JP2015117886A - Hot water supply port adapter for bathtub - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water supply port adapter for a bathtub capable of preventing a spiral flow from being generated in hot water which circulates in a flow passage.SOLUTION: A hot water supply port adapter for a bathtub is fixed to a wall part of the bathtub in a penetrated form, and a flow passage A for circulating hot water formed in an outer peripheral cross-sectional shape is provided inside the port adapter. Hot water supplied to a rear part of the flow passage A from outside the bathtub through an outer pipe is discharged into the bathtub from a front part of the flow passage A through the flow passage A. A spiral flow suppression part 7 which extends in an axial core direction of the flow passage A, and which protrudes in the inner diameter direction is provided on the outer peripheral wall surface of the flow passage A.

Description

  The present invention relates to a hot water inlet adapter for a bathtub that is assembled to a wall portion of a bathtub for supplying hot water into the bathtub.

  In the circulation type hot water supply adapter assembled to the wall portion of the bathtub, an inner channel (inner circuit) having a circular cross section provided along the axial center, and an outer side of an annular cross section provided on the outer periphery of the inner channel What is provided with a flow path (outer circuit) is known. In this hot water supply adapter, when hot water is circulated such as when reheating, hot water supplied from an outdoor water heater via an outer pipe (outward pipe) is supplied to, for example, an inner flow path of the hot water supply adapter, While being discharged into the bathtub through the passage, hot water in the bathtub is sucked into, for example, the outer flow path of the hot water supply adapter, and passes through the outer flow path to the outdoor water heater via the outer pipe (return pipe). It is supposed to be returned.

  Such a conventional hot water supply port adapter is provided with an outer pipe connecting portion for connecting an outer pipe such as an outgoing pipe or a return pipe. The outer pipe connecting portion is formed in a thin tubular shape so as to communicate with the inner flow path and the outer flow path and to protrude outward. For example, in the hot water supply adapter shown in Patent Document 1, the outer pipe connection portion is arranged orthogonal to the adapter axis (flow path axis), and is supplied from the outer pipe connection portion, for example, via the forward pipe. The hot water is supplied to the inner channel from a direction orthogonal to the axis.

JP 2007-309575 A

  However, as shown in Patent Document 1, in the hot water supply adapter in which the outer pipe connection portion is arranged orthogonal to the inner flow path, the main stream of hot water supplied from the outer pipe connection section to the inner flow path is There is a case where it is supplied in a state where it is deviated from the axis of the inner flow path vertically and horizontally. Then, hot water is supplied from the outer pipe connection portion along the circular outer peripheral wall surface of the inner flow path, and the hot water flows while spirally swirling along the outer peripheral wall surface of the inner flow path. There was a problem that would occur. As a result, it is difficult to distribute hot water smoothly, such as a large amount of air mixed into the hot water flowing in the inner flow path and the flow rate falling, or hot water flowing in the inner flow path in an unstable state. There was a risk of becoming.

  In the above description, the problem about the case where hot water is supplied from the water heater to the inner flow path of the hot water inlet adapter has been described, but the case where hot water is supplied from the water heater to the outer flow path of the hot water inlet adapter is also described. The possibility of similar issues cannot be denied.

  This invention is made in view of said subject, and it aims at providing the hot water tap adapter for bathtubs which can prevent that a swirl flow generate | occur | produces in the hot water which distribute | circulates the flow path in an adapter. To do.

  In order to achieve the above object, the gist of the present invention is as follows.

[1] Hot water that is attached to the wall of the bathtub in a penetrating manner and that has a circular outer peripheral flow passage for circulation inside the bathtub, and is supplied from the outside of the bathtub to the rear of the flow passage via an outer pipe Is a hot water outlet adapter for a bathtub that is discharged into the bathtub from the front of the flow path through the flow path,
A hot water inlet adapter for a bathtub, characterized in that a spiral flow suppressing portion that extends in the axial direction of the flow path and projects in the inner diameter direction is provided on the outer peripheral wall surface of the flow path.

  [2] The flow path includes an inner flow path having a circular cross section and an outer flow path having an annular cross section provided on an outer periphery of the inner flow path, and at least of the inner flow path and the outer flow path. The hot water inlet adapter for bathtubs according to the preceding item 1, wherein either one of the swirl flow suppressing portions is provided.

  [3] The hot water inlet adapter for bathtubs according to the preceding item 2, wherein the spiral flow suppressing part is provided in the inner flow path.

[4] An introduction pipe part for introducing hot water into the flow path is formed on the outer peripheral wall at the rear end of the flow path, and the axis of the introduction pipe part is the axis of the flow path. Arranged substantially orthogonal to
The hot water inlet adapter for bathtubs according to any one of the preceding items 1 to 3, wherein the spiral flow suppressing portion is disposed at a position facing the introduction pipe portion on the outer peripheral wall surface of the flow path.

[5] A joint pipe having one end connected to the introduction pipe and the other pipe connected to the other end,
One end side of the joint pipe is connected to the introduction pipe portion so as to be rotatable around its axis,
By rotating the joint pipe with respect to the introduction pipe portion, the joint pipe is between a parallel state in which the axis is arranged parallel to the axis of the flow path and a right angle state in which the joint pipe is arranged at a right angle. The hot water inlet adapter for bathtubs according to the preceding item 4, which is configured to be movable.

  [6] The bathtub hot-water supply adapter according to any one of the preceding items 1 to 5, wherein a rear end surface of the flow path is closed, and a rear end portion of the spiral flow suppressing portion is in contact with the rear end closed surface.

  According to the hot water inlet adapter for bathtubs of the above [1], since the spiral flow suppressing portion is provided on the outer peripheral wall surface of the flow channel, the spiral flow suppressing portion causes the hot water to spiral in the circumferential direction in the flow channel. It is possible to prevent the flow and to prevent the generation of a spiral flow. Thereby, hot water can be distribute | circulated smoothly in the stable state, ensuring the flow volume of hot water sufficiently.

  According to the hot water inlet adapter for bathtubs according to the above [2] and [3], it is possible to prevent the generation of a spiral flow in the double tube type adapter having a flow path inside and outside.

  According to the hot water inlet adapter for bathtubs of the above [4], since the hot water introduced into the flow path from the introduction pipe portion is directly guided to the spiral flow suppressing portion, the flow of the hot water is quickly adjusted, and more It is possible to reliably prevent the spiral flow from occurring.

  According to the hot water inlet adapter for bathtubs of the above [5], in the adapter that can adjust the outer pipe so as to be movable between a state parallel to the flow path and a state perpendicular to the flow path, generation of a spiral flow can be prevented. it can.

  According to the hot water inlet adapter for bathtub of [6] above, the rear end portion of the swirl flow suppressing portion can also be supported on the inner peripheral surface of the flow path, and the mounting strength of the swirl flow suppressing portion, and consequently the strength of the swirl flow suppressing portion itself, Can be improved.

FIG. 1 is a perspective view showing a hot water inlet adapter for bathtubs according to an embodiment of the present invention. Drawing 2 is a sectional view showing the hot-water supply adapter of an embodiment. FIG. 3 is an exploded perspective view showing the hot water supply adapter according to the embodiment. Drawing 4 is a perspective view which looked at the state where the joint pipe was made parallel in hot-water supply adapter of an embodiment from the back side. FIG. 5 is a perspective view showing a state where the joint pipe is separated from the outside-tubing attachment member in the hot water supply adapter according to the embodiment. FIG. 6 is a front view showing the outside-tank attachment member of the embodiment. FIG. 7 is a side sectional view showing the outside-tank mounting member of the embodiment. FIG. 8 is a bottom cross-sectional view illustrating the outside-tank mounting member of the embodiment. FIG. 9 is a schematic cross-sectional view showing the pipe structure in the hot water supply adapter as seen from the rear side. FIG. 10 is a schematic cross-sectional view showing the pipe structure in the hot water supply adapter as viewed from the side. FIG. 11 is a perspective view showing an outside-tank attachment member of a hot water supply adapter according to a modification of the present invention.

  1-5 is a figure which shows the hot-water supply port adapter for bathtubs which is embodiment of this invention. As shown in these drawings, the hot water inlet adapter for bathtubs of the present embodiment is assembled in a mounting hole provided in the side wall (wall part) W of the bathtub, and hot water from a water heater installed outside the bathtub is supplied. It is applied to a hot water supply system that has a hot water paste (hot water storage) function that supplies water into the bathtub and a reheating (circulation) function that draws the hot water in the bathtub into the hot water heater and returns the heated hot water to the bathtub. is there. Furthermore, this hot water supply adapter is a so-called non-polar type, so that the same function can be obtained even if the connection to the forward pipe and the return pipe connected to the hot water heater is reversed.

  The hot water supply adapter of the present embodiment includes a partition member 3 for forming a predetermined flow path between the inside and the outside of the bathtub, a male screw member 2 for attaching the partition member 3 to the inner surface side of the side wall W of the bathtub, The tank outer attachment member 1, the filter member 4, and the joint pipe 6 connected to the tank outer attachment member 1 are provided as basic components.

  In addition, in this specification, the inner side (left side of FIG. 2) with respect to the bathtub along the axial center direction of the hot water inlet adapter for bathtubs is referred to as “front side” or “front side”, and the outer side of FIG. (Right side) is “rear side” or “back side”, the upper side of FIG. 2 is “upper side”, the lower side of FIG. 2 is “lower side”, and the direction perpendicular to the page of FIG. It is described as “direction” or “left-right direction”.

  In this embodiment, the tank outer attachment member 1 is formed of a molded product of hard synthetic resin. In addition to the synthetic resin, examples of the material capable of configuring the outside-tubing attachment member 1 include brass and stainless steel.

  The tank outer attachment member 1 of the present embodiment includes a cylindrical outer cylinder portion 12 whose front side is open and whose rear side is closed, and a cylindrical inner portion disposed coaxially within the outer cylinder portion 12. A cylindrical portion 11, a flat ring-shaped flange portion 13 provided on the outer periphery of the front end of the outer cylindrical portion 12, and two upper and lower female pipe portions 14 provided on the outer surface of the rear wall of the outer cylindrical portion 12, are provided. It is integrally formed.

  The inner space of the inner cylinder part 11 is configured as a part of an inner flow path (inner circuit) A described later, and an annular space between the inner cylinder part 11 and the outer cylinder part 12 is formed by an outer flow path (described later). It is configured as a part of the outer circuit (B).

  In the present embodiment, the inner peripheral side surface of the inner cylinder part 11 constituting the outer peripheral surface of the inner flow path A is formed in a circular cross section, and the inner peripheral side surface of the outer cylindrical body 12 constituting the outer peripheral surface of the outer flow path B Is formed in a circular cross section.

  A ring-shaped packing 51 made of synthetic resin is attached to the outer peripheral edge portion of the flange portion 13 of the outside-tubing attachment member 1 for watertightness between the flange portion 13 and the outer wall surface of the bathtub.

  As shown in FIGS. 5 to 8, the female side pipe portion 14 provided on the outer surface of the rear wall of the outer cylinder portion 12 in the tank outer attachment member 1 has a circular tubular shape having mutually independent ducts. .

  Of the female side pipe part 14, the lower female side pipe part 14a extending downward is opened downward, and the upper female side pipe part 14b extending upward is opened upward. The tip opening of the lower female pipe portion 14a is connected to the internal space of the inner cylinder portion 11, that is, the inner flow path A, and the tip opening of the upper female pipe portion 14b is connected to the inner cylinder portion 11 and the outer cylinder portion. The annular space between 12, that is, the outer flow path B is connected in communication.

  In addition, each opening edge 142 in each tube hole of the lower female pipe portion 14a and the upper female pipe portion 14b has a large inner diameter.

  As shown in FIG. 5 and the like, the axial centers of the inner flow path A and the outer flow path B, that is, the axial centers X of the inner cylinder portion 11 and the outer cylinder portion 12, are arranged along the front-rear direction, and the lower female pipe The axis Y of the path 14a and the upper female side pipe line 14b is disposed along the vertical direction. Accordingly, the axis Y of the female side pipes 14a and 14b is arranged orthogonal to the axis X of the flow paths A and B.

  In the present embodiment, the axis X of the flow paths A and B and the axis Y of the female side pipe 14 (14a, 14b) are arranged so as to intersect.

  Here, in this embodiment, the introduction pipe part is comprised by the female side pipe lines 14a and 14b.

  In the present embodiment, the axial center Y of the lower female side conduit 14a and the axial center Y of the upper female side conduit 14b coincide with each other. However, the present invention is not limited thereto, and in the present invention, The axial center of the lower female side conduit 14a may not coincide with the axial center of the upper female side conduit 14b.

  As shown in FIGS. 6 to 8, a baffle plate (rectifying plate) 7 as a spiral flow suppressing portion is integrally formed on the inner peripheral surface of the inner cylindrical body 11 in the outer tank attachment member 1. The baffle plate 7 is disposed at the upper end portion of the inner peripheral surface of the inner cylindrical body 11, that is, at a position facing the lower female side conduit 14a. Further, the baffle plate 7 is disposed at the rear end portion of the inner cylinder 11, and the rear end portion of the baffle plate 7 is formed integrally with the bottom surface (rear end closing surface) of the inner cylinder 1.

  The baffle plate 7 is formed continuously in the front-rear direction along the axis X of the inner cylindrical body 11 and is formed so as to protrude in the inner diameter direction (downward). Further, the baffle plate 7 is formed so that the projecting dimension gradually becomes smaller from the rear end side toward the front end side.

  As will be described in detail later, in the present embodiment, the baffle plate 7 prevents the swirling flow from occurring in the hot water flowing through the inner flow path A, and the hot water flows smoothly and stably in the inner flow path A. It is something to be made.

  In the present embodiment, the height (protrusion dimension) and length (axial dimension) of the highest portion of the baffle plate 7 are not particularly limited, but the height of the highest portion of the baffle plate 7 is not limited. The dimension is preferably set to 5 mm or more, and the length dimension of the baffle plate 7 is preferably set to 15 mm or more. That is, when the height of the baffle plate 7 is too low or the length of the baffle plate 7 is too short, it may be difficult to sufficiently suppress the generation of the spiral flow described in detail later.

  As shown in FIGS. 1 and 5, etc., the joint pipe 6 connected to the female side pipe portion 14 of the outside-tubing attachment member 1 is constituted by an integrally molded product of hard synthetic resin.

  The joint pipe 6 is formed with a male side pipe portion 64 on a side portion on one end side thereof. The male side pipe portion 64 is arranged such that its axis is orthogonal to the axis Z of the joint pipe 6. Furthermore, the axis Z of the joint pipe 6 and the axis of the male side pipe part 64 intersect each other.

  Needless to say, the inside (pipe) of the joint pipe 6 and the inside (pipe) of the male side pipe portion 64 are connected in communication.

  The male side pipe part 64 can be inserted into the female side pipe part 14 in the outside-tubing attachment member 1 in an adapted state.

  The other end side of the joint pipe 6 is configured as an insertion fixing portion 61, which is press-fitted and fixed to end portions of outer pipes such as the forward pipe 6a and the return pipe 6b as shown in FIG. 1 and FIG. 6a and the return pipe 6b can be connected in communication.

  Note that the insertion fixing portion 61 has a so-called bamboo shoot shape. That is, on the outer peripheral surface of the insertion fixing portion 61, a plurality of retaining protrusions 62 continuous in the circumferential direction are integrally formed at equal intervals in the axial direction, and the forward pipe 6a and the return pipe 6b to be connected are formed. Can be more reliably prevented.

  In the present invention, the shape of the insertion fixing portion 61 is not limited to a bamboo shoot shape, and may be any shape as long as it can connect the outer tubes 6a and 6b. For example, a male screw-like portion may be formed on the outer peripheral surface of the insertion fixing portion 61 so that the outer tubes 6a and 6b can be connected by screwing.

  An O-ring receiving groove 65 that is continuous in the circumferential direction is formed on the outer peripheral surface of the male side pipe portion 64. A synthetic rubber O-ring 66 having elasticity and adhesion is mounted in the O-ring housing groove 65.

  Here, in the present embodiment, the male side pipe part 64 is configured as one end side of the joint pipe 6, and the insertion fixing part 61 is configured as the other end side of the joint pipe 6.

  In the present embodiment, at least a part of the outer pipes such as the forward pipe 6a and the return pipe 6b connected to the joint pipe 6 is formed of a synthetic resin molded product having flexibility.

  The male side pipe part 64 of the joint pipe 6 having the above configuration is inserted into the female side pipe part 14 of the in-tank mounting member 1 in an adapted state, and is connected in a retaining state by a fixing means (not shown). Further, in this connected state, the outer peripheral surface of the male side pipe part 64 is in sliding contact with the inner peripheral surface of the female side pipe part 14, and the male side pipe part 64 is rotated around the axis with respect to the female side pipe part 14. It is possible. Further, when the rotation operation is performed, the male side pipe part 64 can be fixed at an arbitrary rotational position by the frictional resistance between both the pipe parts 14 and 64.

  In the state where the male side pipe part 64 is inserted into the female side pipe part 14, the O-ring 66 accommodated in the O-ring accommodation groove 65 of the male side pipe part 64 is the inner peripheral surface of the female side pipe part 14. Accordingly, the water tightness (sealability) between the outer peripheral surface of the male side pipe part 64 and the inner peripheral surface of the female side pipe part 14 is ensured.

  As shown in FIGS. 2 and 3, the male screw member 2 is made of, for example, an integrally molded product of hard synthetic resin, and a flat ring-shaped flange portion 22 is integrally formed on the outer periphery of the front end of a cylindrical portion 21 with both ends open. On the outer peripheral surface of the cylindrical portion 21, a male screw that is screwed into the female screw of the outside-tubing attachment member 1 is engraved.

  On the front surface side of the flange portion 22, a large number of bottomed lock holes 23 fitted to the tips of lock pins 35 provided in the partition member 3 are provided at regular intervals in the circumferential direction.

  The tubular portion 21 of the male screw member 2 is screwed and fixed to the outer tubular portion 12 of the outside-tubing attachment member 1 through the attachment hole of the bathtub side wall W.

  Thereby, the male screw member 2 is arranged via the ring-shaped packing 53 in a state where the flange portion 13 of the tank outer mounting member 1 is disposed along the peripheral edge of the mounting hole on the outer side wall (outer wall surface) of the bathtub. It is press-contacted with the peripheral part of the attachment hole of the bathtub inner wall surface.

  In this way, the peripheral edge portion of the attachment hole of the bathtub side wall W is sandwiched by the flange portions 13 and 22 of the outside-tubing attachment member 1 and the male screw member 2 and assembled in a penetrating manner to the side wall W of the bathtub.

  The partition member 3 forms a flow path as a non-polar type, and is configured by assembling a plurality of hard synthetic resin parts, for example. The partition member 3 includes an elongated cylindrical cylindrical portion 31 extending in the axial direction (front-rear direction) and a disk-shaped disc portion 32 provided at the front end portion of the cylindrical portion 31.

  The disk portion 32 has a hollow structure in which a plurality of flow paths are provided. The outer peripheral wall integrally formed so as to surround the outer periphery and a part of the front side opening of the outer peripheral wall are closed. And a plate 33. Further, openings 321 are respectively formed on both lower sides of the outer peripheral wall of the disk portion 32.

  In the present embodiment, the inner flow path A is formed by the inside of the cylindrical portion 31 and the inside of the inner cylinder portion 11 of the outside-tubing attachment member 1 that communicates therewith.

  Furthermore, the cylindrical part 31 is arrange | positioned inside the cylindrical part 21 of the external thread member 2 so that it may mention later, the annular space between the cylindrical part 31 and the cylindrical part 21, and the tank outer attachment member 1 connected to it. The outer flow path B is formed by the annular space between the inner cylinder part 11 and the outer cylinder part 12.

  In the present embodiment, one of the openings 321 provided in the disk part 32 communicates with one of the inner flow path A and the outer flow path B and functions as a discharge port. The other opening communicates with the other flow path and functions as a suction port.

  When a double-conveying water heater is employed, the two openings 321 function as discharge ports during hot water filling.

  The partition member 3 having the above configuration is detachably attached to the male screw member 2 assembled to the bathtub side wall W by a known attachment means. At this time, the cylindrical part 31 in the partition member 3 is inserted into the inner cylinder part 11 of the outside-tubing attachment member 1 disposed inside the male screw member 2.

  In this state, an O-ring 36 is disposed between the inner cylindrical portion 11 of the outside-tubing attachment member 1 and the cylindrical portion 31 of the partition member 3, and the O-ring 36 allows watertightness between the inner cylindrical portion 11 and the cylindrical portion 31. Is planned.

  Further, the packing (not shown) provided on the rear surface of the disk portion 32 of the partition member 3 allows watertightness between the disk portion 32 of the partition member 3 and the flange portion 22 of the male screw member 2. .

  A pin insertion hole 34 into which the lock pin 35 is inserted is formed at the center upper portion of the front plate 33 in the partition member 3, and when the lock pin 35 is press-fitted into the pin insertion hole 34 of the partition member 3, The distal end portion of the lock pin 35 is fitted into one of the lock holes 23 in the male screw member 2, thereby preventing rotational displacement of the partition member 3 with respect to the male screw member 2.

  The filter member 4 is made of, for example, a molded product of hard synthetic resin, and can be detachably mounted in a state of covering the front side (disk portion 32) of the partition member 3 from the front side. At the lower end of the outer peripheral wall of the filter member 4, an opening 42 is provided corresponding to the opening 321 of the disk portion 32. Further, a large number of through holes 41 are formed in the front wall portion of the filter member 4.

  In the hot water supply adapter having the above configuration, the forward pipe 6a to which hot water is supplied from the hot water heater to the two joint pipes 6 and 6 connected to the outside mounting member 1, and the return pipe for returning hot water to the hot water heater side. 6b is connected, but the hot water supply adapter of the present embodiment is of a non-polar type as described above, and therefore the forward pipe 6a and the return pipe 6b are connected to any one of the two joint pipes 6 and 6. Any pipe may be connected. For example, as shown in FIG. 1, the forward pipe 6a is connected to one joint pipe 6 communicating with the internal flow path A of the hot water supply adapter, and the return pipe 6b is connected to the other joint pipe 6 communicating with the external flow path B. In this case, the hot water supplied from the forward pipe 6 a passes through the internal flow path A and is supplied into the bathtub from one opening 321 of the partition member 3, and the hot water in the bathtub is supplied to the other of the partition member 3. It is sucked into the inside of the partition member 3 from the opening portion 321 of the other, and returns to the water heater through the external flow path B and the return pipe 6b.

  Conversely, when the forward pipe 6a is connected to the other joint pipe 6 and the return pipe 6b is connected to one joint pipe 6, hot water from the water heater passes through the forward pipe 6a and the external flow path B. The hot water in the bathtub is returned to the water heater through the internal flow path A and the return pipe 6b.

  Further, in the hot water supply adapter of the present embodiment, the joint pipe 6 assembled to the outside-tubing attachment member 1 has an axis around the axis of the male side pipe portion 64, that is, an axis perpendicular to the axis of the outside-tubing attachment member 1. It is configured to be able to rotate 360 ° around. Therefore, for example, as shown in FIG. 1, the joint pipe 6 is set to an L-shaped state (right angle state) oriented in a direction orthogonal to the axis of the outside-tubing attachment member 1, as shown in FIG. Thus, the joint pipe 6 can be set to an S-type state (parallel state) in a direction parallel to the axis of the outside-tubing attachment member 1. Therefore, the outer pipes 6a and 6b are pulled out in a direction orthogonal to the axis X of the outer tank mounting member 1, for example, in the vertical direction or the left and right direction, or in a direction parallel to the axis X of the outer tank mounting member 1 (rear). In accordance with the installation space of the hot water supply adapter, the pulling direction of the outer pipes 6a and 6b can be freely set in an optimum direction, and versatility can be improved.

  Here, as described in detail below, in the case where the joint pipe 6 is set in an L-shaped state, in particular, when the forward pipe 6a is connected to the joint pipe 6 on the inner flow path A side, Although there is a possibility that a swirl flow is generated in the hot water flowing through the flow path A, in the present embodiment, the baffle plate 7 is formed in the inner flow path A. In the passage A, hot water can be circulated smoothly in a stable state.

  That is, when the joint pipe 6 is set in the L-shaped state, as shown in FIG. 9, the axis Y of the lower female side pipe portion 14a is relative to the axis X along the longitudinal direction of the inner flow path A. In addition to being arranged orthogonally, the axis Z of the joint pipe 6 is arranged orthogonally to the axis Y of the lower female pipe portion 14a. In this pipe line configuration, the hot water supplied from the forward pipe 6a to the joint pipe 6 flows in the joint pipe 6 along the axis Z in the right direction in the figure, and then the hot water is supplied to the lower female side pipe line 14a. In addition, the hot water flows upward along the axis Y in the lower female side conduit 14a. Here, the hot water U introduced from the joint pipe 6 to the lower female side pipe 14a flows in a state where the inside of the lower female side pipe 14a is biased to the right side (one side) from the axis Y due to the influence of water. I will do it. Further, the hot water U is introduced into the inner flow path A while being biased to the right side (one side). That is, since the hot water U introduced into the inner channel A is biased to the right side (one side) from the axis X of the inner channel A, the outer peripheral wall surface of the inner channel A (the inner peripheral surface of the inner cylinder 11). Will flow along. For this reason, if the baffle plate 7 as in the present embodiment is not present, the hot water U flows in a spiral manner along the outer peripheral wall surface of the inner flow path A (the inner peripheral surface of the inner cylinder 11). As a result, a spiral flow is generated. When a swirl flow is generated in the hot water U in this way, the flow rate is greatly reduced or the flow of the hot water becomes unstable due to air bubbles or the like, making it difficult to smoothly distribute the hot water. As a result, the flow characteristics deteriorate.

  Therefore, in the present embodiment, the baffle plate 7 along the axis X of the inner flow path A is provided on the outer peripheral wall surface of the inner flow path A as shown by the broken line in FIG. The hot water U is restricted from flowing in the circumferential direction by the baffle plate 7, thereby preventing the hot water U from flowing through the inner flow path A in the circumferential direction and generating a spiral flow. Thereby, the hot water flows in the inner channel A in a stable state along the axis X, and the hot water can be circulated smoothly.

  Furthermore, in the present embodiment, the baffle plate 7 is disposed on the outer peripheral wall surface of the inner flow path A at a position facing the lower female pipe line 14a, so that the baffle plate 7 is introduced into the inner flow path A from the lower female side pipe line 14a. The heated hot water U is directly guided to the position of the baffle plate 7, and immediately after the introduction, the flow is controlled by the baffle plate 7. For this reason, generation | occurrence | production of a spiral flow can be prevented more reliably, and a favorable flow characteristic can be acquired reliably.

  Furthermore, in the present embodiment, the rear end portion of the baffle plate 7 is brought into contact with the bottom surface (rear end surface) of the inner cylinder 11 and is integrated with the bottom surface. The baffle plate 7 can be supported by the inner cylindrical body 11, for example, compared with the case where the baffle plate 7 is supported by the inner cylindrical body 11 only at one of the upper edges of the baffle plate 7. The strength of the plate 7 itself can be improved. Therefore, the baffle plate 7 can be effectively prevented from being damaged, deteriorated, and the reliability and durability can be further improved.

  Furthermore, in this embodiment, since the baffle plate 7 is formed integrally with the outside mounting member 1, the strength of the baffle plate 7 can be further improved, and the baffle plate 7 can be more reliably damaged or deteriorated. Can be prevented.

  By the way, when the joint pipe 6 is set in an S-type state parallel to the inner flow path A as shown in FIG. 4, even if there is no baffle plate 7, the possibility of generating a swirl flow is reduced. . That is, when the joint pipe 6 is set in an S-type state parallel to the inner flow path A, as shown in FIG. 10, the hot water U introduced from the joint pipe 6 to the lower female side pipe line 14a Due to the influence, the fluid flows in the lower female side pipe line 14a in a state biased to the front side with respect to the axis Y. Thus, since the hot water is only biased forward and not in the left-right direction, the hot water U is introduced onto the axis X of the inner flow path A from the lower female side conduit 14a. For this reason, the hot water U does not circulate while spirally turning along the outer peripheral wall surface of the inner flow path A, and it is possible to prevent the generation of a spiral flow.

  Therefore, the present invention is particularly effective when the hot water supply adapter having the movable joint pipe 6 is used in the L-shaped state (see FIG. 1).

  However, in general, the hot water supply adapter has a very complicated internal water channel, so that the behavior of hot water may become unstable. Therefore, even if the joint pipe 6 is set to the S-type state as described above, a spiral flow may occur in the inner flow path A or the like. Therefore, this invention can be employ | adopted without any trouble also with respect to the hot water supply adapter which arrange | positions the joint pipe | tube 6 in a S-type state.

  For reference, in the case of the hot water supply adapter as described above, in the case where the baffle plate 7 is not usually provided, the axial center Z of the joint pipe 6 is 45 ° or more with respect to the axial center X of the inner flow path A. As a result, a swirl flow is noticeably generated.

  As described above, according to the hot water supply adapter of the present embodiment, since the baffle plate 7 is formed in the inner flow path A, it is possible to prevent the generation of a swirl flow and reliably prevent problems such as a decrease in flow rate. Hot water can be smoothly circulated in a stable state.

  In addition, the hot water supply adapter as in the present embodiment has a complicated internal pipe structure, and the flow of hot water is very complicated, so that it is difficult to obtain appropriate flow characteristics, and the generation of a spiral flow, etc. Is difficult to suppress. Therefore, by adopting the baffle plate 7 in such a hot water supply adapter having a complicated pipe structure, the effect of suppressing the vortex flow appears remarkably and the flow characteristics can be drastically improved.

  In particular, the inner flow path A of the hot water supply adapter has a more complicated introduction pipe structure from the outer pipe. Therefore, by suppressing the generation of the swirl flow in the inner flow path A as in this embodiment, the inner flow path A is further increased. , Flow characteristics can be improved.

  In addition, in the said embodiment, although demonstrated taking the example of the hot-water supply adapter with which the joint pipe 6 was provided separately with respect to the tank outer attachment member 1, it is not restricted only to it, This invention is shown, for example in FIG. As described above, the present invention can also be applied to a hot water supply adapter in which the outer pipe connecting portion 60 corresponding to the joint pipe 6 or the insertion fixing portion 61 is integrally formed with the introduction pipe portion 14 of the outside-tubing attachment member 1.

  Moreover, in the said embodiment, although the baffle plate 7 is employ | adopted as a spiral flow suppression part, in this invention, a spiral flow suppression part is not limited to plate shape, It forms in what kind of shape. Also good.

  Furthermore, in the said embodiment, although the baffle plate as a swirl flow suppression part is integrally formed in the tank outer attachment member 1, it is not restricted only to it, A swirl flow suppression part is formed separately with respect to the tank outer attachment member. The separate spiral flow suppressing portion may be fixed to the outside mounting member by a fixing means such as an adhesive.

  Furthermore, in the present invention, a plurality of swirl flow suppressing portions may be formed, for example, a plurality of swirl flow suppressing portions may be formed on the outer peripheral wall surface of the inner flow path A at intervals in the circumferential direction. A plurality of flow suppressing portions may be formed at intervals in the axial direction of the inner flow path A.

  Furthermore, in the said embodiment, although the case where the swirl | vortex flow suppression part was formed in the inner side flow path A was mentioned as an example and demonstrated, it is not restricted to it, In this invention, a swirl | flow current suppression part is formed in the outer side flow path B. Alternatively, it may be formed in both the inner flow path A and the outer flow path B. However, since the hot water inlet adapter is more likely to cause a drift in the hot water introduced into the inner flow path A as compared with the hot water introduced into the outer flow path B, a method for forming the swirl flow suppressing portion in the inner flow path A is preferred. Is more effective.

  In the above-described embodiment, the case where the female pipe portion 14 is formed on the outer tank attachment member 1 side and the male pipe portion 64 is formed on the joint pipe 6 side is described as an example. Not only that, but the male side pipe part is formed on the joint pipe side and the male side pipe part is formed on the joint pipe side. You may comprise so that it may insert in a part.

  Further, in the outside-tubing attachment member 1 of the above embodiment, the female side pipe portion 14a connected to the inner flow path A is disposed downward, and the female side pipe line 14b connected to the outer flow path B is directed upward. However, the present invention is not limited to this, and in the present invention, the female side conduit 14a on the inner flow path A side is directed upward and the female side conduit 14b on the outer flow path B side is disposed downward, The pipelines 14a and 14b may be arranged sideways or obliquely.

  The bathtub hot-water supply port adapter of the present invention can be used as a hot-water fitting for bathtubs for supplying hot water into the bathtub.

1: Outside tank attachment members 14, 14a, 14b: Female side pipe part (introduction pipe part)
6a: Outward pipe (outer pipe)
6b: Return pipe (outer pipe)
6: Joint pipe A: Inner channel B: Outer channel U: Hot water W: Side wall (wall)
X, Y, X: Axis

Claims (6)

While being attached to the wall of the bathtub in a penetrating state, a flow channel for circulating hot water having a circular outer peripheral cross section is provided inside, and the hot water supplied from the outside of the bathtub to the rear portion of the flow channel via the outer pipe is flowed. A hot water outlet adapter for a bathtub that is discharged into the bathtub from the front of the flow path through the path,
A hot water inlet adapter for a bathtub, characterized in that a spiral flow suppressing portion that extends in the axial direction of the flow path and projects in the inner diameter direction is provided on the outer peripheral wall surface of the flow path.   The flow path has an inner flow path having a circular cross section and an outer flow path having an annular cross section provided on the outer periphery of the inner flow path, and at least one of the inner flow path and the outer flow path. The hot water inlet adapter for bathtubs according to claim 1, wherein the spiral flow suppressing portion is provided.   The hot water inlet adapter for bathtubs according to claim 2, wherein the spiral flow suppressing portion is provided in the inner flow path. An introduction pipe portion for introducing hot water into the flow passage is formed on the outer peripheral wall at the rear end portion of the flow passage, and the axis of the introduction pipe portion is substantially orthogonal to the axis of the flow passage. Arranged,
The hot water inlet adapter for bathtubs according to any one of claims 1 to 3, wherein the spiral flow suppressing portion is disposed at a position facing the introduction pipe portion on the outer peripheral wall surface of the flow path. One end side is connected to the introduction pipe portion, and the other end side includes a joint pipe connected to the outer pipe,
One end side of the joint pipe is connected to the introduction pipe portion so as to be rotatable around its axis,
By rotating the joint pipe with respect to the introduction pipe portion, the joint pipe is between a parallel state in which the axis is arranged parallel to the axis of the flow path and a right angle state in which the joint pipe is arranged at a right angle. The hot water inlet adapter for bathtubs according to claim 4, which is configured to be movable. The hot-water adapter for a bathtub according to any one of claims 1 to 5, wherein a rear end surface of the flow path is closed, and a rear end portion of the spiral flow suppressing portion is in contact with the rear end closed surface.

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