JP2022023335A - Bathtub apparatus - Google Patents

Abstract

To provide a bathtub apparatus which can capture stains in water in a bathtub and on a water surface of the bathtub.SOLUTION: A bathtub apparatus 1 includes: a pump 4; a suction flow passage 6 which forms a suction port in a bathtub; a pump downstream side flow passage 10; a first flow passage 12; a second flow passage 14; a water discharge part 18 in water for forming a water discharge port in the bathtub; a water discharge part 22 outside a water surface which forms a water discharge port outside a water surface above a water surface of the bathtub and discharges bathtub water supplied from the second flow passage 14 to the inside of the bathtub from the water discharge port outside a water surface; and a stain capturing part 16 which is provided on the suction flow passage and captures the passing stains in the bathtub water. The water is simultaneously discharged from the water discharge part outside a water surface and the water discharge part in water so that a flow rate of the bathtub water discharged from the water discharge part 22 outside a water surface is greater than a flow rate of the bathtub water discharged from the water discharge part 18 in water.SELECTED DRAWING: Figure 2

Description

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

Conventionally, for example, as described in Patent Document 1, in order to remove stains (for example, hair, dirt, etc.) existing in the bathtub water in the bathtub after bathing, the bathtub water in the bathtub is removed from the bathtub. There is known a bath water purifying device that takes in, removes dirt from the taken-in bathtub water, and returns it to the inside of the bathtub.

Further, for example, as described in Patent Document 2, the hair is provided so as to float on the surface of the bathtub after bathing by the user, and the hair floating on the surface of the bathtub after bathing. A bath stain remover that removes stains such as scale is known.

Japanese Unexamined Patent Publication No. 2017-127500 Japanese Unexamined Patent Publication No. 2018-68416

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

Further, the bath decontaminating device as described in Patent Document 2 is provided in a state of floating on the hot water surface due to the buoyancy of the air chamber, and the dirt floating on the hot water surface is collected and purified. Therefore, according to such a bath cleaner, there is a problem that it is difficult to collect dirt in the bathtub water. In addition, there is also a problem that it takes time and effort for the user who uses the bathtub to arrange the bath decontamination device in a state of floating on the surface of the hot water and then operate the bath decontamination device.

If both the bath water purifier of Patent Document 1 and the bath stain remover of Patent Document 2 are provided in the bathtub, the water surface in the bathtub and the dirt in the water can be collected. However, arranging both devices in the bathtub has a problem that it is very costly and takes time and effort for installation and management.

Further, in the bath water purifier of Patent Document 1 and the bath decontamination device of Patent Document 2, when the suction flow rate of bathtub water is to be increased in order to improve the efficiency of collecting dirt, the bathtub water is used. It becomes necessary to increase the size of the pump for sucking the water, and it becomes difficult to secure a space for accommodating the increased size pump.

Therefore, the present invention has been made to solve the problems and problems of the above-mentioned prior art, such as changing the pump to a large one, a device for collecting dirt in the water of the bathtub, and the water surface of the bathtub. It is an object of the present invention to provide a bathtub device capable of collecting dirt in the water of a bathtub and on the water surface of the bathtub without providing a device for collecting dirt.

In order to achieve the above object, the present invention is a bathtub device provided in a bathtub, in which a pump for sucking bathtub water in the bathtub and supplying the bathtub water to the downstream side and a suction port in the bathtub are provided. 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 branched from the pump downstream flow path, and the pump. An underwater spout is formed in the second flow path branched from the downstream flow path and the bathtub, and the bathtub water supplied from the first flow path is discharged from the underwater spout into the water in the bathtub. An out-of-water spouting portion forms an out-of-water spout above the water surface of the bathtub, and the bathtub water supplied from the second flow path is discharged from the out-of-water spout into the bathtub. A part and a dirt collecting part provided on the suction flow path and collecting dirt in the bathtub water passing through, and the flow velocity of the bathtub water discharged from the out-of-water water discharge part is the water discharge part. It is characterized in that the water is discharged from the out-of-water water discharge unit and the water discharge unit at the same time so as to be larger than the flow velocity of the bathtub water discharged from the water.
According to one embodiment of the present invention configured as described above, the flow velocity of the bathtub water discharged from the out-of-water spouting portion is larger than the flow velocity of the bathtub water discharged from the water spouting portion. It is configured so that water is discharged from the out-of-water spouting portion and the underwater spouting portion at the same time. As a result, the pump can be changed to a larger one so as to increase the circulation flow rate and increase the amount of dirt collected, and a device for collecting dirt in the water of the bathtub and a device for collecting dirt on the water surface of the bathtub. It is possible to collect dirt in the water of the bathtub and the water surface of the bathtub without providing each of. Further, according to the above-described configuration, dirt floating on the water surface, which is difficult to be drawn into the water, can be easily pushed into the water by a relatively high-speed water flow discharged from the water discharge portion outside the water surface. Further, the dirt in the water of the bathtub can be agitated by a relatively low speed water flow discharged from the water spouting part to suppress the formation of stagnation of the dirt in the water, and the dirt can be removed by stirring by the relatively low speed water flow. It is possible to prevent the formation of a flow of suction from the suction port into the suction flow path from being hindered. Therefore, the dirt floating on the water surface can be pushed into the water, the stagnation of the dirt in the water can be suppressed, and the efficient suction to the suction flow path can be realized. It is possible to increase 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 out-of-water discharge portions is out of the water. The value obtained by dividing the spout flow rate Q1 at the water outlet by the spout cross-sectional area S1 is larger than the value obtained by dividing the spout flow rate Q2 at at least one of the underwater spout portions of the underwater spout portion by the spout cross-sectional area S2.
According to one 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 out-of-water discharge water is discharged. The value obtained by dividing the water discharge flow rate Q1 at at least one out-of-water spout of the portion by the spout cross-sectional area S1 is the value obtained by dividing the spout flow rate Q2 at at least one underwater spout of the underwater spout portion by the spout cross-sectional area S2. Greater than the value divided by. As a result, the flow velocity of the bathtub water discharged from at least one out-of-water spout of the out-of-water spouting portion becomes larger than the flow velocity of the bathtub water discharged from at least one underwater spouting port of the underwater spouting portion. In addition, water can be discharged from the out-of-water spouting portion and the underwater spouting portion at the same time. Therefore, the dirt floating on the water surface can be pushed into the water, the stagnation of the dirt in the water can be suppressed, the efficient suction into the suction flow path can be realized, and the dirt in the bathtub water by the dirt collecting portion in the suction flow path can be realized. The efficiency of collection can be increased. Further, not only when there is one out-of-water spout and one underwater spout, but also when there are a plurality of out-of-water spouts and / or underwater spouts, at least one of the out-of-water spouts is out of the water. From the out-of-water spouting part and the underwater spouting part so that the flow velocity of the bathtub water discharged from the spout becomes larger than the flow velocity of the bathtub water discharged from at least one underwater spouting part of the underwater spouting part. Water can be discharged at the same time. Therefore, even when there are a plurality of out-of-water spouts and / or underwater spouts, it is relatively easy to push the dirt floating on the water surface into the water and suppress the stagnation of the dirt in the water, and further, the suction flow. Efficient suction to the road can be realized, and the efficiency of collecting dirt in the bathtub water by the dirt collecting portion in the suction flow path can be improved.

In the present invention, preferably, the first flow path includes a throttle portion that narrows the cross section of the flow path in the flow path on the upstream side of the underwater spout.
According to one embodiment of the present invention configured as described above, the first flow path includes a throttle portion for narrowing the cross section of the flow path in the flow path on the upstream side of the underwater spout. As a result, the flow rate of the bathtub water from the first flow path to the underwater spout can be reduced by the throttle portion of the first flow path, and the flow velocity of the bathtub water discharged from the underwater spout can be reduced. Further, due to the simple configuration that the first flow path is provided with a throttle portion, the flow path resistance of the first flow path is made larger than the flow path resistance of the second flow path, and the bathtub from the first flow path to the water spout. The flow rate of water is made smaller than the flow rate of the bathtub water from the second flow path to the out-of-water spout, and the flow velocity of the bathtub water discharged from the out-of-water spout is the flow velocity of the bathtub water discharged from the underwater spout. It is relatively easy to realize a relationship that is larger than that.

In the present invention, it is preferable that the branching device is further provided so as to branch the first flow path and the second flow path from the downstream side flow path of the pump, and the branching device is the first in the branching portion. 2 Adjust the opening area opened on the second flow path side and / or the opening area opened on the first flow path side so that the opening area opened on the first flow path side is larger than the opening area opened on the first flow path side. It is provided with an adjusting member for controlling the adjusting member and an adjusting member control unit for controlling the adjusting member.
According to one embodiment of the present invention configured as described above, in the branching device, the opening area opened on the second flow path side in the branch portion is larger than the opening area opened on the first flow path side by the adjusting member. 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 underwater spout, and the flow rate of the bathtub water discharged from the out-of-water spout. However, it is relatively easy to realize a relationship in which the flow velocity is larger than the flow velocity of the bathtub water discharged from the water discharge portion. Further, by providing a controllable adjusting member for the branching device, the above relationship can be realized relatively easily, and without adding another device or improving another configuration, for example, an out-of-water water discharge unit. It is also possible to realize a water discharge pattern of only water discharged from the water, a water discharge pattern of only water discharged from the water discharge portion, and the like.

The present invention preferably further includes at least a flow rate control unit that controls the flow rate of water discharged from the water discharge unit, so that the flow rate control unit keeps the flow rate of bathtub water sucked from the suction port constant. While the pump is operating, control is performed to reduce the flow rate of water discharged from the water discharge unit for a predetermined period.
According to one embodiment of the present invention configured as described above, the flow rate control unit discharges water from the water discharge unit for a predetermined period in a state where the flow rate of suction of bathtub water from the suction port is constant. Control to reduce the flow rate. As a result, while the flow rate of bathtub water suction from the suction port is constant, the flow rate of water discharged from the water discharge section is reduced over a predetermined period, and the flow rate of water discharged from the out-of-water discharge section is increased during this predetermined period. , Increase the flow velocity of the bathtub water discharged from the out-of-water spouting part. Therefore, it is possible to further enhance the effect of pushing the dirt floating on the water surface into the water by the water discharged from the water discharge portion outside the water surface.

In the present invention, preferably, the adjusting member of the branching device operates the pump so that the flow rate of sucking bathtub water from the suction port becomes constant, and the underwater spouting unit is used for a predetermined period of time. Control is performed to reduce the flow rate of water discharged from the water.
According to one embodiment of the present invention configured as described above, the adjusting member of the branching device is the underwater spouting unit for a predetermined period in a state where the flow rate of sucking bathtub water from the suction port is constant. Control is performed to reduce the flow rate of water discharged from the water. As a result, while the flow rate of bathtub water suction from the suction port is constant, the flow rate of water discharged from the water discharge section is reduced over a predetermined period, and the flow rate of water discharged from the out-of-water discharge section is increased during this predetermined period. , Increase the flow velocity of the bathtub water discharged from the out-of-water spouting part. Therefore, it is possible to further enhance the effect of pushing the dirt floating on the water surface into the water by the water discharged from the water discharge portion outside the water surface.

The present invention is preferably configured such that the landing position of the bathtub water discharged from the out-of-water spouting portion on the water surface in the bathtub is changed.
According to one embodiment of the present invention configured in this way, the landing position of the bathtub water discharged from the out-of-water spouting portion on the water surface in the bathtub is configured to be changed. As a result, the landing position of the bathtub water discharged from the out-of-water spouting portion on the water surface in the bathtub can be changed in a wider range than the unchanged landing region when the landing position does not change. Therefore, the dirt floating on the water surface can be pushed into the water in a wider area by the water discharged from the water discharge portion outside the water surface.

In the present invention, preferably, from a top view, the bathtub is defined as a first region and a second region obtained by bisecting the bathtub in the longitudinal direction, and the underwater spouting portion is provided in the first region. In this case, the suction port is provided in the second region, and when the underwater spouting portion is provided in the second region, the suction port is provided in the first region.
According to one embodiment of the present invention configured as described above, when the underwater spouting portion is provided in the first region, the suction port is provided in the second region and the underwater spouting portion is the first region. When provided in two regions, the suction port is provided in the first region. As a result, the underwater spouting portion and the suction port are arranged apart from each other in the first region of the bathtub bisected in the longitudinal direction and the second region opposite to the first region. Therefore, it is possible that the water flow due to the water spouting from the water spouting portion does not hinder the suction of the bathtub water from the suction port.

The present invention preferably further includes a jet pump unit provided on the second flow path, wherein the jet pump unit includes a jet pump water storage unit in which bath water drawn by the jet pump action is stored, and the jet pump water storage unit. A jet pump flow path that connects the bathtub and the jet pump water storage unit to form a flow path that allows the bath water to be introduced into the jet pump water storage unit, and the second jet pump water storage unit on the upstream side of the jet pump water storage unit. It has an opening area smaller than the cross-sectional area of the water passage of the flow path, and includes an injection section that accelerates the supplied bath water and injects it into the jet pump water storage section, and the second flow path is the jet. 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 on the suction flow path or the jet pump flow. It is installed on the street.
According to one embodiment of the present invention configured as described above, the flow rate of the bath water discharged from the out-of-water spouting portion by the jet pump action of the jet pump unit is the bath water discharged from the underwater spouting portion. The flow rate of the tub water discharged from the out-of-water discharge section is made larger than the flow rate of the tub water discharged from the water discharge section. Further, since the jet pump unit can increase the flow rate of the bathtub water discharged from the out-of-water discharge section, even if the pump is made smaller, the flow rate of the bathtub water discharged from the out-of-water discharge section can be increased. , It can be larger than the flow rate of bathtub water discharged from the water discharge part. As a result, the pump can be further miniaturized, the degree of freedom in arranging the pump between the bathtub and the wall, the casing, or the like can be improved, and the area to be secured as the pump arranging space can be miniaturized.

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

It is a perspective view which shows schematic structure of the bathtub apparatus by 1st Embodiment of this invention. It is a side view which shows schematic structure of the bathtub apparatus by 1st Embodiment of this invention. It is a top view which shows schematic structure of the bathtub apparatus by 1st Embodiment of this invention. It is a figure which shows schematic structure of the branching apparatus of the bathtub apparatus according to 1st Embodiment of this invention. It is a perspective view schematically showing the out-of-water spout of the out-of-water spout part of the bathtub apparatus according to 1st Embodiment of this invention. It is a perspective view schematically showing the underwater spout of the underwater spout part of the bathtub apparatus according to 1st Embodiment of this invention. It is a time chart which shows the operation of the flow rate, the flow velocity, and the opening degree of the flow path in a branching device, when the control device of the bathing apparatus according to 1st Embodiment of this invention is executing a discharge water flow rate change mode. 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. 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 second modification. be. It is a figure explaining how the landing position of the bathtub water discharged from the water discharge part outside the water surface to the water surface in the bathtub is changed in the bathtub apparatus of FIG. It is a side view which shows schematic structure of the bathtub apparatus by 2nd Embodiment of this invention. It is a time chart which shows the operation of the flow rate, the flow velocity, and the opening degree of the flow path in a branching device when the control device of the bathing apparatus according to the 2nd Embodiment of this invention is executing a discharge water flow rate change mode. 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 second embodiment of the present invention is executing the water discharge flow rate change mode of the first modification. be. 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 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 apparatus of 1st Embodiment and / or 2nd Embodiment of this invention is applied.

Hereinafter, the bathtub device according to the 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 the 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, the bathtub device 1 according to the first embodiment of the present invention is a bathtub device provided in a bathhouse, a bathhouse, a bathroom, or the like in a facility, a home, or the like.
The bathtub device 1 according to the first embodiment of the present invention is a bathtub device provided in a bathtub 2 for storing bathtub water. The bathtub device 1 may include a bathtub 2 for storing bathtub water. Here, the "bathtub water" is hot water or water stored in the bathtub 2. The bath water is set to, for example, a bathable temperature, for example, 40 degrees. The water supply device of the bathtub device 1 supplies hot water or water whose temperature has been adjusted to the temperature set by the user in the operation unit 26 to the bathtub 2 as bathtub water. Temperature-controlled hot water or water in an external facility may be supplied to the bathtub by a water supply device. Hot water or water may be supplied to the bathtub 2 without temperature control in a water supply device or an external facility, and the temperature may be controlled by the user.

The bathtub device 1 according to the first embodiment of the present invention is a pump 4 that sucks the bathtub water in the bathtub 2 and supplies the bathtub water to the downstream side, and a suction flow path 6, wherein the suction flow path 6 is the bathtub 2. A suction flow path 6 extending from the suction port 8 to the pump 4, a pump downstream flow path 10 extending downstream from the pump 4, and a second branch from the pump downstream flow path 10 are formed in the suction port 8. 1 flow path 12, a second flow path 14 branched from the downstream flow path 10 of the pump, and a dirt collection unit provided on the suction flow path 6 and collecting dirt in the bathtub water passing through. It has a pumping unit 16.

In the present embodiment, the bathtub 2 is a square bathtub 2 having a relatively small size such that an adult user (bather) can take a bath by himself, but the bathtub 2 has such a size and Not only the shape but also a bathtub of a relatively large size that can be accommodated by multiple people in a bathing facility or a nursing facility, for example, and further, a shape having a polygonal shape, a round shape, a bowed moon shape, and a curved shape. It may have other shapes such as. Further, 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. When the bathtub 2 is a standard bathtub for an adult user (bathing person) to take a bath by himself, for example, a unit bath for home use, the user's back and head come closer to the short side. Assuming that the user sits down and takes a bath in this way, a spouting part or the like, which will be described later, is arranged on the short side. The user sits and bathes so that the user's body and legs extend along the long side extending in the longitudinal direction of the bathtub 2. The bathtub 2 depends on the size of the user's body, but is, for example, a state in which the user is sitting, a state in which the upper body is tilted to the back side, a state in which the upper body is tilted to the back side, or a state in which the user is lying down. It is a bathtub that allows you to take a bath with your upper body tilted greatly toward your back and lying on your back.

The bathtub 2 has a bottom 2a that is in contact with the buttocks or feet of the user who is taking a bath, and a vertical wall 2b that is formed so as to rise vertically from the bottom 2a and is often in contact with the back of the user who is taking a bath. It is provided with 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 position relatively close to the upper body of the user (bath person) who is taking a bath, for example, the head, the neck, or the shoulder. For example, the upper end 2c is so high that the bathing user can sit with his buttocks on the bottom 2a and the back of his head rests on the upper end 2c in a relaxed state. It is formed in the occipital 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, a first region A1 and a second region A2, which are bisected bathtubs 2 in the longitudinal direction, are defined in a top view. The first region A1 is a region of the bathtub 2 on one side of the center line B that bisects the bathtub 2 in the longitudinal direction (the region on the left side of the paper in FIG. 3). The second region A2 is a region of the bathtub 2 on the opposite side of the center line B that bisects the bathtub 2 in the longitudinal direction (the region on the right side of the paper in FIG. 3). In the bathtub 2, the underwater water discharge unit 18 and the out-of-water water discharge unit 22, which will be described later, are provided in the second region A2, and the suction port 8 is provided in the first region A1 on the opposite side of the center line B. When the underwater spouting portion 18 is provided in the first region A1, the suction port 8 is provided in the second region A2 on the opposite side of the center line B.

It should be noted that the bathtub 2 is supplied with a predetermined amount or an arbitrary amount of water such as bathtub water whose temperature has been adjusted or has not been adjusted based on the operation of the operation unit 26 of the user. 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 integrally arranged from the user's point of view in the bathroom, and the casing and the equipment of the bathtub device 1 are not exposed to the user side. It is stored in 21. Therefore, it is possible to protect the internal electrical parts and the like (protection such as preventing water from splashing) while maintaining the aesthetic appearance of the entire bathtub device 1. The pump 4, the suction flow path 6, the pump downstream side flow path 10, the first flow path 12, and the second flow path 14 are very limited spaces between the casing 21 (or the wall surface W of the bathroom) and the bathtub 2. Is placed in.

The pump 4 can suck the bathtub water in the bathtub 2 and supply the bathtub water to the downstream side. The pump 4 is a pump having a function of applying pressure to the sucked bath water and pumping it. The pump 4 sucks the bathtub water in the bathtub 2 and pumps the bathtub water to the downstream side with the rotation of the impeller (not shown) directly connected to the electrically driven electric motor (not shown). .. The pump 4 is arranged near the lateral end portion on the side where the out-of-water discharge portion 22 is arranged, which is outside the center in the left-right direction of the bathtub 2. The pump 4 is provided below the bathtub 2 and inside the casing 21 (or inside the wall surface W). In such a space between the casing 21 (or the wall surface W) and the bathtub 2, since the pump 4, each flow path, and the like are arranged in a relatively narrow space, the installation position and size of the pump 4 ( There are many restrictions on the size), and it is difficult to easily increase the size of the pump 4. For example, the pump 4 is adapted to supply bathtub water having a flow rate of 100 L / min to 150 L / min to the downstream side.

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

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

The first flow path 12 extends from the branch portion with the second flow path 14 to the underwater spouting portion 18, and is further branched into two flow paths on the way so as to communicate with the two underwater spouting portions 18. The first flow path 12 is formed by a circular tubular pipe. 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.

The second flow path 14 extends from the branch portion with the first flow path 12 to the out-of-water water discharge portion 22. The second flow path 14 is formed by a circular tubular pipe.

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

The bathtub device 1 is further an underwater spouting unit 18, in which the underwater spouting unit 18 forms an underwater spouting port 20 in the bathtub 2 and tubs the bathtub water supplied from the first flow path 12 from the underwater spouting port 20. An underwater spouting unit 18 and an out-of-water spouting unit 22 for spouting water into the water inside the bathtub 2. It is provided with an out-of-water water discharge unit 22 for discharging bathtub water supplied from the road 14 into the bathtub 2 from an out-of-water water discharge port 24, a control device 40 for controlling the pump 4, and an operation unit 26.

As shown by the arrow F1 in FIG. 2, the underwater water discharge unit 18 forms a blow water discharge unit that blows and discharges the bathtub water supplied from the pump 4 into the bathtub 2 from the vicinity of the center in the vertical direction of the bathtub 2. The underwater spouting portion 18 is provided at a height position near the center of the vertical wall 2b of the bathtub 2 in the vertical direction. In the present embodiment, the underwater spouting portion 18 is provided with two underwater spouting portions 18 on the vertical wall 2b on the side of the out-of-water spouting portion 22 of the bathtub 2. The number of underwater spouting portions 18 is not limited to two, but may be one, and may be three or more. For example, the two underwater spouting portions 18 are arranged side by side in the lateral direction (left-right direction toward the vertical wall 2b) of the bathtub 2.

The underwater water discharge unit 18 is attached sideways (for example, sideways close to horizontal) on the vertical wall 2b of the bathtub 2, and a stirring flow for stirring the bathtub water in the bathtub 2 from the underwater water discharge unit 18 into the water of the bathtub 2 is provided. It is designed to spit water as if it were forming. For example, the underwater spouting unit 18 is adapted to discharge water sideways from the underwater spouting unit 18. The underwater spouting portion 18 forms a flow in the longitudinal direction of the bathtub 2 by, for example, a flow direction component in the direction toward the longitudinal direction of the bathtub 2 from the vertical wall 2b. The underwater spouting unit 18 may, for example, discharge the bathtub water from the underwater spouting unit 18 in an obliquely upward direction, an oblique downward direction, a leftward direction, a rightward direction, or the like toward the water of the bathtub 2. Further, the underwater water discharge unit 18 may be configured to change the discharge direction of the bathtub water, for example. For example, when the bathtub water is discharged substantially parallel to the bottom portion 2a, the underwater spouting portion 18 forms a water flow flow substantially parallel to the bottom portion 2a. The underwater spouting unit 18 is arranged at a height position near the center in the vertical direction of the vertical wall 2b of the bathtub 2, that is, at a height position corresponding to the waist and back of a general user, and the underwater water spouting unit 18 is arranged. When the blow water discharged from the user collides with the waist and back of the user, the waist and back of the user can be pressed and the effect of massage can be achieved. The underwater spouting unit 18 can perform blow spouting when the control device 40 determines that the underwater spouting unit 18 is under the water surface of the bathtub 2, and serves as an underwater spouting unit that discharges water in water. It is configured.

Further, since the underwater spouting portion 18 forms a flow of water flow substantially parallel to the bottom portion 2a in the water, it is possible to form a flow of stirring the bathtub water in the longitudinal direction without the user taking a bath. The underwater spouting unit 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, it is possible to stir the bathtub water in the bathtub 2 from the water as a whole and suppress the formation of dirt stagnation in the water. In this way, the underwater spouting unit 18 functions as an underwater stirring function unit that totally agitates water in the water below the water surface.

As shown by the arrow F2 in FIG. 2, the out-of-water water discharge unit 22 constitutes a water discharge unit that discharges the bathtub water supplied from the pump 4 into the bathtub 2 from the vicinity of the upper end of the bathtub 2. The out-of-water spouting portion 22 is arranged near the upper end portion 2c of the bathtub 2. The out-of-water water discharge unit 22 is arranged above the water discharge unit 18. The out-of-water spouting portion 22 is arranged at a position above the central portion in the vertical direction of the vertical wall 2b, for example, on the upper end portion 2c. The out-of-water spouting portion 22 is arranged above the upper end portion 2c of the portion forming the overflow surface of the bathtub 2. The out-of-water spouting unit 22 is a water surface of a predetermined water level of the bathtub water stored in the bathtub 2, for example, a water surface of a preset water supply water level WL0 (see FIG. 2) for bathing under normal use conditions, or a bathtub. It is located above the water level of the physical full water level WL1 of 2. Therefore, the out-of-water water discharge unit 22 forms an aerial water discharge unit that discharges bathtub water into the air (in the atmosphere). The out-of-water water discharge unit 22 discharges the bathtub water toward the space near the shoulder of the user who is sitting and taking a bath from a position above the water surface of the normal water supply water level WL0 in the bathtub 2. Water is discharged into the bathtub 2 from the vicinity of the upper end 2c of the bathtub 2. Further, the out-of-water water discharge unit 22 discharges the bathtub water from a position above the water surface of the water supply water level WL0 when the user is not bathing in the bathtub 2, and discharges the water flow from the water surface to the water. To form. Further, the out-of-water water discharge portion 22 is arranged within a range of 300 mm upward from the height position of the upper end portion 2c of the bathtub 2 and within 300 mm downward from the height position. The out-of-water spouting portion 22 may be arranged within a range of 300 mm in the upward direction and 300 mm in the downward direction from the height position of the headrest provided at the upper end portion 2c of the bathtub 2 or the height position of the headrest. ..

As shown in FIG. 1, the out-of-water spouting portion 22 forms a wide out-of-water spouting port 24 that is relatively long in the lateral direction. The out-of-water spouting portion 22 is formed like a waterfall from the out-of-water spout port 24 formed so as to spread 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). Discharge the bathtub water. The out-of-water spout 24 opens laterally substantially parallel to the bottom 2a toward the longitudinal direction of the bathtub 2. Specifically, the out-of-water spout 24 is out of the water with respect to the height of the out-of-water spout 24 of the out-of-water spout 22 in the vertical direction (vertical direction when the out-of-water spout 24 is viewed from the front). The spout 24 is formed so as to have a large length in the left-right direction (the 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 formed to be approximately 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 the same length. Further, for example, the length of the out-of-water spout 24 in the left-right direction can be formed in the range of 300 mm to 500 mm. As shown in FIG. 2, the bathtub water discharged sideways from the out-of-water spout 24 draws a parabola in the air as a stream of stable strip-shaped (water film-like) flowing water having a substantially constant width and thickness, and downwards. Flow down.

In the water discharge portion 22 outside the water surface, the bottom surface 22a of the flow path inside the water discharge portion connected to the water discharge port 24 outside the water surface is formed substantially flat. A developing portion 15 is formed in a lateral portion of the second flow path 14 on the inner side of the out-of-water spouting portion 22. The unfolding portion 15 is formed so as to widen the horizontally extending flow path in the left-right direction toward the downstream side.

When the user sitting in the bathtub 2 takes a sitting posture with his / her back against the vertical wall 2b, the bathtub water discharged from the out-of-water water discharge unit 22 hits the neck and shoulders. The bathtub water discharged from the out-of-water spouting portion 22 flows from the shoulder to the front side (chest side) of the user and / or from the shoulder to the back side (back side) of the user. Therefore, not only the neck and shoulders but also the chest, abdomen, back and waist can be warmed by the bath water. For example, as described above, a water discharge state in which a part of the bathtub water discharged from the out-of-water water discharge unit 22 is discharged toward the user's shoulder is defined as a shoulder water discharge state.
As for the bathtub water discharged from the out-of-water water discharge unit 22, the water flow discharged from the out-of-water water discharge unit 22 is the water surface of the water supply water level WL0 from the out-of-water water discharge port 24 when the user is not bathing in the bathtub 2. It forms a flow that drops up to the height and jumps into the water. Therefore, the bathtub water discharged from the out-of-water water discharge unit 22 forms a downward stirring flow that pushes dirt and the like floating on the water surface into the water. In this way, the out-of-water water discharge unit 22 functions as a water surface stirring function unit that agitates water from the water surface into the water in the vertical direction. Even when the user is bathing in the bathtub 2, the bathtub water discharged from the out-of-water water discharge unit 22 is agitated downward to a certain extent so as to push dirt or the like floating on the water surface into the water. Can form a flow of.

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

The control device 40 is electrically connected to the operation unit 26 operated by the user. Further, the control device 40 is electrically connected to the pump 4, the branching device 30, and the like, can transmit and receive electric signals to and from each other, and can electrically operate each of the above-mentioned parts. The control device 40 is attached to the wall surface W in the bathroom. The control device 40 can also be provided on a wall surface or the like outside the bathroom. The control device 40 may be arranged at a position physically separated from the bathroom via the Internet, or is formed by arranging a predetermined program on a storage device such as a server via the Internet. You may. Further, at least a part 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 unit 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 is at least one of a simultaneous water discharge mode, a water discharge flow rate change mode, a water discharge flow rate change mode of the first modification, a water discharge flow rate change mode of the second modification, an underwater discharge mode, and an out-of-water discharge mode. The control program that can execute is stored in the storage device.

The control device 40 has a simultaneous water discharge mode in which water is discharged from the water discharge unit 18 and the out-of-water water discharge unit 22 at the same time, a water discharge flow rate change mode in which the water discharge flow rate is changed, a water discharge flow rate change mode in the first modification, and a second. It has a modified water discharge flow rate change mode, an underwater discharge mode, and an out-of-water discharge mode.

The operation unit 26 is an operation unit such as an operation panel capable of performing an operation desired by the user, and is attached to a wall surface W in the bathroom. Information that the user has operated the operation unit 26 is sent to the control device 40 by an electric signal. The operation unit 26 can also be provided on a wall surface or the like outside the bathroom.

The first flow path 12 includes a throttle portion 28 for narrowing the cross section of the flow path in the flow path on the upstream side of the underwater spout 20. The throttle portion 28 is formed by a flow path whose diameter is smaller than that of the pipe diameter of the first flow path 12. The flow path resistance of the first flow path 12 becomes 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 underwater spout 20 is throttled by the throttle portion 28. Therefore, the flow rate of the bathtub water passing through the underwater spout 20 is reduced, and the flow velocity of the bathtub water discharged from the underwater spout 20 is reduced.

As shown in FIGS. 1, 2 and 4, the bathtub device 1 further includes a branching device 30 provided so as to branch the first flow path 12 and the second flow path 14 from the pump downstream side flow path 10. I have. The branching device 30 has an opening area and / or an opening area that opens on the second flow path 14 side so that the opening area that opens on the second flow path 14 side in the branch portion is larger than the opening area that opens on the first flow path 12 side. Alternatively, the adjusting member 32 for adjusting the opening area opened on the first flow path 12 side and the adjusting member control unit 34 for controlling the adjusting member 32 are provided.

The branching device 30 is provided at a branching portion between the pump downstream side flow path 10 and the first flow path 12 and the second flow path 14, and forms a branching flow path. The adjusting member 32 is provided on the flow path 30a that branches to the first flow path 12 side of the branching device 30. The adjusting member 32 is not limited to the vicinity of the branch portion and may be provided at another position on the first flow path 12. The adjusting member 32 forms a plate-shaped valve body, and is formed so as to be relatively movable inward or outward of the flow path 30a with respect to the flow path 30a. The adjusting member 32 reduces the opening area opened on the first flow path 12 side by moving inward of the flow path 30a, and opens on the first flow path 12 side by moving outward on the flow path 30a. It is formed to increase the opening area. The adjusting member 32 is formed so as to adjust the ratio of the opening area opened on the first flow path 12 side and the opening area opened on the second flow path 14 side. The adjusting member 32 may be formed of another type of valve body capable of changing the opening degree of the flow path. If the adjusting member 32 has a structure capable of adjusting the opening area that opens on the second flow path 14 side and / or the opening area that opens on the first flow path 12 side, the adjusting member 32 is among the branching devices 30. It may be provided on the flow path on the second flow path 14 side, or at the branch portion of the flow path (the portion between the flow path 30a on the first flow path 12 side and the flow path on the second flow path 14 side). It may be provided. In this way, the adjusting member 32 allows the flow path opening area that opens on the second flow path 14 side in the branching device 30 to be larger than the flow path opening area that opens on the first flow path 12 side, and the second flow path. The flow rate of the bathtub water supplied to the 14 per unit time is made larger than the flow rate of the bathtub water supplied to the first flow path 12 per unit time. That is, the control device 40 controls the adjusting member 32 to discharge the water discharge rate Q1 from the out-of-water water discharge port 24 and discharge the water discharge rate Q2 from the water discharge unit 18. In this way, the bathtub device 1 has an out-of-water water discharge unit so that the flow velocity V1 of the bathtub water discharged from the out-of-water water discharge unit 22 becomes larger than the flow velocity V2 of the bathtub water discharged from the underwater water discharge unit 18. It is configured to discharge water from 22 and the underwater water discharge unit 18 at the same time.

The adjusting member 32 of the branching device 30 may be configured so that the flow path of both or one of the first flow path 12 and the second flow path 14 can be selectively opened and closed. Therefore, the branching device 30 can selectively supply the bathtub water supplied from the downstream flow path 10 of the pump to both or one 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 open at the same time, the adjusting member 32 can freely change the distribution ratio of the flow rate.

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

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

When attempting to start the water discharge operation from the out-of-water water discharge unit 22 by the bathtub device 1, the user operates the operation unit 26 to simultaneously discharge water from the underwater water discharge unit 18 and the out-of-water water discharge unit 22. Select. The user can also select the underwater water discharge mode in which the water discharge unit 18 is discharged only from the water discharge unit 18 or the out-of-water water discharge mode in which the water is discharged only from the out-of-water water discharge unit 22 in the operation unit 26. The 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 the water level of the underwater spouting portion 18 or higher, 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 flow path 6 as shown by the arrow C1. When the bathtub water passes through the collection unit 16, dirt in the bathtub water is collected by the collection unit 16. Then, as shown by the arrow C2, the pump 4 pumps the sucked bathtub water to the downstream side flow path 10 of the pump on the downstream side. When the control device 40 is executing the simultaneous water discharge mode in which water is discharged from the underwater water discharge unit 18 and the out-of-water water discharge unit 22 at the same time, the adjustment member 32 is transferred to the branch device 32 via the adjustment member control unit 34 of the branch device 30. The opening area of the flow path that opens on the second flow path 14 side in 30 is controlled to be larger than the opening area of the flow path that opens on the first flow path 12 side. At this time, the branching device 30 opens the communication of the flow path from the pump downstream side flow path 10 to the second flow path 14, and opens the communication from the pump downstream side flow path 10 to the first flow path 12. However, the distribution ratio of the flow rate is changed. Therefore, as shown in FIG. 4, of the bathtub water flowing out from the branching device 30, the flow rate G2 per unit time of the bathtub water supplied to the second flow path 14 is supplied to the first flow path 12. It is made larger than the flow rate G1 per unit time of water.

The bathtub water supplied to the first flow path 12 passes through the throttle portion 28, and the flow rate of the bathtub water is further throttled. Since the flow rate of the bathtub water that has passed through the throttle portion 28 is reduced, the flow velocity V2 (see FIG. 6) of the bathtub water discharged from the underwater spout 20 is reduced. At this time, the flow velocity V2 of the bathtub water discharged from the underwater spout 20 can be calculated as a value obtained by dividing the spout flow rate Q2 at the underwater spout 20 by the spout cross-sectional area S2. In addition to being theoretically calculated in this way, the flow velocity V2 of the bathtub water discharged from the underwater spout 20 may actually be measured at the underwater spout 20.

As shown by the arrow F1 (see FIGS. 2 and 3), the bathtub water discharged from the underwater spout 20 of the underwater spouting unit 18 is a stirring flow for stirring the bathtub water in the bathtub 2 in the water below the water surface, for example. It forms a water flow in the longitudinal direction of the bathtub 2. The underwater spouting unit 18 can form a water stream that hits the user's back when the user is sitting in the bathtub 2. When the user is not sitting in the bathtub 2, as shown by the arrow F3 (see FIG. 3), this 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, laterally. A flow is formed so as to return from the side to the water spout 20 side again. Such a flow can stir the bathtub water in the bathtub as a whole from the water, and can suppress the formation of dirt stagnation in the water.

The bathtub water supplied to the second flow path 14 is discharged from the out-of-water discharge unit 22 at a flow velocity V1 (see FIG. 5). At this time, the flow velocity V1 of the bathtub water discharged from the out-of-water spout 24 of the out-of-water spout portion 22 is obtained by dividing the spout flow rate Q1 in the out-of-water spout 24 of the out-of-water spout 22 by the cross-sectional area S1 of the spout. It can be calculated as a value. The flow velocity V1 of the bathtub water discharged from the out-of-water spout 24 is theoretically calculated in this way, and even if the flow velocity is actually measured at the out-of-water spout 24 of the out-of-water spout 22. good.

Since the out-of-water spouting portion 22 forms a wide opening, the bathtub water is spouted as shown by the arrow F1 and then spreads in the left-right direction from the out-of-water spouting portion 22 as shown by the arrow F4. It forms a band-shaped spouting stream that draws a parabolic pattern in the air. The out-of-water spouting portion 22 can form a water stream that hits the user's neck and shoulders when the user sits on the vertical wall 2b with his back in the bathtub 2, and the water discharge portion 22 can form a water flow that hits the user's neck and shoulders, and can form a water flow from the shoulder to the front side (chest) of the user. It is possible to form a water flow that spreads to the side). On the other hand, when the user is not sitting in the bathtub 2, the spouting stream that draws an arc in the air forms a flow that jumps into the water surface, as shown by arrow F5 (see FIG. 2). The water flow is accelerated downward by the drop difference 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 out-of-water water discharge unit 22 forms a downward stirring flow that pushes dirt or the like floating on the water surface J into the water. This push-in flow forms a push-in flow downward from the water surface J in a screen shape over the left and right widths of the out-of-water spout port 24. Here, when water is discharged from the out-of-water spouting unit 22 and the underwater spouting unit 18 at the same time, the flow velocity V1 of the bathtub water discharged from the out-of-water spouting unit 22 is the flow velocity V2 of the bathtub water discharged from the underwater spouting unit 18. Has been made larger than. Therefore, as shown by arrows F5 and F6, the flow velocity of the pushing flow becomes relatively large, and dirt and the like floating on the water surface J can be pushed more strongly into the water.

By simultaneously spouting water from the out-of-water spouting unit 22 and the underwater spouting unit 18, the water flow pushed from the water surface to the water by the water spouting from the out-of-water spouting unit 22 and the agitated flow in the water discharged from the underwater spout 20 Together, it pushes dirt floating on the surface of the water into the water, stirs the dirt so that it does not settle in the water, and sucks the dirt from the suction port 8 in the water to further improve the efficiency of collecting it in the collection unit 16. Can be improved.

Next, the water discharge flow rate change mode by the bathtub device 1 according to the present embodiment will be described with reference to FIGS. 3 to 7.
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. In FIG. 7, the flow rate, the flow velocity, and the opening degree of the flow path in the branching device are shown on the vertical axis, and the time is shown on the horizontal axis. The flow rate in FIG. 7 is an example, and the discharge water flow rate q1 and the discharge water flow rate q3 are shown as examples of the water discharge flow rate Q1 from the out-of-water discharge unit 22, and the water discharge flow rate q2 is shown as an example of the water discharge flow rate Q2 from the water discharge unit 18. , 0 discharge flow rate is shown.

The water discharge flow rate change mode is executed by the control device 40 after simultaneous water discharge from the out-of-water water discharge unit 22 and the water discharge unit 18 is executed. The execution of simultaneous water discharge from the out-of-water water discharge unit 22 and the water discharge unit 18 may be executed in the simultaneous water discharge mode, or may be executed in the water discharge flow rate change mode. Since the execution of simultaneous water discharge from the out-of-water water discharge unit 22 and the water discharge unit 18 is the same as the operation in the simultaneous water discharge mode described above, the description thereof will be omitted.

When the discharge water flow rate change mode is executed, the control device 40 causes the pump 4 to be operated so that the flow rate Q3 of the bathtub water sucked from the suction port becomes constant at time T0. Further, at time T0, the control device 40 controls the adjusting member 32 to discharge the water discharge rate q1 from the out-of-water water discharge port 24 and discharge the water discharge rate q2 from the water discharge unit 18. At this time, the relationship of q3 = q1 + q2 is generally established. At this time, the flow velocity V1 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity V2 of the bathtub water discharged from the water discharge unit 18. After the execution of the discharge water flow rate change mode is started, the control device 40 keeps the rotation speed of the pump 4 constant and keeps the suction flow rate q3 constant.

At time T1, in the control device 40, after the execution of the water discharge flow rate change mode is started, the flow rate V1 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow rate V2 of the bathtub water discharged from the water discharge unit 18. From this state, control is performed to reduce the water discharge flow rate q2 from the water discharge unit 18. Specifically, the control device 40 moves the adjusting member 32 inside the first flow path 12 to bring the opening degree to 0, closes the first flow path 12, and supplies the adjustment member 32 to the first flow path 12. The amount of water in the bathtub is reduced to 0, and the flow rate q2 of water discharged from the water discharge unit 18 is reduced to 0. 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 is increased from the out-of-water water discharge port 24 to become the water discharge flow rate q3. That is, the control device 40 increases the ratio of the flow rate of the water discharged from the water discharge port 24 outside the water surface, and further increases the flow velocity V1 of the water discharged from the water discharge port 24 outside the water surface.

At times T1 to T2, the control device 40 continues to discharge water at the discharge water flow rate q3 from the out-of-water discharge port 24. In this way, by increasing the flow rate of water discharged from the out-of-water water discharge unit 22 in a predetermined period, the flow velocity V1 of the bathtub water discharged from the out-of-water water discharge unit 22 is further increased, and the water is discharged from the out-of-water water discharge unit 22. The effect of pushing dirt floating on the surface of the water into the water can be further strengthened. Therefore, it is possible to push dirt that was difficult to push into the water from the water surface or a relatively large amount of dirt floating on the water surface into the water at the time when the water discharge rate q1 was discharged from the out-of-water spout port 24. In addition, the speed of pushing dirt into the water (speed of removal) can be increased and the depth of pushing dirt can be increased, so that the efficiency of removing dirt can be further improved. At times T1 to T2, the control device 40 is in a state where the water discharge flow rate q2 from the underwater water discharge unit 18 is reduced to 0, that is, a state in which water discharge from the underwater water discharge unit 18 is temporarily stopped. In this way, under the control of the control device 40, the adjusting member 32 of the branching device 30 has a constant flow rate q3 of the bathtub water sucked from the suction port 8 from the underwater water discharge unit 18 for a predetermined period. Control is performed to reduce the discharge water flow rate.

The predetermined period is, for example, the time from time T1 to time T2. The time from the time T1 to the time T2 is set to a period of, for example, a few seconds to a few minutes, so that the stirring flow originally caused by the underwater spouting unit 18 becomes relatively weak, and then intermittently again. After the time T2, a stirring flow in the water by the water spouting unit 18 can be generated relatively strongly, and the generation of dirt stagnation in the water can be efficiently suppressed. By combining such a stirring flow in water with a relatively strong pushing flow discharged from the out-of-water discharge unit 22, dirt can be collected more efficiently by the collection unit 16.
The predetermined period may be continued from time T1 until the end of execution of the discharge water flow rate change mode as long as it is a predetermined period in the control device 40. That is, the discharge water flow rate change mode may be terminated by increasing the water discharge flow rate from the out-of-water discharge unit 22 only once. In this case, after the time T1, the stirring flow caused by the underwater spouting unit 18 continues relatively weakly in the bathtub before the time T1, and this flow is compared with the water discharged from the out-of-water spouting unit 22. Dirt can be collected by the collecting unit 16 by combining it with a strong pushing flow.

At time T2, the control device 40 moves the adjusting 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. The water discharge rate from the water discharge unit 18 is increased from 0 to the water discharge rate q2. Since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q3 from the out-of-water water discharge port 24 is reduced to become the water discharge flow rate q1. Therefore, after time T2, while forming a push-in flow by the water discharged from the out-of-water water discharge unit 22, a stirring flow in the water by the water discharge unit 18 is relatively strongly generated, and it is efficient that dirt stagnation occurs in the water. Can be suppressed. Further, at time T2 to time T3, the effect of pushing the dirt floating on the water surface into the water by the water discharge from the out-of-water water discharge unit 22 is continued with a certain effect.

At time T3, the control device 40 moves the adjusting member 32 into the first flow path 12 again to bring the opening degree to 0, closes the first flow path 12, and supplies the adjustment member 32 to the first flow path 12. The amount of water in the bathtub is reduced to 0, and the flow rate q2 of water discharged from the water discharge unit 18 is reduced to 0. 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 out-of-water water discharge port 24 is increased to the water discharge flow rate q3. Therefore, the flow velocity V1 of the water discharged from the water discharge port 24 outside the water surface is further increased. After that, at times T3 to T4, the control device 40 continues to discharge water at the discharge water flow rate q3 from the out-of-water discharge port 24.

At time T4, the control device 40 moves the adjusting member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and the water discharge flow rate from the underwater water discharge unit 18 is changed from 0 to the water discharge flow rate q2. Increase to. Therefore, the water discharge flow rate q3 from the out-of-water discharge port 24 is reduced to become the water discharge flow rate q1. In this way, the control device 40 controls the adjusting member 32 to be in the state of the opening degree 0 of the first flow path 12 for a predetermined period, and reduces the water discharge flow rate q2 from the underwater water discharge unit 18 to 0. The water discharge flow rate q1 from the out-of-water discharge port 24 is increased to the water discharge flow rate q3. In the water discharge flow rate change mode, the control device 40 repeatedly executes the control such that the adjusting member 32 is brought into the state of the opening degree 0 of the first flow path 12 over a predetermined engine at least once, more preferably a plurality of times. do. After a certain period of time elapses, the control device 40 ends the execution of the water discharge flow rate change mode and returns to the simultaneous water discharge mode.

Next, with reference to FIGS. 3 to 8, the water discharge flow rate change mode of the first modification by the bathtub apparatus 1 according to this embodiment will be described. Regarding the operation in the discharge water flow rate change mode of the first modification, the description of the operation common to the operation in the discharge water flow rate change mode described above will be omitted, and mainly different parts will be described.
FIG. 8 shows 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. It is a time chart. In FIG. 8, the flow rate, the flow velocity, and the opening degree of the flow path in the branching device are shown on the vertical axis, and the time is shown on the horizontal axis. The flow rate in FIG. 8 is an example, and the discharge water flow rate q5 and the discharge water flow rate q7 are shown as an example of the water discharge flow rate Q1 from the out-of-water discharge unit 22, and the water discharge flow rate q4 is an example of the water discharge flow rate Q2 from the water discharge unit 18. , The discharge flow rate q6 is shown.

When the discharge water flow rate change mode of the first modification is executed, the control device 40 causes the pump 4 to operate so that the flow rate q3 of the suction of bathtub water from the suction port becomes constant at time T0. At time T0, the control device 40 controls the adjusting member 32 to discharge water with a water discharge flow rate q4 from the water discharge unit 18. 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 discharge water flow rate q2, and the water discharge flow rate q4 is larger than the discharge water flow rate q2. At this time, since the adjusting member 32 does not adjust the opening degree on the second flow path 14 side in the present embodiment, the opening degree on the second flow path 14 side remains constant. Since the water discharge unit 18 discharges water with a discharge rate q4, the out-of-water discharge port 24 discharges water with a discharge rate q5. At this time, the relationship of q3 = q4 + q5 is generally established. At this time, the flow velocity V3 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity V4 of the bathtub water discharged from the water discharge unit 18. The discharge water flow rate q5 is smaller than the discharge water flow rate q1. In this way, the ratio and flow rate of the discharge water flow rate can be changed.

At time T1, in the control device 40, after the execution of the water discharge flow rate change mode is started, the flow rate V3 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow rate V4 of the bathtub water discharged from the water discharge unit 18. From this state, control is performed to reduce the water discharge flow rate q4 from the water discharge unit 18. Specifically, the control device 40 moves the adjusting member 32 so as to close a region of about two-thirds in the first flow path 12 so as to have an opening degree of about one-third. The flow path 12 is brought into a small opening state, the amount of bathtub water supplied to the first flow path 12 is reduced, and the water discharge flow rate q4 from the water discharge unit 18 is reduced to the water discharge flow rate q6. The flow velocity is also reduced from the flow velocity V4 to the flow velocity V6 according to the discharge water flow rate. The discharge water flow rate q6 is, for example, about one-third of the discharge water flow rate q4. 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 from the out-of-water water discharge port 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 ratio of the flow rate of the water discharged from the out-of-water spout 24, and further increases the flow velocity of the water discharged from the out-of-water spout 24 from the flow velocity V3 to the flow velocity V5 (not shown). Also at this time, the flow velocity V5 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity V6 (not shown) of the bathtub water discharged from the water discharge unit 18.

At times T1 to T2, the control device 40 continues to discharge water at the discharge water flow rate q7 and the flow velocity V5 from the out-of-water discharge port 24. In this way, by increasing the flow rate of the water discharged from the out-of-water water discharge unit 22 in a predetermined period, the flow velocity of the bathtub water discharged from the out-of-water water discharge unit 22 is increased from the flow velocity V3 to the flow velocity V5, and the out-of-water water discharge unit 22 The effect of pushing dirt floating on the surface of the water into the water can be further strengthened by spouting water from the water. Further, by controlling to reduce the flow rate of water discharged from the water discharge unit 18 to a value larger than 0 when controlling to reduce the flow rate of water discharged from the water discharge unit 18, 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 strengthening the pushing effect.

At time T2, the control device 40 moves the adjusting member 32 outward of the first flow path 12 so as to open the first flow path 12 to a substantially fully open state, and the bathtub is supplied to the first flow path 12. The amount of water is increased, and the water discharge flow rate from the water discharge unit 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 out-of-water discharge port 24 is reduced to become the water discharge flow rate q5 (flow velocity V3). Therefore, after the time T2, the dirt pushed in by the pushing flow of the relatively fast flow velocity V5 discharged from the out-of-water spouting unit 22 is again put into the water by the relatively strong agitation flow in the water by the underwater water discharging unit 18. The dirt can be agitated while efficiently suppressing the formation of dirt stagnation.

At time T3, the control device 40 again moves the adjusting member 32 so as to close a region of about two-thirds in the first flow path 12, puts the first flow path 12 in a small opening state, and underwater. The water discharge flow rate q4 (flow velocity V4) from the water discharge unit 18 is reduced to the water discharge 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 out-of-water discharge port 24 is increased to the discharge water flow rate q7 (flow velocity V5). After that, the same process is repeated. The control device 40 controls the adjusting member 32 at least once in the discharge water flow rate change mode of the first modification so as to reduce the opening degree in the first flow path 12 over a predetermined engine. More preferably, it is repeated a plurality of times. After a certain period of time elapses, the control device 40 ends the execution of the water discharge flow rate change mode of the first modification, and returns to the simultaneous water discharge mode.

Next, with reference to FIGS. 2 and 9, the water discharge flow rate change mode of the second modification by the bathtub device 1 according to the present embodiment will be described. Regarding the operation in the discharge water flow rate change mode of the second modification, the description of the operation common to the operation in the discharge water flow rate change mode described above will be omitted, and mainly different parts will be described.
FIG. 9 shows 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 second modification. It is a time chart. In FIG. 9, the flow rate, the flow velocity, and the opening degree of the flow path in the branching device are shown on the vertical axis, and the time is shown on the horizontal axis. The flow rate in FIG. 9 is an example, and the discharge water flow rate q1 and the discharge water flow rate q3 are shown as examples of the water discharge flow rate Q1 from the out-of-water discharge unit 22, and the water discharge flow rate q2 is shown as an example of the water discharge flow rate Q2 from the water discharge unit 18. , 0 discharge flow rate is shown.

When the discharge water flow rate change mode of the second modification is executed, the control device 40 causes the pump 4 to be operated so that the flow rate q3 of the suction of bathtub water from the suction port becomes constant at time T10. After starting the execution of the water discharge flow rate change mode of the second modification, the control device 40 sets the adjusting member 32 to the state of the opening degree 0 of the first flow path 12, closes the first flow path 12, and closes the underwater water discharge unit. The water discharge flow rate from 18 is set to 0. The second flow path 14 side of the branching device 30 remains open. Therefore, the control device 40 makes the water discharge flow rate from the out-of-water water discharge port 24 the water discharge flow rate q3 (flow velocity V3). As described above, only the water discharged from the out-of-water water discharge port 24 can be temporarily executed while the water discharge flow rate change mode of the second modification is being executed.

At times T10 to T11, the control device 40 continues to discharge water at the discharge water flow rate q3 (flow velocity V3) from the out-of-water discharge port 24. In this way, by increasing the flow rate of the water discharged from the out-of-water water discharge unit 22 in a predetermined period, the flow velocity of the bathtub water discharged from the out-of-water water discharge unit 22 is set to the increased flow rate V3, and the water discharge from the out-of-water water discharge unit 22 is set. Therefore, the effect of pushing the dirt floating on the water surface into the water can be further strengthened. Therefore, it is possible to push dirt that was difficult to push into the water from the water surface or a relatively large amount of dirt that floats on the water surface into the water at the time when the water is discharged simultaneously from the out-of-water spout port 24 and the water spouting portion 18. In addition, the speed of pushing dirt into the water (speed of removal) can be increased and the depth of pushing dirt can be increased, so that the efficiency of removing dirt can be further improved. At times T10 to T11, the control device 40 is in a state where the water discharge flow rate q2 from the underwater water discharge unit 18 is reduced to 0, that is, a state in which water discharge from the underwater water discharge unit 18 is temporarily stopped. The predetermined period is, for example, a time from time T10 to time T11. The time from the time T10 to the time T11 can be set longer than the time from the time T11 to the time T12, which will be described later. The time from the time T10 to the time T11 may be set longer than the time from the time T1 to the time T2. For example, the time from the time T10 to the time T11 can be set to be twice or more the time from the time T1 to the time T2. The time from the time T10 to the 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 adjusting member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and the water discharge flow rate from the underwater water discharge unit 18 is changed from 0 to the water discharge flow rate q2. Increase to (flow velocity V2). Since the control device 40 maintains the suction flow rate q3 constant, the water discharge flow rate q3 from the out-of-water water discharge port 24 is reduced to become the water discharge flow rate q1 (flow velocity V1). Therefore, after time T2, while forming a push-in flow by the water discharged from the out-of-water water discharge unit 22, a stirring flow in the water by the water discharge unit 18 is relatively strongly generated, and it is efficient that dirt stagnation occurs in the water. Can be suppressed. Further, at time T11 to time T12, the effect of pushing the dirt floating on the water surface into the water by the water discharge from the out-of-water water discharge unit 22 is continued with a certain effect.

At time T12, the control device 40 again moves the adjusting member 32 into the first flow path 12 so that the opening degree is 0, closes the first flow path 12, and discharges water from the underwater water discharge unit 18. The flow rate q2 is reduced to 0. 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 out-of-water water discharge port 24 is increased to the water discharge flow rate q3. Therefore, the flow velocity of the water discharged from the out-of-water discharge port 24 is increased from the flow velocity V1 to the flow velocity V3. After that, after the time T12, the control device 40 continues to discharge water having a water discharge flow rate q3 from the out-of-water water discharge port 24. The control device 40 repeatedly controls the adjusting member 32 in a predetermined engine at least once, more preferably a plurality of times, as in the time T10 to the time T12, in the water discharge flow rate change mode of the second modification. After a lapse of a certain period of time, the control device 40 ends the execution of the water discharge flow rate change mode of the second modification, and returns to the simultaneous water discharge mode.

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

Further, once the flow velocity V1 is increased to the flow velocity V3 at the time T1, the flow velocity V3 is decreased to the flow velocity V1 at the time T2. At this time, at time T2, as the flow velocity of the water discharged from the out-of-water water discharge unit 22 is reduced from the flow velocity V3 to the flow velocity V1, the water landing position is changed from the water landing position H2 to the water landing position H1. It moves in the direction approaching (the direction approaching the out-of-water water discharge portion 22 in the longitudinal direction). Therefore, once the water landing position has moved to the water landing position H2, the water discharged from the out-of-water water discharge unit 22 can push the dirt under the water surface J while returning to the area I again. Therefore, the dirt floating on the water surface can be pushed into the water in a wider area by the water discharged from the out-of-water water discharge unit 22, and the water landing position once returned to the position where the water landing position has passed is located. , The dirt can be pushed into the water again, and the 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 landing position moves from the landing position H1 to the landing position H2 again in the direction away from the out-of-water water discharge portion 22. Therefore, the water landing position can be moved 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 so as to periodically reciprocate, and the water landing position can be swung. Dirt can be pushed into the water in the area of the surface that covers. As described above, in the bathtub device 1, the water landing position of the bathtub water discharged from the out-of-water water discharge unit 22 on the water surface in the bathtub 2 is set in a state where the flow rate of the bathtub water sucked from the suction port 8 is constant. , Is configured to change. In the bathtub device 1, even if 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 out-of-water water discharge unit 22 on the water surface in the bathtub 2 is changed. It is also possible to configure it as such.

Such a change in the water landing position can be executed by executing the water discharge flow rate change mode by the control device 40, but the change in the water landing position can be caused by the water discharge from the water discharge port 24 of the out-of-water water discharge unit 22. It may be executed by changing the orientation. Specifically, the out-of-water spouting portion 22 is provided with a changing mechanism for changing the direction of the out-of-water spouting port 24 of the out-of-water spouting portion 22 so as to physically raise and lower the neck from the horizontal direction to the downward direction or the upward direction. May be good. Such a changing mechanism is electrically connected to the control device 40, the direction of the out-of-water water discharge port 24 is changed by the control device 40, and the water landing position can be changed in the front-rear direction in the longitudinal direction. Further, as a modification, even if the out-of-water spout portion 22 is provided with a changing mechanism for changing the direction of the out-of-water spout 24 from the front facing the longitudinal direction to the right or left so as to physically swing the neck to the left and right. good. The landing position at this time fluctuates in an arc in the left-right direction. Such a changing mechanism is electrically connected to the control device 40, the direction of the out-of-water water discharge port 24 is changed by the control device 40, and 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 velocity of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity of the bathtub water discharged from the underwater water discharge unit 18. , The out-of-water spouting unit 22 and the underwater spouting unit 18 are configured to discharge water at the same time. As a result, the pump 4 is changed to a large one so as to increase the circulation flow rate and increase the amount of dirt collected, or the device for collecting the dirt in the water of the bathtub 2 and the dirt on the water surface of the bathtub 2 are caught. It is possible to collect dirt in the water of the bathtub 2 and the water surface of the bathtub 2 without providing a collecting device.
Further, according to the above-mentioned configuration, the 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 out-of-water water discharge unit 22. Further, the dirt in the water of the bathtub 2 can be agitated by a relatively low-speed water flow discharged from the water spouting unit 18, and the formation of dirt stagnation in the water can be suppressed, and the dirt can be agitated by the relatively low-speed water flow. It is possible to make it difficult to hinder the formation of a flow for sucking dirt from the suction port 8 into the suction flow path 6. Therefore, the dirt floating on the water surface can be pushed into the water, the stagnation of the dirt in the water can be suppressed, and the efficient suction to the suction flow path 6 can be realized. And the efficiency of collecting dirt on the water surface of the bathtub 2 can be improved.

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 out-of-water discharge water is discharged. The value obtained by dividing the water discharge flow rate Q1 at at least one out-of-water spout port 24 of the portion 22 by the spout cross-sectional area S1 is the value obtained by dividing the spout flow rate Q2 at at least one submersible spout 20 of the underwater spout portion 18 by this spout cross-sectional area. Greater than the value divided by S2. As a result, the flow velocity of the bathtub water discharged from at least one out-of-water spout port 24 of the out-of-water spouting unit 22 is larger than the flow velocity of the bathtub water discharged from at least one underwater spout 20 of the underwater spouting unit 18. As such, water can be discharged from the out-of-water water discharge unit 22 and the water discharge unit 18 at the same time. Therefore, the dirt floating on the water surface can be pushed into the water, the stagnation of the dirt in the water can be suppressed, and the efficient suction to the suction flow path 6 can be realized. It is possible to increase the efficiency of collecting dirt. Further, not only when there is one out-of-water spout 24 and one underwater spout 20, but also when there are a plurality of out-of-water spouts 24 and / or underwater spouts 20, at least the out-of-water spout 22 With the out-of-water spouting unit 22 so that the flow velocity of the bathtub water discharged from one out-of-water spout 24 is larger than the flow velocity of the bathtub water discharged from at least one underwater spout 20 of the underwater spouting unit 18. Water can be discharged from the underwater water discharge unit 18 at the same time. Therefore, even when there are a plurality of out-of-water spouts 24 and / or underwater spouts 20, it is relatively easy to push the dirt floating on the water surface into the water and suppress the stagnation of the dirt in the water. Efficient suction into the suction flow path 6 can be realized, and the efficiency of collecting dirt in the bathtub water by the collection unit 16 in the suction flow path 6 can be enhanced.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the first flow path 12 includes a throttle portion 28 for narrowing the cross section of this flow path in the flow path on the upstream side of the underwater spout 20. .. As a result, the flow rate of the bathtub water from the first flow path 12 to the underwater spout 20 can be throttled by the throttle portion 28 of the first flow path 12, and the flow velocity of the bathtub water discharged from the underwater spout 20 is reduced. can. Further, due to the simple configuration that the first flow path 12 includes the throttle portion 28, the flow path resistance of the first flow path 12 is made larger than the flow path resistance of the second flow path 14, and the water flows from the first flow path 12 to water. The flow rate of the bathtub water reaching the spout 20 is made smaller than the flow rate of the bathtub water from the second flow path 14 to the out-of-water spout 24, and the flow velocity of the bathtub water discharged from the out-of-water spout 22 is the water spouting section. It is relatively easy to realize a relationship that is larger than the flow velocity of the bathtub water discharged from 18.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the branching device 30 opens the opening area opened on the second flow path 14 side in the branch portion to the first flow path 12 side by the adjusting member 32. It can be larger than the opening area. As a result, the flow rate of the bathtub water from the second flow path 14 to the out-of-water spout 24 is made larger than the flow rate of the bathtub water from the first flow path 12 to the underwater spout 20, and the water is discharged from the out-of-water spout portion 22. It is relatively easy to realize a relationship in which the flow velocity of the bathtub water is larger than the flow velocity of the bathtub water discharged from the water discharge unit 18. Further, by providing the adjusting member 32 in which the branching device 30 can be controlled, the above relationship can be realized relatively easily, and for example, out-of-water water discharge can be achieved without adding another device or improving another configuration. It is also possible to realize a water discharge pattern of only water discharged from the unit 22 or a water discharge pattern of only water discharged from the underwater water discharge unit 18.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the flow rate control unit discharges water from the water discharge unit 18 for a predetermined period in a state where the flow rate of suction of bathtub water from the suction port 8 is constant. Control to reduce the flow rate. As a result, in a state where the flow rate of the bathtub water sucked from the suction port 8 is constant, the flow rate of the water discharged from the water discharge unit 18 is reduced for a predetermined period, and the flow rate of the water discharged from the out-of-water water discharge unit 22 is reduced in this predetermined period. The flow rate of the bathtub water discharged from the out-of-water water discharge unit 22 is increased. Therefore, it is possible to further enhance the effect of pushing the dirt floating on the water surface into the water by the water discharged from the water discharge portion 22 outside the water surface.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the adjusting member 32 of the branching device 30 is a water spouting unit for a predetermined period in a state where the flow rate of sucking bathtub water from the suction port 8 is constant. Control is performed to reduce the flow rate of water discharged from 18. As a result, in a state where the flow rate of the bathtub water sucked from the suction port 8 is constant, the flow rate of the water discharged from the water discharge unit 18 is reduced for a predetermined period, and the flow rate of the water discharged from the out-of-water water discharge unit 22 is reduced in this predetermined period. The flow rate of the bathtub water discharged from the out-of-water water discharge unit 22 is increased. Therefore, it is possible to further enhance the effect of pushing the dirt floating on the water surface into the water by the water discharged from the water discharge portion 22 outside the water surface.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, the landing position of the bathtub water discharged from the out-of-water water discharge unit 22 on the water surface in the bathtub 2 is configured to be changed. .. As a result, the landing position of the bathtub water discharged from the out-of-water water discharge unit 22 on the water surface in the bathtub 2 can be changed in a wider area than the unchanged water landing region when the water landing position does not change. Therefore, the dirt floating on the water surface can be pushed into the water in a wider area by the water discharged from the out-of-water water discharge unit 22.

Further, according to the bathtub device 1 according to the first embodiment of the present invention, when the underwater water discharge unit 18 is provided in the first region A1, the suction port 8 is provided in the second region A2, and the underwater water discharge unit 18 is provided. When provided in the second region A2, the suction port 8 is provided in the first region A1. As a result, the underwater spouting portion 18 and the suction port 8 are separated into a first region A1 in which the bathtub 2 is bisected in the longitudinal direction and a second region A2 on the opposite side of the first region A1. Be placed. Therefore, it is possible that the water flow due to the water discharged from the water discharge unit 18 does not hinder the suction of the bathtub water from the suction port 8.

Next, the bathtub device according to the 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 the bathtub device according to the present invention. Since the bathtub device 101 according to the second embodiment has substantially the same structure as the bathtub device 1 according to the first embodiment described above, only the differences from the first embodiment of the second embodiment of the present invention will be described. The same reference numerals are given to the drawings for similar parts, and the description thereof will be omitted.

As shown in FIG. 11, the bathtub device 101 according to the second embodiment of the present invention is a bathtub device 101 provided in the bathtub 2 for storing 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 branch portion with the first flow path 12 to the out-of-water water discharge portion 22. The second flow path 114 is formed by a circular tubular pipe. The second flow path 114 is a bathtub water introduction path 150 extending downstream of the injection section side flow path 148 from the branch portion with the first flow path 12 to the injection section 146, which will be described later, and the jet pump water storage section 142, which will be described later. And have.

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 jet pump water storage unit 142 in which the bath water drawn by the jet pump action is stored, the bath 2 and the jet pump water storage unit 142, and collects the bath water in the jet pump water storage unit 142. It has a jet pump flow path 144 forming a flow path that can be introduced into the water, and an opening area D1 smaller than the water passage cross-sectional area of the second flow path 114 on the upstream side of the jet pump water storage unit 142, and is supplied. It is provided with an injection unit 146 that accelerates the bath water and injects it into the jet pump water storage unit 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 unit 142 is provided between the injection unit side flow path 148 of the second flow path 114 and the bathtub water introduction path 150. The jet pump water storage unit 142 is arranged in a vicinity region on 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 unit 142 forms a box-shaped water storage chamber, forms a water storage space having a width larger than the opening area D1 of the injection unit 146, and has a width larger than the opening area of the bath water introduction path 150. Is forming. The jet pump water storage unit 142 communicates with the bathtub 2, and the bathtub water of the bathtub 2 flows into the jet pump water storage unit 142 via the jet pump flow path 144.

The jet pump water storage unit 142 is arranged at a position below the predetermined water surface J in the bathtub 2, more preferably at a position lower than the intermediate height position from the upper end 2c to the bottom 2a of the bathtub 2. Has been done. Therefore, when the bathtub water is stored in the bathtub 2, the bathtub water also flows into the jet pump water storage unit 142 and is stored. In a state where the bathtub water is not discharged from the out-of-water water discharge unit 22, the bathtub water can move back and forth between the jet pump water storage unit 142 and the water storage area in the bathtub 2. Therefore, the temperature of the bathtub water in the bathing area in the jet pump water storage unit 142 and the bathtub 2 is almost the same as the temperature of the bathtub water. The jet pump water storage unit 142 may be provided at a position above the water surface J.

The jet pump water storage unit 142 is communicated with a water supply source or a water supply device other than the bathtub 2, and the bathtub water supplied from the water supply source or the like flows in to form a bathtub water storage chamber. May be good. That is, the bathtub water may be supplied to the jet pump unit 140 from another external water supply source or the like while the bathtub water is not supplied or is supplied from the bathtub 2 to the jet pump water storage unit 142.

The jet pump flow path 144 communicates with the bathtub 2 and allows the bathtub water of the bathtub 2 to flow into the flow path 144. 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 and rises in the back side region of the vertical wall 2b to form the jet pump water storage unit 142. It is connected to the bottom surface 142a. As described above, the jet pump flow path 144 forms a communication flow path between the jet pump water storage unit 142 and the bathtub 2. Since the flow path 144 for the jet pump is provided, the bathtub water of the bathtub 2 is supplied to the jet pump water storage unit 142 without separately providing a dedicated water supply source or the like for supplying the bathtub water to the jet pump water storage unit 142. The entire structure of the bathtub device 101 can be simplified and formed. Further, since the jet pump water storage unit 142 is not separately provided with a dedicated water supply source or the like for supplying bathtub water from the outside of the bathtub 2, the water level in the bathtub 2, that is, by receiving additional water supply from the outside, that is, It is possible to suppress the increase in the amount of water. 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 of the center line B that divides the long side of the bathtub into two equal parts. 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 portion 142 is as short as possible.

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

Since the injection unit 146 injects the bathtub water from the narrowed opening of the flow path diameter and flows it into the bathtub water introduction path 150 through the jet pump water storage unit 142, a pressure loss of a predetermined size is generated. The magnitude of this pressure loss can be set to a magnitude relatively close to the magnitude of the pressure loss when the bath water is discharged from the underwater water discharge unit 18, the resistance of the flow path passing through the jet pump unit 140 and the water discharge unit. By making the resistance of the flow path leading to 18 relatively close, it is possible to adjust the flow rate and the flow velocity while allowing the bath water to flow from the common pump 4 to both flow paths at the same time.

The bathtub water introduction path 150 extends upward from the opening in the upper surface 142b of the jet pump water storage unit 142 facing the injection unit 146. The bathtub water introduction path 150 forms a flow path that extends linearly on an extension line in the direction of the opening 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 upper surface 142b of the jet pump water storage unit 142.
The second flow path 114 is formed so 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 a bathtub water having a flow rate larger than the flow rate of the bathtub water jetted from the injection unit 146 can be introduced. The injection unit 146, the jet pump water storage unit 142, and the bathtub water introduction path 150 form a linear flow path extending in one direction, and a high-speed flow along the direction of the high-speed jet flow injected from the injection unit 146. Can be formed. The bathtub water introduction path 150 of the second flow path 14 is connected to the laterally developed 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 at the developing portion 15, and is discharged relatively uniformly in the left-right direction from the out-of-water spout port 24.

The collecting unit 16 is provided on the suction flow path 6 and the jet pump flow path 144. The collecting unit 16 may be arranged so as to be provided in either the suction flow path 6 or the jet pump flow path 144.

Even when the jet pump unit 140 is provided on the second flow path 114 as described above, the water discharged from the out-of-water water discharge unit 22 is discharged from the neck to the user sitting with his / her back against the vertical wall 2b. You can hit it on your shoulder. The bathtub water discharged from the out-of-water spouting portion 22 flows from the shoulder to the front side (chest side) of the user and / or from the shoulder to the back side (back side) of the user. Therefore, not only the neck and shoulders but also the chest, abdomen, back and waist can be warmed by the bath water. For example, as described above, a water discharge state in which a part of the bathtub water discharged from the out-of-water water discharge unit 22 is discharged toward the user's shoulder is defined as a shoulder water discharge state.
Further, in the bathtub water discharged from the out-of-water water discharge unit 22, the water flow discharged from the out-of-water water discharge unit 22 is the water supply water level WL0 from the out-of-water water discharge port 24 when the user is not bathing in the bathtub 2. It forms a flow that falls to the surface of the water and jumps into the water. Therefore, the bathtub water discharged from the out-of-water water discharge unit 22 forms a downward stirring flow that pushes dirt and the like floating on the water surface into the water. In this way, the out-of-water water discharge unit 22 functions as a water surface stirring function unit that agitates water from the water surface into the water in the vertical direction. Even when the user is bathing in the bathtub 2, the bathtub water discharged from the out-of-water water discharge unit 22 is agitated downward to a certain extent so as to push dirt or the like floating on the water surface into the water. Can form a flow of.

The bathtub device 101 includes the out-of-water water discharge unit 22 and the underwater water discharge unit 18 so that the flow velocity of the bathtub water discharged from the out-of-water water discharge unit 22 becomes larger than the flow velocity of the bathtub water discharged from the underwater water discharge unit 18. It is configured to spout water at the same time. In order to realize such a relationship, the flow rate per unit time of the bathtub water supplied to the out-of-water water discharge unit 22 by using the jet pump unit 140 is the unit time of the bathtub water supplied to the underwater water discharge unit 18. It is made larger than the flow rate per. Further, such a relationship is realized not only by the jet pump unit 140 but also by the shape of the spout of the out-of-water spout 22 and / or the submersible spout 18 (spout cross-sectional area S1 and / or spout cross-sectional area S2). You may. When such a relationship is realized, for example, as shown in FIG. 5, a value obtained by dividing the water discharge flow rate Q1 at at least one out-of-water spout 24 of the out-of-water spout portion 22 by the spout cross-sectional area S1. The value of the water discharge flow rate V1 from the out-of-water water discharge unit 22 is the value obtained by dividing the water discharge flow rate Q2 at at least one underwater discharge port 20 of the underwater water discharge unit 18 by the cross-sectional area S2 of the water discharge port 20. It becomes larger than the water discharge flow rate V2 of.

The control device 40 is connected to an operation unit 26 operated by the user. Further, the control device 40 is electrically connected to the pump 4, the branching device 30, and the like, can transmit and receive electric signals to and from each other, and can electrically operate each of the above-mentioned parts. The control device 40 is attached to the wall surface W in the bathroom. The control device 40 can also be provided on a wall surface or the like outside the bathroom. The control device 40 may be arranged at a position physically separated from the bathroom via the Internet, or is formed by arranging a predetermined program on a storage device such as a server via the Internet. You may. At least a part 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 unit 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, in consideration of the fact that the jet pump unit 140 is provided, the control device 40 has a simultaneous water discharge mode, a water discharge flow rate change mode, a water discharge flow rate change mode of the first modification, and a water discharge flow rate change of the second modification. A control program capable of executing at least one of a mode, an underwater discharge mode, and an out-of-water discharge mode is stored in the storage device.

The bathtub device 101 further includes a branching device 30 provided so as to branch the first flow path 12 and the second flow path 114 from the flow path 10 on the downstream side of the pump. The branching device 30 has an opening area and / or an opening area that opens on the second flow path 114 side so that the opening area that opens on the second flow path 114 side in the branch portion is larger than the opening area that opens on the first flow path 12 side. Alternatively, the adjusting member 32 for adjusting the opening area opened on the first flow path 12 side and the adjusting member control unit 34 for controlling the adjusting member 32 are provided.

Since the branching device 30 in the second embodiment has the same structure as the branching device 30 in the first embodiment, the description thereof will be omitted.
The adjusting member 32 of the branching device 30 makes it possible for the opening area of the branching portion to open on the second flow path 114 side to be larger than the opening area of the branching device 12 on the first flow path 12 side, and the bathtub is supplied to the second flow path 114. The flow rate of water per unit time can be larger than the flow rate of bathtub water supplied to the first flow path 12 per unit time. Since the jet pump unit 140 is provided on the second flow path 114, the jet pump unit 140 increases the flow rate of the bathtub water passing through the second flow path 114. Therefore, the adjusting member 32 of the branching device 30 does not necessarily have to be controlled so that the opening area opened on the second flow path 114 side is larger than the opening area opened on the first flow path 12 side. For example, the adjusting member 32 may be controlled so that the opening area opened on the second flow path 14 side is the same as the opening area opened on the first flow path 12 side, or the adjusting member 32 may be controlled. , The opening area opened on the second flow path 14 side may be controlled to be smaller than the opening area opened on the first flow path 12 side. Even if the flow rate of the bath water supplied to the second flow path 114 per unit time is smaller than or the same as the flow rate of the bath water supplied to the first flow path 12 per unit time. The jet pump unit 140 increases the flow rate of the bath water passing through the second flow path 114, and the flow rate of the bath water supplied to the out-of-water discharge unit 22 per unit time is the flow rate of the bath water supplied to the underwater discharge unit 18. It can be larger than the flow rate per unit time. As described above, even when the jet pump unit 140 is used, the control device 40 controls the adjusting member 32 to discharge the water discharge rate Q1 from the out-of-water water discharge port 24, and the water discharge rate Q2 from the water discharge unit 18. Can be made to spit water. Therefore, in the bathtub device 101, the out-of-water water discharge unit 22 and the water so that the flow velocity V1 of the bathtub water discharged from the out-of-water water discharge unit 22 becomes larger than the flow velocity V2 of the bathtub water discharged from the underwater water discharge unit 18. It is configured to discharge water from the water discharge unit 18 at the same time.
It should be noted that the branching device 30 is omitted without being arranged, and the flow rate of the bathtub water passing through the second flow path 114 is increased by the jet pump unit 140, and the flow rate of the bathtub water supplied to the out-of-water discharge unit 22 is per unit time. The flow rate may be larger than the flow rate per unit time of the bathtub water supplied to the water discharge unit 18. Also in this case, the water discharge port 24 can be used to discharge the water discharge rate Q1, and the water discharge unit 18 can be used to discharge the water discharge rate Q2. Therefore, the branching device 30 may be omitted.

Next, with reference to FIG. 11, the simultaneous water discharge mode by the bathtub device 101 according to the present embodiment will be described.
Since the operation in the simultaneous water discharge mode in the second embodiment is generally the same as the operation in the simultaneous water discharge mode in the first embodiment, the description of the common operation will be omitted, and different operations will be described.

When attempting to start the water discharge operation from the out-of-water water discharge unit 22 by the bathtub device 101, the user operates the operation unit 26 to simultaneously discharge water from the underwater water discharge unit 18 and the out-of-water water discharge unit 22. 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 flow path 6 as shown by the arrow C11. When the bathtub water passes through the collection unit 16, dirt in the bathtub water is collected by the collection unit 16. Then, as shown by the arrow C12, the pump 4 pumps the sucked bathtub water to the downstream side flow path 10 of the pump on the downstream side. When the control device 40 is executing the simultaneous water discharge mode in which water is discharged from the underwater water discharge unit 18 and the out-of-water water discharge unit 22 at the same time, the adjustment member 32 is seconded via the adjustment member control unit 34 of the branch device 30. The opening area opened on the flow path 114 side is controlled to be larger than the opening area opened on the first flow path 12 side. At this time, the branching device 30 opens the communication of the flow path from the pump downstream side flow path 10 to the second flow path 114, and opens the communication from the pump downstream side flow path 10 to the first flow path 12. However, the distribution ratio of the flow rate is changed. Therefore, as shown in FIG. 4, of the bathtub water flowing out from the branching device 30, the flow rate G2 per unit time of the bathtub water supplied to the second flow path 114 is supplied to the first flow path 12. It is made larger than the flow rate G1 per unit time of water.

Since the flow of the bathtub water supplied to the first flow path 12 is the same as that of the first embodiment, the description thereof will be omitted below.

As shown by the arrow C13, the bathtub water supplied to the injection section side flow path 148 of the second flow path 114 passes from the injection section 146 through the jet pump water storage section 142 toward the inside of the bathtub water introduction path 150. Is sprayed. The bathtub water ejected from the injection unit 146 at a high speed forms a jet flow (jet flow), and forms a flow having a high speed and a strong propulsive force in the direction of the opening of the injection unit 146. At this time, the flow of the jetted bathtub water causes a jet pump action, that is, an action of drawing in the surrounding bathtub water by the ejector effect. In the present embodiment, the bath water in the jet pump water storage unit 142 is drawn in with respect to the linear jet as shown by the arrow C13, as shown by the arrow C14. At this time, the flow rate x2 of the bathtub water drawn from the bathtub communication portion 42 is added to the flow rate x1 of the bathtub water jetted from the injection unit 146, and the flow rate of the bathtub water in the bathtub water introduction path 150 having a larger flow rate x3. It 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 the jet pump water storage unit 142 is set to a flow rate larger than the flow rate x1 of the bathtub water injected from the injection unit 146. The flow rate x3 of the bathtub water in the bathtub water introduction path 150 is set to, for example, a flow rate range of 2 to 4 times the flow rate x1 of the bathtub water jetted from the injection unit 146. As described above, the jet pump unit 140 can realize a technique of entraining the bathtub water in the jet pump water storage unit 142 on the downstream side of the injection unit 146 to amplify the discharge water flow rate by using the jet pump operation.

Since the tub water injected from the injection unit 146 draws the tub water flowing from the inside of the tub 2 in the jet pump water storage unit 142, the tub water injected from the injection unit 146 has a low temperature tub water (when used last time). Even when the residual water in the pump 4 or the like is mixed, the water is supplied to the out-of-water discharge unit 22 while drawing in the bath water in the jet pump water storage unit 142, so that the temperature of the bath water in the bath 2 is adjusted. Bath water having a relatively close temperature can be discharged from the out-of-water spouting unit 22. Therefore, it is possible to more reliably suppress the user from feeling cold, and the water discharged from the out-of-water water discharge unit 22 can be used immediately after the start of use of the pump 4, and the startability of the bathtub device 1 can be improved. Can be improved.

As described above, the bathtub water injected from the injection unit 146 draws in the bathtub water in the jet pump water storage unit 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 water force and flow velocity of the bathtub water jetted from the injection unit 146, and reaches the development unit 15. The flow of the bathtub water becomes a flow spread in the left-right direction in the developing portion 15 and reaches the out-of-water discharge portion 22. As shown by the arrow F2 (see FIG. 2 and the like), the bathtub water is discharged like a waterfall from the water discharge port 24 formed long in the left-right direction toward the front side (inside the bathtub). In this way, the bathtub water is discharged as a strip-shaped flow having a width of about the shoulder width, and is relatively evenly applied to the user's neck and shoulders. The bathtub water discharged from the out-of-water discharge unit 22 forms a stable flow of flowing water having a substantially constant width and thickness. The bathtub water discharged from the out-of-water spouting portion 22 can flow so as to spread relatively evenly over a wide range such as the user's neck, shoulders, chest and back, for example, the body of the user in a half-body bath state. It can be warmed so that it does not get cold. The bathtub water supplied to the out-of-water water discharge unit 22 is discharged from the out-of-water water discharge unit 22 at a flow velocity V1. Since the water discharged from the water discharge unit 22 outside the water surface and the flow due to the discharged bathtub water are the same as those in the first embodiment, the description thereof will be omitted below.

Next, the 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 discharge water flow rate change mode in the second embodiment is generally the same as the operation in the discharge water flow rate change mode in the first embodiment, the description of the common operation will be omitted, and different operations will be described.
FIG. 12 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 bathing device according to the second embodiment of the present invention is executing the discharge water flow rate change mode. .. In FIG. 12, the flow rate, the flow velocity, and the opening degree of the flow path in the branching device are shown on the vertical axis, and the time is shown on the horizontal axis. The flow rate in FIG. 12 is an example, and the discharge water flow rate q11 and the water discharge flow rate q15 are shown as an example of the water discharge flow rate Q1 from the out-of-water water discharge unit 22, and the water discharge flow rate q12 is an example of the water discharge flow rate Q2 from the water discharge unit 18. , The discharge flow rate 0 is shown.

The water discharge flow rate change mode is executed by the control device 40 after simultaneous water discharge from the out-of-water water discharge unit 22 and the water discharge unit 18 is executed. The execution of simultaneous water discharge from the out-of-water water discharge unit 22 and the water discharge unit 18 may be executed in the simultaneous water discharge mode, or may be executed in the water discharge flow rate change mode. Since the execution of simultaneous water discharge from the out-of-water water discharge unit 22 and the water discharge unit 18 is the same as the operation in the simultaneous water discharge mode described above, the description thereof will be omitted.

When the discharge water flow rate change mode is executed, the control device 40 causes the pump 4 to be operated so that the flow rate q13 of the bathtub water sucked from the suction port becomes constant at time T0. Further, at time T0, the control device 40 controls the adjusting member 32 to discharge the water discharge rate q11 from the out-of-water water discharge port 24 and discharge the water discharge rate q12 from the water discharge unit 18. At this time, the bathtub device 101 is provided with a jet pump unit 140, and the flow rate q14 is further supplied from the jet pump flow path 144, so that the flow rate of water discharged from the out-of-water water discharge port 24 is increased. Therefore, the relationship of q13 + q14 = q11 + q12 is generally established. At this time, the water discharge flow rate q11 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the water discharge flow rate q12 of the bathtub water discharged from the water discharge unit 18. Further, the flow velocity V11 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity V12 of the bathtub water discharged from the water discharge unit 18. After the execution of the discharge water flow rate change mode is started, the control device 40 keeps the rotation speed of the pump 4 constant and keeps the suction flow rate q13 constant. The control device 40 considers that the flow rate q14 is supplied from the jet pump flow path 144, and determines the water discharge flow rate q11 discharged from the out-of-water discharge port 24 and the water discharge flow rate q12 discharged from the water discharge unit 18. The flow rate is set to a predetermined level. The flow rate q14 is determined according to the flow rate of the bathtub water injected from the injection unit 146.

At time T1, in the control device 40, after the execution of the water discharge flow rate change mode is started, the flow rate V11 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow rate V12 of the bathtub water discharged from the water discharge unit 18. From this state, control is performed to reduce the water discharge flow rate q12 from the water discharge unit 18. Specifically, the control device 40 moves the adjusting member 32 into the first flow path 12, sets the first flow path 12 side to a state of opening 0, closes the first flow path 12, and closes the first flow path 12. The amount of bathtub water supplied to one flow path 12 is reduced to 0, and the water discharge flow rate q12 from the water discharge unit 18 is reduced to 0. 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 out-of-water water discharge port 24 is increased to the water discharge flow rate q15 (q15 = q13 + q14 + α). Since the discharge water flow rate q11 is increased, the flow rate q14 supplied from the jet pump flow path 144 is further increased to the flow rate q14 + α. That is, the control device 40 increases the ratio of the water discharge flow rate from the out-of-water spout port 24, and further increases the flow velocity V1 of the water discharge from the out-of-water spout port 24 to the flow velocity V14.

At times T1 to T2, the control device 40 continues to discharge the water discharge flow rate of the water discharge flow rate q15 from the out-of-water water discharge port 24. In this way, by increasing the flow rate of water discharged from the out-of-water water discharge unit 22 in a predetermined period, the flow rate V11 of the bathtub water discharged from the out-of-water water discharge unit 22 is further increased to obtain a flow rate V14, and the out-of-water water discharge unit 22 is used. The effect of pushing the dirt floating on the water surface into the water can be further strengthened by the water spouting from the water. Therefore, it is possible to push dirt that was difficult to push into the water from the water surface or a relatively large amount of dirt floating on the water surface into the water at the time when the water discharge rate q11 was discharged from the out-of-water spout port 24. Further, the speed of pushing the dirt into the water (speed of removing the dirt) can be increased and the depth of pushing the dirt can be increased, so that the efficiency of removing the dirt can be further improved. At times T1 to T2, the control device 40 is in a state where the water discharge flow rate q12 from the underwater water discharge unit 18 is reduced to 0, that is, a state in which water discharge from the underwater water discharge unit 18 is temporarily stopped. The predetermined period is, for example, the time from time T1 to time T2. The time from the time T1 to the time T2 is set to a period of, for example, a few seconds to a few minutes, so that the stirring flow originally caused by the underwater spouting unit 18 becomes relatively weak, and then intermittently again. After the time T2, the agitation flow in the water by the water spouting unit 18 can be generated relatively strongly, and the generation of dirt stagnation in the water can be efficiently suppressed. By combining such a stirring flow in water with a relatively strong pushing flow discharged from the out-of-water discharge unit 22, dirt can be collected more efficiently by the collection unit 16.
The predetermined period may be continued from time T1 until the end of execution of the discharge water flow rate change mode as long as it is a predetermined period in the control device 40. That is, the discharge water flow rate change mode may be terminated by increasing the water discharge flow rate from the out-of-water discharge unit 22 only once. In this case, after the time T1, the stirring flow caused by the underwater spouting unit 18 continues relatively weakly in the bathtub before the time T1, and this flow is compared with the water discharged from the out-of-water spouting unit 22. Dirt can be collected by the collecting unit 16 by combining it with a strong pushing flow.

At time T2, the control device 40 moves the adjusting 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. It is increased to increase the water discharge flow rate from the water discharge unit 18 from 0 to the water discharge flow rate q12. Since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q15 from the out-of-water water discharge port 24 is reduced to become the water discharge flow rate q11. Therefore, after time T2, while forming a push-in flow by the water discharged from the out-of-water water discharge unit 22, a stirring flow in the water by the water discharge unit 18 is relatively strongly generated, and it is efficient that dirt stagnation occurs in the water. Can be suppressed. Further, at time T2 to time T3, the effect of pushing the dirt floating on the water surface into the water by the water discharge from the out-of-water water discharge unit 22 is continued with a certain effect.

At time T3, the control device 40 again moves the adjusting member 32 into the first flow path 12, puts the first flow path 12 side in a state of opening 0, and closes the first flow path 12. The amount of bathtub water supplied to the first flow path 12 is reduced to 0, and the water discharge flow rate q12 from the water discharge unit 18 is reduced to 0. 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 out-of-water water discharge port 24 is increased to the water discharge flow rate q15. Therefore, the flow velocity V11 of the water discharged from the out-of-water discharge port 24 is further increased to be the flow velocity V14. After that, at times T3 to T4, the control device 40 continues to discharge water at the discharge water flow rate q13 from the out-of-water discharge port 24.

At time T4, the control device 40 moves the adjusting member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and the water discharge flow rate from the underwater water discharge unit 18 is changed from 0 to the water discharge flow rate q12. Increase to. Therefore, the water discharge flow rate q15 from the out-of-water discharge port 24 is reduced to become the water discharge flow rate q11.

In this way, the control device 40 controls the adjusting member 32 to be in the state of the opening degree 0 of the first flow path 12 for a predetermined period, and reduces the water discharge flow rate q12 from the underwater water discharge unit 18 to 0. The water discharge flow rate q11 from the out-of-water discharge port 24 is increased to the water discharge flow rate q15. In the water discharge flow rate change mode, the control device 40 repeatedly executes the control such that the adjusting member 32 is brought into the state of the opening degree 0 of the first flow path 12 over a predetermined engine at least once, more preferably a plurality of times. do. After a lapse of a certain period of time, the control device 40 ends the execution of the water discharge flow rate change mode and returns to the simultaneous water discharge mode.

Next, with reference to FIGS. 11 and 13, the water discharge flow rate change mode of the first modification by the bathtub device 101 according to the second embodiment will be described. Regarding the operation in the discharge water flow rate change mode of the first modification, the description of the operation common to the operation in the discharge water flow rate change mode described above will be omitted, and mainly different parts will be described.
FIG. 13 shows 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 second embodiment of the present invention is executing the water discharge flow rate change mode of the first modification. It is a time chart. In FIG. 13, the flow rate, the flow velocity, and the opening degree of the flow path in the branching device are shown on the vertical axis, and the time is shown on the horizontal axis. The flow rate in FIG. 13 is an example, and the discharge water flow rate q17 and the water discharge flow rate q19 are shown as an example of the water discharge flow rate Q1 from the out-of-water water discharge unit 22, and the water discharge flow rate q16 is an example of the water discharge flow rate Q2 from the water discharge unit 18. , The discharge flow rate q20 is shown.

When the discharge water flow rate change mode of the first modification is executed, the control device 40 causes the pump 4 to operate so that the flow rate q13 of the suction of bathtub water from the suction port becomes constant at time T0. At time T0, the control device 40 controls the adjusting member 32 to discharge water with a water discharge flow rate q16 from the water discharge unit 18. 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 discharge water flow rate q12, and the water discharge flow rate q16 is larger than the discharge water flow rate q12. At this time, since the adjusting member 32 does not adjust the opening degree on the second flow path 114 side in the present embodiment, the opening degree on the second flow path 114 side remains constant. Since the water discharge portion 18 discharges water with a discharge water flow rate q16, the water discharge port 24 discharges water with a discharge water flow rate q17. Since the bathtub device 101 is provided with the jet pump unit 140 and the flow rate q18 is supplied from the jet pump flow path 144, the flow rate of water discharged from the out-of-water water discharge port 24 is increased. Therefore, the relationship of q13 + q18 = q16 + q17 is generally established. At this time, the flow velocity V15 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity V16 of the bathtub water discharged from the water discharge unit 18. The discharge water flow rate q17 is smaller than the discharge water flow rate q11. In this way, the ratio and flow rate of the discharge water flow rate can be changed.

At time T1, in the control device 40, after the execution of the water discharge flow rate change mode is started, the flow rate V15 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow rate V16 of the bathtub water discharged from the water discharge unit 18. From this state, control is performed to reduce the water discharge flow rate q16 from the water discharge unit 18. Specifically, the control device 40 moves the adjusting member 32 so as to close a region of about two-thirds in the first flow path 12 so as to have an opening degree of about one-third. The flow path 12 is brought into a small opening state, the amount of bathtub water supplied to the first flow path 12 is reduced, and the water discharge flow rate q16 from the water discharge unit 18 is reduced to the water discharge flow rate q20. The flow velocity is also reduced from the flow velocity V16 to the flow velocity V17 according to the discharge water flow rate. The discharge water flow rate q20 is, for example, about one-third of the discharge water flow rate q16. 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 from the out-of-water water discharge port 24 is increased from the water discharge flow rate q17 to the water discharge flow rate q19. The discharge water flow rate is q19 (q19 = q13-q20 + q18 + α). That is, the control device 40 increases the ratio of the flow rate of the water discharged from the out-of-water spout 24, and further increases the flow velocity of the water discharged from the out-of-water spout 24 from the flow velocity V15 to the flow velocity V18. Also at this time, the flow velocity V18 of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity V17 of the bathtub water discharged from the water discharge unit 18.

At times T1 to T2, the control device 40 continues to discharge water at the discharge water flow rate q19 (flow velocity V18) from the out-of-water discharge port 24. In this way, by increasing the flow rate of the water discharged from the out-of-water water discharge unit 22 in a predetermined period, the flow velocity of the bathtub water discharged from the out-of-water water discharge unit 22 is increased to the flow velocity V18, and the water is discharged from the out-of-water water discharge unit 22. Therefore, the effect of pushing the dirt floating on the water surface into the water can be further strengthened.

At time T2, the control device 40 moves the adjusting member 32 outward of the first flow path 12 so as to open the first flow path 12 to a substantially fully open state, and the bathtub is supplied to the first flow path 12. The amount of water is increased, and the water discharge flow rate from the water discharge unit 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 out-of-water discharge port 24 is reduced to become the water discharge flow rate q17 (flow velocity V15). Therefore, after the time T2, the dirt pushed in by the pushing flow having a relatively high flow velocity by the flow velocity V15 discharged from the out-of-water water discharge unit 22 is again put into the water by the relatively strong agitation flow in the water by the underwater water discharge unit 18. The dirt can be agitated while efficiently suppressing the formation of dirt stagnation.

At time T3, the control device 40 again moves the adjusting member 32 so as to close a region of about two-thirds in the first flow path 12, puts the first flow path 12 in a small opening state, and underwater. The water discharge flow rate q16 (flow velocity V16) from the water discharge unit 18 is reduced to the water discharge flow rate q20 (flow velocity 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 out-of-water discharge port 24 is increased to the discharge water flow rate q19 (flow velocity V18). After that, the same process is repeated. The control device 40 controls the adjusting member 32 at least once in the discharge water flow rate change mode of the first modification so as to reduce the opening degree in the first flow path 12 over a predetermined engine. More preferably, it is repeated a plurality of times. After a lapse of a certain period of time, the control device 40 ends the execution of the water discharge flow rate change mode of the first modification, and returns to the simultaneous water discharge mode.

Next, with reference to FIGS. 11 and 14, the water discharge flow rate change mode of the second modification by the bathtub device 101 according to the second embodiment will be described. Regarding the operation in the discharge water flow rate change mode of the second modification, the description of the operation common to the operation in the discharge water flow rate change mode described above will be omitted, and mainly different parts will be described.
FIG. 14 shows 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 second embodiment of the present invention is executing the water discharge flow rate change mode of the second modification. It is a time chart. In FIG. 14, the flow rate, the flow velocity, and the opening degree of the flow path in the branching device are shown on the vertical axis, and the time is shown on the horizontal axis. The flow rate in FIG. 14 is an example, and the discharge water flow rate q11 and the water discharge flow rate q15 are shown as an example of the water discharge flow rate Q1 from the out-of-water water discharge unit 22, and the water discharge flow rate q12 is an example of the water discharge flow rate Q2 from the water discharge unit 18. , The discharge flow rate 0 is shown.

When the discharge water flow rate change mode of the second modification is executed, the control device 40 causes the pump 4 to be operated so that the flow rate q13 of the suction of bathtub water from the suction port becomes constant at time T10. After starting the execution of the water discharge flow rate change mode of the second modification, the control device 40 sets the adjusting member 32 to the state of the opening degree 0 of the first flow path 12, closes the first flow path 12, and closes the underwater water discharge unit. The water discharge flow rate from 18 is set to 0. The second flow path 114 side of the branching device 30 remains open. Therefore, the control device 40 makes the discharge water flow rate from the out-of-water discharge port 24 the discharge water flow rate q15 (q15 = q13 + q14 + α) and the flow velocity V14. As described above, only the water discharged from the out-of-water water discharge port 24 can be temporarily executed while the water discharge flow rate change mode of the second modification is being executed.

At times T10 to T11, the control device 40 continues to discharge water at the discharge water flow rate q15 (flow velocity V14) from the out-of-water discharge port 24. In this way, by increasing the flow rate of water discharged from the out-of-water water discharge unit 22 in a predetermined period, the flow rate of the bathtub water discharged from the out-of-water water discharge unit 22 is set to an increased flow rate V14, and the flow rate from the out-of-water water discharge unit 22 is set. The effect of pushing dirt floating on the surface of the water into the water by spouting water can be further strengthened. Therefore, it is possible to push dirt that was difficult to push into the water from the water surface or a relatively large amount of dirt that floats on the water surface into the water at the time when the water is discharged simultaneously from the out-of-water spout port 24 and the water spouting portion 18. In addition, the speed of pushing dirt into the water (speed of removal) can be increased and the depth of pushing dirt can be increased, so that the efficiency of removing dirt can be further improved. At times T10 to T11, the control device 40 is in a state where the flow rate of water discharged from the water discharge unit 18 is reduced to 0, that is, a state in which water discharge from the water discharge unit 18 is temporarily stopped. The predetermined period is, for example, a time from time T10 to time T11. The time from the time T10 to the time T11 can be set longer than the time from the time T11 to the time T12, which will be described later. The time from the time T10 to the time T11 may be set longer than the time from the time T1 to the time T2 described above. For example, the time from the time T10 to the time T11 can be set to be twice or more the time from the time T1 to the time T2. The time from the time T10 to the 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 adjusting member 32 to the outside of the first flow path 12 so as to open the first flow path 12, and the water discharge flow rate from the underwater water discharge unit 18 is changed from 0 to the water discharge flow rate q12. Increase to (flow velocity V12). Since the control device 40 maintains the suction flow rate q13 constant, the water discharge flow rate q15 (flow velocity V14) from the out-of-water discharge port 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 discharged from the out-of-water water discharge unit 22, a stirring flow in the water by the water discharge unit 18 is relatively strongly generated, and it is efficient that dirt stagnation occurs in the water. Can be suppressed. Further, at time T11 to time T12, the effect of pushing the dirt floating on the water surface into the water by the water discharge from the out-of-water water discharge unit 22 is continued with a certain effect.

At time T12, the control device 40 again moves the adjusting member 32 into the first flow path 12 so that the opening degree is 0, closes the first flow path 12, and discharges water from the underwater water discharge unit 18. The flow rate q12 is reduced to 0. 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 out-of-water water discharge port 24 is increased to the water discharge flow rate q15. Therefore, the flow velocity of the water discharged from the out-of-water discharge port 24 is increased from the flow velocity V11 to the flow velocity V14. After that, after the time T12, the control device 40 continues to discharge the water with the discharge water flow rate q15 from the out-of-water discharge port 24. The control device 40 repeatedly controls the adjusting member 32 in a predetermined engine at least once, more preferably a plurality of times, as in the time T10 to the time T12, in the water discharge flow rate change mode of the second modification. After a lapse of a certain period of time, the control device 40 ends the execution of the water discharge flow rate change mode of the second modification, and returns to the simultaneous water discharge mode.

As described above, the control device 40 of the bathtub device 101 according to the present embodiment can execute the simultaneous water discharge mode, the water discharge flow rate change mode, and the like. Therefore, also in the bathtub device 101 according to the second embodiment, the water landing position of the bathtub water discharged from the out-of-water water discharge unit 22 on the water surface in the bathtub 2 is the same as in the case of the bathtub device 1 according to the first embodiment. Since it is changed, the description is omitted.

According to the bathtub device 101 according to the second embodiment of the present invention described above, the flow velocity of the bathtub water discharged from the out-of-water water discharge unit 22 is larger than the flow velocity of the bathtub water discharged from the underwater water discharge unit 18. , The out-of-water spouting unit 22 and the underwater spouting unit 18 are configured to discharge water at the same time. As a result, the pump 4 is changed to a large one so as to increase the circulation flow rate and increase the amount of dirt collected, or the device for collecting the dirt in the water of the bathtub 2 and the dirt on the water surface of the bathtub 2 are caught. It is possible to collect dirt in the water of the bathtub 2 and the water surface of the bathtub 2 without providing a collecting device. Further, according to the above-described configuration, dirt floating on the water surface, which is difficult to be drawn into the water, can be easily pushed into the water by a relatively high-speed water flow discharged from the out-of-water water discharge unit 22. Further, the dirt in the water of the bathtub 2 can be agitated by a relatively low-speed water flow discharged from the water spouting unit 18, and the formation of dirt stagnation in the water can be suppressed, and the dirt can be agitated by the relatively low-speed water flow. It is possible to make it difficult to hinder the formation of a flow for sucking dirt from the suction port 8 into the suction flow path 6. Therefore, the dirt floating on the water surface can be pushed into the water, the stagnation of the dirt in the water can be suppressed, and the efficient suction to the suction flow path 6 can be realized. And the efficiency of collecting dirt on the water surface of the bathtub 2 can be improved.

Further, according to the bathtub device 101 according to the second embodiment of the present invention, the flow rate of the bath water discharged from the out-of-water water discharge unit 22 is discharged from the water discharge unit 18 by the jet pump action of the jet pump unit 140. The flow rate of the tub water discharged from the out-of-water discharge unit 22 is made larger than the flow rate of the tub water discharged from the water discharge unit 18. Further, since the jet pump unit 140 can increase the flow rate of the bathtub water discharged from the out-of-water water discharge unit 22, even if the pump 4 is made smaller, the bathtub water discharged from the out-of-water water discharge unit 22 can be increased. The water discharge flow rate of the bathtub water can be made larger than the water discharge flow rate of the bathtub water discharged from the water discharge unit 18. This makes it possible to make the pump 4 smaller, increase the degree of freedom in arranging the pump 4 between the bathtub 2 and the wall surface W, the casing 21, etc., and secure an area for arranging the pump. Can be miniaturized.

The embodiment for carrying out the present invention is not limited to the above, and further other modifications can be applied. For example, the bathtub applied to the first embodiment and / or the second embodiment of the present invention is not only the bathtub 2 formed into a quadrangle such as a rectangle when viewed from above, but also a bathtub of another form, for example, an elliptical shape. It can be changed to a bathtub with a bow, a moon-shaped bathtub, a circular bathtub, etc. For example, as shown in FIG. 15, the bathtub can be changed to a bow-covered moon-shaped bathtub 202. As shown in FIG. 15, in a top view, a first region A1 and a second region A2, which are bisected bathtub 202 in the longitudinal direction, are defined. Since the bathtub 202 has a bow-stretched moon shape when viewed from above, the longitudinal direction L is the direction along the side 202f of the bow-stretched portion (left-right direction of the paper surface). The first region A1 is a region of the bathtub 202 on one side with respect to the center line B that bisects the bathtub 202 along the longitudinal direction L (the region on the left side of the paper in FIG. 15). The second region A2 is a region of the bathtub 202 on the opposite side of the center line B that bisects the bathtub 202 along the longitudinal direction (the region on the right side of the paper in FIG. 15). In the bathtub 202, the underwater spouting portion 18 and the out-of-water spouting portion 22 are provided in the second region A2, and the suction port 8 is provided in the first region A1 on the opposite side of the center line B. When the underwater spouting portion 18 is provided in the first region A1, the suction port 8 is provided in the second region A2 on the opposite side of the center line B.

Further, for example, the bathtub device according to the first embodiment and / or the second embodiment of the present invention may include, instead of the branching device 30, a flow rate control unit that controls at least the flow rate of water discharged from the water discharge unit 18. good. The flow rate control unit is, for example, an electromagnetic valve provided on the first flow path 12, but may be another flow rate control device capable of adjusting the flow rate of the bathtub water supplied to the first flow path 12. .. The flow rate control unit controls to reduce the flow rate of water discharged from the water discharge unit 18 for a predetermined period while the flow rate of suction of bathtub water from the suction port 8 is constant. The flow rate control unit is electrically connected to the control device 40, and by the control of the flow rate control unit by the control device 40, 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 of the second modification are performed. It is possible to execute a flow rate change mode or the like.

1 Bathtub device 2 Bathtub 4 Pump 6 Suction port 8 Suction port 10 Pump downstream flow path 12 1st flow path 14 2nd flow path 16 Collection section 18 Underwater spout section 20 Underwater spout port 22 Out-of-water spout section 24 Out-of-water spout section Water spout 28 Squeezing part 30 Branching device 30a Flow path 32 Adjusting member 34 Adjusting member Control unit 101 Bathtub device 102 Bathtub 114 Second flow path 140 Jet pump unit 142 Jet pump water storage part 142b Top surface 146 Injection part 202 Bathtub

Claims (9)

A bathtub device installed in a bathtub
A pump that sucks in the bathtub water in the bathtub and supplies this bathtub water to the downstream side,
A suction flow path extending from the suction port to the pump while forming a suction port in the bathtub,
The downstream flow path of the pump extending downstream from the above pump,
The first flow path branched from the downstream flow path of the pump and
The second flow path branched from the flow path on the downstream side of the pump and
An underwater spouting unit that forms an underwater spout in the bathtub and discharges bathtub water supplied from the first flow path into the water in the bathtub from the underwater spout.
An out-of-water spouting unit that forms an out-of-water spout above the water surface of the bathtub and discharges bathtub water supplied from the second flow path into the bathtub from the out-of-water spout.
It is provided on the suction flow path and is provided with a dirt collecting section for collecting dirt in the bathtub water passing through.
Water is discharged from the out-of-water spouting section and the underwater spouting section at the same time so that the flow velocity of the bathtub water discharged from the out-of-water spouting section is larger than the flow velocity of the bathtub water discharged from the underwater spouting section. A bathtub device that is configured to. 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 discharge flow rate Q1 at at least one of the out-of-water spouts of the out-of-water spouting portion is discharged. The bathtub device according to claim 1, wherein the value divided by the water outlet cross-sectional area S1 is larger than the value obtained by dividing the water discharge flow rate Q2 at at least one of the underwater discharge portions by the water discharge port cross-sectional area S2. The bathtub device according to claim 2, wherein the first flow path includes a throttle portion for narrowing the cross section of the flow path in the flow path on the upstream side of the underwater spout. Further, a branching device provided so as to branch the first flow path and the second flow path from the downstream flow path of the pump is provided.
The branching device has an opening area that opens to the second flow path side and / or the first so that the opening area that opens to the second flow path side in the branch portion is larger than the opening area that opens to the first flow path side. 1 Adjusting member that adjusts the opening area that opens on the flow path side, and
The bathtub device according to claim 2 or 3, further comprising an adjusting member control unit that controls the adjusting member. Further, at least a flow rate control unit for controlling the flow rate of water discharged from the water discharge unit is provided.
The flow rate control unit controls to reduce the flow rate of water discharged from the water discharge unit for a predetermined period while the pump is operated so that the flow rate of the bathtub water sucked from the suction port becomes 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 water discharge unit for a predetermined period while the pump is operated so that the flow rate of suction of bathtub water from the suction port is constant. The bathtub device according to claim 4, which controls. The bathtub device according to any one of claims 1 to 6, wherein the water landing position of the bathtub water discharged from the out-of-water spouting portion on the water surface in the bathtub is changed. From a top view, the bathtub is defined as a first region and a second region obtained by bisecting the bathtub in the longitudinal direction.
When the underwater spouting portion is provided in the first region, the suction port is provided in the second region, and when the underwater spouting portion is provided in the second region, the suction port is provided in the second region. The bathtub device according to any one of claims 1 to 7, which is provided in one area. Further, a jet pump unit provided on the second flow path is provided.
The above jet pump unit is
The jet pump water storage section, which stores the bathtub water drawn by the jet pump action,
A jet pump flow path that connects the bathtub and the jet pump water storage section and forms a flow path that allows the bathtub water to be introduced into the jet pump water storage section.
An injection unit having an opening area smaller than the cross-sectional area of the water passage of the second flow path on the upstream side of the jet pump water storage unit, accelerating the supplied bathtub water and injecting it into the jet pump water storage unit. , Equipped with
The second flow path is formed so that the opening area of the second flow path extending downstream of the jet pump water storage section is larger than the opening area of the injection section.
The bathtub device according to any one of claims 1 to 8, wherein the dirt collecting portion is provided on the suction flow path or the jet pump flow path.

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