JPH08141330A - Purification device of hot bathtub water - Google Patents

Abstract

PURPOSE: To obtain a purification device of hot bathtub water heated by leveling off power consumption for a heater and supplying such an electric power continuously. CONSTITUTION: This purification device of hot bathtub water pumps up hot water 2 from a bathtub 1 to a main device system 4 through a hot water suction pipe 3 and purifies hot water, and at the same time, heats hot water to an appropriate temperature level using a heater 7 and again ejects the treated hot water into the bathtub from a hot water ejection pipe 9. In this device, an electric power at a phase angle based on a hot water temperature-rising rate in a unit control time calculated by a hot water temperature-rising rate calculation means and measured by a unit control time measurement means, is supplied through a phase angle control power supply circuit. Consequently, the shortcoming of a conventional ON-OFF control to intermittently supply a large amount of electric power to the heater is eliminated. In addition, any other electric equipment can be connected to a wire distribution channel with a surplus current breaker of low capacity, and at the same time, it is possible to solve problems such as equipment damage, power loss and fire risks due to the defect of a mechanical relay contact point or the generation of heat between the contact points of wired equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath device, and more particularly, to an appropriate temperature of hot water circulating in a bath water purifying device for performing cleaning treatment such as filtration, heat retention, sterilization, etc. while forcibly circulating hot water in a bath. It relates to a heating device for keeping.

[0002]

2. Description of the Related Art Recently, a bath water purifying device has been actively used, which keeps the hot water in the bathtub clean and at an appropriate temperature constantly, allows a comfortable bathing at any time for 24 hours, and saves water.

An example of such a bathtub cleaning device is as shown in FIG. 6, in which 1 is a bathtub, 2 is hot water, 3 is a suction pipe for pumping up hot water 2 in the bathtub, and 4 are An apparatus main body in which devices for cleaning the hot water pumped up by the hot water suction pipe 3 are collectively arranged, and 9 is a spout pipe for ejecting the hot water treated by the device main body 4 again into the bathtub 1. .

In order to remove dirt from the bath water, the apparatus main body 4 is provided with a filtration tank 5 and various types of granular filter media such as activated stones and porous ceramic balls or fibrous filters, which are loaded individually or in combination. A circulation pump 6 for forced circulation, a heater 7 for keeping the hot water at an appropriate temperature, an ozonizer 8 for ozone sterilizing the hot water, and other cleaning equipment are provided.

Reference numeral 10 is a prefilter attached to the tip of the hot water pipe 3 to remove large dirt before it is pumped up to the apparatus main body 4, and 11 is hot water after cleaning treatment in the bathtub 1 as a jet flow having a high flow rate. Is a jet nozzle for ejecting air into the jet nozzle, and 12 is an intake pipe for sucking air into the jet nozzle 11 from the negative pressure portion.

An electromagnetic valve 13 for opening and closing the conduit is provided at the tip of the intake pipe 12, and the ozonizer 8 is provided on the way. When the electromagnetic valve 13 is opened, the air sucked from the intake pipe 12 is released. Bath 1 with hot water from jet nozzle 11
When the ozonizer 8 is actuated, the sucked air is ozoned and the hot water 2 in the bath 1 is sterilized with ozone.

In the apparatus constructed as described above, the bath water is purified by removing large dirt with the prefilter 10, filtering with the filtration tank 5, and heating with the heater 7 to the bath tube 9 from the hot water pipe 9. To squirt again.

At the time of this cleaning, the solenoid valve 13 of the intake pipe 12
Is open, the jet nozzle 1 at the tip of the spout tube 9
From 1 the suction pipe 1 from the negative pressure part formed by accelerating the flow velocity of the hot water.
The air sucked in through 2 blows into the bathtub 1 together with the hot water to form a bubble bath, and the ozonizer 8 is operated to operate the intake pipe 1
When the air sucked from 2 is turned into ozone, the hot water 2 in the bathtub 1
Is ozone sterilized.

In the apparatus constructed as described above, a hot water temperature sensor 14 for detecting the temperature of circulating hot water is provided at an appropriate position in the circulation path, and the heater 7 is controlled by a controller (not shown). ON / OFF control is performed via a relay connected based on the hot water temperature detected by the hot water temperature sensor 14, and the hot water temperature is maintained at the set temperature.

[0010]

However, a heater having a considerably large output of about 100 V-800 W is used for heating the bath water, and when such a large-output heater is ON / OFF controlled, the heater is heated. 8 when turns on
Since a large current of A flows, the following various problems occur.

First, an outlet which is an outlet of a commercial power source to which a wiring plug of the apparatus body 4 is connected, a cord for indoor wiring to the outlet, an overcurrent breaker for limiting a current flowing through the cord for indoor wiring, and the like. , All wiring equipment must be of a large capacity with a sufficient margin for the maximum current so that the above maximum current can flow frequently.

Therefore, when the capacity of the existing wiring equipment does not have a sufficient margin for the maximum current, the wiring equipment has a sufficient margin for the maximum current in order to install the device. Will have to update to.

Next, in order to control ON / OFF of a high-output heater, a relay having a large contact capacity must be used as a relay connected to open and close the supply of electric power to this heater. Since the mechanical contact is frequently opened and closed, damage such as corrosion occurs and durability is lost.

Further, heat is generated by a contact resistance proportional to the square of the current and the resistance at the connecting portion between the wiring plug of the apparatus main body 4 and the outlet, which causes a voltage drop and wasteful power consumption. The plug or outlet will be damaged.

The present invention eliminates the above-mentioned drawbacks of the prior art, and controls the hot water of the bathtub so that the set hot water temperature can be accurately maintained without flowing the maximum current when the heater is turned on. It is intended to provide.

[0016]

That is, according to the present invention, hot water in a bathtub is sucked up from a hot water pipe by a circulation pump and forcedly circulated, and dirt is filtered in a filtration tank in a circulation path, heat is kept by a heater, and sterilized by ozone. In a bath water purifying device that performs a cleaning process such as the above, and then sprays the hot water after the cleaning process from the spout tube back into the bath, it is necessary to supply power to the heater via the phase angle control power supply circuit. In the first claim, the phase angle of the phase angle control power supply circuit for supplying electric power to the heater is based on the temperature increase rate per control unit time calculated by the temperature increase rate calculating means. The apparatus for cleaning bathtub hot water according to the second aspect is controlled.

[0017]

The present invention is configured as described above, and since electric power is supplied to the heater through the phase angle control power supply circuit, the amount of electric power supplied to the heater can be changed by changing the phase angle of the power supply. You can control the heating of the hot water by adjusting the
The temperature of the hot water can be easily adjusted without turning N-OFF.

Further, since the phase angle of the phase angle control power supply circuit is controlled on the basis of the rate of temperature rise per control unit time, the hot water is heated by changing the temperature gradient according to the temperature difference from the set hot water temperature. Therefore, precise temperature control can be performed, and the shorter the control unit time, the more precisely the hot water temperature can be controlled.

[0019]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a basic block diagram showing the basic structure of the present invention, and 15 is a control unit time measuring means.
The control unit time measuring means 15 measures the elapse of a unit time for controlling the heater 7.

Reference numeral 14 is a hot water temperature sensor provided in the hot water circulation path for detecting the temperature of the hot water circulating, and 16
Is a hot water temperature control signal generating means, which issues a signal for setting the control unit time to the control unit time measuring means 15 and a signal for starting the measurement of the control unit time, and at the same time causes the hot water temperature sensor 14 to A signal is issued to notify the start and end of the control unit time measurement.

Reference numeral 17 denotes a hot water temperature increase rate calculating means, which divides the difference in hot water temperature in the control unit time by the control unit time to obtain the hot water temperature increase rate in the control unit time.

Reference numeral 18 is a hot water temperature setting means for setting the hot water temperature to an arbitrary temperature. The hot water temperature set by the hot water temperature setting means 18 is stored in a set hot water temperature storage means 19, and 20 is a hot water temperature difference. The hot water temperature difference calculating means 20 calculates the temperature difference between the hot water temperature and the set hot water temperature at the end of the measurement of the control unit time.

Reference numeral 21 is a phase angle setting means. The phase angle setting means 21 sets the phase angle of the electric power of the power source supplied to the heater 7. The reference numeral 22 sets the phase angle by the phase angle setting means 21. Data indicating the relationship between the hot water temperature increase rate and the phase angle with respect to the temperature difference is stored.

Therefore, the phase angle setting means 21 sets the temperature rise rate in the control unit time calculated by the hot water temperature rise rate calculating means 17, and the hot water temperature at the end of the measurement of the control unit time obtained by the hot water temperature difference calculating means. The phase angle data corresponding to the hot water temperature difference, which is the temperature difference from the hot water temperature, is read from the hot water control phase angle data storage means 22 and the phase angle is set.

Reference numeral 23 is a phase angle control power supply circuit, which supplies the power of the phase angle set by the phase angle setting means 21 to the heater 7.
24 heater power consumption display circuit for displaying the heater power consumption according to the phase angle set by the phase angle setting means 21 on the heater power consumption display means 25.

A basic block diagram of the present invention as described above is shown in FIG. 2 as a control block diagram, and 26 is a hot water temperature provided in the input device so that the bather can arbitrarily set the hot water temperature. A hot water temperature setting key as the setting means 18, 27
Is a timer as the control unit time measuring means 15 for measuring the elapse of the control unit time.

Reference numeral 28 denotes a CPU as a central processing unit that performs arithmetic processing for controlling the apparatus, and includes hot water temperature control signal generating means 16, hot water temperature rising rate calculating means 17, hot water temperature difference calculating means 20, and phase angle setting. It functions as the means 21 and the like.

29 is a hot water temperature control data storage ROM,
The hot water temperature control data storage ROM 29 stores data for heating the hot water temperature by the heater based on the phase angle control, and corresponds to the hot water temperature control phase angle data storage means 22.

Reference numeral 30 denotes a program ROM, and various control programs for controlling the apparatus are stored in the program ROM 30, which naturally controls the phase angle of the hot water temperature including the control unit time. Since the control program of is also stored, the hot water temperature control signal generating means 1
Function as 6.

Reference numeral 31 denotes a RAM, which temporarily stores data for the CPU 28 to carry out arithmetic processing, and the hot water temperature setting means 1
Since the hot water temperature set in 8 is also stored, the set hot water temperature storage means 1
Also functions as 9.

Further, the hot water temperature sensor 14, the phase angle control power supply circuit 23, the heater 7, the heater power consumption display circuit 24,
The heater power consumption display device 25 and the like are also provided, but these are as described in the explanation of the basic block diagram.

In the apparatus of the present invention configured as described above, the hot water temperature is controlled based on the control program stored in the program ROM 30 as shown in the flow chart of FIG. The phase angle control of the hot water temperature will be described based on the above.

First, when the operation of the apparatus is started, the circulation pump 6 starts to operate, and at the same time, power is supplied to the heater 7, and the hot water temperature set by the hot water temperature setting key 26 is stored in the RAM 31.
Is stored.

In this case, since it is necessary to quickly raise the hot water temperature to the set temperature when the operation of the apparatus is started, the heater 7 is programmed so that 100% electric power is supplied without controlling the phase angle. As one step S1, the CPU 28 determines whether or not the hot water temperature detected by the hot water temperature sensor 14 has reached the set temperature T.

If it is determined in the first step S1 that the hot water temperature has reached the set temperature, the CPU 28 performs the second step S2 so that the device is not affected by the heater so that the temperature of the hot water thereafter is maintained by the phase angle control. After confirming that the ON signal capable of supplying electric power to 7 is being output, the phase angle control power supply circuit 23 is set so that the ignition phase angle Px is set to π / 2 in the third step S3. The heater 7 is controlled so that the heater 7 is supplied with an amount of electric power corresponding to the phase angle π / 2.

Although not shown in this flow chart, the CPU 28 also controls the heater power consumption display circuit 24 so that the ignition phase angle Px is set to π / 2. In this case, the amount of power consumption is, for example, as shown in FIG.
The ratio is displayed when it is set to 00%.

Since the control at the phase angle π / 2 is performed only for the control unit time, the CPU 28 functioning as the hot water temperature control signal generating means 16 issues a control start signal, and based on this signal, the fourth step S4. Then, the timer 27 is set to 0 to start measuring the control unit time, and the fifth step S5 is started.
Then, the hot water temperature sensor 14 sends the hot water temperature To detected at this time to the CPU 28 functioning as the hot water temperature rise rate calculating means 17.

The CPU 28 determines whether or not the timer 27, which measures the control unit time in the sixth step S6, has measured that the time A, which is the control unit time, has elapsed. If it is determined that the time has passed, the seventh
In step S7, the hot water temperature Ta detected by the hot water temperature sensor 14 at this time is used by the CPU 28 as the hot water temperature rise rate calculating means 17.
Send to

In this way, when the control unit time A has elapsed and the hot water temperature data as described above is sent to the hot water temperature increase rate calculating means 17 and the hot water temperature difference calculating means 20 as the CPU 28, the CPU 28 determines the eighth. As step S8, the hot water temperature rise rate Ux and the set hot water temperature Ts obtained by dividing the temperature difference Ta-To = Tc between the start point and the end point when the control unit time has elapsed by the time A and the hot water temperature Ta when the control unit time has elapsed The calculation processing of the temperature difference Td is performed.

When the CPU 28 calculates the hot water temperature increase rate Ux and the hot water temperature difference Td in the control unit time A as described above, the calculated Ux is then used as the phase angle setting means 21 and the ninth step S9. And phase angle data corresponding to Td are read from the hot water temperature control data storage ROM 29 as the hot water temperature control phase angle data storage means 22, and the phase angle Px of the next control unit time is set.

After confirming that the ON signal for supplying the electric power to the heater 7 is generated without any abnormality in the apparatus as the 10th step S10, the CPU 28 makes a new phase angle Px as the 11th step S11. The phase angle control power supply circuit 23 is controlled so that the electric power of the amount corresponding to the phase angle Px is supplied to the heater 7.

Of course, when the phase angle for controlling the heater 7 changes to Px in this way, the heater power consumption display circuit 24
Is also controlled to be the phase angle Px, and the heater power consumption display device 25 displays the power consumption amount in this case as a ratio when the maximum power consumption of the heater is 100% as described above. Is displayed.

The heater 7 is controlled to supply electric power while changing the phase angle based on the rate of increase in hot water temperature and the difference in hot water temperature, for example, with the control unit time being about 10 minutes, and heats the hot water to maintain the set temperature. .

[0045]

The present invention has the above-described structure and operation, and is applicable to the case of the phase angle control of the present invention and the conventional ON-O.
A comparison of the relationship between the time in the heat retention state and the power consumption of the heater in the FF control is shown in FIG. 4 as a ratio when the maximum power consumption is 100%.

As is apparent from this figure, in the case of the conventional ON-OFF control shown by the dotted line, the maximum power consumption of 100% is intermittently supplied, but the phase angle of the present invention shown by the solid line is shown. In the case of control, power consumption of about 50% is continuously supplied.

As described above, the power consumption of the heater of the apparatus for purifying bath water according to the present invention is 100% only at the beginning of the operation in which the temperature of the hot water needs to be quickly raised to the set temperature. It will be about 50% after a certain heat retention state.

Therefore, conventionally, when another electric device is connected to another outlet of the wiring path to which the main body of the apparatus is connected, the maximum current when the heater is turned on and the consumption of the connected electric device are connected to the wiring path. Since the total current of the current corresponding to the electric power flows and the overcurrent breaker immediately operates, it is very inconvenient because other electric devices cannot be connected to the same wiring path as the main body of the apparatus.

However, in the device of the present invention, only about 50% of the maximum current flows in the heater in the heat retaining state. Therefore, even if another electric device is connected to the same wiring path as the device body, the overcurrent breaker is connected. Is much less likely to work.

When starting the operation of the apparatus, 100
If the phase angle control is performed to supply about 50 to 60% of electric power without supplying about 50% of electric power, it takes a long time to reach the set temperature, but other electric devices are connected to the same wiring path as the main body of the apparatus. Even if is connected, there is no need to worry about the overcurrent breaker working.

In the device of the present invention, since no mechanical relay contact is provided in the control circuit of the heater, there is no concern that the relay contact will be damaged by corrosion or the like, and the control circuit will not be defective over a long period of time. .

Since a large current is not frequently turned on and off in the device according to the present invention, heat generation and voltage drop due to resistance between the contacts of the outlet and the plug are suppressed, and as a result, useless power consumption is suppressed and at the same time, It prevents the contact point between the outlet and the plug from being deteriorated due to abnormal heat generation and the risk of ignition.

Further, in the present invention, by shortening the control unit time for controlling the phase angle of the heater, it becomes possible to perform very precise temperature control, so that the hot water can be kept stable and the bather can more comfortably take a bath. become.

As described above, according to the present invention, the heater is turned ON-O.
It eliminates many of the drawbacks of the conventional technology that occurs when a large current flows intermittently when FF control is performed, makes it possible to heat hot water safely, with few failures and economically, and to further stabilize the hot water temperature. Provided is a bath water purifying device which can be brought into a state.

[Brief description of drawings]

FIG. 1 is a basic block diagram,

[Fig. 2] Control block diagram,

FIG. 3 is a control flow chart,

FIG. 4 is a temporal change in heater power consumption,

FIG. 5: Heater power consumption display device,

FIG. 6 is a piping diagram of a bath water purifying device.

[Brief description of reference numerals]

 1 Bathtub 2 Hot water 3 Hot water suction pipe 4 Device body 5 Filtration tank 6 Circulation pump 7 Heater 9 Fountain pipe 14 Hot water temperature sensor 15 Control unit time measurement means 17 Hot water temperature rise rate calculation means 23 Phase angle control power supply circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location C02F 1/50 550 D 560 Z // A47K 3/00 K

Claims (2)

[Claims] 1. A hot water in a bathtub is sucked up from a hot water pipe by a circulation pump to be forcedly circulated, and dirt is filtered in a filtration tank in a circulation path, heat is kept by a heater, and sterilization is performed by ozone. An apparatus for purifying bathtub hot water, in which treated hot water is again jetted from a spout tube to a bathtub, wherein electric power is supplied to a heater through a phase angle control power supply circuit. 2. A phase angle control power supply circuit for supplying electric power to a heater is controlled on the basis of a temperature increase rate per control unit time calculated by a temperature increase rate calculating means. The bathtub cleaning device according to claim 1.