JP6241815B2 - Water discharge device - Google Patents

Description

  The present invention relates to a water discharger that discharges hot water while reciprocatingly vibrating.

  The following Patent Documents 1 to 3 describe a water discharge device using an oscillation phenomenon caused by a fluid element. According to these water discharging apparatuses, since the injection direction of water discharging can be changed without providing a movable member, there is an advantage that a water discharging apparatus capable of discharging water over a wide range can be realized with a simple and compact configuration.

  In the water discharge device described in Patent Document 3 below, as shown in FIG. 13, the fluid first flowing into the front chamber 110 from the inlet hole 114 is an obstacle 116 having a triangular cross section provided in an island shape in the front chamber 110. Collide with. When the fluid collides, Karman vortices are alternately generated on the upper and lower sides of the obstacle 116 on the downstream side of the obstacle 116 to form a vortex street. The Karman vortex street reaches the outlet 112 while growing. In the vicinity of the outlet 112, the flow velocity on the side where the vortex of the vortex row exists is fast, and the flow velocity on the opposite side is slow. In the example shown in FIG. 13, Karman vortices are alternately generated on the upper side and lower side of the obstacle 116, and this vortex row sequentially reaches the outlet 112. The state where the lower flow velocity is fast appears alternately. In a state where the upper flow velocity is high, the fluid having a high flow velocity collides with the wall surface 110a on the upper side of the outlet 112 and changes its direction, and the fluid ejected from the outlet 112 becomes a jet flow directed obliquely downward as a whole. On the other hand, in a state where the lower flow velocity is high, the fluid having a high flow velocity collides with the wall surface 110b below the outlet 112, and a jet directed obliquely upward is ejected from the outlet 112. By repeating such a state alternately, the jet flow from the outlet 112 is jetted while reciprocating. According to the water discharge device of this system, it is possible to realize a water discharge device capable of discharging water over a wide range with a very simple and compact configuration.

JP 2000-120141 A JP 2004-275985 A Japanese Patent Publication No.58-49300

  However, when the water discharge device described in the above Patent Documents 1 to 3 is used for a long time in an area where a lot of calcium component is contained in tap water, the calcium component is generated by solidifying on the inner wall surface of the water discharge port. Scale adheres. Thus, when a scale adheres to the inner wall surface of a water discharge port, the vibration width of a water discharge, a vibration period, etc. will change, and the subject that desired water discharge cannot be implement | achieved will arise. Although it is difficult to remove the scale with the force of only the water flow, it is possible to remove the scale by physically rubbing or deforming the wall surface to which the scale is attached. For this reason, it is preferable that the water discharge port portion is formed of a soft member that can be elastically deformed, and is attached to the water discharge device main body so that the user can deform the water discharge port portion.

  However, if the water discharge port portion is formed of an elastically deformable soft member, when a high water pressure is applied to the inner wall surface of the water discharge port during large flow discharge, the inner wall surface of the water discharge port may expand and deform due to the water pressure. In a water discharge device using a fluid element, the amplitude of water discharge is finally defined by a water discharge port. For this reason, when the dimension of the inner wall surface of the water discharge port increases due to expansion deformation, the water discharge may not have a desired amplitude.

  For the above problem, a method of increasing the strength of the entire water discharge port and making the inner wall surface of the water discharge port difficult to expand and deform is also conceivable, but when this method is used, the user can remove the scale when removing the scale. This is not preferable because it becomes difficult to deform and the maintainability deteriorates.

  The present invention has been made in view of such problems, and its purpose is to reduce the maintainability of the scale in a fluid element having a water discharge port formed of a soft member, and at the time of water discharge. An object of the present invention is to provide a water discharge device capable of preventing a water discharge port portion from expanding and deforming due to water pressure and preventing desired vibration water discharge.

In order to solve the above problems, the water discharge device according to the present invention, a water discharge device main body, attached to the water discharge apparatus main body, and the vibration generating device having the ejection water inlet passage for discharging while the hot water supplied by reciprocating movement ,have. Furthermore, the water outlet passage is formed of an elastically deformable soft member, and is attached to the water discharge device main body so that a user can perform a deformation operation on the water outlet passage. Further, the spout passage has a pair of first wall surface portions opposed to the direction in which the hot water reciprocates and a pair of second wall surface portions opposed to the direction orthogonal to the direction in which the hot water reciprocates. The first wall surface portion has a wall thickness larger than that of the second wall surface portion.

  According to the present invention, since the hot water discharged from the water discharge device can be reciprocally vibrated by the vibration generating element, the hot water can be discharged from a single water discharge port to a wide range with a compact and simple structure. In addition, since the direction of water discharge can be changed without moving the nozzle to be discharged, there is no problem such as wear of movable parts, and a highly durable water discharge device can be configured at low cost. Further, the scale attached to the inner wall surface of the water outlet passage can be easily removed by the user by deforming the water outlet passage. Furthermore, by increasing the thickness of the first wall surface that contributes to defining the amplitude of water discharge, the strength of the first wall surface increases (becomes difficult to deform), and the first wall surface expands and deforms due to the water pressure during water discharge. Can be prevented. Furthermore, since the second wall surface is easily deformed by reducing the thickness of the second wall surface that does not contribute to defining the amplitude of water discharge, the maintainability of the scale can be improved. Thus, according to the present invention, in a fluid element having a water discharge port portion formed of a soft member, the water discharge port portion is inflated and deformed by the water pressure during water discharge without degrading the maintainability of the scale. It is possible to prevent the desired vibration water discharge from being impossible.

  Moreover, in the water discharging apparatus which concerns on this invention, it is also preferable that the opening width of the said water discharge channel | path is smaller than the opening width of the direction orthogonal to the direction where hot and cold water vibrates reciprocally.

  According to the present invention, by reducing the opening width in the direction orthogonal to the direction in which the hot water oscillates reciprocally, the first wall surface becomes more difficult to deform, so that the first wall surface expands and deforms due to the water pressure during water discharge. It can be prevented more reliably. Moreover, since the second wall surface is more easily deformed by increasing the opening width in the direction in which the hot and cold water vibrates, the maintainability of the scale can be improved.

  According to the present invention, in a fluid element having a water discharge port portion formed of a high-soft member, the water discharge port portion expands and deforms due to water pressure during water discharge without degrading the maintainability of the scale, and desired vibration. It is possible to provide a water discharging device that can prevent water from being discharged.

It is an external view of the water discharging apparatus 1 in this invention. It is a disassembled perspective view of the water discharging apparatus 1 in this invention. It is sectional drawing of the water discharging apparatus 1 in this invention. It is an external view of the vibration generating element 2 in this invention. It is the schematic diagram showing the mode of oscillation of water discharge in the present invention. It is an expanded sectional view near seal part 40 in the present invention. It is the schematic diagram showing the mode of the scale removal in this invention. It is sectional drawing of the watering nozzle 16 in this invention. It is the disassembled perspective view seen from the back side of the water discharging apparatus 1 in this invention. It is a schematic diagram when water pressure is applied to the vibration generating element 2 in the comparative example. It is a schematic diagram when water pressure is applied to the vibration generating element 2 in the example of the present invention. It is a schematic diagram when the hydraulic pressure of the vibration generating element 2 in the modification of this invention is applied. It is a figure which shows the structure of the fluid element described in patent document 3. FIG.

Below, the water discharging apparatus 1 in the Example of this invention is demonstrated, using drawing.
FIG. 1 is an external view of a water discharge device 1 according to the present invention. The water discharge device 1 is a so-called hand shower, and includes a water discharge device body 10 and a vibration generating element 2 provided in the water discharge device body 10. The water discharge device main body 10 is largely composed of a water discharge head 12 and a grip 14. The water discharge head 10 is provided with two types of water discharge ports, that is, a plurality of water discharge nozzles 16 and the vibration generating element 2, so that water discharge can be performed simultaneously or by switching.

FIG. 2 is an exploded perspective view of the water discharge device 1 according to the present invention. The water discharge head 12 includes a water spray plate 4 provided on the surface, a vibration generating element 2, and a water spray packing 4 made of a soft material having a water discharge nozzle 16. The water spray plate 18 is provided with a plurality of openings, and the vibration generating element 2 and the water discharge nozzle 16 are assembled from the openings so as to protrude from the surface.

FIG. 3 is a cross-sectional view of the water discharge device 1 according to the present invention. As shown in FIG. 3, the water spray packing 4 is fixed so as to be sandwiched between the water discharge head body 120 and the water spray plate 18. In addition, a water supply channel 140 is formed inside the gripping part 14 and has a structure for supplying hot water supplied from a shower hose (not shown) to the water discharge head 12.

FIG. 4 shows an external view of the vibration generating element 2 in the present invention. The vibration generating element 2 has a substantially rectangular water discharge port, and is a nozzle that discharges water while reciprocally vibrating in the longitudinal direction of the rectangle. At this time, it has a pair of first wall surface parts 242 in the longitudinal direction side that coincides with the direction in which the hot water oscillates reciprocally, and a pair of second wall surface parts 244 in the transverse direction side that goes straight. The portion 242 is thicker than the second wall surface portion 244.

FIG. 5 is a schematic diagram showing the behavior of the vibration generating element 2 in the main body.
FIG. 5A is a cross-sectional view taken along the line AA in FIG. 4. As shown here, a passage having a rectangular cross section is formed inside the vibration generating element 2 so as to penetrate in the longitudinal direction. This passage is formed in order from the upstream side as a water supply passage 20, a vortex generation passage 22, and a water discharge passage 26. The water supply passage 20 is a straight passage having a rectangular cross section with a constant cross-sectional area extending from the inlet on the back side of the vibration generating element 2.

The vortex generating passage 22 is a passage having a rectangular cross section provided downstream of the water supply passage 20 so as to be continuous with the water supply passage 20 (without a step). That is, the water supply passage 20 to the vortex generation passage 22 have the same size and shape.
The water discharge passage 24 is a passage having a rectangular cross section provided downstream of the vortex generating passage 22 so as to be continuous with the vortex generating passage 22. The water discharge passage 24 is configured so that the length in the long side direction of the cross-sectional rectangle is shorter than that of the vortex generation passage 22, and the cross-sectional area is small.

A hot water collision part 26 is provided between the water supply passage 20 and the vortex generation passage 22. As shown in FIG. 5B (cross-sectional view taken along line BB in FIG. 4), the hot water / water impinging portion 26 is a triangle extending so as to connect wall surfaces (ceiling surface and floor surface) that oppose the height direction of the water supply passage 20. It is a columnar part and is arranged in an island shape at the center in the width direction of the water supply passage 20. The cross section of the hot water collision part 26 is formed in an isosceles triangle shape, and it arrange | positions so that two sides with equal length may go to a downstream. By providing this hot water / water collision portion 26, Karman vortices are generated in the vortex generation passage 22 on the downstream side thereof, and hot water discharged from the water discharge passage 26 is reciprocally vibrated.

In addition, the area of the surface where the hot water flowing from the water supply passage 20 collides in the hot water collision portion 26, that is, the channel cross-sectional area of the portion of the water supply passage 20 that is blocked by the hot water collision portion 26 is the spout. It is configured to be larger than the flow path cross-sectional area of the passage 24.

FIG. 6 shows an enlarged cross-sectional view of the water discharge head 12. As described above, the water spray packing 4 is fixed so as to be sandwiched between the water discharge head main body 120 and the water spray plate 18. At this time, the water spray packing 4 also serves as a seal member that seals between the water discharge head main body 120 and the water spray plate 18, and has a seal portion 40 that seals between the two. The seal portion 40 is structured to ensure water tightness by being pressed by both. If it is as it is, the deformation | transformation by press will spread over the soft water spray packing 4, and the vibration generating element 2 and the water discharge nozzle 16 will also be distorted and will affect water discharge. In order to suppress this, a deformation restricting portion 42 is provided in the vicinity of the seal portion 40. By the deformation restricting portion 42, the distortion of the seal portion 40 is bordered on the upstream side of the vibration generating element 2, so that the distortion of the vibration generating element 2 and the water discharge nozzle 16 is suppressed, and beautiful water discharge is maintained. It is.

In the vicinity of the vibration generating element 2, a part of the water spray plate 4 is arranged as a deformation regulating member 6 with a minute gap. As will be described later, the deformation restricting member 6 is provided to suppress the vibration generating element 2 from expanding due to water pressure. It should be noted that the minute gap is formed between the deformation regulating member 6 and the vibration generating element 2, so that when the water discharge device 1 is assembled, the vibration generating element 2 comes into contact with the deformation regulating member 6 and is damaged. Can be suppressed.

Next, the mechanism of scale removal in the present invention will be described with reference to FIG.
The scale is such that silica or calcium contained in tap water is gradually deposited on the wall surface of the water passage. In the water discharge device 1, as shown in FIG. 7A, the water discharge nozzle 16 and the water supply passage 20, the vortex generation passage 22 and the water discharge passage 24 in the vibration generating element 2 are gradually deposited and accumulated. . If scale adheres and precipitates at these locations, the generation of Karman vortices and the influence of water discharge will occur, so there is a possibility that vibration of water discharge and the water discharge itself will be disturbed.

At this time, as shown in FIG. 7B, force is applied with a finger or the like from the side surface of the water outlet passage 24 protruding from the surface of the water spray plate 18. Then, as shown in FIG. 7C, the deformation of the water discharge passage 24 is transmitted to the vortex generation passage 22 and the water supply passage 20, and the scale is peeled off by the deformation. When water is discharged in this state, as shown in FIG. 7D, the scale that has been peeled off is flowed to the outside and removed from the vibration generating element 2.

As shown in FIG. 8, the vibration generating element 2 is formed of a soft member as the water spray packing 4 integrally with the water discharge nozzle 16 and the seal portion 40. As a result, the deformation of the water discharge passage 24 of the vibration generating element 2 is propagated to the vortex generation passage 22 and the space between the water spray plate 18 and the water discharge head main body 120 is sealed without providing a separate seal member. It becomes possible to give the function of 1 to one member.

As shown in FIG. 9, the water spray packing 4 is provided with a plurality of vibration generating elements 2. At this time, the water packing 4 and the back surface of the water spray plate 18 are in contact with each other around the vibration generating elements 2 so as to act as a fixing portion. Thereby, when a force is applied so that the water discharge passage 24 of each vibration generating element 2 is deformed, a portion where the deformation is applied is limited to the vicinity of each vibration generating element 2. In other words, the force applied to the spout passage 24 can be used for the deformation of each vibration generating element 2, and the scale can be removed efficiently. If the fixing portion is not provided in this way, the force is absorbed by the deformation of the entire spray packing 4, and the vortex generation passage 22 may not be deformed well, and the scale may not be completely removed. is there.

FIG. 10 schematically shows a state in which water pressure is applied to the vibration generating element 2 in a proportional manner.
This comparison is that the deformation restricting member 6 is not provided as compared with the embodiment in the present invention. When water pressure is not applied, as shown in FIGS. 10 (a) and 10 (b), there is no deformation. However, if a certain level of water pressure is applied, the vibration generating element 2 made of a soft material is moved outward by the water pressure applied to the vortex generating passage 22 and the like, as shown in FIGS. It will be greatly deformed. Since the vibration of water discharge in the vibration generating element 2 changes depending on the size of Karman vortex generated in the vortex generation passage 22, if this portion changes greatly, there is a possibility that the intended water discharge cannot be performed. Further, as shown in FIG. 10 (d), the hot water / water impinging portion 26 is greatly pulled in the longitudinal direction because it is deformed so as to spread in the height direction, and may eventually be broken. .

On the other hand, FIG. 11 schematically shows a state when water pressure is applied to the vibration generating element 2 in the embodiment of the present invention. In the embodiment, the deformation regulating member 6 is provided in the vicinity of the vibration generating element 2. Accordingly, even when water pressure acts on the vibration generating element 2 made of a soft material, the deformation regulating member 6 can suppress the vibration generating element 2 from expanding. That is, even when a large water pressure is applied, the vibration generating element 2 can be maintained at a predetermined size.

FIG. 12 shows a vibration generating element 2 in a modification of the present invention. In this modified example, in order to prevent the vibration generating element 2 from expanding when water pressure is applied, a water pressure acting portion 60 is provided instead of the deformation regulating member of the embodiment. By providing this water pressure acting part on the side surface of the vortex generating passage 22 over the entire circumference, the water pressure acting in the direction of expanding the vortex generating passage 22 from the inside and the water pressure acting in the direction of reducing the diameter of the vortex generating passage 22 from the outside. And the expansion of the vibration generating element 2 can be suppressed as a result.

By configuring the vibration generating element 2 to suppress the expansion of the vibration generating element 2 as in the embodiments and modifications of the present invention, the vibration generating element 2 is made of a soft material so that the scale can be removed, and at the same time, high Even when the water pressure is applied, the predetermined dimensions can be maintained, the water discharge can be maintained, and the durability of the vibration generating element 2 can be improved.

As shown in FIG. 4, in the water discharge passage 24, the second wall surface portion 244 in the longitudinal direction is configured to be thicker than the first wall surface portion 242 in the short direction. This increases the durability of the first wall surface portion 242 that contributes to the formation of vibration by increasing the thickness of the first wall surface portion 242 in the longitudinal direction where the kinetic energy of vibration acts in addition to the action of water pressure, cracks, etc. Can be suppressed. Further, even when a high water pressure is applied to the water outlet passage 24 during water discharge, the first wall surface portion 242 can be prevented from being deformed, and vibration water discharge with a desired amplitude can be performed.
On the other hand, the second wall surface portion 244 can be configured to be thin, that is, easily deformed. As a result, even when the scale is removed by being deformed by a finger or the like, the scale can be deformed with a light force.

In the above, this invention was demonstrated using the Example. The present invention is not limited to the above-described embodiments, and can be appropriately designed without departing from the scope of the invention. For example, the type of water discharge may be only a vibration generating element, or a combination of three or four types of various nozzles may be used. Further, the vortex generating passage may be formed of a hard material and formed integrally with the water discharge passage.

Water discharge device 1
Water discharge device body 10
Water discharge head 12
Water discharge head body 120
Grip part 14
Water supply channel 140
Water discharge nozzle 16
Sprinkler 18
Vibration generating element 2
Water supply passage 20
Vortex generation passage 22
Spout passage 24
First wall surface part 242
Second wall surface portion 244
Hot water collision part 26
Sprinkling packing 4
Seal part 40
Deformation restriction part 42
Fixed part 44
Deformation restricting member 6
Hydraulic action part 60

Claims (2)

A water discharge device for discharging hot water while reciprocating vibrations,
A water discharge device body;
The water discharge device attached to the body, having a vibration generating element having the ejection water inlet passage for discharging while the hot water supplied by reciprocating movement,
The water outlet passage is formed of an elastically deformable soft member, and is attached to the water discharge device main body so that a user can deform the water outlet passage.
Furthermore, the spout passage has a pair of first wall surfaces facing the direction in which the hot water reciprocates and a pair of second wall surfaces facing in a direction orthogonal to the direction in which the hot water reciprocates,
The water discharge device according to claim 1, wherein the first wall surface portion is formed to have a wall thickness larger than that of the second wall surface portion.   2. The water discharge device according to claim 1, wherein an opening width in a direction orthogonal to a direction in which the hot water reciprocates is smaller than an opening width in a direction in which the hot water reciprocates.

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