JPH06126109A - Method of controlling operation of circulation pump unit with built-in filter having backwash flow path - Google Patents

Abstract

(57) [Summary] [Purpose] Perform backwash operation without increasing the number of components. [Constitution] The bath 4 and the circulation pump unit 1 are connected by a forward pipe 6 and a return pipe 7, and the pump 2 and the filter 3 are connected by a filtration flow passage 12 and a backwash flow passage 13. The switching operation is started to start the backwash operation from the circulation operation, the pump 2 is turned off, the filtration switching valve 18 and then the flow path switching valve 15 are operated, and the flow path switching operation is started. Then, after the time required for the switching operation of the filtration switching valve 18 and the flow channel switching valve 15 elapses, the flow channel opening / closing valve 1
1 is closed, and the backwash flow path 13 is formed. Flow path on-off valve 11
When the flow path shut-off operation time has passed, the pump 2 is turned on, the bath water is introduced into the filter 3 through the backwash flow path 13, and the backwash is performed. [Effect] It is possible to avoid complication of the device and increase in cost, and maintenance becomes simple.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation operation for supplying and circulating bath water as a jet jet to a bath, a filtration operation for introducing bath water into a filter for filtration, and a backwashing of the filter. The present invention relates to an operation control method of a circulation pump unit with a built-in filter, which has a function of executing a backwash operation for performing the above.

[0002]

2. Description of the Related Art For example, a bathtub device equipped with a filter so that circulating bath water is introduced into the filter for filtration has already been found. In such a device, since the filter is clogged and the filtering ability is deteriorated while it is used several times, the filtering ability is maintained by backwashing the filter occasionally. As such a device, recently, along with the circulation operation of bath water, the bath water is purified by a purifier, and when backwashing the purifier, a dedicated backwash pump is used to clean water from a separate water tank. Has been proposed, and is further provided with circulating water heating means, and configured to display the clogging of the purifier according to the temperature rise rate of the bath water (Japanese Patent Laid-Open No. 2-227109). Issue). According to such a system,
Since clean water from a separately provided water tank is used for backwashing the purifier, effective backwashing is possible, and when switching from normal purification operation to backwashing operation, the flow path for that is switched. The operation of the backwash pump is delayed until the water is formed, so the backwash water does not flow into the bathtub. Further, since the user can easily know the clogging of the purifier, it is possible to effectively clean the purifier at an appropriate time.

[0003]

However, in the above-mentioned system, the number of components such as a water tank for temporarily storing clean water, a dedicated backwash pump, circulating water heating means, etc. is increased,
Since the system, mechanism, etc. become complicated, cost increase is inevitable. Moreover, since the system and mechanism are complicated, it becomes difficult to handle the system itself and maintain the entire system. The present invention has been made in order to improve such a problem, and backwashing is made possible to exhibit the original function of the system by rationally setting the control procedure without increasing the number of components. An object of the present invention is to provide a method for controlling the operation of a circulation pump unit with a built-in filter having a flow path.

[0004]

In order to solve the above-mentioned problems, the present invention provides a circulation operation in which bath water is supplied to the bath as a jet jet and is circulated while a circulation pump is operated, and the bath water is filtered. A filtration operation in which the water is introduced into the filter through a channel to perform filtration, and a backwash operation in which bath water is introduced into the filter from the opposite side by switching and forming a backwash flow path to backwash the filter. In the circulation pump unit having the function of executing the above, the circulation pump is forcibly stopped during the circulation operation and the circulation pump is stopped, the flow passage is switched from the filtration flow passage to the backwash flow passage, and then the bath is It is characterized in that the circulation pump is operated and the backwash operation is executed after the supply flow path is shut off and the flow path switching is completed.

[0005]

The bath water is supplied to the bath as a jet jet and is circulated while being circulated, while the bath water is introduced into the filter through the filtration flow path to perform the filtration. Here, in order to perform backwashing of the filter during the circulation operation, first, the circulation pump is stopped simultaneously with the forced stop. Then, the filtration flow path is switched to a backwash flow path in which bath water is introduced into the filter from the opposite side. Then, the flow path for returning the bath water to the bathtub is cut off. When the filtration channel is completely switched to the backwash channel, the circulation pump can be operated to perform the backwash operation. At this time, since the flow path for returning the bath water to the bath is cut off, the bath water does not return back into the bath.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bathtub system for carrying out the method of controlling the operation of a circulation pump unit with a built-in filter having a backwash passage according to the present invention will be described in detail below with reference to an embodiment. In FIG. 1, reference numeral 1 indicates a circulation pump unit, which includes a pump 2 for circulating bath water, a filter 3 for filtering the bath water, and a water level switch 5 for detecting the water level in the bath 4. And are built in.

The bath 4 and the circulation pump unit 1 are
A communication connection is made via a forward pipe 6 and a return pipe 7.
That is, in the circulation pump unit 1, the pump 2
The forward pipe 6 and the return pipe 7 are connected to the. The outflow pipe 6 is branched into first and second outflow pipes 6 a and 6 b, which are respectively connected to the bath 4 via a circulation fitting 8. The circulation fitting 8 has a nozzle portion 9 facing the inner wall of the bathtub 4, and an air supply pipe 10 is connected to the nozzle portion 9. The water level switch 5 is connected to the outflow pipe 6, and the first and second
A passage opening / closing valve 11 is interposed in each of the outflow pipes 6a and 6b.

Next, the pump 2 and the filter 3 are connected to each other by a filtration channel 12 and a backwash channel 13. That is, the filtration flow path 12 includes a filtration branch pipe 14 branched from the outflow pipe 6, a filtration introduction pipe 16 that reaches the filter 3 via a flow path switching valve 15 that is a two-way valve, and a filter 3 downstream side. It is composed of a filtration outlet pipe 17 and a filtration reflux pipe 19 which reaches the return pipe 7 through a filtration switching valve 18 which is a two-way valve. Further, the backwash flow passage 13 includes the flow passage switching valve 15 and the filtration switching valve 1.
8 is formed by the switching operation of 8, and the filtration branch pipe 14 branched from the outflow pipe 6, the backwash supply pipe 20 reaching the filtration switching valve 18, and the filtration reaching the downstream side of the filter 3 via the filtration switching valve 18. It consists of a lead-out pipe 17. A drain pipe 21 is connected to the flow path switching valve 15 on the upstream side of the filter 3. In the circulation pump unit 1, the air supply pipe 1
An air solenoid valve 22 is interposed at 0.

The circulation pump unit 1 has been described above. However, each constituent element of the circulation pump unit 1 is configured to operate under the control of the controller 23.
An operation signal is given to the controller 23 by the remote operation means 24. That is, the controller 23 is set to perform a circulation operation, a filtration operation, and a backwash operation by giving an operation signal from the remote operation means 24. In order to perform the circulation operation, the flow path opening / closing valve 11 in the first and second outflow pipes 6a and 6b is opened and the pump 2 is turned on. If the air solenoid valve 22 is opened, the bubble bath operation is started. In the filtration operation, the flow path switching valve 15 and the filtration switching valve 18
Is switched to form the filtration channel 12, and the pump 2 is turned on. This filtration operation can be executed simultaneously with the circulation operation. In the backwash operation, the flow path switching valve 15 and the filtration switching valve 18
Is switched to form the backwash flow passage 13 and the pump 2 is turned on. The circulation operation can be set to automatically stop after a lapse of a predetermined time (for example, 15 minutes) from the start of the operation. The 15 minutes is based on the assumption that one or two people spend one bathing time in the bathtub 4 in a typical domestic bathtub system.

Next, the operation of the circulation pump unit 1 configured as described above will be described. When the bath is operated by the remote control means 24 to perform a circulation operation, the controller 23 opens the flow path opening / closing valve 11 in the first and second outflow pipes 6a and 6b, and then turns on the pump 2. . At this time, since the controller 23 switches the flow passage switching valve 15 and the filtration switching valve 18 to form the filtration flow passage 12, the circulation operation (jet operation) and the filtration operation are performed. In the jet operation, the bath water returned through the return pipe 7 passes through the pump 2, and the bath water enters the bath 4 and the forward pipe 6, the first and second forward pipes 6a and 6b, and the flow passage opening / closing. It is jetted as a jet jet from the circulation fitting 8 through the valve 11. At this time, when the air solenoid valve 22 is opened, air is mixed into the jet jet of the bath water in the circulation fitting 8 through the air supply pipe 10, and the bubble bath operation can be performed.

On the other hand, the bath water is filtered from the flow passage 12, that is, the outflow pipe 6 to the filter 3 through the filter branch pipe 14, the flow path switching valve 15 and the filter introduction pipe 16, and is filtered downstream of the filter 3. From the side, through the filter outlet pipe 17, the filter switching valve 18, and the filter reflux pipe 19 to join the return pipe 7, pass through the pump 2, and pass through the outgoing pipe 6, the first and second outgoing pipes 6a, 6b. And is jetted as a jet jet from the circulation fitting 8 (see FIG. 2).

Here, when backwashing the filter 3 during the operation time, the bather operates the remote control means 24 to stop the circulation operation as shown in FIG. Operate to start. Then, the controller 23 first turns off the pump 2 and operates the filtration switching valve 18 and then the flow path switching valve 15 to start the flow path switching operation. Then, the passage opening / closing valve 11 is closed after the time required for the switching operation of the filtration switching valve 18 and the passage switching valve 15 has elapsed, and the passage blocking operation time by the passage opening / closing valve 11 has elapsed, and the passage switching operation has been completed. Is completed and the backwash channel 13 is formed. Thereby, the forward pipe 6, the first and second forward pipes 6
The bath water supplied from the circulation fitting 8 to the bath 4 via the a and 6b and the flow path opening / closing valve 11 is stopped. When the backwash channel 13 is formed, the controller 23 turns on the pump 2. Then, the bath water flows from the outflow pipe 6 to the filter branch pipe 14,
It reaches the downstream side of the filter 3 through the backwash supply pipe 20 and the filtration switching valve 18, passes through the filtration device 3, and is discharged through the filtration outlet pipe 17, the flow passage switching valve 15, and the drain pipe 21 ( (See FIG. 4). As a result, the filter material in the filter 3 is backwashed, so that the filter 3 can recover its filtering ability. During the backwash operation, the flow path opening / closing valve 11 is kept closed, so that the bath water returned from the bath 4 via the return pipe 7 is not returned to the bath 4. . In this way, during the backwash operation, the flow path to the circulation fitting 8 of the bathtub 4 is still cut off, so there is no risk of air being mixed into the bathwater. Therefore, since the bath water introduced downstream of the filter 3 is not mixed with air, the backwash does not cause the outflow of the filter material.

As described above, in the circulation pump unit 1 of this embodiment, when the circulation operation, the filtration operation, and the backwash operation are executed, turning on / off of one built-in pump 2 and the filtration switching valve 18 and Flow path switching valve 15
By the flow passage switching operation and the flow passage shutoff operation by the flow passage opening / closing valve 11 to execute the backwash operation using the bath water, the purpose can be sufficiently achieved.
The structure for backwashing, that is, the water tank and the dedicated pump are not required, and the apparatus is compact and the cost can be suppressed. In addition, since the backwashing of the filter 3 can be easily performed in this manner, the capacity of the filter 3 can be maintained if it is frequently performed during the normal circulation operation.

[0014]

Since the present invention is as described above, it is possible to achieve the original purpose by setting the operating procedure without providing a special device, thus avoiding complication of the device and cost increase. It can be done and maintenance is simple.

[0015]

[Brief description of drawings]

FIG. 1 is a schematic overall system diagram of a bath system for executing an operation control method of a circulation pump unit with a built-in filter having a backwash passage according to the present invention.

FIG. 2 is a schematic system diagram provided for explaining a circulation operation and a filtration operation in the circulation pump unit shown in FIG.

FIG. 3 is a timing chart for explaining an operating state of the circulation pump unit shown in FIG.

FIG. 4 is a schematic system diagram used for explaining a backwash operation when the circulation pump unit shown in FIG. 1 is forcibly stopped in operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 circulation pump unit 2 pump 3 filter 4 bathtub 5 water level switch 6 outflow pipe 6a first outflow pipe 6b second outflow pipe 7 return pipe 8 circulation fitting 9 nozzle part 10 air supply pipe 11 flow passage opening / closing valve 12 filtration flow passage 13 Backwash flow passage 14 Filtration branch pipe 15 Flow passage switching valve 16 Filtration introduction pipe 17 Filtration outlet pipe 18 Filtration switching valve 19 Filtration reflux pipe 20 Backwash supply pipe 21 Drain pipe 22 Air solenoid valve 23 Controller 24 Remote control means

Claims (1)

[Claims] 1. A circulation operation in which bath water is supplied as a jet jet to the bath under the operation of a circulation pump and is circulated, and a filtration operation in which bath water is introduced into a filter through a filtration channel to perform filtration, and In a circulation pump unit having a function of performing backwashing operation by performing backwashing of the filter by switching and forming the backwashing flow path so that bath water is introduced into the filter from the opposite side, forced during the circulation operation. Operation is stopped and the circulation pump is stopped, the flow passage is switched from the filtration flow passage to the backwash flow passage, and then the supply flow passage to the bath is cut off to complete the flow passage switching and then the circulation pump is turned on. A method for controlling the operation of a circulation pump unit with a built-in filter having a backwash flow path, which is operated to perform a backwash operation.