Water dispensing device and bathroom

Abstract

A water discharge device according to the present invention comprises a lather generator 5. The lather generator 5 comprises: a lather generator body 40 that has a hollow, substantially cylindrical shape; a liquid mixture inlet 41 and an air inlet 42 for the inflow of fluids into the lather generator body 40; a pre-agitation section 45 that pre-agitates the fluids flowing from the liquid mixture inlet 41 and the air inlet 42 in a direction orthogonal to the axial direction of the lather generator body 40; a main agitation section 46 that agitates the fluids that have traversed the pre-agitation section 45 and are flowing in the axial direction; and an outlet 44 that allows for the outflow of the lather generated by the pre-agitation section 45 and the main agitation section 46 to the outside of the lather generator body.

Description

Water discharge device

[0001] The present invention relates to a water discharge device capable of discharging foam.

[0002] A conventional foaming device is known that generates and discharges foam by stirring, in a stirring section, a gas-liquid mixed fluid obtained by mixing water and a liquid containing a foaming component with compressed air. Such a foaming device includes porous bodies arranged in multiple stages along a flow path of the gas-liquid mixed fluid (see, for example, Patent Document 1).

[0003] JP 2013-17948 A

[0004] In the foaming device described above, since a plurality of porous bodies are arranged along a flow path in one direction, the foaming device tends to become large in size, which may lead to an increase in the size of the water discharge device using the foaming device.

[0005] The present disclosure has been made in view of such problems, and its purpose is to provide a technique for miniaturizing a foaming device in a water discharge device equipped with a foaming device.

[0006] In order to solve the above problems, one embodiment of the water-discharging device of the present invention is a water-discharging device equipped with a foamer, which comprises a foamer main body having a hollow, approximately cylindrical shape, an inlet for allowing fluid to flow into the foamer main body, a pre-mixing section that pre-mixes the fluid flowing from the inlet in a direction perpendicular to the axial direction of the foamer main body, a main mixing section that main-mixes the fluid flowing in the axial direction after passing through the pre-mixing section, and an outlet that discharges foam generated by the pre-mixing section and the main mixing section to the outside of the foamer main body.

[0007] FIG. 1 is a perspective view of a water discharge device according to an embodiment. FIG. 2 is a block diagram showing an example of the configuration of a water channel system and an electrical circuit system of a water discharge device. FIG. 3 is a perspective view of a foaming device as viewed from the clean water inlet side. FIG. 4 is a perspective view of a foaming device as viewed from the mixed liquid inlet and air inlet sides. FIG. 5 is a cross-sectional perspective view of a foaming device. FIG. 6 is an exploded perspective view of a foaming device. FIG. 7 is a perspective view of a porous body accommodating member and a lid. FIG. 8 is a perspective view showing a state in which the lid has been removed from the porous body accommodating member. FIG. 9 is a perspective view showing a porous body.

[0008] The present invention will be described below based on preferred embodiments with reference to the drawings. The following configurations are for illustrative purposes only to facilitate understanding of the present disclosure, and the scope of the present disclosure is defined solely by the appended claims. Identical or equivalent components and parts shown in each drawing are designated by the same reference numerals, and redundant explanations will be omitted where appropriate. Furthermore, the dimensions of the components in each drawing are enlarged or reduced as appropriate to facilitate understanding. Furthermore, some components that are not important for explaining the embodiments in each drawing are omitted.

[0009] The water discharger 1 according to this embodiment discharges foam generated by mixing compressed air with a mixture of water and a liquid containing a foaming component. The water discharger 1 is mainly installed and used in a bathroom.

[0010] Referring to Figure 1, the water discharger 1 houses piping and various components inside a rectangular parallelepiped case 10. A hose 81 extending from a water supply device 80 is connected to a water supply port 11 of the water discharger 1, and water is supplied from the water supply device 80. The water supply device 80 has, for example, a temperature adjustment function, a flow rate adjustment function, and a function for switching between water flow and water stop.

[0011] The water discharger 1 has a hose 82 of a shower head 83 connected to the water outlet 12. The water discharger 1 discharges either water or bubbles from the water outlet 12, and either water or bubbles is discharged to the outside from the shower head 83 through the hose 82. The water discharger 1 may be connected to a device other than the shower head 83. The water discharger 1 may also directly discharge either water or bubbles to the outside. The water discharger 1 may be configured to include discharge components such as the shower head 83. The water discharger 1 may have all or part of the functions of the water supply device 80.

[0012] A liquid supply container 2 for replenishing a liquid containing a foaming component is detachably connected to the water discharger 1. As shown in Fig. 1, a portion of the liquid supply container 2 protrudes from the top surface of a case 10 that covers the outside of the water discharger 1. By adopting a structure in which a portion of the liquid supply container 2 protrudes from the case 10 in this way, the device can be made more compact than when a liquid tank is built into the case 10. Furthermore, by adopting a structure in which a portion of the liquid supply container 2 protrudes, the remaining amount of liquid in the liquid supply container 2 can be easily checked.

[0013] The liquid supply container 2 can be easily attached and detached by gripping the top of the liquid supply container 2. By making the liquid supply container 2 easily replaceable, it is possible to enjoy changing the type of liquid depending on the mood of the day.

[0014] On the front of the case 10, there are arranged operation buttons 13 that can be operated by the user, and a display 14 that can be seen by the user. The display 14 is composed of components such as an LED and a liquid crystal display. The size of the case 10 is, for example, approximately 15 cm in height, 20 cm in width, and 5 cm in depth. The size of the case 10 is not limited to these. The display 14 may also display the amount of liquid remaining in the liquid refill container 2. The amount of liquid remaining may be detected using a weight sensor or a water level detection sensor.

[0015] Referring to Figure 2, the water discharge device 1 includes a liquid supply container 2, a switch 3, a liquid suction device 4, a foaming device 5, a compressor 6, a control circuit 8, and a power supply 9. The switch 3, the liquid suction device 4, the foaming device 5, the compressor 6, the control circuit 8, and the power supply 9 are housed in a case 10. The liquid supply container 2 can be attached to a container attachment portion (not shown) provided on the case 10. A check valve 90 is connected downstream of the water supply port 11, and the check valve 90 and the switch 3 are connected by a flow path 110. The check valve 90 prevents water from flowing back from the flow path 110 toward the water supply port 11.

[0016] The switch 3 switches the flow of water to two flow paths 111 and 112 branching from the flow path 110. One of the flow paths 111 is connected to the foamer 5. A check valve 91 provided in the flow path 111 prevents backflow from the foamer 5 side to the switch 3 side. The foamer passes the water from the flow path 111 and flows it to a flow path 115. The flow path 115 is connected to the water outlet 12.

[0017] A flow rate regulator 93 and a check valve 94 are disposed in the other flow path 112. Flow path 112 is connected to the liquid aspirator 4. The flow rate regulator 93 is composed of a constant flow valve, a pressure reducing valve, etc. The flow rate regulator 93 adjusts the flow rate on the downstream side to, for example, about 1 liter per minute. The check valve 94 prevents backflow from the liquid aspirator 4 side to the switch 3 side.

[0018] The liquid aspirator 4 is, for example, an ejector. The liquid aspirator 4 aspirates the liquid supplied from the liquid supply container 2 into the water flowing in from the flow path 112, mixes it, and flows it to the downstream flow path 113. The liquid supply container 2 and the liquid aspirator 4 are connected by a flow path 114. A check valve 95 is arranged in the flow path 114 to prevent backflow from the liquid aspirator 4 side to the liquid supply container 2 side.

[0019] In addition to the above-mentioned flow path 111, flow path 113 is also connected to the foamer 5. Flow path 113 supplies mixed water, which is a mixture of water and a liquid containing foaming ingredients, to the foamer 5. The foamer 5 generates foam by mixing compressed air from the compressor 6 with the mixed water supplied from flow path 113, and then flows the foam into flow path 115. The compressor 6 sends compressed air to the foamer 5 through an air flow path 116. A check valve 96 is arranged in flow path 116 to prevent backflow from the foamer 5 side to the compressor 6 side. The water discharge device 1 is capable of discharging fine foam by forming fine bubbles by the foamer 5.

[0020] The control circuit unit 8 receives power from the power supply unit 9 and operates the switch 3, compressor 6, etc. The power supply unit 9 is, for example, a variety of batteries such as a lithium-ion battery. The power supply unit 9 may be configured as a power supply circuit for using power supplied from a household power source. The control circuit unit 8 accepts operation input from the connected operation button 13 and operates the switch 3, compressor 6, etc. The control circuit unit 8 displays information such as the operating status of the water discharger 1 and the remaining power of the power supply unit 9 on the display 14.

[0021] By operating the operation button 13, the water discharge device 1 can be switched between a mode in which water is discharged from the water outlet 12 (water discharge mode) and a mode in which foam is discharged from the water outlet 12. In the water discharge mode, the water supplied from the water supply port 11 is diverted by the switch 3 to the flow paths 111 and 115, and is discharged from the water outlet 12 without generating foam. On the other hand, in the foam discharge mode (foam discharge mode), the water supplied from the water supply port 11 is diverted by the switch 3 to the flow paths 112, 113, and 115, and is turned into foam, which is then discharged from the water outlet 12.

[0022] The foamer 5 will be described with reference to Figures 3 and 4. The foamer 5 generates foam by stirring the fluid flowing in from the inlet in the stirring section, and causes the foam to flow out from the outlet.

[0023] The foamer 5 includes a foamer main body 40, a mixed liquid inlet 41, an air inlet 42, a clean water inlet 43, and an outlet 44. The foamer main body 40 has a substantially cylindrical shape. The mixed liquid inlet 41, the air inlet 42, and the clean water inlet 43 are provided on the side of the foamer main body 40. The outlet 44 is provided in the upper part of the foamer main body 40.

[0024] A flow path 113 is connected to the mixed liquid inlet 41, and mixed water, which is a mixture of water and a liquid containing a foaming component, flows from the liquid suction device 4 into the mixed liquid inlet 41. A flow path 116 is connected to the air inlet 42, and compressed air flows from the compressor 6 into the air inlet 42. A flow path 111 is connected to the clean water inlet 43, and clean water from the water supply port 11 flows into the clean water inlet 43. A flow path 115 is connected to the outlet 44. The clean water or foam flowing out from the outlet 44 is sent to the water outlet 12 via the flow path 115 and is discharged from the water outlet 12.

[0025] The internal structure of the foamer 5 will be described with reference to Figures 5 and 6. The foamer body 40 has a hollow, approximately cylindrical shape and has an opening 60 at one end (lower end). The lower end of the foamer body 40 is watertightly sealed by a lid 49. The shape of the foamer body 40 is not limited to a hollow, approximately cylindrical shape, and may be any hollow, approximately cylindrical shape. The shape of the foamer body 40 may be, for example, a hollow, approximately square cylindrical shape. The foamer body 40 has an axis Ax in the longitudinal direction.

[0026] A mixed liquid inlet 41, an air inlet 42, and a clean water inlet 43 are provided on the side of the foamer body 40. The mixed liquid inlet 41, the air inlet 42, and the clean water inlet 43 are connected to the internal space of the foamer body 40.

[0027] The internal space of the foamer main body 40 is provided with a pre-mixing section 45 and a main mixing section 46 located downstream (vertically above) of the pre-mixing section 45. The pre-mixing section 45 and the main mixing section 46 form the mixing section of the foamer 5. The mixed liquid inlet 41, the air inlet 42, and the clean water inlet 43 are connected to the pre-mixing section 45. Therefore, the fluids from the mixed liquid inlet 41, the air inlet 42, and the clean water inlet 43 first flow into the pre-mixing section 45.

[0028] In the water discharge mode, clean water flows into the pre-mixing section 45 from the clean water inlet 43. This clean water passes through the pre-mixing section 45 and the main mixing section 46 as is (without generating bubbles) and is discharged from the outlet 44.

[0029] In the foam discharge mode, mixed water flows into the pre-mixing section 45 through the mixed liquid inlet 41, and compressed air flows into the air inlet 42. Upon entering the pre-mixing section 45, the mixed water and compressed air are mixed to form a gas-liquid mixed fluid. The pre-mixing section 45 pre-mixes the gas-liquid mixed fluid flowing from the mixed liquid inlet 41 and the air inlet 42 in a direction perpendicular to the axial direction Ax of the foamer main body 40. This pre-mixing promotes homogenization and fine particle size reduction of the gas-liquid mixed fluid. The gas-liquid mixed fluid that has passed through the pre-mixing section 45 then flows into the main mixing section 46. The main mixing section 46 performs main mixing on the fluid flowing in the axial direction Ax that has passed through the pre-mixing section 45. This main mixing generates a fine, homogenous foam fluid (foamed fluid). The foam fluid generated by the pre-mixing section 45 and the main mixing section 46 flows out of the foamer main body 40 through an outlet 44 located in the upper part of the foamer main body 40.

[0030] The pre-mixing section 45 and the main mixing section 46 each include porous bodies arranged in multiple stages along the direction of fluid flow. Specifically, the pre-mixing section 45 includes multiple pre-mixing porous bodies 48 each having a relatively large porosity. The main mixing section, located downstream of the pre-mixing section 45, includes multiple main mixing porous bodies 47 each having a relatively small porosity.

[0031] The term "porous body" as used in this specification includes porous members such as ceramic materials and sintered metal materials, woven or nonwoven fabrics made of metal fibers or resin fibers, and mesh bodies (e.g., wire mesh) made of metal wires or resin wires.

[0032] The premixing porous body 48 includes a first premixing porous body 48a and a second premixing porous body 48b. The first premixing porous body 48a and the second premixing porous body 48b are stacked at a predetermined interval in a direction perpendicular to the axis Ax. The first premixing porous body 48a and the second premixing porous body 48b are concentrically arranged around the axis Ax. More specifically, the first premixing porous body 48a is arranged radially outward from the axis Ax, and the second premixing porous body 48b is arranged radially inward from the axis Ax.

[0033] The main stirring section 46 includes seven main stirring porous bodies 47. The seven main stirring porous bodies 47 are stacked in the axial direction Ax at predetermined intervals. The number of main stirring porous bodies 47 is not particularly limited.

[0034] In this embodiment, the main mixing porous body 47 and the pre-mixing porous body 48 are attached to a porous body accommodating member 52 .

[0035] The stirring action of the pre-mixing section 45 and the main stirring section 46 will now be described. The gas-liquid mixture from the mixed liquid inlet 41 and the air inlet 42 flows in a direction perpendicular to the axial direction Ax of the foaming device main body 40 and enters the pre-mixing section 45. The gas-liquid mixture entering the pre-mixing section 45 is in a roughly stirred state. The gas-liquid mixture is stirred by flow turbulence (a rotating flow caused by countless non-uniform vortices) generated when passing through the pre-mixing porous body 48 with a relatively large porosity provided in the pre-mixing section 45, promoting homogenization and fine particle size reduction. This stirring is called "pre-mixing." The gas-liquid mixture, whose homogenization and fine particle size reduction have been promoted by the pre-mixing section 45, then changes direction upward in the axial direction Ax of the foaming device main body 40 and flows into the main stirring section 46. The gas-liquid mixture that flows into the main stirring section 46 flows in the axial direction Ax of the foaming device main body 40. The flow turbulence generated as the mixture passes through the main stirring section 46's porous main stirring bodies 47, which have a relatively small porosity, further stirs the mixture, resulting in a fine, homogeneous foamed fluid (foamed fluid) that corresponds to the porosity of the main stirring bodies 47. This stirring is called "main stirring." By sequentially stirring the gas-liquid mixture through the pre-mixing section 45, which has a pre-mixing porous body 48 with a relatively large porosity, and the main stirring section 46, which has a relatively small porosity, pressure loss due to the amplification of unnecessary flow turbulence can be suppressed, and a decrease in the critical flow rate can also be prevented. This allows for the efficient production of a fine, homogeneous foamed fluid.

[0036] As described above, the lid 49 watertightly seals the opening 60 at the lower end of the substantially cylindrical foaming device main body 40. The lid 49 is detachably attached to the opening 60 of the foaming device main body 40. A male thread 50 is formed on the outer periphery of the lid 49, and a female thread 51 is formed on the inner surface of the foaming device main body 40. The male thread 50 and the female thread 51 are threaded together to fix the lid 49 to the foaming device main body 40.

[0037] When removing the lid part 49 from the foaming device main body 40, the lid part 49 is grasped and rotated relative to the foaming device main body 40. This releases the engagement between the male thread 50 and the female thread 51, allowing the lid part 49 to be removed from the foaming device main body 40.

[0038] Please refer to Figures 7 and 8. Figure 7 shows the state in which the porous body container 52 and the lid 49 have been removed from the foaming device main body 40. The porous body container 52 has a hollow, generally cylindrical shape that can be inserted into the internal space of the foaming device main body 40. A recess 52a is provided at the lower end of the porous body container 52. Furthermore, a protrusion 49a is provided at the upper end of the lid 49. The porous body container 52 and the lid 49 can be assembled together by fitting the protrusion 49a of the lid 49 into the recess 52a of the porous body container 52. By assembling the porous body container 52 and the lid 49 together, when the lid 49 is removed from the foaming device main body 40, the porous body container 52 can also be removed from the foaming device main body 40. FIG. 8 shows a state in which the convex portion 49 a of the lid portion 49 is removed from the concave portion 52 a of the porous body-containing member 52 and the lid portion 49 is removed from the porous body-containing member 52 .

[0039] In this embodiment, of the seven main mixing porous bodies 47, the main mixing porous body 47a, which is the most downstream (the uppermost in terms of position), is molded integrally with the porous body housing member 52. This main mixing porous body 47a is provided in an opening 52b at the upper end of the porous body housing member 52. Furthermore, of the two premixing porous bodies 48, the first premixing porous body 48a, which is the most upstream (the radially outer side with respect to the axis Ax), is also molded integrally with the porous body housing member 52. A plurality of openings 56 are provided in the circumferential direction on the side surface of the lower part of the porous body housing member 52 for introducing fluids from the mixed liquid inlet 41, the air inlet 42, and the clean water inlet 43 into the porous body housing member 52. A first premixing porous body 48a is provided in each opening 56. Molding some of the porous bodies integrally with the porous body housing member 52 in this manner is advantageous for reducing the size of the foaming device 5.

[0040] The six main stirring porous bodies 47 other than the main stirring porous body 47a are housed in a porous body housing member 52. Each of these main stirring porous bodies 47 is held by a porous body holder 54. Figure 9 shows how the main stirring porous bodies 47 are held in the porous body holder 54. The porous body holder 54 is an annular member having a predetermined thickness, and holds the main stirring porous body 47 in the center in the thickness direction.

[0041] As shown in Figures 5 and 6, multiple porous body holders 54 are stacked to accommodate multiple main stirring porous bodies 47 in the porous body housing member 52. The thickness of the porous body holders 54 determines the spacing between adjacent main stirring porous bodies 47. The radial size of the porous body holders 54 may be slightly smaller than the inner diameter of the porous body housing member 52, taking into account ease of attachment and detachment. The inner diameter of the upper opening 52b of the porous body housing member 52 is narrower than the outer diameter of the porous body holder 54. This allows the porous body holder 54 inserted into the porous body housing member 52 through the lower opening 52d to be stopped just before the main stirring porous body 47a provided in the upper opening 52b.

[0042] The second pre-mixing porous body 48b is accommodated on the upstream side of the porous body accommodation member 52 (positionally below the main mixing porous body 47). The second pre-mixing porous body 48b is provided on the side surface of a hollow, substantially cylindrical support member 62. The support member 62 with the second pre-mixing porous body 48b provided thereon is inserted into the porous body accommodation member 52 through the opening 52d. When the support member 62 is inserted into the porous body accommodation member 52, the first pre-mixing porous body 48a and the second pre-mixing porous body 48b are stacked in a direction perpendicular to the axis Ax.

[0043] The lid 49 is provided with a support portion 49b that supports a support member 62 on which the second pre-mixing porous body 48b is provided. When the support member 62 is inserted into the porous body housing member 52 and the lid 49 is assembled to the porous body housing member 52, a lower end portion 62a of the support member 62 is supported by the support portion 49b of the lid 49. At this time, an upper end portion 62b of the support member 62 supports a plurality of porous body holders 54. In other words, by assembling the lid 49 to the porous body housing member 52 with the main-mixing porous body 47 and the second pre-mixing porous body 48b accommodated in the porous body housing member 52, the main-mixing porous body 47 and the second pre-mixing porous body 48b can be accommodated and held within the porous body housing member 52.

[0044] Generally, limescale and metal soaps can form in foaming machines. Limescale is a chalky deposit. Its main component is lime (calcium carbonate) precipitated from water. Hard water, in particular, is prone to limescale formation because it contains calcium and magnesium bicarbonates and other salts. Metal soaps are formed when soap components combine with calcium and magnesium in the water. If limescale or metal soaps form in a foaming machine, the porous structure can become clogged, potentially reducing the homogeneity and flow rate of the foam produced.

[0045] In the foaming device 5 according to this embodiment, the lid 49 is first grasped and rotated relative to the foaming device main body 40, thereby removing the porous body container 52 assembled with the lid 49 from the foaming device main body 40. Next, the protrusion 49a of the lid 49 is removed from the recess 52a of the porous body container 52, and the lid 49 is then removed from the porous body container 52, thereby removing the main mixing porous body 47 and the second pre-mixing porous body 48b from the porous body container 52. Since the main mixing porous body 47 and the second pre-mixing porous body 48b can be removed from the porous body container 52, limescale and metal soap adhering to the main mixing porous body 47 and the second pre-mixing porous body 48b can be easily cleaned with a brush or the like. The main mixing porous body 47a and the first pre-mixing porous body 48a, which are molded integrally with the porous body housing member 52, are also exposed to the outside and can be easily cleaned with a brush, etc. In this way, in the water discharger 1 according to this embodiment, the maintainability of the foaming device 5 can be greatly improved.

[0046] The foamer 5 used in the water discharger 1 according to this embodiment has been described above. The foamer 5 includes a pre-mixing section 45 and a main mixing section 46. The pre-mixing section 45 pre-mixes the fluid flowing from the mixed liquid inlet 41 and the air inlet 42 in a direction perpendicular to the axis Ax of the foamer main body 40. The main mixing section 46 main-mixes the fluid flowing in the axis Ax of the foamer main body 40 after passing through the pre-mixing section 45. By configuring the pre-mixing flow path and the main mixing flow path to be perpendicular to each other in this way, the foamer 5 can be made smaller than when the pre-mixing flow path and the main mixing flow path are configured in a single direction. Reducing the size of the foamer 5 is advantageous for reducing the size of the water discharger 1.

[0047] When introducing a fluid into the foamer main body 40 from an inlet on the side of the foamer main body 40, a space into which the fluid from the inlet flows is required. In the foamer 5 according to this embodiment, the premixing flow path is oriented perpendicular to the axis Ax of the foamer main body 40, so that premixing is performed in the space into which the fluid flows. By effectively utilizing the internal space of the foamer main body 40 in this way, the foamer 5 can be made smaller.

[0048] In the foamer 5 according to this embodiment, the fluid from the inlet on the side of the foamer main body 40 can be passed through the premixing section 45 without changing direction. This allows premixing to be performed with less pressure loss than when the fluid from the inlet on the side of the foamer main body is premixed after changing direction in the axial direction. As a result, it is possible to suppress a decrease in the critical flow rate, and it becomes possible to efficiently generate fine, uniform foam fluid.

[0049] The present invention has been described above based on the embodiments. These embodiments are merely examples, and it will be understood by those skilled in the art that various modifications and changes are possible within the scope of the claims of the present invention, and that such modifications and changes also fall within the scope of the claims of the present invention. Therefore, the descriptions and drawings in this specification should be treated as illustrative rather than restrictive.

[0050] The present invention can be used in a water discharge device that can discharge foam.

[0051] REFERENCE SIGNS LIST 1 Water discharge device, 2 Liquid supply container, 3 Switch, 4 Liquid suction device, 5 Foamer, 6 Compressor, 10 Case, 11 Water supply port, 12 Water discharge port, 40 Foamer main body, 41 Mixed liquid inlet, 42 Air inlet, 43 Clean water inlet, 44 Outlet, 45 Pre-mixing section, 46 Main mixing section, 47 Main mixing porous body, 48 Pre-mixing porous body, 49 Lid, 52 Porous body accommodating member, 54 Porous body holder.

Claims

1. A water discharge device equipped with a foaming device, The aforementioned foaming device is The foaming device has a hollow, roughly cylindrical body, An inlet for allowing fluid to flow into the foaming device body, A pre-stirring section that pre-stirs the fluid flowing from the inlet in a direction perpendicular to the axial direction of the foaming device body, The main stirring section stirs the fluid flowing in the axial direction that has passed through the pre-stirring section, An outlet for discharging foam generated by the pre-mixing section and the main mixing section to the outside of the foaming device body, A water discharge device equipped with the following features.

2. The pre-stirring section comprises a plurality of pre-stirring porous bodies having a relatively large porosity ratio, The stirring section comprises a plurality of porous stirring bodies having a relatively small porosity ratio. The water discharge device according to claim 1.

3. The water discharge device according to claim 2, wherein the plurality of pre-mixing porous bodies are stacked in a direction perpendicular to the axial direction.

4. The water discharge device according to claim 2 or 3, wherein the plurality of pre-mixing porous bodies are arranged to surround the axis of the foaming device body.

5. The water discharge device according to claim 2 or 3, wherein the plurality of porous stirring bodies are stacked in the axial direction.

6. The water discharge device according to claim 2 or 3, wherein the foaming device comprises a porous body for pre-stirring and a porous body housing member for housing the main stirring porous body.

7. The water discharge device according to claim 6, wherein the pre-mixing porous body and a part of the main mixing porous body are formed integrally with the porous body housing member.

8. The foaming body has an opening at one end in the axial direction, The foaming device is equipped with a lid that is detachably provided at the opening of the foaming device body, The pre-mixing section and the main mixing section can be removed from the foaming body through the opening by removing the lid from the opening of the foaming body. A water discharge device according to any one of claims 1 to 3.

9. A bathroom equipped with a water dispensing device according to any one of claims 1 to 3.