JPH06311941A - Bathtub with circulating and purifying device - Google Patents

Abstract

PURPOSE:To purify bathtub water by allowing it to circulate, and also, to allow a draft part in the bathtub main body to be scarcely soiled, and to facilitate the maintenance. CONSTITUTION:On the way of a circulating flow passage 14 for connecting the start and the end to a suction port 11 and a discharge part 12 of a bathtub main body 10, respectively, a circulating/purifying device (a) provided with a circulating pump P, a filter Q, etc., is provided, and also, a water level fluctuating means for varying a water level in the bathtub main body 10 is provided. Accordingly, bathtub water is purified, and also, it can be prevented that dirt adheres to a draft part in the bathtub main body, and the maintenance of a bathtub can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tub with a circulation purifying device which circulates and purifies bath water and makes the draft in the bath body less likely to be contaminated for easy maintenance.

[0002]

2. Description of the Related Art In recent years, there have been bathtubs installed in bathrooms to which various functions have been added in order to improve usability and comfort.

For example, a circulation passage is constructed by connecting the start end and the end to a suction portion and a discharge portion of a bath respectively, and a circulation pump, a filter, a sterilizer, a heater, etc. are provided in the middle of the passage. There is a bathtub that is provided with a circulation purification device that does not require the exchange of bath water for a long period of time.

This is because the bath water is forcibly circulated, the bath water is filtered and sterilized by a circulation purification device, and the temperature can be kept at a constant temperature by a heater. It is called time bath.

[0005]

However, the above-mentioned bathtub with the circulation purifying apparatus still has the following problems to be solved.

That is, the above-mentioned bath with a circulation purifying apparatus purifies the bath water while circulating the bath water in the apparatus and can be used for a long period of time. Since a large amount of bath water is stored for a long period of time, dirt is inevitably attached to the draft portion of the bath body.

Although it is not necessary to replace the bath water for a long period of time,
If the inside of the bathtub becomes contaminated, it must be cleaned. If the bathtub water is replaced every time, the function cannot be effectively utilized.

Therefore, it has been desired that maintenance such as cleaning of the inside of the bathtub is unnecessary for a long period of time.

It is an object of the present invention to provide a bath with a circulation purifying device which can solve the above problems.

[0010]

According to the present invention, there is provided a circulation purifying apparatus having a circulation pump, a filter and the like in the middle of a circulation flow path connecting a start end and an end to a suction section and a discharge section of a bath body, respectively. And a water level changing means for changing the water level in the body of the bathtub.

Further, according to the present invention, the water level changing means is configured to change the water level of the bath body by connecting a water storage tank to the bath body and moving the bath water of the water storage tank to the bath body. It has a feature.

Further, according to the present invention, the water level changing means increases or decreases the bath water of the bath body by connecting the water tank to the circulation passage and moving the bath water of the storage tank to the bath body. It is also characterized in that it is configured to change the water level.

Further, according to the present invention, the water level varying means is
Connect a water inlet with one end connected to a water source and a drain with one end connected to a drain, to the bathtub body or the circulation channel, and open / close the valves provided in the water inlet and drain respectively. Thus, the water level of the bathtub body is increased / decreased to change the water level.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bath A with a circulation purifying apparatus according to the present invention will be described in detail below with reference to an embodiment shown in the accompanying drawings.

(First Embodiment) FIG. 1 shows a bath A with a circulation purifier.
The overall structure of the above is schematically shown, and the bathtub body 10 is provided with a suction portion 11 on one inner side wall thereof, and a discharge portion 12 on the inner walls at both longitudinal ends thereof.

A circulation passage 14 is connected to the bath body 10, and a circulation purification device a is arranged in the middle of the circulation passage 14.

In this embodiment, the circulation purification device a is
In the casing 1, a circulation pump P, a filter Q, an ultraviolet sterilizer S, and a heating device H are arranged, and a controller 2 is provided.

The circulation pump P circulates the bath water between the circulation passage 14 and the bath body 10 so that the bath A with the circulation purifying device can be used as a so-called 24-hour bath.

The filter Q is equipped with a microbial carrier such as barley stone, for example, which propagates microorganisms in the carrier and purifies bath water using a biofilm formed by the growth of the microorganisms. Is.

The heating device H comprises an electric heater or the like,
The bath water temperature can be accurately heated and maintained at the set temperature.

The ultraviolet sterilizer S irradiates the bath water with ultraviolet rays for sterilization.

The control unit 2 is connected to an operation panel 3 mounted on a wall or the like in the vicinity of the bath body 10 and is also connected to the circulation pump P, the filter Q, the ultraviolet sterilizer S and the heating device H, respectively. is doing.

Further, the circulation purifying device a has a bathtub body.
It has a water level fluctuation means that periodically changes the water level within 10.

In this water level changing means, a water storage tank T is connected to the bath body 10 and the bath water in the water storage tank T is connected to the bath body.
It is characterized in that the water level of the bathtub main body 10 is changed by periodically moving it to 10.

In the present embodiment, the water level changing means is arranged such that the first and second flow path switching valves V ₁ and V are substantially located in the middle of the circulation flow path 14.
_The water level fluctuation flow path 4 is installed in parallel in the circulation flow path 14 via the water flow path 2, and the water tank T is provided in the middle of the water level fluctuation flow path 4.
And a pump P ₁ for adjusting the water level.

By driving the circulation pump P and the water level adjusting pump P ₁ and switching the flow paths of the first and second flow path switching valves V ₁ and V ₂ , the bath water in the bath body 10 is removed. The operation of inflowing into the water storage tank T and then returning the bath water from the water storage tank T to the bath body 10 is periodically performed.

Therefore, the bath water is periodically moved to the bath body 10, and the water level of the bath body 10 changes.

Further, the water tank T has an automatic air bleeding valve.
13 is installed. In addition, the first and second flow path switching valves
The V ₁ and V ₂ and the water level adjusting pump P ₁ are connected to the control unit 2.

By the way, the circulation channel 14 in the above-mentioned configuration
Is composed of a suction pipe 15 that is an upstream side of the circulation pump P and a discharge pipe 16 that is a downstream side of the circulation pump P.
15 is formed from the outside suction pipe 15a and the inside suction pipe 15b, and the discharge pipe 16 is formed from the outside discharge pipe 16a and the inside discharge pipe 16b.

Further, the water level fluctuation flow path 4 as a water level fluctuation means for cyclically changing the water level in the bathtub body 10 is installed in the middle of the above-mentioned in-apparatus discharge pipe 16b and is attached to the upstream side. The flow path switching valve V ₁ and the second flow path switching valve V ₂ mounted on the downstream side are connected to each other at one port and are provided in parallel with the circulation flow path 14.

A water storage tank T and a water level adjusting pump P ₁ are arranged in the water level changing flow path 4 from the upstream side thereof. In addition, normal circulation of bath water
It is performed through the circulation channel 14.

Further, the water storage tank T has a volume capable of storing the amount of water in the bathtub corresponding to the fluctuation range of the water level in the bathtub body 10.
Within 10 the water level can be lowered.

Then, by forcibly returning the bathtub water stored in the water storage tank T into the bathtub body 10 by the water level adjusting pump P ₁ , the water level of the bathtub water can be returned to the original position. I have to.

If such an operation is periodically performed, the bathtub body 10
Since the draft part of the bathtub water in the inside periodically fluctuates up and down, it becomes difficult to get dirty and maintenance of the bathtub body 10 becomes extremely easy.

Therefore, in this embodiment, in order to carry out such a water level fluctuation, the control unit 2 is provided with a timer function, and the flow path switching valves V ₁ and V ₁ are previously set at predetermined time intervals. ₂ is programmed to output an operation instruction signal to the water level adjustment pump P ₁ .

Alternatively, a water level detector or the like is provided in the bathtub main body 10 or the bathwater temporary storage tank T, and the control unit 2 causes the flow path switching valves V ₁ and V ₂ and the water level adjusting pump P to operate in response to the water level detection signal. ₁
It is also possible to periodically output the operation instruction signal.

It is also possible to set a normal operation mode or a water level fluctuation mode so that the user can selectively operate the operation panel 3.

Here, the bath A with the circulation purifying device having the above-mentioned configuration
In the following, the operation of varying the bath water level of the bath body 10 will be described below.

In FIG. 1, during normal operation, the bath water is circulated by the circulation pump P from the outside suction pipe 15a through the inside suction pipe 15b to the inside discharge pipe as shown by arrows f ₁ and f _2. 16b, the discharge pipe 16a from the equipment to the bathtub body 10
The water level of the bathtub water is stable at the normal water level X. At this time, the water storage tank T is, of course, empty.

After a lapse of a predetermined time (or when a water level variation mode is input to the operation panel 3), the control section 2 outputs a direction switching instruction signal to the first flow path switching valve V ₁ ,
The flow path of the bath water is changed to the water level fluctuation flow path 4 side. That is, the bath water flows in the direction indicated by the arrow f ₃ and flows into the water storage tank T.

As the bath water is stored in the water storage tank T, the water level in the bath body 10 lowers, and when a predetermined amount of bath water is stored in the water storage tank T, the water level in the bath body 10 becomes low. It goes down to the Y position.

After a lapse of a time sufficient to store a predetermined amount of bath water in the water storage tank T, the control unit 2 causes the first flow path switching valve
A direction switching instruction signal is output to V ₁ and the second flow path switching valve V ₂ , and a stop signal is sent to the circulation pump P to send a water level adjusting pump.
Drive signal is output to P ₁ .

That is, the first flow path switching valve V ₁ closes the water level fluctuation flow path 4 side and opens the second flow path switching valve V ₂ side, and at the same time, the circulation pump P is stopped, so that the bath water is stored in the water tank. It does not flow into T, and the water level adjusting pump P ₁ is driven to suck the bath water in the water storage tank T and forcibly send it to the bath body 10. At this time, since the second flow path switching valve V ₂ closes the first flow path switching valve V ₁ side and opens the water level fluctuation flow path 4 side, the bath water 10 flows from the water level fluctuation flow path 4 The water flows in the direction indicated by arrow f ₄ , flows into the bathtub body 10 through the in-device discharge pipe 16b and the out-device discharge pipe 16a, and the water level is restored.

By repeating the above-mentioned operation periodically, the water level in the bathtub body 10 can be constantly changed, and it is possible to prevent dirt from adhering to the draft portion.

Further, it is possible to reliably change the water level in the bathtub body 10 without wasting the bathtub water in the system of the bathtub A.

(Second Embodiment) Next, as a second embodiment,
The bath A with a circulation purifier having the configuration shown in FIG. 2 will be described. The first embodiment is the same as the first embodiment.
The same reference numerals as in the embodiment are used.

In this embodiment, there is a difference from the embodiment 1 in that the water level changing means is directly provided in the bath body 10, and as is clear from FIG. 2, the bath body 10 and the water level changing means are used. The water storage tank T is directly connected to the water level fluctuation passage 24.

An air bag 30 is provided in the water storage tank T, and an air pump 31 and an air vent valve 32 are connected to the air bag 30, respectively.

Therefore, when the bathtub body 10 is filled with bathtub water,
When the water tank T is also filled with bath water, the air pump 31 is driven in this state to send air to the air bag 30, and the volume of the air bag 30 is increased. Moves to the bathtub body 10 and the water level in the bathtub body 10 rises.

Next, the air vent valve 32 is operated to activate the air bag.
When air is evacuated from 30 and the volume of the air bag 30 is reduced, the bath water moves from the bath body 10 to the water storage tank T and the water level of the bath body 10 drops.

By cyclically repeating such an operation, the bath water can be periodically moved between the bath main body 10 and the water storage tank T to change the water level of the bath main body 10, so that the draft portion becomes dirty. It is possible to prevent the adhesion.

(Third Embodiment) Next, as a third embodiment,
The bath A with a circulation purifier having the configuration shown in FIG. 3 will be described. The same components as those in the first and second embodiments are designated by the same reference numerals as those in the first embodiment.

This embodiment is different from the second embodiment in that the water level changing means is connected to the circulation flow path 14 as clearly shown in FIG. The mounting method is different from that of the first embodiment.

That is, in the middle of the circulation channel 14, a water storage tank T, one end of which is open to the atmosphere, is communicatively connected via a water level adjusting pump P _1, and the bath water in the water storage tank T is periodically fed to the bath body 10. Increase the bath water in the bath body 10 by moving
It is characterized by a configuration in which the water level is changed by decreasing it.

As shown in FIG. 3, one end of the water channel 24 for changing the water level is connected to the middle of the circulation channel 14 and is connected to the water channel 24.
A water level adjusting pump P ₁ is provided at the end of the water passage 24, and a water storage tank T communicating with the atmosphere by an automatic air bleed valve 13 is provided at the end of the water passage 24. 6 is a circulation channel 14 and a water channel for water level fluctuation
It is a connection part with 24.

The operation of varying the bath water level in the bath body 10 in this embodiment will be described below.

In normal operation, when the circulation pump P operates and the bath water circulates in the circulation passage 14, the water level adjusting pump
Since P ₁ is still stopped, bath water flows into the bath water temporary storage tank T through the connecting portion 6.

Bath water flows into the tank T, and the water level of the bath body 10 is lowered by the amount of the water stored, and the water level becomes the normal water level Y ₁ .

When a predetermined time has passed, the control unit 2
Outputs a drive signal to the water level adjusting pump P ₁ , and the pump P ₁
Drives to suck the bath water from the bath water temporary storage tank T and forcibly send it to the circulation flow path 14.

When the bath water in the bath water temporary storage tank T circulates through the circulation passage 14 again, the water level of the bath body 10 rises to the high water level X ₁ .

Therefore, if the control unit 2 outputs an instruction signal to repeat the start / stop of driving of the water level adjusting pump P ₁ , the water level will constantly fluctuate, preventing dirt from adhering to the draft section. it can.

Further, the water level changing means does not require a flow path switching valve or the like, and since the piping is simple, the circulation purification device a
The water level change function can be added at low cost.

In this case as well, the water level changing operation can be performed constantly, and, for example, the normal operation mode, the water level changing mode, etc. can be set so that the operation panel 3 can selectively perform the operation. However, when selectively performed, in the normal operation mode, the water level in the bathtub body 10 is stabilized at the normal water level Y ₁ .

(Fourth Embodiment) Next, a bath A with a circulation purifying device having the structure shown in FIG. 4 will be described. Also in this embodiment, the same components as those in the previous embodiment are designated by the same reference numerals as those in the first embodiment.

This means that the water level changing means is
By connecting an inlet 34 connecting one end to a water source and a drain 35 connecting one end to a drain, and periodically opening and closing the valves respectively provided in the inlet 34 and the drain 35, the bath body The feature is that it is configured to change the water level by increasing / decreasing 10 bath water.

In this embodiment, the water inlet 34 and the drain 35 are
Each of them is connected and connected in the middle of the circulation flow path 14, and a first opening / closing valve V ₃ is installed in the middle of the water inlet path 34, and a second opening / closing valve V ₄ is installed in the middle of the drainage path 35. By switching the opening and closing of the valves V ₃ and V ₄ , the bath water in the bath body 10 is increased / decreased to change the water level.

In this embodiment, the suction pipe 15b in the apparatus is
Further, a water level detector 7 and a temperature detector 8 are attached from the bath body 10 side. The water level detector 7, the temperature detector 8, the first opening / closing valve V ₃ , and the second opening / closing valve V ₄ are connected to the control unit 2.

Further, a check valve 9 is attached to the water inlet 34 to prevent the bath water from flowing back to the water source.

As a water source, a water pipe or
A separately provided hot water supply device or the like may be used, and it is not specified as long as it can supply water or hot water.

Here, the operation of varying the bath water level in the bath body 10 in this embodiment will be described below.

In the normal operation, the first on-off valve V ₃ and the second on-off valve V ₄ are closed, and the bath water is circulated through the circulation passage 14 by the circulation pump P.

When a predetermined time elapses (or when the water level fluctuation mode is input to the operation panel 3), the control unit 2 outputs a valve opening instruction signal to the first opening / closing valve V ₃ and the circulation pump P is turned on. Stop.

When the first opening / closing valve V ₃ is opened, water or hot water from an external water source passes through the water inlet 24 and flows into the circulation passage 14.

The water level of the bathtub body 10 rises according to the amount of water from the water source, and the amount of ascending displacement is detected by the water level detector 7.

When the water level detector 7 detects that the water level has reached the set upper limit water level X ₂ and outputs a detection signal to the control unit 2, the control unit 2 sends a closing signal to the first on-off valve V ₃ . Output. Then, at the same time, or after a lapse of a fixed time, a valve opening signal is output to the second opening / closing valve V ₄ .

When the second opening / closing valve V ₄ is opened, the bath water is discharged from the circulation passage 14 through the second opening / closing valve V ₄ to the drainage channel 35, and the water level in the bath body 10 is lowered. . And
And it outputs a detection signal when the water level detector 7 has reached the lower limit water level Y ₂ set to the control unit 2, the control unit 2, the on-off valve
Output a valve closing signal to V ₄ . Therefore, the water level in the bathtub body 10 never falls below the lower limit water level Y ₂ .

In this embodiment, since water or hot water is newly supplied from the water source and the water level is changed by discharging the same amount as the supply amount, the adhesion of dirt to the draft portion in the bathtub body 10 is prevented. On the other hand, the bath water used for a long period of time can be replaced appropriately, and the bath water purification function can be enhanced.

In this embodiment as well, the water level changing operation can be performed constantly, and, for example, the normal operation mode, the water level changing mode, etc. are set so that the operation panel 3 selectively performs the operation. You can also

(Fifth Embodiment) Next, a bath A with a circulation purifying device having the structure shown in FIG. 5 will be described.

This is a system in which the bath A with a circulation purifying device is systematized, and the constitution thereof is as follows. Also in this embodiment, the same components as those in the previous embodiment are designated by the same reference numerals.

Further, in the bath A with circulation purifying apparatus according to this embodiment, as shown in FIG. 5, the systemized circulation purifying apparatus a and water heater K are arranged in the middle of the circulation passage 14. ing. Then, normally, the bath water can function as a bath for 24 hours by the circulation purification device a and the water heater K while circulating in the circulation passage 14.

The bath A with a circulation purifying apparatus of this embodiment can be further systemized with a new function (a bubble generating device or the like) to be installed later.

By the way, the water level varying means in this case connects the circulation passage 14 with the water inlet 34 whose one end is connected to the water source and the drainage passage 35 whose one end is connected to the drain port. It is characterized in that the valve provided in the drainage channel 35 is periodically opened and closed to increase / decrease the bath water of the bath body 10 to change the water level.

In the present embodiment, the water level changing means comprises an upstream side flow path switching valve V ₅ with a filter Q interposed in the middle of the circulation flow path 14 on the downstream side of the circulation pump P, and a downstream side flow path. The flow path switching valve V ₆ is provided, the upstream side flow path switching valve V ₅ is connected to the downstream side flow path switching valve V ₆ by a short-circuit flow path R, and the upstream side flow path switching valve is also connected. V ₅ is connected to a drainage channel 35, one end of which is connected to a drainage port, and at the middle of the circulation channel 14,
One end connected to a water source, and the inlet water passage 34 provided with a closing valve V ₄ in its middle communicatively connected, opening and closing operation of the opening and closing valve V _4, and the switching of the flow path switching valve V _5, V ₆ Depending on the operation, the bathtub body 10
The filter Q can be backwashed while changing the water level by increasing / decreasing the water in the bathtub.

In the present embodiment, the water inlet 34 is
It is arranged on the water heater K side and connected to the circulation flow path 14.

Here, the circulation purification device a and the water heater K will be described.

As shown in FIG. 5, the circulation purifying apparatus a includes an upstream side flow path switching valve V ₅ and an upstream side flow path switching valve V _{5 in} the middle of the apparatus discharge pipe 16b forming a part of the circulation flow path 14 in order from the upstream side. , Filter Q
And a downstream flow path switching valve V ₆ .

Then, the upstream side of the upstream side flow path switching valve V ₅ and the downstream side flow path switching valve V ₆ are connected by the short circuit flow path R, and the upstream side flow path switching valve V ₅ has a drain port (not shown). The drainage channel 35 connected to the above is connected and connected.

With the above-mentioned structure, each flow path switching valve V ₅ , V
_By the switching operation of ₆ , the bath water is circulated in the normal circulation flow path 14, the flow path for purifying by passing through the filter Q and the short-circuit flow path R are passed, and the filter Q is backwashed, It is possible to switch to a flow path for draining from the drain port.

A backflow prevention pipe 41 is provided between the upstream side of the in-apparatus suction pipe 15b and the downstream side of the in-apparatus discharge pipe 16b in parallel with the above-mentioned short-circuit flow path R.

A check valve 42 for blocking the flow from the downstream side to the upstream side is attached to the check flow prevention pipe 41,
The purified bath water is prevented from flowing backward to the suction pipe 15 side, and is smoothly circulated to the bath body 10 side.

Further, in the present embodiment, in the circulation purification device a, the suction pipe inside the device which is on the upstream side of the circulation pump P.
A water level detector 7 is arranged in the middle of 15b.

The upstream side and downstream side flow path switching valves V ₅ and V ₆ , the filter Q, the circulation pump P, and the water level detector 7 are
It is connected to the control unit 2 arranged in the circulation purification device a.

[0094] On the other hand, water heater K is apparatus outside the connecting channel 43 connected to the parallel state to the middle of the discharge pipe 16a, from upstream to downstream, in sequence, water heater circulation pump P ₂ and the heat exchanger 44 and are attached in series.

The circulating pump P ₂ for the water heater and the heat exchanger 44 are connected to the control unit 2a arranged in the water heater K. The controller 2a is connected to the operation panel 3.

Further, as shown in FIG. 1, the control unit 2 of the circulation purifying apparatus a and the control unit 2a of the water heater K are connected to each other.

Further, the circulation pump P ₂ for the water heater of the connection flow path 43
A water inlet 34 connected to a water source (not shown) is connected to the upstream side of, and a check valve 9 and an on-off valve V ₄ are attached from the water source side in the middle of the water inlet 34. The water inlet 34 constitutes a part of the water level changing means as described above.

The check valve 9 is for preventing the bath water from flowing back to the water source, and the opening / closing valve V ₄ is connected to the control section 2a.

Although the heat exchanger 44 is composed of the combustion burner and the combustion air supply fan in this embodiment, it may be composed of an electric heater like the heating device H of the first embodiment. Good.

Further, the circulation pump P ₂ for the water heater serves to circulate the bath water between the bath body 10 and the circulation flow passage 14 and the connection flow passage 43 when the bath water is heated. a
When the water heater K and the water heater K are used at the same time, it is used to draw the bath water flowing through the circulation passage 14 into the connection passage 43 by the circulation pump P and to pass the heat exchanger 44.

By the way, in FIG. 5, reference numerals 45 and 46 denote a water outlet side connection portion and a water inlet side connection portion of the external discharge pipe 16a of the circulation channel 14 and the connection channel 43, respectively. A check valve 47 is attached between the side connection portion 46 and the side connection portion 46.

The check valve 47 prevents the flow of bath water from the downstream side to the upstream side, and directly circulates the bath water treated by the circulation purifying apparatus a when the water heater K is not used. In addition to being able to flow in the flow passage 14, the bath water also passes through the connection flow passage 43, so that the bath water can be smoothly circulated.

On the other hand, when the water heater K is used, the bath water discharged from the water heater circulation pump P _{2 is the} outlet side connection portion 45.
Since it can be prevented from flowing into the connection flow path 43 through the water inlet side connection portion 46, the circulation flow path 14, and the connection flow path 43, and the bath body 10 is circulated to heat the bath water. Can be kept warm.

In the above-mentioned structure, the water level changing means in this embodiment is the short-circuit passage R provided in the circulation purification device a.
And the upstream side and downstream side flow path switching valves V ₅ and V ₆ disposed in the middle of the circulation flow path 14 and the drainage that is connected to the upstream side flow path switching valve V ₅ and is connected to the drain port. Channel 35 and connection channel for water heater K
Inlet 34 that connects to the middle of 43 and connects to a water source
In addition to the above, the on-off valve V ₄ is provided in the middle of the above-mentioned water inlet passage 34 to make it possible to change the water level of the bath body 10.

Now, the operation of varying the bath water level in the bath body 10 in this embodiment will be described below.

In normal operation, the on-off valve V ₄ is closed, the upstream flow passage switching valve V ₅ closes the drainage passage side, and the downstream flow passage switching valve V ₆ is short-circuited. The flow path R side is closed.

Therefore, the bath water advances in the directions of the arrows f ₅ and f ₆ shown in the figure by the circulation pump P, and is circulated in the circulation passage 14 while being purified by the filter Q.

At this time, if the water heater K operates, the bath water flows to the water heater K side by the water heater circulation pump P ₂ , is heated by the heat exchanger 44 and flows to the bath body 10. become.

When a predetermined time has elapsed (or when the water level fluctuation mode is input to the operation panel 3), the control section 2 outputs a valve opening instruction signal to the on-off valve V ₄ and the circulation pump P 4.
To stop.

When the opening / closing valve V ₄ is opened, water or hot water flows from the water source from the outside through the water inlet passage 34 and flows from the connection passage 43 into the circulation passage 14.

Water or hot water from the water source flows into the bathtub body 10 from the circulation flow path 14, the water level of the bathtub body 10 rises according to the amount of water from the water source, and the rising displacement amount is detected by the water level detector 7. .

When the water level detector 7 detects that the water level has reached the set upper limit water level X ₂ and outputs a detection signal to the control unit 2, the control unit 2 outputs a valve closing instruction signal to the on-off valve V ₄ . To do. At the same time, or after a lapse of a certain time, the circulation pump P side of the upstream side flow path switching valve V ₅ is closed,
The instruction signal for switching the flow path to the drain port side and the instruction signal for switching the flow path to the filter Q side are output by closing the downstream flow path switching valve V _{6 on} the bath body 10 side.

Therefore, the bath water advances in the directions of the arrows f ₇ and f ₈ shown in the figure, is drained while backwashing the filter Q, and the water level in the bath body 10 is lowered.

After a certain period of time, the control section 2 outputs an instruction signal for switching the flow paths of the upstream side flow path switching valve V ₅ and the downstream side flow path switching valve V ₆ again, and the bath water is indicated by the arrow f ₅ , f ₆ to stop the drainage of the bath water and circulate the circulation passage 14.

Also in this embodiment, as in the fourth embodiment, water or hot water is newly replenished from the water source and the water level is changed by discharging the same amount as the replenishment amount.
While preventing dirt from adhering to the draft portion of the inside, the bath water used for a long period of time can be replaced appropriately, and the purification function of the bath water can be enhanced.

Further, the filter Q is connected to the upstream / downstream side flow path switching valve.
Since it is interposed between V ₅ and V ₆ , backwashing can be performed at the same time when the bath water is discharged to lower the water level, facilitating maintenance of the filter Q and extending its service life. Therefore, the running cost of the circulation purification device a can be reduced.

The water level changing operation can be performed constantly, or the normal operation mode, the water level changing mode, etc. can be set and selectively operated by the operation panel 3. This is similar to the fourth embodiment.

[0118]

[Effect] The present invention has the following effects.

A circulation purification device equipped with a pump, a filter, etc. is arranged in the middle of the circulation flow path connecting the start end and the end to the suction part and the discharge part of the bath body, and the water level in the bath body is increased. By providing the water level changing means for changing the water level, it is possible to purify the bath water and prevent dirt from adhering to the draft portion in the bath body, and the maintenance of the bath can be facilitated.

Further, the water level changing means is configured to change the water level of the bathtub body by connecting the water storage tank to the bathtub body and moving the bathtub water of the water storage tank to the bathtub body. The water level can be reliably changed using the bath water, and when the water level of the bath body is increased / decreased to change the water level, a flow path switching valve etc. is not required. Moreover, since the piping is simple, the cost can be reduced.

Further, the water level changing means connects to the body of the bath with an inlet for connecting one end to a water source and a drain for connecting one end to a drain, and valves provided in the inlet and the drain respectively. By opening and closing, you can increase the bath water in the bath itself.
Since it is configured to reduce and change the water level, new water or hot water is replenished from the water source, and the water level is changed by discharging the same amount as the replenishment amount, and the water level in the bathtub body becomes dirty. While preventing the adhesion, the bath water used for a long period of time can be replaced appropriately, and the purification function of the bath water can be enhanced.

By connecting the water inlet and drainage channels to the circulation channel, the filter can be backwashed, and the filter can be easily maintained and has a long life. The running cost of the circulation purification device can be reduced.

[Brief description of drawings]

FIG. 1 is a conceptual configuration explanatory diagram of a bath with a circulation purifying apparatus according to a first embodiment of the present invention.

FIG. 2 is a conceptual configuration explanatory diagram of a bath with a circulation purifying apparatus according to a second embodiment of the present invention.

FIG. 3 is a conceptual configuration explanatory diagram of a bath with a circulation purifying apparatus according to a third embodiment of the present invention.

FIG. 4 is a conceptual configuration explanatory diagram of a bath with a circulation purifying apparatus according to a fourth embodiment of the present invention.

FIG. 5 is a conceptual configuration explanatory diagram of a bath with a circulation purifying apparatus according to a fifth embodiment of the present invention.

[Explanation of symbols]

 10 Bath body 11 Suction part 12 Discharge part 14 Circulation flow path 34 Inlet path 35 Discharge path a Circulation purification device T Water tank

Claims (5)

[Claims] 1. A circulation pump (P) and a filter are provided in the middle of a circulation flow path (14) that connects the start end and the end to a suction part (11) and a discharge part (12) of a bath body (10), respectively. A bath with a circulation purifier characterized by including a circulation purifier (a) including (Q) and the like, and a water level changing means for changing the water level in the bath body (10). 2. The water level changing means comprises connecting a water storage tank (T) to the bathtub body (10), and moving the bathwater of the water storage tank (T) to the bathtub body (10). The bath with a circulation purifier according to claim 1, wherein the water level of 10) is configured to be changed. 3. The water level changing means connects a water storage tank (T) to the circulation flow path (14), and moves the bath water of the water storage tank (T) to the bath body (10) to thereby form a bath body. The bath with a circulation purifying device according to claim 1, wherein the bath water is increased / decreased to change the water level. 4. The water level changing means is provided in the bathtub body (10),
Connect the water inlet (34) whose one end is connected to the water source and the water drain (35) whose one end is connected to the drain, and connect the water inlet (34) and the water drain.
The circulation purifying apparatus according to claim 1, wherein the water level is changed by increasing / decreasing the bath water of the bath body (10) by opening / closing the valves provided in the (35) respectively. Bathtub. 5. The water level changing means comprises:
The water inlet (34) whose one end is connected to the water source and the drainage canal (35) whose one end is connected to the drain are connected, and the water inlet (34) and the drainage canal (3
By opening and closing the valves provided in 5), the bathtub body
The bath with a circulation purifying device according to claim 1, wherein the bath water is increased / decreased to change the water level.