JPH06304082A - Connecting device of forced circulation piping for bathtub - Google Patents

Abstract

PURPOSE:To improve the installation property by connecting a forced circulation piping to a piping connecting port without restricting the position of a bathtub opening and without discriminating the suction side and discharge side. CONSTITUTION:A going out pipe and returning pipe are freely connected to piping connection ports 13, 14 without designating the directions, and independent water passages 15, 16 are formed. In addition, an approx. upside down V-shaped opening which faces downward, approx. verge opening 18, and an approx. parallel type opening 19 are formed, and at opposite position to these openings, a filter holding case 21 is arranged. By this method, water in a bathtub is made to have an even temperature distribution by plural streams, an approx. upside down V-shaped stream, approx. vertical stream and in addition, an approx. parallel stream.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for a forced circulation pipe for forcibly circulating bath water in a bath with a heater or the like outside the bath.

[0002]

2. Description of the Related Art Conventionally, a bathtub connecting device of this type is used when a wrong connection is made between the forward pipe and the return pipe of the circulation pipe as disclosed in Japanese Utility Model Publication No. 3-36852 and Japanese Utility Model Publication No. 4-129063. The inside of the connection fitting attached to the partition can be partitioned to form the suction chamber and the discharge chamber independently.
In Japanese Patent No. 36852, there is provided a switching means in the connection fitting that can mutually change the communication direction of the pipe connection port between the suction chamber and the discharge chamber. No. 36852 is improved, a changeable switching means is eliminated, and a flow path of a suction chamber and a discharge chamber is provided separately by a conduit connection frame body and a flow path forming main body. It is formed in a bifurcated shape that opens the inflow and outflow openings diagonally to the left and right, and has the feature that it is not necessary to reconnect the piping even if the connection between the outgoing pipe and the return pipe is incorrect at the conduit connection part. It was In addition, a filter was arranged at a position facing the opening and outlet.

[0003]

However, in the above-mentioned conventional configuration, that is, Japanese Utility Model Publication No. 3-36852, the suction and discharge flow directions cannot be changed even by operating the switching means in the connection fitting. The suction flow is always sucked in a substantially parallel flow with respect to the bottom surface of the bath, while the discharge flow is discharged obliquely downward to the left and right with respect to the bottom surface of the bath. Therefore, in order to achieve a uniform hot water temperature distribution, effective stirring and circulation of bath water near the bottom of the bath is a prerequisite. Therefore, the bathtub opening must be necessarily provided near the bottom of the bathtub, and the bathtub continuous device must be installed. In the experiments conducted by the present inventors, a uniform hot water temperature distribution could not be achieved unless the bath opening was within 150 mm from the bottom of the bath.

On the other hand, in Japanese Utility Model Laid-Open No. 129063/1992, a bifurcated structure in which the suction opening and the discharge opening are diagonally downward right and left, that is, when the suction opening is on the left side, the discharge opening is on the right side, The agitation and circulation of the bath water is a simple flow, and the bath water in the bath cannot be sufficiently agitated and circulated unless a bath opening is provided near the bottom of the bath as described above, so a uniform hot water temperature distribution is obtained. I can't. Further, since there is only one suction opening, there is a drawback that the filter may be clogged quickly due to stains in the bath water.

Therefore, the present invention can improve the pipe workability and limit the usability of the bath water to a uniform hot water temperature distribution without limiting the bath opening position. Further, the present invention provides a bathtub connecting device for forced circulation piping that can significantly improve the filter clogging time.

[0006]

In order to achieve the above object, the means of the bathtub connecting device for forced circulation piping according to the present invention fixes the bathtub water to the outside of the bathtub by fixing the bathtub water in a watertight manner to the attachment opening of the bathtub. A bathtub fitting having a pipe connection port connected to the outflow pipe and the return pipe flowing into the bathtub, and a water passage for independently circulating the bathwater between the pipe connection port and the opening in the bathtub. The opening in which the bath water flows in and out of the bathtub is configured to face downward, and a substantially parallel flow is added to one of the combined flow of the substantially C-shaped flow and the substantially vertical flow that flows in and out through the opening. A plurality of streams are provided, and a filter holding case is arranged at a position facing the opening.

[0007]

With the above-described structure, the connecting device for the forced circulation pipe of the bathtub according to the present invention has the bathtub fitting attached and fixed to the attachment opening of the bathtub, and the forward pipe and the return pipe can be connected to any of the pipe connection ports. Since they can be connected to each other as desired, piping work can be facilitated and speeded up.

Further, the opening in which the bath water flows in and out of the bath is configured to face downward, and the circulation flow is a plurality of flows in which a substantially parallel flow is added to either one of the combined flow of the substantially C-shaped flow and the substantially vertical flow. To constantly generate a water flow that stirs and circulates the bath water in the bottom layer of the bathtub, and stirs and circulates the bath water in a substantially C-shape flow and a substantially parallel flow and a substantially vertical flow and a substantially parallel flow with respect to the bottom surface. As a result, not only the bath water near the bottom of the bath but also the front of the bath connecting device and the side of the bath are agitated and circulated in a plurality of streams, so that a uniform hot water temperature distribution can be obtained.

Further, by forming the opening for the inflow and outflow of the bathtub water downward, even if the bathtub opening is provided in the upper part of the bathtub, the bathwater near the bottom of the bathtub can be sufficiently agitated and circulated. 100 level bath opening position
A uniform hot water temperature distribution can be obtained even when it is about 300 mm.

Further, even if a combination of a substantially C-shaped flow and a substantially vertical flow is added with a substantially parallel flow and a filter holding case is arranged at a position facing the opening, the bath water is The filter of the filter holding case must be used to filter the dirt in the bath water with at least several parts of the filter, which speeds up the clogging of the filter due to the conventional concentrated filtration, and the circulation amount of the bath water due to the filter filtration resistance. It is possible to exert an excellent effect that the bath water is stirred and circulated with a stable circulation amount without significantly decreasing.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The forced circulation pipe connecting device of the present invention will be described in more detail with reference to the specific embodiments shown in the accompanying drawings.

1 and 2 show a first embodiment of the present invention.
2 is a schematic sectional configuration diagram of the bathtub connecting device, and FIG. 2 is a schematic front configuration diagram when the filter holding case of FIG. 1 is omitted. Mounting opening 2 near the bottom surface 1a at the bottom of the bathtub side wall 1
The rear case 4 from the outside of the bathtub 1 through the packing 3 for preventing water leakage, and the fixed case 5 from the inside.
Is fastened with the screw portion 6 and fixed so as to sandwich the bathtub side wall 1. The above-mentioned rear case, packing 3, and fixed case 5
In the present invention, the configuration consisting of is referred to as a bathtub fitting.

The rear case 4 has an inner case 9 inserted and fixed to the protruding cylinder 7 via a watertight O-ring 8. A watertight packing 10 is arranged between the fixed case 5 and the inner case 9, and the outer case 11 and the outer case 11 are fitted and fixed by screws 12. Further, the rear case 4 is provided with pipe connection ports 13 and 14, respectively, to connect a heater having a built-in pump and a forward pipe and a return pipe of a forced circulation pipe (the pump, the heater, the forward pipe, and the return pipe are not shown). ).

Rear case 4, fixed case 5, inner case 9
The water passages 15 and 16 are independently formed by the outer case 11 and the outer case 11. More specifically, the substantially C-shaped opening 17 and the substantially vertical opening 18 are formed in the concave wall 9a of the inner case 9.
By fitting the convex wall 11a of the outer case 11 into contact with each other, the water passages 15 and 16 are independently partitioned. Further, the substantially C-shaped opening 17 and the substantially vertical opening 18 are both configured to face downward. Further, the outer case 9 is provided above the substantially vertical type opening 18, and the substantially parallel type opening 1 is provided with respect to the bath bottom surface 1a.
9 is provided.

Further, a support protrusion 20 is provided at the center of the outer case 9, and a screw 22 of the filter holding case 21 is fastened to the screw hole 20a so that the substantially C-shaped opening 17 and the substantially vertical opening 18 described above are formed. Further, the filter holding case 21 is arranged so as to face the substantially parallel type opening 19. The filter holding case 21 is provided with a filter 21a for filtering the bath water on the outer peripheral wall and the front wall, and is arranged with a proper space between each of the openings 17, 18 and 19 and the filter 21a.

The appropriate space means that the filter 21 is effectively used, that is, the filtration area of the filter 21 is increased, and the heated bath water is diverted and dispersed into the bath by providing a space. It is necessary for the purpose of reducing the feeling of heat to the human body, and the preferable space distance is about 2 to 10 mm.

Further, the downward configuration of the substantially C-shaped opening 17 means within 180 °, and the angle θ (not shown) of the opening 17 is preferably in the range of 160 ° to 90 °. That is, when the angle θ is 160 ° or more, the inflow / outflow of the bath water becomes substantially parallel to the bath bottom surface 1a on the side surface of the bath, and particularly when the bath opening is provided in the upper portion, the bath water in the bath is homogeneous. It becomes impossible to circulate with stirring. On the other hand, when the angle is 90 ° or less, the inflow and outflow of the bath water becomes a short circuit because it is close to the substantially vertical type opening 18, and this also allows the bath water in the bath to be stirred and circulated as a whole. become unable.

Next, based on the above-mentioned structure, a passage system for bathtub water in the bathtub will be described with reference to FIGS. 3 and 4. Figure 3
The water passage diagrams of (a) and (b) are when the pipe connection port 13 is connected to a return pipe of a heater (not shown), and FIG. 4 is a model circulation flow diagram, (a) is a top view. The figure and (b) each show a side view, and the solid line is the suction circulation flow path and the broken line is the discharge circulation flow path. In FIG. 3, the water passage 15 formed independently by sucking up the bath water near the bottom surface 1a of the bath into the substantially C-shaped opening 17 in an upward flow.
Flow into. The inflowing bath water passes through the water passage 15 and returns from the pipe connection port 13 provided in the rear case 4 to the heater by the return pipe.

A forced circulation pump is built in the heater,
The bath water is forcibly circulated and heated by a heater. The water in the bathtub heated by the heater passes through the outflow pipe, and the water passage 1 is formed independently from the pipe connection port 14 of the rear case 4.
Inflow to 6. The inflowing bath water passes through the opening 9b provided in the lower portion of the inner case 9, and is directed to the bottom surface 1a of the bath by the downward substantially vertical opening portion 18 and the substantially parallel opening portion 19 provided in the lower portion of the outer case 11, respectively. On the other hand, it is discharged as a substantially vertical flow and a substantially parallel flow. On the other hand, when the return pipe is connected to the pipe connection port 14, the reverse of FIG.

As is clear from the model circulation flow path diagram of FIG. 4, the cold bath water on the bottom side of the bath is stirred and circulated by upward flow suction, while the bottom and front of the bath are discharged downward and parallel flow. A uniform hot water temperature distribution can be obtained by further agitating circulation and a plurality of flows with warm bath water by discharging. Although not shown, it is important to circulate the bath water in the bathtub with sufficient agitation, since warm water generally tends to naturally convect warm water to the upper layer and cold water to the lower layer. Then, the substantially C-shaped opening 17 and the substantially vertical opening 18 of the present invention are configured to face downward.

FIG. 5 shows a second embodiment of the present invention in which a substantially parallel opening is provided in a part of the water passage of the substantially C-shaped opening. Further, FIG. 5 is a schematic front view in which the filter holding case is removed, and a substantially parallel opening 24 is provided in the outer case 22 in the vicinity of the substantially C-shaped opening 23. Although the water flow path diagram and the model circulation flow path diagram are not shown, the stirring circulation flow flows in and out in a substantially C-shaped flow at the substantially C-shaped opening 23, and flows in and out at a substantially parallel flow at the substantially parallel-shaped opening 24. And substantially vertical type opening 2
5, a substantially vertical flow and a plurality of flows as described in detail with reference to FIGS. 3 and 4 provide a uniform hot water temperature distribution as described above.

Although not described in detail in FIGS. 1 to 5 above,
The filter holding case can be detachably arranged, and by increasing the filter area with respect to the total opening area of the substantially C-shaped opening, the substantially vertical opening and the substantially parallel opening. Therefore, cleaning by clogging of the filter, that is, usability can be significantly improved. Also, a plurality of substantially parallel openings may be provided. Further, round holes, circular holes, triangular holes, rectangular holes, and polygonal holes may be used.

Further, in contrast to the opening areas S ₁ and S ₂ of the substantially C-shaped openings and the substantially C-shaped openings, the opening areas S ₃ of the substantially parallel openings are S ₁ ≧ S ₃ and S ₂ ≧ S. ₃ is preferred. That is, when the opening area S ₃ of the substantially parallel type opening becomes larger than the above S ₁ and S ₂ , it becomes impossible to sufficiently stir and circulate the bath water near the bottom of the bath, and the bath opening position is limited to some extent. The need arises.

[0024]

As is apparent from the above description, in the device for connecting the forced circulation pipe of the bath according to the present invention, it is not necessary to indicate the direction of connection of the forced circulation pipe at the pipe connection port. Further, the bath water in the bath can be agitated and circulated in a plurality of streams without being limited to the bath opening position, and a uniform hot water temperature distribution can be obtained.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a connecting device for a forced circulation pipe of a bath according to a first embodiment of the present invention.

FIG. 2 is a front view of the same device with a filter holding case removed.

FIG. 3 (a) is a partial cross-sectional view showing a water passage of the device (b) a front view of the device

FIG. 4 (a) is a top view of the circulating flow in the bathtub viewed from above when the device is installed, and FIG. 4 (b) is a side view of the circulating flow in the bathtub seen from the side.

FIG. 5 is a front view of a connecting device for a forced circulation pipe of a bath according to a second embodiment of the present invention.

[Explanation of symbols]

 4 Rear Case 5 Rear Case 9 Inner Case 11, 22 Outer Case 13, 14 Piping Connection Port 15, 16 Water Channel 17, 23 Nearly C-Shaped Opening 18, 25 Nearly Vertical Opening 19, 24 Nearly Parallel Opening 21 filter holding case 21a filter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Ando 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A bathtub fitting having a pipe connection port that is watertightly fixed to a mounting opening of a bathtub and is connected to an outflow pipe for outflowing the bathwater out of the bathtub and a return pipe for inflowing the bathwater into the bathtub, and the pipe. A circulation passage that independently circulates bath water is provided between the connection port and the opening in the bath, and the opening in which the bath water flows in and out of the bath is configured to face downward, and a circulation flow that flows in and out from the opening. Is a combined flow of a substantially C-shaped flow and a substantially vertical flow, and a substantially parallel flow is added to the plurality of flows, and a connecting device for a forced circulation pipe of a bathtub in which a filter holding case is disposed at a position facing the opening. .