JP6115886B2 - Shower equipment - Google Patents

Description

  The present invention relates to a shower device that discharges bubble-containing water mixed with air.

  As an example of a shower device, there is known a device in which air is mixed into water by using a so-called ejector effect and discharged as bubble-containing water. Such a shower device that discharges water containing bubbles can realize a high sense of volume (large water droplets when landing on a human body) even with a small amount of water by mixing air.

JP-T-2006-509629 Japanese Patent No. 3747323

  However, in the case of a shower device that discharges water mixed with bubbles, there is a merit that a high sense of volume can be ensured. On the other hand, when air is mixed, the density of water drops decreases, and when water drops land on the human body However, there is a problem that the feeling of irritation felt by the user is weakened.

  In addition, since the preference for the feeling of stimulation varies depending on the user, it is preferable that the user can arbitrarily switch between a mode with a high sense of volume and a feeling of high stimulation and a high feeling of sense of volume and a low feeling of stimulation.

The present invention has been made in view of the problems described above, and the user himself has a mode in which a high volume feeling and a high stimulation feeling can be enjoyed with a small amount of water, and a mode in which a high volume feeling and a low stimulation feeling can be enjoyed with a small amount of water. An object of the present invention is to provide a shower device that can be arbitrarily switched.

  In order to solve the above problems, a shower device according to the present invention is a shower device that discharges air-mixed water in which air is mixed, and is provided on a downstream side of the water supply unit, a water supply unit that supplies water, A throttle part that reduces the cross-sectional area of the flow channel compared to the water supply part, increases the flow rate of the passing water and injects it downstream as a main water flow, and an air inlet that is provided downstream of the throttle part and introduces air And an air mixing part that mixes air introduced from the air inlet into the main water flow to generate bubble mixed water, and is provided downstream of the air mixing part, and discharges the bubble mixed water. A water discharge portion in which a plurality of water spray holes are formed. The shower device according to the present invention further includes pulsation imparting means for periodically changing the amount of air mixed into the main water flow, pulsation stopping means for making the air amount mixed into the main water flow steady, and the pulsation imparting means. And a switching means for switching between the operation of the pulsation stopping means.

  According to the present invention, air is mixed into the main water stream ejected from the throttle unit at the air mixing unit to form bubble mixed water, and the bubble mixed water is discharged from the water discharging unit, so that the user can enjoy a large amount of discharged water. Can be made. Furthermore, in the present invention, pulsation imparting means is provided, and the amount of air mixed into the main water flow can be periodically changed by the pulsation imparting means. Specifically, in a state where the air mixing amount is large, the flow rate of the bubble mixed water (water + air) discharged increases, and the flow rate of the discharged bubble mixed water increases. On the other hand, in a state where the air mixing amount is small, the flow rate of the bubble mixed water (water + air) discharged becomes small, and the flow rate of the bubble mixed water discharged becomes low. In this way, air bubbles mixed in with different flow velocities are discharged alternately, so that the water mixed in with high flow velocity discharged later is mixed with bubbles with low flow velocity discharged before. The water catches up, and as a result, the water discharge becomes coarse and dense. As a result, a large amount of water containing bubbles is intermittently landed on the human body, and the user's irritation can be enhanced. Furthermore, in the present invention, by providing pulsation stopping means for stopping pulsation, the amount of air mixed into the main water flow can be made steady. Specifically, since there is no difference in the flow rate of the bubble-containing water discharged by making the air mixing amount steady, the steady bubble-containing water continuously lands on the human body, giving pulsation. Compared with the operation of the means, the user's irritation can be weakened. Furthermore, in this invention, the switching means which switches the action | operation of a pulsation provision means and the action | operation of a pulsation stop means is provided, and a user can switch the irritation | stimulation feeling of bubble mixed water according to liking.

Moreover, in the shower apparatus which concerns on this invention, the said pulsation provision means changes the advancing direction of the said main water flow injected into the said air mixing part from the said throttle part periodically, and the air amount mixed in the said main water flow The pulsation stopping means is configured to stop the fluctuation in the traveling direction of the main water flow injected from the throttle portion to the air mixing portion, thereby mixing the air mixed in the main water flow. It is also preferable to make the amount steady.

By periodically changing the traveling direction of the main water flow, the amount of air mixed in the main water flow in the air mixing portion can be changed, and the user's irritation can be enhanced. Further, by making the traveling direction of the main water flow steady, the amount of air mixed in the main water flow in the air mixing portion can be made steady, and the user's irritation can be weakened.

  Further, in the shower device according to the present invention, the pulsation imparting means is provided with a vortex water flow forming portion for forming a vortex water flow on the opposite side of the air introduction port across the main water flow, and is generated by the vortex water flow. The direction of travel of the main water flow is changed by periodically changing the magnitude of the negative vortex flow negative pressure, and the switching means is generated on the air inlet side across the main water flow The pulsation stopping means is generated in the vortex water flow forming section by constantly generating a large intake negative pressure compared to when the pulsation applying means is operated by the switching means. It is also preferable that the moving direction of the main water flow is prevented from changing due to the vortex water negative pressure.

ADVANTAGE OF THE INVENTION According to this invention, the advancing direction of a main water flow can be changed with the swirl water flow formed in the swirl water flow formation part. Next, the action of this eddy water flow will be described. First, the main water flow ejected from the throttle portion is drawn toward the vortex water flow forming portion side by the vortex water flow negative pressure caused by the vortex water flow. At this time, as the traveling direction of the main water flow ejected from the throttle portion is inclined toward the vortex water flow forming portion, the rotational radius of the vortex water flow is gradually reduced, and the negative pressure generated by the vortex water flow is also reduced accordingly. This is because the magnitude of the rotation radius in the spiral water flow and the magnitude of the negative pressure generated by the spiral water flow are positively correlated. If the rotational radius of the spiral water flow is reduced to a certain extent in this way, the negative pressure generated by the spiral water flow is reduced, and the action of attracting the main water stream injected from the throttle is weakened. As a result, the traveling direction of the main water stream is the original position. Return to. When the traveling direction of the main water flow returns to the original position, the rotational radius of the spiral water flow formed in the vortex water flow forming portion is increased again. When the radius of rotation of the spiral water flow increases, the negative pressure generated by the spiral water flow increases, and the main water flow ejected from the throttle portion again is drawn toward the vortex water flow formation side by the negative pressure. By repeating the phenomenon described above, it is possible to periodically change the traveling direction of the main water flow injected from the throttle portion.
Further, according to the present invention, the pulsation stopping means constantly generates a larger intake negative pressure than that when the pulsation imparting means is operated by the switching means, so that the main water flow proceeds by the vortex water flow negative pressure generated in the vortex water flow forming portion. It is configured to prevent the direction from fluctuating. In a state where the intake negative pressure generated on the air inlet side is large, the influence of the vortex flow negative pressure on the main water flow is offset and reduced by the intake negative pressure, so that the traveling direction of the main water flow can be prevented from changing. In the state where the intake negative pressure generated on the air inlet side is small, the influence of the vortex flow negative pressure on the main water flow is overwhelmingly large, so the traveling direction of the main water flow can be changed by the vortex flow negative pressure. .

  In the shower apparatus according to the present invention, the switching means switches the operation of the pulsation applying means and the operation of the pulsation stopping means by changing the opening of the air inlet, and the pulsation providing means It is also preferable that the opening degree of the air inlet is smaller when the pulsation stopping means is activated than when the pulsation stopping means is activated.

  According to the present invention, the operation of the pulsation applying means and the operation of the pulsation stopping means can be switched with a simple configuration in which the opening of the air inlet is changed. Specifically, by changing the opening degree of the air inlet, the ventilation resistance of the air inlet changes, and the amount of air introduced changes. In the state where the opening degree of the air introduction port is reduced and the air introduction amount is reduced, the intake negative pressure can be increased because the air amount for reducing the negative pressure generated by the main water flow cannot be introduced. On the other hand, when the opening of the air inlet is increased and the amount of air introduced is increased, the amount of air for reducing the negative pressure generated by the main water flow can be introduced, so that the intake negative pressure can be reduced.

According to the present invention, there is provided a shower device that allows the user to arbitrarily switch between a mode that can enjoy a high volume feeling and a high stimulation feeling with a small amount of water, and a mode that can enjoy a high volume feeling and a low stimulation feeling with a small amount of water. can do.

It is a figure which shows the shower apparatus which concerns on embodiment of this invention, Comprising: (A) shows a top view, (B) shows a side view, (C) has shown the bottom view. It is sectional drawing which shows the AA cross section in (A) of FIG. It is an expansion perspective sectional view which expands and shows the aeration part vicinity shown in FIG. In the shower apparatus of this embodiment, it is a figure for demonstrating the principle which performs pulsating water discharge. In the shower apparatus of this embodiment, it is a figure for demonstrating the principle which performs pulsating water discharge. In the shower apparatus of this embodiment, it is a figure for demonstrating the principle which performs pulsating water discharge. In the shower apparatus of this embodiment, it is a figure for demonstrating the principle which performs pulsating water discharge. It is a photograph which shows the mechanism which performs pulsating water discharge in the shower apparatus of this embodiment. In the shower apparatus of this embodiment, it is a photograph which shows the state which carried out the pulsation water discharge. In the shower apparatus of this embodiment, explanatory drawing of a pulsation stop means steady state

  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 shower apparatus which is embodiment of this invention is demonstrated referring FIG. FIG. 1 is a diagram showing a shower apparatus F1 according to an embodiment of the present invention. FIG. 1A shows a plan view, FIG. 1B shows a side view, and FIG. ) Shows a bottom view. As shown in FIG. 1A, the shower apparatus F1 is mainly composed of a main body 4 having a substantially disk shape, and a water supply port 41d and an opening 431 are provided on the upper surface 4a of the shower apparatus F1 (main body 4). Is formed.

  As shown in FIG. 1B, the body 4 of the shower apparatus F1 has an outer shape by a cavity 4A in which a water supply port 41d and an opening 431 are formed, and a shower plate 4B in which a water spray hole 443 is formed. Is configured. As shown in FIG. 1C, a plurality of water spray holes 443 are formed in the lower surface 4b of the main body 4, and a sealing piece 4E is arranged. In the case of this embodiment, the water spray holes 443 are arranged radially with the sealing piece 4E as the center.

  Subsequently, the shower apparatus F1 will be described with reference to FIG. 2 which is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 2, the shower apparatus F1 includes a cavity 4A, a shower plate 4B, an introduction piece 4D, and a sealing piece 4E.

  The cavity 4A is a member that forms the outer shape of the main body 4 together with the shower plate 4B. A circular recess 4Ab is formed from the contact surface 4Aa opposite to the upper surface 4a of the main body 4 toward the upper surface 4a.

  The shower plate 4B is a member that forms the outer shape of the main body 4 together with the cavity 4A, and a plurality of water spray holes 443 are radially formed. The contact surface 4Ba opposite to the lower surface 4b of the region where the water spray holes 443 are formed is configured to be the side wall 44c of the water discharger 44.

  When the contact surface 4Ba of the shower plate 4B and the contact surface 4Aa of the cavity 4A are brought into contact with each other, a gap is formed by the recess 4Ab of the cavity 4A and the contact surface 4Ba. 44. A part of the recess 4 </ b> Ab is configured to be a side wall 44 a of the water discharger 44.

  The water supply unit 41, the throttle unit 42, and the air mixing unit 43 of the shower device F1 will be described with reference to FIG. 3 in which the vicinity of the water supply unit 41, the throttle unit 42, and the air mixing unit 43 is enlarged. As shown in FIG. 3, the water supply unit 41, the throttle unit 42, and the air mixing unit 43 are configured by a cavity 4A, a shower plate 4B, an introduction piece 4D, and a sealing piece 4E.

  The introduction piece 4D has a large diameter part 4Da and a small diameter part 4Db. A water supply port 41d is formed at the end of the large diameter portion 4Da opposite to the small diameter portion 4Db. A cylindrical cavity is formed inside the large-diameter portion 4Da so as to be connected to the water supply port 41d. A flange portion 4Daa is formed at the end of the large diameter portion 4Da where the water supply port 41d is formed. An opening 431 is formed in the flange portion 4Daa so as to penetrate the flange portion 4Daa in the thickness direction.

  A throttle port 42d is formed at the end of the small diameter portion 4Db opposite to the large diameter portion 4Da. A cavity is formed in the small diameter portion 4Db so as to connect the throttle port 42d and the water supply unit 41, and serves as the throttle unit 42.

  The introduction piece 4D is housed in a recess 4Ac and a through hole 4Ad formed in the cavity 4A. The recess 4Ac is formed at the center of the cavity 4A. A through hole 4Ad is formed in the center of the bottom of the recess 4Ac. The small diameter portion 4Db of the introduction piece 4D is accommodated in the through hole 4Ad, and is disposed so as to protrude from the through hole 4Ad and face the sealing piece 4E. The large-diameter portion 4Da of the introduction piece 4D is housed in the recess 4Ac, and the flange portion 4Daa is in contact with the outer end of the recess 4Ac.

  An air gap is formed between the large diameter portion 4Da and the recess 4Ac, and between the small diameter portion 4Db and the through hole 4Ad, forming an air flow path 431a. The air flow path 431 a is formed so as to connect the opening 431 and the aeration unit 43.

  The sealing piece 4E is fitted into a through hole 4Bb formed at the center of the shower plate 4B. A water guide recess 42e is formed at the center of the surface of the sealing piece 4E on the introduction piece 4D side. A vortex chamber 432 is formed around the water guiding recess 42e. The water guiding recess 42e and the vortex chamber 432 are formed by providing a recess so as to recede from the surface of the sealing piece 4E on the introduction piece 4D side.

  An inclined surface 421c is formed at the end of the water guiding recess 42e on the vortex chamber 432 side. The inclined surface 421c is formed as an inclined surface that gradually rises from the bottom surface of the water guiding recess 42e. The inclined surface 421c is disposed so as to face the end surface 421b of the small diameter portion 4Db of the introduction piece 4D. The end surface 421b is disposed in parallel with the bottom surface of the water guiding recess 42e. A throttle channel 421 is formed by the inclined surface 421c and the end surface 421b.

  Water introduced from the water supply port 41 d passes through the water supply unit 41 and the throttle unit 42 and is jetted from the throttle channel 421 toward the air mixing unit 43. Further, the air introduced from the opening 431 passes through the air flow path 431a and is introduced into the air mixing unit 43. When water is jetted from the throttle channel 421 toward the air mixing part 43, a gas-liquid interface is formed on the water discharge part 44 side, and the water jetted into the gas-liquid interface enters and entrains the air, so It is formed.

  As described above, by assembling the cavity 4A, the shower plate 4B, the introduction top 4D, and the sealing piece 4E, the shower apparatus F1 includes the water supply unit 41, the throttle unit 42, the air mixing unit 43, A water discharge unit 44 is provided.

  The water supply unit 41 is a part for supplying water, and is a part for supplying water introduced from the water supply port 41d to the throttle unit 42. A water supply means (water supply hose or the like) (not shown) can be connected to the water supply port 41d, and water supplied from the water supply means is supplied from the water supply part 41 to the throttle part 42.

  The throttle part 42 is provided on the downstream side of the water supply part 41, and is a part for reducing the flow passage cross-sectional area of the water supply part 41 and injecting the passing water downstream. A throttle channel 421 is formed in the throttle unit 42.

  The air mixing part 43 is provided on the downstream side of the throttle part 42, and an opening 431 and an air flow path 431a are formed for mixing air into water jetted through the throttle part 42 to form bubble mixed water. It is a part that has been.

  The water discharge part 44 is provided in the downstream of the air mixing part 43, and is the part in which the several water sprinkling hole 443 for discharging bubble mixing water is formed.

  In the shower device F <b> 1, the air mixing rate of the bubble mixed water is periodically changed by periodically changing the traveling direction of the water jetted from the throttle channel 421 in the air mixing unit 43. Due to the periodic fluctuation of the air mixing rate, the water discharge becomes a pulsating state, and the user can obtain a sense of irritation.

  Next, the principle of periodically changing the air mixing rate will be described with reference to FIGS. 4, 5, 6, and 7 are enlarged views in the vicinity of the throttle channel 421, and are diagrams illustrating a time-series manner in which the air mixing rate varies. FIG. 4 is a diagram illustrating an initial stage in which water starts to be ejected from the throttle channel 421. FIG. 5 is a diagram illustrating a state in which the air mixing rate is increased from the state illustrated in FIG. 4. FIG. 6 is a diagram illustrating a state in which the air mixing rate is further increased and maximized from the state illustrated in FIG. 5. FIG. 7 is a diagram illustrating a state in which the air mixing rate has decreased from the state illustrated in FIG. 6.

  First, as shown in FIG. 4, the water jetted from the throttle channel 421 travels along the inclined surface 421c toward the upper air channel 431a in the drawing to form a main water flow. Negative pressure is generated by the action of the main water flow injected from the throttle channel 421, and air is taken in from the air channel 431a through the opening 431. Due to the main water flow ejected from the throttle channel 421, the aeration unit 43 becomes full. There is a speed difference between the main water flow ejected from the throttle channel 421 and the water near the wall surface, and the traveling direction of the main water stream and the vortex chamber 432 are relatively separated from each other. Part of it returns to the vortex chamber 432. The water guided to the vortex chamber 432 generates a vortex side water flow.

  As described above, since the flow of air passing through the air flow path 431a and the flow of the vortex-shaped sub-water flow generated in the vicinity of the vortex chamber 432 are generated in parallel, the suction negative pressure and the sub-water flow negative pressure are respectively generated in the main water flow. Is generated. In the state shown in FIG. 4, the main water stream is approaching the air flow path 431a side (opening 431 side), so that the sub-water stream is generated so as to draw a large vortex. Therefore, the secondary water flow negative pressure is larger than the suction negative pressure. For this reason, the air mixing rate is low (the amount of air mixing is small) and the suction negative pressure is large, but the main water flow is larger than the main water flow due to the side water flow negative pressure. Will be pulled.

  Subsequently, as shown in FIG. 5, the main water flow caused by the water jetted from the throttle channel 421 changes its traveling direction toward the vortex chamber 432. In the state shown in FIG. 5, the main water flow is separated from the air flow path 431 a, so that room for the air introduced from the air flow path 431 a is increased, and more air is introduced into the air mixing unit 43. On the other hand, since the main water stream is approaching the vortex chamber 432 side, the secondary water stream is generated so as to draw a small vortex. Therefore, the substream negative pressure is smaller than that in the state of FIG. The air mixing rate increases moderately, and the amount of air mixing increases moderately. Since the main water flow has an inertia that changes the traveling direction from the state of FIG. 4 to the vortex chamber 432, the traveling direction of the main water flow continues to change toward the vortex chamber 432.

  Subsequently, as shown in FIG. 6, the main water flow caused by the water jetted from the throttle channel 421 brings its traveling direction closest to the vortex chamber 432 side. In the state shown in FIG. 6, the main water flow is farthest from the air flow path 431 a, the room for the air introduced from the air flow path 431 a is maximized, and more air is introduced into the aeration unit 43. On the other hand, since the main water stream is closest to the vortex chamber 432 side, the secondary water stream is generated so as to draw a smaller vortex. Accordingly, the sub-water flow negative pressure is the smallest, and the force that draws the main water flow due to the sub-water flow negative pressure is hardly applied. Therefore, although the suction negative pressure is also in the smallest state, the force that draws the main water flow is acting, and the main water flow tends to be jetted along the inclined surface of the throttle channel 421c. It will be pulled to the path 431a side.

  Subsequently, as shown in FIG. 7, the main water flow caused by the water ejected from the throttle channel 421 changes its traveling direction from the vortex chamber 432 side to the air channel 431a side. In the state shown in FIG. 7, since the main water flow approaches the air flow path 431a, the room for the air introduced from the air flow path 431a to enter is smaller than the state of FIG. 6 (larger than the state shown in FIG. 5), A moderate amount of air is introduced into the aeration unit 43. On the other hand, since the main water flow is away from the vortex chamber 432 side, the secondary water flow is generated so as to draw a large vortex. Accordingly, although a force that draws the main water flow due to the sub-water flow negative pressure acts, the main water flow has an inertia that changes the direction of travel from the state of FIG. 6 to the air flow path 431a. Continue to change to the road 431a side. When the state shown in FIG. 7 further proceeds, the state returns to the state shown in FIG. 4 and the above-described cycle is repeated.

  The photograph which image | photographed the internal state at the time of passing water through the shower apparatus F1 comprised by the operation | movement principle mentioned above is shown to (A) and (B) of FIG. FIG. 8A is a photograph of an actual water flow state as described with reference to FIG. 4, and FIG. 8B is an actual state as described with reference to FIG. This is a photograph of the water flow condition.

  The photograph which image | photographed the state at the time of discharging water from the shower apparatus F1 comprised by the operating principle mentioned above is shown in FIG. As shown in FIG. 9, when water is discharged from the shower apparatus F1, water discharged with a small amount of air and a large amount of water and water discharged with a large amount of air and a large amount of water are alternately repeated to form pulsating water discharge. On the other hand, even in the shower device F2 that does not mix air, the pulsating water discharge as in the present embodiment is not realized in the shower device F3 that mixes air but does not generate pulsating water discharge.

  As described above, the shower apparatus F1 according to the present embodiment is a shower apparatus that discharges bubble-mixed water in which air is mixed, and is provided on the downstream side of the water supply section 41 and the water supply section 41 that supplies water, The flow passage cross-sectional area is smaller than that of the water supply portion 41, the flow velocity of the passing water is increased, and the throttle portion 42 that is jetted downstream as the main water flow is provided on the downstream side of the throttle portion 42, and air is mixed into the main water flow An air mixing portion 43 in which an opening 431 and an air flow path 431a for forming bubble mixed water are formed, and a plurality of water spray holes provided on the downstream side of the air mixing portion 43 for discharging the bubble mixed water The water discharge part 44 in which 443 is formed.

  The shower apparatus F1 forms an inclined surface 421c that directs the traveling direction of the main water stream toward the air flow path 431a and a sub-water stream as a sub-water stream forming means for forming a sub-water stream having a traveling direction different from that of the main water stream. And a vortex chamber 432 for further promotion. The shower apparatus F1 changes the amount of air mixed in the main water flow in the air mixing unit 43 by periodically changing the traveling direction of the main water flow by the action of the sub-water flow.

  According to the present embodiment, air is mixed into the main water flow ejected from the throttle unit 42 in the air mixing unit 43 to form bubble mixed water, and the bubble mixed water is discharged from the water discharge unit 44. A certain water discharge can be enjoyed. Furthermore, a sub-water flow forming means is provided, and a sub-water flow having a traveling direction different from that of the main water flow is formed by the sub-water flow forming means. Since the traveling direction of the main water flow is periodically changed by the action of the sub-water flow (see FIG. 8), the amount of air mixed in the main water flow in the air mixing unit 43 can be changed (FIG. 9). reference). By changing the amount of air mixed in, the instantaneous flow rate of the bubble mixed water discharged from the water discharge section changes greatly, and the strength of the water flow that hits the user is generated. When the mixing rate of air is high, the discharge speed of the bubble-containing water increases, so it catches up with the downstream water and then reaches the user. Therefore, compared with the case where the amount of mixed air is constant, the amount of water landing on the user is increased, so that it feels that a strong water flow has been hit.

  In the present embodiment, the water discharge that gives the pulsating stimulus as described above is realized by forming a secondary water flow that periodically changes the traveling direction of the main water flow. There is provided a shower apparatus F1 that can provide a comfortable stimulus for a user with a simple configuration without separately providing a pump for changing the position.

  Moreover, in this embodiment, a subwater flow formation means forms a subwater flow so that a subwater flow negative pressure may be generated in the vicinity of the main water flow.

  In order to change the traveling direction of the main water flow by the sub-water flow, it is a simple and reliable method to generate pressure fluctuations caused by the sub-water flow in the vicinity of the main water flow. In the case of the present embodiment, as described above, air is taken in from the opening 431 and the air flow path 431a of the air mixing part 43 to form the bubble mixed water, so that the air mixing part 43 is in a negative pressure state. . Therefore, in this preferred embodiment, the traveling direction of the main water flow is periodically changed by generating a sub-water flow negative pressure in the vicinity of the main water flow so as not to reduce the negative pressure in the aeration unit 43.

  Further, in the present embodiment, the auxiliary water flow forming means forms the auxiliary water flow by the main water flow injected into the aeration unit 43.

  As described above, since the sub-water flow is formed by the main water flow, the traveling direction of the main water flow can be periodically changed with a simpler configuration without separately providing a special mechanism for generating the sub-water flow.

  Further, in the present embodiment, the suction negative pressure generated for sucking air from the opening 431 to the air mixing part 43, the force to be injected along the inclined surface of the throttle part 421c, and the sub-water flow negative pressure The traveling direction of the main water flow is periodically changed by the pressure difference, and the sub water flow forming means changes the sub water flow negative pressure by the action of the sub water flow to change the pressure difference (FIGS. 4 to 7). reference).

  If attention is paid only to changing the traveling direction of the main water flow, it is sufficient that a negative pressure acting in a direction intersecting with the traveling direction of the main water flow is generated, and air is sucked from the opening 431 in order to generate bubble mixed water. It is also conceivable to change the traveling direction of the main water flow only by the fluctuation of the suction negative pressure generated at the time. However, if it is attempted to change the traveling direction of the main water flow only by the action of the suction negative pressure, it is assumed that the pressure balance due to the fluctuation of the suction negative pressure and the main water flow is balanced and the movement of the main water flow stops. Therefore, since the traveling direction of the main water flow is periodically changed by the pressure difference between the suction negative pressure and the substream negative pressure, the suction negative pressure and the substream negative pressure interact with the main water flow. It is possible to prevent the main water flow from stopping due to balance. As described above, the traveling direction of the main water stream is changed by changing the sub-stream water pressure, so that the traveling direction of the main water stream can be periodically changed with a simpler configuration.

  In the present embodiment, the auxiliary water flow forming means has a vortex chamber 432 serving as a guide for forming the auxiliary water flow into a spiral flow.

  In this way, the vortex chamber 432 serving as a guide for forming the auxiliary water flow is provided, and therefore the vortex flow forming the auxiliary water flow can be increased or decreased depending on the size of the vortex chamber 432. . Therefore, the size of the vortex chamber 432 can be adjusted according to the amount of negative pressure required for the secondary water flow negative pressure generated by the secondary water flow, and an appropriate secondary water flow negative pressure can be generated.

  In the present embodiment, the vortex chamber 432 is provided on the opposite side of the opening 431 and the air flow path 431a across the main water flow and at a position facing the opening 431 and the air flow path 431a.

  In this way, the vortex chamber 432 that generates the sub-water flow negative pressure, the opening 431 that generates the suction negative pressure, and the air flow path 431a are formed at opposing positions. The opposite direction of the main water flow can be generated and the traveling direction of the main water flow can be changed periodically.

  In the present embodiment, the vortex chamber 432 is provided at the end of the aeration unit 43 on the throttle unit 42 side.

  In the present embodiment, the end of the air mixing part 43 on the throttle part 42 side is closest to the main water flow injection side and is the place where the flow speed of the main water flow is the fastest. Thus, since the vortex chamber 432 is formed at the place where the flow velocity of the main water flow is the fastest, the flow velocity of the vortex flow is also increased, and a larger sub-water flow negative pressure can be generated.

  Moreover, in this embodiment, it is also preferable that the throttle part 42 inclines the direction which injects a main water flow toward the opening 431 and the air flow path 431a side rather than the position where a substream is formed.

  Thus, since the direction in which the main water flow is injected is inclined toward the opening 431 and the air flow path 431a, the traveling direction of the main water flow injected from the throttle portion 42 is inclined toward the opening 431 and the air flow path 431a (see FIG. 4 and FIG. 8). When a sub-water flow is formed by jetting the main water flow, a sub-water negative pressure is generated. Therefore, the traveling direction of the main water flow inclined toward the opening 431 and the air flow path 431a can be inclined toward the sub-water flow side (FIG. 5 and FIG. 8). Thus, by pulling the traveling direction of the main water stream inclined in advance toward the opening 431 and the air flow path 431a toward the auxiliary water stream, the fluctuation range of the traveling direction of the main water stream can be increased, and the amount of air mixed in can be increased. Variations can also be increased. Accordingly, the fluctuation range when the physically strong water flow and the weak water flow are hit is increased, and the user can receive a stronger pulsating stimulus.

  In the present embodiment, the main water flow is formed so as to be a water flow that does not allow the air sucked from the opening 431 and the air flow path 431a to enter the auxiliary water flow side.

  As described above, the air sucked from the opening 431 and the air flow path 431a by the main water flow is prevented from entering the sub water flow side, so the sub water flow is formed more stably and the stable sub water flow negative pressure is generated. can do.

FIG. 10 shows the flow when the pulsation is stopped and the steady state is reached. As shown in FIG. 10, in the present embodiment, the water jetted from the throttle channel 421 travels along the inclined surface 421c toward the upper air channel 431a in the drawing to form a main water flow. A negative pressure is generated by the action of the main water flow injected from the throttle channel 421, and the opening variable valve 500 provided in the middle of the opening 431 and the air channel 431a from the air channel 431a can change the channel cross-sectional area. Air is taken in through. Due to the main water flow ejected from the throttle channel 421, the aeration unit 43 becomes full. There is a speed difference between the main water flow ejected from the throttle channel 421 and the water near the wall surface, and the traveling direction of the main water stream and the vortex chamber 432 are relatively separated from each other. Part of it returns to the vortex chamber 432. The water guided to the vortex chamber 432 generates a vortex side water flow.

As described above, the flow of air passing through the air flow path 431a and the variable opening valve 500 and the flow of the vortex-shaped sub-water flow occurring in the vicinity of the vortex chamber 432 are generated in parallel, so that the suction negative pressure and the sub-water flow are respectively generated. Negative pressure is generated across the main water stream. In the state shown in FIG. 10, since the main water flow is approaching the air flow path 431a side (opening 431 side), the secondary water flow is generated so as to draw a large vortex.

In the embodiment of the present invention, a valve capable of changing the cross-sectional area of the flow path is provided in the middle of the air flow path 431a. This valve can change the opening degree in multiple stages, and can adjust the amount of intake air passing through the air flow path 431a. By adjusting the amount of suction air, the pulsation can be stopped by setting the suction negative pressure to be equal to or higher than the auxiliary water flow negative pressure. Further, since the variable opening valve 500 can arbitrarily adjust the amount of suction air, it can easily switch between the case of applying pulsation and the case of stopping.

Next, a modification of the present invention will be shown.
According to the present invention, by changing the magnitude of the fluctuation amplitude of the suction air amount, the cycle of the bubble mixed water discharged from the discharge unit 44 can be changed, and the pulsation can be stopped, that is, the cycle can be made zero.

Further, by increasing the cycle, it is not possible to feel the intensity of stimulation when the discharged bubble-mixed water reaches the human body, and the same effect as the pulsation stop can be obtained.

By increasing the force with which the main water flow is drawn to the sub-water flow negative pressure side, the traveling direction of the main water flow can be made steady. By increasing the contact area between the substream negative pressure generated in the vortex chamber 432 and the main stream, it is possible to increase the force that the main stream receives from the substream negative pressure and to make the main water stream travel in a steady direction. .

The traveling direction of the main water flow can be made steady by reducing the force with which the main water flow is attracted to the sub-water flow negative pressure side. By making the vortex chamber 432 small, it is possible to reduce the force that the main water flow is attracted to the sub-water flow negative pressure side, and it is possible to make the traveling direction of the main water flow constant.

By increasing the water flow resistance downstream of the throttle section 42, the traveling direction of the main water flow can be made steady. By reducing the opening area of the discharge part 44, the water flow resistance downstream of the throttle part 42 increases, the internal pressure downstream of the throttle part 42 increases, and the main water flow is inhibited from changing the traveling direction. It is possible to make the traveling direction of the water flow steady.

In a state where the traveling direction of the main water flow periodically varies, the traveling direction of the main water flow can be made steady by increasing the opening area of the throttle port 42d. By increasing the opening area of the throttle port 42d, the magnitude balance between the suction negative pressure and the auxiliary water flow negative pressure is lost, and the traveling direction of the main water flow can be made steady.

In a state where the traveling direction of the main water flow periodically varies, the traveling direction of the main water flow can be made steady by reducing the opening area of the throttle port 42d. By reducing the opening area of the throttle port 42d, the magnitude balance between the suction negative pressure and the auxiliary water flow negative pressure is lost, and the traveling direction of the main water flow can be made steady.

The pulsation imparting means can also utilize a water flow separation phenomenon in the throttle portion 42.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

F1: Shower device 4: Body 4A: Cavity 4Aa: Contact surface 4Ab: Concave portion 4Ac: Concave portion 4Ad: Through hole 4B: Shower plate 4Ba: Contact surface 4Bb: Through hole 4D: Introduction piece 4Da: Large diameter portion 4Daa: Spear Portion 4Db: Small diameter portion 4E: Sealing piece 4a: Upper surface 4b: Lower surface 41: Water supply portion 41d: Water supply port 42: Restriction portion 42d: Restriction port 42e: Water guiding recess 421: Restriction flow path 421b: End surface 421c: Inclined surface 43 : Air mixing part 431: Opening 431 a: Air flow path 432: Vortex chamber 44: Water discharge part 44 a: Side wall 44 b: Side wall 44 c: Side wall 443: Sprinkling hole 500: Opening variable valve F2: Shower device F3: Shower device

Claims (4)

A shower device that discharges air mixed with air bubbles,
A water supply section for supplying water;
A throttle part provided on the downstream side of the water supply part, reducing the flow passage cross-sectional area than the water supply part, increasing the flow rate of the passing water and injecting it downstream as the main water stream,
Air mixing provided on the downstream side of the throttle unit and having an air introduction port for introducing air, and by introducing the air introduced from the air introduction port into the main water flow by the ejector effect to generate bubble mixed water And
A water discharger that is provided downstream of the aeration unit, and discharges the bubbled water;
Wherein from front Symbol throttle section the periodically varying the amount of air mixed into the main water stream the traveling direction of the main water stream ejected to the aeration unit by which periodically varies, discharged from the water discharge portion Pulsation imparting means for performing pulsating water discharge by changing the instantaneous flow rate of the bubble-containing water,
The pulsation imparting means has a vortex flow forming portion that generates a vortex flow negative pressure capable of drawing the main water flow injected from the throttle portion to the aeration unit,
The eddy water flow forming unit is configured such that a vortex water flow is formed by the main water flow jetted from the throttle unit to the aeration unit, and the jet unit is jetted from the throttling unit to the aeration unit The vortex water flow negative pressure is configured to become smaller as the main water flow is drawn toward the vortex water flow forming portion side,
Furthermore, the vortex water flow forming part is provided on the opposite side of the air inlet with the main water flow injected from the throttle part to the air mixing part,
The restricting portion injects the main water flow injected from the restricting portion to the air mixing portion between the air inlet and the vortex flow forming portion, and is injected from the restricting portion to the air mixing portion. The air introduced from the air inlet by the main water flow is prevented from entering the vortex water flow forming portion,
Furthermore, pulsation stopping means for making the amount of air mixed into the main water flow steady,
Switching means for switching between the operation of the pulsation applying means and the operation of the pulsation stopping means;
A shower apparatus comprising:   The pulsation stopping means makes the amount of air mixed into the main water flow steady by stopping fluctuations in the traveling direction of the main water flow injected from the throttle unit to the air mixing unit. The shower device according to claim 1. The switching means is configured to change an intake negative pressure generated on the air inlet side across the main water flow,
The pulsation stop means constantly generates a large intake negative pressure compared to when the pulsation imparting means is operated by the switching means, so that the traveling direction of the main water flow is caused by the vortex water flow negative pressure generated in the vortex water flow forming portion. The shower device according to claim 2, wherein the shower device is configured to prevent fluctuation.   The switching means switches the operation of the pulsation applying means and the operation of the pulsation stopping means by changing the opening of the air introduction port, and the pulsation stopping means compared to when the pulsation applying means is operated. 4. The shower apparatus according to claim 3, wherein the opening degree of the air inlet is reduced when the operation is performed.