JP3291459B2 - Water splash prevention device for crossflow cooling tower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing water droplets from splashing in a crossflow type cooling tower, and more particularly to a cooling device in which cooling water sprayed from an upper water tank via a sprinkler performs heat exchange in a packing material. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water droplet scattering prevention device for a crossflow cooling tower, which is prevented from being released into the atmosphere together with air.

[0002]

2. Description of the Related Art Conventionally, a cross-flow type cooling tower generally used in an air conditioner, an industrial facility, etc., draws cooling water having heat energy circulated from the load side in the cooling tower and sucks the cooling tower into the cooling tower with a blower. Heat is exchanged with the cooling air in the filling, and the cooled cooling water is circulated again to the load side, thereby cooling the load side. By the way, in this type of cross-flow type cooling tower, cooling water sprayed from an upper water tank via a sprinkler is discharged into the atmosphere together with cooling air that has exchanged heat in the packing, and the surroundings of the cooling tower are cooled. Problems have been pointed out that the environment around the cooling tower is contaminated by bacteria contained in the cooling water that is wetted or released.

In order to prevent the cooling water from being scattered from the cross-flow type cooling tower, an eliminator constituted by providing Z-shaped sheets at predetermined intervals is installed in the cooling tower body behind the packing. It has been proposed to arrange.

[0004]

However, since the water droplet scattering prevention device of this crossflow type cooling tower is constructed by providing a sheet-like body in which an eliminator is formed in a Z shape at a predetermined interval, a predetermined number of eliminators are provided. If the interval at which the sheet-like members are disposed is set small to obtain the performance of preventing the cooling water from scattering, the resistance of the cooling air sucked into the cooling tower by the eliminator becomes a resistance. We needed to raise it.

[0005] The cooling water captured by the eliminator falls into a lower water tank or a water collecting tank disposed below the cooling tower, and is circulated again to the load side together with the cooling water that has passed through the filling. However, there is a problem that the contamination progresses due to the concentration of water.

The present invention has been made in view of the above-mentioned problems of the water splash prevention device of the crossflow type cooling tower, and the cooling water sprayed from the upper water tank through the water sprayer without filling the blower without increasing the capacity of the blower. A cross-flow that can reliably prevent the air from being released into the atmosphere together with the cooling air that has exchanged heat with the object, and can prevent the progress of contamination due to the concentration of the cooling water. It is an object of the present invention to provide a water droplet scattering prevention device for a mold cooling tower.

[0007]

Means for Solving the Problems In order to achieve the above object, a water droplet scattering prevention device for a cross-flow type cooling tower according to the present invention is characterized in that cooling water is sprayed from an upper water tank through a water sprinkler. In a device for preventing water droplets of a cross-flow type cooling tower, which performs heat exchange between packings through which cooling air flows, a sheet made of a fiber having air permeability is provided on the upper surface of the top packing. An eliminator consisting of a body is provided.

[0008] In this cross-flow cooling tower water droplet scattering prevention device, an eliminator made of a fibrous sheet-like material having air permeability is disposed on the upper surface of the uppermost packing, so that the packing is not filled. When the cooling air that has undergone heat exchange passes through the eliminator, the eliminator can reliably capture the cooling water contained in the cooling air and prevent the cooling water from being released into the atmosphere. At the same time, since the eliminator is formed of a sheet-like body made of air-permeable fibers, the eliminator does not have a large resistance to hinder the flow of the cooling air sucked into the cooling tower.

In this case, a drain gutter may be provided along the bottom surface of the eliminator on the inner side of the cooling tower, and the drain gutter may be connected to the overflow pipe of the water collecting tank.

[0010] Thereby, the cooling water captured in the eliminator can be discharged as wastewater to the outside of the cooling tower without being circulated again to the load side together with the cooling water having passed through the packing, and the cooling water is concentrated. The pollution can be prevented from progressing, and the quality of the cooling water can be kept clean.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cross-flow cooling tower according to an embodiment of the present invention.

FIGS. 1 and 2 show a first embodiment of a water droplet scattering prevention device for a crossflow type cooling tower according to the present invention. The cross-flow type cooling tower 1 has an air inlet formed by louvers 6 formed on opposite sides of a cooling tower body 2 having a required size and shape, which is supported by a gantry 11. The protection of the filling material 7 and the like disposed inside of the cooling tower 2 is prevented, and the rectification of the cooling air sucked into the cooling tower body 2 is prevented.

An exhaust pipe 18 provided with a blower 9 is provided at the center of the top of the cooling tower body 2. By driving the blower 9 by an electric motor 10, cooling air is sucked from an air suction port, so that the filler 7 is filled. The air that has been heat-exchanged is released to the atmosphere.

An upper water tank 3 is provided above the cooling tower body 2, and a lower water tank 12 is provided below the cooling tower body 2. A diverting tank 4 is provided above the upper water tank 3, so that heat flowing from the load side is returned. Cooling water having energy is introduced into the upper water tank 3 through the diverting tank 4, and further, the cooling water is uniformly dropped on the filler 7 through the sprinkler 5 arranged below the upper water tank 3, When the dropped cooling water flows down the packing 7, heat is exchanged between the cooling water and the air by direct contact with the cooling air sucked into the cooling tower 2 by the blower 9, whereby the cooling water is cooled. The collected cooling water is collected in the water collecting tank 17 via the lower water tank 12 and circulated again to the load side, thereby cooling the load side.

In this case, an eliminator 8 made of a sheet of nonwoven fabric or woven fabric having air permeability is disposed on the upper surface of the uppermost packing 7, and cooling is performed by exchanging heat in the packing 7. When the working air passes through the eliminator 8, the cooling water contained in the cooling air is captured by the eliminator 8 to prevent the cooling water from being released into the atmosphere. The eliminator 8 is provided so that it does not float or move due to the wind pressure of the flowing air.
At 3 fix it in place.

Further, a drain gutter 14 is provided along the bottom surface on the inner end side of the cooling tower 2 of the eliminator 8.
4 is connected to the overflow pipe 16 of the water collecting tank 17, whereby the cooling water captured in the eliminator 8 is discharged as wastewater to the outside of the cooling tower 1 without being circulated again to the load side together with the cooling water passing through the filling 7. To do it.

In this case, the eliminator 8 includes the sprinkler 5
In addition to being installed so as to cover the entire upper surface of the packing 7 excluding the portion of the above, the water sprinkler 5 is particularly provided as in the second embodiment of the water droplet scattering prevention device of the cross-flow type cooling tower of the present invention shown in FIG. The intended purpose (water droplet scattering prevention) can also be achieved by installing the cooling tower body 2 so as to partially cover the inner end side of the cooling tower body 2 on the upper surface of the packing 7 excluding the portion.

Next, the operation of the cooling tower will be described. Cooling water having thermal energy circulated from the load side is introduced into the upper water tank 3 through the diversion tank 4, and further, through the water sprinkler 5 disposed below the upper water tank 3, to fill the filler 7.
It is dripped evenly on the top. When the cooling water dropped on the packing 7 flows down the packing 7, the cooling water comes into direct contact with the cooling air sucked into the cooling tower 2 by the blower 9,
The cooling water cooled by heat exchange with the air is collected in the water collecting tank 17 via the lower water tank 12 and circulated again to the load side, thereby cooling the load side. On the other hand, the cooling air sucked into the cooling tower body 2 by the blower 9 is:
The air is sucked from the louver 6 into the cooling tower body 2, circulates upward through the packing 7, passes through the eliminator 8 provided on the upper surface of the packing 7 at the uppermost stage, and is exhausted by the blower 9. It is released into the atmosphere via the cylinder 18.

In this case, the cooling air that has undergone heat exchange in the filler 7 contains not only water vapor but also minute water-drop-shaped cooling water. Together with the cooling air, the gas flows upward in the packing 7 and reaches the eliminator 8 disposed on the upper surface of the packing 7 in the uppermost stage. When passing through the eliminator 8, the cooling water contained in the cooling air is captured by the eliminator 8 together with the condensed water in which the water vapor contained in the cooling air is condensed. The cooling water trapped by the eliminator 8 is received by a drain gutter 14 disposed along the bottom surface on the inner end side of the cooling tower 2 of the eliminator 8, while being prevented from being released into the atmosphere. From the cooling tower 1 through the overflow pipe 16 of the water collecting tank 17 as waste water.

[0020]

According to the apparatus for preventing water droplets of a crossflow cooling tower of the present invention, the apparatus for preventing waterdrops of a crossflow cooling tower comprises:
Since the eliminator made of a sheet material made of fiber having air permeability is arranged on the upper surface of the top packing, when the cooling air that has undergone heat exchange in the packing passes through the eliminator, With this eliminator, the cooling water contained in the cooling air can be reliably captured and prevented from being released into the atmosphere,
This allows the cooling water to wet the area around the cooling tower,
The environment around the cooling tower can be prevented from being contaminated by bacteria contained in the cooling water. In addition, since the eliminator is formed of a sheet-shaped body made of air-permeable fibers, the eliminator does not have a large resistance to obstruct the flow of cooling air sucked into the cooling tower, and therefore, it is necessary to increase the capacity of the blower. Since there is no water droplet scattering prevention device, the existing cooling tower can be easily equipped with the water droplet scattering prevention device.

Further, a drain gutter is provided along the bottom surface of the eliminator on the inner side of the cooling tower, and the drain gutter is connected to an overflow pipe of the water collecting tank, so that the cooling water captured by the eliminator is filled with the filler. Can be discharged as wastewater to the outside of the cooling tower without being circulated again to the load side together with the cooling water that has passed through the cooling water, preventing the pollution of the cooling water from progressing by being concentrated and purifying the quality of the cooling water. Can be held.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a water droplet scattering prevention device for a cross-flow cooling tower according to the present invention.

FIG. 2 is a front view showing a main part of FIG. 1;

FIG. 3 is a front view showing a main part of a second embodiment of a water droplet scattering prevention device for a crossflow cooling tower according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cross-flow type cooling tower 2 Cooling tower body 3 Upper water tank 4 Separation tank 5 Sprinkler 6 Louver 7 Filling 8 Eliminator 9 Blower 10 Electric motor 11 Mount 12 Lower water tank 13 Holder 14 Drain gutter 15 Spray water drain pipe 16 Overflow pipe 17 Water collecting tank 18 exhaust pipe

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-114844 (JP, A) JP-A 52-121754 (JP, U) JP 7-29422 (JP, Y2) (58) Field (Int.Cl. ⁷ , DB name) F28F 25/00-25/12 F28C 1/00-1/16

Claims (2)

(57) [Claims] 1. A cross-flow type cooling tower in which cooling water is sprayed from an upper water tank via a sprinkler so that heat is exchanged in a packing through which cooling air flows, which is disposed below the sprinkler. The water droplet scattering prevention device for a crossflow type cooling tower, wherein an eliminator made of a sheet material made of air-permeable material is disposed on the upper surface of the uppermost packing. 2. The straight line according to claim 1, wherein a drain gutter is provided along a bottom surface of the eliminator on the inner side of the cooling tower, and the drain gutter is connected to an overflow pipe of the water collecting tank. Water splash prevention device for AC cooling tower.