KR101203323B1 - Counter flow type of cooling tower having noise reduction structure - Google Patents

Abstract

The present invention relates to a counterflow type cooling tower having a noise preventing structure that can prevent noise from occurring when a coolant falls by providing a noise preventing unit between a filling material and a water collecting tank, and to one side with respect to the falling direction of the falling coolant. A second inclined member connected to the inclined first inclined member and the first inclined member and inclined in a direction opposite to the first inclined member to form a concave with the first inclined member; And an overflow prevention jaw that is inclined in the same direction as the first inclined member to form a concave portion with the second inclined member, one or more through holes formed in a horizontal direction between the first inclined member and the second inclined member, and an upper portion of the through holes. It includes a noise suppression unit, which is formed with one or more support members protruding from the lower part and guiding the coolant falling through the hole. The.
According to the counterflow type cooling tower having the noise preventing structure of the present invention, by providing a noise preventing portion between the filling material and the sump tank, the cooling water passing through the filling material flows down the noise preventing part to block the occurrence of noise and to prevent noise Since the cooling water is cooled again in the unit, the effect of increasing the cooling efficiency is exerted.

Description

Counter flow type cooling tower having noise reduction structure

The present invention relates to a counterflow type cooling tower having a noise preventing structure, and more particularly, to a noise preventing unit between a filler and a water collecting tank, which includes a noise preventing structure that can prevent noise from occurring when a coolant falls. It relates to a counterflow cooling tower.

Generally, a cooling tower is a device for lowering the temperature of high-temperature cooling water used for cooling in an indoor unit of a centralized cooling system, that is, an indoor air-conditioner. It is an open type and a closed circuit type which lower the temperature of cooling water by heat transfer, Evaporation of evaporated water sprayed on cooling water There are two types of closed type which lower the temperature of cooling water by using latent heat.

Among them, the open cooling tower is divided into a counter flow type cooling tower, a cross flow cooling tower, and a non-power cooling tower. Particularly, the counterflow cooling tower flows through the inlet opening at the lower side of the side wall, The cooling water is injected by the external air passing upward and the cooling water which is injected from the injection nozzle disposed above the filler and falls through the filler by the gravity against each other so that the cooling water which is generated when the outside air of relatively low temperature contacts with the cooling water of relatively high temperature It is based on the principle of cooling.

In a countercurrent cooling tower, air flows vertically upward, cooling water flows vertically downward, and air and cooling water contact each other to perform heat exchange. In a cross flow type cooling tower, air flows almost horizontally and cooling water flows vertically downward Flow.

1 is a cross-sectional view showing a countercurrent cooling tower according to the prior art.

As shown in FIG. 1, the counterflow type cooling tower 1 according to the prior art forms an outer frame, and an inlet port 11 through which air is introduced from the outside is formed at the lower side of the side, and the introduced air is discharged to the outside. Body 3 of a cylindrical or cuboid case having a discharge port 13 is formed on the upper portion, and the fan (5) is installed in the upper portion of the body (3) to allow the outside air to flow into the body (3) to be discharged to the outside And, the injection nozzle (7) for injecting the cooling water circulated from the air conditioning equipment (not shown) to the injection pipe (15), and the filling material for absorbing the cooling water is provided to the lower portion of the injection nozzle (9, Filler (filler), and the sump (19) for storing the water droplets falling through the filler (9), the cooling nozzle is prevented from scattering the coolant to the outside by the outside air discharged to the injection nozzle (7) The eliminator 17 is installed.

The fan 5 is installed at the discharge port 13 at the upper end of the body 3 and sucks the ambient air in the direction of the arrow through the suction port 11 and discharges the air through the discharge port 13 to the outside. A plurality of the injection nozzles 7 are installed in the injection pipe 15 disposed between the filler 9 and the eliminator 17 so as to be introduced into the indoor air conditioner 10 of the central cooling system through the injection pipe 15 Is injected onto the filler (9).

Here, the eliminator 17 serves as a kind of mesh filter to filter out dust particles or large blisters that have fallen from the filler. Finally, the filler 9 is disposed between the injection nozzle 7 and the outside air inlet port 11 to disperse the cooling water injected from the injection nozzle 7 to interfere with the falling of the cooling water or to form a water film in contact with the vertical film surface So that the contact surface with the outside air can be maximized to allow the hot water to easily radiate heat.

When the fan 5 is operated, external air flows in through the inlet 11, passes through the filler 9, and is discharged to the outside through the discharge port 13. The cooling water in the high temperature state flows through the injection tube 15 and is injected through one or more injection nozzles 7 provided in the injection tube 15 to be cooled by contact with the air and passes through the filler 9, And is collected by the water collecting tank 19.

In the countercurrent cooling tower 1, the flow direction of the air and the cooling water is opposite to each other, and the heat exchange is performed to cool the cooling water. In order to allow the air to flow smoothly through the filler, A space portion 18 is provided. That is, the filler 9 is installed above the water collecting tank 19, away from the water collecting tank 19.

In the conventional counterflow cooling tower (1), the filler (9) is spaced apart from the sump (19) to the upper portion, so that the coolant directly contacts the air while flying to the space portion (18) and scatters with air outside. There was a problem. In particular, there was a problem that the noise is increased by the coolant droplets dropping the space 18, there is a problem that the cooling efficiency is not large because the cooling water is cooled only in the filler (9).

The present invention has been made to solve the above problems, by providing a noise prevention portion between the filling material and the sump tank so that the coolant passing through the filling material flows down the noise prevention part to block the occurrence of noise, in the noise prevention part By cooling the cooling water again, it is to provide a counterflow type cooling tower having a noise preventing structure that can increase cooling efficiency.

In order to achieve the above object, the counterflow type cooling tower having the noise preventing structure of the present invention includes a filling material, a sump collecting water for the cooling water passing through the filling material, and a lower portion of the filling material, and at least one noise preventing unit. It comprises a noise prevention portion, wherein the noise prevention portion is formed concave with respect to the falling direction of the falling coolant, and a pre-collecting member formed with at least one through hole, and extending to the lower portion of the through hole, the support member partially protruded to the top of the through hole It may be made of.

The preliminary catching member is connected to the first inclined member and the first inclined member inclined to one side, and the second inclined member inclined in a direction opposite to the first inclined member to form a recess together with the first inclined member. And an overflow prevention jaw connected to the second inclination member and inclined in the same direction as the first inclination member to form a recess together with the second inclination member.

A portion of the support member protruding above the through hole may be a flow passage part for designating a flow direction of the cooling water.

The flow passage part protrudes to an upper portion of the through hole, and the through hole may be divided into a first discharge groove and a second discharge groove based on the flow passage.

The transverse length of the aperture may correspond to 70% to 75% of the transverse length between the aperture and the aperture.

The first inclined member may be inclined at 44 degrees to 46 degrees with respect to the horizontal axis.

According to the counterflow type cooling tower having the noise preventing structure of the present invention as described above, by providing a noise preventing portion between the filling material and the sump tank so that the coolant passing through the filling material flows down the noise preventing part to generate noise. It blocks and cools the coolant again in the noise protection unit, thereby increasing the cooling efficiency.

1 is a cross-sectional view showing a conventional counterflow cooling tower,
Figure 2 is a cross-sectional view showing a counterflow cooling tower having a noise prevention structure according to an embodiment of the present invention,
3 is a perspective view showing a noise prevention unit according to an embodiment of the present invention;
Figure 4 is a perspective view showing a noise prevention unit forming a noise prevention unit according to an embodiment of the present invention,
5 is a cross-sectional view showing a noise prevention unit according to an embodiment of the present invention;
Figure 6 is a partial plan view showing a noise prevention unit according to an embodiment of the present invention,
7 is a cross-sectional view showing an example of installation of a noise prevention unit according to an embodiment of the present invention;
8 is a perspective view showing a state in which the coolant flows to the noise prevention unit according to an embodiment of the present invention;
9 and 10 are cross-sectional views showing a state in which the coolant flows to the noise prevention unit according to an embodiment of the present invention;
11 is a graph showing the cooling efficiency due to the noise prevention unit according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

Figure 2 is a cross-sectional view showing a counterflow cooling tower having a noise prevention structure according to an embodiment of the present invention, Figure 3 is a perspective view showing a noise prevention unit according to an embodiment of the present invention, Figure 4 is an embodiment of the present invention 5 is a cross-sectional view illustrating a noise prevention unit according to an embodiment of the present invention, and FIG. 6 is a partial plan view of the noise prevention unit according to an embodiment of the present invention. 7 is a cross-sectional view showing an installation example of a noise prevention unit according to an embodiment of the present invention.

Hereinafter, a direction in which the first inclined member 125 of FIG. 6 is extended is referred to as a horizontal direction, and a direction perpendicular to the direction in which the first inclined member 125 is extended is referred to as a vertical direction.

As shown in FIG. 2, the counter-flow cooling tower 100 having the noise prevention structure according to the exemplary embodiment of the present invention has a suction port 111 formed at a lower portion thereof and a discharge hole 113 formed at an upper portion thereof. Is installed in the body 103, the outside air flows through the distribution pipe 115 is installed in the body 105, the fan 105 is operated so that the outside air is introduced into the inlet 111 and discharged to the outside through the discharge port 113 One or more injection nozzles 107 for spraying the coolant, the filler 109 installed under the injection nozzle 107, and the upper portion of the injection nozzle 107 to prevent water from scattering with the air. It consists of a water collecting tank 119 in which the coolant falling through the eliminator 117 and the filling material 109 is collected, and a space 108 is formed between the filling material 109 and the water collecting tank 119.

In addition, the filler 109 is spaced apart from the sump 119 and installed above the sump 119.

In FIG. 2, reference numeral 110 denotes an indoor air conditioner of the central cooling system.

The space 108 formed between the water collecting tank 119 and the filling material 109 is provided with a noise preventing part 120 for preventing (suppressing) noise generated by the coolant falling through the filling material 109. . The noise prevention part 120 prevents the coolant falling through the filler 109 from falling directly into the water collecting tank 119 to prevent the occurrence of noise and the scattering of the coolant by the direct drop of the coolant.

Noise prevention unit 120, as shown in Figure 3, consists of one or more noise prevention unit, the noise prevention unit is formed concave toward the cooling water falling through the filler 109, at least one through hole ( 129 is formed of a pre-collecting member and a support member 123 extending to the lower portion of the through hole 129. The coolant dropped into the preliminary collecting member is collected through the support member 123 through the through hole 129 to the collecting passage 119.

The support member 123 may be provided to protrude a portion to the upper portion of the through hole (129).

As shown in FIGS. 4 to 6, the preliminary catching member is disposed on the first inclined member 125 and the first inclined member 125 inclined to one side with respect to the dropping direction of the coolant falling through the filler 109. The second inclined member 127 is inclined in a direction opposite to the first inclined member 125 to form a concave portion together with the first inclined member 125.

An overflow prevention jaw 128 is formed at an end of the second inclined member 127 to be inclined in the same direction as the first inclined member 125 to form a recess together with the second inclined member 127.

In addition, at least one through-hole 129 and a plurality of through-holes 129 formed in the transverse direction between the first inclined member 125 and the second inclined member 127 are protruded, and extends downward to extend through-hole 129. At least one support member 123 for guiding the coolant falling through the).

In addition, the first inclined member 125 and the second inclined member 127 may be formed of a plate extending in a direction perpendicular to the dropping direction of the coolant.

For reference, in FIG. 3, reference numeral 121 denotes a support panel for fixing and supporting the support member 123, and a recess (not shown) for inserting the support member 123 into the support panel 121. By forming and inserting and fixing the support member 123, the noise prevention unit can be installed. Of course, the support member 123 may be directly installed in the water collecting tank 119, and the support member 123 may be provided with a heavy object at the bottom of the support member 123 so that the support member 123 may be installed upright without forming a recess, or may be welded or bolted to a nut. It is also possible to install using a.

The through hole 129 may be formed in a concave portion where the first inclined member 125 and the second inclined member 127 meet each other, may be formed in the first inclined member 125, or the second inclined member 127. Can also be formed. In addition, it may be formed over the first inclined member 125 and the second inclined member 127.

The support member 123 is installed below the through hole 129 along the horizontal direction. Therefore, when two or more through holes 129 are formed, two or more support members 123 are provided, and a gap is formed between the support members 123 to allow air to flow between the support members 123. .

In addition, as shown in Figure 6, the horizontal length (L1) of the through hole 129 is formed in a length corresponding to 70% to 75% of the horizontal gap (L2) between the through hole 129 and the through hole 129. Can be. For example, if L2 is formed at 110 mm, L1 may be formed at approximately 80 mm.

The support member 123 may be formed of a plate material, and may increase the surface area to increase the amount of cooling water that may flow down to the surface of the support member 123.

In addition, since the first inclined member 125 and the second inclined member 127 are installed to be inclined in opposite directions to each other, the first inclined member 125 and the second inclined member 127 are formed to be concave with each other, and the second inclined member 127 and the overflow prevention jaw 128 are also opposite to each other. Since they are installed at an angle, they are installed to form recesses with each other.

A portion of the support member 123 protruding upward of the through hole 129 is a flow passage part 124 which designates a flow direction of the cooling water.

The flow passage part 124 protrudes into the through hole 129 and protrudes to approximately the center of the through hole 129, and the through hole 129 has the first discharge groove 129 a and the first discharge groove based on the flow stop part 124. It is divided into two discharge grooves (129b).

As shown in FIG. 7, the longitudinal length of the first inclined member 125 may be greater than the longitudinal length of the second inclined member 127, and the longitudinal length of the overflow preventing jaw 128 may be the second length. It is preferable to form smaller than the longitudinal length of the inclined member 127. As such, the length of the first inclined member 125 is greater than the length of the second inclined member 127 in the longitudinal direction, and the length of the overflow prevention jaw 128 is in the longitudinal direction of the second inclined member 127. By forming smaller than the length of the direction, it is possible to be installed so that each of the neighboring noise prevention units overlap each other with respect to the coolant drop direction without contacting each other, and by installing so that the coolant does not directly fall into the sump tank 119 do.

In more detail with respect to the installation of the plurality of noise prevention units constituting the noise prevention unit 120, as shown in Figure 7, the plurality of noise prevention units are provided in parallel with each other, any one of the plurality of noise prevention unit The first slope member 125 of the noise prevention unit is installed to overlap the second slope member 127 and the overflow prevention jaw 128 of the neighboring noise prevention unit. In addition, the end of the second inclined member 127 inclined in the opposite direction to the first inclined member 125 is spaced so as not to contact the first inclined member 125 of the neighboring noise prevention unit. Therefore, a passage through which air can flow is formed between the first inclined member 125 and the second inclined member 127 of the neighboring noise preventing unit as shown in FIG. 7.

8 is a perspective view showing a state in which the coolant flows to the noise prevention unit according to an embodiment of the present invention, Figures 9 and 10 are cross-sectional views showing a state in which the coolant flows to the noise prevention unit according to an embodiment of the present invention, Figure 11 It is a graph showing the cooling efficiency due to the noise prevention unit according to an embodiment of the present invention.

When the noise preventing part 120 formed as described above is installed in the space 108 of the cooling tower 100 and the coolant passing through the filler 109 falls to the first inclined member 125, FIGS. 8 to 8. As shown in FIG. 10, the coolant flowing down the first inclined member 125 passes through the through hole 129 between the first inclined member 125 and the second inclined member 127. It continues to fall on the surface of the support member 123 installed at the bottom, and reaches the water collecting tank 119.

At this time, as shown in FIG. 8, the coolant falling to the upper portion where the through hole 129 of the preliminary collecting member is formed, as shown in FIG. 8, flows into the first discharge groove 129a, for example. Likewise, the coolant flowing along one side of the support member 123 to reach the sump tank 119 and falling to the upper portion where the through hole 129 is not formed is, for example, the coolant flowing along P2 is the second inclined member 127. ) And then flows into the second discharge groove 129b and flows along the other side of the support member 123 as shown in FIG. 10 to reach the sump tank 119.

In addition, even though a large amount of coolant is injected along the P1 while the amount of coolant injected from the cooling tower 100 increases, the coolant flowing along the P1 is flowed out by the flow passage part 124 protruding upwards to the second discharge groove 129b. It does not flow into the) and still flows into the first discharge groove (129a).

In addition, even if a large amount of coolant flows along the P2 and exceeds the second inclined member 127, the coolant does not leave the noise prevention unit by the overflow prevention jaw 128, but returns to the second discharge groove 129b. .

As such, when the coolant flows along both sides of the support member 123, the cooling water increases as the area of contact with the air increases, and the cooling water flows along the support member 123, thereby decreasing the flow rate of the coolant. Noise generated by free fall directly to 119 is suppressed.

For reference, Table 1 shows the processing flow rate according to the height of the flow passage portion 124.

Euro branch government height Processing flow rate result 10mm
30 liters / minute
A considerable amount of water flows over the Euroji government 15 mm The volume of goods passing through the Euro branch government is much reduced 20mm Almost no volume goes through the Euro branch government

As shown in Table 1, when the height of the flow passage portion 124 is formed to 20mm, it can be seen that there is almost no quantity of water passing through the flow passage portion 124, the height of the flow passage portion 124 is 20mm It is preferable to form, so that even if the amount of cooling water flowing along P1 increases, it may flow into the first discharge groove 129a without being introduced into the second discharge groove 129b.

Table 2 evaluates the treatment flow rate according to the longitudinal length of the overflow bump (128).

Overflow Brace Length 2nd inclination member length Processing flow rate
20 mm
25 mm

30 liters / minute 30 mm 35 mm
15 mm
25 mm 30 mm 35 mm

As shown in Table 2, the longitudinal length of the overflow barrier 128 is formed to be 20mm or 15mm, and as a result of the evaluation, it can be seen that the treatment flow rate is not changed, so the longitudinal length of the overflow barrier 128 is formed to 15mm. It would be desirable.

Table 3 shows the cooling efficiency according to the inclined angle (θ) of the first inclined member (125).

Tilt angle of the first inclined member Cooling efficiency 40 degrees 11% 45 degrees 14% 55 degrees 7%

As shown in Table 3 and Figure 11, it can be seen that the inclination angle of the first inclined member 125 is the best cooling efficiency at 45 degrees.

Here, the temperature of the cooling water falling from the filler 109 is referred to as the initial temperature (T1), the temperature of the cooling water collected in the water collecting passage 119 is called the late temperature (T2), the temperature difference (T1-T2) between T1 and T2 When is set to ΔT, the cooling efficiency (%) with respect to T1 can be calculated as (ΔT / T1) x 100.

Therefore, when the first inclination member 125 is 45 degrees, it indicates that the temperature difference between the initial temperature T1 and the late temperature T2 of the cooling device is the largest. As shown in FIG. 5, the first inclination member 125 The inclination angle? Is formed to be inclined at 45 degrees with respect to the horizontal axis H, so that the cooling efficiency is the best.

In the above description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto, and a person having ordinary skill in the art to which the present invention pertains does not depart from the technical spirit of the present invention. It will be readily appreciated that various substitutions, modifications and variations can be made.

123: support member 125: first inclined member
127: second inclined member 128: overflow bump
129: through

Claims (6)

A filler 109, a water collecting tank 119 through which the coolant passing through the filler 109 is collected, and a noise preventing part 120 positioned below the filler 109 and made of at least one noise preventing unit; The noise prevention part 120 is formed to be concave with respect to the falling direction of the falling coolant, and comprises a pre-collecting member having one or more through holes 129 and a support member 123 extending below the through hole 129. ; The preliminary collecting member is connected to the first inclined member 125 and the first inclined member 125 inclined to one side, and is inclined in a direction opposite to the first inclined member 125 to allow the first inclined member ( The second inclined member 127 and the second inclined member 127 together with the second inclined member 127 are formed to be inclined in the same direction as the first inclined member 125. Opposite flow cooling tower having a noise prevention structure, characterized in that consisting of the overflow preventing jaw 128 to form a recess together. The counterflow cooling tower according to claim 1, wherein the overflow preventing jaw (128) is provided at an end of the second inclined member (127). According to claim 1 or claim 2, wherein a portion of the support member 123 is protruded to the upper portion of the through hole 129, a portion of the support member 123 protruding to the upper portion of the through hole 129 is directed to the flow direction of the coolant A counterflow cooling tower having a noise prevention structure, characterized in that the passage portion 124 to be specified. According to claim 3, The flow passage portion 124 is protruded to the upper portion of the through hole 129, the through hole 129 is the first discharge groove 129a and the second relative to the flow passage portion 124. Counterflow type cooling tower having a noise prevention structure characterized in that divided into the discharge groove (129b). The method of claim 1,
The transverse length of the through hole 129 is a counter-flow cooling tower having a noise prevention structure, characterized in that 70% to 75% of the transverse length between the through hole (129) and the through hole (129). The counterflow cooling tower having a noise preventing structure according to claim 1, wherein the first inclined member (125) is inclined at 44 degrees to 46 degrees with respect to the horizontal axis.

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