JP3366041B2 - Bathtub cleaning equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath device, and in particular, a backwash function for washing the filter medium by flowing hot water in a direction opposite to that used for cleaning a filter tank filled with a filter medium such as activated stone or activated carbon. The present invention relates to a bathtub cleaning device having a water bath.

[0002]

2. Description of the Related Art Recently, hot water in a bathtub is pumped up by a circulation pump to forcefully circulate the circulating water in which various cleaning treatment equipment such as a filtration tank is provided, and the purified water is returned to the bathtub. A cleaning device for bathtub hot water was developed.

This bath water purifying device includes a circulation pump for circulating the hot water, a pre-filter provided at the hot water inlet of the hot water pipe for filtering large dirt, and the capacity of the filtering material while filtering dirt. Various devices such as a filtration tank filled with a porous granular filter material for water treatment according to the above, an ozone sterilizer for sterilization, a heater for keeping hot water at an appropriate temperature, and the like are provided.

In the filtration tank, dirt is removed by ion exchange, and at the same time, activated stone such as barley stone that elutes and activates minerals, activated carbon that adsorbs and removes dirt, and dirt is adsorbed and adsorbed at the same time. Porous granular materials having various water treatment capacities such as zeolite, which are removed by means of the above method, are filled individually or in combination to form a filtration layer.

For this reason, the filtration tank has not only a mere filtration ability by the filtration layer formed by the filled filter medium but also a water treatment ability corresponding to the ability of the filter medium as described above, which is effective for cleaning the bath water. It works.

With the development of the cleaning device as described above, it has become possible to enjoy a comfortable bathing at any time for 24 hours, keeping the water at a proper temperature without changing the hot water.

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 deteriorated.

Therefore, when the filter layer is clogged,
Since the filter medium forming the filter layer is not always cheap and cannot be replaced frequently, the filter medium is taken out of the filtration tank and washed.

Further, cleaning the filter medium is troublesome and at the same time, it is not favored for dirty work. Therefore, it is possible to automatically clean the filter medium without removing it from the filter tank, which is different from the case of cleaning the filter medium. Many devices have been developed which are equipped with a so-called backwashing device for washing the filter medium by pouring hot water in the opposite direction for automatic washing.

[0010]

However, in the conventional backwashing apparatus, the hot water that has entered from the hot water outlet on the bottom surface of the filtration tank is made to flow from the entire surface of the bottom mesh plate into the filter material bucket and flowed from below to above the filter material layer. Since it was backwashed, it could not be effectively backwashed.

In this case, since the area of the mesh plate is considerably larger than the area of the hot water outlet where the backwash water has entered the filtration tank, the flow velocity of the hot water flowing through the bucket is considerably slow. This is because there is no force to break the layers, and if the layers of the filter media are not broken, the cleaning cannot be performed very effectively.

In order to collapse the layer of the filter medium during backwashing, a filter tank may be provided with a stirring device for the filter medium, or compressed air may be blown into the filter tank.
In this case, the size of the device becomes large, and at the same time, the cost becomes very high, and the device is more likely to fail.

It is an object of the present invention to solve the above-mentioned drawbacks of the prior art and to provide a bath water purifying apparatus having a simple and trouble-free backwashing apparatus capable of effectively cleaning the filter medium. .

[0014]

According to the present invention, hot water in a bathtub is drawn from a hot water pipe by a circulation pump to flow into a filtration tank from a hot water inlet of the filtration tank, and the filtration media in a filtration media bucket mounted in the filtration tank. Through the layer, the mesh plate with a plurality of small holes for circulating hot water on the bottom surface of the filter medium bucket, and the gap between the filter medium bucket and the filter tank, from the hot water outlet of the filter tank into the bathtub by the spout tube. In a bath water purifying device equipped with cleaning to return and hot water pumped by a circulation pump, which flows from the hot water outlet of the filtration tank and is discharged to the outside of the bath from the hot water inlet of the filtration tank, In addition to the pipe line that connects to a part of the mesh plate formed with a plurality of small holes on the bottom surface of the filter medium bucket by an opening, and the void part that connects the mesh plate formed with a plurality of small holes on the bottom surface of the filter medium bucket. With the pipeline connecting at the opening of At the time of cleaning the hot water, a connecting pipe that is formed in a branched manner and that connects the other opening to the hot water outlet is provided, and an opening / closing valve is provided in the pipeline that connects to the void portion of the hot water outlet. In order to allow all the hot water to flow from all the plurality of small holes of the mesh plate, the pipe line connected to the cavity opens the on-off valve by the inflow of hot water from the hot water inlet, and backwashes. In this case, a pipe line connected to the void portion is formed so that hot water flows into the filter medium bucket from some small holes provided in the mesh plate by the inflow of hot water from the hot water outlet. Thus, the problem can be solved by cleaning the filter medium by backfilling so that the flow velocity of the hot water is increased during backwashing to stir the filter medium filled in the filter medium bucket. Further, according to the present invention, the small hole of the mesh plate to which the pipe line for establishing a connection state in which the throttling action that flows in only a part of the mesh plate on the bottom surface of the filter medium bucket is formed is formed as an injection hole of a predetermined angle, The problem can be solved by cleaning the filter medium by stirring the filled filter medium in the filter medium bucket by jetting at a predetermined angle.

[0015]

The present invention is constructed as described above. First, when cleaning hot water, the backwash pipe connecting the backwash port on the bottom of the filter medium bucket and the hot water outlet on the bottom of the filtration tank is connected. Keep the gate valve open.

Then, the hot water which has entered the filtration tank and has been cleaned with the filter medium flows out from the net plate on the bottom of the filter medium bucket and then flows into the backwash pipe through the open spout, and then the hot water outlet on the bottom of the filtration tank. After that, it is smoothly discharged to the outside of the filtration tank. .

Next, at the time of backwashing, the on-off valve of the backwash pipe connecting the backwash port on the bottom of the filter medium bucket and the hot water outlet on the bottom of the filtration tank is closed.

Then, the hot water for backwash, which has entered the filtration tank from the hot water outlet on the bottom surface, enters the filter medium bucket from the backwash port on the bottom surface through the connecting pipe whose spout is closed.

In this case, since the hot water entering the filter medium bucket enters not through the large area of the entire bottom surface as in the conventional case but through the narrow backwash port having the same area as that of the hot water outlet, the flow velocity is high. The layer is destroyed by the jetting force of the hot water, and the backwash is effectively performed.

When a jet nozzle is attached to the backwash port,
Since the backwashing water has a higher flow velocity and can be sprayed to the layer of the filter medium in a determined direction, the backwashing of the filter medium can be performed more effectively.

Moreover, the apparatus for this backwash has an extremely simple structure and is inexpensive, and there is almost no risk of failure.

[0022]

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

FIG. 1 is a piping diagram of an embodiment of the present invention.
Is a bathtub containing hot water 2, and 3 is a cleaning device.

In the cleaning device 3, 4 is a suction pipe for pumping up the hot water 2 in the bath 1, 5 is a filtration tank for filtering dirt in the hot water, which will be described later in detail, and 6 is an appropriate temperature for the hot water. A heat-retaining heater for keeping the hot water, a circulation pump 7 for forcibly circulating hot water, a hot water pipe 8 for jetting the cleaned hot water again into the bathtub 1, and a dirty hot water 9 for backwashing. It is a hot water discharge pipe for discharging the water outside the bathtub.

Reference numeral 10 is a multidirectional switching valve for switching the pipelines, and 11, 12, 13, 14, 15 and the like are connecting pipes for connecting the respective constituent elements of the above-mentioned device in series, and 16 Is a control device for performing overall control of the device.

The detailed construction of the filtration tank 5 is as shown in FIG. 2. A connection pipe 11 is connected to the upper surface of the filtration tank 5 to form a hot water inlet 17 for flowing hot water into the tank, and a bottom surface thereof is provided to the bottom surface. A hot water outlet 18 is provided to which the connecting pipe 12 for connecting the cleaned hot water to the outside of the tank is connected.

Reference numeral 19 is a filter medium bucket mounted in the filtration tank 5, and this filter medium bucket 19 is formed as a mesh plate having a large number of small holes 21 on the bottom surface so that the hot water can flow freely. In the center of the plate 20, there is provided a backwash port 22 having substantially the same diameter as the hot water outlet 18 of the filtration tank 5, and the backwash port 22 is provided with an injection nozzle 23 having a plurality of injection holes 24 of a predetermined angle. It is installed.

Reference numeral 25 is a filter medium filled in the filter medium bucket 19. As the filter medium 25, a porous granular filter medium such as activated carbon, activated stone or zeolite is used alone or in combination.

Reference numeral 26 is a backwash pipe for connecting the backwash port 22 of the filter medium bucket 19 and the hot water outlet 18 of the filtration tank 5,
In this embodiment, since the jet nozzle 23 is attached to the backwash port 22, the jet nozzle 23 and the hot water outlet 18 are connected.

Reference numeral 27 is a spout provided in the backwash pipe 26, one or a plurality of spouts as required, and a check valve 28 which opens toward the inside of the pipe as an opening / closing valve is attached to the spout 27. Of course, an electromagnetic valve or any other type may be used as the opening / closing valve.

The flow of hot water when the hot water is cleaned by the cleaning device having the above-described structure will be described below.

When the hot water is cleaned, the controller 16
The switching valve 10 switches the pipe line to the cleaning circulation line based on the control of 1., and when the circulation pump 7 is operated in this state, the hot water 2 in the bathtub 1 flows from the hot water pipe 4 as shown by the arrow. It is sucked up.

The hot water sucked up from the hot water suction pipe 4 is the switching valve 1.
0 through the connecting pipe 11 and enters the filtration tank 5 from the hot water inlet 17 on the upper surface, and flows downward while being filtered by the filter medium 25 in the filter medium bucket 19.

After the filtration, the hot water that has reached the mesh plate 20 on the bottom surface of the filter material bucket 19 exits from the small holes 21 and then opens the check valve 28 as shown by the arrow to open it from the spout 27 into the backwash pipe 26. It flows to the connecting pipe 12 through the hot water outlet 18 on the bottom surface of the inlet filtration tank 5.

After cleaning in the filtration tank 5, the connecting pipe 1 is completed.
The hot water flowing into 2 is heated to an appropriate temperature by the heat retention heater 6 under the control of the control device 16, and the connecting pipe 13, the switching valve 10,
After passing through the circulation pump 7, the connecting pipe 15, and the switching valve 10,
As shown by the arrow, it is jetted again from the spout tube 8 into the bathtub 1.

The hot water 2 in the bathtub 1 is cleaned by repeating the above circulation. If necessary, ozone generated by an ozone generator (not shown) may be sucked into the hot water to sterilize the ozone. Alternatively, a jet nozzle may be attached to the tip of the spout tube 8 to form a bubble bath.

Next, the switching valve 10 is switched from the hot water circulation passage to the backwash circulation passage by referring to FIG. 3, which shows the piping state during backwashing, FIG. 4 which shows the filtration tank, and FIG. 5 which shows a partially enlarged view of the filter medium bucket. A case of backwashing a dirty filter medium will be described.

In the case of backwashing, the hot water 2 in the bathtub 1 sucked up from the hot water suction pipe 4 by the operation of the circulation pump 7 is in the reverse route to that in the case of cleaning, and the switching valve 10, the connecting pipe 15 and the circulation It flows through the pump 7, the connecting pipe 14, the switching valve 10, the connecting pipe 13, and the heater 6 for keeping heat into the connecting pipe 12 connected to the hot water outlet 18 of the filtration tank 5.

The hot water flowing into the connecting pipe 12 enters the filtration tank 5 through the hot water outlet 18 and flows to the backwash pipe 26 as shown by the arrow.

When hot water flows into the backwash pipe 26, the check valve 2
The spout 27 is closed by 8 and the spout 23 flows to the injection nozzle 23 attached to the backwash port 22 of the mesh plate 20 on the bottom surface of the filter bucket 19 without flowing out of the pipe.

Then, the hot water is sprayed from the spray hole 24 of the spray nozzle 23 to the filter medium 25 from below at a predetermined angle.

In this case, since the hot water jetted from the jet nozzle 23 is narrowed by the small jet holes, the flow velocity is high, and the filter medium 25 is shaken by the force of this water flow to break the layer and agitate, so that it is attached. Dirt is often removed.

The hot water thus sprayed into the filter medium bucket 19 rises while backwashing the filter medium 25, goes out from the hot water inlet 17 on the upper surface of the filtration tank 5 and enters the connecting pipe 11, and the switching valve 10 Through the hot water discharge pipe 9 to the outside of the bathtub 1.

If such backwashing is continued for a predetermined time, the filter medium 2
Since the dirt of No. 5 is completely removed, after that, the switching valve 10
Thus, the circulation path of the hot water is switched, and the cleaning of the hot water 2 in the bathtub 1 is started again as described above.

[0045]

Industrial Applicability The present invention has the above-described structure and operation, and the filter medium can be backwashed very effectively with a very simple device, and the filter medium is constantly clean without much labor and cost for maintenance. There is provided a bath water purifying device capable of filtering hot water with a bath.

[Brief description of drawings]

[Figure 1] Cleaned state piping diagram,

[Fig. 2] Purified state filtration tank,

[Figure 3] Backwash state piping diagram,

[Fig. 4] Backwash filtration tank,

FIG. 5 is an enlarged view of a portion of a filter medium bucket.

[Explanation of symbols]

1 bathtub 2 hot water 3 cleaning device 4 Hot water pipe 5 Filtration tank 7 Circulation pump 8 fountain pipe 9 Hot water discharge pipe 17 Hot water inlet 18 Hot water outlet 19 Filter media bucket 20 mesh plate 22 Backflush 23 Injection nozzle 26 Backwash pipe 27 gate 28 Check valve

Claims (2)

(57) [Claims] 1. Hot water in a bathtub is drawn from a hot water pipe by a circulation pump to flow into the filtration tank through a hot water inlet of the filtration tank.
The filter tank through the filter layer in the filter bucket attached to the filter tank, the mesh plate having a plurality of small holes for circulating hot water on the bottom surface of the filter bucket, and the gap between the filter bucket and the filter tank. Cleaning by returning the hot water from the hot water outlet to the inside of the bath with a spout pipe, and backwashing in which hot water pumped by the circulation pump is introduced from the hot water outlet of the filtration tank and discharged from the hot water inlet of the filtration tank to the outside of the bath In the apparatus for purifying bath water comprising: a pipe line connected to a part of a mesh plate formed with a plurality of small holes on the bottom surface of the filter medium bucket by an opening, and a plurality of small holes on the bottom surface of the filter medium bucket. A connecting pipe that connects the other opening to the hot water outlet is formed by branching a pipe line that is connected to another opening in the void to which the formed mesh plate is connected, and the connecting pipe is connected to the hot water outlet. An open / close valve is provided in the conduit that connects to the void to allow During purification, a pipe line connected to the void portion opens the on-off valve by the inflow of hot water from the hot water inlet so that all the hot water can flow from all the plurality of small holes of the mesh plate. At the same time, when backwashing, a pipe line connected to the void is provided so that hot water flows into the filter medium bucket through some small holes provided in the mesh plate. So that the on-off valve closes,
An apparatus for cleaning hot water in a bathtub, characterized in that when backwashing, the flow rate of hot water is increased to stir the filled filter medium in the filter medium bucket to wash the filter medium. 2. A small hole in the mesh plate, to which a pipe line is connected, for forming a connection state in which only a part of the mesh plate on the bottom surface of the filter medium bucket flows in, is formed as an injection hole having a predetermined angle. The cleaning device for bath water according to claim 1, wherein the filter medium filled in the filter medium bucket is agitated by jetting at a predetermined angle to wash the filter medium.