JPH0852309A - Cleaning device for hot bathwater - Google Patents

Abstract

PURPOSE:To provide a cleaning device for hot bathwater in which backwash of a filter medium is effectively performed. CONSTITUTION:A filtration tank arranged in the body of a cleaning device for hot bathwater is formed into such a shape as the inflow port 32 of back washing water is provided in the center of the base of the body 30 of the filtration tank and the base provided with the water-passing holes 34 of a filter medium bucket 33 forms a slope toward the center of a spherical surface or a conical shape. The filter medium bucket 33 filling granular filter media 29 is freely detachably held in the body 30 of the filtration tank. When the filter media existing in the center of the base of the filter medium bucket 33 are blown up and washed by back washing water passing through the center of a filter medium layer, the filter media to be next washed slide on the slope thereafter and successively gather in the center of the base and are blown up by back washing water and cleaned. As a result, the whole filter medium is effectively cleaned while it is stirred.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub apparatus, and more particularly to a bathtub hot water cleaning apparatus provided with a filtration tank for filtering dirt in bathtub hot water using a granular filter material such as activated stone or activated carbon. .

[0002]

2. Description of the Related Art Recently, hot water in a bathtub is pumped up by a circulation pump and forcedly circulates in a circulation path provided with various cleaning treatment equipment, and the purified hot water is ejected again into the bathtub to exchange the hot water. A bathtub water purifier has been developed that allows you to enjoy a comfortable bath with hot water at a suitable temperature 24 hours a day without any trouble.

In this bath water purifying device, as a filtering device, an activated stone such as barite stone, which removes dirt components by ion exchange and at the same time elutes and activates minerals,
A filtration tank in which a filtration layer is formed by individually or in combination filling with porous particulate substances having various water treatment capabilities such as activated carbon that adsorbs and removes dirt and zeolite that absorbs and removes dirt at the same time. Are often deployed.

When a filtration tank filled with such a filter medium is provided as a filter device, not only the filter device not only filters the dirt by the filter layer of the granular filter medium but also treats the water according to the ability of the filter medium. Therefore, the bath water is cleaned more effectively.

When such a cleaning device is continuously operated, the filter medium filled in the filter tank becomes dirty and the filter layer is clogged, the circulating amount of hot water is reduced, and the cleaning ability is lowered. In addition, if the function of making a bubble bath by inhaling hot water containing air by inhaling from the negative pressure part that speeds up the flow rate of the hot water from the jet nozzle into the bathtub, sufficient negative pressure is not obtained. Since it cannot be formed, the amount of intake air decreases and the function of the bubble bath also declines.

For this reason, when the filter layer of the filter tank is clogged, the filter material forming the filter layer is not always cheap and cannot be replaced frequently. Therefore, the filter material is taken out of the filter tank and washed.

Further, cleaning the filter medium is troublesome and at the same time not so preferred for dirty work. Therefore, in order to automatically wash the filter medium without taking it out from the filtration tank, it is necessary to clean the filter layer with hot water. Many so-called backwashing devices for washing the filter medium by flowing in the opposite direction to automatically wash the device have been developed.

Most of the conventional backwashing devices simply backflow the hot water, which is not so strong in pressure, in the filtration tank, so that the layers of the filter media are not collapsed and the filter media are in close contact with each other. , Could not remove dirt very effectively from the filter media.

For this reason, various attempts have been made to improve the backwashing effect by applying ultrasonic vibration to the filter medium. However, since the filter medium particles are relatively large and heavy, the layers of the filter medium are destroyed by the vibration. It was difficult to break apart.

Therefore, during backwashing, a relatively large amount of air accumulated in the air tank is immediately introduced into the filtration tank together with the hot water for backwashing so that the layer of the filter medium is destroyed to enable effective backwashing. A device shown as a block diagram was also developed.

In FIG. 5, reference numeral 1 is a bathtub, 2 is hot water, 3 is a hot water suction pipe for pumping hot water 2 in the bathtub 1 to the apparatus main body 4, and the apparatus main body 4 is provided with a granular filter medium for filtering the hot water. Cleaning equipment such as a filled filtration tank 5, a circulation pump 6 for forcedly circulating hot water, a heater 7 for heating the hot water to an appropriate temperature, and an ozonizer 8 for sterilizing the hot water with ozone are provided, and 9 is a device body 4
It is a spout tube for spouting hot water that has been subjected to the cleaning process to the bathtub 1.

Numeral 10 is a prefilter attached to the tip of the hot water pipe 3 for removing large dirt in advance before it is pumped up to the apparatus body 4, and numeral 11 is for ejecting the cleaned hot water into the bathtub 1 as a jet flow. Reference numeral 12 is a jet nozzle attached to the tip of the spout tube 9, and reference numeral 12 is an intake pipe for sucking air from the negative pressure portion of the jet nozzle 11.

A solenoid valve 13 is provided at the tip of the intake pipe 12, and the ozonizer 8 is provided in the middle of the intake pipe 12. When the solenoid valve 13 is opened, the air sucked from the intake pipe 12 is ejected together with hot water from the jet nozzle 11. When it becomes a bubble bath and the ozonizer 8 is further operated, the sucked air is ozoned and the hot water 2 in the bath 1 is sterilized by ozone.

Reference numeral 14 is an air tank for storing air for backwashing, and this air tank 15 is arranged in the hot water circulation path on the downstream side of the filtration tank 5 in the forward flow to supply air into the tank. The air pump 15 to the air pipe 1
It is connected via 6.

Reference numeral 17 denotes an L-shaped hot water suction side switching valve provided in the hot water suction pipe 3 downstream of the circulation pump 6. The hot water suction side switching valve 17 has hot water in the bath 1 used for backwashing. A hot water discharge pipe 18 for discharging the water 2 out of the bathtub 1 is connected.

Reference numeral 19 denotes a T-shaped spout side switching valve provided in the spout tube 9, and the suction pipe 3 and the spout tube 9 are connected via the suction side switching valve 17 and the spout side switching valve 19. Bypass pipe 2
It is directly connected with 0.

Reference numeral 21 is a control device for controlling the entire apparatus. Under the control of this control device 21, the hot water suction side switching valve 17 and the hot water flow side switching valve 19 are switched, and the circulation pump 6, the air pump 15 and the like are operated. By controlling, circulation paths for cleaning, backwashing, and bypass are formed for the hot water 2 in the bathtub 1, and 22 and 23 are sucked in order to prevent backflow of the hot water when the circulation paths are formed. It is a check valve provided in the hot water pipe 3 and the air supply pipe 16.

First, the case where the cleaning process is carried out by this apparatus will be described. In the piping diagram of FIG. 6, the circulation path of the hot water in this case is shown by an arrow.

At the time of cleaning, the operation of the air pump 15 is stopped so that air is not accumulated in the air tank 14, and the hot water suction side switching valve 17 is connected to the hot water suction pipe 3
Is opened in a direction in which the bathtub communicates with the filtration tank 5 and is closed in a direction in which the hot water discharge pipe 18 is connected, and the spout side switching valve 19 is moved in a direction in which the spout pipe 9 communicates with the air tank 14 and the bath 1. The direction in which the bypass pipe 20 is opened and communicated with the bypass pipe 20 is switched to the closed state.

When the circulation pump 6 operates in such a state, the hot water 2 in the bathtub 1 is sucked up from the hot water suction pipe 3, and since the flow of the hot water is in the forward direction, the check valve 22 is opened to switch the hot water suction side. The hot water that has flowed into the filtration tank 5 from above through the valve 17 and entered the filtration tank 5 flows downward while the dirt is filtered by the filled filter material and at the same time the activation stones are activated. Water that has flowed out of the tank, is heated by the heater 7, and has undergone the cleaning process and is jetted into the bathtub 1 from the jet nozzle 11 at the tip of the spout tube 9 through the air tank 14 in which no air is accumulated and the spout side switching valve 19. To be done.

At this time, if the solenoid valve 13 is open, air is taken from the intake pipe 12 to form a bubble bath, and if the ozonizer 8 is operating, ozone sterilization is performed.

Next, the hot water is cleaned for a predetermined period of time, and the filter material filled in the filtration tank 5 becomes dirty and clogged, and the cleaning effect is lost. Therefore, backwashing is performed to remove this dirt. The case will be described with reference to the piping diagram of FIG.

In backwashing, first, the operation of the circulation pump 6 is stopped, the hot water intake side switching valve 17 is cut off from the hot water pipe 3 connecting the bath 1 and the filtration tank 5, and the bath 1 and the bypass pipe 2 are connected.
At the same time that it is in communication with 0, at the same time as it is in communication with the hot water discharge pipe 18, the spout side switching valve 19 is switched to the direction in which the spout tube 9 communicates with the bypass pipe 20 and disconnects the communication with the bathtub 1. The hot water intake side switching valve 17 and the hot water jet side switching valve 19 are switched to the direction of the backwash hot water circulation path forming the backwash hot water circulation path, and then the air pump 15 is operated to feed air to the air tank 14 via the air supply pipe 16. To a predetermined amount.

When a predetermined amount of air is stored in the air tank 14, the operation of the air pump 15 is stopped, the circulation pump 6 is operated again, and hot water is circulated in the backwash circulation path shown by the arrow.

That is, the hot water pumped from the hot water suction pipe 3 flows into the bypass pipe 20 because the check valve 22 is opened in the forward direction of the hot water flow, and then flows into the air tank 14 via the hot water side switching valve 19. First, the stored air is pushed out from the air tank 14 and flows out, and then the hot water mixed with the air flows out, enters the filtration tank 5 through the heater 7, and flows in the reverse direction from bottom to top in the tank. Backwash to remove dirt from the filter media.

At this time, the layer of the filter medium in the filtration tank 5 is first destroyed by the pressure of the inflowing air, and then the pressure of the air is also applied by the hot water coming in together with the air, and the layer of the filter medium is largely destroyed. Since the filter medium is separated and hot water flows in the state where the filter medium is separated, the dirt on the filter medium is very well removed, and the dirty water obtained by backwashing the filter medium flows out of the tank and passes through the hot water suction pipe 3 and the hot water discharge pipe. Emitted from 18.

[0027]

However, even if the above backwashing with air is carried out, if the particles of the granular filter medium are large, or if the specific gravity is high and heavy, the filter medium layer cannot be sufficiently collapsed, and therefore the filter medium cannot be sufficiently collapsed. It was very difficult to completely remove the stains on the.

That is, the conventional filtration tank is as shown in FIG. 3, in which 24 is a cylindrical tank body having an open top surface. A hot water inlet 25 through which hot water for the filtering process is connected is provided, and a hot water outlet 26 for discharging the hot water after the filtering process is provided at the center of the bottom surface.

Reference numeral 27 denotes a cylindrical filter medium bucket having an open top surface, and a number of water passage holes 28 are provided on the bottom surface of the filter medium bucket 27, and 29 is an activated carbon filled in the filter medium bucket 27 alone or as a mixture. Granular filter media such as activated stone and zeolite.

When the filtration treatment for cleaning is performed in the filtration tank thus formed, as shown by the arrow,
The hot water that has entered the tank body 24 through the upper hot water inlet 25 enters the filter material bucket 27 through the upper surface opening, flows downward while the dirt is removed by the filter layer formed by the filter material 29, and the water passage hole 28 on the bottom surface. After spilled from the tank body 2
4 flows out through the tap hole 26 at the center of the bottom surface, flows through the connecting pipe to the heater which is the next processing step, and there is no problem in the filtering process.

However, in the filter tank having such a structure, the filter medium 29 becomes soiled, and when backwashing to remove it, the layer of the filter medium collapses and it is difficult to stir. There was a problem that it was difficult to remove by washing.

That is, the backwash will be described with reference to FIG. 4. As shown by the arrow, the backwash water that has entered through the tap hole 26 at the center of the bottom of the tank body 24 is passed through the filter medium bucket 27 to the bottom. After entering through the hole 28, it flows upward through the layer of the filter medium 29, flows out through the upper opening to the hot water inlet 25 at the upper side surface of the tank body 24, and the hot water inlet 2
The hot water flowing out to 5 is discharged from the hot water discharge pipe through the hot water suction pipe connected thereto.

In this case, the backwash water passes through the central portion of the layer of the filter medium 29 but does not spread over the entire surface. Therefore, as shown by the hatch, the filter medium 2 in the central portion through which the backwash water passes.
Only 9 is blown up by this water flow and stirred as shown by the thick arrow, and at the same time as the water flow is rubbed, the dirt that was rubbing the filter media against each other is removed. It doesn't fall.

Of course, as described above, if not only the backwash water but also the air is made to flow into the filter medium bucket 27 during the backwashing, the stirring effect on the filter medium 29 is improved and a lot of dirt is removed. Since the amount and the pressure are also limited, it was difficult to stir the large and heavy granular filter medium as a whole to remove the dirt of all the filter medium 29.

The present invention solves the above-mentioned drawbacks of the prior art, and of course, when air is used in combination, agitation of the filter material occurs sufficiently even when air is not used together, and the dirt on the granular filter material is backwashed. It is an object of the present invention to provide a bath water purifying device capable of easily dropping water.

[0036]

That is, according to the present invention, the hot water in the bathtub is subjected to a predetermined cleaning treatment such as pumping the hot water in a hot water pipe using a circulation pump, filtering dirt in a filter tank and heating with a heater, etc. In a bath water purifying device for continuously ejecting water from a pipe into a bathtub to keep the bath water clean, the filtration tank has a filter medium at the center of the bottom surface of a tank body that detachably accommodates a filter medium bucket filled with granular filter medium. An apparatus for cleaning bath water, wherein an inlet for backwash water for removing clogging is provided, and the bottom surface of the filter medium bucket is formed in a sloping shape toward the center such as a spherical surface or a mortar shape.

[0037]

The present invention is constructed as described above, and the filtration tank is provided with an inlet for backwash water for removing clogging of the filter medium at the center of the bottom surface of the tank body for storing the bucket of the filter medium. If the bottom surface of the filter medium bucket that is detachably accommodated in the base is formed as a sloping surface toward the center such as a spherical surface or a mortar-like shape, the filter medium filled in the filter medium bucket is totally stirred by the water flow of the backwash water. As it is done, the dirt attached to the filter medium will come off well.

That is, the backwash water that has entered from the water inlet at the center of the bottom surface of the tank main body during backwash flows upward while blowing the filter medium up through the central portion of the filter medium bucket, and the blown up filter medium is backwashed water. At the same time as being rubbed by the water flow, the filter media are rubbed against each other to remove the dirt and accumulate on the upper surface of the filter media around the backwash water flow passage.

On the other hand, in the center of the bottom surface of the filtering material bucket in which the filtering material has been blown up and the filtering material has disappeared, the dirty filtering material slides down from the surroundings on the slope of the bottom surface and gathers. The dirty filter media gathered in the center is blown up by the water stream of the backwash water.

When such circulation is repeated, the dirt-filled filter medium is successively collected in the central portion and blown up with backwash water to be washed, and as a result, the filter medium is backwashed while being stirred as a whole to be completely soiled. Will be dropped.

[0041]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows the filtration tank of the present invention as a vertical cross-sectional view, in which 30 is a cylindrical tank body having an open top surface. A pipe 3 is connected to a hot water inlet 31 through which hot water for filtering is introduced, and a hot water outlet 32 through which hot water after filtering is discharged is provided at the center of the bottom surface.

Reference numeral 33 is a cylindrical filter medium bucket having an open upper surface, and the bottom face of the filter medium bucket 33 is spherical, and innumerable water passage holes 34 are provided on the spherical bottom face. Is a granular filter medium, such as activated carbon, activated stone, or zeolite, which is filled in the filter medium bucket 33 alone or as a mixture.

When the filtration treatment for cleaning is performed in the filtration tank thus formed, as shown by the arrow,
The hot water that has entered the tank main body 30 through the upper hot water inlet 31 enters the filter material bucket 33 through the upper surface opening and flows downward while the dirt is removed by the filter layer formed by the filter material 29.

The hot water which has been filtered by the filter medium bucket 33 flows out from the water passage hole 34 on the bottom surface, and then the tank main body 30.
Out through the tap hole 32 at the center of the bottom surface, then through the connecting pipe to the heater which is the next processing step, the filtering process is performed without any change from the conventional example.

Next, a case where the filter medium 29 is soiled in the filtration tank having such a structure and backwashing is performed to remove it will be described with reference to FIG.

In the case of backwashing, as shown by the arrow, the hot water for backwashing, which has entered from the tap hole 32 at the center of the bottom surface of the tank body 30, is supplied to the filter medium bucket 33 from the water passage hole 34 on the spherical bottom surface. enter.

The hot water that has entered the filter medium bucket 33 through the water passage holes on the spherical bottom surface then flows upward through the central portion of the layer of the filter medium 29, and passes through the top opening to the tank as in the conventional case. The hot water flowing out to the hot water inlet 31 at the upper side surface of the main body 30 is discharged from the hot water discharge pipe through the hot water suction pipe connected thereto.

During backwashing based on such a flow of backwash water, first, the filter medium 29 in the central portion of the filter medium bucket 33 is first blown up by backwash water as in the conventional case and rubbed by the water stream of the backwash water. At the same time, the filter materials are rubbed against each other to remove the dirt and accumulate on the upper surface of the layer of the filter material 29 around the backwash water flow passage.

Next, since the bottom surface forms a slope toward the center in the central portion of the bottom surface of the filter material bucket in which the filter material has been blown up by backwash water and the filter material has disappeared, the soiled filter material slides down from the surroundings. After this, the dirt-filled filter media that came down and slid down and collected in the center of the bottom of the filter media bucket was blown up by the backwash water stream, and the dirt was removed. Accumulate around the backwash water flow passage.

When such circulation is repeated, the soiled filter medium is successively collected in the central portion and blown up with backwash water to wash it, and as a result, as shown by the thick arrow, the filter medium 2 is removed.
9 is backwashed with stirring as a whole, and as shown by the hatch, the whole part of the layer of the filter medium 29 is cleaned.

If the bottom surface of the filter medium bucket is formed in such a shape that the slope is formed toward the center, the filter medium will be well agitated when backwashing, but air will be further added to the filter medium bucket. Needless to say, when the filter medium is made to flow in, the filter medium is larger and heavier, and the stains that have been agitated on the whole are better removed.

As described above, according to the present invention, the bottom surface of the filter medium bucket is provided with a slope toward the center, and the filter medium is blown up with backwash water to the center of the bottom surface to wash the filter medium and then slide the slopes one after another to wash the filter medium. The shape of the bottom surface of the filter material bucket is not limited to a spherical shape or a mortar shape, and the filter material has a predetermined angle so that the filter material can slide down toward the center. Any shape may be used as long as it forms a slope.

The shape of the bottom surface of the tank main body is the same spherical shape as the shape of the bottom surface of the filter medium bucket to be stored in the embodiment, but of course, it does not matter if the shape is not the same as the bottom surface of the filter medium bucket such as a flat surface. .

Further, in this embodiment, a tap hole is provided at the center of the bottom surface of the tank body, and this tap hole is used as an inlet for backwash water, but of course the tap hole of the tank body is provided at the center of the bottom surface. If not, it is necessary to provide a backwash water inlet at the center of the bottom surface.

[0056]

Industrial Applicability The present invention has the above-described structure and operation, and the extremely simple structure makes it possible to easily and effectively backwash the granular filter medium filled in the filter tank. Since the filter medium can be constantly kept in a state of not being clogged, a cleaning device for bath water is provided, which not only has the effect of cleaning but also functions as a bubble bath constantly.

Moreover, since the cleaning of the filter medium is automatically performed in a constant cycle, the maintenance is not troublesome, and the expensive filter medium need not be replaced unnecessarily, so that the running cost is reduced.

[Brief description of drawings]

FIG. 1 is a cleaning state of a filtration tank according to an embodiment,

FIG. 2 is a backwash state with an example filtration tank,

FIG. 3 is a cleaning state by a conventional example filtration tank,

FIG. 4 is a backwash state using a conventional filtration tank,

FIG. 5 is a block diagram of a bath water cleaning device,

FIG. 6 is a piping diagram of a bathtub cleaning device (cleaning state),

FIG. 7 is a piping diagram of a bath water purifier (backwash state).

[Explanation of symbols]

 1 Bathtub 2 Hot water 3 Hot water pipe 4 Device body 5 Filtration tank 6 Circulation pump 7 Heater 8 Ozonizer 9 Fountain pipe 29 Granular filter medium 30 Tank body 31 Inlet port 32 Outlet port (backwash water inlet) 33 Filter medium bucket 34 Water passage hole

Claims (1)

[Claims] 1. A hot water in a bathtub is pumped up by a hot water pipe using a circulation pump, dirt is filtered in a filtration tank, and a predetermined cleaning treatment such as heating by a heater is carried out, and then the hot water pipe is jetted again into the bathtub. In the bath water purifying device for constantly keeping the water in a clean state, the filtration tank contains a filter medium bucket that is filled with granular filter medium in a detachable manner. A bath water purifying device, characterized in that a water outlet is provided and the bottom surface of the filter medium bucket is formed in a sloped shape toward the center such as a spherical surface or a mortar shape.