JPH0427526Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a bath device equipped with a filtration device and an ozone sterilization device, and in particular prevents water from entering the ozone generator from the ozone mixing ejector. The present invention relates to a bath device equipped with an economical filtration device and an ozone sterilization device that reduce electric energy.

(Prior Art) FIG. 2 shows a water circuit diagram of a bath system equipped with a conventional filtration device and an ozone sterilization device. In Fig. 2, 1 is a bathtub, 2 is a circulation path, 2a is an inhalation path, and 2b
is a discharge path, 3 is a circulation pump, 4 is a filtration sterilization circuit,
4a is a primary side circuit, 4b is a secondary side circuit, 4c is a backwash bypass circuit, 4d is a drainage channel, 5 is a filter,
6 is an ozone generator, 7 is an ejector, 8 is an ozone reaction tower, 9 is a primary side directional control valve, and 10 is a secondary side directional control valve.

In this conventional bubble bath equipped with a filtration device and an ozone sterilization device, at the time of backwashing, bath water is sucked from the bathtub 1 as backwash water through the suction path 2a and into the circulation pump 3, and from the circulation pump 3 to the discharge path 2b, the primary Side circuit 4
a. Bypass circuit 4c, secondary side directional control valve 10,
The ozone reaction tower 8, the ejector 7, the filter 5, the primary side directional control valve 9, and the drainage channel 4d are used to discharge the water to the outside.

(Problem to be solved by the invention) According to the above conventional example, backwash water filters through the ejector 7 in the opposite direction during backwashing, so there is a risk that the backwash water will enter the ozone generator 6 from the ejector 7. be. Furthermore, even when performing sterilization and purification operation, it is necessary to drive the circulation pump 3 with a large flow rate, which wastes electric energy.

The present invention was developed in consideration of the above circumstances, and is an economical filtration device that prevents water from entering the ozone generator from the ozone mixing ejector and reduces electric energy. Another object of the present invention is to provide a bath device equipped with an ozone sterilization device.

(Means for Solving the Problems) A bath device equipped with a filtration device and an ozone sterilization device according to the present invention includes a circulation pump interposed in a circulation path connected to a bathtub, and a filtration sterilization circuit connected to the circulation pump in the bathtub. A filtration device and an ozone sterilization device are connected in parallel, and a sterilization and purification operation pump, a directional control valve, a filter, an ozone mixing ejector, and an ozone reaction tower are interposed in series in a filtration and sterilization circuit. In the bath system equipped with this system, the sterilization and purification operation pump is connected to the upstream side of the check valve installed on the suction side of the circulation pump, and the ozone reaction tower is connected to the downstream side of the check valve on the suction side of the circulation pump. The directional control valve selectively connects the filter to the discharge side of the pump for sterilization and purification operation and a drainage channel that communicates with the outside, and a bypass circuit for backwashing is installed in the middle part of the filtration and sterilization circuit that connects the filter and the ejector. The discharge port of the circulation pump is connected through the backwashing bypass circuit, and an on-off valve that is opened during backwashing is interposed in this backwashing bypass circuit.

(Function) According to the present invention, during sterilization and purification operation, if the circulation pump is stopped and the sterilization and purification operation pump is driven, the bath water flows through the filter and is purified, and then ozone is removed by the ozone reaction tower. is mixed in and sterilized. Also, during backwashing, the directional control valve is switched to connect the filter to the drain side, and
The on-off valve is opened. As a result, a portion of the water discharged from the circulation pump passes through the backwash bypass circuit as backwash water, is divided into the filter side and the ejector side in the middle part of the filtration sterilization circuit, and the water diverted to the ejector side. flows forward through the ejector, passes through the ozone reaction tower, and joins the circulation path. Therefore, the water flow inside the ejector is always in the forward direction, and there is no risk of water entering the ozone generator from the ejector during backwashing.

(Example) Hereinafter, the present invention will be specifically explained based on illustrated examples.

FIG. 1 shows a water circuit diagram of a bath system equipped with a filtration device and an ozone sterilization device according to an embodiment of the present invention. In Figure 1, 1 is a bathtub, 2 is a circulation path, 2
a is a suction path, 2b is a discharge path, 3 is a circulation pump, 4
is a filtration sterilization circuit, 4a is a primary circuit, 4b is a secondary circuit, 4d is a drainage channel, 4e is an intermediate section, 4f is a backwash bypass circuit, 5 is a filter, 6 is an ozone generator, 7 is an ejector , 8 is an ozone reaction tower, 9 is a directional control valve, 11 is an on-off valve, and 12' is a pump for sterilization and purification operation. 14 is a check valve.

According to this embodiment, during sterilization and purification operation, the circulation pump 3 is stopped and the pump 1 for sterilization and purification operation is stopped.
2'. Then, the bath water flows from the upstream side of the check valve 14 in the suction path 2a to the primary side circuit 4a, the directional control valve 9, the filter 5, the ejector 7, the ozone reaction tower 8, and the downstream side of the check valve 14 in the suction path 2a. flow,
Sterilized and purified. During backwashing, the direction control valve 9 is switched to connect the filter 5 to the drain channel 4d side, and the on-off valve 11 is opened. As a result, a portion of the water discharged from the circulation pump 3 passes through the backwash bypass circuit 4f as backwash water, is divided into the filter 5 side and the ejector 7 side at the intermediate portion 4e of the filtration sterilization circuit 4, and is then diverted to the ejector 7 side. The water diverted to the 7 side flows in the forward direction within the ejector 7, passes through the ozone reaction tower 8, and is merged into the suction passage 2a. Therefore, the water flow inside the ejector 7 is always in the forward direction.
There is no possibility that water will enter the ozone generator 6 from the ejector 7 during backwashing. Note that the backwash water diverted to the filter 5 side flows back through the filter 5 and washes the filter medium therein, and then is discharged to the outside via the directional control valve 9 and the drain channel 4d.

Moreover, by continuing to supply ozone even during backwashing, the sterilization operation can be continued, and the sterilization efficiency can be increased.

Incidentally, when sterilization using ozone is performed as in this embodiment, there is a problem that residual ozone is precipitated from the bathtub water and a strong ozone odor remains. In order to solve this problem, as shown in FIG. Mixing and mixing of aromatic air by opening the on-off valve 13 are alternately performed, or operation of the circulation pump 3 and on-off valve 1 for a predetermined period of time after the end of the ozone sterilization operation.
What is necessary is to open the valve in step 3.

(Effects of the invention) As described above, according to the invention, the circulation pump can be stopped during sterilization and purification operation, which is economical as it eliminates wasted electrical energy. Since water flows in the forward direction, water can be prevented from entering the ozone generator from the ejector during backwashing, and the sterilization efficiency can be increased by continuing to supply ozone and continue the sterilization operation.

[Brief explanation of the drawing]

FIG. 1 is a water circuit diagram showing an embodiment of the present invention, and FIG. 2 is a water circuit diagram of a conventional example. 1... Bathtub, 2... Circulation path, 3... Circulation pump, 4... Filtration sterilization circuit, 5... Filter, 7...
Ejector, 8...Ozone reaction tower, 9...Direction control valve, 11...Opening/closing valve, 12'...Pump for sterilization and purification operation, 14...Check valve, 4a...Primary side circuit,
4d...drainage channel, 4f...bypass passage for backwashing.

Claims (1)

[Scope of utility model registration request] A circulation pump is interposed in the circulation path connected to the bathtub, a filtration sterilization circuit is connected to the circulation pump in parallel with the bathtub, and the filtration sterilization circuit is sequentially provided with a sterilization and purification operation pump, a directional control valve, a filter, In a bath system equipped with a filtration device and an ozone sterilization device in which an ejector for mixing ozone and an ozone reaction tower are interposed in series, the pump for sterilization and purification operation is upstream of the check valve installed on the suction side of the circulation pump. At the same time, the ozone reaction tower is connected to the downstream side of the check valve on the suction side of the circulation pump, and the directional control valve switches the filter to the discharge side of the pump for sterilization and purification operation and a drainage channel that communicates with the outside. The discharge port of the circulation pump is connected to the intermediate part of the filtration sterilization circuit that connects the filter and the ejector via a backwash bypass circuit, and the backwash bypass circuit has an opening/closing valve that is opened during backwashing. A bath device characterized by having a valve interposed therein.