JPH10332208A - Hot water circulation connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water circulation connector which can prevent hot water discharged from one hot water pipe into a bathtub from directly striking a bathing person, can prevent fur, dust and the like from flowing into a hot water pipe without installing a filter, can be used for connecting a hose with the hot water pipe and can be used for connecting either of two hot water pipes installed inside with a supply connection pipe and a return connection pipe without causing any trouble. SOLUTION: This hot water circulation connector comprises a circulation port body 1, a holding cylinder 14, an annular body 19, a filter cap 24 and a pair of hot water pipes 31. Each of the hot water pipes 31 is provided with a branch pipe part 34 at a vicinity of a tip of a horizontal pipe part 32, which is provided with a first check valve 37. The branch pipe part 34 is provided with a second check valve 38, the check valve 37 of each hot water pipe 31 is opened to an inward direction of the horizontal pipe part 32, and the second check valve is opened to an outlet direction of the branch pipe part 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water circulation connection device attached to a side surface of a bath tub for forcibly circulating hot water between a bath tub and a hot water supply device.

[0002]

2. Description of the Related Art A bathtub 1 generally installed in each home or the like.
01 (see FIG. 7), for example, hot water is circulated between a hot water supply device 102 installed outdoors and a bathtub 101 installed indoors so that hot water is supplied to a hole 104 formed in a side surface portion 103 of the bathtub 101. The circulation connector 105 is attached, and the connection pipe 106 and the extension connection pipe 10
8, as well as connecting the connecting pipe 107 and the extension connecting pipe 109,
Further, each of the extension connection pipes 108 and 109 is connected to the water heater 102 to connect the water heater 102 and the bathtub 101.

By operating a circulating pump (not shown) built in the hot water supply device 102, the bathtub 10
1 is supplied to the hot water supply device 102 via the connection pipe 106, the extension connection pipe 108 and the connection pipe 107, the extension connection pipe 109.
The hot and cold water to be circulated is heated by a combustion unit (not shown) in the hot water supply device 102.

Therefore, in the conventional hot water circulation connector 105 as described above, the hot water discharged from the hot water circulation connector 105 is discharged into the bathtub from the front surface of the hot water circulation connector 105 via a filter. It was of a structure, and the hot hot water discharged directly hit the body during bathing and was dangerous.

[0005] Further, in the conventional hot and cold water circulation connector 105,
When the hot and cold water in the bathtub flows into the hot and cold water circulation connection device 105, it is necessary to provide a filter at the hot and cold water inflow port so as to prevent scale and dust from entering together with the hot water.

Further, when the remaining hot water after bathing is used for washing, even if it is desired to supply the remaining hot water in the bathtub to the water tub of the washing machine by using the hot-water circulation connector 105, a hot-water passage pipe connecting a hose. Is located in the hot water circulation connector 105, so that the hose cannot be connected, and the remaining hot water is automatically supplied to the water tank of the washing machine by using the hot water circulation connector 105 together with the circulation pump described above. I couldn't. For this reason, the remaining hot water in the bath tub has to be fetched with a bucket or the like and put into the water tub of the washing machine, which is very difficult.

[0007]

SUMMARY OF THE INVENTION The present invention has been developed in view of the above points, and an object of the present invention is to supply hot water discharged from one hot water passage pipe into a bathtub. To avoid direct contact with the person, prevent the inflow of scale and dust into the hot water passage pipe without providing a filter, and connect a hose to the part of the hot water passage pipe that protrudes into the bathtub to connect the hose to the inside of the bathtub. The remaining hot water can be easily drawn out, and even if the outgoing connection pipe and the return connection pipe are connected to either of the two hot water passage pipes connected to the circulation port body, they can be used without any problems. It is an object of the present invention to provide a hot water circulation connection device.

[0008]

SUMMARY OF THE INVENTION The present invention has the following configuration in order to effectively achieve the above object. In other words, the hot and cold water circulation connection device of the present invention includes a circulation port body attached to the hole formed in the side portion of the bathtub from the outside of the bathtub, and a pinch that is inserted into the hole from the bathtub and connected to the circulation port body. A cylinder body, an annular body connected to the sandwiching cylinder body in the bathtub, a filter cap removably attachable to the annular body, and a pair of hot water passage pipes, the circulation port body having one end opened and other A closed end is formed, and a through hole is formed in the closed end of the other end to connect each of the hot and cold water passage pipes. Each hot and cold water passage pipe has a branch pipe portion formed near a front end of the horizontal pipe portion. And a first check valve is provided at the end of the horizontal pipe part and a second check valve is provided at the branch pipe part. The first check valve of each hot and cold water passage pipe is provided in the inward direction of the horizontal pipe part. So that the second check valve opens in the direction of the discharge port of the branch pipe. The circulating port body is connected to the holding cylinder via a hole in the side surface of the bathtub, and the rear ends of the horizontal pipe sections of the hot and cold water passage pipes are connected to the through holes of the circulating port body, respectively, and pinched. When the annular body and the filter cap are sequentially attached to the tubular body, the branch pipe portion of each hot water passage pipe is configured to protrude into the bathtub from the outer peripheral portion of the annular body. The second check valve of the hot water passage pipe closes and the first check valve opens to allow the hot water in the bathtub to flow into the horizontal pipe portion through the filter cap, and at the same time, the first check valve of the other hot water passage pipe. The stop valve is closed and the second check valve is opened so that hot water in the horizontal pipe section is discharged from the branch pipe section into the bathtub.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of the hot and cold water circulation connection device of the present invention, FIG. 2 is a front view of the inside with a filter cap removed,
FIG. 3 is a front view of the hot water circulation connection device of the present invention, and FIG. 4 is an explanatory diagram showing a hot water passage pipe, a first check valve, and a second check valve.

In the drawing, reference numeral 1 denotes a circulation port body which is attached to a hole 4 formed in the side surface portion 3 of the bathtub 2 from the outside 5 of the bathtub 2 and has a bottomed metal molded member having an opening 6 formed at one end. In addition, a flange 7 is formed on the outer periphery of the opening 6. Further, through holes 9 (one not shown) are formed at two locations in the closing portion 8 at a predetermined interval. A cylindrical portion 10 to which one end of a hot water passage pipe described later can be fitted is inserted into each through hole 9.
a is protruded inward, and a tubular portion 10b for connecting a hot water connection pipe (not shown) is protruded outward. A concave groove 11 is formed in the inner peripheral portion near the tip of each inner cylindrical portion 10a, and a packing 12 is fitted in the concave groove 11. Each of the tubular portions 10a and 10b and the flange portion 7 are formed integrally with the circulation port body 1. A female screw 13 is formed on the inner peripheral portion of the circulation port body 1 on the opening 6 side.

Reference numeral 14 denotes a holding cylinder which is inserted into a hole 4 opened from the inside of the bathtub 2 to the side surface portion 3 and connected to the circulation port body 1, and is formed of a synthetic resin. This holding cylinder 14 has a flange 15 at one end and a body 16
An external thread 17 is formed on the outer periphery of the. A locking groove 18 is formed on the outer periphery of the flange 15. The body part 16 is inserted into the hole 4 of the side part 3 and the female screw 1 of the circulation port body 1 is inserted.
3, the male screw 17 is screwed and connected.

Reference numeral 19 denotes an annular body formed of a synthetic resin, and has a locking projection 20 which can be locked in the locking groove 18 of the holding cylinder 14 at an inner peripheral portion at one end. The elastic body 19 can be detachably engaged with the engaging groove 18 by the elastic force of the annular body 19. At the other end of this annular body 19,
A filter cap locking groove 21 is formed. A cut-out portion 2 is formed in the outer peripheral portion 22 of the annular body 19 so that each of hot water connection pipes described below can be engaged with one end of the annular body 19 respectively.
3 are formed at a predetermined interval.

Reference numeral 24 denotes a filter cap. A large number of openings 27 are formed in a front portion 26 of a circular frame 25 made of synthetic resin, and a circular filter 28 is provided inside the circular frame 25. It is stuck. Further, at three equally spaced locations on the inner periphery of the outer peripheral frame portion 29 of the circular frame body 25, there are formed convex portions 30 which can be detachably engaged with the engaging grooves 19a of the annular body 19.

Reference numeral 31 denotes a hot water passage pipe serving as a passage for sending hot water from the bathtub 2 to a hot water supply device (not shown) or a passage for sending hot water from the hot water supply device (not shown) to the bathtub 2. The hot water passage pipe 31a for the forward path and the hot water passage pipe 31b for the return path are configured as a pair.

The hot / water passage pipe 31 (31a, 31b) is an L-shaped pipe comprising a horizontal pipe section 32 and a branch pipe section 34 branched at a right angle from the vicinity of one end 33 of the horizontal pipe section 32. The horizontal pipe part 32 and the branch pipe part 34 communicate with each other, and the ends 33, 35, 36 of the horizontal pipe part 32 and the branch pipe part 34 are open.

The horizontal tube 32 has a length such that one end 33 is adjacent to the filter cap 24 when the end 35 is connected to the cylindrical portion 10a of the circulation port body 1. A first check valve 37 is fitted to one end 33 of the horizontal tube portion 32.

The branch pipe portion 34 has a length that protrudes outward from the cutout portion 23 of the outer peripheral portion 22 of the annular body 19. The base portion 37 (see FIG. 4) of the branch pipe portion 34 is cut off at a half circle to form a cutout opening 37a, and the second check valve 38 can be fitted into the cutout opening 37a. .

The first check valve 37 comprises a cylindrical frame 39 and a valve element 41 for opening and closing the inner hole 40 of the cylindrical frame 39. A locking piece 43 formed on a part of the body 41 is rockably locked.
A valve seat portion 44 is formed inside the cylindrical frame 39, and the valve body 41 abuts on the valve seat portion 44 so that the inner hole 40 of the cylindrical frame 39 is closed. The valve element 41 is pressed toward the filter cap 24 by hot water to thereby form the inner hole 40 of the cylindrical frame 39.
And the inner hole 40 of the cylindrical frame 39 is opened by being pressed from the filter cap 24 side by hot water.

The second check valve 38, like the first check valve 37, comprises a cylindrical frame 45 and a valve body 47 for opening and closing an inner hole 46 of the cylindrical frame 45, and a part of the cylindrical frame 45. A locking piece 49 formed in a part of the valve body 47 is swingably locked in a locking hole 48 formed in the valve body 47. A valve seat 50 is formed inside the cylindrical frame 45, and the valve body 47 abuts on the valve seat 50 to close the inner hole 46 of the cylindrical frame 45, and the valve body 4 is closed.
7 is opened by moving away from the valve seat 50. Also, the right half 45 of the cylindrical frame 45 (see FIG. 4)
a is formed with a radius that matches the outer diameter of the cutout opening 37a of the branch pipe portion 34, and the left half 45b is formed with a radius that matches the inner diameter of the cutout opening 37a of the branch pipe portion 34. By inserting the cylindrical frame 45 from the left half 45b into the cutout opening 37a of the branch pipe section 34, the second check valve 3
8 can be fitted to the branch pipe portion 34.

The second check valve 38 opens the inner hole 46 of the cylindrical frame 45 when the valve body 47 is pressed against the one end 36 side of the branch pipe portion 34 by hot and cold water. The inner hole 46 of the cylindrical frame 45 is closed by being pressed from the 47 side.

The outgoing hot water passage pipe 31a to which the first check valve 37 and the second check valve 38 are attached has the same configuration as the return hot water passage pipe 31b.

Reference numeral 51 denotes a rubber packing provided on the flange 7 of the circulation port body 1, and reference numeral 52 denotes a rubber packing disposed between the holding cylinder 14 and the side surface 3 of the bathtub 2.

When this hot / cold water connection device is attached to the hole 4 formed in the side surface portion 3 of the bathtub 2, a rubber packing 51 is fitted to the flange portion 7 of the circulation port body 1, and this flange portion 7 is connected to the bathtub. The holding cylinder 1 in which the rubber packing 52 is fitted to the body 16 while being brought into contact with the hole 4 of the side part 3 from the outside 5 of the body 2
4 is inserted into the hole 4 from the inside of the bathtub 2 from the body 16 side,
The male screw 17 of the body 16 is replaced with the female screw 13 of the circulation port body 1.
And is connected so that the side portion 3 of the bathtub 2 is sandwiched between the circulation port body 1 and the holding cylinder 14.

After doing so, one of the hot and cold water passage pipes 31
The end 35 of (31a or 31b) is fitted to the cylinder 10a of the circulation port body 1 via the packing 12. Similarly, the other hot water passage pipe 31 (31b or 31a) is connected. In this case, the branch pipe portion 34 of each hot water passage pipe 31
Are connected to face downward. In addition, for the two cylindrical portions 10a formed in the closing portion 8 of the circulation port body 1,
Any one of the hot water passage pipes 31a and 31b may be fitted.

Next, each hot water passage pipe 31 (31b, 31a)
The notch 23 formed on the outer peripheral surface 22 of the annular body 19 is engaged with the branch pipe part 34 of the annular body 19, and the locking projection 20 of the annular body 19 is locked with the flange 15 of the holding cylinder 14. And the annular body 19 is connected to the holding cylinder 14.

Finally, the locking groove 19a at the other end of the annular body 19
Then, the projection 30 of the filter cap 24 is locked.
The opening of the annular body 19 inside the bathtub is covered with a filter cap 24.

The two connecting pipes 10b protruding outside the circulation port body 1 attached to the side surface 3 of the bathtub 2 in this way are connected to a forward connection pipe (not shown) connected to a hot water supply device (not shown). ) And a return connection pipe (not shown) as appropriate. Outgoing connection pipe (not shown) in any part of each cylindrical part 10b
Alternatively, a return connection pipe (not shown) may be connected.

Next, the hot water circulation connection device thus attached is connected to the hot and cold water flow in each hot water passage pipe 31 (31a, 31b), and the first check valve 37 and the second check valve 38, respectively.
The operation of will be described.

FIG. 5 shows the flow of hot water in the hot water passage pipe 31a on the outward path and the operation of the first check valve 37 and the second check valve 38. FIG. 6 shows the flow of hot water in the hot water passage pipe 31b on the return path. It is explanatory drawing which shows a flow and the effect | action of the 1st check valve 37 and the 2nd check valve 38. The flow path of hot water from the bathtub 2 to the hot water supply device (not shown) is defined as the outward route, and the flow channel of hot water from the hot water supply device (not shown) to the bathtub 2 is defined as the return route.

The flow of the hot water passage pipe 31a (see FIG. 5) on the outward path and the operation of the first check valve 37 and the second check valve 38 are as follows.
Circulation pump (not shown) provided in hot water supply device (not shown)
The hot and cold water in bathtub 2 is filtered by filter cap 2
4 through a filter 28 from each opening 27 of the horizontal pipe portion 3.
2 flows from the end 33. At this time, the valve body 41 of the first check valve 37 fitted to the horizontal pipe portion 32 is pushed by the water pressure of hot water to separate from the valve seat portion 44 to open the passage. On the other hand, the second check valve 38 fitted to the branch pipe part 34 pushes the valve body 47 toward the valve seat part 50 by hot and cold water into the branch pipe part 34 by the suction force of a circulation pump (not shown). Being closed the passage.

As described above, in the hot water passage pipe 31a on the outward path side, the hot water in the bathtub 2 is sucked from the front surface of the filter cap 24.

At the same time as the operation of the hot water passage pipe 31a on the outward path, the flow of the hot water pipe 31b on the return path, the first check valve 37 and the second check valve 38 are simultaneously supplied to the hot water supply device (see FIG. 6). Hot water is discharged from the horizontal pipe section 32 into the bathtub by the action of a circulation pump (not shown) provided in the not shown). In this case, the valve body 41 of the first check valve 37 comes into contact with the valve seat 44 to close the passage due to the water pressure of the hot water discharged from the horizontal pipe portion 32 into the bathtub. Therefore, hot water can be prevented from spouting from each opening 27 of the filter cap 24.

On the other hand, the valve body 47 of the second check valve 38 is separated from the valve seat 50 to open the passage by the pressure of the hot water discharged from the horizontal pipe portion 32 into the bathtub. Hot water is discharged into the bathtub 2 through the branch pipe portion 34.

[0034]

As described above, in the hot and cold water circulation connecting device of the present invention, the hot and cold water discharged from the hot water supply device into the bathtub by the action of the first check valve and the second check valve provided in the hot and cold water passage pipes. Since the water is discharged not from the filter cap attached to the front of the hot water circulation connector but from the branch pipe facing downward from the bathtub, the hot hot water discharged from the hot water passage pipe directly hits the bather's body. You can avoid and bathe comfortably.

Further, by the function of the second check valve, it is possible to prevent the scale and dust in the bathtub from flowing into the hot water supply device without attaching a filter to the outlet of the branch pipe portion. Therefore, it is not necessary to attach a filter to the outlet of the branch pipe portion of the hot and cold water passage pipes, and the manufacturing cost can be reduced.

Even if a pair of hot water passage pipes is connected to either of the two through holes formed in the circulation port body, the above-described effects can be obtained, and the hot water passage pipe can be easily attached. Can be.

Further, a hose is connected to a branch pipe portion of one of the hot and cold water passage pipes, the hose is led to a washing tub of a washing machine, and a circulation pump provided in a hot water supply device is operated, so that the remaining hot water in the bath tub is reduced. Hot water drawn from the other hot water supply pipe toward the hot water supply device and discharged from the hot water supply apparatus can be supplied to the washing tub from one hot water flow pipe via a hose. Therefore, the remaining hot water can be easily used for washing, and the hot water circulation connection device of the present invention is very convenient for efficiently performing washing using the remaining hot water.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a hot water circulation connection device according to the present invention.

FIG. 2 is a front view of a state where a filter cap according to the present invention is removed.

FIG. 3 is a front view of the hot and cold water circulation connection device according to the present invention.

FIG. 4 is a hot water passage pipe, a first check valve, and a second check valve according to the present invention.
It is explanatory drawing which shows a check valve.

FIG. 5 is an explanatory view showing an operation of one hot water passage pipe during use.

FIG. 6 is an explanatory view showing the operation of one hot water passage pipe during use.

FIG. 7 is an explanatory view showing a use state of a general hot water circulation connection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circulation port body 2 Bath tub 3 Side part 4 Hole 8 Closure part 9 Through-hole 14 Nipping cylinder 19 Annular body 22 Outer peripheral part of annular body 24 Filter cap 31 Hot water passage pipe 32 Horizontal pipe part 34 Branch pipe part 36 Discharge port ( One end of the branch pipe section) 37 First check valve 38 Second check valve

Claims (1)

[Claims] 1. A circulation port body attached to a hole formed in a side portion of a bathtub from the outside of a bathtub, a holding cylinder inserted into the hole from the bathtub and connected to the circulation port body, and a bathtub An annular body connected to the holding cylinder inside, a filter cap detachably attachable to the annular body, and a pair of hot and cold water passage pipes, the circulation port body has one end opened and the other end closed. A through-hole for connecting each of the hot and cold water passage pipes is formed in the closed portion at the other end, and each of the hot and cold water passage pipes forms a branch pipe near the tip of the horizontal pipe, and A first check valve is provided at the tip and a second check valve is provided at the branch pipe portion. The first check valve of each hot water passage pipe is opened inward of the horizontal pipe section and the second check valve is opened. The stop valve is configured to open in the direction of the discharge port of the branch pipe, and is provided on the side of the bathtub. The circulation port body and the holding cylinder are connected through the hole, the rear ends of the horizontal pipe portions of the respective hot and cold water passage pipes are respectively connected to the through holes of the circulation port body, and the holding body has an annular body and a filter. When the caps are sequentially attached, the branch pipe portion of each hot water passage pipe is configured to protrude into the bathtub from the outer periphery of the annular body, and the second reverse of one hot water passage pipe is formed by the water pressure circulating during use. When the stop valve closes, the first check valve opens to allow hot water in the bathtub to flow into the horizontal pipe portion through the filter cap, and at the same time, the first check valve of the other hot water passage pipe closes and the second check valve closes. A hot water circulation connection device wherein a stop valve is opened to discharge hot water in a horizontal pipe portion from a branch pipe portion into a bathtub.