JPH05200213A - Automatic backwash device for the filtration section of the circulating bath - Google Patents

Abstract

(57) [Summary] [Purpose] To backwash the filtration section and maintain it in a good condition at all times so that such backwashing can be performed automatically. [Circulation] Circulation in which the bath water in the bathtub 1 is sucked from a suction port 9 by a circulation pump 8 and returned to the bathtub 1 from a return port 4 and is passed through a filter unit 30 to filter and purify the bathwater. It is a bathtub. A first water level detection sensor 31 is provided at a position upstream of the circulation pump 8 on the downstream side of the circulation pump 8 in the circulation path. The second water level detection sensor 32 is provided further above the first water level detection sensor 31. A backwash water channel means 33 is provided for backwashing the filtering section 30 for a certain period of time based on the water level detection results of the first water level detection sensor 31 and the second water level detection sensor 32, and draining the backwash water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic backwashing apparatus for a filtration section of a circulating bath, and more particularly, to backwash the filtration section so as to always maintain a good condition so that such backwashing can be performed automatically. It relates to the technology to be tried.

[0002]

2. Description of the Related Art Conventionally, in a circulating bath, in order to maintain the performance of the filtration section, the filtration section is backwashed (backwashed). In the past, backwashing was performed after hot water was sufficiently supplied to the bathtub. ,
The backwash was performed by operating the operation button for backwash.

[0003]

However, in such a structure, backwashing is performed manually by the operation button, and when the backwashing is troublesome and the backwashing is not performed, filtration is performed. There is a risk that the internal water of the part will not be replaced and that dirt will stick to the filter medium. During backwashing, the backwash drainage is discharged from the drain, and the water level in the bathtub lowers accordingly, which is a concern for bathers.

The present invention has been made in view of the above problems, and an object thereof is to always perform backwashing automatically when pouring water into a bathtub so that a user can backwash the filtration unit. It is an object of the present invention to provide an automatic backwashing device for a filtration section of a circulating bath that can always maintain the state of the filtration section in a good state without being aware of the above.

[0005]

According to the present invention, the bath water in the bathtub 1 is sucked from a suction port 9 by a circulation pump 8 and returned to the bathtub 1 from a return port 4 and passed through a filter section 30. It is a circulation bathtub for filtering and purifying the bath water, and a first water level detection sensor 31 is provided at a position higher than the circulation pump 8 on the downstream side of the circulation pump 8 in the circulation path. 2nd water level detection sensor 3
2 is provided, and the backwash water channel means 33 is provided for backwashing the filtration unit 30 for a certain period of time based on the water level detection results of the first water level detection sensor 31 and the second water level detection sensor 32, and discharging the backwash water. It is characterized by.

[0006]

As described above, the first water level detection sensor 31 is provided at a position higher than the circulation pump 8 on the downstream side of the circulation pump 8 in the circulation path, and the second water level detection is further higher than the first water level detection sensor 31. By providing the sensor 32, and by providing the backwash water passage means 33 for backwashing the filtration unit 30 for a certain time based on the water level detection results of the first water level detection sensor 31 and the second water level detection sensor 32, and draining the backwash water. ,
Based on the water level detection results of the first water level detection sensor 31 above the circulation pump 8 and the second water level detection sensor 32 above this, the backwash water channel means 33 is operated to perform backwash, that is, the bathtub. When water is injected into 1,
When the water level reaches the position of the second water level detection sensor 32, backwashing is automatically performed for a certain period of time, and the user does not need to be aware of backwashing, and the backwashing is poured into the bathtub 1. It is performed with clean water, and backwashing is always performed at the time of pouring water to maintain the filtration unit 30 in a good state at all times, and drainage in backwashing is not noticed by the user and is not a concern. ..

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings. 2 is a perspective view of the entire bath 1, and FIG. 3 is a pipeline diagram showing the entire system. A circulation pump 8 is arranged on the side of the bathtub 1, and a suction port 9 and the circulation pump 8 in the bathtub 1 are connected by a suction pipe 10. The circulation pump 8 removes hot water in the bathtub 1. Can be inhaled. On the inner wall surface of the bathtub 1, a plurality of back jet nozzles 11 and jet feet 12 for jetting hot water mixed with bubbles are provided in the bathtub 1. The jet nozzles 11 and 12 and the circulation pump 8 are provided.
Are connected by nozzle water supply pipes 13 and 14, so that hot water can be supplied to the injection nozzles 11 and 12.
The flange 2 of the bathtub 1 is provided with an air intake port 15,
The air inlet 15 and the injection nozzles 11 and 12 are connected to the air pipe 1
6 are connected to each other, whereby the injection nozzles 11 and 12 are connected.
Air can be supplied to. On the flange 2 of the bath tub 1, a pair of shoulder rest shower devices 17 are arranged at positions corresponding to the shoulders of the bather. The bath water is supplied to the shoulder shower device 17. Operation of bathtub 1 is remote control 2
The operation is performed at 0, and it is possible to select each operation pattern, adjust the strength of the flow rate, adjust the frequency of the jet flow change, and the like. A signal from the remote controller 20 is sent to the remote controller light receiving section and transmitted to the control section 22 housed in the circulation pump 8.

The bath water sucked through the suction port 9 is supplied from the circulation pump 8 to the water supply pipes 13 and 14 and the shoulder pad shower water supply pipe 18 via a flow rate control valve 23 for controlling the circulation flow rate inside the pump unit. It has become so.
The water supply pipes 13, 14 and the shoulder shower water supply pipe 18 are respectively provided with a back flow path switching valve 24 such as a motor valve, a foot flow path switching valve 25, and a shoulder flow path switching valve 26. The supply of hot water can be switched. The water supply pipe 13 is passed through the back flow path switching valve 24 and the foot flow path switching valve 25.
The bath water circulated through 14 is the injection nozzles 11, 1
At 2, the air is mixed with the air from the air pipe 16, and a jet stream containing bubbles is jetted into the bath 1. The bath water that has circulated through the shoulder channel switching valve 24 and the shoulder pad shower water supply pipe 18 is supplied to the shoulder pad shower device 17, and jetted from the shoulder pad nozzle 3 of the shoulder pad shower device 17. To be done.
The flow rate of the bath water circulated and supplied to the injection nozzles 11 and 12 and the shower device 17 for shoulder rests is controlled by the control unit 22.
It is possible to adjust the circulation flow rate by controlling 3, and the injection nozzles 11 and 12, the shower device 17 for shoulder rests.
Adjusting the strength of the jet from the shoulder pad nozzle 3
Various variations of jet flow can be obtained.

Then, as shown in FIG. 1, the circulation pump 8
On the other hand, a filtration water channel b provided with a filtration unit 30 is provided in parallel with the circulation route a, and a backwash water channel c is provided in parallel with the filtration unit 30 in this filtration water channel b through the first three-way valve 35.
The drainage channel D is connected to the filtered water channel B via the second three-way valve 34. Then, the communication between the filtered water channel b and the drainage channel d is cut off by the second three-way valve 34, and the filtered water channel b and the filtering portion 3
0, and the first three-way valve 35 is used to cut off the communication between the filtered water channel b and the backwash water channel c, and to open the filtered water channel b and the filtering part 30. In this way, the circulation path 8
A part of the bath water sent out from the tank is branched into a filtration path, filtered, and merged into the circulation path b. In this way, the bath water is filtered.

A first water level detection sensor 31 is provided downstream of the circulation pump 8 in the circulation path B. Also,
A second water level detection sensor 32 is provided further above the first water level detection sensor 31. Then, based on the water level detection results of the first water level detection sensor 31 and the second water level detection sensor 32, the filtration unit 30 is backwashed for a certain period of time to drain the backwash water. That is, when the water level at the location is detected by the first water level detection sensor 31, the detection result is input to the control unit 36, and the control unit 36 operates the first and second three-way valves 34, 35 by a control signal. , That is, the first
The three-way valve 35 connects the backwash water channel c and the filtered water channel b,
The second three-way valve 34 cuts off the communication between the filtration water passage B and the filtration unit 30, and also connects the filtration unit 30 and the exhaust passage 6,
Further, the flow rate control valve 23 is also narrowed down to the minimum, and thus the standby state for backwashing appears. And the second water level sensor 3
Based on the water level detection result of No. 2, the circulation pump 8 is operated for a fixed time (about 10 seconds) set by the timer, and most of the bath water sucked from the suction port 9 is guided as shown by a dotted arrow. The filter part 30 is backwashed through the backwash channel. The backwashed wastewater is drained from the drainage channel. After such backwashing is performed for a certain period of time, the circulation pump 8 is stopped, the first three-way valve 35 and the second three-way valve 34 are restored, and the backwashing mode ends. The filtration part 30 is provided with filtration beads in layers. And the filtering unit 30
Backwash water channel for backwashing water, first three-way valve 35, second three-way valve 3
4 is generically referred to as the backwash water channel means 33, but its configuration can be changed in various ways. An orifice 37 is formed in the backwash water channel c to suppress the backwash amount and prevent the filtration beads 38 from flowing out.

As described above, the first water level detection sensor 31 is provided at a position higher than the circulation pump 8 on the downstream side of the circulation pump 8 in the circulation path, and the second water level detection is further higher than the first water level detection sensor 31. First, the sensor 32 is provided.
Based on the water level detection results of the water level detection sensor 31 and the second water level detection sensor 32, the filtration unit 30 is backwashed for a certain period of time,
By providing the backwash water passage means 33 for draining the backwash water, it is possible to perform the reverse operation based on the water level detection results of the first water level detection sensor 31 higher than the circulation pump 8 and the second water level detection sensor 32 higher than this. When backwashing is performed by operating the wash passage means 33, that is, when water is poured into the bathtub 1, when the water level reaches the position of the second water level detection sensor 32, backwashing is automatically performed for a fixed time. The user does not need to be aware of backwashing, and the backwashing is performed with clean water that is poured into the bathtub 1, and the backwashing is always performed at the time of pouring so that the filtration unit 30 is always in a good state. And, the drainage water in the backwash was unnoticeable to the user and disregarded.

By the way, while pouring water into the bathtub 1, the filtering section 3
Although 0 is backwashed, the backwashing time is set to about 10 seconds, and as shown in FIG. 4, when the water level in the bathtub 1 is lowered and the second water level detection sensor 32 is turned off, , When the first water level detection sensor 31 is turned off,
Backwashing is not performed when the water level has dropped significantly for more than 10 seconds. Further, the circulation pump 8 is operated based on the detection result of the second water level detection sensor 32, and the circulation pump 8 is not idled.

[0013]

As described above, the first water level detection sensor is provided at a position above the circulation pump on the downstream side of the circulation pump in the circulation path, and the second water level detection sensor is provided further above the first water level detection sensor. Since the backwash water passage means for backwashing the filtering unit for a certain period of time based on the water level detection results of the first water level detection sensor and the second water level detection sensor and draining the backwash water is provided, it is higher than the circulation pump. Based on the water level detection results of the first water level detection sensor and the second water level detection sensor higher than the first water level detection sensor, the backwash water channel means is operated to perform backwashing, that is, when the water is poured into the bathtub, the second water level is detected. When the water level reaches the position of the detection sensor, backwashing is automatically performed for a certain period of time, and it is not necessary for the user to be aware of backwashing. Oko We, there is the advantage that it is possible to maintain the filtration section always by backwashing is performed at the time of injection is always good condition. And the drainage in the backwash is unknown to the user and is not a concern.

[Brief description of drawings]

FIG. 1 is a schematic circuit diagram of an embodiment of the present invention.

FIG. 2 is an overall perspective view of the above.

FIG. 3 is a piping diagram of the same.

FIG. 4 is a time chart of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath 8 Circulation pump 9 Suction port 30 Filtration section 31 First water level detection sensor 32 Second water level detection sensor 33 Backwash water passage means

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[Procedure amendment]

[Submission date] April 20, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. A circulation bath for inhaling the bath water from a suction port with a circulation pump, returning the water from the return port into the bath, and passing the filter to purify the bath water. ,
A first water level detection sensor is provided at a position higher than the circulation pump on the downstream side of the circulation pump in the circulation path, and a second water level detection sensor is provided further above the first water level detection sensor. (2) An automatic backwash device for a filtration section of a circulating bath, comprising backwash water passage means for backwashing the filtration section for a certain period of time based on the water level detection result of the water level detection sensor to drain the backwash water.