JP2022064410A - Spout member and spout apparatus with spout member - Google Patents

Abstract

To provide a spout apparatus of a novel structure, capable of favorably spouting water from each of spout holes with different specifications.SOLUTION: A spout member comprises: first spout holes h1; second spout holes h2; a spout hole arrangement part 24 in which the first spout holes h1 and the second spout holes h2 are provided; a storage space 32 provided on the upstream side of the spout hole arrangement part 24; a main water supply channel 22 including the storage space 32 and supplying water toward the storage space 32; a pressure regulation member 42 forming a partition wall between the spout hole arrangement part 24 and the storage space 32; a first sub supply channel f1 for supplying water from the storage space 32 toward the first spout holes h1; and a second sub supply channel f2 for supplying water from the storage space 32 toward the second spout holes h2. At least a part of the first sub supply channel f1 and at least a part of the second sub supply channel f2 are formed of a pressure regulation member 42. The pressure regulation member 42 individually sets up a pressure loss of the first sub supply channel f1 and a pressure loss of the second sub supply channel f2, respectively.SELECTED DRAWING: Figure 11

Description

The present disclosure relates to a water discharge member and a water discharge device including a water discharge member.

Various water discharge members such as faucets, shower heads, and watering nozzles are known. In the water discharge member, water is discharged in a water shape suitable for the intended use.

Japanese Unexamined Patent Publication No. 2007-326082 discloses a shower head that discharges a first mist flow and a second mist flow. In this shower head, in order to prevent the first mist flow from diffusing, the second mist flow is discharged to the outside of the first mist flow.

Japanese Unexamined Patent Publication No. 2007-326082

It is preferable that the degree of freedom of water discharge is high in order to cope with various uses. If a plurality of types of spouting holes can be provided and the specifications of spouting can be changed by the spouting holes, the degree of freedom of spouting can be increased. Examples of this specification include water shape, water discharge amount, water discharge pressure, and the like. The present inventor has found a new structure suitable for a water discharge member having a water discharge hole having different specifications.

An example of an object of the present disclosure is to provide a new structure capable of achieving good water discharge from each of the water discharge holes having different specifications.

In one embodiment, the water discharge member is provided with a first water discharge hole having a space inside the first hole, a second water discharge hole having a space inside the second hole, the first water discharge hole, and the second water discharge hole. A spout hole arrangement portion, a storage space provided on the upstream side of the spout hole arrangement portion, a main water supply channel including the storage space and supplying water to the storage space, the spout hole arrangement portion and the storage. A pressure adjusting member that forms a partition wall between the storage space, a first auxiliary water supply channel that supplies water from the storage space toward the first water discharge hole, and water supply from the storage space toward the second water discharge hole. It has a second sub-water supply channel to perform. At least a part of the first sub water supply channel and at least a part of the second sub water supply channel are formed by the pressure adjusting member. The pressure adjusting member individually sets the pressure loss of the first sub water supply channel and the pressure loss of the second sub water supply channel.

In another aspect, the water discharge member is provided with a first water discharge hole having a space inside the first hole, a second water discharge hole having a space inside the second hole, the first water discharge hole, and the second water discharge hole. A spout hole arrangement portion, a storage space provided on the upstream side of the spout hole arrangement portion, a main water supply channel including the storage space and supplying water to the storage space, the spout hole arrangement portion and the storage. A pressure adjusting member that forms a partition wall between the storage space, a first auxiliary water supply channel that supplies water from the storage space toward the first water discharge hole, and water supply from the storage space toward the second water discharge hole. It has a second sub-water supply channel to perform. At least a part of the first sub water supply channel and at least a part of the second sub water supply channel are formed by the pressure adjusting member. The pressure adjusting member regulates the first sub-water supply channel and the second sub-water supply channel so as to reduce the difference between the pressure loss of the first water discharge hole and the pressure loss of the second water discharge hole. ..

On one side, new structures can be provided that can achieve good spouting from each of the spouting holes with different specifications.

FIG. 1 is a perspective view of a water discharge device according to an embodiment. 2 (a) is a perspective view of the water discharge head in the water discharge device of FIG. 1, FIG. 2 (b) is a side view of the water discharge head, and FIG. 2 (c) is a bottom view of the water discharge head. FIG. 2D is a front view of the water discharge head. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 (d). 4 (a) is a perspective view of the water discharge head as viewed from the front side, and FIG. 4 (b) is a cross-sectional view taken along the line BB of FIG. 4 (a). FIG. 5 is an exploded perspective view of the water discharge head. FIG. 6 is an enlarged view of the region X of FIG. FIG. 7 is a cross-sectional view of region Y in FIG. 8 (a) is a perspective view of the pressure adjusting member as viewed from above, FIG. 8 (b) is a plan view of the pressure adjusting member, and FIG. 8 (c) is a side view of the pressure adjusting member. 8 (d) is a perspective view of the pressure adjusting member as viewed from below, and FIG. 8 (e) is a bottom view of the pressure adjusting member. 9 (a) is a perspective view of the screen member as viewed from above, FIG. 9 (b) is a plan view of the screen member, and FIG. 9 (c) is a side view of the screen member, FIG. 9 (d). ) Is a perspective view of the screen member as viewed from below, and FIG. 9 (e) is a bottom view of the screen member. FIG. 10 is a diagram in which a line on the upper surface of the screen member and a line on the lower surface of the pressure adjusting member are overlapped. FIG. 11 is a cross-sectional perspective view of the same water discharge head as in FIG. FIG. 12 is a cross-sectional view of the same region as in FIG. In FIG. 7, the pressure adjusting member is not floating, but in FIG. 12, the pressure adjusting member is floating.

Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate.

In the present application, "upper side" and "lower side" mean "upper side" and "lower side" in the water discharge head in the standard state. These words are judged according to the posture when the water discharge head is used.

The standard state is the state (posture) of the water discharge head 8 when it is normally used. For example, when the water discharge head 8 is a shower head for a bathroom, a state in which the shower head is hung on a shower hook and the water discharge direction faces downward can be regarded as a standard state. The water discharge head 8 of FIG. 1 is in a standard state. Unless otherwise specified, the description of the present application, which may depend on the posture of the water discharge head 8, may be the description in the standard state.

FIG. 1 is a perspective view of the water discharge device 2 according to the embodiment. The water discharge device 2 is attached to a washbasin (not shown). Examples of the installation location of the water discharge device 2 include a washbasin, a sink, and a bathroom. The installation location of the water discharge device of the present disclosure is not limited.

The water discharge device 2 has a main body 4, a lever handle 6, and a water discharge head 8. The water discharge device 2 is a so-called single lever type faucet. The temperature of the spouting water can be adjusted by rotating the lever handle 6 left and right. The amount of water discharged can be adjusted by rotating the lever handle 6 up and down. The lever handle 6 is an example of an operation unit capable of adjusting the amount of water discharged. Inside the main body 4, a valve mechanism capable of adjusting the temperature of the discharged water and the amount of the discharged water is built. This valve mechanism is known. In this way, in the water discharge device 2, the amount of water discharge can be adjusted. This valve mechanism is an example of a water discharge amount adjusting mechanism.

As the water discharge member of the present disclosure, in addition to the water discharge head of the water discharge device (faucet) for the washbasin such as the water discharge head 8, the water discharge head of the water discharge device (faucet) for the sink and the water discharge device (faucet) for the bathroom. Shower heads, watering nozzles for gardening or cleaning, and the like.

Further, the water discharge device 2 has a hot water introduction pipe 10, a water introduction pipe 12, and a water discharge pipe 14. The hot water introduction pipe 10 is connected to, for example, a pipe extending from the water heater, and supplies hot water to the hot water valve hole of the valve mechanism. The water introduction pipe 12 is connected to, for example, a water supply pipe without passing through a water heater, and supplies water to the water valve hole of the valve mechanism. The water discharge pipe 14 is connected to the discharge hole of the valve mechanism, and supplies the hot water mixed liquid to the main water supply channel 22 (described later) of the water discharge head 8. The water discharge pipe 14 is pulled out to the outside when the water discharge head 8 is removed from the main body 4 for use.

Heated hot water is introduced into the hot water introduction pipe 10. Heating is done by a water heater. Unheated water is introduced into the water introduction pipe 12. The hot water introduction pipe 10 supplies hot water to the valve mechanism. The water introduction pipe 12 supplies water to the valve mechanism. The valve mechanism adjusts the mixing ratio of hot water and water. This mixing ratio achieves temperature control of the spout. In the present application, heated hot water, unheated water, and a mixed liquid thereof are also simply referred to as "water".

The water discharge head 8 does not have a water shape switching mechanism for switching the water shape by operation. The water discharge head 8 may have a water shape switching mechanism. The water discharge head 8 does not have a water purification function unit for purifying water. The water discharge head 8 may have a water purification function unit for purifying raw water. The water discharge head 8 does not have a water discharge switching mechanism for switching whether the water discharge is raw water or purified water. The water discharge head 8 may have a water discharge switching mechanism for switching whether the water discharge is raw water or purified water.

2 (a) is a perspective view of the water discharge head 8, FIG. 2 (b) is a side view of the water discharge head 8, FIG. 2 (c) is a bottom view of the water discharge head 8, and FIG. 2 (d) is shown. Is a front view of the water discharge head 8. FIG. 2D is a front view of the water discharge head 8 with the center line of the cylindrical surface of the outer cover 34 horizontal. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 (d). FIG. 4A is a perspective view of the water discharge head as viewed from the front side, and is a view in which the viewing angle is slightly different from that of FIG. 2D. FIG. 4A is a front view of the water discharge head 8 with the water discharge screen horizontal. FIG. 4B is a cross-sectional view taken along the line BB of FIG. 4A. In FIG. 4B, the flow of water is schematically shown by an arrow.

The water discharge head 8 has a connection portion 18 connected to the main body portion 4. A seal member 20 is arranged at the connection portion 18. The water discharge head 8 is watertightly connected to the main body 4.

As shown in FIGS. 3 and 4B, the water discharge head 8 has a main water supply channel 22. The main water supply channel 22 is connected to the discharge hole of the valve mechanism described above.

As is well shown in FIG. 2 (c), the water discharge head 8 has a first water discharge hole h1 and a second water discharge hole h2. The first water discharge hole h1 and the second water discharge hole h2 are arranged in the water discharge hole arrangement portion 24. In the present embodiment, the water discharge hole arrangement portion 24 is a water discharge screen. A plurality of first water discharge holes h1 and a plurality of second water discharge holes h2 are provided. The first water discharge hole h1 may be one. The second water discharge hole h2 may be one. The water shape of the water discharged from the first water discharge hole h1 is not limited. The water shape of the water discharged from the second water discharge hole h2 is not limited.

In a plan view of the water discharge hole arrangement portion 24, the plurality of first water discharge holes h1 are arranged along a first virtual circle (not shown). The first water discharge holes h1 are arranged at equal intervals on the circumference of the first virtual circle.

In a plan view of the water discharge hole arrangement portion 24, a plurality of second water discharge holes h2 are arranged along a second virtual circle (not shown). The second water discharge holes h2 are arranged at equal intervals on the circumference of the second virtual circle. Further, in this plan view, a plurality of second water discharge holes h2 are arranged along a third virtual circle (not shown). The second water discharge holes h2 are arranged at equal intervals on the circumference of the third virtual circle.

In the plan view of the water discharge hole arrangement portion 24, the first virtual circle, the second virtual circle, and the third virtual circle are concentric circles. The second virtual circle is located outside the first virtual circle. The third virtual circle is located outside the second virtual circle.

The water discharged from each of the first water discharge holes h1 becomes mist. Each of the first water discharge holes h1 is a mist hole forming a mist. Each first water discharge hole h1 discharges mist in the form of an empty cone (holocone) water. As described below, this mist contains ultrafine bubbles. In the present embodiment, a large number of ultrafine bubbles can be contained in the water discharged from the first water discharge hole h1.

The second water discharge hole h2 is a shower hole. Each second water discharge hole h2 discharges water in a substantially linear water shape. The water discharged from the plurality of second water discharge holes h2 forms a shower water shape.

As is well shown in FIG. 4B, the main water supply channel 22 has a fine bubble generation unit 27. The fine bubble generation unit 27 has a spiral flow forming unit 28 and a constricted portion 30.

The spiral flow forming portion 28 has a plurality of guide blades 28a. The guide blades 28a are arranged at equal intervals in the circumferential direction of the spiral flow forming portion 28. Each of the guide blades 28a is oriented so as to guide the water flow in one turning direction (clockwise direction in FIG. 4B). The water that has passed through the spiral flow forming portion 28 becomes a spiral flow (swirl guidance effect).

In the main water supply channel 22, the position of the inflow hole 28b of the spiral flow forming portion 28 is deviated from the center of the spiral flow forming portion 28. The spiral flow is also formed by this deviation (offset effect).

The constricted portion 30 is provided adjacent to the spiral flow forming portion 28 and on the downstream side of the spiral flow forming portion 28. The constricted portion 30 forms a flow path narrower than the upstream side and the downstream side thereof.

The main water supply channel 22 has a storage space 32. The storage space 32 is located on the upstream side of the water discharge hole arrangement portion 24. The main water supply channel 22 is terminated by the storage space 32. The storage space 32 is located between the fine bubble generation unit 27 and the pressure adjusting member 42. The main water supply channel 22 supplies water to the storage space 32. The storage space 32 is a portion of the main water supply channel 22 extending to the pressure adjusting member 42, which is adjacent to the pressure adjusting member 42.

FIG. 5 is an exploded perspective view of the water discharge head 8. With reference to FIGS. 5 and 3, the water discharge head 8 has an outer cover 34, a head base 36, a swivel guide member 38, a nozzle member 40, a pressure adjusting member 42, and a screen member 44. The outer cover 34 constitutes the outer surface of the water discharge head 8. The head substrate 36 is not shown in FIG. 5, but is shown in FIG. The head substrate 36 constitutes a portion of the main water supply channel 22 that reaches the spiral flow forming portion 28. The swivel guide member 38 has the guide blade 28a, and constitutes the spiral flow forming portion 28. The nozzle member 40 is fixed (screw-coupled) to the head substrate 36 and constitutes the main water supply channel 22. The nozzle member 40 has a portion in which the swivel guide member 38 is arranged, and constitutes the spiral flow forming portion 28 together with the swivel guide member 38. Further, the nozzle member 40 constitutes a constricted portion 30.

The screen member 44 has a water discharge screen 46. The water discharge screen 46 is a disk-shaped portion. In the present embodiment, the water discharge screen 46 is the water discharge hole arrangement portion 24. The first water discharge hole h1 and the second water discharge hole h2 penetrate the water discharge screen 46. The water discharge screen 46 is an example of the water discharge hole arrangement portion 24.

As shown in FIG. 5, the water discharge head 8 has a rotation restricting member 48. After the nozzle member 40 is screwed into the head substrate 36, the rotation restricting member 48 is mounted. The rotation blocking member 48 regulates the nozzle member 40 from rotating with respect to the head substrate 36. When the screen member 44 is removed, the screen member 44 is rotated with respect to the nozzle member 40, but the rotation blocking member 48 prevents the nozzle member 40 from rotating together with the screen member 44.

FIG. 6 is an enlarged view of the region X surrounded by the square line in FIG. In FIG. 6, the water flow (spiral flow SF1) in the spiral flow forming portion 28 and the constricted portion 30 is schematically shown by a broken line.

The swivel guide member 38 is fixed in a non-rotatable state. That is, the guide blade 28a is fixed and does not rotate. The non-moving guide blade 28a has a high guidance effect and effectively creates the spiral flow SF1. Further, the spiral flow forming portion 28 (swivel guide member 38) has a core portion 28c. The circumference of the core portion 28c is a space. The core 28c forms a conical flow path. The spiral flow SF1 is promoted by the water flowing around the core portion 28c. The high-speed spiral flow SF1 is generated by the turning guide effect and the offset effect. This spiral flow SF1 causes cavitation and causes fine bubbles. The fine bubble generation portion 27 is formed by the spiral flow forming portion 28 and the constricted portion 30.

In the present embodiment, fine bubbles are generated from the dissolved air in the water by a cavitation method without inhaling air from the outside. Of course, the method of generating fine bubbles is not limited. Many methods are known as methods for generating fine bubbles. Either method may be adopted.

FIG. 7 is an enlarged view of the region Y surrounded by the square line in FIG. FIG. 7 schematically shows the flow of water (spiral flow SF2) in the first water discharge hole h1 by the alternate long and short dash line. The first water discharge hole h1 has a fine bubble miniaturization unit 49. The fine bubble miniaturization portion 49 has a spiral flow forming portion 50 and a constricted portion 52. The fine bubble miniaturization unit 49 generates fine bubbles. Further, as described later, the spiral flow forming portion 50 is configured to form the spiral flow SF2. The spiral flow SF2 further miniaturizes the fine bubbles generated by the spiral flow SF1. Further, the mist water type Mt discharged from the first water discharge hole h1 via the spiral flow SF2 is accompanied by suction of air Ar. As described above, the water mist Mt forms an empty cone, and air Ar is sucked from the center of the empty cone. This inhalation increases the number of fine bubbles.

In the present embodiment, the fine bubble generation unit 27 and the fine bubble miniaturization unit 49 are used in combination. By this combined use, water containing fine bubbles can be discharged from both the first water discharge hole h1 and the second water discharge hole h2, and the fine bubbles contained in the water discharged from the first water discharge hole h1 can be discharged into the second water discharge hole. It can be made finer than the fine bubbles contained in the water discharged from the hole h2. On the other hand, only one of the fine bubble generation unit 27 and the fine bubble miniaturization unit 49 may be provided. The fine bubble generation unit 27 and the fine bubble miniaturization unit 49 can generate fine bubbles, respectively.

The fine bubbles generated by the spiral flow SF1 (primary spiral flow) include microbubbles and ultrafine bubbles. By the spiral flow SF2 (secondary spiral flow), the fine bubbles generated in the spiral flow SF1 are miniaturized, and the ratio of ultrafine bubbles in the fine bubbles increases. Further, the inhalation of air Ar increases the number of fine bubbles. By using the spiral flow SF1 and the spiral flow SF2 together, the number of ultrafine bubbles per 1 ml of water can be increased.

As is known, the fine bubble is a bubble having a particle size of less than 100 μm, and is a concept including microbubbles and ultrafine bubbles. Microbubbles are bubbles having a particle size of 1 μm or more and less than 100 μm. Ultrafine bubbles are bubbles having a particle size of less than 1 μm.

8 (a) is a perspective view of the pressure adjusting member 42 as viewed from above, FIG. 8 (b) is a plan view of the pressure adjusting member 42, and FIG. 8 (c) is a side view of the pressure adjusting member 42. 8 (d) is a perspective view of the pressure adjusting member 42 as viewed from below, and FIG. 8 (e) is a bottom view of the pressure adjusting member 42.

The pressure adjusting member 42 has a bottom surface portion 60, a side surface portion 62, a rectifying projection 64, a first water supply hole s1, a second water supply hole s2, a slide engaging portion 66, and an insertion projection 68. The side surface portion 62 is a cylindrical portion. The side surface portion 62 extends upward from the peripheral edge of the bottom surface portion 60. The side surface portion 62 has an upper end surface 62a. The rectifying projection 64 projects upward from the upper surface of the bottom surface portion 60. A plurality of rectifying protrusions 64 are provided. The rectifying projection 64 swirls at high speed and rectifies the water supplied to the storage space 32. The rectifying projection 64 can contribute to the miniaturization of fine bubbles.

The first water supply hole s1 is a through hole that penetrates the pressure adjusting member 42 (bottom surface portion 60). A plurality of first water supply holes s1 are provided. The first water supply holes s1 are provided at a plurality of positions in the circumferential direction of the pressure adjusting member 42. The first water supply holes s1 are evenly distributed in the circumferential direction of the pressure adjusting member 42. The second water supply hole s2 is a through hole that penetrates the pressure adjusting member 42. The second water supply hole s2 is located near the boundary between the bottom surface portion 60 and the side surface portion 62. A plurality of second water supply holes s2 are provided. In the radial direction of the pressure adjusting member 42, the second water supply hole s2 is arranged outside the first water supply hole s1. The second water supply holes s2 are provided at a plurality of positions in the circumferential direction of the pressure adjusting member 42. The second water supply holes s2 are evenly distributed in the circumferential direction of the pressure adjusting member 42. The slide engaging portion 66 is open on the lower surface of the bottom surface portion 60. The slide engaging portion 66 is a recess that is opened downward. The slide engaging portion 66 is provided at the center of the bottom surface portion 60. The insertion protrusion 68 projects downward from the lower surface of the bottom surface portion 60. A plurality of insertion protrusions 68 are provided. The shape of the insertion protrusion 68 is a substantially conical shape (a cone having a rounded tip).

9 (a) is a perspective view of the screen member 44 as viewed from above, FIG. 9 (b) is a plan view of the screen member 44, and FIG. 9 (c) is a side view of the screen member 44. 9 (d) is a perspective view of the screen member 44 as viewed from below, and FIG. 9 (e) is a bottom view of the screen member 44.

The screen member 44 has a bottom surface portion 70, a side surface portion 72, a slide engaging portion 74, a first water discharge hole h1 and a second water discharge hole h2. The side surface portion 72 is a cylindrical portion. The side surface portion 72 extends upward from the peripheral edge of the bottom surface portion 70. The bottom surface portion 70 is a water discharge screen. The water discharge screen 70 is the water discharge hole arrangement portion 24 described above. The first water discharge hole h1 is a through hole that penetrates the water discharge screen 70 (water discharge hole arrangement portion 24). A plurality of first water discharge holes h1 are provided. The first water discharge holes h1 are provided at a plurality of positions in the circumferential direction of the screen member 44. The first water discharge holes h1 are evenly distributed in the circumferential direction of the screen member 44. The second water discharge hole h2 is a through hole that penetrates the screen member 44. The second water discharge hole h2 is located outside the first water discharge hole h1 in the radial direction of the water discharge screen 70 (water discharge hole arrangement portion 24). A plurality of second water discharge holes h2 are provided. The second water discharge holes h2 are provided at a plurality of positions in the circumferential direction of the water discharge screen 70. The second water discharge holes h2 are evenly distributed in the circumferential direction of the water discharge screen 70 (water discharge hole arrangement portion 24). The slide engaging portion 74 is a convex portion that protrudes upward from the upper surface of the water discharge screen 70. The slide engaging portion 74 is provided in the center of the water discharge screen 70.

The pressure adjusting member 42 is arranged in a movable state. The pressure adjusting member 42 is placed on the upper side of the screen member 44. The pressure adjusting member 42 forms a partition wall between the water discharge hole arrangement portion 24 and the storage space 32. As shown in FIG. 7, the slide engaging portion 74 (convex portion) of the screen member 44 is inserted into the slide engaging portion 66 (concave portion) of the pressure adjusting member 42. The engagement of the slide engaging portion 66 and the slide engaging portion 74 restricts the pressure adjusting member 42 from moving in the radial direction with respect to the screen member 44. Further, the rotation of the pressure adjusting member 42 with respect to the screen member 44 is restricted. On the other hand, the pressure adjusting member 42 is allowed to move in the axial direction (vertical direction) with respect to the screen member 44. The radial direction and the axial direction here mean the radial direction and the axial direction of the pressure adjusting member 42.

When no external force other than gravity acts on the pressure adjusting member 42, the pressure adjusting member 42 is lowered to a position supported by the screen member 44 due to gravity or the like. FIG. 7 shows a state in which the screen member 44 is lowered. On the other hand, when an upward external force is applied to the pressure adjusting member 42, the pressure adjusting member 42 can move upward. In other words, when an external force of a predetermined value or more is applied, the pressure adjusting member 42 can move in a direction away from the screen member 44. This movement is also referred to as "floating" of the pressure adjusting member 42. The width of this float is regulated to a predetermined width.

As shown in FIG. 7, the first water discharge hole h1 has an inlet opening h11, an outlet opening h12, and an in-hole space h13. The hole space h13 is a hole space of the first water discharge hole h1. The hole inner space h13 is also referred to as a first hole inner space h13 in order to distinguish it from the hole inner space of the second water discharge hole h2. The inlet opening h11 is formed on the inner surface (upper surface) of the water discharge screen 70. The outlet opening h12 is formed on the outer surface (lower surface) of the water discharge screen 70. The first hole inner space h13 is formed between the inlet opening h11 and the outlet opening h12.

The second water discharge hole h2 has an inlet opening h21, an outlet opening h22, and an inner space h23. In order to distinguish it from the first hole space h13, the hole space h23 is also referred to as a second hole space h23. The inlet opening h21 is formed on the inner surface (upper surface) of the water discharge screen 70. The outlet opening h22 is formed on the outer surface (lower surface) of the water discharge screen 70. The second hole inner space h23 is formed between the inlet opening h21 and the outlet opening h22.

As shown in FIG. 7, the second water discharge hole h2 forms a conical concave surface. The cross-sectional area of the second water discharge hole h2 becomes smaller as it approaches the outlet opening h22. As shown in FIG. 9B, the entrance opening h21 is circular. As shown in FIG. 9 (e), the outlet opening h22 is circular.

As shown in FIG. 9 (e), the outlet opening h12 is circular. On the other hand, the entrance opening h11 is not circular. As shown in FIGS. 9 (b) and 9 (e), a plurality (12) first water discharge holes h1 are arranged at equal intervals in the circumferential direction of the water discharge screen 70. As shown in the enlarged view of FIG. 9B, the (single) inlet opening h11 has a central portion 80 and an outward extending portion 82. The central portion 80 is circular. A plurality of outward extending portions 82 are provided. The outward extending portion 82 extends from a plurality of locations (two locations) in the circumferential direction of the central portion 80 toward the outside of the central portion 80. The extending direction of the outer extending portion 82 is substantially along the tangential direction of the central portion 80.

As described above, the first water discharge hole h1 has a spiral flow forming portion 50 and a constricted portion 52 (see FIG. 7). The spiral flow forming portion 50 constitutes a portion on the inlet side of the first water discharge hole h1. As shown in FIG. 7, the spiral flow forming portion 50 has a swirling flow guiding portion 50a and a conical surface portion 50b. The conical surface portion 50b is adjacent to the swirling flow guide portion 50a. The conical surface portion 50b is located on the downstream side of the swirling flow guide portion 50a. The swirling flow guide portion 50a forms an inlet opening h11. The shape of the swirling flow guide portion 50a is reflected in the shape of the inlet opening h11. Similar to the inlet opening h11, the swirling flow guide portion 50a has a central portion 84 and an outward extending portion 86. The central portion 84 has a cylindrical shape. A plurality of outward extending portions 86 are provided.

The outward extending portion 86 extends from a plurality of locations (two locations) on the outer peripheral edge of the central portion 84 toward the outside of the central portion 84. The flow from the plurality of outward extending portions 86 into the central portion 84 forms a unidirectional swirling flow at the central portion 84. Each outward extending portion 86 extends so that water flowing from the plurality of outward extending portions 86 into the central portion 84 forms a single rotational spiral flow SF2 at the central portion 84. The spiral flow SF2 generated in the swirl flow guide portion 50a flows into the conical surface portion 50b. The cross-sectional area of the conical surface portion 50b is smaller than that of the central portion 84, and the flow velocity of the spiral flow SF2 increases at the conical surface portion 50b. Further, the cross-sectional area of the conical surface portion 50b becomes smaller as it approaches the outlet opening h12. Therefore, the flow velocity of the spiral flow SF2 increases as it approaches the outlet opening h12. This high-speed spiral flow SF2 is discharged as mist from the outlet opening h12 via the constricted portion 52. This high-speed spiral flow SF2 forms a cavity having a negative pressure in the center of the spiral. A water shape of an empty cone is formed by the spiral flow SF2 in which a cavity is formed in the central portion. Further, due to this negative pressure, air Ar is sucked from the center of the spiral flow SF2. As a result, the mist water form Mt is achieved, and the mist containing a large number of ultrafine bubbles is discharged.

FIG. 10 is a plan view of the screen member 44 on which the pressure adjusting member 42 is mounted, as viewed from above. This plan view is a view in which FIG. 9 (b) is overlaid with FIG. 8 (e) turned upside down (left-right inverted). That is, FIG. 10 is a diagram in which the line on the upper surface of the screen member 44 and the line on the lower surface of the pressure adjusting member 42 are overlapped. FIG. 10 shows the positional relationship between each part of the pressure adjusting member 42 and each part of the screen member 44. For ease of understanding, in FIG. 10, the pressure adjusting member 42 is shown by a thicker line than the screen member 44.

The position of the first water supply hole s1 of the pressure adjusting member 42 corresponds to the position of the end portion of the outward extending portion 86 in the swirling flow guide portion 50a of the first water discharge hole h1. The first water supply hole s1 is located above the end of the outward extending portion 86. One first water supply hole s1 has a plurality of (two) outward extending portions 86, and one first water supply is provided to each of the plurality (two) outward extending portions 86. The hole s1 is arranged. Water flows from each of the first water supply holes to each of the ends of the outward extending portion 86. This water flows along each of the outer extending portions 86 and flows into the central portion 84. Therefore, a spiral flow is effectively formed in the central portion 84.

As shown in FIG. 10, the position of the insertion protrusion 68 of the pressure adjusting member 42 corresponds to the position of the central portion 84 of the first water discharge hole h1. Each of the insertion protrusions 68 has entered each of the first water discharge holes h1. When the insertion protrusion 68 enters the first hole inner space h13, a conical flow path is formed in the first hole inner space h13 (see FIG. 7). This conical flow path promotes the formation of the spiral flow SF2.

By engaging the slide engaging portion 66 and the slide engaging portion 74, the phase relationship between the pressure adjusting member 42 and the screen member 44 is fixed in one way.

The pressure adjusting member 42 is a partition wall member located between the water discharge hole arrangement portion 24 (water discharge screen 70) and the storage space 32. The partition with this partition does not have to be perfect. Even if this section is not perfect, the pressure adjusting function (described later) by the pressure adjusting member 42 can be exerted. Also in this embodiment, the pressure adjusting member 42 does not completely partition the water discharge hole arrangement portion 24 and the storage space 32, and there is a slight gap. Further, the pressure adjusting member 42 does not cover the portion (outer peripheral portion) in which the second water discharge hole h2 is arranged in the water discharge hole arrangement portion 24.

FIG. 11 is a cross-sectional perspective view of the water discharge head 8. In FIG. 11, the positions of the cross sections with respect to the pressure adjusting member 42 and the screen member 44 are different from those in FIG. The cross section in FIG. 11 passes through the second water supply hole s2.

The water discharge head 8 has a first auxiliary water supply channel f1 that supplies water from the storage space 32 toward the first water discharge hole h1. In the enlarged part of FIG. 11, the line passing through the first auxiliary water supply channel f1 is shown by a alternate long and short dash line. The first sub water supply channel f1 reaches the first water discharge hole h1 from the storage space 32 through the first water supply hole s1. Although not shown by the alternate long and short dash line in FIG. 11, as described above, the spiral flow SF2 is formed in the first water discharge hole h1.

The water discharge head 8 has a second auxiliary water supply channel f2 that supplies water from the storage space 32 toward the second water discharge hole h2. In the enlarged part of FIG. 11, the line passing through the second auxiliary water supply channel f2 is shown by a two-dot chain line. The second sub water supply channel f2 reaches the second water discharge hole h2 from the storage space 32 through the second water supply hole s2.

As described above, the first water supply hole s1 which is a part of the first sub water supply channel f1 is formed by the pressure adjusting member 42. Further, the second water supply hole s2, which is a part of the second auxiliary water supply passage f2, is formed by the pressure adjusting member 42. In the present embodiment, the first water supply hole s1 which is a through hole formed in the pressure adjusting member 42 constitutes a part of the first sub water supply passage f1. Further, the second water supply hole s2, which is a through hole formed in the pressure adjusting member 42, constitutes a part of the second auxiliary water supply passage f2. In this configuration, the pressure loss of the first sub water supply channel f1 and the second sub water supply channel f2 can be easily and surely set by the diameter (cross-sectional area), the number (total cross-sectional area), bending, etc. of the through holes. can. However, a configuration other than the through hole may be adopted. For example, the first sub water supply channel f1 and / or the second sub water supply channel f2 may be formed by the gap between the pressure adjusting member 42 and the adjacent portion.

The pressure adjusting member 42 sets the pressure loss of the first auxiliary water supply passage f1 by the first water supply hole s1. The pressure loss of the first auxiliary water supply channel f1 can be set by the diameter (cross-sectional area), length, number (total cross-sectional area), bending, and the like of the first water supply hole s1. The pressure adjusting member 42 sets the pressure loss of the second auxiliary water supply passage f2 by the second water supply hole s2. The pressure loss of the second auxiliary water supply passage f2 can be set by the diameter (cross-sectional area), length, number (total cross-sectional area), bending, and the like of the second water supply hole s2. In the pressure adjusting member 42, the first water supply hole s1 and the second water supply hole s2 are separately provided. Therefore, in the pressure adjusting member 42, the pressure loss of the first sub water supply channel f1 and the pressure loss of the second sub water supply channel f2 are individually set. Therefore, the pressure adjusting member 42 can adjust each of the water pressure P1 in the first hole inner space h13 and the water pressure P2 in the second hole inner space h23.

The member 42 sets the flow rate of the first sub water supply passage f1 by the first water supply hole s1. The flow rate of the first sub water supply channel f1 can be set by the diameter (cross-sectional area), length, number (total cross-sectional area), bending, and the like of the first water supply hole s1. The member 42 sets the flow rate of the second auxiliary water supply passage f2 by the second water supply hole s2. The flow rate of the second auxiliary water supply channel f2 can be set by the diameter (cross-sectional area), length, number (total cross-sectional area), bending, and the like of the second water supply hole s2. In the member 42, the first water supply hole s1 and the second water supply hole s2 are separately provided. Therefore, in the member 42, the flow rate of the first sub water supply channel f1 and the flow rate of the second sub water supply channel f2 are individually set. Therefore, the amount of water discharged from the first water discharge hole h1 and the amount of water discharged from the second water discharge hole h2 can be adjusted respectively. With the member 42, the ratio of the amount of water discharged from the first water discharge hole h1 to the amount of water discharged from the second water discharge hole h2 can be changed as compared with the case where the member 42 does not exist. The member 42 is also a flow rate adjusting member.

When the water pressures in the first hole inner space h13 are different, the water pressure P1 in the first hole inner space h13 can be the water pressure in the inlet opening h11. Further, when the water pressures in the second hole inner space h23 are different, the water pressure P2 in the second hole inner space h23 can be regarded as the water pressure in the inlet opening h21.

The first water discharge hole h1 is different from the second water discharge hole h2. That is, the specifications of the holes differ between the first water discharge hole h1 and the second water discharge hole h2. The specifications of the hole are, for example, the hole diameter, the length of the hole, the vertical cross-sectional shape of the hole, the cross-sectional shape of the hole, and the like. In this way, holes having different specifications can be arranged in the same water discharge hole arrangement portion. Water spouts of different morphologies are discharged from holes with different specifications. The form of water discharge is, for example, a water shape, a water pressure, a flow rate, or the like. The coexistence of spouts of different forms increases the degree of freedom in designing spouts.

When holes with different specifications coexist, there is a suitable water pressure for each of these holes. If the water pressure is insufficient or the water pressure is too high in a hole of a certain specification, proper water discharge from the hole cannot be obtained. It is preferable that water is supplied at an appropriate water pressure for each hole having different specifications.

However, when water is supplied to these holes from the same flow path, water flows into the hole having the smaller pressure loss, and it is difficult to make the water pressure appropriate for each hole. As a result, a hole may be formed in which the desired water shape cannot be obtained.

By providing the pressure adjusting member 42, it is possible to adjust each of the water pressure P1 in the space inside the first hole and the water pressure P2 in the space inside the second hole. Therefore, the water pressure can be adjusted for each hole. For example, when the pressure loss of the first water discharge hole h1 and the pressure loss of the second water discharge hole h2 are different, the pressure adjusting member 42 is the first secondary so as to reduce (reduce) the difference between these pressure losses. The water supply channel f1 and the second secondary water supply channel f2 can be regulated. This regulation is achieved, for example, by designing the first water supply hole s1 and the second water supply hole s2. The pressure adjusting member 42 regulates the first sub water supply channel f1 and the second sub water supply channel f2 so as to reduce the difference between the pressure loss of the first water discharge hole h1 and the pressure loss of the second water discharge hole h2.

In the above embodiment, the pressure loss of the first water discharge hole h1 is larger than the pressure loss of the second water discharge hole h2. Therefore, water flows to the second water discharge hole h2 side, and the water pressure P1 of the first water discharge hole h1 tends to be insufficient. If the water pressure P1 is insufficient, an appropriate mist water form Mt cannot be obtained. Therefore, the water shape is disturbed, specifically, the spouting water does not have a conical shape, and mist is not properly generated. In addition, the flow velocity of the spiral flow SF2 may decrease, and the density of the ultrafiber bull may decrease. By providing the pressure adjusting member 42 and regulating the flow of the second auxiliary water supply channel f2, the water pressure P1 can be made appropriate, and an appropriate mist water form Mt can be obtained. The flow of the second auxiliary water supply channel f2 is appropriately regulated by the second water supply hole s2 having a small cross-sectional area.

The magnitude relationship between the pressure loss of the first water discharge hole h1 and the pressure loss of the second water discharge hole h2 can be determined by applying a single water pressure to the water discharge hole arrangement portion 24 from the upstream side. In the above embodiment, this determination can be made by discharging water with the pressure adjusting member 42 removed. By comparing the flow rate of the water discharged from the first water discharge hole h1 and the flow rate of the water discharged from the second water discharge hole h2, the magnitude relationship can be determined. The hole with the larger flow rate of water discharge has a smaller pressure loss. When there are a plurality of first water discharge holes h1 and second water discharge holes h2 as in the above embodiment, the flow rate of water discharged from all the first water discharge holes h1 and the flow rate of water discharged from all the second water discharge holes h2. Is compared with.

Further, the pressure loss of the first water discharge hole h1 can be adjusted by the diameter of the hole (cross-sectional area of the hole), the length of the hole, the number of holes (total cross-sectional area of the hole), bending of the hole, and the like. The same applies to the pressure loss of the second water discharge hole h2.

When the pressure loss of the second water discharge hole is smaller than the pressure loss of the first water discharge hole, the pressure loss of the second secondary water supply channel can be made larger than the pressure loss of the first secondary water supply channel. As a result, the amount of water flowing through the first water discharge hole having a large pressure loss can be increased, and the balance between the water pressure P1 and the water pressure P2 can be made appropriate. As a result, the water pressure P1 of the first water discharge hole becomes appropriate, and the intended water shape is obtained in the first water discharge hole and the second water discharge hole.

In the above embodiment, the pressure loss of the second sub water supply channel f2 is larger than the pressure loss of the first sub water supply channel f1. In other words, the pressure loss of the first sub water supply channel f1 is smaller than the pressure loss of the second sub water supply channel f2. Therefore, it is possible to increase the amount of water flowing through the first water discharge hole h1 having a large pressure loss, and it is possible to prevent a decrease in the water pressure P1. As a result, an appropriate spiral flow SF2 and mist water form Mt can be obtained.

The magnitude relationship between the pressure loss of the first water supply hole s1 and the pressure loss of the second water supply hole s2 can be determined by applying a single water pressure to the pressure adjusting member 42 from the upstream side. In the above embodiment, this determination can be made by passing water in a state where the water discharge hole arrangement portion 24 (water discharge screen 70) is removed. By comparing the flow rate of the water discharged from the first water supply hole s1 and the flow rate of the water discharged from the second water supply hole s2, the magnitude relationship can be determined. The water supply hole with the larger flow rate has a smaller pressure loss. When there are a plurality of first water supply holes s1 and second water supply holes s2 as in the above embodiment, the flow rate of water discharged from all the first water supply holes s1 and the flow rate of water discharged from all the second water supply holes s2. Is compared with.

The pressure adjusting member 42 is arranged in a movable state. As described above, the pressure adjusting member 42 can float. "Floating" means that the pressure adjusting member 42 moves in a direction away from the water discharge hole arranging portion 24. The pressure adjusting member 42 can move in the separation / contact direction with respect to the water discharge hole arrangement portion 24. In the present embodiment, the separation / contact direction is the vertical direction. As the slide engaging portion 66 slides with respect to the slide engaging portion 74, the pressure adjusting member 42 moves in the disengagement direction. FIG. 7 shows a state in which the pressure adjusting member 42 is not floating. There is a gap g1 between the upper end surface 62a of the pressure adjusting member 42 and the adjacent portion. The pressure adjusting member 42 can float to a position where the upper end surface 62a abuts on the adjacent member. That is, the pressure adjusting member 42 can float to a position where the gap g1 disappears.

FIG. 12 is a cross-sectional view showing a state in which the pressure adjusting member 42 is floating. FIG. 12 is an enlarged view of the same region as that of FIG. 7. However, the cross-sectional position of FIG. 12 is different from that of FIG. 7. FIG. 12 shows a state in which the pressure adjusting member 42 is raised to the maximum. That is, in FIG. 12, the pressure adjusting member 42 floats to a position where the gap g1 disappears. In FIG. 12, the gap g1 is zero. In FIG. 12, the pressure adjusting member 42 moves to the limit of the movable range. The movable range of the pressure adjusting member 42 is from the state of FIG. 7 to the state of FIG.

When the pressure adjusting member 42 is in a floating state, a gap g2 is formed between the water discharge hole arranging portion 24 (water discharge screen 70) and the pressure adjusting member 42. The bypass flow path b1 is formed by the gap g2. A portion where the water discharge hole arrangement portion 24 (water discharge screen 70) and the pressure adjustment member 42 are in contact with each other at a position between the first water discharge hole h1 and the second water discharge hole h2 when the pressure adjustment member 42 is not floating. There is. When the pressure adjusting member 42 floats, the abutting portion is separated. The bypass flow path b1 is a flow path that directly connects the first water discharge hole h1 and the second water discharge hole h2. The bypass flow path b1 is formed between the upper surface (inner surface) of the water discharge hole arrangement portion 24 (water discharge screen 70) and the lower surface of the pressure adjusting member 42. The bypass flow path b1 is a flow path that does not pass through the through hole of the pressure adjusting member 42. The larger the floating amount of the pressure adjusting member 42, the larger the width of the gap g2 (bypass flow path b1). In other words, as the pressure adjusting member 42 moves away from the water discharge hole arrangement portion 24 (water discharge screen 70), the gap g2 (bypass flow path b1) is expanded.

If there is a bypass flow path b1 in a situation where there is a difference between the water pressure P1 and the water pressure P2, water flows through the bypass flow path b1 from the higher water pressure side to the lower water pressure side. The bypass flow path b1 leaks the higher pressure of the water pressures P1 and P2 to the lower one. Due to the presence of the bypass flow path b1, the difference between the water pressure P1 and the water pressure P2 becomes small.

As described above, the pressure adjusting member 42 can increase the amount of water supplied to the first water discharge hole h1 having a larger pressure loss and secure the water pressure P1. However, if the water pressure (water supply pressure) applied from the main water supply channel 22 fluctuates, the situation may change. Even if the water pressure P1 is appropriately set at a certain water supply pressure by adjusting the first sub water supply channel f1 and the second sub water supply channel f2, the water pressure P1 may become excessive at a higher water supply pressure. This water supply pressure changes depending on the amount of water discharged from the water discharge device (faucet). In the present embodiment, when the lever handle 6 is operated to change the amount of water discharged, the water supply pressure changes. When the water pressure P1 deviates from a suitable range by changing the amount of water discharged, the water shape is disturbed by the amount of water discharged. Therefore, an appropriate water shape can be obtained only in a specific water pressure region. It is preferable that a stable and appropriate water shape can be obtained in response to a change in the amount of water discharged.

The pressure adjusting member 42 tends to float as the water pressure P1 increases. If the bypass flow path b1 is formed when the water pressure P1 becomes excessive, water flows from the first water discharge hole h1 to the second water discharge hole h2 using the bypass flow path b1 (FIG. 12). See the arrow in.). The bypass flow path b1 releases the excess pressure in the first water discharge hole h1 (first hole inner space h13) to the second water discharge hole h2 (second hole inner space h23) side. The bypass flow path b1 can adjust the water pressure P1 and the water pressure P2 in response to the change in the water supply pressure (water discharge amount). The movable pressure adjusting member 42 can adjust the water pressure P1 and the water pressure P2 in response to a change in the water supply pressure (water discharge amount).

Each of the first water discharge hole h1 and the second water discharge hole h2 has a suitable water pressure range in which an appropriate water discharge (water shape) can be obtained. That is, each of the water pressure P1 and the water pressure P2 has a suitable water pressure range. In the above embodiment, the mist hole which is the first water discharge hole h1 has a narrower suitable water pressure range than the shower hole which is the second water discharge hole h2. The first water discharge hole h1 (mist hole) has a narrower suitable water pressure range than the second water discharge hole h2 (shower hole). In the above embodiment, the pressure loss of the auxiliary water supply passages f1 and f2 is set by the pressure adjusting member 42 to increase the flow rate to the first water discharge hole h1, and when the water supply pressure becomes high, the bypass flow path b1 is used. Water flows from the first water discharge hole h1 to the second water discharge hole h2. Therefore, even if the water supply pressure (water discharge amount) changes, the water pressure P1 can be kept within a narrow suitable water pressure range, and a stable and well-organized mist water shape can be obtained.

As shown in FIG. 7, in the above embodiment, the first water discharge hole h1 is located below the pressure adjusting member 42, whereas the second water discharge hole h2 is disengaged from the lower side of the pressure adjusting member 42. It is in the same position. The space h13 in the first hole is located below the pressure adjusting member 42. On the other hand, the second hole inner space h23 is located at a position separated from the lower side of the pressure adjusting member 42. The water pressure P1 and the water pressure P2 may affect the floating behavior of the pressure adjusting member 42, but the influence from the water pressure P1 is smaller than the influence from the water pressure P2. When the water pressure P1 becomes high, the receiving pressure received from the lower side of the pressure adjusting member 42 increases, and the pressure adjusting member 42 may float. The water discharge head 8 is configured such that the pressure adjusting member 42 floats due to an increase in the water pressure P1. When the water pressure difference (P1-P2) becomes large, the pressure adjusting member 42 floats. When the water pressure P1 becomes larger than the water pressure P2, the pressure adjusting member 42 is configured to move in a direction away from the water discharge hole arranging portion 24 (water discharge screen 70). When the water pressure P1 exceeds a predetermined threshold value, the pressure adjusting member 42 floats. When the water supply pressure exceeds a predetermined threshold value, the pressure adjusting member 42 floats. The water supply pressure can be defined as the water pressure in the storage space 32.

The threshold value of the water supply pressure when the pressure adjusting member 42 floats can be appropriately set based on the use of the water discharge head 8 and the degree of formation of a water shape by the first water discharge hole h1. The threshold value of this water supply pressure can be set to the water supply pressure when the water discharge amount is smaller than the maximum value and the water discharge amount is frequently used. For example, the threshold value of the water supply pressure may be 0.01 MPa or more and 0.3 MPa or less, further 0.02 MPa or more and 0.25 MPa or less, and further 0.05 MPa or more and 0.15 MPa or less. The water discharge head 8 having this threshold value can be suitably used in kitchens, washbasins, bathrooms and the like.

Factors that determine whether or not the pressure adjusting member 42 floats are the pressure received from the upper side (upstream side) of the pressure adjusting member 42 (the receiving pressure from the storage space 32), gravity, buoyancy, and the lower side of the pressure adjusting member 42 ( The receiving pressure from the downstream side), etc. can be mentioned. The receiving pressure from the lower side includes the receiving pressure from the water pressure P1. Factors other than gravity can change with water pressure. The water pressure P1 can change depending on the flow velocity of the spiral flow SF2. It is difficult to quantitatively and accurately grasp the conditions under which the pressure adjusting member 42 floats. However, this condition can be grasped by a moderate experiment without requiring an excessive experiment. By adjusting the element that increases the force in the floating direction (upward) and the element that increases the force in the non-floating direction (downward), the pressure adjusting member 42 that floats at a desired water supply pressure can be designed. Specific adjustment items include the hole diameter and number of the first water supply holes s1, the weight of the pressure adjusting member 42, the volume of the pressure adjusting member 42, the specific gravity of the pressure adjusting member 42, and the like.

In the above embodiment, the bypass flow path b1 is formed even when the pressure adjusting member 42 is not floating. As shown by the enlarged portion of FIG. 7, a (small) gap g2 is formed between the water discharge hole arrangement portion 24 (water discharge screen 70) and the pressure adjusting member 42. The bypass flow path b1 is formed by the gap g2. The cross-sectional area of the bypass flow path b1 (width of the gap g2) is smaller than when the pressure adjusting member 42 floats. As shown in FIGS. 8 (d) and 8 (e), the pressure adjusting member 42 has a contact projection 69 abutting on the water discharge hole arrangement portion 24 (water discharge screen 70) on the lower surface thereof. The abutting projection 69 forms the bypass flow path b1 even when the pressure adjusting member 42 is not floating. When the pressure adjusting member 42 is not floating, the bypass flow path b1 may not be formed.

In this way, at least in a state where the pressure adjusting member 42 moves away from the water discharge hole arranging portion 24, a bypass flow path b1 is formed between the pressure adjusting member 42 and the water discharge hole arranging portion 24. The bypass flow path b1 is a flow path that directly connects the first water discharge hole h1 and the second water discharge hole h2 without passing through the pressure adjusting member 42. The bypass flow path b1 is formed between the pressure adjusting member 42 and the water discharge hole arranging portion 24. The larger the amount of movement of the pressure adjusting member 42 (the amount of floating of the pressure adjusting member 42) in the direction away from the water discharge hole arranging portion 24, the more the bypass flow path b1 is expanded. The bypass flow path b1 can be expanded or contracted according to the water pressure P1. The moving pressure adjusting member 42 acts like a relief valve. The moving pressure adjusting member 42 can adjust the water pressure P1 according to the water supply pressure.

The movable distance D1 (see FIG. 7) of the pressure adjusting member 42 is not limited. The movable distance D1 can be appropriately set in consideration of the state of water discharge (water shape, etc.) from the first water discharge hole h1. If this movable distance is excessive, the stability of the pressure P1 when the pressure adjusting member 42 floats may decrease. From this point of view, the movable distance D1 can be 0.5 mm or less, further 0.4 mm or less, and further 0.3 mm or less. From the viewpoint of ensuring the effect of the bypass flow path b1, the movable distance D1 can be 0.15 mm or more, further 0.2 mm or more, and further 0.25 mm or more. In the above embodiment, the movable distance D1 is set to 0.25 mm. In the above embodiment, the gap g1 (FIG. 7) when the pressure adjusting member 42 is not floating corresponds to the movable distance D1.

The number of the first water discharge holes h1 may be one or a plurality. In the above embodiment, there are a plurality of first water discharge holes h1. The mist hole group in which a plurality of mist holes are arranged on the circumference preferably produces a mist flow containing a large number of ultrafine bubbles. This mist flow enhances detergency.

The number of the second water discharge holes h2 may be one or a plurality. In the above embodiment, there are a plurality of second water discharge holes h2. A plurality of second water discharge holes h2 are arranged on the circumference to form a shower hole group. A shower water type Sw is formed by this group of shower holes. A plurality of second water discharge holes h2 are arranged on the peripheral side of the water discharge hole arrangement portion 24 (water discharge screen 70) with respect to the first water discharge hole h1 (mist hole). As shown in FIG. 12, the shower water form Sw covers the outside of the mist water form Mt. The shower water type Sw acts as a curtain that reduces the water splash (excessive diffusion) of the mist water type Mt.

In the water discharge member of the present disclosure, a plurality of water forms can be preferably discharged at the same time. By combining the roles of each water form, good water discharge can be obtained as a whole. In the above embodiment, the mist water type Mt and the shower water type Sw are discharged at the same time. As described above, the simultaneous water discharge of the mist water type Mt and the shower water type Sw can reduce the water splash of the mist water type Mt. With the spouting of only the mist water type Mt, the feeling of hitting the spouting water may be too weak for the user. Further, in the case of spouting only the mist water type Mt, the amount of spouting water is too small, which may cause problems such as difficulty in flushing bubbles and dirt, and the water heater not operating. Simultaneous spouting of mist water type Mt and shower water type Sw can solve these problems.

In FIG. 12, the reference numeral CL indicates the center line of the water discharge hole arranging portion 24 (screen member 44). In FIG. 12, the reference numeral L1 is the center line of the first water discharge hole h1. In FIG. 12, the reference numeral L2 is the center line of the second water discharge hole h2. The center line L2 is outward facing. That is, the center line L2 moves away from the center line CL as the water discharge distance increases. On the other hand, the center line L1 is directed inward. That is, the center line L1 approaches the center line CL as the water discharge distance increases. With these configurations, an appropriate shower jet angle can be obtained, and the detergency by mist spouting is enhanced.

In the above embodiment, water is discharged from both the first water discharge hole h1 and the second water discharge hole h2 at the same time. The water discharge member of the present disclosure may further have a switching mechanism for selecting a water discharge hole and switching the water shape. This switching mechanism is known in watering nozzles and the like, and for example, this known switching mechanism can be used. In the water discharge member having this switching mechanism, the water discharge may be switched in two ways: (1) water discharge from only the first water discharge hole h1 and (2) water discharge from only the second water discharge hole h2. Further, the water discharge can be switched from both (1) water discharge from only the first water discharge hole h1, (2) water discharge from only the second water discharge hole h2, and (3) water discharge from both the first water discharge hole h1 and the second water discharge hole h2. It may include three ways of spouting water.

In addition to the first spout hole h1 and the second spout hole h2, a third spout hole may be provided. In this case, the switching of water discharge may include (1) water discharge from only the first water discharge hole h1 and the second water discharge hole h2, and (2) water discharge from only the third water discharge hole h3.

Examples of the material of the pressure adjusting member 42 include resin or metal. From the viewpoint of levitation of the pressure adjusting member 42, the weight and specific gravity of the pressure adjusting member 42 are preferably set. From this point of view, the material of the pressure adjusting member 42 is preferably resin. From the viewpoint of moldability, the material of the pressure adjusting member 42 is preferably resin. When the material is a resin, a thermoplastic resin that is easy to mold is preferable. From the viewpoint of moldability, polyoxymethylene (POM), polyphenylene sulfide (PPS), acrylonitrile butadiene styrene copolymer (ABS) and polypropylene (PP) are more preferable. If the pressure adjusting member 42 is deformed non-uniformly due to water pressure, the cross-sectional area of the bypass flow path b1 fluctuates, and the stability of water discharge may decrease. Further, the pressure adjusting member 42 that reciprocates during use has high wear resistance, so that the operation accuracy is improved. From the viewpoint of rigidity and wear resistance, polyoxymethylene (POM) or polyphenylene sulfide (PPS) is preferable, and polyphenylene sulfide (PPS) is particularly preferable.

The following appendices are part of the invention contained in this disclosure.
[Appendix 1]
The first water discharge hole having the space inside the first hole,
A second spout hole having a space inside the second hole,
A water discharge hole arrangement portion provided with the first water discharge hole and the second water discharge hole, and
The storage space provided on the upstream side of the water discharge hole arrangement portion and
A main water supply channel that includes the storage space and supplies water to this storage space,
A pressure adjusting member forming a partition wall between the water discharge hole arrangement portion and the storage space,
A first sub-water supply channel that supplies water from the storage space toward the first water discharge hole,
A second auxiliary water supply channel that supplies water from the storage space toward the second water discharge hole,
Have and
At least a part of the first sub water supply channel and at least a part of the second sub water supply channel are formed by the pressure adjusting member.
A water discharge member in which the pressure adjusting member individually sets the pressure loss of the first sub water supply channel and the pressure loss of the second sub water supply channel.
[Appendix 2]
The first water discharge hole having the space inside the first hole,
A second spout hole having a space inside the second hole,
A water discharge hole arrangement portion provided with the first water discharge hole and the second water discharge hole, and
The storage space provided on the upstream side of the water discharge hole arrangement portion and
A main water supply channel that includes the storage space and supplies water to this storage space,
A pressure adjusting member forming a partition wall between the water discharge hole arrangement portion and the storage space,
A first sub-water supply channel that supplies water from the storage space toward the first water discharge hole,
A second auxiliary water supply channel that supplies water from the storage space toward the second water discharge hole,
Have and
At least a part of the first sub water supply channel and at least a part of the second sub water supply channel are formed by the pressure adjusting member.
The pressure adjusting member regulates the first sub-water supply channel and the second sub-water supply channel so as to reduce the difference between the pressure loss of the first water discharge hole and the pressure loss of the second water discharge hole. Water discharge member.
[Appendix 3]
Appendix 1 or 2 in which the pressure adjusting member has a first water supply hole forming a part of the first sub water supply channel and a second water supply hole forming a part of the second sub water supply channel. The water discharge member described in.
[Appendix 4]
The pressure loss of the second water discharge hole is smaller than the pressure loss of the first water discharge hole.
The water discharge member according to Appendix 3, wherein the pressure loss of the second water supply hole is larger than the pressure loss of the first water supply hole.
[Appendix 5]
The water discharge member according to any one of Supplementary note 1 to 4, wherein the pressure adjusting member is arranged so as to be able to move in a state in which the pressure adjusting member can move in the contacting direction with respect to the water discharge hole arranging portion.
[Appendix 6]
The water discharge member according to Appendix 5, which is configured to move the pressure adjusting member in a direction away from the water discharge hole arrangement portion when the water supply pressure exceeds a predetermined threshold value.
[Appendix 7]
The space inside the first hole is located below the pressure adjusting member.
The water discharge member according to Appendix 5 or 6, wherein the space inside the second hole is located at a position away from the lower side of the pressure adjusting member.
[Appendix 8]
The number of the first water discharge holes is one or more, and the number is one or more.
The number of the second water discharge holes is a plurality,
The first water discharge hole is a mist hole that forms mist, and is
The water discharge member according to any one of Supplementary note 1 to 7, wherein a plurality of the second water discharge holes are arranged on the peripheral side of the water discharge hole arrangement portion with respect to the mist hole to form a shower water shape. ..
[Appendix 9]
The water discharge member according to any one of Supplementary note 1 to 8, wherein the main water supply channel has a spiral flow forming portion and a fine bubble generating portion including a constricted portion.
[Appendix 10]
The water discharge member according to any one of Supplementary note 1 to 9, wherein the first water discharge hole has a fine bubble miniaturization portion including a spiral flow forming portion and a constricted portion.
[Appendix 11]
A water discharge device including the water discharge member according to any one of Supplementary note 1 to 10, a water discharge amount adjusting mechanism, and an operation unit capable of adjusting the water discharge amount.

The present application also discloses other inventions not included in the claimed invention (including the independent form claim). Each of the forms, members, configurations and combinations thereof described in the claims and embodiments of the present application is recognized as an invention based on the action and effect of each.

Each of the embodiments, members, configurations, etc. shown in the above embodiments is the present application, including the invention according to the present invention, individually, even if all the embodiments, members, or configurations of these embodiments are not provided. It can be applied to all the described inventions.

2 ... Water discharge member 4 ... Main body 6 ... Lever handle 8 ... Water discharge head 22 ... Main water supply channel 24 ... Water discharge hole arrangement 27 ... Fine bubble generator 28 ...・ Spiral flow forming part of main water supply channel 30 ・ ・ ・ Constriction part of main water supply channel 32 ・ ・ ・ Storage space 42 ・ ・ ・ Pressure adjustment member 44 ・ ・ ・ Screen member 49 ・ ・ ・ Fine bubble miniaturization part 50 ・ ・・ Spiral flow forming part of the first water discharge hole 52 ・ ・ ・ Constriction part of the first water discharge hole 70 ・ ・ ・ Water discharge screen s1 ・ ・ ・ First water supply hole s2 ・ ・ ・ Second water supply hole h1 ・ ・ ・ First water discharge Hole h11 ... Inlet opening h12 ... Exit opening h13 ... First hole space h2 ... Second water spouting hole h21 ... Inlet opening h22 ... Exit opening h23 ... Inside the second hole Space f1 ... 1st sub water supply channel f2 ... 2nd sub water supply channel b1 ... Bypass flow path SF1 ... Spiral flow formed in the main water supply channel SF2 ... Formed by the first water discharge hole Spiral flow

Claims (11)

The first water discharge hole having the space inside the first hole,
A second spout hole having a space inside the second hole,
A water discharge hole arrangement portion provided with the first water discharge hole and the second water discharge hole, and
The storage space provided on the upstream side of the water discharge hole arrangement portion and
A main water supply channel that includes the storage space and supplies water to this storage space,
A pressure adjusting member forming a partition wall between the water discharge hole arrangement portion and the storage space,
A first sub-water supply channel that supplies water from the storage space toward the first water discharge hole,
A second auxiliary water supply channel that supplies water from the storage space toward the second water discharge hole,
Have and
At least a part of the first sub water supply channel and at least a part of the second sub water supply channel are formed by the pressure adjusting member.
A water discharge member in which the pressure adjusting member individually sets the pressure loss of the first sub water supply channel and the pressure loss of the second sub water supply channel. The first water discharge hole having the space inside the first hole,
A second spout hole having a space inside the second hole,
A water discharge hole arrangement portion provided with the first water discharge hole and the second water discharge hole, and
The storage space provided on the upstream side of the water discharge hole arrangement portion and
A main water supply channel that includes the storage space and supplies water to this storage space,
A pressure adjusting member forming a partition wall between the water discharge hole arrangement portion and the storage space,
A first sub-water supply channel that supplies water from the storage space toward the first water discharge hole,
A second auxiliary water supply channel that supplies water from the storage space toward the second water discharge hole,
Have and
At least a part of the first sub water supply channel and at least a part of the second sub water supply channel are formed by the pressure adjusting member.
The pressure adjusting member regulates the first sub-water supply channel and the second sub-water supply channel so as to reduce the difference between the pressure loss of the first water discharge hole and the pressure loss of the second water discharge hole. Water discharge member. 1. 2. The water discharge member according to 2. The pressure loss of the second water discharge hole is smaller than the pressure loss of the first water discharge hole.
The water discharge member according to claim 3, wherein the pressure loss of the second water supply hole is larger than the pressure loss of the first water supply hole. The water discharge member according to any one of claims 1 to 4, wherein the pressure adjusting member is arranged in a state where the pressure adjusting member can move in a state of being able to move in a state of being able to move in a contacting direction with respect to the water discharge hole arranging portion. The water discharge member according to claim 5, wherein when the water supply pressure exceeds a predetermined threshold value, the pressure adjusting member moves in a direction away from the water discharge hole arrangement portion. The space inside the first hole is located below the pressure adjusting member.
The water discharge member according to claim 5 or 6, wherein the space inside the second hole is located at a position away from the lower side of the pressure adjusting member. The number of the first water discharge holes is one or more, and the number is one or more.
The number of the second water discharge holes is a plurality,
The first water discharge hole is a mist hole that forms mist, and is
The water discharge according to any one of claims 1 to 7, wherein a plurality of the second water discharge holes are arranged on the peripheral side of the water discharge hole arrangement portion with respect to the mist hole to form a shower water shape. Element. The water discharge member according to any one of claims 1 to 8, wherein the main water supply channel has a fine bubble generating portion including a spiral flow forming portion and a constricted portion. The water discharge member according to any one of claims 1 to 9, wherein the first water discharge hole has a fine bubble miniaturization portion including a spiral flow forming portion and a constricted portion. A water discharge device including the water discharge member according to any one of claims 1 to 10, a water discharge amount adjusting mechanism, and an operation unit capable of adjusting the water discharge amount.

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