JP2005118434A - Water flow massage apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deliver a large amount of bubbleless jet water flow into a bathtub at a strong water force even if a delivery pressure from a nozzle is small, to provide a strong massage effect, and to reduce the installation cost and the operation cost in a bubbleless type water flow massage apparatus. <P>SOLUTION: This water flow massage apparatus is provided with a delivery guide cylinder 10 employing its front end as a water outlet 10a, a pressurized water jetting nozzle 21 coaxially disposed inside the delivery guide cylinder 10, suction water outlets 8 opened in the circumference of the nozzle 21 in the delivery guide cylinder 10, a suction water passage 9 guiding bathtub water W from the outside of the delivery guide cylinder 10 to the suction water outlets 8, a circulating channel C guiding the bathtub water W to the nozzle 21, and a pump interposed in the circulating channel C and feeding the pressurized water to the nozzle 21. A delivery opening 21a of the nozzle 21 is positioned on the inner side of the water outlet 10a and the suction water outlets 8 are opened facing the water outlet 10a in the inner positions of the delivery opening 21a, so that the jet water flow F is jetted out in the bathtub B at the strong water force without causing any pressure drop in the delivery guide cylinder 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a water massage apparatus that is attached to a bathtub such as a bath or a fitness pool and exhibits a massage action by a jet water flow.

  2. Description of the Related Art Conventionally, in large baths, public baths, fitness pools, etc. of hotels and inns, jet bath facilities that obtain a massage effect by applying a jet water stream mixed with air to bathtub circulation water to the body have become widespread. However, in the jet bath, a large amount of aerosol is generated as the bubbles burst on the surface of the water, but since this aerosol is a mist of bath water, it is unsanitary if it enters the eyes, nose and mouth of the bather. In addition, since it easily leads to infection with pathogenic microorganisms such as Legionella that propagate in the bathtub, its use has been greatly limited in recent years.

  Therefore, in some facilities, as a countermeasure described above, a modification is made so that the air intake port of the bubble-mixing nozzle manufactured for the jet bath is closed and only the water flow is jetted. However, in such a modified method, the water flow in the bathtub of the jet water flow is significantly reduced compared to the discharge in the bubble mixed state, so that the discharge pressure from the nozzle is remarkably increased in order to obtain a sufficient massage effect. For this purpose, a large-capacity large-sized pump is required, and there is a problem that the equipment cost and the operation cost are significantly increased. Therefore, although the necessity of a bubble-free type water massage method is increasing from the viewpoint of hygiene, the present situation is that there is nothing equivalent to a jet bath, and there is no cost.

In addition, as a bus adapter that circulates the bathtub water in and out of the bathtub to filter and purify it, a box-shaped adapter attached to the bathtub, a discharge pipe that opens in the bathtub, and the bathtub water from the outside to the adapter through the filter A suction passage is provided, and a nozzle serving as an outlet of the external circulation path connected to the adapter is arranged on the inner back side of the discharge pipe, and the jet water flow from the nozzle is passed through the discharge pipe into the bathtub by a pump interposed in the external circulation path. At the same time, the water in the adapter is sucked into the external circulation path, so that the bathtub water is drawn into the suction passage, and part of it is discharged into the bathtub along with the jet water flow from the nozzle. (Patent Documents 1 and 2). Since such a bus adapter increases the amount of water coming out of the discharge pipe with respect to the amount of water discharged from the nozzle, it can be considered to be used as a water massaging means commensurate with cost by using a small pump.
JP-A-11-287519 JP, 2000-274835, A However, in the above-mentioned bus adapter, the amount of water coming out of the discharge pipe increases due to the accompanying bath water, but on the other hand, a large pressure loss is caused when the bath water sucked into the jet water flow is caught and mixed. As a result, the water flowing out from the discharge pipe becomes weak, so that a sufficient massage effect cannot be obtained, and it cannot be expected as a hydromassage means replacing the jet bath.

  In view of the above-described circumstances, the object of the present invention is to release a large amount of bubble-free jet water flow into the bathtub in a strong water force even when the discharge pressure from the nozzle is small, thereby obtaining a powerful massage effect and equipment. It is an object of the present invention to provide a bubble-free hydromassage device that can be reduced in cost and operation cost and has no sanitary problem, and that can be sufficiently substituted for a jet bath from both the viewpoint of effectiveness and economy.

  In order to solve the above-mentioned problem, a water massage apparatus according to claim 1 of the present invention is arranged concentrically inside a discharge guide cylinder having one end opened as a water discharge port facing the inside of the bathtub, and inside the discharge guide cylinder. A pressurized water injection nozzle that injects pressurized water into the bathtub, a suction water outlet opening that opens around the nozzle in the discharge guide cylinder, and suction water that guides the bathtub water from the outside of the discharge guide cylinder to the suction water outlet A passage, a circulating water channel for leading the bathtub water to the nozzle, and a pump for supplying pressurized water to the nozzle through the circulating water channel, the discharge port of the nozzle being inward of the water discharge port of the discharge guide tube In addition, the suction water outlet port is open facing the water discharge port at the same position as the discharge port or at a position deeper inside the discharge port. In addition, the bathtub here is not limited to a bath tub, but refers to a general bath that is filled with hot water for a person to enter, such as a fitness pool.

  According to a second aspect of the present invention, in the hydromassage device according to the first aspect, a flange portion provided with the suction water outlet is formed on the outer periphery of the pressurized water jet nozzle, and a male screw is engraved on the outer peripheral surface of the flange portion. On the other hand, a female screw corresponding to the male screw is engraved on the inner periphery of the discharge guide tube, and a connection portion for the outlet pipe of the circulating water channel is integrally formed on one of the nozzle and the discharge guide tube. .

  According to the water massaging apparatus of the first aspect of the present invention, the injection of the pressurized water from the pressurized water injection nozzle inside the discharge guide cylinder generates a negative pressure behind the jet water flow. The water that is sucked from the suction water outlet by the negative pressure is opened from the nozzle at the same position at the nozzle outlet or at the inner depth of the nozzle, facing the water outlet of the discharge guide cylinder. Without being caught in the jet water flow, it is sent forward along the inner circumference of the discharge guide tube in a form attracted by the jet water flow and returns to the bathtub. Therefore, the amount of water discharged from the water discharge port of the discharge guide cylinder increases substantially due to the accompanying suction water from the suction water outlet port, and there is almost no pressure loss due to entrainment of suction water in the discharge guide cylinder. In order to maintain the strong water force accelerated by the nozzle squeezing effect, it flows into the bathtub, so that a strong massage effect is obtained by receiving this water flow on the body, while the amount of water discharged from the water discharge port is from the nozzle. Since the amount of discharged water is remarkably small, the pump that supplies pressurized water to the nozzle does not require a high capacity, and the use of a small pump can keep equipment costs and operation costs low.

  According to the invention of claim 2, the adapter part for discharging water into the bathtub is composed of only two members, that is, the pressurized water injection nozzle side and the discharge guide tube side, and the adapter only needs to be screwed together. The part can be assembled and formed, and the outlet pipe of the circulating water channel can be connected to the connecting part provided on one of the parts, so installation on the bathtub is very easy, construction costs can be reduced, and parts costs can be reduced. .

  Hereinafter, an embodiment of a water massage apparatus according to the present invention will be specifically described with reference to the drawings. FIG. 1 is an overall configuration diagram of a hydromassage device, FIGS. 2 to 6 show a first embodiment, and FIG. 6 shows a second embodiment.

  As shown in FIG. 1, the outlet (O) provided on one side wall (S1) and the inlet (I) provided on the opposite side wall (S2) are connected to the outside of the bathtub (B). The circulating water channel (C) is piped, and the bath water (W) sucked into the circulating water channel (C) from the outlet (O) is introduced by driving the pump (P) interposed in the circulating water channel (C). It is injected into the bathtub (B) from the water injection adapter (A) of the mouth (I), and the massage effect is obtained by the bather receiving the injection water flow (F) on the body. In the figure, (V) is a flow rate adjusting valve, (G) is a flow meter, and (M) is a pressure gauge.

  As shown in FIGS. 2 and 3, the water injection adapter (A) in the water massage device of the first embodiment is an adapter body (1) in which the majority from the front end facing the inside of the bathtub (B) forms a double cylinder. ) And a nozzle member (2) disposed in the inner part of the adapter main body (1), and the outlet pipe (C) of the circulating water channel (C) is connected to the connecting cylinder portion (11) on the rear side of the adapter main body (1). 3) is connected.

  As shown in FIGS. 4 (a) and 4 (b), the adapter main body (1) forms a concentric double cylinder whose front end is opened by the inner discharge guide cylinder (10) and the outer cover cylinder (12). The discharge guide tube (10) communicates with the small-diameter connecting tube portion (11) at the rear portion, and the annular step portion (13) whose boundary portion faces forward due to the inner diameter difference between the two (10) and (11). It has become. Further, the rear end side between the discharge guide tube (10) and the cover tube (12) is welded and closed, but the rear end portion of the discharge guide tube (10) extends along the circumferential direction. A plurality (four in the figure) of long holes (10a) are formed, and these long holes (10a) allow the inner space (4) of the discharge guide tube (10) to communicate with the outer annular space (5). Yes. Further, a female screw (6a) is formed on the inner peripheral surface of the rear part adjacent to the long hole (10a) of the discharge guide tube (10), and an outlet pipe (3) is formed on the outer peripheral surface of the connection tube portion (11). A male screw (7b) corresponding to the female screw (7a) on the inner periphery of the end is engraved.

  On the other hand, as shown in FIGS. 5A and 5B, the nozzle member (2) is a pressurized water injection nozzle that accelerates and injects the pressurized water supplied from the circulating water channel (C) through the tapered center hole (20). 21) and a flange portion (22) is integrally formed at the axially intermediate portion of the outer peripheral surface thereof. A plurality (eight in the figure) of suction water outlets (8) penetrating in the axial direction are formed in the flange portion (22) at equal intervals in the circumferential direction, and on the outer peripheral surface of the flange portion (22). A male screw (6b) corresponding to the female screw (6a) on the inner periphery of the discharge guide cylinder (10) of the adapter body (1) is engraved.

  The nozzle member (2) is inserted into the discharge guide tube (10) of the adapter body (1), and the male screw (6b) is screwed into the female screw (6a) of the discharge guide tube (10). As shown in FIG. 3, the peripheral edge of the rear end is fixed to the adapter main body (1) with the annular stepped portion (13) being in contact with it. For this screwing operation, the front part (2a) of the nozzle member (2) has a hexagonal outer shape.

  The water injection adapter (A) in which the nozzle member (2) is screwed to the adapter body (1) in this way is attached to the side wall (S2) of the tiled concrete of the bathtub (B) as shown in FIG. The hole (H) is inserted and fixed in a state in which the inner peripheral surface of the mounting hole (H) and the outer peripheral surface of the cover tube (12) are in watertight contact with each other via a caulking material or the like, and to the outside of the side wall (S2). As described above, the outlet pipe (3) of the circulating water channel (C) is screwed and connected to the protruding connecting cylinder (11). Thus, the annular space (5) between the discharge guide tube (10) and the cover tube (12) communicates with the suction water outlet (8) through the long hole (10a), thereby the bathtub (B). The suction water passage (9) for guiding the bathtub water W to the suction water outlet (8) is configured with the opening of the annular space (5) facing inward as the inlet (9a). Moreover, the opening part of the inner space (4) of the discharge guide cylinder (10) facing the inside of the bathtub (B) in the same mounting state forms a water discharge port (10b), and the discharge port (21a) of the pressurized water spray nozzle (21). The suction water outlet (8) is open to the water outlet (10b).

  In the hydromassage device of the second embodiment, as shown in FIG. 6, the adapter main body (1) of the water jet adapter (A) is composed of a front discharge guide tube (10) and a rear connection tube (11). However, other parts are the same as those in the first embodiment. And this water injection adapter (A) inserts the connection pipe | tube (11) in the attachment hole (H) of the side wall (S2) which consists of a metal plate of a bathtub (B), and attaches to this connection pipe | tube (11). The side wall (S2) is sandwiched between the front end surface of the outlet pipe (3) of the threaded circulation channel (C) and the rear end surface of the discharge guide cylinder (10), thereby being fixed to the side wall (S2). ing. In addition, (14) is a watertight packing interposed between the rear end face of the discharge guide cylinder (10) and the side wall (S2).

  In the water injection adapter (A) in the second embodiment, the entire discharge guide tube (10) protrudes into the bathtub (B) in the state of being attached to the bathtub (B), and is a long hole (10a) provided at the rear end. ) Directly opens into the bathtub (B) as the inlet of the suction water passage (9) that guides the bathtub water (W) to the suction water outlet (8).

  In the water massage device of the first and second embodiments, the pressurized water supplied from the circulating water channel (C) is accelerated by the pressurized water injection nozzle (21) and injected into the bathtub (B). A negative pressure is generated in the back of the jet water flow, and the bath water (W) is drawn into the suction water passage (9) by the attraction by the negative pressure, and the inside of the discharge guide tube (10) from the suction water outlet (8). Derived in space (4). Thus, the derived bath water (W) has the suction water outlet port (8) located inwardly of the discharge port (21a) of the nozzle (21) and toward the water discharge port (10b). Since it is open, it is accelerated by being attracted by the jet water flow without being caught in the jet water flow from the discharge port (21a), and goes straight forward along the inner circumference of the discharge guide tube (10). It is discharged into the bathtub (B).

  Therefore, the amount of water discharged from the water discharge port (10a) is significantly larger than the amount of water discharged from the nozzle (21) due to the accompanying bath water (W) drawn out from the suction water outlet (8). In addition, since there is almost no pressure loss due to entrainment of suction water in the discharge guide cylinder (10), a strong water force accelerated by the throttling effect of the nozzle (21) is maintained and ejected into the bathtub (B). A strong jet water flow (F) that reaches a position far from the discharge port (10a) is obtained, and when the bather receives the jet water flow (F) on the body, a strong massage effect comparable to the conventional jet bath is obtained.

  On the other hand, since the amount of water discharged from the pressurized water injection nozzle (21) is much smaller than the amount of water discharged from the water discharge port (10a), the pump P for supplying pressurized water to the nozzle (21) has a high capacity. Not required. Therefore, by using a small pump P, it is possible to keep the equipment cost and operation cost low. Therefore, in each facility that has conventionally adopted a jet bath, the cost can be substituted for the jet bath. This water flow massage device can be introduced in an appropriate form.

  Moreover, like the said 1st and 2nd embodiment, the water injection adapter (A) has the adapter main body (1) which integrally formed the connection part (11) in the rear part, and the nozzle member (2) screwed to this The adapter (A) can be assembled and formed by simply screwing these two members together, and the outlet pipe (3) of the circulating water channel (C) can be directly connected to the connecting portion (11). Therefore, there is an advantage that the installation work of the hydromassage device to the bathtub (B) becomes very easy, the construction cost can be reduced, and the parts cost can be reduced.

  In the first and second embodiments, the suction water outlet port (8) of the water injection adapter (A) is opened at a deeper position than the discharge port (21a) of the pressurized water injection nozzle (21). Even if the suction water outlet port (8) is configured to open at the same position as the discharge port (21a), the same effect as described above can be obtained. Further, the suction water outlet (8) is not limited to the round hole as in the first and second embodiments, but can be set to a long hole along the circumferential direction and other various shapes. On the other hand, the connecting tube (11) may be integrally formed on the nozzle member (2) side, contrary to the first and second embodiments. Furthermore, the discharge guide tube (10), the connecting tube (11), and the cover tube (12) as in the first embodiment may be configured to be screwed together as separate members. In addition, the detailed configuration of the water massage device of the present invention can be variously modified in addition to the first and second embodiments.

[Water comparison test]
Using the hydromassage device of this invention and the hydromassage device of the reference example in which the configuration of the adapter (A) is different, as shown in FIG. 7, each adapter (A) is placed on the side wall (S2) of the bathtub (B). Install and circulate a circulating water channel (not shown in this figure ... see Fig. 1) with a pump, and water in the bathtub (B) until the liquid level (L) reaches a height (h) of 15 cm from the center of the nozzle. (W) is inserted, the amount of water discharged from the pressurized water injection nozzle is set to 30 L / min, the pump is operated, and the amount of discharged water is stabilized at 60 L / min due to the increase in the amount of water accompanying the suction water from the suction water outlet , The distance from the nozzle discharge port where the indicated weight is 0.5 kg received at the center of the weighing pan (T) mounting plate (70 mm diameter disc) submerged with the jet water flow (F) horizontally in the water (D) was measured.

  In addition, the adapter (A) used the thing of said 2nd embodiment in the water massage apparatus of this invention, and the thing shown in FIG. 8 in the reference example. The adapter (A) of this reference example has a suction water introduction port (16) projecting sideways at a position closer to the rear part of the discharge guide tube (15) whose front end is a water discharge port (15a). The discharge port (17a) of the pressurized water injection nozzle (17) screwed into the guide tube (15) is positioned on the inner back side from the center of the suction water introduction port (16), and the discharge guide tube (15 ) Is integrally formed with a connecting tube (18) at the rear end. Thus, the diameter of the water discharge port is 28 mm in both the present invention and the reference example.

  As a result of this water pressure comparison test, the distance (D) at which the weight indicated by the weigh scale (T) is 0.5 kg was 13 cm in the hydromassage device of the reference example, whereas it was 22 cm in the hydromassage device of the present invention. A much larger value was obtained. From this water pressure comparison test, there is a great difference in the strength of the jet water flow (F) due to the difference in the position and direction of the suction water outlet portion into the discharge guide cylinder with respect to the nozzle discharge port. It is clear that there is almost no pressure loss due to entrainment in contrast to the adapter configuration of the present invention, which causes large pressure loss due to entrainment.

It is a mimetic diagram showing roughly the whole stream massage device composition of this invention. It is a front view of the water injection adapter attachment part in the water massage apparatus of a first embodiment concerning this invention. It is a vertical side view of the water injection adapter attachment part. The adapter main body of the same water-injection adapter is shown, (A) is a half-sectional side view, and (B) is a cross-sectional view taken along the loro line in FIG. The nozzle member of the same water injection adapter is shown, (a) is a half sectional side view, and (b) is a front view. It is a vertical side view of the water injection adapter attachment part in the water flow massage apparatus of 2nd embodiment which concerns on this invention. It is a schematic diagram which shows roughly the measuring method of a water-force comparison test. It is a half section side view of the water injection adapter in the water massage apparatus of the reference example with which it used for the water force comparison test.

Explanation of symbols

1: Adapter body 10: Discharge guide tube 10b: Water discharge port 11: Connection tube (connection part)
2: Nozzle member 21: Pressurized water injection nozzle 21a: Discharge port 22: Flange part 3: Outlet piping 6a: Female screw 6b: Male screw 8: Suction water outlet 9: Suction water passage A: Water injection adapter B: Bathtub C: Circulating water channel F: Jet water flow P: Pump W: Bath water

Claims (2)

A discharge guide cylinder opened at one end as a water discharge port facing the inside of the bathtub, a pressurized water injection nozzle arranged concentrically inside the discharge guide cylinder to inject pressurized water into the bathtub, and the discharge guide cylinder A suction water outlet opening around the nozzle, a suction water passage for leading the bathtub water from the outside of the discharge guide tube to the suction water outlet, a circulation water passage for guiding the bathtub water to the nozzle, and the circulation water passage. A pump for supplying pressurized water to the nozzle,
The discharge port of the nozzle is located on the inner side of the water discharge port of the discharge guide cylinder, and the suction water outlet port faces the water discharge port at the same position as the discharge port or at the inner side of the discharge port. A hydromassage device characterized by having an opening. A flange portion provided with the suction water outlet is formed on the outer periphery of the pressurized water jet nozzle, and a male screw is engraved on the outer peripheral surface of the flange portion, while a female screw corresponding to the male screw is provided on the inner periphery of the discharge guide tube. The water massage device according to claim 1, wherein a connecting portion for the outlet pipe of the circulating water channel is integrally formed on one of the nozzle and the discharge guide tube.

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