JP2023003385A - Bathtub washing device - Google Patents

Abstract

To provide a bathtub washing device in which air entrainment is prevented from occurring in a pump, a decrease in detection accuracy of water level detection means is prevented, and drainage performance is secured when water is drained from a hot water storage part.SOLUTION: A bathtub washing device (10) comprises: a storage tank (22) provided in the middle of a hot water passage for supplying hot water to a washing nozzle (5), and capable of storing the hot water from an upstream part of the hot water passage; and a pump (28) capable of pumping the hot water in the storage tank (22) to the washing nozzle (5). The storage tank (22) comprises water supply ports (42a and 42b) into which the hot water from the upstream part flows, a discharge port (43) for discharging the hot water to the pump (28), and partition plates (44a and 44b) for partitioning a space in the storage tank (22) so that the hot water can pass therethrough. The partition plates (44a and 44b) are formed so as to extend vertically upward from a bottom surface of the storage tank (22) between the water supply ports (42a and 42b) and the discharge port (43) in a planar view.SELECTED DRAWING: Figure 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub cleaning apparatus, and more particularly to an apparatus capable of preventing air entrapment in a pump and preventing deterioration of water level detection accuracy due to air bubbles.

As a bathtub cleaning device, tap water from a tap water source is stored in a storage tank, and the water in the storage tank is pressurized by a pump and sprayed onto the inner surface of the bathtub from an injection nozzle on the bathtub side together with detergent. Conventionally, a method of cleaning the wall surface has been adopted.

For example, in the bathtub cleaning device described in Patent Document 1, tap water from a water supply source is stored in an atmosphere open tank, and the water in the atmosphere open tank is pressurized by a pump, and the detergent is sent from the bathtub side injection pipe to the bathtub. The inner wall surface of the bathtub is cleaned by jetting it to the inner surface.

In the automatic bathtub cleaning device described in Patent Document 2, a water supply pipe for supplying clean water from a water tank connected to a tap to the cleaning nozzle is connected, and a detergent supply pipe extending from the detergent supply tank is connected to the water supply pipe. , the inner wall surface of the bathtub can be automatically washed by ejecting a mixture of clean water and detergent from a washing nozzle.

However, recent bathtub cleaning devices are provided with a hot water reservoir capable of storing hot water supplied from the hot water supply device and a pressurizing pump that pressurizes the hot water from the hot water reservoir and feeds it to the cleaning nozzle.
A detergent supply system that supplies detergent to the hot and cold water supplied to the washing nozzle, and a water level detection means that detects the water level of the hot and cold water are provided, and a mixed liquid of hot water and detergent is sprayed from the washing nozzle to wash. It is

Japanese Utility Model Publication No. 4-406632 JP-A-10-272071

When the water supply unit from which hot water is dropped and supplied to the hot water storage unit from the hot water supply system and the discharge port to the pump are arranged close to each other in a plan view, the hot water falling from the water supply unit causes hot water in the hot water storage unit. When a lot of air bubbles are generated in the pump and the air bubbles are sucked by the pump, there is a problem that air entrainment occurs, and the air entrainment lowers the cleaning performance.
Moreover, if many bubbles are generated in the hot water reservoir, the liquid level detected by the water level detecting means becomes unstable, resulting in a problem of lowering the accuracy of water level detection.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent air entrainment from occurring in a pump in a bathtub cleaning apparatus, to prevent deterioration in detection accuracy of a water level detection means, and to ensure drainage performance when discharging water from a hot water reservoir. etc.

A bathtub cleaning apparatus according to claim 1 comprises: a hot water reservoir provided in the middle of a hot water passage for supplying hot water to a washing nozzle and capable of storing hot water from an upstream portion of the hot water passage; In a bathtub cleaning apparatus having a pump capable of pumping to a nozzle, the hot water reservoir includes a water supply port into which hot water flows from the upstream portion, a discharge port for discharging hot water to the pump, and a space within the hot water reservoir. and the partition plate is formed to extend vertically upward from the bottom surface of the hot water reservoir between the water supply port and the discharge port in a plan view. .

According to the above configuration, the partition plate is provided to partition the space in the hot water reservoir so that hot water can pass through, and the partition plate extends vertically upward from the bottom surface of the hot water reservoir between the water supply port and the discharge port in a plan view. Therefore, even if hot water is dropped from the water supply port and air bubbles are generated in the hot water storage part, the partition plate exists between the water supply port and the discharge port in a plan view. Since the flow path for air bubbles to reach the discharge port is lengthened and the air bubbles disappear, it is possible to prevent air entrainment in the pump.

According to claim 2, the bathtub cleaning apparatus according to claim 1 is characterized in that, in the invention of claim 1, the hot water reservoir has an overflow port, and the upper end of the partition plate is positioned above the lower end of the overflow port. there is
According to the above configuration, even if the level of hot water in the hot water reservoir rises to the maximum, the hot water does not flow over the upper end of the partition plate, so the function of the partition plate can be maintained.

In the bathtub cleaning apparatus of claim 3, in the invention of claim 1, the discharge port is provided in the vicinity of the central portion of the bottom plate of the hot water reservoir, and the water supply port is located on the top plate of the hot water reservoir when viewed from above. and two partition plates are provided on both sides of the outlet, and the partition plates are provided between the respective water inlets and the outlet.

According to the above configuration, two water supply ports are provided, and a partition plate is provided between each water supply port and the discharge port in plan view. Since hot water is supplied from two water supply ports, the flow rate of hot water supplied from each water supply port is halved, and the amount of air bubbles generated in the hot water reservoir is reduced. Moreover, since the partition plate is provided between each water supply port and the discharge port, the amount of air bubbles flowing to the discharge port and the pump is minimized, so that air entrainment of the pump can be prevented.

According to a fourth aspect of the present invention, there is provided a bathtub cleaning apparatus according to the third aspect of the invention, wherein the hot water reservoir includes water level detection means for detecting the water level of hot water stored therein, and the water level detection means is located in the space within the hot water reservoir. The water level detection means is disposed in the space between the pair of partition plates, and extends in a direction perpendicular to a line connecting the two water supply ports from the discharge port in a plan view toward the side opposite to the water supply port. One end of the partition plate is connected to a side plate of the hot water reservoir on the water level detecting means side with respect to the discharge port, and the other end of the partition plate and the A hot water passing gap is formed between the water level detecting means and the side plate of the hot water storing portion on the opposite side with respect to the discharge port.

According to the above configuration, the flow path from each water supply port to the water level detection means becomes long in a plan view, and air bubbles are less likely to flow to the vicinity of the water level detection means. can be done.

According to a fifth aspect of the bathtub cleaning apparatus, in the fourth aspect of the invention, the two partition plates are formed in the shape of the letter 8 with the water level detecting means side widening in a plan view, and the bottom surface of the hot water reservoir is: It is characterized in that the portion of the intermediate line between the pair of partition plates is slanted to be the lowest.

If the hot water in the hot water reservoir is not completely drained when the bathtub is not being washed, there is a risk that mold will grow in the hot water reservoir.
According to the above configuration, when draining water from the hot water reservoir, the hot water flowing down along the bottom surface of the hot water reservoir flows along the lower end of the eight-shaped partition plate between the pair of partition plates. , and drained to the discharge port, the water can be drained completely.

According to a sixth aspect of the invention, there is provided a bathtub cleaning apparatus according to the fourth or fifth aspect, wherein a notch is provided in an upper portion of the partition plate in the vicinity of the end on the one end side.
According to the above configuration, the water flows to the reservoir between the pair of partition plates through the hot water passage gap and the notch on the end side of the two partition plates. and a pair of partition plates to easily match the water level of the reservoir.

The bathtub cleaning apparatus according to claim 7 is characterized in that, in the invention according to claim 6, the depth of the cutout portion from the upper end of the partition plate is such that the notch portion of the partition plate on the overflow port side is closer to the overflow port. It is characterized in that it is formed shallower than the notch of the partition plate on the opposite side.
According to the above configuration, when overflowing from the overflow port, the flow rate flowing through the notch portion of the partition plate on the overflow port side is smaller than the flow rate flowing through the notch portion of the partition plate on the opposite side to the overflow port. , the overflow from the overflow port can be suppressed as much as possible.

The present invention has various effects as described above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a hot water supply device, a bathtub, a bathtub cleaning device, etc., according to an embodiment of the present invention; Fig. 2 is a configuration diagram of a cleaning unit of the bathtub cleaning apparatus as viewed from the front; FIG. 4 is a plan view of a hot water reservoir of the washing unit; It is a top view of a washing unit.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated based on an Example.

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 filling and reheating pipe 3, and the pipe 3 is connected to a circulation adapter 1a of the bathtub 1. It is At the bottom of the bathtub 1, there are a drain plug 4 for automatically draining hot water and operated by an operation part 4a, and a washing nozzle for spraying detergent and hot water to wash the bathtub 1. 5 are provided. The bathtub 1 is covered with a lid (not shown).

In the vicinity of the bathtub 1, a washing unit 6 for supplying detergent and hot water to the washing nozzle 5 and a detergent tank 7 for storing the detergent are arranged. The bathtub cleaning device 10 has a cleaning unit 6, a detergent tank 7, and a cleaning nozzle 5, which are connected by a plurality of pipes.
A detergent pipe 7 a for supplying detergent from the detergent tank 7 and a hot water supply pipe 2 a for supplying hot water from the hot water supply device 2 are connected to the washing unit 6 . A level sensor 7 b is provided in the detergent tank 7 and its detection signal is supplied to the power communication unit 8 . A power communication unit 8 installed on the ceiling of the bathroom, for example, is connected to devices inside the cleaning unit 6 by signal lines or the like.

The water heater 2 is a combustion-type water heater that receives tap water W and supplies hot water heated by, for example, combustion heat of fuel. A bathroom remote controller 11 and a kitchen remote controller 12 are communicably connected to the hot water supply device 2 for starting the hot water filling operation and the reheating operation, setting the hot water supply temperature setting, and the like. A cleaning remote controller 13 for starting the cleaning operation of the bathtub cleaning device 10 is connected to the control section 21 of the power supply 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. can communicate with 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 section 12a and an audio output section 12b. The cleaning remote controller 13 has a two-digit number display section 13a and an audio output section 13b.

The kitchen remote controller 12 and the washing remote controller 13 are operation terminals for starting the washing operation of the bathtub washing device 10 . It should be noted that the operation for starting the cleaning operation of the bathtub cleaning device 10 can also be performed from the bathroom remote controller 11 .

The cleaning unit 6 of the bathtub cleaning apparatus 10 includes a storage tank 22 (hot water storage section) for storing hot water, and a hot water supply pipe 23 (corresponding to a part of the hot water passage) that is connected to the hot water supply pipe 2a and supplies hot water to the storage tank 22. ), comprising a hot water supply pipe 23 having two branch passages 23a and 23b, a filter 24 interposed in the hot water supply pipe 23, and a filter 24 interposed in one branch passage 23a in this order from the upstream side. It has an electromagnetic on-off valve 25a and a constant flow valve 26a, and an electromagnetic on-off valve 25b and a constant flow valve 26b which are interposed in order from the upstream side in the other branch passage 23b.

The storage tank 22 made of synthetic resin is provided with a float-type water level detector 34 (water level detection means) capable of detecting a low water level and a high water level, and its detection signal is supplied to the controller 21 . The storage tank 22 is also provided with an overflow port 22b (see FIG. 1). An electrode-type water level detector may be employed instead of the water level detector 34 in some cases.

Further, the washing unit 6 includes a discharge pipe 27 (corresponding to a part of the hot water passage) extending from the storage tank 22 to the washing nozzle 5, and a pump 28 sequentially interposed in the discharge pipe 27 from the upstream side. It has a stop valve 30, a flow rate sensor 31, a thermistor 29 and an orifice 32 to which the detergent supply pipe 7a is connected. A detergent supply pipe 7a extending from the detergent tank 7 is provided with an electromagnetic on-off valve 7c.

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

The cleaning operation will be explained.
When an operation terminal such as the kitchen remote control 12 or the cleaning remote control 13 is operated to start the cleaning operation of the bathtub cleaning apparatus 10, the control unit 21 opens the drain plug 4 to store hot water in the storage tank 22, and the pump 28. is driven to mix the detergent with the hot water supplied to the washing nozzle 5, and the detergent and the hot water are sprayed from the washing nozzle 5. - 特許庁

One cleaning process consists of initial rinsing with only hot water (several 10 seconds), subsequent cleaning with hot water containing detergent and standby operation, and final rinsing with only hot water (several 10 seconds). ) and The cleaning and standby operation includes a cleaning operation using hot water containing detergent for several seconds and a standby operation for several tens of seconds following this cleaning operation.

The flow rates of the constant flow valves 26a and 26b are, for example, 5 L/min, respectively, and the discharge rate of the pump 28 is, for example, 6.5 L/min. are both opened to supply hot water at a flow rate of 10 L/min, and when the water level in the storage tank 22 reaches a high level, one of the electromagnetic on-off valves 25a and 25b is closed to provide a flow rate of 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, electromagnetic on-off valves 25a, 25b and constant flow valves 26a, 26a, 26a, 26a, 26b are installed in the upper part of the inside of the casing 33 of the washing unit 6, respectively. 26b is installed. Incidentally, two reinforcing ribs 40 are formed on the inner surface of the intermediate portion of the casing 33 .

A storage tank 22 is provided on the right side of the upper portion of the casing 33. A lid member 22c of the storage tank 22 is connected to two branch passages 23a and 23b, respectively, and a water supply for supplying hot water to the storage tank 22. Ports 42a, 42b are provided.
Downstream portions of the branch passages 23a and 23b are composed of pipe members 41a and 41b, and downstream ends of the pipe members 41a and 41b are connected to water supply ports 42a and 42b, respectively.

Since the upstream ends of the pipe members 41a and 41b are arranged on the left and right, and the water supply ports 42a and 42b are arranged on the right and left, the length of the pipe member 41a is approximately twice that of the pipe member 41b. The reason why the lengths of the pipe members 41a and 41b are different is to prevent confusion between the pipe members 41a and 41b during assembly. In addition, the pipe members 41a and 41b are integrally molded from synthetic resin in order to be as compact as possible.

A discharge port 43 is formed in the central portion of the bottom plate of the storage tank 22 , a pump 28 is connected to the discharge port 43 , and a discharge pipe 27 extends from the discharge portion of the pump 28 . The pump 28 discharges hot water sucked from the discharge port 43 to the washing nozzle 5 through the discharge pipe 27 .

A thermistor 29 , two check valves 30 , a flow rate sensor 31 and an orifice 32 are interposed in the discharge pipe 27 . A detergent supply pipe 7a extending from the detergent tank 7 is connected to an electromagnetic on-off valve 7c, and a detergent passage extending from the electromagnetic on-off valve 7c is connected to an orifice 32 by a small-diameter passage. The orifice 32 is connected to a discharge pipe 27 (corresponding to part of the hot water passage) extending to the washing nozzle 5 . A harness extending from the equipment in the casing 33 is led to the outside through a screw-in tubular fitting 35 .

Next, the storage tank 22 will be explained.
The storage tank 22 has a lid member 22c (top plate) fixed to the upper end of the tank body with bolts or screws. The storage tank 22 has water supply ports 42a and 42b into which hot water flows from the pipe members 41a and 41b, a discharge port 43 that discharges hot water to the pump 28, and a partition plate that partitions the space in the reservoir tank 22 so that hot water can pass through. 44a and 44b.

The partition plates 44a and 44b are formed to extend vertically upward from the bottom surface of the storage tank 22 between the water supply ports 42a and 42b and the discharge port 43 in plan view. The storage tank 22 is provided with the overflow port 22b, and the upper ends of the partition plates 44a and 44b are located above the lower end of the overflow port 22b by a distance a (for example, about 10 to 15 mm).

The discharge port 43 is provided in the vicinity of the central portion of the bottom plate of the storage tank 22, and the water supply ports 42a and 42b are provided on the cover member 22c (top plate) of the storage tank 22 at positions spaced apart on both sides of the discharge port 43 in plan view. Two partition plates 44a and 44b are provided between the water supply ports 42a and 42b and the discharge port 43, respectively.

The storage tank 22 is provided with the water level detector 34 for detecting the water level of the hot water stored therein. In order to avoid interference with the water level detector 34, the front side plate 22f is formed with a bulging portion 22e that bulges forward.

The water level detector 34 is arranged at a position misaligned from the discharge port in the direction perpendicular to the line connecting the two water supply ports 42a and 42b from the discharge port 43 in plan view in the direction opposite to the water supply port. . In addition, "center misalignment" means a state in which the center is misaligned. A mounting plate 34a of the water level detector 34 is fixed to the lid member 22c, a cylindrical body 34b extends downward from the mounting plate 34a, and a cylindrical body 34c having a smaller diameter than the cylindrical body 34b extends downward from the lower end of the cylindrical body 34b. , an annular float 34d is attached to the cylindrical body 34c so as to be able to move up and down.

One end (front end) of each of the partition plates 44 a and 44 b is connected to the front side plate 22 f of the storage tank 22 on the side of the water level detector 34 with respect to the discharge port 43 . Hot water passage gaps 45a and 45b are formed between the other end (rear end) of each of the partition plates 44a and 44b and the rear plate 22r of the storage tank 22 on the opposite side of the discharge port 34 from the water level detector 34. It is

The two partition plates 44a and 44b are formed in the shape of the letter 8 with the water level detector 34 side widening in a plan view, and the bottom surface 22d of the storage tank 22 is formed on the middle line 22c between the pair of partition plates 44a and 44b. It is gently sloping so that the part is the lowest.

Next, the operation and effects of the bathtub cleaning device 10 described above will be described.
Since the downstream portions of the branch passages 23a and 23b are composed of the pipe members 41a and 41b, the structure is simplified, the sealing performance can be ensured, and the assembling efficiency is improved. Moreover, since the pipe members 41a and 41b have different lengths, confusion between the pipe members 41a and 41b does not occur during assembly.

Partition plates 44a and 44b are provided to partition the space in the storage tank 22 so that hot water can pass through. Since it is formed so as to extend vertically upward, even if hot water is dropped and supplied from the water supply ports 42a and 42b and bubbles are generated in the hot water in the storage tank 22, the water supply ports 42a and 42b and the water supply ports 42a and 42b are discharged from the plan view. Since the partition plates 44a and 44b are provided between the outlets 43, the flow path for air bubbles to reach the discharge port 43 is lengthened, and the air bubbles disappear.

Since the upper ends of the partition plates 44a, 44b are located above the lower end of the overflow port 22b, even if the level of hot water in the storage tank 22 rises to the maximum, the hot water will not exceed the upper ends of the partition plates 44a, 44b. Therefore, the function of the partition plates 44a and 44b can be maintained.

Two water supply ports 42a and 42b are provided, and partition plates 44a and 44b are provided between the water supply ports 42a and 42b and the discharge port 43 in plan view. Since hot water is supplied from the two water supply ports 42a and 42b, the flow rate of hot water supplied from each of the water supply ports 42a and 42b is halved. Moreover, since the partition plates 44a, 44b are provided between the water supply ports 42a, 42b and the discharge port 43, the amount of air bubbles flowing to the discharge port 43 and the pump 28 is reduced, so that the pump 28 can be prevented from being caught in air. can be done.

The water level detector 34 is disposed at a position misaligned in a direction orthogonal to and separating from a line connecting the two water supply ports 42a and 42b from the discharge port 43 in plan view. One end (front end) is connected to the front side plate 22f of the storage tank 22 on the water level detector 34 side with respect to the discharge port 43, and the other end (rear end) of the partition plates 44a and 44b and the discharge port 43 are connected. Since hot water passage gaps 45a and 45b are formed between the water level detector 34 and the rear side plate 22r of the storage tank 22 on the opposite side, from the water supply ports 42a and 42b to the water level detector 34 in plan view. Since the flow path becomes longer and almost no air bubbles flow to the vicinity of the water level detector 34, it is possible to prevent deterioration of water level detection accuracy due to air bubbles.

When the bathtub 1 is not being washed, if the hot water in the storage tank 22 is not completely drained, there is a risk that mold will grow in the storage tank 22. - 特許庁
When draining water from the storage tank 22, hot water flowing down along the bottom surface 22d of the storage tank 22 flows along the lower ends of the eight-shaped partition plates 44a and 44b. Since it flows to the area between and is drained to the discharge port 43, it is possible to completely drain the water.

Embodiment 2, which is a partial modification of Embodiment 1, will be described with reference to FIGS. 5 to 8. FIG.
However, the same reference numerals are given to the same constituent elements as in the first embodiment, and the explanation is omitted, and mainly different constituent elements will be explained.

As a first change from the first embodiment, the overflow port 22bA is changed.
An overflow port 22bA is formed in the upper portion of the right side plate 22m of the storage tank 22 on the opposite side of the casing 33. As shown in FIG. The overflow port 22bA has a front-to-rear width that is slightly smaller than the front-to-rear width of the right side plate 22m, and a vertical width that is about 1/3 of the height dimension of the right side plate 22m.
The lower end of the overflow port 22bA is set at a position lower than the upper ends of the partition plates 44aA and 44bA by a distance a.
The reason why the overflow port 22bA is enlarged in this way is to eliminate the shortage of the opening area of the overflow port 22bA when overflow occurs due to a failure of the pump 28 during hot water supply from the water supply ports 42a and 42b.

As a second change from Example 1, a change was added to the float 34dA of the water level detector 34A. In order to increase the buoyancy of the float 34dA, the height of the float 34dA is increased, an annular recess 34e is formed in the bottom of the float 34dA, and the diameter of the discharge port 43A is reduced. The change in shape of the float 34dA and the discharge port 43A is to prevent the float 34dA from sticking to the bottom position when the water level rises from the low water level state, thereby improving the water level detection performance.

As a third change from the first embodiment, notches 46a and 46b are formed in the partition plates 44aA and 44bA. The hot water storage part in the storage tank 22 has a central chamber 47c between the pair of partition plates 44aA and 44bA, a right chamber 47a on the right side of the partition plate 44aA, and a left chamber 47b on the left side of the partition plate 44bA.
Since hot water is supplied to the right chamber 47a and the left chamber 47b from the water supply ports 42a and 42b, the water level of the right chamber 47a and the left chamber 47b tends to be higher than the water level of the central chamber 47c. As a countermeasure, if the hot water passage gaps 45a and 45b are enlarged, air bubbles are likely to flow into the central chamber 47c, which is not preferable.

Therefore, cutouts 46a and 46b are formed in the upper portions near the ends on the one end (front end) side of the partition plates 44aA and 44bA, respectively. The depth of the notches 46a and 46b from the upper ends of the partition plates 44aA and 44bA is the notch portion of the partition plate 44aA on the side of the overflow port 22bA. It is formed shallower than 46b.

The size of the notch 46a is, for example, 5 to 15 mm wide×20 to 30 mm deep from the upper end of the partition plate 44aA, and the size of the notch 46b is, for example, 5 to 15 mm wide×the upper end of the partition plate 44bA. 30 to 40 mm in depth from the However, this dimension is an example and is not limited to this. The reason why the notch 46a is formed shallower than the notch 46b is to minimize the amount of overflow from the overflow port 22bA.

Since the bathtub cleaning device 10 described above has the same functions and effects as those of the bathtub cleaning device 10 of the first embodiment, the functions and effects unique to the second embodiment will be described.
Since the overflow port 22bA is enlarged as described above, overflow performance can be ensured even when the pump 28 fails.

The height dimension of the float 34dA of the water level detector 34A is increased, the annular recess 34e is formed at the bottom of the float 34dA, and the diameter of the discharge port 43A is reduced. It became difficult to stick, and the water level detection performance improved.

Since the notches 46a and 46b are formed in the partition plates 44aA and 44bA, the water level of the right chamber 47a and the left chamber 47b and the water level of the central chamber 47c are easily equalized. In addition, since the notches 46a and 46b are formed on the opposite side of the hot water passage gaps 45a and 45b, the water levels of the three chambers 47a, 47b and 47c can be equalized while suppressing the inflow of air bubbles into the central chamber 47c. can be planned. Moreover, since the notch 46a on the side of the overflow port 22bA is formed shallower than the notch 46b on the side opposite to the overflow port 22bA, overflow from the overflow port 22bA can be slightly suppressed.

Next, an example in which the above embodiment is partially modified will be described.
(1) The bathtub cleaning device 10 of the above embodiment was explained using the hot water supplied from the hot water supply device 2 as an example, but the configuration is such that the cleaning is performed using the water supplied from the tap water source. can also be
(2) The partition plates 44a, 44b; 44aA, 44bA are formed in a moderately refractive shape in a plan view, but may be formed in a straight shape.

(3) In addition, those skilled in the art can implement various modifications to the above embodiment without departing from the scope of the present invention, and the present invention includes such modifications. be.

1 Bathtub 5 Cleaning nozzle 10 Bathtub cleaning device 22 Storage tank (hot water storage unit)
22b, 22bA overflow port
23, 27 hot water passage 28 pump 34, 34A water level detector (water level detection means)
42a, 42b Water supply ports 43, 43A Discharge ports 44a, 44b, 44aA, 44bA Partition plates 45a, 45b Hot water passage gaps 46a, 46b Notch

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a hot water supply device, a bathtub, a bathtub cleaning device, etc., according to Embodiment 1 of the present invention; Fig. 2 is a configuration diagram of a cleaning unit of the bathtub cleaning apparatus as viewed from the front; FIG. 4 is a plan view of a storage tank of the washing unit; It is a top view of a washing unit. FIG. 2 is a view equivalent to FIG. 2 of a cleaning unit according to Example 2; 3 equivalent view of the washing unit. It is a perspective view of a storage tank. It is a perspective view of a storage tank.

Claims (7)

A hot water reservoir provided in the middle of a hot water passage for supplying hot water to the washing nozzle and capable of storing hot water from the upstream part of the hot water passage, and a pump capable of pumping the hot water in the hot water reservoir to the washing nozzle. In the bathtub washing device,
The hot water storage section includes a water supply port into which hot water flows from the upstream portion, a discharge port that discharges hot water to the pump, and a partition plate that partitions the space in the hot water storage section so that hot water can pass through,
The bathtub cleaning device, wherein the partition plate is formed to extend vertically upward from the bottom surface of the hot water reservoir between the water supply port and the discharge port in a plan view. 2. The bathtub cleaning apparatus according to claim 1, wherein said hot water reservoir has an overflow port, and an upper end of said partition plate is positioned above a lower end of said overflow port. The discharge port is provided in the vicinity of the central portion of the bottom plate of the hot water reservoir, and the two water supply ports are provided on the top plate of the hot water reservoir on both sides of the discharge port in plan view, and the partition 2. The bathtub cleaning apparatus according to claim 1, wherein a plate is provided between each water supply port and each discharge port. The hot water storage unit includes water level detection means for detecting the water level of hot water stored therein, the water level detection unit being disposed in the space between the pair of partition plates in the space in the hot water storage unit,
The water level detection means is disposed at a position offset from the discharge port in a plan view in a direction orthogonal to a line connecting the two water supply ports from the discharge port in a direction opposite to the water supply port,
One end of the partition plate is connected to a side plate of the hot water reservoir on the water level detection means side with respect to the discharge port, and the other end of the partition plate and the discharge port are on the opposite side of the water level detection means. 4. The bathtub cleaning device according to claim 3, wherein a hot water passage gap is formed between the side plate of the hot water storage part and the side plate of the hot water storage part. The two partition plates are formed in a figure eight shape with the water level detection means side widened in plan view,
5. The bathtub cleaning apparatus according to claim 4, wherein the bottom surface of the hot water storage part is inclined so that a midline portion between the pair of partition plates is the lowest. 6. The bathtub cleaning apparatus according to claim 4, wherein a notch is provided in an upper portion of the partition plate near the end on the one end side. The depth of the notch from the upper end of the partition plate is such that the notch of the partition plate on the overflow port side is shallower than the notch of the partition plate on the opposite side to the overflow port. The bathtub cleaning device according to claim 6, characterized in that:

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