JP2001133048A - Bathtub coupling device for forced circulation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathtub coupling device for forced circulation decreased in disorder due to resistance of a flow passage. SOLUTION: This bathtub coupling device consists of an outer fit-in member 20, an inner fit-in member 21, a partition member 22, and a filter member 23. Two introduction valves 15 and 17 and two discharge valves 16 and 18 are incorporated in the partition member 22. Water entering through both of two connection parts is guided to discharge ports 6 and 7 and water entering through a suction port 5 is sucked through both of the two connection parts. A partition member 22 is partitioned into a partition containing a valve mounting part 51 and an opening 58 and a partition containing a valve mounting part 50 and an opening 59. A tubular part 38 of a bottom plate is opened in the former partition and a space in the partition communicates with an external part through the tubular part 38. The latter partition communicates with an external part through the opening of the bottom plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced-circulation bathtub connecting device which connects a forced circulation heat source unit and a bathtub and functions as a discharge port and a suction port for circulating hot water.

[0002]

BACKGROUND ART forced circulation of the bath can be installed with the temperature of the surface side of the hot water in the bathtub, and features that are less difference in temperature of the bottom, the tub and away heat exchanger It has the advantage and is widely used instead of the traditional convection type. The structure of the forced circulation bathtub is, for example, as shown in FIG. 42, and has a forced circulation heat source device 201 provided with a pump 200.
The forced circulation heat source device 201 and the bathtub 202 are connected by an outgoing pipe 203, a return pipe 205, and a forced circulation bathtub connecting device 206.

[0003] That is, a bathtub connecting device 206 for forced circulation is attached to the side surface of the bathtub 202, and the front end of the bathtub connecting device 206 is attached to the bathtub
02, and the rear end side is exposed outside the bathtub 202. The bathtub connection device 206 for forced circulation has two connection ports on the rear end side exposed to the outside. Further, the forced circulation bathtub connection device 206 has a discharge port and a suction port on the tip side disposed in the bathtub 202. The outgoing pipe 203 of the forced circulation heat source device 201 is connected to one of the connection ports, and the return pipe 205 is connected to the other connection port. Bathtub 202
The hot water inside is sucked in from the suction port of the forced circulation bathtub connection device 206, enters the return pipe 205, is heated and flows through the outflow pipe 203, passes through the connection port, passes through the discharge port of the forced circulation bathtub connection device 206, and becomes a bathtub. Returned to 202.

FIG. 43 is a front view and a bottom view of a prior art forced circulation bathtub connecting apparatus, and FIG. 44 is a sectional view of a forced circulation bathtub connecting apparatus according to the prior art. 43 and 44. Forcible circulation bathtub connecting device 20 shown in FIGS.
Numeral 6 denotes a non-polar coupling device, which goes through two connecting portions 215 and 216 to go to the pipe 203 or the return pipe 20.
5 can be used, and the hot water in the bathtub 202 can be sufficiently stirred. The prior art forced circulation bathtub connecting device 206 will be briefly described as follows.

[0005] That is, when the bathtub connecting device 206 for forced circulation is externally viewed, the tip side 210 disposed in the bathtub is shown in FIG.
And has two openings 211,2 on the side.
It has 12. Two connecting portions 215 and 216 are provided on the rear end side 213 disposed outside the bathtub. The components of the forced circulation bathtub connection device 206 are an outer fitting member 220, an inner fitting member 221, a partition member 222, and a filter member 223. Inside, two flow paths are formed, and the connection part 215 communicates with the opening 212, and the connection part 216 communicates with the opening 211.
Filters are provided in both the openings 211 and 212.

The prior art forced circulation bathtub coupling 206
Then, one of the outgoing pipe 203 and the return pipe 205 is connected to the connection part 215, and the other is connected to the connection part 216. For example, assuming that the outgoing pipe 203 is connected to the connection 215 and the return pipe 205 is connected to the connection 216, the opening 211 functions as a suction port,
The opening 212 functions as a discharge port. That is, the bathtub 20
2 is sucked from the opening 211 and the connection portion 216
And then into the return pipe 205, from the outgoing pipe 203 to the connection part 215, and discharged from the opening 212 into the bathtub 202.

Conversely, assuming that the outgoing pipe 203 is connected to the connection 216 and the return pipe 205 is connected to the connection 215, the opening 212 functions as a suction port and the opening 211 functions as a discharge port. The hot water in the bathtub 202 is sucked from the opening 212, enters the return pipe 205 via the connection 215, and enters the connection pipe 21 from the outgoing pipe 203.
6 is discharged into the bathtub 202 from the opening 211.

[0008]

In the prior art forced circulation bathtub connecting device 206, one opening may function as a suction port or may function as a discharge port. Therefore, in the prior art forced circulation bathtub connection device 206, filters are provided in both the openings 211 and 212 so that dust and the like contained in the bathtub 202 can be removed regardless of which opening serves as a suction port. I was

Therefore, in the prior art forced circulation bathtub connecting device 206, dust or the like passing through the suction port may stop at the discharge port, and it is necessary to periodically clean not only the suction port but also the filter on the discharge port side. was there. However, since the discharge port discharges hot water from the inside to the outside of the bathtub connection device 206 for forced circulation, the filter is clogged from the inside. Therefore, in order to clean the filter at the discharge port, the filter member itself must be removed. On the other hand, the filter member
The filter member must be securely attached to the partition member 22, and removal of the filter member is not always easy for a user. Further, as described above, since the filter at the discharge port is clogged from the inside, the clogged state is difficult to be seen from the outside, and there is a problem that even if clogged, it is difficult to notice. Therefore, the filter at the discharge port is often left without being cleaned, and the flow path resistance increases due to clogging, which often causes malfunction. Further, as described above, clogging of the filter at the discharge port is difficult to notice, and the malfunction due to the increase in the flow path resistance is often unknown to the user.

[0010] Further, the prior art forced circulation bathtub connecting device 2
06, even if there is no clogging of the filter,
There is a disadvantage that the flow path resistance is high. In other words, in the prior art forced circulation bathtub connection device 206, one opening may function as a discharge port, or may function as a suction port. Here, one of the important functions of the forced circulation bathtub connection device 206 has an action of stirring the inside of the bathtub 202 by vigorously discharging hot water. In order to achieve this function efficiently, it is desirable that the opening area of the discharge port be small. Therefore, the prior art forced circulation bathtub connection device 206
Then, the size of the opening is limited and cannot be made too large. As a result, the opening area on the side functioning as the suction port becomes too small, and the overall flow path resistance becomes high. In addition, the forced circulation bathtub connecting device 20
Numeral 6 is a projection in the bathtub and is an obstacle, so that it is desirable that the overall shape be as small as possible. Therefore, the internal flow path becomes complicated, which is one of the causes for increasing the flow path resistance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a bathtub connecting device for forced circulation in which malfunctions due to channel resistance are small.

[0012]

According to a first aspect of the present invention, there is provided a forced circulation type heat source unit comprising two connection portions connected to an outgoing pipe or a return pipe, and a bathtub. In the forced circulation bathtub connection device having a discharge port for discharging hot water and a suction port for sucking hot water in the bathtub, and a partition member connecting the connection portion and the discharge port and the suction port, the partition member is a bottom plate. Having a main body, the bottom plate has a flange portion, a tubular portion protruding from the flange portion,
An opening is provided in the flange portion, and in a state where the main body and the bottom plate are combined, the inside of the partition member is partitioned into two spaces by a flow path forming wall, and one partition has:
A forced circulation characterized in that the tubular portion of the bottom plate is open, the space in this partition communicates with the outside through the tubular portion, and the other partition communicates with the outside through the opening in the bottom plate. It is a bathtub connecting device.

According to a second aspect of the present invention, when the main body and the bottom plate are combined, the partition inside the partition member includes a valve mounting portion and an opening, respectively, and the valve mounting portion includes the partition member. An introduction valve is provided for allowing water flow into the inside and preventing reverse flow, and the opening is provided with a discharge valve for allowing water flow flowing from inside the partition member to the outside and preventing reverse flow. 2. The forced circulation bathtub connection device according to 1.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below. 1 shows a bathtub connection device for forced circulation in an embodiment of the present invention, (a) is a front view,
(B) is a bottom view. FIG. 2 is a circuit diagram of a combination of valves built into the bathtub connection device for forced circulation in FIG. FIG. 3 is a sectional view of the forced circulation bathtub connection device of FIG. 1.
FIG. 4 is an exploded perspective view of the forced circulation bathtub connection device of FIG. 1. FIG. 5 is a perspective view of the inner fitting member of the forced circulation bathtub connection device of FIG. 1. 6 shows a main body of a partition member of the forced circulation bathtub connection device of FIG. 1, (a) is a front view,
(B) is a side sectional view, (c) is a rear view, (d) is a perspective view of an opening, (e) is a detailed sectional view of the opening, and (f) is a view in the direction of arrow B. FIG. 7A is a cross-sectional view of an introduction valve of the bathtub connection device for forced circulation of FIG. 1, and FIG.
FIG. 3 is a cross-sectional view showing a procedure for mounting an introduction valve, and FIG.
FIG. 7 is a cross-sectional view illustrating a procedure for attaching an introduction valve according to another embodiment. FIG. 8 is a perspective view of the introduction valve of FIG.
(A) shows a state seen from above, and (b) shows a state seen from below. 9 (a) and 9 (b) are explanatory diagrams showing the state of attachment of the introduction valve of FIG. 10A and 10B show a discharge valve of the bathtub connection device for forced circulation in FIG. 1, wherein FIG. 10A is a front view and FIG. 10B is a side view. FIG. 11 is a perspective view of a discharge valve of the bathtub connection device for forced circulation in FIG. 1. FIG. 12 is an enlarged cross-sectional view showing the state of attachment of the discharge valve of FIG. FIG.
(A) is a front view, (b) is a plan view, (c) is a bottom view, and (d) is a rear view. FIG. 14 is an explanatory diagram illustrating an assembled state of the forced circulation bathtub connection device of FIG. 1. FIG. 15 is a plan view illustrating the positional relationship of small holes for air release of the bathtub connection device for forced circulation in FIG. 1. FIG.
FIG. 2 is a perspective view of the forced circulation bathtub connection device for explaining the air bleeding operation of the forced circulation bathtub connection device of FIG. 1. 17A and 17B are diagrams illustrating an assembled state of the bathtub connection device for forced circulation in FIG. 1, wherein FIG. 17A is a perspective view of a partition member, and FIG. 17B is a cross-sectional view illustrating an assembly relationship between the partition member and the filter member. FIG. FIG. 18 is an explanatory view schematically illustrating the inside and inside of the forced circulation bathtub connection device of FIG. 1. FIG. 19 is a perspective view schematically illustrating the flow of hot water in the partition member of the bathtub connection device for forced circulation. FIG. 20 is an explanatory diagram schematically illustrating the inside and inside of the forced circulation bathtub connection device of FIG. 1. FIG. 21 is a perspective view schematically illustrating the flow of hot water in the partition member of the bathtub connection device for forced circulation.
FIG. 22 is a front view of the filter member schematically illustrating the flow of hot water around the suction port of the bathtub connection device for forced circulation. FIG. 23 is a cross-sectional view of the filter member and the partition member schematically illustrating the vicinity of the suction port of the bathtub connection device for forced circulation and the flow of hot water in the partition member. FIG.
FIG. 8 is a front view of a filter member of a bathtub connection device for forced circulation of a modified embodiment. FIG. 25 is a front sectional view of a main part showing the behavior of a discharge valve when hot water is discharged from the discharge port of the bathtub connection device for forced circulation of FIG. 1, and FIG.
It is -A sectional drawing. FIGS. 26A and 26A are front sectional views (a) and (a) of main parts showing behavior of a discharge valve when hot water is discharged from a discharge port of a forced circulation bathtub connection device of a modified embodiment.
It is AA sectional drawing of.

In each of the figures, reference numeral 1 denotes a bathtub connecting device for forced circulation according to an embodiment of the present invention. The appearance shape of the forced circulation bathtub connection device 1 of the present embodiment is roughly divided into a front end side 2 disposed inside the bathtub and a rear end side 3 disposed outside the bathtub. The portion on the tip side 2 has a disk shape as shown in FIG. 1, and the portion on the front side functions as a suction port 5. In addition, two openings 6 and 7 functioning as discharge ports are provided on the bottom surface of the distal end side 2. Connection parts 10, 11
In the present embodiment, a metal pipe protrudes, and a pipe end of a brazed joint or one of known union joints 12 is attached to a tip of the metal pipe.

The bathtub connection device 1 for forced circulation according to the present embodiment includes two introduction valves 15 and 17 and two discharge valves 16 and 18 therein. Inlet valve and discharge valve 1
The combination of 5, 16, 17, and 18 is as shown in FIG. 2, and hot water entering from any of the connection portions 10 and 11 can be conducted to the discharge port 6 or 7 by the discharge valve 16 or 18. Hot water entering from any of the parts 10 and 11 is prevented from flowing into the suction port 5 by the introduction valves 15 and 17. Hot water that has entered through the suction port 5 is supplied to the inlet valve 1
The hot water from the discharge port is blocked by the discharge valves 16, 18, and does not flow into either of the connection portions 10, 11.

Next, the specific structure of the bathtub connection device 1 for forced circulation will be described. The bathtub connection device 1 for forced circulation includes an outer fitting member 20, an inner fitting member 21, a partition member 22, and a filter member 23, as shown in FIGS. In the drawing, reference numerals 46 and 49 denote packings provided to prevent water leakage from the bathtub.

The outer fitting member 20 is made of a copper alloy, a casting,
It is made of a metal that is resistant to rust, such as stainless steel, and has a bottomed main body 25, and a flange 26 is formed at the open end of the main body 25.
A female screw is provided on the inner periphery of the main body 25 (not shown). From the bottom of the main body 25, the connecting portions 10,
11 protrudes. One of the connecting portions 10 and 11 is located at the center of the main body 25 and is connected to the main body 25.
Is connected to a tube 27 provided at the center of the inside of the tube. The other connecting portion 10 is provided at a portion beside the bottom portion, and opens inside the main body portion 25.

The inner fitting member 21 is made of resin,
As shown in FIGS. 4 and 5, the flange portion 28 and the male screw portion 29 are continuous, and a through hole 30 is provided at the center. Also, the surface side of the flange portion 28, that is, the external thread portion 2
In the part located on the opposite side of 9 are eight cylindrical projections 32
Are provided evenly. The cylindrical projection 32 has
In each case, a female screw 33 is formed.

The partition member 22 is, as shown in FIG.
5, a main body 36, a packing 37, introduction valves 15, 17 and discharge valves 16, 18. Explaining one by one, the bottom plate 35 is made of resin, and the tubular portion 38 and the flange portion 40 are integrally provided. That is, the tubular portion 38 protrudes from the center of the flange portion 40 to one side, and penetrates the front and back surfaces of the flange portion 40. The flange portion 40 has a thick portion 41 around the periphery.
Are provided, and the thickness of the other portions is relatively thin. Eight concave portions 43 are arranged at equal intervals in the thin portion of the meat. The concave portion 43 is concave when viewed from the direction in which the tubular portion 38 is provided. Of the recesses 43, three of the recesses 43 have a through hole in the center, and the other recesses 43 are not penetrated. The arrangement of the penetrating concave portion 43 and the non-penetrating concave portion 43 is such that there are two non-penetrating concave portions 43 on both sides of a specific penetrating concave portion 43, and further there is a penetrating concave portion 43 next to the specific non-penetrating concave portion 43. . Therefore, the arrangement of the through recesses 43 is not uniform. Further, a through hole 45 is provided near the tubular portion 38 of the flange portion 40 as shown in FIG. In addition, the bottom plate 35 is provided with protrusions 90 and 91 (see FIG. 9) at portions corresponding to valve attachment portions 50 and 51 described later.

The main body 36 of the partition member 22 is a disk-shaped member having an overall concave shape as shown in FIGS. The main body 36 is provided with a partition wall 47 on one side and has a bottom, and the other is open. In other words, the main body 36
It has a circular partition wall 47, and a peripheral wall 48 is provided around the partition wall 47.

Two valve mounting portions 50 and 51 are provided at the partition wall 47. The valve mounting portion 51 is located at the center of the partition wall 47, and the other valve mounting portion 50 is provided at a position slightly off center. The valve mounting portions 50 and 51 have a shape in which a shaft insertion hole 53 is provided at the center and six openings 55 are radially arranged around the shaft insertion hole 53. In addition, the partition wall 47 is provided with three holes 56 and two holes 57. Among them, the former hole 56 is a hole for integrally connecting the main body 36 to the bottom plate 35 and the inner fitting member 21, and the interval between the holes 56 is the interval between the through recesses 43 of the bottom plate 35. be equivalent to.

Turning now to the peripheral wall 48 of the main body 36, the peripheral wall 48 is provided with two openings 58, 59. The openings 58 and 59 are provided at positions about 90 ° apart. The reason why the openings 58 and 59 are arranged at a position of 90 ° instead of 180 ° is that the openings 58 and 59
59 is directly connected to the discharge ports 6 and 7, and since the discharge ports 6 and 7 are desirably located on the lower side of the bathtub, both the openings 58 and 59 are disposed downward. Note that the angle of 90 ° between the openings 58 and 59 described above may be changed as appropriate, and the openings 58 and 59 may be arranged so as to face directly below.

The openings 58, 59 have the same shape, and the portions of the openings 58, 59 are formed thicker than the other portions, and are viewed from the peripheral surface as shown in FIG. It is in a recessed state, and an opening is formed in the innermost part.
A rib 64 is provided around the openings 58 and 59 as shown in FIGS. The function of the rib 64 is to bring the discharge valves 16 and 18 into linear contact with the rib 64 serving as a valve seat, thereby preventing the discharge valves 16 and 18 from sticking. In the present embodiment, a cutout portion 69 is provided in a part of the rib 64. The notch 69 is provided so that when the water in the bathtub is drained, the water remaining in the partition member 22 can be drained, and the main purpose is to prevent freezing in winter.

The openings 58, 59 have axial bars 60, respectively.
Is provided. The crossbar 60 is provided so that a movable portion 81 of the discharge valves 16 and 18 described later does not enter the inside, and is not limited to a vertical crossbar as in the present embodiment, but may be a horizontal crossbar or a net shape. May be. However, it is not preferable that the size is such that dust is clogged. Two holes 62 are provided on the surface of the partition wall 47 at the openings 58 and 59, respectively. In the present embodiment, the hole 62 has a counterbore shape, and the cross-sectional shape of the hole 62 is as shown in FIG.
The seat 54 is provided as shown in FIG.

A small hole 105 for venting air is provided at a position near the open side of the peripheral wall 48 and at a position equiangular with both the openings 58 and 59. In addition, the peripheral wall 48 is provided with three cut grooves 106 for positioning and attaching the filter member.

A flow path is formed between the one opening 58 and the central portion of the partition wall 47 on the inner side of the partition wall 47, more specifically, on the side of the peripheral wall 48 in the standing direction. A wall 63 is provided. That is, the flow path forming wall 63
Surrounds one periphery of the valve mounting portion 51 and further extends toward the peripheral wall 48 including the opening 58, and divides a region including the valve mounting portion 51 and the opening 58 from another region.

The packing 37 is made of rubber, and has a shape corresponding to the end of the peripheral wall 48 of the main body 36 and the end of the flow path forming wall 63.

The introduction valves 15, 17 are made of rubber and have an umbrella shape as shown in FIGS.
That is, the introduction valves 15 and 17 include the disk-shaped portion 68 and the shaft portion 70. The disk-shaped portion 68 is a flexible sheet-shaped material, has a slightly open shape on the shaft side, and has ribs 71 provided therearound. The shaft 70
In the figure, the base portion 72 of the disc-shaped portion 68 is thick, and the mounting portion 73 at the tip thereof is slightly thin. Further, the engaging portion 7 at the tip of the mounting portion 73
5 is made thicker than the mounting part 73. Further, the introduction portion 76 further ahead of the engagement portion 75 is made thinner than any other portion. The introduction portion 76 is cut off as necessary after the introduction valves 15 and 17 are mounted as described later.

On the other hand, the discharge valves 16 and 18 are shown in FIGS.
It is a swing type like. That is, the discharge valve 16,
Reference numeral 18 is made of a flexible material such as rubber, and has an inverted "L" shape as a whole. More specifically, a plate-shaped movable portion 81 is provided vertically on a plate-shaped pedestal portion 80. The pedestal portion 80 has an arc surface conforming to the arc shape of the partition member 22 described above. Further, two shaft portions 85 are provided on the back surface of the pedestal portion 80. The shape of the shaft portion 85 is the same as that of the introduction valve 1 described above.
The mounting portion 86 is slightly the same as that of the mounting portion 86 and the thick engaging portion 87 provided at the tip of the mounting portion 86.
And a thin leading portion 88 at the tip.
On the other hand, the movable portion 81 is made thinner than the pedestal portion 80 described above, and has a circular arc shape on the distal end side that substantially matches the circular arc shape of the partition member 22. And the back side of the tip,
That is, the reinforcing rib 83 is provided on the side that does not exhibit the sealing function. The base portion 82 of the pedestal portion 80 and the base portion 82 of the movable portion 81 are formed in a round shape.
1 is designed to be easily deformed in the direction of the arrow.

The assembling structure of the partition member 22 is as shown in FIG.
Are mounted, the introduction valves 15 and 17 are mounted on the valve mounting portions 50 and 51 of the main body 36, and the discharge valve 1 is mounted on the openings 58 and 59.
6 and 18 are attached. In a state where the main body 36, the packing 37, and the bottom plate 35 are combined, the inside of the partition member 22 is partitioned into two spaces by the flow path forming wall 63. More specifically, the partition member 22
Is partitioned into a partition including the valve mounting portion 51 and the opening 58, and a partition including the valve mounting portion 50 and the opening 59. And the former valve mounting part 51 and the opening 5
The tubular portion 38 of the bottom plate 35 is opened in the partition including 8, and the space in the partition communicates with the outside via the tubular portion 38. On the other hand, the latter partition including the valve mounting portion 50 and the opening 59 communicates with the outside through the opening 45 of the bottom plate 35.

The introduction valves 15 and 17 are arranged inside the partition member 22, and from outside the partition wall 47.
To allow water flow in the direction, and vice versa. Mounting structure for introducing valve 15 and 17 is a like Figure 7, the shaft insertion hole 53 in the center of the valve mounting portion 50 and 51, inlet valve 1
The insertion portions 76 of the shaft portions 70 of the fifth and 17 are inserted, and the attachment portions 73 are inserted into the shaft insertion holes 53 by strongly pulling them. As a result, the engagement portion 75 is locked in the shaft insertion hole 53, and the introduction valve 15,
17 is fixed to the valve mounting portions 50 and 51. Inside the partition member 22, the projections 90 and 91 of the bottom plate 35 are in contact with the rear surface of the shaft 70. The introduction portions 76 of the introduction valves 15 and 17 are cut off after the introduction valves 15 and 17 are attached.

As to the method of inserting the introduction valves 15 and 17, the introduction valves 15 and 17 are, as described above, the same as those shown in FIG.
The shaft insertion hole 53 at the center of the valve mounting portions 50 and 51 as shown in FIG.
Then, the introduction portion 76 is inserted, and the mounting portion 73 is inserted through the shaft insertion hole 53 by pulling up strongly with a finger or the like. Then, as shown in FIG.
Disconnect. When cutting the introduction portion 76, care should be taken not to cut the engagement portion 75 by mistake. If there is a particular concern that the engaging portion 75 may be cut off by mistake, a peripheral wall 74 is provided around the shaft insertion hole 53 as shown in FIG. Part 75
However, it is desirable to have a structure that fits perfectly. With the configuration in which the engaging portion 75 fits inside the peripheral wall 74 in this manner, the blade is prevented from coming into contact with the engaging portion 75 when the introduction portion 76 is cut, so that the engaging portion 75 is erroneously engaged. The joint 75 is not cut off.

The operation of the introduction valves 15 and 17 will be described. When the introduction valves 15 and 17 receive pressure from the outside of the partition wall 47, the disk-shaped portion 68 is turned up as shown in FIG. The introduction of hot water into the partition member 22 from outside is permitted. On the other hand, when the pressure of the partition member 22 is higher than that of the outside, the disc-shaped portion 68 is in close contact with the opening 55 to prevent the hot water in the partition member 22 from leaking to the outside. In the present embodiment, the protrusion 9
The reason why 0, 91 is brought into contact with the back surface of the shaft 70 is that the shaft 7
In order to prevent an excessive load from being applied to the shaft 0 and prevent the shaft portion 70 from being stretched and the sealing performance from deteriorating. Even if there is no configuration, there is no problem in the function as the valve.

The discharge valves 16, 18 are attached to the openings 58, 59 so as to allow the water flow from the inside of the partition member 22 to the outside and to prevent the reverse flow.
Are arranged outside the openings 58 and 59. Discharge valve 1
The mounting structure of 6, 6 and 18 is specifically as shown in FIG. 12, and in substantially the same manner as the introduction valves 15 and 17, the valve openings 58 and
The insertion portion 88 of the shaft portion 85 is inserted through the hole 62 of the hole 59, and the attachment portion 86 is inserted into the hole 62 by strongly pulling the insertion portion 88.
In the hole 62. In the present embodiment, the locking portions 87 of the discharge valves 16 and 18 are connected to the seat 5 of the hole 62.
Fits in 4. The introduction part 88 of the discharge valves 16 and 18 is the discharge valve 1
It is cut after attaching 6,18. At the time of cutting, the seat portion 54 performs the same function as the peripheral wall 74 described with reference to FIG. 7D, and prevents the blade from directly touching the locking portion 87.

The filter member 23 includes an exterior member 95, an interior member 96, and a filter 97. Since the exterior member 95 and the interior member 96 of the filter member 23 have similar shapes, the exterior member 95 will be described as a representative.
The exterior member 95 is made of a metal that is resistant to rust, such as stainless steel, and has a bowl shape, one of which has a bottom and the other is open. An opening 98 serving as the suction port 5 is provided on the bottomed side, that is, on a portion which becomes a front surface with the filter member 23 attached. The shape of the suction port 5 is unique to the present invention.
That is, as shown in FIG.
Then, the fan-shaped part 101 of about 60 ° is masked and closed. The masked central portion 100 and the fan-shaped portion 101 correspond to the valve mounting portion 5 of the partition member 22 described above.
It corresponds to the position facing 0,51.

On the side of the exterior member 95, the discharge ports 6,
7 are provided. The positions of the openings correspond to the positions of the openings 58 and 59 of the partition member 22 described above. Further, a small hole 110 for venting air is provided at a side surface of the exterior member 95 and at a position equiangular with the above-described discharge ports 6 and 7. Further, the small holes 110 are arranged in the height direction as shown in FIG.
As shown in (b), it is provided at the upper portion (at the position near the front when attached to the bathtub). The position of the small hole 110 is close to the position of the small hole 105 of the partition member 22 described above, but does not coincide with the angle in the circumferential direction or the height direction of the exterior member 95. In addition, three protrusions 112 for positioning and locking are provided on the inner surface of the exterior member 95.

The filter member 23 has a circular filter 97 sandwiched between the exterior member 95 and the interior member 96 described above. Therefore, the opening 98 at the front of the filter member 23, that is, the opening 9 functioning as the suction port 5
8 is provided with a filter 97. On the other hand, there is no filter in the discharge ports 6 and 7 on the side surface of the filter member 23.

Next, an assembling structure of the forced circulation bathtub connecting apparatus 1 of the present embodiment will be described. In the forced circulation bathtub connection device 1 of the present embodiment, the partitioning of the partitioning member 22 is performed.
The filter member 23 is mounted on the wall 47 side. The mounting of the filter member 23 is performed by
To the cut groove 106 of the partition member 22 and
It is performed by fitting both. In a state where the filter member 23 is mounted on the partition member 22, the mask position of the central portion 100 and the mask position of the fan-shaped portion 101 coincide with the portions of the partition member 22 facing the valve mounting portions 50 and 51. The discharge ports 6 and 7 of the filter member 23 coincide with the positions of the openings 58 and 59 of the partition member 22. However, in the present embodiment, as shown in FIG.
5 and 110 are near the back surface on the partition member 22 side and near the front surface on the filter member 23 side, and therefore do not match (see FIG. 14).

When the filter member 23 is mounted on the partition member 22, the corner 115 on the front side of the partition member 22 and the corner 116 on the inner surface of the filter member 23 are in close contact with each other, with the contact line between the two being bounded. The flow of hot water between the front side and the side is shut off (see FIG. 17b). Further, a space 120 serving as a suction chamber is formed between the filter member 23 and the partition plate 47 of the partition member 22 (see FIG. 17B).

On the rear end side of the partition member 22, an inner fitting member 21 is mounted. The inner fitting member 21 is positioned such that the projections 32 on the surface thereof are fitted into the concave portions 43 of the bottom plate 35 of the partition member 22 so that the openings 58 and 59, that is, the discharge ports 6 and 7 face downward. The partition member 22 and the inner fitting member 21 are connected by inserting screws (not shown) into three through holes of the concave portion 43 and fitting the screws into screw holes provided in the projections 32 of the inner fitting member 21. Perform it together. In addition, the actual attachment, the inner fitting member 21 is first attached to the bathtub,
Thereafter, the partition member 22 and the like are attached. When the partition member 22 is attached, the partition member 2 is positioned so that the small holes 110 for air release are positioned upward.
The combination of the second concave portion 43 and the projection 32 of the inner fitting member 21 is selected.

The outer fitting member 2 is provided outside the inner fitting member 21.
0 is attached. The connection between the two is made by the inner fitting member 2
This is performed by fitting the first screw 29 and the female screw (not shown) of the outer fitting member 20. Tube 27 of outer fitting member 20
Enters the tubular portion 38 of the partition member 22 as shown in FIG.
A space 121 is formed by the bottom surface of the outer fitting member 20, the outer periphery of the tubular portion 38 of the partition member 22, and the inner surface of the inner fitting member 21.

As a result, two independent flow paths A and B are formed in the bathtub connection device 1 for forced circulation. FIG.
FIG. 20 is a cross-sectional view in which a part of the drawing of FIG. 3 is omitted in order to clarify the flow path. 19 and 21 are perspective views of the forced circulation bathtub connection device 1 in a state where the filter member is removed in order to clarify the flow path. One of the flow paths A is a flow path formed by the central portion of the bathtub connection device 1 for forced circulation and the flow path forming wall 63 of the partition member 22. That is, the channel A is connected to the connecting member 1.
1 to the tubular portion 38 of the partition member 22, and further from the tubular portion 38 to the center of the main body 36 of the partition member, and to the opening 58 and the discharge port 6 through the flow path surrounded by the flow path forming wall 63. These are communication channels. In the flow path A, the space 1 is located between the space 120 serving as a suction chamber.
An introduction valve 17 that allows only the flow from 20 to the flow path A is attached. In the flow path A, a discharge valve 18 that allows only the flow from the flow path A to the discharge port 6 between the discharge port 6 and the discharge port 6.
Is attached.

On the other hand, the passage B is provided with a bathtub connecting device 1 for forced circulation.
Is a flow path formed in the peripheral portion of. That is, the channel B is
From the connection member 10, the space 1 formed by the outer periphery of the tubular portion 38 of the partition member 22 and the inner surface of the inner fitting member 21
21 is connected to the main body 36 of the partition member (a part other than the flow path surrounded by the flow path forming wall 63) through an opening 45 provided in the bottom plate 35 of the partition member 22, and further the opening 59 and the discharge port 7 are provided. This is a flow path communicating with. In the flow path B, an introduction valve 15 that allows only the flow in the direction of the flow path B from the space 120 is mounted between the space 120 and the suction chamber. Further, a discharge valve 16 that allows only the flow from the flow path B to the discharge port 7 is attached to the flow path B between the discharge port 7 and the discharge port 7.

Next, the operation of the forced circulation bathtub connecting apparatus 1 of the present embodiment will be described. In the forced circulation bathtub connection device 1 of the present embodiment, hot water is supplied to the connection member 10 or 11 regardless of whether the outgoing pipe 203 or the return pipe 205 is connected thereto.
It is sucked through the suction port 5 on the front and the discharge port 6 on the side.
Or it is discharged from 7.

First, the case where the outgoing pipe 203 is connected to the connecting member 11 and the return pipe 205 is connected to the connecting member 10 will be described with reference to FIGS. FIG. 18, 1
In FIG. 9, the flow of hot water when the outgoing pipe 203 is connected to the connection member 11 and the return pipe 205 is connected to the connection member 10 is indicated by arrows. That is, in this case, the connection member 1
The hot water supplied from 1 flows through the flow path A and is discharged from the discharge port 6 into the bathtub, and the hot water in the bathtub flows from the suction port 5 through the flow path B to the return pipe 205. More specifically,
The hot water supplied from the connecting member 11 flows into the pipe 38 of the partition member 22 and further flows from the pipe 38 to the center of the main body 36 of the partition member. Here, when the outgoing pipe 203 is connected to the connection member 11, the pressure on the partition member 22 side is higher than the space 120 serving as the suction chamber. Therefore, the introduction valve 17 is closed as shown in FIG. Therefore, the hot water flows through the flow path surrounded by the flow path forming wall 63. That is, as shown in FIGS. 18 and 19, the hot water changes the flow direction along the flow path A and heads toward the opening 58 of the partition member 22. Then, the discharge valve 18 is pushed and spread, and the hot water flows from the discharge port 6 into the bathtub.

On the other hand, since the connecting member 10 is connected to the return pipe 205, the pressure in the flow path B decreases. as a result,
The discharge valve 16 closes and the introduction valve 15 opens. The hot water that has entered through the suction port 5 flows from the introduction valve 15 into the main body 36 of the partition member (a part other than the flow path surrounded by the flow path forming wall 63), and further flows through the opening 45 into the tubular portion 38 of the partition member 22. It flows into the space 121 formed by the outer periphery and the inner surface of the inner fitting member 21, and finally flows into the connecting member 10.

In the forced circulation bathtub connecting apparatus 1 of the present embodiment, the distal end side of the discharge valve 18 has an arc shape substantially matching the arc shape of the partition member 22, so that the discharge port 6 is formed.
The opening degree of the discharge valve 18 when hot water is discharged from is wide. That is, generally, in a swing-type valve, a rectangular shape is often adopted as a shape of a deformed portion serving as the movable portion 81 as shown in FIG. However, as in the present embodiment, the overall shape is a disk shape, and the discharge valve 1 is located at the outermost position.
26, when the discharge valve 16 is opened as shown in FIG. 26, if the corner of the movable portion 81 of the discharge valve 16 is rectangular, it comes into contact with the inside of the filter member 23,
The opening is limited. In contrast, in the present embodiment, FIG.
5, the distal end side of the movable portion 81 has an arc shape substantially matching the arc shape of the partition member 22, so that the discharge valve 1
The corner portion 6 does not come into contact with the inside of the filter member 23. An embodiment in which the shape of the movable portion 81 is an arc as in the present embodiment is to be recommended as an embodiment of the present invention. However, the present invention is not limited to this embodiment, and the movable portion 81 may be movable as shown in FIG. A general rectangle may be adopted as the shape of the portion.

Continuing the description of the flow of hot water in the forced circulation bathtub connection device 1 of this embodiment, conversely, when the outgoing pipe 203 is connected to the connecting member 10 and the return pipe 205 is connected to the connecting member 11, The hot water circulates along the completely opposite flow path. In FIGS. 19 and 20, the pipe 2
03 is connected, and the flow of hot water when the return pipe 205 is connected to the connection member 11 is indicated by arrows. That is, in this case, the hot water supplied from the connection member 10 flows through the flow path B and is discharged from the discharge port 7 into the bathtub, and the hot water in the bathtub flows from the suction port 5 through the flow path A to the return pipe 205. Flows to More specifically, the hot water supplied from the connecting member 10 flows into a space 121 formed by the outer periphery of the tubular portion 38 of the partition member 22 and the inner surface of the inner fitting member 21, and further flows to the bottom plate 35 of the partition member 22. It flows into the main body 36 of the partition member (a part other than the flow path surrounded by the flow path forming wall 63) from the provided opening 45. Here, when the outgoing pipe 203 is connected to the connection member 10, the pressure on the partition member 22 side is higher than the space 120 serving as the suction chamber. Therefore, the introduction valve 15 is closed as shown in FIG. 20, the discharge valve 16 is opened, and hot water is discharged from the discharge port 7 into the bathtub.

On the other hand, since the connecting member 11 is connected to the return pipe 205, the pressure in the flow path A decreases. as a result,
The discharge valve 18 closes and the introduction valve 17 opens. Then, the hot water that has entered through the suction port 5 flows from the introduction valve 17 into the main body 36 of the partition member (the flow path surrounded by the flow path forming wall 63), and returns to the connection member 11 via the tubular portion 38.

That is, in the bathtub connection device 1 for forced circulation of the present embodiment, the pipe 2
03 or the return pipe 205 is connected, hot water is sucked in from the suction port 5 on the front and the discharge port 6 or 7 on the side surface.
Is discharged from. Then, in the bathtub connection device 1 for forced circulation of the present embodiment, the filter 9
There is no filter at the outlet 6 or 7 on the side. Therefore, no filter clogging occurs on the discharge port side. In this embodiment, since the suction port 5 and the discharge ports 6 and 7 are determined before piping, the suction port 5 can be made as large as possible according to each purpose. Can be made small enough to maintain the discharge flow rate. Further, in the forced circulation bathtub connection device 1 of the present embodiment, two discharge ports are provided, and the flow path in the forced circulation bathtub connection device 1 has few curved portions. Therefore, the bathtub connection device 1 for forced circulation of the present embodiment
Has a small internal pressure loss.

In the present embodiment, the filter on the suction side also uniformly captures dust and the like, and has a good appearance.
That is, in the bathtub connection device 1 for forced circulation of the present embodiment,
The hot water is introduced into the partition member 22 from the valve mounting portion 50 or 51. Therefore, it is expected that the flow rate of this part is higher than that of other parts. Therefore, if a filter member having an even opening as shown in FIG. 24 is employed, for example, when hot water is introduced from the valve mounting portion 50, dust is concentrated only on a portion corresponding to the hot water, and the appearance is poor. . On the other hand, in the forced circulation bathtub connection device 1 of the present embodiment, a portion of the filter member 23 facing the valve mounting portions 50 and 51 is masked and the portion is closed. For this reason, hot water is uniformly sucked from each opening 98 as shown by arrows in FIG. 22 and enters a space 120 serving as a suction chamber, and further enters the partition member 22 from, for example, the introduction valve 15 as shown in FIG. The form in which the portions facing the valve mounting portions 50 and 51 are masked and the portions are closed as in this embodiment is the most recommended shape of the filter member. 2
This does not deny the use of a filter member having an even opening as shown in FIG.

The forced circulation bathtub connection device 1 according to the present embodiment also has a feature that the stirring efficiency of the bathtub is excellent. In the forced circulation bathtub connection device, it is desirable that all the hot water be discharged from the discharge port in order to improve the stirring efficiency. However, as shown in FIG. 16, the fact is that hot water generally leaks from the air vent hole. In the forced circulation bathtub connection device 1 of the present embodiment, as shown in FIG. 14 and FIG.
06, the air vent small hole 110 of the filter member 23
Are shifted from each other. Therefore, the two small holes 116 and 110 communicate with each other through the gap between the side surface of the partition member 22 and the inside of the filter member 23. However, the flow path between the small holes 116 and 110 becomes complicated and exhibits a labyrinth-like operation effect. Therefore, for air, both small holes 116, 1
Although the hot water passes through 10 spaces, the hot water is difficult to pass. Therefore, only air is discharged from the air vent holes 110, and hot water is exclusively discharged from the discharge ports 6 and 7.

The forced circulation bathtub connecting apparatus 1 of the present embodiment is also excellent in stirring efficiency in that there is no short circuit in the flow path.
That is, in a general forced circulation bathtub connection device, there is a problem that a part of hot water is circulated in the device. Specifically, the hot water that has flowed out of the discharge opening of the partition member flows into the gap between the partition member and the filter member, and further flows into the space serving as the suction chamber, and is returned without being discharged. It flows to the piping side. The bathtub connection device 1 for forced circulation according to the present embodiment also takes measures against this problem. That is, in the forced circulation bathtub connection device 1 of the present embodiment, as shown in FIG.
The corner 115 on the front side and the corner 116 on the inner surface of the filter member 23 are in close contact with each other, so that the flow of hot water between the front and the side is cut off at the contact line between them. Therefore, as shown in FIG. 17B, the discharge openings 58,
The hot water that has exited 59 is entirely discharged from the discharge port 6 or 7 without flowing into the space 120 serving as the suction chamber. The close contact between the front corner 115 of the partition member 22 and the inside corner 116 of the filter member 23 may be performed via packing.

Next, another embodiment of the present invention will be described. FIG. 27 is a front sectional view of a forced circulation bathtub connection device according to another embodiment. FIG. 28 is a cross-sectional view illustrating a state in which priming is performed on the forced circulation bathtub connection device in the previous embodiment. FIG. 29 is a front cross-sectional view of the bathtub connection device 1 for forced circulation in another embodiment.

The bathtub connecting device 13 for forced circulation shown in FIG.
0 is the introduction valve 13 attached between the flow path A and the space 120
This is a modification of the mounting portion of No. 1. That is, in the previous embodiment, the introduction valve 17 is disposed at the center of the partition member 22, whereas in the present embodiment, the introduction valve 17 is disposed at a side part. In the present embodiment, the discharge valves 133 and 135 near the discharge ports 6 and 7 are plate-shaped, fixed to the partition member 22 with a shaft, and urged by a helical spring 136. . Further filter member 2
3 is fixed to the partition member 22 by screws 140.

The bathtub connection device 13 for forced circulation according to the present embodiment.
No. 0 has an advantage that it is easier to assemble than the bathtub connection device for forced circulation 1 of the previous embodiment. However, on the other hand, the bathtub connection device for forced circulation 130 has a drawback that it is difficult to perform priming. That is, depending on the type of the forced circulation type heat source device, there is a type that does not have a water supply path on the bath side as shown in FIG. 42, for example, and needs to prime the pump when installing the bathtub. Here, in the bathtub connection device for forced circulation 1 of the embodiment exemplified above, as shown in FIG.
This can be performed by removing the filter member 23 and directly pressing the hose 141 against the valve mounting portion 51. Here, the valve mounting portion 51 has a tapered or round shape so that the hose 141 can be pressed easily.

On the other hand, the forced circulation bathtub connecting device 1
In the case of 30, when the filter member 23 is removed and the hose is pressed to the center, only water enters the partition member 22 from the screw hole, which is very inefficient. It is also conceivable that the hose 141 is pressed against the introduction valve 131. However, the taper or the radius as in the forced circulation bathtub connection device 1 of the embodiment exemplified above cannot be provided due to size or design restrictions. 141 is difficult to press, and the efficiency is still poor.

Further, since the forced circulation bathtub connecting device 130 employs a device having a helical spring at the discharge valves 133 and 135, the operation of the valves 133 and 135 is more reliable than the previous embodiment. However, there is a disadvantage that the number of parts increases.

The bathtub connecting device 1 for forced circulation shown in FIG.
46 is the two forced circulation bath tub connecting devices 1 and 130
The introduction valve 17 mounted between the flow path A and the space 120 is disposed at the center of the partition member 22, and the valves 133 and 135 near the discharge ports 6 and 7 are plate-shaped. , Which is fixed to the partition member 22 with a shaft and urged by a helical spring 136.

Next, improvements and modifications of the details of the forced circulation bathtub connection device 1 will be described. FIG.
It is sectional drawing of the introduction valve part of the bathtub connection device for forced circulation of this invention which shows the problem of the bathtub connection device for forced circulation. FIG.
FIG. 31 is a sectional view corresponding to FIG. 30 in another embodiment. FIG. 32A is a plan view of the upper surface of the partition portion of the bathtub connection device for forced circulation of FIG. 31, and FIG. 32B is a plan view of the lower surface of the partition portion. FIG. 33 is a cross-sectional view of an introduction valve portion according to another embodiment.

The bathtub connection device 1 for forced circulation of the previous embodiment
In this case, the introduction valves 15 and 17 are fixed in such a manner as to be suspended by the locking portions 75. Therefore, the locking portion 75 may be cut or detached due to deterioration of the rubber due to long-term use or strong water flow at the time of priming. The introduction valves 15 and 17 are conveyed to the forced circulation heat source device by the water flow, and an accident that the pipes are clogged is expected.

Therefore, as a countermeasure against this, the introduction valves 15, 17
It is effective to provide a bar, a net, or a lattice-like member in the inner part of, and to stop the introduction valves 15, 17 at the lattice-like part when one of the introduction valves 15, 17 comes off.

FIG. 31 shows an introduction valve 1 from such a viewpoint.
This shows an example in which a lattice-like member 143 is provided inside 5, 17. According to the present embodiment, the introduction valve 15,
Even when 17 comes off, the introduction valves 15 and 17 can be stopped by the member 143 having a lattice shape or the like.

As the grid-like member 143, for example, a cross-shaped member as shown in FIG. FIG. 33 shows an example in which a projection 145 is provided on a lattice-like member 144 and the projections 145 abut the back surfaces of the shafts of the introduction valves 15 and 17. The projection 145 has the same function as the projections 90 and 91 described above, and
This is for preventing the shaft portions 70 of 5, 17 from being elongated to deteriorate the sealing performance.

Next, improvements of the discharge valves 16 and 18 will be described. FIG. 34 is a sectional view of a discharge valve portion showing a problem of the bathtub connection device for forced circulation. FIG. 35 is a sectional view of a discharge valve used in another embodiment. FIG.
FIG. 3 is a cross-sectional view of a main part of a forced circulation bathtub connection device equipped with the discharge valve shown in FIG. FIG. 37 is a perspective view of a discharge valve used in another embodiment. FIG. 38 is a perspective view of a discharge valve used in another embodiment. FIG. 39 is a side view of a discharge valve used in another embodiment of FIG. FIG. 40 is a cross-sectional view of a main part of a bathtub connection device for forced circulation equipped with a discharge valve according to a modification. FIG. 41 is a front view, a plan view, and a side view of a discharge valve employed in another embodiment.

In the forcible circulation bathtub connecting apparatus 1 described above, the structure in which the reinforcing ribs 83 of the discharge valves 16 and 18 are provided has been described. The function of the reinforcing rib 83 is that the discharge valves 16 and 18
Of the movable part is prevented from being turned up. That is, when the rigidity of the discharge valves 16 and 18 is low, as shown in FIG.
Since it is assumed that the 18 enters the partition member 22, in the above-described embodiment, the reinforcing ribs 83 are provided on the peripheral portions of the discharge valves 16 and 18 in order to prevent this.

A discharge valve 150 shown in FIG. 35 is another embodiment for achieving the same object, and has a metal or resin plate 151 built in the discharge valve. As shown in FIG. 36, the discharge valve 150 of the present embodiment
It can be installed in the same way as 6,18. The discharge valve 152 in FIG. 37 also has a resin plate 153 built therein. In the present embodiment, the U-shaped resin plate 153 is employed in accordance with the shapes of the openings 58 and 59.

Further, the discharge valve 155 shown in FIGS.
The three triangular contact members 156 are provided on the back of the movable portion 81.
Is provided. When the discharge valve 155 of the present embodiment is opened by receiving the water flow, the triangular contact member 156 contacts the valve seat 80 as shown in FIG. Adjust to constant. Therefore, in the present embodiment, the movable portion 81 does not open excessively, and the discharge valve is less fatigued.
Further, according to the present embodiment, since the opening of the movable portion 81 can be kept constant, the direction at the time of ejection can be predicted. That is, the direction of the hot water discharged from the discharge port is one of the important factors in setting the stirring efficiency.
However, in the case of the discharge valves 16 and 18 as in the previous embodiment, the opening degree of the movable portion 81 changes depending on the discharge amount, and it is difficult to accurately predict the discharge direction. On the other hand, in the discharge valve 155 adopted in the present embodiment, the movable portion 8
Since the opening degree of 1 is limited, it is easy to predict the ejection direction. In the present embodiment, as a member for limiting the opening of the valve,
The triangular contact member 156 is employed.
Is provided on the back surface of the movable portion 81, but a member having a shape other than a triangle may be employed as a member for restricting the opening degree of the valve.
In addition, a configuration in which a member for limiting the opening degree of the valve is provided on the pedestal portion 80 is also possible.

The discharge valve 158 shown in FIG. 40 has improved adhesion to the discharge valve seat. That is, the discharge valve 158 has a magnetic material 159 such as steel or nickel built therein. On the other hand, the openings 58,
A magnet 160 is arranged at a position 59 on the partition plate 47 side. In the present embodiment, the magnetic body 159 is attracted by the magnet 160 provided on the partition member 22, and the contact of the discharge valve 158 with the valve seat is ensured. In this embodiment, the discharge valve 158 incorporates a magnetic material and the partition member 22 incorporates a magnet. However, the discharge valve 158 incorporates a magnet, and the partition member 22 includes a magnetic material. Is also possible.

The discharge valve 162 shown in FIG.
3 is an example of only one. Further, in the present embodiment, the shaft portion has a prismatic shape.

[0072]

The bathtub connecting device for forced circulation according to the present invention has the effects that the pressure loss due to the flow path change is small and the flow path resistance is low.

[Brief description of the drawings]

1A and 1B show a forced circulation bathtub connection device according to an embodiment of the present invention, wherein FIG. 1A is a front view and FIG. 1B is a bottom view.

FIG. 2 is a circuit diagram of a combination of valves incorporated in the forced circulation bathtub connection device of FIG. 1;

FIG. 3 is a sectional view of the bathtub connection device for forced circulation of FIG. 1;

FIG. 4 is an exploded perspective view of the bathtub connection device for forced circulation of FIG. 1;

5 is a perspective view of an inner fitting member of the bathtub connection device for forced circulation of FIG. 1;

6A and 6B show a main body of a partition member of the bathtub connection device for forced circulation of FIG. 1, wherein FIG. 6A is a front view, FIG.
(C) is a rear view, (d) is a perspective view of an opening, (e) is a detailed sectional view of the opening, and (f) is a view in the direction of arrow B.

7 (a) is a cross-sectional view of an introduction valve of the bathtub connection device for forced circulation in FIG. 1, (b) and (c) are cross-sectional views showing a procedure for mounting the introduction valve, and (d). FIG. 7 is a cross-sectional view illustrating a procedure for attaching an introduction valve according to another embodiment.

FIGS. 8A and 8B are perspective views of the introduction valve of FIG. 7, wherein FIG. 8A shows a state seen from above and FIG. 8B shows a state seen from below.

9 (a) and 9 (b) are explanatory views showing a mounting state of the introduction valve of FIG. 7;

10A and 10B show a discharge valve of the bathtub connection device for forced circulation in FIG. 1, wherein FIG. 10A is a front view and FIG. 10B is a side view.

FIG. 11 is a perspective view of a discharge valve of the bathtub connection device for forced circulation of FIG. 1;

FIG. 12 is an enlarged sectional view showing an attached state of the discharge valve of FIG. 11;

13 shows an exterior member of a filter member of the bathtub connection device for forced circulation of FIG. 1, wherein (a) is a front view, (b) is a plan view, (c) is a bottom view, and (d) is a rear view. is there.

FIG. 14 is an explanatory view illustrating an assembled state of the forced circulation bathtub connection device of FIG. 1;

FIG. 15 is a plan view illustrating the positional relationship of small holes for venting air in the forced tub connecting device of FIG. 1;

FIG. 16 is a perspective view of the forced circulation bathtub connection device for explaining the air bleeding operation of the forced circulation bathtub connection device of FIG. 1;

FIGS. 17A and 17B are diagrams illustrating an assembled state of the bathtub connection device for forced circulation of FIG. 1, wherein FIG. 17A is a perspective view of a partition member, and FIG. FIG.

FIG. 18 is an explanatory diagram schematically illustrating the inside and inside of the forced circulation bathtub connection device of FIG. 1;

FIG. 19 is a perspective view schematically illustrating a flow of hot water in a partition member of the bathtub connection device for forced circulation.

FIG. 20 is an explanatory diagram schematically illustrating the inside and inside of the forced circulation bathtub connection device of FIG. 1;

FIG. 21 is a perspective view schematically illustrating a flow of hot water in a partition member of the bathtub connection device for forced circulation.

FIG. 22 is a front view of a filter member schematically illustrating a flow of hot water around a suction port of the bathtub connection device for forced circulation.

FIG. 23 is a cross-sectional view of the filter member and the partition member schematically illustrating the vicinity of the suction port of the bathtub connection device for forced circulation and the flow of hot water in the partition member.

FIG. 24 is a front view of a filter member of a bathtub connection device for forced circulation according to a modified embodiment.

25 (a) is a front sectional view of a main part showing behavior of a discharge valve when hot water is discharged from a discharge port of the bathtub connection device for forced circulation in FIG. 1, and FIG. a) AA
It is sectional drawing.

26A is a front cross-sectional view of a main part showing a behavior of a discharge valve when hot water is discharged from a discharge port of a bathtub connection device for forced circulation according to a modified embodiment, and FIG. It is an AA sectional view of (a).

FIG. 27 is a front sectional view of a forced circulation bathtub connection device according to another embodiment.

FIG. 28 is a cross-sectional view illustrating a state when priming is performed on the forced circulation bathtub connection device in the previous embodiment.

FIG. 29 is a front sectional view of a forced circulation bathtub connection device according to another embodiment.

FIG. 30 is a cross-sectional view of an introduction valve portion of the forced circulation bathtub connection device of the present invention showing a problem of the forced circulation bathtub connection device.

FIG. 31 is a cross-sectional view corresponding to FIG. 30 in another embodiment.

32 (a) is a plan view of the upper surface of the partition portion of the bathtub connection device for forced circulation of FIG. 31, and FIG. 32 (b) is a plan view of the lower surface of the partition portion.

FIG. 33 is a cross-sectional view of an introduction valve portion according to another embodiment.

FIG. 34 is a cross-sectional view of the discharge valve portion showing a problem of the bathtub connection device for forced circulation.

FIG. 35 is a cross-sectional view of a discharge valve used in another embodiment.

36 is a sectional view of a main part of a bathtub connection device for forced circulation equipped with the discharge valve shown in FIG. 35.

FIG. 37 is a perspective view of a discharge valve used in another embodiment.

FIG. 38 is a perspective view of a discharge valve used in another embodiment.

FIG. 39 shows a discharge valve used in another embodiment,
(A) is a side view at the time of normal, and (b) is a side view at the time of deformation.

FIG. 40 is a cross-sectional view of a main part of a bathtub connection device for forced circulation equipped with a discharge valve of a modified example.

FIG. 41 shows a discharge valve used in another embodiment,
(A) is a plan view, (b) is a front view, and (c) is a side view.

FIG. 42 is a piping diagram showing the structure of a forced circulation bathtub.

FIG. 43 is a front view and a bottom view of a bathtub connection device for forced circulation in the prior art.

FIG. 44 is a cross-sectional view of a bathtub connection device for forced circulation in the prior art.

[Explanation of symbols]

 1,130,146 Bathtub connection device for forced circulation 5 Suction port 6,7 Discharge port 10,11 Connection part 15,17 Introducing valve 16,18 Discharge valve 22 Partition member 35 Bottom plate 36 Main body 37 Packing 38 Tubular part 40 Flange part 43 Concave part 45 Through hole 47 Partition wall 48 Peripheral wall 50, 51 Valve mounting part 53 Shaft insertion hole 58, 59 Opening 63 Channel forming wall

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Makoto Hamada 93, Edo-cho, Chuo-ku, Kobe-shi, Hyogo Pref. (72) Inventor Katsuhiro Hidaka 93, Edo-cho, Chuo-ku, Kobe, Hyogo Prefecture Inside Noritz Co., Ltd.

Claims (2)

[Claims] 1. A connection having a connection portion connected to an outgoing pipe or a return pipe of a forced circulation heat source machine, a discharge port for discharging hot water into a bathtub, and a suction port for sucking hot water in the bathtub. In a forced circulation bathtub connection device provided with a partition member that connects the portion with the discharge port and the suction port, the partition member has a bottom plate and a main body, and the bottom plate has a flange portion and a tubular portion protruding from the flange portion. An opening is provided in the flange portion, and in a state where the main body and the bottom plate are combined, the inside of the partition member is partitioned into two spaces by a flow path forming wall, and one of the partitions has a tubular bottom plate. The opening in the partition, the space in this partition communicates with the outside through the tubular portion, and the other partition communicates with the outside through the opening in the bottom plate, the bathtub connection for forced circulation characterized by the above-mentioned. apparatus. 2. In a state where the main body and the bottom plate are combined, the partition inside the partition member includes a valve mounting portion and an opening, respectively, and the valve mounting portion allows a water flow into the partition member to allow water flow into the partition member. 2. The forced circulation bathtub according to claim 1, wherein an introduction valve for preventing water flow is provided, and the opening is provided with a discharge valve for allowing water flowing from inside the partition member to the outside and preventing the water flow from being reversed. Coupling device.