JP6825967B2 - Bathtub cleaning device - Google Patents

Description

The present invention relates to a bathtub cleaning device that automatically cleans a bathtub. In particular, the present invention relates to a bathtub cleaning device provided with a flow rate setting mode for manually setting a set flow rate of a cleaning liquid during a cleaning operation.

Conventionally, there is known a bathtub cleaning device that sprays a cleaning liquid into a bathtub to wash away dirt adhering to the inner wall surface of the bathtub. For example, a bathtub cleaning device in which the injection angle is set so that the cleaning liquid is sprayed over the entire inner wall surface of the bathtub or the entire surface of the bathtub lid has been proposed (Patent Document 1).

By the way, the inner wall surface of the bathtub is most likely to get dirty in the area where the waterline contacts when the bather is in the bath. Therefore, in order to efficiently execute the cleaning operation, it is desirable to spray the cleaning liquid on the region where the most dirt adheres. Therefore, in Patent Document 1, the standard amount of hot water to be poured into the bathtub is set, and the injection angle is such that the cleaning liquid is sprayed into the area where the water line and the inner wall surface of the bathtub are in contact with each other when the standard amount of hot water is poured. Is set.

However, the conditions for using the bathtub differ depending on the household. For example, even if the size of the bathtub is the same, the amount of hot water constantly poured into the bathtub differs depending on whether a plurality of people take a bath at the same time or only one person takes a bath. Therefore, even if the standard amount of hot water is set according to the size of the bathtub, a water line is formed at a position different from that when the standard amount of hot water is poured, and the desired cleaning effect cannot be obtained. There's a problem.

In addition, in a bathtub cleaning device that injects cleaning liquid using tap water pressure of tap water, the flow rate of hot water supplied from a heat source device such as a water heater to the bathtub cleaning device fluctuates if the tap water pressure differs depending on the region. Therefore, the flow rate of the cleaning liquid tends to fluctuate. Further, since the heat source machine is often installed outdoors and the pipe length from the heat source machine to the cleaning nozzle differs depending on the installation environment, the flow rate of the cleaning liquid tends to fluctuate due to the difference in the pipe length. Therefore, the standard amount of hot water according to the size and usage conditions of the bathtub is assumed in advance, and even if the standard amount of hot water is poured into the bathtub, the water line when hot water is poured at the assumed standard amount of hot water The cleaning liquid may not be sprayed onto the area in contact with the inner wall surface of the bathtub, and a sufficient cleaning effect may not be obtained.

Japanese Unexamined Patent Publication No. 10-328124

The present invention solves the above problems, and an object of the present invention is to inject a cleaning liquid at a predetermined injection position regardless of the usage conditions of the bathtub and the installation environment of the bathtub cleaning device to obtain stable cleaning performance. The purpose is to provide a bathtub cleaning device.

According to the present invention
A detergent mixing part that mixes the detergent supplied from the detergent tank and the hot water supplied from the heat source machine to generate a cleaning liquid,
A cleaning nozzle that sprays the cleaning liquid generated by the detergent mixing part into the bathtub,
A flow rate adjusting unit that adjusts the flow rate of the cleaning liquid sprayed from the cleaning nozzle to a predetermined set flow rate,
A manual flow rate setting unit that manually sets the set flow rate of the cleaning liquid sprayed from the cleaning nozzle,
When the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle is set by the manual flow rate setting unit, a bathtub cleaning device including a storage unit that stores the set flow rate of the cleaning liquid after the setting as a new set flow rate is provided.

The tub cleaning device includes a flow rate adjusting unit that adjusts the flow rate of the cleaning liquid sprayed from the cleaning nozzle to a set flow rate, a manual flow rate setting unit that manually sets the set flow rate of the cleaning liquid sprayed from the cleaning nozzle, and a manual flow rate. When the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle is set in the setting unit, it has a storage unit that stores the set flow rate of the cleaning liquid after the setting as a new set flow rate. Therefore, at the installation site of the bath cleaning device, the bathtub The injection position of the cleaning liquid ejected from the cleaning nozzle can be easily changed manually according to the usage conditions and the installation environment of the bath cleaning device.

Preferably, the bathtub cleaning device is configured to be capable of operating in a flow rate setting mode for setting a set flow rate of the cleaning liquid to be ejected from the cleaning nozzle during the cleaning operation.
When operating in the flow rate setting mode, the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle is set by the manual flow rate setting unit.

According to the bathtub cleaning device, the operation in the flow rate setting mode for setting the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle during the cleaning operation can be executed, so that the bathtub cleaning can be performed without executing the entire cleaning operation. At the installation site of the device, it is possible to check whether the cleaning liquid is ejected from the cleaning nozzle to an appropriate injection position. Then, according to the above-mentioned bathtub cleaning device, when the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle is set by the manual flow rate setting unit during the operation in the flow rate setting mode, the set flow rate of the cleaning liquid after the setting becomes a new set flow rate. Is stored, and the flow rate adjusting unit adjusts the flow rate of the cleaning liquid to be ejected from the cleaning nozzle during the cleaning operation so as to be a newly set set flow rate, so that the cleaning liquid can be ejected to an appropriate injection position. As a result, for example, even in a bathtub cleaning device in which the standard amount of hot water to be poured into the bathtub is assumed and the injection position of the cleaning liquid is preset, the usage conditions of the bathtub and the installation of the bathtub cleaning device are installed at the installation site of the bathtub cleaning device. The injection position of the cleaning liquid can be easily manually changed to a more appropriate position according to the environment.

Preferably, the bathtub cleaning device is configured to be capable of continuously performing the cleaning test run mode before or after the operation in the flow rate setting mode.

According to the bathtub cleaning device, the operation in the cleaning test run mode can be executed continuously before or after the operation in the flow rate setting mode. Therefore, when installing the bathtub cleaning device, the installer forgets to set the setting. It can be prevented and the set flow rate can be set reliably.

As described above, according to the present invention, since the injection position of the cleaning liquid can be easily changed manually at the installation site of the bathtub cleaning device, not only the bathtub usage conditions such as the number of regular bathers but also the water supply It is possible to provide a bathtub cleaning device that can obtain stable cleaning performance even if the installation environment of the bathtub cleaning device such as water pressure and pipe length is different.

FIG. 1 is a schematic configuration diagram showing a bathtub cleaning device according to a first embodiment of the present invention. FIG. 2 is a flowchart showing a control operation in a trial run of the bathtub cleaning device according to the first embodiment of the present invention. FIG. 3 is a schematic configuration diagram showing a bathtub cleaning device according to a second embodiment of the present invention. FIG. 4 is a flowchart showing a control operation in a trial run of the bathtub cleaning device according to the second embodiment of the present invention.

(Embodiment 1)
Hereinafter, the bathtub cleaning device according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing a bathtub cleaning device according to the present embodiment. As shown in FIG. 1, a bathtub 1 is arranged along the bathroom wall in the bathroom BR, and a water heater 6 which is a heat source machine is arranged outside the bathroom BR (for example, outdoors). Although not shown, the bathtub 1 constitutes an inner peripheral wall of the bathtub that constitutes the water storage portion, an upper edge flange portion that horizontally projects outward from the opening edge of the water storage portion over the entire circumference, and an outer surface of the bathtub 1. An apron is provided, and a bathtub space 10 is formed below the upper edge flange portion.

At the bottom of the bathtub 1, a drain plug 2 for draining bathtub water and a cleaning nozzle 7 for injecting hot water or a cleaning liquid are provided. Although not shown, the cleaning nozzle 7 includes an injection port that radially injects hot water or cleaning liquid supplied through the cleaning pipe 43 over the entire inner peripheral surface of the water storage portion of the bathtub 1. This injection port is configured so that the injection position of the hot water or the cleaning liquid fluctuates in the upper and lower regions of the inner peripheral surface of the water storage portion according to the flow rate of the hot water or the cleaning liquid. The cleaning nozzle 7 may be provided separately from the bathtub 1. A drain switch 5 is provided on the upper edge flange portion of the bathtub 1, and the drain switch 5 is connected to a drain plug controller 50 for opening and closing the drain plug 2 provided below the upper edge flange portion. Therefore, when the user operates the drain switch 5 or the cleaning switch of the remote controller R described later, the drain plug 2 is opened and the bathtub water in the bathtub 1 is drained.

Although not shown, the water heater 6 includes a gas burner and a hot water heat exchanger. A gas supply pipe 78 is connected to the gas burner. The hot water supply heat exchanger includes a water supply pipe 63 for supplying clean water from a water supply source, and a hot water supply pipe for supplying hot water heated from the water heater 6 to a hot water tap 65 such as a curan or a shower and a main body unit 4 described later. 66 is connected. Further, a water heater controller 60 for controlling hot water filling operation and hot water supply operation is incorporated in the water heater 6, and a water supply sensor provided in the water supply pipe 63, a hot water supply temperature sensor provided in the hot water supply pipe 66, and the like are incorporated. Various sensors, water supply pipe 63, hot water supply pipe 66, and various control valves, ignition devices, power supply boxes provided in the gas supply pipe 78, and a remote controller for a water heater (not shown) are connected to the water heater controller 60 via electrical wiring. Has been done. In the present embodiment, the water heater 6 has only a hot water heat exchanger, but the water heater 1 is provided with a circulation metal fitting, and the water heater 6 is provided with a hot water heat exchanger and a bath heat exchanger to provide a reheating function. You may use the water heater which has. Moreover, you may use an electric water heater or a heat pump type water heater.

The water supply pipe 63 and the hot water supply pipe 66 are branched into a hot water supply plug 65 side and a main body unit 4 side arranged on the back surface of the ceiling wall of the bathroom BR, respectively. The first temperature control water supply pipe 63a and the first hot water supply pipe 66a on the upstream side branching from the water supply pipe 63 and the hot water supply pipe 66 to the main body unit 4 side respectively have check valves 71 and 72 and a hot water mixing section 80. It is connected. More specifically, the hot and cold water mixing unit 80 includes a water supply temperature sensor 81, a water amount sensor 83, and a water amount adjusting valve 85, which are interposed in the first temperature adjusting water supply pipe 63a on the upstream side in order from the upstream side, and the upstream side. The first hot water supply pipe 66a is provided with a hot water temperature sensor 82, a hot water amount sensor 84, and a hot water amount adjusting valve 86, which are sequentially provided from the upstream side. Further, antifreezing heaters 73 and 74 are arranged around the pipes of the first temperature control water supply pipe 63a and the first hot water supply pipe 66a on the upstream side near the check valves 71 and 72, respectively. The first temperature control water supply pipe 63a and the first hot water supply pipe 66a on the upstream side merge on the downstream side of the water amount adjusting valve 85 and the hot water amount adjusting valve 86 to form one second hot water supply pipe 66b on the upstream side. ing. A temperature sensor 75 is interposed in the second hot water supply pipe 66b on the upstream side.

The second hot water supply pipe 66b on the upstream side is connected to the hot water tank 47, which is a hot water storage unit, via a solenoid valve 46 for refilling water. Further, the hot water supply pipe 66d for hot water filling is branched from the second hot water supply pipe 66b on the upstream side connecting the hot water mixing unit 80 and the hot water tank 47, and the hot water supply pipe 66d for hot water filling is filled with hot water. It is connected to a stile faucet 79 located above the bathtub 1 via a solenoid valve 90. An antifreeze heater 76 is arranged around the pipe of the hot water supply pipe 66d for hot water filling between the branch portion of the second hot water supply pipe 66b on the upstream side and the solenoid valve 90 for hot water filling.

Although not shown, the upper part of the hot water tank 47 is provided with a water replenishment port for discharging hot water supplied from the second hot water supply pipe 66b on the upstream side and an overflow port located below the water replenishment port. Further, an outlet is provided at the bottom of the hot water tank 47, and a third hot water supply pipe 66c on the downstream side for supplying hot water to the pump 48 is connected to the outlet. Further, an overflow pipe 68 extending in the bathtub pan is connected to the overflow port. Therefore, a spout space is formed between the refill port and the overflow port, and the second hot water supply pipe 66b on the upstream side and the third hot water supply pipe 66c on the downstream side are separated by the hot water tank 47. Therefore, the hot water tank 47 also functions as a backflow prevention unit.

A pump 48 and a downstream solenoid valve 49 are interposed in the third hot water supply pipe 66c on the downstream side in order from the upstream side. By driving and stopping the pump 48 with a control signal from the main unit controller 40 and opening and closing the downstream solenoid valve 49, hot water is supplied and stopped from the hot water tank 47 to the cleaning liquid generation unit 3. Hot water or cleaning liquid is injected and stopped from the cleaning nozzle 7. Further, by controlling the drive voltage of the pump 48 with the control signal from the main unit controller 40, the flow rates of the hot water and the cleaning liquid injected from the cleaning nozzle 7 are adjusted. Therefore, in the present embodiment, the drive control unit of the pump 48 in the pump 48 and the main unit controller 40 functions as a flow rate adjusting unit for adjusting the flow rate of the cleaning liquid injected from the cleaning nozzle 7.

Although not shown, the main body unit 4 includes a casing in which each component such as the hot water mixing section 80, the hot water tank 47, and the pump 48 described above is housed, and the vicinity of the hot water mixing section 80 in the casing is inside the casing. A low temperature sensing temperature sensor 77 that detects the temperature is provided. Further, the main body unit 4 incorporates the main body unit controller 40, and the water supply temperature sensor 81, hot water temperature sensor 82, water amount sensor 83, hot water amount sensor 84, water amount adjusting valve 85, hot water amount adjusting valve 86, and freezing described above are incorporated. Prevention heaters 73, 74, 76, temperature sensor 75, low temperature sensor temperature sensor 77, water replenishment electromagnetic valve 46, pump 48, downstream electromagnetic valve 49, hot water filling electromagnetic valve 90, remote control R, hot water tank (not shown) The electrodes and the power supply box in 47 are connected to the main body unit controller 40 via electrical wiring. Further, the main body unit controller 40 is connected to the cleaning unit controller 30, which will be described later, so as to be capable of bidirectional communication.

In the space 10 in the bathtub located below the upper edge flange portion of the bathtub 1, the detergent tank 41 for storing the detergent, the venturi-type detergent mixing portion 51, and the detergent tank 41 constituting the cleaning liquid generation unit 3 are provided. A detergent introduction pipe 44 for guiding the detergent to the detergent mixing portion 51 is arranged, and the detergent introduction pipe 44 includes first and second detergent valves 42a and 42b for adjusting the supply of the detergent to the detergent mixing portion 51. It is installed. The detergent mixing portion 51 and the cleaning nozzle 7 are connected via a cleaning pipe 43. The detergent tank 41, the first and second detergent valves 42a and 42b, and the detergent mixing portion 51 may be arranged apart from each other in the bathtub space 10 according to the size of the bathtub space 10. Good.

The main body unit 4 behind the ceiling and the cleaning liquid generation unit 3 in the bathroom BR are connected by a hot water pipe 67 penetrating the bathroom wall on one side of the bathtub 1. More specifically, the upstream end of the hot water pipe 67 is connected to the downstream solenoid valve 49 of the main body unit 4, and the downstream end is connected to the detergent mixing portion 51 of the cleaning liquid generation unit 3. Therefore, with the first and second detergent valves 42a and 42b opened, the pump 48 is driven and the downstream electromagnetic valve 49 is opened, and the hot water stored in the hot water tank 47 is discharged to the hot water pipe 67. When the hot water is supplied to the detergent mixing unit 51 via the detergent, the negative pressure generated when the hot water passes through the detergent mixing unit 51 mixes the detergent and the hot water to generate a cleaning liquid, and passes through the cleaning pipe 43 to the cleaning nozzle 7. The cleaning liquid is sprayed from the bathtub 1 to clean the bathtub 1. Further, with the first and second detergent valves 42a and 42b closed, the pump 48 is driven in the same manner, and the downstream solenoid valve 49 is opened to use the hot water stored in the hot water tank 47 as hot water. When the water pipe 67 supplies the detergent to the detergent mixing section 51, only hot water is ejected from the cleaning nozzle 7 to perform pre-cleaning and rinsing of the bathtub 1.

Although not shown, the cleaning liquid generation unit 3 includes a casing in which the above-mentioned detergent mixing portion 51 and the first and second detergent valves 42a and 42b are housed. Further, the cleaning unit controller 30 is incorporated in the cleaning liquid generation unit 3, and the electrodes of the first and second detergent valves 42a and 42b and the detergent tank 41 (not shown) described above have electrical wiring with the cleaning unit controller 30. Connected via. Further, the cleaning unit controller 30 is connected to the drain plug controller 50 and the main body unit controller 40 so as to be capable of bidirectional communication.

A remote controller R for hot water filling operation and washing operation is arranged in the bathroom BR, and in the present embodiment, the remote controller R functions as a manual flow rate setting unit. The remote controller R includes an operation switch 101, a hot water filling switch 102 for performing a hot water filling operation, a washing switch 103 for performing a washing operation, a washing / hot water filling switch 104 for performing a hot water filling operation after the washing operation, and hot water for setting the hot water filling temperature. The tension temperature setting switch 105, the hot water and hot water switch 106 for starting and stopping the hot water and hot water operation, the washing course setting switch 107 for selecting the washing course, the timer switch 108, and the operating state and the set temperature are displayed. A display unit 110 and the like are provided. Although not shown, the remote controller R is connected to the main body unit controller 40 via electrical wiring, and is connected to the cleaning unit controller 30 and the drain plug controller 50 via the main body unit controller 40. Each controller is composed of a microcomputer equipped with a CPU, ROM, and RAM, and operates a drain plug 2, a cleaning liquid generation unit 3, a main body unit 4, and a water heater 6 according to a stored control program to fill water. Operation, washing operation, etc. are executed.

Although not shown, the water heater controller 60 includes a hot water supply control unit that controls the combustion of the gas burner, and the main unit controller 40 includes a cleaning operation control unit that controls the cleaning operation and a trial operation control unit that controls the trial operation. Further, in the memory of the main unit controller 40, a set value of the drive voltage of the pump 48 for changing the set flow rate of the cleaning liquid to be injected from the cleaning nozzle 7 in a plurality of stages (here, 7 stages of levels 0 to 6) is stored. In addition to being stored, one of them is registered as an initial value at the time of shipment from the factory.

Next, the control operation of the test run mode in the bathtub cleaning device of the present embodiment will be described with reference to FIG. The water heater 6 ignites a gas burner when the amount of water detected by the water supply sensor (not shown) provided in the water supply pipe 63 exceeds the predetermined amount of water, and when the amount of water detected by the water supply sensor becomes less than the predetermined amount of water. It is configured to perform point fire extinguishing control to extinguish the gas burner.

After the installation work of the water heater 6, the cleaning liquid generation unit 3, the main body unit 4, the remote controller R, etc. is completed, the detergent is poured into the detergent tank 41, and the operation switch of the remote controller for the water heater is turned on, for example. When the installer turns on the test run switch that simultaneously presses the cleaning / hot water filling switch 104 and the washing course setting switch 107 of the remote controller R, the flow rate setting mode, cleaning test run mode, and hot water filling test run that set the set flow rate of the cleaning liquid are set. The test run mode control program that continuously performs each operation of the mode is started, and the operation in the flow rate setting mode is first started (step ST1).

In the operation in this flow rate setting mode, the drain plug 2 is opened by the drain plug controller 50, and when a predetermined drainage time elapses after the drain plug 2 is opened, the main body unit controller 40 is only on the main body unit 4 side. The solenoid valve 46 for refilling water is opened so that hot water is supplied from the hot water mixing unit 80. Then, tap water pressure supplies clean water from the water supply pipe 63 to the water heater 6, and when a water supply sensor (not shown) detects an amount of water equal to or greater than a predetermined amount, the water heater controller 60 ignites the gas burner to perform hot water supply operation. Let's get started. When the hot water supply operation is started, the opening degrees of the water amount adjusting valve 85 and the hot water amount adjusting valve 86 are adjusted in the hot water mixing unit 80 so that the temperature of the hot water detected by the temperature sensor 75 becomes a predetermined temperature, and the first on the upstream side. Hot water adjusted to a predetermined temperature is supplied to the hot water tank 47 via the 1 temperature control water supply pipe 63a and the first and second hot water supply pipes 66a and 66b (steps ST2 to ST4).

Next, when it is detected by the electrodes in the hot water tank 47 that hot water has been stored up to a predetermined water level, the main unit controller 40 closes the water replenishment solenoid valve 46. Then, the pump 48 is driven by the initial value registered in the memory (for example, a drive voltage at which a flow rate of 6.5 L / min can be obtained), and the downstream solenoid valve 49 and the first and second detergent valves 42a and 42b are operated. To open the valve. As a result, the detergent and hot water are supplied to the detergent mixing unit 51 to generate a cleaning liquid, and the cleaning liquid is ejected from the cleaning nozzle 7 into the bathtub 1 at the set flow rate of the initial value (steps ST5 to ST8).

At this time, if the injection position of the cleaning liquid ejected from the cleaning nozzle 7 does not match the area where the water line when the assumed standard amount of hot water is poured and the inner wall surface of the bathtub 1 are in contact with each other, the construction is performed. The person operates the UP / DOWN key of the cleaning course setting switch 107 of the remote controller R to increase or decrease the drive voltage of the pump 48. Then, the flow rate of the cleaning liquid is changed within a predetermined range (for example, a flow rate range of 5.0 L / min to 8.0 L / min) according to the operation of changing the flow rate with the cleaning course setting switch 107. Then, it was confirmed that the cleaning liquid was sprayed mainly to the area where the water line and the inner wall surface of the bathtub 1 were in contact with each other when the assumed standard amount of hot water was poured, and the builder When the cleaning / hot water filling switch 104 of the remote controller R is pressed again, the set value is registered in the memory in order to set the changed flow rate as the new set flow rate during the cleaning operation. Further, the downstream solenoid valve 49 and the first and second detergent valves 42a and 42b are closed, and the pump 48 is further stopped to end the operation in the flow rate setting mode (steps ST9 to ST15).

When the set flow rate is set by the operation in the flow rate setting mode, the mode shifts to the cleaning test run mode. Although not shown, in the operation of this cleaning test run mode, each step is executed in the order of a preliminary rinsing step of injecting only hot water → a cleaning step of injecting cleaning liquid → a rinsing step of injecting only hot water, and in each step, the same as above. Then, the water replenishing electromagnetic valve 46, the downstream electromagnetic valve 49, and the first and second detergent valves 42a and 42b are opened and closed, and the pump 48 is driven by the set value set in the flow rate setting mode to drive the cleaning nozzle 7. Hot water or cleaning liquid is sprayed from the water (steps ST16 to ST17).

When the operation in the cleaning test run mode is completed, the mode shifts to the hot water filling test run mode. Although not shown, in the operation in this hot water filling test run mode, the drain plug 2 is closed and the hot water filling solenoid valve 90 is opened so that hot water is supplied from the hot water mixing unit 80 only to the stile faucet 79 side. Let me. Then, in the same manner as described above, tap water pressure supplies tap water to the water heater 6 from the water supply pipe 63, and the hot water supply operation is started. When the hot water supply operation starts, the opening degrees of the water amount adjusting valve 85 and the hot water amount adjusting valve 86 are adjusted so that the temperature of the hot water detected by the temperature sensor 75 becomes a predetermined temperature, and the hot water for filling water is supplied up to the predetermined set amount. Hot water is supplied from the stile faucet 79 to the bathtub 1 via the pipe 66d (steps ST18 to ST19).

When the predetermined amount of hot water is reached, the hot water filling solenoid valve 90 is closed, the operation of the water heater 6 is stopped, and the remote controller R notifies the completion of the trial run (step ST20).

According to the bathtub cleaning device, the injection position of the cleaning liquid ejected from the cleaning nozzle 7 coincides with the area where the water line when the assumed standard amount of hot water is poured and the inner wall surface of the bathtub 1 come into contact with each other. If not, the installer or the like can manually specify the remote control R to control the drive of the pump 48, adjust the flow rate of the cleaning liquid, and register an appropriate set flow rate in the memory. Therefore, the bathtub cleaning device is installed. The cleaning liquid injection position can be changed to a position suitable for the cleaning operation while checking the cleaning liquid injection position at the site.

Further, according to the bathtub cleaning device, the operation in the flow rate setting mode for setting the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle 7 is feasible, so that the cleaning liquid can be operated without performing the entire cleaning operation. It is possible to confirm and change the injection position of. Then, in the operation in the flow rate setting mode, it is confirmed that the cleaning liquid is not sprayed into the area where the water line formed when the assumed standard amount of hot water is poured and the inner wall surface of the bathtub 1 come into contact with each other. If this is the case, the installer or the like can easily change the set flow rate of the cleaning liquid in the cleaning operation by operating the remote controller R. As a result, in the bathtub cleaning device in which the standard amount of hot water to be poured into the bathtub 1 is assumed and the injection position of the cleaning liquid is preset, the usage conditions of the bathtub 1 and the installation of the bathtub cleaning device are installed at the installation site of the bathtub cleaning device. The cleaning liquid can be sprayed at an appropriate set flow rate according to the environment. If the operation in the cleaning test run mode is continuously executed after the operation in the flow rate setting mode, the change in the set flow rate will not be forgotten, so that the setting can be performed reliably.

Further, according to the bathtub cleaning device, since the second hot water supply pipe 66b on the upstream side and the third hot water supply pipe 66c on the downstream side are cut off by the hot water tank 47 having a spout space, the water heater 6 is used. Even if the tap water pressure of the supplied tap water fluctuates, the flow rate of the hot water discharged by the pump 48 does not fluctuate. Therefore, even if the water heater 6 is installed at a place away from the bathroom BR, it is possible to prevent deviation from the set flow rate.

Therefore, according to the bathtub cleaning device of the present embodiment, the injection position of the cleaning liquid can be manually changed at the installation site of the bathtub cleaning device, so that not only the usage conditions of the bathtub 1 such as the number of regular bathers but also the usage conditions of the bathtub 1 can be changed. It is possible to provide a bathtub cleaning device that can obtain stable cleaning performance even if the installation environment of the bathtub cleaning device such as tap water pressure and pipe length is different. Further, according to the bathtub cleaning device of the present embodiment, the injection position of the cleaning liquid can be changed according to the usage conditions of the bathtub 1 and the installation conditions of the bathtub cleaning device. Therefore, for example, different bathers can take a bath continuously. In a nursing facility where it is necessary to wash the bathtub every time the bathtub is bathed, even if the bathtub lid is not placed on the bathtub 1, the cleaning liquid is intensively sprayed to a predetermined injection position on the inner wall surface of the bathtub 1 to make the bathtub. It is possible to prevent the cleaning liquid from scattering from 1.

(Embodiment 2)
The bathtub cleaning device according to the present embodiment does not have the hot water tank 47, the pump 48, and the downstream solenoid valve 49 provided in the main body unit 4 of the first embodiment, and does not have the upstream side second hot water. The supply pipe 66b is provided with an on-off valve 55 for injecting and stopping the cleaning liquid from the cleaning nozzle 7. Therefore, the flow rate of the cleaning liquid is adjusted by adjusting the opening degrees of the water amount adjusting valve 85 and the hot water amount adjusting valve 86 provided in the first temperature control water supply pipe 63a and the first hot water supply pipe 66a on the upstream side, respectively. Therefore, in the present embodiment, the water amount adjusting valve 85 and the hot water amount adjusting valve 86 arranged in the hot water supply path, and the valve drive unit of the main body unit controller 40 that controls the opening degree thereof adjust the flow rate of the cleaning liquid. Functions as a flow rate regulator. The basic configuration other than the injection and stop of the cleaning liquid and the adjustment of the flow rate of the cleaning liquid is substantially the same as that of the first embodiment. Therefore, the same configuration as that of the first embodiment will be omitted by using the same reference number.

FIG. 3 is a schematic configuration diagram of the bathtub cleaning device according to the present embodiment. As shown in FIG. 3, an on-off valve 55, a check valve 56, and an air release valve 57 are interposed on the downstream side of the hot and cold water mixing section 80. Therefore, in the present embodiment, the check valve 56 and the air release valve 57 function as a check valve. Further, the third hot water supply pipe 66c on the downstream side is provided with a switching solenoid valve 91 that switches the flow path between the stile faucet 79 side and the cleaning liquid generation unit 3 side. More specifically, the switching solenoid valve 91 is composed of a three-way valve, the third hot water supply pipe 66c on the downstream side is connected to the input side, and the hot water pipe 67 and the hot water connected to the stile faucet 79 are connected to the output side. It is connected to the hot water supply pipe 66d for tensioning. Although not shown, the memory of the main unit controller 40 has the first embodiment in order to change the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle 7 in a plurality of stages (here, 7 stages of levels 0 to 6). Instead of the set value for controlling the drive of the pump 48 in the above, the set value of the total flow rate of the water amount sensor 83 and the hot water amount sensor 84 is stored, and one of them is registered as an initial value at the time of factory shipment.

Next, the control operation of the test run mode in the bathtub cleaning device of the present embodiment will be described with reference to FIG. Similar to the first embodiment, when the installer turns on the test run switch that simultaneously presses the cleaning / hot water filling switch 104 and the cleaning course setting switch 107 of the remote controller R, the operation in the flow rate setting mode is started. When a predetermined drainage time elapses after the drain plug 2 is opened by the drain plug controller 50 and the drain plug 2 is opened, the main body unit controller 40 opens the on-off valve 55 and the cleaning liquid generation unit 3 side. The flow path of the switching solenoid valve 91 is switched so that hot water is supplied only to the hot water. Then, tap water pressure supplies clean water from the water supply pipe 63 to the water heater 6, and when a water supply sensor (not shown) detects an amount of water equal to or greater than a predetermined amount, the water heater controller 60 ignites the gas burner to perform hot water supply operation. Let's get started. When the hot water supply operation is started, the hot water amount adjusting valve 85 and the hot water amount adjusting so that the temperature of the hot water water detected by the temperature sensor 75 in the hot water mixing unit 80 becomes a predetermined temperature and the hot water amount becomes the initial value registered in the memory. The opening degree of the valve 86 is adjusted to open the first and second detergent valves 42a and 42b. As a result, the detergent and hot water are supplied to the detergent mixing section 51 to generate a cleaning liquid, and the cleaning liquid is ejected from the cleaning nozzle 7 into the bathtub 1 at the set flow rate of the initial value (steps ST21 to ST25).

If the injection position of the cleaning liquid ejected from the cleaning nozzle 7 does not match the area where the water line when the assumed standard amount of hot water is poured and the inner wall surface of the bathtub 1 are in contact with each other, the first embodiment 1 Similarly, the installer operates the UP / DOWN key of the cleaning course setting switch 107 of the remote controller R to increase or decrease the set value of the total flow rate of the water amount sensor 83 and the hot water amount sensor 84. Then, the flow rate of the cleaning liquid is changed within a predetermined range according to the operation of changing the flow rate with the cleaning course setting switch 107. Then, it was confirmed that the cleaning liquid was sprayed mainly to the area where the water line and the inner wall surface of the bathtub 1 were in contact with each other when the assumed standard amount of hot water was poured, and the builder When the cleaning / hot water filling switch 104 of the remote controller R is pressed again, the set value is registered in the memory in order to set the changed flow rate as the new set flow rate during the cleaning operation. Further, the on-off valve 55 and the first and second detergent valves 42a and 42b are closed to end the operation of the flow rate setting mode (steps ST26 to ST32). Subsequent operations are the same as those in the first embodiment, and the operations in the cleaning test run mode and the hot water filling test run mode are sequentially executed (steps ST33 to ST37).

According to the bathtub cleaning device, as in the first embodiment, the installer or the like manually operates the remote controller R to control the opening degree of the water amount adjusting valve 85 and the hot water amount adjusting valve 86 to control the flow rate of the cleaning liquid. Since the appropriate set flow rate can be registered in the memory, the cleaning liquid injection position can be changed to an appropriate position for the cleaning operation while checking the cleaning liquid injection position at the installation site of the bathtub cleaning device.

Further, according to the bathtub cleaning device, as in the first embodiment, the injection position of the cleaning liquid is confirmed and changed in the operation in the flow rate setting mode without performing the entire steps of the hot water filling operation and the cleaning operation. Therefore, in a bathtub cleaning device in which the standard amount of hot water to be poured into the bathtub 1 is assumed and the injection position of the cleaning liquid is preset, the usage conditions of the bathtub 1 and the bathtub cleaning device can be used at the installation site of the bathtub cleaning device. The cleaning liquid can be sprayed at an appropriate set flow rate according to the installation environment. If the operation in the cleaning test run mode is continuously executed after the operation in the flow rate setting mode, the change in the set flow rate will not be forgotten, so that the setting can be performed reliably.

Therefore, the bathtub cleaning device of the present embodiment also provides stable cleaning performance even if the installation environment of the bathtub cleaning device is different as well as the usage conditions of the bathtub 1 as in the first embodiment. Equipment can be provided.

(Other embodiments)
(1) In the first embodiment, the flow rate of the cleaning liquid injected from the cleaning nozzle is adjusted by driving and controlling the pump with a preset set value. However, a flow rate sensor is provided to adjust the flow rate of the cleaning liquid. You may.
(2) In all of the above embodiments, the switch of the remote controller is used as the manual flow rate setting unit, but the flow rate may be set by a DIP switch or the like.
(3) In each of the above embodiments, a bathtub cleaning device in which the main body unit and the cleaning liquid generation unit are separated is used, but a bathtub cleaning device in which these are integrated according to the size of the bathroom or the bathtub. May be used.
(4) In each of the above embodiments, as a set flow rate in the cleaning operation, a single area where the water line and the inner wall surface of the bathtub contact when a standard amount of hot water is poured is the cleaning liquid injection position. Although the set flow rate is set, different set flow rates may be set according to the usage conditions of the bathtub, or a plurality of set flow rates may be set in order to inject the cleaning liquid to different injection positions during the cleaning operation. ..
(5) In each of the above embodiments, a bathtub cleaning device provided with a hot water supply pipe for hot water filling is used, but it is a bathtub cleaning device that does not provide a hot water supply pipe for hot water filling and only performs a washing operation. You may.
(6) In all of the above embodiments, the cleaning liquid containing the detergent is sprayed in the operation in the flow rate setting mode, but only hot water may be sprayed to set the set flow rate.
(7) In each of the above embodiments, the test run mode including the operation of the cleaning test run mode and the hot water filling test run mode is executed, but only the operation of the flow rate setting mode may be executed. Further, the operation in the cleaning test run mode may be executed before the operation in the flow rate setting mode. However, it is more preferable to continuously execute the operation in the cleaning test run mode after the operation in the flow rate setting mode because the operation in the cleaning test run mode can be executed at the set flow rate.

1 Bathtub 2 Drain plug 4 Main unit 6 Water heater (heat source machine)
7 Cleaning nozzle 40 Main unit controller 48 Pump 51 Detergent mixing part 85 Water amount adjusting valve 86 Hot water amount adjusting valve R Remote control (manual flow rate setting part)

Claims (3)

A detergent mixing part that mixes the detergent supplied from the detergent tank and the hot water supplied from the heat source machine to generate a cleaning liquid,
A cleaning nozzle that sprays the cleaning liquid generated by the detergent mixing part into the bathtub,
A flow rate adjusting unit that adjusts the flow rate of the cleaning liquid sprayed from the cleaning nozzle to a predetermined set flow rate,
A manual flow rate setting unit that manually sets the set flow rate of the cleaning liquid sprayed from the cleaning nozzle,
A bathtub cleaning device including a storage unit that stores the set flow rate of the cleaning liquid after setting as a new set flow rate when the set flow rate of the cleaning liquid to be ejected from the cleaning nozzle is set by the manual flow rate setting unit. The bathtub cleaning device according to claim 1 is configured to be capable of operating in a flow rate setting mode for setting a set flow rate of a cleaning liquid to be ejected from a cleaning nozzle during a cleaning operation.
A bathtub cleaning device that sets the set flow rate of the cleaning liquid to be sprayed from the cleaning nozzle in the manual flow rate setting unit when operating in the flow rate setting mode. The bathtub cleaning device according to claim 2 is
A bathtub cleaning device configured to be able to perform continuous cleaning test run mode operation before or after operation in flow rate setting mode.

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