KR20160062511A - Cross flow type cooling tower and controlling method for the same - Google Patents

Abstract

The present invention relates to a cooling tower and a controlling method therefor. A cooling tower according to an embodiment of the present invention comprises: a casing having a first suction hole and a second suction hole, through which air exchanging heat with a cooling water in at least one side, and a discharge hole to discharge the air, which has exchanged heat with the cooling water, on the top surface thereof; a water supply unit located inside the casing to supply the cooling water exchanging heat with air; a blower unit to form an air flow by moving into and out of the casing to exchange heat with the cooling water; a first heat exchanger performing a dry type cooling of the cooling water supplied by the water supply unit with air sucked inside the casing through the first suction unit by the blower unit; a second heat exchanger performing a wet type cooling of the cooling water, which has gone through heat exchange in the first heat exchanger using the air sucked inside the casing through the first suction unit by the blower unit; a water collection unit to collect the air and cooling water, which has gone through heat exchange in the first heat exchanger, and the second heat exchanger, respectively; a plurality of first dampers and a plurality of second dampers to selectively open and close the first suction unit and the second suction unit; and a control unit to control operation of the supply unit, the blower unit, the plurality of first dampers, and the plurality of second dampers, wherein the control unit controls the plurality of first dampers and the plurality of second dampers to selectively control opening of the first suction unit and the second suction unit or a degree of opening of the first suction unit and the second suction unit to cool down the cooling water in the first heat exchanger in accordance with the amount of air required to cool down the cooling water or cool down the cooling water in the first heat exchanger and the second heat exchanger.

Description

TECHNICAL FIELD [0001] The present invention relates to cooling towers,

The present invention relates to a cooling tower and a control method thereof.

The cooling tower serves to cool the cooling water, for example, the air conditioner or the refrigerator, that is, the cooling water used for condensing the refrigerant flowing in the refrigeration cycle by bringing it into contact with air. In order to heat-exchange the high-temperature cooling water, such a cooling tower causes the cooling water to be blown into the air or to make the flowing cooling water come into contact with the air to be blown.

In such a cooling tower, components constituting a cooling tower, such as a water supply section, a blowing section, a filler, and a collecting section, are provided inside a casing defining an external appearance. The cooling water supplied from the water supply portion flows along the filler material, and the heat exchange with the air sucked into the casing by the driving of the air supply portion. As described above, the cooling water and the heat-exchanged air are discharged to the outside of the casing by continuous driving of the blowing section, and the cooling water heat-exchanged with the air is collected in the collecting section.

The cooling tower can be divided into an orthogonal flow type and a counter flow type according to the flow direction of air and cooling water. In the orthogonal flow type cooling tower, the flow direction of the air and the cooling water which are heat-exchanged in the filler material are orthogonal to each other. In the counterflow type, the flow direction of the air and the cooling water which are heat- Prior Art Documents 1 and 2 disclose orthogonal-type cooling towers and counterflow-type cooling towers according to the prior art, respectively. However, in the case of the conventional cross-flow type cooling tower and counterflow type cooling tower according to the related art, the same amount of air is sucked into the casing regardless of the temperature of the outdoor air to be heat-exchanged with the cooling water. Therefore, there is a possibility that the supercooling of the cooling water or unnecessary noise may occur due to excessive intake of air by more than the amount of air required for cooling the actual cooling water.

Prior Art Patent Document 1: Korean Patent Laid-Open Publication No. 2013-0096128 (title of invention: orthogonal type cooling tower) Prior Art Document 2: Korean Patent Laid-Open Publication No. 2013-0105779 (entitled: Counterflow type cooling tower)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a cooling tower and a control method thereof that are configured such that a quantity of air required for cooling the cooling water can be sucked into the casing .

According to an aspect of the present invention, there is provided a cooling tower for cooling a refrigerant flowing through a heat exchange cycle and a heat-exchanged cooling water, comprising: first and second A casing in which an air inlet is formed on at least one side surface and an air outlet through which heat exchanged air with the cooling water is discharged is formed on the upper surface; A water supply unit located inside the casing and supplying cooling water to be heat-exchanged with air; A blowing unit for forming a flow of air that is heat-exchanged with the cooling water while being flowed into and out of the casing; A first heat exchanger for performing a dry cooling of the cooling water supplied by the water supply portion by the air sucked into the casing through the first air intake port by the air flow-rich portion; A second heat exchanger for performing wet cooling of the cooling water heat-exchanged in the first heat exchanger by the air sucked into the casing through the second intake port by the blowing unit; A collecting part for collecting cooling water heat-exchanged with air in the first and second heat exchangers; A plurality of first and second dampers selectively opening and closing the first and second intake ports, respectively; And a control unit for controlling operations of the water supply unit, the blowing unit, and the first and second dampers. Wherein the first and second air inlets are selectively opened and closed so that cooling water is cooled in the first heat exchanger or the first and second heat exchangers according to the amount of air required for cooling the cooling water, Or controls the operation of the first and second dampers so that the openings of the first and second intake ports are adjusted.

In one aspect of the embodiment of the present invention, the controller controls the first and second dampers so that the second inlet is selectively opened when a predetermined first reference time elapses after the first inlet is opened in the starting step And controls the operation.

In one aspect of the embodiment of the present invention, the first reference time period is a time period during which the first reference time period is longer than the first reference time period, based on at least one of conditions of the cooling water temperature, the outdoor temperature, and the temperature of the refrigerant exchanged with the cooling water The temperature and the relative humidity of the air to be discharged are set so as to be adjusted within a range in which the white smoke phenomenon is prevented.

In one aspect of the embodiment of the present invention, in the stopping step, when the second air inlet is opened, the first air inlet is shielded when a predetermined second reference time elapses after the second air inlet is shielded And controls the operation of the first and second dampers.

In one aspect of the embodiment of the present invention, the second reference time period is a time period during which the refrigerant is discharged to the outside of the casing through the exhaust port in accordance with at least one of conditions of the temperature of the cooling water, So that the relative humidity of the air to be blown out is controlled within a range in which the white smoke phenomenon is prevented.

In one aspect of the embodiment of the present invention, the opening degree of the first and second intake ports is adjusted by adjusting the angles of the first and second dampers with respect to the first and second intake ports.

In an aspect of the embodiment of the present invention, the adjustment of the opening degree of the first and second intake ports is performed by adjusting the number of the first and second dampers to be opened.

In an aspect of the embodiment of the present invention, the water supply unit includes: a first water supply unit for supplying cooling water to the first heat exchanger; And a second water supply unit for supplying the cooling water, which is dry-cooled in the first heat exchanger, to the second heat exchanger; .

One aspect of the cooling tower control method according to the embodiment of the present invention is the cooling tower control method for controlling the cooling tower according to any one of claims 1 to 8, wherein: the control unit controls the opening of the first intake port, And controlling operations of the first and second dampers to open and close the second air inlet, The control unit may perform a dry cooling process with the air sucked into the casing through the first suction port in the first heat exchanger or may be sucked into the casing through the first suction port in the first heat exchanger, A cooling step of controlling the operation of the water supply unit and the blowing unit so that wet cooling of the air sucked into the casing through the second air inlet port is sequentially performed; And a control step of controlling the operation of the first and second dampers so that the water supply unit and the blowing unit stop and the first intake port is shielded or the first and second intake ports are shielded; Wherein the control unit controls the first and second heat exchangers so that cooling water is cooled in the first heat exchanger or the first heat exchanger and the second heat exchanger in accordance with the amount of air required for cooling the cooling water, The operation of the first and second dampers is controlled so that the inlet port is selectively opened or closed or the opening of the first and second inlet ports is adjusted.

In one aspect of the embodiment of the present invention, in the startup step, when the first and second air inlets are opened, when the predetermined first reference time elapses after the first air inlets are opened, And controls the operation of the first and second dampers so that the intake port is opened.

In one aspect of the embodiment of the present invention, the first reference time is discharged to the outside of the casing through the exhaust port in accordance with at least one of conditions of the cooling water temperature, the outdoor temperature, and the temperature of the refrigerant to be heat- The relative humidity of the air is set to be adjusted within a range in which the white smoke phenomenon is prevented.

In one aspect of the embodiment of the present invention, in the stopping step, when the first and second air inlets are shielded, when the predetermined second reference time elapses after the second air inlets are opened, And controls the operation of the first and second dampers so that the intake port is opened.

In one aspect of the embodiment of the present invention, the second reference time is discharged to the outside of the casing through the exhaust port in accordance with at least one or more conditions of the temperature of the cooling water, the outdoor temperature, and the temperature of the refrigerant to be heat- The relative humidity of the air is set to be adjusted within a range in which the white smoke phenomenon is prevented.

In one aspect of the embodiment of the present invention, in the cooling step, the control unit controls the opening degree of the first and second intake ports by adjusting the angles of the first and second dampers with respect to the first and second intake ports, do.

In one aspect of the embodiment of the present invention, in the cooling step, the control unit adjusts the opening degree of the first and second intake ports by adjusting the number of the first and second dampers being opened.

In the cooling tower and its control method according to the embodiment of the present invention, the amount of air sucked into the casing according to environmental conditions such as the temperature of the cooling water and the outdoor temperature and passed through the first and second heat exchangers, do. Therefore, according to the embodiment of the present invention, it is possible to minimize the generation of white smoke and noise during cooling of the cooling water and cooling of the cooling water more efficiently.

1 is a longitudinal sectional view showing a cooling tower according to a first embodiment of the present invention;
Fig. 2 is a schematic diagram showing a first embodiment of the present invention. Fig.
3 is a control flowchart showing a cooling tower control method according to the first embodiment of the present invention.
4 is a longitudinal sectional view showing the flow of cooling water and air in a state in which the first damper is opened in the first embodiment of the present invention.
5 to 7 are longitudinal sectional views showing the flow of cooling water and air in a state in which the first and second dampers are opened in the first embodiment of the present invention.
8 is a longitudinal sectional view showing a cooling tower according to a second embodiment of the present invention.

Hereinafter, the structure of the cooling tower according to the first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a vertical sectional view showing a cooling tower according to a first embodiment of the present invention, and FIG. 2 is a schematic view showing the first embodiment of the present invention.

1 and 2, the cooling tower 1 according to the present embodiment includes a casing 100, a water supply unit 200, a blowing unit 300, at least one first and second heat exchangers 410, A plurality of first and second dampers 610 and 620, and a controller 700. The first and second dampers 610 and 620 may include a plurality of first and second dampers 420 and 420, The casing (100) defines a predetermined space in which the components constituting the cooling tower (1) are installed. The water supply unit 200 supplies cooling water to be heat-exchanged, and the air-blowing unit 300 flows air to be heat-exchanged with the cooling water. The first and second heat exchangers 410 and 420 are provided to selectively exchange heat between cooling water supplied by the water supply unit 200 and air flowing through the air supply unit 300, The collecting part 500 collects the cooling water heat-exchanged in at least one of the first and second heat exchangers 410 and 420. The first and second dampers 610 and 620 selectively allow air to be sucked into the casing 100. The controller (700) controls the operation of the cooling tower (1).

More specifically, the casing 100 is formed in a predetermined shape, for example, a hexahedron shape. The casing (100) is provided with intake ports (110) and (120) and an exhaust port (130). The intake ports 110 and 120 and the exhaust port 130 are places where air enters and exits to the inside and outside of the casing 100. In the present embodiment, the intake ports 110 and 120 include first and second intake ports 120. The first intake port 110 is located on the upper side of both sides of the casing 100 and the second intake port 120 is positioned below both sides of the casing 100 corresponding to the lower portion of the first intake port 110. [ do. The exhaust port (130) is located at the center of the upper surface of the casing (100).

A fan stack 140 is provided on the upper surface of the casing 100. The fan stack 140 serves to guide the air exhausted through the exhaust port 130. The fan stack 140 may be formed as a polyhedron that extends upward by a predetermined length from the upper surface of the casing 100 and has an open top and bottom, for example, a cylindrical shape.

The water supply unit 200 includes two water supply tanks 201 and a plurality of water supply nozzles 202. The water supply tank 201 is a place where the cooling water to be heat-exchanged with air is stored. The water supply tank 201 may be positioned on both sides of the upper portion of the casing 100 corresponding to the upper portion of the first air inlet 110. The water supply nozzle (202) injects cooling water stored in the water supply tank (201) toward the first heat exchanger (410). Of course, the water supply nozzle 202 may be omitted, and the cooling water may be injected by a plurality of water supply holes (not shown) formed on the bottom surface or both sides of the water supply tank 201.

Meanwhile, the blowing unit 300 includes a blowing fan 310 and a blowing motor 320. The air blowing fan 310 serves to flow air into and out of the casing 100. That is, when the blowing fan 310 rotates, the air is sucked into the casing 100 through the inlet ports 110 and 120 to exchange heat with the cooling water, and the air exchanged with the cooling water flows through the exhaust port 130, To the outside of the casing (100). As the blowing fan 310, for example, an axial flow fan may be used. The blowing motor 320 provides a driving force for rotating the blowing fan 310. The blowing fan 310 may be located inside the fan stack 140 and the blowing motor 320 may be installed on the inside or outside of the fan stack 140 or inside or outside the casing 100.

The first heat exchanger 410 is positioned in the lower portion of the water supply tank 201 so as to be adjacent to the first air inlet 110 in the horizontal direction. In the first heat exchanger 410, the cooling water supplied from the water supply unit 201 and the air sucked into the casing 100 through the first intake port 110 are heat-exchanged. In this embodiment, a plurality of coolant passages (not shown) communicating with the first heat exchanger 410 in the upper and lower directions and a plurality of air passages (not shown) communicating with the right and left pass through each other. The cooling water flow path is a place where the cooling water supplied from the water supply unit 200 flows vertically and the air is sucked into the casing 100 through the first suction port 110, Is the place to be. Therefore, the cooling water flowing through the cooling water flow path and the air flowing through the air flow path are heat-exchanged through the first heat exchanger 410, whereby the cooling water is dry-cooled

The second heat exchanger (420) is positioned in the lower portion of the first heat exchanger (410) so as to be horizontally adjacent to the second air inlet (120). In the second heat exchanger 420, the cooling water heat-exchanged with the air in the first heat exchanger 410 and the air sucked into the casing 100 through the second air inlet 120 are heat-exchanged. In the second heat exchanger 420, the cooling water heat-exchanged in the first heat exchanger 410 and the air sucked into the casing 100 through the second air inlet 120 are in direct contact with each other, Wet-cooled.

The collecting unit 500 includes a collecting tank 510. The water collecting tank 510 is a place where substantially the cooling water heat-exchanged with the air is collected in at least one of the first and second heat exchangers 410 and 420 and is disposed below the second heat exchanger 420 And may be positioned below the corresponding casing (100).

Meanwhile, the first and second dampers 610 and 620 selectively open or close the first and second air inlets 120, respectively, or adjust the opening thereof. More specifically, the first damper 610 is installed on the first air inlet 110 so as to be rotatable about a pivot axis in the horizontal direction so as to be individually adjustable in angle. The second damper 620 is installed on the second intake port 120 so as to be rotatable about a pivot axis in the horizontal direction so as to be individually adjustable in angle.

The control unit 700 controls the operation of the cooling tower 1, that is, the operation of the water supply unit 200, the blowing unit 300, and the first and second dampers 610 and 620. Particularly, in the present embodiment, the controller 700 controls the temperature of the cooling water in the first heat exchanger 410 and the cooling water in the first and second heat exchangers 410 and 420 And controls the operation of the first and second dampers 610 and 620 so that heat exchange of air is performed. That is, when the cooling tower 1 is stopped, that is, when heat exchange between the cooling water and the air is not performed in the first and second heat exchangers 410 and 420, And controls the operation of the first and second dampers 610 and 620 so that the second intake port 120 is shielded. When the cooling water and the air sucked into the casing 100 through the first inlet port 110 are heat-exchanged only by the first heat exchanger 410, the controller 700 controls the first inlet port 110 And controls the operation of the first and second dampers 610 and 620 so that the second intake port 120 is shielded. When the cooling water and the air sucked into the casing 100 through the first and second air inlets 120 are exchanged by the first and second heat exchangers 410 and 420, 700 control the operation of the first and second dampers 610, 620 such that the first and second air inlets 120 are opened.

That is, in this embodiment, when the cooling tower 1 operates, that is, when cooling of the cooling water is required, the first damper 610 necessarily opens the first intake port 110, The damper 620 is controlled by the controller 700 to selectively open or close the second intake port 120 or adjust the opening of the second intake port 120 according to the amount of air required for cooling the cooling water. In other words, the controller 700 controls the first and second dampers 110 and 120 so that only the first intake port 110 is opened or the first and second intake ports 120 are opened according to the amount of air required for cooling the cooling water. (610) and (620). Here, the 'amount of air required to cool the cooling water' can be calculated according to the environmental conditions. That is, the controller 700 controls the amount of cooling water required for cooling the cooling water into the casing 100 through the first intake port 110 according to environmental conditions such as the temperature of the cooling water, the temperature outside the room, When it is determined that air is sucked, the operation of the second damper 620 is controlled so that the second suction port 120 is blocked. However, if it is determined that the amount of air necessary for cooling the cooling water can not be sucked into the casing 100 through the first intake port 110, the controller 700 controls the second intake port 120, The operation of the second damper 620 is controlled.

The control unit 700 controls the angle of the second damper 620 or the number of the second damper 620 to be opened or closed according to the amount of air required for cooling the cooling water, The opening degree can be adjusted. For example, the controller 700 may increase or decrease the opening of the second intake port 120 by increasing or decreasing the angle of the second damper 620 with respect to the second intake port 120. As another example, the controller 700 may increase or decrease the opening of the second air inlet 120 by increasing or decreasing the number of the second dampers 620 that are opened.

In the present embodiment, the control unit 700 controls the first damper 610 to open the first intake port 110 at the start of the operation of the cooling tower 1, The operation of the first and second dampers 610 and 620 is controlled so that the second damper 620 selectively opens the second intake port 120 after one reference time elapses. When the operation of the cooling tower 1 is terminated, the controller 700 controls the second damper 620 to block the second intake port 120, And controls the operation of the first and second dampers 610 and 620 so that the first damper 610 shields the first intake port 110. This is to prevent white smoke due to an increase in the relative humidity of air during the discharge of the air through the exhaust port 130. That is, in the operation start stage of the cooling tower 1, the wet cooling of the cooling water in the second heat exchanger 420 is started relatively later than the dry cooling of the cooling water in the first heat exchanger 410, So that only the humid air that has been wet-cooled by the cooling water in the second heat exchanger (420) is prevented from being discharged to the outside of the casing (100) through the exhaust port (130). On the contrary, in the operation termination step of the cooling tower 1, the wet cooling of the cooling water in the second heat exchanger 420 is stopped relatively earlier than the dry cooling of the cooling water in the first heat exchanger 410, The wet air cooled by the cooling water in the second heat exchanger (420) is prevented from being discharged to the outside of the casing (100) through the exhaust port (130). The 'first and second reference times' will be set within a range in which whitening can be prevented according to environmental conditions.

Hereinafter, a cooling tower control method according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a control flow chart showing a cooling tower control method according to the first embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing the flow of cooling water and air in a state in which the first damper is opened in the first embodiment of the present invention And FIGS. 5 to 7 are vertical cross-sectional views showing the flow of cooling water and air in a state in which the first and second dampers are opened in the first embodiment of the present invention.

3, when the operation of the cooling tower 1 is started, the controller 700 controls the operation of the first damper 610 so that the first intake port 110 is opened. When the operation of the cooling tower 1 is started, the control unit 700 controls the blowing unit 300 and the water supplying unit 200 to operate simultaneously with or before or after the operation of the first damper 610. 4, air is sucked into the casing 100 through the first intake port 110 by the operation of the air flow-up unit 300, and air is sucked from the water supply unit 200 through the first heat exchange The cooling water is supplied to the first heat exchanger (410), so that the cooling water and the air are heat-exchanged in the first heat exchanger (410), thereby cooling the cooling water.

Next, the controller 700 determines whether the first reference time has elapsed after the first damper 610 opened the first inlet 110. In operation S30, As described above, to prevent white smoke, and can be set differently according to various environmental conditions such as the temperature of the cooling water and the temperature of the outdoor air. For example, if the temperature of the cooling water and the outdoor temperature difference are relatively large, the first reference time may be set relatively long, and in the opposite case, the first reference time may be set relatively short.

When the first damper 610 determines that the first reference time has elapsed after the first damper 610 has opened the first damper 110 in step 30, (S40) In step S40, the necessity of opening the second intake port 120 may be determined according to the amount of air required for cooling the cooling water calculated according to the environmental condition .

Next, if it is determined in step 40 that the second intake port 120 needs to be opened, the controller 700 controls the operation of the second damper 620 so that the second intake port 120 is opened The control unit 700 controls the opening degree of the second intake port 120 by adjusting the angle of the second damper 620 and the number of the second dampers 620 to be opened. have. 5 to 7, when the second intake port 120 is opened, air is sucked into the casing 100 through the second intake port 120. [ The air sucked into the casing 100 through the second suction port 120 is heat-exchanged in the second heat exchanger 420 with the cooling water that is dry-cooled in the first heat exchanger 410, Lt; / RTI > At this time, the relatively humid air used for the wet cooling with the cooling water in the second heat exchanger (420), together with the relatively dry air used for the dry cooling with the cooling water in the first heat exchanger (410) And is discharged to the outside of the casing (100) through the cap (130). Therefore, the white smoke can be prevented from being caused by the relative humidity of the air discharged through the exhaust port 130.

The control unit 700 determines whether the cooling tower 1 is stopped or not in step S70. The cooling tower 1 is stopped when a signal for stopping the cooling tower 1 is input or when an environmental condition Therefore, it can be judged according to the necessity of cooling of the cooling water.

If it is determined in step 70 that the cooling tower 1 is to be stopped, the controller 700 controls the operation of the second damper 620 so that the second intake port 120 is blocked. (S80). Therefore, the cooling water is cooled in the first heat exchanger 410, but the cooling water is not wet-cooled in the second heat exchanger 420. That is, when the second intake port 120 is shielded, the relatively dry air is discharged to the outside of the casing 100 through the exhaust port 130, thereby preventing the white smoke phenomenon.

Next, the controller 700 determines whether a predetermined second reference time has elapsed after the second damper 620 is shut off (S80). Here, the second elapsed time may be the first elapsed time May be set in a similar manner.

If it is determined that the second elapsed time has elapsed, the controller 700 controls the operation of the first damper 610 so that the first intake port 110 is blocked. (S90) The controller 700 May control the water supply unit 200 and the blowing unit 300 to stop simultaneously with or before or after the operation of the first damper 610 to block the first air intake opening 110. [

Hereinafter, a cooling tower according to a second embodiment of the present invention will be described in detail with reference to the accompanying drawings.

8 is a longitudinal sectional view showing a cooling tower according to a second embodiment of the present invention. The same components as those of the first embodiment of the present invention among the constituent elements of the present embodiment are referred to with reference to FIG. 1 and FIG. 2, and a detailed description thereof will be omitted.

Referring to FIG. 8, in the cooling tower 2 according to the present embodiment, the water supply unit 200 includes first and second water supply units 210 and 220. The first water supply unit 210 supplies cooling water to be heat-exchanged with air in the first heat exchanger 410 and the second water supply unit 220 supplies cooling water to be heat-exchanged with air in the second heat exchanger 420. [ . The first water supply unit 210 includes a first water supply tank 211 and a first water supply nozzle 213. The second water supply unit 220 includes a second water supply tank 221, And a nozzle (223).

More specifically, the first water supply tank 211 is located above the first intake port 110, substantially inside the casing 100 corresponding to the upper chamber of the first heat exchanger 410, do. Cooling water to be heat-exchanged with air in the first heat exchanger (410) is stored in the first water supply tank (211). The first water supply nozzle 213 injects the cooling water stored in the first water supply tank 211 toward the first heat exchanger 410. Of course, the first water supply nozzle 213 may be eliminated by injecting cooling water through a plurality of first water supply holes (not shown) formed on the bottom surface or the lower ends of the first water supply tank 211 .

The second water supply tank 221 is disposed between the first and second intake ports 120 and substantially between the first and second heat exchangers 410 and 420, Respectively. Cooling water to be heat-exchanged with air in the second heat exchanger (420) is stored in the second water supply tank (221) after heat exchange with air in the first heat exchanger (410). The second water supply nozzle 223 injects the cooling water stored in the second water supply tank 221 toward the second heat exchanger 420. The second water supply nozzle 223 may be omitted when a second water supply hole (not shown) is formed in the second water supply tank 221, like the first water supply nozzle 213.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the above teachings. will be.

100: casing 110: first intake port
120: second intake port 130: exhaust port
140: Fan stack 200: Water supply part
201: water supply tank 202: water supply nozzle
300: blowing fan 310: blowing fan
320: blower motor 410: first heat exchanger
420: second heat exchanger 500:
510: water collecting tank 610: first damper
620: second damper 700:

Claims (15)

A cooling tower for cooling a refrigerant flowing through a heat exchange cycle and a heat exchanged cooling water, comprising:
A casing 100 formed on at least one side surface thereof with first and second air intake openings 120 through which air to be heat-exchanged with the cooling water is sucked, and an exhaust opening 130 through which heat-exchanged air is discharged;
A water supply unit 200 located inside the casing 100 and supplying cooling water to be heat-exchanged with air;
A blowing part 300 for forming a flow of air to be heat-exchanged with the cooling water while being in / out of the casing 100;
A first heat exchanger 300 for cooling the cooling water supplied by the water supply unit 200 by the air sucked into the casing 100 through the first air inlet 110 by the air supply unit 300, (410);
And a second heat exchanger (300) for performing wet cooling of the cooling water heat-exchanged in the first heat exchanger (410) by the air sucked into the casing (100) through the second intake port (120) (420);
A collecting part 500 for collecting cooling water heat-exchanged with air in the first and second heat exchangers 410 and 420;
A plurality of first and second dampers 610 and 620 for selectively opening and closing the first and second intake ports 120; And
A control unit 700 for controlling the operation of the water supply unit 200, the blowing unit 300, and the first and second dampers 610 and 620; Lt; / RTI >
The control unit 700 controls the first and second heat exchangers 410 and 420 so that the cooling water is cooled in the first heat exchanger 410 or the first and second heat exchangers 410 and 420 according to the amount of air required for cooling the cooling water. And the second damper (610) (620) so that the second intake port (120) is selectively opened or closed or the opening of the first and second intake ports (120) is adjusted.
The method according to claim 1,
The controller 700 controls the first and second dampers (not shown) to selectively open the second intake port 120 when a predetermined first reference time elapses after the first intake port 110 is opened in the start- 610) < / RTI >
3. The method of claim 2,
The first reference time may be an amount of air discharged to the outside of the casing 100 through the exhaust port 130 according to at least one of conditions of the cooling water temperature, the outdoor temperature, and the temperature of the refrigerant heat- Wherein the temperature and the relative humidity of the cooling tower are set so as to be adjusted within a range in which white smoke is prevented.
The method according to claim 1,
When the second intake port 120 is opened, the controller 700 controls the first intake port 110 when the second reference time elapses after the second intake port 120 is shut off, And controls the operation of the first and second dampers (610, 620) so that the first and second dampers (610, 620) are shielded.
5. The method of claim 4,
The second reference time may be determined based on at least one of the temperature of the cooling water, the temperature of the outdoor air, and the temperature of the refrigerant exchanged with the cooling water. Wherein the relative humidity is set to be adjusted within a range in which white smoke is prevented.
The method according to claim 1,
The adjustment of the openings of the first and second intake ports 120 is performed by adjusting the angles of the first and second dampers 610 and 620 with respect to the first and second intake ports 120.
The method according to claim 1,
The opening of the first and second air intake openings 120 is adjusted by adjusting the number of the first and second dampers 610 and 620 to be opened.
The method according to claim 1,
The water supply unit (200)
A first water supply unit 210 for supplying cooling water to the first heat exchanger 410; And
A second water supply unit 220 for supplying the cooling water, which is dry-cooled in the first heat exchanger 410, to the second heat exchanger 420; .
9. A cooling tower control method for controlling a cooling tower according to any one of claims 1 to 8, comprising:
The controller 700 controls the operation of the first and second dampers 610 and 620 to open the first intake port 110 or open and close the first and second intake ports 120, ;
The control unit 700 may perform a dry cooling operation with the air sucked into the casing 100 through the first intake port 110 in the first heat exchanger 410, And the air sucked into the interior of the casing 100 through the second inlet port 120. In this case, the indoor air is sucked into the casing 100 through the first air inlet 110, A cooling step of controlling the operation of the water supply part (200) and the blowing part (300) so that wet cooling is sequentially performed; And
The control unit 700 stops the water supply unit 200 and the blowing unit 300 to stop the first intake port 110 or the first and second intake ports 120, And a second damper (610) (620); Lt; / RTI >
In the cooling step, the controller 700 controls the cooling of the cooling water in the first heat exchanger 410 or the first and second heat exchangers 410 and 420 according to the amount of air required for cooling the cooling water. And controls the operation of the first and second dampers (610, 620) so that the first and second intake ports (120) are selectively opened or closed or the opening of the first and second intake ports (120) Cooling tower control method.
10. The method of claim 9,
When the first and second air inlets (120) are opened, the controller (700) controls the first air inlets (110) And controlling the operation of the first and second dampers (610, 620) so that the intake port (120) is opened.
11. The method of claim 10,
The first reference time may be a relative time of the air discharged to the outside of the casing 100 through the exhaust port 130 in accordance with at least one of conditions of the cooling water temperature, And the humidity is set to be adjusted within a range in which the white smoke phenomenon is prevented.
10. The method of claim 9,
In the stopping step, when the first and second air inlets (120) are shielded, when the predetermined second reference time elapses after the second air inlets (120) are opened, the controller And controlling the operation of the first and second dampers (610, 620) so that the intake port (110) is opened.
13. The method of claim 12,
The second reference time may be a relative time of the air discharged to the outside of the casing 100 through the exhaust port 130 in accordance with at least one of conditions of the cooling water temperature, And the humidity is set to be adjusted within a range in which the white smoke phenomenon is prevented.
10. The method of claim 9,
In the cooling step, the controller 700 adjusts the angles of the first and second dampers 610 and 620 with respect to the first and second air inlets 120 to adjust the angle of the first and second air inlets 120).
10. The method of claim 9,
In the cooling step, the controller 700 controls the number of openings of the first and second dampers 610 and 620 to adjust the opening of the first and second air inlets 120, .

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