JP3314161B2 - Nozzle device for jet bath and jet bath using the nozzle device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jet bath in which a mixed jet of hot water (including water) and air is jetted into hot water in a bathtub to generate a jet jet. The present invention relates to a nozzle device capable of jetting while rotating into hot water of a bathtub, and a jet bath using the nozzle device.

[0002]

2. Description of the Related Art Conventionally, a nozzle device for a jet bath, which is provided on a side wall of a bathtub and injects a mixed jet of hot water and air into the hot water in the bathtub to generate a jet jet, includes a fixed jet type and a rotary jet type. The jet type is known. The fixed jet type nozzle device 51 is, for example, as shown in FIG.
An outlet joint 54 is attached to the side wall of the bathtub via a packing 52, a media bond 53, and the like. A rear end (outside the bathtub) of the outlet joint 54 has an orifice 5
5, and a unit valve pipe 58 having a hot water supply port 56 and an air supply port 57 is screwed.

A nozzle slide plate 59, a nozzle guide tube 60 and a spring 6 are provided inside the jet port joint 54.
1, a nozzle 62 having a jet hole 62a is provided. The nozzle 62 is configured so that its angle is manually adjusted, and the tip side (inside the bathtub) of the jet hole 62 a of the nozzle 62 is covered with a unit jet port cover 63. In the nozzle device 51, the hot water supply port 56
In the bath tub supplied from the nozzle is supplied to the jet hole 62a of the nozzle 62 at a predetermined pressure via the orifice 55, and the air supplied from the air supply port 57 is mixed with the hot water to form a mixed jet. Generated. Then, the mixed jet is jetted into the bathtub from the jet hole 62a of the nozzle 62 set at a predetermined angle manually, thereby generating a jet jet in the bathtub.

On the other hand, as a rotary jet type nozzle device,
For example, it is disclosed in JP-A-1-214365. This nozzle device is configured such that a blade is provided in an outlet of a nozzle, a groove in which a bearing is mounted is provided in the nozzle, and the outlet moves along the groove. Then, the blade is rotated by a water flow jetted from the jet port, so that the jet port is rotationally moved and the direction of the jet port is changed.

[0005]

However, in the fixed jet type nozzle device 51, since the mixed jet hits a part of the body of the bather in a spot manner, the jet becomes monotonous and easily gets bored, There was a problem that it was inferior in the comfort of bathing in a whirlpool bath, such as itching and tickling sensation, and it was difficult to obtain a sufficient massage effect.

In a rotary jet type nozzle device, since the jet direction of the mixed jet changes, the effect that the jet is not monotonous can be obtained, but the jet port is rotated by a bearing or the like. At the same time, the blades receive the pressure of the water flow and the nozzles rotate, so that the rotation of the nozzles is likely to be discontinuous, and since the nozzles are supported by the spherical surface, the jets are jetted with the pressure at the time of injection of the mixed jet. Stable rotation of the jet (nozzle), such as when the mouth is sucked and rotation becomes impossible (ie, stable rotary jet)
Is difficult to obtain.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a comfortable jet bath bath, a sufficient massage effect, and a stable rotary jet. Is to provide a nozzle device for a jet bath that can easily obtain the nozzle device. A second object of the present invention is to provide a nozzle device for a jet bath in which a sharp rotary jet can be easily obtained, in addition to the first object of the present invention. It is another object of the present invention to provide a jet bath nozzle device which can provide a sensation of hitting and a better massage effect, in addition to the objects of the first or second aspect of the present invention.

The object of the invention described in claim 4 is, in addition to the object of the invention described in claims 1 to 3, for a jet bath in which one nozzle device can enjoy both a fixed jet type and a rotary jet type. To provide a nozzle device.
Further, the object of the invention described in claim 5 or 6 is as described in claim 1.
Another object of the present invention is to provide a jet bath nozzle device capable of generating a large amount of stable air bubbles regardless of the amount of hot water in a bathtub. A seventh aspect of the present invention, in addition to the first to sixth aspects of the present invention, is a nozzle device for a jet bath, which further stabilizes the rotation of the nozzle body and provides a more sufficient massage effect. The object of the invention described in claim 8 is to provide, in addition to the object of the invention described in claim 7, a nozzle device for a jet bath capable of obtaining a more sharp rotating jet.

It is another object of the present invention to provide a jet bath using a nozzle device capable of easily obtaining a jet flow shape according to the sense of the human body and allowing a more comfortable jet bath bathing. . Another object of the present invention is to provide a jet bath using a nozzle device capable of improving workability of cleaning the inner surface of a bathtub in addition to the object of the present invention.

[0010]

In order to achieve the above object, according to the first aspect of the present invention, an outer shape is substantially circular, a shaft is disposed at a position of a shaft center thereof, and a jet hole is provided therein. A nozzle body having a jet port of the jet hole which is eccentric from the axial center position, an orifice disposed behind the nozzle body and jetting hot water in a bathtub into the jet port of the nozzle main body at a predetermined pressure, and a nozzle main body. A jet port cover disposed in front of the jet port of the nozzle body, supports the shaft of the nozzle body at least one of the orifice and the jet port cover, and rotates the nozzle body around the shaft by the jet jet from the orifice. Thereby, the jet direction of the jet flow jetted from the jet port is changed.

[0011] With this configuration, the hot water in the bathtub is injected into the jet hole of the nozzle body through the orifice at a predetermined pressure and mixed with, for example, air to form a mixed jet. Is injected into the bathtub.
At this time, since the jet port of the nozzle body is provided at a position eccentric with respect to the axial center position, the nozzle body at least one end of which is supported by the orifice or the jet port cover by the jet pressure of the jet flows around the shaft. Rotate. As a result, a rotating jet in which the jet direction of the jet changes can be obtained, and comfortable jet bathing can be performed, and a sufficient massage effect can be obtained. In addition, since the outer shape of the nozzle body is substantially circular and at least one end rotates around a shaft rotatably supported by an orifice or a jet port cover, a complicated rotating mechanism is not required, and stable rotation is easy. Is obtained.

Further, the invention according to claim 2 is characterized by comprising a jet strength changing means capable of changing the flow rate of hot water supplied to the orifice. With this configuration, when the flow rate of the hot water supplied to the orifice is changed by the jet strength changing means, the rotation speed of the nozzle body is changed according to this flow rate. When the flow rate is small, the jet becomes a gentle jet, and a sharp jet can be easily obtained.

Further, the invention according to claim 3 is characterized in that it comprises an intermittent jet generating means which can make the jet injected from the jet port an intermittent jet. With this configuration, the jet can be intermittently jetted by the intermittent jet generation means, so that, for example, a striking jet can be easily obtained to obtain a better massage effect, and a sharp jet can be obtained. As a result, the comfort of whirlpool bathing is further improved.

Further, the invention according to claim 4 is characterized by comprising a stopper means for inhibiting rotation of the nozzle body and fixing it at a predetermined position. With this configuration, the rotation of the nozzle body can be inhibited by the stopper means and fixed at a predetermined position, so that one nozzle device can enjoy both the rotating jet and the fixed jet, Bath bath comfort is further improved.

The invention according to claim 5 is characterized in that a fixed nozzle is arranged between the nozzle body and the orifice. According to the invention according to claim 6, the tip of the fixed nozzle is
It is characterized in that it is disposed with a predetermined gap inside a jet hole formed in the nozzle body and with a predetermined gap. With this configuration, when the nozzle body rotates, the water pressure due to the amount of hot water in the bathtub received from the gap formed in the outer peripheral portion of the nozzle body is reduced by the fixed nozzle disposed between the nozzle body and the orifice. Therefore, there is no influence on the negative pressure when the mixed jet is generated in the nozzle body, and a large amount of stable air bubbles are generated regardless of the amount of hot water in the bathtub. At this time, by making the tip end of the fixed nozzle enter a predetermined dimension with a predetermined gap inside the upstream side of the jet hole of the nozzle body, the influence of the water pressure is further reduced.

The invention according to claim 7 is characterized in that the jet holes of the jet holes are two holes. With this configuration, for example, since two jet ports are provided at symmetrical positions with respect to the center, the rotation itself of the nozzle body is stabilized, and a sharp jet can be obtained more easily.

The invention according to claim 8 is characterized in that the diameters of the two jet holes are different. With such a configuration, since the jet states ejected from the two jet ports are different, a sharp jet can be more easily obtained, and the rotational state of the nozzle body can be felt by the jet. Massage effect is also obtained.

According to a ninth aspect of the present invention, there is provided a jet bath for jetting a jet into a bath tub from a nozzle device mounted on a side wall of a bath tub. Is arranged, the jet port of the internal jet hole is eccentric from the axial center position, and the shaft has an orifice arranged behind the nozzle body and a jet port cover arranged in front of the jet port of the nozzle body. At least one has a nozzle body rotatably supported, and the nozzle device is provided in at least one of the foot side, the back side, and the lateral side of the bathtub, and the shape of the jet port of each nozzle body is adapted to the sense of the human body. It is characterized in that it has been set accordingly.

With this configuration, for example, the feet whose sensitivity is sensitive are massaged by the jets jetted from, for example, two jet ports of the nozzle body provided on the foot side of the bathtub, and the nozzles provided on the back side. Since the back, whose sensation is insensitive, can be massaged by a jet jetted from, for example, one jet port of the main body, a jet form according to a bather's sense can be realized in the bathtub, and a good massage effect can be easily obtained.

[0020] The invention according to claim 10 is characterized in that the nozzle device has a cleaning function of cleaning the inner surface of the bathtub by the jet flow. With such a configuration, for example, a jet from a nozzle device in which the injection pressure and the injection direction are appropriately set can be jetted onto the inner surface of the bathtub, so that the jet can remove dirt on the inner surface of the bathtub. In addition, the work of cleaning the bathtub becomes easy.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 14 show an embodiment of a nozzle device according to the present invention, FIG. 1 is a schematic configuration diagram of a jet bath using the nozzle device, FIG. 2 is a sectional view of the nozzle device, and FIGS. Is a half sectional view, a left side view, and a right side view of the nozzle body, and FIGS. 6 to 8 show modified examples of the nozzle body, similar to FIGS. 3 to 5, a half sectional view, a left side view, and a right side view. 9 is a half cross-sectional view of the orifice, FIG. 10 is a left side view thereof, FIGS. 11 to 13 are front views showing examples of the outlet cover, and FIG. 14 is a graph showing the relationship between the flow rate and the rotation speed.

In FIG. 1, the whirlpool 1 has a side wall 2
a bathtub 2 having a predetermined number (six in the figure) of nozzle devices 3 mounted at a predetermined position a, and hot water (water) in the bathtub 2
A pump unit 4 composed of a plurality of pumps 4a for circulating
A control device 5 for controlling the operation of the pump section 4 is provided. The nozzle device 3 is provided on the side walls 2 on the foot side and the back side of the bathtub 2.
The two nozzle devices 3 are mounted on the left and right side walls 2a, respectively, and each nozzle device 3 is connected to a predetermined pump 4a of the pump unit 4 via a water supply pipe 6.
Further, for example, an intake port 7 is provided on the back side wall 2a of the bathtub 2.
The intake port 7 is connected to each pump 4 a of the pump unit 4 via an intake pipe 8.

In addition, for example, an operation switch and a flow rate adjusting knob (not shown) are provided at the upper corner of the back of the bathtub 2.
An operation panel 9 having the same is provided, and this operation panel 9 is connected to the input side of the control device 5. The control device 5 includes, for example, a storage unit 10 that stores a jet mode, a pattern, and the like, a main control unit 11 including a microcomputer, and the like, and sends a predetermined control signal to the pump unit 4 according to an operation signal of the operation panel 9. Output,
Each pump 4a is operated under predetermined conditions, for example, to vary the strength of the jet. By the operation of each of the pumps 4a, hot water in the bathtub 2 is drawn from the water intake port 7, and the hot water is jetted from the nozzle device 3 into the bathtub 2, whereby a jet stream of a predetermined form is generated in the bathtub 2. become.

The position and number of the nozzle devices 3 to be installed in the bathtub 2 are not limited to this example. For example, the nozzle devices 3 on the left and right side walls 2a of the bathtub 2 can be omitted, and the control device 5 can be omitted. Is not limited to the operation panel 9 but can also be performed by operating a remote controller 12 connected to the control device 5 by infrared rays, for example.

Next, a specific structure of the nozzle device 3 will be described. The nozzle device 3 is, as shown in FIG.
A jet port joint 16 attached to the opening 15 of the side wall 2a of the bathtub 2 via a packing 17 and a media bond 18 or the like.
And a thread portion of the unit valve pipe 19 is screwed into a thread portion of the jet port joint 16. A hot water supply port 20 and an air supply port 21 are provided in the unit valve pipe 19, and an orifice 22 is provided downstream of the hot water supply port 20.
Are fixed with screws.

A unit outlet cover 23 is provided inside the outlet joint 16, and a nozzle body 24 is rotatably accommodated in the unit outlet cover 23 as follows. . That is, the nozzle body 24
Has a circular outer shape, a jet hole 25 penetrating substantially in the axial direction therein, and a shaft 26 disposed at an axial center position. The upstream side (orifice 22 side) of the jet hole 25 is formed to have a large diameter, and two jet ports 27a and 27b are formed at the distal end side which is the downstream side.

The two-hole nozzle device 3 having the jet holes 27a and 27b is connected to the foot side of the bathtub 2 and the left and right side walls 2.
a, and a single-hole nozzle device 3 having one jet hole 27a without a jet hole 27b is mounted on the back side wall 2a of the bathtub 2; Since it is the same as the two-hole nozzle device 3, its description is omitted.

The jet ports 27a, 27b of the nozzle body 24
Are formed symmetrically with respect to the center of the position eccentric to the outside of the axial center position of the nozzle body 24, as shown in FIGS. 3 to 5, and each of the jet ports 27a, 27b is located outward from the axial center position. It is formed so as to be directed in the direction and in the direction opposite to the rotation. A large diameter portion 24 is provided at the rear end of the nozzle body 24.
The large-diameter portion 24a is in sliding contact with the inner surface of the unit outlet cover 23, and the large-diameter portion 24a prevents the nozzle body 24 from blurring during rotation.

Further, the nozzle body 24 is provided with a projection 24b at the tip in the jet direction, and the tip surface of the projection 24b is substantially in contact with a jet port cover 28 described later.
A stopper wall 23a (see FIG. 2) is provided at the rear end of the unit outlet cover 23 in which the nozzle body 24 is accommodated and arranged.
4 is prevented from being sucked in the direction of the orifice 22. In addition, the stopper wall 23 of the unit jet port cover 23
a can of course be omitted in some cases.

The nozzle body 2 shown in FIGS.
In FIG. 4, the hole diameters of the two jet ports 27a and 27b are set to be the same. For example, as shown in FIGS. 6 to 8, one of the two jet ports 27a and 27b has a larger inner diameter. The hole diameter can also be made different, such as by reducing the inner diameter of the other jet port 27b. By doing so, the strength of the mixed jet itself jetted from the two jet ports 27a and 27b can be obtained.

As shown in FIG. 2, the shaft 26 supporting the nozzle body 24 is rotatably inserted into a shaft hole 24c on the tip side of the nozzle body 24 and protrudes to the outside on the tip side of a predetermined dimension. At the same time, the rear end side is rotatably supported by the shaft support hole 22a of the orifice 22. The tip end of the shaft 26 is rotatably supported by a shaft support hole 28a of the jet port cover 28 which is fitted and fixed to the concave portion 23b of the unit jet port cover 23 with screws or the like (not shown).

Thus, the nozzle body 24 is rotatably supported in the unit outlet cover 23 by the shaft 26 provided at the axial center position.
As shown in FIG. 11, the jet outlet cover 28 is formed by a ring-shaped base 28b and three rod-shaped support portions 28c, and the jet outlets 27a, 27b are provided on the front side of the nozzle body 24.
A large opening is formed so as not to disturb the injection of the mixed jet from the support portion 28c, and the junction 2 of the three support portions 28c is formed.
The shaft support hole 28a is formed in 8d.

As shown in FIGS. 9 and 10, the orifice 22 has a large-diameter hole 22b on the upstream side.
Downstream of the hole 22b, two discharge holes 22c communicating with the hole 22b are formed. And the orifice 22
Discharges the hot water supplied from the hot water supply port 20 of the unit valve pipe 19 toward the nozzle body 24 at a predetermined pressure from the discharge hole 22c, and the hot water and the air supplied from the air supply port 21 of the unit valve pipe 19 The mixing jet is formed by mixing, and the mixed jet is jetted into the bathtub 2 through the jet holes 25 (jet ports 27a and 27b) of the nozzle body 24.

Next, the operation of the nozzle device 3 will be described. First, when the operation switch of the operation panel 9 is turned on, each of the pumps 4 a of the pump section 4 is controlled by a control signal of the control device 5.
Is activated, and hot water in the bathtub 2 is taken from the water intake port 7,
This hot water is supplied to each pump 4a via the water intake pipe 8. The hot water supplied to each of the pumps 4a is adjusted by the operation of the pump 4a corresponding to the set conditions such as the flow rate adjusting knob of the operation panel 9, and a predetermined flow of hot water is supplied to the unit valve pipe 19 of each nozzle device 3 by the hot water supply. Each is supplied to the mouth 20.

The hot water supplied to the hot water supply port 20 as shown by the arrow A in FIG. 2 is given a predetermined pressure by the orifice 22, and is discharged from the discharge hole 22c into the jet hole 25 of the nozzle body 24 as shown by the arrow B. You. The discharged hot water mixes with the air supplied from the air supply port 21 of the unit valve pipe 19 as shown by arrow C to form a mixed jet, and this mixed jet flows through the jet hole 25 of the nozzle body 24 as shown by arrow D. The flow is injected into the bathtub 2 from the two jet ports 27a and 27b as indicated by an arrow E.

At this time, the pressure of the mixed jet flow is
Outlets 27a, 27 oriented in the direction opposite to the rotational direction of
b on the inner surface of the nozzle body 24.
Rotates around the shaft 26 in the direction of the arrow (see FIG. 4). The number of revolutions of the nozzle body 24 changes depending on the flow rates of both hot water and air (mixed jets in the bathtub 2) supplied to the hot water supply port 20 of the unit valve pipe 19.

FIG. 14 is a graph showing the relationship between the flow rate and the number of revolutions of the nozzle body 24.
(Liter / minute), the number of revolutions of the nozzle body 24 can be varied between approximately 500 and 1100 (rpm). Therefore, by controlling the operating condition (rotation speed) of each pump 4a by the control device 5 and securing a predetermined flow rate,
The rotation speed of the nozzle body 24 is set to a predetermined value, and a mixed jet having a predetermined strength is obtained.

As described above, in the nozzle device 3 of the above embodiment, the shaft 26 is disposed at the axial position of the nozzle body 24 having a substantially circular outer shape, and the tip end of the shaft 26 is connected to the shaft of the jet port cover 28. The support hole 28 a and the rear end side are rotatably supported by the shaft support hole 22 a of the orifice 22.
Since a and 27b are provided eccentrically with respect to the axial center position, the nozzle body 24 can be rotated about the shaft 26 by the jet flow discharged from the orifice 22.

As a result, the position of the mixed jets jetted from the two jet ports 27a, 27b of the nozzle body 24 is not fixed, and a rotary jet jet is produced while the mixed jets are rotating while rotating. Is not continued to be stimulated, and even a bather who has a sharp skin sensation feels relatively little stimulation by the mixed jet, so that, for example, the skin does not become itchy.

Further, the jet intensity can be varied by changing the rotation speed of the nozzle body 24 only by adjusting the flow rate of the hot water by the control device 5, so that the jet intensity can be easily adjusted. In addition, a mixed jet according to a bather's feeling can be easily generated. Further, since the mixed jets jetted from the two jet ports 27a and 27b of the nozzle body 24 can be rotated while having an angle, the hot water in the bathtub 2 can be agitated by the mixed jets. The temperature of the hot water in the inside can be made uniform, and the mixed jets are jetted from the two jets 27a and 27b, respectively, so that there is more sharpness compared to, for example, a case having three or more jets. A mixed jet can be obtained.

The two jet ports 27 of the nozzle body 24
If the hole diameters of a and 27b are different, each of the jet ports 27a, 2b
7b, the mixed jet itself jetted from the nozzle 7b can have a difference in intensity, and a sharper mixed jet can be easily obtained, and the rotational state of the nozzle body 24 can be sensed by the mixed jet, thereby providing a massage effect. Is also obtained. From these, comfortable whirlpool bathing becomes possible, and it becomes possible to easily obtain a sufficient massage effect.

The nozzle body 24 has two jet ports 27.
Since a and 27b are provided symmetrically with respect to the center and eccentric from the center and oriented in the direction opposite to the rotation direction, the pressure due to the jet can be accurately received at the jet ports 27a and 27b, and the nozzle body Since the shaft 26 is supported at both ends, the rotation of the nozzle body 24 can be stabilized. In particular, since the projection 24b is provided on the tip end side of the nozzle body 24 and the projection 24b is brought into contact with the merging portion 28d of the jet port cover 28 with a small area, the resistance due to friction is reduced, and the rotation of the nozzle body 24 is stabilized. And a reduction in rotation speed can be reduced.

The large diameter portion 2 is provided at the rear end of the nozzle body 24.
Since the nozzle 4a is provided and slidably contacts the inner surface of the unit outlet cover 23 with a predetermined area, it is possible to reliably prevent the nozzle body 24 from rotating when rotating. Further, since the rear end side of the shaft 26 of the nozzle body 24 is supported by the shaft support hole 22a at the center position of the orifice 22, the jet flow discharged from the discharge hole 22c of the orifice 22 flows along the outer peripheral surface of the shaft 26, The flow of the jet in the nozzle body 24 can also be stabilized. For these reasons, it is possible to further stabilize the rotation of the nozzle body 24 and to maintain a stable rotation operation for a long period of time.

Further, a shaft 26 is disposed at the axis of the nozzle main body 24, and the front end of the shaft 26 is supported by the shaft support hole 28 a of the jet outlet cover 28, and the rear end of the shaft 26 is supported by the shaft support hole of the orifice 22. Since the nozzle 22a is supported, components such as bearings are not required for the rotation mechanism of the nozzle body 24, and the configuration of the rotation mechanism itself can be simplified. Further, the jet port 27a of the nozzle body 24,
Since 27b has two holes, it is possible to obtain an inexpensive nozzle device 3 with a simple configuration, such as easy processing.

The nozzle device 3 can be disassembled by removing the jet port cover 28 from the concave portion 23b of the unit jet port cover 23 and extracting the shaft 26 of the nozzle body 24 from the shaft support hole 22a of the orifice 22. At the same time, the maintenance work of the nozzle device 3 can be easily performed, for example, the assembly can be performed simply by inserting the rear end side of the shaft 26 into the shaft support hole 22a of the orifice 22 and attaching the jet port cover 28 to the recess 23a. Will be possible.

Further, since the jet port cover 28 has a large opening formed on the front side thereof by the three rod-shaped support portions 28c, the jet port 27a of the nozzle body 24,
The jet port cover 28 does not hinder the jet of the mixed jet from the nozzle 27b, and a good jet state can be obtained.

The present invention is not limited to the above embodiment, but may include the following various modifications. That is, first, in the above embodiment, the jet port cover 2
8 and three support portions 28c are equally spaced in the circumferential direction.
Although the two openings are formed, for example, as shown in FIG. 12, one of the three openings may be closed to provide a shielding part 30 as an intermittent jet generation means. In this case, an intermittent jet in which the injection of the mixed jet is stopped by the shielding unit 30 is obtained, and a better massage effect is obtained by the hitting stimulus by the intermittent jet, and the mixed jet is more sharply obtained. Therefore, the comfort at the time of bathing in the whirlpool can be further improved.

As shown in FIG. 13, a shielding plate 32 having a shielding portion 32a having substantially the same shape as the supporting portion 28c of the cover 28 is rotatably provided on the back side of the jet port cover 28. By rotating the nozzle 32 from the state shown in FIG. 13A as indicated by the arrow G, the area (shielding width) of the opening formed by the support portion 28c is changed so that the intensity of the mixed jet to be injected is varied. You may comprise.

In the above embodiment, the case where the nozzle body 24 is constantly rotated by the jet flow has been described. However, as shown by a two-dot chain line in FIG.
A stopper 31 of an appropriate shape for inhibiting rotation of the nozzle 4 may be provided, and the stopper 31 may be operated manually or automatically by a control signal of the control device 5 to fix the nozzle body 24 at a predetermined position. In this case, one nozzle device 3 can enjoy both the rotary jet and the fixed jet,
The comfort at the time of bathing in the jet bath is further improved, and the jet direction of the nozzle device 3 having the stopper 31, for example, is fixed in a direction not directly hitting the human body (side direction of the bathtub 2), thereby fixing the mild jet. Bathing is also possible.

Further, in the above embodiment, the large-diameter portion 24a is provided on the rear end side of the nozzle main body 24. However, the large-diameter portion 24a is omitted and the outer peripheral surface of the nozzle main body 24 and the unit outlet cover 23 are formed. They may be arranged with a predetermined gap between the inner surfaces. In this case, the area of contact of the nozzle body 24 with other members during rotation is further reduced, so that a reduction in rotation speed can be further prevented.

Further, in the above-described embodiment, the description has been given mainly of the case where a jet effect is generated in the bathtub 2 by the six nozzle devices 3 to obtain a massage effect or the like. The mixed jet sprayed while being sprayed can be used for cleaning the inner surface of the bathtub 2 after bathing. In this case, for example, the amount of hot water in the bathtub 2 is set smaller than the amount of hot water at the time of bathing, the injection pressure of the mixed jet is increased, and the strong mixed jet is rotated toward the inner surface of the bathtub 2 (or in the injection direction). (Fixed in the direction of the inner surface of the bathtub 2). Thus, the hair and the like adhering to the inner surface of the bathtub 2 are automatically washed away by the mixed jet, and the bathtub 2 after bathing can be easily cleaned.

In the above embodiment, the nozzle body 24 and the shaft 26 are configured to be rotatable with respect to each other. However, the shaft 26 may be integrated with the nozzle body 24, for example. In this case, by restricting the axial movement of the shaft 26 by the shaft support hole 22a of the orifice 22, suction of the nozzle body 24 due to negative pressure can be prevented. Furthermore, it is of course possible to integrate the nozzle body 24 with the shaft 26 and the orifice 22 in the above embodiment, and the shaft 26 of the nozzle body 24 is supported by the orifice 22 and the jet port cover 28 in a cantilever state. It is also possible to make it.

FIG. 15 shows another embodiment of the nozzle device according to the present invention. Hereinafter, the same portions as those in the above embodiment will be described by assigning the same reference numerals. The feature of this embodiment is that a fixed nozzle 33 is disposed between the nozzle body 24 and the orifice 22. That is, the fixed nozzle 33 has a small-diameter front end portion 33a and a large-diameter rear end portion 33b, and a hole 34 is formed inside the fixed nozzle 33 along the external shape and penetrating in the axial direction.

The fixed nozzle 33 is located at the rear end 3
3b is fixed to the stopper wall 23a of the unit outlet cover 23 by an appropriate means such as an adhesive, a screw, or a concave and convex fit, and the outer peripheral surface of the tip portion 33a is attached to the back surface of the nozzle body 24 (orifice). 22) orifice 22
A predetermined gap 35 is provided on the inner surface of the jet hole 25 having an inner diameter slightly larger than the outer diameter of the jet hole 25, and the tip portion 33a is fixedly arranged in a state in which the tip of the jet portion 25 enters a predetermined dimension L into the jet hole 25. As a result, the fixed nozzle 33 is
4 and is fixedly arranged between the orifices 22. The fixing means of the fixed nozzle 33 is not limited to the fixing to the stopper wall 23a, but may be, for example, screwed to the front outer peripheral surface of the orifice 22.

In the embodiment shown in FIG. 15 (this embodiment) and the embodiment shown in FIG.
According to the nozzle device 3 of the embodiment without the above (hereinafter, referred to as the above embodiment), the jet discharged from the orifice 22 generates a negative pressure in the process of being injected from the nozzle body 24 into the bathtub 2, Air is sucked from an air supply port 21 provided in the bath as shown by an arrow C, and a bubble mixed jet is jetted into the bathtub 2. When the bubble mixed jet is jetted, the nozzle main body 24 rotates to generate a rotary jet.

By the way, in the above-mentioned embodiment, the inventors carefully studied the gap 36 formed between the outer peripheral surface of the nozzle body 24 and the inner surface of the unit outlet cover 23.
When the gap 36 is extremely small, the rotation of the nozzle main body 24 becomes unstable, and in some cases, the rotation of the nozzle main body 24 stops, and it has been found that a stable rotary jet can not be obtained from the nozzle device 3. On the other hand, if the gap 36 is too wide, the water pressure of the hot water in the bathtub 2 acts on the upstream side of the jet port 25 of the nozzle body 24 from the gap 36, adversely affecting the negative pressure when generating the mixed jet, and causing air bubbles. It has been found that the generation amount of air bubbles is remarkably reduced, and this reduction of air bubbles becomes more remarkable as the amount of hot water in the bathtub 2 increases.

Therefore, based on such a study result, this embodiment and the normal type (the fixed nozzle 33 of this embodiment) were used.
When an experiment on the air flow rate was performed for the type having no gaps) and the closed type (type in which the normal type gap was filled with tape), the results shown in FIGS. 16 and 17 were obtained. 16 shows a case where the water level in the bathtub 2 is full (400 mm from the water surface to the center of the nozzle body 24), and FIG. 17 shows a case where the water level in the bathtub 2 is half (from the water surface to the center of the nozzle body 24). 110 mm). Levels 1 to 5 are the input DC voltage value of the pump 4a (however, the power supply voltage is constant),
= 18.5V, level 2 = 21.0V, level 3 = 2
3.5V, level 4 = 25.6V, level 5 = 28.0
V is shown.

From the graphs of FIGS. 16 and 17, the nozzle device 3 of this embodiment has an increased air flow rate and a changed water level as compared with the normal type and the closed type nozzle device 3. In this case, while the normal type greatly changes the air flow rate, the present embodiment maintains a certain air flow rate (the change is small).
Therefore, according to the nozzle device 3 of this embodiment, even if the amount of hot water in the bathtub 2 changes, a large amount of stable air bubbles can always be generated, and a more sufficient massage effect can be obtained.

The reason why the air flow rate does not change significantly in this embodiment is that the fixed nozzle 33 is disposed between the nozzle body 24 and the orifice 22 and the tip 33a of the fixed nozzle 33 is connected to the jet hole 25 of the nozzle body 24. By having a predetermined gap 35 on the upstream side of the nozzle body and entering a predetermined dimension L, the influence of the water pressure in the bathtub 2 received through the gap 36 on the outer peripheral surface side of the nozzle body 24 as shown by an arrow H in FIG. It is considered that the pressure can be reduced by the fixed nozzle 33.

The experimental results shown in FIGS. 16 and 17 are comparisons of the rotary type nozzle device 3 according to the present invention. Needless to say, a sufficient massage effect and the like can be obtained as described in the above embodiment as compared with the conventional example shown in FIG. Also in this embodiment, in addition to obtaining substantially the same operation and effect as the above-described embodiment, by appropriately setting the shape of the fixed nozzle 33 and the positional relationship with the jet hole 25 of the nozzle body 24, The operation and effect that the gap between the nozzle body 24 and the inner surface of the unit outlet cover 23 can be easily managed is also obtained.

The nozzle body 24, the unit outlet cover 23, and the outlet cover 2 in each of the embodiments described above.
8. The shape of each member such as the shaft 26, the form of the jet, the fixing structure of the fixed nozzle 33, and the like are merely examples, and can be variously changed without departing from the gist of each invention according to the present invention.

[0062]

As described above in detail, according to the first aspect of the present invention, the jet port injected from the orifice into the jet port of the nozzle body is shifted to a position eccentric with respect to the axial center position. Since the provided nozzle body rotates around the shaft, it is possible to easily obtain a rotating jet in which the jet direction of the mixed jet changes while rotating, enabling comfortable jet bath bathing and sufficient massage. The effect can be obtained. In addition, since the outer shape of the nozzle body is substantially circular and at least one end rotates around a shaft supported by the orifice or the jet port cover, a stable rotary jet can be easily obtained, such as a complicated rotary mechanism being unnecessary. be able to.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the flow rate supplied to the orifice can be varied by the jet intensity varying means.
By changing the rotation speed of the nozzle body according to the flow rate, a violent mixed jet can be generated when the flow rate is high, and a gentle mixed jet can be generated when the flow rate is low, and a sharp mixed jet can be generated. Can be easily obtained, and a better Marsurge effect can be obtained.

According to the third aspect of the present invention, in addition to the effects of the first or second aspect, the intermittent jet can be generated by the intermittent jet generating means. A certain jet can be easily obtained, a better massage effect can be obtained, and a sharp jet can be obtained, so that the comfort of whirlpool bathing can be further improved.

According to the fourth aspect of the present invention, in addition to the effects of the first to third aspects, the nozzle body can be prevented from rotating by the stopper means and fixed at a predetermined position. In addition, both the rotary jet and the fixed jet can be enjoyed by one nozzle device, and the comfort of bathing in the jet bath can be further improved.

According to the fifth or sixth aspect of the present invention, in addition to the effects of the first to fourth aspects, the fixed nozzle is disposed between the nozzle body and the orifice. The water pressure in the bathtub received from the gap formed in the outer peripheral portion can be reduced by the fixed nozzle, and particularly, the leading end of the fixed nozzle enters a predetermined size inside the upstream side of the jet hole of the nozzle body with a predetermined gap. By doing so, the influence of the water pressure can be reduced, and a large amount of stable air bubbles can be generated irrespective of the amount of hot water in the bathtub, so that a more sufficient massage effect can be obtained.

According to the seventh aspect of the invention, in addition to the effects of the first to sixth aspects, for example, since two jet ports are provided at symmetric positions with respect to the center position, the nozzle main body is provided. The rotation itself can be stabilized, and a sharp jet can be more easily obtained, so that the massage effect can be further enhanced.

According to the eighth aspect of the present invention, in addition to the effect of the seventh aspect of the present invention, since the jet states of the jets jetted from the two jet ports are different, a sharp jet can be easily obtained. In addition to this, the rotating state of the nozzle body can be sensed by the jet, and a massage effect can be obtained.

According to the ninth aspect of the present invention, the nozzle device provided on the foot side of the bathtub is provided with, for example, two jet ports, and massages a sensitive foot with the jet jet from the jet port. Since, for example, one jet port is provided in the nozzle device provided on the back side, and the back whose sensitivity is insensitive can be massaged by the jet jet from this jet port, it is possible to realize a jet form corresponding to the sense of the human body, A simple massage effect can be easily obtained.

According to the tenth aspect of the invention, in addition to the effect of the ninth aspect, the inner surface of the bathtub is cleaned by jetting the jet jet from the nozzle device toward the inner surface of the bathtub. Therefore, it is possible to easily perform a cleaning operation in the bathtub after bathing.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a jet bath using a nozzle device according to the present invention.

FIG. 2 is a sectional view of the nozzle device.

FIG. 3 is a half sectional view of the nozzle body.

FIG. 4 is a left side view of the same.

FIG. 5 is a right side view of the same.

FIG. 6 is a cross-sectional view showing a modified example of the nozzle main body in a partially half cross-section.

FIG. 7 is a left side view of the same.

FIG. 8 is a right side view of the same.

FIG. 9 is a half sectional view of the orifice.

FIG. 10 is a left side view of the same.

FIG. 11 is a front view of the spout cover.

FIG. 12 is a front view showing a modified example of the jet outlet cover.

FIG. 13 is a front view showing another modified example of the jet outlet cover.

FIG. 14 is a graph showing the relationship between the flow rate and the number of revolutions.

FIG. 15 is a partially half-sectional view showing another embodiment of the nozzle device according to the present invention.

FIG. 16 is a graph showing a test result of the air flow rate.

FIG. 17 is a graph showing another test result of the air flow rate.

FIG. 18 is a sectional view of a conventional nozzle device.

[Explanation of symbols]

 1 ... Jet bath 2 ... Bath tub 2a ... Side wall 3 ... Nozzle device 4 ... ······· Pump unit 4a ········ Pump 5 ······· Control device 7 ··························· Spout port joint 19 Unit valve piping 20 Hot water supply port 21 Air supply port 22 Orifice 22a ······· Shaft support hole 23 ······· Unit jet outlet cover 23a ······ Stopper wall 24 ·········· Nozzle body 24b ····· ····· Projection 25 ························· Shaft 27a, 27b ······································ a ····· Shaft support hole 30 ······························ Stopper 32 ······························· · Shielding part 33 ············································································・ ・ ・ Gap L ・ ・ ・ ・ ・ ・ ・ ・ ・ Dimensions

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-214365 (JP, A) JP-A-63-1135 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B05B 3/04 A47K 3/00 B05B 7/04 A61H 23/00

Claims (10)

(57) [Claims] 1. A nozzle body having a substantially circular outer shape, a shaft disposed at an axial center thereof, and having a jet hole therein, wherein the jet port of the jet hole is eccentric from the axial center position, and the nozzle main body. An orifice disposed at the back of the nozzle for injecting hot water in a bathtub into the jet hole of the nozzle body at a predetermined pressure, and a jet port cover disposed in front of the jet port of the nozzle main body, and a shaft of the nozzle main body. Supporting at least one of the orifice and the jet port cover, and rotating the nozzle body about a shaft with the jet jet from the orifice to change the jet direction of the jet jet from the jet port. Characteristic nozzle device for jet bath. 2. The nozzle device for a jet bath according to claim 1, further comprising a jet strength changing means for changing a flow rate of hot water supplied to said orifice. 3. The nozzle device for a jet bath according to claim 1, further comprising an intermittent jet generating means capable of setting the jet injected from the jet port to an intermittent jet. 4. The nozzle device for a jet bath according to claim 1, further comprising stopper means for inhibiting rotation of the nozzle body and fixing the nozzle body at a predetermined position. 5. The nozzle device for a jet bath according to claim 1, wherein a fixed nozzle is disposed between the nozzle body and the orifice. 6. The fixed nozzle according to claim 1, wherein a tip portion of the fixed nozzle has a predetermined gap and is inserted into an upstream side of a jet hole formed in the nozzle body with a predetermined gap. Item 6. A nozzle device for a jet bath according to item 5. 7. The nozzle device for a jet bath according to claim 1, wherein the jet holes of the jet holes are two holes. 8. The nozzle device for a jet bath according to claim 7, wherein the two jet holes have different hole diameters. 9. A jet bath for jetting a jet into a bathtub from a nozzle device mounted on a side wall of a bathtub, wherein the nozzle device has a substantially circular outer shape, and a shaft is disposed at a position of an axial center thereof, and an internal jet hole is provided. Is eccentric from the axial center position, and its shaft is rotatably supported by at least one of an orifice disposed behind the nozzle body and a jet port cover disposed in front of the nozzle port of the nozzle body. The nozzle device is provided at at least one of the foot side, the back side and the side side of the bathtub, and the form of the jet port of each nozzle body is set according to the sense of the human body. Jet bath using a nozzle device. 10. The jet bath using the nozzle device according to claim 9, wherein the nozzle device has a cleaning function of cleaning an inner surface of the bathtub by the jet flow.