JPH09299265A - Purifier for bathtub hot water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a purifier for heating bathtub hot water by rapid and precise temperature control at a low cost in the safe state of not directly jetting boiling water to a bathtub. SOLUTION: A hot water suction pipe 3 for sucking hot water 2 from a bathtub 1 and a hot water jetting pipe for jetting the hot water for which a purification processing is ended again to the bathtub 1 are connected and a device main body 4 for which purification processors such as a filtering tank 5, a circulation pump 6 and an ultraviolet sterilization device 14, etc., are disposed altogether and a boiling water tank 16 for connecting a water suction pipe 20 equipped with a water suction pump 21 and a water discharge pipe 22, heating the hot water 2 inside the bathtub 1 by an inexpensive heat source such as late-night power, solar energy and kerosene, etc., and storing it as boiling water are provided together for the bathtub 1. Then, the water suction pipe 20 is connected to the water discharge pipe 22 through a mixer 24 by a bypass pipe 23, the water suction pump 21 is operated, the appropriate amount of the boiling water of the boiling water tank 16 is discharged to the bathtub 1 corresponding to a hot water temperature and the hot water 2 inside the bathtub 1 is heated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath apparatus, and more particularly to a bath apparatus, in which hot water in a bath tub is forcibly circulated, while filtering, sterilizing, and other cleaning treatments are performed, and at the same time, the bath temperature is maintained at a bath temperature. The present invention relates to a so-called 24-hour bath apparatus in which the user can take a bath at any time for 24 hours.

[0002]

2. Description of the Related Art Recently, a bathtub hot water purifying apparatus, that is, a 24-hour bath, which constantly keeps hot water in a bathtub clean and at an appropriate temperature, enables comfortable bathing for 24 hours, and saves water, has been actively used. It has become.

One example of such a bathtub hot water purifier is shown in FIG. 5, wherein 1 is a bathtub, 2 is hot water, 3 is a water suction pipe for pumping hot water 2 in bathtub 1, and 4 is a hot water suction pipe. An apparatus main body in which devices for cleaning the hot water pumped up by the water suction pipe 3 are collectively provided, and 9 is a fountain pipe for ejecting the hot water treated by the apparatus main body 4 into the bathtub 1 again. .

In order to remove dirt from the bath water, a filter tank 5 containing various types of granular filter media such as activated carbon, activated stones, and porous ceramic balls, and a fibrous filter is used. A circulation pump 6 for forcibly circulating hot water, an electric heater 7 for keeping the temperature of the hot water at an appropriate temperature, and an ozonizer 8 as an ozone sterilizer for the hot water.
Etc. are provided.

Numeral 10 is a prefilter attached to the tip of the hot water pipe 3 for removing large dirt in advance 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. Intake pipe 1 ejected to the
Reference numeral 2 is a jet nozzle connected to the ejector section.

A solenoid valve 13 for opening and closing a pipe is provided at the end of an intake pipe 12 connected to an ejector portion of the jet nozzle 11, and an ozonizer 8 is provided on the way. When the solenoid valve 13 is opened, the jet nozzle 11 is opened. Air is sucked in from the suction pipe 12 by the suction force of the air, this air is mixed into the hot water in the ejector section 24, and a jet flow is jetted out of the jet nozzle 11 into the bathtub 1 to form a bubble bath. The air sucked into 12 is ozonized and jetted into the bathtub 1 to sterilize the hot water 2 with ozone.

[0007]

However, in the apparatus configured as described above, since the hot water is heated by the electric heater, the running cost is increased, and the capacity of the electric heater is 800 W in relation to the wiring capacity. The heating capacity is insufficient to heat 200 liters of bath water, so that the heating speed becomes slow.

As a result, it is difficult to raise the temperature of the hot water during bathing, and it is difficult to increase the temperature when the hot water is replaced or when the operation of the apparatus has been stopped for a long time. Takes a very long time to heat the hot water to the bathing temperature.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bathtub hot water purifying apparatus which solves the above-mentioned drawbacks of the prior art, reduces heating costs, and can rapidly heat hot water to a bathing temperature. .

[0010]

[Means for Solving the Problems] That is, the present invention is directed to a filtration tank for purifying bath water from a hot water pipe by means of a circulation pump for cleaning and removing contaminants ejected from the hot water pipe to the bath again, ozone, ultraviolet rays or the like. The main body of the equipment is equipped with cleaning equipment such as a sterilizer that sterilizes the water in the bathtub, and the bathtub hot water is sucked in from the water suction pipe by the water suction pump and stored as hot water. A hot water tank and a hot water tank are provided side by side, and a water absorption pipe connected to the hot water tank is connected to a water discharge pipe by a bypass pipe bypassing the hot water tank via a mixer, and the hot water tank stores hot water as hot water. Depending on the temperature of the hot water, a suitable amount of hot water is mixed in a safe state where it does not directly spout into the bathtub through a mixer installed in the outlet pipe, and the heating speed is increased and at the same time midnight power, solar heat, kerosene The make up so that it can be cheaper heating costs by using as a heat source.

The water suction pipe of the hot water tank is connected to the water discharge pipe by a bypass pipe via a mixer provided with a flow rate control valve whose valve opens and closes according to the hot water temperature. By operating according to the hot water temperature detected by the temperature sensor, the hot water temperature can be adjusted quickly and accurately.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described based on the piping diagram of the first embodiment of FIG. 1. The same components as those of the conventional example are designated by the same reference numerals. is there.

In this embodiment, the apparatus main body 4 is provided with an ultraviolet sterilizer 14 as a sterilizer, so that the suction pipe 12 is not shown as in the conventional example. A jet nozzle 11 with an intake pipe 12 connected thereto is attached to enjoy a bubble bath.

Reference numeral 15 is a hot water temperature sensor provided in the apparatus body 4, the hot water temperature sensor 15 constantly detects the temperature of the hot water in the bathtub, and the controller takes a bath based on the hot water temperature detected by the hot water temperature sensor 15. The person controls to maintain the set hot water temperature.

Reference numeral 16 is a hot water tank for storing the bath water 2 as hot water. The hot water tank 16 has a water inlet 17 for sucking the bath water 2 on the lower surface and a water outlet 18 for discharging the hot water on the upper surface. Each of them is equipped with one hot water tank
Since 6 is of an electric heating type, a heater 19 as a heat source for heating the stored hot water is provided in the lower portion.

The hot water in the hot water tank 16 can be heated by a solar heating type, a kerosene heating type, or a combination heating type thereof in addition to the electric heating type heated by the heater 19 as described above. Of course, in the case of an electric heating type. In order to use electricity, late night electricity with low electricity cost should be used as much as possible.

Reference numeral 20 denotes a water absorption pipe for sucking the bath water 2 into the hot water tank 16. The water absorption pipe 20 is provided with a water absorption pump 21 in the middle thereof, and 22 denotes the hot water stored in the hot water tank 16 in the bath 1. It is a water outlet pipe for outflow.

Reference numeral 23 is a bypass pipe which connects the hot water 2 in the bathtub 1 sucked from the water suction pipe 20 so as to bypass the hot water tank 16 and flow into the water discharge pipe 22. The bypass pipe 23 is a water discharge pipe. 22 is connected via a mixer 24.

Therefore, when the hot water 2 is sucked into the water suction pipe 20 from the bathtub 1 by the operation of the water suction pump 21, a part of the sucked hot water flows toward the bypass pipe 23 and the rest flows toward the hot water tank 16.

Therefore, the hot water tank 16 produces hot water in an amount not including the hot water flowing toward the bypass pipe 23.
After being mixed with the hot water flowing toward the bypass pipe 23 in the mixing 24, it is discharged into the bathtub 1 and the hot water does not directly spout into the bathtub 1 and becomes a safe state.

Therefore, if a flow rate control valve for opening and closing the mixer 24 according to the hot water temperature is provided, the hot water temperature can be accurately adjusted by adjusting the amount of hot water flowing out of the hot water tank 16 according to the hot water temperature. At the same time, if hot water is about to flow out directly toward the bathtub 1, the valve is immediately closed to stop the flow of hot water out of the hot water tank, so that safety can be ensured.

The mixer 24, whose flow rate control valve opens and closes depending on the temperature of the hot water, is a motor drive type that opens and closes the flow rate control valve based on the drive of a control motor, or the temperature of the wax as a thermoelement. A thermostat type that opens and closes the flow control valve based on expansion and contraction is considered.

Particularly when a thermostat type mixer is used, the apparatus is simple and the temperature can be controlled accurately according to the temperature of the hot water, which is convenient. Therefore, referring to FIG. 2, the thermostat type mixer 24 is used to heat the hot water. The state will be described.

The thermostat type mixer 24 is provided with a hot water inlet 25, a hot water inlet 26 and a hot water outlet 27, and the hot water inlet 26 has a water outlet pipe 22 from the hot water tank 16.
The spout tube 9 is connected to the hot water inlet 25 and the hot water outlet 27.

Reference numeral 28 denotes a thermostat type flow control valve in which wax as a thermoelement is filled and the piston moves up and down based on expansion or contraction of the volume of the wax according to the hot water temperature and the valve 29 opens and closes the valve hole 30. is there.

First, when the operation of the apparatus is started, since the hot water temperature is naturally lower than the set temperature, the water absorption pump 21 is operated together with the circulation pump 6, and at the same time, the mixer 24, as shown in FIG. The flow rate control valve 28 is pushed upward by a pressing spring (not shown), and the valve 29 is open.

Therefore, in the mixer 24, the hot water inlet 25
Into the hot water inlet port 26, a part of the hot water flowing in the bypass pipe 23 of the hot water 2 in the bathtub 1 flows into, and the hot water inlet 26 is sucked into the hot water inlet pipe 20 toward the hot water tank 16 direction. For example, the hot water that has been stored at 80 ° C. and flows out into the hot water tank 16 of the same amount as the hot water that has flowed into the water flows into the hot water tank 16.

When the hot water 2 in the bath tub 1 is continuously heated by mixing the hot water in this way, the flow rate control valve 28 keeps lowering because the temperature of the wax rises and the volume expands, and the temperature of the hot water is set. When the temperature reaches the set temperature, the valve is closed as shown in FIG.

Then, all the hot water 2 in the bathtub 1 sucked into the water suction pipe 20 flows in the direction of the bypass pipe 23 and the hot water tank 1
Since the water does not flow in the 6 directions at all, naturally, no hot water flows out of the hot water tank 16.

Therefore, the hot water 2 in the bathtub 1 sucked into the water suction pipe 20 enters the mixer 23 through the bypass pipe 23, and then is discharged into the bathtub 1 through the water discharge pipe 22 without being mixed with the hot water. The hot water 2 in the bathtub 1 is not heated by the hot water at all.

When the bypass pipe 23 is clogged and all the hot water sucked into the water suction pipe 20 flows toward the hot water tank 16 regardless of the hot water temperature, it is stored in the hot water tank 16 from the mixer 23. It is dangerous that the hot water flows out as it is and is discharged to the bathtub 1 through the water discharge pipe 22.

However, in this case, the flow rate control valve 28 immediately expands the wax and lowers the flow rate control valve 28 to close the valve, so that the hot water from the hot water tank 16 immediately stops flowing and the hot water directly flows into the bathtub 1. It is in a safe state without discharging.

Therefore, in the apparatus constructed as described above, when only the circulation pump 6 is operated, the hot water 2 in the bathtub 1 is sucked from the hot water pipe 3 and the apparatus main body 4 is subjected to a cleaning process such as filtration and sterilization. Is performed, and the bathtub 1 is passed through the spout tube 9 again.
Gushes into.

Next, when the temperature of the hot water is lowered, the water absorption pump 21 is operated so that the hot water 2 in the bathtub 1 is sucked from the hot water suction pipe 3 and flows into the apparatus main body 4, and at the same time, is also sucked into the water suction pipe 20. Become.

The hot water sucked into the water suction pipe 20 is mixed with the mixer 24.
Of the bypass pipe 2 according to the opening degree of the flow control valve 28
The hot water tank 16 is supplied to the hot water flowing in the bypass pipe 23 direction in the mixer 24 in three directions and the hot water tank 16 direction.
The hot water that has flowed in the same direction and the hot water stored in the hot water tank 16 in the same amount as the hot water are newly formed to form the water discharge pipe 22.
After that, it is discharged into the bath 1 to heat the hot water 2.

At this time, since the opening degree of the flow rate control valve 28 of the mixer 24 changes depending on the hot water temperature, the hot water of the hot water tank 16 will flow out in an amount corresponding to the hot water temperature, and the hot water in the bathtub 2 will be discharged. The hot water 2 is heated with precise temperature control by hot water discharged at a temperature according to the hot water temperature.

Control of the apparatus configured as described above will be described below with reference to the control block diagram of FIG. 3 and the flowchart of FIG.

Reference numeral 31 denotes a key input device. The key input device 31 is provided with various keys for setting operating conditions of the device, including a start / stop key for operating or stopping the device. A hot water temperature setting key 32 for setting the hot water temperature is also provided.

Reference numeral 15 is a hot water temperature sensor provided to detect the temperature of the hot water for controlling the hot water temperature, and in order to ensure the safety of the apparatus, the circulation pump 6 detects that water has come out of the pipeline. A differential pressure sensor 33 for detecting the pressure difference between the water absorption side and the discharge side, and a fall sensor 3 for detecting the fall of the device.
4 are also deployed.

Reference numeral 35 is a control device for controlling the entire apparatus. The control device 35 is a CPU 36 as a central processing unit, a ROM 37 as a storage device for storing various control data including a control program, It is a microcomputer including a RAM 38 as a temporary storage device for data for arithmetic processing.

Reference numeral 39 is a circulation pump drive circuit for driving the circulation pump 6, and 40 is a hot water tank heater drive circuit for supplying electric power to the hot water tank heater 19 when the hot water tank 16 is electrically heated.

Reference numeral 41 is a water absorption pump drive circuit for driving the water absorption pump 21, and 42 is a display device drive circuit.
It is a circuit for displaying the operating states of various devices including the hot water temperature on the display device 43.

Reference numeral 44 is a flow control valve drive circuit, which is a circuit for driving the flow control valve when the mixer 24 is a motor drive type which opens and closes the flow control valve based on the drive by the control motor. Of course, it is not necessary when the device 24 is a thermostat type.

In the device thus constructed, the control device 35 firstly operates the key input device 3 in the first step S1.
If it is determined that the operation is started, the operation of the circulation pump 6 is started in the second step S2, and the hot water temperature sensor 15 detects it in the third step S3. It is determined whether the hot water temperature is lower than the hot water temperature set by the hot water temperature setting key 32.

When it is determined that the hot water temperature is lower than the set hot water temperature, the operation of the water absorption pump 21 is started in the fourth step S4, and when the mixer 24 is a motor drive type, the flow rate is set in the fifth step S5. The control valve is opened according to the hot water temperature so that hot water according to the hot water temperature flows from the hot water tank 16 into the mixer 24.

When it is determined in the third step S3 that the hot water temperature is equal to or higher than the set temperature, the operation of the water suction pump 21 is stopped in the sixth step S6, and at the same time, the seventh step S7.
The flow rate control valve is also closed so that the hot water flowing out of the hot water tank 16 does not flow into the mixer 24.

By such control by the control device 35, the hot water 2 in the bathtub 1 is sucked from the hot water pipe 3 and after being cleaned by the main body 4 of the device, jetted again to the bathtub 1 from the hot water pipe 9. The hot water that has been cleaned and simultaneously sucked from the water suction pipe 20 and stored in the hot water tank 16 is mixed in an appropriate amount according to the temperature of the hot water and heated by the newly formed hot water discharged from the water discharge pipe 22 to maintain the set temperature. You will be drunk.

[0048]

The present invention is configured as described above, and the hot water previously stored in the hot water tank can be discharged in a safe state in which the hot water does not directly jet into the bathtub, and the hot water can be rapidly heated to the set temperature. At the same time, cheap night power, solar heat, kerosene, etc. can be used as a heating source, so the heating cost can be reduced.

Further, since the hot water stored in the hot water tank flows out in an appropriate amount according to the hot water temperature by the mixer whose flow rate control valve opens and closes according to the hot water temperature, the hot water temperature can be adjusted more accurately.

[Brief description of drawings]

FIG. 1 is an example piping diagram,

[Fig. 2] Thermostatic mixer,

FIG. 3 is a control block diagram,

FIG. 4 is a flow chart,

FIG. 5 is a conventional piping diagram.

[Explanation of symbols]

 1 Bathtub 2 Hot water 3 Hot water pipe 4 Device body 5 Filtration tank 6 Circulation pump 9 Fountain pipe 14 UV sterilizer 15 Hot water temperature sensor 16 Hot water tank 20 Water absorption pipe 21 Water absorption pump 22 Water discharge pipe 23 By-pass pipe 24 Mixer

Claims (3)

[Claims] 1. A filter tank for purifying bathtub hot water from a hot water pipe by a circulation pump for cleaning and removing contaminants ejected from the hot water pipe to the bathtub again, and a sterilizer for sterilizing with ozone or ultraviolet rays. The main body of the equipment equipped with the treatment equipment and the hot water tank that sucks in the hot water from the water absorption pipe by the water absorption pump and stores it as hot water and discharges the hot water from the water discharge pipe to the bathtub according to the temperature of the hot water to heat the hot water The apparatus for cleaning bathtub hot water is characterized in that the water suction pipe connected to the hot water tank is connected to the water discharge pipe by a bypass pipe bypassing the hot water tank via a mixer. 2. The water suction pipe of the hot water tank is connected to the water discharge pipe by a bypass pipe through a mixer provided with a flow rate control valve that opens and closes according to the hot water temperature. Cleaner for bath water. 3. The apparatus for cleaning bathtub hot water according to claim 1 or 2, wherein the water suction pump provided in the water suction pipe operates in accordance with the hot water temperature detected by the hot water temperature sensor.