JPH06277158A - Device for connecting forced circulation piping to bathtub - Google Patents

Abstract

PURPOSE:To improve an execution property and the uniformity of hot water temperature in a bathtub by connecting a forced circulation piping to the intake side and discharge side in the same way. CONSTITUTION:A go-pipe 42 and return pipe 43 are connected to piping connecting ports 12, 24 irrespective of the directions. Also, independent flowing water path 20 is separated from a flowing water chamber by a packing for preventing an inside leak and further a screw 19 for fastening fixedly an inner tube 10 and partition wall 15 constituting these path and chamber is mounted from the rear surface. The flowing water chamber is formed in the nearly L-shaped form, and a mixing preventing projection 80 and bank-like projection part 81 are formed on the partition wall 15. Thus, while a satisfactory execution property of piping is given, the shortcircuit in the bathtub and inside and outside the bathtub connecting device is eliminated to prevent a heater having an automatic boiling-up stopping function from being stopped.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a bathtub connecting device of this type forcibly circulating piping forms a suction chamber and a discharge chamber by partitioning the inside of a metal fitting attached to the bathtub as known from Japanese Utility Model Publication No. 3-36852, and forcibly circulates. One of the pipe connection ports to the pipe was communicated with the suction chamber and the other was communicated with the discharge chamber. In addition, the connection fitting is provided with a switching means that can change the communication direction of the pipe connection port between the suction chamber and the discharge chamber, and heats the bath water sent to the heater via the suction chamber. Then, the liquid was discharged from the discharge chamber into the bath. In the event of an erroneous connection, the switching means in the fitting can be operated to change the communication directions of the pipe connection ports.

[0003]

However, in the above-mentioned conventional structure, work is performed to connect the forced circulation pipe and the connecting fitting for the purpose of returning the bath water toward the bottom of the bath to obtain a good hot water temperature distribution. In addition to the above precautions, it was necessary to confirm the presence or absence of erroneous connections, and when erroneous connections were involved, switching work of switching means was required, which made piping construction very troublesome.

Therefore, in order to improve the piping workability and to provide a bathroom connection device of forced circulation piping which is also excellent in usability, it is watertightly fixed to the mounting opening of the bathtub and the outflow pipe for discharging the bathwater out of the bathtub and A bathtub fitting having a pipe connection port connected to a forced circulation pipe consisting of a return pipe returning to the inside of the bathtub, and a water passage for independently circulating bathtub water in the pipe connection port and the opening pipe in the bathtub Was developed.

However, at this time, an inflow and outflow bathtub having a flow path having a substantially eight shape and a flow path of downward blowing are mixed with each other on the bottom surface of the bathtub, and the running water temperature of the outflow pipe for discharging the bathtub water to the outside of the bathtub is averaged in the bathtub. The temperature of the hot water flowing into the heater became higher than that of the hot water, and the temperature of the hot water flowing into the heater became high, and the heater with the automatic boiling stop function stopped before the hot water temperature in the bathtub boiled. Also, when the connection was reversed, the same result as the above description was obtained.

Therefore, according to the present invention, the flowing water returned to the bathtub does not circulate in the bathtub and flows into the heater while the hot water temperature is high, and the heater having the automatic boiling stop function stops. Provided is a bathtub connecting device for preventing forced circulation piping.

[0007]

In order to achieve the above-mentioned object, the first means for connecting the bath of the forced circulation pipe of the present invention is watertightly fixed to the mounting opening of the bath and the outflow pipe for discharging the bath water out of the bath. And forced circulation piping consisting of a return pipe returning to the bathtub,
It is equipped with a bathtub fitting having a pipe connection port for connection, and a water passage for independently circulating bath water between the pipe connection port and the opening in the bathtub. The water section and the downward opening are independent, and a substantially L-shaped wall is provided on the downward opening side so that bath water that is about to flow in and out of the opening of the water passage does not short circuit. Is.

The second means of the present invention comprises an inner cylinder concave portion and a bulkhead convex portion in order to prevent a short circuit in the bathtub connecting device between the forward side water passage portion and the return side water passage portion. The water-tight packing is provided in the substantially L-shape of the water passage and the downward opening of the eight-character shape.

Further, the third means of the present invention is such that a part of the outer circumference of the partition wall is provided so that the bath water after flowing in and out of the openings of the water passages on the outflow side and the water passage on the return side does not mix with each other to cause a short circuit. It has a configuration in which a mixing prevention protrusion is provided.

Further, the fourth means of the present invention is to form a bank in the front part of the partition wall so that the bath water after flowing in and out of the openings of the water passage on the outflow side and the water passage on the return side does not mix to cause a short circuit. It has a configuration in which a protrusion is provided.

Further, the fifth means of the present invention has a construction in which a fitting screw is attached from the back side in order to protect the watertightness of the water passage.

[0012]

In the bathtub connecting device for forced circulation piping of the present invention by the above-mentioned first means, the bath water immediately before flowing in and out of the opening of the water passage does not short circuit, and has a heater having an automatic boiling stop function. It can be prevented from stopping.

By the above-mentioned second means, the bathtub connecting device for forced circulation piping according to the present invention has an automatic boiling stop function by preventing a short circuit in the bathtub connecting device at the forward water passage and the return water passage. It is possible to prevent the heater from stopping.

In the bathtub connecting device for forced circulation piping according to the third means and the fourth means described above, the bath water after flowing in and out through the opening of the water passage portion does not cause a short circuit and has an automatic boiling stop function. It is possible to prevent the included heater from stopping.

Further, by the fifth means, the bathtub connecting device for forced circulation piping according to the present invention has a structure in which a fitting screw is attached from the back surface, whereby the watertightness of the water passage due to incorrect disassembly and assembly is protected. The operations of the first, second, third and fourth means can be made more reliable.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath connection device for forced circulation piping according to the present invention will be described in more detail with reference to a specific embodiment shown in the accompanying drawings.

FIG. 1 shows an embodiment of the present invention. FIG. 2 is a view of the cross section XY of FIG. 1 as seen from the front (note that the cross section AA′-O′-OB in the figure is shown in FIG. 1).

FIG. 3 shows a view as seen from the direction of arrow C with the filter holding case 32 of FIG. 1 removed.

A mounting opening 2 is formed in the lower part of the bathtub side wall 1 near the bottom surface 1a, and a rear case 4 is applied from the outside of the bathtub side wall 1 through a watertight packing 3 for preventing water leakage, and from the inside. The fixing case 5 is fastened with the screw portion 6 and fixed so as to hold the side wall of the bathtub. First, the outer peripheral step 16 of the partition wall 15 is brought into contact with the outer peripheral step 14 on the front surface of the inner cylinder 10.
A watertight packing 70 (preferably made of EPDM) for preventing internal leakage is put in the internal partition groove 21a of the partition wall 1
5 is fastened and fixed to the screw hole 18 of the support protrusion 17 by the screw 19 (the screw 19 preferably has a screw head having a shape outside the JIS standard so that it cannot be disassembled with a JIS standard tightening tool, such as a torque spout). Further partition 1
An O-ring 9 for watertightness is attached to the groove 8 of the inner cylinder 10 unitized with 5, and is inserted into the protruding cylinder 7 protruding from the rear case 4. Then, the front outer peripheral end 10a is brought into contact with the outer periphery 5a of the fixed case 5, and the partition wall 15 and the unitized inner cylinder 10 are fastened and fixed to the screw holes 51 of the support protrusions 50 of the fixed case 5 with the screws 52. One of the water passages 1 is formed by fitting the fixed case 5, the partition wall 15 and the unitized inner cylinder 10 together.
1 is formed and water is passed through the water passage 13. The partition wall 15 has a substantially C-shaped water passage 20 formed by an inner partition wall 21, has an opening 22 of an outer peripheral wall 16, and communicates with another water passage 23 formed by the inner cylinder 10 and the rear case 4. The water passage 23 also communicates with the pipe connection port 24 of the rear case 4. The front surface 25 of the partition wall 15 has a mixing prevention projection 80 and a bank-side projection 81 to form a water passage chamber 27 having an opening 26 between the partition wall 15, the internal partition wall 21, and the outer peripheral wall 16. The partition wall 15 is provided with a support protrusion 28, and a screw 30 is fastened to the screw hole 29 to fix the filter holding case 32. The filter holding case 32 includes filters 34, 35 for filtering dirt in bath water and an outer peripheral wall 36.
In front of the outer wall 36
Contacts the outer circumference 39 of the inner cylinder 10. Then, between the filter holding case 32 and the front surface 25, the water flow chambers 33, 40, 4
Make one The filter 38 has a mesh that can remove dirt and hair of the human body that pollutes bath water, and is fixed to the filter holding case 32 by welding or the like. The forward pipe 4 as a forced circulation pipe is provided at the pipe connection ports 12 and 24 of the rear case 4.
2. Connect the return pipe 43 in a more watertight manner such as brazing. Although not shown, the outflow pipe 42 and the return pipe 43 are circulated outside the bathtub through a pump for forced circulation and a heater for additional cooking to remove dirt and heat additional heating when the water is cooled.

On the basis of the above construction, when the bath water is circulated while circulating the circulating pump to filter the bath water for additional heating after cooling the hot water, the bath water is filtered through the filters 35 and 38 to remove dirt. While flowing into the water passages 40 and 41.
Then, these inflow waters pass through the water passage 20 from the opening 22 and flow out to the outflow pipe 42 from the water passage 23. The bath water heated and heated by the heater enters the water passage 11 from the return pipe 43, enters the water passage chamber 27 from the water passage 13 and goes straight to the opening 26 and the filter 34 facing the opening 26. Bottom 1
outflow to a. Then, the high-temperature effluent, which has been heated and heated, is widely diffused on the bottom surface 1a and then sequentially floats upward. The high-temperature effluent does not collide with the human body from the side and is not accompanied by heat, and is preferable as a circulating flow of bath water, and effectively agitates the bath water to eliminate the unevenness of the hot water temperature due to the difference in water level between the upper and lower sides . On the other hand, the hot water on the upper side is sucked and guided toward the filters 35 and 38, so that the region where the flow of water from the filter 34 comes into contact with and intersects with the flow can be controlled to be small.

Therefore, in the conventional structure, when the bath water heated and heated by the heater enters the water passage 11 from the return pipe 43 and enters the water chamber 27 from the water inlet 13, the volume is the smallest and the water pressure is The opening 26 opens from the highest water passage chamber end 27a to the water passage chamber 40.
It flows out directly without passing through the water, is guided through the opening 22 and is guided through the water passage 20 without being circulated in the bathtub.
In the present invention, as shown in FIG. 2, what has flowed out to No. 2 is a substantially L-shaped 70a, so that from the water passage chamber end 27a having the smallest volume and the highest water pressure to the water passage chamber 40. The bath water, which does not flow out directly through the opening 26 and is heated by the heater, is not introduced into the opening 22 by suction.
Then, the temperature of the flowing hot water flowing into the opening 22 becomes lower than the temperature of the hot water in the bathtub, and the temperature of the flowing hot water flowing into the heater becomes lower, which has an automatic boiling stop function before the boiling water temperature rises in the bathtub. The heater will not stop.

In the conventional construction, the bath water, which is heated by the heater and heated, enters the water passage 11 and the water passage 13 is formed.
When entering the water passage chamber 27 from the water passage chamber 27, the bath water soaks from the water passage chamber 27 into the inner partition wall groove 21a and is sucked and guided to the water passage 20 through the inner partition wall 21. In the product of the present invention, as shown in FIG. 2, the water-tight packing 70 is provided in the inner partition groove 21a, and the water passage 27 and the water passage 20 are completely independent. The bath water heated and heated by the heater is not guided to the water passage 20 by suction and the heater having the automatic boiling stop function does not stop before the hot water temperature in the bath boils.

Further, in the conventional structure, when the bath water heated and heated by the heater flows through the opening 26 to the filter 34, it is sucked and guided to the opening 22 by the Coanda effect and is not circulated in the bath passage. In the present invention, as shown in FIG. 3, what has flowed through the pipe 20 and flowed out to the outflow pipe 42 is heated by a heater by the mixing prevention projection 80 and the bank-side projection 81 provided on the front surface 25 of the partition wall 15. The heated bath water is
When flowing into the filter 34 through the opening 26, the mixing prevention protrusion 80, the bank-side protrusion 81, and the filter holding case 32
The water passage 33 is formed between the front surface 37 and the front surface 37, and the bath water heated and heated by the heater is not guided to the opening 22 by suction. Then, the temperature of the flowing hot water flowing into the opening 22 becomes lower than the temperature of the hot water in the bathtub, and further the temperature of the flowing hot water flowing into the heater becomes lower, and similar to the above, the boiling water temperature in the bathtub is automatically boiled before boiling. The heater with the stop function does not stop.

Further, the outgoing pipe 42 and the return pipe 43 are connected by the pipe 1
Even when the reverse connection is made with respect to Nos. 2 and 24, the running water discharged from the opening 22 into the pipe is not sucked and guided to the opening 26 by the Counder effect, and the same result as above is obtained.

Further, in order to improve the reliability of the watertight packing 70 for preventing internal leakage, the screw 19 for fastening and fixing the inner cylinder 10 and the partition wall 15 is attached from the back surface, and therefore the watertight packing 70 for preventing internal leakage is provided. The inner cylinder 10 and the partition wall 15 that are fastened to each other are unitized, and when disassembling the bathtub connecting device of the forced circulation pipe again, the filter holding case 32 is removed and the unitized inner cylinder 10 and the partition wall 15 are removed. Since the procedure is to remove the fixed case 5, the watertight packing 7 prevents internal leakage due to disassembly and assembly.
The deterioration of 0 is prevented and the reliability of watertightness is further enhanced. Therefore, it is less likely that the heater with the automatic boiling stop function will stop before the temperature of the hot water in the bathtub has boiled. Further, it is more effective if the screw head of the screw 19 is formed into a shape outside the JIS standard so that it cannot be disassembled with a JIS standard tightening tool.

[0026]

As is apparent from the above description, according to the first aspect of the device for connecting a bath of forced circulation pipes of the present invention, the bath water on the verge of flowing in and out of the opening of the water passage does not cause a short circuit. It is possible to prevent the heater having the automatic boiling stop function from stopping.

Further, according to claim 2 of the present invention, a short circuit in the bathtub connecting device of the forward side water passage portion and the return side water passage portion is prevented, and the heater having the automatic boiling stop function stops. Can be prevented.

Further, in claims 3 and 4 of the present invention,
It is possible to prevent the bath water after flowing in and out through the opening of the water passage portion from short-circuiting and stopping the heater having the automatic boiling stop function.

Further, according to a fifth aspect of the present invention, since the fitting screw is attached from the rear surface, erroneous disassembly and assembly are prevented, and the watertightness of the water passage is protected. The action of 4 can be made more reliable.

[Brief description of drawings]

FIG. 1 is a sectional view of a bathtub connecting device for forced circulation piping according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XY of FIG.

FIG. 3 is a front view when the filter holding case of FIG. 1 is removed and viewed.

[Explanation of symbols]

 2 Mounting openings 4 Rear case 5 Fixed case 10 Inner cylinder 11, 20, 23 Water passage 12, 24 Pipe connection port 15 Partition 21 Internal partition 21a Internal partition groove 27, 33, 40, 41 Water chamber 32 Filter holding case 34, 35, 38 Filter 42 Forward pipe 43 Return pipe 70 Watertight packing that prevents internal leakage 80 Mixing prevention protrusion 81 Levee protrusion

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

Claims (5)

[Claims] 1. A forced circulation pipe which is watertightly fixed to a mounting opening of a bathtub and which comprises a going pipe for sending the bath water out of the bath and a return pipe for returning the bath water into the bath, and a bathtub fitting having a pipe connection port for connection. , A water passage that independently circulates bath water between the pipe connection port and the opening in the bathtub is provided, an opening composed of an inner cylinder and a partition is provided, and the inner cylinder concave portion and the partition convex portion have a substantially octagonal shape. The water passage and the downward opening are independent, and a substantially L-shaped wall is provided on the downward opening side to prevent short circuit of the bath water that is about to flow in and out of the opening of the water passage. Bathtub connection device. 2. A substantially octagonal water passage formed by an inner cylinder concave portion and a partition wall convex portion and facing downward in order to prevent a short circuit in the bathtub connecting device between the outward side water passage portion and the return side water passage portion. The bathtub connecting device for forced circulation piping according to claim 1, wherein a watertight packing is provided in a substantially L-shaped opening. 3. A mixing prevention protrusion is provided on a part of the outer periphery of the partition wall so that the bath water flowing in and out of the openings of the water passages on the upstream side and the water passage on the return side do not mix to cause a short circuit. The bathtub connection device for forced circulation piping according to claim 1 or 2. 4. A bank-like projection is provided on the front of the partition wall so that the bath water flowing in and out of the openings of the water passage on the outgoing side and the water passage on the return side do not mix to cause a short circuit. The bathtub connection device for forced circulation piping according to claim 2 or 3. 5. The bathtub connecting device for forced circulation piping according to claim 1, claim 2, claim 3 or claim 4, wherein a fitting screw is attached from the back side in order to protect the watertightness of the water passage.