JP2022035575A - Bathtub washing device - Google Patents

Abstract

To provide a bathtub washing device provided with a buffer plate for suppressing shaking of the water surface by hot water supplied to a hot water storage part for storing hot water for washing.SOLUTION: A bathtub washing device (10) includes a storage tank (22) provided in the middle of a hot water passage for supplying hot water to a washing nozzle (5), which can store the hot water supplied from the hot water passage and a pump (28) capable of sending the hot water in the storage tank (22) to the washing nozzle (5). The storage tank (22) includes a water supply port (36) into which the hot water from the upstream flows, a water discharge port (38) for discharging the hot water to be supplied to the pump (28), a water level detection meter (22a) for detecting a water level of the hot water stored inside, and a buffer plate (37) for suppressing shaking of the water surface by the hot water that flows in from the water supply port (36). The buffer plate (37) includes a vertical plate (37a) extending vertically between the water supply port (36) and the water level detection meter (22a), and a horizontal plate (37b) positioned below the water supply port (36).SELECTED DRAWING: Figure 3

Description

The present invention relates to a bathtub cleaning device, and relates to a bathtub cleaning device provided with a buffer plate that suppresses shaking of the water surface due to hot water supplied to a hot water storage unit that stores hot water for cleaning.

As a bathtub cleaning device, tap water from a tap water source is stored in a storage tank, and the water in this storage tank is pressurized by a pump and sprayed together with detergent from the injection nozzle on the bathtub side to the inner surface of the bathtub to inject the inner surface of the bathtub. A cleaning method is known.

For example, in the bathtub cleaning device described in Patent Document 1, tap water from a tap water source is stored in an open-air tank, the water in the open-air tank is pressurized by a pump, and the bathtub is charged with detergent from an injection pipe on the bathtub side. The inner surface of the bathtub is cleaned by spraying it on the inner surface.

In the bathtub cleaning device described in Patent Document 2, tap water from a clean water source is stored in a detergent mixing tank to which detergent is supplied, and the detergent mixed water in this detergent mixing tank is pressurized by a pump to inject the bottom of the bathtub. The inner surface of the bathtub is cleaned by spraying from the nozzle to the inner surface of the bathtub.

An inclined groove with an inclined bottom surface is formed at the bottom of the detergent mixing tank of this bathtub cleaning device, and the water supplied to the detergent mixing tank is dropped onto the inclined bottom surface of the inclined groove to slow down the water, and the water and the detergent are used. It is configured to prevent air from entering when mixed with.

However, recently, a bathtub cleaning device that does not wash directly with tap water but uses hot water supplied from a hot water supply device and a detergent has also been adopted.
For example, in the bathtub cleaning device described in Patent Document 3, a cleaning pipe and a pump are provided to store hot water supplied from a water heater in a hot water tank and supply the hot water to a cleaning nozzle provided at the bottom of the bathtub. A detergent tank is installed near the cleaning pipe to enable the detergent in the detergent tank to be supplied to the cleaning pipe. The hot water is pumped to the washing nozzle to wash the inner surface of the bathtub.

Jitsufuku No. 4-406632 Gazette Japanese Unexamined Patent Publication No. 2020-69383 Japanese Unexamined Patent Publication No. 2019-58643

Since the device of Patent Document 2 prevents air from being mixed when water and detergent are mixed, it cannot be applied to a hot water storage unit that stores only hot water.

When a hot water storage unit for storing only hot water water is provided without mixing detergent as in the bathtub cleaning device of Patent Document 3, and hot water water from a water heater is stored in the hot water storage unit via an electromagnetic on-off valve, hot water water is stored. When the flow velocity is high and the water surface sways violently in the hot water storage unit, there is a problem that the detection accuracy of the water level detection by the water level detecting means deteriorates.

In particular, in the case of a water heater in which the water pressure of the hot water discharged from the water heater fluctuates according to the water pressure of the water source, when the water pressure of the water source is high, the flow velocity of the hot water filled in the hot water storage section increases, so that the water surface The shaking becomes intense.

In addition, if the water level of the hot water storage section is low and the water surface shakes violently, the pump that sends hot water from the hot water storage section to the cleaning nozzle sucks air, and this air biting may reduce the cleaning capacity. There is also.

An object of the present invention is to provide a bathtub cleaning device provided with a buffer plate that suppresses shaking of the water surface due to hot water supplied to a hot water storage unit that stores hot water for cleaning.

The bathtub cleaning device according to claim 1 is provided in the middle of a hot water passage for supplying hot water to a cleaning nozzle and can store hot water supplied from the hot water passage, and sends hot water from this hot water storage unit to the cleaning nozzle. In a bathtub cleaning device equipped with a pump that can supply water, the hot water storage unit has a water supply port into which hot water from the upstream flows, a discharge port for discharging hot water to be sent to the pump, and a water level of hot water stored inside. The water level detecting means for detecting and a buffer plate for suppressing the shaking of the water surface due to the hot water flowing from the water supply port are provided, and the buffer plate includes a vertical plate extending vertically between the water supply port and the water level detecting means and the above-mentioned. It is characterized by having a horizontal plate located below the water supply port.

According to the above configuration, the hot water storage unit includes a water supply port, a discharge port, a water level detecting means, and a buffer plate, and the water level detecting means is used to suppress the shaking of the water surface due to the hot water flowing in from the water supply port by the buffer plate. The detection accuracy of is not reduced.

Since the shock absorber has a vertical plate extending vertically between the water supply port and the water level detecting means, it is possible to effectively prevent hot water falling from the water supply port from scattering toward the water level detecting means.
Moreover, since the shock absorber has a horizontal plate located below the water supply port, the horizontal plate catches and buffers the hot water falling from the water supply port, and effectively suppresses the shaking of the water surface due to the hot water flowing in from the water supply port. can do.

The bathtub cleaning device according to claim 2 is characterized in that, in the invention of claim 1, the discharge port is located closer to the water level detecting means than the vertical plate of the shock absorber.
According to the above configuration, since the vertical plate exists between the water supply port and the discharge port, the water falling from the water supply port suppresses the shaking of the water surface in the vicinity of the discharge port, so that the air bites in the pump. Can be prevented.

In the invention of claim 1 or 2, the bathtub cleaning device according to claim 3 is provided with an electromagnetic on-off valve in the hot water passage to which hot water is supplied to the hot water storage section, and above the electromagnetic on-off valve and the hot water storage section. A flow path forming case body formed in a flat box shape is provided so as to straddle the buffer plate, and the cushioning plate is fixed to the flow path forming case body.
According to the above configuration, since the cushioning plate is fixed to the flow path forming case body that straddles the electromagnetic on-off valve and the hot water storage portion, the fixing structure for fixing the cushioning plate becomes simple. ..

As described above, the present invention has various effects.

It is a block diagram of the hot water supply device, the bathtub, the bathtub cleaning device and the like which concerns on embodiment of this invention. It is sectional drawing of a cleaning unit. It is a bottom view of the flow path formation case body. It is a vertical sectional view (the IV-IV line sectional view of FIG. 3) of the flow path formation case body. FIG. 3 is a sectional view taken along line VV of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
As shown in FIG. 1, a hot water supply device 2 for filling and reheating the bathtub 1 is connected to the bathtub 1 via a hot water filling reheating pipe 3, and the pipe 3 is connected to the circulation adapter 1a of the bathtub 1. Has been done. Further, at the bottom of the bathtub 1, there is a drain plug 4 for automatically draining hot water, which is operated by the operation unit 4a, and a washing nozzle for spraying detergent and hot water to wash the bathtub 1. 5 is arranged. The bathtub 1 is covered with a lid (not shown).

In the vicinity of the bathtub 1, a cleaning unit 6 for supplying detergent and hot water to the cleaning nozzle 5 and a detergent tank 7 for storing the detergent are arranged. The bathtub cleaning device 10 has a supply unit 6, a detergent tank 7, and a cleaning nozzle 5, and is configured by connecting these with a plurality of pipes.

The cleaning unit 6 is connected to a detergent pipe 7a for supplying detergent from the detergent tank 7 and a hot water supply pipe 2a for supplying hot water from the hot water supply device 2. The detergent tank 7 is provided with a level sensor 7b, and the detection signal thereof is supplied to the power communication unit 8. Further, for example, the power communication unit 8 and the cleaning unit 6 arranged on the ceiling of the bathroom are connected to the internal equipment of the cleaning unit 6 by a signal line or the like.
It is connected.

The hot water supply device 2 is a combustion type hot water supply device that receives clean water W and supplies hot water heated by utilizing the combustion heat of fuel, for example, but may be a hot water supply device having a heat pump type heat source machine or the like. A bathroom remote controller 11 and a kitchen remote controller 12 for performing a hot water filling operation, a reheating operation start operation, a hot water supply set temperature setting operation, and the like are connected to the hot water supply device 2 so as to be communicable. Further, a cleaning remote controller 13 for performing a cleaning operation start operation by the bathtub cleaning device 10 is connected to the control unit 21 of the power communication unit 8.

The hot water supply device 2 and the power communication unit 8 are connected by a cord 8b that bundles a power cord for power supply and a communication cord, and the cleaning remote controller 13 is a bathtub cleaning device 10 via the hot water supply device 2 and the power communication unit 8. Can communicate with. Further, the kitchen remote controller 12 and the bathroom remote controller 11 can also communicate with the bathtub cleaning device 10. The kitchen remote controller 12 has a touch-operable display unit 12a and an audio output unit 12b. The cleaning remote controller 13 has a two-digit number display unit 13a and an audio output unit 13b.

The kitchen remote controller 12 and the cleaning remote controller 13 are operation terminals for starting the cleaning operation by the bathtub cleaning device 10. The bathroom remote controller 11 can also be used to start the cleaning operation by the bathtub cleaning device 10.

The cleaning unit 6 of the bathtub cleaning device 10 corresponds to a storage tank 22 (hot water storage unit) for storing hot water and a hot water supply pipe 23 (corresponding to a part of a hot water passage) connected to the hot water supply pipe 2a and supplying hot water to the storage tank 22. The hot water supply pipe 23 having the two branch passages 23a and 23b and the merging passage 23c (the downstream end is connected to the storage tank 22) where the branch passages 23a merge, and the hot water supply pipe. The filter 24 interposed in the 23, the electromagnetic on-off valve 25a and the constant flow valve 26a interposed in one branch passage 23a in order from the upstream side, and the electromagnetic waves interposed in the other branch passage 23b in order from the upstream side. It has an on-off valve 25b and a constant flow valve 26b.

The storage tank 22 is provided with a float-type water level detector 22a capable of detecting a low water level and a high water level, and the detection signal is supplied to the control unit 21. An overflow pipe 22b (see FIG. 1) extending from the storage tank 22 is also provided. An electrode type water level detector may be used instead of the water level detector 22a.

Further, the cleaning unit 6 includes a discharge pipe 27 (corresponding to a part of the hot water passage) extending from the storage tank 22 to the cleaning noble 5, and a pump 28 and a thermista 29 interposed in the discharge pipe 27 in order from the upstream side. It has two check valves 30, a flow sensor 31, and a venturi 32 to which a detergent supply pipe 7a is connected. An electromagnetic on-off valve 7c is interposed in the detergent supply pipe 7a extending from the detergent tank 7.

The control unit 21 includes, for example, a microcomputer having a calculation unit, a storage unit, an input / output unit, and a clock circuit, and is a device related to cleaning operation and a drain plug 4 based on a control program and the like stored in the storage unit. To control. In the cleaning operation, the control unit 21 opens the drain plug 4, controls the opening / closing of the electromagnetic on-off valves 25a, 25b, 7c of the hot water supply pipe 23 and the detergent supply pipe 7a, the drive of the pump 28, and the like, and also performs the cleaning operation. The washing operation history including the start time or the end time, the washing course, the number of washing operations (the number of automatic washings), etc. is stored.

The cleaning operation will be described.
When the cleaning operation is started by the bathtub cleaning device 10 by operating an operation terminal such as the kitchen remote control 12 or the cleaning remote control 13, the control unit 21 opens the drain plug 4, stores hot water in the storage tank 22, and pumps 28. Is driven to mix the detergent with the hot water supplied to the cleaning nozzle 5, and the detergent and the hot water are sprayed from the cleaning nozzle 5.

One cleaning process consists of an initial rinse wash with only hot water (several tens of seconds), then multiple washes and standby operations with detergent-containing hot water, and a final rinse with only hot water (several tens of seconds). ) And. The cleaning and standby operation includes a cleaning operation using hot water containing detergent for several tens of seconds, and a standby operation for about 10 seconds following this cleaning operation.

The flow rates of the constant flow rate valves 26a and 26b are, for example, 5 L / min, respectively, and the discharge amount of the pump 28 is, for example, 6.5 L / min. When the water level in the storage tank 22 becomes low, the electromagnetic on-off valves 25a and 25b Both are opened and hot water is supplied at a flow rate of 10 L / min, and when the water level in the storage tank 22 becomes high, one of the electromagnetic on-off valves 25a and 25b is closed and the flow rate is 5 L / min. Hot water is supplied at.

Next, the overall structure of the cleaning unit 6 will be described.
As shown in FIG. 2, in the upper part of the inside of the casing 33 of the cleaning unit 6, the electromagnetic on-off valves 25a and 25b and the constant flow rate valves 26a, which are interposed in the two branch passages 23a and 23b of the hot water supply pipe 23, respectively. 26b is attached. The storage tank 22 is arranged on the right side of the upper part of the casing 33, the two electromagnetic on-off valves 25a and 25b and the storage tank 22 are arranged side by side, and the flat box-shaped flow path forming case body 34 is the casing 33. It is arranged so as to straddle the upper surface of the casing and the upper surface of the storage tank 22. On the outside of the casing 33, the hot water supply pipe 23 is provided with a filter mounting portion 35 for mounting the filter 24.

As shown in FIGS. 2 to 5, a flat merging passage 23c having a large passage area, which is a merging passage 23c in which two branch passages 23a and 23b are merged, is formed inside the flow path forming case body 34. The merging passage 23c extends to the upper surface of the storage tank 22, and hot water is supplied to the storage tank 22 from the water supply port 36 near the downstream end of the merging passage 23c. The storage tank 22 is provided with a water level detector 22a and a buffer plate 37.
The buffer plate 37 is for suppressing the hot water in the storage tank 22 from waving and shaking the water surface due to the hot water falling from the water supply port 36 to the storage tank 22.

A discharge port 38 is formed in the central portion of the bottom plate of the storage tank 22, a pump 28 is interposed in the upstream portion of the discharge pipe 27 connected to the discharge port 38, and the pump 28 is on the lower side of the storage tank 22. The pump 28 discharges hot water sucked from the discharge port 38 to the cleaning nozzle 5 via the discharge pipe 27.

Most of the discharge pipe 27 is arranged in a horizontally long oval shape at the lower part inside the casing 33, and the thermistor 29, two check valves 30, a flow rate sensor 31, and an orifice are arranged in the discharge pipe 27. 32 is interposed. The orifice 32 is formed in a synthetic resin block 39, a detergent passage 40 to which a detergent supply pipe 7a is connected is formed in the synthetic resin block 39, and the detergent passage 40 is connected to the orifice 32 by a small diameter passage 40a. Further, the synthetic resin block 39 is equipped with an electromagnetic on-off valve 7c capable of opening and closing the detergent passage 40a. A discharge pipe 27 (corresponding to a part of the hot water passage) extending to the cleaning nozzle 5 is connected to the orifice 32.

Next, the flow path forming case body 34 will be described in detail.
As shown in FIGS. 2 to 5, the flow path forming case body 34 is provided between the electromagnetic on-off valves 25a and 25b to the storage tank 22, and the flow path forming case body 34 has a hot water passage inside. 23c (internal flow path) is formed and is formed in a flat box shape.

Hot water is supplied from the branch passages 23a and 23b to the internal passages (merging passages 23c, internal flow paths) of the flow path forming case body 34, and hot water is supplied to the storage tank 22 from one water supply port 36 on the downstream side. The flow path forming case body 34 is a flat flow path forming portion 41 to which the electromagnetic on-off valves 25a and 25b are connected, and has a flow path forming portion 41 having a deceleration function for decelerating hot water and an upper surface of the storage tank 22. It is integrally formed with a lid forming portion 42 that forms a lid portion that covers the above. The upper surface of the merging passage 23c inside the flow path forming portion 41 is covered with a top plate 41a made of a thin metal plate, and the top plate 41a is fixed by a plurality of screws 41b. The flow path forming case body 34 is fixed to the casing 33 by a plurality of screws 34a.

Constant flow rate valves 26a and 26b are provided on the downstream side of the electromagnetic on-off valves 25a and 25b in the branch passages 23a and 23b, and two constant flow rate valves are provided on the lower surface side of the flow path forming portion 41 of the flow path forming case body 34. Two valve accommodating portions 43a and 43b to which 26a and 26b are mounted are provided. The valve accommodating portions 43a and 43b are formed of an annular short cylinder portion, and passage holes 43c and 43d (downstream ends of the branch passage) are formed on the upper wall portions of the valve accommodating portions 43a and 43b.

The lid forming portion 42 is formed with a water supply port 36 for communicating the merging passage 23c with the storage tank 22, and the water supply port 36 penetrates the bottom wall portion of the flow path forming portion 41 and projects vertically on both the upper and lower sides. It is formed in the shape of a short cylinder facing. Therefore, since the hot water falling from the water supply port 36 is rectified in a columnar shape, the hot water does not flow along the lower surface of the lid forming portion 42, and the detection accuracy of the water level detector 22a does not deteriorate.

Since the merging passage 23c inside the flow path forming portion 41 is a flat passage having a large cross-sectional area as compared with the cross-sectional areas of the two branch passages 23a and 23b, the electromagnetic on-off valves 25a and 25b and the constant flow rate valve 26a, The hot water flowing from the branch passages 23a and 23b to the merging passage 23c through the 26b is decelerated so as to have a low flow velocity in the merging passage 23c. Therefore, the water surface of the hot water in the storage tank 22 is less likely to undulate, and the water surface is less likely to shake. Therefore, the detection accuracy of the water level detector 22a does not deteriorate.

A mounting hole 44 for inserting and mounting the water level detector 22a is formed in the lid forming portion 42, and a plurality of screw holes 45 for fixing the cushioning plate 37 are also formed.
On the lower surface of the outer peripheral portion of the lid forming portion 42, a fitting portion 46 that fits inwardly from above is formed on the upper end portion of the outer peripheral wall of the storage tank 22.

The cushioning plate 37 is for suppressing the shaking of the water surface due to the hot water flowing into the storage tank 22 from the water supply port 36, and is made of a thin stainless steel plate. The buffer plate 37 has a vertical plate 37a extending vertically between the water supply port 36 and the water level detector 22a, and a horizontal horizontal plate 37b located below the water supply port 36.

The vertical plate 37a is arranged at a position such that the discharge port 38 is located closer to the water level detector 22a than the vertical plate 37a. The vertical plate 37a has a width of about 3/5 of the front-rear width of the storage tank 22, and the center of the vertical plate 37a substantially corresponds to the center of the water level detector 22a. The L-shaped portion at the upper end of the vertical plate 37a is fixed to the lower surface of the lid forming portion 42 by two screws 37c, and the vertical plate 37a extends vertically downward from the lower surface of the lid forming portion 42.

The horizontal plate 37b is arranged at a position substantially equal to the high water level.
An L-shaped portion is formed at the right end of the horizontal plate 37b, the horizontal plate 37b is inserted into a horizontal slit formed in the vertical plate 37a, and the L-shaped portion is fixed to the vertical plate 37a with two screws 37d and laterally. The plate 37b extends horizontally to the left from the vertical plate 37a.

The operation and effect of the bathtub cleaning device 10 described above will be described.
The hot water passage 23 to which hot water is supplied to the storage tank 22 is provided with electromagnetic on-off valves 25a and 25b, and a hot water flow path is formed inside between the electromagnetic on-off valves 25a and 25b and the storage tank 22. Moreover, a flow path forming case body 34 formed in a flat box shape is provided.

When hot water is stored in the storage tank 22, the hot water that has passed through the electromagnetic on-off valves 25a and 25b flows through the flat passage (flow path) inside the flat box-shaped flow path forming case body 34 and is supplied to the storage tank 22. Will be done. Since the hot water flowing through the merging passage 23c inside the flow path forming case body 34 is filled in the storage tank 22 in a decelerated state in the merging passage 23c, water splashing and water surface shaking are less likely to occur in the storage tank 22. There is no adverse effect on the water level detection accuracy.

The constant flow rate valves 26a and 26b are provided on the downstream side of the electromagnetic on-off valves 25a and 25b in the branch passages 23a and 23b, and the constant flow rate valves 26a and 26b are mounted on the flow path forming case body 34. 43b is provided. Therefore, the structure for mounting the constant flow rate valves 26a and 26b is simplified, and the constant flow rate valves 26a and 26b can be easily mounted.

The plurality of electromagnetic on-off valves 25a and 25b and the storage tank 22 are arranged side by side, and the flow path forming case body 34 is a flat flow path forming portion 41 to which the electromagnetic on-off valves 25a and 25b are connected to decelerate hot water. The flow path forming portion 41 having a deceleration function and the lid forming portion 42 forming the lid portion covering the upper surface of the storage tank 22 are integrally formed.

As described above, the flow path forming case body 34 has a function of connecting the electromagnetic on-off valves 25a and 25b, a function of forming an internal flow path and decelerating hot water, a function of forming a lid of the storage tank 22, and the like. It is a multifunctional member to have. Since the fitting portion 46 that fits into the upper end portion of the outer peripheral wall of the storage tank 22 is formed on the lower surface portion of the outer peripheral portion of the lid forming portion 42, the structure of the lid of the storage tank 22 is simplified.

The storage tank 22 includes a water supply port 36, a discharge port 38, a water level detector 22a, and a buffer plate 37. In order to suppress the shaking of the water surface due to the hot water flowing from the water supply port 36 by the buffer plate 37, the water level detector 22a The detection accuracy does not decrease.

Since the shock absorber 37 has a vertical plate 37a extending vertically between the water supply port 36 and the water level detector 22a, it is possible to effectively prevent hot water falling from the water supply port 36 from scattering toward the water level detector 22a. .. Therefore, there is no possibility that the detection accuracy of the water level detector 22a will deteriorate due to scattered water droplets or the like.

Moreover, since the buffer plate 37 has a horizontal horizontal plate 37b located below the water supply port 36, the horizontal plate 37b receives and cushions the hot water falling from the water supply port 36, and the water surface due to the hot water flowing in from the water supply port 36. Can effectively suppress the shaking of the water supply.

Since the discharge port 38 is located closer to the water level detector 22a than the vertical plate 37a of the shock absorber 37, the water falling from the water supply port 36 suppresses the shaking of the water surface in the vicinity of the discharge port 38, so that the pump 28 air biting can be prevented.
Since the cushioning plate 37 is fixed to the flow path forming case body 34 straddling the electromagnetic on-off valves 25a and 25b and above the storage tank 22, the fixing structure for fixing the cushioning plate 37 becomes simple.

Next, an example of partially modifying the above embodiment will be described.
(1) The bathtub cleaning device 10 of the above embodiment has been described by taking the case of performing cleaning using hot water supplied from the hot water supply device 2 as an example, but has a configuration in which cleaning is performed using water supplied from a clean water source. It can also be. In that case, a constant flow valve capable of exerting the desired flow rate even when the water pressure of the water supply is low, such as on the upper floors of an apartment, is required. If only one constant flow rate valve is incorporated, a constant flow rate valve with a large flow rate will be adopted, so that the required minimum water pressure will be as high as about 0.15 MPa.
However, since the present invention employs two constant flow rate valves 26a and 26b having a relatively small flow rate, it can be operated even at a minimum water pressure significantly lower than about 0.15 MPa.
The above can be said in the same manner because the hot water supply pressure of the hot water supply device 2 in the above embodiment is proportional to the water pressure of the water source.

(2) In addition, a person skilled in the art can carry out the present invention in a form in which various modifications are added to the above embodiment without departing from the spirit of the present invention, and the present invention also includes such modified forms. be.

1 Bathtub 2 Hot water supply device 5 Cleaning nozzle 6 Cleaning unit 7 Detergent tank 7c Electromagnetic on-off valve 10 Bathtub cleaning device 11 Bathroom remote control 13 Cleaning remote control 22 Storage tank (hot water storage unit)
22a Water level detector 23 Hot water supply pipe (hot water passage)
23a, 23b Branch passage 23c Confluence passage 25a, 25b Electromagnetic on-off valve 26a, 26b, 26c, 26d Constant flow rate valve 27 Discharge pipe (hot water passage)
28 Pump 34 Flow path forming case body 36 Water supply port 37 Buffer plate 37a Vertical plate 37b Horizontal plate 41 Flow path forming part 42 Lid forming part

Claims (3)

Bathtub cleaning equipped with a hot water storage unit that is provided in the middle of the hot water passage that supplies hot water to the cleaning nozzle and can store hot water supplied from the hot water passage, and a pump that can supply hot water from this hot water storage unit to the cleaning nozzle. In the device
The hot water storage unit includes a water supply port into which hot water from the upstream flows, a discharge port for discharging hot water to be sent to a pump, a water level detecting means for detecting the water level of hot water stored inside, and an inflow from the water supply port. Equipped with a cushioning plate that suppresses the shaking of the water surface due to hot water
The bathtub cleaning device is characterized by having a vertical plate extending vertically between the water supply port and the water level detecting means and a horizontal plate located below the water supply port. The bathtub cleaning device according to claim 1, wherein the discharge port is located closer to the water level detecting means than the vertical plate of the cushioning plate. An electromagnetic on-off valve is provided in the hot water passage to which hot water is supplied to the hot water storage portion, and a flow path forming case body formed in a flat box shape straddling the electromagnetic on-off valve and above the hot water storage portion. The bathtub cleaning device according to claim 1 or 2, wherein the cushioning plate is fixed to the flow path forming case body.

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