JP6079994B2 - Shower equipment - Google Patents

Description

  The present invention relates to a shower apparatus.

  In this technical field, a shower device is known in which air is mixed into water using the so-called ejector effect and discharged as bubble-containing water. Since the shower device disperses water flowing into the device into a plurality of water spray holes and discharges water, when air is mixed into the discharged water, air is mixed into the water flowing into the device. It is comprised so that it may disperse | distribute to each watering hole.

  As an example of such a shower device, a shower device as described in Patent Document 1 has been proposed. The shower device described in Patent Document 1 below has a plurality of water spray holes provided on the front surface of the disk-shaped housing shell, and distributes water flowing from the center of the rear surface of the housing shell to the plurality of water spray holes. And discharged. In this shower device, after water flows into the housing shell, air is mixed to form bubble mixed water, and a plurality of water spray holes are formed so that the bubble mixed water is distributed over the entire front surface of the disk-shaped housing shell. Therefore, the turbulent flow generating expansion part is arranged in the traveling direction of the bubble mixed water, and the bubble mixed water collides with the turbulent flow generating expanded part to change the direction, and the bubble mixed water is transferred to the housing shell. I try to spread all over the front.

  In the shower device described in the above-mentioned Patent Document 1, water droplets with non-uniform particle diameters are formed by supplying and discharging bubble-mixed water with non-uniform bubble diameters to the sprinkling holes, and water droplets with non-uniform particle sizes are used. It is thought that it applies to the person.

  In view of such a situation, the inventors of the present invention have sought to provide a shower device that enables shower water discharge with a comfortable feeling of bathing that has a sense of volume that is taking a large amount of rain. On the other hand, since the conventional technique described above realizes a feeling that water droplets with a non-uniform particle size hit the user, it provides a shower water discharge with a feeling of bathing that feels like a large amount of rain. It was not a thing.

  Therefore, the present inventors filed a patent application related to Patent Document 2 below in order to propose a non-stirring air mixing shower method in contrast to the above-described conventional stirring air mixing shower method.

JP-T-2006-509629 JP 2011-167640 A

  The shower apparatus described in Patent Document 2 includes (1) a water supply unit for supplying water, and (2) a flow passage cross-sectional area that is smaller than that of the water supply unit, and jets water that passes therethrough downstream. A throttle unit, (3) an air mixing unit in which air is mixed into the water jetted through the throttle unit to form bubble mixed water, and (4) to discharge the bubble mixed water. These watering holes are provided with a watering part that is formed along the jetting direction of the water jetted from the throttle part. In this shower apparatus, the water jetted from the throttle channel becomes a film-like water flow, and this film-like water flow is a gas-liquid interface between water and air temporarily stored in the air mixing part and the water sprinkling part. The bubble-containing water is generated by the film-like water flow involving the air taken in from the opening, and the generated bubble-containing water is discharged from the water spray holes.

  By the way, as described also in the embodiment of Patent Document 2, a rectangular or circular shape is known as the shape of the watering surface constituting the watering portion. A radial shower device with a circular water spray surface jets a jet of water radially, so the air inlet and the water sprayer are not partitioned by the high pressure part, and the water on the water sprayer side is on the air inlet side. Easy to back flow. For this reason, since the amount of suction air tends to decrease, in Patent Document 2 described above, by providing an orifice that opens over the entire circumference, the jet water flow has a substantially uniform velocity distribution over the entire downstream side of the orifice. The problem was solved by a method of preventing reverse flow by the jet water flow itself.

  However, in the case where a water discharge port of another water discharge mode such as a massage nozzle is provided at the center of the water spray surface, the circumferential length of the orifice is increased, and the total opening area of the orifice is increased. A new problem of reducing the amount of air occurs. In order to solve this new problem, in order to reduce the total opening area, it is preferable to arrange a plurality of orifices in the circumferential direction at intervals. However, with this configuration, it is impossible to solve the above-mentioned problem inherent to the radial type in which the water on the water sprinkling part side flows back to the air inlet side and the amount of suction air is reduced.

  The present invention has been made in view of such problems, and the object thereof is a non-stirred air mixing type radial shower device in which a water discharge port such as a massage nozzle is provided at the center of the water spray surface. However, an object of the present invention is to provide a shower device that can secure a large amount of suction air.

In order to solve the above problems, a shower apparatus according to the present invention is a shower apparatus that discharges air-mixed water in which air is mixed, and includes (1) a water supply unit for supplying water, and (2) the water supply A throttle part for accelerating the water supplied from the part and injecting it radially as an accelerated jet toward the downstream side, and (3) an air inlet provided on the downstream side of the throttle part for sucking air, An air mixing part that mixes air sucked from the air inlet into the accelerating jet to generate bubble mixed water; and (4) provided on the downstream side of the air mixing part for discharging the bubble mixed water. And (5) a backflow prevention wall for preventing water from flowing backward from the watering part side to the air inlet side .

In the narrowing part is more than juxtaposed plurality of mutually independent throttle channels spaced apart from each other in the circumferential direction. A plurality of connection flow paths that are water flow paths from the plurality of throttle flow paths ejected from the plurality of throttle flow paths to the water sprinkling section after passing through the aeration unit are radially formed from the throttle flow paths It is provided along the injection direction of the accelerated jet to be injected. A plurality of the backflow prevention walls are provided at intervals in the circumferential direction, and each of the backflow prevention walls is provided between each of the plurality of connection flow paths.

  In the present invention, since the connection flow path from the air mixing part to the water sprinkling part is provided along the injection direction of the acceleration jet injected radially from the constriction flow path, the acceleration jet flows between the air mixing part and the water sprinkling part. The pressure loss as a shower device can be reduced without colliding with the inner wall surface and greatly changing the direction. As a result, it is possible to increase the amount of suction air at low water pressure and low water volume. Further, in the throttle unit, a plurality of independent throttle channels are arranged side by side at a distance from each other. For example, even when a massage nozzle or the like is provided in the center of the sprinkling unit, the throttle channel The total opening area perpendicular to the jet traveling direction can be reduced, and the flow velocity of the acceleration jet can be increased. As a result, the amount of suction air can be increased.

  When a non-stirred air mixing method is adopted and an accelerated jet is jetted radially from the throttle channel, there is no water that is stirred and stays there, and no high-pressure part is formed between the watering part and the air inlet, The water spray part and the air inlet are not partitioned by the high-pressure part. Therefore, there is a new inherent problem that the water once supplied from the throttling part to the water sprinkling part through the air mixing part flows backward from the water sprinkling part side to the air inlet side, and the amount of suction air is greatly reduced. Therefore, in the present invention, a backflow prevention wall is provided between each of the plurality of connection flow paths between the air introduction port and the water sprinkling unit to prevent water from flowing back from the water sprinkling unit side to the air introduction port side. It is provided and the amount of suction air is prevented from greatly decreasing due to the water flowing backward from the water sprinkling part side.

  Moreover, in this invention, it is also preferable that the said backflow prevention wall is separated in the downstream from the said air inlet, and is provided near the said water sprinkling part side rather than the said air inlet.

  In this preferred embodiment, the backflow prevention wall is provided closer to the water sprinkling part than the air introduction port, and the position of the gas-liquid interface with respect to the air introduction port can be separated far away by separating it away from the air introduction port. A sufficient amount of air can be secured.

  Moreover, in this invention, it is also preferable that the said water spray hole is provided in the vicinity of the said backflow prevention wall.

  In this preferable aspect, by providing the water sprinkling hole in the vicinity of the backflow prevention wall, the backflow water colliding with the backflow prevention wall can be immediately discharged from the sprinkling hole. Thereby, it is possible to prevent the pressure near the gas-liquid interface from increasing due to the water flow colliding with the backflow prevention wall and shortening the distance of the gas-liquid interface with respect to the air inlet, so that the air mixing amount can be increased.

  In the present invention, it is also preferable that the aeration unit is provided with a separate aeration chamber for each of the plurality of throttle channels.

  In this preferable aspect, by providing a separate aeration chamber for each of the plurality of throttle channels, the cross-sectional area of the aeration chamber can be set to be optimal for the acceleration jet, and the acceleration The flow velocity of air sucked by the jet can be increased. Thereby, it can prevent more reliably that the water flow which collided with the backflow prevention wall flows back into the air inlet side against the flow of the suction air which flows through an air mixing chamber.

  ADVANTAGE OF THE INVENTION According to this invention, it is a non-stirred air mixing type radial shower device, and provides a shower device that can ensure a large amount of suction air even when a spout such as a massage nozzle is provided in the center of the watering surface. be able to.

It is a figure which shows schematic structure of the water discharging apparatus which is embodiment of this invention. It is sectional drawing which shows the cross section along a watering surface in the head part of the water discharging apparatus shown in FIG. It is sectional drawing which shows the II-II cross section of FIG. It is sectional drawing which shows the III-III cross section of FIG. It is a figure which shows the flow of the water in FIG. It is a figure which shows the flow of the water of the backflow prevention wall vicinity in FIG.

  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 referring FIG. FIG. 1 is a diagram showing a schematic configuration of a water discharging apparatus according to an embodiment of the present invention. As shown in FIG. 1, the water discharger SH includes a main body part SHa and a switching button SHb. The main body part Sha is composed of a handle part SHa1 and a head part SHa2.

  The sprinkling surface 2 of the head portion SHa2 is formed so as to face the discharge port of the spray water discharge channel portion SHc, the discharge port of the waterfall discharge channel portion SHd, and the discharge port of the massage water discharge channel portion SHe. In the case of the present embodiment, the spray water discharge channel portion SHc is provided so as to be scattered in a substantially circular region centered on the approximate center of the water spray surface 2, and the waterfall water discharge channel portion SHd is outside the spray water discharge channel portion SHc. Moreover, it is provided in the vicinity of the tip in an arc shape, and the massage water discharge channel portion SHe is provided near the center of the spray water discharge channel portion SHc.

  A switching button SHb is also provided on the watering surface, and water is discharged from the spray water discharge channel portion SHc, water discharged from the waterfall water discharge channel portion SHd, water discharged from the massage water discharge channel portion SHe by the switch button SHb, It is configured to be able to switch between.

  Next, the internal configuration of the head part SHa2 will be described with reference to FIG. FIG. 2 is a diagram showing an internal structure of the head portion SHa2, and is a cross-sectional view showing a cross section along the water spray surface 2. The internal flow path SHc1 is an internal flow path of the spray water discharge flow path portion SHc, and is a flow path for supplying water supplied from the handle portion SHa1 side to the water spray surface 2. The internal flow path She1 is an internal flow path of the massage water discharge flow path section She, and is a flow path for supplying water supplied from the handle portion Sha1 side to the water spray surface 2. The internal flow path SHd1 is an internal flow path of the waterfall water discharge flow path section SHd, and is a flow path for supplying water supplied from the handle portion SHa1 side to the water spray surface 2.

  Next, the configuration of the spray water discharge channel part SHc will be described in detail with reference to FIG. FIG. 3 is a cross-sectional view showing a II-II cross section of FIG. A throttle portion 42 is formed so as to be connected to the internal flow path SHc1. A throttle channel 421 is formed in the throttle unit 42. A plurality of throttle channels 421 are formed radially.

  A plurality of water spray holes 443 are radially formed on the water spray surface 2. In the case of this embodiment, the water spray holes 443 are concentrically formed in three rows. A plurality of water spray holes 443a are formed as the first row in the foremost row on the most narrowed portion 42 side (center side). A plurality of water spray holes 443b are formed as a second row outside the water spray holes 443a. A plurality of water spray holes 443c are formed as a third row outside the water spray holes 443b.

  The water sprinkling part 44 is formed as an internal space connected to these water sprinkling holes 443 (water sprinkling holes 443a, 443b, 443c). An air mixing part 43 is formed so as to connect the watering part 44 and the throttle part 42.

  As described above, the head part SHa2 is configured to include the internal flow path SHc1 corresponding to the water supply part, the throttle part 42, the air mixing part 43, and the watering part 44.

  The internal flow path SHc1 corresponding to the water supply part is a part for supplying water, and is a part for supplying the water introduced from the head part SHa2 to the throttle part 42.

  The throttle part 42 is provided on the downstream side of the internal flow path SHc1 corresponding to the water supply part, reduces the flow cross-sectional area of the internal flow path SHc1 corresponding to the water supply part, and injects the passing water downstream. It is a part to do. The throttle section 42 is provided with a plurality of throttle channels 421.

  The air mixing unit 43 is provided on the downstream side of the throttle unit 42, and an air introduction port 431 is formed for mixing air into water jetted through the throttle unit 42 to form bubble mixed water. Part.

  The water sprinkling part 44 is provided in the downstream of the air mixing part 43, and is a part in which a plurality of water sprinkling holes 443 for discharging bubble mixed water are formed. An outer wall 441 is formed on the outermost peripheral portion of the water sprinkling portion 44.

  FIG. 4 shows a III-III cross section of FIG. As shown in FIG. 4, a plurality of throttle channels 421 are arranged circumferentially. One air inlet 431 is provided so as to correspond to one throttle channel 421.

  One aeration chamber 432 is provided so as to correspond to one throttle channel 421 and one air inlet 431. An air mixing portion 43 is formed by the air inlet 431 and the air mixing chamber 432.

  A backflow prevention wall 451 is provided in the vicinity of the front watering hole 443a. The backflow prevention wall 451 is formed between the adjacent aeration chambers 432 and is arranged on the upstream side of each water sprinkling hole 443a.

  The accelerated jet injected from the throttle channel 421 enters the gas-liquid interface formed in the vicinity of the backflow prevention wall 451 and takes in the air introduced from the air inlet 431 in the air mixing chamber 432 to form bubble mixed water. To do. FIG. 5 shows how the acceleration jet flow AFa flows.

  As shown in FIG. 5, the accelerated jet flow AFa ejected from the throttle channel 421 passes through the air mixing chamber 432, enters the water sprinkling unit 44, and collides with the outer wall 441. The acceleration jet flow AFa hitting the outer wall 441 flows backward and flows as a reflected flow AFb on the upstream side where the aeration chamber 432 and the water spray hole 443a are formed.

  FIG. 6 is a diagram illustrating a state in which the reflected flow AFb hits the backflow prevention wall 451. As shown in FIG. 6, the reflected flow AFb that has flowed back to the upstream side has less energy to advance than the acceleration jet flow AFa, and the aeration chamber 432 is formed to be slightly larger than the acceleration jet flow AFa. Therefore, the air does not enter the aeration chamber 432 and hits the backflow prevention wall 451.

  The reflected flow AFb hitting the backflow prevention wall 451 again flows toward the outer wall 441 side and is discharged to the outside from the water sprinkling hole 443a in the vicinity. Therefore, it is possible to suppress an increase in water pressure in the vicinity of the backflow prevention wall 451 where the gas-liquid interface is formed.

  As described above, the water discharge device SH (shower device) according to the present embodiment is a shower device that discharges air-mixed water in which air is mixed, and (1) a handle that is a water supply unit for supplying water Part SHa1, (2) a throttle part 42 that accelerates the water supplied from the handle part Sha1 and injects it radially as an accelerated jet toward the downstream side, and (3) provided downstream of the throttle part 42, An air mixing part 43 that has an air introduction port 431 for sucking air, mixes air sucked from the air introduction port 431 into the acceleration jet AFA, and generates bubble mixed water; (4) downstream of the air mixing part 43 And a water sprinkling part 44 formed with a water sprinkling surface 2 provided with water sprinkling holes 443 for discharging bubble-mixed water.

  In the throttle section 42, a plurality of mutually independent throttle channels 421 are arranged in a circle in a spaced manner from each other. A plurality of air mixing chambers 432 serving as connection flow paths from the air mixing section 43 to the water sprinkling section 44 are provided along the injection direction of the accelerated jet AFa radially injected from the throttle flow path 421. Between each of the plurality of aeration chambers 432 (connection flow paths), a backflow prevention wall 451 for preventing water from flowing back from the water sprinkling portion 44 side to the air introduction port 431 side is provided.

  In the present embodiment, the air mixing chamber 432 that is a connection flow path from the air mixing section 43 to the water sprinkling section 44 is provided along the injection direction of the accelerated jet AFa that is radially injected from the throttle flow path 421. Further, the acceleration jet AFa does not collide with the inner wall surfaces of the air mixing part 43 and the water sprinkling part 44 and change direction greatly, and the pressure loss as the water discharger SH can be reduced. As a result, it is possible to increase the amount of suction air at low water pressure and low water volume. Moreover, in the throttle part 42, since a plurality of mutually independent throttle channels 421 are arranged in parallel at intervals, the massage water discharge channel part SHe is provided at the center of the water spray part 44 as in the present embodiment. Even in such a case, the total opening area orthogonal to the jet flow direction of the throttle channel 421 can be reduced, and the flow velocity of the acceleration jet AFa can be increased. As a result, the amount of suction air can be increased.

  When the non-stirred air mixing method is adopted and the acceleration jet AFa is ejected radially from the throttle channel 421, there is no stagnated water and there is no high pressure section between the water sprinkling section 44 and the air inlet 431. The water spray part 44 and the air inlet 431 are not partitioned by the high-pressure part. Therefore, the water once supplied from the throttling part 42 to the water sprinkling part 44 side through the air mixing part 43 flows back from the water sprinkling part 44 side to the air introduction port 431 side, and this is a new unique feature. There is a problem. Therefore, in the present embodiment, water flows back from the water sprinkling part 44 side to the air inlet 431 side between each of the plurality of air mixing chambers 432 (connection flow paths) between the air inlet 431 and the water sprinkling part 44. The backflow prevention wall 451 for preventing it is provided, and it is preventing that the amount of suction air falls significantly with the water which flows backward from the water sprinkling part 44 side.

  In the present embodiment, the backflow prevention wall 451 is separated from the air introduction port 431 toward the downstream side, and is provided closer to the water sprinkling unit 44 than the air introduction port 431.

  In this way, the backflow prevention wall 451 is provided closer to the water spraying portion 44 side than the air introduction port 431, and the position of the gas-liquid interface with respect to the air introduction port 431 is separated far away by being separated from the air introduction port 431 to the downstream side. Therefore, a sufficient amount of air can be secured.

  In the present embodiment, a water spray hole 443 a is provided in the vicinity of the backflow prevention wall 451.

  By providing the water sprinkling hole 443a in the vicinity of the backflow prevention wall 451, the reflected flow AFb, which is the backflow water colliding with the backflow prevention wall 451, can be immediately discharged from the sprinkling hole 443a. Thereby, the pressure near the gas-liquid interface due to the water flow colliding with the backflow prevention wall 451 can be prevented and the distance of the gas-liquid interface with respect to the air inlet 431 can be prevented from being shortened, so that the amount of air mixing can be increased.

  In the present embodiment, the aeration unit 43 is provided with a separate aeration chamber 432 for each of the plurality of throttle channels 421, and the aeration chamber 432 exists as a connection channel, so that The technical idea that the flow paths are individually provided corresponding to the individual aeration chambers 432 is realized.

  A plurality of independent air mixing chambers 432 are individually provided for each of the plurality of throttle channels 421 so that the cross-sectional area of the air mixing chamber 432 is optimized with respect to the acceleration jet flow AFa. And the flow velocity of the air sucked by the acceleration jet AFa can be increased. Thereby, it is possible to more reliably prevent the reflected flow AFb, which is a water flow colliding with the backflow prevention wall 451, from flowing back to the air inlet 431 side against the flow of the suction air flowing through the air mixing chamber 432.

2: Sprinkling surface 42: Restriction part 43: Air mixing part 44: Sprinkling part 421: Restriction flow path 431: Air introduction port 432: Air mixing chamber 441: Outer wall 443: Sprinkling holes 443a, 443b, 443c: Sprinkling hole 451: Back flow Prevention wall AFa: Accelerating jet AFb: Reflected flow SH: Water discharger SHa: Main body part Shaa1: Handle part SHa2: Head part SHb: Switch button SHc: Spray water discharge flow path part SHc1: Internal flow path SHd: Waterfall water discharge flow path part SHd1: Internal channel SHe: Massage water discharge channel part She1: Internal channel

Claims (4)

A shower device that discharges air mixed with air bubbles,
A water supply unit for supplying water;
A throttle unit that accelerates the water supplied from the water supply unit and injects it radially as an accelerated jet toward the downstream side;
An air mixing part that is provided on the downstream side of the throttle part, has an air inlet for sucking air, and mixes air sucked from the air inlet into the acceleration jet to generate bubble mixed water;
A watering part provided on the downstream side of the air mixing part and having a watering surface on which watering holes for discharging the bubble mixed water are formed,
A backflow prevention wall for preventing water from flowing back from the water sprinkling part side to the air inlet side ,
In the narrowed portion, the multiple juxtaposed plurality of mutually independent throttle channels spaced apart from each other in the circumferential direction,
A plurality of connection flow paths that are water flow paths from the plurality of throttle flow paths ejected from the plurality of throttle flow paths to the water sprinkling section after passing through the aeration unit are radially formed from the throttle flow paths Provided along the injection direction of the accelerated jet to be injected,
A plurality of the backflow prevention walls are provided at intervals in the circumferential direction, and each of the backflow prevention walls is provided between each of the plurality of connection flow paths .   The shower apparatus according to claim 1, wherein the backflow prevention wall is provided downstream from the air introduction port and closer to the water sprinkling unit than the air introduction port.   The shower apparatus according to claim 1, wherein the water spray hole is provided in the vicinity of the backflow prevention wall.   The shower device according to claim 1, wherein the aeration unit is provided with a separate aeration chamber for each of the plurality of throttle channels.

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