JPH0332709A - Device for circulating bathwater - Google Patents

Abstract

PURPOSE:To heat and melt the part of a filter medium occasionally frozen in winter in a vessel and to rapidly resume the water circulation by providing an air vent valve to a filter so that the valve is brought into contact with the circulating water filtered by the medium. CONSTITUTION:A bathtub 1, a water circuit 3 for circulating bathwater, a circulating pump 6 set in the circuit 3 and a filter 8 are provided. The filter 8 is provided with a water passage 8b passing through the filter medium 8f and a bypass 2 passage 8c for the water passage 8b. The air vent valve 13 is provided to the filter 8 so that the valve is brought into contact with the circulating water filtered by the medium 8f. Namely, even if the medium is frozen in winter after the bathwater is discharged, the circulating water passes through the bypass in the filter, air is discharged from the inside of the medium, and the bathtub is filled with water. The frozen part is heated and melted by the hot water introduced into the medium, and water circulation is rapidly resumed.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is designed to eliminate the environment in which household bathtub water is contaminated by using a jet stream, etc., and bacteria have grown in it. This invention relates to a bathtub water circulation device.

BACKGROUND ART FIG. 4 is a system diagram showing a conventional example, in which the circulating water inlets and outlets 2 and 6 of a bathtub l are piped with a water circuit 3, and a circulation pump 4 and a filter 5 are provided in the middle to circulate the bathwater. As a result, the filter 5 filters the pollutants discharged from the human body floating in the bath water, and the sterilizing liquid stored in the sterilizing tank 27 is injected into the water circuit 3 to remove the pollutants. It kills bacteria that breed as a source of nutrients.

Further, FIG. 5 shows a sectional view of the filter 5, in which circulating water enters the filtration chamber 5a from the arrow IN, is filtered by the filter 5b, and exits from the arrow OUT. When filling the bathtub 1 with water, air enters the filtration chamber 5a, and in equipment for commercial use, the piping of the water circuit 3 has uneven parts in the middle, so even when the bathtub water is drained, it does not fit into the depressions. There is residual water, and the air in the water circuit 3 cannot be released when filling the bathtub 1 next time, so water cannot be filled in the water circuit, and the air in the circulation pump 4 is not sufficiently vented, so the bathtub 1 cannot be filled with water. However, recirculation operation becomes impossible due to air trapping in the circulation pump 4, etc. To prevent this, an air vent valve 8 is provided in the passage of the filter 5 after the water passes through the filter 5b.

The air vent valve 8 has a small air discharge port and is closed by water pressure, so if the valve seat is clogged with dirt or the like, it tends to leak, so it comes into contact with clean circulating water after filtering through the filtration filter 5b. However, for commercial use, maintenance is always performed, clogging is rare, and sufficient consideration is given to freezing, so troubles related to the filter 5 are rare.

Problems to be Solved by the Invention However, when the above-mentioned system is applied to home use, general users cannot be expected to perform sufficient daily maintenance, especially for equipment as difficult as this one. When the bathtub water is drained at times, etc., the filtration filter has strong water absorption, so it freezes before it dries sufficiently, and the effect is the same as that caused by inserting a closing part in a part of the water circuit 3. ,
The air in the water circuit 3 cannot escape, making it impossible for bathtub water to enter the water circuit 3, and the circulation of the bathtub water becoming impossible due to air trapping in the circulation pump 4. Additionally, as the filter becomes clogged, the natural drop in the water level of the bathtub reduces the speed at which the air in the water circuit 3 is removed from the air bleed valve, which delays air bleed in the circulation pump 4 and reduces the operating time during which recirculation is possible. Issues such as delays occurred.

The present invention provides a bathtub water circulation device that solves the above problems.

Means for Solving the Problems In order to solve the above problems, a bathtub water circulation device of the present invention includes a bathtub, a water circuit for circulating bathtub water, a circulation pump and a filter provided in the water circuit, The filter has a water passage section that passes through the filter and a bypass path for the water passage section, and is provided with an air bleed valve so as to be in contact with the circulating water filtered by the filter.

Function: According to the present invention, contaminants contained in bath water are filtered by a filter provided in a water circuit that circulates bath water. Even if the filter becomes clogged with use, or if the filter freezes after draining the bathtub water in the winter, circulating water will pass through the bypass path inside the filter and air will be removed from the inside of the filter. is drained and the bathtub is filled with water. Therefore, the time for removing air from the filter is shortened.
Even when the filtration filter freezes, the hot water that enters the filter heats and thaws the frozen part, filling the filtration chamber at the outer periphery of the filtration filter with water, allowing quick recirculation operation after filling the bathtub with water. .

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 2, the bathtub water that comes out from the circulating water outlet 2 at the bottom of the bathtub 1 passes through the circulation channel 3 to the circulation device 4 shown in FIG. 5 shows a system for returning to bathtub l.

Next, the circulation device shown in FIG. 1 will be explained. Circulating water first enters from the inlet 6a of the I-ring pump 6, is pressurized, and then flows to the outlet 6b.
The water flows out from the filtration chamber 8b and enters the water passage part 8a of the filter 8 as a flow A, and part of it enters the filtration chamber 8b as a flow B, where it is filtered by the outer circumference of the filtration filter 8f (spool filter). It is guided from the hollow part inside the center to the bottom filter outlet 8d. On the other hand, a part of the flow A passes through the bypass passage 8C as a flow C, merges with the flow at the filter outlet 8d again, becomes a flow D, and returns to the bathtub 1. At this time, the amounts of circulating water in streams A and D are exactly the same, and are of course equal to the sum of streams B and C. Bypass flow C
The ratio between the flow resistance and the flow B of the filter water passage section is determined by the water flow resistance of each water passage section (for example, on the flow B side, the ratio is mainly due to the filtration filter 8f
In the case of the bypass passage 8C, it can be set variously depending on the cross-sectional area of the passageway.

There is a sterilizing liquid supply circuit completely separate from the circulation waterway 3, and the vibrator 19a is supplied from the top of the sterilizing tank 9 that houses the sterilizer 19a.
The liquid is suctioned by the pump 10 through the pipe llb, pressurized by the pipe llb, and supplied from the upper part of the filter 8 to the filtration chamber 8b. In the figure, 13 is an air bleed valve for the filtration chamber 8b, 14 is a controller for this device, and 15 is a case for storing these I products.

Next, the operation of the above configuration will be explained.

When the bathtub l is filled with hot water and the operation switch is turned on at the bathroom operating unit (not shown), the controller 14 receives a signal from the operating unit and the circulation pump 6 is driven, the bathtub water passes through the filter 8. A part of the passage is filtered and returned to the bathtub l from the jet nozzle 5.
It is sprayed vigorously inside the body, giving appropriate stimulation to the surface of the human body. At this time, the aged skin tissue on the body surface is exfoliated and released as grime into the bath water. In addition, bacteria in the air in the bathroom or on the surface of the human body may enter the bath water and increase when the bath water temperature and growth conditions such as the aforementioned grime are met. Alternatively, by automatic control, while operating the circulation pump 6, the pump lO is operated for a certain period of time to inject the sterilizing liquid 9a into the bath water, killing the sterilization and removing dead bacteria and aged skin tissue mixed into the bath water. The filter 8f removes such contaminants to keep the bathtub water clean at all times.

FIG. 3 shows a plan view of the water passage portion 8a of the filter 8.

In the figure, the circulating water flows in through the IN arrow and flows out through the OUT arrow, but the inflowing flow A shown in Figure 1 enters the filtration chamber 8b through the port 8d via the passage 8g, and enters the filtration chamber 8b through the port 8d. After passing through 8f, the boat 8e leads to passage 8h.

On the other hand, the L-shaped passage represents the aforementioned bypass passage 8C. In order to prevent the filter 9 from clogging for as long as possible, it is possible to increase the filtration capacity, which is related to the water contact area and thickness. Appropriate settings must be made in relation to capacity and maintenance period. In this example, a thread-wound filter is used, and unlike filters such as paper filters and foamed resins, which have effective filtration only on the surface area, they also have filtration performance in the thickness direction, and therefore have the same winding outer diameter. It also has excellent filtration performance. In addition, bypass path 8
C is installed at the same water level as 8d and 8e, and when the bathtub water is drained, the circulating water in the passage is drained from the port 8d, and no residual water remains.As mentioned above, when the filter 8f becomes clogged, the bathtub This also creates resistance to the passage of air to remove air during filling, and in extreme cases, freezing may prevent air from passing through at all. The bypass passage 8c becomes an effective passage for air and circulating water in such a case, and has the function of quickly performing a recirculation operation after filling the bathtub with water.

Next, the difference between the amount of circulating water for generating a jet flow and the amount of circulating water for circulating filtration will be explained.

The total amount of circulating water is set to a flow rate that makes the jet stream of the bathtub l comfortable, so it becomes a considerable flow rate. For example, when the number of jet nozzles 5 installed is 4, 60 to 80 d
%/sin, and this flow rate is
It is too much to circulate and filter bathtub water of about 200 to 300 d%, which is the capacity of 1. Normally, the flow rate of circulation filtration is about one-tenth of the bath water volume, and for home use it is about 20 to 300 d%.
30 d n (/win) is sufficient, and is satisfied with approximately one-half or less of the circulating flow rate for the jet stream.In this way, the circulating flow rate necessary to generate the jet stream and the circulating filtration of the bath water are The amount of circulating water required to generate a jet flow is different.If the circulating filtration flow rate is adjusted to the flow rate required to generate a jet flow, the circulating filtration flow rate will be more than double, and the water flow resistance of the filtration filter 8f will be approximately Therefore, it is necessary to increase the discharge capacity of the circulation pump 6 or increase the filtration area of the filtration filter 8f, which both increase the size of the equipment and increase unnecessary equipment costs. This results in unfavorable results for household use, such as increased maintenance costs and increased space occupied by the equipment.

Therefore, in the present invention, in order to function the two functions of jet flow and circulation filtration most rationally, a bypass passage 8c is provided in the water passage portion 8a of the circulating water filter 8, as described above. . In addition, since approximately one-half of the circulating water passes through the bypass passage 8C, the circulating filtration capacity does not decrease, and the circulation flow rate of bathtub water increases by the amount of circulating water passing through the bypass passage 8c. Just have more than you need,
Circulation filtration is performed reliably only in the required amount, and the installation of the bypass passage 8C has no relation to the filtration performance6. Effects of the Invention As described above, in the present invention, the entire circulating flow of bathtub water is Generate a powerful flow with a large flow rate as a jet stream, filter approximately 1/2 of the circulating flow with a filtration filter, and filter the other 2
The circulating flow of 1/1 is circulated as a bypass flow through a bypass path that does not pass through a filtration filter. This bypass flow is used when the filtration filter freezes and becomes clogged after long-term use or in the winter, resulting in increased water flow resistance. It fills the bathtub with water quickly, and by the time the bathtub is filled with water, it is already possible to recirculate the water in the bathtub, making it easy for even general users who do not fully understand the functions of the equipment for home use to use this type of equipment. be.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the main parts of a bathtub water circulation device that is an embodiment of the present invention, FIG. 2 is a diagram of its overall structure, and FIG. 3 is a cross-sectional view of the main parts of the filter shown in FIG. FIG. 4 is an overall configuration diagram of a conventional bathtub water circulation device, and FIG. 5 is a sectional view of its main parts. l...Bathtub, 6...Circulation pump, 8.
...Filter, 8c...Bypass path, 13
...Air bleed valve.

Claims (2)

[Claims] (1) A bathtub, a water circuit for circulating bath water, a circulation pump and a filter provided in the water circuit, and the filter includes a water passage section passing through a filtration filter and a bypass for this water passage section. 2. A bathtub water circulation device having an air vent valve provided in the filter so as to be in contact with the circulating water filtered by the filter. (2) The bathtub water circulation device according to claim (1), wherein the sterilizing liquid supplied from a tank containing the sterilizing liquid is injected into the filter.