JPH09243179A - Connector for bathtub of forced circulation type bathtub water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for bathtub of a forced circulation type bathtub water heater in which the directionality of a bathtub water circulation route is eliminated to avoid the troublesome checking in a piping construction work and erroneous piping and the characteristics of uniformizing bathtub water temperatures can be improved. SOLUTION: The connector 1 for a bathtub includes a pipe connection part 6 which is connected to an outlet pipe and a return pipe for circulating bathtub water outside the bathtub and a connector receiving outer pipe 7 connected to the part 6, and a guide 9, in which a left opening 9a and a right opening are provided so as to independently communicate with the outlet pipe and the return pipe, is provided in the pipe 7 and these openings are oriented vertically downward toward the bottom surface of the bathtub 14 and spaced apart a predetermined interval L.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub connector for connecting a bathtub and a forced circulation type bathtub outside the bathtub through a forward pipe and a return pipe for circulating bathtub water.

[0002]

2. Description of the Related Art Conventionally, there is known a forced circulation type bath kettle (hereinafter referred to as a bath kettle) which is connected to a bath via an outflow pipe and a return pipe and drives a circulation pump to circulate and heat bath water. . A connection tool for a bathtub is provided at the connection portion with the bathtub to connect the outflow pipe and the return pipe from the bathtub. As shown in FIG. 3, in the bathtub connector, the pipe connection portion 56 and the connection receiving pipe 57 are clamped and fixed to the through hole 14a provided in the side wall of the bathtub 14 via the packing 58. A partition pipe 59 is attached inside the connection outer pipe 57 to form a passage forming portion 67 having a double pipe structure for partitioning the forward and backward flow paths. A joint 52 connected to the outgoing pipe 10b from the bathtub and a joint 53 connected to the return pipe 10a are welded to the pipe connecting portion 56. The partition tube 59 includes an inner tube 59b provided with an opening 59d horizontally opened toward the bathtub side and a disc-shaped partition surface 59c provided around the opening 59d, and is provided in a space with the connection receiving tube 57. The outer passage 59a is formed. Inner tube 59b
Engages with the pipe connecting portion 56 via the O-ring 55.
The outer periphery of the connection receiving tube 57 on the bathtub side covers the opening 59d and the partition surface 59c of the partition tube 59 and the connection receiving tube 57.
A cap 54 that fits around the outer circumference is provided. Cap 5
4 is provided with a plurality of intake ports 54a on the front surface and two ejection ports 54b that are opened obliquely downward on the side surface. Intake 54a
A mesh filter 60 is applied to the ejection port 54b. By the pump drive of the bath kettle, the bath water is first sucked into the cap 54 through the intake port 54a, passes through the inner pipe 59b from the opening 59d of the partition pipe 59, passes through the joint 53, and enters the bath bath through the return pipe 10a. Bath water heated in the bathtub (hereinafter referred to simply as "hot water") flows from the bathtub to the outlet pipe 1
Enter joint 52 through 0b. The hot water entering the joint 52 passes through the outer passage 59 a of the partition tube 59 and the jet port 5 of the cap 54.
It is jetted obliquely downward in the bathtub 14 from 4b. The jetted hot water is agitated by convection.

[0003]

However, in this bathtub connector 51, the forward path of the bathtub water, that is, the opening of the return pipe and the return pipe in the bathtub is directional, and the forward pipe 10b and the return pipe 10a are connected to each other. If they are connected in reverse, even if the bath water is circulated and heated, the hot water is jetted in the horizontal direction and it is difficult for the convection to go up and down, so that the temperature of the bath water is not uniform. Therefore, when connecting these pipes, it is troublesome to carry out the construction carefully while checking. In order to solve this, in Japanese Patent Application Laid-Open No. 8-14667, a hot water path is divided into two parts, which are opened symmetrically downward to the bathtub side.
There is shown a bathtub connector in which hot water is jetted obliquely downward from either opening regardless of whether the forward pipe or the return pipe is connected. Even in this case, although the problem of directionality was solved in the connection of the pipes, the outlet is provided diagonally downward, so the hot water does not reach the bottom of the bath sufficiently and the bath water temperature is even. There was one more thing to do. The forced circulation bathtub bathtub connector of the present invention solves the above problems, eliminates the directionality of the path of bathtub water, prevents the trouble of confirmation in piping work and erroneous piping, and makes the bath water temperature uniform. The purpose is to

[0004]

In order to solve the above-mentioned problems, the bathtub connector of the forced circulation type bath kettle according to claim 1 of the present invention is connected to a going pipe and a return pipe for circulating bath water to the outside of the bath. And a pipe connection portion that is connected to the pipe connection portion,
A passage forming portion internally provided with a first passage and a second passage which are independently communicated with the forward pipe and the return pipe and open toward the bathtub side;
In a bathtub connector for a forced circulation type bath kettle, which is equipped with a cap for covering both opening portions of the first and second passages of the passage forming portion, the opening portions of the passage forming portion are provided to the left and right. The gist of the invention is that the openings are provided at a predetermined interval and are parallel to each other and open right below the bottom surface of the bathtub.

According to a second aspect of the present invention, there is provided a bathtub connector of a forced circulation type bath kettle according to the second aspect of the present invention, in which the opening portions are spaced apart by 60 mm or more in parallel. What is done is summarized.

In the forced circulation type bath kettle, a forward pipe and a return pipe are connected from the bath pot to the bathtub connector, and bath water heated in the bath pot is circulated through the forward pipe and the return pipe. At that time, the bath kettle rotates the pump to suck the bath water from the return pipe and eject the heated bath water (hereinafter, simply referred to as hot water) from the outflow pipe. In the bathtub connector of the forced circulation type bath kettle according to claim 1, the bathtub water is sucked from the opening of the first passage or the second passage connected to the return pipe of the bathkettle, and is connected to the forward pipe. Hot water is jetted from the opening of the first passage or the second passage. For example, when the first passage is connected to the return pipe of the bath kettle, the bath water is sucked from the opening of the first passage, the hot water is circulated from the outflow pipe to the second passage through the bath kettle, and Hot water is ejected from the opening of the passage. On the other hand,
When the connection to the bathtub is reversed, on the contrary, the bath water is sucked from the opening of the second passage and the hot water is ejected from the opening of the first passage. Further, since both of these openings are provided at a predetermined interval on the left and right and open parallel to each other and directly below the bottom surface of the bathtub, hot water is jetted to the bottom surface of the bathtub and convects to the upper portion. The temperature of the tub water is more uniform than when squirting in an oblique or horizontal direction, because the squirted hot water has the largest temperature difference (the temperature of the tub water decreases toward the bottom). Also, whichever the opening on the left or right, the opening is just below the bottom of the bathtub, so the opening that blows out is the left or right regardless of which is connected to the forward or return pipe of the bathtub and the pipe connection. There is no difference in the temperature equalizing performance of bath water just by changing the bath.

Further, according to the connecting device for a bathtub of the forced circulation type bath kettle according to claim 2, the left and right openings are 60 m in parallel.
Since the openings are separated from each other by m or more, the hot water spouted from one opening will not be sucked and returned from the other opening as it is. Therefore, the temperature of the bath water becomes more uniform.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION In order to further clarify the constitution and operation of the present invention described above, preferred embodiments of the bathtub connector of the forced circulation bathtub of the present invention will be described below.
FIG. 1 is a schematic configuration diagram of a bathtub connector 1 of a forced circulation type bath kettle as one embodiment, and FIG. 2 is a forced circulation type bathtub 11 with hot water supply equipped with the bathtub connector 1 (hereinafter, simply It is a schematic block diagram of a bathtub 11). The bathtub 11 is roughly classified into a circulation heating circuit 12 that circulates and heats bath water through the bathtub connector 1, a hot water supply circuit 13 that supplies hot water to the bathtub 14 and the general hot water supply passage 19, and controls the operations of both circuits. And a controller 15.

In the bathtub connector 1, as shown in FIG. 1, a pipe connecting portion 6 and a connection receiving pipe 7 are screwed to a through hole 14a provided in a side wall of the bathtub 14 through a packing 8. Hold it in place. Attach the guide 9 inside the connection outer tube 7,
A passage forming portion 17 having a double pipe structure for partitioning the forward and backward flow paths is formed. The joint 2 and the joint 3 that communicate with the in-cup circulation path 27 of the circulation heating circuit 12 via the forward and return pipes are welded to the pipe connecting portion 6. The passage forming portion 17 forms an outer passage 9g in the space between the connection receiving pipe 7 and the guide 9. Guide 9
Is fitted to the pipe connecting portion 6 via the O-ring 5 on the pipe side, and opens on the bathtub side a left opening 9a communicating with the inner pipe 9e and a right opening 9b communicating with the outer passage 9g. . The left opening 9a and the right opening 9b are symmetrically opened toward the bottom of the bathtub at a predetermined distance L (for example, 60 mm or more) from each other in the vertical direction. The left opening 9a is a circulation path 9 having an inverted L-shaped cross section.
It communicates with the inner tube 9e via c, and the one right opening 9b is
It communicates with the outer passage 9g through the circulation passage 9d having a hook-shaped cross section and the guide inlet 9f. On the outer periphery of the connection outer tube 7 on the bathtub side,
The right opening 9a and the left opening 9 of the guide 9 are cup-shaped.
The cap 4 provided with the side surface openings 4d and 4e which cover b and are provided on the side surfaces corresponding to the openings are fitted. A plurality of front openings 4c are provided on the front surface of the cap 4, and a net filter 16 is provided on the front openings 4c and the side openings 4d and 4e. The mesh filter 16 filters dirt such as hair when the bath water circulates and passes through the mesh filter 16.

In the circulation heating circuit 12, combustion air is supplied to the combustion chamber 22 by the fan 24 and the gas is burned in the combustion chamber 22. Then, the bath water is forcibly circulated by the pump 20 while heating the heat exchanger 21 provided in the in-cup circulation path 27. The hot water supply circuit 13 is the circulation heating circuit 12
Similarly, the water supplied from the water inlet to the heat exchanger 31 is heated by gas combustion to supply hot water. The controller 15 performs circulation heating control, automatic hot water supply control, and the like, and includes a CPU, RAM, and a well-known arithmetic and logic operation circuit (not shown).
It is composed of a ROM, an input interface for inputting signals from various sensors, an output interface for outputting drive signals to various actuators, and the like.

In the bathtub 11 provided with this bathtub connector 1, the return pipe 10a and the outflow pipe 10b are connected via the joints 2 and 3 welded to the pipe connection portion 6, and the heat exchanger 21 is connected.
Circulate the bath water heated by. The heated bath water (referred to as hot water) enters the guide 9 provided inside the connection receiving tube 7 and is jetted into the bath 14 from the left opening 9a or the right opening 9b which is the exit of the guide 9. Return to joint 3 and pipe 10
In the case of piping a, the bath water is sucked from the left opening 9a, passes through the return pipe 10a via the inner pipe 9e, and the hot water flows into the outer passage 9g from the outgoing pipe 10b via the joint 2. Then, the hot water is jetted from the outer passage 9g, the guide inlet 9f, the circulation passage 9d, and the right opening 9b to the bathtub 14. On the other hand, when the connection with the bath pot 11 is reversed and the return pipe 10a is connected to the joint 2, the previous route is completely reversed, and the bath water is sucked from the right opening 9b and the left opening 9a.
Hot water gushes out of it. The hot water is jetted out just below the bottom of the bathtub, and returns halfway to convect to the upper part. Left or right opening 9
Even in the case of a and 9b, since the opening is just below the bottom surface of the bathtub, no matter which route the bathwater is connected to by the connection between the bath kettle 11 and the bathtub connector 1, the hot water has the highest temperature difference. Larger (the temperature of the bath water is lower toward the bottom) is jetted toward the bottom of the bath bottom, so the bath water temperature becomes more uniform than when jetted diagonally or horizontally. Moreover, since both of these openings 9a, 9b are open at a predetermined distance L (60 mm or more) from each other, the hot water spouted from one opening may be sucked from the other opening as it is. Absent. (In addition, in the test by the applicant, it was obtained that the opening portions 9a and 9b can make the bath water temperature uniform without affecting each other by separating them by 60 mm or more.)

[0012]

As described in detail above, claim 1 of the present invention
In the bathtub connector of the forced circulation type bath kettle described, the left and right openings open directly below the bottom surface of the bathtub, and hot water spouts from either opening to just below the bottom surface of the bathtub. The temperature of the bath water becomes more uniform than in the case of jetting in the same direction. In addition, since there is no difference in the uniformizing performance of the bath water temperature regardless of which of the forward pipe or the return pipe of the bathtub and the pipe connecting portion is connected, the pipe connecting work is not troublesome.

In the bathtub connector of the forced circulation type bath kettle according to the second aspect of the present invention, the hot water spouted from one opening is not sucked and returned as it is from the other opening.
It has an excellent effect that the temperature of the bath water becomes more uniform.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a bathtub connector of a forced circulation bathtub as an example.

FIG. 2 is a schematic configuration diagram of a bathtub equipped with a bathtub connector.

FIG. 3 is a schematic configuration diagram of a bathtub connector of a forced circulation type bath kettle as a conventional example.

[Explanation of symbols]

 1,51 Bathtub connector 2,3,52,53 Joint 4,54 Cap 5,55 O-ring 6,56 Piping connection 7,57 Connection receiving tube 8,58 Packing 9 Guide 9a Left opening 9b Right opening Parts 9c, 9d Circulation path 9e Inner tube 9f Guide inlet 9g Outer path 10a Return tube 10b Outgoing tube 11 Bath kettle 12 Circulation heating circuit 13 Hot water supply circuit 14 Bathtub 59 Partition tube 16,60 Filter

Claims (2)

[Claims] 1. A pipe connecting portion connected to a forward pipe and a return pipe for circulating bath water to the outside of the bath, and a bathtub connected to the pipe connecting portion and internally communicating with the forward pipe and the return pipe independently. First passage and second opening to the side
A bathtub connector for a forced circulation bathtub, which is equipped with a passage forming portion having a passage and a cap that covers both openings of the first and second passages of the passage forming portion, wherein the passage forming portion is formed. Both openings of the part are provided at a predetermined interval on the left and right sides, and are opened parallel to each other and directly below the bottom surface of the bathtub. 2. The connecting device for a bathtub of a forced circulation type bath according to claim 1, wherein the both opening portions are opened parallel to each other by 60 mm or more.