JPH06170121A - Circulation and clarification apparatus for bathtub - Google Patents

Abstract

PURPOSE:To provide a circulation and clarification apparatus for a bathtub with high safety by preventing ozone from flowing into the bathtub. CONSTITUTION:A sterilization tool 41 for ozone sterilization and water level detecting sensors 48 and 49 and an ozone decomposition tool 51 are provided in a clarification tool 46 and a flow sensor 56, an insulating heater 58 and a temp. sensor 59 are arranged in the midway of a water pipe from the outlet of the clarification tool 46 to a bathtub 31. Therefore, contamination of hot water does not adhere to the flow sensor 56 and it works stably. The insulating heater 58 is not heated under no lead flow of ozone into the water pipe can be detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to filtration of hot water in a bathtub,
The present invention relates to a bathtub circulation purifying device for purifying and cleaning a filter medium.

[0002]

2. Description of the Related Art In recent years, there has been a demand for a circulation purifying apparatus for bathtubs which is capable of purifying and sterilizing bathtub water all the time so as to bathe in a timely manner all day and which is highly safe.

A conventional bathtub circulation purifying apparatus will be described below. FIG. 2 is a piping diagram of a conventional bathtub circulation purifying apparatus. In FIG. 2, 1 is a bathtub, 2 is a suction port provided in the bathtub 1, and the suction port 2 is connected to a suction port of a pump 4 via a water pipe 3. The pump 4 is, for example, 4
It has a capacity of 100 liters / minute at 00 W, and circulates the hot water in the bathtub 1. A drain port of the pump 4 is connected via a water pipe 5 to an electric valve 6 that controls the circulating amount of hot water. The motor-operated valve 6 is connected to a jet port 8 provided in the bathtub 1 via a water pipe 7. A jet flow path is formed by these members.

Further, the water pipe 5 is branched and connected to the water pipe 9,
The water pipe 9 is connected to the suction port of a pump 10 that creates a circulating purified stream. The pump 10 has a capacity of 10 liters / minute at 60 W, for example. The drain port of the pump 10 is connected to a flow rate sensor 11 that detects the flow rate of the circulation purification flow, and the other of the flow rate sensors 11 is connected to the inlet of a sterilizer 12 that sterilizes the hot water with ozone. The sterilizer 12 is composed of an ozonizer that generates ozone and an ejector that mixes ozone into the circulation purification stream.

The outlet of the sterilizer 12 is connected to an electric three-way valve 14 via a water pipe 13. Water pipes 15 and 16 are connected to the remaining two ports of the electric three-way valve 14, and the water pipe 15 is connected to an outlet (not shown) of backwash water. Water pipe 1
6 is connected to the purifier 17. Purifier 17 is bathtub 1
A filter medium 18 for filtering the hot water inside, water level detection sensors 19, 20 for detecting the water level in the purifier 17, a heat retention heater 21 for heating the circulating hot water, and a temperature sensor 22 for detecting the temperature of the circulating hot water. The electric valve 23 for discharging ozone in the purifier 17, and the ozone decomposer 24 connected to the other side of the electric valve 23 and containing an ozone catalyst for decomposing ozone. The outlet of the purifier 17 is connected to an electric three-way valve 26 via a water pipe 25. Remaining 2 of electric three-way valve 26
The water pipes 27 and 28 are connected to one port, and the other of the water pipes 27 is connected to the branched water pipe 7. Also water pipe 28
The other is connected to the branched water pipe 3. Reference numeral 29 is a control unit for controlling the pumps 4, 10, the electric valves 6, 23, the flow rate sensor 11, the electric three-way valves 14, 26, the water level detection sensors 19, 20, the warming heater 21, and the temperature sensor 22. Reference numeral 30 denotes an operation unit for operating the bathtub circulation purification device.

The operation of the bathtub circulation purifying apparatus having the above-described structure will be described below. First, when the switch of the operation unit 30 is set to the circulation jet mode that causes a jet flow, the electric valve 6 is opened by the signal of the control unit 29,
The electric three-way valve 14 connects the water pipe 13 and the water pipe 16, and the electric three-way valve 26 connects the water pipe 25 and the water pipe 28. After that, when the pump 4 is operated, the hot water in the bathtub 1 is sucked through the suction port 2, and about 70% of the sucked hot water is jetted from the jet port 8 together with bubbles as a jet flow. About 30% of the hot water passes through the sterilizer 12 and the purifier 17, is sterilized and purified, and then passes through the water pipe 28 to be mixed with the hot water sucked from the bathtub 1 in the water pipe 3.

Next, when the switch of the operation unit 30 is set to the circulation purification mode, the pump 4 is stopped by the signal of the control unit 29, the electric valve 6 is closed, and the electric three-way valve 14 connects the water pipe 13 and the water pipe 16. , The electric three-way valve 26 is a water pipe 25 and a water pipe 2.
Connect 7 After that, when the pump 10 is operated, the bathtub 1
The hot water inside is sucked in through the suction port 2, and the water pipes 3, 5, 9
After passing through the sterilizer 12 and the purifier 17, after being sterilized and purified, it passes through the water pipes 25, 27, 7 and from the jet port 8 to the bathtub 1
Returned to.

The operation of the purifier 17 at this time will be described. Initially, the electric valve 23 is closed. When hot water containing ozone flows in from the inlet of the purifier 17, the filter medium 1
It is filtered at 8 and flows out from the outlet. At this time, if it is detected that the ozone pressure becomes higher and the water level gradually lowers with time, and becomes lower than the water level detection sensor 19, the control unit 29 outputs a signal to open the motor-operated valve 23, and the electric motor 23 is operated. Open the valve 23. Ozone flows into the ozone decomposer 24 through the electric valve 23, is decomposed by the ozone catalyst, and is sequentially discharged into the air. Then, when it is detected that the ozone pressure in the purifier 17 becomes low, the water level becomes high, and the water level becomes higher than the water level detection sensor 20, the control unit 29 outputs a signal and closes the electric valve 23. On the other hand, if the temperature of the hot water in the purifier 17 is detected by the temperature sensor 22 and the temperature falls below a predetermined temperature, the control unit 29 outputs a signal for turning on the switch of the heat retention heater 21 to heat the hot water. Keep at a suitable temperature. In this way, the purifier 17 performs the operations of filtering and purifying hot water, exhausting ozone, and maintaining heat.

The hot water in the bathtub 1 is always sterilized and purified by the operation of the circulation jet mode and the circulation purification mode, and the hot water is kept at an appropriate temperature, so that the hot water can be bathed all day in time without replacement. .

As described above, when the circulation jet mode and the circulation purification mode operation are continued, the filter medium 18 in the purifier 17 becomes dirty and the filtering ability is deteriorated. Is played. This backflow cleaning mode is performed when the timer provided in the control unit 29 performs a predetermined cycle, and in the circulation purification mode, the filter medium 18 is used.
When the flow rate sensor 11 detects that the flow rate has decreased below a predetermined value due to the contamination of No. 2, it is performed based on a signal from the control unit 29.

The operation in the backwash mode will be described below. In the backwash mode, the control unit 29 outputs a signal to open the electric valve 6, the electric three-way valve 14 connects the water pipe 15 and the water pipe 16, and the electric three-way valve 26 makes the water pipe 25 and the water pipe 2.
Connect 7 Then, when the pump 4 is operated, the hot water in the bathtub 1 is sucked through the suction port 2 and the water pipes 3, 5, 27,
It flows back through the purifier 17 through 25. Filter material 1 at this time
Dirt such as scales and dust adhering to the surface of 8 is peeled off and is discharged together with the hot water through the water pipes 16 and 15 through the outlet. The filter medium 18 is regenerated by performing this operation for a predetermined time. When the backflow cleaning mode ends, the mode returns to the mode before the backflow cleaning mode.

[0012]

However, in the above-mentioned conventional configuration, the dirt of the hot water is easily attached to the flow rate sensor to easily cause the malfunction of the flow rate sensor. Also, if either the water level sensor in the purifier or the motor-operated valve fails, ozone will not be discharged from the purifier and will flow into the bathtub through the water pipe, or the heater inside the filter tank will be left empty. Had a point.

The present invention solves the above-mentioned problems of the prior art by preventing dirt of hot water from adhering to the flow rate sensor, and even when either the water level detection sensor or the motor operated valve fails, It is an object of the present invention to provide a highly safe circulation purifying device for bathtubs, which prevents ozone from flowing out and prevents the warming heater from being cooked in the air.

[0014]

To achieve this object, the circulation purifying apparatus for a bath according to the present invention has a flow rate sensor, a heat retaining heater and a temperature detecting sensor in the middle of the water pipe from the outlet of the purifier to the bath. I have set up.

[0015]

With this configuration, since the dirt of the hot water is filtered by the purifier, the dirt of the hot water does not adhere to the flow rate sensor arranged at the rear of the purifier. If one of them fails, ozone flows out of the purifier into the water pipe, but at that time, the flow rate of the hot water in the water pipe sharply decreases.Therefore, the flow rate sensor detects that the flow rate is low and the control unit operates the bath circulation purification device. Since it is stopped, ozone does not flow into the bathtub, and the heating heater can be prevented from being cooked in the air.

[0016]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a piping diagram of a bathtub circulation purifying apparatus according to an embodiment of the present invention. In FIG. 1, 3
1 is a bathtub, 32 is a suction port provided in the bathtub 31,
The suction port 32 is connected to the suction port of a pump 34 via a water pipe 33. The pump 34 has a capacity of 100 l / min at 400 W, for example, and circulates the hot water in the bath 31. The drain port of the pump 34 is connected via a water pipe 35 to an electric valve 36 that controls the circulating amount of hot water. The motor-operated valve 36 is connected to a jet port 38 provided in the bathtub 31 via a water pipe 37. A jet flow path is formed by these members.

Further, the water pipe 35 is branched and connected to the water pipe 39, and the water pipe 39 is connected to the suction port of a pump 40 for producing a circulating purified flow. The pump 40 is, for example, 60 W and 1
It has a capacity of 0 liters / minute. The drainage port of the pump 40 is connected to the inlet of a sterilizer 41 for sterilizing hot water with ozone.
The sterilizer 41 is composed of an ozonizer that generates ozone and an ejector that mixes ozone into the circulation purification stream. The outlet of the sterilizer 41 is connected to an electric three-way valve 43 via a water pipe 42. Water pipes 44 and 45 are connected to the remaining two ports of the electric three-way valve 43, and the water pipe 44 is connected to a backwash water discharge port (not shown). The water pipe 45 is connected to the purifier 46. The purifier 46 is a filter medium 47 that filters hot water in the bathtub 31, water level detection sensors 48 and 49 that detect the water level in the purifier 46, an electric valve 50 that discharges ozone in the purifier 46, and an electric valve 50. The ozone decomposer 51 is connected to the other side of the ozone decomposer 51 and contains an ozone catalyst for decomposing ozone. The outlet of the purifier 46 is connected to the electric three-way valve 53 via the water pipe 52. Electric three-way valve 5
The remaining two ports of 3 are connected to water pipes 54 and 55, and the other of the water pipes 54 is connected to a branched water pipe 33. The water pipe 55 is connected to a flow rate sensor 56 for detecting the flow rate, the other side of the flow rate sensor 56 is connected to a water pipe 57, and the water pipe 57 has a heat retention heater 58 for heating the circulating hot water.
A temperature sensor 59 for detecting the temperature of the circulating hot water is provided, and the other of the water pipes 57 is connected to the branched water pipe 37. 60 is a pump 34, 40 and an electric valve 36, 5
0, a flow rate sensor 56, electric three-way valves 43 and 53, water level detection sensors 48 and 49, a heat retention heater 58, and a temperature sensor 59. Reference numeral 61 is an operation unit for operating the bathtub circulation purification device.

The operation of the bathtub circulation purifying apparatus constructed as above will be described below. First, when the switch of the operation unit 61 is set to the circulation jet mode that causes a jet flow, the electric valve 36 is opened by the signal of the control unit 60, the electric three-way valve 43 connects the water pipe 42 and the water pipe 45, and the electric three-way valve 53 The water pipe 52 and the water pipe 54 are connected. After that, when the pump 34 is operated, the hot water in the bathtub 31 is sucked through the suction port 32, and about 70% of the sucked hot water is jetted together with bubbles from the jet outlet 38 as a jet flow.
About 30% of hot water passes through the sterilizer 41 and the purifier 46 and sterilizes.
After being purified, the water passes through the water pipes 52 and 54, and the water pipe 33 passes through the bathtub 31.
It is mixed with hot water sucked from.

Next, when the switch of the operation unit 61 is set to the circulation purification mode, the pump 34 is stopped by the signal of the control unit 60, the electric valve 36 is closed, and the electric three-way valve 43 is set to the water pipe 4.
2 and the water pipe 45 are connected, and the electric three-way valve 53 connects the water pipe 52 and the water pipe 55. Then, when the pump 40 is operated, the hot water in the bathtub 31 is sucked through the suction port 32, and the water pipe 3
After passing through 3, 35, 39, the sterilizer 41 and the purifier 46, and after being sterilized and purified, the water pipes 52, 55, the flow rate sensor 56, the water pipes 57, 37, and the bathtub 31 from the jet outlet 38.
Returned to. In this way, since the hot water purified by the purifier 46 flows through the flow rate sensor 56, the flow rate sensor 56
Stable operation is carried out without malfunction due to no contamination of hot water.

On the other hand, if the temperature of the hot water in the water pipe 57 is detected by the temperature sensor 59 and the temperature falls below the predetermined temperature, the control unit 60 outputs a signal to turn on the switch of the warming heater 58 to heat the hot water. And keep it at an appropriate temperature.

The operation of the purifier 46 at this time will be described. Initially, the electric valve 50 is closed. When hot water containing ozone flows in from the inlet of the purifier 46, the filter medium 4
It is filtered at 7 and flows out from the outlet. At this time, if it is detected that the ozone pressure becomes higher and the water level gradually lowers with the lapse of time and becomes lower than the water level detection sensor 48, the control unit 60 outputs a signal to open the electric valve 50, Open the motor operated valve 50. Ozone flows into the ozone decomposer 51 through the motor-operated valve 50, is decomposed by the ozone catalyst, and is sequentially discharged into the air. Then, when it is detected that the ozone pressure in the purifier 46 is low, the water level is high, and the water level is higher than the water level detection sensor 49, the control unit 60 outputs a signal and closes the electric valve 50. In this way, the purifier 46 carries out the operation of filtering and purifying hot water and exhausting ozone.

At this time, if one of the water level detection sensor 49 and the motor-operated valve 50 fails, the purifier 46 is filled with ozone and eventually flows out into the water pipes 52 and 55. At that time, however, the circulating flow rate sharply decreases. The flow rate sensor 56 detects the flow rate, and the control unit 60 stops the whole bathtub circulation purifying apparatus to prevent ozone from flowing out to the bathtub 31.

The hot water in the bathtub 31 is always sterilized and purified by the operation of the circulating jet mode and the circulating purifying mode, and is kept at an appropriate temperature, so that the bath can be bathed at a proper time all day without changing the hot water. .

As described above, when the circulation jet mode and the circulation purification mode operation are continued, the filter medium 47 in the purifier 46 becomes dirty and its filtering ability is deteriorated. Is played. The backwashing mode is performed by the timer provided in the control unit 60 at a predetermined cycle, and in the circulation purification mode.
When the flow rate sensor 56 detects that the flow rate is gradually reduced to a predetermined value or less due to the dirt, the control is performed based on a signal from the control unit 60.

The operation in the backwash mode will be described below. In the backwash mode, the control unit 60 outputs a signal to open the electric valve 36 and the electric three-way valve 43 to the water pipe 44.
And the water pipe 45 are connected, and the electric three-way valve 53 connects the water pipe 52 and the water pipe 55. After that, when the pump 34 is operated, the hot water in the bathtub 31 is sucked through the suction port 32, and the water pipe 33,
It flows back through the purifier 46 through 35, 57, 55 and 52. At this time, dirt such as scales and dust adhering to the surface of the filter medium 47 is peeled off and is discharged together with the hot water through the water pipes 45 and 44 and discharged from the outlet. The filter medium 47 is regenerated by performing this operation for a predetermined time. When the backflow cleaning mode ends, the mode returns to the mode before the backflow cleaning mode.

Further, since the heat retaining heater 58 is provided in the water pipe other than the purifier 46, the heat retaining heater 58 is not exposed to ozone and the idle cooking can be prevented.

[0027]

As described above, according to the present invention, by providing the flow rate sensor, the heat retention heater and the temperature detection sensor in the middle of the water pipe from the outlet of the purifier to the bath, dirt of the hot water is filtered by the purifier. , The hot water does not adhere to the flow rate sensor and it operates stably, and if either the water level detection sensor or the motor operated valve fails, ozone will flow out of the purifier into the water pipe. Since the flow rate of hot water drops sharply, the flow rate sensor detects it as a drop in flow rate, and the control unit stops the operation of the circulation purifying device for the bathtub, so ozone does not flow into the bathtub and the warming heater also does not cook the air. It is possible to realize an excellent bathtub circulation purification device with high safety.

[Brief description of drawings]

FIG. 1 is a piping diagram of a bathtub circulation purifying apparatus according to an embodiment of the present invention.

FIG. 2 is a piping diagram of a conventional circulation purification device for bathtub.

[Explanation of symbols]

31 Bathtub 32 Suction port 33, 35, 37, 39, 42, 44, 45, 52, 5
4,55,57 Water pipe 34,40 Pump 36,50 Electric valve 38 Jet port 41 Sterilizer 43,53 Electric three-way valve 46 Purifier 47 Filter medium 48,49 Water level detection sensor 51 Ozone decomposer 56 Flow rate sensor 58 Heat retention heater 59 Temperature Sensor 60 Control unit 61 Operation unit

Claims (2)

[Claims] 1. A bathtub, a pump for circulating water in the bathtub, a filter for filtering water in the bathtub, and a flow rate sensor for detecting the flow rate of the filter provided at the outlet of the filter. , An operation switch, a control for circulating water in the bath with the pump to filter the water with the filter, and a control for driving the pump with a backwash operation for backwashing the inside of the filter A circulation purification device for a bathtub, which is provided with: 2. A bathtub, a pump for circulating water in the bathtub, a sterilizer for sterilizing water in the bathtub with ozone, and a filter for filtering water in the bathtub connected to the sterilizer. A water level detection sensor provided in the filter, an ozone decomposer for decomposing ozone of the sterilizer provided in the filter, and a flow rate of the filter provided at the outlet of the filter. A flow sensor for detecting, an operation switch, a filtering operation for circulating water in the bath with the pump to filter the water with the filter, and a backwash for driving the pump to backwash the inside of the filter. A circulating purifying apparatus for a bathtub, comprising: a control unit for performing an operation.