JPH0550077A - Ozone purifying apparatus - Google Patents

Abstract

PURPOSE:To save water by utilizing a portion of treated water as cooling water of an ozonizer. CONSTITUTION:A hair catcher 2, a forced feeding pump 3, a filter 4, a boiler 7 are provided from the upper stream on a circuit pipe R1 connecting an inlet catchment port 1a of a pool 1 and a circulated water inflow port 1b of the pool 1, and from the vicinity of an ejecting port of the forced feeding pump 3, a branched circuit pipe R2 being interposed with a gas-liquid mixer 5 and a reaction tank 6 on the way is branched, and water is returned to the upper stream of the forced feeding pump 3. The gas-liquid mixer 5 is connected to the ozonizer 8 with an ozone supplying pipe R3. A portion of the pool water is introduced to the ozonizer 8 from the more upper stream part than the gas- liquid mixer 5 of the branched circuit pipe R2 through a cooling water supplying pipe R4 and, after the ozonizer 8 is cooled with it, it is returned to a circle system of the pool water from the vicinity of the outlet of a reaction tank 6 of the branched circuit pipe R2 through a cooling water pipe R5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone purifying apparatus used for purifying pool water and the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, an ozone purifying apparatus of this type has an intake port 1a of a treated water tank 1 such as a pool and a circulating water inlet port 1b of the treated water tank 1, a hair catcher 2 and a pressure feed unit on the way. The pump 3, the filter 4, and the boiler 7 are connected by a circulation pipe R1. A branch circulation pipe R2 branches from the discharge passage of the pressure pump 3 of the circulation pipe R1. 5, pressure pump 3 with reaction tank 6 interposed
, An ozonizer 8 is connected to the gas-liquid mixer 5 by an ozone feed pipe R3, a cooling water supply pipe 4 is connected to the ozonizer 8, and tap water or the like is supplied as cooling water for cooling. The water drainage pipe R5 was designed to discharge cooling water.
The reaction tank 6 includes a gas-liquid separator 10 and an ozone separation tower 11
Are connected by a connecting pipe R6 to treat the exhaust ozone.

2 to 5 l / m for cooling the ozonizer
Since the cooling water amount Q of in is required, the conventional cooling method as described above requires the amount of clean water or the like represented by the following formula 1, and accordingly, in the operating cost of the device, It was necessary to include the cost of cooling water represented.

B = 60 QA = 120 to 300 A (Equation 1) P = 0.001 VB (Equation 2) where A: device operating time (h / day) Q: amount of cooling water (liter / min) ) B: Required amount of cooling water per day (liter / day) V: Unit price of water supply (yen / m ³ ) P: Cost of cooling water per day (yen / day)

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to reduce the amount of clean water and the like required above to save water and to reduce the cost associated therewith.

[0006]

Means for Solving the Problems The above problems are as follows: 1) In an ozone purifying apparatus used for purifying pool water or the like, a part of the treated water is used as cooling water for cooling an ozonizer. Ozone purifying device.

2) In the ozone purifying apparatus described in 1) above, the treated water used as cooling water is taken from a high pressure portion in the pressure distribution in the treated water circulation route and used for cooling, and then in the circulation route. An ozone purifier characterized by returning to a low-pressure section. Achieved by

Here, the treated water referred to as treated water or treated water used as cooling water means water being treated in the circulation route in the ozone purifying apparatus of the present invention. An application example of the present invention will be described with reference to FIG.
A filter 4 and a boiler 7 are arranged, and a branch circulation path pipe R2 having a gas-liquid mixer 5 and a reaction tank 6 in the middle is branched from the vicinity of the discharge port of the pressure pump 3 to the upstream side of the pressure pump 3. return. In the gas-liquid mixer 5, the ozonizer 8 is provided with the ozone supply pipe R3.
Are connected with. This pool water treatment route is the same as the conventional one. In the present invention, the pool water is partially guided to the ozonizer 8 from the upstream portion of the gas-liquid mixer 5 of the branch circulation path pipe R2 by the cooling water supply pipe R4, and the cooling of the ozonizer 8 is performed. A drain pipe R5 is used to return the branched circulation passage pipe R2 from the vicinity of the outlet of the reaction tank 6 to the circulation system of pool water.

FIG. 2 shows another application example. In FIG. 2, the branch circulation pipe R2 is branched near the outlet of the filter 4, returned between the branch point and the boiler, and cooling of the ozonizer 8 is performed by supplying cooling water from the vicinity of the discharge port of the pressure pump 3 of the circulation pipe R1. Tube R
In 4, the pool water is partially guided to the ozonizer, and the cooling water drain pipe R5 returns the cooling water from the outlet of the reaction tank 6 of the branch circulation pipe R2 to the circulation system of the pool water. The arrangement of each device is the same as in the above application example. However, a circulation pump 9 is provided between the gas-liquid mixer 5 and the reaction tank 6 in the branch circulation pipe R2.
Has been added.

Further, in both of the above two examples, the gas-liquid separator 10 and the ozone decomposing tower are connected to the reaction tank 6 by the connecting pipe R6 to treat the exhaust ozone. The ozonizer needs to be cooled in order to protect the device and stabilize the performance. The ozonizer of the above application example is
The water cooling system is adopted in consideration of safety and reliability. In the case of water cooling, there is a concern that the cooling water will be cut off, but the ozonizer in the above example is equipped with a cooling water cutoff relay, which is a simple and inexpensive method for protection when water is cut off. In some cases, it has a system that automatically stops.

Therefore, according to the present invention, when the operation of the pool water purifier is stopped and the circulation of the pool water is stopped, the supply of the cooling water to the ozonizer is stopped and the ozonizer is also stopped. It is effective in preventing the ozone concentration of the ozonization system from increasing due to the operation of the ozonizer regardless of the movement of the pool water.

When the cooling water is tap water or the like, the water temperature of the tap water is usually 20 ° C. or lower, and especially in winter, the temperature of the tap water is further lowered by the outside air temperature and the ground water is generally 15 ° C. or lower. Therefore, in an environment with high humidity such as a machine room in which the ozonizer is installed, dew condensation is likely to occur in the ozonizer. On the other hand, according to the present invention,
Since the pool water is heated by the boiler and kept at about 30 ° C, it is possible to prevent dew condensation in the ozonizer. Considering the cooling property, it seems that the cooling water temperature is 30 ° C., but in the case of water cooling, the heat transfer efficiency is good, so that cooling water of 30 ° C. can be sufficiently cooled. There is an example of using air cooling as a cooling method that does not waste water, but in the case of air cooling, the cooling capacity is affected by changes in room temperature, so the amount of ozone generated changes significantly, and moreover, the source gas is the majority of the cooling medium. However, if the amount of the raw material gas is decreased, the internal temperature rises and the life of the device is shortened.

Further, according to the present invention, since the ozonizer cooling water is taken in and discharged by utilizing the pressure difference in the circulation path of the pool water, no special water injection device is required.

[0014]

[Embodiment] In the above application example, the following is a trial calculation of the amount of water saving. As for the consumption of tap water when the tap water is used as cooling water as in the conventional case, assuming that the device operation time A = 24 (h / day) in the formula 1, the required cooling water amount B per day B = 2880 to 7200 (liters) / Day), and the value of B is used, and the unit price of tap water V = 573
(Yen / m ³ ), put these values in Equation 2 above and obtain 1
Calculating the cooling water cost per day, P = 1650 ~
It becomes 4126 (yen / day). Therefore, according to the present invention, the cost of clean water of 2880 to 7200 liters / day and the cost of cooling water of 1650 to 4126 yen per day can be saved.

[0015]

INDUSTRIAL APPLICABILITY The present invention is particularly effective when the quality of treated water is relatively good. As described above, since the pressure difference in the pipe is used, it is necessary to provide a new pipe. The treated water can be used for cooling the ozonizer without complicating the system of the purifying device, such as the present invention can be configured without installing a special device in the device.

Further, since the treated water can be used as the cooling water, dew condensation in the apparatus can be prevented without taking any special measures, and the safety is increased by the synergistic function of the ozonizer and the automatic stop function when the cooling water is cut off. be able to.

Further, the amount of clean water or the like which has been conventionally used as the cooling water can be saved, and the cost of the cooling water can be reduced from the cost of operating the purifying device.

[Brief description of drawings]

FIG. 1 is a system diagram of one application example of an apparatus of the present invention.

FIG. 2 is a system diagram of another application example of the device of the present invention.

FIG. 3 is a system diagram of a typical application example of a conventional device.

[Explanation of symbols]

 1 Treated water tank (pool etc.) 1a Water intake 1b Circulating water inlet 2 Hair catcher 3 Pressure pump 4 Filter 5 Gas-liquid mixer 6 Reactor 7 Boiler 8 Ozonizer 9 Circulating pump 10 Connecting pipe 11 Gas-liquid separator 12 Ozone decomposer R1 circulation pipe R2 branch circulation pipe R3 ozone delivery pipe R4 cooling water supply pipe R5 cooling water drain pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Kamiya 11-1 Haneda-Asahi-cho, Ota-ku, Tokyo Inside EBARA CORPORATION

Claims (2)

[Claims] 1. An ozone purifying apparatus used for purifying pool water or the like, wherein a part of the treated water is used as cooling water for cooling an ozonizer. 2. The ozone purifying apparatus according to claim 1, wherein the treated water used as cooling water is taken from a high pressure portion in a pressure distribution in a circulation path of the treated water and used for cooling,
An ozone purifier characterized by returning to a low pressure portion in the circulation path.