JP2017148743A - Filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain cost of an additive for enhancing the chlorine concentration in cleaning operation of a filter by high concentration chlorine water.SOLUTION: When operating a circulation pump 120, on the inside of a filter 100, a circulation passage of bathtub water is formed between an inlet water end 101 and an outlet water end 102 connected to a bathtub. A chemical injection end 105 is connected to a chemical injection unit for supplying a chemical for enhancing the chlorine concentration. An injection of the chemical from the chemical injection end 105 is started after detecting the establishment of a predetermined condition of indicating that the bathtub water is reduced in cleaning operation of the filter 100 for operating the circulation pump 120.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a filter, and more particularly to a cleaning operation of the filter.

  In water purification devices (filters) that circulate and filter bath water, it is required to regularly perform cleaning operations with high-concentration chlorine water to which chlorine compounds have been added in order to prevent the propagation of germs such as L. .

  Japanese Patent No. 3791158 (Patent Document 1) describes that the filtering means is back-washed with residual chlorine generated by the chlorine compound supply means as a cleaning operation of the water purification device. Similarly, Japanese Patent Application Laid-Open No. 2004-243166 (Patent Document 2) periodically performs backwashing and washing after backwashing for cleaning operation for sterilizing various bacteria in the bath with hypochlorous acid. It is described to do.

Japanese Patent No. 3791158 JP 2004-243166 A

  Patent Documents 1 and 2 describe that a washing operation of a filter including a backwashing operation is performed using bath water with an increased chlorine concentration. At this time, it is required by law or the like to clean the inside of the filter including the filter medium using cleaning water having a predetermined chlorine concentration (for example, about 5 to 10 (%)). Below, the washing | cleaning driving | operation of the filter 100 using the bathtub water controlled by the predetermined | prescribed chlorine concentration is also called "chlorine cleaning driving | operation."

  However, in order to increase the chlorine concentration to a predetermined concentration, an additive such as a chemical solution is required. Therefore, there is a concern that the cost may deteriorate when the consumption of the additive increases.

  The present invention has been made to solve such problems, and the object of the present invention is to reduce the cost of additives for increasing the chlorine concentration in the washing operation of a filter with high-concentration chlorine water. It is to be.

  In one aspect of the present invention, a filter connected to a bathtub includes a circulation pump, a filter unit incorporating a filter medium, a mixing unit, and a control device for controlling a cleaning operation of the filter. The circulation pump introduces bathtub water from the bathtub to the inside of the filter. A mixing part mixes the additive for raising a chlorine concentration with respect to the bath water introduced by the circulation pump. When the control device is instructed to start the cleaning operation, the control device detects that the amount of water in the bathtub has decreased until the first predetermined condition is satisfied, and then adds the additive to the bath water introduced by the operation of the circulation pump. Is mixed to control the bath water to a predetermined chlorine concentration, and a washing operation is performed in which the bath water having a predetermined chlorine concentration flows through the circulation path including the filtration unit.

  According to the said filter, after the amount of bathtub water reduces, the inside of the filter containing a filtration part can be wash | cleaned by circulating the bathtub water controlled by predetermined | prescribed chlorine concentration by mixing of an additive. . As a result, the cost of the additive for increasing the chlorine concentration in the washing operation of the filter with high-concentration chlorine water can be suppressed.

  Preferably, the filter further includes a flow path switching unit for switching the path of the bath water introduced by the circulation pump. The flow path switching unit includes a first path in which the introduced bath water returns to the bath after passing through the filtration unit along the first direction, and the introduced bath water is in a direction opposite to the first direction. The second path is discharged without being returned to the bathtub after passing through the filtration section along the line, and the introduced bath water is discharged without returning to the bathtub after passing through the filtration section along the first direction. The third path is configured to be switched. Then, when the control device is instructed to start the cleaning operation, the circulation pump is operated in a state where the second or third path is formed by the flow path switching unit until the first predetermined condition is detected. Is activated.

  Alternatively, preferably, in the configuration in which the flow rate switching unit is arranged, the control device includes a first period in which bath water having a predetermined chlorine concentration is allowed to flow in a state where the first path is formed in the cleaning operation, A circulation path is formed by providing a second period in which bath water having a predetermined chlorine concentration is passed in a state where the two paths are formed.

  If it does in this way, in the filter constituted so that change of the 1st course (filtration mode), the 2nd course (backwash mode), and the 3rd course (washing mode) is possible by a channel change part, it is chlorine. The operation of reducing the bath water before the concentration control and the cleaning operation by circulating the bath water having a predetermined chlorine concentration can be appropriately executed.

  Further preferably, when the control device detects that the amount of water in the bathtub has increased until the second predetermined condition is satisfied after the bathtub water having a predetermined chlorine concentration is discharged from the bathtub after the end of the cleaning operation, the circulation is performed. Operate the circulation pump to allow bath water to flow through the path.

  If it does in this way, a filter can be drive | operated so that high concentration chlorine residual water may be removed from a circulation path after the drainage from the bathtub after the washing operation by the bath water of predetermined | prescribed chlorine concentration.

  Preferably, the bathtub is provided with an electromagnetic opening / closing valve for discharging bathtub water, and the control device is configured to be able to generate a control request for the electromagnetic opening / closing valve. When instructed to start the cleaning operation, the control device requests opening of the electromagnetic on-off valve until the first predetermined condition is detected. At this time, the control device detects the establishment of the first predetermined condition when the integrated value of the passage flow rate of the electromagnetic on-off valve reaches a predetermined value based on the detection signal of the flow sensor.

  If it does in this way, in the filter applied to the bathtub provided with the electromagnetic opening-and-closing valve for automatic drainage, operation which reduces bathtub water before chlorine concentration control can be realized, without operating a filter. And the reduction | decrease operation | movement of the said bath water can be complete | finished according to the amount of drainage from the electromagnetic on-off valve detected by the flow sensor.

  Preferably, the control device requests the opening of the electromagnetic on-off valve for discharging the bath water after completion of the cleaning operation, and after the bath water having a predetermined chlorine concentration is discharged from the bath, When it is detected that the amount of water in the bathtub has increased until the second predetermined condition is satisfied under the condition that the closing is requested, the circulation pump is operated so that the bathtub water flows through the circulation path.

  In this way, the filter for removing drainage from the bathtub after washing operation with bath water having a predetermined chlorine concentration and high-concentration chlorine residual water using the bath water stored after draining from the circulation path. Operation can be performed automatically.

  Preferably, the bathtub is provided with a water level sensor for detecting the bathtub water level, and the control device is configured to be able to acquire a detection signal of the water level sensor. And a control apparatus detects establishment of the 1st predetermined condition, when the water level of bathtub water falls below a predetermined level based on the detection signal of a water level sensor.

  If it does in this way, since the operation of reducing the bath water can be appropriately terminated based on the detection of the bath water level, the amount of bath water to be mixed with the additive can be easily made constant.

  According to this invention, the cost of the additive for increasing the chlorine concentration in the washing operation of the filter with high-concentration chlorine water can be suppressed.

It is the schematic explaining the structure of the bathhouse system to which the filter according to embodiment of this invention is applied. It is a conceptual diagram explaining the water level of the bathtub shown by FIG. It is a block diagram explaining the structure of the filter shown by FIG. It is a flowchart explaining the control processing of the chlorine washing | cleaning driving | operation in the filter in embodiment of this invention. It is a flowchart explaining the control processing of the post-processing driving | operation after chlorine washing | cleaning in the filter in embodiment of this invention. It is a figure which shows the example of a setting of the timer driving | operation in the filter in embodiment of this invention. It is the schematic explaining the modification of the bathhouse system to which the filter according to embodiment of this invention is applied. It is a flowchart explaining the control processing of the washing | cleaning driving | operation with the filter applied to the bathhouse system shown by FIG. It is a flowchart explaining the control processing of the post-processing driving | operation after the washing | cleaning driving | operation with the filter applied to the bathhouse system shown by FIG. It is a figure which shows the example of a setting of the timer driving | operation in the filter applied to the bathhouse system shown by FIG.

  Embodiments of the present invention will be described below in detail with reference to the drawings. In the following description, the same parts and corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated in principle.

(Configuration of filter and bath system)
FIG. 1 is a schematic diagram illustrating a configuration of a bathhouse system to which a filter according to an embodiment of the present invention is applied.

  Referring to FIG. 1, a bathhouse system 5 includes a bathtub replenishing water device 10, a bathtub 50, a filter 100 for filtering bathtub water, a chemical liquid injection unit 300, and a heat source facility 400. In the bathhouse system 5, the bathtub 50 can be used for either a normal bath or a water bath. In the case of normal bath use, the heat source facility 400 is constituted by a heat source (for example, a water heater or a steam generator) for raising the temperature of the bath water. On the other hand, in the case of a water bath application, the heat source facility 400 is configured by a cold heat source (for example, a chiller) for lowering the temperature of the bath water.

  The bathtub replenishing water device 10 receives the low temperature water from the inlet pipe 11 and the high temperature water from the inlet pipe 12 and supplies the bathtub water from the outlet pipe 14 to the bathtub 50. By adjusting the mixing ratio (0 to 100 (%)) of the low temperature water and the high temperature water, the output temperature to the bathtub 50 can be controlled. For example, the mixing ratio can be controlled by controlling the opening degree of the mixing valve (not shown) connected to the water inlet pipes 11 and 12 with a microcomputer (not shown) of the bathtub replenishing water device 10.

  Furthermore, the bathtub makeup water device 10 has a function of controlling the water level of the bathtub water. Specifically, water level control can be realized by controlling the supply of bath water by the microcomputer according to a detection signal from a water level sensor 55 provided in the bathtub 50.

  In addition, by providing the flow rate sensor 16 in the drain pipe 14, it is possible to detect the amount of water supplied to the bathtub 50 by integrating the detected flow rate by the flow rate sensor. The detection value of the flow sensor 16 is input to the microcomputer of the bathtub makeup water device 10.

  The bathtub 50 is further provided with water outlets 51 a and 51 b and a water inlet 52 in order to form a filtration circulation path with the filter 100. The water outlets 51 a and 51 b of the bathtub 50 are connected to the water inlet end 101 of the filter 100. Similarly, the water inlet 52 of the bathtub 50 is connected to the water outlet end 102 of the filter 100. In addition, the water outlets 51a and 51b of the bathtub 50 are also connected with the drainage path via the on-off valve 56 that can be opened and closed by a user operation. The on-off valve 56 is closed during normal times (except when draining). When the filter 100 is in operation, the on-off valve 56 is maintained in a closed state, so that a bath water circulation path can be formed between the bathtub 50 and the filter 100.

FIG. 2 is a conceptual diagram illustrating the water level of the bathtub 50.
With reference to FIG. 2, the water level L <b> 0 is a water level corresponding to the full water state of the bathtub 50. The water level L1 is a hot water supply stop water level from the bathtub makeup water device 10, and the hot water supply from the bathtub makeup water device 10 is stopped when the bathtub water level reaches L1. The water level L2 is a water level at which hot water supply from the bathtub makeup water supply device 10 is resumed when the bathtub water decreases after the bathtub water level once reaches L1. That is, the water level control by the bathtub makeup water device 10 is executed such that the bathtub water level is between L1 and L2. The upper limit value of the automatic water level control may be set to be equal to the full water level L0 temporarily or constantly (that is, L1 = L0). If it does in this way, it will be in the state where hot water overflows from bathtub 50, and it can discharge surface dirt etc.

  The water levels L3 and L4 are defined in association with the filter 100. The water level L3 is a water level that is a condition for starting operation of the filter 100. That is, in order to start the filter 100 in a stopped state, it is a condition that the bathtub water level is higher than L3. L4 corresponds to the lower limit water level at which the filter 100 can be operated. Therefore, when the water level falls below L4 during the operation of the filter 100, the filter 100 is automatically stopped. In the configuration in which the filter 100 is provided, the water levels L3 and L4 are set to satisfy L2> L3> L4.

  The water level sensor 55 is configured to be able to detect the level relationship between the water levels L1 to L4 and the bath water level. For example, the water level sensor 55 can be configured by a pressure sensor for detecting a water pressure corresponding to the water level.

  Referring again to FIG. 1, the filter 100 includes an input end 103 and an output end 104 connected to the heat source equipment 400 in addition to the water inlet end 101 and the water outlet end 102 connected to the bathtub 50, and a chemical liquid injection unit 300. And a chemical solution input end 105 and a drainage end 107 connected to each other.

  When the filter 100 is provided with a temperature adjustment function, a heat transfer medium is input to the input end 103 from the heat source facility 400 (hot or cold source). The heat transfer medium is returned from the output end 104 to the heat source facility 400 after flowing inside the filter 100. Thereby, the circulation path of a heat transfer medium can be formed between the filter 100 and the heat source equipment 400.

  The chemical liquid injection unit 300 includes a pump 305 for supplying an additive used for a chlorine cleaning operation of the filter 100. For example, the additive is a chemical solution having a high chlorine concentration. The chemical liquid supplied from the pump 305 is input to the filter 100 from the chemical liquid input end 105.

FIG. 3 is a block diagram illustrating the configuration of the filter 100.
Referring to FIG. 3, the filter 100 includes a filtration tank 110, a circulation pump 120, a hair catcher 130, a flow path switching valve 140, pipes 141 to 145, a heat exchanger 150, and a temperature adjustment valve 160. And have.

  The filtration tank 110 contains a filter medium 112. The pipe 142 connects the upper region of the filter medium 112 in the filtration tank 110 and the flow path switching valve 140. Similarly, the pipe 143 connects the lower region of the filter medium 112 in the filtration tank 110 and the flow path switching valve 140. A temperature sensor 166 is disposed in the pipe 143. The filtration tank 110 corresponds to an example of a “filtration unit”.

  The pipe 141 is connected in series with the circulation pump 120 and the hair catcher 130 between the water inlet end 101 and the flow path switching valve 140. The pipe 145 connects between the flow path switching valve 140 and the drain end 107.

  The pipe 144 is arranged so that one end is connected to the flow path switching valve 140 and the other end is connected to the water discharge end 102. When the filter 100 is provided with a temperature adjustment function, the piping 144 is disposed so as to pass through the heat exchanger 150. In this case, a temperature sensor 165 is disposed on the downstream side (water discharge end 102 side) of the heat exchanger 150. The detected temperature of the bath water is input to the controller 190 by the temperature sensors 165 and 166.

  Further, the heat exchanger 150 is connected to the input end 103 and the output end 104 via the temperature adjustment valve 160. The temperature adjustment valve 160 is configured by an electromagnetic three-way valve controlled by the controller 190, and switches the path of the heat transfer medium from the heat source facility 400. Specifically, the path of the heat transfer medium flows from the input end 103 through the heat exchanger 150 to the output end 104, and from the input end 103 to the output end 104 by bypassing the heat exchanger 150. Switching to and from the path 162 is performed.

  When the path 161 is selected by the temperature adjustment valve 160, heat exchange is performed between the bathtub water passing through the pipe 144 and the heat transfer medium from the heat source facility 400. On the other hand, when the path 162 is selected by the temperature adjustment valve 160, the heat exchange between the bath water and the heat transfer medium is not executed. Thus, the function of switching execution and non-execution of heat exchange between the bath water and the heat transfer medium is realized by the control of the temperature adjustment valve 160 by the controller 190.

  Circulation pump 120 is controlled by controller 190, and sucks bath water from water inlet end 101 during operation. The hair catcher 130 is connected to the incoming end 101 of the bathtub water. The sucked bathtub water is introduced into the filter 100 via the hair catcher 130 and the pipe 141.

  The flow path switching valve 140 is formed by an electromagnetic five-way valve for selectively forming a flow path between the pipes 141 to 145. The flow path switching valve 140 is controlled by the controller 190. By the control of the flow path switching valve 140, the circulation path of the bath water in the filter 100 is switched. That is, the flow path switching valve 140 corresponds to an example of a “flow path switching unit”.

  The pipe 141 is further connected to the chemical liquid input end 105. During the chlorine cleaning operation, the chemical concentration (additive) from the chemical solution injection unit 300 is injected through the chemical solution input terminal 105, so that the chlorine concentration of the circulated bathtub water can be increased. That is, an example of the “mixing unit” can be configured by the chemical liquid input end 105 connected to the pipe 141.

  In addition, a chlorine concentration detector 170 for detecting the chlorine concentration of the bath water is connected to the pipe 143. The chlorine concentration detection unit 170 includes a filter 171, a water amount sensor 172, and a chlorine sensor 173. Detection signals from the water amount sensor 172 and the chlorine sensor 173 are input to the controller 190.

  The controller 190 is typically constituted by a microcomputer and controls the operation of the filter 100 in accordance with an operation command input to a remote controller 195 (hereinafter also referred to as “remote controller”). Specifically, the controller 190 generates and outputs control signals for the circulation pump 120, the flow path switching valve 140, and the temperature adjustment valve 160.

  The operation command includes an operation and stop command for the filter 100 and an operation mode selection command at the time of operation. These commands may be reserved and input in a so-called timer operation mode in which a time schedule is designated in advance. The filter 100 has a temperature adjustment function for bath water using the heat exchanger 150. In the filter 100 having a temperature adjustment function, the operation command includes the target temperature Tr of the bath water.

  In addition, the controller 190 receives the detected temperature input from the temperature sensors 165 and 166. Furthermore, the controller 190 can acquire the signal Slv indicating the water level in the bathtub 50 through communication with the bathtub makeup water supply device 10. Alternatively, the output signal of the water level sensor 55 (FIG. 1) can also be input to the controller 190. Thereby, according to a bathtub water level, the driving | operation of the filter 100 of a stop state can be disallowed, or the filter 100 in operation can be stopped. Moreover, the controller 190 can also acquire the detection value of the flow sensor 16 by communication with the bathtub makeup water apparatus 10.

  Furthermore, the controller 190 can detect the chlorine concentration in the bath water after passing through the filtration tank 110 by dividing the chlorine amount detected by the chlorine sensor 173 by the water amount detected by the water amount sensor 172. During the cleaning operation, the chlorine concentration of the bath water can be controlled by switching execution / stop of the mixing of the chemical from the chemical input terminal 105 to the bath water based on the detected chlorine concentration. Specifically, the control of the chlorine concentration can be realized by requesting the chemical solution injection unit 300 to inject and stop the chemical solution based on the detected chlorine concentration (that is, the operation and stop of the pump 305). .

(Operation of the filter)
Next, the operation of the filter 100 will be described.

  The operation mode of the filter 100 has a “filtration mode”, a “backwash mode”, and a “wash mode”.

  The filtration mode is usually performed continuously to filter and circulate bathtub water. In the filtration operation mode, the circulation pump 120 is operated, and the flow path switching valve 140 is controlled to form a flow path between the pipes 141 and 142 and between the pipes 143 and 144. Thereby, the bath water sucked from the water inlet end 101 is introduced into the upper part of the filter medium 112 in the filtration tank 110 via the hair catcher 130, the circulation pump 120, the pipe 141, and the pipe 142. That is, the bathtub water is filtered by passing through the filter medium 112 after removing foreign matters (such as dust and hair) by the hair catcher 130. Furthermore, the filtered bathtub water is output to the water outlet 102 via the pipe 143, the pipe 144, and the heat exchanger 150, and returned to the bathtub 50 (water inlet 52). Thereby, the circulation path of bathtub water is formed in the filter 100 and the bathtub 50. That is, the bathtub water path in the filtration mode corresponds to the “first path”.

  In the filtration mode, temperature adjustment control according to the target temperature Tr is further executed using the heat exchanger 150. Specifically, based on the temperature Tw detected by the temperature sensor 166, the bath water circulated by the filter 100 is switched by switching between execution and non-execution of heat exchange in the heat exchanger 150 by control of the temperature adjustment valve 160. Temperature can be controlled.

  That is, in the configuration in which a heat source is connected as the heat source facility 400, the temperature of the bathtub water can be increased by performing heat exchange when the temperature of the bathtub water is lower than the target temperature Tr. As a result, by setting the target temperature Tr to about 40 ° C., the temperature of the bath water can be maintained in a temperature range suitable for normal bath use.

  On the contrary, in the configuration in which a cold heat source is connected as the heat source facility 400, when the temperature of the bath water rises with respect to the target temperature Tr, the bath water can be lowered by performing heat exchange. As a result, by setting the target temperature Tr to about 15 to 20 ° C., the temperature of the bath water can be maintained in a temperature range suitable for water bath use.

  The backwash mode is executed to discharge dirt accumulated in the filtration tank 110. In the backwash operation mode, the circulation pump 120 is operated, and the flow path switching valve 140 is controlled to form a flow path between the pipes 141 and 143 and between the pipes 142 and 145. Thereby, the bath water sucked from the water inlet end 101 is introduced into the lower part of the filter medium 112 in the filtration tank 110 via the hair catcher 130, the circulation pump 120, the pipe 141, and the pipe 143. And the filter medium 112 is lifted by the flow of the reverse direction at the time of filtration operation, The dirt in the filter medium 112 is discharged | emitted by bathtub water. The bathtub water flowing in the reverse direction through the filter medium 112 is discharged from the drain end 107 without being returned to the bathtub 50 via the pipe 142 and the pipe 145. That is, the bath water path in the backwash mode corresponds to a “second path”.

  The cleaning mode is mainly executed to discharge dirty water generated in the backwash operation. In the cleaning mode, the circulation pump 120 is operated, and the flow path switching valve 140 is controlled to form a flow path between the pipes 141 and 142 and between the pipes 143 and 145. Thereby, the bathtub water sucked from the water inlet end 101 flows from the upper part to the lower part of the filter medium 112 in the filtration tank 110, and the bathtub water after passing through the filter medium 112 passes through the pipe 143 and the pipe 145, It is discharged from the drain end 107 without being returned to 50. For example, when the washing mode is executed after the back washing mode, the filter medium 112 that has been swollen by the back washing operation can be tightened. The bath water path in the cleaning mode corresponds to a “third path”.

(Filter chlorine cleaning operation)
By the continuous operation of the filter 100, dirt and impurities removed from the bath water are accumulated in the filter medium 112. Therefore, in order to prevent the propagation of germs in the filter medium, it is required to periodically perform a washing operation of the filter. As described in Patent Documents 1 and 2, this cleaning operation preferably includes cleaning of the filter medium 112 in the backwash mode. At this time, it is necessary to execute a chlorine cleaning operation using cleaning water having a predetermined chlorine concentration (for example, about 5 to 10 (%)) according to laws and regulations.

  During the chlorine washing operation of the filter 100, the chemical solution (additive) from the chemical solution injection unit 300 (FIG. 1) passes through the chemical solution input end 105 in order to increase the chlorine concentration of the bath water flowing through the filter 100. And injected into the circulating water. At this time, if the consumption of the chemical solution (additive) increases, the operating cost of the filter 100 deteriorates. Therefore, in the filter according to the present embodiment, a cleaning operation as described below is executed in order to suppress the consumption of additives in the cleaning operation.

  FIG. 4 is a flowchart for explaining the control process of the washing operation in the filter according to the embodiment of the present invention. The control process shown in FIG. 4 is executed by the controller 190. In other words, the controller 190 can constitute an embodiment of the “control device”.

  Referring to FIG. 4, controller 190 determines whether or not the start of the chlorine cleaning operation is instructed in step S100. The start of the chlorine cleaning operation may be instructed by operating an operation button (not shown) provided on the remote controller 195, or instructed by a timer operation in which a start timing (for example, day of the week and time) is preliminarily input to the remote controller 195. May be. Alternatively, the start of the chlorine cleaning operation may be automatically instructed every predetermined time, such as every day or every predetermined number of days.

  That is, step S100 can be determined as YES in response to the detection of the switch operation by the user or the arrival of the start time of the cleaning operation designated by the timer operation. When the start of the chlorine cleaning operation is instructed (YES in S100), the controller 190 executes a series of control processes for the chlorine cleaning operation. On the other hand, when the start instruction for the chlorine cleaning operation is not detected (NO in S100), the control processing after step S110 is not started.

  When the chlorine cleaning operation is started, the controller 190 performs a draining operation for reducing the bath water in step S110. The draining operation can be performed by operating the filter 100 in the backwash mode or the wash mode. As illustrated in FIG. 3, in the backwash mode and the wash mode, the bathtub water introduced from the bathtub 50 passes through the filter medium 112 in the forward direction (washing mode) or the reverse direction (backwash mode), and then the bathtub 50. It is discharged from the drainage end 107 without being returned to. For this reason, the amount of water in the bathtub 50 can be reduced.

  The controller 190 determines whether or not a predetermined condition relating to a decrease in bath water is satisfied in step S110 during execution of the draining operation in step S110. For example, in step S120, based on the output signal Slv of the water level sensor 55, it can be determined that the predetermined condition has been established when the water level of the bathtub 50 has dropped below L3. On the other hand, when the bathtub water level is higher than L3, it is determined that the predetermined condition is not satisfied.

  When the predetermined condition relating to the decrease in bathtub water is satisfied (when YES is determined in S120), controller 190 proceeds to step S130 and starts control for increasing the chlorine concentration to a predetermined value. During the chlorine concentration control, the controller 190 is configured so that the chlorine concentration in the bath water detected using the chlorine concentration detection unit 170 is within a predetermined range (for example, 5 to 10 (%)). The supply of the chemical solution (additive) and its stop are requested for FIG. In step S130, the chlorine concentration control is executed with the filter 100 operating in the filtration mode.

  Controller 190 determines whether the chlorine concentration of bathtub water rose to predetermined concentration by Step S140. When the chlorine concentration increases (when YES is determined in S140), the controller 190 performs a predetermined pattern cleaning operation in step S150.

  For example, in the washing operation, the inside of the filter 100 and the pipe connecting the filter 100 and the bathtub 50 are kept for a predetermined time (for example, about 2 hours) by a filtration mode in which bathtub water controlled to a predetermined concentration is circulated. ) And circulatingly wash with high-concentration chlorine water. Furthermore, after circulating cleaning in the filtration mode, backwashing of the filter medium 112 with high-concentration chlorine water is performed for a predetermined time in the backwash mode.

  The pattern of the cleaning operation is not limited to the combination of the filtration mode and the backwash mode as described above, and at least any one of the filtration mode, the backwash mode, and the wash mode using high-concentration chlorine water. It can be realized as appropriate by operating the filter 100.

  On the other hand, the controller 190 waits for the start of the cleaning operation (S150) until the chlorine concentration increases (NO in S140). That is, the operation time in the filtration mode in step S130 is not counted as the cleaning time in the filtration mode in step S150. As a result, in the cleaning operation of step S150, a predetermined cleaning time using bath water controlled to a predetermined chlorine concentration is secured.

  In step S160, the controller 190 determines whether or not the predetermined pattern of the cleaning operation (S150) has ended, and continues the cleaning operation (S150) until the predetermined pattern ends (NO in S160).

  Note that the controller 190 can continuously execute the chlorine concentration control even during the execution of step S150. That is, when a decrease in the chlorine concentration is detected during the cleaning operation (S150), the controller 190 can request the chemical solution injection unit 300 (FIG. 1) to supply the chemical solution (additive). Thereby, washing | cleaning operation | movement can be performed using the bathtub water controlled by the predetermined | prescribed chlorine concentration.

  When the predetermined pattern of the cleaning operation (S150) ends (when YES is determined in S160), the controller 190 notifies the user of the end of cleaning with high-concentration chlorine water in step S170. For example, the remote controller 195 outputs a message (screen display or sound) for notifying the user of the end in a manner that can be sensed visually or auditorily. Since high-concentration chlorine water needs to be discharged after the cleaning with the high-concentration chlorine water is completed, in step S170, a message further prompting the user to drain water from the bathtub 50 (that is, opening operation of the on-off valve 56) is further output. It is preferred that

  Thereby, according to the filter according to the present embodiment, the cleaning operation is performed by mixing the chemical (additive) for increasing the chlorine concentration after reducing the amount of water in the bath water. For this reason, since the consumption of the additive (chemical | medical solution) used for the washing | cleaning operation | movement of the filter by high concentration chlorine water can be suppressed, the operating cost of the filter 100 can be improved.

  Furthermore, by terminating the drainage operation based on the bathtub water level (detection signal from the water level sensor 55), it becomes easy to make the amount of bathtub water to be mixed with the additive (chemical solution) constant. Moreover, the fall of a bathtub water level can also anticipate the effect which prevents that a user accidentally enters the bathtub 50 for bathing during execution of a chlorine washing operation.

  FIG. 5 is a flowchart for explaining the control process of the post-processing operation after chlorine cleaning in the filter according to the embodiment of the present invention. The post-treatment operation shown in FIG. 5 is executed in order to remove high-concentration chlorine residual water from the bath water circulation path during the chlorine cleaning operation.

  Referring to FIG. 5, controller 190 determines whether or not the chlorine cleaning operation is terminated in step S200. For example, when step S170 (FIG. 4) is executed, step S200 is determined as YES.

  When the end of the chlorine cleaning operation is detected (when YES is determined in S200), controller 190 determines whether or not a predetermined condition relating to drainage from bathtub 50 is satisfied after the chlorine cleaning operation is completed in step S210. . For example, in step S210, based on the output signal Slv of the water level sensor 55, the predetermined condition is satisfied when the water level of the bathtub 50 is lower than L4 and the elapsed time exceeds a predetermined time required for drainage. Can be determined.

  When a predetermined condition relating to drainage from the bathtub 50 is established (YES in S210), the controller 190 proceeds to step S220 and sends a message requesting water supply to the bathtub 50 by the bathtub makeup water supply device 10 to the remote controller. 195 or the like. At this time, it is preferable to output a message that prompts the user to close the on-off valve 56.

  After the message is output in step S220, the controller 190 proceeds to step S230 to determine whether or not a predetermined condition regarding the increase in bath water is satisfied. For example, in step S230, based on the output signal Slv of the water level sensor 55, it can be determined that the predetermined condition is satisfied when the water level of the bathtub 50 rises to L3 at which the filter 100 can be operated. Alternatively, based on the integrated value of the flow rate detected by the flow rate sensor 16 (FIG. 1), the amount of water supplied from the bathtub replenishing water device 10 to the bathtub 50 after the end of the chlorine cleaning operation is the bottom area of the bathtub 50 and the water level L3. It may be determined that a predetermined condition is satisfied in response to exceeding a determination value corresponding to the product of

  Controller 190 will advance processing to Step S240, and will operate filter 100 in filtration mode, when the predetermined condition about the increase in bathtub water is satisfied (at the time of YES judgment of S230).

  In step S250, the controller 190 compares the elapsed time from the start of operation in the filtration mode with a predetermined time T1 (for example, about 5 to 10 minutes). Until the elapsed time reaches T1 (during NO determination in S250), the operation in the filtration mode is continued, and the bathtub water newly supplied from the bathtub replenishing water device 10 is inside the filter 100, and It circulates in the piping connecting the filter 100 and the bathtub 50. Thereby, the high concentration chlorine residual water by chlorine washing operation can be removed in the circulation path of bathtub water.

  When the filtering mode in step S240 is secured for a predetermined time T1 (when YES is determined in S250), the controller 190 notifies the user that the post-processing operation of the chlorine cleaning operation has ended normally in step S260. For example, as in step S170, a message (screen display or sound) for notifying the user of the information is output from the remote controller 195. Furthermore, since the concentration of chlorine in the bathtub water used for the post-treatment operation is higher than usual due to the high-concentration chlorine residual water, a message that prompts the user to drain the bathtub 50 is further output in step S260. It is preferable.

  Furthermore, the controller 190 compares the elapsed time after the end of the chlorine cleaning operation is detected in step S215 (at the time of YES determination in S200) with the predetermined time T2. And even if it waits for the predetermined time T2, when the predetermined condition of step S210 is not satisfied and drainage from the bathtub 50 is not performed, the process proceeds to step S270, and the post-processing operation does not end normally. An abnormal message for notifying the user of the fact is output, and the control process is terminated.

  Similarly, in step S235, the controller 190 compares the elapsed time after the predetermined condition relating to drainage from the bathtub 50 after the completion of the chlorine cleaning operation (when YES is determined in S210) with the predetermined time T3. And even if it waits for predetermined time T3, when the predetermined condition of step S230 is not satisfied and the filter 100 cannot be operated, the process proceeds to step S270, and the post-processing operation does not end normally. An abnormal message for notifying the user of the fact is output, and the control process is terminated.

  If it does in this way, corrosion of piping etc. can be prevented by performing post-processing operation which excludes high concentration chlorine residual water after completion of chlorine washing operation by high concentration chlorine water. In particular, the post-processing operation can be appropriately executed by a combination of user guidance and automatic operation of the filter 100.

  FIG. 6 shows a setting example of timer operation that can be input by remote controller 195 in the filter according to the embodiment of the present invention.

  Referring to FIG. 6, for example, the operation timing of filter 100 can be designated by inputting designation of day of the week and time using remote controller 195.

  In the example of FIG. 6, as a usage mode of the bathhouse system 5, a filtration operation is performed in which the filter 100 is operated in the filtration mode, with Wednesday being a holiday, and other days being a business hour of 5 to 23:00, Timer reservation is made.

  In addition, in part of business hours, timer reservation is executed so as to apply “eco-driving” in which the filter 100 is operated in the filtration mode intermittently with a pause for a certain period, instead of being completely continuous. You can also In the example of FIG. 6, the timer reservation is made so that the eco-driving is applied between 7 and 15:00 on Monday, Tuesday, and Thursday when there are few bathers.

  Further, on Sundays and Fridays, a timer is reserved for starting the backwash operation from 23:00. For example, in the backwash operation, the filter 100 operates so as to operate for a predetermined time (for example, about 10 minutes) in the cleaning mode after operating for a predetermined time (for example, about 10 to 15 minutes) in the backwash mode. Automatically driven by.

  In addition, after the business hours on the day before the holiday, in the example of FIG. 6, a timer is reserved for starting the above-described chlorine cleaning operation from 23:00 on Tuesday. Thereby, at 23 o'clock on Tuesday, step S100 in FIG. 4 is determined to be YES, whereby the chlorine cleaning operation of the filter 100 is automatically executed by the controller 190. Furthermore, after the cleaning operation is completed, the post-processing operation shown in FIG. 5 can be executed.

(Modified example of bathhouse system configuration)
FIG. 7 is a block diagram illustrating a modification of the bathhouse system to which the filter 100 according to the embodiment of the present invention is applied.

  Referring to FIG. 7, a bathhouse system 5 # according to the modification has an electromagnetic on-off valve connected in series with an on-off valve 56 in the drainage path from the bathtub 50 as compared with the bathhouse system 5 shown in FIG. 1. 57 differs in that it is further arranged. Further, a flow rate sensor 58 for detecting the amount of water passing through the electromagnetic opening / closing valve 57 is provided. The detection value of the flow sensor 58 is input to the bathtub makeup water device 10 and / or the filter 100 (controller 190). Therefore, the controller 190 can acquire the detection value of the flow sensor 58 directly from the flow sensor 58 or indirectly via a microcomputer (not shown) of the bathtub makeup water device 10.

  The electromagnetic on-off valve 57 can be controlled to open and close in response to a request from the controller 190. That is, the electromagnetic opening / closing valve 57 may be directly controlled to open / close by a control command from the controller 190, and is controlled to open / close by a control command from the bathtub makeup water device 10 (microcomputer) in response to a request from the controller 190. May be.

  In bathhouse system 5 #, on-off valve 56 is provided as a backup application when electromagnetic on-off valve 57 fails. That is, the on-off valve 56 is maintained in an open state when the electromagnetic on-off valve 57 is normal (non-failure). Accordingly, in the configuration of FIG. 7, drainage from the bathtub 50 can be automatically executed by the electromagnetic opening / closing valve 57.

  Therefore, in the filter 100 applied to the bathhouse system 5 # shown in FIG. 7, the washing operation and the post-processing operation can be further automated using the electromagnetic on-off valve 57.

  FIG. 8 is a flowchart for explaining the control process of the washing operation in the filter applied to the bathhouse system 5 #.

  8 is compared with FIG. 4, in the washing operation of the filter applied to the bathhouse system 5 #, step S270 is executed instead of step S170 after the processing of steps S100 to S160 similar to FIG.

  In the draining operation of step S110, the filter 100 can be drained from the bathtub 50 by opening the electromagnetic on-off valve 57 in addition to operating the filter 100 in the backwash mode or the cleaning mode. In this case, in step S110, the controller 190 generates a request for opening the electromagnetic opening / closing valve 57. That is, when applied to the bathhouse system 5 # of FIG. 7, it is also possible to execute a draining operation for reducing the amount of water in the bathtub 50 without operating the filter 100.

  Moreover, it is also possible to determine based on the detection value of the flow sensor 58 about the predetermined condition which concerns on the reduction | decrease in the bathtub water in step S120. For example, when an opening request for the electromagnetic on-off valve 57 is generated in step S110, the predetermined condition is satisfied when the integrated value of the flow rate detection values by the flow sensor 58 after the generation of the request exceeds the determination value. Can be determined.

  That is, when the predetermined pattern of the cleaning operation (S150) is completed (when YES is determined in S160), the controller 190 requests the electromagnetic on-off valve 57 to be opened from step S270. In response to this, the high-concentration chlorine water used for the cleaning operation is automatically drained from the bathtub 50 by opening the electromagnetic on-off valve 57.

  And the controller 190 performs the post-processing driving | operation after washing | cleaning driving | operation according to the flowchart of FIG.

  Comparing FIG. 9 with FIG. 5, when step S <b> 270 is executed, the controller 190 detects the end of the chlorine cleaning operation, and determines that step S <b> 200 is YES.

  Further, in step S210, the controller 190 determines that a predetermined condition (from the bathtub 50) is reached when the elapsed time from the opening of the electromagnetic switching valve 57 in step S270 exceeds a predetermined time corresponding to the time required for draining from the bathtub 50. It is possible to determine that the wastewater has been established. Alternatively, the predetermined condition in step S210 can be determined so that the completion of drainage can be detected more reliably by further combining the output signals of the water level sensor 55 and / or the flow rate sensor 58.

  Moreover, if the predetermined condition regarding the drainage from the bathtub 50 is satisfied (when YES is determined in S210), the controller 190 executes the processes of steps S280 and S290 instead of step S220 of FIG. In step S280, the controller 190 requests the electromagnetic on-off valve 57 to be closed. And the controller 190 requests | requires the water supply start to the bathtub 50 with respect to the bathtub replenishment water apparatus 10 by step S290 after the electromagnetic on-off valve 57 closes (S280). Thereby, the water level of the bathtub 50 rises by the water supply from the bathtub makeup water supply device 10.

  After generating the bath water supply request in step S290, the controller 190 determines whether or not a predetermined condition regarding the increase in bath water is satisfied in step S230 similar to FIG. And if the predetermined condition regarding the increase in bath water is satisfied (at the time of YES determination in S230), the controller 190 operates the filter 100 in the filtration mode by steps S240 and S250 similar to FIG. Remove residual high-concentration chlorine water.

  When the filtration mode is secured for a predetermined time T1 (when YES is determined in S250), the controller 190 generates a request for opening the electromagnetic on-off valve 57 in Step S300, and uses the bath water used for the post-processing operation to Drain automatically from 50.

  Furthermore, the controller 190 notifies the user that the post-processing operation of the chlorine cleaning operation has been completed normally in step S260. Thus, in the filter applied to bathhouse system 5 #, a series of chlorine cleaning operation and post-treatment operation is automatically executed at the normal end in step S260. Also in the control process of FIG. 9, it is possible to detect the abnormal end of the post-processing operation by steps S215 and S235.

  Therefore, in the filter applied to the bathhouse system 5 # shown in FIG. 7, the water supply / drainage of the bathtub 50 in the chlorine cleaning operation and the post-processing operation can be automatically executed through the open / close control of the electromagnetic open / close valve 57. . As a result, the chlorine cleaning operation that suppresses the consumption of the additive (chemical solution) by the filter according to the present embodiment can be automated including the post-processing operation, and the user convenience is improved.

  FIG. 10 shows a setting example of timer operation of filter 100 applied to bathhouse system 5 #.

  Compared to FIG. 6, FIG. 6 shows that the bath room system 5 # provided with the electromagnetic on-off valve 57 reserves a timer for the drain operation from the bathtub 50 in addition to the various timer operations described in FIG. Can do. In the example of FIG. 10, timer reservation is performed so that the drainage operation is executed at 23:10 after the end of business hours on Sunday and Friday.

  As a result, at 23:10 on Sunday or Friday, the controller 190 generates a request for opening the electromagnetic opening / closing valve 57, so that drainage from the bathtub 50 can be automatically executed.

  In addition, the structure of the filter shown in FIG. 3 is only an example, and in the filter that forms a circulation path of the bath water that flows through the filtration unit by the operation of the circulation pump, the additive (chemical solution) is added during the chlorine cleaning operation. If it is the structure of the aspect which mixes, this invention can be applied in common. In particular, in the illustration in FIGS. 1 and 3, the configuration in which the filter 100 includes an element for temperature adjustment control is illustrated, but the present embodiment is also applied to a filter that does not have a temperature adjustment control function. The point that the chlorine cleaning operation according to the above can be applied in a similar manner is described in a confirming manner.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  5 Bathhouse system, 10 Bath replenishment water device, 11, 12 Water intake pipe, 14 Water discharge pipe, 16 Flow rate sensor (tub water replenishment water device), 50 Bathtub, 51a, 51b Water outlet, 52 Water inlet, 55 Water level sensor, 56 On-off valve , 57 Electromagnetic on-off valve, 58 Flow rate sensor (drainage by electromagnetic on-off valve), 100 Filter, 101 Inlet end, 102 Outlet end, 103 Input end, 104 Output end, 105 Chemical liquid input end, 107 Drain end, 110 Filtration tank, 112 Filter medium, 120 Circulation pump, 130 Hair catcher, 140 Flow path switching valve, 141-145 piping, 150 Heat exchanger, 160 Temperature control valve, 161, 162 Path (heat transfer medium), 165, 166 Temperature sensor, 170 Chlorine Concentration detector, 171 filter, 172 Water sensor, 173 Chlorine sensor, 190 controller Over La, 195 remote controller, 300 liquid injection unit, 305 pumps, 400 heat source facilities, L0～L4 level, Slv output signal (level sensor), T1 to T3 for a predetermined time.

Claims (8)

A filter connected to the bathtub,
A circulation pump for introducing bathtub water from the bathtub to the inside of the filter;
A filtration part with a built-in filter medium;
A mixing section for mixing an additive for increasing the chlorine concentration with respect to the bath water introduced by the circulation pump;
A control device for controlling the washing operation of the filter,
When the control device is instructed to start the cleaning operation, the control device detects that the amount of water in the bathtub has decreased until the first predetermined condition is satisfied, and then adds the additive to the introduced bath water. A filter that controls the bath water to a predetermined chlorine concentration and performs a washing operation of flowing the bath water having the predetermined chlorine concentration through a circulation path including the filtration unit. A flow path switching unit for switching the path of the introduced bath water;
The flow path switching unit is
A first path in which the introduced bathtub water returns to the bathtub after passing through the filtration unit along the first direction, and the introduced bathtub water runs in a direction opposite to the first direction. A second path that is discharged without being returned to the bathtub after passing through the filtering part, and the introduced bathtub water is returned to the bathtub after passing through the filtering part along the first direction. Configured to switch and form a third path that is discharged without being discharged,
When the start of the cleaning operation is instructed, the control device is in a state in which the second or third path is formed by the flow path switching unit until the first predetermined condition is detected. The filter according to claim 1, wherein the circulating pump is operated. A flow path switching unit for switching the path of the introduced bath water;
The flow path switching unit is
A first path in which the introduced bathtub water returns to the bathtub after passing through the filtration unit along the first direction, and the introduced bathtub water runs in a direction opposite to the first direction. A second path that is discharged without being returned to the bathtub after passing through the filtering part, and the introduced bathtub water is returned to the bathtub after passing through the filtering part along the first direction. Configured to switch and form a third path that is discharged without being discharged,
In the cleaning operation, the control device has a first period in which the bath water having the predetermined chlorine concentration is allowed to flow while the first path is formed, and a state in which the second path is formed. The filter according to claim 1, wherein the circulation path is formed by providing a second period for allowing the bath water having the predetermined chlorine concentration to flow therethrough.   When the control device detects that the amount of water in the bathtub has increased until the second predetermined condition is satisfied after the bath water having the predetermined chlorine concentration is discharged from the bath after the end of the cleaning operation, The filter according to any one of claims 1 to 3, wherein the circulation pump is operated so that the bath water flows through the circulation path. The bathtub is provided with an electromagnetic on-off valve for discharging the bathtub water,
The control device is configured to be able to generate a control request for the electromagnetic on-off valve,
3. The filter according to claim 1, wherein when the start of the cleaning operation is instructed, the control device requests opening of the electromagnetic on-off valve until the establishment of the first predetermined condition is detected. The control device is configured to be able to acquire a detection signal of a flow rate sensor that detects a flow rate of the electromagnetic on-off valve,
The said control apparatus detects establishment of said 1st predetermined condition, when the integrated value of the passage flow rate of the said electromagnetic on-off valve reaches a predetermined value based on the detection signal of the said flow sensor. Filtration machine. The bathtub is provided with an electromagnetic on-off valve for discharging the bathtub water,
The control device is configured to be able to generate a control request for the electromagnetic on-off valve,
The control device requests opening of the electromagnetic on-off valve after completion of the cleaning operation, and after the bathtub water having the predetermined chlorine concentration is discharged from the bathtub, the control device is requested to close the electromagnetic on-off valve. 4. When detecting that the amount of water in the bathtub has increased until the second predetermined condition is satisfied, the circulation pump is operated so that the bathtub water flows through the circulation path. The filter according to claim 1. The bathtub is provided with a water level sensor for detecting the bathtub water level,
The control device is configured to be able to acquire a detection signal of the water level sensor,
The said control apparatus detects establishment of said 1st predetermined condition, when the water level of the said bath water falls below a predetermined level based on the detection signal of the said water level sensor. 2. The filter according to item 1.

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