JP7432116B2 - bathtub equipment - Google Patents

Description

The present invention relates to a bathtub device, and particularly to a bathtub device installed in a bathtub.

Conventionally, for example, as described in Patent Document 1, in order to remove dirt (e.g. hair, dirt, etc.) present in the bathtub water after bathing, the bathtub water is removed from the bathtub. A bath water purifying device is known that takes in bath water, removes dirt from the taken bath water, and returns it to the bathtub.

For example, as described in Patent Document 2, a device is provided so that the user floats on the surface of the bathtub after taking a bath, and the hair that floats on the surface of the bathtub water after the user takes a bath. Bath scale removers that remove dirt such as hot water scale are known.

Unexamined Japanese Patent Publication No. 2017-127500 JP2018-68416A

However, in the bath water purifying device as described in Patent Document 1, the water inlet and the water outlet of the bath water purifying device are provided in the bathtub, and the bath water is circulated from the water inlet to the water outlet. This will purify the dirt in the bathtub water. Therefore, such a bath water purifying device has a problem in that it is difficult to collect dirt floating on the water surface in the bathtub.

Further, a bath scale remover as described in Patent Document 2 is provided in a state where it floats on the hot water surface due to the buoyancy of the air chamber, and dirt floating on the hot water surface is collected and purified. Therefore, such a bathroom scale remover has a problem in that it is difficult to collect dirt in the bathtub water. Another problem was that the user of the bathtub had to place the bath scale remover in a state where it was floating on the water surface and then operate the bath scale remover, which was a time-consuming problem.

If a bathtub is equipped with both the bath water purifying device of Patent Document 1 and the bath scale remover of Patent Document 2, dirt on the water surface and in the water in the bathtub can be collected. However, there are problems in that arranging both devices in the bathtub is very costly and requires a lot of effort for installation and management.

In addition, in the bath water purifying device of Patent Document 1 and the bath scale removing device of Patent Document 2, when trying to increase the suction flow rate of bath water in order to improve the dirt collection efficiency, the bath water This creates a problem in that it becomes necessary to increase the size of the pump for sucking in the water, and it becomes difficult to secure space to accommodate the enlarged pump.

Therefore, the present invention has been made to solve the problems and problems of the prior art described above, and includes changing the pump to a larger one, and installing a device for collecting dirt in the water in the bathtub and a device for cleaning the water surface of the bathtub. To provide a bathtub device capable of collecting dirt in the water of a bathtub and on the water surface of the bathtub without separately providing a device for collecting dirt.

In order to achieve the above object, the present invention provides a bathtub device installed in a bathtub, which includes a pump that sucks bathtub water in the bathtub and supplies the bathtub water to the downstream side, and a suction port provided in the bathtub. a suction flow path extending from the suction port to the pump; a pump downstream flow path extending downstream from the pump; a first flow path branching from the pump downstream flow path; A second flow path branching from the downstream flow path and an underwater spout are formed in the bathtub, and the bathtub water supplied from the first flow path is spouted from the underwater spout into the water in the bathtub. an out-of-water spout, which includes a submersible spout and an out-of-water spout above the water surface of the bathtub, and causes bathtub water supplied from the second channel to be spouted from the out-of-water spout into the bathtub; and a dirt collecting part that is provided on the suction flow path and collects dirt in the bathtub water passing through, and the flow rate of the bathtub water spouted from the above-mentioned water surface water spouting part is controlled by the submersible water spouting part. It is characterized in that water is configured to be simultaneously spouted from the above-mentioned above-mentioned above-mentioned water surface water spouting part and the above-mentioned underwater water spouting part so that the flow velocity of the bathtub water is higher than the flow rate of water spouted from the above-mentioned submerged water spouting part.
According to an embodiment of the present invention configured in this way, the flow rate of the bathtub water spouted from the above-mentioned above-mentioned water surface water spouting section is larger than the flow speed of the bathtub water spouted from the above-mentioned submersible water spouting section, It is configured such that water is simultaneously spouted from the above-mentioned above-mentioned water surface water spouting section and the above-mentioned underwater water spouting section. As a result, the pump can be changed to a larger one to increase the circulation flow rate and the amount of dirt collected, and a device that collects dirt in the water in the bathtub and a device that collects dirt on the water surface of the bathtub can be used. Dirt in the water in the bathtub and on the water surface of the bathtub can be collected without the need to install separate devices. Further, according to the above-described configuration, dirt floating on the water surface that is difficult to be drawn into the water can be easily pushed into the water by the relatively high-speed water flow discharged from the water discharge section outside the water surface. Furthermore, the dirt in the water in the bathtub is agitated by the relatively low-speed water flow discharged from the submersible water spout, and it is possible to suppress the accumulation of dirt in the water. This makes it difficult to inhibit the formation of a flow sucked into the suction channel from the suction port. Therefore, it is possible to push the dirt floating on the water surface into the water, suppress the stagnation of dirt in the water, and realize efficient suction into the suction channel. can improve the efficiency of collecting dirt on the water surface.

In the present invention, preferably, the flow path resistance of the first flow path is configured to be larger than the flow path resistance of the second flow path, and at least one of the above-mentioned out-of-water discharge portions The value obtained by dividing the water spout flow rate Q1 at the water spout by the water spout cross-sectional area S1 is larger than the value obtained by dividing the water spout flow rate Q2 at at least one submersible water spout of the submersible water spout by the water spout cross-sectional area S2.
According to an embodiment of the present invention configured in this way, the flow path resistance of the first flow path is configured to be larger than the flow path resistance of the second flow path, and The value obtained by dividing the water discharge flow rate Q1 at the at least one above-mentioned above-mentioned out-of-water spout of the part by the cross-sectional area S1 of this spout is the water discharge flow rate Q2 at least one of the above-mentioned submersible spouts of the underwater water spout section divided by the cross-sectional area S2 of this spout. greater than the value divided by. As a result, the flow rate of bathtub water spouted from at least one out-of-water spout of the above-mentioned out-of-water spout section is made larger than the flow speed of bathtub water spouted from at least one submersible spout of the above-mentioned submersible spout section. Furthermore, water can be spouted simultaneously from the above water surface water spouting section and the above underwater water spouting section. Therefore, the dirt floating on the water surface can be pushed into the water, and the stagnation of dirt in the water can be suppressed.Furthermore, efficient suction into the suction channel can be realized, and the dirt in the bathtub water can be removed by the dirt collection part in the suction channel. The collection efficiency can be increased. In addition, not only when there is one out-of-water spout and one submersible spout, but also when there are multiple out-of-water spouts and/or submersible spouts, at least one out-of-the-water spout of the above-mentioned out-of-water spout is from the above-mentioned out-of-water water spouting section and the above-mentioned submersible spouting section such that the flow rate of bathtub water spouted from the spout is greater than the flow speed of bathtub water spouted from at least one submersible spout of the underwater spouting section. Water can be spouted at the same time. Therefore, even when there are multiple out-of-water spouts and/or underwater spouts, it is possible to relatively easily push dirt floating on the water surface into the water, suppress stagnation of dirt in the water, and further reduce the suction flow. Efficient suction into the bathtub water can be realized, and the efficiency of collecting dirt in the bathtub water by the dirt collecting section in the suction channel can be increased.

In the present invention, preferably, the first flow path includes a constriction part that narrows the cross section of the flow path upstream of the underwater spout.
According to one embodiment of the present invention configured in this way, the first flow path includes a constriction section that narrows the cross section of the flow path in the flow path upstream of the underwater spout. Thereby, the flow rate of the bathtub water from the first flow path to the submersible spout can be throttled by the throttle part of the first flow path, and the flow rate of the bathtub water spouted from the submersible spout can be reduced. In addition, the simple configuration in which the first flow path includes a constriction part allows the flow resistance of the first flow path to be larger than the flow path resistance of the second flow path, and the bathtub from the first flow path to the submersible spout can be improved. The flow rate of the water is made smaller than the flow rate of the bathtub water from the second channel to the out-of-water spout, so that the flow rate of the bathtub water spouted from the out-of-water spout is the same as the flow rate of the bath water spouted from the submersible spout. It is relatively easy to realize a relationship that is larger than .

The present invention preferably further includes a branching device provided to branch the first flow path and the second flow path from the downstream flow path of the pump, and the branching device includes a branching device configured to branch the first flow path and the second flow path from the downstream flow path of the pump. Adjust the opening area opening to the second flow path side and/or the opening area opening to the first flow path side so that the opening area opening to the second flow path side is larger than the opening area opening to the first flow path side. and an adjustment member control section that controls the adjustment member.
According to an embodiment of the present invention configured in this manner, the branching device uses the adjustment member to adjust the opening area of the branch portion opening toward the second flow path side to be larger than the opening area opening toward the first flow path side. You can make it bigger. As a result, the flow rate of the bathtub water from the second flow path to the out-of-water spout is made larger than the flow rate of the bathtub water from the first flow path to the submersible spout, and the flow rate of the bathtub water discharged from the out-of-water spout is increased. However, it is possible to relatively easily realize a relationship in which the flow velocity is greater than the flow velocity of the bathtub water spouted from the submersible water spouting section. In addition, by providing the branching device with a controllable adjustment member, the above relationship can be achieved relatively easily, and without adding any other devices or improving other configurations, for example, It is also possible to realize a water spouting pattern in which only water is spouted from the submerged water spouting part, a water spouting pattern in which only water is spouted from the submersible water spouting part, etc.

Preferably, the present invention further includes a flow rate control section that controls at least a flow rate of water discharged from the submersible water discharge section, and the flow rate control section is configured to control the flow rate of the bathtub water sucked from the suction port to be constant. While the pump is in operation, control is performed to reduce the flow rate of water discharged from the underwater water discharge section for a predetermined period of time.
According to an embodiment of the present invention configured in this way, the flow rate control unit controls the amount of water spouted from the submersible water spouting portion over a predetermined period while the flow rate of the bathtub water sucked from the suction port is constant. Performs control to lower the flow rate. As a result, while the flow rate of bath water sucked in from the suction port is constant, the flow rate of water discharged from the above-mentioned underwater water spouting section is reduced over a predetermined period, and the flow rate of water spouted from the above-mentioned water spouting section is increased during this predetermined period. , increase the flow rate of bathtub water discharged from the water outlet outside the water surface. Therefore, the effect of pushing dirt floating on the water surface into the water by the water spouted from the water spouting section outside the water surface can be further strengthened.

In the present invention, preferably, the adjusting member of the branching device is configured to control the submersible water spout for a predetermined period while the pump is operating so that the flow rate of the bathtub water sucked from the suction port is constant. Control is performed to reduce the flow rate of water discharged from the system.
According to an embodiment of the present invention configured in this way, the adjusting member of the branching device adjusts the submersible water spouting section for a predetermined period while the flow rate of bathtub water sucked from the suction port is constant. Control is performed to reduce the flow rate of water discharged from the system. As a result, while the flow rate of bath water sucked in from the suction port is constant, the flow rate of water discharged from the above-mentioned underwater water spouting section is reduced over a predetermined period, and the flow rate of water spouted from the above-mentioned water spouting section is increased during this predetermined period. , increase the flow rate of bathtub water discharged from the water outlet outside the water surface. Therefore, the effect of pushing dirt floating on the water surface into the water by the water spouted from the water spouting section outside the water surface can be further strengthened.

Preferably, the present invention is configured such that the landing position of the bathtub water discharged from the above-mentioned water surface outside the water surface on the water surface in the bathtub is changed.
According to an embodiment of the present invention configured in this manner, the position where the bathtub water discharged from the above-mentioned out-of-water surface water-discharging section lands on the water surface in the bathtub is changed. As a result, the landing position of the bathtub water discharged from the water-discharging section outside the water surface on the water surface in the bathtub can be changed over a wider area than the water landing area that does not change when the water landing position does not change. Therefore, dirt floating on the water surface can be pushed into the water over a wider area by the water discharged from the water discharge section outside the water surface.

Preferably, in the present invention, when viewed from above, the bathtub is defined with a first region and a second region which are bisected in the longitudinal direction, and the submersible water spout is provided in the first region. In this case, the suction port is provided in the second region, and when the submersible water discharge portion is provided in the second region, the suction port is provided in the first region.
According to an embodiment of the present invention configured in this way, when the underwater water spouting section is provided in the first region, the suction port is provided in the second region, and the underwater water spouting section is provided in the second region. When provided in two regions, the suction port is provided in the first region. Thereby, the submersible water spouting part and the suction port are arranged apart from each other in a first region of which the bathtub is divided into two in the longitudinal direction and a second region on the opposite side of the first region. Therefore, the water flow caused by water spouting from the submersible water spouting part can be made less likely to obstruct the suction of bathtub water from the suction port.

Preferably, the present invention further includes a jet pump unit provided on the second flow path, and the jet pump unit includes a jet pump water storage section in which bath water drawn by the jet pump action is stored; a jet pump channel that connects the bathtub and the jet pump water storage section and forms a channel that can introduce bathtub water into the jet pump water storage section; and a jet pump flow path that connects the bathtub and the jet pump water storage section; an injection section that has an opening area smaller than the cross-sectional area of the flow channel and that accelerates the supplied bathtub water and injects it into the jet pump water storage section, and the second flow channel is configured to The opening area of the second flow path extending downstream of the pump water storage section is formed to be larger than the opening area of the injection section, and the dirt collecting section is arranged on the suction flow path or on the jet pump flow path. installed on the street.
According to an embodiment of the present invention configured in this manner, the flow rate of the bathtub water spouted from the out-of-water water spouting section is increased by the jet pumping action of the jet pump unit. The flow rate of the bathtub water spouted from the out-of-water water spouting section is made larger than the flow rate of the bathtub water spouted from the submersible water spouting section. In addition, the jet pump unit can increase the flow rate of bathtub water spouted from the outside water spout, so even if the pump is made smaller, the flow rate of bath water spouted from the outside water spout can be increased. , can be made larger than the flow rate of bath water spouted from the submersible water spouting section. This makes it possible to further downsize the pump, increasing the degree of freedom in arranging the pump between the bathtub and the wall or casing, and reducing the size of the area that should be secured as the space for the pump.

According to the bathtub device of the present invention, dirt in the water in the bathtub and on the water surface of the bathtub can be collected.

1 is a perspective view schematically showing the structure of a bathtub device according to a first embodiment of the present invention. 1 is a side view schematically showing the structure of a bathtub device according to a first embodiment of the present invention. 1 is a plan view schematically showing the structure of a bathtub device according to a first embodiment of the present invention. 1 is a diagram schematically showing the structure of a branching device of a bathtub device according to a first embodiment of the present invention. FIG. 2 is a perspective view schematically showing an out-of-water outlet of an out-of-water outlet of the bathtub device according to the first embodiment of the present invention. 1 is a perspective view schematically showing a submersible water spout of a submersible water spout of a bathtub device according to a first embodiment of the present invention; FIG. FIG. 7 is a time chart showing the operation of the flow rate, flow velocity, and opening degree of the channel in the branching device when the control device of the bathtub device according to the first embodiment of the present invention executes the water discharge flow rate change mode. FIG. FIG. 7 is a time chart showing the operation of the flow rate, the flow velocity, and the opening degree of the flow path in the branching device when the control device of the bathtub device according to the first embodiment of the present invention is executing the water discharge flow rate change mode of the first modification. be. FIG. 11 is a time chart showing the operation of the flow rate, flow velocity, and the opening degree of the flow path in the branching device when the control device of the bathtub device according to the first embodiment of the present invention is executing the water discharge flow rate change mode of the second modification. be. FIG. 3 is a diagram illustrating how the landing position of bathtub water discharged from the water surface outside the water surface on the water surface in the bathtub is changed in the bathtub device of FIG. 2 . FIG. 2 is a side view schematically showing the structure of a bathtub device according to a second embodiment of the present invention. It is a time chart which shows the operation|movement of flow volume, flow velocity, and the opening degree of the flow path in a branching device when the control apparatus of the bathtub apparatus by 2nd Embodiment of this invention is performing the water discharge flow rate change mode. A time chart showing the operation of the flow rate, flow velocity, and opening degree of the flow path in the branching device when the control device of the bathtub device according to the second embodiment of the present invention is executing the water discharge flow rate change mode of the first modification. be. FIG. 7 is a time chart showing the operation of the flow rate, flow velocity, and the opening degree of the flow path in the branching device when the control device of the bathtub device according to the second embodiment of the present invention is executing the water discharge flow rate change mode of the second modification. be. It is a top view which shows the modification of the bathtub to which the bathtub device of 1st Embodiment and/or 2nd Embodiment of this invention is applied.

Hereinafter, a bathtub device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view schematically showing the structure of a bathtub device according to the first embodiment of the present invention, and FIG. 2 is a side view schematically showing the structure of the bathtub device according to the first embodiment of the present invention. FIG. 3 is a plan view schematically showing the structure of the bathtub device according to the first embodiment of the present invention.

As shown in FIGS. 1 to 3, a bathtub device 1 according to a first embodiment of the present invention is a bathtub device installed in a bathhouse, bathroom, bathroom, etc. of facilities, homes, etc.
A bathtub device 1 according to a first embodiment of the present invention is a bathtub device provided in a bathtub 2 that stores bathtub water. Note that the bathtub device 1 may include a bathtub 2 that stores bathtub water. Here, "bathtub water" is hot water or water stored in the bathtub 2. The bathtub water is set to a bathing temperature, such as 40 degrees. The water supply device of the bathtub device 1 supplies the bathtub 2 with hot water or water whose temperature has been adjusted to a temperature set by the user on the operation unit 26 as bathtub water. Temperature-controlled hot water or water at an external facility may be supplied to the bathtub by a water supply device. Note that hot water or water may be supplied to the bathtub 2 by a water supply device or an external facility without temperature adjustment, and the temperature may be adjusted by the user.

A bathtub device 1 according to a first embodiment of the present invention includes a pump 4 that sucks bathtub water in a bathtub 2 and supplies this bathtub water to the downstream side, and a suction passage 6. a suction passage 6 extending from the suction opening 8 to the pump 4; a pump downstream passage 10 extending downstream from the pump 4; and a downstream passage 10 branching from the pump downstream passage 10. 1 flow path 12, a second flow path 14 branched from the pump downstream flow path 10, and a dirt collection section that is provided on the suction flow path 6 and that collects dirt in the bathtub water passing through. A collecting section 16 is provided.

In the present embodiment, the bathtub 2 is a rectangular bathtub 2 of a relatively small size such that an adult user (bather) takes a bath alone. In addition to the shape, the bathtub may be a relatively large size bathtub that can be used by multiple people at a bathing facility or nursing care facility, and may also have a polygonal shape, a round shape, a bowed moon shape, or a curved shape. It may have other shapes such as. Moreover, the bathtub 2 can be used not only as a bathtub for a normal bath, but also as a bathtub for a half-body bath, and a bathtub used for medical purposes such as massage. If the bathtub 2 is, for example, a standard bathtub used in a home unit bath or the like in which an adult user (bather) takes a bath alone, the user's back and head will be close to the short side. Assuming that the user takes a bath while sitting in this manner, a water spouting section, etc., which will be described later, is arranged on the short side. The user takes a bath while sitting so that the user's body and legs extend along the long sides extending in the longitudinal direction of the bathtub 2. Depending on the size of the user's body, the bathtub 2 can be used, for example, while the user is sitting, sitting with the upper body tilted to the back, lying down with the upper body tilted to the back, or This is a bathtub that allows you to take a bath while lying down on your back with your upper body largely tilted towards your back.

The bathtub 2 has a bottom portion 2a that is in contact with the buttocks or feet of a user who is taking a bath, and a vertical wall 2b that is formed to rise vertically from the bottom portion 2a and that is often in contact with the back of the user who is taking a bath. , and an upper end portion 2c that is connected to the upper portion of the vertical wall 2b and forms the upper surface of the bathtub 2. The upper end portion 2c is formed at a height relatively close to the upper body of the bathing user (bathing person), such as the head, neck, or shoulders. For example, the upper end 2c is set at a height such that a user who is taking a bath can sit with his buttocks on the bottom 2a and rest the back of his head on the upper end 2c in a relaxed state. It is formed in the same position. The upper end portion 2c may be formed as a substantially flat surface, or may be formed as a curved surface so as to easily match the curved shape of the head or neck.

As shown in FIG. 3, when viewed from above, the bathtub 2 is divided into two halves in the longitudinal direction, thereby defining a first area A1 and a second area A2. The first area A1 is an area of the bathtub 2 on one side with respect to a center line B that bisects the bathtub 2 in the longitudinal direction (an area on the left side of the paper in FIG. 3). The second area A2 is the area of the bathtub 2 on the other side with respect to the center line B that bisects the bathtub 2 in the longitudinal direction (the area on the right side of the paper in FIG. 3). In the bathtub 2, an underwater water spouting section 18 and an out-of-water water spouting section 22, which will be described later, are provided in a second region A2, and a suction port 8 is provided in a first region A1 on the opposite side to the center line B. In addition, when the underwater water spouting part 18 is provided in the first area A1, the suction port 8 is provided in the second area A2 on the opposite side to the center line B.

The bathtub 2 has a water supply system that can supply a predetermined amount or an arbitrary amount of temperature-controlled or non-temperature-controlled bathwater water into the bathtub 2 based on the user's operation of the operation unit 26 or the like. A device (not shown) is provided.

A casing 21 is attached to the outside of the bathtub 2. By attaching the casing 21 to the bathtub 2, the bathtub 2 and the bathtub device 1 are arranged integrally in the bathroom as seen from the user, and the casing prevents the piping and equipment of the bathtub device 1 from being exposed to the user. It is stored in 21. Therefore, it is possible to protect internal electrical components and the like (protection such as preventing water from splashing) while maintaining the aesthetic appearance of the bathtub device 1 as a whole. The pump 4, the suction flow path 6, the pump downstream flow path 10, the first flow path 12, and the second flow path 14 are located in a very limited space between the casing 21 (or the bathroom wall W) and the bathtub 2. It is located in

The pump 4 can suck the bathtub water in the bathtub 2 and supply this bathtub water to the downstream side. The pump 4 is a pump that has the function of applying pressure to the sucked bathtub water and pumping it. The pump 4 sucks bathtub water from the bathtub 2 and pumps the bathwater to the downstream side as an impeller (not shown) is directly connected to an electrically driven electric motor (not shown). . The pump 4 is arranged near the lateral end of the bathtub 2 on the side where the out-of-water water spouting section 22 is arranged, outside the center in the left-right direction of the bathtub 2 . The pump 4 is provided at the bottom of the bathtub 2 and inside the casing 21 (or inside the wall surface W). In the space between the casing 21 (or wall surface W) and the bathtub 2, the pump 4, each flow path, etc. are arranged in a relatively narrow space, so the installation position and size of the pump 4 ( There are many restrictions regarding pump size), making it difficult to easily increase the size of the pump 4. For example, the pump 4 is configured to supply bathtub water at a flow rate of 100 L/min to 150 L/min to the downstream side.

The suction channel 6 is arranged on the outer side of the bathtub 2. The suction channel 6 extends a relatively short distance from the suction port 8 in the lateral direction of the bathtub 2, and then bends toward the longitudinal direction of the bathtub 2 and extends in the longitudinal direction. It extends beyond B. The suction channel 6 is formed by a circular pipe.

The pump downstream flow path 10 extends from the pump 4 to a branch point between the first flow path 12 and the second flow path 14 . The pump downstream flow path 10 is formed by a circular pipe.

The first channel 12 extends from the branching part with the second channel 14 to the submersible water spouting section 18, and further branches into two channels midway so as to communicate with the two submersible water discharging sections 18. The first flow path 12 is formed by a circular pipe. The flow path resistance of the first flow path 12 is configured to be greater than the flow path resistance of the second flow path 14.

The second flow path 14 extends from the branched portion with the first flow path 12 to the off-the-water surface water discharge section 22 . The second flow path 14 is formed by a circular pipe.

As shown in FIG. 2, the collection section 16 is provided on the suction channel 6. Therefore, the collection section 16 is disposed near the first half of the straight portion extending along the longitudinal direction of the bathtub 2 after the suction channel 6 is bent from the suction port 8 . The collection unit 16 may be attached to the suction port 8 on the suction channel 6 to facilitate maintenance. The collecting section 16 is formed of a net-like member and is capable of collecting dirt in the bathtub water, such as hair and body grime. Therefore, the collection unit 16 can collect dirt from the bathtub water passing through the suction channel 6.

The bathtub device 1 further includes a submersible spout section 18 that forms a submersible spout 20 in the bathtub 2 and directs the bathtub water supplied from the first channel 12 from the submersible spout 20 into the bathtub. A submersible water spout section 18 and an out-of-water water outflow section 22 are configured to spout water into the water in the bathtub. It includes an off-the-surface water spout section 22 for discharging bathtub water supplied from the channel 14 into the bathtub 2 from an off-the-water spout 24, a control device 40 for controlling the pump 4, and an operating section 26.

The submersible water spouting section 18 forms a blowing water spouting section that blows the bathtub water supplied from the pump 4 into the bathtub 2 from near the vertical center of the bathtub 2, as shown by arrow F1 in FIG. The underwater water spouting section 18 is provided at a height position near the vertical center of the vertical wall 2b of the bathtub 2. In the present embodiment, two submersible water spouts 18 are provided on the vertical wall 2b of the bathtub 2 on the side of the out-of-water water spout 22. Note that the number of submersible water spouts 18 is not limited to two, but may be one, or may be three or more. For example, the two submersible water spouts 18 are arranged side by side in the lateral direction of the bathtub 2 (in the left-right direction toward the vertical wall 2b).

The submersible water spouting section 18 is installed horizontally (for example, horizontally, almost horizontally) on the vertical wall 2b of the bathtub 2, and generates an agitation flow that stirs the bathtub water in the bathtub 2 from the submersible water spouting section 18 into the water in the bathtub 2. It is designed to spout water in a way that creates formations. For example, the underwater water spouting section 18 is configured to spout water sideways from the underwater water spouting section 18 . The underwater water spouting section 18 forms a flow directed in the longitudinal direction of the bathtub 2, for example, by a flow direction component directed from the vertical wall 2b in the longitudinal direction of the bathtub 2. For example, the submersible water spouting section 18 may discharge bathtub water diagonally upward, diagonally downward, leftward, rightward, etc. from the submersible water discharging section 18 into the water in the bathtub 2 . Further, the submersible water spouting section 18 may be configured, for example, to change the direction in which water is discharged from the bathtub. For example, when discharging bath water substantially parallel to the bottom 2a, the submersible water discharging section 18 forms a water flow substantially parallel to the bottom 2a. The underwater water spouting section 18 is arranged at a height position near the vertical center of the vertical wall 2b of the bathtub 2, that is, at a height corresponding to the waist or back of a typical user. The blow water sprayed toward the user collides with the user's waist and back, thereby pressing the user's waist and back and producing a massage effect. The submersible water spouting section 18 is capable of blowing water when the control device 40 determines that the submersible water spouting section 18 is under the water surface of the bathtub 2, and serves as a submersible water spouting section that spouts water underwater. It is configured.

Moreover, since the submersible water spouting part 18 forms a water flow in the water that is substantially parallel to the bottom part 2a, it is possible to form a flow that agitates the bathtub water in the longitudinal direction when the user is not taking a bath. Note that the submersible water spouting section 18 can form a flow that agitates the bathtub water in the longitudinal direction to a certain extent even when the user is taking a bath. Therefore, the bath water in the bathtub 2 can be agitated as a whole, and it is possible to suppress the accumulation of dirt in the water. In this way, the submersible water spouting section 18 functions as an submersible agitation function section that agitates the entire water in the water below the water surface.

The out-of-water water spouting section 22 constitutes a water spouting section that spouts the bathtub water supplied from the pump 4 into the bathtub 2 from near the upper end of the bathtub 2, as shown by arrow F2 in FIG. The out-of-water water spouting section 22 is arranged near the upper end 2c of the bathtub 2. The out-of-water water spouting section 22 is arranged above the underwater water spouting section 18 . The out-of-water water discharge section 22 is arranged at a position above the vertical center portion of the vertical wall 2b, for example, on the upper end portion 2c. The out-of-water water spouting section 22 is arranged above the upper end 2c of the portion of the bathtub 2 that forms the overflowing surface. The out-of-water spouting section 22 is connected to a water surface at a predetermined water level of the bathtub water stored in the bathtub 2, for example, a water surface at a preset bathing water supply water level WL0 (see FIG. 2) in normal usage conditions, or a bathtub. It is located above the water surface of the physical full water level WL1 of No. 2. Therefore, the out-of-water water spouting section 22 forms an aerial water spouting section that spews bathtub water into the air (into the atmosphere). The out-of-water spouting section 22 spews bathtub water from a position above the water surface of the normal water supply water level WL0 in the bathtub 2 toward a space near the shoulders of a user who is sitting and taking a bath. Water is spouted into the bathtub 2 from near the upper end 2c of the bathtub 2. In addition, when the user is not taking a bath in the bathtub 2, the out-of-water water spouting section 22 spews bathtub water from a position above the water surface of the water supply water level WL0, and creates a water flow that appears to submerge into the water from the water surface. Let it form. Further, the off-the-water water spouting section 22 is arranged within a range of 300 mm upward from the height position of the upper end 2c of the bathtub 2 and within 300 mm downward from the height position. The out-of-water water spouting section 22 may be arranged at the height of a headrest provided at the upper end 2c of the bathtub 2 or within a range of 300 mm upward and 300 mm downward from the height position of the headrest. .

As shown in FIG. 1, the out-of-water water spouting section 22 forms an out-of-water water outflow port 24 that is relatively long and wide in the lateral direction. The out-of-water spout section 22 extends from the out-of-water spout 24 in the left-right direction (horizontal direction with respect to the height direction) from the center of the bathtub 2 toward the front side (inside the bathtub 2) like a waterfall. Discharge bath water. The out-of-water spout 24 opens horizontally in the longitudinal direction of the bathtub 2 and is substantially parallel to the bottom 2a. Specifically, the out-of-water spout 24 is configured to be outside the water surface relative to the height in the vertical direction (the up-down direction when the out-of-water spout 24 is viewed from the front) of the out-of-water spout 24 of the out-of-water water spouting section 22. The spout 24 is formed to have a longer length in the left-right direction (left-right direction when the out-of-water spout is viewed from the front). The length of the out-of-water spout 24 in the left-right direction is approximately equal to the average shoulder width of an adult. For example, the length of the out-of-water spout 24 in the left-right direction is one half of the length of the short side 2e of the bathtub 2, or two-thirds of the length of the short side 2e of the bathtub 2 (see FIG. 1). It may be formed to have the same length. Further, for example, the length of the out-of-water water outlet 24 in the left-right direction can be formed in a range of 300 mm to 500 mm. As shown in FIG. 2, the bathtub water spouted sideways from the out-of-water spout 24 flows downward in a parabola in the air as a stable belt-like (water film-like) stream of almost constant width and thickness. Flow down.

In the off-water surface water spouting section 22, a bottom surface 22a of the flow path within the water spouting section connected to the off-water surface water spouting port 24 is formed to be substantially flat. A developing portion 15 is formed in a horizontally facing portion of the second flow path 14 on the back side of the out-of-water water discharging portion 22 . The expanding portion 15 is formed so that a horizontally extending flow path is widened in the left-right direction toward the downstream side.

When a user sitting in a bathtub 2 assumes a sitting posture with his or her back against a vertical wall 2b, the bathtub water spouted from an out-of-water water spouting part 22 hits the neck and shoulders. The bathtub water spouted from the out-of-water water spouting part 22 flows so as to spread from the shoulders to the user's front side (chest side), and/or so as to spread from the shoulders to the user's back side (back side). Therefore, the bath water can warm not only the neck and shoulders, but also the chest, abdomen, back, waist, etc. For example, as described above, a water spouting state in which a portion of the bath water spouted from the out-of-water water spouting section 22 is spouted toward the user's shoulders is defined as a shoulder bath water spouting state.
When the user is not taking a bath in the bathtub 2, the bathtub water spouted from the out-of-water spout 22 flows from the out-of-water spout 24 to the water surface of the water supply level WL0. Forms a flow that appears to fall down to a height of up to 100 ft and dive into the water. Therefore, the bathtub water spouted from the water spouting part 22 outside the water surface forms a downward agitating flow that pushes dirt and the like floating on the water surface into the water. In this way, the off-the-water water discharging unit 22 functions as a water surface agitation function unit that agitates water from the water surface into the water in the vertical direction. Note that even when the user is taking a bath in the bathtub 2, the bathtub water spouted from the outside water spouting section 22 is agitated downward to a certain extent to push dirt, etc. floating on the water surface into the water. It is possible to form a flow of

The bathtub device 1 includes an out-of-water water spouting section 22 and a submersible water spouting section 18 such that the flow rate of bathtub water spouted from the out-of-water water spouting section 22 is greater than the flow speed of bathtub water spouting from the submersible water spouting section 18 . It is configured so that water is spouted from both at the same time. In order to realize such a relationship, as will be described later, the flow rate per unit time of the bathtub water supplied to the second flow path 14 is higher than the flow rate per unit time of the bathtub water supplied to the first flow path 12. and/or the shape of the spout of the out-of-water spouting section 22 or the submersible spouting section 18 (spout cross-sectional area (spout opening area) S1 and spout cross-sectional area (spout opening area) S2 ) may be determined. In order to realize such a relationship, for example, the flow path resistance of the first flow path 12 is configured to be larger than the flow path resistance of the second flow path 14, and the The flow rate Q1 is made larger than the water spouting flow rate Q2 from the submersible water spouting section 18. As shown in FIG. 5, in order to realize such a relationship, for example, the water discharge flow rate Q1 at at least one out-of-water outlet 24 of the out-of-water outlet section 22 is divided by the cross-sectional area S1 of this outlet. The value of the water flow rate V1 from a certain out-of-water water spout 22 is the value obtained by dividing the water flow rate Q2 at at least one submersible spout 20 of the submersible water spout 18 by the cross-sectional area S2 of the water spout 20. It is larger than the water discharge flow rate V2. The flow velocity V1 of the water discharged from the water discharge section 22 outside the water surface is, for example, in the range of 1 m/s to 10 m/s. The water discharge flow rate V2 from the underwater spout 20 is set, for example, to a value smaller than the water discharge flow rate V1. The cross-sectional area S1 of the spout is, for example, in the range of 500 mm ² to 2500 mm ² .

The control device 40 is electrically connected to the operating section 26 operated by the user. Further, the control device 40 is electrically connected to the pump 4, the branching device 30, etc., and can mutually transmit and receive electrical signals, so that each of the above-mentioned parts can be electrically operated. The control device 40 is attached to a wall W in the bathroom. The control device 40 can also be provided on a wall or the like outside the bathroom. The control device 40 may be located at a location physically separated from the bathroom via the Internet, or may be formed by placing a predetermined program on a storage device such as a server via the Internet. You can. Furthermore, at least some of the functions of the control device 40 may be realized by a cloud (cloud computing) or the like. The control device 40 incorporates or uses an arithmetic device such as a CPU and a storage device such as a memory, and can control electrically connected devices based on a predetermined control program or the like. For example, the control device 40 selects at least one of a simultaneous water spouting mode, a water spouting flow rate change mode, a water spouting flow rate changing mode of a first modification, a water spouting flow rate changing mode of a second modification, an underwater water spouting mode, and an out-of-water water spouting mode. A control program that can be executed is stored in a storage device.

The control device 40 operates in a simultaneous water spouting mode in which water is spouted from the submersible water spouting section 18 and the out-of-water water spouting section 22 at the same time, a water spouting flow rate change mode in which the water spouting flow rate is changed, a water spouting flow rate changing mode of the first modification, and a second water spouting rate change mode. It has a water spouting flow rate change mode of a modified example, an underwater water spouting mode, and a water spouting mode outside the water surface.

The operation unit 26 is an operation unit such as an operation panel that allows the user to perform desired operations, and is attached to a wall W in the bathroom. Information about the user's operation of the operating section 26 is sent to the control device 40 by an electrical signal. The operation unit 26 can also be provided on a wall outside the bathroom.

The first flow path 12 includes a constriction section 28 that narrows the cross section of the flow path on the upstream side of the underwater water spout 20 . The constricted portion 28 is formed by a flow path that is smaller in diameter than the pipe diameter of the first flow path 12 . The throttle section 28 makes the flow path resistance of the first flow path 12 larger than the flow path resistance of the second flow path 14, and the flow rate of the bathtub water from the first flow path 12 to the submersible spout 20 is throttled. Therefore, the flow rate of the bathtub water passing through the submersible spout 20 is reduced, and the flow rate of the bathtub water spouted from the submersible spout 20 is reduced.

As shown in FIGS. 1, 2, and 4, the bathtub device 1 further includes a branching device 30 provided to branch the first flow path 12 and the second flow path 14 from the pump downstream flow path 10. We are prepared. The branching device 30 has an opening area opened to the second flow path 14 side and/or an opening area opened to the second flow path 14 side such that the opening area opened to the second flow path 14 side is larger than the opening area opened to the first flow path 12 side at the branch portion. Alternatively, it includes an adjustment member 32 that adjusts the opening area opening to the first flow path 12 side, and an adjustment member control section 34 that controls the adjustment member 32.

The branching device 30 is provided at a branch portion between the pump downstream flow path 10, the first flow path 12, and the second flow path 14, and forms a branched flow path. The adjustment member 32 is provided on the flow path 30a of the branching device 30 that branches to the first flow path 12 side. The adjustment member 32 is not limited to the vicinity of the branch portion, but may be provided at other positions on the first flow path 12. The adjustment member 32 forms a plate-shaped valve body and is formed to be movable inward or outward of the flow path 30a relative to the flow path 30a. The adjustment member 32 reduces the opening area on the first flow path 12 side by moving inward of the flow path 30a, and decreases the opening area on the first flow path 12 side by moving outward of the flow path 30a. It is formed to increase the opening area. The adjustment member 32 is formed to adjust the ratio of the opening area open to the first flow path 12 side and the opening area opened to the second flow path 14 side. The adjustment member 32 may be formed of another type of valve body that can change the opening degree of the flow path. Note that, if the adjustment member 32 has a structure that allows adjustment of the opening area opening to the second flow path 14 side and/or the opening area opening to the first flow path 12 side, then It may be provided on the flow path on the second flow path 14 side, or in a branched portion of the flow path (a portion between the flow path 30a on the first flow path 12 side and the flow path on the second flow path 14 side). may be provided. In this way, the adjustment member 32 allows the opening area of the channel opening to the second channel 14 side in the branching device 30 to be larger than the channel opening area opening to the first channel 12 side, and the second channel The flow rate per unit time of the bathtub water supplied to the first channel 14 is made larger than the flow rate per unit time of the bathtub water supplied to the first flow path 12 . That is, the control device 40 controls the adjustment member 32 to cause water to be spouted from the out-of-water spouting port 24 at a water spouting flow rate Q1, and to spout water from the submersible water spouting section 18 at a water spouting flow rate Q2. In this way, the bathtub device 1 is configured such that the flow rate V1 of the bathtub water spouted from the water spouting part 22 is higher than the flow rate V2 of the bathtub water spouted from the submersible water spouting part 18. 22 and the submersible water spouting section 18 at the same time.

The adjustment member 32 of the branching device 30 may be configured to selectively open and close both or any one of the first flow path 12 and the second flow path 14. Therefore, the branching device 30 can selectively supply bath water supplied from the pump downstream flow path 10 to either or both of the first flow path 12 and the second flow path 14 . When the first flow path 12 and the second flow path 14 are opened at the same time, the adjustment member 32 can freely change the distribution ratio of the flow rate.

The adjustment member control section 34 is electrically connected to the adjustment member 32. The adjustment member control unit 34 can control the adjustment member 32 to move inward or outward of the flow path 30a. The adjustment member control section 34 is electrically connected to the control device 40. Therefore, the adjustment member control section 34 is controlled by commands from the control device 40, and can electrically open/close the adjustment member 32 or control the degree of opening. The adjustment member control unit 34 may be provided as a functional unit of the control device 40 and may be configured by the control device 40.

Next, the simultaneous water discharging mode by the bathtub device 1 according to this embodiment will be explained with reference to FIGS. 2 and 3.
Before the bathtub device 1 starts discharging water from the out-of-water water discharging unit 22, bathtub water is supplied and stored in the bathtub 2 up to, for example, a water supply water level WL0 for bathing.

When the user wants to start the operation of discharging water from the water spouting section 22 outside the water surface by the bathtub device 1, the user operates the operation section 26 to select a simultaneous water discharging mode in which water is spouted from the submersible water spouting section 18 and the water spouting section 22 at the same time. Select. Note that the user can also select an underwater water spouting mode in which water is spouted only from the submersible water spouting section 18 or an out-of-water water spouting mode in which water is spouted only from the out-of-water water spouting section 22 using the operation unit 26 . Information selected by the user by operating the operation unit 26 is transmitted to the control device 40. When the control device 40 determines that the water level in the bathtub 2 is equal to or higher than the submersible spout portion 18, the control device 40 operates the pump 4.

When the control device 40 operates the pump 4, the pump 4 sucks the bathtub water in the bathtub 2 from the suction port 8 through the suction channel 6, as shown by an arrow C1. When the bathtub water passes through the collection section 16, dirt in the bathtub water is collected by the collection section 16. Then, the pump 4 pressure-feeds the sucked bathtub water to the pump downstream channel 10 on the downstream side, as shown by arrow C2. When the control device 40 is executing the simultaneous water spouting mode in which water is spouted from the underwater water spouting section 18 and the water surface water spouting section 22 at the same time, the control device 40 controls the adjustment member 32 via the adjustment member control section 34 of the branching device 30. Control is performed so that the opening area of the flow path opening to the second flow path 14 side in 30 is larger than the opening area of the flow path opening to the first flow path 12 side. At this time, the branching device 30 opens communication from the pump downstream flow path 10 to the second flow path 14 and opens communication from the pump downstream flow path 10 to the first flow path 12. while changing the distribution ratio of the flow rate. Therefore, as shown in FIG. 4, among the bathtub water flowing out from the branching device 30, the flow rate G2 of the bathtub water supplied to the second channel 14 per unit time is the same as that of the bathtub water supplied to the first channel 12. The flow rate of water per unit time is made larger than G1.

The bathtub water supplied to the first channel 12 passes through the throttle section 28, and the flow rate of the bathtub water is further throttled. Since the flow rate of the bathtub water passing through the throttle part 28 is reduced, the flow rate V2 (see FIG. 6) of the bathtub water discharged from the submersible spout 20 is reduced. At this time, the flow rate V2 of the bathtub water spouted from the submersible spout 20 can be calculated as the value obtained by dividing the water spout flow rate Q2 at the submersible spout 20 by the cross-sectional area S2 of the spout. Note that the flow velocity V2 of the bathtub water spouted from the submersible spout 20 may be calculated theoretically in this way, or the flow velocity may be actually measured at the submersible spout 20.

The bathtub water spouted from the submersible spout 20 of the submersible water spouting part 18 is an agitation flow that stirs the bathtub water in the bathtub 2 in the water below the water surface, for example, as shown by arrow F1 (see FIGS. 2 and 3). A water flow is formed in the longitudinal direction of the bathtub 2. When the user is sitting in the bathtub 2, the underwater water spouting section 18 can form a water stream that hits the user's back. When the user is not sitting in the bathtub 2, the water flow collides with the vertical wall 2b on the opposite side of the underwater spout 20 and wraps around to the left and right, as shown by the arrow F3 (see FIG. 3). A flow is formed that returns from the side to the underwater spout 20 side again. Such a flow agitates the entire bath water in the bathtub, thereby suppressing the accumulation of dirt in the water.

The bathtub water supplied to the second flow path 14 is spouted from the out-of-water spouting section 22 at a flow rate V1 (see FIG. 5). At this time, the flow rate V1 of the bathtub water spouted from the out-of-water spout 24 of the out-of-water water spouting section 22 is calculated by dividing the water outflow flow rate Q1 at the out-of-water spout 24 of the out-of-water water spouting section 22 by the cross-sectional area S1 of this spout. It can be calculated as a value. The flow rate V1 of the bathtub water spouted from the out-of-water spout 24 can be calculated not only theoretically as described above, but also by actually measuring the flow rate at the out-of-water spout 24 of the out-of-water water spout section 22. good.

Since the out-of-water water spouting section 22 forms a wide opening, the bathtub water is ejected as shown by arrow F1, and then spreads from the out-of-water water spouting section 22 in the left-right direction as shown by arrow F4. It forms a stream of water that resembles a parabola in the air. When the user is sitting with his or her back against the vertical wall 2b in the bathtub 2, the out-of-water spouting section 22 can form a water flow that hits the neck and shoulders of the user, and flows from the shoulders to the user's front side (chest). It is possible to form a water flow that spreads out to the side. On the other hand, when the user is not sitting in the bathtub 2, as shown by arrow F5 (see FIG. 2), the spouted water flow that draws an arc in the air forms a flow that jumps into the water surface. The water flow is accelerated downward by the difference in head from the out-of-water spout 24 to the water surface J. Therefore, as shown by the arrow F6, the bathtub water discharged from the water discharge part 22 outside the water surface forms a downward agitating flow that pushes dirt and the like floating on the water surface J into the water. This pushing flow forms a pushing flow that extends downward from the water surface J in the shape of a screen over the left and right width of the water outlet 24 outside the water surface. Here, when water is spouted from the out-of-water water spouting section 22 and the submersible water spouting section 18 at the same time, the flow rate V1 of the bathtub water spouted from the out-of-water water spouting section 22 is the flow rate V2 of the bathtub water spouted from the submersible water spouting section 18. It is larger than that. Therefore, the flow velocity of the pushing flow as shown by arrows F5 and F6 becomes relatively large, and dirt and the like floating on the water surface J can be pushed into the water more strongly.

By simultaneously discharging water from the out-of-water water spouting section 22 and the submersible water discharging section 18, a water flow pushed from the water surface into the water by the water discharging from the out-of-water water discharging section 22 and a stirring flow in the water spouted from the submersible water spout 20 are generated. Together, this pushes the dirt floating on the water surface into the water, stirs the dirt so that it does not stagnate in the water, and further increases the efficiency of suctioning the dirt from the suction port 8 in the water and collecting it in the collection part 16. You can improve.

Next, the water discharge flow rate change mode by the bathtub device 1 according to this embodiment will be explained with reference to FIGS. 3 to 7.
FIG. 7 is a time chart showing the operation of the flow rate, flow velocity, and opening degree of the channel in the branching device when the control device of the bathtub device according to the first embodiment of the present invention executes the water discharge flow rate change mode. In FIG. 7, the vertical axis represents the flow rate, the flow velocity, and the opening degree of the channel in the branching device, and the horizontal axis represents time. The flow rate in FIG. 7 is an example, and as an example of the water spouting flow rate Q1 from the water spouting part 22 outside the water surface, water spouting flow rate q1 and water spouting flow rate q3 are shown, and as an example of the water spouting flow rate Q2 from the submersible water spouting part 18, the water spouting flow rate q2 is shown. , a water discharge flow rate of 0 is shown.

The water spouting flow rate change mode is executed by the control device 40 after simultaneous water spouting from the out-of-water water spouting section 22 and the underwater water spouting section 18 is executed. Simultaneous water spouting from the off-surface water spouting section 22 and the underwater water spouting section 18 may be performed in a simultaneous water spouting mode, or may be performed in a water spouting flow rate change mode. The simultaneous spouting of water from the off-the-surface water spouting unit 22 and the submerged water spouting unit 18 is the same as the operation in the simultaneous water spouting mode described above, so a description thereof will be omitted.

When the control device 40 executes the water discharge flow rate change mode, the control device 40 causes the pump 4 to operate so that the flow rate Q3 of bathtub water sucked from the suction port becomes constant at time T0. Further, at time T0, the control device 40 controls the adjustment member 32 to cause water to be spouted from the out-of-water water spout 24 at a water spouting flow rate q1, and to spout water from the submersible water spouting section 18 at a water spouting flow rate q2. At this time, the relationship q3=q1+q2 is approximately established. At this time, the flow velocity V1 of the bathtub water spouted from the out-of-water water spouting section 22 is higher than the flow velocity V2 of the bathtub water spouted from the submersible water spouting section 18. After the start of execution of the water discharge flow rate change mode, the control device 40 maintains the rotation speed of the pump 4 constant and maintains the suction flow rate q3 constant.

At time T1, after starting execution of the water spouting flow rate change mode, the control device 40 determines that the flow rate V1 of the bathtub water spouted from the out-of-water water spouting section 22 is greater than the flow speed V2 of the bathtub water spouted from the submersible water spouting section 18. From this state, control is performed to reduce the water spouting flow rate q2 from the submersible water spouting section 18. Specifically, the control device 40 closes the first flow path 12 by moving the adjustment member 32 inside the first flow path 12 so that the opening degree is 0, and the control device 40 closes the first flow path 12 by moving the adjustment member 32 inside the first flow path 12 . The amount of water in the bathtub is reduced to zero, and the flow rate q2 of water from the submersible water spouting section 18 is reduced to zero. Note that the second flow path 14 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q1 from the water surface outlet 24 is increased to become the water discharge flow rate q3. That is, the control device 40 increases the proportion of the flow rate of water spouted from the out-of-water spout 24, and further increases the flow rate V1 of the water spouted from the out-of-water spout 24.

From time T1 to T2, the control device 40 continues spouting water at a water spouting flow rate q3 from the water spouting port 24 outside the water surface. In this way, by increasing the flow rate of water spouted from the outside water spouting section 22 during a predetermined period, the flow velocity V1 of the bathtub water spouted from the outside water spouting section 22 is further increased, and the water spouting from the outside water spouting section 22 increases. The effect of pushing dirt floating on the water surface into the water can be further strengthened. Therefore, dirt that was difficult to push into the water from the water surface when water was being spouted from the water outlet 24 outside the surface of the water at a flow rate q1, and a relatively large amount of dirt floating on the water surface can be pushed into the water. Furthermore, the speed at which dirt is pushed into water (removal speed) can be increased, and the depth into which dirt is pushed can be increased, thereby further improving dirt removal efficiency. From time T1 to T2, the control device 40 is in a state where the water spouting flow rate q2 from the submersible water spouting section 18 is reduced to 0, that is, a state where water spouting from the submersible water spouting section 18 is temporarily stopped. In this way, under the control of the control device 40, the adjusting member 32 of the branching device 30 adjusts the flow rate q3 of the bathtub water from the submersible water spouting section 18 for a predetermined period while the flow rate q3 of the bathtub water sucked from the suction port 8 is constant. Control is performed to reduce the water discharge flow rate.

The predetermined period is, for example, the time from time T1 to time T2. The time from time T1 to time T2 is set, for example, to a period of several seconds to several minutes, so that the stirring flow initially caused by the submersible water spouting section 18 is intermittently restarted before it becomes relatively weak. After time T2, a relatively strong agitation flow is generated in the water by the submersible water spouting section 18, and it is possible to efficiently suppress the stagnation of dirt in the water. By combining such a stirring flow in the water with a relatively strong pushing flow discharged from the out-of-water water discharge section 22, dirt can be more efficiently collected by the collection section 16.
Note that, as long as the predetermined period is a period determined by the control device 40, the predetermined period may continue from time T1 until the end of execution of the water discharge flow rate change mode. In other words, the water spouting flow rate change mode may be terminated by increasing the water spouting flow rate from the out-of-water water spouting section 22 only once. In this case, after time T1, the stirring flow caused by the underwater water spouting section 18 before time T1 continues relatively weakly in the bathtub, and this flow is compared with the water spouted from the water surface water spouting section 22. By combining this with a strong pushing flow, dirt can be collected in the collecting section 16.

At time T2, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and adjusts the amount of bath water supplied to the first flow path 12. and the water spouting flow rate from the submersible water spouting section 18 is increased from 0 to the water spouting flow rate q2. Since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q3 from the water outlet 24 outside the water surface is decreased to become the water discharge flow rate q1. Therefore, after time T2, while forming a push-in flow by the water spouted from the water spouting section 22 outside the surface of the water, a relatively strong stirring flow in the water is generated by the submerged water spouting section 18, and the formation of stagnation of dirt in the water is efficiently prevented. can be suppressed. Further, from time T2 to time T3, the effect of pushing dirt floating on the water surface into the water by the water spouted from the water spouting section 22 outside the water surface continues to a certain degree.

At time T3, the control device 40 again moves the adjustment member 32 into the first flow path 12 to bring the opening degree to 0, closes the first flow path 12, and supplies the first flow path 12. The amount of water in the bathtub is reduced to zero, and the flow rate q2 of water from the submersible water spouting section 18 is reduced to zero. Note that the second flow path 14 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q1 from the water surface outlet 24 is increased to the water discharge flow rate q3. Therefore, the flow velocity V1 of the water spouted from the out-of-water spout 24 is further increased. Thereafter, from time T3 to T4, the control device 40 continues spouting water at the water spouting flow rate q3 from the water spouting port 24 outside the water surface.

At time T4, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and changes the flow rate of water from the submersible water spouting section 18 from 0 to the water flow rate q2. increase to Therefore, the water spouting flow rate q3 from the water outlet outside the water surface 24 is reduced to become the water spouting flow rate q1. In this way, the control device 40 controls the adjustment member 32 to maintain the opening degree of the first channel 12 at 0 for a predetermined period of time, and reduces the water discharge flow rate q2 from the submersible water discharge section 18 to 0, The flow rate q1 of water discharged from the water outlet 24 outside the water surface is increased to the flow rate q3 of water discharged. In the water discharge flow rate change mode, the control device 40 repeatedly executes the control such that the adjustment member 32 is brought into a state where the opening degree of the first flow path 12 is 0 over a predetermined engine at least once, and more preferably multiple times. do. After a certain period of time has elapsed, the control device 40 ends the water spouting flow rate change mode and returns to the simultaneous water spouting mode.

Next, the water discharge flow rate change mode of the first modified example of the bathtub device 1 according to the present embodiment will be explained with reference to FIGS. 3 to 8. Regarding the operation in the water discharge flow rate change mode of the first modification, explanations regarding operations common to the above-mentioned water discharge flow rate change mode will be omitted, and mainly different parts will be explained.
FIG. 8 shows the operation of the flow rate, flow velocity, and opening degree of the channel in the branching device when the control device of the bathtub device according to the first embodiment of the present invention is executing the water discharge flow rate change mode of the first modification. This is a time chart. In FIG. 8, the vertical axis represents the flow rate, the flow velocity, and the opening degree of the channel in the branching device, and the horizontal axis represents time. The flow rate in FIG. 8 is an example, and as an example of the water spouting flow rate Q1 from the water spouting section 22 outside the water surface, water spouting flow rate q5 and water spouting flow rate q7 are shown, and as an example of the water spouting flow rate Q2 from the submersible water spouting section 18, the water spouting flow rate q4 is shown. , water discharge flow rate q6 are shown.

When the control device 40 executes the discharge water flow rate change mode of the first modification, the control device 40 causes the pump 4 to operate so that the flow rate q3 of the bathtub water sucked from the suction port becomes constant at time T0. At time T0, the control device 40 controls the adjustment member 32 to cause the submersible water spouting section 18 to spout water at a water spouting flow rate q4. The degree of opening of the adjustment member 32 at this time is larger than the degree of opening of the adjustment member 32 with respect to the above-mentioned water discharge flow rate q2, and the water discharge flow rate q4 is larger than the water discharge flow rate q2. At this time, in this embodiment, the adjustment member 32 does not adjust the opening degree on the second flow path 14 side, so the opening degree on the second flow path 14 side remains constant. Since water is spouted from the submersible water spouting portion 18 at a water spouting flow rate q4, water is spouted from the water surface spouting port 24 at a water spouting flow rate q5. At this time, the relationship q3=q4+q5 is approximately established. At this time, the flow rate V3 of the bathtub water spouted from the water spouting part 22 outside the water surface is higher than the flow rate V4 of the bathtub water spouted from the submersible water spouting part 18. Note that the water discharge flow rate q5 is smaller than the water discharge flow rate q1. In this way, the ratio and flow rate of the water discharge flow rate can be changed.

At time T1, after starting execution of the water spouting flow rate change mode, the control device 40 determines that the flow rate V3 of the bathtub water spouted from the out-of-water water spouting section 22 is greater than the flow speed V4 of the bathtub water spouted from the submersible water spouting section 18. From this state, control is performed to reduce the water spouting flow rate q4 from the submersible water spouting section 18. Specifically, the control device 40 moves the adjustment member 32 so as to close about two-thirds of the area in the first flow path 12 to bring the opening degree to about one-third. The flow path 12 is brought into a small opening state, the amount of bath water supplied to the first flow path 12 is reduced, and the water discharge flow rate q4 from the submersible water spouting section 18 is reduced to the water discharge flow rate q6. The flow velocity is also reduced from flow velocity V4 to flow velocity V6 in accordance with the water discharge flow rate. The water discharge flow rate q6 is, for example, about one third of the water discharge flow rate q4. Note that the second flow path 14 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q3 constant, the flow rate of water discharged from the water surface outlet 24 is increased from the water discharge flow rate q5 to the water discharge flow rate q7. That is, the control device 40 increases the proportion of the flow rate of the water discharged from the water surface outlet 24, and further increases the flow rate of water discharged from the surface water outlet 24 from the flow rate V3 to the flow rate V5 (not shown). Note that, also at this time, the flow velocity V5 of the bathtub water spouted from the out-of-water water spouting section 22 is higher than the flow velocity V6 (not shown) of the bathtub water spouted from the submersible water spouting section 18.

From time T1 to T2, the control device 40 continues spouting water from the out-of-water spout 24 at a water flow rate q7 and a flow velocity V5. In this way, by increasing the flow rate of water spouted from the outside water spouting section 22 for a predetermined period, the flow rate of the bathtub water spouted from the outside water spouting section 22 is increased from the flow rate V3 to the flow speed V5, and The effect of pushing the dirt floating on the water surface into the water can be further strengthened by the water discharged from the tank. Furthermore, when performing control to reduce the flow rate of water discharged from the submersible water spouting section 18, by controlling the flow rate of water discharged from the submersible water discharging section 18 to be reduced to a value greater than 0, dirt floating on the water surface can be removed into the water. It is possible to suppress the formation of dirt stagnation in the water while increasing the pushing effect.

At time T2, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12 to a substantially fully open state, and the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12 to a substantially fully open state, thereby reducing the temperature of the bathtub supplied to the first flow path 12. The amount of water is increased, and the flow rate of water discharged from the submersible water discharge section 18 is increased from the water discharge flow rate q6 (flow velocity V6) to the water discharge flow rate q4 (flow velocity V4). Since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q7 (flow velocity V5) from the water surface outlet 24 is reduced to become the water discharge flow rate q5 (flow velocity V3). Therefore, after time T2, the dirt pushed in by the relatively fast push-in flow caused by the flow velocity V5 discharged from the out-of-water water spouting section 22 is again submerged into the water by the relatively strong underwater stirring flow from the submersible water spouting section 18. Dirt can be agitated while efficiently suppressing dirt stagnation.

At time T3, the control device 40 again moves the adjustment member 32 so as to close about two-thirds of the area inside the first flow path 12, brings the first flow path 12 into a small opening state, and The water spouting flow rate q4 (flow velocity V4) from the water spouting section 18 is reduced to the water spouting flow rate q6 (flow velocity V6). At this time, since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q5 (flow velocity V3) from the water surface outlet 24 is increased to the water discharge flow rate q7 (flow velocity V5). Thereafter, the same process is repeated. In the water discharge flow rate change mode of the first modification, the control device 40 controls the adjustment member 32 to reduce the opening degree in the first flow path 12 over a predetermined engine at least once. More preferably, the process is repeated multiple times. When a certain period of time has elapsed, the control device 40 ends execution of the water spouting flow rate change mode of the first modification and returns to the simultaneous water spouting mode.

Next, the water discharge flow rate change mode of the second modified example of the bathtub device 1 according to the present embodiment will be described with reference to FIGS. 2 and 9. Regarding the operation in the water discharge flow rate change mode of the second modification, explanations regarding operations common to those in the water discharge flow rate change mode described above will be omitted, and mainly different parts will be explained.
FIG. 9 shows the operation of the flow rate, flow velocity, and opening degree of the flow path in the branching device when the control device of the bathtub device according to the first embodiment of the present invention is executing the water discharge flow rate change mode of the second modified example. This is a time chart. In FIG. 9, the vertical axis represents the flow rate, the flow velocity, and the opening degree of the channel in the branching device, and the horizontal axis represents time. The flow rate in FIG. 9 is an example, and as an example of the water spouting flow rate Q1 from the out-of-water water spouting section 22, a water spouting flow rate q1 and a water spouting flow rate q3 are shown, and as an example of the water spouting flow rate Q2 from the submersible water spouting section 18, a water spouting flow rate q2 is shown. , a water discharge flow rate of 0 is shown.

When the control device 40 executes the water discharge flow rate change mode of the second modification, the control device 40 causes the pump 4 to operate so that the flow rate q3 of the bathtub water sucked from the suction port becomes constant at time T10. After starting execution of the water discharge flow rate change mode of the second modification, the control device 40 causes the adjustment member 32 to set the opening degree of the first flow path 12 to 0, closes the first flow path 12, and closes the first flow path 12. The flow rate of water discharged from 18 is set to 0. Note that the second flow path 14 side of the branching device 30 remains open. Therefore, the control device 40 causes the water discharge flow rate from the water surface outlet 24 to be the water discharge flow rate q3 (flow velocity V3). In this way, while executing the water spouting flow rate change mode of the second modification, only water spouting from the out-of-water spout 24 can be temporarily performed.

From time T10 to T11, the control device 40 continues spouting water at a water spouting flow rate q3 (flow velocity V3) from the water spouting port 24 outside the water surface. In this way, by increasing the flow rate of water spouted from the outside water spouting section 22 for a predetermined period, the flow rate of the bathtub water spouted from the outside water spouting section 22 is set to the increased flow velocity V3, and the water spouted from the outside water spouting section 22 is increased. This can further strengthen the effect of pushing dirt floating on the water surface into the water. Therefore, dirt that was difficult to push into the water from the water surface when water was being spouted simultaneously from the out-of-water spout 24 and the submerged water spout part 18, and a relatively large amount of dirt floating on the water surface can be pushed into the water. Furthermore, the speed at which dirt is pushed into water (removal speed) can be increased, and the depth into which dirt is pushed can be increased, thereby further improving dirt removal efficiency. From time T10 to T11, the control device 40 is in a state where the water spouting flow rate q2 from the submersible water spouting section 18 is reduced to 0, that is, a state where water spouting from the submersible water spouting section 18 is temporarily stopped. The predetermined period is, for example, the time from time T10 to time T11. The time from time T10 to time T11 can be set longer than the time from time T11 to time T12, which will be described later. The time from time T10 to time T11 may be set longer than the time from time T1 to time T2. For example, the time from time T10 to time T11 can be set to be twice or more the time from time T1 to time T2. The time from time T10 to time T11 is set to, for example, a period of several seconds to several tens of minutes.

At time T11, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and changes the water flow rate from the submersible water spouting section 18 from 0 to the water flow rate q2. (Flow rate V2). Since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q3 from the water surface outlet 24 is reduced to the water discharge flow rate q1 (flow velocity V1). Therefore, after time T2, while forming a forced flow by the water spouted from the water spouting section 22 outside the surface of the water, a relatively strong stirring flow in the water is generated by the submerged water spouting section 18, and the formation of stagnation of dirt in the water is efficiently prevented. can be suppressed. Further, from time T11 to time T12, the effect of pushing dirt floating on the water surface into the water by the water spouted from the water spouting section 22 outside the water surface continues to be effective to a certain extent.

At time T12, the control device 40 again moves the adjustment member 32 into the first flow path 12 to bring the opening degree to 0, thereby closing the first flow path 12 and discharging water from the submersible water spouting section 18. Decrease the flow rate q2 to 0. Note that the second flow path 14 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q1 from the water surface outlet 24 is increased to the water discharge flow rate q3. Therefore, the flow rate of the water discharged from the water outlet 24 is increased from the flow rate V1 to the flow rate V3. Thereafter, after time T12, the control device 40 continues spouting water at the water spouting flow rate q3 from the water spouting port 24 outside the water surface. In the water discharge flow rate change mode of the second modification, the control device 40 repeatedly controls the adjustment member 32 in a predetermined engine from time T10 to time T12 at least once, more preferably multiple times. When a certain period of time has elapsed, the control device 40 ends execution of the water spouting flow rate change mode of the second modification and returns to the simultaneous water spouting mode.

Next, with reference to FIGS. 7 and 10, it will be explained that the landing position on the water surface J in the bathtub 2 of the bathtub water spouted from the water spouting part 22 outside the water surface by the bathtub device 1 according to the present embodiment is changed. .
FIG. 10 is a diagram illustrating how the landing position of the bathtub water discharged from the water surface outside the water surface on the water surface in the bathtub is changed in the bathtub device of FIG. 2.
According to the water spouting flow rate change mode as described above, as shown in FIG. 7, the flow velocity of the bathtub water spouted from the water surface outside water spouting section 22 is the flow velocity V1 at time T0, and the flow velocity varies from the flow velocity V1 at time T1. The flow rate is increased to V3, the flow rate is decreased from V3 to V1 at time T2, the flow rate is increased from V1 to V3 at time T3, and the flow rate is decreased from V3 to V1 at time T4. Therefore, the position at which the bathtub water spouted from the off-surface water spouting section 22 lands on the water surface in the bathtub 2 is changed. For example, when water is being spouted from the out-of-water water spouting section 22 at a flow rate of V1, the landing position of the spouted water is the landing position H1, and when water is being spouted from the out-of-water water spouting section 22 at a flow rate of V3, the water landing position of the spouted water is at the landing position H1. The position is water landing position H2. In this embodiment, at time T1, as the flow rate of the water spouted from the out-of-water water spouting section 22 is increased from the flow rate V1 to the flow rate V3, the water landing position changes from the water landing position H1 to the water landing position H2 outside the water surface. It moves in the direction away from the water spouting part 22 (in the direction away from the water surface water spouting part 22 in the longitudinal direction). Therefore, the water discharged from the outside water surface water discharge section 22 can push dirt under the water surface J as shown by the arrow F7 over the area I from the water landing position H1 to the water landing position H2 with the water discharge width of the outside water surface water discharge section 22. . Therefore, the dirt floating on the water surface can be pushed into the water over a wider area by the water discharged from the water discharge section 22 outside the water surface.

Further, at time T1, the flow rate is increased from V1 to V3, and then at time T2, the flow rate is decreased from V3 to V1. At this time, at time T2, as the flow rate of the water spouted from the water spouting part 22 is reduced from the flow velocity V3 to the flow velocity V1, the water landing position of the water spouting part 22 changes from the water landing position H2 to the water landing position H1. (in the direction approaching the out-of-water water discharging section 22 in the longitudinal direction). Therefore, once the water landing position has moved to the water landing position H2, the water spouted from the water surface outside the water spouting section 22 can push the dirt below the water surface J while returning across the region I again. Therefore, the dirt floating on the water surface can be pushed into the water in a wider area by the water spouted from the water spouting part 22 outside the water surface, and the water landing position that has returned to the position where the water landing position once passed is located. , dirt can be pushed into the water again, and dirt floating on the water surface can be pushed into the water more efficiently.

Further, at time T3, the flow velocity is increased from V1 to V3, and the water landing position moves again from the water landing position H1 to the water landing position H2 in the direction away from the water discharging section 22 outside the water surface. Therefore, the water landing position can be periodically moved back and forth from the water landing position H1 to the water landing position H2 and from the water landing position H2 to the water landing position H1, and the water landing position can be swung. Dirt can be pushed into the water in the area of the surface that spans. In this manner, the bathtub device 1 is configured such that, while the flow rate of the bathtub water sucked from the suction port 8 is constant, the landing position of the bathtub water spouted from the water surface outside the water spouting section 22 on the water surface in the bathtub 2 is adjusted. , configured to be changed. In addition, in the bathtub device 1, even when the flow rate of the bathtub water sucked from the suction port 8 is not constant, the landing position of the bathtub water discharged from the water surface outside the water discharge part 22 on the water surface in the bathtub 2 is changed. It is also possible to configure it so that

Such a variation in the water landing position can be executed by executing the water discharge flow rate change mode by the control device 40. It may also be performed by changing the orientation. Specifically, the out-of-water water spouting section 22 is provided with a changing mechanism that changes the orientation of the out-of-water spout 24 of the out-of-water water spouting section 22 from horizontal to downward or upward so as to physically move the head up and down. Good too. Such a changing mechanism is electrically connected to the control device 40, and the direction of the out-of-water spout 24 can be changed by the control device 40, so that the water landing position can be changed in the longitudinal direction. In addition, as a modification, a changing mechanism may be provided in the out-of-water water spouting section 22 to change the direction of the out-of-water water spout 24 from the front facing in the longitudinal direction to the rightward or leftward direction so as to physically shake the head from side to side. good. At this time, the water landing position varies in the left-right direction in an arc. Such a changing mechanism is electrically connected to the control device 40, and the control device 40 changes the direction of the out-of-water spout 24, so that the water landing position can be changed in the left-right direction.

According to the bathtub device 1 according to the first embodiment of the present invention described above, the flow rate of the bathtub water spouted from the out-of-water water spouting section 22 is made larger than the flow speed of the bathtub water spouted from the submerged water spouting section 18. , it is configured such that water is simultaneously spouted from the water spouting section 22 outside the surface of the water and the water spouting section 18 under the water. As a result, it is possible to change the pump 4 to a larger one to increase the circulating flow rate and increase the amount of dirt collected. The dirt in the water in the bathtub 2 and the dirt on the water surface of the bathtub 2 can be collected without providing separate collecting devices.
Further, according to the above-described configuration, dirt floating on the water surface of the bathtub 2 and which is difficult to be drawn into the water can be easily pushed into the water by the relatively high-speed water flow discharged from the water spouting section 22 outside the water surface. Furthermore, the dirt in the water in the bathtub 2 is agitated by the relatively low-speed water flow discharged from the submersible water spouting part 18, and it is possible to suppress the dirt from stagnating in the water, and by stirring by the relatively low-speed water flow, The formation of a flow that sucks dirt from the suction port 8 into the suction channel 6 can be made less likely to be obstructed. Therefore, the dirt floating on the water surface can be pushed into the water, and the stagnation of dirt in the water can be suppressed. Furthermore, efficient suction into the suction channel 6 can be realized, and the collection part 16 in the suction channel 6 can remove dirt from the bathtub. Also, the efficiency of collecting dirt on the water surface of the bathtub 2 can be increased.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the flow path resistance of the first flow path 12 is configured to be larger than the flow path resistance of the second flow path 14, and The value obtained by dividing the water discharge flow rate Q1 at at least one out-of-water spout 24 of the submersible water spout 22 by the cross-sectional area S1 of this spout is the water discharge flow rate Q2 at least one submersible spout 20 of the submersible water spout 18 divided by the cross-sectional area of this spout. It is larger than the value divided by S2. As a result, the flow rate of the bathtub water spouted from at least one out-of-water spout 24 of the out-of-water spout section 22 is greater than the flow speed of bathtub water spouted from at least one submersible spout 20 of the submersible water spout section 18. In this way, water can be spouted from the out-of-water water spouting section 22 and the underwater water spouting section 18 at the same time. Therefore, the dirt floating on the water surface can be pushed into the water, and the stagnation of dirt in the water can be suppressed. Furthermore, efficient suction into the suction channel 6 can be realized, and the collection part 16 in the suction channel 6 can remove dirt from the bathtub. can improve the efficiency of dirt collection. Moreover, not only when there is one out-of-water spout 24 and one submersible spout 20, but also when there are a plurality of out-of-water spouts 24 and/or submersible spouts 20, at least one of the out-of-water spouts 22 The outside water spout section 22 and Water can be spouted from the underwater water spouting section 18 at the same time. Therefore, even when there are a plurality of out-of-water spouts 24 and/or underwater spouts 20, dirt floating on the water surface can be pushed into the water relatively easily, and stagnation of dirt in the water can be suppressed. Efficient suction into the suction channel 6 can be realized, and the efficiency of collecting dirt in the bathtub water by the collection section 16 in the suction channel 6 can be increased.

Furthermore, according to the bathtub device 1 according to the first embodiment of the present invention, the first flow path 12 includes a constriction section 28 that narrows the cross section of the flow path upstream of the submersible spout 20. . Thereby, the flow rate of the bathtub water from the first flow path 12 to the submersible spout 20 can be throttled by the throttle part 28 of the first flow path 12, and the flow rate of the bathtub water spouted from the submersible spout 20 can be reduced. can. Moreover, the simple configuration in which the first flow path 12 includes the constriction part 28 makes the flow path resistance of the first flow path 12 larger than the flow path resistance of the second flow path 14, and the flow from the first flow path 12 to the water The flow rate of the bathtub water reaching the spout 20 is made smaller than the flow rate of the bathtub water reaching the out-of-water spout 24 from the second flow path 14, so that the flow rate of the bathtub water spouted from the out-of-water spout 22 is adjusted to the submerged spout. A relationship in which the flow velocity is greater than that of the bathtub water discharged from 18 can be achieved relatively easily.

Furthermore, according to the bathtub device 1 according to the first embodiment of the present invention, the branching device 30 uses the adjustment member 32 to change the opening area of the branch portion that opens toward the second flow path 14 side to the opening area that opens toward the first flow path 12 side. It can be made larger than the opening area. As a result, the flow rate of bathtub water from the second flow path 14 to the out-of-water spout 24 is made larger than the flow rate of bathtub water from the first flow path 12 to the submersible spout 20, so that water is spouted from the out-of-water water spout 22. It is possible to relatively easily realize a relationship in which the flow velocity of the bathtub water is greater than the flow velocity of the bathtub water discharged from the submersible water spouting section 18. In addition, by providing the controllable adjustment member 32 in the branching device 30, the above relationship can be achieved relatively easily, and without adding any other device or improving other configurations, for example, it is possible to A water spouting pattern in which only water is spouted from the part 22, a water spouting pattern in which only water is spouted from the submersible water spouting part 18, etc. can also be realized.

Furthermore, according to the bathtub device 1 according to the first embodiment of the present invention, the flow rate control section controls the water discharge from the submersible water spouting section 18 for a predetermined period while the flow rate of the bathtub water sucked from the suction port 8 is constant. Performs control to lower the flow rate. As a result, while the flow rate of bath water sucked in from the suction port 8 is constant, the flow rate of water spouted from the submersible water spouting section 18 is reduced over a predetermined period, and the flow rate of water spouted from the water spouting section 22 outside the water surface is reduced during this predetermined period. This increases the flow rate of the bathtub water discharged from the water discharge section 22 outside the water surface. Therefore, the effect of pushing the dirt floating on the water surface into the water by the water discharged from the water discharge section 22 outside the water surface can be further strengthened.

Furthermore, according to the bathtub device 1 according to the first embodiment of the present invention, the adjustment member 32 of the branching device 30 is configured to control the submersible water spout for a predetermined period while the flow rate of the bathtub water sucked from the suction port 8 is constant. Control is performed to reduce the flow rate of water discharged from 18. As a result, while the flow rate of the bathtub water sucked in from the suction port 8 is constant, the flow rate of water spouted from the submersible water spouting section 18 is reduced over a predetermined period, and the flow rate of water spouted from the water spouting section 22 outside the water surface is reduced during this predetermined period. This increases the flow rate of the bathtub water discharged from the water discharge section 22 outside the water surface. Therefore, the effect of pushing the dirt floating on the water surface into the water by the water discharged from the water discharge section 22 outside the water surface can be further strengthened.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the position where the bathtub water, which is discharged from the water surface outside the water surface discharge section 22, lands on the water surface in the bathtub 2 is changed. . Thereby, the landing position of the bathtub water discharged from the off-surface water spouting section 22 on the water surface in the bathtub 2 can be changed in a wider area than the water landing area that does not change when the water landing position does not change. Therefore, the dirt floating on the water surface can be pushed into the water over a wider area by the water discharged from the water discharge section 22 outside the water surface.

Furthermore, according to the bathtub device 1 according to the first embodiment of the present invention, when the submersible water spout 18 is provided in the first area A1, the suction port 8 is provided in the second area A2, and the submersible water spout 18 is provided in the second area A2. When provided in the second area A2, the suction port 8 is provided in the first area A1. As a result, the submersible water spouting part 18 and the suction port 8 are separated into a first area A1 of the two halves of the bathtub 2 in the longitudinal direction and a second area A2 on the opposite side of the first area A1. Placed. Therefore, the water flow caused by water spouting from the submersible water spouting section 18 can be made less likely to obstruct the suction of bathtub water from the suction port 8.

Next, a bathtub device according to a second embodiment of the present invention will be described with reference to FIGS. 11 to 14. The second embodiment is an example in which a jet pump unit is applied to a bathtub device according to the present invention. Since the bathtub device 101 according to the second embodiment has almost the same structure as the bathtub device 1 according to the first embodiment described above, only the points different from the first embodiment of the second embodiment of the present invention will be explained. Similar parts will be designated by the same reference numerals in the drawings and their description will be omitted.

As shown in FIG. 11, a bathtub device 101 according to a second embodiment of the present invention is a bathtub device 101 provided in a bathtub 2 that stores bathtub water. The bathtub 2 of the bathtub device 101 has a casing 21 (see FIG. 1) attached to the outside thereof.

The second flow path 114 extends from the branched portion with the first flow path 12 to the off-the-water surface water discharge section 22 . The second flow path 114 is formed by a circular pipe. The second flow path 114 includes an injection section side flow path 148 from a branching part with the first flow path 12 to an injection section 146 (described later), and a bathtub water introduction path 150 extending downstream of a jet pump water storage section 142 (described later). It is equipped with

The bathtub device 101 further includes a jet pump unit 140 provided on the second flow path 114. The jet pump unit 140 connects the bathtub 2 and the jet pump water storage section 142 to a jet pump water storage section 142 in which bathtub water drawn by the jet pump action is stored, and transfers the bathtub water to the jet pump water storage section 142. The jet pump flow path 144 forms a flow path that can be introduced to It includes an injection section 146 that accelerates the bath water and injects it into the jet pump water storage section 142. Each device of the jet pump unit 140 is arranged on the back side of the vertical wall 2b (between the vertical wall 2b and the wall surface W).

The jet pump water storage section 142 is provided between the injection section side flow path 148 of the second flow path 114 and the bathtub water introduction path 150. The jet pump water storage section 142 is arranged in a region near the back side of the vertical wall 2b of the bathtub 2, and is arranged in a relatively narrow region between the vertical wall 2b and the wall surface W. The jet pump water storage section 142 forms a box-shaped water storage chamber, and forms a water storage space with a width larger than the opening area D1 of the injection section 146, and a water storage space with a width larger than the opening area of the bathtub water introduction path 150. is formed. The jet pump water storage section 142 is communicated with the bathtub 2, and the bathtub water of the bathtub 2 flows into the jet pump water storage section 142 via the jet pump channel 144.

The jet pump water storage section 142 is arranged at a position below a predetermined water surface J in the bathtub 2, and more preferably at a position lower than an intermediate height position from the top end 2c to the bottom 2a of the bathtub 2. has been done. Therefore, when bathtub water is stored in the bathtub 2, the bathtub water also flows into the jet pump water storage section 142 and is stored therein. In a state where bathtub water is not being spouted from the off-the-surface water spouting section 22, the bathtub water can go back and forth between the jet pump water storage section 142 and the water storage area within the bathtub 2. Therefore, the temperature of the bathtub water in the jet pump water storage section 142 and the bathing area in the bathtub 2 are substantially the same. Note that the jet pump water storage section 142 may be provided at a position above the water surface J.

The jet pump water storage section 142 is connected to a water supply source or a water supply device, etc., separate from the bathtub 2, and receives bathtub water supplied from the water supply source, etc., to form a bathtub water storage chamber. Good too. That is, bathtub water may be supplied to the jet pump unit 140 from another external water supply source, etc., without or while supplying bathtub water from the bathtub 2 to the jet pump water storage section 142.

The jet pump channel 144 communicates with the bathtub 2 and allows bathwater from the bathtub 2 to flow therein. The jet pump flow path 144 extends from the jet pump suction port 152 formed in the bathtub 2 along the side of the bathtub 2, ascends the back side area of the vertical wall 2b, and flows into the jet pump water storage section 142. It is connected to the bottom surface 142a. In this way, the jet pump flow path 144 forms a communication flow path between the jet pump water storage section 142 and the bathtub 2. Since the jet pump flow path 144 is provided, the bathtub water of the bathtub 2 can be transferred to the jet pump water storage section 142 without separately providing a dedicated water supply source or the like for supplying bathtub water to the jet pump water storage section 142. The overall structure of the bathtub device 101 can be simplified and formed. Furthermore, since a dedicated water supply source or the like for supplying bathtub water to the jet pump water storage section 142 from outside the bathtub 2 is not separately provided, by receiving additional water from the outside, the water level in the bathtub 2, i.e. It is possible to suppress the increase in water volume. The jet pump suction port 152 is arranged at the same height as the suction port 8 and is opened in a direction parallel to the suction port 8. The jet pump suction port 152 is provided in the first region A1 on the opposite side to the center line B that bisects the long side of the bathtub. The jet pump flow path 144 may be provided so as to extend straight from the vertical wall 2b to the back side so that the distance to the jet pump water storage section 142 is as short as possible.

The injection part 146 is provided so as to penetrate the bottom surface 142a of the jet pump water storage part 142 and protrude into the inside of the jet pump water storage part 142. The injection part 146 is arranged with its opening facing upward, and is oriented toward the bathtub water introduction path 150. The injection part 146 functions as a jet nozzle and injects the bathtub water through the jet pump water storage part 142 and toward the bathtub water introduction path 150 to induce a jet pump action. The injection part 146 is formed so that the opening area D1 (inner diameter of the flow path of the injection part 146) of the injection part 146 is narrower than the inner diameter of the injection part side flow path 148 on the upstream side of the injection part 146. Therefore, the bathtub water pumped by the pump 4 is further accelerated within the injection section 146, and is ejected from the injection section 146 as a high-speed stream of bathtub water. The injection section 146 is capable of ejecting a high-speed jet stream having linear directivity toward the inside of the jet pump water storage section 142 and the bathtub water introduction path 150. The high-speed jet stream injected from the outlet opening of the injection part 146 gradually increases its flow rate and gradually decreases its flow velocity by drawing in the bath water in the jet pump water storage part 142.

The injection section 146 injects bathtub water from an opening with a narrowed flow path diameter to flow into the bathtub water introduction path 150 through the jet pump water storage section 142, thereby causing a predetermined pressure loss. The magnitude of this pressure loss can be relatively close to the magnitude of the pressure loss when bathtub water is discharged from the submersible water spout 18, and is determined by the resistance of the flow path passing through the jet pump unit 140 and the submersible water spout. By making the resistance of the flow path leading to the flow path 18 relatively close to each other, it is possible to adjust the flow rate and flow rate while simultaneously causing bath water to flow from the common pump 4 to both flow paths.

The bathtub water introduction path 150 extends upward from an opening in the upper surface 142b of the jet pump water storage section 142 facing the injection section 146. The bathtub water introduction path 150 forms a flow path that extends linearly on an extension of the opening direction of the injection portion 146 . More specifically, the bathtub water introduction path 150 forms a circular tubular flow path that extends linearly upward from the top surface 142b of the jet pump water storage section 142.
The second flow path 114 is formed such that the opening area D2 of the bathtub water introduction path 150 extending downstream of the jet pump water storage section 142 is larger than the opening area D1 of the injection section 146. Therefore, the bathtub water introduction path 150 is formed in such a size that it can introduce a flow rate of bathtub water greater than the flow rate of the bathtub water sprayed from the injection section 146 . The injection part 146, the jet pump water storage part 142, and the bathtub water introduction passage 150 form a linear flow path extending in one direction, and a high-speed flow is generated along the direction of the high-speed jet stream injected from the injection part 146. can be formed. The bathtub water introduction path 150 of the second flow path 14 is connected to the horizontal expansion portion 15 at the upper end in the vertical direction. The bathtub water supplied by the bathtub water introduction path 150 spreads in the left-right direction in the expanding section 15 and is spouted relatively uniformly in the left-right direction from the water outlet 24 outside the water surface.

The collection section 16 is provided on the suction channel 6 and the jet pump channel 144. The collection part 16 may be arranged to be provided in either the suction channel 6 or the jet pump channel 144.

Even when the jet pump unit 140 is provided on the second flow path 114 as described above, the water spouted from the out-of-water water spouting section 22 is directed to the user who is sitting with his or her back against the vertical wall 2b. It can be placed on the shoulder. The bathtub water spouted from the out-of-water water spouting part 22 flows so as to spread from the shoulders to the user's front side (chest side), and/or so as to spread from the shoulders to the user's back side (back side). Therefore, the bath water can warm not only the neck and shoulders, but also the chest, abdomen, back, waist, etc. For example, as described above, a water spouting state in which a portion of the bath water spouted from the out-of-water water spouting section 22 is spouted toward the user's shoulders is defined as a shoulder bath water spouting state.
In addition, when the user is not taking a bath in the bathtub 2, the bathtub water spouted from the outside water spout 22 flows from the outside water spout 24 to the water supply water level WL0. Forms a flow that appears to drop down to the water surface and dive into the water. Therefore, the bathtub water spouted from the water spouting part 22 outside the water surface forms a downward agitating flow that pushes dirt and the like floating on the water surface into the water. In this way, the off-the-water water discharging unit 22 functions as a water surface agitation function unit that agitates water from the water surface into the water in the vertical direction. Note that even when the user is taking a bath in the bathtub 2, the bathtub water spouted from the outside water spouting section 22 is agitated downward to a certain extent to push dirt, etc. floating on the water surface into the water. It is possible to form a flow of

The bathtub device 101 includes an out-of-water water spouting section 22 and an underwater water spouting section 18 such that the flow rate of bathtub water spouted from the out-of-water water spouting section 22 is greater than the flow speed of bathtub water spouted from the submersible water spouting section 18 . It is configured so that water is spouted from both at the same time. In order to realize such a relationship, by using the jet pump unit 140, the flow rate of the bathtub water supplied to the out-of-water water spouting section 22 per unit time is equal to the flow rate of the bathtub water supplied to the submersible water spouting section 18 per unit time. The flow rate per area is larger than that. Moreover, such a relationship is realized not only by the jet pump unit 140 but also by the shape of the water spout of the out-of-water water spouting section 22 and/or the submersible water spouting section 18 (water spout cross-sectional area S1 and/or water spout cross-sectional area S2). You can. When such a relationship is realized, as shown in FIG. From the submersible water spout 20, the value of the water flow velocity V1 from the out-of-water water spout 22 is the value obtained by dividing the water flow rate Q2 at at least one submersible spout 20 of the submersible water spout 18 by the cross-sectional area S2 of the water spout 20. It becomes larger than the water discharge flow velocity V2 of.

The control device 40 is connected to an operating section 26 operated by a user. Further, the control device 40 is electrically connected to the pump 4, the branching device 30, etc., and can mutually transmit and receive electrical signals, so that each of the above-mentioned parts can be electrically operated. The control device 40 is attached to a wall W in the bathroom. The control device 40 can also be provided on a wall or the like outside the bathroom. The control device 40 may be located at a location physically separated from the bathroom via the Internet, or may be formed by placing a predetermined program on a storage device such as a server via the Internet. You can. At least some of the functions of the control device 40 may be realized by a cloud (cloud computing) or the like. The control device 40 incorporates or uses an arithmetic device such as a CPU and a storage device such as a memory, and can control electrically connected devices based on a predetermined control program or the like. For example, the control device 40 takes into consideration that the jet pump unit 140 is provided, and controls the simultaneous water discharge mode, the water discharge flow rate change mode, the water discharge flow rate change mode of the first modification, and the water discharge flow rate change of the second modification. The storage device stores a control program capable of executing at least one of the submerged water discharging mode, the submerged water discharging mode, and the out-of-water discharging mode.

The bathtub device 101 further includes a branching device 30 provided to branch the first flow path 12 and the second flow path 114 from the pump downstream flow path 10. The branching device 30 has an opening area opened to the second flow path 114 side and/or an opening area opened to the second flow path 114 side such that the opening area opened to the second flow path 114 side is larger than the opening area opened to the first flow path 12 side at the branch portion. Alternatively, it includes an adjustment member 32 that adjusts the opening area opened to the first flow path 12 side, and an adjustment member control section 34 that controls the adjustment member 32.

The branching device 30 in the second embodiment has the same structure as the branching device 30 in the first embodiment, so a description thereof will be omitted.
The adjusting member 32 of the branching device 30 allows the opening area of the branch portion opening to the second flow path 114 side to be larger than the opening area of the opening to the first flow path 12 side, thereby reducing the bathtub supplied to the second flow path 114. The flow rate of water per unit time can be greater than the flow rate of bathtub water supplied to the first flow path 12 per unit time. Note that since the jet pump unit 140 is provided on the second flow path 114, the flow rate of the bathtub water passing through the second flow path 114 is increased by the jet pump unit 140. Therefore, the adjustment member 32 of the branching device 30 does not necessarily have to be controlled so that the opening area opening to the second flow path 114 side is larger than the opening area opening to the first flow path 12 side. For example, the adjustment member 32 may be controlled so that the opening area opening to the second flow path 14 side is the same as the opening area opening to the first flow path 12 side, or the adjustment member 32 may be The opening area opened to the second flow path 14 side may be controlled to be smaller than the opening area opened to the first flow path 12 side. Even if the flow rate per unit time of the bathtub water supplied to the second flow path 114 is smaller than or the same as the flow rate per unit time of the bathtub water supplied to the first flow path 12, The flow rate of the bathtub water passing through the second channel 114 is increased by the jet pump unit 140, and the flow rate per unit time of the bathtub water supplied to the out-of-water water spouting section 22 becomes the same as that of the bathtub water supplied to the submersible water spouting section 18. can be larger than the flow rate per unit time. In this way, even when the jet pump unit 140 is used, the control device 40 controls the adjustment member 32 to cause water to be spouted from the out-of-water water spout 24 at a water flow rate of Q1, and from the submersible water spout section 18 to have a water spout flow rate of Q2. It is possible to make water spout. Therefore, the bathtub device 101 connects the out-of-water water spouting section 22 and the submersible water so that the flow rate V1 of the bathtub water spouted from the out-of-water water spouting section 22 is greater than the flow speed V2 of the bathtub water spouted from the submersible water spouting section 18. It is configured so that water is spouted from the water spouting section 18 at the same time.
Note that the branching device 30 is omitted and the jet pump unit 140 increases the flow rate of the bathtub water passing through the second flow path 114, and the flow rate of the bathtub water supplied to the out-of-water water spouting section 22 per unit time is increased by the jet pump unit 140. The flow rate may be made larger than the flow rate of bathtub water supplied to the submersible water spouting section 18 per unit time. In this case as well, water can be spouted from the out-of-water spouting port 24 at a water spouting flow rate Q1, and water can be spouted from the submersible water spouting section 18 at a water spouting flow rate Q2. Therefore, the branching device 30 may be omitted.

Next, the simultaneous water discharging mode by the bathtub device 101 according to this embodiment will be explained with reference to FIG. 11.
Since the operation in the simultaneous water discharging mode in the second embodiment is generally the same as the operation in the simultaneous water discharging mode in the first embodiment, the explanation regarding the common operations will be omitted, and the different operations will be explained.

When attempting to start the operation of discharging water from the water spouting section 22 outside the water surface by the bathtub device 101, the user operates the operation section 26 to select a simultaneous water spouting mode in which water is spouted from the submersible water spouting section 18 and the water spouting section 22 at the same time. Select.

When the control device 40 operates the pump 4, the pump 4 sucks the bathtub water in the bathtub 2 from the suction port 8 through the suction channel 6, as shown by an arrow C11. When the bathtub water passes through the collection section 16, dirt in the bathtub water is collected by the collection section 16. Then, the pump 4 pressure-feeds the sucked bathtub water to the pump downstream channel 10 on the downstream side, as shown by an arrow C12. When the control device 40 is executing the simultaneous water spouting mode in which water is spouted from the submersible water spouting section 18 and the water surface water spouting section 22 at the same time, the control device 40 controls the adjustment member 32 via the adjustment member control section 34 of the branching device 30 to Control is performed so that the opening area opening to the flow path 114 side is larger than the opening area opening to the first flow path 12 side. At this time, the branching device 30 opens communication from the pump downstream flow path 10 to the second flow path 114 and opens communication from the pump downstream flow path 10 to the first flow path 12. while changing the distribution ratio of the flow rate. Therefore, as shown in FIG. 4, among the bathtub water flowing out from the branching device 30, the flow rate G2 of the bathtub water supplied to the second flow path 114 per unit time is the same as that of the bathtub water supplied to the first flow path 12. The flow rate of water per unit time is made larger than G1.

The flow of the bathtub water supplied to the first flow path 12 is the same as that in the first embodiment, so a description thereof will be omitted hereafter.

The bathtub water supplied to the injection section side channel 148 of the second channel 114 is directed inward from the injection section 146 through the jet pump water storage section 142 into the bathtub water introduction channel 150, as shown by arrow C13. is injected. The bathtub water injected from the injection part 146 at high speed forms a jet stream, and forms a flow having high speed and strong propulsive force in the direction of the opening of the injection part 146. At this time, the flow of the injected bathtub water produces an effect of drawing in surrounding bathtub water due to a jet pump action, that is, an ejector effect. In this embodiment, the bathtub water in the jet pump water reservoir 142 is drawn in as shown by arrow C14 with respect to the linear jet flow shown by arrow C13. At this time, the flow rate x2 of the bathtub water drawn from inside the bathtub communication part 42 is added to the flow rate x1 of the bathtub water injected from the injection part 146, and the flow rate x3 of the bathtub water in the bathtub water introduction path 150 with a larger flow rate is added. becomes. Such a flow rate relationship can be expressed by the equation x1+x2=x3. At this time, the flow rate x2 of the bathtub water drawn from inside the jet pump water storage section 142 is set to be higher than the flow rate x1 of the bathtub water injected from the injection section 146. The flow rate x3 of the bathtub water in the bathtub water introduction path 150 is set, for example, in a range of two to four times the flow rate x1 of the bathtub water injected from the injection section 146. In this manner, the jet pump unit 140 can realize a technique of amplifying the water discharge flow rate by involving the bathtub water in the jet pump water storage section 142 on the downstream side of the injection section 146 using the jet pump action.

The bathtub water injected from the injection part 146 draws in the bathtub water flowing from inside the bathtub 2 into the jet pump water storage part 142, so that the bathtub water injected from the injection part 146 contains low-temperature bathwater (from the previous use). Even if residual water in the pump 4, etc.) is mixed in, the bathtub water in the jet pump water storage section 142 is drawn in and supplied to the out-of-water discharge section 22, so that the temperature of the bathtub water in the bathtub 2 does not change. Bathtub water having a relatively similar temperature can be spouted from the water surface spouting section 22. Therefore, it is possible to more reliably prevent the user from feeling cold, and the water discharged from the out-of-water discharge section 22 can be used immediately after the start of use of the pump 4, thereby improving the startability of the bathtub device 1. can be improved.

As described above, the bathtub water injected from the injection section 146 draws the bathtub water in the jet pump water storage section 142 and flows into the bathtub water introduction path 150 . The bathtub water in the bathtub water introduction path 150 flows upward while maintaining the force and flow velocity of the bathtub water injected from the injection section 146 and reaches the expansion section 15 . The flow of bathtub water becomes a flow spread in the left-right direction at the expanding section 15 and reaches the off-the-water surface water spouting section 22 . As shown by arrow F2 (see FIG. 2, etc.), the bathtub water is discharged like a waterfall toward the front side (inside the bathtub) from the out-of-water spout 24, which is formed long in the left-right direction. In this way, the bathtub water is discharged as a band-like stream with a width about shoulder width, and is applied relatively uniformly to the user's neck and shoulders. The bathtub water spouted from the off-surface water spouting section 22 forms a stable flow of water with a substantially constant width and thickness. The bathtub water spouted from the out-of-water water spouting section 22 can flow relatively evenly over a wide range of areas such as the user's neck, shoulders, chest, and back. You can warm yourself up so you don't get cold. The bathtub water supplied to the out-of-water water spouting section 22 is spouted from the out-of-water water spouting section 22 at a flow rate V1. The water discharged from the water surface outside the water discharge section 22 and the flow of the discharged bathtub water are the same as those in the first embodiment, so a description thereof will be omitted hereafter.

Next, a water discharge flow rate change mode by the bathtub device 101 according to the second embodiment will be described with reference to FIGS. 11 and 12. Since the operation in the water discharge flow rate change mode in the second embodiment is generally the same as the operation in the water discharge flow rate change mode in the first embodiment, the explanation regarding the common operation will be omitted, and the different operation will be explained.
FIG. 12 is a time chart showing the operation of the flow rate, flow velocity, and opening degree of the channel in the branching device when the control device of the bathtub device according to the second embodiment of the present invention executes the water discharge flow rate change mode. . In FIG. 12, the vertical axis represents the flow rate, the flow velocity, and the opening degree of the channel in the branching device, and the horizontal axis represents time. The flow rate in FIG. 12 is an example, and as an example of the water spouting flow rate Q1 from the water spouting part 22 outside the water surface, water spouting flow rate q11 and water spouting flow rate q15 are shown, and as an example of the water spouting flow rate Q2 from the submersible water spouting part 18, the water spouting flow rate q12 is shown. , a water discharge flow rate of 0 is shown.

The water spouting flow rate change mode is executed by the control device 40 after simultaneous water spouting from the out-of-water water spouting section 22 and the underwater water spouting section 18 is executed. Simultaneous water spouting from the off-surface water spouting section 22 and the underwater water spouting section 18 may be performed in a simultaneous water spouting mode, or may be performed in a water spouting flow rate change mode. The simultaneous water spouting from the off-surface water spouting section 22 and the submerged water spouting section 18 is the same as the operation in the above-mentioned simultaneous water spouting mode, so a description thereof will be omitted.

When the control device 40 executes the water discharge flow rate change mode, the control device 40 causes the pump 4 to operate so that the flow rate q13 of bath water sucked from the suction port becomes constant at time T0. Further, at time T0, the control device 40 controls the adjustment member 32 to cause the out-of-water water spout 24 to spout water at a water spouting flow rate q11, and to make the submersible water spouting section 18 spout water at a water spouting flow rate q12. At this time, the jet pump unit 140 is provided in the bathtub device 101, and the flow rate q14 is further supplied from the jet pump channel 144, so that the flow rate of water discharged from the out-of-water spout 24 is increased. Therefore, the relationship q13+q14=q11+q12 is approximately established. At this time, the flow rate q11 of the bathtub water spouted from the out-of-water water spouting section 22 is larger than the flow rate q12 of the bathtub water spouted from the underwater water spouting section 18. Furthermore, the flow rate V11 of the bathtub water spouted from the out-of-water water spouting section 22 is higher than the flow speed V12 of the bathtub water spouted from the submersible water spouting section 18. After the start of execution of the water discharge flow rate change mode, the control device 40 maintains the rotation speed of the pump 4 constant and maintains the suction flow rate q13 constant. Considering that the flow rate q14 is supplied from the jet pump channel 144, the control device 40 controls the water flow rate q11 discharged from the water surface outlet 24 and the water discharge flow rate q12 discharged from the submersible water discharge part 18. The flow rate is set to a predetermined value. The flow rate q14 is determined according to the flow rate of the bath water jetted from the jetting section 146.

At time T1, after starting execution of the water spout flow rate change mode, the control device 40 determines that the flow rate V11 of the bathtub water spouted from the out-of-water water spouting section 22 is higher than the flow speed V12 of the bathtub water spouted from the submersible water spouting section 18. From this state, control is performed to reduce the water spouting flow rate q12 from the submersible water spouting section 18. Specifically, the control device 40 moves the adjustment member 32 into the first flow path 12 to bring the first flow path 12 side into a state where the opening degree is 0, closes the first flow path 12, and closes the first flow path 12. The amount of bath water supplied to the first channel 12 is reduced to zero, and the water discharge flow rate q12 from the submersible water discharge section 18 is decreased to zero. Note that the second flow path 114 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q11 from the water surface outlet 24 is increased to the water discharge flow rate q15 (q15=q13+q14+α). Since the water discharge flow rate q11 is increased, the flow rate q14 supplied from the jet pump channel 144 is further increased to the flow rate q14+α. That is, the control device 40 increases the proportion of the flow rate of the water spouted from the out-of-water spout 24, and further increases the flow rate V1 of the water spouted from the out-of-water spout 24 to the flow rate V14.

From time T1 to T2, the control device 40 continues spouting water from the out-of-water spout 24 at a water spouting flow rate q15. In this way, by increasing the flow rate of water spouted from the outside water spouting section 22 for a predetermined period, the flow velocity V11 of the bathtub water spouted from the outside water spouting section 22 is further increased to the flow velocity V14, and the water spouting section 22 The effect of pushing dirt floating on the water surface into the water can be further strengthened by the water discharged from the water. Therefore, dirt that was difficult to push into the water from the water surface when water was being spouted from the out-of-water spout 24 at a flow rate q11, and a relatively large amount of dirt floating on the water surface can be pushed into the water. Furthermore, the speed at which dirt is pushed into water (removal speed) can be increased, and the depth into which dirt is pushed can be increased, thereby further improving dirt removal efficiency. From time T1 to T2, the control device 40 is in a state where the water spouting flow rate q12 from the submersible water spouting section 18 is reduced to 0, that is, a state where water spouting from the submersible water spouting section 18 is temporarily stopped. The predetermined period is, for example, the time from time T1 to time T2. The time from time T1 to time T2 is set, for example, to a period of several seconds to several minutes, so that the stirring flow initially caused by the submersible water spouting section 18 is intermittently restarted before it becomes relatively weak. After time T2, a relatively strong agitation flow is generated in the water by the submersible water spouting section 18, and it is possible to efficiently suppress the stagnation of dirt in the water. By combining such a stirring flow in the water with a relatively strong pushing flow discharged from the out-of-water water discharge section 22, dirt can be more efficiently collected by the collection section 16.
Note that, as long as the predetermined period is a period determined by the control device 40, the predetermined period may continue from time T1 until the end of execution of the water discharge flow rate change mode. In other words, the water spouting flow rate change mode may be terminated by increasing the water spouting flow rate from the out-of-water water spouting section 22 only once. In this case, after time T1, the stirring flow caused by the underwater water spouting section 18 before time T1 continues relatively weakly in the bathtub, and this flow is compared with the water spouted from the water surface water spouting section 22. By combining this with a strong pushing flow, dirt can be collected in the collecting section 16.

At time T2, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and adjusts the amount of bath water supplied to the first flow path 12. and the water spouting flow rate from the submersible water spouting section 18 is increased from 0 to the water spouting flow rate q12. Since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q15 from the water surface outlet 24 is decreased to become the water discharge flow rate q11. Therefore, after time T2, while forming a forced flow by the water spouted from the water spouting section 22 outside the surface of the water, a relatively strong stirring flow in the water is generated by the submerged water spouting section 18, and the formation of stagnation of dirt in the water is efficiently prevented. can be suppressed. Further, from time T2 to time T3, the effect of pushing dirt floating on the water surface into the water by the water spouted from the water spouting section 22 outside the water surface continues to a certain degree.

At time T3, the control device 40 again moves the adjustment member 32 into the first flow path 12 to bring the opening degree of the first flow path 12 side to zero, thereby closing the first flow path 12. The amount of bath water supplied to the first channel 12 is reduced to zero, and the water discharge flow rate q12 from the submersible water discharge section 18 is decreased to zero. Note that the second flow path 14 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q11 from the water surface outlet 24 is increased to the water discharge flow rate q15. Therefore, the flow velocity V11 of the water discharged from the water outlet 24 outside the water surface is further increased to the flow velocity V14. Thereafter, from time T3 to T4, the control device 40 continues spouting water at the water spouting flow rate q13 from the water spout 24 outside the water surface.

At time T4, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and changes the water flow rate from the submersible water spouting section 18 from 0 to the water flow rate q12. increase to Therefore, the water spouting flow rate q15 from the water surface water spouting port 24 is reduced, and becomes the water spouting flow rate q11.

In this way, the control device 40 controls the adjustment member 32 to maintain the opening degree of the first channel 12 at 0 for a predetermined period of time, and reduces the water discharge flow rate q12 from the submersible water discharge section 18 to 0, The flow rate q11 of water discharged from the water outlet 24 outside the water surface is increased to the flow rate q15. In the water discharge flow rate change mode, the control device 40 repeatedly executes the control such that the adjustment member 32 is brought into a state where the opening degree of the first flow path 12 is 0 over a predetermined engine at least once, and more preferably multiple times. do. After a certain period of time has elapsed, the control device 40 ends the water discharge flow rate change mode and returns to the simultaneous water discharge mode.

Next, the water discharge flow rate change mode of the first modified example of the bathtub device 101 according to the second embodiment will be described with reference to FIGS. 11 and 13. Regarding the operation in the water discharge flow rate change mode of the first modification, explanations regarding operations common to the above-mentioned water discharge flow rate change mode will be omitted, and mainly different parts will be explained.
FIG. 13 shows the operation of the flow rate, flow velocity, and opening degree of the flow path in the branching device when the control device of the bathtub device according to the second embodiment of the present invention is executing the water discharge flow rate change mode of the first modification. This is a time chart. In FIG. 13, the vertical axis represents the flow rate, the flow velocity, and the opening degree of the flow path in the branching device, and the horizontal axis represents time. The flow rate in FIG. 13 is an example. As an example of the water spouting flow rate Q1 from the water spouting part 22 outside the water surface, water spouting flow rate q17 and water spouting flow rate q19 are shown, and as an example of the water spouting flow rate Q2 from the submersible water spouting part 18, the water spouting flow rate q16 is shown. , the water discharge flow rate q20 is shown.

When the control device 40 executes the water discharge flow rate change mode of the first modification, the control device 40 causes the pump 4 to operate so that the flow rate q13 of the bathtub water sucked from the suction port becomes constant at time T0. At time T0, the control device 40 controls the adjustment member 32 to cause the submersible water spouting section 18 to spout water at a water spouting flow rate q16. The opening degree of the adjusting member 32 at this time is larger than the opening degree of the adjusting member 32 with respect to the above-mentioned water discharge flow rate q12, and the water discharge flow rate q16 is larger than the water discharge flow rate q12. At this time, in the present embodiment, the adjustment member 32 does not adjust the opening degree on the second flow path 114 side, so the opening degree on the second flow path 114 side remains constant. Since water is spouted from the submersible water spouting section 18 at a water spouting flow rate q16, water is spouted from the water surface water spouting port 24 at a water spouting flow rate q17. The bathtub device 101 is provided with a jet pump unit 140, and the flow rate q18 is supplied from the jet pump channel 144, so that the flow rate of water discharged from the water outlet 24 outside the water surface is increased. Therefore, the relationship q13+q18=q16+q17 is approximately established. At this time, the flow velocity V15 of the bathtub water spouted from the water spouting part 22 outside the water surface is higher than the flow velocity V16 of the bathtub water spouted from the underwater water spouting part 18. Note that the water discharge flow rate q17 is smaller than the water discharge flow rate q11. In this way, the ratio and flow rate of the water discharge flow rate can be changed.

At time T1, after starting execution of the water spouting flow rate change mode, the control device 40 determines that the flow rate V15 of the bathtub water spouted from the out-of-water water spouting section 22 is higher than the flow speed V16 of the bathtub water spouted from the submersible water spouting section 18. From this state, control is performed to reduce the water spouting flow rate q16 from the submersible water spouting section 18. Specifically, the control device 40 moves the adjustment member 32 so as to close about two-thirds of the area in the first flow path 12 to bring the opening degree to about one-third. The channel 12 is brought into a small opening state, the amount of bath water supplied to the first channel 12 is reduced, and the water discharge flow rate q16 from the submersible water spouting section 18 is reduced to the water discharge flow rate q20. The flow velocity is also reduced from flow velocity V16 to flow velocity V17 in accordance with the water discharge flow rate. The water discharge flow rate q20 is, for example, about one third of the water discharge flow rate q16. Note that the second flow path 114 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q13 constant, the flow rate of water discharged from the water surface outlet 24 is increased from the water discharge flow rate q17 to the water discharge flow rate q19. The water discharge flow rate is q19 (q19=q13-q20+q18+α). That is, the control device 40 increases the proportion of the flow rate of the water discharged from the water surface outlet 24, and further increases the flow rate of water discharged from the surface water outlet 24 from the flow rate V15 to the flow rate V18. Note that, also at this time, the flow velocity V18 of the bathtub water spouted from the out-of-water water spouting section 22 is higher than the flow velocity V17 of the bathtub water spouted from the submersible water spouting section 18.

From time T1 to T2, the control device 40 continues spouting water at a water spouting flow rate q19 (flow rate V18) from the water spouting port 24 outside the water surface. In this way, by increasing the flow rate of water spouted from the outside water spouting section 22 for a predetermined period, the flow rate of the bathtub water spouted from the outside water spouting section 22 is increased to the flow velocity V18, and the water spouting from the outside water spouting section 22 is increased. This can further strengthen the effect of pushing dirt floating on the water surface into the water.

At time T2, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12 to a substantially fully open state, and the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12 to a substantially fully open state, thereby reducing the temperature of the bathtub supplied to the first flow path 12. The amount of water is increased, and the flow rate of water discharged from the submersible water discharge section 18 is increased from the water discharge flow rate q20 (flow velocity V17) to the water discharge flow rate q16 (flow velocity V16). Since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q19 (flow velocity V18) from the water surface outlet 24 is reduced to become the water discharge flow rate q17 (flow velocity V15). Therefore, after time T2, the dirt pushed in by the relatively high pushing flow of the flow velocity V15 discharged from the water surface outside the water spouting section 22 is again submerged into the water by the relatively strong underwater stirring flow from the submersible water spouting section 18. Dirt can be agitated while efficiently suppressing dirt stagnation.

At time T3, the control device 40 again moves the adjustment member 32 so as to close about two-thirds of the area inside the first flow path 12, and brings the first flow path 12 into a small opening state, so that the The water spouting flow rate q16 (flow rate V16) from the water spouting section 18 is reduced to the water spouting flow rate q20 (flow rate V17). At this time, since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q17 (flow velocity V15) from the water surface outlet 24 is increased to the water discharge flow rate q19 (flow velocity V18). Thereafter, the same process is repeated. In the water discharge flow rate change mode of the first modification, the control device 40 controls the adjustment member 32 to reduce the opening degree in the first flow path 12 over a predetermined engine at least once. More preferably, the process is repeated multiple times. When a certain period of time has elapsed, the control device 40 ends execution of the water spouting flow rate change mode of the first modification and returns to the simultaneous water spouting mode.

Next, with reference to FIGS. 11 and 14, a water discharge flow rate change mode of a second modified example of the bathtub device 101 according to the second embodiment will be described. Regarding the operation in the water discharge flow rate change mode of the second modification, explanations regarding operations common to those in the water discharge flow rate change mode described above will be omitted, and mainly different parts will be explained.
FIG. 14 shows the operation of the flow rate, flow velocity, and opening degree of the flow path in the branching device when the control device of the bathtub device according to the second embodiment of the present invention is executing the water discharge flow rate change mode of the second modified example. This is a time chart. In FIG. 14, the vertical axis represents the flow rate, the flow velocity, and the opening degree of the channel in the branching device, and the horizontal axis represents time. The flow rate in FIG. 14 is an example, and as an example of the water spouting flow rate Q1 from the water spouting part 22 outside the water surface, a water spouting flow rate q11 and a water spouting flow rate q15 are shown, and as an example of the water spouting flow rate Q2 from the submersible water spouting part 18, a water spouting flow rate q12 is shown. , a water discharge flow rate of 0 is shown.

When the control device 40 executes the discharge water flow rate change mode of the second modification, the control device 40 causes the pump 4 to operate so that the flow rate q13 of the bathtub water sucked from the suction port becomes constant at time T10. After starting execution of the water discharge flow rate change mode of the second modification, the control device 40 causes the adjustment member 32 to set the opening degree of the first flow path 12 to 0, closes the first flow path 12, and closes the first flow path 12. The flow rate of water discharged from 18 is set to 0. Note that the second flow path 114 side of the branching device 30 remains open. Therefore, the control device 40 makes the water discharge flow rate from the water surface water outlet 24 equal to the water discharge flow rate q15 (q15=q13+q14+α) and the flow rate V14. In this way, while executing the water spouting flow rate change mode of the second modification, only water spouting from the out-of-water spout 24 can be temporarily performed.

From time T10 to T11, the control device 40 continues spouting water at a water spouting flow rate q15 (flow rate V14) from the water spouting port 24 outside the water surface. In this way, by increasing the flow rate of water spouted from the outside water spouting section 22 for a predetermined period, the flow velocity of the bathtub water spouted from the outside water spouting section 22 is increased to V14, and the flow rate from the outside water spouting section 22 is increased. The effect of pushing dirt floating on the water surface into the water can be further strengthened by the water discharge. Therefore, dirt that was difficult to push into the water from the water surface when water was being spouted simultaneously from the out-of-water spout 24 and the submerged water spout part 18, and a relatively large amount of dirt floating on the water surface can be pushed into the water. Furthermore, the speed at which dirt is pushed into water (removal speed) can be increased, and the depth into which dirt is pushed can be increased, thereby further improving dirt removal efficiency. From time T10 to T11, the control device 40 is in a state where the flow rate of water spouted from the submersible water spouting section 18 is reduced to 0, that is, a state where water spouting from the submersible water spouting section 18 is temporarily stopped. The predetermined period is, for example, the time from time T10 to time T11. The time from time T10 to time T11 can be set longer than the time from time T11 to time T12, which will be described later. The time from time T10 to time T11 may be set longer than the time from time T1 to time T2 described above. For example, the time from time T10 to time T11 can be set to be twice or more the time from time T1 to time T2. The time from time T10 to time T11 is set to, for example, a period of several seconds to several tens of minutes.

At time T11, the control device 40 moves the adjustment member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and changes the water flow rate from the submersible water spouting section 18 from 0 to the water flow rate q12. (Flow rate V12). Since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q15 (flow velocity V14) from the water surface outlet 24 is reduced to become the water discharge flow rate q11 (flow velocity V11). Therefore, after time T11, while forming a push-in flow by the water spouted from the water spouting section 22 outside the water surface, a relatively strong agitation flow in the water is generated by the submerged water spouting section 18, and the formation of stagnation of dirt in the water is efficiently prevented. can be suppressed. Further, from time T11 to time T12, the effect of pushing dirt floating on the water surface into the water by the water spouted from the water spouting section 22 outside the water surface continues to a certain degree.

At time T12, the control device 40 again moves the adjustment member 32 into the first flow path 12 to bring the opening degree to 0, thereby closing the first flow path 12 and discharging water from the submersible water spouting section 18. The flow rate q12 is decreased to 0. Note that the second flow path 114 side of the branching device 30 remains open. At this time, since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q11 from the water surface outlet 24 is increased to the water discharge flow rate q15. Therefore, the flow rate of water discharged from the water outlet 24 outside the water surface is increased from the flow rate V11 to the flow rate V14. Thereafter, after time T12, the control device 40 continues spouting water at the water spouting flow rate q15 from the water spouting port 24 outside the water surface. In the water discharge flow rate change mode of the second modification, the control device 40 repeatedly controls the adjustment member 32 in a predetermined engine from time T10 to time T12 at least once, more preferably multiple times. When a certain period of time has elapsed, the control device 40 ends execution of the water spouting flow rate change mode of the second modification and returns to the simultaneous water spouting mode.

As described above, the control device 40 of the bathtub device 101 according to the present embodiment can execute the simultaneous water spouting mode, the water spouting flow rate change mode, and the like. Therefore, in the bathtub device 101 according to the second embodiment, as in the case of the bathtub device 1 according to the first embodiment, the landing position of the bathtub water discharged from the water surface outside the water discharge section 22 on the water surface in the bathtub 2 is determined. Since it is subject to change, the explanation will be omitted.

According to the bathtub device 101 according to the second embodiment of the present invention described above, the flow rate of the bathtub water spouted from the out-of-water water spouting section 22 is made larger than the flow speed of the bathtub water spouted from the submerged water spouting section 18. , it is configured such that water is simultaneously spouted from the water spouting section 22 outside the surface of the water and the water spouting section 18 under the water. As a result, it is possible to change the pump 4 to a larger one to increase the circulation flow rate and increase the amount of dirt collected. The dirt in the water in the bathtub 2 and the dirt on the water surface of the bathtub 2 can be collected without providing separate collecting devices. Moreover, according to the above-described configuration, dirt floating on the water surface that is difficult to be drawn into the water can be easily pushed into the water by the relatively high-speed water flow discharged from the water discharge section 22 outside the water surface. Furthermore, the dirt in the water in the bathtub 2 is agitated by the relatively low-speed water flow discharged from the submersible water spouting part 18, and it is possible to suppress the dirt from stagnating in the water, and by stirring by the relatively low-speed water flow, The formation of a flow that sucks dirt from the suction port 8 into the suction channel 6 can be made less likely to be obstructed. Therefore, the dirt floating on the water surface can be pushed into the water, and the stagnation of dirt in the water can be suppressed. Furthermore, efficient suction into the suction channel 6 can be realized, and the collection part 16 in the suction channel 6 can remove dirt from the bathtub. Also, the efficiency of collecting dirt on the water surface of the bathtub 2 can be increased.

Further, according to the bathtub device 101 according to the second embodiment of the present invention, due to the jet pump action of the jet pump unit 140, the flow rate of the bathtub water spouted from the out-of-water water spouting section 22 is reduced from the amount of water spouted from the submerged water spouting section 18. The flow rate of the bathtub water spouted from the out-of-water water spouting section 22 is made larger than the flow rate of the bathtub water spouted from the submersible water spouting section 18. Further, since the jet pump unit 140 can increase the flow rate of the bathtub water spouted from the out-of-water water spouting section 22, even if the pump 4 is made smaller, the bathtub water spouted from the out-of-water water spouting section 22 can be increased. The water spouting flow rate can be made larger than the water spouting flow rate of bathtub water spouted from the submersible water spouting section 18. This makes it possible to further downsize the pump 4, increasing the degree of freedom in arranging the pump 4 between the bathtub 2 and the wall surface W or the casing 21, etc., and reducing the area that should be secured as the pump arrangement space. Can be made smaller.

The form for carrying out the present invention is not limited to the above, and other modifications may be applied. For example, the bathtub applied to the first embodiment and/or the second embodiment of the present invention is not limited to the bathtub 2 that is generally formed in a square shape such as a rectangle when viewed from above, but also bathtubs of other shapes, such as an oval shape. It is also possible to change the bathtub to a round bathtub, a bow-shaped moon-shaped bathtub, a circular bathtub, etc. For example, as shown in FIG. 15, the bathtub can be changed to a bow-shaped moon-shaped bathtub 202. As shown in FIG. 15, when viewed from above, the bathtub 202 is divided into two halves in the longitudinal direction, and a first area A1 and a second area A2 are defined. Since the bathtub 202 has a bowed moon shape when viewed from above, the longitudinal direction L is a direction along the side 202f of the bowed portion (the left-right direction in the drawing). The first area A1 is an area of the bathtub 202 on one side with respect to a center line B that bisects the bathtub 202 in the longitudinal direction L (the area on the left side of the paper in FIG. 15). The second area A2 is the area of the bathtub 202 on the other side with respect to the center line B that bisects the bathtub 202 in the longitudinal direction (the area on the right side of the paper in FIG. 15). In the bathtub 202, the submersible water spouting section 18 and the out-of-water water spouting section 22 are provided in the second area A2, and the suction port 8 is provided in the first area A1 on the opposite side to the center line B. In addition, when the underwater water spouting part 18 is provided in the first area A1, the suction port 8 is provided in the second area A2 on the opposite side to the center line B.

Furthermore, for example, the bathtub device according to the first embodiment and/or the second embodiment of the present invention may include a flow rate control unit that controls at least the flow rate of water discharged from the submersible water discharge unit 18 instead of the branching device 30. good. The flow rate control unit is, for example, a solenoid valve provided on the first flow path 12, but may be another flow rate control device that can adjust the flow rate of bath water supplied to the first flow path 12. . The flow rate control unit performs control to reduce the flow rate of water discharged from the submersible water discharge unit 18 over a predetermined period while the flow rate of bath water sucked in from the suction port 8 is constant. The flow rate control unit is electrically connected to the control device 40, and the flow rate control unit is controlled by the control device 40 to control the simultaneous water spouting mode, the water spouting flow rate change mode, the water spouting flow rate changing mode of the first modification, and the water spouting mode of the second modification. Flow rate change mode etc. can be executed.

1 Bathtub device 2 Bathtub 4 Pump 6 Suction flow path 8 Suction port 10 Pump downstream flow path 12 First flow path 14 Second flow path 16 Collection section 18 Submersible water spout 20 Submersible water spout 22 Water surface outside water surface 24 Outside water surface Spout 28 Squeezing section 30 Branching device 30a Channel 32 Adjustment member 34 Adjustment member control section 101 Bathtub device 102 Bathtub 114 Second flow path 140 Jet pump unit 142 Jet pump water storage section 142b Top surface 146 Injection section 202 Bathtub

Claims (9)

A bathtub device installed in a bathtub,
a pump that sucks bathtub water in the bathtub and supplies this bathtub water to the downstream side;
a suction channel forming a suction port in the bathtub and extending from the suction port to the pump;
a pump downstream flow path extending downstream from the pump;
a first flow path branched from the pump downstream flow path;
a second flow path branched from the pump downstream flow path;
a submersible spout unit forming a submersible spout in the bathtub, and spouting bathtub water supplied from the first channel into water in the bathtub from the submersible spout;
an out-of-water spout unit forming an out-of-water spout above the water surface of the bathtub, and discharging bathtub water supplied from the second channel into the bathtub from the out-of-water spout;
a dirt collecting section that is provided on the suction flow path and that collects dirt in the bathtub water passing through;
Water is simultaneously spouted from the above-mentioned out-of-water water spouting section and the above-mentioned submersible water spouting section such that the flow rate of the bathtub water spouted from the above-mentioned above-mentioned out-of-water water spouting section is greater than the flow rate of the bathtub water spouted from the above-mentioned submersible water spouting section. A bathtub device configured as follows. The flow path resistance of the first flow path is configured to be larger than the flow path resistance of the second flow path, and the water discharge flow rate Q1 at at least one above-mentioned out-of-water outlet of the above-mentioned out-of-water outlet is configured to be The bathtub device according to claim 1, wherein a value divided by a water spout cross-sectional area S1 is larger than a value obtained by dividing a water spout flow rate Q2 in at least one submersible spout of the submersible water spout by a water spout cross-sectional area S2. 3. The bathtub device according to claim 2, wherein the first flow path includes a constriction section that narrows a cross section of the flow path upstream of the underwater spout. Further, a branching device is provided to branch the first flow path and the second flow path from the downstream flow path of the pump,
The branching device has an opening area opened to the second flow path side and/or an opening area opened to the second flow path side such that an opening area opened to the second flow path side is larger than an opening area opened to the first flow path side in the branch portion. an adjustment member that adjusts the opening area opening on the first flow path side;
The bathtub device according to claim 2 or 3, further comprising an adjustment member control section that controls the adjustment member. Further, at least a flow rate control unit that controls the flow rate of water discharged from the underwater water discharge unit,
The flow rate control unit performs control to reduce the flow rate of water discharged from the submersible water discharge unit over a predetermined period while the pump is operated so that the flow rate of bath water sucked from the suction port is constant. , The bathtub device according to any one of claims 1 to 3. The adjusting member of the branching device reduces the flow rate of water discharged from the submersible water discharge portion over a predetermined period while the pump is operated so that the flow rate of bathtub water sucked from the suction port is constant. The bathtub device according to claim 4, which performs control. The bathtub device according to any one of claims 1 to 6, wherein a landing position of the bathtub water discharged from the water surface outside the water surface on the water surface in the bathtub is changed. When viewed from above, the bathtub is defined with a first region and a second region that bisect the bathtub into two in the longitudinal direction,
When the underwater water spouting part is provided in the first area, the suction port is provided in the second area, and when the underwater water spouting part is provided in the second area, the suction port is provided in the second area. The bathtub device according to any one of claims 1 to 7, which is provided in one area. Furthermore, a jet pump unit provided on the second flow path is provided,
The above jet pump unit is
a jet pump water storage section in which bath water drawn in by the jet pump action is stored;
a jet pump channel that connects the bathtub and the jet pump water reservoir and forms a channel that can introduce bathtub water into the jet pump water reservoir;
an injection section that has an opening area smaller than a passage cross-sectional area of the second flow path on the upstream side of the jet pump water storage section, and accelerates the supplied bathtub water and injects it into the jet pump water storage section; , comprising;
The second flow path is formed such that an opening area of the second flow path extending downstream of the jet pump water storage section is larger than an opening area of the injection section,
The bathtub device according to any one of claims 1 to 8, wherein the dirt collecting section is provided on the suction flow path or the jet pump flow path.

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