JP2012170769A - Jet bath apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jet bath apparatus which generates jet flow that gives appropriate massage feeling on the shoulder and the hip of a person taking a bath while reducing the number of circulation pumps.SOLUTION: In the jet bath apparatus, a circulation flow path 32 is provided for circulating hot water within a bathtub 31 by means of a circulation pump P. The circulation flow path 32 is branched downstream of the circulation pump P. Jet nozzle apparatuses 1a and 1b are arranged respectively on end parts of branched paths 32a and 32b. The plurality of jet nozzle apparatuses 1a and 1b are arranged so that the former is above the latter. The branched paths 32a and 32b and/or the jet nozzle apparatuses 1a and 1b are configured such that jet flow volume from the lower jet nozzle apparatus 1b is larger than that from the upper jet nozzle apparatus 1a.

Description

  The present invention relates to a jet bath apparatus in which hot water in a bathtub is circulated and jetted from a jet nozzle apparatus.

  As this type of conventional jet bath apparatus, for example, those described in Patent Document 1 and Patent Document 2 below are known.

Japanese Patent No. 2761036 No. 7-13711

  The jet bath apparatus described in Patent Document 1 is connected to a bathtub main body with a plurality of bath water circulation channels provided with circulation pumps, and an air intake unit is connected to each bath water circulation channel. While being able to eject the hot water mixed with bubbles into the bathtub body from a plurality of locations, the number of rotations of each circulation pump can be controlled via the control unit. As a result, the jet form and jet strength can be changed depending on the location of the body on which the jet hits, for example, by applying a finger pressure blow with a low jet amount of bath water from the jet nozzle and a high jet pressure on the foot side. While being able to give an acupressure effect, a stimulating massage effect can be given to the back side by applying a mild blow with a large amount of bath water jetted from the jet nozzle and a low jet pressure.

  Moreover, the jet bath apparatus described in Patent Document 2 includes a bath hot water circulation pipe and a circulation pump arranged outside the bathtub, and the bath hot water circulation pipe is a foot-side jet nozzle that opens at the lower part of the front and rear side walls of the bathtub. And the back-side ejection nozzle, and the ejection angle of each nozzle can be adjusted by making the angle adjusting cylinder and the stem relatively movable.

  By the way, there are many requests for a higher massage effect on the back, and in particular, there is a strong demand for an optimal massage effect around the waist and shoulders. Many such users often seek relatively soft stimuli around the shoulders, while seeking intense and intense stimuli around the waist.

  The above-mentioned Patent Document 1 discloses an embodiment in which two ejection nozzles are arranged on the left and right sides on the back side and the foot side, respectively, but there is no difference in the jet flow form from these two ejection nozzles, and 2 Since the vertical heights of the two jet nozzles are the same, the jet flow around the bather's waist and the jet around the shoulder cannot be optimally controlled. Furthermore, by providing a plurality of sets of circulation channels and circulation pumps, it is possible to change the jet form and strength of the jets to a plurality of locations, but the piping cost of the circulation channel and the installation cost of the circulation pump increase. There is a problem.

  Also, in Patent Document 2, an embodiment in which two ejection nozzles are arranged on the left and right sides on the back side and the foot side is disclosed, but the vertical heights of the two ejection nozzles are the same. Therefore, the jet flow around the waist of the bather and the jet flow around the shoulder cannot be optimally controlled.

  Therefore, the present invention makes it possible to generate a jet around the waist of the bather and a jet around the shoulder, while simplifying the structure and cost by using a common circulation pump. An object of the present invention is to provide a jet bath apparatus that can be reduced and that can change the strength of the jet around the shoulder and the circumference of the waist while being a jet generated by a common circulation pump. And

  In order to achieve the above object, the present invention takes the following technical means.

  That is, the jet bath apparatus of the present invention includes a circulation flow path for circulating hot water in a bathtub by a circulation pump, and the circulation flow path is branched into at least two branch paths on the downstream side of the circulation pump. A jet nozzle device for jetting hot water into the bathtub is provided at the end of the nozzle, and the plurality of jet nozzle devices are arranged vertically, and jets from the jet nozzle device below the upper jet nozzle device Each branch path and / or each jet nozzle device is configured to increase the flow rate (Claim 1).

  According to the jet bath device of the present invention, the upper jet nozzle device is disposed on the bathtub side wall so as to jet the jet around the shoulder of the bather, and the lower jet nozzle device is connected to the waist of the bather. By arranging it on the side wall of the bathtub so as to inject the jet to the periphery, a strong jet with a large jet flow is generated around the waist, and a relatively strong massage feeling is obtained. By generating a small weak jet, a feeling of massage with relatively weak stimulation can be obtained, so that the bather can bathe more comfortably. In addition, since the circulation pump for generating the jet flow from the upper and lower jet nozzle devices is shared and the circulation flow path is branched downstream of the circulation pump, the cost of simplifying the piping configuration and reducing the number of circulation pumps Reduction is achieved.

  In the jet bath apparatus of the present invention, each branch path is configured such that the flow path resistance from the circulation pump to the upper jet nozzle apparatus is larger than the flow path resistance from the circulation pump to the lower jet nozzle apparatus. Thus, it is possible to make the ejection flow rate from the lower jet nozzle device larger than that of the upper jet nozzle device. For example, the branch path to the lower jet nozzle device is configured linearly, while the branch path to the upper jet nozzle device is disposed vertically upward via a T-shaped branch pipe, or The flow path resistance difference as described above can be provided by, for example, making the flow path diameter of the branch path to the jet nozzle apparatus on the side larger than the flow path diameter to the upper jet nozzle apparatus.

  According to this, the strength of the jet flow from the upper and lower jet nozzle devices can be varied depending on the configuration of the branch path, and the adjustment work at the construction site is simplified by designing the structure of each branch path in advance. This will improve mass productivity and stabilize performance.

  Further, in the jet bath apparatus of the present invention, each jet nozzle apparatus includes an orifice, and the upper jet stream is formed by making the orifice diameter of the lower jet nozzle apparatus larger than the orifice diameter of the upper jet nozzle apparatus. The ejection flow rate from the jet nozzle device on the lower side than the nozzle device can be increased (claim 3).

  According to this, it is possible to optimally set the strength of the jet flow from the upper and lower jet nozzle devices while simplifying the structure. Furthermore, if the orifice is configured to be detachable and replaceable, it can be easily adjusted by replacing the orifice so that it has the optimal jet strength at the time of construction, and the bather can replace the orifice according to his / her preference. It is also possible to do so.

  Further, in the jet bath device of the present invention, each jet nozzle device includes an orifice for generating a jet and a rotary nozzle body having a jet nozzle for jetting the jet from the orifice into the bathtub, and a lower jet The jet holes of the respective rotary nozzles may have different structures so that the jets ejected into the bathtub from the jet nozzle device above the nozzle device are dispersed in a relatively wide range (claims). 4). Examples of the structure of such jet holes include, for example, making the diameter of the jet holes in the upper jet nozzle apparatus larger than that in the lower jet nozzle apparatus, or lowering the number of jet holes in the upper jet nozzle apparatus. Increase the jet angle of the jet hole with respect to the axis of the rotary nozzle in the upper jet nozzle device to be larger than that in the lower jet nozzle device, etc. it can.

  According to this, a stronger massage feeling can be given to the bather's waist by jetting the jet from the lower jet nozzle device having a relatively large flow rate more intensively than the upper jet. On the other hand, the jet flow from the upper jet nozzle device with a relatively low flow rate can be given to the bather with a massage feeling that wraps the entire shoulder by dispersing it over a wider area compared to the lower side. More comfort.

  As described above, according to the jet bath device according to claim 1 of the present invention, the upper jet nozzle device is disposed on the bathtub side wall so as to jet the jet around the bather's shoulder, and the lower side The jet nozzle device is installed on the side wall of the bathtub so as to inject the jet around the waist of the bather, thereby generating a strong jet with a large jet flow around the waist and obtaining a relatively strong massage feeling. In addition, a weak jet flow with a small jet flow rate is generated around the shoulder to obtain a massage feeling that is relatively weak, so that the bather can bathe more comfortably. In addition, since the circulation pump for generating the jet flow from the upper and lower jet nozzle devices is shared and the circulation flow path is branched downstream of the circulation pump, the cost of simplifying the piping configuration and reducing the number of circulation pumps Reduction is achieved.

  Moreover, according to the jet bath apparatus which concerns on Claim 2 of this invention, the strength of the jet from an upper and lower jet nozzle apparatus can be varied with the structure of a branch path, and the structure of each branch path is designed beforehand. By doing so, the adjustment work at the construction site can be simplified, so that mass productivity can be improved and performance can be stabilized.

  Moreover, according to the jet bath apparatus which concerns on Claim 3 of this invention, it becomes possible to set the strength of the jet from an upper and lower jet nozzle apparatus optimally, aiming at the simplification of a structure. Furthermore, if the orifice is configured to be detachable and replaceable, it can be easily adjusted by replacing the orifice so that it has the optimal jet strength at the time of construction, and the bather can replace the orifice according to his / her preference. It is also possible to do so.

  Moreover, according to the jet bath apparatus which concerns on Claim 4 of this invention, by jetting the jet flow from the lower jet nozzle apparatus with comparatively much flow volume intensively compared with the upper side, a bather's waist | hip | lumbar part A stronger massage feeling can be given. On the other hand, the jet flow from the upper jet nozzle device with a relatively low flow rate can be given to the bather with a massage feeling that wraps the entire shoulder by dispersing it over a wider area compared to the lower side. More comfort.

It is a rear view of the jet bath apparatus concerning one embodiment of the present invention. It is a top view of the jet bath apparatus. It is a side view of the same jet bath apparatus. It is the sectional view on the AA line of FIG. It is a whole perspective view of a jet nozzle device. It is a longitudinal cross-sectional view of the same jet nozzle apparatus. It is a longitudinal cross-sectional view which shows the replacement | exchange operation | work process of the rotation nozzle main body of the same jet nozzle apparatus. It is an enlarged front view of the rotary nozzle body of the jet nozzle device, where (a) shows the rotary nozzle body of the upper jet nozzle device, and (b) shows the rotary nozzle body of the lower jet nozzle device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a jet bath device 30 according to an embodiment of the present invention. A bath 31 having a rectangular shape in a plan view that is long before and after an adult can take a bath up to a shoulder in a sitting position, and hot water in the bath 31. Is circulated by the circulation pump P. A water intake adapter 33 attached to either the left or right side wall of the bathtub 31 is provided at the upstream end of the circulation flow path 32, and hot water in the bathtub 31 is absorbed by the circulation pump P from the water intake adapter 33. It is like that. The circulation pump P is driven by power supply from the power supply device 35, and can be turned on and off by a switch 36 provided on the upper portion of the bathtub 31. The power supply device 35 is preferably disposed behind the ceiling.

  Further, the circulation flow path 32 is branched into two upper and lower branch paths 32a and 32b by a branch pipe 34 on the downstream side of the circulation pump P, and hot water is jetted into the bathtub 31 at the end of each branch path 32a and 32b. Jet nozzle devices 1a and 1b are provided. The two jet nozzle devices 1a and 1b are arranged one above the other, and the upper jet nozzle device 1a generates a jet that envelops the entire shoulder of the bather bathing in the bathtub 31, while the lower jet nozzle device 1b. Is configured to generate a relatively strong jet near the center of the bather's waist.

  First, each of the jet nozzle devices 1a and 1b will be described. Each of the jet nozzle devices 1a and 1b is attached to the rear side wall 2 of the bathtub 31 and generates a jet in the bathtub 31 from the circulating flow circulated by the circulation pump P. Is. In this embodiment, the inner side of the side wall 2 is referred to as “front side”, and the rear side of the side wall 2 is referred to as “back side”.

  As shown in FIGS. 5 to 8, each of the jet nozzle devices 1 a and 1 b is attached and fixed to a discharge pipe 4 provided with an orifice 3 disposed on the back side of the side wall 2 and the front side of the discharge pipe 4. A nozzle cover 5, a rotating nozzle body 6 accommodated in the nozzle cover 5, and a nozzle holding member 7 for holding the rotating nozzle body 6 in the nozzle cover 5.

  The discharge pipe 4 includes a cylindrical outer cylinder portion 8 that is open on the front side and closed on the back side, an inner cylinder portion 9 that is concentrically disposed on the outer cylinder portion 8 and has a smaller diameter than the outer cylinder portion 8; A hot water supply port 10 communicating with the inner cylinder 9 and an air supply port 11 provided in the outer cylinder 8 so as to communicate with the space between the outer cylinder 8 and the inner cylinder 9 are provided. It is integrally formed of a resin material. The hot water supply port portion 10 and the inner cylinder portion 9 present an elbow pipe connected at a substantially right angle. The orifice 3 is detachably fitted to the inner cylinder part 9, and the front side end of the outer cylinder part 8 extends to the front side rather than the front side end part of the orifice 3.

  The nozzle cover 5 includes a cylindrical housing cylinder 12 that covers the outer peripheral side of the rotary nozzle body 6, and the housing cylinder 12 is inserted into a mounting hole 13 provided in the bathtub side wall 2 from the front side of the side wall 2. It is screwed to the outer cylinder portion 8 of the discharge pipe 4. Further, the nozzle cover 5 includes a flange portion 12a provided at the front side end portion of the housing cylinder portion 12, while the flange portion 8a is similarly provided at the front side end portion of the outer cylinder portion 8, The jet nozzle device 1 is attached and fixed to the side wall 2 by sandwiching the side wall 2 via the packing 14 by the flange portions 8a and 12a. A receiving portion 15 having a diameter larger than that of the orifice 3 and having a concentric flow hole with respect to the orifice 3 is provided at the rear side end portion of the housing cylinder portion 12. A gap for air introduction is formed between the receiving portion 15 and the orifice 3 and is supplied from the air supply port portion 11 by the negative pressure of the hot water jet injected from the orifice 3 into the nozzle cover 5. The air is drawn through the space between the outer cylinder portion 8 and the inner cylinder portion 9 and can be injected as a mixed jet mixed with air.

  The rotating nozzle body 6 has a truncated cone shape as a whole, is rotatably accommodated in the accommodating cylinder portion 12 of the nozzle cover 5, and is provided concentrically with the orifice 3. A conical recess 6 a into which a jet flow ejected from the orifice 3 is introduced is formed on the back surface of the rotary nozzle body 6. Further, as shown in FIG. 8, the rotating nozzle body 6 is provided with a jet hole 16 communicating from the back side to the front side. A plurality of the jet holes 16 are provided. In particular, in the present embodiment, three are provided in the upper jet nozzle apparatus 1a and two are provided in the lower jet nozzle apparatus 1b. Then, an opening is formed in the recess 6a. The plurality of jet holes 16 are provided at equal intervals in the circumferential direction with respect to the center of the axis of the rotary nozzle body 6, and each jet hole 16 faces and rotates outward in the axial direction from the back side to the front side. It is formed so as to face in the direction opposite to the rotation direction of the nozzle body. The back surface of the rotary nozzle body 6 is abutted and supported from the back side by the receiving portion 15 of the nozzle cover 5, and the inner peripheral edge of the receiving portion 15 protrudes from the front side, and the protruding portion 15a is the concave portion 6a. It is fitted inside. A concave portion 6 b is formed in the axial center portion of the front surface of the rotary nozzle body 6.

  The nozzle holding member 7 includes an annular mounting ring portion 18 that is screwed onto the front side end portion of the accommodating cylinder portion 12 of the nozzle cover 5, and a rod-like support portion 19 that is diametrically laid on the ring portion 18. And an opening between the ring portion 18 and the support portion 19 serves as a jet outlet. On the back side of the central portion of the support portion 19, there is provided a fulcrum portion 20 that comes into contact with the recess 6b. The fulcrum part 20 is constituted by a convex part protruding from the back side of the support part 19. The fulcrum part 20 and the recessed part 6b are formed such that the shaft center is slightly curved and protrudes or is recessed. The tightening rotation direction when the nozzle holding member 7 is screwed and the rotation direction of the rotary nozzle body 6 during operation of the apparatus are made to coincide with each other, so that the nozzle holding member 7 loosens and falls off during operation. Is preventing.

  The operation of the jet nozzle devices 1a and 1b will be described. When the circulating pump P is operated, the hot water at a predetermined flow rate supplied to the hot water supply port 10 of the discharge pipe 4 becomes a predetermined pressure at the orifice 3 and is a rotating nozzle. It is discharged into the back side recess 6 a of the main body 6. At this time, it is mixed with the air supplied from the air supply port 11 to the space between the outer cylinder part 8 and the inner cylinder part 9 to become a mixed jet, and this mixed jet further passes through the jet hole 16 of the rotary nozzle body 6. It is injected into the bathtub through.

  At this time, since the jet holes 16 are shifted in the circumferential direction between the positions of the opening on the back side and the opening on the front side and provided with a twist with respect to the surface of the rotating nozzle body 6, hot water passes through the jet holes 16. When it is injected into the bathtub, a moment for rotating the rotary nozzle body is applied by the reaction force of the injection. Further, the center of the front surface of the rotary nozzle body 6 is pressed against the fulcrum portion 20 by the pressure of the jet flow from the orifice 3 acting on the back side of the rotary nozzle body 6, and thus the rotary nozzle body 6 is point-supported from the front surface. In this state, the pressure of the jet is applied to the back surface, and the rotating nozzle body 6 is aligned by rotating the rotating nozzle body 6 by the above-described moment. Therefore, the axial center position where the rotating nozzle body 6 is fixed. The rotating nozzle body 6 can be smoothly rotated with a constant axis by the pressure balance of the jet flow, etc., without having to provide a shaft to be held at. It can be rotated. Further, since the shaft support structure is not required on the orifice 3 side, the structure of the orifice 3 can be simplified and the orifice 3 can be easily attached and detached. Moreover, when it is desired to change to a different massaging jet according to the user's preference, the nozzle holding member 7 can be removed as shown in FIG. 7 to easily and quickly change to the rotating nozzle body 6 having a different structure. The maintenance is very good so that the user can get an optimal massage feeling.

  In the jet bath apparatus 30 of the present embodiment, the flow path resistance of the flow path from the circulation pump P to the orifice 3 of the upper jet nozzle apparatus 1a is such that the orifice 3 of the lower jet nozzle apparatus 1b from the circulation pump P. The branch passages 32a and 32b and the upper and lower jet nozzle devices 1a and 1b are configured so as to be larger than the flow passage resistance of the flow passage leading up to The flow rate of the jet is configured to be larger than the flow rate of the jet from the upper jet nozzle device 1a.

  Specifically, the lower branch path 32b is linearly connected to the upstream pipe line 32c of the branch pipe 34, while the upper branch path 32a is perpendicular to the pipe line 32c. The pipe is arranged so as to rise upward, and the flow rate of the lower branch path 32b is set to be larger than the flow rate of the upper branch path 32a due to the difference in the pipe configuration. In addition, in the present embodiment, by making the hole diameter of the orifice 3 in the lower jet nozzle apparatus 1 larger than the hole diameter of the orifice 3 in the upper jet nozzle apparatus 1, a larger flow rate difference is obtained. It is trying to occur.

  Thus, even if there is only one circulation pump P, the flow rate of the jet flow around the waist of the bather can be made larger than the flow rate of the jet flow around the shoulder to give a strong massage feeling to the waist.

  Further, in the present embodiment, the jet holes 16 of the respective rotary nozzle bodies 6 are arranged so that the jets jetted into the bathtub from the jet nozzle device 1a above the lower jet nozzle device 1b are dispersed in a relatively wide range. The structure is different. Specifically, the number of jet holes 16 in the rotary nozzle body 6 of the upper jet nozzle device 1a is larger than the number of jet holes 16 in the rotary nozzle body 6 of the lower jet nozzle device 1b, and the upper jet flow. The diameter of the jet hole 16 of the nozzle apparatus 1a is made larger than the diameter of the jet hole 16 of the lower jet nozzle apparatus 1a, and thereby the opening area of the flow path of the jet stream downstream of the orifice 3 is higher than the lower side. The jet nozzle device 1a is enlarged. Further, the jet hole 16 of the upper jet nozzle device 1a is formed so as to be greatly inclined with respect to the axial center so that the jet injection direction is more radially outward than the jet hole 16 of the lower jet nozzle device 1b. As a result, the jet jetted from the upper jet nozzle device 1a is dispersed while spreading outward in the radial direction, while the jet jetted from the lower jet nozzle device 1b is localized. It is comprised so that a simple jet jet may be produced.

  The present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. For example, if a sufficient flow rate difference is obtained due to the difference in the piping configuration of the upper and lower branch passages, the hole diameters of the upper and lower orifices may be the same, and if a sufficient flow rate difference is obtained due to the hole diameter difference between the upper and lower orifices. For example, the piping configuration of the upper and lower branch paths can be made substantially the same. Moreover, in the said embodiment, although the jet nozzle apparatus which injects a mixed jet with air was illustrated, the jet nozzle apparatus which injects the jet of only the hot water which does not mix air may be sufficient.

DESCRIPTION OF SYMBOLS 1a Upper jet nozzle apparatus 1b Lower jet nozzle apparatus 2 Bathtub side wall 3 Orifice 6 Rotating nozzle body 16 Jet hole 30 Jet bath apparatus 31 Bathtub 32 Circulation flow path 32a Upper branch path 32b Lower branch path P Circulation pump

Claims (4)

  A circulation flow path for circulating hot water in the bathtub by a circulation pump is provided. The circulation flow path is branched into at least two branch paths on the downstream side of the circulation pump, and hot water is jetted into the bathtub at the end of each branch path. The plurality of jet nozzle devices are arranged one above the other so that the flow rate from the jet nozzle device on the lower side is larger than that on the upper jet nozzle device. A jet bath apparatus, wherein each jet nozzle apparatus is configured.   The jet bath apparatus according to claim 1, wherein each branch passage is set such that a flow path resistance from the circulation pump to the upper jet nozzle apparatus is larger than a flow path resistance from the circulation pump to the lower jet nozzle apparatus. A jet bath apparatus characterized in that the jet flow rate from the lower jet nozzle apparatus is larger than that of the upper jet nozzle apparatus.   2. The jet bath apparatus according to claim 1, wherein each jet nozzle apparatus includes an orifice for generating a jet, and the orifice diameter of the lower jet nozzle apparatus is made larger than the orifice diameter of the upper jet nozzle apparatus. A jet bath apparatus characterized in that the jet flow rate from the lower jet nozzle apparatus is larger than that of the upper jet nozzle apparatus.   The jet bath apparatus according to claim 1, wherein each jet nozzle apparatus includes an orifice for generating a jet and a rotary nozzle body having a jet nozzle for jetting the jet from the orifice into the bathtub, and a lower jet A jet bath apparatus characterized in that the jet holes of the respective rotary nozzles have different structures so that a jet jetted into the bathtub from the jet nozzle apparatus above the nozzle apparatus is dispersed in a relatively wide range.

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