KR20200075244A - Water supplying and spraying system for evaporative cooler and its operating method - Google Patents

Abstract

A purpose of the present invention is to provide a water injection system for an evaporative cooler, which is capable of lowering a failure rate and reducing water and electricity consumption while improving evaporative cooling performance by simplifying the structure of a water injection system; and an operating method thereof. To achieve the purpose, the water injection system, which is provided in an evaporative cooler including a heat exchange part in which a plurality of dry and wet channels having different types of air pass therethrough are alternately and repetitively placed, includes: a direct water supply part supplying direct water; a flowrate control part controlling a supply flowrate of the direct water flowing from the direct water supply part; a fine spray nozzle provided on a water supply pipe located above the heat exchange part to produce spray water from the direct water supplied to the water supply pipe to spray the spray water upwards; and a drain part naturally draining the water having passed through the wet channels.

Description

Water supplying and spraying system for evaporative cooler and its operating method

The present invention relates to a water spray system of an evaporative cooler and a method of operating the same, and more particularly, to a water spray system of the evaporative cooler and a method of operating the same, which simplifies the structure of the water spray system and improves the evaporative cooling performance. .

Air conditioning, which is a commonly used cooling and dehumidifying device, uses refrigerant, and is recognized as a major cause of ozone layer destruction and global warming due to leakage of refrigerant. In view of the problem of using the refrigerant, energy ventilation devices have been developed to reduce the ventilation load through sensible and latent heat transfer between indoor exhaust and outdoor intake air.

However, the conventional ventilation devices have a problem in that the latent heat recovery rate is significantly lower than the sensible heat recovery rate and thus cannot respond to an increase in cooling load. In consideration of the problems of the conventional energy ventilation device, a regeneration evaporative cooling technology has been developed.

Renewable evaporative cooling technology reduces the temperature of air by using the evaporative cooling effect of water, so it does not use refrigerants other than water, so it can solve the problems of the existing air conditioner and has the advantage of sufficiently reducing the cooling load. have.

Such an evaporative cooler is configured to alternately form a wet channel and a dry channel, and to supply cooled air to the room through the dry channel through heat exchange by evaporation in the wet channel.

Referring to FIG. 1, the conventional evaporative cooler 1 is composed of an evaporative cooler main body 10 and a water injecting device 20 for supplying water W to the main body 10.

The evaporative cooler body 10 is composed of a heat exchange section 11, an upper flow guide section 12, and a lower flow guide section 13.

Inside the main body 10, a plurality of dry and wet channels are partitioned by diaphragms and alternately arranged in front and rear directions, and water injected into the first air (indoor air and cold air) passing through the wet channels ( It is configured to cool the second air (suction air and supply air) passing through the dry channel using the latent heat of evaporation of W).

The upper flow path guide portion 12 forms a flow path of the first air flowing into the wet channel, and also forms a flow path of the second air passing through the dry channel, and the lower flow path guide portion 13 is the In addition to forming a flow path of the second air flowing into the dry channel, a flow path of the first air passing through the wet channel is formed.

As shown by the black arrow in FIG. 1, the first air flows into the interior of the upper flow guide part 12 through the upper part of the upper flow guide part 12 and then passes through the wet channel of the heat exchange part 11. Thus, it flows along a flow path that is exhausted to the outside through one side of the lower flow path guide portion 13.

At the same time, as shown by the white arrow in FIG. 1, the second air flows into the inside of the lower flow guide portion 13 through the other side of the lower flow guide portion 13, and then the dry channel of the heat exchange portion 10 It flows along a flow path that is supplied to the room through one side of the upper flow path guide portion 12 via.

The water injection device 20 includes a water tank 21, a circulation pump 22 for circulating water stored in the water tank 21, a water injection valve 23 for controlling the supply of water, and an upper flow path A plurality of water pipes (24; 24a, 24b) provided in the transverse direction on the upper side of the guide portion 12, and a plurality of nozzles (25) provided in the water pipe (24) for spraying water (W) downward It is configured to include.

The water injection device 20 of the conventional evaporative cooler is a configuration for circulating and reusing water. Since the water tank 21 and the circulation pump 22 must be provided, the structure of the water injection device 20 is As it is complicated, and the water tank 21 and the circulation pump 22 are installed, the volume and weight of the evaporative cooler 1 become large, and the frequency of failures increases due to the excessive number of parts, requiring frequent maintenance, and There is a problem that consumes a lot of power as the pump 22 is operated.

In addition, since the particle size of the water sprayed from the nozzle 25 is large and the spraying direction is directed downward, the water flows through the wet channel of the heat exchanger 11 at a fast flow rate, so a large amount of water is required for sufficient heat exchange. Since it has to be supplied, the consumption of water increases, and the water sprayed from the nozzle 25 directly hits the surface of the heat transfer plate of the evaporative cooler body 10, and the coating layer formed on the surface of the heat transfer plate is easily peeled off by the impact. There is a problem that durability is reduced.

In addition, since the water pipe 24 is made of a fixed structure, in order to uniformly supply water W to the entire area of the upper flow guide 12, the water pipe 24 must be installed in plurality, so this is also a water pouring device ( It becomes a factor that complicates the structure of 20).

In addition, when the evaporative cooler has not been used for a long time, foreign matter remains in the main water piping. When the main water supply and the evaporative cooler are operated while the foreign matter remains, water supply and evaporative cooling are smoothly performed by the foreign material. However, there is a problem in that the configuration for removing foreign substances remaining in the main water piping is insufficient in the water injecting apparatus of the conventional evaporative cooler.

In addition, when the outside temperature is low during the operation of the evaporative cooler, the evaporative cooler may be damaged by freezing, so in this case, it is necessary to stop the evaporative cooler and stop supplying water and drain the water, but the water supply device of the conventional evaporative cooler There is a problem in that the configuration for preventing damage caused by such freezing is incomplete.

Prior art related to the evaporative cooler is disclosed in Patent Publication No. 10-2016-0141016.

The present invention has been devised to solve the above-mentioned problems, and it simplifies the structure of the water injection system to reduce the failure rate, reduce water consumption and power consumption, and at the same time improve the evaporative cooling performance. The purpose is to provide a method.

Another object of the present invention is to provide a water spray system and an operation method of the evaporative cooler that can prevent contamination and freezing of the main water pipe and the evaporative cooler by smoothly removing foreign substances and water remaining in the main water pipe. .

The main water spray system of the evaporative cooler of the present invention for realizing the above-described object is the main water spray provided in the evaporative cooler including a heat exchange part in which a plurality of dry channels and wet channels alternately arranged through which different air passes. A system comprising: a direct water supply unit through which direct water is supplied; A flow rate control unit for controlling the supply flow rate of the direct water flowing from the direct water supply unit; A micro-injection nozzle provided in a water pipe located above the heat exchanger to spray water upward by generating direct water supplied to the water pipe as spray water; And a drainage part that naturally drains water that has passed through the wet channel.

The water pipe may be made of a single pipe.

The micro-injection nozzle may be provided in plurality at intervals along the longitudinal direction of the water pipe.

The micro-injection nozzle may be intensively arranged in the middle portion compared to both sides in the longitudinal direction of the water pipe.

The fine injection nozzle may be provided on the upper portion of the water pipe, and the water pipe may be provided to be rotatable in both directions in a predetermined angle range.

The flow control unit may be made of a positive pressure valve.

The flow control unit may be made of a constant flow valve.

The direct water supplied from the direct water supply unit is supplied to the main water pipe through a direct water inflow line and a direct water supply line, and the direct water inflow line is provided with the flow rate control unit and a direct water valve for controlling the inflow of the direct water, A drain line connected to the drain portion is branched between the direct water inflow line and the direct water supply line, and a drain valve for controlling the flow of drained water may be provided in the drain line.

Between the direct water supply line and the main water pipe, a first connection line and a second connection line connected in parallel may be additionally provided.

The drain line may be connected to a main drain line through which water passing through the wet channel of the evaporative cooler is drained, and the drain line and the main drain line may be connected to an integrated drain line connected to the drain.

The integrated drain line may be connected to a drain fan drain line for draining the water remaining in the extraction fan provided in the evaporative cooler.

When waiting for operation, the direct water valve may be closed and the drain valve may be configured to open.

In the dehumidification/cooling operation, the direct water valve may be opened and the drain valve may be configured to close.

When the foreign material is removed, the direct water valve and the drain valve may be configured to open.

In the operation of preventing the freezing of the evaporative cooler, the direct water valve may be closed and the drain valve may be opened.

The method of operating the water spray system of the evaporative cooler of the present invention includes: supplying direct water in a dehumidifying/cooling operation mode; Adjusting the supply flow rate of the direct water; Generating the supplied direct water as a spray water by a micro spray nozzle and spraying upward on the heat exchange part; And naturally draining water that has passed through the wet channel.

The operation method of the water spray system of the evaporative cooler of the present invention includes: determining whether the operation waiting time has elapsed from the start waiting time of the first set time in the foreign material removal operation mode; When the operation waiting time passes the first set time, the operation of removing foreign substances; Determining whether the foreign substance removal operation time has elapsed; And returning to an operation standby state when the foreign substance removal operation time passes a second preset time.

A method of operating a water spray system of an evaporative cooler of the present invention includes: when a dehumidification/cooling operation mode is selected in an operation standby state, starting a foreign substance removal operation; Determining whether the foreign substance removal operation time has elapsed; And the dehumidifying/cooling operation when the foreign substance removal operation time passes a second preset time.

The method of operating the water spray system of the evaporative cooler of the present invention comprises: comparing the outside temperature with the first set temperature in a dehumidifying/cooling operation state; When the outside air temperature is less than the first set temperature, freezing preventing operation; Comparing the outside air temperature and the second set temperature in the freezing prevention operation state; And releasing a freeze prevention operation when the outside temperature is equal to or greater than the second preset temperature.

According to the water spray system and its operating method of the evaporative cooler according to the present invention, it is possible to simplify the structure of the water injection system to lower the failure rate and reduce water consumption and power consumption.

In addition, the spray water is sprayed upward by the micro-jet nozzle to increase the scattering time of water particles, thereby improving heat exchange efficiency and evaporative cooling performance, and improving durability by minimizing peeling of the coating layer coated on the surface of the evaporative cooler body. Can.

In addition, by configuring the water pipe to rotate in both directions within a predetermined angle range, even if the water pipe is composed of a single pipe, spray water can be uniformly supplied to the entire area of the heat exchanger.

In addition, the operation standby state is continued for a certain period of time, or by performing a foreign matter removal operation in the step before starting the dehumidification/cooling operation in the operation standby state, the supply of direct water and the evaporative cooling are smooth, thereby improving the performance of the evaporative cooler. Can.

In addition, when the outside air temperature is less than the set temperature, it is possible to prevent damage caused by freezing of the evaporative cooler in advance by performing a freeze prevention operation.

1 is a view showing a water system of a conventional evaporative cooler,
2 is a view showing a water spray system of an evaporative cooler according to the present invention,
3 is a view showing the main water supply and drain line of the main water spray system of the evaporative cooler according to the present invention,
Figure 4 is a control block diagram of the water injection system of the evaporative cooler according to the invention,
Figure 5 is a flow chart showing the operation method of the water spray system of the evaporative cooler in the dehumidification / cooling operation mode,
6 and 7 is a flow chart showing the operation method of the water spray system of the evaporative cooler in the foreign material removal operation mode,
Figure 8 is a flow chart showing the operation method of the water spray system of the evaporative cooler in the freeze protection operation mode.

Hereinafter, the configuration and operation of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The evaporative cooler (2) to which the present invention is applied is composed of an evaporative cooler body (100) and a water spray system (200) for supplying water to the main body (100).

The evaporative cooler main body 100 is composed of a heat exchange unit 110, an upper flow guide portion 120, and a lower flow guide portion 130.

Inside the main body 100, a plurality of key channels and wet channels are partitioned by diaphragms and alternately arranged in front and rear directions, using the latent heat of evaporation of water poured into the first air passing through the wet channels. It is configured to cool the second air passing through.

The first air may be air that is introduced from the indoor through the indoor ventilation (RA) and is exhausted to the outdoors through the outdoor exhaust (EA), and the second air is sucked from the indoor through the indoor ventilation (RA). It may be air supplied to the room through the indoor air supply (SA).

The upper flow path guide part 120 forms a flow path of the first air flowing into the wet channel and also forms a flow path of the second air passing through the dry channel.

The lower flow guide portion 130 forms a flow path of the second air flowing into the dry channel and also forms a flow path of the first air that has passed through the wet channel.

As shown by the black arrow in FIG. 2, the first air (indoor air and cold air) flows into the interior of the upper flow guide portion 120 through the upper portion of the upper flow guide portion 120, and then the heat exchange portion ( It flows along the flow path exhausted to the outside through one side of the lower flow guide portion 130 via the wet channel of 110).

At the same time, as shown by the white arrow in FIG. 2, the second air (suction air and supply air) flows into the inside of the lower flow guide part 130 through the other side of the lower flow guide part 130, and then exchanges heat. It flows along the flow path that is supplied to the room through one side of the upper flow guide portion 120 via the dry channel of the portion 100.

The main water spray system 200 of the present invention includes a direct water supply unit 210 through which direct water (tap water) is supplied, and a flow rate adjustment unit 220 for controlling the supply flow rate of direct water flowing from the direct water supply unit 210, The water supply pipe 230 disposed in the horizontal direction on the upper side of the upper flow guide part 120 and the direct water supplied to the water pipe 230 provided in the upper part of the water pipe 230 is sprayed water (SW) It is configured to include a micro-injection nozzle 240 to spray upwardly generated by the furnace, and a drainage unit 250 for naturally draining water flowing through the wet channel of the heat exchanger 110.

The micro-injection nozzle 240 may be provided in plurality at intervals along the longitudinal direction of the water pipe 230. The micro-injection nozzle 240 is in communication with the main water pipe 230, the micro-injection nozzle 240 is formed so as to have a plurality of fine-sized holes facing upward but having various injection angles, the main water pipe ( The direct water supplied to the inside of 230) is generated into the sprayed water SW while passing through the micro-sized holes formed in the fine spray nozzle 240 and sprayed upward.

The micro-injection nozzle 240 is preferably disposed intensively in the middle portion compared to both sides in the longitudinal direction of the water pipe 230. According to this configuration, compared with the case where the micro-jet nozzle 240 is disposed in a uniform distribution in the entire area in the longitudinal direction of the water pipe 230, the length of the water pipe 230 having a large flow rate of direct water is high. When the micro-injection nozzle 240 is intensively arranged in the middle portion, the airflow time in which the sprayed water SW is scattered increases, so that the contact time between the sprayed water SW and the air can be increased, and as the sensible heat performance improves, the evaporative cooler The cooling performance of (1) can be improved.

As a configuration for simplifying the configuration of the water spray system 200, the water pipe 230 may be composed of one single pipe. In this case, the water pipe 240 is configured to be rotatable in both directions in a predetermined angle range by a driving means (not shown) such as a motor, through the micro-injection nozzle 240 provided on the top of the water pipe 230 By expanding the area where the sprayed water is sprayed, even if the main water pipe 230 is configured as a single pipe, the sprayed water SW can be uniformly supplied to the entire area of the upper surface of the upper flow guide 120.

The flow control unit 220 functions to adjust the flow rate and pressure of the direct water supplied to the micro-injection nozzle 240 through the water pipe 230 to be suitable for generating spray water.

In an embodiment, the flow control unit 220 may be composed of a constant pressure valve or a constant flow valve. In particular, when configured as a positive pressure valve, there is an advantage that the flow rate can be precisely controlled in a case where the flow rate of the direct water supplied is small.

2, the direct water supplied from the direct water supply unit 210 is supplied to the main water pipe 230 via the flow control unit 220, and the direct water flowing into the main water pipe 230 is a micro-injection nozzle. It is generated with fine-sized spray water (SW) through 240 and is sprayed to the upper space of the upper flow guide section 120, and the wet channel and the lower flow guide of the upper flow guide 120 and the heat exchange section 110 ( After flowing along the 130) is naturally drained through the drain 250.

Hereinafter, a drainage structure of the water injection system 200 of the present invention will be described with reference to FIGS. 2 and 3.

The direct water supplied from the direct water supply unit 210 is supplied to the main water pipe 230 through the direct water inflow line L1 and the direct water supply line L2.

The direct water inflow line L1 is provided with the flow rate control unit 220 and a direct water valve 261 for controlling the inflow of direct water. Between the direct water inlet line (L1) and the direct water supply line (L2) is connected by connection ports formed on both sides of the T-shaped first connector (262).

The upper end of the direct water supply line (L2) is connected to the lower port of the Y-shaped second connector 264, a pair of upper ports formed on the upper end of the second connector 264 is connected in parallel to the first A connecting line (L3) and a second connecting line (L4) are provided, and the first connecting line (L3) is connected to one end of the water pipe 230.

Water passing through the wet channel of the evaporative cooler is collected through the main drain line (L5), and the main drain line (L5) is connected to an integrated drain line (L6) connected to the drain 250.

A drain line L7 is connected to a lower port of the first connector 262, and a drain valve 263 is provided on the drain line L7. The drain line L7 is connected to the integrated drain line L6 through the main drain line L5.

The integrated drain line (L6) is connected to the extraction fan drain line (L8) for draining the water remaining in the extraction fan 140 provided in the evaporative cooler.

When the direct water valve 261 is opened, the flow path of the direct water inflow line L1 is opened and the direct water supplied from the direct water supply unit 210 is supplied to the main water pipe 230 side. When the direct water valve 261 is closed, the flow path of the direct water inflow line L1 is closed to block supply of direct water.

When the drain valve 263 is opened, the flow path of the drain line L7 is opened, and the direct water inflow line L1, the direct water supply line L2, the first connection line L3, the second connection line L4, And water remaining in the water pipe 240 may be drained through the drain line L7. When the drain valve 263 is closed, drainage of water through the drain line L7 is blocked.

When the drain valve 263 is opened, the first connection line L3 and the second connection line L4 connected in parallel are the direct water inflow line L1, the direct water supply line L2, and the first connection line L3. ), the second connection line (L4), and the water remaining in the water pipe 240 serves to smoothly drain through the drain line (L7). That is, when draining through the drain line (L7), since the drain valve 263 is opened, the outside air is connected to the second through the integrated drain line (L6) and the drain line (L7) and direct water supply line (L2) A small amount may be introduced into the line L4, and accordingly, a negative pressure may be prevented from occurring in the drain passage connected to the first connection line L3 and the direct water supply line L2 and the drain line L7. Therefore, water remaining in the drain passage can be smoothly drained without clogging.

On the other hand, referring to Figure 4, the water injection system 200 of the present invention, the mode selection unit 270 for setting the operation mode of the evaporative cooler 2, and the operation mode selected by the mode selection unit 270 It includes a control unit 280 for controlling the opening and closing operation of the direct water valve 261, the flow control unit 220 and the drain valve 263 according to.

The mode selector 270 may be selected from any one of a standby mode, a dehumidification/cooling operation mode, a foreign material removal operation mode, and a freeze prevention operation mode.

The operation standby mode is a mode in which the operation of the evaporative cooler 2 and the water spray system 200 is stopped, and the direct water valve 261 is closed and the drain valve 263 is controlled to be opened, thereby supplying direct water. Shut off and drain through the drain line (L7).

The dehumidification/cooling operation mode is a mode in which the evaporative cooler 2 and the water spray system 200 are operated, and the direct water valve 261 is opened and the drain valve 263 is controlled to be closed, thereby supplying direct water. And drainage through the drain line L7 is blocked.

The foreign material removal operation mode is a mode for discharging water and foreign substances remaining in the main water pipe when the operation standby state continues for a predetermined time or when the operation standby state is switched to dehumidification/cooling operation, the direct water valve 261 And the drain valve 263 are both controlled to open.

The freeze prevention operation mode is a mode for forcibly stopping the operation of the evaporative cooler 2 and the water spray system 200 and draining water when the outside air temperature is lower than the set temperature in the dehumidification/cooling operation state. The valve 261 is closed and the drain valve 263 is controlled to be open. The outside temperature can be obtained by measuring the outside temperature with an outside temperature sensor or by wired/wireless communication with an external server in which outside temperature information is stored.

Hereinafter, with reference to FIGS. 5 to 8, the operation method of the water spray system 200 of the evaporative cooler according to the present invention configured as described above will be described.

Referring to Figure 5, in the dehumidification / cooling operation mode, the operation method of the main water spray system of the evaporative cooler, the step of supplying direct water (S11), adjusting the supply flow rate of the direct water (S12), the supplied direct water Is generated as a spray water (SW) by the micro-injection nozzle 230 to spray upward on the upper flow path guide section (S13), and the natural water passing through the wet channel of the heat exchange section 110 And draining (S14).

Referring to Figure 6, in one embodiment, in the foreign matter removal operation mode, the operation method of the water spray system of the evaporative cooler, in the state of operation standby (S21), the operation standby time from the start of operation standby is the first set time Step S22 of determining whether or not has elapsed. If the operation waiting time has not elapsed, the operation waiting state is maintained, and when the operation waiting time has passed the first setting time, foreign matter removal operation is performed. Step (S23), the step of determining whether the foreign matter removal operation time has passed the second set time (S24), and if the foreign matter removal operation time has not passed the second set time, maintain the foreign matter removal operation state and And returning to an operation standby state (S25) when the foreign substance removal operation time passes a second preset time. In one embodiment, the first set time may be set to 24 hours, and the second set time may be set to 5 seconds.

According to the operation method of the water spray system of the evaporative cooler in the foreign material removal operation mode, the water is supplied to the evaporative cooler 2 and the evaporative cooling is smoothly performed by periodically removing the foreign material in the standby state for a long period of time. Try to keep it as it can.

Referring to FIG. 7, in another embodiment, in a foreign matter removal operation mode, a method of operating a water spray system of an evaporative cooler is in a state of waiting for operation (S31), and when a dehumidification/cooling operation mode is selected (S32), foreign matter Initiating the removal operation (S33), determining whether the foreign substance removal operation time has passed the second set time (S34), and controlling the foreign substance when the foreign substance removal operation time has not passed the second set time The operation state is maintained, and the dehumidification/cooling operation (S35) is performed when the foreign substance removal operation time has elapsed. In one embodiment, the second snow setting time may be set to 5 seconds.

According to the operation method of the water spray system of the evaporative cooler in the foreign material removal operation mode in this way, when switching from the standby state to the dehumidification/cooling operation, by removing the foreign material before the dehumidification/cooling operation starts, the evaporative cooler (2) When the dehumidification/cooling operation is started, water supply and evaporative cooling are performed smoothly to improve dehumidification/cooling performance.

Referring to FIG. 8, in the operation mode of preventing freezing, the operation method of the water spray system of the evaporative cooler includes comparing the outside temperature with the first set temperature in a dehumidifying/cooling operation state (S41) (S42), wherein the outside temperature is When the temperature is higher than the first set temperature, the dehumidification/cooling operation state is maintained, and when the outside temperature is less than the first set temperature, freezing operation is performed (S43), and the outside temperature and the second set temperature are compared in the freezing prevention operation state. Step 44, and if the outside temperature is less than the second set temperature, maintains the freeze protection operation state, and when the outside temperature is above the second set temperature, releases the freeze protection operation (S45). . In one embodiment, the first set temperature is set to 5 ℃, the second set temperature may be set to 10 ℃.

According to the operation method of the water spray system of the evaporative cooler in the freeze prevention operation mode, when the outside temperature is less than the first preset temperature, the freeze prevention operation is performed to prevent damage caused by the freezing of the evaporative cooler 2 in advance. can do.

As described above, the present invention is not limited to the above-described embodiment, and a modified implementation obvious by a person skilled in the art to which the present invention pertains without departing from the technical spirit of the present invention claimed in the claims It is possible, and such modifications are within the scope of the present invention.

1,2: evaporative cooler 10: main body
11: heat exchange section 12: upper flow guide section
13: lower flow guide section 20: water pouring device
21: water tank 22: circulation pump
23: water valve 24: water pipe
25: nozzle 100: main body
110: heat exchange section 120: upper flow guide section
130: lower flow guide section 140: additional fan
200: water spray system 210: direct water supply unit
220: flow control unit 230: water pipe
240: fine spray nozzle 250: drainage
261: Direct water valve 262: First connector
263: drain valve 264: second connector
270: mode selection unit 280: control unit
W: Water SW: Spray water
L1: Direct water inflow line L2: Direct water supply line
L3: 1st connection line L4: 2nd connection line
L5: Main drain line L6: Integrated drain line
L7: Drain line L8: Additional fan drain line

Claims (19)

A main water spray system provided in an evaporative cooler including a heat exchange section in which a plurality of dry and wet channels through which different air passes are alternately arranged,
A direct water supply unit through which direct water is supplied;
A flow rate control unit for controlling the supply flow rate of the direct water flowing from the direct water supply unit;
A micro-injection nozzle provided in a water pipe located above the heat exchanger to spray water upward by generating direct water supplied to the water pipe as spray water; And
A drainage part that naturally drains the water that has passed through the wet channel;
Water injection system of the evaporative cooler comprising a. According to claim 1,
The main water pipe is a main water spray system of an evaporative cooler, characterized in that consisting of a single pipe. According to claim 1,
The fine spray nozzle is a water spray system of an evaporative cooler, characterized in that a plurality of spaced apart along the longitudinal direction of the water pipe. According to claim 2,
The fine spray nozzle is a water spray system of an evaporative cooler, characterized in that it is intensively arranged in the middle portion compared to both sides in the longitudinal direction of the water pipe. According to claim 1,
The fine injection nozzle is provided on the upper portion of the water pipe,
The water injection pipe is a water spray system of an evaporative cooler, characterized in that provided to be rotatable in both directions in a predetermined angle range. According to claim 1,
The flow rate control unit is the main water spray system of the evaporative cooler, characterized in that consisting of a positive pressure valve. According to claim 1,
The flow control unit is a main water spray system of an evaporative cooler, characterized in that consisting of a constant flow valve. According to claim 1,
The direct water supplied from the direct water supply unit is supplied to the main water pipe through the direct water inflow line and the direct water supply line,
The direct water inflow line is provided with the flow rate control part and a direct water valve for controlling the inflow of the direct water,
The main water spray system of the evaporative cooler, characterized in that a drain line is connected between the direct water inlet line and the direct water supply line to the drain, and a drain valve is provided to control the flow of the drained water. The method of claim 8,
The main water spray system of the evaporative cooler, characterized in that between the direct water supply line and the main water pipe, a first connection line and a second connection line are connected in parallel. The method of claim 8,
The drain line is connected to a main drain line through which water passing through the wet channel of the evaporative cooler is drained,
The drain line and the main drain line is the main water spray system of the evaporative cooler, characterized in that connected to the integrated drain line connected to the drain. The method of claim 10,
The integrated drain line is a main water spray system of an evaporative cooler, characterized in that a drain fan drain line for draining the water remaining in the extraction fan provided in the evaporative cooler is connected. The method of claim 8,
When waiting for operation, the water injection system of the evaporative cooler, characterized in that the direct water valve is closed and the drain valve is opened. The method of claim 8,
During dehumidification/cooling operation, the main water spray system of the evaporative cooler is characterized in that the direct water valve is opened and the drain valve is closed. The method of claim 8,
The main water spray system of the evaporative cooler, characterized in that, when the foreign matter is removed, the direct water valve and the drain valve are opened. The method of claim 8,
When the freeze-preventing operation of the evaporative cooler, the direct water valve is closed and the drain valve is opened. A method of operating the water spray system according to claim 13,
In the dehumidification/cooling operation mode,
Supplying direct water;
Adjusting the supply flow rate of the direct water;
Generating the supplied direct water as a spray water by a micro spray nozzle and spraying upward on the heat exchange part; And
Naturally draining the water that has passed through the wet channel;
Method of operating a water spray system of an evaporative cooler comprising a. A method of operating the water spray system according to claim 14,
In the foreign material removal operation mode,
Determining whether the first waiting time has elapsed from the first waiting time;
When the operation waiting time passes the first set time, the operation of removing foreign substances;
Determining whether the foreign substance removal operation time has elapsed; And
Returning to an operation standby state when the foreign material removal operation time passes a second set time;
Method of operating a water spray system of an evaporative cooler comprising a. A method of operating the water spray system according to claim 14,
When the dehumidification/cooling operation mode is selected in the operation standby state, starting a foreign substance removal operation;
Determining whether the foreign substance removal operation time has elapsed; And
The dehumidification / cooling operation of the foreign matter removal operation time after the second set time; operating method of the water spray system of the evaporative cooler comprising a. A method of operating the water spray system according to claim 15,
Comparing the outside temperature and the first set temperature in the dehumidifying/cooling operation state;
When the outside air temperature is less than the first set temperature, freezing preventing operation;
Comparing the outside air temperature and the second set temperature in the freezing prevention operation state; And
When the outside temperature is higher than the second set temperature, the operation of releasing the freeze prevention operation; The method of operating a water spray system of an evaporative cooler comprising a.

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