JP4346347B2 - Bathtub cleaning equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bathtub cleaning device that performs hot water from a circulation circuit that performs reheating and sprinkling of cleaning water from a single hot water outlet.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an automatic bath apparatus provided with a circulation circuit that supplies hot water to a bathtub, pumps out hot water from the bathtub, heats it, and returns it to the bathtub again is often used. In addition, a bath cleaning device that cleans a bathtub by supplying cleaning water to a cleaning nozzle provided in the bathtub of such an automatic bath device and spraying the cleaning water toward the inner wall of the bathtub has come to be used. ing. The present applicant has developed an apparatus having the following structure (see Patent Document 1).
[0003]
The cleaning nozzle is rotatably provided, and is configured to eject the cleaning water while rotating when the pressure of the cleaning water flowing inside becomes a certain level or more.
[0004]
FIG. 3 is a schematic configuration diagram of a conventional bathtub cleaning apparatus. As shown in FIG. 3, the conventional bathtub cleaning device 50 has a hot water outlet 52 and a cleaning nozzle 53 disposed at the upper and lower positions of the inner wall of the bathtub 51, and a water absorption hose 54 disposed at the bottom of the bathtub 51.
[0005]
The water absorption hose 54 and the hot water outlet 52 are connected by a circulation circuit that performs chasing.
[0006]
The circulation circuit includes a return pipe 55 connected to the water absorption hose 54, a pump 56 connected to the downstream side of the return pipe 55, a bath water heating unit 57 provided on the downstream side of the pump 56, and a bath water heating unit. 57, a flow path switching three-way valve 58 provided on the downstream side of 57, the other two connection ports of the three-way valve 58, the outlet port 59 and the cleaning nozzle 53 connected to the outlet port 59 and the cleaning nozzle 53, respectively. 60.
[0007]
When washing the bathtub 51, the flow path to the forward piping 59 of the three-way valve 58 is shut off, and the other two flow paths are opened. First, a small amount of washing water is applied to the bathtub 51 and the pump 56 is operated. The cleaning water is once pumped from the bottom of the bathtub 51 by the water absorption hose 54, then passes through the return pipe 55, the pump 56, the bath water heating unit 57, and the three-way valve 58 and then passes through the cleaning pipe 60. , And is ejected from the cleaning nozzle 53. The cleaning nozzle 53 is rotated by the pressure of the cleaning water, and the cleaning water is scattered throughout the bathtub 51.
[0008]
When reheating the hot water in the bathtub 51, the flow path to the cleaning pipe 60 of the three-way valve 58 is blocked and the other two flow paths are opened. When the pump 56 is operated, the hot water passes through the same flow path as the washing water, reaches the three-way valve 58 from the bathtub 51, passes through the outgoing pipe 59, and is discharged into the bathtub 51 from the hot water outlet 52. The flow rate of the cleaning water at the time of cleaning and the flow rate of hot water at the time of reheating are substantially the same, but the hot water outlet 52 is not a rotating nozzle, so that the hot water is not scattered.
[0009]
The present applicant has also developed an apparatus that simplifies the structure of the bathtub by sharing the hot water outlet and the washing nozzle (see Patent Document 2).
[0010]
FIG. 4 is a schematic configuration diagram of another conventional bathtub cleaning apparatus. As shown in FIG. 4, another conventional bathtub cleaning device 70 has a hot water outlet 72 for performing hot water and washing the bathtub at the lower part of the inner wall of the bathtub 71, and a water absorption hose 74 at the bottom of the bathtub 71. ing.
[0011]
The hot water outlet 72 is provided with a cleaning nozzle 73. The water absorption hose 74 and the hot water outlet 72 are connected by a circulation circuit that performs chasing.
[0012]
The circulation circuit includes a return pipe 75 connected to the water absorption hose 74, a pump 76 connected to the downstream side of the return pipe 75, a bath water heating unit 77 provided on the downstream side of the pump 76, and a bath water heating unit. On-off valve 78 for pressure measurement provided on the downstream side of 77 and a downstream pipe provided on the downstream side of on-off valve 78 for discharging hot water into the bathtub 71 and for jetting wash water into the bathtub 71 79.
[0013]
A flow rate sensor 80 is provided in the middle of the return pipe 75. The pump 76 is provided with a drain pipe 81 that drains the pumped hot water without sending it to the bath water heating unit 77. Further, the midway position of the drain pipe 81 is connected to two places of the three-way valve 82, and further, a bypass pipe 83 connected to the three-way valve 82 between the flow sensor 80 and the pump 76 in the return pipe 75. Is provided. In addition, a hot water filling pipe 85 connected to a water heater (not shown) is connected between the flow rate sensor 80 and the pump 76 in the return pipe 75, and the hot water filling pipe 85 is located in the middle of the hot water filling pipe 85. A valve 86 is provided.
[0014]
A water level sensor 84 that measures the water level in the bathtub 71 by pressure is provided in the middle of the outgoing pipe 79 and immediately downstream of the on-off valve 78.
[0015]
When measuring the water level, the on-off valve 78 is first closed and the pressure applied to the water level sensor 84 is measured. Since the downstream side of the water level sensor 84 communicates with the inside of the bathtub 71, the pressure corresponding to the water level in the bathtub 71 is applied to the water level sensor 84 by closing the on-off valve 78. In the state where the on-off valve 78 is opened, pressure is applied from the upstream side of the water level sensor 84 when the pump 76 is rotating or when the hot water filling valve 86 is opened. Therefore, the measured value of the water level sensor 84 becomes high and correct. Measurement cannot be performed.
[0016]
Since the hot water outlet 72 is provided with the washing nozzle 73, the hot water flown from the washing nozzle will be scattered if the washing nozzle 73 rotates unless the flow rate of hot water at the time of hot water is reduced. For this reason, a means for adjusting the flow rate at the time of tapping is necessary. Therefore, by operating the three-way valve 82 to connect the downstream flow path and the upstream flow path of the pump 76, the water discharged from the pump is returned to the upstream side to reduce the flow rate.
[0017]
[Patent Document 1]
JP 2000-271031 A (page 2-6, FIG. 1)
[Patent Document 2]
JP 2003-52558 A (page 2-4, FIG. 1)
[0018]
[Problems to be solved by the invention]
However, in such a configuration, the three-way valve 82 and the bypass pipe 83 are required, so that the apparatus becomes large and the piping becomes complicated.
Therefore, the problem to be solved by the present invention is to provide a bathtub cleaning apparatus capable of controlling the flow rate of hot water and cleaning water flowing in the circulation circuit with a simple configuration.
[0019]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a bathtub cleaning apparatus of the present invention is provided with a circulation circuit in which a hot water inlet and a hot water outlet of a bathtub are connected, and bath water heating that is provided in the circulation circuit and heats hot water flowing in the circulation circuit. And a pump that circulates the hot water pumped out from the hot water inlet through the circulation circuit and out of the hot water outlet into the bathtub, and is provided at the hot water outlet, enabling sprinkling while rotating by the pressure of the washing water In the bathtub cleaning apparatus provided with a cleaning nozzle, the circulation circuit is provided with a flow rate adjusting valve capable of adjusting the amount of hot water flowing through the opening by adjusting the opening, and the opening of the flow rate adjusting valve is adjusted. Then, a control device is provided that circulates at a flow rate so that the cleaning nozzle does not rotate when performing the memory, and circulates at a flow rate that rotates the cleaning nozzle when performing bath cleaning .
[0020]
The flow regulating valve can be provided at any position in the circulation circuit. By reducing the opening of the flow rate adjustment valve, the flow rate of the fluid flowing in the circulation circuit can be reduced, and by opening the flow rate adjustment valve, the flow rate can be increased and the flow rate can be increased without using other valve bodies or flow paths. Can be adjusted.
[0021]
When the flow rate adjusting valve is provided downstream of the circulating water heating part of the circulation circuit, the water pressure in the pipe of the bath water heating part is kept high and the boiling point is lowered even when the opening of the flow rate adjusting valve is reduced. And the noise generated in the pipe during heating can be reduced.
[0022]
When the opening degree of the flow rate adjusting valve is adjusted by a motor, the same device configuration as that in the case where only the opening / closing operation is performed by the motor can be obtained, so that an increase in the size of the device can be prevented. As the motor, a geared motor or a stepping motor can be used.
[0023]
The circulation circuit, the flow rate sensor is provided, the control device When you adjust the opening of the flow control valve according to the output of the flow sensor, the opening degree of the flow rate adjusting valve is reset in accordance with the flow be able to.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
FIG. 1 is a schematic configuration diagram of a bathtub cleaning apparatus of the present invention. As shown in FIG. 1, the bathtub cleaning device 1 of the present invention is provided with a circulation circuit 5 in which a hot water inlet 3 and a hot water outlet 4 of a bathtub 2 are connected, and hot water flowing in the circulation circuit 5 provided in the circulation circuit 5. A bath water heater 6 for heating, a pump 7 for circulating hot water pumped out from the hot water inlet 3 in the circulation circuit 5 and pouring the hot water into the bathtub 2 from the hot water outlet 4, and the pressure of the washing water And a cleaning nozzle 8 capable of spraying water while rotating.
[0025]
The tip of the hot water inlet 3 is provided at the bottom of the bathtub 2.
[0026]
On the downstream side of the bath water heating unit 6, a flow rate adjusting valve 9 is provided that can adjust the amount of hot water flowing inside by adjusting the opening degree. A water level sensor 10 that measures pressure is provided immediately downstream of the flow rate adjustment valve 9.
[0027]
The flow rate adjusting valve 9 is connected to a geared motor 11 for adjusting the opening degree. The geared motor 11 can adjust the opening degree of the flow rate adjusting valve 9 in the range of 0 ° to 90 °.
[0028]
A flow rate sensor 12 is provided on the upstream side of the pump 7.
[0029]
The flow sensor 12, the geared motor 11 and the water level sensor 10 are connected to the control device 13. The control device 13 can adjust the opening degree of the flow rate adjusting valve 9 according to the output of the flow rate sensor 12.
[0030]
Next, a method for controlling the flow rate adjusting valve 9 will be described.
FIG. 2A is a graph showing the relationship between time and opening when the flow rate adjusting valve is opened from a closed state to a predetermined opening, and FIG. 2B is a predetermined adjusting valve when cleaning is performed after reheating. It is a graph which shows the relationship between time and opening when opening to an opening. As shown in FIGS. 1 and 2A, when the flow rate adjusting valve 9 is opened, an output voltage is applied from the control device 13 so that the geared motor 11 rotates forward, and the opening x is changed from 0 ° to 90 °. Measure the time t ₉₀ until The control device obtains a time t _x from 90 ° to a predetermined opening x using an equation of t _x = (90−x) / 90 × t ₉₀ , and from time t ₁ to time t _x + t ₁ The output voltage is applied so that the geared motor 11 rotates in reverse until.
[0031]
When reheating hot water in the bathtub 2, it is necessary to decrease the flow rate so that the cleaning nozzle 8 does not rotate, and when cleaning the bathtub 2, it is necessary to increase the flow rate so that the cleaning nozzle rotates. The control device 13 stores an opening degree x ₁ at the time of normal tracking and an opening degree x ₂ (x ₁ <x ₂ ) larger than this in order to cope with a shortage of flow rate at the time of tracking. . In addition, the opening degree at the time of washing | cleaning is 90 degrees (fully opened state).
[0032]
As shown in FIG. 1 and FIG. 2 (B), when tracking is performed, the opening x is once set to 90 ° and then returned to x ₁ . Here, when the flow rate of the washing water detected by the flow rate sensor 12 is smaller than the preset amount, the opening degree x is temporarily increased to 0 ° instead of increasing to x ₂ as it is. Then, after obtaining a time for returning the opening degree x to 90 ° and returning to x ₂ , the opening degree x is rotated to x ₂ .
[0033]
By performing the control in this way, it is possible to prevent the accumulated deviation of the opening and perform accurate positioning, and the opening can be adjusted in the same procedure every time, so the control circuit is simplified. it can.
[0034]
Next, the procedure for using the bathtub cleaning device 1 when cleaning the bathtub 2 will be described.
When washing the bathtub 2, first, 2 to 5 L of hot water is put into the bathtub 2.
[0035]
Then, when the lid of the bathtub 2 is closed, the opening x of the flow rate adjusting valve 9 is adjusted to 90 ° (fully open), and the pump 7 is operated, high-pressure washing water flows into the circulation circuit 5, and the washing nozzle 8 Wash water is spouted from. In this state, the inside of the bathtub 2 is cleaned.
[0036]
Next, a procedure for chasing hot water in the bathtub 2 will be described.
First, the flow rate adjusting valve 9 is fully closed, and the water level sensor 10 is used to confirm that an amount of hot water that can be circulated is contained in the bathtub 2.
[0037]
And the opening degree x of the flow regulating valve 9 is adjusted to x1, and the pump 7 is operated. Since hot water having a lower pressure flows in the circulation circuit 5 than in the case of cleaning, the cleaning nozzle 8 does not rotate, and the hot water slowly flows into the bathtub 2. In this case as well, the flow rate in the circulation circuit 5 is monitored by the flow rate sensor 12, and when the flow rate of hot water is larger than the threshold value, the control device 13 once closes the flow rate adjustment valve 9 and adjusts the opening degree. Readjust.
[0038]
As described above, since the flow rate control of the hot water flowing in the circulation circuit can be performed using only one flow rate adjusting valve 9, the configuration of the apparatus is simplified and the size can be reduced.
[0039]
【The invention's effect】
The present invention has the following effects.
(1) Since the bathtub cleaning apparatus of the present invention is provided with a flow rate adjustment valve capable of adjusting the amount of hot water flowing through the circulation circuit by adjusting the opening, without using other valve bodies or flow paths. The flow rate can be adjusted and controlled with a simple configuration.
(2) If the flow rate adjustment valve is provided downstream from the bath water heating part of the circulation circuit, the water pressure in the pipe of the bath water heating part is kept high and the boiling point is lowered even when the opening of the flow rate adjustment valve is reduced. And the noise generated in the pipe during heating can be reduced.
(3) When the opening degree of the flow rate adjusting valve is adjusted by a motor, the same device configuration as that in the case where only the opening / closing operation is performed by the motor can be obtained, so that the size of the device can be prevented from being increased.
(4) If the circulation circuit is provided with a flow rate sensor and a control device that adjusts the opening degree of the flow rate adjustment valve according to the output of the flow rate sensor, the opening degree of the flow rate adjustment valve is reset according to the flow rate. And the reliability of the apparatus is improved.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a bathtub cleaning apparatus of the present invention.
FIG. 2A is a graph showing the relationship between time and opening when a flow rate adjusting valve is opened from a closed state to a predetermined opening, and FIG. 2B is an adjusting valve when cleaning is performed after chasing. It is a graph which shows the relationship between time and opening degree when opening to a predetermined opening degree.
FIG. 3 is a schematic configuration diagram of a conventional bathtub cleaning device.
FIG. 4 is a schematic configuration diagram of another conventional bath cleaning apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bathtub washing | cleaning apparatus 2 Bathtub 3 Hot-water inlet 4 Outlet 5 Circulation circuit 6 Bath water heating part 7 Pump 8 Washing nozzle 9 Flow control valve 10 Water level sensor 11 Geared motor 12 Flow sensor 13 Controller

Claims (5)

A circulation circuit in which a hot water inlet and a hot water outlet of a bathtub are connected; a bath water heating unit provided in the circulation circuit for heating hot water flowing in the circulation circuit; and hot water pumped out from the hot water inlet in the circulation circuit In a bathtub cleaning apparatus comprising a pump that circulates the hot water into the bathtub from the hot water outlet, and a cleaning nozzle that is provided at the hot water outlet and that can be sprinkled while rotating by the pressure of the cleaning water,
The circulation circuit is provided with a flow rate adjustment valve capable of adjusting the amount of hot water flowing inside by adjusting the opening degree ,
A control device is provided that adjusts the opening of the flow rate adjusting valve so as to circulate at a flow rate that does not rotate the cleaning nozzle when performing remedy, and circulates at a flow rate that rotates the cleaning nozzle when performing bath cleaning. Bathtub cleaning device characterized by being made.   The bathtub cleaning apparatus according to claim 1, wherein the flow rate adjusting valve is provided on the downstream side of the bath water heating unit of the circulation circuit.   The bathtub cleaning apparatus according to claim 1, wherein a water level sensor for measuring pressure is provided immediately downstream of the flow rate adjustment valve.   The bathtub cleaning apparatus according to any one of claims 1 to 3, wherein the flow rate adjustment valve is adjusted in opening degree by a motor. The circulation circuit is provided with a flow sensor ,
Wherein the control device, bathtub cleaning apparatus according to the Turkish adjust the opening of the flow control valve according to the output of the flow sensor of claims 1, wherein any section of four.

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