JP7465556B2 - Device for clouding hot water adapters and bubble generators - Google Patents

Description

This invention relates to a hot water adapter incorporating a bubble generator that generates microbubble water in which fine bubbles such as microbubbles are mixed into hot water, and a device for clouding the bubble generator.

In recent years, bathtub equipment that allows hot water containing microbubbles (including nanobubbles) (microbubble water) to be supplied to the bathtub from a hot water supply adapter has become well known in ordinary households.

Such a hot water adapter is fitted with a bubble generator and is configured to spray microbubble water from the bubble generator.

On the other hand, it has been reported that microbubble water has a warm bathing effect, such as a massage effect, a relaxing effect, and a weight loss effect. In order to improve and sustain this warm bathing effect, it is thought that it is preferable to break down the air bubbles in the microbubble water into smaller pieces, increase the number of bubbles, and make the microbubble water cloudy.

The following Patent Document 1 proposes a clouding device in which a porous body is installed at the nozzle of a microbubble water generator. This clouding device causes the microbubble water ejected from the nozzle of the bubble generator to pass through a porous body, thereby breaking down the bubbles and generating countless fine bubbles, thereby clouding the water.

JP 2009-136864 A

However, with conventional clouding devices, there are cases where the bubbles in the microbubble water are not broken down sufficiently, which can lead to an issue that the microbubble water cannot be clouded reliably.

This invention was made in consideration of the above problems, and aims to provide a hot water adapter and a bubble generator clouding device that can sufficiently break down the bubbles in the microbubble water and reliably cloud the microbubble water.

To achieve the above objective, the present invention has the following configuration:

[1] A hot water adapter that is installed in a bathtub and has an adapter body equipped with a bubble generator, and that allows microbubble water in which air bubbles are mixed into hot water to be sprayed from a nozzle of the bubble generator into the bathtub,
A device for making a white cloud is provided corresponding to the nozzle of the bubble generator,
The device for generating whitening is provided with a plurality of mesh sheets through which microbubble water passes in sequence, and the interval between adjacent mesh sheets is set to 2.0 mm to 3.0 mm;
A hot water adapter, wherein the mesh sheet has a mesh number of #60 to #100.

[2] A hot water adapter as described in the preceding paragraph 1, in which a straightening member for guiding the microbubble water that has passed through the mesh sheets downward is provided in correspondence with the downstream side of the mesh sheet that is located most downstream among the plurality of mesh sheets.

[3] A hot water adapter as described in paragraphs 1 or 2 above, in which the mesh sheet located most upstream of the multiple mesh sheets is spaced 2.5 mm to 4.0 mm apart from the nozzle of the bubble generator.

[4] A hot water adapter according to any one of the preceding paragraphs 1 to 3, in which the number of mesh sheets installed is 2 to 4.

[5] A filter is provided to cover a portion of the adapter body that corresponds to the inside of the bathtub, and a nozzle installation hole is provided in the filter in correspondence with the nozzle,
The opacification device is
A mesh member in which an outer peripheral edge portion of the mesh sheet is supported by a support ring;
a cylindrical casing in which the mesh members are housed via an opening at another end thereof as a downstream opening, and one end thereof as an upstream side is attached to the nozzle installation hole;
The hot water adapter according to any one of claims 1 to 4, further comprising a perforated cap that is removably attached to the downstream opening of the casing and that allows the passage of microbubble water while holding the mesh member within the casing.

[6] A device for making water cloudy, which is provided in correspondence with a nozzle of a bubble generator from which microbubble water in which air bubbles are mixed into hot water is sprayed,
It is equipped with multiple mesh sheets through which microbubble water passes in sequence,
The interval between adjacent mesh sheets is set to 2.0 mm to 3.0 mm,
The mesh sheet has a mesh number of #60 to #100.

According to the hot water adapter of the invention [1], the microbubble water sprayed from the bubble generator is broken down and refined each time it passes through multiple mesh sheets in sequence, so that the microbubble water is released into the bathtub in a cloudy state with countless fine bubbles dispersed throughout, making it possible to fill the bathtub with cloudy hot water and obtain a sufficient hot bath effect from the microbubble water.

The hot water adapter of invention [2] uses a straightening member to guide the microbubble water released into the bathtub downwards, preventing bubbles from rising inadvertently due to buoyancy. This allows the bubbles to remain in the bathtub water for a long period of time, and maintains the cloudy effect.

The hot water adapters of inventions [3] and [4] can achieve the above effects even more reliably.

According to the hot water adapter of the invention [5], the device for whitening comprises a casing, a mesh member housed within the casing, and a perforated cap that can be attached and detached to the opening of the casing. Therefore, the mesh member can be removed simply by removing the perforated cap from the casing, and maintenance work such as maintenance, inspection, and cleaning of the mesh sheet of the mesh member can be performed efficiently and easily.

The bubble generator clouding device of invention [6] can reliably cloud the microbubble water sprayed from the bubble generator, as described above.

FIG. 1 is a perspective view showing a bathtub hot water supply adaptor according to an embodiment of the present invention. FIG. 2 is a perspective view showing an adapter body in the hot water adapter of the embodiment. FIG. 3 is an enlarged side cross-sectional view showing the vicinity of an installation portion of a clouding nozzle as a clouding device in the hot water adapter of the embodiment. FIG. 4 is an exploded perspective view for explaining a state in which the clouding nozzle of the embodiment is attached to the filter. FIG. 5 is an exploded cross-sectional view for explaining a state in which the clouding nozzle of the embodiment is attached to the filter. FIG. 6 is a perspective view showing a mesh member of the clouding nozzle of the embodiment.

Figure 1 is a perspective view of a hot water adapter for a bathtub according to an embodiment of the present invention, Figure 2 is a perspective view of the adapter body of the hot water adapter according to the embodiment, and Figure 3 is a side cross-sectional view showing an enlarged view of the area around the installation part of the clouding nozzle as a clouding device in the hot water adapter according to the embodiment. As shown in these figures, the hot water adapter according to this embodiment is attached to the side wall of the bathtub, and in addition to the bath filling process in which hot water supplied from an outdoor water heater is supplied to the bathtub, and the reheating process in which hot water in the bathtub is sucked in and sent to the outdoor water heater where it is reheated and the high-temperature water is returned to the bathtub, it can also perform a bubble generation process in which microbubble water, which is hot water mixed with microbubbles (including nanobubbles), is sprayed into the hot water in the bathtub to generate microbubbles in the bathtub.

The hot water supply adapter of this embodiment comprises an adapter body 1 that is attached to the side wall of the bathtub in a penetrating state, a filter (cover member) 9 that is attached to the portion of the adapter body 1 that corresponds to the inside of the bathtub (portion arranged inside the tub), and a clouding nozzle 3 that is attached to the filter 9 and constitutes a clouding device. In the following explanation, in order to make the invention easier to understand, the inside of the bathtub along the axial direction of the hot water supply adapter (left side in FIG. 3) will be referred to as the "downstream side," "front side," or "surface side," and the outside of the bathtub (right side in FIG. 3) will be referred to as the "upstream side," "rear side," or "back side."

The rear end of the adapter body 1, which is located outside the bathtub, is provided with a supply pipe connection part 1a and a return pipe connection part 1b that are connected to the outdoor water heater via a supply pipe and a return pipe, and an intake pipe connection part 1c to which an intake pipe for taking in outside air is connected.

The portion of the adapter body 1 that is placed inside the tank has an outlet 11a at the bottom of its peripheral side and an inlet 11b at the front. In addition, the portion of the adapter body 1 that is placed inside the tank has a bubble generator 2 built into it from the front side, and the nozzle 21 of the bubble generator 2 is positioned so that it opens forward.

In addition, multiple flow paths are formed within the adapter body 1, and are configured so that hot and cold water supplied from the forward pipe connection part 1a is supplied to the discharge port 11a and the bubble generator 2 as needed, and outside air from the intake pipe connection part 1c is supplied to the bubble generator 2 as needed. The return pipe connection part 1b and the intake port 11b are also connected in communication.

A switching lever 25 is provided on the upper front of the in-tub placement portion of the adapter body 1. This switching lever 25 is configured to be able to switch between bubble generation mode and bath filling/reheating mode (bubble prohibited mode). In the bath filling/reheating mode, the supply of air from the intake pipe connection portion 1c to the bubble generator 2 is prohibited, and at the same time, the supply of hot water from the forward pipe connection portion 1a to the discharge port 11a is permitted. In the bubble generation mode, the supply of air from the intake pipe connection portion 1c to the bubble generator 2 is permitted, and at the same time, the flow path is switched so that hot water is supplied from the forward pipe connection portion 1a to the bubble generator 2. In other words, in the bubble generation mode, the supply of hot water from the forward pipe connection portion 1a to the discharge port 11a is prohibited, and the supply of hot water from the forward pipe connection portion 1a to the bubble generator 2 is permitted.

As shown in Figures 1, 3 to 5, the filter 9 is attached to cover the portion of the adapter body 1 that is placed inside the tank. The front wall of the filter 9 has a suction port 9b consisting of multiple through holes, and the lower part of the peripheral side wall has a discharge port 9a that corresponds to the discharge port 11a of the adapter body 1.

The front wall of the filter 9 is also formed with a lever operation opening 91 that corresponds to the switching lever 25 of the adapter body 1, and is configured so that the switching lever 25 can be operated through the lever operation opening 91 when the filter 9 is attached to the adapter body 1.

In addition, a nozzle installation hole 93 for attaching a clouding nozzle 3 is formed in the front wall of the filter 9, corresponding to the nozzle 21 of the bubble generator 2 of the adapter body 1.

When filling the bath with water in this embodiment of the hot water adapter, the switch lever 25 is set to the filling/reheating mode (no bubbles mode), the supply of air from the intake pipe connection 1c to the bubble generator 2 is prohibited, and hot water is supplied from the supply pipe connection 1a to the discharge port 9a. In this state, a command to fill the bath is given to the water heater via an operation panel attached to the bathroom wall or the like. This causes hot water to be discharged from both the supply port and the suction port of the water heater, and the hot water is supplied to the bathtub from the discharge ports 9a, 11a and the suction ports 9b, 11b of the supply pipe connection 1a and the return pipe connection 1b. In this way, hot water is supplied in two systems.

Depending on the model of water heater, the water filling process may be performed using a single transport. In this case, hot water is not supplied from the water heater to the return pipe connection 1b, but is supplied to the bathtub from the supply pipe connection 1a in a single system.

When performing the reheating process, the switch lever 25 is set to the bath/reheating mode (no bubbles allowed mode) and a reheating command is given to the water heater. This causes the suction action of the water heater to suck in hot water from the bathtub through the suction ports 9b, 11b, and the hot water is returned to the water heater through the return pipe connection 1b. The hot water returned to the water heater in this way is reheated and supplied from the water heater's hot water inlet to the supply pipe connection 1a, and then supplied into the bathtub from the discharge ports 9a, 11a.

When performing the bubble generation process, the switch lever 25 is set to the bubble generation mode, and the air from the intake pipe connection part 1c is supplied to the bubble generator 2, and the hot water from the forward pipe connection part 1a is supplied to the bubble generator 2. In this state, a reheat command is given to the water heater. As a result, the hot water in the bathtub is sucked in from the intake ports 9b and 11b and returned to the water heater as described above, while the hot water discharged from the hot water supply port of the water heater is supplied to the forward pipe connection part 1a and further supplied to the bubble generator 2. Furthermore, the suction effect caused by this ejection causes external air to be sucked in through the intake pipe connection part 1c and the air is supplied to the bubble generator 2. The air supplied in this way mixes with the hot water supplied to the bubble generator as described above to become microbubble water, and the microbubble water is ejected forward from the ejection port 21 of the bubble generator 2 and supplied to the clouding nozzle 3.

As shown in Figures 3 to 5, the clouding nozzle 3 installed in the nozzle installation hole 93 of the filter 9 includes a casing 4, three mesh members 6, a flow straightening member 7, and a perforated cap 5, and this clouding nozzle 3 is attached to the filter 9 via an O-ring 81 and a ring-shaped packing 82.

The casing 4 comprises a cylindrical mesh housing portion 41 and a small-diameter cylindrical attachment portion 42 connected to the rear of the mesh housing portion 41 and arranged coaxially with the mesh housing portion 41. The mesh housing portion 41 has an inner diameter dimension larger than the outer diameter dimension of the mesh member 6 described below, and is configured to be able to house the mesh member 6. The attachment portion 42 has an inner diameter dimension smaller than the outer diameter dimension of the mesh member 6, and a step portion 43 is formed between the inner peripheral surface of the mesh housing portion 41 and the inner peripheral surface of the attachment portion 42.

The outer peripheral surface of the mounting portion 42 has an outer peripheral protrusion 44 formed integrally at the rear end thereof, which is continuous in the circumferential direction and protrudes outward. Furthermore, a rotation prevention groove 45 is formed at the lower end of the outer peripheral surface of the mounting portion 42, which is continuous in the axial direction, and an inward flange 47 is formed near the upstream opening on the inner peripheral surface of the mounting portion 42.

The upper end of the inner peripheral surface of the mesh housing section 41 is formed to protrude downward (inward), and this portion is configured as the inner protruding section 46. A male thread is formed on the outer peripheral surface of the mesh housing section 41.

As shown in Figures 3 to 6, the mesh member 6 includes a disk-shaped mesh sheet 61 made of stainless steel or the like, and an annular support ring 62 provided along the outer periphery of the mesh sheet 61. In this embodiment, the mesh sheet 61 is made of a mesh-like member (net-like member) in which wires are stretched at equal intervals vertically and horizontally.

At the upper end of the support ring 62, a cutout 66 is formed by cutting out a part of the outer periphery in correspondence with the inner jutting portion 46 of the casing 4. Furthermore, the outer periphery of the support ring 62 corresponds to the inner periphery of the mesh housing portion 41 of the casing 4, and is formed one size smaller. This allows the mesh member 6 to be housed in the mesh housing portion 41 of the casing 4 from its front end opening, and in the housed state, the cutout 66 engages with the inner jutting portion 46, restricting the rotation of the mesh member 6 in the axial direction (circumferential direction) relative to the casing 4. In this embodiment, the clearance of the mesh member 6 with respect to the mesh housing portion 41 is set to 0.25 mm on one side, 0.5 mm in total. In other words, the outer diameter of the mesh member 6 is formed 0.5 mm smaller than the inner diameter of the mesh housing portion 41. This allows the mesh member 6 to be housed in a loose fit state in the mesh housing portion 41 of the casing 4.

Three mesh members 6 are housed inside the casing 4, lined up in the axial direction with their axes aligned. At this time, the support ring 62 of the rearmost mesh member 6, which is located at the farthest back (upstream side), abuts and engages with the stepped portion 43 of the casing 4, thereby positioning the mesh member 6 toward the rear.

The support ring 62 of the mesh member 6 has a predetermined thickness in the axial direction, and the support rings 62 of adjacent mesh members 6 are joined together to provide a gap between the mesh sheets 61 of adjacent mesh members 6. In other words, the support ring 62 functions as a spacer for forming a predetermined gap between adjacent mesh sheets 61, and the thickness of the support ring 62 is formed to correspond to the spacing S1 (see FIG. 3) between adjacent mesh sheets 61. The spacing S1 between adjacent mesh sheets 61 will be described in detail later.

The flow straightening member (louver) 7 is made of a synthetic resin molded product or the like, and is integral with a short cylindrical fitting portion 72 and a flange portion 75 provided on the outer periphery of the front end of the fitting portion 72. A notch 76 is formed at the upper end of the fitting portion 72, and the outer periphery is formed to correspond to the outer periphery of the mesh member 6. This allows the fitting portion 72 to be accommodated in the mesh accommodation portion 41 of the casing 4 in a non-rotating state.

Furthermore, on the inside of the straightening member 7, a number of strip-shaped fins 71 extending in the left-right direction are formed at predetermined intervals in the up-down direction. Each fin 71 is arranged so that it is inclined downward toward the front, with its front end positioned lower than its rear end.

The fitting portion 72 of this straightening member 7 is fitted into the front side of the mesh member 6 in the mesh housing portion 41 of the casing 4, and in this fitted state, the flange portion 75 abuts and engages with the front end face of the casing 4, thereby restricting the amount of fitting of the straightening member 7, and the fitting portion 72 is positioned corresponding to the support ring 62 of the foremost mesh member 6. Furthermore, in the fitted state, the straightening member 7 is prevented from rotating and positioned in the rotational direction by the notch portion 76 of the fitting portion 72 engaging with the inner protruding portion 46 of the casing 4.

The perforated cap 5 has a cylindrical peripheral wall 51 arranged on the outer periphery of the casing 4, and a stopper piece 55 formed to protrude inward from the front end of the peripheral wall 51 and provided opposite the flange portion 75 of the straightening member 7. In this perforated cap 5, the gap surrounded by the stopper piece 55 functions as an opening (water passage hole) 52 that allows the passage of microbubble water. Furthermore, a female thread is engraved on the inner surface of the peripheral wall 51 of the perforated cap 5 to correspond to the male thread of the casing 4.

The perforated cap 5 is screwed onto the outer periphery of the mesh housing portion 41 of the casing 4 until the restraining piece 55 is pressed against the straightening member 7, and the perforated cap 5 holds the straightening member 7 and the mesh member 6 inside the casing 4, and the clouding nozzle 3 is assembled. Needless to say, in this assembled state, the fitting portion 72 of the straightening member 7 holds the support ring 62 of the front mesh member 6 in place, preventing the mesh member 6 from slipping out forward.

On the other hand, a plurality of elastic hooks 94 that can engage with the outer circumferential protrusions 44 in the mounting portion 42 of the casing 4 of the clouding nozzle 3 are formed at intervals in the circumferential direction on the inner circumferential surface of the nozzle installation hole 93 in the filter 9 of the hot water supply adapter. Furthermore, a protrusion 95 that extends in the axial direction and can be inserted into the anti-rotation groove 45 in the mounting portion 42 of the casing 4 is formed at the lower end of the inner circumferential surface of the nozzle installation hole 93.

The clouding nozzle 3 is attached to the nozzle installation hole 93 of the filter 9. That is, an O-ring 81 is interposed between the rear end surface of the mesh housing portion 41 in the casing 4 of the clouding nozzle 3 and the outer periphery of the nozzle installation hole 93 of the filter 9, and a ring-shaped packing 82 is interposed between the rear surface of the inward flange 47 in the casing 4 and the outer periphery of the nozzle outlet 21 of the bubble generator 2. The protrusion 95 of the nozzle installation hole 93 is inserted into the anti-rotation groove 45 of the casing 4, and the mounting portion 42 of the casing 4 is fitted into the nozzle installation hole 93. As a result, the elastic hook 94 in the nozzle installation hole 93 snaps into elastic engagement with the outer periphery protrusion 44 of the casing 4, and the clouding nozzle 3 is attached to the nozzle installation hole 93 of the filter 9 with its rotational positioning determined.

In the hot water adapter of this embodiment configured as described above, when microbubble water is sprayed from the nozzle 21 of the bubble generator 2, the air bubbles are broken down and made finer each time the sprayed microbubble water passes through the three mesh sheets 61, so that the microbubble water becomes cloudy with countless fine air bubbles mixed together in a dispersed state. When the cloudy microbubble water passes through the straightening member 7, it is guided downward by each fin 71 of the straightening member 7, and then passes through the opening 52 of the perforated cap 5 and is released into the bathtub.

As described above, the hot water adapter of this embodiment can reliably release cloudy microbubble water, making the hot water in the bathtub cloudy with countless fine bubbles, and providing a sufficient hot bath effect with microbubble water.

Here, according to an experiment conducted by the inventor, in this embodiment, it is necessary to use a mesh sheet 61 of the clouding nozzle 3 with a mesh number of #60 to #100100. That is, if the mesh number is too small (if the mesh is too coarse), even if many mesh sheets 61 are stacked, the bubbles cannot be sufficiently refined, making clouding difficult, and the number of mesh sheets 61 installed for clouding may increase, which may lead to an increase in the size of the clouding mechanism (clouding nozzle), which is not preferable. Conversely, if the mesh number is too large (if the mesh is too fine), the flow resistance of the microbubble water increases, the supply amount of microbubble water into the bathtub decreases, and the air bubbles float up and disappear in a short time, making it difficult to obtain the clouding effect, and furthermore, clogging occurs frequently, which may deteriorate maintainability, which is not preferable. In this embodiment, it is even more preferable to use a mesh sheet 61 of #80 or more. In this case, the number of mesh sheets 61 installed can be reduced while maintaining a sufficient clouding effect, making the clouding mechanism smaller and more compact.

In addition, according to experiments by the inventors, in this embodiment, the number of mesh sheets 61 (mesh members 6) installed should be set to 2 to 4, preferably 3 or 4, and even more preferably 3. In other words, if the number of mesh sheets 61 installed is too small, the bubbles in the microbubble water may not be sufficiently broken down/fragmented, and the water may not be clouded reliably, which is not preferable. Conversely, if the number of mesh sheets 61 installed is too large, the clouding mechanism may become large, and the amount of microbubble water supplied to the bathtub may decrease, making it difficult to obtain the desired clouding effect, which is not preferable.

In addition, according to experiments by the inventors, in this embodiment, the spacing S1 (see FIG. 3) between adjacent mesh sheets 61 (mesh member 6) among the multiple mesh sheets 61 must be set to 2.0 mm to 3.0 mm, and is preferably set to 2.3 mm to 2.7 mm. In other words, if this spacing S1 is too narrow, the air bubbles in the microbubble water may not be sufficiently broken down/fragmented, and clouding may not be achieved reliably, which is undesirable. Conversely, if the spacing S1 is too wide, the clouding mechanism may become larger, which is undesirable.

In addition, according to experiments by the inventors, in this embodiment, the distance S2 (see FIG. 3) between the mesh sheet 61 located most upstream (rear end) among the multiple mesh sheets 61 and the nozzle 21 of the bubble generator 2 is preferably set to 2.5 mm to 4.0 mm, and more preferably to 3.0 mm to 3.5 mm. In other words, if this distance is too narrow or too wide, the bubbles in the microbubble water may not be sufficiently broken down/fragmented, and the water may not be clouded reliably, which is undesirable.

In contrast, in this embodiment, a straightening member 7 is installed downstream (discharge side) of the clouding nozzle 3 to guide the microbubble water released into the bathtub downwards, preventing air bubbles from rising inadvertently due to buoyancy, allowing the air bubbles to remain in the bathtub water for a long period of time, and ensuring sufficient clouding effect.

In this embodiment, the clouding nozzle 3 accommodates the mesh member 6 and the straightening member 7 in a loose fit state in the casing 4 of the filter 9 from its downstream opening, and then attaches the perforated cap 5 to the downstream opening in a detachable manner by screwing it. Therefore, when performing maintenance such as maintenance, inspection, and cleaning of the mesh member 6 and the straightening member 7, the filter 9 can be removed from the adapter body, and then the perforated cap 5 can be removed from the casing 4, so that the straightening member 7 and the mesh member 6 can be easily taken out from the downstream opening of the casing 4, and maintenance work for these members 6 and 7 can be easily performed. After the maintenance work is completed, the mesh member 6 and the straightening member 7 can be accommodated in the casing 4, the perforated cap 5 can be screwed in, and the filter 9 can be attached to the adapter body, and the hot water adapter can be assembled to its original state. In this way, the mesh member 6 and the straightening member 7 can be easily attached and detached, and their maintenance work can be performed efficiently and easily.

In this embodiment, if a single block-shaped porous body were housed inside the casing 4 instead of the multiple mesh members 6 as the opacifying member, the block-shaped porous body could be easily removed as described above, but the dirt and other debris trapped inside the porous body could not be easily removed, resulting in poor maintainability. In contrast, in this embodiment, multiple (3) mesh members 6 are housed as the opacifying member, so the multiple mesh members 6 that are removed can be cleaned individually, and almost all dirt and debris can be easily and reliably removed, ensuring excellent maintainability.

In addition, in the hot water supply adapter of this embodiment, a ring-shaped gasket 82 is installed at the upstream opening of the casing 4 of the clouding nozzle 3, and the gasket 82 is made to adhere to the outer periphery of the nozzle outlet of the bubble generator 2. This prevents the microbubble water from leaking out of the gap between the casing 4 of the clouding nozzle 3 and the nozzle generator 2 when microbubble water is generated, ensures sufficient water pressure for the microbubble water, and allows the microbubble water to be introduced into the clouding nozzle 3 with the desired force, making it possible to more reliably cloud the microbubble water.

In addition, in the clouding nozzle 3 of this embodiment, an inward protruding portion 46 is formed on the inner peripheral surface of the casing 4, and notches 66, 76 that fit the inward protruding portion 46 are formed on the outer peripheral surfaces of the mesh member 6 and the straightening member 7. Therefore, when the mesh member 6 and the straightening member 7 are housed in the casing 4, the mesh member 6 and the straightening member 7 can be circumferentially positioned and prevented from rotating by simply housing them in correspondence with the notches 66, 76 in correspondence with the inward protruding portion 46. This makes it easy to house the mesh member 6 and the straightening member 7 in the casing 4, and thus makes it easy to assemble the clouding nozzle 3, making maintenance work even more efficient and simple.

In the above embodiment, the clouding device of the present invention, which serves as a clouding nozzle, is provided on a hot water adapter for a bathtub. However, the present invention is not limited to this, and the clouding device of the present invention can also be applied to other water intake equipment such as shower heads and faucets.

The hot water adapter of this invention can be used, for example, as a hot water circulation fixture with a bubble generating function in the bathtub of an ordinary house.

1: Adapter body 2: Bubble generator 21: Spout 3: Nozzle for clouding (clouding device)
4: Casing 5: Perforated cap 6: Mesh member 61: Mesh sheet 62: Support ring 7: Flow straightening member 9: Filter 93: Nozzle installation hole S1: Spacing between mesh sheets S2: Spacing between upstream mesh sheet and bubble nozzle

Claims (7)

A hot water adapter that is installed in a bathtub and has an adapter body equipped with a bubble generator, and that allows microbubble water in which air bubbles are mixed into hot water to be sprayed from a nozzle of the bubble generator into the bathtub,
A device for making a white cloud is provided corresponding to the nozzle of the bubble generator,
The device for generating whitening is provided with a plurality of mesh sheets through which microbubble water passes in sequence, and the interval between adjacent mesh sheets is set to 2.0 mm to 3.0 mm;
The hot water adapter is characterized in that the mesh sheet has a mesh number of #60 to #100. 2. The hot water adapter according to claim 1 , wherein the mesh sheet arranged most upstream among the plurality of mesh sheets is arranged at a distance of 2.5 mm to 4.0 mm from the nozzle of the bubble generator. The hot water adaptor according to claim 1 or 2 , wherein the number of the mesh sheets installed is 2 to 4. The hot water adapter according to any one of claims 1 to 3, wherein a straightening member for guiding the microbubble water that has passed through the mesh sheets downward is provided in correspondence with the downstream side of the mesh sheet that is located most downstream among the plurality of mesh sheets. A filter is provided to cover a portion of the adapter body that corresponds to the inside of the bathtub, and a nozzle installation hole is provided in the filter in correspondence with the nozzle,
The opacification device is
A mesh member in which an outer peripheral edge portion of the mesh sheet is supported by a support ring;
a cylindrical casing in which the mesh members are housed via an opening at another end thereof as a downstream opening, and one end thereof as an upstream side is attached to the nozzle installation hole;
The hot water adapter according to any one of claims 1 to 3, further comprising a perforated cap that is removably attached to the downstream opening of the casing and that allows the passage of microbubble water while holding the mesh member within the casing. A filter is provided to cover a portion of the adapter body that corresponds to the inside of the bathtub, and a nozzle installation hole is provided in the filter in correspondence with the nozzle,
The opacification device is
A mesh member in which an outer peripheral edge portion of the mesh sheet is supported by a support ring;
a cylindrical casing in which the mesh members are housed via an opening at another end thereof as a downstream opening, and one end thereof as an upstream side is attached to the nozzle installation hole;
a perforated cap that is detachably attached to the downstream opening of the casing and that allows the passage of microbubble water while holding the mesh member within the casing;
The hot water adaptor according to claim 4 , wherein the flow straightening member is housed within the casing. A device for making water cloudy, which is provided in correspondence with a nozzle of a bubble generator that sprays microbubble water, in which air bubbles are mixed into hot water, from the nozzle,
It is equipped with multiple mesh sheets through which microbubble water passes in sequence,
The interval between adjacent mesh sheets is set to 2.0 mm to 3.0 mm,
The mesh sheet has a mesh number of #60 to #100.

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