JPH05261380A - Sterilizing and cleaning apparatus of bath water - Google Patents

Abstract

(57) [Abstract] [Purpose] A bath water purifier with a sterilizer that is simple and can be effectively sterilized without causing any harm to the human body. [Composition] A gas-liquid mixer 6, an ultraviolet sterilizer 7, and a gas-liquid separator 11 are sequentially arranged in series in a hot water circulation path from upstream to downstream, and the gas-liquid mixer 6 is supplied with air as an air supply pipe. The air pipe 19 for supplying the air and the separation air pipe 21 for supplying the air separated by the gas-liquid separator are connected to each other, and the air conduit for the gas-liquid mixer 6 is set to a large size according to the separation amount of the separation air and the oxygen concentration. Switch to the trachea 19 and the separation air pipe 21. [Effect] Hot water is effectively sterilized by the sterilizing power of ultraviolet rays and the ozone sterilizing power of the mixed oxygen in the air being converted into ozone by the ultraviolet rays. The exhaust gas from the separator contains almost no ozone and is harmless.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing and purifying apparatus for bath water, and more particularly to a sterilizing apparatus for this apparatus.

[0002]

2. Description of the Related Art Bath water that is forcibly circulated in a bathtub by using a circulation pump, and after the dirt in the bathwater is removed by a filtration device provided in the circulation path, the bathwater is activated in an activated stone tank. The purifying device has been conventionally developed.

More recently, in addition to simply removing or activating dirt in hot water, it is heated by a heater to always maintain an appropriate temperature so that the user can take a bath at any time for 24 hours.

In this case, it is needless to say that the hot water must be kept clean at all times, but sterilization is also necessary in order to prevent generation of a bad odor.

In the past, sterilization of hot water was conventionally carried out by chlorine sterilization with chemicals, but recently, a small high-pressure discharge type ozone generator, so-called ozonizer, was developed.
Most of the ozone sterilization is a simple device using an ozonizer.

In ozone sterilization using an ozonizer, an air supply pipe provided with an ozonizer on the way is connected near the jet outlet of a bath of hot water after cleaning, and the air supplied from this air supply pipe is connected. It is carried out by mixing it with hot water that is circulated by ozone.

[0007]

However, when ozone sterilization is performed as described above, hot water containing unreacted ozone is ejected into the bathtub, and as a result, the bather is discharged from the hot water in the bathtub. Since it will inhale ozone, it is possible to smell unpleasant odors and to worry about health problems.

In order to remove the harm of ozone released from the hot water in the bathtub, unreacted ozone is recovered from the hot water before it enters the bathtub, and the recovered ozone is decomposed by a decomposing device to be harmless. Although it must be vented, ozone is not easily decomposed due to its humidity, which requires fairly large and expensive equipment to complete it.

The present invention solves the above-mentioned drawbacks of the prior art, and provides a cleaning device having a simple sterilizing / purifying device for bath water without any fear of harm due to unreacted ozone. To aim.

[0010]

That is, the present invention is directed to a bathtub hot water purifying device for cleaning hot water in a bathtub by forcibly circulating the hot water in a bathtub through a circulation path provided with various cleaning devices. In the hot water circulation path, a gas-liquid mixer, an ultraviolet sterilizer, and a gas-liquid separator are sequentially arranged in series from upstream to downstream, and the atmosphere is supplied to the gas-liquid mixer as an air supply line. The trachea and the separation air pipe for supplying the air separated by the gas-liquid separator are connected, preferably the separation air pipe is connected to the gas-liquid mixer through the ultraviolet sterilizer, and more preferably the gas-liquid. Sterilization of bath water characterized in that the air supply line for supplying air to the mixer can be switched between an atmosphere pipe and a separation air pipe according to the separation amount of the air separated by the gas-liquid separator and the oxygen concentration. It is a purification device.

[0011]

The present invention is constructed as described above, and the hot water is sterilized by the ultraviolet sterilizer and the oxygen in the air mixed in the hot water by the gas-liquid mixer is ozoned by the ultraviolet light. It is effectively sterilized by the ozone sterilization effect.

When the air mixed in the hot water is ozoned by the ultraviolet rays, unreacted ozone remains in the hot water.
Since the air containing the unreacted ozone is separated by the gas-liquid separator, the hot water jetted into the bath does not contain unreacted ozone.

When a predetermined amount of air containing unreacted ozone separated by the gas-liquid separator is accumulated, a supply line for the air mixed into the hot water via the gas-liquid mixer is changed from the atmosphere pipe to the separated air intake pipe. After switching, the air containing the unreacted ozone accumulated in the gas-liquid separator is sucked into the hot water.

As a result, the hot water is newly generated by ultraviolet ray sterilization and the unreacted ozone and the mixed air remaining in the separated air separated by the gas-liquid separator mixed in the hot water are irradiated with ultraviolet light. Sterilized by ozone sterilization with ozone.

When the air containing unreacted ozone recovered by the gas-liquid separator is mixed into the hot water through the separation air pipe, the separated air contains almost no oxygen which is ozonized by irradiation of ultraviolet rays. Continue until.

Therefore, if the air separated by the gas-liquid separator contains almost no oxygen, that is, the ozone is not contained in the air, the gas-liquid separator is exhausted, and the air containing no ozone is completely removed. Since it is exhausted, it is harmless even if exhausted to any place.

After the air separated by the gas-liquid separator is exhausted in a state where it contains almost no oxygen, the atmosphere is switched from the atmosphere pipe to the hot water through the gas-liquid mixer.

As described above, the bath water is effectively sterilized by the combined use of ultraviolet rays and ozone, and the mixed air containing unreacted ozone is separated into gas and liquid, so that ozone is ejected into the bath. In addition, since the separated air containing unreacted ozone is circulated and exhausted after it becomes a state containing almost no ozone, it does not need to be equipped with an ozone decomposing device. There is no risk of air being exhausted to the outside.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described first with reference to FIG.

Reference numeral 1 is a hot water pipe connected to a bath (not shown), 2 is a filtration device connected to the hot water pipe 1 and loaded with a filter 3, and 4 is a circulation for forcibly circulating hot water. Pumps 5 are heaters for heating the hot water to an appropriate temperature.

Reference numeral 6 denotes a gas-liquid mixer for mixing air into the circulating hot water. As the gas-liquid mixer 6, for example, the flow passage of the hot water is narrowed to accelerate the flow velocity of the hot water by the Bench-Yuri effect. A self-priming gas-liquid mixer that sucks air into the hot water as pressure is used.

Reference numeral 7 is an ultraviolet sterilizer. In this ultraviolet sterilizer 7, an ozone tube 8 for emitting ultraviolet rays having wavelengths of 184.9 nm and 253.7 nm is covered with a quartz glass tube 9 and separated from the hot water passage 10. Therefore, the ozone pipe 8 is prevented from coming into direct contact with hot water and being contaminated.

The ultraviolet sterilizer 7 has a sterilizing action by the energy of the ultraviolet light itself, and has the following chemical formula 1.
And ozone generation and decomposition reactions by ultraviolet rays of respective wavelengths as shown in 2 and 2.

[0024]

[Chemical 1]

[0025]

[Chemical 2]

First, when oxygen in the air mixed in hot water is irradiated with ultraviolet rays having a wavelength of 184.9 nm, the oxygen molecule is first dissociated into two ground state oxygen atoms as shown in the above chemical formula 1. Then, in the presence of the third substance (coexisting gas), the dissociated oxygen atoms react with oxygen molecules to generate ozone, and the ozone acts as a sterilizing action of the hot water.

Next, when the ozone is irradiated with ultraviolet rays having a wavelength of 253.7 nm, the ozone is dissociated into oxygen molecules and oxygen atoms in the ground state, as shown in the above chemical formula 2, and the oxygen atoms are converted into ozone. As a result of the reaction, two oxygen molecules are generated, whereby ozone is decomposed into harmless oxygen, and the oxygen atom generated by this ozone decomposition reaction is also active, so that the water has a sterilizing and purifying action.

Reference numeral 11 denotes an activated stone tank filled with activated stone 12 for activating hot water. This activated stone tank 11 is
When the hot water flows through the filled activated stones 12, resistance is given and the flow of the hot water is temporarily stopped, so that it also functions as a gas-liquid separator for separating the air in the hot water.

The gas-liquid separator may be any device as long as it is a device in which the flow of hot water temporarily stagnates so as to give sufficient time to separate the gas mixed in the hot water, and of course. Although a dedicated device may be provided, an active tank filled with activated stone, an activated carbon tank filled with activated carbon, a treatment tank filled with other fillers, or the like may also be used.

Reference numerals 14, 15, 16, 17, and 18 denote connecting pipes for connecting the above-mentioned devices for treating hot water to each other and arranging them in series. Reference numeral 13 denotes the treated hot water jetted into a bathtub. It is a fountain tube.

Reference numeral 19 is an atmosphere pipe provided with a solenoid valve 20 on the way of supplying the atmosphere to the gas-liquid mixer 6, and reference numeral 21 is a gas-liquid separation air accumulated in the upper part of the activated stone tank 11 as a gas-liquid separator. It is a separation air pipe in which a solenoid valve 22 is provided on the way to the mixer 6.

Reference numeral 23 is an upper float switch 24 for detecting the upper water level A of the dotted line and a lower float switch 24 for detecting the lower water level B of the solid line in order to detect the accumulation state of the separated air in the activated stone tank 11 and the exhaust state by the water level. 25 is a water level detector, and 26 is a separation air exhaust pipe in which a solenoid valve 27 is arranged in the middle of exhausting the separation air.

The process of sterilizing and purifying hot water using the apparatus constructed as described above is performed as follows.

The hot water in the bathtub drawn up from the hot water suction pipe 1 by the operation of the circulation pump 4 is first cleaned by the filter 3 of the filtration device 2 to remove dirt, and then heated by the heater 5 to an appropriate temperature.

After that, air is mixed into the hot water from the gas-liquid mixer 6, but first, the solenoid valve 20 is opened and the solenoid valve 22 is opened.
And 27 are closed and the atmosphere is supplied from the atmosphere pipe 19.

The hot water mixed with air then enters the ultraviolet sterilizer 7 and flows through the hot water passage 10 while being irradiated with ultraviolet rays by the ozone lamp 8.

At this time, the hot water is sterilized by the energy of the ultraviolet rays themselves, and as described above, the oxygen molecules in the hot water are ozoned by the ultraviolet rays having a wavelength of 184.9 nm.
It is also sterilized by the ozone generated here.

Furthermore, the unreacted ozone in the hot water has a wavelength of 25
Oxygen atoms generated when decomposed into harmless oxygen molecules by 3.7 nm ultraviolet rays sterilize and decompose inorganic substances such as iron and organic substances secreted from the human body.

As described above, the hot water is extremely effectively sterilized by the sterilizer 7, and the generated ozone is decomposed, so that the unreacted ozone remains in the hot water.

Finally, the sterilized hot water enters the activated stone tank 11 which also serves as a gas-liquid separator, is activated by the activated stone 12, and is jetted again into the bathtub through the spout tube 13.

When the hot water is activated in the activated stone tank 11, the flow of the hot water temporarily stagnates due to the resistance of the activated stone 12, and the air mixed in the hot water volatilizes during the stagnant time. Then, gas-liquid separation is performed, and the hot water flowing out to the spout tube 13 contains almost no air containing unreacted ozone.

The gas-liquid separated air accumulates in the upper part of the activated stone tank 11 as the gas-liquid separation progresses, and pushes down the water level until it reaches the lower water level B shown by the solid line.

When the water level of the activated stone tank 11 reaches the lower water level B, the lower float switch 25 of the water level detector 23 detects this, and the solenoid valve 20 is closed and the solenoid valve 22 is opened, while the solenoid valve 27 remains closed. And

When the open / closed state of each solenoid valve becomes like this,
The supply of air to the gas-liquid mixer 6 is switched from the atmosphere pipe 19 to the separation air pipe 21, and the separation air is mixed in the hot water.
Ultraviolet ray sterilizer 7 for hot water mixed with air as described above
Is performed.

In the treatment in which the separated air is mixed into the hot water as described above, oxygen is consumed due to ozonization by ultraviolet rays,
It is continued until there is almost no oxygen required for ozonization in the separated air, and whether oxygen is not contained in the separated air is determined by directly measuring the oxygen concentration in the separated air or by the processing time obtained in advance by experiments. To do.

When the separated air contains almost no oxygen, the solenoid valve 22 is closed and the solenoid valve 27 is opened, and the solenoid valve 19 is kept closed to separate the separated air from the separated air exhaust pipe 2.
Exhaust from 6.

When the separated air is exhausted, the activated stone tank 11
When the upper float switch 24 of the water level detector 23 detects that the water pressure inside has decreased and the water level has risen to reach the upper water level A shown by the dotted line, the electromagnetic valve 27 is closed to stop the exhaust and the electromagnetic valve Open 20 and supply the atmosphere from the atmosphere pipe 19 to the gas-liquid mixer 6 to mix air into the hot water,
The hot water containing air is treated again by the ultraviolet sterilizer 7.

As described above, the solenoid valve 20 provided in the atmosphere pipe 19 and the solenoid valve 22 provided in the separation air pipe 21 are opened / closed in accordance with the oxygen concentration in the separation air to the gas-liquid mixer 6. If the treatment is performed while switching the air supply pipeline, the harmless air containing almost no unreacted ozone can be discharged from the activated stone tank 11 that also serves as a gas-liquid separator.

Next, a second embodiment will be described with reference to FIG.

The basic structure of the second embodiment is exactly the same as that of the first embodiment, and the activated stone tank 11 as a gas-liquid separator is used.
The method of piping the separation air pipe for supplying the separation air separated by gas-liquid separation to the gas-liquid mixer 6 is different from that of the first embodiment.

That is, in the first embodiment, the separation air pipe 21
Was directly connected to the gas-liquid mixer 6 from the activated stone tank 11, but in the second embodiment, the separation air pipe 28 covers the activated stone tank 11 and the quartz glass pipe 9 that covers the ozone pipe 8 of the ultraviolet sterilizer 7. The first pipe 29 connected to the upper end face of the quartz glass pipe 9 and the second pipe 30 provided with the solenoid valve 31 connecting the lower end face of the quartz glass pipe 9 and the gas-liquid mixer 6 are arranged. The separated air thus separated is supplied to the gas-liquid mixer 6 through the inside of the quartz glass tube 9 of the ultraviolet sterilizer.

As a result, the separated air from the activated stone tank 11 is mixed into the hot water in the ozone pipe 8 in the state where oxygen is ozonized by the ultraviolet rays having the wavelength of 184.9 nm, and the hot water mixed with the air is reused. Ultraviolet ray sterilization device 7 Since ultraviolet rays are radiated to ozone ozone, the effect of ozone sterilization in addition to ultraviolet ray sterilization of hot water is further enhanced.

[0053]

EFFECTS OF THE INVENTION The present invention has the above-described structure and operation, and hot water is effectively sterilized by ultraviolet sterilization and ozone sterilization, and ozone used for sterilization is sprayed into a bath. Since it is not mixed at all, you do not have to worry about any harm to the bathers.

Further, since the air mixed in the hot water for ozone sterilization is separated from the hot water by gas-liquid separation and discharged in a harmless state containing almost no ozone, there is no fear of this harm. Absent.

Moreover, a bathtub hot water cleaning device capable of performing such safe and effective sterilization purification is provided at a simple and low cost.

[Brief description of drawings]

FIG. 1 is a first embodiment,

FIG. 2 is a second embodiment.

[Explanation of symbols]

 1 Hot Water Pipe 2 Filtration Device 4 Circulation Pump 5 Heater 6 Gas-Liquid Mixer 7 Ultraviolet Sterilizer 11 Active Stone Tank (Gas-Liquid Separator) 13 Fountain Pipe 19 Air Pipe 20 Solenoid Valve 21 Separation Air Pipe 22 Solenoid Valve 26 Separation Air Exhaust pipe 27 Solenoid valve 28 Separation air pipe 31 Solenoid valve

Claims (3)

[Claims] 1. A bathtub hot water purifying device for forcibly circulating hot water in a bathtub through a circulation path provided with various cleaning devices to clean the hot water. A mixer, an ultraviolet sterilizer, and a gas-liquid separator are sequentially arranged in series from upstream to downstream, and are separated by an air pipe that supplies the atmosphere to the gas-liquid mixer as an air supply line and a gas-liquid separator. A sterilizing and purifying apparatus for hot water in a bathtub, which is connected to a separation air pipe for supplying the generated air. 2. The apparatus for sterilizing and purifying bath water according to claim 1, wherein the separation air pipe is connected to the gas-liquid mixer through an ultraviolet sterilizer. 3. An air supply pipe line for supplying air to the gas-liquid mixer is switched between an atmosphere pipe and a separation air pipe according to the amount of separated air separated by the gas-liquid separator and the oxygen concentration. The sterilizing and purifying device for bath water according to claim 1 or 2, characterized in that.