JP2007139207A - Adaptor of hot water supply port for bathtub - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adaptor of a hot water supply port for a bathtub capable of quickly mixing water of high temperature supplied from a water heater with a bathtub hot water, and discharging the hot water of which a temperature is lowered, into the bathtub, particularly in reheating. <P>SOLUTION: This adapter of the hot water supply port for the bathtub is mounted on a bathtub side wall Ta in a penetrated state, and connected by piping with the water heater installed outside of the bathtub T and having a reheating function. This adaptor comprises suction ports 51a, 51b for hot water in the bathtub T, and a discharge port 53 for hot water supplied from the water heater. Discharge chambers 52a, 52b to which the hot water is supplied from the water heater are disposed at an upstream side of the discharge port 53, a mixing flow channel 6A is formed to directly guide the hot water in the bathtub to the discharge chambers 52a, 52b inside of the bathtub, and the hot water in the bathtub is led into the discharge chambers 52a, 52b from the mixing flow channel 6A by induction force accompanying with discharge flow of the hot water from the water heater to the bathtub T through the discharge chambers 52a, 52b, to be mixed with the hot water from the water heater and released into the bathtub. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hot water inlet adapter for a bathtub that is attached to a bathtub wall portion in a penetrating state and is pipe-connected to a hot water heater outside the bathtub.

In recent years, as a hot water supply system for a bathtub, a hot water function that sends hot water boiled in a hot water heater installed outside the bathtub into the bathtub, and the hot water in the bathtub is sucked into the hot water heater and heated by the hot water heater. As such, those having a reheating function for returning to the bathtub are becoming popular. And in such a hot water supply system, the piping of the circulation channel between hot water supply machines is connected to the hot water supply port adapter attached to the bathtub wall part in the penetration state (patent documents 1 and 2).
Japanese Patent Laid-Open No. 11-201558 JP-A-11-337186

  By the way, in such a hot water supply system, since the hot water supplied from the hot water heater is hot, it is discharged into the bathtub particularly when the reheating is often performed in a situation where a person has entered the bathtub. It is desirable that the high-temperature water to be mixed with the hot water in the bathtub as quickly as possible to reach a temperature lowered before approaching the bather's body.

  Therefore, as the above-mentioned hot water supply adapter, on the inner side of the tank, the suction port is arranged on the front surface, the hot water in the bathtub is sucked through the porous filter and sent to the hot water heater, while the hot water supplied from the hot water heater is used. In order to prevent the bather from touching the bather directly, the discharge port has a generally downward slit shape so that the discharge flow spreads downward in a fan shape along the bathtub wall surface.

  However, in this conventional hot water supply adapter, since mixing of the discharge flow from the discharge port and the hot water in the bathtub is difficult to proceed, a local high-temperature part is temporarily generated in the bathtub or a high-temperature flow is generated by the bather. Often reached the position of.

  This invention is made in view of the above-mentioned circumstances. As a hot water inlet adapter for a bathtub, high-temperature water supplied from a water heater quickly mixes with the hot water in the bathtub, and particularly when reheating, It is an object of the present invention to provide an apparatus capable of discharging into a bathtub in a state where the temperature is lowered, and preventing a local high temperature portion from being generated in the bathtub or a high temperature flow from reaching a bather.

  The above problem is solved by the following means.

[1] A hot water outlet adapter for a bathtub that is attached to a side wall of a bathtub in a penetrating state and connected to a hot water heater having a reheating function installed outside the bathtub,
A hot water suction port in the bathtub and a discharge port of hot water supplied from the hot water heater, and a discharge chamber into which hot water supplied from the hot water supply flows on the upstream side of the discharge port; A mixing flow channel is provided for directing the warm water directly into the discharge chamber inside the tank,
The hot water from the water heater is drawn into the discharge chamber from the mixing channel by the attractive force accompanying the discharge flow from the water heater through the discharge chamber into the bathtub, and this hot water is mixed with the hot water from the water heater. Then, a hot water inlet adapter for a bathtub configured to be discharged into the bathtub.

  [2] The discharge chamber and the mixing flow channel are provided in a flow channel forming unit disposed inside the bathtub, and an inlet of hot water supplied from a water heater is opened on the upper side of the discharge chamber. The hot water outlet adapter for bathtubs according to claim 1, wherein the discharge port is opened in a slit shape along the lower peripheral edge of the forming unit.

  [3] The mixing channel is formed along the upper peripheral edge of the channel forming unit, and the lower end side of the mixing channel is opened to the discharge chamber as a lead-out port, and is positioned higher than the lead-out port. The hot water inlet adapter for bathtubs according to claim 2, comprising an inlet for the mixing channel.

  [4] The bathtub hot-water adapter according to claim 2 or 3, wherein the introduction port of the mixing channel opens directly from the mixing channel to the outside of the channel forming unit.

[5] The front side of the flow path forming unit forms a partition section in which an upper portion is partitioned into a pair of left and right suction chambers, a lower portion is partitioned into a pair of left and right discharge chambers, and the flow path for mixing is provided. The section side forms a flow path branching section that communicates with each chamber of the partition section through a valve section that regulates the flow direction, and the flow path branching section is connected to the return pipe and the return pipe of the circulation flow path that is connected to the water heater. 2 flow paths to be connected to each other are configured, and each flow path is connected to the suction chamber and the discharge chamber on the left and right sides,
4. The bathtub as claimed in claim 2, further comprising a plurality of suction holes penetrating to the outside on the front surfaces of the suction chambers, and a hot water outlet that communicates the suction chambers with the mixing channel. Water heater adapter.

[6] The front side of the flow path forming unit forms a partition section in which an upper portion is divided into a pair of left and right suction chambers, a lower portion is divided into a pair of left and right discharge chambers, and the flow path for mixing is provided. The section side forms a flow path branching section that communicates with each chamber of the partition section through a valve section that regulates the flow direction, and the flow path branching section is connected to the return pipe and the return pipe of the circulation flow path that is connected to the water heater. 2 flow paths to be connected to each other are configured, and each flow path is connected to the suction chamber and the discharge chamber on the left and right sides,
The hot water supply port adapter for bathtubs according to claim 2 or 3, comprising a communication port for communicating the left and right discharge chambers between the inflow port and the discharge port.

  [7] The hot water inlet adapter for bathtubs according to any one of [2] to [5], wherein at least one separator section for diverting the discharge flow is provided between the inlet and the discharge port in the discharge chamber.

  [8] The bathtub according to claim 2, wherein the mixing channel is formed by a through hole that passes between the inlet and the outlet in the discharge chamber and penetrates the front plate portion of the channel forming unit. Hot water outlet adapter.

  According to the hot water inlet adapter for bathtubs according to the invention described in [1] above, the hot water in the bathtub flows into the mixing flow by the attractive force accompanying the discharge flow from the water heater through the discharge chamber toward the bathtub. Since this hot water is led out from the passage into the discharge chamber and mixed with the hot water from the water heater, it is discharged into the bathtub in a state where the temperature is lowered due to the mixing, particularly when reheating, and the discharge flow rate increases. Further, since the stirring action in the bathtub is also increased, it is possible to prevent a local high temperature portion from being generated in the bathtub and a relatively high temperature flow from reaching the bather's position.

  According to the invention described in [2], the discharge chamber and the mixing channel, and the hot water inlet and outlet from the water heater are provided in the channel forming unit disposed inside the bathtub. Since the configuration of the entire mouth adapter is simplified, the assembly to the bathtub side wall is facilitated, and the mixed hot water is discharged downward from the slit-shaped discharge port along the lower edge of the flow path forming unit. In particular, it is possible to reliably prevent a high-temperature flow from reaching the vicinity of the bather, particularly during chasing.

  According to the invention described in [3] above, the flow path configuration including the mixing flow path as a flow path forming unit is functionally integrated, and the flow path forming unit is structurally simplified accordingly. The entire adapter can be made compact and the bulk in the bathtub can be reduced.

  According to the invention described in [4], the hot water in the bathtub directly flows into the mixing channel along the upper peripheral edge of the channel forming unit, so that the pressure loss is reduced and the inflow amount is increased.

  According to the invention described in [5], the so-called non-polar type is a so-called non-polar type in which the hot water outlet adapter that provides the same function even if the connection to the forward pipe and the return pipe connected to the hot water supply is reversed, Since the hot water in the bathtub can be taken in from the suction port of the suction chamber on the road side and can flow into the mixing flow path, the temperature drop effect and the mixing effect can be enhanced by increasing the inflow of the hot water in the bathtub.

  According to the invention described in [6] above, in the above non-polar type hot water supply adapter, not only the hot water from the mixing channel is led out, but also the hot water that has entered the discharge chamber on the pause side when reheating is used. Since it can be derived from the communication port to the discharge chamber on the operating side, the inflow of the hot water in the bathtub is increased, and the temperature lowering effect and the mixing effect can be further enhanced.

  According to the invention described in [7] above, since the flow rate of the discharge flow is increased by the diversion in the separator section, the attraction action is increased, the inflow of the bath warm water from the mixing channel is increased, and the cooling effect and mixing are increased accordingly. The effect is increased.

  According to the invention described in [8], since the mixing channel can be formed simply by providing a through hole in the front plate portion of the channel forming unit, the configuration becomes extremely simple.

  Hereinafter, an embodiment of a hot water inlet adapter for bathtubs according to the present invention will be specifically described with reference to the drawings. 1 to 8 show the first embodiment, FIGS. 9 to 11 show the second to fourth embodiments, and FIGS. 12 to 16 show the fifth to eighth embodiments, respectively.

  In addition, the hot water supply port adapter of these embodiments is a hot water (hot water storage) function for supplying hot water from a hot water heater (not shown) installed outside the bathtub into the bathtub, and the hot water in the bathtub is sucked into the hot water heater for heating. This is applied to a bathtub hot water supply system having a reheating function for returning the hot water into the bathtub, and as a so-called non-polar type, the connection to the forward pipe and the return pipe (not shown) connected to the water heater is reversed. Has the same functionality.

  As shown in the vertical side view of FIG. 1 and the exploded perspective view of FIG. 2, the hot water inlet adapter of the first embodiment includes a flow path forming unit 10, an outside tank attachment member 71, an inside tank attachment member 72, and a filter member 73. It is composed of four main parts, and a ring-shaped covering packing 81 on the outside of the tank, an O-ring 82, a ring-shaped packing 83 on the inside of the tank, a ring-shaped sliding sheet 84, and an accessory part of the lock screw 85. In addition, H in a figure has shown the through-hole provided in the side wall Ta of the bathtub T. FIG.

  The flow path forming unit 10 forms a flow path as the above-mentioned non-polar type, and as shown in FIG. 3, a flow path branching section 1b and a flow path cylinder section 1c are provided on the rear side of the center part of the disk part 1a. The unit main body 1 made of a hard synthetic resin molding integrally formed, the circular front plate 2 made of a hard synthetic resin molding fitted on the front side of the disk portion 1a, and the center of the disk portion 1a A valve seat frame 31 fitted to the valve portion 3 and first and second valve bodies 32A and 32B made of a vertically long rubber plate disposed in the flow path branching portion 1b are provided.

A protruding edge portion 11 protruding forward is formed on the upper half of the peripheral edge of the disk portion 1a of the unit body 1, and the front plate 2 and the disk portion are fitted and locked to the front edge side of the protruding edge portion 11. A compartment 10a is formed with 1a. In addition, L-shaped locking grooves 11a are formed at two locations on the outer periphery of the compartment 10a at the upper left and right sides .

  As shown in FIGS. 3 to 5, an opening portion 12 constituting the valve portion 3 is formed in the central portion of the disk portion 1 a of the unit main body 1, and the opening portion 12 includes a vertical partition wall 13 and left and right horizontal rails 14. , 14 is divided into four upper and lower flow passage holes 15a to 15d. The upper and lower channel holes 15a and 15b are opened rearward and outward at the channel branching portion 1b, while the upper and lower channel holes 15c and 15d are half of the vertical partition wall 13 of the channel branching unit 1b. It communicates with the inside of the rear cylindrical cylindrical tube 1c through a circular communication chamber 10b. Further, first and second discharge valve seats 33a and 33b facing the front surface are formed in the lower left and right flow passage holes 15b and 15d, respectively, by long vertical ribs in the middle of the left and right sides and the lower side of the opening edge. Has been.

  The valve seat frame 31 constitutes first and second suction valve seats 34a and 34b facing the rear side by being fitted to the upper side of the opening 12 of the unit main body 1 from the front, and is substantially semicircular. And has a pair of left and right channel windows 31a corresponding to each of the upper and left channel holes 15a, 15c, and has a projecting contact between the top and both left and right ends. A contact piece 31b is formed, and mounting holes 31c... Are provided at a total of four places, two at the center of the lower edge and at both the left and right sides.

  The first and second valve bodies 32A and 32B correspond to respective shapes in which the opening 12 of the unit body 1 is divided into left and right, and the upper half portions are respectively upper side as first and second suction valves 35a and 35b. The first and second discharge valves of the lower left and right flow path holes 15b and 15d have sizes that can be fitted into the left and right flow path holes 15a and 15c, and the lower half is the first and second discharge valves 36a and 36b. The size is set to fit into the seats 33a and 33b. Therefore, left and right mounting holes 32a and 32a and a lateral rib 32b between them are provided in the middle in the vertical direction of both valve bodies 32A and 32B.

  As shown in FIG. 3, the unit body 1 is provided with support pins 14 a... Protruding forward at both ends of the left and right horizontal rails 14, 14, and these support pins 16. The first and second valve bodies 32A, 32B are press-fitted into the mounting holes 32a, and further fitted into the mounting holes 31c of the valve seat frame 31, so that both the valve bodies 32A, 32B and the valve seat frame 31 are unit bodies. 1 is fixed to the front surface of the disk portion 1a. In addition, both valve bodies 32A and 32B are positioned by fitting the rib 32b to the concave step portion 14b of the cross rail 14.

  Further, on the front side of the disk portion 1a of the unit main body 1, the left and right sides of the lower part are latched on the left and right inner edges of the separator parts 4A and 4A made of arcuate convex parts with the linear part inside, and the upper protruding edge part 11 Protruding plate-like front plate receivers 16b and 16b are projected from the outer edges of the pins 11b and 11b and the lower left and right flow passage holes 15b and 15d, respectively.

  Further, the unit main body 1 has a boss portion insertion hole 17 that passes through the top and the bottom of the disk portion 1 a, and a notch portion 18 that opens forward near the top end of the projecting edge portion 11. Further, on the rear surface side of the disk portion 1a, there is a rear projecting edge portion 11c extending over the entire circumference, and locking projections 19 are equally formed in the circumferential direction at three locations on the inner peripheral side.

As shown in FIG. 3, the front plate 2 has a circular shape corresponding to the disk portion 1 a of the unit main body 1, and the upper half of the front plate 2 is a region facing the upper left and right flow path holes 15 a and 15 c of the unit main body 1. A plurality of small-diameter suction holes 20 are formed at the center upper portion, screw holes 2a corresponding to the screw insertion holes 17 of the unit main body 1, and locking holes 2b corresponding to the respective locking pins 11b of the unit main body 1 at both side edges. , 2b are formed so as to pass through in the front-rear direction, and further, notches 2c serving as inlet portions of the respective locking grooves 11a of the unit body 1 are provided at two positions on the periphery.

Further, as shown in FIG. 7, on the rear surface side of the front plate 2, arc partition ribs 21 and 21 extending in an arc shape from the position of the screw hole 2a to the left and right sides, and linearly downward from the position of the screw hole 2a. The vertical partition rib 22 that extends, the horizontal partition ribs 23 and 23 that connect between the middle portion of the vertical partition rib 22 and the arc partition ribs 21 and 21 on the left and right sides, and the discharge guide rib that branches downward and obliquely downward from each horizontal partition rib 23 24, 24, arc-shaped lead-out guide ribs 25, 25 facing the outside of the lower part of the arc partition ribs 21, 21 on both the left and right sides, and the boss portions 26 around the screw holes 2a. Projected. Further, in the lower part on the rear surface side, arcuate shallow recesses 27 and 27 corresponding to the separator parts 4A and 4A on the unit body 1 side are formed, and further, the first and second discharge valve seats 33a on the unit body 1 side are formed. The linear V-shaped grooves 29 and 29 are provided at positions opposed to the lower edge of 33b. Thus, the flow path forming unit 10 includes the first and second valve bodies 32A and 32B and the valve seat frame 31. The locking pins 11b and 11b on the unit body 1 side are inserted into the locking holes 2b and 2b of the front plate 2 with respect to the disk portion 1a of the unit body 1 to which the unit body 1 is mounted. The above-described compartment 10a is configured between the disk portion 1a and the front plate 2 by being inserted into the boss portion insertion hole and locking the front plate 2 by internal fitting.

  In this compartment 10a, as shown in FIG. 8, the projecting edge portion 11 on the unit body 1 side and the ribs 21 to 25 on the front plate 2 side constitute a partition, and the separator portion 4A on the unit body 1 side, 4A and the front plate receiver 16b are also in close contact with the rear side of the front plate 2 to form a wall.

  As a result, left and right first and second suction chambers 51a and 51b separated by the partition ribs 21 to 23 are formed on the upper side in the compartment 10a, and a protruding edge is formed along the upper peripheral edge. A mixing channel 6 </ b> A is formed between the portion 11 and the arc partition ribs 21, 21. The lower side of the compartment 10a is partitioned into left and right first and second discharge chambers 52a and 52b, with the lower side of the vertical partition rib 22 as a virtual boundary.

  The first suction valve 51a is provided in the first suction chamber 51a, the second suction valve 35b is provided in the second suction chamber 51b, the first discharge valve 36a is provided in the first discharge chamber 52a, and the second discharge chamber 52b is provided. The second discharge valve 36b faces each other.

  Further, the lower edge side of the compartment 10a where the projecting edge portion 11 is absent constitutes a discharge port 53 that is open to the outside in a slit shape. Further, in the first and second discharge chambers 52a and 52b, the outlet 54 and the discharge port 53 of the discharge valves 36a and 36b are separated from each other by the separator portion 4A. Both the discharge chambers 52 a and 52 b communicate with each other through a communication port 55 formed below the lower end 22 a of the vertical partition rib 22.

  In the mixing channel 6A, the notch 18 provided in the projecting edge portion 11 of the unit main body 1 opens to the outside as the introduction port 60 at the top portion, and between the lower end of the discharge guide rib 24 and the outlet guide rib 25 on the left and right sides. Faces the side of the first and second discharge chambers 52a, 52b as the outlet 61.

  As shown in FIGS. 1 and 2, the outside-tubing mounting member 71 is made of a metal such as brass or stainless steel, and includes a flange portion 71b at the open front end of an outer cylindrical portion 71a having a substantially cylindrical shape. A pair of outer pipe connecting portions 70a and 70b are brazed to the closed rear end portion of the cylindrical portion 71a, and a cylindrical inner cylindrical portion 71c opened forward is integrally formed coaxially inside the outer cylindrical portion 71a. Has been. The annular space 7a between the outer cylinder portion 71a and the inner cylinder portion 71c communicates with the outer tube connection portion 70a, and the inner space 7b of the inner cylinder portion 71c communicates with the outer tube connection portion 70b. Further, a female screw 74a is formed on the inner periphery of the front portion of the outer tube portion 71a, and an O-ring 82 is fitted on the inner periphery side of the front end of the inner tube portion 71c located inward from the front end of the outer tube portion 71a. Has been.

  Accordingly, the ring-shaped covering packing 81 is fitted to the flange portion 71 b of the outside-tubing attachment member 71. The packing 81 is a molded product having a substantially U-shaped cross section made of synthetic rubber having a substantially U-shaped cross section, and the flange portion 71b is fitted into the annular fitting groove 81b on the inner periphery thereof. Are fixed tightly so as to wrap around the entire outer peripheral surface. It should be noted that a plurality of concentric contact irregularities 81c are formed on the front and back surfaces of the thick main body 81b constituting the front side of the ring-shaped covering packing 81.

  As shown in FIGS. 1 and 2, the in-tank mounting member 72 is made of a hard resin molding such as polyacetate resin, and a flange portion 72b is integrally formed at the front end of the cylindrical portion 72a with both ends open. A male screw 74b corresponding to the female screw 74a of the outside-tubing attachment member 71 is provided on the outer periphery of the shaped portion 72a. An annular stepped portion 75a that steps down from the inner peripheral side to the outer peripheral side and an annular groove 75b on the outer peripheral side are formed on the rear surface side of the flange portion 72b. Further, a plurality of bottomed lock holes 76 are formed at regular intervals in the circumferential direction on the front side of the flange portion 72b, and a plurality of L-shaped locking grooves 77 are arranged at regular intervals in the circumferential direction. Is formed.

  Therefore, when the tank mounting member 72 is used, the ring-shaped sliding sheet 84 and the ring-shaped packing 83 are externally fitted to the cylindrical portion 72a, and these are held at positions close to the flange portion 72b.

  The ring-shaped packing 83 includes a thick ring portion 83a having a substantially spade shape with a cross section pointed inward, and a thin ring portion 83b extending from the thick ring portion 83a to the center side over the entire circumference. The inner peripheral edge of the thin ring portion 83b is substantially in contact with the cylindrical portion 72a, and is formed of an integrally molded product such as synthetic rubber, and is fitted to the cylindrical portion 72a of the in-tank mounting member 72. 83a faces the annular groove 75b of the flange portion 72b.

  Further, the ring-shaped sliding sheet 84 is made of a hard or semi-rigid flat synthetic resin sheet having a high surface slipperiness such as polyolefin or polyester, and is formed from the ring-shaped packing 83 with respect to the cylindrical portion 72a of the in-tank mounting member 72. Is also fitted on the rear side, that is, on the flange portion 72b side. In this fitted state, the inner peripheral edge substantially contacts the cylindrical portion 72a, and the outer peripheral edge is positioned on the annular groove 75b of the flange portion 72b. The dimension is set so as to cover the maximum thickness portion of the thick ring portion 73 a of the packing 83.

  As shown in FIGS. 1 and 2, the filter member 73 is made of a dish-shaped hard synthetic resin molding, and the circular front wall portion 73a has a large number of suction holes 78 that are small in diameter and penetrate the front and back. It is formed over substantially the entire surface. Further, the peripheral edge portion 73b protruding rearward from the front wall portion 73a is set to have a lower protrusion height corresponding to the slit-like discharge port 53 of the flow path forming unit 10 and has a flow path on the inner periphery. Locking projections (not shown) corresponding to the respective locking grooves 11a of the forming unit 10 are formed.

  In order to attach the hot water supply port adapter having the above-described configuration to the bathtub T, first, the tank outer mounting member 71 and the tank inner mounting member 72 are screwed through the through hole H of the bathtub side wall Ta, and the flange portions 71b of both 71 and 72 are connected. , 72b, and the bathtub side wall Ta is sandwiched from inside and outside through the packings 81 and 83. That is, the tubular portion 72a of the in-tank mounting member 72 is aligned with the outer tubular portion 71a of the outside-tubing mounting member 71 disposed outside the bathtub side wall Ta through the through hole H from the inside of the bathtub side wall Ta, and the in-tank mounting member The male screw 74b of the cylindrical portion 72a may be screwed into the female screw 74a of the outer cylindrical portion 71a and tightened by a rotation operation on the 72 side.

  In the above screwing operation, since the ring-shaped sliding sheet 84 is interposed between the flange portion 71b of the in-tank mounting member 72 and the ring-shaped packing 83, the sliding sheet 84 is from the beginning to the end of the operation. Because of the sliding action, the joint mounting of the in-tank mounting member 72 and the packing 83 is suppressed, so that the packing 83 is not twisted and ruptured and is not in a distorted deformation state, and the in-tank mounting member 72 is lightly and easily rotated. it can.

  At the end of the screwing, as the thick ring portion 83a of the packing 83 enters the annular groove 75b of the flange portion 72b, the ring-shaped sliding sheet 83 is bent at the annular step portion 75a, and the outer peripheral side thereof is the annular groove. The outer diameter is reduced by bending to 75b and finally comes off from the thick ring portion 83a of the packing 83 as shown in FIG. 1, and the thick ring portion 83a is in direct pressure contact with the bottom surface of the annular groove 75b Therefore, a good watertight sealability can be obtained.

  Thus, when the screw connection of both mounting members 71 and 72 is completed, the outer pipe connecting portions 70a and 70b of the outer tank mounting member 71 are connected to the return pipe and the return pipe connected to the water heater, and from the inside of the bathtub T The flow path forming unit 10 and the filter member 73 are attached to the inner attachment member 72. In addition, since the tank outer attachment member 71 is on the non-rotating side, the outer pipe connection portions 70a and 70b may be connected before the screwing operation.

  The flow path forming unit 10 is fitted into the in-tank mounting member 72 from the flow path cylinder part 1c side with the discharge port 53 being on the lower side, and the flow path cylinder part 1c enters the in-tank mounting member 72. It is made to insert in the inner cylinder part 71c of the outer tank attachment member 71 currently performed. In addition, in this insertion part, a clearance gap is sealed with the O-ring 6 fitted to the inner periphery of the inner cylinder part 71c. Then, the rear projecting edge portion 11c of the disk portion 1a is externally fitted to the flange portion 72b of the mounting member 72, and a little twisting is performed in a state in which the respective rear side locking projections 19 are fitted into the locking grooves 77 on the outer periphery of the flange portion 72b. If operated, these locking projections 19 enter the rear end position shifted in the circumferential direction from the inlet side of the locking groove 77, so that the unit 10 cannot be pulled out in the front-rear direction with respect to the in-tank mounting member 72. Become.

  After that, if the lock screw 85 is screwed into the screw hole 2a of the front plate 2, the tip of the lock screw 85 passes through the disk portion 1a and is on the front side of the flange portion 72b of the in-tank mounting member 72 as shown in FIG. Since the flow path forming unit 10 cannot be twisted with respect to the in-tank mounting member 72, the engagement of the flow path forming unit 10 with the in-tank mounting member 72 is unexpectedly performed. It can be prevented from being released.

  Since a large number of locking grooves 77 and lock holes 76 on the in-tank mounting member 72 side are formed at regular intervals in the circumferential direction, the rotation stopping posture of the in-tank mounting member 72 after screwing is changed. In addition, the unit 10 can be connected in the most preferable posture with the discharge port 53 on the lower side by selecting the locking groove 77 and the lock hole 76 to be used.

  The filter member 73 is also put on the front surface of the partition chamber 10a of the flow path forming unit 10, and each locking protrusion (not shown) on the inner periphery of the peripheral edge portion 73b is fitted into the locking groove 11a on the outer periphery of the partition chamber 10a. By slightly twisting in this state, it is engaged and connected to the unit 10 so that it cannot be pulled out in the front-rear direction. In addition, unlike the flow path forming unit 10, the filter member 73 is preferably not easily locked so that it can be easily removed to prevent clogging due to dirt.

  In this case, since the flow path configuration required as the hot water supply adapter is functionally compact as the flow path forming unit 10, there is an advantage that it is easy to assemble to the bathtub side wall Ta and is not bulky in the bathtub T. is there.

  Thus, in the hot water supply adapter attached to the bathroom side wall Ta in a penetrating state, as shown in FIG. 1, the first suction chamber 51a and the first discharge chamber 52a (FIG. 8) located on the left side of the partition chamber 10a of the flow path forming unit 10. The flow path F1 connected to the outside of the flow path cylinder part 1c through the flow path branch part 1b from the reference) is connected to the outer tube through the annular space 7a between the outer cylinder part 1a and the inner cylinder part 1b of the outside tank mounting member 71. It communicates with the portion 70a. The flow path F2 connected from the second suction chamber 51b and the second discharge chamber 52b located on the right side of the compartment 10a to the inside of the flow tube cylinder 1c through the flow branch portion 1b The inner space 7b of the cylindrical portion 1b communicates with the outer pipe connecting portion 70b.

  Although not shown in FIG. 1, the front wall portion 73a of the filter member 73 has a large number of suction holes 78 over substantially the entire surface (see FIG. 2), and the front plate 2 of the flow path forming unit 10 In addition, since a large number of suction holes 20 are provided facing both the suction chambers 51a and 51b (see FIGS. 2, 3 and 7), bath hot water can flow into the suction chambers 51a and 51b from the front side. .

  This hot water supply adapter is a non-polar type, and the same function can be obtained regardless of which of the two flow paths F1 and F2 is on the suction side or the discharge side.

  For example, if the flow path F2 is connected to the forward pipe on the suction side of the water heater in FIG. 1, the second suction valve 35b is deformed inward by the forced suction from the water heater side and is opened at the time of reheating. Bathtub hot water flows into the flow path F2 from the front side of the second suction chamber 51b and is sent to the hot water supply side, but the lower second discharge valve 36b is moved to the second discharge valve seat 33b by forced suction from the hot water supply side. The valve is closed by pressure contact. On the other hand, since warm water is sent from the hot water supply side to the flow path F1 that has become the discharge side, the first discharge valve 36a is deformed to the outside by the feed pressure and is opened to flow into the first discharge chamber 52a. Although the supplied hot water is discharged into the bathtub T from the discharge port 53, the upper first suction valve 36a is brought into pressure contact with the first suction valve seat 34a by the feed pressure and maintains the closed state.

  Therefore, even if the flow path F1 is connected to the suction side and the flow path F2 is opposite to the discharge side, it is the same only by sucking the hot water in the bathtub from the first suction chamber 51a and discharging the supplied hot water from the second discharge chamber 52b. That is. During hot water operation, warm water is supplied from the hot water supply side through both flow paths F1 and F2, and therefore both discharge valves 36a and 36b are opened to discharge both the first and second discharge chambers 52a and 52b. Supply hot water is discharged from the outlet 53. Of course, at this time, both suction valves 35a and 35b are closed.

  In the hot water supply adapter according to the first embodiment, in reheating, for example, when the hot water in the bathtub is sucked from the second suction chamber 51b and the hot water is discharged from the first discharge chamber 52a, as shown in FIG. The substantially downward discharge flow from the chamber 52a is branched into the left and right, that is, the center side and the side side as shown by white arrows by the separator portion 4A, and is discharged into the bathtub.

  At this time, since the flow path is narrowed and the flow velocity is increased in the separator portion 4A, an attractive force is exerted in the vicinity of the discharge flow, and this attractive force acts on the outlet 61 of the mixing flow path 6A. As shown, the hot water in the bathtub continuously flows into the mixing channel 6A from the inlet 60, is continuously led out from the outlet 61, and is caught in the side-side discharge flow.

  In addition, since the same attractive force acts on the central side, the hot water in the bathtub that has entered the second discharge chamber 52a that is at rest is continuously transferred from the communication port 55 to the first discharge chamber 52a as indicated by the black arrow. It is led out and is caught in the discharge flow on the center side.

  Accordingly, the hot water from the hot water heater and the low-temperature bathtub hot water are effectively mixed in the vicinity of the discharge port 53, and the discharge flow is discharged into the bathtub in a lowered temperature, and the discharge flow rate is increased to increase the bathtub flow rate. Therefore, it is possible to reliably prevent a local high temperature portion from being generated in the bathtub or a relatively high temperature flow from reaching the bather's position.

  In this case, since the separator portion 4A has an arcuate shape, the discharge flow is divided into a direct current flowing along the straight portion on one side and a curved flow along the curved surface portion on the opposite side. There is an advantage that the shunt flow collides in the vicinity of 53 and the stirring effect is increased.

  In the hot water inlet adapter for bathtubs of this invention, the flow path structure for mixing bathtub hot water with the hot water supplied from the water heater as described above can be variously set in addition to the illustrated first embodiment. Although other embodiments are illustrated below, the partition configuration of the partition chamber 10a in these embodiments is the same as that of the first embodiment. Moreover, about each component common to 1st embodiment, 1st embodiment same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the second embodiment shown in FIG. 9, in addition to the separator portion 4A described above, the orientation of the outlet 54 and the outlet 53 in each of the first and second discharge chambers 52a and 52b is different from that of the separator 4A. An inverted arcuate separator 4B is arranged. In this case, since the two separator portions 4A and 4B are arranged in the discharge chambers 52a and 52b, respectively, the discharge flow is divided into three, and the flow velocity is further increased. Accordingly, the inlet 60 of the mixing channel 6B along the upper peripheral edge is correspondingly increased to four locations on the projecting piece 11, and the amount of tub hot water discharged from the outlet 61 is increased to lower the temperature. And the stirring action is enhanced.

  In the third embodiment shown in FIG. 10, between the outlet 54 and the outlet 53 in each of the first and second discharge chambers 52a and 52b, in addition to the separator portions 4A and 4B described above, an intermediate between them is provided. In addition, a teardrop-shaped separator portion 4C is disposed at the same time, and introduction ports 60 of the mixing channel 6C along the upper peripheral edge are provided at two locations on the projecting piece portion 11. In this case, the discharge flow is divided into four and the flow velocity is further increased, and the entrainment of the bath warm water from the outlet 61 and the communication port 55 of the mixing channel 6C is increased. Because of the teardrop shape, the diverted flow on both sides becomes a curved flow and collides in the vicinity of the discharge port 53, so that the stirring effect is further enhanced.

  In the fourth embodiment shown in FIG. 11, each of the first and second discharge chambers 52a and 52b is not provided with a separator, and the same inlet 60 as in the second embodiment has four mixing flows. Road 6B. In this case, the attracting force accompanying the discharge flow is not so strong, but since there are many inlets 60 of the mixing channel 6B, the amount of the tub warm water to be derivated from the outlet 61 increases, and the temperature lowering action and the stirring action by mixing are increased. Is fully demonstrated.

  In the fifth embodiment shown in FIGS. 12A and 13, the same inlet 60 as in the third embodiment is used as two mixing channels 6C, but the first and second discharge chambers 52a, 52b Each is not provided with a separator portion, and a plurality of through holes 62 are formed in the front plate 2 so as to penetrate between the inlet 54 and the outlet 53 in both the discharge chambers 52a and 52b. .

  In the case of this fifth embodiment, in addition to the mixing of the bath warm water from the mixing flow path 6C by the attracting force due to the discharge flow, the bath warm water entering and mixing through the through holes 62 of the front plate 2 is mixed. Therefore, the temperature lowering action and the stirring action become larger. Thus, the through holes 62 of the front plate 2 itself constitute a flow path for mixing the hot water in the bathtub.

  In the sixth embodiment shown in FIGS. 12B and 14, the mixing flow path 6 </ b> D along the upper peripheral edge is provided with a plurality of (six in the drawing) inlets 63 in the front plate 2, and Only one teardrop separator 4C is provided in each of the first and second discharge chambers 52a and 52b. In this case, the derivation of the hot bath water from the outlet 61 of the mixing channel 6D is the same as in the other embodiments, but both the discharge flow diverted by the teardrop-shaped separator portion 4C are curved, The stirring action due to the mutual collision is increased.

  In the seventh embodiment shown in FIG. 15, the mixing channel 6E along the upper peripheral edge is not provided with an inlet that directly opens to the outside, and the mixing channel 6E and the first and second suction chambers 51a, The arc partition ribs 21 and 21 partitioning 51b are provided with a plurality of (three in the figure) hot water inlets 64, and the first and second discharge chambers 52a and 52b are not provided with separator portions.

  In the seventh embodiment, when the hot water supplied from the water heater flows into the first discharge chamber 52a and is discharged, the attractive force associated with the discharge flow (white arrow in the figure) is introduced into the mixing flow path 6E. By acting on the outlet 61, the inside of the mixing flow path 6E becomes negative pressure, but the mixing flow path 6E communicates with the second suction chamber 51b being stopped through the hot water inlet 64. The hot water in the bathtub flows into the second suction chamber 51b from the front side, flows out into the mixing channel 6E through the hot water inlet 64, as indicated by the black arrow, and passes through the outlet 61 of the mixing channel 6E to the second discharge chamber. It leads to 52b and mixes into the discharge flow. As in the other embodiments, the hot water in the bathtub is introduced through the communication port 55 from the second discharge chamber 52b that is in suspension at the same time.

  In the eighth embodiment shown in FIG. 16, as in the seventh embodiment, the mixing channel 6 </ b> F along the upper peripheral edge is not provided with an inlet that directly opens to the outside, but the mixing channel 6 </ b> F is not provided. And the first and second suction chambers 51a and 51b are each provided with one hot water inlet 64, and the first and second discharge chambers 52a and 52b are provided with the first embodiment. Similarly, only one arcuate separator 4A is provided.

  In the case of this eighth embodiment, the hot water in the bathtub is mixed from the suspended second suction chamber 51b through the hot water inlet 64 by the attractive force accompanying the discharge flow of the first discharge chamber 52a, as in the seventh embodiment. 6F and led out from the outlet 61 of the mixing channel 6F to the second discharge chamber 52b. However, the discharge flow is divided by the separator portion 4A to increase the flow velocity, and the attractive force becomes strong. The action and the stirring action become larger, and the hot water in the bathtub can be sufficiently introduced into the mixing flow path 6F without increasing the hot water inlet 64.

  In the above first to eighth embodiments, the non-polar type hot water supply adapter for bathtubs has been exemplified. However, the present invention is also applicable to non-polar type hot water supply adapters. Moreover, in this invention, various design changes can be made in addition to the embodiment for the detailed configuration such as the valve portion structure, the flow channel configuration, and the filter member configuration in the flow channel forming member unit.

It is a vertical side view which shows the hot-water port adapter for bathtubs which concerns on 1st embodiment of this invention in the assembly | attachment state. It is a disassembled perspective view of the hot water supply adapter for bathtubs. It is a disassembled perspective view of the flow-path formation unit of the hot-water supply port adapter for the bathtub. The unit main body of the flow path forming unit is shown, in which (A) is a front view, and (B) is a cross-sectional view of the BB plug of FIG. It is a rear view of the same unit main body. It is a side view of the same unit main body. It is a rear view of the front board of the flow path formation unit. It is a vertical front view of the flow path forming unit. It is a vertical front view of the flow path formation unit in the second embodiment. It is a vertical front view of the flow path formation unit in the third embodiment. It is a vertical front view of the flow path formation unit in the fourth embodiment. The flow-path formation unit in the 5th and 6th embodiment is shown, (A) A figure is a half front view of the front board of 5th embodiment, (B) A figure is a half front view of the front board of 6th embodiment. is there. It is a longitudinal front view of the flow path formation unit in the fifth embodiment. It is a vertical front view of the flow path formation unit in the sixth embodiment. It is a vertical front view of the flow path formation unit in the seventh embodiment. It is a vertical front view of the flow path formation unit in the same eighth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unit main body 1b Channel branch part 10 Channel formation unit 10a Compartment room (partition part)
2 Front plate 20 Suction port 3 Valve unit 4A-4C Separator unit 51a First suction chamber (suction port)
51b Second suction chamber (suction port)
52a First discharge chamber 52b Second discharge chamber 53 Discharge port 54 Inlet port 55 Communication port 6A to 6F Mixing channel 60 Inlet port 61 Outlet port 62 Through hole 64 Hot water port F1, F2 Channel H Through hole T Bathtub Ta Bathtub Side wall

Claims (8)

It is a hot water outlet adapter for a bathtub that is attached to the side wall of the bathtub in a penetrating state and is piped to a water heater having a reheating function installed outside the bathtub,
A hot water suction port in the bathtub and a discharge port of hot water supplied from the hot water heater, and a discharge chamber into which hot water supplied from the hot water supply flows on the upstream side of the discharge port; A mixing flow channel is provided for directing the warm water directly into the discharge chamber inside the tank,
The hot water from the water heater is drawn into the discharge chamber from the mixing channel by the attractive force accompanying the discharge flow from the water heater through the discharge chamber into the bathtub, and this hot water is mixed with the hot water from the water heater. Then, a hot water inlet adapter for a bathtub configured to be discharged into the bathtub.   The flow path forming unit disposed inside the bathtub is provided with the discharge chamber and the mixing flow path, and an inlet of hot water supplied from a water heater is opened on the upper side of the discharge chamber. The hot-water supply port adapter for bathtubs according to claim 1, wherein the discharge port is opened in a slit shape along the lower peripheral edge.   The mixing channel is formed along the upper peripheral edge of the channel forming unit, and the lower end side of the mixing channel is opened to the discharge chamber as a discharge port, and the mixing channel is disposed above the discharge port. The hot-water supply port adapter for bathtubs according to claim 2, which has an introduction port for a flow path.   The hot water inlet adapter for bathtubs according to claim 2 or 3, wherein the introduction port of the mixing channel opens directly to the outside of the channel forming unit from the mixing channel. The front portion side of the flow path forming unit forms a partition portion in which the upper portion is divided into a pair of left and right suction chambers, the lower portion is divided into a pair of left and right discharge chambers, and the flow passage for mixing is provided. A flow path branching portion that communicates via a valve portion that regulates the flow direction with respect to each chamber of the partition portion,
Two flow paths connected to the return pipe and return pipe of the circulation flow path connected to the water heater by the flow path branching section are configured, and each flow path is connected to the suction chamber and the discharge chamber on the left and right sides,
4. The bathtub as claimed in claim 2, further comprising a plurality of suction holes penetrating to the outside on the front surfaces of the suction chambers, and a hot water outlet that communicates the suction chambers with the mixing channel. Water heater adapter. The front portion side of the flow path forming unit forms a partition portion in which the upper portion is divided into a pair of left and right suction chambers, the lower portion is divided into a pair of left and right discharge chambers, and the flow passage for mixing is provided. A flow path branching portion that communicates via a valve portion that regulates the flow direction with respect to each chamber of the partition portion,
Two flow paths connected to the return pipe and return pipe of the circulation flow path connected to the water heater by the flow path branching section are configured, and each flow path is connected to the suction chamber and the discharge chamber on the left and right sides,
The hot water supply port adapter for bathtubs according to claim 2 or 3, comprising a communication port for communicating the left and right discharge chambers between the inflow port and the discharge port.   The hot water inlet adapter for bathtubs according to any one of claims 2 to 6, further comprising at least one separator portion for diverting the discharge flow between the inlet and the discharge port in the discharge chamber.   The hot water inlet for a bathtub according to claim 2, wherein the mixing flow path is formed by a through hole that passes between a front plate portion of the flow path forming unit facing the inlet and the discharge port in the discharge chamber. adapter.

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