JP6857485B2 - Bathtub cleaning device and bathtub cleaning system - Google Patents

Description

The present invention relates to a bathtub cleaning device that mixes hot water supplied from a heat source machine with a cleaning liquid and injects it into the bathtub from a cleaning nozzle provided in the bathtub, and a bathtub cleaning system including the above-mentioned bathtub cleaning device.

Conventionally, in a bathtub cleaning system equipped with a bathtub cleaning device that cleans the inner peripheral surface of the bathtub by mixing hot water supplied from a heat source machine with the cleaning liquid in the cleaning liquid tank and spraying it from a cleaning nozzle provided in the bathtub. , A flow control valve that can adjust the amount of water flowing to the cleaning nozzle per unit time is provided in the hot water outlet that guides the hot water supplied from the heat source machine to the cleaning nozzle, and the hot water supplied from the heat source machine is mixed with the cleaning liquid. It is known that the height of hot water sprayed to the inner peripheral surface of the bathtub can be changed when the washing process of spraying hot water from the washing nozzle is executed or the rinsing step of spraying hot water from the washing nozzle is executed. (See, for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2012-170614 Japanese Unexamined Patent Publication No. 5-329093

By the way, in facilities such as long-term care facilities where baths are used many times a day, there is a demand to shorten the time required for one bathtub cleaning (cleaning time) as much as possible in order to increase the turnover rate of users. .. However, unlike the conventional bathtub cleaning system, the height of hot water sprayed from the cleaning nozzle to the inner peripheral surface of the bathtub is changed up and down so that dirt and unrinsed cleaning liquid do not remain on the inner peripheral surface of the bathtub. However, depending on the number of times the hot water injection height is changed, there is a risk that the cleaning time will become longer. Moreover, in this case, when the rinsing process is completed at the stage where hot water is sprayed onto the upper area of the inner peripheral surface of the bathtub, the hot water after rinsing containing dirt and cleaning liquid remains attached to the lower area of the inner peripheral surface of the bathtub. In this case, it was necessary to inject hot water again toward the lower region of the inner peripheral surface of the bathtub because it may remain.

The present invention has been made in view of the above problems, and an object of the present invention is to have high cleaning performance in a bathtub cleaning device and a bathtub cleaning system that automatically cleans the inside of a bathtub by injecting hot water from a cleaning nozzle. In addition, it is an object of the present invention to provide a bathtub cleaning system having high cleaning efficiency, which can shorten the cleaning time.

INDUSTRIAL APPLICABILITY According to the present invention, a hot water outlet that guides hot water supplied from a heat source machine to a cleaning nozzle of a bathtub, a flow rate adjusting means that can adjust the amount of water flowing from the hot water outlet to the cleaning nozzle per unit time, and a cleaning liquid can be stored. Cleaning liquid tank, cleaning liquid mixing pipeline that guides the cleaning liquid in the cleaning liquid tank to the hot water outlet pipeline, execution means of the cleaning process that mixes the hot water supplied to the hot water outlet pipeline with the cleaning liquid and leads it to the cleaning nozzle, and the hot water outlet pipe. A bathtub cleaning device provided with a means for executing a rinsing step in which hot water supplied to the road is led out to a cleaning nozzle. after injecting the hot water toward the upper area of the peripheral surface has an operation to inject water toward the cleaning nozzle with a predetermined value lower second copies water than the first copies water down zone bathtub peripheral surface When the rinsing step is completed, the hot water is sprayed at the second water flow rate, and then the spraying of the hot water to the inner peripheral surface of the bathtub is stopped .

In this product, in the rinsing process, hot water is sprayed from the cleaning nozzle toward the upper area of the inner peripheral surface of the bathtub, and then hot water is sprayed toward the lower area of the inner peripheral surface of the bathtub, that is, the inner peripheral surface of the bathtub. Since the height of hot water sprayed from the washing nozzle is changed from the upper side to the lower side, the hot water can flow down substantially along the entire inner peripheral surface of the bathtub. Therefore, dirt and unrinsed cleaning liquid are unlikely to occur on the inner peripheral surface of the bathtub. Further, by changing the jet height of the hot water from the upper side to the lower side as described above, it is difficult for the hot water after rinsing containing dirt and cleaning liquid to adhere and remain on the inner peripheral surface of the bathtub. It is also possible to shorten the time, and the inner peripheral surface of the bathtub can be cleaned efficiently.

Preferably, in the rinsing step, the water flow amount is set to the first water flow amount and hot water is sprayed from the washing nozzle, then the water flow amount is set to the second water flow amount and hot water is sprayed from the washing nozzle, and further, hot water is sprayed from the washing nozzle. The cycle is repeated a plurality of times, with a series of operations of stopping the operation for a predetermined time as one cycle.

The bubbles of the cleaning liquid adhering to the inner peripheral surface of the bathtub and the bottom surface of the bathtub during the cleaning process have strong adhesive force, and it takes time to be completely discharged from the drain port. Moreover, if a certain amount of hot water is continuously sprayed on the inner peripheral surface of the bathtub by the rinsing process while the bubbles of the cleaning liquid remain in the drain port and its surroundings, the bubbles of the cleaning liquid constantly flow into the drain port. It takes more time for the water to be discharged due to the rinsing water hindering the discharge and overflowing from the drain. However, according to the present invention, in the rinsing step, after changing the injection height of hot water from above to downward, a series of operations of stopping the injection of hot water for a predetermined time is repeated a plurality of times, so that the inner peripheral surface of the bathtub Dirt, cleaning liquid, and foam of cleaning liquid that have been rinsed off from the body are smoothly discharged from the drain port, and it is difficult for them to stay in or around the drain port. Therefore, the time required for the rinsing process can be shortened accordingly, and the inside of the bathtub can be washed efficiently. Further, since the inner peripheral surface of the bathtub is rinsed again after the dirt, the cleaning liquid, and the bubbles of the cleaning liquid are discharged from the drain port, it is more unlikely that dirt, the cleaning liquid, and the unrinsed residue of the cleaning liquid are left in the bathtub.

Further, the present invention includes a bath tub cleaning device, a tub washing system consisting of bathtubs and, a heat source unit for supplying hot water to the bathtub cleaning apparatus or bath, bathtub cleaning device is supplied from the heat source equipment A hot water outlet that guides hot water to the cleaning nozzle of the bathtub, a flow rate adjusting means that can adjust the amount of water flowing from the hot water outlet to the cleaning nozzle per unit time, a cleaning liquid tank that can store cleaning liquid, and a cleaning liquid in the cleaning liquid tank. A cleaning liquid mixing pipeline that leads the hot water to the hot water outlet, a means for executing the cleaning process that mixes the hot water supplied to the hot water pipeline with the cleaning liquid and leads it to the cleaning nozzle, and a hot water supplied to the hot water pipeline to the cleaning nozzle. The rinsing step is provided with means for executing the rinsing step to be derived, and in the rinsing step, the water flow amount is set to a predetermined first water flow amount, and hot water is sprayed from the cleaning nozzle toward the upper area of the inner peripheral surface of the bathtub, and then the first. The bathtub has an operation of injecting hot water from the cleaning nozzle toward the lower area of the inner peripheral surface of the bathtub with a second water flow amount lower than one water flow amount, and the bathtub uses the hot water supplied from the bathtub cleaning device to the inner circumference of the bathtub. A cleaning nozzle that can inject toward the surface and a pouring port that can lead hot water supplied from the heat source machine into the bathtub at a flow rate larger than the injection flow rate of the cleaning nozzle are provided, and the rinsing process is being executed or executed. Later, a predetermined amount of hot water supplied from the heat source machine is led out from the pouring port into the bathtub.

In this type of bathtub cleaning system, the amount of hot water (injection flow rate) per unit time that is normally ejected from the cleaning nozzle during the bathtub cleaning operation is led out into the bathtub from the pouring port such as the bathtub fittings and currants during the hot water filling operation. It is less than the amount of hot water per unit time. Therefore, even if the hot water sprayed into the bathtub tries to wash away the dirt and the cleaning liquid on the bottom surface of the bathtub when the rinsing step is executed, there is a possibility that the dirt cannot be reliably discharged depending on the degree of dirt. In particular, when the bottom of the bathtub has irregularities to prevent it from tipping over, the flow of hot water is worse than when the bottom of the bathtub is smooth, and the hot water flows unevenly to a part of the bottom of the bathtub. It tends to remain on the bottom of the bathtub. However, according to the present invention, a large flow rate of hot water is derived from the pouring port into the bathtub from the injection flow rate of the cleaning nozzle during or after the rinsing step, and the bathtub is provided with dirt and cleaning liquid adhering to the bottom surface of the bathtub. Since it can be discharged from the drain port, it is more unlikely that dirt, cleaning liquid, foam of cleaning liquid, etc. will remain in the bathtub. Therefore, the inner peripheral surface of the bathtub can be cleaned more efficiently.

As described above, according to the present invention, it is possible to provide a bathtub cleaning device and a bathtub cleaning system with high cleaning efficiency, which are less likely to cause stains and unrinsed cleaning liquid in the bathtub and can shorten the cleaning time. ..

FIG. 1 is a schematic configuration diagram of a bathtub cleaning system including a bathtub cleaning device according to an embodiment of the present invention. FIG. 2 is an operation flowchart (1) of a bathtub cleaning system including the bathtub cleaning device according to the embodiment of the present invention. FIG. 3 is an operation flowchart (2) of a bathtub cleaning system including the bathtub cleaning device according to the embodiment of the present invention. FIG. 4 is an operation flowchart (3) of a bathtub cleaning system including the bathtub cleaning device according to the embodiment of the present invention. FIG. 5 is a schematic configuration diagram of a bathtub cleaning system including a bathtub cleaning device according to another embodiment of the present invention.

Next, the above-described embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the bathtub cleaning system 1 configured by using the bathtub cleaning device 4 according to the embodiment of the present invention heats the bathtub 2, the bath water in the bathtub 2, and the water supplied from the water supply. A water heater 3 as a heat source machine for generating hot water, a bathtub cleaning device 4 that mixes hot water generated by heating in the water heater 3 with a cleaning liquid and supplies it to a cleaning nozzle 25 of a bathtub 2, a bathtub cleaning device 3 and a bathtub cleaning It is composed of an operation terminal 5 for setting and instructing the operation of the device 4.

The inner peripheral surface of the bathtub 2 (hereinafter referred to as "inner peripheral surface of the bathtub") 21 is provided with a bathtub fitting 23 serving as a pouring port for circulating bath water in the bathtub 2 with the water heater 3. ing. At the bottom of the bathtub 2, a drain port 20 is provided for discharging the bath water in the bathtub 2 and the hot water sprayed into the bathtub 2 during the bathtub washing operation to the outside. The drain port 20 is provided with a drain plug 24 capable of automatically closing the drain port 20. A cleaning nozzle 25 for injecting hot water supplied from the bathtub cleaning device 4 toward the inner peripheral surface 21 of the bathtub is provided on the inner bottom surface (hereinafter, referred to as “bottom surface of the bathtub”) 22 of the bathtub 2.

The bathtub fitting 23 is connected to the heat exchanger 32B for reheating the water heater 3 via the return pipe 13 and the forward pipe 14. Although not shown, the bathtub fitting 23 has a suction port for introducing the bath water in the bathtub 2 into the water heater 3 through the return pipe 13, and a pipe for going to and from the bath water in the bathtub 2 and the hot water heated by the water heater 3. It is provided with an air outlet that leads out into the bathtub 2 through 14. The outlet is formed to have a size that allows hot water to be drawn out at a flow rate larger than the amount of hot water (injection flow rate) per unit time that can be injected from the cleaning nozzle 25.

In the present embodiment, the bathtub 2 is configured to supply hot water having a flow rate larger than the injection flow rate into the bathtub 2 through the bathtub fitting 23 during the bottom cleaning step and the hot water filling operation described later. The bathtub fitting 23 may not be provided in the bathtub, and may be configured to supply hot water having a flow rate larger than the injection flow rate into the bathtub 2 through a curan (pouring port portion) provided in the vicinity of the bathtub 2. ..

The drain plug 24 is connected to a valve drive unit (not shown), and is configured to automatically open and close in response to an instruction from the cleaning control circuit 4C incorporated in the bathtub cleaning device 4. In this way, by configuring the bathtub cleaning system 1 using the bathtub 2 provided with the drain plug 24 that can be automatically opened and closed, the hot water filling operation is continuously automatically executed after the bathtub cleaning operation is completed. can do. The drain plug 24 may be configured to automatically open and close in response to an instruction from the hot water supply control circuit 3C incorporated in the water heater 3, or does not have an automatic opening / closing function and is manually opened / closed. It may be configured to open and close.

The cleaning nozzle 25 is connected to the hot water outlet pipe 41 of the bathtub cleaning device 4 via the cleaning pipe 15. Although not shown, the cleaning nozzle 25 includes an injection port that radially injects hot water supplied from the bathtub cleaning device 4 through the cleaning pipe 15 over the entire circumference of the inner peripheral surface 21 of the bathtub. The injection port injects hot water from the bathtub cleaning device 4 toward the upper area of the bathtub inner peripheral surface 21 as the amount of water flowing (flow rate) per unit time increases from the bathtub cleaning device 4 to the cleaning pipe 15, that is, the cleaning nozzle 25. As the amount decreases, hot water is sprayed toward the lower region of the inner peripheral surface 21 of the bathtub.

The water heater 3 includes a burner for hot water supply (hereinafter referred to as “hot water supply burner”) 31A and a burner for reheating (hereinafter referred to as “reheating burner”) 31B which can be individually extinguished. Further, the water heater 3 is a heat exchanger for hot water supply (hereinafter, "hot water heat exchanger") that recovers the combustion heat of the gas released from the hot water supply burner 31A and heats the water supplied from the water supply through the water supply pipe 11. A heat exchanger for reheating (hereinafter referred to as "reheating heat") that recovers the combustion heat of the gas released from the reheating burner 31B and the reheating burner 31B and heats the bath water supplied from the bathtub 2 through the return pipe 13. It is equipped with a 32B (called a "exchanger").

The water inlet of the hot water supply heat exchanger 32A is connected to the water supply pipe 11 via the water inlet pipe 33A for hot water supply. On the other hand, the hot water outlet of the hot water supply heat exchanger 32A is connected to the hot water supply pipe 12 via the water outlet pipe line 34A for hot water supply. The water supply pipe 11 is connected to the water supply, and the hot water supply pipe 12 is connected to the hot water usage destination K such as a curan or a shower.

The water inlet of the reheating heat exchanger 32B is connected to the return pipe 13 via the water inlet pipe 33B for reheating. On the other hand, the hot water outlet of the reheating heat exchanger 32B is connected to the outgoing pipe 14 via the drainage pipe 34B for reheating.

The water inlet pipe 33A for hot water supply has a water supply amount sensor 35 that detects the amount of water flowing from the water supply pipe 11 to the hot water supply heat exchanger 32A, and the water supplied from the water supply pipe 11 to the water inlet pipe 33A is discharged for hot water supply. The divergence valve 36 that diverges into the water pipe 34A is arranged in this order from the upstream side.

A pressure sensor 37 that detects the water level of the bathtub 2 and a circulation pump 38 that circulates the bath water in the bathtub 2 between the reheating heat exchanger 32B are provided in the reheating water inlet line 33B from the upstream side. They are arranged in this order.

The hot water supply drainage pipe 34A branches from the middle portion and is joined and connected to the middle portion of the reheating drainage pipe 34B through the hot water filling bypass pipe 30. The hot water filling bypass pipe 30 is provided with a bypass on-off valve 39 capable of blocking the flow of water from the hot water supply water outlet pipe 34A to the reheating water discharge pipe 34B.

The water heater 3 is provided with hot water such as a hot water supply operation for supplying hot water to the hot water usage destination K and the bathtub cleaning device 4, a hot water filling operation for supplying hot water to the bathtub 2, and a reheating operation for circulating and heating the bath water in the bathtub 2. A hot water supply control circuit 3C that controls the operation of the vessel 3 is incorporated.

The hot water supply control circuit 3C is an operation determination unit that monitors the operation state of the operation terminal 5, a hot water discharge determination unit that monitors whether or not the detected water amount of the water supply amount sensor 35 indicates a predetermined water amount or more, and adjustment of the opening degree of the flow dividing valve 36. The shunt valve control unit that controls the ignition and extinguishing of the hot water supply burner 31A and the reheating burner 31B, the burner control unit that controls the adjustment operation of the combustion amount, the hot water filling control unit that opens and closes the bypass on-off valve 39, and the bypass on-off valve 39. Hot water filling amount determination unit that monitors the integrated value of the detected water amount of the water supply amount sensor 35 when opened (hereinafter referred to as "integrated value of pouring water") La, bath water level determination unit that monitors the detected pressure of the pressure sensor 37, It has a circuit configuration such as a reheating control unit that controls the on / off operation of the circulation pump 38 and a time measuring unit that measures the execution time of the reheating operation.

Further, in the hot water supply control circuit 3C, the reheating switch 52 of the operation terminal 5 and the execution unit of the hot water filling operation for supplying the hot water generated by heating by the hot water supply heat exchanger 32A from the bathtub fitting 23 into the bathtub 2 are turned on. During the bathtub cleaning operation, the execution unit of the reheating operation, which operates the circulation pump 38 until a predetermined time elapses to circulate the bath water in the bathtub 2 with the reheating heat exchanger 32B (here, will be described later). It has a circuit configuration such as an execution unit of a bottom surface cleaning step in which hot water generated by heating by the hot water supply heat exchanger 32A is led out from the bathtub fitting 23 into the bathtub 2 after the execution of the rinsing step operation).

The bathtub cleaning device 4 includes a cleaning liquid tank 40 capable of storing cleaning liquid, a hot water outlet pipe 41 that guides hot water led out from the water heater 3 to the hot water supply pipe 12 to the cleaning pipe 15, and a hot water discharge pipe that drains the cleaning liquid in the cleaning liquid tank 40. A cleaning liquid mixing pipe 42 leading to 41 is provided, and a hot water supply pipe 12 is connected to the upstream end of the hot water outlet pipe 41, and a cleaning pipe 15 is connected to the downstream end.

The upstream end of the cleaning liquid mixing pipeline 42 is connected to the cleaning liquid discharge port of the cleaning liquid tank 40, and the downstream end is merged and connected to the intermediate portion of the hot water discharge pipeline 41. Further, the cleaning liquid mixing pipe 42 is provided with a cleaning liquid on-off valve 43 capable of blocking the outflow of the cleaning liquid from the cleaning liquid tank 40 to the hot water outlet pipe 41.

On the upstream side of the confluence 44 of the cleaning liquid mixing pipe 42 in the hot water outlet pipe 41, a check valve 45 for preventing the backflow of the cleaning liquid and hot water to the upstream side of the hot water discharge pipe 41 and a check valve 45 from the hot water discharge pipe 41 A hot water on-off valve 46 capable of shutting off the supply of hot water to the cleaning pipe 15, a hot water amount sensor 47 for detecting the amount of water flowing from the hot water supply pipe 12 to the hot water pipe 41 per unit time, and the washing pipe 15 from the hot water pipe 41. A flow rate adjusting valve 48 as a flow rate adjusting means capable of adjusting the amount of water flowing (flow rate) per unit time to the pipe is arranged in this order from the downstream side.

The merging portion 44 has a Venturi pipe structure whose diameter is substantially reduced in the center, and the cleaning liquid mixing pipeline 42 is connected to the reduced diameter portion of the merging portion 44. Therefore, in the state where the cleaning liquid on-off valve 43 is opened, the cleaning liquid in the cleaning liquid tank 40 is subjected to the hot water discharge pipe 41 due to the negative pressure when the hot water introduced into the hot water discharge pipe 41 flows through the reduced diameter portion of the confluence portion 44. It is drawn into and mixed with hot water.

The flow rate adjusting valve 48 is configured to adjust the opening degree so that the detected water amount of the hot water amount sensor 47 becomes a predetermined water amount. For example, when it is set to 6 L / min), the opening degree is adjusted so that the detected water amount of the hot water amount sensor 47 becomes the first water flow rate. As a result, hot water is sprayed from the cleaning nozzle 25 toward the upper area of the inner peripheral surface 21 of the bathtub. On the other hand, when the amount of water flowing from the hot water outlet pipe 41 to the cleaning nozzle 25 is set to the second water flow amount (for example, 4 L / min) which is a predetermined value lower than the first water flow amount, the detected water amount of the hot water amount sensor 47 is the second. Adjust the opening so that the amount of water flows. As a result, hot water is sprayed from the cleaning nozzle 25 toward the lower region of the inner peripheral surface 21 of the bathtub. The first water flow amount is set to a value at which hot water can be sprayed at a height at which dirt easily adheres when a standard amount of hot water is stored in the bathtub 2 and used. The hot water may be set to a value at which the hot water can be sprayed at a height at which dirt easily adheres when the maximum set amount of hot water is stored and used.

The bathtub cleaning device 4 incorporates a cleaning control circuit 4C that controls the operation of the bathtub cleaning device 4, such as a bathtub cleaning operation in which hot water generated by heating by the water heater 3 is sprayed into the bathtub 2 from the cleaning nozzle 25. ..

The cleaning control circuit 4C opens and closes an operation determination unit that monitors the operating state of the operation terminal 5, an injection amount control unit that opens and closes the hot water on-off valve 46 and adjusts the opening degree of the flow rate adjusting valve 48, and a cleaning liquid on-off valve 43. Cleaning liquid amount control unit, drainage control unit that opens and closes the drain plug 24, hot water injection time from the cleaning nozzle 25 according to the first water flow rate (hereinafter referred to as "upper injection time") Sa and the cleaning nozzle 25 according to the second water flow rate Time to measure a predetermined standby time Sd such as the time for injecting hot water from the water (hereinafter referred to as "lower injection time") Sb, the time for keeping the drain plug 24 in the open state, and the time for keeping the hot water on-off valve 46 in the closed state. A counting unit that measures Na for the number of times a predetermined injection adjustment operation is executed (hereinafter referred to as "repetition number") during a bath cleaning operation (here, during execution of a cleaning step and a rinsing step described later), the above-mentioned repetition. It has a circuit configuration such as a storage unit that stores the number of times Na.

Further, the cleaning control circuit 4C is an execution unit of a cleaning process in which hot water supplied from the water heater 3 is mixed with the cleaning liquid in the cleaning liquid tank 40 and sprayed from the cleaning nozzle 25 into the bathtub 2, and hot water is supplied before the execution of the cleaning process. A pre-cleaning process execution unit that injects hot water supplied from the vessel 3 into the bathtub 2 from the cleaning nozzle 25, and a rinse that injects hot water supplied from the water dispenser 3 from the cleaning nozzle 25 into the bathtub 2 after the cleaning step is executed. It has a circuit configuration such as a process execution unit.

The operation terminal 5 includes an operation switch 50 of the bathtub cleaning system 1, a hot water filling switch 51 instructing the start of the hot water filling operation, a reheating switch 52 instructing the start of the reheating operation, and a bathtub cleaning instructing the start of the bathtub cleaning operation. Switch 53, adjustment switch 54 for adjusting settings such as hot water supply temperature, hot water filling amount, and number of washings, display unit 55 for displaying set operating conditions such as hot water supply temperature and hot water filling amount, and hot water filling operation A voice output unit 56 for notifying by voice that the bathtub washing operation is completed is provided, and the control circuits (hot water supply control circuit 3C, washing control circuit 4C) of the water heater 3 and the bathtub washing device 4 are wired or wireless. It is connected with. That is, the hot water supply control circuit 3C and the cleaning control circuit 4C are connected by wire or wirelessly via the operation terminal 5.

In the present embodiment, one operation terminal 5 can be configured to set and instruct each operation of the water heater 3 and the bathtub cleaning device 4, but the operation terminal for the water heater 3 and the bathtub cleaning device 4 The operation terminal for the water heater is provided separately, and the setting of the hot water supply temperature and the amount of hot water filling, and the instruction to start the hot water filling operation are operated by the operation terminal for the water heater 3, and the number of washings and the instruction to start the bathtub washing operation are instructed. May be configured to be operated by the operation terminal for the bathtub cleaning device 4.

The control operation during the bathtub cleaning operation by the bathtub cleaning system 1 will be described with reference to the flowcharts of FIGS. 2 to 4. In performing the following bathtub washing operation, when the operation switch 50 is turned on on the operation terminal 5, the main control programs of the hot water supply control circuit 3C and the washing control circuit 4C are activated, and the hot water supply operation and hot water are started. The tensioning operation, reheating operation, bathtub cleaning operation, etc. can be performed.

When the bathtub cleaning switch 53 is turned on, first, the drain plug 24 of the bathtub 2 is opened to discharge the bath water in the bathtub 2 to the outside (ST1 to ST2). Then, when the standby time Sd after opening the drain plug 24 reaches the preset first standby set time D1 (for example, 300 seconds), the display unit 55 of the operation terminal 5 indicates that "bathtub cleaning is started". And output audio from the audio output unit 56 (ST3 to ST4). The first standby set time D1 is arbitrarily selected and set by the user from a plurality of preset reference times (for example, 0 seconds, 300 seconds, 600 seconds), but is set by the hot water filling operation. Assuming the amount of hot water supplied to the bathtub 2, that is, the time required for almost all the bath water of the hot water filling set amount L1 (for example, 100 liters) set and input by the operation terminal 5 to be discharged from the drain port 20. It may be calculated by

When the drainage process shown in the steps from ST2 to ST4 is completed, the hot water outlet opening / closing valve 46 of the bathtub cleaning device 4 is opened, and the opening degree of the flow rate adjusting valve 48 is adjusted so that the detected water amount of the hot water amount sensor 47 becomes the first water flow amount. Adjust (ST5 to ST6). As a result, water flow from the water supply pipe 11 to the hot water supply heat exchanger 32A of the water heater 3 is started.

Then, when the amount of water detected by the water supply amount sensor 35 exceeds the predetermined amount as a result of starting the water flow to the hot water supply heat exchanger 32A, the hot water supply burner 31A is ignited to heat the water introduced into the hot water supply heat exchanger 32A. To start. As a result, the hot water generated by heating in the hot water supply heat exchanger 32A is introduced into the hot water outlet pipe 41 of the bathtub cleaning device 4 through the hot water supply pipe 12, and is ejected from the cleaning nozzle 25 into the bathtub 2. At this time, the opening degree of the flow rate adjusting valve 48 is adjusted so that the amount of water flowing through the cleaning nozzle 25 becomes the first amount of water flowing, so that the hot water injected from the cleaning nozzle 25 is the inner peripheral surface 21 of the bathtub. It is sprayed intensively to the upper region (here, the maximum injection height). As a result, dirt such as hair and dust adhering to the upper area of the inner peripheral surface 21 of the bathtub is washed away, and dirt such as soap and sebum components stuck to the vicinity of the waterline absorbs moisture and becomes soft. Therefore, it becomes easy to wash off in a later washing process.

When the upper injection time Sa reaches the preset first injection set time S1 (for example, 30 seconds) after starting the injection of hot water by the first water flow rate, the detected water amount of the hot water amount sensor 47 is the first flow rate. The opening degree of the flow rate adjusting valve 48 is adjusted so that the amount of second water flow is lower than the amount of water (ST7 to ST8). As a result, the hot water sprayed from the cleaning nozzle 25 is concentratedly sprayed onto the lower region of the inner peripheral surface 21 of the bathtub. As a result, dirt such as hair and dust adhering to the lower area of the inner peripheral surface 21 of the bathtub is washed away, and dirt such as soap and sebum components stuck to the lower area of the inner peripheral surface 21 of the bathtub absorbs moisture. It becomes soft and easy to wash off in the subsequent washing process.

When the lower injection time Sb reaches the preset second injection set time S2 (for example, 30 seconds) after starting the injection of hot water by the second water flow rate, the water flow rate to the cleaning nozzle 25 is again the second. The opening degree of the flow rate adjusting valve 48 is adjusted so as to have one water flow rate (ST9 to ST10). As a result, the hot water sprayed from the cleaning nozzle 25 is sprayed again onto the upper region of the inner peripheral surface 21 of the bathtub.

When the upper injection time Sa reaches the preset third injection set time S3 (for example, 30 seconds) after restarting the injection of hot water according to the first water flow amount, the hot water discharge on-off valve 46 is closed and the cleaning nozzle 25 The water flow to the water is blocked (ST11 to ST12). As a result, the injection of hot water onto the inner peripheral surface 21 of the bathtub is stopped.

The stoppage of hot water injection to the inner peripheral surface 21 of the bathtub is maintained until the standby time Sd after closing the hot water on-off valve 46 reaches the preset second standby set time D2 (for example, 30 seconds) (ST13). ..

When the preliminary cleaning step shown in the steps from ST5 to ST13 is completed, the hot water outlet opening / closing valve 46 of the bathtub cleaning device 4 is opened, and the opening degree of the flow rate adjusting valve 48 is set so that the detected water amount of the hot water amount sensor 47 becomes the first water flow amount. And further open the cleaning liquid on-off valve 43 (ST14 to ST16). As a result, the hot water generated by heating in the hot water supply heat exchanger 32A is introduced into the hot water outlet pipe 41 of the bathtub cleaning device 4 through the hot water supply pipe 12, and is ejected from the cleaning nozzle 25 into the bathtub 2 together with the cleaning liquid in the cleaning liquid tank 40. .. At this time, the opening degree of the flow rate adjusting valve 48 is adjusted so that the amount of water flowing through the cleaning nozzle 25 becomes the first amount of water flowing through the cleaning nozzle 25. The "washing hot water") is sprayed onto the upper area of the inner peripheral surface 21 of the bathtub and flows down to the bottom surface 22 of the bathtub. In addition, a part of the foam becomes bubbles and adheres to the inner peripheral surface 21 of the bathtub and the bottom surface 22 of the bathtub. As a result, dirt such as soap and sebum components stuck to the inner peripheral surface 21 of the bathtub and the bottom surface 22 of the bathtub are floated and washed off.

When the upper injection time Sa reaches the fourth injection set time S4 (for example, 2 seconds) after starting the injection of the cleaning hot water according to the first water flow amount, the hot water discharge on-off valve 46 and the cleaning liquid on-off valve 43 are closed. The water flow to the cleaning nozzle 25 is blocked, and the injection of the cleaning hot water to the inner peripheral surface 21 of the bathtub is stopped (ST17 to ST19).

The injection stop of the washing hot water to the inner peripheral surface 21 of the bathtub is maintained until the standby time Sd after closing the hot water on-off valve 46 reaches the preset third standby set time D3 (for example, 40 seconds) (for example, 40 seconds). ST20). As a result, the dirt adhering to the inner peripheral surface 21 of the bathtub and the bottom surface 22 of the bathtub absorbs moisture, and the cleaning liquid permeates the dirt to lift the dirt from the surface. In the third standby set time D3, the dirt adhering to the inner peripheral surface 21 of the bathtub and the bottom surface 22 of the bathtub sufficiently absorbs moisture and becomes soft, and the cleaning liquid sufficiently permeates the dirt in the subsequent rinsing step. Approximately set assuming the time required for easy rinsing.

When the standby time Sd reaches the third standby set time D3 (Yes in the step of ST20), the series of injection adjustment operations shown in the steps from ST14 to ST20, that is, "the upper area of the inner peripheral surface 21 of the bathtub for cleaning hot water". The injection stored in a storage unit (not shown), assuming that the operation of "stopping the injection of the D3 cleaning hot water for a predetermined time after injecting S4 for a predetermined time toward" was executed once as one injection cycle in the cleaning step. "1" is added and stored in the number of cycle repetitions Na (ST21). Then, when the number of repetitions Na has not reached the reference number N1 (for example, 3) (No in the step of ST22), the cleaning step shown in the steps of ST14 to ST21 is executed again.

As a result of repeating the washing step a plurality of times in this way, when the number of repetitions Na reaches the reference number N1 (Yes in the step of ST22), the number of repetitions Na stored in a storage unit (not shown) is set to "0". Reset and move to the next rinsing process (ST23). The reference number N1 of the number of times of repeating the washing process (number of times of washing) Na can be arbitrarily changed by the user using the operation terminal 5.

In the rinsing step, first, the hot water on-off valve 46 of the bathtub cleaning device 4 is opened, and the opening degree of the flow rate adjusting valve 48 is adjusted so that the detected water amount of the hot water amount sensor 47 becomes the first water flow rate (ST24 to ST25). As a result, hot water is supplied from the hot water supply heat exchanger 32A of the water heater 3 to the cleaning nozzle 25 through the hot water outlet pipe 41 of the bathtub cleaning device 4, and is injected into the bathtub 2. At this time, since the amount of water flowing through the cleaning nozzle 25 is set to the first amount of water flowing, the hot water jetted from the cleaning nozzle 25 is concentratedly sprayed onto the upper area of the inner peripheral surface 21 of the bathtub, and the bottom surface of the bathtub. It flows down to 22. As a result, dirt, cleaning liquid, and bubbles of the cleaning liquid that have adhered and remained on the inner peripheral surface 21 of the bathtub and the bottom surface 22 of the bathtub, particularly the upper area of the inner peripheral surface 21 of the bathtub, are washed away.

When the upper injection time Sa reaches the fifth injection set time S5 (for example, 15 seconds) after starting the injection of hot water by the first water flow rate, the detected water amount of the hot water amount sensor 47 is lower than the first water flow rate. The opening degree of the flow rate adjusting valve 48 is adjusted so as to have two water flow rates (ST26 to ST27). As a result, the hot water sprayed from the cleaning nozzle 25 is concentratedly sprayed onto the lower area of the inner peripheral surface 21 of the bathtub, and in particular, dirt, cleaning solution, and cleaning solution remaining on the lower area of the inner peripheral surface 21 of the bathtub. Foam is washed off.

When the lower injection time Sb reaches the sixth injection set time S6 (for example, 15 seconds) after starting the injection of hot water by the second water flow amount, the hot water discharge on-off valve 46 is closed and the water is passed to the cleaning nozzle 25. Is shut off, and the injection of hot water onto the inner peripheral surface 21 of the bathtub is stopped (ST28 to ST29).

The injection of hot water to the inner peripheral surface 21 of the bathtub is maintained until the waiting time Sd after closing the hot water on-off valve 46 reaches the fourth standby set time D4 (for example, 10 seconds) (ST30). As a result, the hot water sprayed into the bathtub 2 is discharged to the outside together with dirt, cleaning liquid, and bubbles of the cleaning liquid. The fourth standby set time D4 is the amount of hot water jetted into the bathtub 2 by the rinsing step, that is, the amount of hot water to be jetted from the washing nozzle 25 into the bathtub 2 at the first water flow amount at the fifth injection set time S5. 6th injection set time with 2 water flow S6 The total amount of hot water to be injected, and the foam of the cleaning liquid that has strong adhesion to the inner peripheral surface 21 of the bathtub and the bottom surface 22 of the bathtub and is difficult to flow down are almost all the drainage port 20. Approximately set assuming the time required for discharge from.

When the standby time Sd reaches the fourth standby set time D4 (Yes in the step of ST30), a series of injection adjustment operations shown in the steps from ST24 to ST30, that is, "directing hot water toward the upper region of the inner peripheral surface 21 of the bathtub". After injecting S5 for a predetermined time, S6 is injected toward the lower region of the inner peripheral surface 21 of the bathtub for a predetermined time, and then the injection of D4 hot water is stopped for a predetermined time. ”This operation is once as one injection cycle in the rinsing process. Assuming that it has been executed, "1" is additionally stored in the number of repetitions Na of the injection cycle stored in a storage unit (not shown) (ST31).

Then, the bypass on-off valve 39 is opened, and the hot water generated by heating by the hot water supply heat exchanger 32A of the water heater 3 is led out from the bathtub fitting 23 into the bathtub 2, and then the total pouring value La is the predetermined bottom cleaning set amount. When L2 (for example, 10 liters) is reached, the bypass on-off valve 39 is closed, and water flow to the bathtub fitting 23 is stopped until the standby time Sd reaches the fifth standby set time D5 (for example, 15 seconds). Perform the bottom cleaning step to maintain (ST32-ST35). As a result, a large flow rate of hot water is derived from the bathtub fitting 23 into the bathtub 2 from the injection flow rate of the cleaning nozzle 25, and the dirt, the cleaning liquid, and the bubbles of the cleaning liquid that have flowed down to the bottom surface 22 of the bathtub during the cleaning step and the rinsing step are agitated while being raised. And discharge to the outside.

When the number of repetitions Na stored in the storage unit (not shown) does not reach the reference number N2 (for example, 3) when the bottom cleaning step shown in the steps from ST32 to ST35 is completed (No in the step of ST36). , The rinsing step shown in the steps ST24 to ST31 and the bottom cleaning step shown in the steps ST32 to ST35 are performed again. The reference number N2 of the number of times the rinsing process is repeated (the number of times of washing) Na can be arbitrarily changed by the user using the operation terminal 5.

As a result of repeating the rinsing step a plurality of times in this way, when the number of repetitions Na reaches the reference number N2 (Yes in the step of ST36), the number of repetitions Na stored in a storage unit (not shown) is set to "0". At the same time as resetting, "the bathtub washing is completed" is displayed on the display unit 55 of the operation terminal 5 and the voice is output from the voice output unit 56, and the bathtub washing operation is finished (ST37 to ST38).

Although not shown, if the hot water filling operation is set to be automatically executed after the bathtub washing operation is completed, the drain plug 24 is closed and the hot water filling operation is performed after the bathtub washing operation is completed. Is executed and the operation is terminated.

According to the bathtub cleaning device 4, in the rinsing step, hot water is sprayed from the cleaning nozzle 25 toward the upper area of the bathtub inner peripheral surface 21, and then hot water is sprayed toward the lower area of the bathtub inner peripheral surface 21. That is, since the injection height of the hot water from the cleaning nozzle 25 with respect to the inner peripheral surface of the bathtub 21 is changed from the upper side to the lower side, the hot water can flow down substantially the entire area of the inner peripheral surface surface of the bathtub 21. Therefore, dirt, cleaning liquid, and bubbles of the cleaning liquid are unlikely to remain on the inner peripheral surface 21 of the bathtub. Further, by changing the injection height of the hot water with respect to the inner peripheral surface 21 of the bathtub as described above, the hot water after rinsing containing dirt and cleaning liquid is unlikely to adhere and remain on the inner peripheral surface 21 of the bathtub. The time required for the rinsing process can be shortened accordingly. This makes it possible to provide a bathtub cleaning system 1 having high cleaning efficiency and capable of shortening the cleaning time.

Further, by changing the amount of water flowing to the cleaning nozzle 25 during the rinsing process as described above, the amount of hot water consumed can be reduced as compared with the case where the amount of water flowing is set to be constant, which saves water. Also contributes.

Moreover, in this product, in the rinsing step, after changing the injection height of hot water from the cleaning nozzle 25 from above to downward, a series of injection adjustment operations for stopping the injection of hot water from the cleaning nozzle 25 for a predetermined time are performed. Since it is repeated a plurality of times, the dirt, the cleaning liquid, and the bubbles of the cleaning liquid that have been rinsed off from the inner peripheral surface 21 of the bathtub are smoothly discharged from the drain port 20, and it is difficult to stay in the drain port 20 and its surroundings. Therefore, the time required for the rinsing process can be shortened by that amount, and the inside of the bathtub 2 can be efficiently washed. Further, since the inner peripheral surface 21 of the bathtub is rinsed again after the dirt, the cleaning liquid, and the bubbles of the cleaning liquid are discharged from the drain port 20, it is more unlikely that the dirt, the cleaning liquid, and the bubbles of the cleaning liquid are left unrinsed in the bathtub 2. .. Thereby, the bathtub cleaning system 1 having more excellent cleaning efficiency can be provided.

Further, in this case, after the rinsing step is executed, hot water having a flow rate larger than the injection flow rate of the cleaning nozzle 25 is led out from the bathtub fitting 23 into the bathtub 2, and together with the dirt remaining on the bottom surface 22 of the bathtub, the cleaning liquid, and bubbles of the cleaning liquid. Since it can be discharged from the drain port 20 of the bathtub 2, dirt, cleaning liquid, and bubbles of the cleaning liquid are unlikely to remain in the bathtub 2 even if the bottom surface 22 of the bathtub is formed with irregularities for preventing tipping over. Thereby, the bathtub cleaning system 1 having more excellent cleaning efficiency can be provided.

In the above embodiment, the bottom cleaning step of drawing hot water from the bathtub metal fittings 23 into the bathtub 2 to clean the bathtub bottom surface 22 is performed every time one injection cycle of the rinsing step is completed. However, it may be configured to be executed when the injection cycle is repeated a predetermined number of times, or may be configured to be executed during the execution of the injection cycle. Further, the bottom surface cleaning step may be performed after or during the execution of each step of the pre-cleaning step, the cleaning step, and the rinsing step, or during or during each operation of the pre-cleaning step and the rinsing step. It may be configured to be performed after the execution, or may be configured to be performed during or after each operation of the cleaning step and the rinsing step.

Further, it may be configured so that only the preliminary cleaning step, the cleaning step, and the rinsing step are executed without executing the bottom surface cleaning step. In this case, the cleaning of the bathtub 2 can be completed in a shorter time because the bottom surface cleaning step is not executed.

In the above embodiment, as the injection adjusting operation of the cleaning step, "after injecting the cleaning hot water toward the upper region of the inner peripheral surface 21 of the bathtub for a predetermined time, the injection of the cleaning hot water is stopped for a predetermined time". In the cleaning process, as in the case of the injection adjustment operation in the rinsing process, "after injecting the cleaning hot water toward the upper area of the inner peripheral surface of the bathtub for a predetermined time, the inner peripheral surface of the bathtub 21 It may be configured to "inject the cleaning hot water toward the lower region for a predetermined time and stop the injection of the cleaning hot water for a predetermined time", or "the cleaning hot water is sprayed on the inner circumference of the bathtub" as in the injection adjustment operation in the preliminary cleaning step. After injecting into the upper area of the surface 21 for a predetermined time, injecting into the lower area of the inner peripheral surface 21 of the bathtub for a predetermined time, and then injecting again toward the upper area of the inner peripheral surface 21 of the bathtub for a predetermined time, It may be configured to "stop the injection of the washing hot water for a predetermined time".

The height of hot water sprayed toward the inner peripheral surface of the bathtub 21 during the bathtub washing operation (here, the pre-washing step and the rinsing step) is configured to be changed in two steps, upper and lower. However, it may be configured to be changed in three or more steps.

In the present invention, as in the bathtub cleaning system 1E shown in FIG. 5, the bathtub cleaning device 4E is provided with a hot water filling function, and the bottom cleaning step and the hot water filling operation can be performed by the cleaning hot water filling control circuit 7C of the bathtub cleaning device 4E. It can also be applied to anything that is configured to run.

More specifically, as shown in FIG. 5, the water heater 3E does not have a reheating function for heating and circulating the bath water in the bath water 2, and heats the water supplied from the water supply to generate hot water. It is a heat source machine having only a hot water supply function for supplying hot water to the hot water usage destination K and the bath water cleaning device 4E, and includes a hot water supply burner 31, a hot water supply heat exchanger 32, and a hot water supply control circuit 6C. Further, the water inlet of the hot water supply heat exchanger 32 is connected to the water supply pipe 11 via the water inlet pipe 33, and the hot water outlet of the hot water supply heat exchanger 32 is connected to the hot water supply pipe 12 via the water outlet pipe 34. There is.

Similar to the hot water supply control circuit 3C of the above-described embodiment, the hot water supply control circuit 6C is a burner control unit that controls ignition and fire extinguishing of the operation determination unit, the hot water discharge determination unit, the distribution valve control unit, and the hot water supply burner 31 and the adjustment operation of the combustion amount. It has a circuit configuration such as.

Like the bathtub cleaning device 4 of the above embodiment, the bathtub cleaning device 4E includes a cleaning liquid tank 40, a hot water discharge pipe 41, and a cleaning liquid mixing pipe 42, and a hot water supply pipe is provided at the upstream end of the hot water pipe 41. 12 is connected, and the cleaning pipe 15 is connected to the downstream end. Further, the bathtub cleaning device 4E is provided with a hot water filling branch pipe 71 that guides the hot water supplied from the water heater 3E to the hot water discharge pipe 41 to the hot water filling pipe 17.

The hot water filling branch pipe 71 branches from the middle portion of the hot water discharge pipe 41 and extends, and the hot water filling pipe 17 is connected to the downstream end. The downstream end of the hot water filling pipe 17 is connected to the bathtub fitting 27, and the bathtub fitting 27 supplies the hot water generated by heating by the water heater 3E during the bottom cleaning process and the hot water filling operation into the bathtub 2. It becomes the sprue part. Although not shown, the bathtub fitting 27 is provided only with an outlet for leading the hot water led out from the cleaning unit 4E into the bathtub 2 through the hot water filling pipe 17. The outlet is formed to have a size that allows hot water to be drawn out at a flow rate larger than the injection flow rate of the cleaning nozzle 25.

The hot water filling pipe 17 is connected to a curan (pouring port portion) (not shown) provided in the vicinity of the bathtub 2, and is used to flow into the bathtub 2 through the curan during the bottom cleaning process or the hot water filling operation. It may be configured to supply a large flow rate of hot water.

The hot water supplied from the hot water supply pipe 12 to the hot water supply pipe 41 can be led out by switching between the cleaning pipe 15 side and the hot water filling pipe 17 side at the branch portion 77 of the hot water supply pipe 41 to the hot water filling branch pipe 71. A washing hot water filling switching valve 72 is provided.

The cleaning hot water filling control circuit 7C is the same as the cleaning control circuit 4C of the above-described embodiment, in the operation determination unit, the injection amount adjusting unit, the cleaning liquid amount adjusting unit, the drainage control unit, the timing unit, the counting unit, the storage unit, and the cleaning process. It has a circuit configuration such as an execution unit, an execution unit for a preliminary cleaning process, and an execution unit for a rinsing process. Further, the washing hot water filling control circuit 7C is a bottom washing step in which hot water generated by heating by the hot water supply heat exchanger 32 is led out from the bathtub fitting 27 into the bathtub 2 during the bathtub washing operation (here, after the rinsing step is executed). It has an execution part of.

Further, the washing hot water filling control circuit 7C is an operation switching control unit that switches the flow path of the washing hot water filling switching valve 72, and the amount of hot water derived to the hot water filling pipe 17 based on the integrated value of the detected flow rate of the hot water amount sensor 47. It has a circuit configuration such as a hot water filling amount determination unit for determining (hot water filling amount), a hot water filling operation execution unit for supplying a predetermined amount of hot water heated by the water heater 3E to the bathtub 2 and storing bath water. ..

For other parts having the same function and structure as the bathtub cleaning system 1 described above, the same reference numerals are used (see FIGS. 1 and 5), and the description thereof will be omitted.

In the preliminary cleaning step, the cleaning step, and the rinsing step in the bathtub cleaning system 1E, the cleaning hot water filling switching valve 72 is switched to the "cleaning pipe 15 side", and then the hot water opening / closing valve 46 is opened (during the cleaning process, further. Open the cleaning liquid on-off valve 43). As a result, water flow from the water heater 3E to the cleaning nozzle 25 is started, and as in the above embodiment, the hot water sprayed from the cleaning nozzle 25 (further cleaning liquid during the cleaning process) causes the bathtub inner peripheral surface 21 and the bathtub to be flushed. The bottom surface 22 of the bathtub is washed. On the other hand, in the bottom cleaning step, the cleaning hot water filling switching valve 72 is switched to the "hot water filling pipe 17 side", and then the hot water opening / closing valve 46 is opened. As a result, water flow from the water heater 3E to the bathtub fitting 27 is started, and the bathtub bottom surface 22 is washed with hot water having a flow rate larger than the injection flow rate of the washing nozzle 25 derived from the bathtub fitting 27, as in the above embodiment. To. As a result, the same action and effect as those of the above-described embodiment can be obtained.

1 Bathtub cleaning system 2 Bathtub 21 Bathtub inner peripheral surface 22 Bathtub bottom surface 23 Bathtub metal fittings (bathtub spout)
24 Drain plug 25 Cleaning nozzle 3 Water heater (heat source machine)
4 Bathtub cleaning device 40 Cleaning liquid tank 41 Hot water outlet line 42 Cleaning liquid mixing line 43 Cleaning liquid on-off valve 46 Flow rate adjusting valve (flow rate adjusting means)

Claims (3)

A hot water outlet that guides the hot water supplied from the heat source machine to the cleaning nozzle of the bathtub, a flow rate adjusting means that can adjust the amount of water flowing from the hot water outlet to the cleaning nozzle per unit time, and a cleaning liquid tank that can store the cleaning liquid. , A cleaning liquid mixing pipeline that guides the cleaning liquid in the cleaning liquid tank to the hot water outlet pipeline, a means for executing the cleaning process that mixes the hot water supplied to the hot water outlet pipeline with the cleaning liquid and leads it to the cleaning nozzle, and is supplied to the hot water outlet pipeline. A bathtub cleaning device equipped with a means for executing a rinsing process for leading out hot water to a cleaning nozzle.
In the rinsing step, the water flow amount is set to a predetermined first water flow amount, hot water is sprayed from the cleaning nozzle toward the upper area of the inner peripheral surface of the bathtub, and then the second water flow amount is set to a predetermined value lower than the first water flow amount. It has the operation of injecting hot water from the cleaning nozzle toward the lower area of the inner peripheral surface of the bathtub.
A bathtub cleaning device characterized in that when the rinsing process is completed, hot water is sprayed at the second water flow rate and then the spraying of hot water to the inner peripheral surface of the bathtub is stopped. In the bathtub cleaning device according to claim 1,
In the rinsing step, the water flow amount is set to the first water flow amount and hot water is sprayed from the washing nozzle, then the second water flow amount is set and hot water is sprayed from the washing nozzle, and then the hot water is sprayed from the washing nozzle for a predetermined time. A bathtub cleaning device, wherein a series of operations for stopping is set as one cycle, and the cycle is repeated a plurality of times. And the bath tank cleaning apparatus and tubs, a tub cleaning system composed of a heat source unit for supplying hot water to the bathtub cleaning apparatus or bath,
The bathtub cleaning device stores a hot water outlet that guides the hot water supplied from the heat source machine to the cleaning nozzle of the bathtub, a flow rate adjusting means that can adjust the amount of water flowing from the hot water outlet to the cleaning nozzle per unit time, and a cleaning liquid. A possible cleaning liquid tank, a cleaning liquid mixing pipeline that guides the cleaning liquid in the cleaning liquid tank to the hot water outlet pipeline, a means for executing the cleaning process that mixes the hot water supplied to the hot water outlet pipeline with the cleaning liquid and leads it to the cleaning nozzle, and hot water discharge. It is provided with a means for executing a rinsing step in which hot water supplied to the pipeline is led out to a washing nozzle, and in the rinsing step, the water flow amount is set to a predetermined first water flow amount and the upper area from the washing nozzle to the inner peripheral surface of the bathtub. After injecting hot water toward the bathtub, the second water flow amount is set to a predetermined value lower than the first water flow amount, and the hot water is sprayed from the cleaning nozzle toward the lower region of the inner peripheral surface of the bathtub.
The bathtub has a cleaning nozzle that can inject hot water supplied from the bathtub cleaning device toward the inner peripheral surface of the bathtub, and hot water supplied from the heat source machine can be led out into the bathtub at a flow rate larger than the injection flow rate of the cleaning nozzle. Equipped with a spout part
A bathtub cleaning system characterized in that a predetermined amount of hot water supplied from a heat source machine is led out from a pouring port into a bathtub during or after the rinsing process is being executed.

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