JPH0351436A - Bubble shower discharge opening - Google Patents

Abstract

PURPOSE:To reduce water splash much more by screwing a spraying plate provided with a rectifying guide in the center onto the tip of a water discharge head having a bubble head on the inside, and loading a conetype rectifying ring between the bubble head and the spraying plate. CONSTITUTION:A spraying plate 3 provided with a rectifying guide 3d in the center is screwed onto the tip of a water discharge head 1 having a bubble head 4 consisting of nets, small holes, etc. A rectifying ring 5 whose passage is conical in cross section, is loaded between the bubble head 4 and the spraying plate 3. The cross sectional area of the ringshaped passage around the rectifying guide 3d is designed not to be sharply changed. Water splash can thus be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a foam shower spout that foams supplied water and prevents water from splashing during shower spraying.

[Conventional technology]

BACKGROUND ART Foaming faucets have traditionally been used to reduce the sound of water being supplied, the sound of water falling into a sink, etc., and to eliminate water splashing. FIG. 5 shows an example of a foam spout provided at the tip of the spout of a faucet for foaming.

FIG. 5(a) is a cross-sectional view schematically showing the one described in Japanese Patent Publication No. 63-31621 and other general foam spouts. In the figure, a pressure reducing plate 52 having a large number of small holes 52a is housed in a water discharge cap 5l fixed to the tip of a spout 50 of a faucet. An air hole 53 is opened in the peripheral wall of the water discharge cap 5l downstream of the pressure reducing plate 52 to introduce outside air into the water supply, and a plurality of rectifying networks 54 are arranged at the outlet for rectifying the flow. There is.

In such a foam spout, when the water supplied from the spout 50 passes through the small hole 52a of the pressure reducing plate 52, the flow speed is increased. For this reason, the water discharge cap 5 on the downstream side of the pressure reducing plate 52
1 is reduced in pressure, outside air is sucked in through the air port 53, and this air mixes into the water supply, thereby turning the flow into foam. Furthermore, since the mesh of the straightening net 54 is fine, the supplied water is vigorously agitated even when it collides with the straightening net 54 and flows away, so that foaming is further promoted.

FIG. 5(b) shows a pressure reducing plate 56 with a small hole 55 in the flow path.
This is an example in which a shower sprinkler plate 57 is provided downstream. The water that flows in from the small hole 55 is sent to the shower sprinkler plate 57.
It is foamed by the air sucked in from the gap around it,
A baffle board 59 such as a mesh or plate placed further downstream
After hitting the water, it is discharged from the water sprinkling hole 58. By the flow of the supplied water hitting this baffle plate 59, the supplied water is further agitated and foaming is promoted.

[Problem to be solved by the invention]

However, in the structure shown in FIG. 5(a), although the supplied water can be turned into foam, the supplied water that exits the water spouting cap 51 remains as one concentrated stream of water containing foam. For this reason, if the flow rate is increased, the water splash will also increase if the container or the like is washed close to the faucet.

On the other hand, in the shower water spray system shown in Fig. 5, etc., the flow line of the water supply is divided into a plurality of parts, so the degree of water splash when washing containers etc. is smaller than that of a single concentrated foam water discharge. However, since the foamed water that has passed through the small holes 55 is further discharged against the baffle plate 59, the streamlines of the foamed water are likely to be disturbed. For this reason, when the streamline hits the bottom of a kitchen sink or the bowl surface of a washbasin, water is likely to splash, making it less convenient to use.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to stabilize the foamy water so that it can be spouted, reduce water splash, and further improve usability.

[Means to solve the problem]

In order to achieve the above object, the foam shower spout of the present invention includes a water spout head connected to a water supply source, a foam head for foaming water supply, and a shower water spout disposed downstream of the foam head. A water teaching plate is provided, the discharge flow path from the foam head to the water sprinkling plate is formed into a conical shape with a flow passage cross section that gradually becomes larger, and a flow rectification guide protruding from the water spray plate toward the foam head is coaxial with the discharge flow path. It is characterized by the fact that it is provided in

[Effect]

The water flowing into the water spouting head is turned into foam by a foam head provided in the flow path, flows to a downstream shower water sprinkling plate, and is divided into a plurality of streams through water sprinkling holes drilled in the water sprinkling plate and foamy water is spouted. The discharge flow path from the foam head to the water sprinkling plate has a conical cross section that gradually increases in size, and the area of the annular flow path around the rectifying guide that is coaxially arranged within this conical cross section increases rapidly. It expands without increasing or decreasing. For this reason, foamy water containing bubbles is not rapidly compressed or expanded, and a stable flow of foamy water can be obtained. Also,
If the part of the rectifying guide facing the foam head is formed into a spherical shape, the degree to which the flow of foamy water separates from the surface will be reduced, resulting in a smooth flow of foamy water rectified from the water sprinkling hole and sprayed in the shower.

〔Example〕

Hereinafter, features of the present invention will be specifically explained with reference to embodiments shown in the drawings.

FIG. 1 is a vertical cross-sectional view of a main part showing the foaming water spout of the present invention, and FIG. 2 is a bottom view thereof.

In the figure, a water spouting head 1 includes a main body 2 and a shower water sprinkling plate 3 integrated with the lower surface of the main body 2 by screws 3a, and is used by connecting the main body 2 to a faucet.

An inlet 2a for connecting to a flow path on the faucet side is opened in the side surface of the main body 2, and a flow path 2b communicating with this is formed between the water sprinkling plate 3 on the lower surface. Inside the main body 2, a foaming head 4 and a rectifying ring 5 are housed, respectively, for foaming the water supplied from the flow path 2b. The foam head 4 is inserted into a fixture 4a fixed to the main body 2,
The flow path 2b and the water sprinkling plate 3 are fixed in a coaxial arrangement by a holding fitting 4b integrated with the fixing fitting 4a.

The foam head 4 has a hollow cylindrical shape, and inside thereof, a net 6a, a pressure reducing plate 6C with a large number of small holes 6b, and a rectifying net 6d are arranged from upstream to downstream as in the conventional structure. has been done. A slit-shaped air hole 6e is formed in the peripheral wall located below the pressure reducing plate 6C.

The interior of the main body 2, which accommodates substantially the lower half of the foam head 4 and the straightening ring 5, is shaped as an air suction chamber 2C with a large inner diameter. The rectifying ring 5 is assembled in such a manner that a gap is formed between the rectifying ring 5 and the inner wall of the air suction chamber 2C. Further, a conical discharge passage 5a is formed inside the rectifying ring 5 and widens from the lower end of the foam head 4.

As shown in FIG. 2, the water sprinkling plate 3 has six water sprinkling holes 3b with a circular cross section in the center, and four slit-shaped air suction holes 3C on the outside thereof. Air intake hole 3C is
As shown in FIG. 1, an air flow path is connected to the gap between the rectifier 15 and the inner wall of the main body 2, and to the air hole 6e of the foam head 4. Furthermore, a hemispherical rectifying guide 3d is provided in a central region surrounded by the water sprinkling holes 3b, as shown in FIG. This rectifying guide 3d has a hemispherical shape with a diameter equal to the inscribed circle for the six water sprinkling holes 3b centered on the axis of the water sprinkling plate 3, and is raised upward so as to enter into the rectifying ring 5. ing. Note that the number of the air suction holes 3C and the water sprinkling holes 3b is arbitrary; for example, the number of the air suction holes 3C
It is also possible to increase the number by doubling C or by decreasing the diameter of the water spray holes 3b.

In the above structure, water is supplied from the inlet 2a through the flow path 2b.
The foam flows into the foam head 4, is accelerated by the small holes 6b of the pressure reducing plate 6C, and flows away. The internal pressure of the foam head 4 decreases due to the increased speed of water supply, which causes air to be sucked from the air suction hole 3C and the air suction chamber 2C.
Air enters the inside of the foam head 4 from e. For this reason, air is mixed into the accelerated water supply to form foam, and the downstream rectification network 6d further promotes foam formation.

Foamy water discharged from the foam head 4 flows into the discharge channel 5a of the rectifying ring 5, and is discharged from the water sprinkling hole 3b as shower water. At this time, the discharge passage 5a of the rectifying ring 5 has a conical cross-section that widens toward the end, and the rectifying guide 3d of the water sprinkling plate 3 has its spherical surface directed toward the upstream side of the flow. Therefore, the foamy water from the foamy head 4 flows through the rectifying guide 3d.
After colliding with the spherical surface, it is smoothly guided toward the water sprinkling hole 3b side without peeling or the like. And rectification I
The discharge flow path 5a of the I5 also has a conical cross section with a flow path area that gradually increases from the lower end of the foam head 4, so even when the flow path is reduced by the flow straightening guide 3b, the flow path area around it is smaller than that of the water spray plate. It does not suddenly become thicker or smaller until it reaches 3. In other words, since the rectifying guide 3b has a hemispherical shape, the flow area becomes narrower as it goes downward, whereas the discharge flow path 5a expands downward, so the flow path around the rectifying guide 3b becomes narrower. Sudden changes in the cross section are suppressed.

In this way, since the rectifying guide 3d has a spherical shape relative to the flow, it is possible to send out the water to the water spray hole 3b without disturbing the flow or causing stagnation. In addition, since rapid increases and decreases in the flow path area are suppressed, there is no flow loss due to compression or expansion of foam, and the amount of water discharged can be ensured.

FIG. 3 is a cross-sectional view of the main parts of an example of a hand shower type faucet using the foam shower spout of the present invention, and FIG. 4 is a perspective view showing how it is installed in a kitchen. Note that the same members as shown in FIGS. 1 and 2 are indicated by common reference numerals, and detailed explanation thereof will be omitted.

The water discharging head 1 is integrated into the shower body 10 for use as a hand shower, and has a flow path 1 formed therein.
It communicates with 0a. The shower main body 10 is supported by a holder 13 fixed to the counter 12 of the cabinet 1l so that it can be taken in and out, and a hose (not shown) is connected to the base end thereof to supply water or hot water from a hot water mixer tap, an electric water heater, etc. conduct. The holder 13 allows the shower main body 1O including the hose to be pulled out, and can be held in the hand to wash containers and the like. Note that such a hand shower that is equipped with a hose and can be freely pulled out has been commonly used.

On the other hand, the counter 12 is formed with a shallow sink 14 and a deep sink 15 side by side, and the water spouting head 1 equipped with the foam shower spout of the present invention is installed on the side of the shallow sink 14. Further, on the side of the deep sink 15, a normal single-lever type hot water mixing faucet 15a is provided.

As described above, the foamy water spouted from the shower body 10 provided with the water spouting head 1 becomes a stable shower water sprinkling without any disturbance in its flow after being turned into foam, as described above. For this reason,
Even if the sink 14 is shallow, foamy water is separated into a plurality of streamlines and showered, so the degree of water scattering is reduced and the problem of water splashing can be eliminated. In particular, as shown in the figure, even when the cutting board 14a is slid using the stepped portion 14b provided in the shallow hole 14 and water is spouted onto the second part of the cutting board 14a, the water splash does not become large, so that it does not wet the floor. Not at all.

In this way, if you sprinkle water in the shower without disturbing the flow after the foam has formed, not only will there be less water splashing when it hits the bottom of the container, but there will also be less water splashing when washing containers, etc. , further improving usability.

〔Effect of the invention〕

As explained above, in the present invention, the shower water is sprayed by dividing into a plurality of streamlines without disturbing the flow of foamy water toward the water sprinkling plate after foaming. For this reason,
In addition to suppressing water splash due to foaming, shower water also disperses and reduces water discharge pressure, making it possible to further reduce water splash.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of the essential parts of a foam shower spout showing an embodiment of the present invention, FIG. 2 is a bottom view, and FIG. 3 is a cross-sectional view showing an example of the foam shower spout being incorporated into a hand shower type shower body.
Figure 4 is a perspective view showing the installation of Kinchin on the counter;
FIG. 5 is a schematic diagram of a conventional example. 1: Water discharge head 2: Main body 2a: Inlet 2b: Channel 2C; Air suction chamber 3; Sprinkle plate 3a: Screw 3b = Water sprinkling hole 3C: Air suction hole 3d: Rectification guide 4: Foam nozzle 4a: Fixing metal fittings 4b
: Holding fitting 5; Rectifier ring 5a: Discharge channel 6a: Net 6b = Small hole 6C: Pressure reducing plate 6d; Rectifier net 6e: Air hole lO: Shower body 10a: Channel 11: Cabinet 12: Counter 1 1 l3: Holder 14, l5: Sink 14a: Cutting board 14b Step part 15a: Hot water mixer faucet

Claims (1)

[Claims] 1. A water discharge head connected to a water supply source is provided with a foam head for foaming the supplied water and a water spray plate for shower water disposed downstream of the foam head, and a discharge flow path from the foam head to the water spray plate. The foam shower spout is characterized in that the flow channel has a conical shape with a gradually increasing cross section, and a flow straightening guide that protrudes from the water sprinkling plate toward the foam head is provided coaxially with the discharge flow channel.