JPH09299262A - 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 and a hot water jetting pipe 9 are connected to a device main body 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 the hot water 2 inside a bathtub 1 sucked by the hot water suction pipe 3 is jetted to the bathtub 1 again from the hot water jetting pipe 9 after performing a purification processing by the operation of the circulation pump 6. Also, a boiling water tank 16 for 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 is provided, a water suction pipe 20 equipped with a water suction pump 21 operated based on a hot water temperature detected by a hot water temperature sensor 15 is connected to the bathtub 1 and the hot water jetting pipe 9 is connected to a water discharge pipe 22 respectively and the hot water for which the purification processing is performed is mixed with the boiling water and 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.

[0003] An example of such an apparatus for cleaning bath water is shown in FIG. 6, wherein 1 is a bath tub, 2 is hot water, 3 is a suction pipe for pumping hot water 2 in bath tub 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]

That is, according to the present invention, the inside of the apparatus main body is equipped with a filter tank for pumping hot water from a hot water pipe by a circulation pump to remove dirt and a sterilizer for sterilizing with ozone or ultraviolet rays. In a bathtub hot water purifying device that circulates and purifies and then jets again into the bathtub from the hot water pipe, connect a hot water tank that stores hot water as hot water in order to mix hot water with the device body and adjust the hot water temperature. However, the bath water stored as hot water in the hot water tank is mixed in an appropriate amount according to the temperature of the hot water, and the heating speed is increased, and at the same time, late night electricity, solar heat, kerosene, etc. are used as heat sources to reduce the heating cost. To do.

Further, one end of a water absorption pipe for inflowing the bath water of the hot water tank is connected to the bathtub, and one end of a water discharge pipe for outflowing the hot water is connected to the conduit of the main body of the apparatus. It is configured so that the hot water stored in the hot water tank can be mixed with the hot water in a safe state without directly ejecting the hot water stored in the hot water tank to the bathtub by operating the water absorption pump according to the temperature.

Furthermore, the outlet pipe of the hot water tank and the spout pipe of the main body of the apparatus are connected via a mixer equipped with a flow rate control valve whose valve opens and closes according to the temperature of the hot water so that the hot water temperature can be adjusted accurately. To

[0013]

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 body 4 is provided with the ultraviolet sterilizer 14 as a sterilizer, so that the intake pipe 12 is not shown as in the conventional example, but of course the tip of the spout tube 9 is similar to the conventional example. The jet nozzle 11 connected to the intake pipe 12 is attached so that the user can enjoy the bubble bath.

Reference numeral 15 is a hot water temperature sensor provided in the cleaning pipeline, the hot water temperature sensor 15 constantly detects the temperature of the hot water in the bathtub, and the control device is based on the hot water temperature detected by the hot water temperature sensor 15. The bather is controlled to maintain the set hot water temperature.

Reference numeral 16 denotes 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 which is heated by the heater 19 as described above. 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, one end of which is connected to the water intake port 17 of the hot water tank 16 and the other end of which is connected. Is connected to bathtub 1.

Reference numeral 22 is a water outlet pipe for flowing out the hot water stored in the hot water tank 16. This water outlet pipe 22 has one end connected to the water outlet 18 of the hot water tank 16 and the other end connected to the spouted water pipe 9. Connected.

When only the circulation pump 6 is operated in the apparatus constructed as described above, the hot water 2 in the bathtub 1 is sucked from the hot water suction pipe 3 and is subjected to cleaning treatment such as filtration and sterilization in the apparatus main body 4. Then, it squirts again into the bathtub 1 through the spout tube 9.

Next, the circulation pump 6 and the water absorption pump 21 at the same time.
When the hot water is activated, 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 from the water suction pipe 20 and flows into the hot water tank 16 through the water suction port 17.

The bathtub 1 flowing from the hot water pipe 3 into the apparatus main body 4
The hot water 2 in the inside is, of course, cleaned and flows out to the spout pipe 9, but when the hot water 2 in the bathtub 1 flows into the hot water tank 16, the hot water stored at, for example, about 80 ° C. exits through the water outlet 18. It is pushed out by the same amount as the hot water flowing into the water pipe 22 and flows into the spout pipe 9.

As a result, the hot water that has been cleaned by the apparatus body 4 is mixed with the hot water that has flowed out of the hot water tank 16 by the hot water pipe 9 and heated before it is jetted into the bath 1.

When hot water is mixed with the hot water that has been cleaned by the hot water pipe 9 as described above, it is safe because hot water does not directly spout into the bathtub 1.

FIG. 2 shows a second embodiment of the present invention as a piping diagram. In this second embodiment, a water outlet pipe 22 from a hot water tank 16 is connected to a hot water pipe 9 via a mixer 23. The other configurations are exactly the same as those of the first embodiment.

As the mixer 23, a motor drive type that opens and closes the flow rate control valve based on the drive by the control motor, or a flow rate control valve based on expansion and contraction according to the hot water temperature of the wax as the thermoelement. A thermostat type that opens and closes is used, and the hot water is mixed with an appropriate amount of hot water according to the temperature so that the temperature can be accurately controlled.

Particularly, when a thermostat type mixer is used, the apparatus is simple and the temperature can be accurately controlled according to the temperature of the hot water, which is convenient. Therefore, referring to FIG. 3, the thermostat type mixer 24 is used to heat the hot water. Will be explained.

The thermostatic 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 is 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 temperature of the hot water to open and close the valve hole 30 with the valve 29. is there.

First, when the operation of the apparatus is started, the hot water temperature is naturally lower than the set temperature, so that the water suction pump 21 is operated together with the circulation pump 6, and at the same time, the thermostatic mixer 24 is operated.
(A), the flow rate control valve 28 is pushed upward by a pressing spring (not shown) to open the valve 29.

Therefore, in the thermostat mixer 24, the purified hot water flows in from the hot water inlet 25, and at the same time, the hot water stored in the hot water tank 16 flows in from the hot water inlet 26 and both are mixed and cleaned. The treated hot water is heated, flows out from the hot water outlet 27, and is jetted from the hot water pipe 9 to the bath 1.

When the hot water thus purified is continuously mixed with hot water and kept heated, the flow rate control valve 28 keeps lowering because the temperature of the wax rises and the volume expands, so that the temperature of the hot water is set. When the temperature reaches a certain value, the valve is closed as shown in FIG.

Of course, when the valve is closed, the hot water does not flow from the hot water inlet 26, and the purified hot water flows out from the thermostatic mixer 24 without being heated by the hot water.
When the temperature of the hot water decreases, the volume of the wax in the flow rate control valve 28 contracts and moves upward, opening the valve and allowing the hot water to flow in again.

In the thermostat mixer 24, the opening amount of the flow rate control valve 28 is adjusted according to the hot water temperature, so that the hot water inflow amount is adjusted according to the hot water temperature, so that the hot water can be heated accurately.

The control of the apparatus configured as described above will be described below with reference to the control block diagram of FIG. 4 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 denotes 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 escaped from 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 denotes a flow rate control valve drive circuit, which is a circuit for driving the flow rate control valve when the mixer 23 is a motor drive type which opens and closes the flow rate control valve based on the drive by the control motor. Needless to say, when the device 23 is a thermostat type.

In the device thus constructed, the control device 35 firstly performs 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 23 is a motor driven type, the flow rate is set in the fifth step S5. The control valve is opened according to the hot water temperature so that the hot water flows into the mixer 23.

Of course, 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 absorption pump 21 is stopped in the sixth step S6, and at the same time, the flow rate control valve is closed in the seventh step S7. Make sure that hot water does not flow into the vessel 23.

By such control by the control device 35, the hot water 2 in the bath tub 1 is cleaned by the device main body 4, and the hot water stored in the hot water tank 16 is mixed and heated in the middle of the hot water pipe 9. It will be maintained at the set temperature.

[0046]

The present invention is constructed as described above, and the bath water which has been cleaned by the apparatus body is heated by mixing the bath water previously stored as hot water in the hot water tank in the middle of the spout tube. It

In this way, when the hot water mixing type heating method is used in the middle of the pipeline, the hot water can be rapidly heated to the set temperature in a safe state where the hot water does not directly spout into the bathtub, and at the same time, it is an inexpensive heating source. The heating cost will be cheaper because the electric power, solar heat, kerosene, etc. will be available at midnight.

Further, when the hot water is mixed with the purified hot water while using the mixer in which the 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 a piping diagram of the first embodiment,

FIG. 2 is a piping diagram of the second embodiment,

[Fig. 3] Thermostatic mixer,

FIG. 4 is a control block diagram,

FIG. 5 is a flow chart,

FIG. 6 is a piping diagram of a conventional example.

[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 Mixer 24 Thermostat type mixer

Claims (4)

[Claims] 1. A hot water pipe after a cleaning treatment by forcibly circulating the inside of the device body equipped with a filtration tank for pumping hot water from a hot water pipe by a circulation pump to remove dirt and a sterilizing device for sterilizing with ozone or ultraviolet rays. In the apparatus for purifying bathtub hot water to be jetted out again from the bathtub, a hot water tank for storing hot water as hot water is connected to the apparatus body to adjust the hot water temperature, and the hot water tank is connected and arranged. Cleaner for bath water. 2. A hot water tank has one end connected to a lower water intake port, and a water absorption pipe for inflowing hot water from a bath is provided with a water absorption pump, while the other end is connected to the bath and one end is connected to an upper water discharge port. The bath water purifying apparatus according to claim 1, wherein a water discharge pipe for flowing out the hot water is provided by connecting the other end to a pipe line of the apparatus body. 3. The apparatus for cleaning bathtub hot water according to claim 2, wherein the water suction pump provided in the water suction pipe operates according to the hot water temperature detected by the hot water temperature sensor. 4. The water discharge pipe of the hot water tank and the spout water pipe of the apparatus main body are connected via a mixer provided with a flow rate control valve that opens and closes according to the temperature of the hot water. Bath water purification device.