JPH06106174A - Purification device for hot bathtub water - Google Patents

Abstract

PURPOSE:To enable ozone sterilization in low concn. so as not to injure a bathing person by unreacted ozone. CONSTITUTION:A high voltage discharge type ozone generator 12 sending ozonized air to the ozonized air suction device 5 of a hot bathtub water circulating passage 11 through an ozonized air supply pipe 15 is arranged and an intermittent voltage supply means 18 supplying intermittent voltage to the ozone generator 12, an intermittent voltage control means 19 controlling the voltage supply interval of the intermittent voltage supply means corresponding to the ozone concn. set by an ozone concn. setting means 20 and the humidity detected by a humidity detection means 22 and an intermittent voltage and humidity correction means 21 are arranged to a control unit 17. By this constitution, the supply interval of voltage to the ozone generator 12 is controlled while the correction corresponding to humidity is performed and the ozonizing degree of air is freely controlled corresponding to ozone concn. and humidity and low conc. ozonized air can stably be formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub device, and more particularly to an ozone sterilizer for a bathtub cleaning device.

[0002]

2. Description of the Related Art Recently, a bathtub in which hot water in a bathtub is pumped up by a circulation pump to forcefully circulate the bathtub hot water circulation passage in which various cleaning treatment devices are provided and to eject the purified water into the bathtub again. A hot water purifier has been developed.

In a conventional bath water cleaning device, dirt components are removed by ion exchange, and at the same time activated stones such as barley stone that elutes and activates minerals, activated carbon that adsorbs and removes dirt, and ion exchange of dirt. At the same time, a filtration tank is provided in which a porous granular filter medium having various water treatment capacities such as zeolite that has been adsorbed and removed is filled individually or in combination to form a filtration layer. At the same time that the water is filtered, a treatment according to the water treatment capacity of the filter medium is performed to clean the hot water.

On the other hand, the recent apparatus is not only for removing the dirt from the hot water to clean it, but also for keeping the hot water at a proper temperature by a heater so that it can be bathed for 24 hours at any time. Has become.

In the case of such a device, it is necessary to provide a sterilizing device in order to prevent Escherichia coli and other bacteria from propagating in hot water, and as a simple sterilizing device, a high-pressure discharge type ozone generator, so-called ozonizer is used. It came to be deployed.

In the ozonizer, a high voltage is applied to the electrodes and silent discharge is performed to ozone the oxygen in the air introduced into the apparatus to generate ozone air, which is air containing a predetermined amount of ozone. Is inhaled in hot water for ozone sterilization.

[0007]

However, in the conventional ozone sterilization using the ozonizer, it was very difficult to completely sterilize the hot water without causing harm to the human body.

That is, when the hot water is sterilized with ozone, unreacted ozone remaining in the hot water is emitted from the bathtub, so that the bather smells ozone and becomes uncomfortable. Damaged by various ozone that may cause skin irritation.

In order to prevent such a problem, conventionally, the concentration of ozone air used for sterilization is lowered as much as possible,
Measures were taken to separate unreacted ozone air from the hot water in front of the bath, decompose it, and exhaust it, or to carry out ozone sterilization during the time when there is no bather. However, it was not an effective measure.

When sterilization is carried out by lowering the ozone concentration of ozone air, naturally, the amount of unreacted ozone remaining in the hot water also decreases, so it is desirable to sterilize with ozone air of the minimum necessary concentration. .

For this reason, conventionally, a method of lowering the voltage applied to the ozonizer to lower the degree of ozonization of oxygen in the air to lower the concentration of ozone air has been considered.

However, a predetermined voltage is required to generate a discharge with the ozonizer, and if the voltage is low, the degree of ozone conversion of oxygen in the air is unstable and a large variation in concentration occurs. There was a limit to how low it could be, and it was not possible to generate low-concentration ozone air by controlling the voltage.

When ozone is generated by an ozonizer, the degree of ozonization changes depending on the humidity of the air introduced for ozonization, and if the humidity is high, the air is less likely to be ozonized.

Therefore, in the case of generating low-concentration ozone air, it is necessary to adjust the humidity of the air to be ozonized in order to prevent the concentration from fluctuating, which increases the cost of the apparatus and is very difficult to maintain. become.

Since it is difficult to generate low-concentration ozone air, sterilization is performed with high-concentration ozone air, and unreacted ozone air is separated from the hot water in front of the bath to decompose ozone and be harmless. After that, it was considered to exhaust.

In this case, a gas-liquid separating device for separating air containing ozone from hot water and an ozone decomposing device for decomposing ozone in the separated air into harmless oxygen must be provided. .

However, when the gas-liquid separator and the ozone decomposing device are provided in this manner, the device is naturally complicated and expensive, and in particular, the ozone decomposing device separates ozone in the air separated from hot water and having humidity. Since it is difficult to completely disassemble, it is complicated and expensive, and it is difficult to deploy it in the bath water cleaning device.

As described above, since it is difficult to use low-concentration ozone air or to decompose unreacted ozone air by gas-liquid separation, the operating time of the ozone sterilizer for one day is programmed, for example, at midnight. It was also considered that ozone sterilization should be performed with high-concentration ozone air only during the time when there is no bather.

In this case, since ozone sterilization is not carried out during the bathing time, the bather is hardly affected by ozone, but bacteria such as Escherichia coli proliferate badly during the bathing time, so that it will be delayed. Bathers will have to go into a filthy hot water with a lot of bacterial growth.

Further, it is difficult to completely sterilize the bacteria that have badly propagated during the bathing time only by the sterilization time zone, and the hot water tends to be insufficiently sterilized.

The present invention solves the above-mentioned drawbacks of the prior art, and stabilizes a low concentration of ozone air in which unreacted ozone, which is harmful to the human body, hardly diffuses from the bath without being affected by humidity. It is an object of the present invention to provide a simple and inexpensive apparatus for purifying hot water in a bath, which can be generated and sterilized thereby to keep the hot water constantly clean.

[0022]

That is, according to the present invention, the hot water in the bathtub is pumped up by a circulation pump, and the hot water that has been subjected to the cleaning treatment is forcibly circulated in the bathtub hot water circulation passage in which various cleaning treatment devices are provided. In the bath water purifier to be ejected again into the bath, a high-pressure discharge type ozone generator is provided for ozone sterilization as the cleaning device, and a voltage is used as a power source for a control device for the high-pressure discharge type ozone generator. The intermittent voltage supply means for intermittently supplying at a predetermined interval, the intermittent voltage control means for determining the voltage supply interval of the intermittent voltage supply means based on the ozone concentration set by the ozone concentration setting means, and the intermittent voltage control means An intermittent voltage / humidity correction means for correcting the voltage supply interval of the determined intermittent voltage supply means according to the humidity detected by the humidity detection means is provided. It is a cleaning apparatus of the bathtub hot water

[0023]

The present invention is constructed as described above. First, since the voltage is intermittently supplied from the intermittent voltage supply means to the ozone generator, air is supplied per unit time by changing the voltage supply interval. The concentration of ozone air can be changed by changing the degree of ozonization.

Further, the ozone concentration setting means and the intermittent voltage control means for changing the ON-OFF time ratio of the intermittent voltage supply means, that is, the duty ratio based on the ozone concentration set by the ozone concentration setting means are provided. Therefore, it is possible to easily generate the set low-concentration ozone air by freely changing the voltage supply interval.

Furthermore, since intermittent voltage / humidity correction means for correcting the supply interval of the voltage controlled by the intermittent voltage control means according to the set concentration according to humidity is provided, the air to be ozonized is adjusted. Even if the humidity varies, the concentration does not vary, and stable sterilization can be performed with ozone air having a predetermined concentration.

[0026]

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

FIG. 1 is a block diagram showing the basic structure of the apparatus for cleaning bathtub hot water according to the present invention. 1 is a bathtub and 2 is a bathtub 1.
A circulation pump for forcibly circulating the hot water in the interior, 3 heaters for heating the hot water to an appropriate temperature, 4 filled with barley stone, activated carbon, etc., and water treatment such as adsorption and activation while filtering dirt The filtration tank 5 for performing the operation is an ozone air inhaling device such as a bench-yurie type in which ozone-containing air, that is, ozone air is sucked into the hot water by increasing the flow velocity of the hot water to form a negative pressure.

Various types of cleaning equipment as described above are
The hot water pipe 6 for sucking hot water from the bathtub 1, the hot water pipe 7 for jetting the purified hot water into the bathtub 1 and the connecting pipes 8, 9 and 10 are connected in series to each other to clean the hot water bath. The bathtub hot water circulation path 11 is formed for the purpose.

Reference numeral 12 is a high-pressure discharge type ozone generator for soaking ozone in the air by applying a high voltage to generate a silent discharge between the electrodes, a so-called ozonizer, and 13 is an air supply pipe for supplying air for ozonization. Reference numeral 15 is an air supply device for sending the ozone air to the ozone generator through 14, and 15 is an ozone air supply pipe for sending the ozone air generated by the ozone generator to the ozone air suction device 5 of the bath water circulation circuit 11.

Reference numeral 16 is an ozone air storage device provided in the middle of the ozone air supply pipe, and the ozone air sent from the ozone generator 12 is not ozoneized because no voltage is applied to the ozone air storage device. Temporarily make the concentration uniform with the air sent by.

Reference numeral 17 denotes a control device for controlling the cleaning device as a whole, and this control device 17 includes an ozone generator 12
To control the ozone generator 12, an intermittent voltage supply means 18 for intermittently supplying a voltage to the ozone generator 12, an intermittent voltage control means 19 for controlling the voltage supply interval of the intermittent voltage supply means 18, and an ozone concentration setting. The ozone concentration setting means 20 is provided.

Further, the control device 17 corrects the supply interval of the voltage determined by the intermittent voltage control means 19 according to the ozone concentration set by the ozone concentration setting means 20 according to the humidity so as to detect the humidity. Humidity detecting means 22 of
Intermittent voltage / humidity correction means 21 for correcting the voltage supply interval based on the humidity data from the humidity detection means 22 is provided.

Since the control device 17 is provided with various control means as described above, the ozone generator 12 is
Based on the concentration set by the ozone concentration setting unit 20 and the humidity detected by the humidity detecting unit 22, the intermittent voltage control unit 19 and the intermittent voltage humidity correcting unit control the interval at which the voltage is supplied from the intermittent voltage supplying unit 18, As a result, the amount of ozone generated per unit time is controlled so as to reach the set concentration regardless of changes in humidity.

FIG. 2 shows the above-mentioned basic structure as a concrete structure. In the cleaning device, a high-pressure discharge type ozonizer 23 as the ozone generator 12 and an air as the air supply device 13 are provided. A pump 24, an air tank 25 as the ozone air storage device 16, a bench-yuri type aspirator 24 as the ozone air suction device 5, and the like are provided.

Further, in the control device 17 for controlling the cleaning device as a whole, the voltage pulse generator 28 as the intermittent voltage supply means 18, the ozone concentration setting key 27 as the ozone concentration setting means, and the humidity detecting means 22 are provided. A humidity sensor 29 for detecting humidity, a humidity detector 30 for converting analog data detected by the humidity sensor 29 into digital data for control, and the like are provided.

The intermittent voltage control means 19 and the intermittent voltage / humidity correction means 21 include a CPU 31 which performs arithmetic processing based on various control data, a concentration data indicating the relationship between ozone concentration and an intermittent voltage supply interval, and intermittent voltage supply by humidity. A ROM 32 in which various control data such as humidity correction data for correcting the interval is stored, a RAM 33 for temporarily storing data for arithmetic processing, an off-timer 34 for setting time for determining the supply interval of the intermittent voltage, and the like are provided. Has been done.

The operation of ozone sterilization controlled by the control device 17 having the above-described configuration will be described below.

First, when the desired ozone concentration is set by the ozone concentration setting key 27, the concentration data corresponding to the ozone concentration set from the ROM 33 is called, and at the same time detected by the humidity sensor 29 and sent from the humidity detector 30. Humidity correction data corresponding to the humidity data is called.

The CPU 31 performs arithmetic processing based on the concentration data and the humidity correction data read out from the ROM 32, and the voltage pulse generator 28 is turned on during the time when the pulse voltage is generated, and is turned off and the generation of the pulse voltage is stopped. The off-timer 34 is timed to determine the duty ratio, ie, the duty ratio.

As a result, the ozonizer 23 is controlled so that the pulse voltage is intermittently supplied from the voltage pulse generator 28 at the predetermined duty ratio, so that the air continuously sent from the air pump 24 is set. The ozone is intermittently ozonized to obtain a high ozone concentration.

In this case, the duty ratio can be changed freely and precisely, so that the amount of air ozonized per unit time can be adjusted freely and accurately, whereby even if the concentration is low, ozone of any concentration can be obtained. Since air can be generated and is also corrected by humidity, the concentration does not vary even if the humidity changes.

The air intermittently ozonized by the ozonizer 23 is temporarily stored in the air tank 25 together with the non-ozonized air to become ozone air having a uniform concentration, and then flows through the bath water circulation passage 11 by the aspirator 26. Inhaled in hot water for sterilization.

[0043]

The present invention has the above-described structure and operation, and since it can be sterilized by uniform ozone air having an arbitrary set concentration, it has a low concentration of ozone so that unreacted ozone does not scatter from the bath. It becomes easy to sterilize with air.

Since the humidity has been further corrected, FIG.
As is clear from the graph showing the relationship between the humidity and the ozone concentration, the present invention does not change the concentration like the conventional example shown by the dotted line B even if the humidity changes as shown by the solid line A. Almost constant and very stable concentration is obtained even at low concentration.

As a result, even if a special device such as a gas-liquid separator or an ozone decomposing device is not provided, even if the bather is sterilized during the bathing time, the bather smells an ozone odor and feels uncomfortable or has a bad health effect. There is no need to worry about harm, and the sterilization can be done continuously for 24 hours to keep the hot water clean.

[Brief description of drawings]

[Figure 1] Basic block diagram,

[Fig. 2] Detailed block diagram,

[Fig. 3] Change in humidity and change in ozone concentration.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Circulation pump 5 Ozone air suction device 11 Bathtub hot water circulation path 12 Ozone generator 15 Ozone air supply pipe 16 Ozone air storage device 18 Intermittent voltage supply means 19 Intermittent voltage control means 20 Ozone concentration setting means 21 Intermittent voltage humidity correction means 22 Humidity detection means

Claims (1)

[Claims] 1. A bathtub hot water in which the hot water in the bathtub is pumped up by a circulation pump and forcedly circulates in a bathtub hot water circulation passage provided with various cleaning treatment equipment to jet the purified hot water again into the bathtub. In the cleaning device, a high-pressure discharge ozone generator is provided for ozone sterilization as the cleaning device, and a voltage is intermittently supplied as a power source to a control device for the high-pressure discharge ozone generator at a predetermined interval. The intermittent voltage supply means, the intermittent voltage control means for determining the voltage supply interval of the intermittent voltage supply means based on the ozone concentration set by the ozone concentration setting means, and the voltage of the intermittent voltage supply means determined by the intermittent voltage control means An apparatus for cleaning bathtub hot water, comprising: an intermittent voltage / humidity correction means for correcting the supply interval according to the humidity detected by the humidity detection means.