JPH06343808A - Cleaning device and cleaning method for bath tub hot water - Google Patents

Abstract

PURPOSE:To smoothly and effectively remove the colloidal particulate contamination consequent on clouding of hot water. CONSTITUTION:A filter tank 7 is equipped with an ordinary filter medium bucket 9 packed with ordinary filter media 10 and a precision filter medium bucket 12 packed with precision filter media 13 and is simultaneously provided with hot water suction ports 14 and 15 for the respective filter medium buckets. A hot water suction pipe 3 is branched and the branched pipes are connected to the respective hot water suction ports via a selector valve 4. Further, this device is constituted by mounting a compressor 17. A turbidity sensor 32 senses the clouding of the hot water in case of clouding of the hot water. The selector valve 4 is then changed over to supply the hot water from the hot water suction port 15 to the tank and while the hot water is pressurized by the compressed air from the compressor 17, the hot water is precisely filtered. As a result, the three problems; an increased initial cost by the pressurizing device of the precision filter, an increased size of equipment and an increased running cost by rapid clogging of the costly filter media, are solved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub device, and more particularly to a filtering device for removing dirt in a bathtub hot water cleaning device for cleaning hot water.

[0002]

2. Description of the Related Art Recently, a bathtub hot water circulation path provided with various cleaning treatment equipment such as a filtration device for removing hot water from a hot water pipe in a bathtub by a circulation pump is circulated forcibly. A bath water purifying device has been developed in which the treated hot water is again jetted from the spout pipe into the bathtub.

In the conventional apparatus, a so-called filtration tank in which a filtration layer is formed by a granular filtration material having an adsorption power of activated stone, activated carbon, zeolite and the like and an ion exchange capacity is provided as a filtration device for removing dirt, and the dirt is removed. At the same time as filtration, it is removed by adsorption or ion exchange.

Further, in order to make the filtration of the dirt more complete and at the same time prevent the granular filter medium filled in the filtration tank from being clogged with dirt in a short period of time, a thread winding filter which can be easily replaced when dirty is provided. A loaded so-called filter tank may be arranged upstream of the filtration tank.

[0005]

Dirt in the bathtub is not limited to mere hair and dirt floating in the bathtub, but also secretions from the body, soaps, cosmetics, patches on the body such as ointment, and raw water. There are various insoluble components and other stains.

Among these stains, large stains having a particle size of 10 ^-6 or more can be filtered without problems due to the filtering ability of the filter layer of the wound filter or the granular filter material, and extremely fine stains or particles having a particle size of 10 ^-9 or less can be dissolved. The stains can be removed by the adsorption power of the granular filter material, the ion exchange capacity, and the like.

However, in the conventional apparatus, the particle size 10 ^-9 to 10 formed by aggregating the insoluble components in these stains
^{-6 It} was difficult to remove the dirt from the colloidal particles, and when a large amount of the dirt that became the colloidal particles was dispersed in the hot water, the hot water became cloudy.

[0008] This is because if a filter material with a fine mesh is used, the filter material will be immediately clogged and the filter material must be replaced frequently, and it will give a great resistance to the flow of the hot water, so that the amount of circulating hot water will be small. This is because the conventional apparatus uses a relatively coarse mesh filter medium because it has a poor cleaning ability, and it does not have the ability to remove the dirt on the colloidal particles.

Contamination of the colloidal particles can be removed as the filter medium is clogged as the device is operated. However, if it is expected to filter due to the clogging of the filter medium, there is no hot water until the filter medium is clogged. It was very uncomfortable for the bather who had to put up with the cloudiness.

Therefore, in order to positively remove the dirt of the colloidal particles and prevent the hot water from becoming cloudy, it is necessary to provide a microfiltration device using a microfiltration material such as a hollow fiber or a high-density sintered body as the filtration material. is there.

However, when a microfiltration device is provided, hot water cannot be circulated by an ordinary circulation pump due to the resistance of the filter medium, so a special pressurizing device is required, and an area for arranging the microfiltration tank is also required, which makes the device large. It will be expensive.

Further, the precision filter medium is clogged immediately to filter even a very fine dirt, and expensive filter medium must be frequently replaced, so that it is expensive and at the same time, it takes time and trouble to replace it. It is difficult to maintain because the device has to be stopped at that time.

The present invention solves the above-mentioned drawbacks of the prior art and completely removes the dirt of colloidal particles even at the initial stage of operation when the filter medium is not clogged, and is small in size, low in equipment cost, and easy to maintain. It is an object of the present invention to provide a device that does not require running costs.

[0014]

[Means for Solving the Problems] That is, the present invention circulates hot water in a bathtub provided with various cleaning equipment such as a filtration device for drawing hot water in a bathtub from a hot water pipe by a circulation pump to remove dirt. In a bath water purifying device that forcibly circulates through a channel and jets the purified hot water again into the bathtub from a spout tube, the filtering device is a removable filter-equipped normal filter medium bucket. An ordinary and precise double filtration layer is formed by the precision filtration medium bucket filled with the precision filtration medium, and a suction pipe connected through a switching valve is connected via a switching valve to supply hot water for filtration to each filtration layer. A bathtub hot water cleaning device, characterized in that the sprue is a filtration tank provided separately for normal filtration and microfiltration and provided with a pressurizing device for pressurizing the inside of the tank. Yes, bathtub Yusei In the water vaporizer, the hot water inlet of the filtration tank is switched by automatically switching the switching valve based on the turbidity of the hot water detected by the turbidity sensor under the control of the control device. A method for cleaning hot water in a bathtub, which comprises supplying a hot water inlet for microfiltration to a filtration layer and performing microfiltration with a microfiltration medium in addition to normal filtration with a regular filtration medium under the operation of a pressurizing device. .

[0015]

The present invention is constructed as described above, and hot water is normally supplied to the filtration tank from the suction port for filtration by switching the switching valve, and the switching valve is switched only when the hot water becomes cloudy. The hot water is supplied from the hot water inlet for microfiltration.

As a result, the dirt is usually removed by the ordinary filtration with the ordinary filter medium as in the conventional case, and when the hot water becomes cloudy, the fine filtration with the fine filter medium is performed in addition to the ordinary filtration. When the white turbidity disappears, the switching valve is switched again so that the hot water is supplied from the hot water inlet for normal filtration and only normal filtration is performed.

Therefore, since the microfiltration with the microfiltration material is limited to when the hot water becomes cloudy, the microfiltration material does not immediately become clogged, and when the microfiltration is completed, it is taken out from the tank and subjected to normal filtration. Since it can be appropriately washed and prepared for the next microfiltration, the life of the filter medium can be extended and the running cost is not so high even if the filter medium is high.

Further, in the case of microfiltration, it is possible to easily perform microfiltration by pressurizing only the filtration tank with a cheap and simple pressurizing device provided in the filtration tank, without pressurizing the entire device,
Since the microfiltration tank and the normal filtration tank are used together, the device is inexpensive and does not become large.

Further, if the switching valve is automatically switched according to the turbidity of the hot water detected by the turbidity sensor, the dirt can be removed from the initial stage where a slight amount of white turbidity has occurred, which facilitates microfiltration. When the dirt is removed, the microfiltration is automatically completed, so the microfiltration is not unnecessarily performed and the filter material is not clogged quickly.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment of the present invention will be described with reference to the piping diagram of FIG.

Reference numeral 1 is a bathtub containing hot water 2, and reference numeral 3 is a suction pipe for pumping up the hot water 2 in the bathtub 1.
Is a hot water pipe 5 for normal filtration through a switching valve 4 provided on the way.
And a hot water suction pipe 6 for microfiltration.

Reference numeral 7 is a filtration tank for filtering a cylindrical dirt having an opening on the top surface and a hot water outlet on the bottom surface. The filtration tank 7 has a mesh-like support plate 8 mounted slightly above the bottom surface. A tubular ordinary filter medium bucket 9 having a mesh-like bottom plate and an open top is filled with an ordinary or mixed ordinary filter medium 10 such as activated carbon, barley stone, or zeolite.

A cylinder having a mesh-shaped bottom plate and a mesh-shaped support plate 11 mounted above the ordinary filter medium bucket 9 and filled with a precision filter medium 13 such as a high density sintered body. -Shaped precision filter material bucket 12 is removably placed, and normal and precision double filtration layers are formed.

On the side surface of the filtration tank 7, a normal filtration hot water inlet 14 to which a normal filtration hot water suction pipe 5 for supplying hot water to the normal filtration material bucket 9 is connected, and a precision filter medium bucket 12.
There is provided a microfiltration hot-water inlet 15 to which a microfiltration hot-water suction pipe 6 for supplying hot water to is connected.

Reference numeral 16 is an upper lid for closing the upper opening of the filtration tank 7. A compressor 17 for pressurizing the inside of the tank with compressed air is attached to the upper lid 16 through an air supply pipe 18, and the inside of the tank is also covered. An exhaust pipe 19 for exhausting air is attached with an exhaust valve 20 provided midway.

A water level sensor for detecting the water level is attached to the filtration tank 7, 21 is an upper water level sensor for detecting the upper water level, and 22 is a lower water level sensor for detecting the lower water level.

Reference numeral 23 is a circulation pump for forcibly circulating hot water, 24 is a heater for keeping the hot water at an appropriate temperature, and 25 is a heater.
Is a spout pipe for spouting the cleaned hot water again into the bathtub 1. The filtration tank 7 and the circulation pump 23 connected to the suction pipe 3 are the connection pipes 26, and the circulation pump 23 and the spout pipe 25 are The heater 24 to be connected is connected by a connecting pipe 27,
A circulation path for cleaning the hot water 2 in the bathtub 1 is formed.

Reference numeral 28 is a jet nozzle attached to the tip of the spout pipe 25. An intake pipe 29 is attached to the jet nozzle 28. The intake valve 31 is opened to inhale the hot water which has been cleaned together with the air. As a result, you can enjoy a bubble bath in the bathtub 1.

Further, the air sucked by the intake pipe 29 is ozoned by the ozonizer 30, and the ozoned air is jetted from the jet nozzle 28 into the bath 1 to sterilize the hot water 2 with ozone.

Reference numeral 32 denotes an optical turbidity sensor ordinarily used for detecting the degree of cloudiness of the hot water, and 33
Is a hot water temperature sensor for detecting the temperature of the hot water so that the temperature of the hot water can be kept at the temperature set by the bather, and 34 is a control device for controlling the entire device.

2 is a block diagram showing the control by the control unit 34. The control unit 34 includes a CPU 35 as a central processing unit, a ROM 36 for storing various control data and control programs, and an arithmetic processing unit. Therefore, the microcomputer is composed of a RAM 37 for temporarily storing data.

Reference numeral 38 is a key input device. The key input device 38 is used to operate / stop the device.
A stop key 39, a temperature setting key 40 for setting the temperature of the hot water to your liking, an intake valve 31 of the intake pipe 29 is opened, and a jet key 41 for ejecting hot water from the jet nozzle 28 as a jet flow and an ozonizer 30 are operated. A sterilization key 42 for ozone sterilization, a microfiltration key 43 for manually or automatically switching the switching valve 4 and operating the compressor 17, and performing microfiltration with the filtration tank 7 are provided.

Reference numeral 44 is a display device for displaying all operating states of the hot water temperature and other devices.

The driving operation of the device constructed as described above will be explained. Before starting the driving, the key input device 38 is operated.
Various operating conditions including temperature are determined by key input with, and at this time, if the hot water becomes cloudy, the microfiltration is set to automatically perform microfiltration.

When the operation is started by operating the operation / stop key 39, the circulation pump 23 is operated to draw the hot water 2 in the bathtub 1 from the hot water suction pipe 3, and the switching valve 4 is the normal hot water suction pipe 5 for filtration. Since it has been switched to the side, the hot water flows as shown by the arrow in FIG. 1, and first enters the filtration tank 7 from the normal suction inlet 14.

The hot water that has entered into the filtration tank 7 through the hot-water suction port 14 for normal filtration is filled with the normal filter medium bucket 9 in the normal filter medium 1
After being filtered at 0, it is heated from the hot water outlet through the heater 8 so as to maintain the set temperature while the temperature is detected by the hot water temperature sensor 33, and is passed from the jet nozzle 25 through the jet nozzle 28 to the bathtub 1
Will be returned to.

When the hot water returned from the jet nozzle 28 to the bathtub 1 is mixed with the air sucked from the intake pipe 29, it becomes a bubble bath, and when the ozonizer 30 is operated, the jetted air is ozoned and the hot water is sterilized with ozone. It

When the turbidity sensor 32 detects that the hot water becomes cloudy, the hot water pipe 3 is switched to the side of the fine filtration hot water pipe 6 by switching the switching valve 4 by the control of the control device 34. As shown by the arrow in FIG. 3, it flows into the filtration tank 7 from the water inlet 15 for microfiltration first.

When a certain amount of hot water is accumulated in the filtration tank 7, the switching valve 4 is closed and the compressor is operated at the same time to pressurize the inside of the tank with compressed air, and the precision filter medium 13 packed in the precision filter medium bucket 12 is first used to make a precision. It is filtered, then filtered with a regular filter medium 10 packed in a regular filter medium filter bucket 9 and discharged from the hot water outlet to the connecting pipe 26.

When the filtration of the hot water accumulated in the tank is finished, the operation of the compressor 17 is stopped and at the same time the exhaust valve 20 is opened to exhaust the air in the tank, and when the exhaust is finished, the exhaust valve 19 is closed to filter At the same time when the tank is closed again, the switching valve 4 is switched to the side of the hot water suction pipe 6 for microfiltration, and a predetermined amount of hot water is again stored in the filtration tank 7 and the microfiltration is applied while pressurizing with compressed air under the operation of the compressor 17. Filtered.

Contamination of the colloidal particles that had formed cloudiness in the hot water due to the repetition of filtration as described above is filtered and the cloudiness disappears. If the turbidity sensor 32 detects this, the switching valve 4 is switched again to return to normal. Return to filtration.

In performing filtration with precision filtration in the filtration tank 7, the switching valve 4 is opened / closed and the compressor 1 is used.
It is necessary to control the operation and stop of the exhaust valve 7 and the opening and closing of the exhaust valve 20, but this control can be easily performed based on the time set in advance by an experiment, and the water level in the tank provided in the filtration tank 7 can be detected. This can be easily performed based on the water levels detected by the upper and lower water level sensors 21 and 22.

In the first embodiment, the double filtration layer is formed in the filtration tank 7 by vertically stacking the microfiltration layer and the normal filtration layer. However, as shown in the second embodiment of FIG. You may form a double filtration layer in a double cylinder shape.

Explaining the configuration of the filtration tank 45 of the second embodiment, a hot water outlet 47 is provided in the center of the bottom surface of a cylindrical filtration tank 45 having an upper surface opened and sealed by an upper lid 46.
A hot water discharge pipe 48 connected to this hot water discharge port 47 and having many holes
And a mesh-like support plate 49 for mounting the filter material bucket is mounted at a position slightly above the bottom surface.

Reference numeral 50 denotes a precision filter medium bucket, in which the bottom of a double cylinder made of net material is sealed and filled with the precision filter medium 13, and 51 is a normal filter medium bucket, the outer diameter of which is the precision filter medium. The bottom of a double cylinder made of a mesh material whose inner diameter is smaller than the inner diameter of the bucket and whose inner diameter is larger than that of the drainage pipe 48 is sealed, and the filter medium 10 is usually packed therein.

On the support plate 49, the ordinary filter medium bucket 51 is placed around the drainage pipe 48, and the ordinary filter medium bucket 5 is placed.
Enclose the outside of 1 and put a precision filter media bucket 51 on it.
The normal filtration hot water passage 52 is provided outside the normal filtration media bucket 51.
And a hot water passage 53 for the precision filter medium is formed outside the precision filter medium bucket 50.

A normal filtration hot water inlet 54 and a fine filtration hot water inlet 55 are provided at positions on the bottom plate 49 opposed to the normal filtration hot water passage 52 and the precision filter hot water passage 53, respectively.
The hot water suction pipes 5 and 6 of the hot water suction pipe 3 are connected to the hot water suction ports 54 and 55, respectively.

Other than this, as in the first embodiment, water level sensors 21 and 22 are provided in the tank, and an exhaust pipe 19 having a compressor 17 and an exhaust valve 20 is attached to the upper lid 46.

When the normal filtration is carried out in the filtration tank 45 thus constructed, the hot water enters from the normal filtration hot water inlet 54 as shown by the arrow in FIG.
After being normally filtered by the filter medium 10 through the hot water 2, the hot water is discharged from the hot water discharge port 47 to the connecting pipe 26 through the hot water discharge pipe 48.

When the hot water becomes cloudy and is subjected to microfiltration, as shown by the arrow in FIG. 5, the hot water enters through the microfiltration hot water inlet 55 and flows through the microfiltration hot water flow passage 53, and a predetermined amount of hot water enters the tank. When the water is accumulated, as in the case of the first embodiment, the fine filtration with the fine filter medium 13 is performed while controlling the opening / closing of the switching valve 4, the operation / stop of the compressor 17, and the opening / closing of the exhaust valve 20 based on the time or the water level. Filter the addition.

In both the first and second embodiments, the microfiltration is carried out only when the hot water becomes cloudy. Therefore, during the normal filtration, the microfiltration medium bucket 12 or 50 is taken out from the filtration tank 7 or 45. There is no problem even if it is set aside.

Therefore, once the microfiltration is performed, the microfiltration medium 13 is considerably clogged. However, if the microfiltration medium 13 is washed and prepared for the next microfiltration every time the microfiltration is completed, the filtration medium must be replaced. It's hard to get terrible clogging.

[0053]

The present invention has the above-described structure and operation, and the filtration tank is configured to be capable of performing microfiltration as well, and microfiltration is automatically added only when the hot water becomes cloudy. The hot water can be filtered so that the cloudiness can be easily removed.

Therefore, the precision filter medium is not always filtered with hot water, and can be easily washed and prepared for the next fine filtration after the completion of the fine filtration. The cost of the filter medium is not so high because it is difficult to meet.

Further, since the pressurization at the time of the microfiltration can be easily performed by the compressed air, it is sufficient to provide a compressor as the pressurizing device, and the equipment cost is hardly required.

Further, since the microfiltration and the normal filtration can be performed by one filtration tank, the apparatus is not so large, and especially when the filtration layers are provided in a double structure in the vertical direction, the height of the filtration tank is slightly high. The flat area does not increase at all.

As a result of the above, according to the present invention, the equipment cost, the size of the equipment, the running cost, etc. are almost the same as those of the conventional apparatus, and moreover, the cleaning of the bath water which can easily remove the dirt of the colloidal particles which causes cloudiness. Provide a device.

[Brief description of drawings]

FIG. 1 is a piping diagram of the first embodiment (normal filtration state),

[Fig. 2] Control block diagram,

FIG. 3 is a piping diagram of the first embodiment (fine filtration state),

FIG. 4 is a piping diagram of the second embodiment (normal filtration state),

FIG. 5 is a piping diagram of the second embodiment (fine filtration state).

[Explanation of symbols]

 1 Bath 2 Hot water 3 Hot water suction pipe 4 Switching valve 5 Hot water suction pipe for normal filtration 6 Hot water suction pipe for precision filtration 7 Filtration tank 9 Normal filter material bucket 10 Normal filter material 12 Precision filter material bucket 13 Precision filter material 14 Normal filtration hot water inlet 15 Precision Hot water inlet for filtration 17 Compressor 23 Pressurizing pump 24 Heater 25 Hot water pipe 32 Turbidity sensor 34 Control device 45 Filtration tank 50 Precision filter material bucket 51 Normal filter material bucket 54 Normal filtration hot water inlet 55 Fine filtration hot water inlet

Claims (2)

[Claims] 1. A hot water in a bathtub is pumped by a circulation pump from a hot water pipe, and a bathtub hot water circulation path provided with various cleaning devices such as a filtering device for removing dirt is forcibly circulated for cleaning. In a bath water purifying device that re-spouts the treated hot water from the spout tube into the bath, the filtering device is a removable filter mounted regular filter medium bucket and a precision filter medium bucket filled with precision filter medium. The normal and precision double filtration layers are formed by the above, and the hot water inlet connected to the hot water pipe branched through the switching valve for supplying hot water for filtration to each filtration layer is for normal filtration and fine filtration. An apparatus for cleaning bath water, wherein the apparatus is a filtration tank, which is separately provided separately and is provided with a pressurizing device for pressurizing the inside of the tank. 2. A bath water purifying apparatus according to claim 1,
Under the control of the control device, the suction valve of the filtration tank is switched by automatically switching the switching valve based on the turbidity of the hot water detected by the turbidity sensor. A method for cleaning hot water in a bathtub, which comprises supplying to a hot-water inlet for filtration, and under the operation of a pressurizing device, in addition to normal filtration with a normal filter medium, fine filtration with a fine filter medium is also performed.