JP2008136760A - Bathtub washing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bathtub washing apparatus which can determine that a stopper of other apparatus than the bathtub washing apparatus is opened resulting the use of supply hot water and the fact it is closed again by a bathtub washing apparatus without using other apparatus, even if a heat source machine controller and a washing controller are not linked together, and particularly which can be connected to a heat source machine made by the other maker. <P>SOLUTION: If detected hot water filling rate Qd is not maintained within the tolerance range of setting rate of flow Qt in the bathtub washing apparatus side (S11, NO), in the next step, when hot water filling rate Qd exceeds the upper limit of the tolerance range for not more than 20 seconds, and it falls below the lower limit of the tolerance range for more than 20 seconds, it is judged that the other stopper is open, and hot water supply is to be continued (S22, NO, S23, YES, proceeding to S24). Next, it is judged whether the other stopper is closed again depending on whether or not hot water filling rate Qd exceeds the lower limit of the tolerance range of setting rate of flow Qt, with the counting of washing time stopped temporarily (S26-30). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bathtub cleaning apparatus including a heat source device having a hot water supply function and a bathtub cleaning unit having a bathtub cleaning function using hot water supplied from the heat source device, and in particular, the controller of the heat source device and the bathtub cleaning. Even if communication with the controller of the unit is disabled or interrupted and both controllers are not linked to each other, bath cleaning can be continued while judging the status of the heat source unit without inputting information from the heat source unit Related to technology.

  2. Description of the Related Art Conventionally, it is configured to have a bathtub cleaning function in addition to a hot water supply function for filling a bathtub, and these various functions are controlled by a heat source controller (for example, Patent Documents). 1). Also, the heat source machine controlled by the heat source machine controller and the bathtub washing unit controlled by the washing controller are combined, and the heat source machine controller and the washing controller are connected to communicate with each other, so that the operation status of the heat source machine controller from the heat source machine controller is changed. There is also known one in which operation control is performed by a cleaning controller in response to such information input (see, for example, Patent Document 2).

JP-A-10-267400 Japanese Patent Laid-Open No. 11-299671

  By the way, it is necessary to receive hot water for pouring (hot water) from the heat source machine for bath washing (washing and rinsing) by the bath washing unit. (Hot water supply curan) or a shower head (shower curan) in the bathroom is connected so that hot water can be supplied. For this reason, in the middle of receiving pouring for washing, for example, the kitchen hot water tap may be opened and hot water supply to the kitchen hot water tap may be started. In this case, for example, information indicating that the use of hot water supply at the kitchen hot-water tap (other plugs) has been started from the heat source controller (other plugs open) is output to the cleaning controller. In order to give priority to hot water supply to the hot-water tap, processing for temporarily stopping the pouring of the cleaning water and interrupting the cleaning (for example, closing control of the pouring solenoid valve) is performed. And if the information output that the said other plug was closed-converted is received from a heat-source controller, the washing | cleaning controller will open and switch the said pouring solenoid valve, and it will be made to resume washing | cleaning. In short, whether or not the cleaning controller receives information on the hot water use status of the user at the hot water tap or shower head by communication from the heat source controller, and executes control for pausing (suspending) or restarting the cleaning process. This is the judgment.

  However, if the heat source device introduced by the user and the bathtub cleaning unit are both from the same manufacturer, the heat source device controller and the cleaning controller are usually configured to be linked. Processing such as interruption or resumption of cleaning processing based on the start of use of hot water at the stopper is possible, but the above-mentioned linkage is not provided if the heat source device and the cleaning unit are from different manufacturers. First, both controllers become unlinked with each other, which may cause problems when using hot water with other plugs. For example, when a user who installed a heat source machine installed a bathtub cleaning unit from a manufacturer different from that of the heat source machine afterwards, or a user who initially installed the same manufacturer's heat source machine and bathtub cleaning unit as a set, After that, when only the bathtub cleaning unit is replaced with another manufacturer, the above-mentioned unlinked state occurs, and there is a possibility that the supply flow rate may be insufficient when the hot water supply is used with another plug.

  The present invention has been made in view of such circumstances, and the object of the present invention is to provide a heat source even if the controller on the heat source machine side and the controller on the bathtub cleaning unit side are in an unlinked state. The hot water use from the machine is caused by a plug other than the bathtub cleaning unit, etc., and the hot water usage is accurately judged only on the bathtub cleaning unit side, and the operation control of interrupting or restarting the cleaning process is performed reliably. It is in providing the bathtub cleaning apparatus to obtain.

  In order to achieve the above object, the present invention provides a bathtub cleaning apparatus attached to a heat source device that receives and heats incoming water and then supplies hot water to the hot water tap, and receives the hot water as one of the hot water taps. A cleaning pipe for pouring as cleaning hot water, a pouring valve for switching the supply / cutoff of the pouring water through the washing pipe by opening and closing, and a pouring flow rate for detecting the pouring flow rate poured through the washing pipe The following specific matters are provided for a bathtub cleaning apparatus including a sensor and a cleaning controller that controls the operation of the operating element including the hot water switching valve for cleaning the bathtub. That is, the cleaning controller includes timer means for starting the cleaning time with the start of the cleaning process by pouring the cleaning water into the bathtub by opening the pouring switching valve, and the pouring flow rate by starting the cleaning process. The detected flow rate output from the sensor is monitored, and when this detected flow rate changes below the set flow rate, it is determined that another hot-water tap has been opened, and with this determination, the pouring valve is maintained open. Then, while continuing the pouring of the washing hot water through the washing pipe, the count of the washing time by the timer means is temporarily stopped, and whether or not the other hot water taps are closed again is independently determined based on the situation of the detected flow rate. And a single determination processing unit for determining (claim 1).

  The “start of counting cleaning time” mentioned above refers to either or both of starting the counting of cleaning integrated time and / or starting counting of the remaining cleaning time decremented from the set cleaning time. In addition, “changed below the set flow rate” means that the flow rate adjustment is not strict and includes control fluctuations, and in addition, there may be flow rate fluctuations due to fluctuations in water pressure due to disturbances, etc. even under constant operating conditions. The above is a reduction fluctuation exceeding a slight fluctuation amount that can occur in a normal operation control state. As a reduction fluctuation amount for determining that such other hot water tap has been opened, it is determined by a test value, or a reduction side fluctuation amount that is lower than the lower limit value of the tolerance range in the control of the set flow rate is set. do it.

  In the case of the present invention, when it is determined that the other hot-water tap has been opened, the count of the cleaning time is then temporarily stopped, but pouring through the cleaning pipe is continued. By detecting and monitoring the fluctuation state of the detected flow rate, it is possible to independently determine that the other hot-water tap is closed again. In other words, if the other hot water tap is closed again, the amount of hot water that has been supplied to it flows to the cleaning pipe side, and as a result, the pouring flow rate increases and returns to the original set flow rate. Because it will be. For this reason, even if it does not obtain information input such as the fluctuation state of the incoming water flow rate in the heat source machine from the heat source machine, it is possible to make a determination solely based on the flow rate fluctuation information on the bathtub cleaning device side. Thus, conventionally, the object for attaching the bathtub cleaning device was only to the heat source device of the same manufacturer as the bathtub cleaning device, but in the case of the bathtub cleaning device of the present invention, to the heat source device of another manufacturer Can be attached in combination, and even when attached to a heat source machine of another manufacturer, the bathtub can be washed sufficiently and reliably.

  As the single determination processing unit in the present invention, it is possible to adopt a configuration in which it is determined that another hot water tap has been opened when the state in which the detected flow rate is reduced and changed from the set flow rate continues for a predetermined determination time. 2). By doing in this way, it is possible to more reliably perform determination (open determination) that other hot water taps have been opened, eliminating erroneous determination based on temporary fluctuations due to disturbance, pulsation, etc. Become.

  Further, as the single determination processing unit in the present invention, when the detected flow rate is increased and returned to the set flow rate or more within a set time range after it is determined that the other hot water tap is opened, the other hot water tap is It can be configured that it is determined that it has been closed, and the cleaning time counting is restarted in accordance with this determination (claim 3). By doing so, it is possible to reliably determine that the other hot-water tap is closed again, and to continue the original cleaning. Even in this case, the single determination processing unit can be configured to determine that the other hot-water tap is closed when the state where the detected flow rate is increased and returned to the set flow rate or higher continues for a predetermined determination time. (Claim 4). By doing so, as in the case of the above open determination, the determination that the other hot water taps have been closed (closed determination) is eliminated by the occurrence of erroneous determination based on temporary fluctuations due to disturbance, pulsation, etc. This makes it possible to perform more reliably.

  Further, as a cleaning controller in the above bath cleaning apparatus, when it is determined that the other hot water tap is opened, the count of the cleaning time by the timer means is temporarily stopped and the pouring switching valve is closed and switched. A linkage determination processing unit that determines whether or not the other hot-water tap has been closed again by receiving information on the operating status of the heat source unit by linkage with the heat source unit, the linkage determination processing unit, and the above It is possible to further comprise switching means for switching which process is executed with the single determination processing section (claim 5). In this way, if the heat source machine to which the bathtub cleaning device is attached is of the same manufacturer as the bathtub cleaning device, the linkage determination processing unit functions by switching by the switching means, while other manufacturers In any case, the target heat source machine to be attached is the same manufacturer and other manufacturers, so that the single determination processing unit functions by switching by the switching means. The bathtub cleaning device of the present invention can be attached, and the cleaning function can be sufficiently and reliably exhibited.

  As described above, according to the bathtub cleaning device of any one of claims 1 to 5, the bathtub cleaning can be performed without obtaining information input such as fluctuation state of the incoming water flow rate in the heat source apparatus from the heat source apparatus side. It becomes possible to make a determination independently based only on the flow rate fluctuation information on the apparatus side. As a result, the object of attaching the bathtub cleaning device to the heat source device of the same manufacturer as that of the bathtub cleaning device has been conventionally, but it can be attached to the heat source device of another manufacturer in combination. Therefore, even if it is attached to a heat source machine of another manufacturer, the bathtub can be washed sufficiently and reliably.

  In particular, according to the second aspect of the present invention, it is possible to eliminate the occurrence of misjudgment based on temporary fluctuations due to disturbances, pulsations, etc., by making the condition that the fluctuation has been reduced below the set flow rate continued for a predetermined judgment time. Thus, the open determination can be performed more reliably.

  According to the third aspect, it is possible to reliably determine that the other hot-water tap has been closed again and to continue the original cleaning. According to the fourth aspect of the present invention, by making the state of increasing and returning to the set flow rate or higher to continue for a predetermined determination time as a condition for the determination of closing, due to disturbance, pulsation, etc., as in the case of the opening determination described above. Occurrence of erroneous determination based on temporary fluctuations can be eliminated, and the close determination can be performed more reliably.

  Further, according to the fifth aspect, whether the heat source device to which the bathtub cleaning device is attached is of the same manufacturer as the bathtub cleaning device, whether the processing function by the single determination processing unit or the processing function by the linkage determination processing unit by the switching means. Since it can be switched according to whether it is a manufacturer's, the bathtub cleaning device of the present invention can be attached in any case if the heat source machine to be attached is the same manufacturer or another manufacturer Thus, the cleaning function can be sufficiently and reliably exhibited.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a bath apparatus in which a bathtub cleaning apparatus according to an embodiment of the present invention is attached to a heat source machine. In the same figure, the code | symbol 2 is a heat source machine provided with the hot-water supply function, the hot water filling function, and the reheating function, and the code | symbol 3 is a bathtub washing | cleaning unit as a bathtub washing | cleaning apparatus.

  The heat source unit 2 receives tap water or the like from a water inlet 21 and causes hot water heated to a predetermined temperature by heat exchange heating with combustion heat of a combustion burner (not shown) to the hot water outlet 22, and this hot water is supplied to a hot water supply pipe. 4 is used to supply hot water to the hot-water taps 41 (only one is shown in FIG. 1) in various places such as a kitchen, a wash basin, and a shower head. Further, the heat source device 2 includes a recirculation circuit composed of a retreat path 23 and a return path 24 for realizing a reheating function, and a recirculation pipe 61 and a return pipe that are piped between the circulation fitting 51 of the bathtub 5. It is connected to 62, and the bath hot water filled in the bathtub can be reheated and heated. That is, the bathtub hot water returned to the heat source unit 2 through the return pipe 62 and the return path 24 is reheated by heat exchange heating by the combustion heat of a combustion burner (not shown) in the heat source unit 2, and the bathtub hot water after the reheating travels. It is circulated so that it is supplied to the bathtub 5 through the path 23 and the forward piping 61, and is retreated to a predetermined boiling temperature. Further, the heat source device 2 includes a pouring passage 25 that branches off from the middle of the hot water supply passage 22 and is connected to the outgoing route 23 of the recirculation circuit. The hot water can be filled in the bathtub 5 through the outgoing path 23 and the outgoing pipe 61 by dropping into the outgoing path 23 and pouring. Each of the above hot water supply, reheating and hot water filling operations is realized by operation control by the heat source controller 28 based on setting information such as a set hot water temperature and hot water temperature input and set by the kitchen remote control 26 and bathroom remote control 27. It is like that.

  The heat source controller 28 (see FIG. 2) includes a hot water supply control unit 281, a hot water filling control unit 282 and a reheating control unit 283 as main control units. Here, hot water supply control by the hot water supply control unit 281 and hot water control by the hot water control unit 282 will be briefly described. When one of the hot water taps 41 is opened by the user, water enters from the water inlet 21, and the incoming water flow rate exceeds a predetermined minimum operating flow rate (MOQ) by a flow rate sensor in the heat source unit 2 (not shown). When hot water is detected, hot water supply control is started by the hot water supply control unit 281, whereby hot water heated to the set hot water temperature set in the kitchen remote controller 26 and the like is started and the hot water heated to the hot water outlet 22 is heated. The hot water is discharged and the hot water tap 41 is supplied with hot water. When the hot water switch or the automatic bath switch of the kitchen remote controller 26 or the bathroom remote controller 27 in the bathroom 5 is turned ON by the user, a hot water request command is output as the operation command, and the hot water control is performed by the hot water controller 282. Is started. In the hot water filling control, first, a not-shown pouring valve interposed in the pouring passage 25 is opened, and a combustion burner not shown is also burned to heat incoming water from the inlet 21. The hot water is filled by pouring hot water having a predetermined temperature through the outlet channel 22, the pouring channel 25, the outbound channel 23 and the outbound piping 61 to the bathtub 5. Then, the hot water filling is stopped when the predetermined hot water filling amount or the predetermined water level is reached based on the integrated value of the flow rate detection value by the pouring flow sensor not shown or the water level detection value by the internal pressure detection type water level sensor. When the bath automatic switch is turned on, after the hot water filling, the reheating control unit 283 performs reheating control for raising the temperature to a predetermined boiling temperature and maintaining it.

  The bathtub cleaning unit 3 includes a cleaning pipe 31 for supplying hot water for cleaning to a cleaning nozzle 52 installed on the bottom wall of the bathtub 5, a filter 32 interposed in order from the upstream side with respect to the cleaning pipe 31, and a flow rate adjustment. Servo valve 33 for water flow, flow sensor 34 as a pouring flow sensor, pouring solenoid valve 35 as a pouring switching valve, check valves 36 and 36 for backflow prevention, and backflow generation when negative pressure is generated upstream An edge cut-off valve 37 and a venturi tube 38 are provided.

  The cleaning nozzle 52 is installed so as to penetrate the bottom wall of the bathtub 5 and jets cleaning hot water with a predetermined range from the front end opening toward the inner wall. Although only one cleaning nozzle 52 is shown in the figure, two or more cleaning nozzles 52 can be installed in a predetermined arrangement according to the size of the bathtub 5. A drain plug 53 of an automatic opening / closing drive control type is installed on the bottom wall of the bathtub 5, and the drain plug 53 is opened / closed by receiving an opening / closing driving force from the opening / closing drive mechanism 54. . The open / close drive mechanism 54 is installed on the upper surface side of the bathtub 5, and the open / close drive mechanism 54 detects a drain plug state detection sensor 531 that detects whether the drain plug 53 is in an open state or a closed state. (See FIG. 2). The upstream end of the cleaning pipe 31 is branched from the middle of the hot water supply pipe 4 and the downstream end thereof is connected to the cleaning nozzle 52. By opening the pouring electromagnetic valve 35, the heat source machine 2 The hot water at a predetermined temperature discharged from the hot water supply path 22 is supplied as hot water for washing (pouring). Further, the downstream end of the detergent supply pipe 71 is connected to the venturi pipe 38, and if the detergent solenoid valve 72 is opened, the detergent supplied from the detergent tank 7 is connected to the venturi pipe 38 by a negative pressure suction action. It is mixed with the hot water used for washing.

  The operation elements 33, 35, 72 of the bathtub cleaning unit 3 and the operation elements 53, 54 related to drainage of the bathtub 5 are controlled by the cleaning controller 8 based on the input setting output or the command signal output from the cleaning remote controller 81. It has come to be. As shown in FIG. 2, the cleaning controller 8 is disconnected from the heat source unit controller 28 and operates independently of the heat source unit controller 28. For example, a heat source device 2 of a manufacturer different from that of the bathtub cleaning unit 3 is already installed or newly installed, and such a heat source device 2 is provided with communication means and a communication function for link control, which are different from the manufacturer. The case where the bathtub washing | cleaning unit 3 which has not been attached is mentioned as an example.

  The cleaning controller 8 includes a cleaning control unit 82 that performs cleaning control for cleaning the inside of the bathtub 5 by the cleaning nozzle 52, and two types of cleaning time counting (recrement of cleaning remaining time and integration of cleaning integrated time). Timer unit 83 that performs counting), and a single determination processing unit 84 that performs flow rate abnormality determination including other plug determination based on detection information from the flow sensor 34 and whether or not use of the hot water supply in the other plug 41 is started. I have. The cleaning controller 8 additionally includes an original linkage determination processing unit 85 that receives information input from the heat source controller 28 through mutual communication and executes flow rate abnormality determination including the other plug determination described above. In the cleaning controller 8, the cooperation determination processing unit 85 is set so as to exert its function at the time of factory shipment, and the circumstances of each installation site (the bathtub cleaning unit 3 is different from the above-described inability to cooperate, for example). Depending on the manufacturer's heat source device 2 or the like), the changeover setting by the dip switch 80 as the switching means is changed to the linkage determination processing unit 85 so that the single determination processing unit 84 exhibits its function. It has become so. In the case of this embodiment, when the bathtub cleaning unit 3 is installed, the single determination processing unit 84 is changed and set so as to exhibit its function by the switching operation by the dip switch. A reference numeral 841 in FIG. 2 is a connection port of a communication unit for linking with the heat source machine controller 28 and is used when the linkage determination processing unit 85 is made to function. In short, in short, when the bathtub cleaning unit 3 is attached to a heat source unit equipped with a heat source unit controller that can be linked by the same manufacturer, the linkage control mode in which the linkage determination processing unit 85 functions is executed. However, when the bathtub cleaning unit 3 is attached to the heat source unit 2 equipped with the heat source unit controller 28 that cannot be linked by a different manufacturer, so that the single control mode in which the single determination processing unit 84 functions is executed. The change can be selectively set by switching the DIP switch 80.

  The basic cleaning control by the cleaning control unit 82 will be briefly described with reference to FIG. 3. First, the control is started when the user turns on the cleaning switch of the cleaning remote controller 81 (YES in step S1), and the waste water is discharged. If the stopper 53 is in the closed state, the opening / closing drive mechanism 54 is opened to open the drain stopper 53, and the water volume servo valve 33 is switched to open so that the set flow rate (set flow rate Qt described later) is reached. The pouring electromagnetic valve 35 is opened by adjusting the degree (step S2). If the drain plug 53 is in a closed state at the start of control, it is assumed that there is remaining hot water in the bathtub 5 and the hot water is poured after waiting for a predetermined time until the remaining hot water is drained. Operation control for cleaning such as opening switching of the electromagnetic valve 35 or the like is started. When the pouring solenoid valve 35 is converted to open, water enters from the water inlet 21 and sequentially passes through the cleaning pipe 31. The incoming water flow into the water inlet 21 is equal to or higher than the above MOQ. If it becomes, combustion will be started by the hot water supply control part 281 by the side of the heat source machine 2, and hot water will be poured into the washing piping 31 through the hot water supply path 22 and the hot water supply piping 4 (step S3). If it is the end of pouring after a predetermined time has elapsed from the start of pouring (YES in step S4), the detergent solenoid valve 72 is opened and the detergent from the detergent tank 7 is mixed into the washing hot water in the pouring, A detergent solution is sprayed into the bathtub 5 from the cleaning nozzle 52 (step S5). Then, the detergent solenoid valve 72 is closed and the pouring solenoid valve 35 is closed and the pouring is temporarily stopped to wait for the cleaning action to be exerted by the detergent attached to the inner wall surface of the bathtub 5 (step S6). ). After elapse of a predetermined time (YES in step S7), the pouring electromagnetic valve 35 is switched to open to start pouring again, and rinse washing is performed for a predetermined time (step S8). Thereafter, the cleaning control is terminated by performing a cleaning end process such as switching the pouring electromagnetic valve 35 closed or switching the drain valve 53 closed after a predetermined time for draining (step S9).

  Next, processing by the single determination processing unit 84 will be described with reference to FIG. First, a set time is set as the remaining cleaning time (step S10), and whether or not the current pouring flow rate Qd detected by the flow rate sensor 34 is maintained at the set flow rate Qt, that is, on the control of the set flow rate Qt. It is determined whether or not a predetermined time (for example, 5 seconds) is continuously maintained within a tolerance range (for example, plus or minus 2 L / min) (step S11). If the pouring flow rate Qd is substantially constant (YES in step S11), the remaining cleaning time is reset (step S12), and the cleaning time is started (or restarted). The counting of the detergent use time for detecting the remaining amount of detergent in the detergent tank 7 is also started (step S13). Then, again, whether or not the current pouring flow rate Qd (see FIG. 5) is maintained at the set flow rate Qt (Qd is continuously within a tolerance range of plus or minus 2 L / min of the set flow rate Qt for a predetermined time 10. It is determined whether or not the second is maintained (step S14). If the pouring flow rate Qd is maintained within a certain range (YES in step S14), the accumulated number of retries when it is determined that the other plug has been opened is cleared (step S15), and the remaining cleaning time is zero. If not (NO in step S16), step S14 and subsequent steps are repeated, and if the remaining cleaning time becomes zero (YES in step S16), pouring ends (step S17).

  Alternatively, in the determination of the pouring flow rate Qd in the above step S14, if the pouring flow rate Qd is not within the above-mentioned fixed range but fluctuates (NO in step S14), the pouring flow rate Qd is the upper limit of the tolerance of the set flow rate Qt. A state where the flow rate is larger than (the set flow rate Qt + 2 L / min) is not continuously maintained for a predetermined determination time T1 (for example, 20 seconds) (NO in step S18), and the lower value of the tolerance of the set flow rate Qt If a state (reduced fluctuation state) smaller than (set flow rate Qt−0.5 L / min) is continuously maintained for a predetermined determination time T2 (for example, 20 seconds) (YES in step S19), other plugs open (others It is determined (open determination) that the hot-water tap 41 etc. has been opened and the use of hot water other than for washing the bathtub has been started), and the processing after step S25 described later (circled in FIGS. 4 and 5) The other plug is again Flip was whether other plug determination is performed while continuing the pouring (step S20). On the other hand, if the pouring flow rate Qd is larger than the set flow rate Qt + 2 L / min in the above step S18, if the determination time T1 continues (YES in step S18), it is determined that an abnormality has occurred and an abnormal process (such as pouring) is performed. To stop cleaning) (step S21). Further, if the pouring flow rate Qd is smaller than the set flow rate Qt−0.5 L / min in step S19, the determination time T2 does not continue, that is, the condition for continuous maintenance for 10 seconds is not satisfied, but the pouring flow rate Qd is constant. If it is within the flow rate range, the determination in step S14 is repeated again (NO in step S19).

  In the determination of the pouring flow rate Qd in the above step S11, if the pouring flow rate Qd is outside the tolerance range of plus / minus 2 L / min of the set flow rate Qt or does not satisfy the condition for continuous maintenance for a predetermined time, The pouring flow rate Qd is not continuously maintained at a flow rate greater than the upper limit value of the set flow rate Qt (the set flow rate Qt + 2 L / min) for a predetermined determination time T1 (for example, 20 seconds) (in step S22). NO), if the state smaller than the lower limit value of the tolerance of the set flow rate Qt (set flow rate Qt−2L / min) is continuously maintained for a predetermined determination time T2 (for example, 20 seconds) (YES in step S23), the other plug It is determined to be open (open determination), and the other plug determination (determination of whether or not it is closed again) is performed by the processing after step S25 while continuing pouring (step S24). As the other plug determination, the cleaning time (remaining cleaning time and total cleaning time) is stopped, and if the detergent usage time for detecting the remaining amount of detergent in the detergent tank 7 is being counted, the count is combined. Whether or not the pouring flow rate Qd returns to the tolerance range of the set flow rate Qt over a predetermined set time T3 (for example, 30 minutes) after the start of other plug determination (step S25). Whether or not the pouring flow rate is restored is monitored (NO in step S26, steps S27 to S29). In step S26, even if a predetermined set time T3 (for example, 30 minutes) after the start of other plug determination has elapsed, the pouring flow rate Qd does not return to the tolerance range of the set flow rate Qt (the pouring flow rate). If it does not return to the original), it is determined that there is a possibility of occurrence of an abnormality, and an abnormal process such as forcibly terminating the process such as cleaning is executed (YES in step S26, step S31).

  That is, first, the determination value set in advance (the lower limit value of the tolerance set for closing determination) is I (set flow rate Qt−0.5 L / min) or II (set flow rate Qt−2L). / Min) is determined (step S27). If I is set, the pouring flow rate Qd is larger than the determination value (set flow rate Qt−0.5 L / min) for a predetermined determination time T4 (for example, 5 seconds). (Step S28), if it is II, the pouring flow rate Qd is determined at a flow rate greater than the determination value (set flow rate Qt-2L / min). A determination is made as to whether or not the condition of maintaining for a time T4 (for example, 5 seconds) is satisfied (step S29). If such a condition is not satisfied, the process returns to step S26 and is repeated until the set time T3 elapses (NO in step S28 or step S29). If the condition is satisfied (YES in step S28 or step S29), it is determined (closed determination) that the flow reduced by opening the other plug is restored, that is, the other plug is closed again (step S32), and step S13. Then, the count of the cleaning time that was stopped in step S25 is restarted (step S13), and the processes after step S14 are executed.

  If the pouring flow rate Qd is higher than the set flow rate Qt + 2 L / min in the above step S22 for the determination time T1 (YES in step S22), it is determined that an abnormality has occurred and an abnormality process is performed ( Step S30). Further, if the pouring flow rate Qd is smaller than the set flow rate Qt-2L / min in step S23, if the determination time T2 does not continue, that is, the condition for continuous maintenance for 20 seconds is not satisfied, the pouring flow rate Qd is within a constant flow range. If YES, step S11 is repeated again (NO in step S23).

  In the case of other plug determination by the single determination processing unit 84 of the cleaning controller 8 described above, information from the side of the heat source unit 2 (heat source unit controller 28) is required that the other plug has been closed after the other plug opened. Therefore, it is possible to reliably discriminate based on the information of only the bathtub cleaning unit 3. For this reason, it becomes possible to attach the bathtub cleaning unit 3 to the heat source unit 2 that is impossible due to the fact that the information communication is based on different manufacturers. Even if it is a case attached to 2, the washing | cleaning of the bathtub 5 can be reliably performed now without inconvenience. In addition, since the linkage determination processing unit 85 is also provided and can be switched to and from the single determination processing unit 84, the bathtub cleaning unit 3 can be used either as a heat source device of the same manufacturer or a heat source device 2 of a different manufacturer. The versatility of the bathtub cleaning unit 3 can be improved.

  In the above embodiment, the case where hot water discharged from the heat source device 2 is supplied (pouring) as cleaning hot water to the bathtub cleaning unit 3 has been described. Water may be supplied (poured) to the bathtub washing unit 3 as washing hot water. If the water injection is set so that the heat source unit 2 is not in a combustion operation, the water is not hot water but the bathtub washing unit 3. Therefore, “hot water” in the claims includes water injection as well.

It is a schematic diagram which shows embodiment of this invention. It is a block block diagram of the various controllers which perform control. It is a flowchart which shows the basic cleaning control content. It is a flowchart which shows the first half of the control content which concerns on flow volume abnormality determination processing. It is a flowchart which shows the second half part of the flowchart of FIG.

Explanation of symbols

2 Heat source machine 3 Bathtub cleaning unit (tub cleaning device)
5 Bath 8 Cleaning Controller 28 Heat Source Controller 31 Cleaning Pipe 34 Flow Sensor (Pouring Water Flow Sensor)
35 Pouring solenoid valve (Pouring pouring valve)
41 Hot water tap 80 Dip switch (switching means)
82 Cleaning control unit 83 Timer unit 84 Single determination processing unit 85 Linkage determination processing unit

Claims (5)

A bathtub cleaning device attached to a heat source device that receives and heats incoming water and supplies hot water to the hot water tap, receiving hot water as one of the hot water taps, and a cleaning pipe for pouring the hot water into the bathtub as washing water, A pouring changeover valve for switching between supply and shutoff of pouring water through the washing pipe by opening and closing, a pouring flow sensor for detecting the pouring flow rate poured through the washing pipe, and the pouring for cleaning the bathtub. In a bathtub cleaning device provided with a cleaning controller that performs operation control on an operating element including a hot water switching valve,
The washing controller
Timer means for starting the counting of the cleaning time with the start of the cleaning process by pouring the cleaning water into the bathtub by opening the pouring switching valve;
The detected flow rate output from the pouring flow rate sensor is monitored at the start of the cleaning process, and when the detected flow rate changes below the set flow rate, it is determined that another hot-water tap has been opened. Whether or not the other hot-water taps have been closed again by temporarily stopping the counting of the washing time by the timer means while maintaining the hot water switching valve in an open state and continuing the pouring of the washing hot water through the washing pipe. A single determination processing unit that independently determines based on the state of the detected flow rate,
Bathtub cleaning device characterized by that. The bathtub cleaning device according to claim 1,
The said single determination process part is a bathtub washing apparatus comprised so that it may determine with the other hot-water tap opened when the state to which the said detection flow volume decreased and fluctuated from the setting flow flow continued for the predetermined | prescribed determination time. The bathtub cleaning device according to claim 1 or 2,
The single determination processing unit determines that the other hot-water tap is closed when the detected flow rate is increased and returned to the set flow rate or more within a set time range after it is determined that the other hot-water tap is opened. And the bathtub washing | cleaning apparatus comprised so that the count of the said washing | cleaning time might be restarted with this determination. The bathtub cleaning device according to claim 3,
The said single determination process part is a bathtub washing apparatus comprised so that it may determine with the said other hot-water tap closed when the state which the said detection flow volume increased and returned to the setting flow rate or more continued for the predetermined determination time. The bathtub cleaning apparatus according to any one of claims 1 to 4, wherein when the cleaning controller determines that the other hot-water tap has been opened, the timer controller temporarily stops counting the cleaning time by the timer means. Linkage determination processing that switches the pouring valve switching valve closed and then determines whether or not the other hot-water tap has been closed again by receiving information on the operating status of the heat source unit by linking with the heat source unit And a switching means for switching which process of the linkage determination processing unit and the single determination processing unit is executed.

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