JPH086483Y2 - Bathtub filtering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a bathtub filtering device for filtering water (hot water or cold water) in a bathtub.

[Prior Art] In this type of bathtub filtration device, water in the bathtub is introduced into a filter by a pump, and filtered water is returned to the bathtub. Since clogging of the filter medium occurs with the continuation of this filtration operation,
Backwash as necessary. In the conventional filtering device, the filtration flow rate is integrated, and when the filtration flow rate reaches a predetermined amount, backwashing is performed.

[Problems to be Solved by the Invention] In the conventional filtering device, a flow meter is required, and the cost for constructing the device is high.

Further, in the case of a bath with a bubble jetting device, it is not always appropriate to perform backwashing of the filtering device based on the integrated value of the filtration flow rate.

That is, when the air bubble jetting device is operated to take a bath, the amount of soil components generated from the human skin is very large immediately after bathing, and after a while, the amount of soil generated is considerably reduced. Immediately after taking a bath, the adhered dirt on the skin surface and the dirt accumulated in the skin pores are released from the skin by the jet bubble flow and the ultrasonic waves generated from it, but after a while, the removal of this dirt is complete, and it no longer exists. It is considered that this is because the detachment of the dirty portion beyond that hardly occurs.

For this reason, the degree of contamination of bath water in a bath with a bubble ejecting device is proportional to the operating frequency of the bubble ejecting device, and is not necessarily proportional to the total operating time of the bubble ejecting device.

This bubble ejecting device is provided together with the filtering device in the circulation system path for circulating the water in the bathtub, and therefore the accumulation of dirt on the filtering device is not the total amount of filtered water passing through the filtering device.
Rather, it is proportional to the total number of operations of the filtration device.

From the above matters, even if the filter device is backwashed on the basis of the integrated value of the filtration flow rate of the filter device, it is difficult to achieve proper backwashing.

That is, if the backwashing is performed on the filtering device based on the integrated value of the filtration flow rate, in the case of a household having a long bathing time once, although the filtering device does not actually have much dirt,
I will backwash. On the contrary, in the case of a household where the bath time for one bath is short, the backwashing is not performed even though a considerable amount of dirt is actually accumulated in the filtering device.

[Means for Solving the Problems] A bathtub filtering device of the present invention is a circulation system passage with a pump for extracting hot water from the bathtub and returning it to the bathtub, and a bubble ejecting device and a filter provided in the circulation system passage. In the bathtub filtering device having the above, the number of times the pump is operated is integrated, and when the integrated number reaches a predetermined number, backwashing is performed or an alarm generator is activated.

[Operation] According to such a bathtub filtering device of the present invention, backwashing is performed or a backwashing alarm is generated when the number of times the pump is operated (for example, the number of times of ON operation) reaches a predetermined number.

In such a bathtub filtering device, a flow meter is not necessary.

Further, according to the present invention, the backwashing of the filtering device is performed when the integrated value of the number of times of operation of the bubble bath device reaches a predetermined number. Therefore, the backwashing is performed when the actual dirt accumulation amount of the filtering device reaches a predetermined amount. Will be done.

That is, the amount of dirt accumulated on the backwashing apparatus with one bubble bathing operation is almost the same whether the household has a long bathing time or a short bathing time. Integrating the number of times of operation of the pump is almost the same as integrating the accumulated amount of dirt on the filtration device. For this reason, the number of times the pump has been operated is accumulated, and when the accumulated number reaches a predetermined number, the filter device is backwashed so that the backwash is performed when the actual amount of accumulated dirt on the filter device reaches a predetermined amount. Will be executed.

Embodiments Embodiments will be described below with reference to the drawings.

FIG. 1 is a system diagram of a bathtub filtering device according to an embodiment of the present invention. On the side wall surface of the bathtub 10, an outlet 12 and a return port 14 for water in the bathtub are provided. The outflow port 12 is connected to a suction port 20 of a pump device 18 via a pipe 16. The return port 14 is connected to the discharge port 24 of the pump device 18 via a pipe 22. A pump body 18a is installed in the pump device 18, and is configured to suck water from the suction port 20 through the pipe 18b and to pump the water toward the discharge port 24 through the pipe 18c.

The portions of the suction port 20 and the discharge port 24 are a three-way joint and a four-way joint, and the suction port 20 is connected to the first electric three-way valve 26 by a pipe 28. The three-way valve 26 is in communication with the discharge port 24 via a pipe 30. Further, the three-way valve 26 is connected to a filtered water discharge port 36 of the filter 34 via a pipe 32. The inside of the filter 34 is formed by a filter tube 34a made of a porous material.
The inside of the filter tube 34a is
Is in communication with. The outside of the filter tube 34a is filled with a particulate filter material 34b made of ceramics such as alumina, activated carbon, and a particulate material carrying heavy metals.

The discharge port 24 is connected to a second electric three-way valve 40 via a pipe 38.
It is connected to the. The three-way valve 40 is connected to a filtered water receiving port 44 of the filter 34 via a short pipe 42. Three-way valve 40
Is connected to a pipe 46 for discharging backwash wastewater.

The bathtub filtering device according to the present embodiment also serves as a bubble jetting device for blowing bubble-containing water into the bathtub 10,
A nozzle device 48 for admixing air is provided at the connection portion of the return port 14 of the pipe 22, and an air introduction pipe 52 is connected to the nozzle device 48.

A switch 56 for performing a bubble ejection and filtration operation is provided on a handrail portion of the bathtub 10. A controller 58 is provided on the wall surface of the bathroom.
Is equipped with a backwash switch 60 and a backwash warning lamp 62. The backwash warning lamp 62 is for indicating that backwash should be performed when the switch 56 is operated a predetermined number of times or more. In order to perform a series of control, a control device 66 is installed so as to be capable of transmitting signals to the controller 58, the switch 56, the pump device 18, and the valves 26 and 40.

The operation of the filter device for a bath tub configured as described above will be described.

FIG. 2 shows the flow path selection when the filtration operation is performed. That is, when the switch 56 is pressed, the three-way valve 26 connects the pipe 32 and the pipe 28, and the three-way valve 40 selects the flow passage that connects the pipe 38 and the pipe 42. After such flow path selection, the pump body 18a operates. Then, the water in the bathtub 10 reaches the outlet 16 via the outlet 16 to the pipe 16 and the inlet 20, and further reaches the outlet 24 via the pipe 18b, the pump body 18a and the pipe 18c. A portion of the required ratio of water that has reached the discharge port 24 returns from the pipe 22 through the return port 14 into the bathtub 10. The remainder of the water that has reached the discharge port 24 flows into the filter 34 via the pipes 38 and 42. Then, after being filtered by the granular filter material 34b in the filter 34, it passes through the filter cylinder 34a, and the filtered water discharge port 3
6 and from the pipes 32 and 28 to the suction port 20. And, as described above, the pipe 18b, the pump body 18a,
It reaches the discharge port 24 through the pipe 18c.

In this way, the water in the bathtub 10 can be filtered.

When the pump body 18a operates and water flows through the nozzle device 48, air is introduced from the pipe 52 into the nozzle device 48, and bubbles are mixed into the water ejected from the return port 14. Therefore, the bubble ejection operation is performed in parallel with the filtering process.

When the switch 56 is operated again, the above operation is stopped.

When the number of times the switch 56 is operated reaches a predetermined number of times or more, the counter in the integrating device 66 generates a signal and the warning lamp 62 is turned on. When the person who sees this lamp lights up presses the backwash switch 60, the backwash operation is performed (the counter integration value is reset to 0 after the backwash signal is generated). FIG. 3 shows the flow path selection when performing the backwash operation. That is, when the backwash switch 60 is pressed, the three-way valve 26 is connected to the pipe 30,
The three-way valve 40 communicates with the pipes 42 and 46. After such flow path selection, the pump body 18a is operated.
Then, the water in the bathtub 10 reaches the intake port 20 via the outflow port 12, the pipe 16, and further, the pipe 18b, the pump body 18a, and the pipe 18
It reaches the discharge port 24 via c. Of the water reaching the discharge port 24, a required proportion returns to the bathtub 10 from the pipe 22. Note that air bubbles are ejected also during the backwash operation. The remaining water from the pipe 18c to the discharge port 24 is introduced into the filter 34 from the filtered water discharge port 36 through the pipes 30 and 32. The water further passes through the filter cylinder 34a, and then enters the packed bed of the granular filter material 34b to cause the packed bed of the granular filter material 34b to flow. afterwards,
Water is discharged through the receiving port 44 and the pipes 42 and 46. In this way, since the particulate filter medium 34b is flowed during this backwash, the granular filter medium 34b or the granular filter medium 34b and the filter tube 34a rub against each other, and the substances attached during filtration are sufficiently removed. Like

When introducing water into the bathtub 10 (filling it with water), the three-way valves 26 and 40 are switched so as to select the flow path at the time of backwashing shown in FIG. Then, when water gradually accumulates in the bathtub 10, the water in the bathtub 10 flows into the filter 34 through the pipes 16, 18b, 18c, 30, 32, and instead, the air in the filter 34 is piped. After being discharged through 42 and 46, the inside of the filter 34 is filled with water. Therefore, water is immediately circulated when the filtration operation is performed.

When draining water from the bathtub 10, the three-way valve 26,
The flow path selection of 40 is performed during the filtration operation shown in FIG. In this way, when the water level in the bathtub 10 has dropped to the level of the outlet 12, the air enters the filter 34 via the pipes 22, 38, 42, and the water in the filter 34 is the pipe 32, 28,
After passing through 16, it is discharged into the bathtub 10. When the discharge is completed, the valves 26 and 40 are automatically switched so as to achieve the flow path selection shown in FIG. 3, and the next standby state for filling the inside of the bath 10 is taken.

In the above embodiment, the lamp 62 is used as the alarm generating means, but a buzzer, a bell, a music box, or any other device can be used.

Although the backwash is performed by the manual switch in the above embodiment, the backwash may be automatically performed.

It should be noted that various types of filters other than those shown in the drawings may be used in the present invention.

[Effects] As described above, according to the bathtub filtration device of the present invention, the number of filtration operations is integrated to perform backwashing or an alarm is issued, and since a flow meter is not required, the device configuration is simple. Becomes

Further, when the actual amount of dirt accumulated in the filtering device reaches a predetermined amount, the filtering device is backwashed, and it is possible to filter the bath water so that it is always sufficiently clean.

[Brief description of drawings]

FIG. 1 is a system diagram of an embodiment of the present invention, FIG. 2 and FIG.
The figure is a diagram for explaining the operation. 10 ... Bathtub, 12 ... Outgoing port, 14 ... Return port, 18 ... Pump device, 26 ...
Three-way valve, 34 ... filter, 34a ... filter cylinder, 34b ... granular filter material,
40 ... Three-way valve.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location B01D 35/16 F24H 9/00 W (56) References JP-A-63-84613 (JP, A) JP-A-62-121881 (JP, A) JP-A-62-155409 (JP, A) Actually developed Shou 63-157218 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A bathtub filtering device having a circulation system passage with a pump for extracting hot water from the bathtub and returning it to the bathtub, and a bubble jetting device and a filter provided in this circulation system passage. A bathtub filtering device, characterized in that the number of operations is integrated, and when the integrated number reaches a predetermined number, backwashing is performed or an alarm generator is activated.