JP4456345B2 - Bath water purification device - Google Patents

Description

  The present invention relates to a bath water purifier.

Bath water purifiers that circulate and take in bath water in a bathtub, purify it, and in some cases add sterilization or heating to return it to the bath water are widely used.
Although purification of bath water is mainly performed by filtration, there is a problem that the filter medium itself becomes dirty as it is used.
Therefore, it is necessary to wash the filter medium from time to time. Conventionally, the filter medium is washed by applying a water flow to the surface of the filter medium, or by so-called back-flow cleaning that forms a flow opposite to the circulation path to clean the filter medium. The filter medium was washed.

However, the dirt adhering to the filter media is mainly composed of components that fall off the human skin, sebum components, components that have changed body fluids such as sweat, and bacteria that propagate using these as nutrient sources. Since it contains a large amount, there is a problem that sufficient cleaning cannot be performed by the conventional cleaning method described above. For this reason, there is a problem that the filter medium is clogged, and the flow rate of the apparatus is reduced and the bath water is clouded.
The object of the present invention is to solve the problems of the prior art.

In order to achieve the above object, the present invention provides a bath water purifying apparatus that takes in bath water in a bathtub, circulates and circulates a circulation path, and returns it to the bathtub, in a direction opposite to the circulation path for the purification. In a bath water purification device capable of reverse cleaning, which circulates bath water to clean the inside of the device, a filtration device provided with a filter medium, a heating device that heats the bath water to a predetermined temperature, and the filter medium is washed. In order to circulate in the reverse direction the chlorine injection device capable of injecting chlorine into the bath water in the circulation path, and the bath water heated to a predetermined temperature by the heating device and injected with chlorine by the chlorine injection device. An apparatus for cleaning the filter medium by passing it through the filter medium, and a control device for periodically performing cleaning by the apparatus for cleaning, the control apparatus is a device for cleaning the filter medium, Chlorine is injected by the chlorine injector. And the bath water, is circulated for a predetermined time the reverse, after passing the filter medium, by heating the bath water above 50 ° C. by the heating device, it is recycled to the predetermined time the reverse, characterized in that And
With the above configuration, the filter medium can be washed with bath water into which chlorine has been injected for a predetermined time by reverse cleaning, and the filter medium can be washed with bath water at 50 ° C. or more into which chlorine has been injected. But it can be cleaned with high cleaning efficiency. Moreover, since this washing | cleaning is regularly performed by a control apparatus, the filter medium always wash | cleaned can be used and the high bath water purification efficiency can be maintained.

  As described above, according to the bath water purification apparatus of the present invention, there is an effect that an appropriate filter medium can be washed.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, the bath water in the bathtub T enters the bath water purifier Y through the suction port 24 by the operation of the circulation pump 20, passes through the circulation pump 20 via the hot water temperature sensor 28, and further passes through the switching valve B27. And filtered in the filtration tank 21. The heater 22 is heated to a predetermined temperature, passes through the switching valve A26, further passes through the switching valve C29, and is discharged from the discharge port 25 to the bathtub T. The circulation is repeated and purified. .
A filter medium, which is a precision filter, is placed in the filter tank 21 and bath water is filtered by the filter medium.

A chlorine injector 1 is provided between the switching valve A 26 and the discharge port 25, and is connected to the pipe 40 via the chlorine flow meter 2 and the check valve 50.
The piping 41 is provided with a chlorine concentration measuring device 3.

  FIG. 2 shows the configuration of the control device of this embodiment. The control device 30 is mainly composed of a microcomputer and controls the bath water purification device Y as a whole. The control device 30 is provided with a display unit 31 and an operation unit 32, and a user or the like inputs various commands from the operation unit 32. The display unit 31 performs various displays.

  The control device 30 performs operation control of the circulation pump 20, opening / closing control of the switching valve A 26, switching valve B 27 and switching valve C 29, and heating control of the heater 22. Moreover, the hot water temperature information from the hot water temperature sensor 28 is input.

  A chlorine injector ON / OFF control circuit 10 is connected to the control device 30, and the chlorine injector 1 is turned on and off by the chlorine injector ON / OFF control circuit 10. A chlorine injector power supply control circuit 11 is connected to the control device 30 so that the power supply of the chlorine injector 1 can be controlled.

  The control device 30 is configured to receive the chlorine concentration information from the chlorine concentration measuring device 3 and the flow rate information from the chlorine flow meter 2.

The control device 30 is configured to clean the filter medium of the filtration tank 21 at predetermined time intervals, for example, once a day.
The control device 30 switches the switching valve A26, the switching valve B27, and the switching valve C29, passes through the switching valve C29 from the circulation pump 20, passes through the heater 22 through the switching valve A26, and bath water from the reverse side of the filtration tank 21. , A circulation path returning from the switching valve B27 to the circulation pump 20 is formed, and the filter medium in the filtration tank 21 is washed by circulating the bath water in the reverse direction.

At that time, chlorine is injected into the bath water from the chlorine injector 1 to a concentration suitable for cleaning the filter medium, and heated to 50 ° C. or more by the heater 22. The filter medium is efficiently washed with the hot bath water containing chlorine.
After circulating in the reverse direction for a certain time, the switching valve B27 is switched as shown in FIG. 3 to discharge the bath water used for washing. When the draining is completed, the switching valve A26, the switching valve B27, and the switching valve C29 are used as the basis. Return to form a normal circulation path.
Further, the heating by the heater 22 is also returned to the normal temperature, and the chlorine injection is also returned to the normal mode by the chlorine injector 1.

The operation will be described with reference to FIG.
A chlorine injection command is sent from the control device 30 to the chlorine injector ON / OFF control circuit 10, and chlorine injection is started from the chlorine injector 1, and chlorine is supplied to the pipe 40 via the chlorine flow meter 2 and the check valve 50. Sent. The bath water circulates from the switching valve A26 through the heater 22, the filtration tank 21, the switching valve B27, the circulation pump 20, and the switching valve C29 (step S1).

  When a predetermined time has elapsed (step S2), the heater 22 is turned on (step S3), and the bath water is heated to 55 ° C. (step S4). Then, reverse flow cleaning is performed for a predetermined time (steps S5 and S6), and the cleaning is terminated.

As described above, in the above-described embodiment, since the filter medium is periodically cleaned with high-temperature bath water containing chlorine, the cleaning efficiency is high, and clogging of the filter medium can be prevented. Therefore, there are effects such as a decrease in the flow rate of the apparatus and the absence of cloudiness of bath water.
In addition, although what was inject | poured with the chlorine injector was shown in the said embodiment, the electrolyzed water containing the electrolytic chlorine produced | generated with the electrolytic vessel may be inject | poured. In addition, a closed circuit was used to inject chlorine and raise the temperature. Normally, chlorine was injected into a circulating pipe and discharged into the bath water of the bath, and the entire bath water and the circulation path were connected. It may be sterilized and then heated by circulating the closed circuit with bath water mixed with chlorine to be washed.

Schematic which shows one Embodiment of this invention. The block diagram which shows the control apparatus of one Embodiment of this invention. Schematic which shows the state at the time of drainage of one Embodiment of this invention. The flowchart figure which shows operation | movement of one Embodiment of this invention.

Explanation of symbols

1: Chlorine injector, 2: Chlorine flow meter, 3: Chlorine concentration meter, 10: Chlorine injector ON / OFF control circuit, 11: Chlorine injector power control circuit, 20: Circulation pump, 21: Filtration tank, 22 : Heater, 24: suction port, 25: discharge port, 26: switching valve A, 27: switching valve B, 28: hot water temperature sensor, 29: switching valve C, 30: control device, 31: display unit, 32: operation Part, 40: piping, 41: piping, 50: check valve.

Claims (1)

A bath water purifier that takes in bath water from a bathtub, circulates and purifies the circulation path, and returns the bath water to the bathtub. In the bath water purification device that can be washed,
A filtration device equipped with a filter medium;
A heating device for heating the bath water to a predetermined temperature;
A chlorine injection device capable of injecting chlorine into the bath water in the circulation path to wash the filter medium;
An apparatus for circulating the bath water heated to a predetermined temperature by the heating device and injected with chlorine by the chlorine injection device in the reverse direction and passing the filter material to wash the filter material;
A control device that periodically performs cleaning by the cleaning device,
The control device circulates the bath water into which chlorine has been injected by the chlorine injection device in the reverse direction for a predetermined time in a device for cleaning the filter material, and after passing the filter material through the filter material, bath water is heated to above 50 ° C. and allowed to circulate in a predetermined time the reverse,
A bath water purifier characterized by that.

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