JPH10277548A - Bathtub warm water circulating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathtub warm water circulating apparatus capable of rapidly purifying warm water even when many persons take a bath within a short time or a heavily dirty person takes a bath. SOLUTION: A means for purifying warm water W is provided with a biological purifying tank 21 purifying warm water by biochemical treatment and a membrane filter tank 22 purifying warm water W by physical treatment. By this constitution, more effective purifying treatment can be freely selected and warm water W in a bathtub 12 can be kept clean. At a time of usual operation, the warm water W sucked by a pump 16 is passed through only the biological purifying tank 21 slow in the advance of clogging. When many persons take a bath within a short time or a heavily dirty person after sports takes a bath, the warm water W is passed through the membrane filter tank 22 capable of purifying impurities within a short time. That is, the purifying tanks 21, 22 through which the warm water W passes can be changed over corresponding to a use state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath tub hot water circulating apparatus for sucking hot water in a bath tub to remove impurities and then discharging the hot water into the bath tub.

[0002]

2. Description of the Related Art Conventionally, a bath tub hot water circulating apparatus sucks hot water in a bath tub by a pump, purifies the hot water in a purifying tank, heats the hot water to a predetermined temperature by a heater, and discharges the hot water to the bath tub again. Thereby, the heated and purified hot water is circulated in the bathtub.

As the septic tank, one using barley stone for removing impurities by a biochemical treatment is generally used. When hot water passes through the septic tank, the organic matter dissolved in the hot water (which causes turbidity and slime of the hot water) is biochemically treated by the action of microorganisms and the insoluble scale in the hot water , General germs are removed.

[0004]

However, the bath tub hot water circulation apparatus in the above-mentioned prior art has the following problems.

[0005] That is, when a large number of people take a bath in a short time, the hot water purification by the biochemical treatment cannot quickly purify the hot water to a desired level.
A similar problem also occurs when a person who is very dirty after sports takes a bath. Therefore, there was a problem of giving bathers discomfort.

The present invention has been made in order to solve the above-mentioned problem, and has an object to solve the problem even when a large number of people take a bath in a short time or when a person who is very dirty gets a bath. Another object of the present invention is to provide a bath tub hot water circulating device that can quickly purify hot water.

[0007]

According to the first aspect of the present invention, there is provided a biochemical treatment purifying means for purifying hot water in a bathtub sucked by a pump by a biochemical treatment. The gist of the invention is to provide a physical treatment and purification means for purifying hot water in a bathtub sucked by a pump by physical treatment.

[0008] According to a second aspect of the present invention, in the first aspect of the present invention, the hot water sucked by the pump is passed through only the biochemical purification unit or only the physical purification unit. The gist of the present invention is to provide a channel switching means for discharging the fluid into the bathtub again.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a bathtub hot water circulation device 11 includes a main body case 13 installed above a bathtub 12, and a suction pipe 14 exposed from the main body case 13.
And a discharge pipe 15 and the like. A pump 16 for circulating hot water W in the bathtub 12, a purifying tank 17 as a purifying means for purifying the sucked hot water W, a heating tank 18 for heating the sucked hot water W, a sodium hypochlorite Is stored. An opening / closing valve (not shown) is attached to the container 19 for storing the sodium hypochlorite so that the sodium hypochlorite in the container 19 is supplied into the bathtub 12 with the opening of the opening / closing valve. It has become. The on-off valve is controlled to open and close by a controller.

As shown in FIG. 2, the septic tank 17 is composed of a biological purifying tank 21 as a biochemical purifying means and a membrane filter tank 22 as a physical purifying means.
It has a tank. In the present embodiment, the biological septic tank 21
Is made of barley stone. A hollow fiber membrane (having a pore diameter of 0.04 μm) is used for the membrane filter tank 22. The discharge port 21b of the biological purification tank 21 and the inflow port 22a of the membrane filter tank 22 are connected by a tank connection pipe 23. An inflow pipe 2 is provided between the discharge port of the pump 16 and the inflow port 21a of the biological septic tank 21.
4. The discharge pipe 15 is connected to a discharge port 22b of the membrane filter tank 22.

A first switching valve 31 and a second switching valve 32 are connected downstream of the first switching valve 31 on the inflow pipe 24. Further, a third switching valve 3 is provided in the tank connecting pipe 23.
3 are connected. The third switching valve 33 has a drain pipe 25.
Is connected. The drain pipe 25 and the second switching valve 32 are connected by a drain connection pipe 26. Also,
A fourth switch 34 is connected to the discharge pipe 15.
The first switching valve 31 and the fourth switching valve 34 are connected by a bypass pipe 27. A fifth switching valve 35 is connected to the bypass pipe 27. The fifth switching valve 35 and the third switching valve 33 are connected by a branch pipe 28. The switching valves 31 to 35 are switch-controlled by a controller. In the present embodiment, the switching valves 31 to 35 constitute flow path switching means.

Next, the operation of the present embodiment will be described.
First, the normal circulation operation will be described. As shown in FIG. 2, during normal operation, the controller switches the first switching valve 31 and the second switching valve 32 to communicate between the discharge port of the pump 16 and the inflow port 21 a of the biological purification tank 21. The third switching valve 33 and the fifth switching valve 35 are switched to communicate between the tank connecting pipe 23 and the bypass pipe 27. Further, the controller switches the fourth switching valve 34 to make communication between the discharge pipe 15 and the bypass pipe 27.

In this state, the pump 16 is driven and the bathtub 1 is turned on.
When the hot water W in 2 is sucked by the pump 16, the hot water W is pumped into the biological purification tank 21 via the inflow pipe 24. After flowing through the biological purification tank 21, the hot water W is discharged into the bathtub 12 through the flow path of the tank connection pipe 23 → the branch pipe 28 → the bypass pipe 27 → the discharge pipe 15. Hot water W is supplied to the biological septic tank 2
1, soluble proteins and fats that cause turbidity and slime of the warm water W are biochemically treated and purified by the action of microorganisms. Impurities are purified.

Next, the operation during the forced purification operation will be described. As shown in FIG. 3, during the forced purification operation, the controller switches the first switching valve 31, the third switching valve 33, and the fifth switching valve 33.
The switching valve 35 is switched to allow communication between the discharge port of the pump 16 and the inflow port 22 a of the membrane filter tank 22. Further, the controller switches the fourth switching valve 34 so that the discharge port 22 b of the membrane filter tank 22 and the discharge pipe 15
To communicate with

In this state, the pump 16 is driven and the bathtub 1
When the hot water W in the pump 2 is sucked by the pump 16, the hot water W passes through the inflow pipe 24 and passes through the membrane filter tank 22.
Is pumped into. After flowing through the biological purification tank 21, the hot water W is discharged into the bathtub 12 through the flow path of the tank connection pipe 23 → the membrane filter tank 22 → the discharge pipe 15. By passing the hot water W through the membrane filter tank 22, impurities can be purified. The forced purification operation is performed when a user operates a forced operation switch (not shown).

Next, the sterilization operation will be described. As shown in FIG. 4, during the sterilization operation, the controller switches the first switching valve 31, the fifth switching valve 35, and the fourth switching valve to communicate between the discharge port of the pump 16 and the bypass pipe 27. The communication between the bypass pipe 27 and the discharge pipe 15 is established. Further, the controller opens the on-off valve attached to the container 19 and supplies a predetermined amount of sodium hypochlorite into the bathtub 12.

When the hot water W in the bathtub 12 is sucked by the pump 16, the hot water W is supplied from the inflow pipe 24 to the bypass pipe 2.
7 → discharged into the bathtub 12 through the flow path of the discharge pipe 15. As described above, during the sterilization operation, the hot water W is discharged into the bathtub 12 without passing through both the purification tanks 21 and 22. That is, during the sterilization operation (including the predetermined time after the end of the sterilization operation), when the passage of the hot water W is made to pass through the biological purification tank 21,
The warm water W mixed with sodium hypochlorite affects the biological septic tank 21 to some extent. In this case, the number of microorganisms in the biological purification tank 21 after the sterilization operation decreases, and the purification function temporarily decreases. In this case, when switching to the normal operation, the warm water W discharged to the bathtub 12 becomes turbid. However, in the present embodiment, during the sterilization operation, the hot water W is prevented from passing through the biological purification tank 21, so that it is possible to prevent a decrease in the number of microorganisms in the biological purification tank 21. W can be reliably purified.

Next, the operation during the backwashing operation of the biological septic tank will be described. As shown in FIG. 5, in the biological septic tank reverse cleaning operation, the controller switches the first switching valve 31, the fifth switching valve 35,
By switching the third switching valve 33 and the second switching valve 32, the flow path of the hot water W is changed to the inflow pipe 24 →→ the bypass pipe 27 → the branch pipe 28 →
The water is drained to the outside through the flow path of the tank connection pipe 23 → the biological purification tank 21 → the drain connection pipe 26 → the drain pipe 25.

By performing the backwashing operation of the biological purification tank, impurities such as clogged scale and the like in the biological purification tank 21 are discharged to the outside together with the hot water W, so that the purification function of the biological purification tank 21 can be prevented from lowering.

Next, the operation during the backwashing operation of the membrane filter tank will be described. As shown in FIG. 6, in the membrane filter tank backwashing operation, the controller operates the first switching valve 3.
1, fifth switching valve 35, fourth switching valve 34, third switching valve 33
Is switched to drive the inflow pipe 24 and the membrane filter tank 22.
Of the membrane filter tank 22, and communication between the drain pipe 25 and the inflow port 22b of the membrane filter tank 22. When the hot water W in the bathtub 12 is sucked by the pump 16, the hot water W is supplied from the inflow pipe 24 to the bypass pipe 2.
7 → the membrane filter tank 22 → the tank connection pipe 23 → the drain water 25 is drained to the outside through the flow path. By performing the membrane filter tank backwashing operation, impurities such as bacteria and scale attached to the hollow fiber membrane are separated from the hollow fiber membrane together with the warm water W and discharged to the outside. As a result, it is possible to prevent the purification function from being deteriorated due to clogging of the hollow fiber membrane in the membrane filter tank 22.

In the present embodiment, the following effects can be obtained by configuring the bath tub hot water circulation device 11 as described above. In the present embodiment, as the means for purifying the hot water W, the biological purification tank 21 for purifying the hot water by biochemical treatment and the membrane filter tank 22 for purifying the hot water W by the physical treatment are provided. This makes it possible to purify impurities that cannot be processed by only one of the purifying means, and further keep the hot water W in the bathtub 12 clean.

During normal operation, the warm water W sucked by the pump 16 is removed from the biological purification tank 21 whose clogging progresses slowly.
Only passed. In addition, when a large number of people take a bath in a short time or a person who is very dirty after sports takes a bath, only the membrane filter tank 22 capable of purifying impurities in a short time is passed. That is, in the case of the normal operation with less contamination, the purification is sufficiently performed only by passing the hot water W through only the biological purification tank 21. Conversely, when the hot water W is passed through the physical treatment and purification means in the normal operation, the hot water W can be quickly purified. However, the membrane filter tank 22 is rapidly clogged. Also, when the membrane filter tank 22 is used, the membrane filter tank 22 is immediately clogged, and the maintenance becomes troublesome. However, in the present embodiment, the septic tanks 21 and 21 through which the hot water W passes according to the use situation.
By enabling the switching of 2, the clogging of the membrane filter tank 22 at an early stage can be prevented, and the hot water W in the bathtub 12 can always be kept clean.

The above embodiment may be modified and embodied as follows. In the above embodiment, each valve is automatically switched by the controller, but the user may manually switch each valve.

In the above embodiment, during the sterilization operation,
The flow path was switched so that the hot water W did not pass through the septic tank (biological septic tank 21 and membrane filter tank 22) 17, but the hot water W was supplied to both the septic tanks 21 and 22 or one of the septic tanks 2.
It may be embodied by circulating so that only 1 and 22 pass.

In the above embodiment, the sodium hypochlorite is stored in the container 19 of the apparatus 11 and is automatically injected into the bathtub 12 by the controller. It may be configured to be injected into the bathtub 12.

A sand filter tank for physically treating impurities in the bathtub W may be arranged upstream of the biological purification tank 21 for realization.

[0027]

According to the first aspect of the present invention, the functions of the biochemical treatment purifying means for purifying hot water by biochemical treatment and the physical treatment purifying means for purifying hot water by physical treatment are different from each other. By providing two types of purifying means, a more effective purifying process can be freely selected according to a bathing state, and a comfortable bathing can be enjoyed.

According to the invention described in claim 2, according to claim 1,
In addition to the effects of the invention described in the above, the hot water sucked by the pump by the flow path switching means is passed through only the biochemical treatment purification means or only the physical treatment purification means and discharged again into the bathtub. did. For example, under normal operating conditions, hot water is passed only through biochemical treatment and purification means with less clogging. In addition, when a large number of people take a bath in a short time or when a person who is very dirty after sports takes a bath, etc.
Pass only through the physical treatment purification means capable of purifying impurities in a short time. As a result, quick purification of hot water becomes possible.

That is, in the case of the normal operation with less contamination, the purification is sufficiently performed only by passing the hot water through the biochemical treatment and purification means. Conversely, when hot water is passed through the physical treatment / purification means in normal operation, the hot water can be purified quickly, but the physical treatment / purification means progresses quickly in clogging. When used, its maintenance becomes troublesome. However, in the present invention, it is possible to prevent the clogging of the physical treatment / purifying means at an early stage by enabling the switching of the purifying means through which the hot water passes according to the use condition, and to always keep the hot water in the bathtub clean. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a bathtub hot water circulation device according to an embodiment.

FIG. 2 is a circuit diagram of a bathtub hot water circulation device showing a hot water flow path during normal operation.

FIG. 3 is a circuit diagram of a bath tub hot water circulation device showing a hot water flow path during a forced purification operation.

FIG. 4 is a circuit diagram of a bathtub hot water circulation device showing a hot water flow path during a sterilization operation.

FIG. 5 is a circuit diagram of a bath tub hot water circulation device showing a hot water flow path during a biological purification tank backwash operation.

FIG. 6 is a circuit diagram of a bath tub hot water circulation device showing a hot water flow path during a membrane filter tank backwash operation.

[Explanation of symbols]

16 pump, 12 bathtub, W hot water, 21 biological purification tank as biochemical purification means, 22 membrane filter tank as physical purification means, 31, 32,
33, 34, 35: switching valves constituting flow path switching means.

Claims (2)

[Claims] 1. A biochemical treatment purifying means for purifying hot water in a bathtub sucked by a pump by biochemical treatment, and a physical treatment purifying means for purifying hot water in a bathtub sucked by a pump by physical treatment. Bath water circulation device equipped with. 2. The hot water sucked by the pump,
The bathtub hot water circulation device according to claim 1, further comprising a flow path switching unit that passes only the biochemical treatment purification unit or only the physical treatment purification unit and discharges the mixture into the bathtub again.