JPS5842008Y2 - "Filtration" device for bathtub - Google Patents

Description

[Detailed description of the invention] The present invention mainly relates to a thin filtration device that is installed close to the hot water outlet leading to the boiler of a bathtub, and is designed to facilitate the removal of the device from the bathtub and the cleaning of the filter medium inside the device. Something,
Of course, it can also be used in general aquariums.

BACKGROUND ART Conventionally, a filter device for bathtubs has been devised, which is used in tropical fish tanks and the like, and utilizes the rise of air bubbles to cause a rising water flow to pass through a filter medium.

For example, the present inventor devised a bath water convection circulation filtration device as shown in FIG. 1 (registered under Utility Model Application No. 49-016275, Registration No. 1330651).

In this case, the open lower bottom is filled with a filter medium 6, and the housing with the diffuser pipe 5 in contact with the filter medium at the top is connected to the outlet port 3 from the boiler 2.
It is installed in the bathtub 1 so as to be in communication with the air pump 4, and air is sent to the diffuser pipe 5 through a hose 10 by an air pump 4.

As the hot water inside the housing rises due to the pressure feeding of air to the air diffuser 5,
As the water rises, the hot water in the bathtub passes through the filter medium 6 and is absorbed into the housing.

In this way, the light hot water heated by the boiler 2 also flows through the outlet 3 into the housing, and by this synergistic effect, dirt is filtered by the filter medium while the hot water in the bathtub passes through the filter medium.

However, in conventional filtration devices, the filter medium 6 is exposed to the bath water, and when the operation of the air pump 4 is stopped or the filtration device is taken out of the bathtub, the filtered waste is peeled off from the filter medium. I often went back to the bathtub.

Furthermore, since the bath water is allowed to pass vertically through a filter provided within the device, the shape tends to be large, and the device protrudes into the bathtub, obstructing bathing.

The present invention solves the above-mentioned disadvantages, makes the device easy to clean, and does not take up much space when installed in a bathtub.
The purpose is to obtain a thin filtration device.

~Hereinafter, the present invention will be explained with reference to drawings showing embodiments.

FIG. 2 is a longitudinal sectional side view showing the filtration device of the present invention installed in a bathtub.

As in FIG. 1, 1 is a bathtub, 2 is a boiler, 3 is an outlet, 5 is a diffuser pipe, and 6 is a filter medium.

The air diffuser 5 is connected to an air pump 4 as shown in FIG. 1, but is not shown in FIG.

7 is a check valve.

Figure 3 is an enlarged view of the filtration device, where 8 is a flat rectangular cylindrical case, 8a is the bath water outlet, which is located on the upper side of the case 8, and 8b is the bath water inlet, which is located at the bottom end of the case 8. It is.

The case 8 is divided into a front chamber 11 having an inlet 8b and a rear chamber 12 having an outlet 8a by a perforated plate 9 that partitions the inside of the case 8 into left and right sides.

The filter medium 6 is held in the rear chamber 12 in contact with the back of the perforated plate 9.

A check valve whose one side of a rectangular plate is rotatably supported is installed between the bath water inlet 8b provided at the lower end of the front chamber 11 and the diffuser pipe 5 fixed slightly above the inlet. 7 is provided.

While the filtration device is in operation, level B inside the filtration device will be higher than level A of the bathtub, as will be described later, so the height of the upper end of the device will be:
A filtration device is installed in the bathtub so that the level is sufficiently higher than Level A of a normal bathtub.

In order to mix the water coming out of the bath water outlet 8a provided in the case 8 with the hot water discharged from the outlet 3, the outlet 8a is opened relatively close to the boiling outlet 3.

Reference numeral 13 denotes a ventilated lid member attached to cover the upper end opening of the front chamber 11.

Next, to describe the effects of this device, when air is sent to the diffuser pipe 5, the air bubbles blow out from the diffuser pipe 5 and rise in the bath water in the front chamber 11. Due to the carrier up phenomenon, water flows upward in the chamber 11. occurs, and the valve 7 opens to suck the water in the bathtub into the front chamber 11 through the suction port 8b.

As the bubbles rise, the level B of the front chamber 11 within the device becomes about 106 m higher than the level of the rear chamber and the level A of the bathtub.

The rising airflow induced by the rise of the bubbles rises in the front chamber 11 in a turbulent state with a vertical component going upward and a lateral component heading toward the filter medium 6, and during that time passes through the filter medium 6 sequentially due to the lateral component. The hot water then enters the rear chamber 12, flows out from the outlet 8a into the bathtub, and mixes with the hot water entering the bathtub from the outlet 3.

As time passes, water stains and other substances adhere to the filter medium held on the porous plate 9.

When ventilation is stopped to the diffuser pipe to take out the device, there is no rising water flow, so the check valve 7 is closed, and even when the filtration device is pulled out of the bathtub, the valve 7 remains closed and the front chamber 1 is closed.
The bath water remaining in the chamber 1 always passes through the filter medium 6 and is discharged to the outside of the apparatus.

Therefore, when the entire device is taken out of the bathtub, the dirt will not come off and return to the bathtub.As mentioned above, the present invention has a thin filtration device with a flat case 8. A perforated plate with a large surface area that can be installed without interfering with bathing.9
Because the bath water that rises in the front chamber 11 due to being guided by air bubbles can be effectively filtered toward the rear chamber 12, the check valve 7 at the bottom of the device prevents the water in the case 8 from leaking when the device is taken out. This has practical effects, such as preventing dirt from flowing back into the bathtub and adhering to the filter medium 6 from returning to the bathtub, and the simple structure inside the case makes it easy to clean and change the filter medium 6. big.

[Brief explanation of drawings]

FIG. 1 is a vertical side view showing a conventional example of a filtering device for a bathtub, FIG. 2 is a vertical side view showing an embodiment of the filtering device of the present invention, and FIG. 3 is an enlarged sectional view. 1: Bathtub, 2: Boiler, 3: Discharge port, 4: Air pump,
5: Diffusion pipe, 6: Filter medium, 7: Check valve, 8: Case, 8
a: outlet, 8b: suction port, 9: perforated plate, 10: hose,
11: Front chamber, 12: Back chamber, 13: Lid material.

Claims (1)

[Scope of utility model registration request] A thin case 8 in the front and back direction, which has a water inlet 8b at the lower part of the front side and a water outlet 8a at the upper part of the rear side, is partitioned into front and rear parts by a vertical perforated plate 9 to form a front chamber 11 and a rear chamber 12. The front chamber 11 has its upper end closed with a breathable lid member 13, the rear chamber 12 has its lower end closed, and a check valve 7 is provided in the front chamber 11 immediately above the inlet port 8b. A filtering device for a bathtub, in which a diffuser pipe 5 connected to an air pump is provided immediately above the bathtub, and a plate-shaped filter medium 6 is held along the perforated plate 9 in the rear chamber 12.