JP5754588B2 - Water discharge device - Google Patents

Description

  The present invention relates to a water discharge device.

  A water discharge device for cleaning a human body is required to enhance the feeling of cleaning. The feeling of washing is a feeling that depends on the feeling of stimulation and the feeling of volume when the water discharged from the water discharging device hits the human body. Applying the feeling of stimulation and volume to the properties of the discharged water, the feeling of stimulation is a physical quantity typified by the flow rate of water, and volume is the area of water that hits the human body (the cross-sectional area of water just before hitting the human body). Is a physical quantity represented by In other words, the sense of irritation is the intensity of water irritation felt by the user according to the flow rate of water. The irritation feeling increases as the flow rate of water increases, and the irritation feeling increases as the flow rate of water decreases. It becomes weak. The amount of water is the amount of water that the user feels depending on the area of water that hits the human body. The larger the water area, the stronger the volume, and the smaller the water area, the weaker the volume. Is.

  On the other hand, the water discharger is also required to further improve water saving performance. To improve water-saving performance, it is necessary to reduce the amount of water discharged from the water discharge device, but simply reducing the amount of water discharged will reduce the sense of volume, which is unsatisfactory. There is a possibility that the number of users to be held increases.

  Therefore, a technique has been proposed in which continuous linear water discharge is converted into water discharge by intermittent water masses, thereby ensuring an area of water that hits the human body while maintaining a low water volume, and not impairing the sense of volume. As an example of this technique, the thing of the following patent document 1 is proposed. In the technique described in Patent Document 1 below, the first portion having a high injection speed and the second portion having a low injection speed are alternately formed in the water discharge, and the first portion catches up with the second portion before landing on the human body. , Forming a large water mass. In the technique described in Patent Document 1 below, in order to form such a speed difference, it is used to intermittently apply a pressure higher than the water supply pressure to the water discharge device to greatly change the water discharge pressure. . By changing the water discharge pressure greatly in this way, intermittent flow velocity fluctuations occur in the water discharge, so that the water discharge by the intermittent water mass as described above is realized.

  Although the technique described in Patent Document 1 below is an excellent technique for reliably realizing water discharge by intermittent water masses, a relatively large pump is required to apply a pressure higher than the water absorption pressure. Become. If such a relatively large pump is indispensable, the entire water discharge device becomes expensive, which may lead to an increase in the size of the device.

  As a technique for periodically changing the flow rate of discharged water without using a pump, a technique described in Patent Document 2 below has been proposed. In Patent Document 2 below, fluctuations in the flow rate of the discharged water are caused by mixing bubbles in the discharged water. According to the description in this document, in a portion where the amount of air mixed as bubbles in the cleaning water is larger, the speed of the cleaning water in that portion becomes higher. On the other hand, in a portion where the amount of air mixed as bubbles in the wash water is smaller, the speed of the wash water in that portion becomes lower. Thereby, repetition of a high-speed part and a low-speed part arises in water discharge.

JP 2001-90151 A Japanese Patent No. 4572999

  The technique described in Patent Document 2 is capable of causing fluctuations in the flow rate of discharged water without using a pump. By using fluctuations in the flow rate due to mixing of bubbles, the water-saving effect and the feeling of cleaning can be improved. Are compatible. However, as a result of studies by the present inventors, it is possible to mix small bubbles having a relatively small diameter with the technique described in Patent Document 2, and the fluctuation in flow rate due to such small bubbles is very large. Rather, it turned out that no large water mass was formed as a result. More specifically, since the flow velocity fluctuation is small, it takes a long time for the water discharge portion having a relatively high speed to catch up with the water discharge portion having a relatively low speed, and a water mass is required to reach the target human body. May not grow sufficiently.

  The present invention has been made in view of such problems, and its purpose is to provide a sufficiently large flow rate fluctuation to the water discharge without using a large pump, and when the distance from the water discharge to the water landing is short Even so, an object of the present invention is to provide a water discharging device capable of forming a sufficiently large water mass.

  In order to solve the above problems, a water discharge device according to the present invention is a water discharge device that discharges water toward a human body, and a water supply channel that supplies water, and water that is supplied from the water supply channel is directed downstream. An injection port for injecting as a jet flow, a discharge port provided on the downstream side of the injection port, for discharging the jet flow to the outside, and provided between the injection port and the discharge port. A water passage portion that is a passage through which a jet that reaches the outlet passes, a water reservoir portion that forms a water reservoir adjacent to the water passage portion, and foams air in the water passage portion. Bubble supply means for supplying the generated bubbles. The bubble supply means of the present invention has an air introduction port for introducing air into the water reservoir, and a bubble retention unit for allowing the air introduced from the air introduction port into the water reservoir to grow in a bubble shape over time. When the bubbles reach a predetermined size, the bubbles are supplied as large bubbles to the water flow path unit, and a plurality of bubbles formed by the air introduced from the air introduction port are supplied to the bubble retention unit. The first state that temporarily stops and combines the plurality of temporarily stopped bubbles into a large bubble, and the bubble as a large bubble when the plurality of bubbles are combined to a predetermined size The second state that is supplied from the stopping part to the water passage part is alternately and repeatedly generated.

  According to the present invention, in the first state, the plurality of bubbles formed by the air introduced from the air inlet are temporarily retained in the bubble retention portion, and the plurality of bubbles temporarily retained are combined. Bubbles formed by air introduced from the air inlet can be gathered and grown by surface tension. On the other hand, in the second state, when a plurality of bubbles are combined and become a predetermined size, they are supplied as large bubbles from the bubble retaining part to the water passage part, so that the large bubbles grown in the first state pass through. Can be supplied to the water path. By alternately and repeatedly generating such a first state and a second state, it is possible to alternately generate a period in which large bubbles are not supplied to the jet and a period in which large bubbles are supplied to the jet. During the period when the large bubbles are supplied to the jet, the jet is discharged at a relatively high speed. On the other hand, during a period when large bubbles are not supplied to the jet, the jet is discharged at a relatively low speed. Therefore, by alternately and repeatedly generating the first state and the second state, it is possible to greatly change the speed of the jet flow toward the discharge port and to give a large flow rate fluctuation to the water discharge, and the distance from the water discharge to the water landing is Even in a short case, a sufficiently large water mass can be formed.

  Further, in the water discharge device according to the present invention, the bubble supply means separates the plurality of bubbles formed by the air introduced from the air introduction port from the secondary water flow formed in the water reservoir as a flow different from the jet flow. It is also preferable to have a bubble separation means that guides to the bubble retention part.

  Even if it is a sub-water flow formed in the water reservoir as a flow different from the jet, if it approaches the jet while flowing in the water reservoir, it is drawn into the vicinity of the jet. Therefore, in a state where a plurality of bubbles are included in the substream, the plurality of bubbles cannot be collected and grown. Therefore, in this preferred embodiment, since the bubble separating means for separating the plurality of bubbles from the subsidiary water stream is provided, the plurality of bubbles can be separated from the subsidiary water stream and reliably grown.

  Further, in the water discharge device according to the present invention, the bubble supply means is a flow different from the jet flow and the auxiliary water flow so that the plurality of bubbles separated from the auxiliary water flow by the bubble separation means remain in the bubble retention portion. It is also preferable to form a stationary water flow in the bubble retaining part.

  In this preferred embodiment, the stationary water flow is formed as an independent flow different from the jet flow and the sub-water flow in the bubble retention portion, so that the bubbles are included in the stationary water flow to eliminate the influence of the jet flow and the sub-water flow. Can remain in the bubble retention part.

  Further, in the water discharge device according to the present invention, the bubble supply means is configured so that when a plurality of bubbles temporarily retained in the bubble retention unit are combined into a large bubble of a predetermined size, the bubble retention unit It is also preferable to supply the water flow path part by overflowing.

  In this preferred embodiment, the plurality of bubbles collected in the bubble retaining portion can be retained in the bubble retaining portion until the bubbles are combined and become a predetermined size, while the plurality of collected bubbles are When the large bubbles having a predetermined size are combined, the large bubbles can be supplied to the water passage portion by overflowing from the bubble retaining portion. Therefore, the first state and the second state can be switched using the bubble overflow phenomenon from the bubble retaining portion.

  Further, in the water discharge device according to the present invention, the bubble separation means separates the plurality of bubbles from the sub-water flow by buoyancy acting on the plurality of bubbles, and the bubble retention portion is a portion of the water reservoir. It is also preferred that it be provided adjacent to the upper wall.

  In this preferred embodiment, since the plurality of bubbles are separated from the auxiliary water stream using the naturally generated force called buoyancy acting on the plurality of bubbles, the bubbles can be separated with a simple configuration. In addition, since the bubble retaining portion is provided adjacent to the upper wall, it is possible to collect bubbles using the phenomenon that bubbles separated by buoyancy rise to the maximum.

  Further, in the water discharge device according to the present invention, the bubble separation means separates the plurality of bubbles by a centrifugal force generated by swirling the sub-water flow, and the bubble retention portion includes the sub-water flow. It is also preferable to be provided in the vicinity of the turning center inside the turning track.

  In this preferred embodiment, the bubbles are separated by the centrifugal force generated as a result of swirling the auxiliary water flow, and the bubbles are collected and grown at the bubble retaining portion provided in the vicinity of the swirling center. The bubbles can be separated and collected from the side stream.

  According to the present invention, a sufficiently large flow rate fluctuation can be given to water discharge without using a large pump, and a sufficiently large water mass can be formed even when the distance from water discharge to water landing is short. A possible water discharge device can be provided.

It is a schematic perspective view which shows the water discharging apparatus which concerns on embodiment of this invention. It is a figure which shows typically the water discharging state of the water discharging apparatus shown in FIG. It is a figure which shows typically schematic structure of the water storage chamber which the water discharging apparatus shown in FIG. 1 has. It is a figure which shows the AA cross section of FIG. It is a figure which shows the BB cross section of FIG. It is a figure for demonstrating the aspect which supplies a bubble to a jet flow in the water reservoir chamber shown in FIG. It is a figure which shows CC cross section of FIG. It is a figure which expands and shows the D area | region of FIG. It is a figure for demonstrating the aspect which supplies a bubble to a jet flow in the water reservoir chamber shown in FIG. It is a figure for demonstrating the aspect which supplies a bubble to a jet flow in the water reservoir chamber shown in FIG. It is a figure which expands and shows F area | region of FIG. It is a figure which shows the EE cross section of FIG. It is a figure for demonstrating the aspect which supplies a bubble to a jet flow in the water reservoir chamber shown in FIG. It is a figure for demonstrating the aspect which supplies a bubble to a jet flow in the water reservoir chamber shown in FIG. It is a figure which shows the GG cross section of FIG. It is a figure which shows the photograph which copied the state which actually supplies a bubble to a jet flow in the water reservoir chamber shown in FIG. It is a figure which shows the modification which forms a subwater flow in a water reservoir. It is a figure for demonstrating the transition of the flow method of a substream in the modification shown in FIG. It is a figure which shows the modification which forms a subwater flow in a water reservoir. It is a figure which shows the modification of the system which grows a bubble in a water reservoir chamber. It is a figure which shows the modification of the system which grows a bubble in a water reservoir chamber. It is a figure which shows the modification of the system which grows a bubble in a water reservoir chamber.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  The water discharging apparatus which is embodiment of this invention is demonstrated. The water discharge device according to the present invention discharges water toward the human body and can give a sufficiently large flow rate fluctuation to the water discharge without using a large pump, and the distance from the water discharge to the water landing is short. Even in such a case, a sufficiently large water mass can be formed. Therefore, the application range of the water discharge device according to the present invention is wide-ranging, and it is possible to land the water discharge in the form of a water mass on the human body, which can achieve both a water-saving effect and an improved feeling of cleaning. It can be applied to things. In the description of the present embodiment, an example in which the water discharge device of the present invention is applied as a device that performs local cleaning of a human body will be described. In view of the gist of the present invention, the water discharge device according to the present invention is not limited to this.

  As shown in FIG. 1, a local cleaning device WA as a water discharge device according to an embodiment of the present invention is used on a toilet CB. The local cleaning device WA includes a main body WAa, a toilet seat WAb, a toilet lid WAc, and a remote controller WAd. The main body WAa has a nozzle NZ, and holds the nozzle NZ so as to freely advance and retract. The main body WAa rotatably holds the toilet seat WAb and the toilet lid WAc.

  At the time of use, the user rotates the toilet lid WAc upward as shown in FIG. 1 to expose the toilet seat WAb. After the user sits on the toilet seat WAb and uses the stool, the user operates the remote controller WAd to discharge water from the discharge port NZa formed in the nozzle NZ, and cleans the local area of the user. After the local cleaning, the user operates the remote controller WAd to stop water discharge from the discharge port NZa. Thereafter, the user operates the remote controller WAd to flow the washing water into the toilet CB.

  In this embodiment, as shown in FIG. 1, a J axis along the traveling direction of the water discharge JW and a V axis along the vertical direction are set, and the local cleaning device WA is used while using the J axis and the V axis. The water discharge mode will be described.

  FIG. 2 schematically shows the water discharge state of the local cleaning device WA shown in FIG. In this embodiment, without using a large-sized pump, it is comprised so that the amount of water discharged may be fluctuate | varied periodically and a big water mass may collide with a water discharge target site | part. In general, when the amount of water discharged changes pulsatically and the amount of water periodically changes, the flow velocity changes similarly and changes pulsatically. Therefore, when the amount of water discharged becomes the maximum flow rate, the flow velocity also becomes the maximum velocity, and the instantaneous flow velocity and flow rate vary with time.

  When fluctuations in the amount of water discharged and the flow velocity occur as described above, as shown in FIG. 2A, the discharged water JW includes the part Wp1, the part Wp2, the part Wp3, the part Wp4, and the part Wp5. The amount of each part is such that part Wp1 (≈part Wp5) <part Wp2 (≈part Wp4) <part Wp3. Assuming that the flow velocities of the part Wp1, the part Wp2, the part Wp3, the part Wp4, and the part Wp5 are V1, V2, V3, V4, and V5, V1 (≈V5) <V2 (≈V4) <V3.

  Therefore, since the speed of the part Wp3 is higher than the part Wp2 as it moves from (A) to (C) in FIG. 2 immediately after water discharge, the part Wp3 merges with the part Wp2 and further merges with the part Wp1 to generate a large amount of water. It becomes a lump.

  Thus, the part Wp3 having the maximum flow velocity is sequentially combined with the part Wp2 and the part Wp1 in front of the part, thereby forming a large lump and landing on the human body part. When this washing water hits a human body part, it is in a water mass state with a large collision energy (washing strength). Since the flow velocity V3 of this part Wp3 is the maximum flow velocity, the wash water discharged by the pulsating flow is discharged from the discharge port NZa in a form of water discharge such that the combined water mass appears every pulsation cycle. Will be. In addition, since such a phenomenon occurs in the pulsation cycle, the water mass that has passed through the coalescence of the maximum flow velocity portion Wp3 as described above repeatedly appears, and the water mass at a certain water discharge timing and the portion Wp3 at the next water discharge timing. Water is discharged at almost the same speed as the water mass that has undergone coalescence. In addition, each of these water masses is in a state of being connected by the parts Wp4 and Wp5 discharged after the part Wp3 at the maximum flow velocity.

  The local cleaning device WA according to the present embodiment changes the flow rate of discharged water without using a large pump, and discharges water using the water mass that appears repeatedly as described above. The local cleaning device WA has a water reservoir chamber 10 on the upstream side of the discharge port NZa of the nozzle NZ shown in FIG. The local cleaning device WA according to the present embodiment changes the flow rate of discharged water by supplying air bubbles through the water reservoir 10. The configuration of the water reservoir 10 will be described with reference to FIG. FIG. 3 is a diagram schematically showing a schematic configuration of the water storage chamber 10.

  As shown in FIG. 3, the water storage chamber 10 includes an air pipe 101, a first water supply pipe 102 (water supply path), a discharge pipe 103, and a second water supply pipe 104. The air pipe 101, the first water supply pipe 102, the discharge pipe 103, and the second water supply pipe 104 are pipes provided so as to communicate with the inside of the water reservoir chamber 10.

  The air duct 101 communicates with the interior of the water reservoir 10 via an air inlet 10 a formed in the water reservoir 10. The first water supply pipe line 102 communicates with the inside of the water reservoir chamber 10 through the injection port 10b. The discharge pipe line 103 communicates with the inside of the water reservoir chamber 10 through the water reservoir chamber side opening 10c. The second water supply conduit 104 communicates with the interior of the water reservoir 10 via the auxiliary water flow inlet 10d.

  The air pipe 101 is a pipe connecting the air inlet 10a and the opening opened to the atmosphere. Air introduced from the air duct 101 is drawn into the water reservoir 10 from the air inlet 10a. The air drawn into the water reservoir 10 forms bubbles BA.

  The 1st water supply pipe line 102 is a pipe line which connects the injection opening 10b and a water supply source. The first water supply pipeline 102 is reduced in diameter in the middle of the pipeline or at the injection port 10b. Therefore, the speed of the water supplied from the first water supply pipe line 102 is increased, and the water is injected into the water reservoir 10 as the jet WSm.

  The discharge pipe 103 is a pipe connecting the water reservoir chamber side opening 10c and the discharge port NZa formed in the nozzle NZ (see FIG. 1). In the case of this embodiment, the injection port 10b and the water reservoir chamber side opening 10c are arranged to face each other. Accordingly, the jet WSm injected from the injection port 10b into the water reservoir chamber 10 travels along the J axis in the water reservoir chamber 10 and enters the discharge conduit 103 from the water reservoir chamber side opening 10c. The water that has entered the discharge conduit 103 travels along the J axis along the discharge conduit 103 and is discharged from the discharge port NZa to the outside.

  The second water supply pipe 104 is a pipe that connects the auxiliary water flow inlet 10d and the water supply source. The second water supply conduit 104 communicates with the interior of the water reservoir 10 via the auxiliary water flow inlet 10d. At least a part of the water supplied from the second water supply conduit 104 forms a side water flow WSs that is a swirling flow in the water reservoir 10.

  As described above, the jet WSm injected from the injection port 10b into the water reservoir 10 travels along the J axis in the water reservoir 10 and enters the discharge pipe 103 from the water reservoir chamber side opening 10c. Therefore, the water flow path part 105 which is a path | route through which the jet flow WSm from the injection port 10b to the discharge port NZa passes is formed. In the case of this embodiment, the water flow path part 105 is a path | route which connects the injection port 10b and the water reservoir room side opening 10c.

  The remaining area of the water reservoir chamber 10 excluding the water flow path portion 105 is a water reservoir portion 106. The water reservoir 106 is a part for forming the water PW adjacent to the water flow path portion 105. In the case of this embodiment, the water reservoir 106 is formed so as to surround the water flow path portion 105.

  In the case of this embodiment, the injection port 10b and the water reservoir chamber-side opening 10c are disposed close to one side of the water reservoir chamber 10 that is rectangular. On the other hand, the air inlet 10a and the auxiliary water inlet 10d are disposed close to the other side of the rectangular water reservoir chamber 10. Therefore, the injection port 10b and the water reservoir chamber side opening 10c, the air introduction port 10a, and the auxiliary water flow introduction port 10d are spaced apart.

  FIG. 4 shows the AA cross section of FIG. 3, and FIG. 5 shows the BB cross section of FIG. In the state shown in FIG. 3, the jet WSm travels in the stored water PW, and is directed toward the water storage chamber side opening 10 c while receiving resistance from the stored water PW as shown in FIG. 4. The jet WSm that reaches the water reservoir chamber side opening 10c enters the discharge pipe 103, and proceeds in a state of being in contact with the inner wall surface of the discharge pipe 103 as shown in FIG.

  In the state shown in FIG. 3, the bubble BA is small. When time further advances from the state shown in FIG. 3, bubbles BA grow as shown in FIG. The bubble BA grows until its lower end approaches the jet WSm. Therefore, the region where the sub-water flow WSs can turn is narrower than the state shown in FIG. The sub-water flow WSs is swirling in a direction in which the swirl flow velocity is high and the flow of the jet WSm is not hindered. FIG. 7 shows a CC cross section of FIG. 6, and FIG. 8 shows a region D of FIG.

  As shown in FIG. 7, the bubble BA grows in contact with three of the four walls extending from the air introduction port 10a of the water reservoir chamber 10 toward the injection port 10b. Therefore, the surface in contact with the secondary water flow WSs is only the surface facing the secondary water flow inlet 10d.

  As shown in FIG. 8, buoyancy acts on the grown bubble BA in the V-axis direction which is the vertical direction. The auxiliary water stream WSs acts on the bubble BA so as to resist this buoyancy. Therefore, the bubble BA can maintain the state which contacted three walls of the four walls extended toward the injection port 10b from the air introduction port 10a of the water reservoir chamber 10. FIG.

  When the time further advances from the state shown in FIG. 6, the bubble BA approaches the jet WSm and begins to interfere as shown in FIG. The bubble BA is pulled by the jet WSm and enters the water flow path portion 105. Accordingly, the water that has entered the bubble BA is pushed away, and the swirling flow velocity of the sub-water flow WSs is increased. The sub-water flow WSs whose swirl velocity is increased will tear the bubbles BA.

  When time further advances from the state shown in FIG. 9, the bubble BA is completely drawn into the jet WSm as shown in FIG. 10, and the bubble BA exists over substantially the entire area of the water flow path portion 105. FIG. 11 shows a region F in FIG. 10, and FIG. 12 shows a cross section taken along line EE in FIG.

  As shown in (A) of FIG. 11, the bubbles BA exist over substantially the entire area of the water flow path portion 105, and thus exist up to the vicinity of the injection port 10 b. Therefore, the amount of water existing in the vicinity of the injection port 10b is reduced, and the generation of vortex in the vicinity of the injection port 10b is suppressed. When the bubble BA is formed at a position away from the injection port 10b, the state is as shown in FIG. In the state shown in FIG. 11B, there is a lot of water in the vicinity of the injection port 10b, and a lot of vortex is generated. Since the generation of the vortex becomes resistance to the progression of the jet WSm, the vortex is suppressed as shown in FIG. 11A, and the jet WSm can be directed toward the discharge port NZa without reducing the speed.

  As shown in FIG. 12, the jet WSm passes through the bubble BA. As the jet WSm penetrates the bubble BA in this way, the resistance around the jet WSm decreases, and the jet WSm can go to the discharge port NZa without reducing the speed. However, the state in which the jet WSm completely penetrates the bubble BA as illustrated in FIG. 12 is not indispensable, and it is only necessary that many portions around the jet WSm can be surrounded by the bubble BA. It may be in a state in contact with the water PW.

  When time further advances from the state shown in FIG. 10, as shown in FIG. 13, the bubble BA moves toward the discharge pipe 103 so as to be drawn into the jet WSm. Since the bubbles BA are formed so as to have a flow passage cross-sectional area wider than the water flow passage portion 105, they are directed toward the discharge pipe 103 while being caught on the outer periphery of the water reservoir chamber side opening 10c. The bubbles BA caught on the outer periphery of the water reservoir chamber side opening 10c in this way enter the discharge pipe 103 while being pushed in from behind by the jet WSm or pushed in by receiving pressure from the water PW. become.

  When the time further advances from the state shown in FIG. 13, the bubble BA enters the discharge pipe 103 as shown in FIG. 14. FIG. 15 shows a GG cross section of FIG. As shown in FIG. 15, when the bubble BA enters the discharge pipe 103, a film of air is formed along the inner wall of the discharge pipe 103, and the jet WSm travels in the film. Accordingly, the resistance received by the jet WSm from the inner wall of the discharge pipe 103 is reduced, and the jet WSm is directed to the discharge port NZa without being decelerated. However, the state in which the bubble BA is completely wrapped by the bubble BAm as illustrated in FIG. 15 is not indispensable, and it is only necessary to surround many portions around the jet WSm with the bubble BA. The state may be in contact with the discharge pipe 103.

  When the bubble BA further proceeds to the downstream side of the discharge pipe 103 from the state shown in FIG. 14, the next bubble BA is taken in from the air pipe 101 and returns to the state of FIG. In the present embodiment, the movement of the bubble BA as described with reference to FIGS. 3 to 15 is periodically repeated.

  FIG. 16 shows a photograph of a state in which water corresponding to the water reservoir 10 of the present embodiment was actually created and water was passed. FIG. 16A is a photograph of a state where the jet WSm travels in the pooled water PW and the bubble BA is growing, and corresponds to the state of FIG. FIG. 16B is a photograph of a state in which the jet WSm is traveling in the bubble BA, and corresponds to the state of FIG. FIG. 16C is a photograph of a state in which the jet WSm is traveling in the bubble BA, and corresponds to the state of FIG.

  As described above, the water discharge device according to the present embodiment is the local cleaning device WA, which discharges water toward the human body, and the first water supply pipe 102 which is a water supply channel for supplying water, and the first An injection port 10b that injects water supplied from the water supply pipe 102 toward the downstream side as a jet flow WSm, a discharge port NZa that is provided on the downstream side of the injection port 10b and discharges the jet flow WSm to the outside, and an injection port 10b Is formed between the nozzle 10a and the discharge port NZa, and is formed adjacent to the water flow path part 105 and the water flow path part 105 through which the jet flow WSm from the injection port 10b to the discharge port NZa passes. A water reservoir chamber 10 having a water reservoir portion 106 and an air inlet 10a that exhibits at least a part of the function of a bubble supply means for supplying bubbles BA in the form of air to the water flow path portion 105.

  The bubble supply means generates large bubbles BA having a cross-sectional area larger than the flow passage cross-sectional area of the injection port 10b when the inside of the water reservoir chamber 10 is viewed from the injection port 10b (see FIG. 12). By forming the large bubbles BA intermittently, a first water flow state (see FIG. 10) in which the jet WSm passes through the large bubbles BA and a second water flow state in which the jet WSm passes through the water. (Refer to FIGS. 3 and 6) are repeatedly generated alternately, and the water flow resistance of the jet WSm in the water flow path portion 105 is changed.

  In the present embodiment, since the large bubble BA having a cross-sectional area larger than the flow path cross-sectional area of the injection port 10b is intermittently formed, the first water flow state in which the jet WSm passes through the large bubble BA, The second water flow state through which the jet WSm passes can be alternately and repeatedly generated. In the first water flow state, the jet WSm penetrates through the large bubble BA, so that there is a lot of air around the jet WSm, the resistance to decelerate the jet WSm is weak, and the speed of the jet WSm is discharged while being maintained. Head towards exit NZa. On the other hand, in the second water flow state, since the jet WSm passes through the water, the periphery of the jet WSm is surrounded by water, the resistance to decelerate the jet WSm is strong, and the speed of the jet WSm decreases while heading toward the discharge port NZa. . Therefore, by alternately and repeatedly generating the first water flow state and the second water flow state, it is possible to greatly change the speed of the jet WSm toward the discharge port NZa and to give a large flow rate fluctuation to the water discharge. Even when the distance to landing is short, a sufficiently large water mass can be formed.

  In the present embodiment, the jet WSm is contracted and ejected from the ejection port 10b so that the cross-sectional area of the jet WSm is smaller than the cross-sectional area of the large bubble BA. In this way, the jet WSm is contracted and ejected from the ejection port 10b, so that the diffusion of the jet WSm is suppressed and its cross-sectional area can be reliably controlled. Accordingly, a state in which the cross-sectional area of the jet WSm is smaller than the cross-sectional area of the large bubble BA can be reliably formed, and the first water flow state can be reliably realized. be able to.

  Further, in the present embodiment, the bubble supply means supplies the large bubble BA toward the injection port 10 b of the water flow path unit 105. Thus, since the large bubble BA is supplied to the injection port 10b of the water flow path portion 105, the large bubble BA is stretched toward the discharge port NZa by the penetrating jet WSm. Therefore, the large bubble BA can exist in a long range from the injection port 10b side to the discharge port NZa side by a simple method of supplying the large bubble BA toward the injection port 10b. As a result, the length of the jet that penetrates the large bubble BA is increased, and the deceleration of the jet WSm in the first water flow state can be avoided more reliably, and the first water flow state can be reliably realized. Therefore, a large flow rate fluctuation can be given to the water discharge.

  Moreover, in this embodiment, a bubble supply means supplies large bubble BA so that the injection port 10b may be covered (refer FIG. 11). Thus, by supplying the large bubble BA so as to cover the injection port 10b, the vicinity of the injection port 10b can be covered with air. Therefore, in the first water flow state, the generation of vortices around the injection port 10b is suppressed, and the disturbance of the jet WSm accompanying the generation of vortices can be suppressed. As a result, since the progress of the jet WSm is stabilized and the first water flow state can be reliably realized, a large flow velocity fluctuation can be given to the water discharge.

  In the present embodiment, an air introduction port 10a is provided for taking air into the water reservoir chamber 10 from the outside, and extends in the vicinity of the air introduction port 10a from the air introduction port 10a side toward the water flow path portion 105 side. An inner wall surface of the water reservoir 10 is provided as a guide surface for promoting the growth of the bubbles BA (see FIG. 7).

  The air taken into the water reservoir 10 from the air inlet 10a tends to be separated from the air inlet 10a by the water flow in the water reservoir 10 before it becomes a large bubble BA and torn off. Therefore, since the foam-like air taken in from the air inlet 10a is supported by the inner wall surface as a guide surface provided in the vicinity, the growth is stably promoted even when subjected to water, and the large bubble BA Can grow into. Therefore, since the first water flow state can be surely realized, a large flow velocity fluctuation can be given to the water discharge.

  Further, the bubble supply means of the present embodiment generates a large bubble BA having a cross-sectional area larger than the flow passage cross-sectional area of the injection port 10b in the discharge pipe 103, and the large bubble BA is intermittently generated. The first water flow state (see FIG. 15) in which the jet flow WSm passes through the air layer formed along the inner wall surface of the discharge pipe 103 by the large bubbles BA, and the discharge from the water reservoir chamber 10 The second water flow state (see FIG. 5) in which the jet WSm passes through the water supplied to the pipe line 103 is alternately generated repeatedly, and the water flowing in the discharge pipe line 103 and the inner wall surface of the discharge pipe line 103 The contact area with is varied.

  According to this aspect, since the bubble supply means intermittently generates a large bubble BA having a cross-sectional area larger than the flow path cross-sectional area of the injection port 10b and supplies the large bubble BA to the discharge pipe 103, the inside of the discharge pipe 103 A first water flow state where the jet WSm passes through the air layer formed along the wall surface, and a second water flow state where the jet WSm passes through the water supplied from the water reservoir chamber 10 to the discharge pipe 103. Can be repeatedly generated alternately. In the first water flow state, since the jet WSm passes through the air layer formed in the discharge pipe 103, the contact area between the inner wall surface of the discharge pipe 103 and the jet WSm becomes small, and the discharge pipe 103. The frictional resistance received by the jet WSm traveling inside is reduced. On the other hand, in the second water flow state, since the jet WSm passes through the water supplied from the water reservoir 10, the contact area between the inner wall surface of the discharge pipe 103 and the water containing the jet WSm increases, and the discharge pipe The frictional resistance received by the jet WSm traveling in the passage 103 is increased. Therefore, by alternately and repeatedly generating the first water flow state and the second water flow state, the contact area between the water flowing through the discharge pipe 103 and the inner wall surface of the discharge pipe 103 is changed. Due to the fluctuation of the frictional resistance, the speed of the jet WSm toward the discharge port NZa can be greatly changed to give a large flow rate fluctuation to the water discharge, and even if the distance from the water discharge to the water landing is short, A lump can be formed.

  Further, since the jet WSm passes through the air layer formed in the discharge pipe 103 in the first water flow state, if attention is paid to the flow of the entire water in the discharge pipe 103, the second water flow state Rather than a substantial cross-sectional area of the flow path. Therefore, it becomes one of the factors that the velocity of the jet WSm passing through the discharge pipe 103 in the first water flow state becomes higher than the speed of water passing through the discharge pipe 103 in the second water flow state. In addition to the flow rate fluctuation of the discharged water due to the fluctuation of the frictional resistance as described above, the effect of the flow rate fluctuation of the discharged water due to the change of the channel cross-sectional area is also added, so that a large flow rate fluctuation can be given to the discharged water.

  Further, in the present embodiment, the bubble supply means generates a large bubble BA, so that the jet air WSm passing through the discharge conduit 103 is surrounded by a tubular air layer along the inner wall surface along the traveling direction. Is forming. In this way, since a tubular air layer is formed along the inner wall surface so as to surround the jet WSm along the traveling direction, the contact area between the jet WSm and the inner wall surface of the discharge pipe 103 can be further reduced. Can do. Therefore, the speed of the jet WSm in the first water-flowing state can be sufficiently higher than the speed of water in the second water-passing state, and a large flow velocity fluctuation can be given to the water discharge.

  Further, in the present embodiment, the bubble supply means supplies large bubbles BA from the water flow path portion 105 to the discharge conduit 103, and the water reservoir chamber side opening, which is an opening where the discharge conduit 103 faces the water reservoir chamber 10. Large bubble BA is supplied so that the outer periphery of 10c may be covered.

  In this way, since the large bubble BA is supplied from the water passage portion 105 side so as to cover the outer periphery of the water reservoir chamber side opening 10c, which is the opening facing the water reservoir chamber 10, the inner wall surface of the discharge conduit 103 is provided. Large bubbles BA can be fed so as to follow along. Therefore, it becomes easy to form a tubular air layer along the inner wall surface of the discharge conduit 103, and a large flow velocity fluctuation can be given to the water discharge.

  Further, in this embodiment, the bubble supply means supplies large bubbles BA from the water flow path portion 105 to the discharge conduit 103, and when the water flow passage portion 105 side is viewed from the discharge conduit 103 side. Then, the large bubble BA is supplied so as to have a cross-sectional area larger than the cross-sectional area of the discharge pipe 103.

  As described above, since the large bubble BA is supplied so as to have a cross-sectional area larger than the flow passage cross-sectional area of the discharge pipe 103, the large bubble BA can be sent while being surely aligned with the inner wall surface of the discharge pipe 103. it can. Therefore, it becomes easier to form a tubular air layer along the inner wall surface of the discharge pipe 103 more reliably, and a large flow velocity fluctuation can be given to the water discharge.

  Moreover, in this embodiment, when supplying the large bubble BA from the water flow path unit 105 to the discharge conduit 103, the bubble supply means temporarily supplies the bubble. As described above, when the large bubble BA is supplied from the water flow path portion 105 to the discharge pipe 103, the large bubble BA is temporarily retained and supplied, so that the large bubble BA is easily attached to the inner wall surface of the discharge pipe 103. . Therefore, it becomes easier to form a tubular air layer along the inner wall surface of the discharge pipe 103 more reliably and easily, and a large flow rate fluctuation can be given to the water discharge.

  In the present embodiment, the bubble supply means generates and supplies the large bubble BA so that the air layer is formed in a length substantially equal to the length along the traveling direction of the jet flow WSm of the discharge pipe 103. It is also preferable. In this preferred embodiment, since the large bubble BA is supplied so that an air layer is formed over the entire length of the discharge pipe 103, a tubular air layer can be formed from the water reservoir 10 to the discharge port NZa. . Therefore, in the first water flow state, the frictional resistance experienced by the jet WSm from the water reservoir 10 to the discharge port NZa can be made extremely small, and a large flow velocity fluctuation can be given to the water discharge.

  Further, in the present embodiment, the injection port 10b and the discharge pipe 103 are arranged so that the central axis of the jet flow WSm injected from the injection port 10b is located substantially on the same straight line as the central axis of the discharge pipe 103. In addition, the flow passage cross-sectional area of the discharge pipe 103 is larger than the flow passage cross-sectional area of the injection port 10b.

  Thus, since the central axis of the jet flow WSm ejected from the ejection port 10b is arranged so as to be substantially collinear with the central axis of the discharge pipe 103, the center of the discharge pipe 103 and the discharge pipe The center of the jet WSm entering the path 103 can be aligned. Further, since the flow passage cross-sectional area of the discharge pipe 103 is formed larger than the flow passage cross-sectional area of the injection port 10b, the gap between the jet flow WSm and the inner wall surface of the discharge pipe 103 is surely secured. Can keep. Therefore, a tubular air layer can be formed in the gap, and the jet WSm can be surely passed through the tubular air layer.

  Further, the bubble supply means of the present embodiment causes the air introduced into the water reservoir chamber 10 from the air introduction port 10a to grow greatly in a bubble shape over time, and is large when the bubble BA reaches a predetermined size. It supplies to the water flow path part 105 as bubble BA, Furthermore, until the air introduce | transduced from the air introduction port 10a becomes large bubble BA and is supplied to the water flow path part 105, it is the air introduction port 10a and A first water flow state (see FIGS. 3 and 6) that forms a relatively low flow sub-water flow WSs in the water reservoir chamber 10 that can maintain a state in which the bubbles BA communicate with each other, and is introduced from the air introduction port 10a. The sub-water flow WSs having a relatively high flow rate capable of separating the bubbles BA from the air introduction port 10a is formed in the water reservoir chamber 10 so that the generated air becomes large bubbles BA and is supplied to the water flow path portion 105. Second water flow state (Figure A reference), is repeatedly generated alternately.

  According to this aspect, in the first water flow state, the sub-water flow WSs having a relatively low flow rate capable of maintaining the state where the air inlet 10a and the bubble BA are in communication with each other is formed in the water reservoir chamber 10, so that the air The bubble BA formed by the air introduced from the inlet 10a can be grown without tearing. On the other hand, in the second water flow state, the bubble BA can be separated from the air introduction port 10a so that the air introduced from the air introduction port 10a becomes a large bubble BA and is supplied to the water flow path unit 105. Since the secondary water flow WSs having a high flow rate is formed in the water reservoir chamber 10, the bubbles BA grown in the first water flow state can be separated and supplied as large bubbles BA to the water flow path unit 105. By alternately and repeatedly generating the first water flow state and the second water flow state, a period in which the large bubble BA is not supplied to the jet WSm and a period in which the large bubble BA is supplied to the jet WSm are alternately repeated. Can be generated. In the period when the large bubble BA is supplied to the jet WSm, the speed of the jet WSm is maintained toward the discharge port NZa while being maintained. On the other hand, in the period when the large bubble BA is not supplied to the jet WSm, the jet flow WSm moves toward the discharge port NZa while the velocity of the jet WSm decreases. Therefore, by alternately and repeatedly generating the first water flow state and the second water flow state, the speed of the jet WSm toward the discharge port NZa can be greatly changed to give a large flow rate fluctuation to the discharged water. Even when the distance is short, a sufficiently large water mass can be formed.

  Further, in the present embodiment, the water reservoir chamber 10 is provided with an inner wall of the water reservoir chamber 10 that extends from the air introduction port 10a side toward the water flow path portion 105 side and functions as a guide surface that promotes the growth of the bubble BA. The supply means guides the air bubbles BA formed by the air introduced from the air introduction port 10a to the vicinity of the water flow path portion 105 while maintaining the state where the air bubbles BA are in contact with the inner wall as the guide surface (see FIGS. 6 and 7).

  The gas-liquid interface, which is the boundary between air and water, is easily deformed because it is formed by the balance of forces that air and water interact with each other. If the balance of forces is lost, the gas-liquid interface also collapses. Therefore, in the first water flow state in which the bubbles BA are grown, it is necessary to keep the area of the gas-liquid interface where air and water are in contact as small as possible in order to grow the bubbles BA stably. Therefore, by maintaining the state where the air bubbles BA formed by the air introduced from the air inlet 10a are in contact with the inner wall as the guide surface, the area of the gas-liquid interface is reduced from the air inlet 10a side to the water passage section 105 side. It is possible to decrease, maintain the communication state between the air inlet 10a and the growing bubble BA, and promote stable bubble growth.

  Further, in the present embodiment, the bubble supplying means is in the vicinity of the water flow path portion 105 while pressing the bubbles BA formed by the air introduced from the air inlet toward the inner wall as the guide surface by the sub-water flow WSs in the first water flow state. (See FIGS. 6 and 8).

  In the water reservoir 10, a negative pressure is generated because the jet WSm is injected from the injection port 10b toward the discharge port NZa. Since this negative pressure acts on the bubbles BA formed in the water reservoir 10, the bubbles BA may receive a force that is separated from the wall surface that is the guide surface. Therefore, since the bubble BA is pressed against the wall surface as the guide surface by the sub-water flow WSs in the first water flow state, the bubble BA is not pulled away from the wall surface as the guide surface even if negative pressure is applied, and the air inlet It is possible to reduce the area of the gas-liquid interface from the 10a side to the water passage section 105 side, maintain the communication state between the air inlet 10a and the growing bubble BA, and promote stable bubble growth.

  Further, in the present embodiment, the bubble supply means passes while pressing the bubble BA formed by the air introduced from the air introduction port 10a in the direction against the buoyancy acting on the bubble BA by the secondary water flow WSs in the first water flow state. It leads to the vicinity of the water path portion 105 (see FIG. 8).

  In this way, the buoyancy acting on the growing bubble BA and the secondary water flow WSs formed so as to press the bubble BA in a direction against the buoyancy are balanced, so that the bubble BA can be stably grown. . For example, even if the flow velocity of the secondary water flow WSs in the first water flow state is slightly increased, the surplus of the force by which the secondary water flow WSs presses the bubble BA against the wall surface as the guide surface can be reduced by the buoyancy of the bubble BA. Thus, it becomes possible to eliminate an excessive influence due to the substream WSs, maintain the communication state between the air inlet 10a and the growing bubble BA, and promote stable bubble growth.

  Moreover, in this embodiment, a guide surface has the 1st surface where a bubble is pressed, and the 2nd surface and 3rd surface which are opposingly arranged on both sides of the 1st surface (refer FIG. 7). Thus, since the guide surface is constituted by the first surface, the second surface, and the third surface, the air bubbles BA formed by the air introduced from the air introduction port 10a are pressed against the first surface while the second surface and the second surface are pressed. It can also contact three sides. Accordingly, it is possible to reduce the area of the gas-liquid interface where the side stream WSs and the bubble BA are in contact with each other, maintain the communication state between the air inlet 10a and the growing bubble BA, and promote stable bubble growth. It becomes possible.

  Further, in the present embodiment, the secondary water flow is introduced into the water reservoir chamber 10 from the secondary water flow inlet 10d formed independently of the injection port 10b. As described above, since the auxiliary water flow WSs is introduced from the auxiliary water flow introduction port 10d formed independently of the injection port 10b, the water introduced from the injection port 10b is separated into the auxiliary water flow WSs. In comparison, it becomes easier to control the flow rate of the auxiliary water stream WSs to a lower speed. Therefore, it is possible to maintain the communication state between the air inlet 10a and the growing bubble BA and promote stable bubble growth.

  In the present embodiment, the sub-water flow WSs presses the bubbles BA formed by the air introduced from the air introduction port 10a against the guide surface without interfering with the jet flow WSm. As described above, since the secondary water flow WSs is caused to act on the bubble BA without interfering with the jet flow WSm, the secondary water flow WSs is not accelerated by the action of the jet flow WSm. Therefore, the secondary water stream WSs is not excessively accelerated in the first water flow state and the bubbles BA are not torn off, and the communication state between the air inlet 10a and the growing bubble BA is maintained, and stable bubble growth is promoted. It becomes possible.

  In the present embodiment, the size of the air introduction port 10a is such that the bubble BA formed by the air introduced from the air introduction port 10a is disconnected from the air introduction port 10a depending on the sub-water flow WSs in the first water flow state. The size is set so that it does not hit.

  When bubbles are grown in the first water flow state, the bubbles BA are deformed when the bubbles BA and the sub-water flow WSs come into contact with each other. Therefore, the size of the air introduction port 10a is set so that the communication state with the air introduction port 10a is not cut off depending on the sub water flow WSs in the first water flow state. Even if the bubble BA is deformed by the action, the communication state between the air inlet 10a and the growing bubble BA can be maintained, and the large bubble BA can be supplied.

  Further, the bubble supply means of the present embodiment generates a large bubble BA having a cross-sectional area larger than the flow path cross-sectional area of the injection port 10b when the inside of the water reservoir 10 is viewed from the injection port 10b. The large bubble BA is intermittently formed and supplied to the water passage 105 so that the first state in which the jet WSm is pressurized and accelerated and the second state in which the jet WSm is not accelerated are alternately generated repeatedly. Let

  According to this aspect, since the bubble supply means intermittently forms the large bubble BA having a cross-sectional area larger than the flow path cross-sectional area of the injection port 10b, the first state in which the jet WSm is pressurized and accelerated, The second state in which the acceleration is not accelerated can be alternately generated repeatedly. In the first state, since the jet WSm is pressurized and accelerated, the velocity of the jet WSm increases toward the discharge port NZa. On the other hand, in the second state, since the jet WSm is not accelerated, the speed of the jet WSm does not increase and moves toward the discharge port NZa. Accordingly, by alternately and repeatedly generating the first state and the second state, the speed of the jet WSm toward the discharge port NZa can be greatly changed to give a large flow rate fluctuation to the discharged water. Even when the distance is short, a sufficiently large water mass can be formed.

  Further, in the present embodiment, in the first state, the large bubble BA is pressurized from the upstream side with respect to the large bubble BA supplied to the water flow path unit 105 by the jet WSm, and the pressurized large bubble BA is downstream of the large bubble BA. The jet WSm is pressurized and accelerated (see FIG. 13). Thus, since the large bubble BA pressurized by the jet flow WSm pressurizes the jet flow WSm on the further downstream side, the jet flow WSm is further accelerated in the first state, and the velocity of the jet flow WSm is greatly changed to cause a large flow rate in the discharged water. Variations can be given.

  In the present embodiment, in the first state, when the large bubble BA supplied to the water flow path portion 105 is discharged from the discharge port NZa, the jet WSm discharged from the discharge port NZa is pressurized and accelerated. Yes. As described above, when the large bubble BA supplied to the water flow path portion 105 is discharged from the discharge port NZa, the jet WSm discharged from the discharge port NZa is pressurized and accelerated by using the force that is released to the atmosphere and blows out. Therefore, the jet WSm is further accelerated in the first state, and the velocity of the jet WSm can be greatly varied to give a large flow velocity fluctuation to the water discharge.

  Further, in the present embodiment, in the first state, when the large bubble BA supplied to the water flow path portion 105 is discharged toward the discharge port NZa, the discharge pipe 103 extending from the water reservoir 10 toward the discharge port NZa. Large bubble BA is supplied so that it may become the magnitude | size which covers the water reservoir chamber side opening 10c.

  Thus, since the large bubble BA is supplied so as to cover the water reservoir chamber side opening 10c when discharged from the water reservoir 10 toward the discharge port NZa, the large bubble BA is not discharged without resistance. It is discharged while receiving resistance from the water reservoir chamber side opening 10c temporarily. Therefore, in the process, the large bubble BA receives pressure from the jet WSm, and the internal pressure of the large bubble BA increases. As a result, in the first state, the jet WSm is pressurized and accelerated by receiving a larger pressure from the large bubble BA, and the speed of the jet WSm can be greatly changed to give a large flow rate fluctuation to the water discharge.

  In the present embodiment, in the first state, it is also preferable to supply the large air bubble BA near the water reservoir chamber side opening 10c of the water flow path portion. In this preferred embodiment, since the large bubble BA is supplied closer to the water reservoir chamber side opening 10c, the bubble BA does not divide and reaches the water reservoir chamber side opening 10c without fail. Accordingly, the internal pressure of the large bubble BA is reliably increased, and the jet WSm is pressurized and accelerated in response to a larger pressure from the large bubble BA in the first state, and the velocity of the jet WSm is greatly changed to discharge water. Large flow rate fluctuations can be given.

  Further, the bubble supply means in the present embodiment changes the size of the bubble BA as a stationary bubble that is a bubble that is formed by the air introduced from the air inlet 10a and temporarily stays in the water reservoir 106, A first state (see FIG. 6) in which the volume of water in the water reservoir 106 is relatively reduced by increasing the bubble BA as a retained bubble, and the water in the water reservoir 106 by reducing the bubble BA as a retained bubble. By alternately and repeatedly generating a second state (see FIG. 3) in which the capacity of the water reservoir is relatively increased, the pressure in the water reservoir chamber 10 is varied.

  According to this aspect, since the bubble supply means changes the size of the bubble BA as the stationary bubble, which is a bubble that temporarily stays in the water reservoir 106, the bubble BA of the water reservoir 106 is increased by increasing the bubble BA as the stationary bubble. A first state in which the volume of water is relatively decreased and a second state in which the volume of water in the water reservoir 106 is relatively increased by reducing the bubble BA as a stationary bubble are alternately generated repeatedly. it can. As described above, by alternately and repeatedly generating the first state and the second state, it is possible to change the water pressure in the water reservoir chamber 10 and greatly change the speed of the jet WSm toward the discharge port NZa. A large flow rate fluctuation can be given. Therefore, a sufficiently large water mass can be formed even when the distance from water discharge to landing is short.

  Moreover, in this embodiment, it is provided with the swirl flow production | generation means which produces | generates the subwater flow WSs swirling in the water reservoir part 106, and a swirl flow production | generation means fluctuates the capacity | capacitance of the water in the water reservoir part 106, and rotates the subwater flow The swirling diameter of WSs is changed, and the speed of the jet flow WSm discharged from the discharge port NZa is changed. As described above, since the swirling diameter of the sub-water flow WSs that is a swirling flow is changed, the aspect in which the sub-water flow WSs affects the jet flow WSm is changed, and the speed of the jet flow WSm discharged from the discharge port NZa is changed. Can do.

  Further, in the present embodiment, the air introduction port 10a which is a formation position where the bubble BA as a stationary bubble is formed and a region below the air introduction port 10a and the sub water flow introduction port 10d which is an inflow position where the sub water flow WSs enters the water reservoir 106 are provided. Spaced apart. As described above, the air introduction port 10a that is a formation position where the bubble BA as the stationary bubble is formed and a region below the air introduction port 10a are separated from the sub-water flow introduction port 10d that is an inflow position where the sub-water flow WSs enters the water reservoir 106. Therefore, even if the size and position of the bubble BA as the stationary bubble fluctuate rapidly, it is possible to reduce the direct influence on the trajectory of the sub-water flow WSs that is a swirling flow. Therefore, the influence of the jet flow WSm on the speed fluctuation can be reduced, and the jet WSm having a stable fluctuation mode can be discharged.

  In the present embodiment described above, the secondary water flow introduction port 10d is provided separately from the injection port 10b in order to form the secondary water flow WSs, but the secondary water flow WSs is formed without providing the secondary water flow introduction port 10d. This is also a preferred embodiment. A modification from this viewpoint will be described with reference to FIGS.

  FIG. 17 is a view showing a water reservoir chamber 10L as a modified example in which the auxiliary water flow WSs is formed in the water reservoir chamber 10. FIG. 18 is a diagram for explaining the transition of the flow of the sub-water flow WSs in the modification shown in FIG.

  The water reservoir 10L is formed by omitting the auxiliary water flow inlet 10d of the water reservoir 10 and expanding the diameter of the injection port 10b to form the injection port 10bL. By forming the injection port 10bL whose diameter is increased in this way, a part of the jet flow WSm is changed in direction, and the sub-water flow WSs is formed as the split flow WSd.

  As shown in FIG. 18A, when the bubble BA is small, the pressure in the water reservoir chamber 10L is low, so that the partial flow WSd has a relatively large flow rate and the sub-water flow WSs has a large flow rate. On the other hand, as shown in FIG. 18 (B), when the bubble BA increases, the pressure in the water reservoir 10L increases, the partial flow rate WSd decreases, and the secondary water flow WSs decreases.

  FIG. 19 is a view showing a water reservoir chamber 10M as a modified example in which the auxiliary water flow WSs is formed in the water reservoir chamber 10. The water reservoir chamber 10M is provided with a reduced diameter member 10cM so as to close a part of the water reservoir chamber-side opening 10c by omitting the auxiliary water flow inlet 10d of the water reservoir chamber 10. By configuring in this way, a part of the jet flow WSm is changed in direction by the reduced diameter member 10cM, and the auxiliary water flow WSs is formed as the branch flow WSd.

  In the embodiment described above, an example in which the bubble BA is a large bubble grown has been described. However, it is also a preferable aspect that the large bubble is formed by combining small bubbles. This preferred embodiment will be described with reference to FIGS.

  FIG. 20 shows a schematic configuration of a water reservoir chamber 10N as an example in which small bubbles are collected by buoyancy to form large bubbles. As shown in FIG. 20A, the water reservoir 10N includes an air pipe 101N, a first water supply pipe 102, a discharge pipe 103, and a second water supply pipe 104. The air pipe 101 </ b> N, the first water supply pipe 102, the discharge pipe 103, and the second water supply pipe 104 are pipes provided so as to communicate with the inside of the water reservoir chamber 10. The air duct 101N communicates with the interior of the water reservoir 10 through an air inlet 10aN formed in the water reservoir 10.

  The air conduit 101N is a conduit that connects the air inlet 10aN and the opening that is open to the atmosphere. Air introduced from the air duct 101N is drawn into the water reservoir 10N through the air inlet 10aN. The air drawn into the water reservoir 10N forms small bubbles BAs.

  In the case of the present embodiment, the ejection port 10b and the water reservoir chamber side opening 10c are disposed close to one side of the rectangular water reservoir chamber 10N. On the other hand, the air inlet 10aN and the sub-water flow inlet 10d are disposed close to the other side of the rectangular water reservoir 10. Therefore, the injection port 10b and the water reservoir chamber side opening 10c, the air introduction port 10aN, and the auxiliary water flow introduction port 10d are spaced apart. Further, the air inlet 10aN and the auxiliary water flow inlet 10d are arranged close to each other. Accordingly, the small bubbles BAs supplied from the air introduction port 10aN are conveyed by the sub-water flow WSs supplied from the sub-water flow introduction port 10d.

  Further, the water reservoir chamber 10N is provided with a bubble holding recess 107N (bubble holding portion) and a bubble holding protrusion 108N (bubble holding portion). The bubble holding recess 107N is formed on the same wall surface as the air inlet 10aN, and is formed as a recess recessed from the wall surface. The bubble holding protrusion 108N is a protrusion formed on the wall surface facing the wall surface where the sub-water flow inlet 10d is formed and formed below the bubble holding recess 107N.

  The small bubbles BAs introduced from the air introduction port 10aN are transported by the secondary water flow WSs and are separated from the secondary water flow WSs by buoyancy. Since the bubble holding recess 107N and the bubble holding protrusion 108N are formed at the separation point, the small bubbles BAs gather to form the middle bubble BAm (see FIG. 20B).

  When the small bubbles BAs gather further from the state of FIG. 20B, they become large bubbles BAn and overflow from the space surrounded by the bubble holding recess 107N and the bubble holding protrusion 108N (see FIG. 20C). . The large bubbles BAn overflowing from the space surrounded by the bubble holding recess 107N and the bubble holding projection 108N ride on the flow of the sub-water flow WSs toward the jet WSm (see FIG. 20D).

  Next, FIG. 21 shows a schematic configuration of a water reservoir chamber 10P as an example in which small bubbles are collected by centrifugation to form large bubbles. As shown in FIG. 21A, the water reservoir 10P includes an air pipe 101N, a first water supply pipe 102, a discharge pipe 103, and a second water supply pipe 104. The air pipe 101 </ b> N, the first water supply pipe 102, the discharge pipe 103, and the second water supply pipe 104 are pipes provided so as to communicate with the inside of the water reservoir chamber 10. The air duct 101N communicates with the interior of the water reservoir 10 through an air inlet 10aN formed in the water reservoir 10.

  The air conduit 101N is a conduit that connects the air inlet 10aN and the opening that is open to the atmosphere. Air introduced from the air duct 101N is drawn into the water reservoir 10N through the air inlet 10aN. The air drawn into the water reservoir 10N forms small bubbles BAs.

  In the case of the present embodiment, the ejection port 10b and the water reservoir chamber side opening 10c are disposed close to one side of the rectangular water reservoir chamber 10N. On the other hand, the air inlet 10aN and the sub-water flow inlet 10d are disposed close to the other side of the rectangular water reservoir 10. Therefore, the injection port 10b and the water reservoir chamber side opening 10c, the air introduction port 10aN, and the auxiliary water flow introduction port 10d are spaced apart. Further, the air inlet 10aN and the auxiliary water flow inlet 10d are arranged close to each other. Accordingly, the small bubbles BAs supplied from the air introduction port 10aN are conveyed by the sub-water flow WSs supplied from the sub-water flow introduction port 10d.

  Furthermore, the water retention chamber 10P is provided with a bubble holding ridge 107P (bubble retention portion). The bubble holding collar 107P is provided near the center of the water reservoir 10P. The bubble holding collar portion 107P includes a high wall portion 107Pa provided on the air introduction port 10aN and the side water flow introduction port 10d side, and a low wall portion disposed opposite to the high wall portion 107Pa and having a lower height than the high wall portion 107Pa. 107Pb and a bottom wall portion 107Pc connecting the high wall portion 107Pa and the low wall portion 107Pb.

  The small bubbles BAs introduced from the air introduction port 10aN are transported by the sub-water flow WSs and are centrifuged by the flow of the sub-water flow WSs, which is a swirling flow, and the light small bubbles BAs are separated from the sub-water flow WSs and gather at the swirling center. . Since the bubble holding collar 107P is formed at this aggregation point, the small bubbles BAs gather to form the middle bubble BAm (see FIG. 21B).

  When the small bubbles BAs gather further from the state of FIG. 21B, they become large bubbles BAn and overflow from the space surrounded by the bubble holding collar 107P (see FIG. 21C). The large bubble BAn overflowing from the bubble holding collar 107P rides on the flow of the sub-water flow WSs toward the jet WSm.

  Next, FIG. 22 shows a schematic configuration of the water reservoir 10Q as an example in which small bubbles are collected by hooking to form large bubbles. As shown in (A) of FIG. 22, the water reservoir 10 </ b> Q includes an air pipe 101, a first water supply pipe 102, a discharge pipe 103, and a second water supply pipe 104. The air pipe 101, the first water supply pipe 102, the discharge pipe 103, and the second water supply pipe 104 are pipes provided so as to communicate with the inside of the water reservoir chamber 10.

  The air pipe 101 is a pipe connecting the air inlet 10a and the opening opened to the atmosphere. Air introduced from the air duct 101 is drawn into the water reservoir 10Q from the air inlet 10a. The air drawn into the water reservoir 10Q forms small bubbles BAs.

  In the case of the present embodiment, the ejection port 10b and the water reservoir chamber side opening 10c are disposed close to one side of the rectangular water reservoir chamber 10N. On the other hand, the air inlet 10a and the auxiliary water inlet 10d are disposed close to the other side of the rectangular water reservoir chamber 10. Therefore, the injection port 10b and the water reservoir chamber side opening 10c, the air introduction port 10a, and the auxiliary water flow introduction port 10d are spaced apart. The small bubbles BAs supplied from the air introduction port 10a descend while being conveyed by the sub-water flow WSs supplied from the sub-water flow introduction port 10d.

  Further, the water reservoir chamber 10Q is provided with a bubble holding recess 107Q (bubble holding portion) and a bubble holding protrusion 108Q (bubble holding portion). The bubble holding recess 107Q is formed as a recess that is formed below the air inlet 10a, on the wall facing the wall on which the auxiliary water flow inlet 10d is formed, and recessed from the wall. The bubble holding protrusion 108Q is a protrusion that is formed on the wall surface facing the wall surface where the auxiliary water flow inlet 10d is formed, and is formed below the bubble holding recess 107Q.

  The small bubbles BAs introduced from the air inlet 10a are transported by the auxiliary water flow WSs and are caught by the bubble holding protrusions 108Q. By hooking in this way, small bubbles BAs gather to form medium bubbles BAm (see FIG. 22B).

  When the small bubbles BAs gather further from the state of FIG. 22B, they become large bubbles BAn and overflow from the space surrounded by the bubble holding recess 107Q and the bubble holding projection 108Q (see FIG. 22C). . The large bubble BAn overflowing from the space surrounded by the bubble holding recess 107Q and the bubble holding projection 108Q rides on the flow of the sub-water flow WSs toward the jet WSm (see FIG. 22D).

  In the water reservoir chambers 10N, 10P, and 10Q according to the modification described with reference to FIGS. 20 to 22, the air introduced into the water reservoir chambers 10N, 10P, and 10Q from the air inlets 10a, 10aN into a bubble shape over time. It has a bubble retention part (bubble holding recesses 107N and 107Q, bubble holding protrusions 108N and 108Q, bubble holding collar part 107P) that grows large, and water is passed as a large bubble BAn when the bubbles reach a predetermined size. A plurality of small bubbles BAs, which are supplied to the path portion and formed by the air introduced from the air inlets 10a and 10aN, are temporarily retained in the bubble retaining portion, and the plurality of small bubbles temporarily retained The first state where BAs are combined to form a large bubble BAn, and a plurality of small bubbles BAs are combined to reach a predetermined size, and then the large bubble BAn is passed through the bubble retaining portion as a water passage. And a second state for supplying the parts, thereby repeatedly generating alternately.

  According to such a configuration, in the first state, the plurality of small bubbles BAs formed by the air introduced from the air inlets 10a and 10aN are temporarily retained in the bubble retaining portion, and the plurality of temporarily retained plural bubbles. Since the small bubbles BAs are combined, the small bubbles BAs formed by the air introduced from the air inlets 10a and 10aN can be gathered and grown. On the other hand, in the second state, when a plurality of small bubbles BAs are combined and become a predetermined size, large bubbles BAn are supplied from the bubble retaining portion to the water passage portion as the large bubbles BAn. Bubbles BAn can be supplied to the water passage. By alternately and repeatedly generating such a first state and a second state, a period in which the large bubbles BAn are not supplied to the jet WSm and a period in which the large bubbles BAn are supplied to the jet WSm are alternately generated repeatedly. be able to. During the period in which the large bubbles BAn are supplied to the jet WSm, the speed of the jet WSm is maintained toward the discharge port NZa while being maintained. On the other hand, in a period in which the large bubbles BAn are not supplied to the jet flow WSm, the jet flow WSm moves toward the discharge port NZa while the speed of the jet flow WSm decreases. Accordingly, by alternately and repeatedly generating the first state and the second state, the speed of the jet WSm toward the discharge port NZa can be greatly changed to give a large flow rate fluctuation to the discharged water. Even when the distance is short, a sufficiently large water mass can be formed.

  Moreover, in this modification, the bubble supply means forms a plurality of small bubbles BAs formed by the air introduced from the air inlets 10a, 10aN in the water reservoirs 10N, 10P, 10Q as a flow different from the jet WSm. There is a bubble separation means for separating the secondary water stream WSs and guiding it to the bubble retention part.

  Even if the sub-water flow WSs formed in the water reservoir chambers 10N, 10P, and 10Q as a flow different from the jet flow WSm is brought close to the jet flow WSm if it approaches the jet flow WSm while flowing in the water reservoir chamber. . Therefore, in a state where the sub-water stream WSs includes a plurality of small bubbles BAs, the plurality of small bubbles BAs cannot be collected and grown. Therefore, since the bubble separating means for separating the plurality of small bubbles BAs from the sub-water stream WSs is provided, the plurality of small bubbles BAs can be separated from the sub-water stream WSs and reliably grown.

  Further, in the present modification, the bubble supply means uses the stationary water flow as a flow different from the jet flow WSm and the secondary water flow WSs so that the plurality of small bubbles BAs separated from the secondary water flow WSs by the bubble separation means remain in the bubble retention portion. It is formed in the bubble retention part.

  As described above, since the stationary water flow is formed as an independent flow different from the jet flow WSm and the sub-water flow WSs in the bubble retention portion, by including the small bubbles BAs in the stationary water flow, the influence of the jet WSm and the sub-water flow WSs. And the small bubbles BAs can remain in the bubble retaining portion.

  Further, in this modification, the bubble supply means causes the bubble retaining portion to overflow when a plurality of small bubbles BAs temporarily retained in the bubble retaining portion are combined into a large bubble BAn of a predetermined size. Is supplied to the water passage.

  As described above, the plurality of small bubbles BAs collected in the bubble retaining portion can be combined and become a predetermined size, and the plurality of small bubbles collected can be retained in the bubble retaining portion. When the bubbles BAs are combined into a large bubble BAn of a predetermined size, the large bubble BAn can be supplied to the water passage portion by overflowing from the bubble retention portion. Therefore, the first state and the second state can be switched using the bubble overflow phenomenon from the bubble retaining portion.

  Further, in the water reservoir chamber 10N described with reference to FIG. 20, the bubble separation means separates the plurality of small bubbles BAs from the sub-water stream WSs by buoyancy acting on the plurality of small bubbles BAs, and serves as a bubble retention unit. The bubble holding recess 107N and the bubble holding projection 108N are provided adjacent to the upper wall of the water reservoir.

  As described above, since the plurality of small bubbles BAs are separated from the sub-water stream WSs using the naturally generated force called buoyancy acting on the plurality of small bubbles BAs, the bubbles can be separated with a simple configuration. In addition, since the bubble retaining portion is provided adjacent to the upper wall, it is possible to collect bubbles using the phenomenon that bubbles separated by buoyancy rise to the maximum.

  Further, in the water reservoir chamber 10P described with reference to FIG. 21, the bubble separation means separates the plurality of small bubbles BAs by the centrifugal force generated by turning the sub-water flow WSs, and is a bubble retention part. The bubble holding collar 107P is provided in the vicinity of the turning center on the inner side of the trajectory around which the sub-water flow WSs turns.

  As described above, the small bubbles BAs are separated by the centrifugal force generated as a result of the swirling of the sub-water stream WSs, and the small bubbles BAs are collected and grown by the bubble holding collar 107P that is the bubble retaining portion provided in the vicinity of the swirling center. Therefore, the small bubbles BAs can be separated from the auxiliary water stream WSs and collected by a simple method of swirling the auxiliary water stream WSs.

WA: Local cleaning device (water discharge device)
WAa: body part WAb: toilet seat WAc: toilet lid WAd: remote control NZ: nozzle NAa: outlet CB: toilet bowl JW: spout 10: water reservoir 10a: air inlet 10b: injection port 10c: water reservoir side opening 10d: sub Water flow inlet 101: Air pipe line 102: First water supply pipe line 103: Discharge pipe line 104: Second water supply pipe line 105: Water flow path part 106: Water reservoir part PW: Water reservoir BA: Bubble WSm: Jet WSs: Sub Water flow

Claims (6)

A water discharge device that discharges water toward a human body,
A water supply channel for supplying water;
An injection port for injecting water supplied from the water supply channel as a jet toward the downstream side;
A discharge port provided on the downstream side of the injection port, for discharging the jet flow to the outside;
In order to form water storage adjacent to the water flow path portion and the water flow path portion, which are provided between the jet port and the discharge port and through which a jet flow from the jet port to the discharge port passes. A water reservoir chamber having a water reservoir portion;
A bubble supply means for supplying bubbles in the form of air to the water passage section,
The bubble supply means includes
An air inlet for introducing air into the water reservoir, and a bubble retaining portion for allowing the air introduced from the air inlet into the water reservoir to grow in a bubble shape over time, and the bubbles are of a predetermined size. At that stage, it is intermittently supplied to the water flow path as large bubbles,
A plurality of bubbles formed by air introduced from the air introduction port are temporarily retained in the bubble retention unit, and the plurality of temporarily retained bubbles are combined to form large bubbles; The water discharge device is characterized by alternately and repeatedly generating a second state in which the bubbles are combined into a predetermined size and supplied to the water passage portion from the bubble retaining portion as a large bubble.   The bubble supply means separates a plurality of bubbles formed by the air introduced from the air inlet from a sub-water flow formed in the water reservoir as a flow different from the jet flow and guides the bubbles to the bubble retention portion It has a means, The water discharging apparatus of Claim 1 characterized by the above-mentioned.   The bubble supply means causes the stationary water flow to flow into the bubble retention portion as a flow different from the jet flow and the secondary water flow so that the plurality of bubbles separated from the subsidiary water flow by the bubble separation means remain in the bubble retention portion. It forms, The water discharging apparatus of Claim 2 characterized by the above-mentioned.   The bubble supply means causes the water flow path portion to overflow from the bubble retention portion when a plurality of bubbles temporarily retained in the bubble retention portion are combined into a large bubble of a predetermined size. The water discharge device according to claim 3, wherein the water discharge device is supplied to the water discharge device. The bubble separating means separates the plurality of bubbles from the secondary water flow by buoyancy acting on the plurality of bubbles,
The water discharge device according to claim 3, wherein the bubble retaining portion is provided adjacent to an upper wall of the water reservoir. The bubble separation means separates the plurality of bubbles by centrifugal force generated by swirling the sub-water flow,
The water discharge device according to claim 3, wherein the bubble retaining portion is provided in the vicinity of the turning center on the inner side of the trajectory around which the auxiliary water flow turns.