at the second end of the second flow path 116,
said return loop channel 115 having a return loop channel inlet 104 and a return loop channel outlet 113;
A normal line 112n of the discharge surface of the injection port 112 intersects the inlet surface of the return loop flow path inlet 104,
a first imaginary line 331 connecting the injection port 112 and the return loop channel inlet 104 intersects a second imaginary line 332 connecting the return loop channel outlet 113 and the receiving port 125;
The second water ejected from the ejection port 112 travels in a direction parallel to the normal line 112n of the ejection surface of the ejection port 112, passes through the inlet surface of the return loop flow path inlet 104, and passes through the return loop flow path. entering the channel 115 as the third water 303,
The third water 303 entering the return loop flow path 115 is discharged from the return loop flow path discharge port 113 into the injection space 123,
The third water 303 discharged from the return loop flow path discharge port 113 into the injection space portion 123 passes through the receiving port 125 and flows into the second flow path 116 as the fourth water 304,
The second flow path 116 has an expanded portion 393 whose cross-sectional area increases from the receiving port 125 toward the second discharge port 120,
The fourth water 304 is discharged from the second discharge port 120 in a state where the flow velocity of the fourth water 304 is reduced by the expansion part 393,
The flow velocity of the first water 301 discharged from the first discharge port 119 is higher than the flow velocity of the fourth water 304 discharged from the second water discharge port 120, and the confluence discharge port 127 communicates with the first outlet 119 and the second outlet 120,
In the sanitary washing device 100, during operation, i.e., while water is supplied to the nozzle 110 via the water inlet 118,
A first discharge state in which the first water 301 discharged from the first discharge port 119 is discharged from the merged discharge port 127, but the fourth water 304 is not discharged from the first discharge port 119; A second discharge state is repeated in which the first water 301 and the fourth water 304 discharged from the second discharge port 120 join together and are integrally discharged from the merged discharge port 127 .

100 Sanitary washing device 102 Discharge face 104 Return loop channel inlet 105 Inlet face 109 Control device 110 Nozzle 111 First channel 112 Injection port 112n Normal line 113 Return loop channel outlet 114 Direction changing part 115 Return loop channel 116 Second Channel 117 Branch 118 Water inlet 119 First outlet 120 Second outlet 121 Main channel 122 Branch water channel 123 Injection space 124 Edge 125 Receptacle 126 Inlet 127 Combined outlet 140 Heating device 141 Buffer tank 180 Water circuit 181 Water supply connection port 182 Strainer 183 Water stop solenoid valve 184 Pressure reducing valve 185 Vacuum breaker 186 Flow control valve 187 Branch member 188 Vent pipe 190 Toilet seat 200 Toilet bowl 301 First water 302 Second water 303 Third water 304 Fourth water 311 First Flying water 312 Second flying water 331 First virtual line 332 Second virtual line 391 First narrowed portion 392 Second narrowed portion 393 Extended portion 500 Nozzle main body

Claims (8)

A sanitary washing device comprising a nozzle for discharging water toward the private parts of a seated human body,
The nozzle is
a water inlet through which water supplied to the nozzle passes;
a main flow path provided inside the nozzle;
a branch provided inside the nozzle;
a first channel provided inside the nozzle;
a first ejection port provided inside the nozzle;
an inlet provided inside the nozzle;
a branch water channel provided inside the nozzle;
an injection port provided inside the nozzle;
a return loop channel provided within the nozzle;
an injection space provided inside the nozzle;
a receiving port provided inside the nozzle;
a second flow path provided inside the nozzle;
a second ejection port provided inside the nozzle,
The water inlet is provided at a first end of the main flow path,
The branching portion is located at the second end of the main flow path,
The branching portion is located at the first end of the first flow path,
The first discharge port is located at the second end of the first flow path,
The inflow port and the branch portion are located at a first end of the branch channel,
The injection port is located at the second end of the branch channel,
The receiving port is located at the first end of the second channel,
The second outlet is located at the second end of the second flow path,
the return loop channel has a return loop channel inlet and a return loop channel outlet;
a normal line of the ejection surface of the injection port intersects the inlet surface of the return loop flow passage inlet;
A first virtual line connecting the injection port and the return loop channel inlet intersects a second virtual line connecting the return loop channel outlet and the receiving port. The first flow path is
2. The sanitary washing device according to claim 1, further comprising a first narrowed portion having a cross-sectional area that decreases in a direction from said branch portion toward said first discharge port. In the second channel,
The sanitary washing device according to claim 1 or 2, further comprising a cross-sectional area increasing portion whose cross-sectional area increases from the receiving port toward the second discharge port. The inlet is
A second narrowed portion having a cross-sectional area that decreases in a direction from the branch portion toward the branch channel,
A sanitary washing device according to any one of claims 1 to 3. The sanitary washing device according to any one of claims 1 to 4, further comprising a confluence outlet that communicates with the first outlet and the second outlet. The return loop flow path is
comprising a direction changing part,
The sanitation according to any one of claims 1 to 5, wherein the direction changing part is curved so that the direction of the flow of water jetted from the injection port is smoothly changed by the direction changing part. cleaning equipment. a water inlet through which water supplied to the nozzle passes;
a main flow path provided inside the nozzle;
a branch provided inside the nozzle;
a first channel provided inside the nozzle;
a first ejection port provided inside the nozzle;
an inlet provided inside the nozzle;
a branch water channel provided inside the nozzle;
an injection port provided inside the nozzle;
a return loop channel provided within the nozzle;
an injection space provided inside the nozzle;
a receiving port provided inside the nozzle;
a second flow path provided inside the nozzle;
a second ejection port provided inside the nozzle,
The water inlet is provided at a first end of the main flow path,
The branching portion is located at the second end of the main flow path,
The branching portion is located at the first end of the first flow path,
The first discharge port is located at the second end of the first flow path,
The inflow port and the branch portion are located at a first end of the branch channel,
The injection port is located at the second end of the branch channel,
The receiving port is located at the first end of the second channel,
The second outlet is located at the second end of the second flow path,
the return loop channel has a return loop channel inlet and a return loop channel outlet;
a normal line of the ejection surface of the injection port intersects the inlet surface of the return loop flow passage inlet;
A first virtual line connecting the injection port and the return loop flow channel inlet intersects a second virtual line connecting the return loop flow channel outlet and the receiving port. Discharging the first water from the first discharge port provided at the end of the first flow path,
Injecting the second water from the injection port,
causing the second water jetted from the jet nozzle to collide with a direction changing part to change the flow direction to form the third water;
guiding the third water through a return loop flow path to a return discharge port arranged so that the second water and the third water intersect;
In the flow direction of the third water discharged from the return discharge port, the direction of flow of the third water discharged from the return discharge port is changed in the receiving port arranged downstream of the direction changing portion. receiving the fourth water in which the second water and the third water are mixed,
The fourth water received in the receiving port is guided through a second flow path, and the fourth water is introduced from a second discharge port provided at the end of the second flow path so as to join the first water. Discharged intermittent water flow generation method.

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