JPH0380905A - Circulating device of water in bathtub - Google Patents

Abstract

PURPOSE:To make it possible to use filtered clean water in a bathtub for washing a washing place and the like, only when required, by selectively sending water for filtration and circulation of a filter or for backwashing by means of two three-way valves. CONSTITUTION:A circulation port 2 and a jet nozzle 3 of a water line 4, 5, 5a, 5b are connected to a bathtub to circulate water thereof and a by-pass line 8, 8a-8c is provided in said line on the delivery side of a circulation pump 6, whereby two three-way valves 10, 11 and a filter 7 are installed in said by- pass line. And a discharge water line 12 is connected to one of the ports of the valve 10 and a spray nozzle 17 is attached to the forward end of a water line 16 connected to one of the ports of the valve 11. Further, by changing over the valves 10, 11 by means of a controller 14, the water of a bathtub is circulated through the water line, while said water being filtered, or the water is sent to the nozzle 17, while the water being filtered, or the water is reversely sent into the filter 7 and passed through the line 12.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention circulates household bath water, jets a jet stream containing air bubbles from a jet nozzle, and hits a bather with it to produce a pine surge effect, etc. This invention relates to a bathtub water circulation device.

Conventional technology Conventionally, for example, Japanese Utility Model Publication No. 59-30693, Japanese Utility Model Application Publication No. 57-60954, and Japanese Utility Model Application Publication No. 63-904
The configuration was as described in Publication No. 15, etc. To explain this with reference to FIG. 2, 21 is a bathtub, 22 is a circulation port that sucks bathtub water, 23 is a circulation pump that circulates bathtub water, and 24 and 25 are between circulation port 22 and jet nozzle 26 that spouts bathtub water. A water circuit 27 is installed in the middle of the water circuit 24 and 25 to guide the circulating bath water, and is a bathtub circulating water outlet equipped with a three-way switching valve. The circulating pump 23 was operated to take out the remaining hot water from the outlet 27, and the remaining hot water was used as water for washing the washing area, bathtub 1, etc.

Next, in FIG. 3, 28 is a water circuit for circulating bath water connected to the bathtub 29, 30 is a water circuit branched from the water circuit 28, 31 is a circulation pump, 32 is a filter, and,
Bathtub water is circulated by a circulation pump 31, and a part of the bathtub circulating water which has been filtered and cleaned by a filter 32 is taken out from a water circuit 28 and used for washing a washing area 33.

In addition, in FIGS. 4(a) and 4(b), 34 is a bathtub;
35 is a circulation pump that circulates the bathtub water, 36 is a bathtub water filter, 37 and 38 are three-way valves, 39, 40, 41 and 42 are water circuits that connect the circulation pump 35 and the filter 36 to the bathtub 34. , and a three-way valve 3 that switches the circulation of bathtub water.
It has 7.38. 43 is a bypass path, and 44 is a drainage path. The bathtub water is mainly circulated by the circulation pump 35 through water circuits 39 and 40, while in FIG. The bathtub water is filtered out, passes through the water circuit 41 and the three-way valve 37, joins with the circulating water discharged from the bathtub 34, and is sucked into the circulation pump 35.

In Fig. 4, water is passed from the circulation pump 35 through the water circuit 42, the three-way valve 37, and the filter 36, and is then discharged from the drainage channel 45 through the three-way valve 38, and the sewage produced by backwashing the filter 36. was supposed to be emitted.

Problems to be Solved by the Invention However, in the example shown in FIG. Since the grime left behind on the washed area, it was necessary to use clean water such as tap water for finishing. On the other hand, in the example of FIG. 3, the filter 32
Since we use clean water that has been filtered, it is unprecedented! Although 18 has been solved, the following new problem arises. In other words, if a jet nozzle is provided on the discharge side of the bathtub when circulating water is returned to the bathtub 29, a plurality of jet nozzles are usually provided.For example, in the case of four jet nozzles for fishing on a boat, the amount of water flowing to each of them is About 21! /min, so a total of about 801/min of bath water is circulated. By the way, the time required to filter bathtub water depends on the processing capacity of the filter 32, and when all the circulating water passes through the filter 32, the processing capacity of the filter 32 is increased to 80j! / minute, the bathtub fill amount will be 80%.
The time will be divided by 2.

For example, if the bathtub water volume is 2401, filtration of the bathtub water will be completed in about 3 minutes, but in this case,
The processing capacity of the filter 32 requires a capacity that allows water to pass through 801/min, and the filter 32 is relatively large in size.
The relationship between the water flow rate Q (17 minutes) and the filtration volume A (nf) of the water flow surface of the filter 32 is Q = (600 to 800)XA, and according to this formula, Q = 80. The minimum value of A is A = 0.1 (po), and if the cross-sectional shape of the container is circular and this surface is a filter box, the diameter will be approximately 36, which is an appropriate size for household use. It's a big thing that's hard to describe. For this reason, the size of the filter 32 is made appropriate for household use, and the filter 32 and circulation pump 3 are
1 and some of the water circuits, etc. can be housed in one box, the appropriate diameter of the filter 32 is about 15 to 200 mm, and the water flow rate at this time is about 20 mm. /minute. This is the condition assumed during the calculation described above.

If all the circulating water is passed through the filter 32, the number of jet nozzles that can be installed is controlled by the filtering capacity of the filter 32 and is limited to one.

Next, in the example shown in FIGS. 4(a) and 4(b), the filter 36 is provided in parallel with the circulation pump 35, and the bathtub water mainly circulates through the water circuits 39 and 40, with some Filter 3
6, the problem shown in the above-mentioned second example is solved. However, in this third example, the bath water is simply circulated for the purpose of filtering and backwashing the filter 36. In order to use the filtered clean bath water from this piping system, a branch part or a switching valve is provided in either the water circuit 41 or the water circuit from the three-way valve 37 to the water circuit 39. If a zero branch is installed, a separate on-off valve is required to take out clean bath water from the branch only when needed, and if a switching valve is installed, additional valves will be installed, resulting in extra equipment costs. New issues have arisen, such as the need for

The present invention solves the above-mentioned conventional problems, and in addition to using two three-way valves to switch between water flow for filtration circulation and water flow for backwashing of the filter, The purpose is to enable filtered clean bathtub water to be used only when necessary for purposes such as washing a washing area.

Means for Solving the Problems In order to achieve the above object, the present invention provides a bathtub, a circulation port provided in a perforation in the side wall of the bathtub, a circulation port for sucking bathtub water, a jet nozzle for spouting bathtub water, and a jet nozzle for spouting bathwater. a water circuit whose ends are connected to the mouth and the jet nozzle, respectively, for mainly circulating bath water; a circulation pump provided in the middle of the water circuit; and a circulation pump provided in the middle of the water circuit on the discharge side of the circulation pump. A bypass path, two three-way IIM valves provided in the middle of the bypass path, a filter provided in the bypass path between these two three-way solenoid valves, and two three-way solenoid valves perform filtration circulation. The water in the bathtub is controlled by switching between a drainage channel provided on one side of the valve through which water passes first, an injection nozzle at the tip of a water circuit separately installed on one side of the remaining valve, and the two three-way solenoid valves. Equipped with a controller that controls the bath water to be circulated through the water circuit while being filtered, to flow to the injection nozzle while being filtered, or to flow back into the filter and into the drain. It is something that

Function In the above-mentioned means, the three-way solenoid valve located before the filter in the path through which filtered circulating water passes through the filter switches the water passage for filtration and backwashing of the filter, and also switches the flow path for filtering and backwashing of the filter. The valve switches the flow of clean bathtub water that has been filtered by a filter, either returning it to the bathtub side or passing it to a spray nozzle separately installed outside the bathtub.

Embodiment Hereinafter, one embodiment of the present invention will be described with reference to the drawing of FIG. 1 is a bathtub; 2 is a circulation port installed in a hole in the side wall of the bathtub 1 to draw out bath water; 3 is a jet nozzle that is also installed in the side wall and spouts out bath water; 4.5, 5a and 5b are circulation ports 2 and a water circuit which is connected to the jet nozzle 3 and circulates the bath water; 6 is a circulation pump that is installed between the water circuits 4 and 5 and circulates the bath water; 7 is a container with sand, glass beads, or other filter material; The so-called sand filtration type filter stored, 8.8a~8
C is a bypass path provided in parallel with the water circuit 5a, and a filter 7 is connected to the bypass path. 9 is the air vent valve of the filter 7;
10 and 11 are three-way solenoid valves connected to bypass paths 8a and 8b on both sides of the filter 7.

12 is a drainage channel connected to one path of the three-way solenoid valve 10;
is a drainage ditch. 14 is a controller that is electrically connected to the circulation pump 6 and the three-way solenoid valves 10 and 11 and controls the driving thereof; 15 is electrically connected to the controller 14 so that the bather can use the bathtub containing air bubbles; a switch for a "jet filtration" operation that filters bath water with a filter 7 while operating a jet bubble operation that spouts water from a jet nozzle 3;
A switch for "backwash" operation that causes the bathtub water to flow back inside the filter 7 to clean the filter 7, and a spray nozzle 17 provided at the tip of the water circuit 16 to "spray" the filtered bathwater water. It is an operation panel containing switches, etc. water circuit 16
is connected to the three-way solenoid valve 11, and has an injection nozzle 17 at the tip.
has.

The operation of this embodiment with the above configuration will be explained.

After filling the bathtub l with water, turn on the switch for "jet filtration" operation on the operation panel 15, the circulation pump 6 is activated, and the bathtub water is sucked into the circulation pump 6 from the water circuit 4. After pressurization, the water returns to the bathtub 1 from the jet nozzle 3 via the water circuits 5, 5a and 5b. On the other hand, a three-way solenoid valve is installed so that a part of the circulating water of the water circuit 5a flows from the water circuit 5 to the water circuits 8°8a to 8C, which are bypass paths of the water circuit 5a branched at points A and B in the figure. 11 is water circuit 8b and 8
c a The three-way solenoid valve 10 is switched to allow water to flow through the water circuits 8 and 88, and the air vent valve 9 is switched to allow water to pass through the filter 7.
The air inside is removed, and the circulating water passes through a filter 7 and is filtered. At this time, the drainage channel 12 is cut off from the bypass channel 8.

Further, the water circuit 16 is also cut off from the bypass path 8C.

The circulating water filtered through this bypass path joins the circulating water that has passed through the water circuit 5a again at point B, and this circulation cycle is repeated to progress the filtration of the bathtub water and obtain clean bathwater. The flow direction of the circulating water at this time is as shown by the solid arrow in the figure. Note that a plurality of jet nozzles 3 are normally provided, and in this example, a general case of four jet nozzles 3 is provided.
Since the amount of water flowing through these units is about 20,127 minutes, a total of about 801 minutes of bath water is circulated. By the way, the time required for filtering bath water is limited by the filtering capacity of the filter 7, and in this embodiment, the bypass path in which the filter 7 is installed has a filter length of 20
The water flow rate was set to 1/min, and the remaining bath water flow rate was 601/min to the water circuit 5a. In addition, since the filtration processing capacity of the filter 7 is 201/min, the appropriate filtration time is approximately 12 minutes, assuming the bathtub filling amount is 2402, but in this example,
During jet operation, filtration is performed at the same time as the jet bubbles are ejected, so the contaminants released from the skin surface of the human body during jet operation are filtered at the same time, and even if the jet operation time is 10 minutes, the remaining time is about 2 minutes. Even if filtration is stopped at this point, the bath water will remain sufficiently clean. If you want to further maintain and promote cleanliness, simply run the "jet filtration" operation for an additional few minutes. Next, if the filtration operation is repeated many times, the filter of the filter 7 will become clogged with grime and dirt, causing the filter to become clogged. The water flow resistance of filter 7 increases, the amount of water flowing to bypass paths 8.8a to 8c decreases, and the filtration capacity of filter 7 decreases. Wash container 7. The filter 7 is washed by "backwashing" in which water is passed through the filter 7 from the opposite direction.
This is done by turning on the "backwash" operation switch on the operation panel 15, the circulation pump 6 is driven, the three-way solenoid valve 10 is switched to flow water to the water circuit 8a and the waste water 12, Another three-way solenoid valve 11 is switched to allow water to flow through the water circuits 8b and 8c, and the bathtub water circulates in the direction shown by the dashed arrow in the figure. In the bypass passage, the flow is opposite to that of the filtration time, and the water circuit 8 is cut off from the water passage, so the sewage that has been washed in the filter 7 flows from the drainage passage 12 to the drainage groove 1.
Abandoned in 3.

This "backwashing" time is several minutes, and the flow rate for "backwashing" is about half or less of the time required for filtration.
Although some of the water in the bathtub is discarded, the amount of water in the bathtub is only slightly reduced.

Note that the three-way solenoid valves 10 and 11 will malfunction if the water between the rotary part, which has a perforated water passage, and the valve seat, is clogged with dirt, etc. It is equipped with a hair catcher, etc. to catch relatively large foreign matter that gets mixed into the filter, and prevents foreign matter from getting caught in the valve parts of the three-way solenoid valves 10 and 11, and prevents foreign matter from entering the filtration vent 7 and preventing it from getting inside the filtration 7. Naturally, consideration must be given to not clogging the environment.

Next, a case where clean bath water filtered by the filter 7 is "sprayed" from the jet nozzle 17 will be described. As already mentioned in the explanation of the conventional example, the remaining hot water in the bathtub is used for the purpose of cleaning the washing area of the bathroom, etc. In this case, the water flowing out from the injection nozzle 17 has a high force, Moreover, the higher the flow rate, the stronger the cleaning power. A device that performs jet bubble operation has a large circulating pump capacity and is well suited for this purpose, but for example, if water is flowing through water circuits 8b and 8C while spraying from the injection nozzle 17, the filter Ventilation 7
A portion of the approximately 20,127 minutes of clean bathtub water that has passed through the water returns to the bathtub l side, which is undesirable because the amount of water injected from the injection nozzle 17 decreases.For this reason, in this embodiment, the " When the "jet" switch is turned on, the three-way solenoid valve 10 is switched to allow water to flow through the water circuits 8 and 88, so that the bypass path allows the circulating water to flow in the same direction as in the "jet filtration" operation, and the drain path 12 and is cut off, and the three-way solenoid valve 11 allows water to flow through the water circuits 8b and 16, and is cut off from the water circuit 8C. Then, all the filtered clean bath water is sprayed from the spray nozzle 17, and the spray water pressure at this time is about 1.
0 kg/c+1, and the flow rate is approximately 201/min of the filtration flow rate.

Effects of the Invention As is clear from the above explanation, the present invention achieves the filtration of bathtub water and the "backwashing" function of the filter using a simple piping system that employs two three-way solenoid valves for switching water passages. Furthermore, the clean bath water filtered by the filter can be sprayed from a spray nozzle other than the jet nozzle, and can be used for washing in a washing area or as water for laundry. Moreover,
This has the effect of minimizing the increase in flow resistance of circulating water in the middle of piping such as valve parts, and maximizing the lift of the circulation pump.

[Brief explanation of drawings]

Fig. 1 is a system piping diagram showing one embodiment of the bathtub water circulation device of the present invention, Fig. 2 is a waist perspective view showing a conventional example, Fig. 3 is a piping diagram of another conventional example, and Fig. 4 a FIG. 4 is a piping diagram of another conventional example. ■・・・・・・Bathtub, 4. 5.5a, 5b...
...Water circuit, 6...Circulation pump, 7...
・Filter, 10.11...Three-way solenoid valve, 14.
...Controller.

Claims (1)

[Claims] A bathtub, a circulation port provided in a hole in a side wall of the bathtub for sucking bathtub water, a jet nozzle for spouting bathwater water, and a water circuit whose ends are connected to the circulation port and the jet nozzle, respectively, and mainly circulates the bathtub water. , a circulation pump provided in the middle of the circuit, a bypass path provided in the middle of the water circuit on the discharge side of the circulation pump, and two three-way solenoid valves provided in the middle of the bypass path; A filter provided in the bypass path between the two three-way solenoid valves, and the two three-way solenoid valves,
A drainage channel provided on one side of the valve through which filtered circulating water passes first, an injection nozzle provided at the tip of a separate water circuit on one side of the remaining valve, and the two three-way solenoid valves are switched to create a bathtub. A controller that controls the bath water to circulate through the water circuit while being filtered, to flow to the injection nozzle while filtering the water, or to flow the bath water back into the filter and into the drain. Equipped with a bathtub water circulation system.