JP3012037U - Cooling water purification device in air conditioning facility - Google Patents

Abstract

(57) [Summary] [Object] To provide a device for preventing contamination such as algae generation in a cooling tower and removing miscellaneous bacteria such as Legionella bacteria contained in scattered cooling water. [Structure] A filter 11 is provided in a cooling water circulation path of an air conditioning facility, and a filter 2 having a peripheral wall 2 accommodates a filter cylinder 1 made of a filter sheet. At the center of the filter tube 1 is a tube wall 3
Filter material 7 in which a is inserted through the porous water discharge pipe 3 and the space between the filter cylinder 1 and the water discharge pipe 3 is mainly composed of granular activated carbon and mixed with an antibacterial agent in which zeolite is adsorbed silver
To fill. The outside of the filter cylinder 1 in the filter 11 is connected to the cooling water inlet 19 of the cooling water circulation path, and the water outlet pipe 3 is connected to the cooling water outlet 20.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for purifying cooling water in an air conditioning facility that cools a building or the like.

[0002]

[Prior art]

 The cooling tower installed on the rooftop of the building sprays and flows hot water from the condenser of the heat exchanger, cools it by blowing outdoor air onto it, and reuses it as cooling water for the condenser. It is a device. Conventionally, this cooling tower has not been equipped with a cooling water purifying device, so algae grow and it is necessary to clean it frequently. Also, when the outdoor air is cooled by the blower of the cooling tower, about several percent of the entire cooling water is scattered around, and this scattered cooling water also contains miscellaneous bacteria such as Legionella bacteria and is also scattered outside. Recent research has revealed that this is happening.

[0003]

[Problems to be solved by the device]

 As described above, in the conventional cooling tower, since it becomes dirty due to the generation of algae, it is necessary to clean it frequently, and maintenance is troublesome. In addition, since various bacteria are scattered with the cooling water, there is concern about the occurrence of diseases caused by these various bacteria. In particular, it has recently been discovered that Legionella bacteria are scattered by cooling towers, and the occurrence of pneumonia due to these Legionella bacteria has become a problem.

The present invention solves the above-mentioned drawbacks, prevents contamination of a cooling tower due to algae generation, etc., reduces the cleaning work, and provides an apparatus for removing scattered bacteria contained in cooling water. The purpose is to

[0005]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention has the following configuration.

That is, according to the present invention, a filter is provided in a cooling water circulation path of an air conditioning facility, and a filter cylinder whose peripheral wall is made of a filter sheet is housed in the filter. In the center of the filter tube, a water outlet tube with a porous wall was inserted, and in the space between the filter tube and the water outlet tube, a granular activated carbon was mainly used, and an antibacterial agent in which silver was adsorbed on zeolite was mixed. Fill with filter media. The outside of the filter cylinder of the filter is connected to the cooling water inlet of the cooling water circulation path, and the outlet pipe is connected to the cooling water outlet.

[0007]

[Action]

 When the cooling water polluted in the cooling water circulation path of the air conditioning facility permeates inward from the outer circumference of the filter cylinder, large diameter dust is removed by the peripheral wall of the filter cylinder made of the filter sheet. Next, the activated carbon removes dirt, and the antibacterial agent removes bacteria and algae spores. In this way, the cooling water is discharged from the drain pipe and circulated after dust, miscellaneous bacteria, algae spores, etc. are removed.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partial sectional view of a filter cylinder housed in a filter, and FIG. 2 is a plan view of this filter cylinder. The filter cylinder 1 has a cylindrical shape, and a water discharge pipe 3 is inserted through the central portion of the filter cylinder 1, and annular lids 5 and 5 are attached to the upper and lower surfaces thereof. Both ends of 3 are connected to the openings 3b and 3b, respectively. Then, the filter medium 7 is filled between the filter cylinder 1 and the water outlet pipe 3.

The peripheral wall 2 of the filter cylinder 1 is formed of a filter sheet such as a filter paper or a polyethylene fiber cloth. In this embodiment, a polyethylene fiber cloth (for example, Toray's product name Axter) is used as the filter sheet. When a polyethylene fiber cloth is used, the water resistance is improved as compared with paper filter paper, and the filter absorbs water and is not easily broken, and durability is significantly improved. The filter sheet is not limited to polyethylene fiber cloth, and various materials having high water resistance and filtration ability can be used. The filter sheet may be attached as it is, but if it is formed into a bellows shape, the surface area is increased and the filtering ability is further improved, and the flow rate of the cooling water is hardly affected. The pipe wall 3a of the water discharge pipe 3 is formed of a porous material such as a wire mesh having fine meshes (having meshes of a size that does not allow the filter medium as the contents to flow out). The filter medium 7 is a mixture of an activated carbon 1 and an antibacterial agent at a volume ratio of about 0.1, and the antibacterial agent is a porous zeolite on which silver is adsorbed. The adsorption of silver is performed by impregnating porous zeolite with an aqueous solution of silver. At this time, the antibacterial effect is sufficiently exerted even if the amount of silver adsorbed is a very small amount of a few ppm or less.

Reference numeral 11 is a filter, and a cooling water inlet 19 and a cooling water outlet 20 are opened in a lid 21 that closes one end thereof. Reference numeral 22 is a filter mounting pipe having a wire mesh surrounding and connected to the cooling water outlet 20. Then, as shown in FIG. 3, the filter cylinder 1 is connected in series with the packing 8 interposed therebetween, and the filter attachment pipe 22 is passed through the water discharge pipe 3 and accommodated in the filter 11. The other open side of the filter cylinder 11 is pressed by the plate 9, and a screw 25 is passed through a hole provided in the plate retainer 10. The screw 25 is screwed into a screw hole provided at the tip of the filter mounting tube 22. Stop and close the lid 12 (FIG. 4). And the filter 11 is installed in the middle of the path | route which the cooling water which came out of the cooling tower 13 returns to the condenser 14 of a heat exchanger as shown in FIG. Since most of the cooling water is contaminated in the cooling tower 13, it is preferable to connect it to the outlet side of the cooling tower 13.

To purify the cooling water, first, a first-stage filtration for removing relatively large dust is performed by a filter sheet stretched over the peripheral wall 2 of the filter cylinder 1. Then, dirt is adsorbed by the activated carbon in the filter medium 7, and bacteria are removed by the antibacterial agent. In particular, silver in the antibacterial agent binds to proteins of various bacteria to remove metabolic function and exert an antibacterial effect. When the antibacterial action is reduced, the filter 11 is opened, the old filter cylinder 1 is taken out, and the new filter cylinder 1 is stored instead, and the filter cylinder 1 can be easily replaced.

[0012]

[Effect of device]

 In essence, the present invention has a filter in which the space between the filter cylinder and the water outlet pipe is filled with a filter medium mainly composed of granular activated carbon, and an antibacterial agent in which zeolite is adsorbed with silver is mixed in the filter. Since it is housed in the filter provided in the middle of the cooling water circulation route, the generation of algae in the cooling tower is prevented and various bacteria are removed. Therefore, maintenance work such as cleaning of the cooling tower is significantly reduced, and the occurrence of diseases caused by the cooling water of the air conditioning facility contaminated with various bacteria can be prevented.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a filter cylinder housed in a filter.

FIG. 2 is a plan view of a filter cylinder housed in a filter.

FIG. 3 is an exploded perspective view of a filter.

FIG. 4 is a sectional view of a filter.

FIG. 5 is a piping diagram of a cooling tower and a filter.

[Explanation of symbols]

 1 Filter Cylinder 2 Circumferential Wall of Filter Cylinder 3 Outlet Pipe 3a Pipe Wall 7 Filter Material 11 Filter 13 Cooling Tower 14 Condenser 19 Cooling Water Inlet 20 Cooling Water Outlet

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 1/50 531 E 540 F 550 B 560 B B01D 35/02 C02F 1/28 F F28F 19/01 25/02

Claims (1)

[Scope of utility model registration request] 1. A filter is provided in a cooling water circulation path of an air-conditioning facility, and a filter tube made of a filter sheet having a peripheral wall is housed in the filter, and a water outlet pipe having a porous wall is provided at the center of the filter tube. Along with the insertion, the space between the filter tube and the water outlet pipe is filled with a filter medium in which an antibacterial agent in which silver is adsorbed to zeolite is used as a main component of granular activated carbon, and the outside of the filter tube of the filter is filled. A cooling water purifying device in an air conditioning facility, which is connected to a cooling water inlet of a cooling water circulation path and a water outlet pipe to a cooling water outlet, respectively.