KR102571859B1 - Water supplying and spraying system for evaporative cooler and its operating method - Google Patents

Abstract

An object of the present invention is to provide a water injection system and an operating method of an evaporative cooler that reduce the failure rate by simplifying the structure of the water injection system, reduce water consumption and power consumption, and improve evaporative cooling performance.
The watering spray system of the evaporative cooler of the present invention to implement this is a watering and spraying system provided in the evaporative cooler including a heat exchange unit in which a plurality of dry channels and wet channels are alternately and repeatedly arranged through which different air passes, Direct water supply unit supplied; Flow control unit for adjusting the supply flow rate of direct water flowing from the direct water supply unit; A fine spray nozzle provided in the water supply pipe located above the heat exchange unit to generate spray water from the direct water supplied to the water supply pipe and spray it upward; and a drainage unit for naturally draining the water passing through the wet channel.

Description

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

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

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

However, conventional ventilators have a problem in that the latent heat recovery rate is significantly lower than the sensible heat recovery rate, so that they cannot cope with the increase in the cooling load. Regenerative evaporative cooling technology has been developed in consideration of the problems of the conventional energy ventilation system.

Regenerative evaporative cooling technology uses the evaporative cooling effect of water to lower the air temperature. Since it does not use refrigerants other than water, it can solve the problems of existing air conditioners and has the advantage of sufficiently reducing the cooling load. there is.

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

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

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

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

The upper flow guide part 12 forms a flow path for the first air flowing into the wet channel and forms a flow path for the second air passing through the dry channel, and the lower flow guide part 13 forms a flow path for the first air flowing into the wet channel. A flow path for the second air flowing into the dry channel is formed and a flow path for the first air passing through the wet channel is formed.

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

At the same time, as shown by the white arrow in FIG. 1 , after the second air is introduced into the lower flow path guide part 13 through the other side of the lower flow path guide part 13, the dry channel of the heat exchange part 10 It flows along the passage through which the air is supplied to the room through one side of the upper passage guide part 12.

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

Since the water injection device 20 of the conventional evaporative cooler is configured to circulate and reuse water, and must necessarily include a water tank 21 and a circulation pump 22, the structure of the water injection device 20 is It is complicated, and as the water tank 21 and the circulation pump 22 are installed, the volume and weight of the evaporative cooler 1 increase, and the frequency of failures increases due to the excessive number of parts, requiring frequent maintenance. As the pump 22 operates, there is a problem in that a lot of power is consumed.

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 passes through the wet channel of the heat exchange unit 11 at a high flow rate, so a large flow rate of water is required for sufficient heat exchange. Since it must 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, so that the coating layer formed on the surface of the heat transfer plate is easily peeled off due to the impact. There is a problem that durability is reduced.

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

In addition, when the evaporative cooler is not used for a long time, foreign matter remains in the water supply pipe. When the water supply and the evaporative cooler are operated while the foreign matter remains, water supply and evaporative cooling are smooth due to the foreign matter. However, there is a problem that the conventional evaporative cooler's water injection device lacks a configuration for removing foreign substances remaining in the water injection pipe.

In addition, if the outdoor temperature is low while the evaporative cooler is operating, the evaporative cooler may be damaged by freezing and bursting. In this case, it is necessary to stop the operation of the evaporative cooler and the water supply and drain the water. There is a problem in that the configuration for preventing damage due to such freezing is insufficient.

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

The present invention has been made to solve the above-mentioned problems, and the structure of the water injection system is simplified to reduce the failure rate, reduce water consumption and power consumption, and improve evaporative cooling performance. An evaporative cooler pouring spray system and its operation Its purpose is to provide a method.

Another object of the present invention is to provide a water injection system for an evaporative cooler and a method of operating the same, which can prevent contamination and freezing of the water injection pipe and the evaporative cooler in advance by smoothly removing foreign substances and water remaining in the water injection pipe. .

The watering spray system of the evaporative cooler of the present invention for realizing the above object is provided in the evaporative cooler including a heat exchange unit in which a plurality of dry channels and wet channels are alternately and repeatedly arranged through which different air passes. As a system, direct water supply unit that direct water is supplied; Flow control unit for adjusting the supply flow rate of direct water flowing from the direct water supply unit; A fine spray nozzle provided in the water supply pipe located above the heat exchange unit to generate spray water from the direct water supplied to the water supply pipe and spray it upward; And a drainage unit for naturally draining the water passing through the wet channel, wherein the direct water supplied from the direct water supply unit is supplied to the main water supply pipe through a direct water inlet line and a direct water supply line, and in the direct water inlet line, the flow rate control and a direct water valve for regulating the inflow of the direct water, and a drain line connected to the drain is branched between the direct water inlet line and the direct water supply line, and the drain line is for regulating the flow of water to be drained. A drain valve is provided, and between the direct water supply line and the water supply pipe, a first connection line and a second connection line connected in parallel are additionally provided, the first connection line and the second connection line connected in parallel. is collected and connected in series to the water supply pipe, so that when draining water through the drain line, negative pressure is generated inside the drain passage connected to the first connection line, the direct water supply line, and the drain line. Inside the drain passage The drain line is 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 are configured to drain smoothly without clogging. It is characterized in that it is connected to the integrated drain line connected to the drain.

The water supply pipe may be made of a single pipe.

The fine spray nozzles may be provided in plurality at intervals along the longitudinal direction of the water supply pipe.

The fine spray nozzles may be intensively disposed in a middle portion of the water supply pipe compared to both sides of the water supply pipe in the longitudinal direction.

The fine spray nozzle is provided on the top of the water supply pipe, and the water supply pipe may be provided to be rotatable in both directions within a predetermined angular range.

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

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

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A bleed fan drain line for draining water remaining in the bleed fan provided in the evaporative cooler may be connected to the integrated drain line.

During operation standby, the direct water valve may be closed and the drain valve may be opened.

During the dehumidifying/cooling operation, the direct water valve may be opened and the drain valve may be closed.

During the foreign matter removal operation, the direct water valve and the drain valve may be configured to be opened.

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

The operation method of the spraying system of the evaporative cooler of the present invention includes the steps of supplying direct water in a dehumidifying/cooling operation mode; Adjusting the supply flow rate of the direct water; Generating the supplied direct water into spray water by a fine spray nozzle and spraying it upward on the heat exchange unit; and naturally draining the water passing through the wet channel.

An operation method of an evaporative cooler watering spray system of the present invention includes the steps of determining whether a waiting time for operation from the start of waiting for operation has passed a first set time in a foreign matter removal operation mode; performing a foreign object removal operation when the operation standby time elapses a first set time period; determining whether the foreign matter removal operation time has passed a second set time; and returning to an operation standby state when the foreign matter removal operation time elapses a second set time period.

The operation method of the water spray system of the evaporative cooler of the present invention includes the steps of starting foreign matter removal operation when the dehumidification/cooling operation mode is selected in the operation standby state; determining whether the foreign matter removal operation time has passed a second set time; and performing the dehumidifying/cooling operation when the foreign matter removal operation time passes a second set time.

The operation method of the spray system of the evaporative cooler of the present invention includes the steps of comparing the outdoor temperature and the first set temperature in a dehumidifying/cooling operation state; operating a freeze protection operation when the outdoor temperature is less than the first set temperature; comparing an outdoor temperature and a second set temperature in the freeze-prevention driving state; and disabling the freeze prevention operation when the outdoor temperature is equal to or higher than the second set temperature.

According to the water injection system of the evaporative cooler and its operation method according to the present invention, the structure of the water injection system can be simplified to reduce the failure rate and reduce water consumption and power consumption.

In addition, the spray water is sprayed upward by the fine spray nozzle to increase the scattering time of water particles to improve heat exchange efficiency and evaporative cooling performance, and to minimize peeling of the coating layer coated on the surface of the evaporative cooler body to improve durability. can

In addition, by configuring the water supply pipe to be rotated in both directions within a predetermined angular range, spray water can be evenly supplied to the entire area of the heat exchange unit even if the water supply pipe is configured as a single pipe.

In addition, by performing the foreign matter removal operation before starting the dehumidification/cooling operation in the operation standby state for a certain period of time or in the operation standby state, the direct water supply and evaporative cooling are smoothly performed to improve 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 due to freezing of the evaporative cooler in advance by performing a freeze prevention operation.

1 is a view showing a water injection system of a conventional evaporative cooler;
2 is a view showing a watering spray system of an evaporative cooler according to the present invention;
3 is a view showing the water supply and drain lines of the water injection system of the evaporative cooler according to the present invention;
4 is a control block diagram of the watering spray system of the evaporative cooler according to the present invention;
5 is a flow chart showing a method of operating the water injection system of the evaporative cooler in the dehumidification / cooling operation mode;
6 and 7 are flowcharts showing the operation method of the water injection system of the evaporative cooler in the foreign matter removal operation mode;
8 is a flow chart showing a method of operating a water injection system of an evaporative cooler in a freeze protection operation mode.

Hereinafter, the configuration and operation of a 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 main body 100 and a water injection system 200 for supplying water to the main body 100.

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

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

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

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

The lower flow guide part 130 forms a flow path for the second air flowing into the dry channel and also forms a flow path for the first air passing through the wet channel.

As shown by the black arrows in FIG. 2, after the first air (indoor air and bleed air) is introduced into the upper flow path guide portion 120 through the upper portion of the upper flow path guide portion 120, the heat exchange unit ( 110) and flows along the flow path exhausted to the outdoors through one side of the lower flow guide part 130 via the wet channel.

At the same time, as shown by the white arrows in FIG. 2, the second air (suction air and supply air) is introduced into the lower flow guide portion 130 through the other side of the lower flow guide portion 130, and then heat exchanged. Through the key channel of the part 100, it flows along the flow path supplied to the room through one side of the upper flow guide part 120.

The water injection system 200 of the present invention includes a direct water supply unit 210 to which direct water (tap water) is supplied, and a flow rate control unit 220 for adjusting the supply flow rate of direct water flowing from the direct water supply unit 210, The water supply pipe 230 disposed in the transverse direction on the upper side of the upper flow path guide part 120, and the water supply pipe 230 provided on the upper part of the water supply pipe 230, the spray water (SW) It is configured to include a fine spray nozzle 240 that is generated and sprayed upward, and a drainage unit 250 that naturally drains water flowing down through the wet channel of the heat exchange unit 110.

The fine spray nozzles 240 may be provided in plurality at intervals along the longitudinal direction of the water supply pipe 230 . The fine injection nozzle 240 communicates with the water injection pipe 230, and a plurality of fine-sized holes are formed in the fine injection nozzle 240 to face upward and have various spray angles, so that the water injection pipe ( 230) is generated as spray water (SW) while passing through fine-sized holes formed in the fine spray nozzle 240 and is sprayed upward.

It is preferable that the fine spray nozzles 240 are intensively disposed in the middle portion of the water supply pipe 230 compared to both sides in the longitudinal direction. According to this configuration, compared to the case where the fine spray nozzles 240 are uniformly distributed over the entire area in the longitudinal direction of the water injection pipe 230, the flow rate of direct water is high in the longitudinal direction of the water injection pipe 230. When the fine spray nozzle 240 is intensively placed in the middle, the contact time between the spray water (SW) and the air can be increased by increasing the flight time during which the spray water (SW) is scattered, so that the sensible heat performance is improved and the evaporative cooler The cooling performance of (1) can be improved.

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

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

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

As shown by the arrow in FIG. 2, the direct water supplied from the direct water supply unit 210 is supplied to the main water supply pipe 230 via the flow control unit 220, and the direct water flowing into the main water main pipe 230 is a fine spray nozzle It is generated as fine-sized spray water (SW) through the 240 and is sprayed into the upper space of the upper flow path guide part 120, and the wet channel of the upper flow path guide 120 and the heat exchange part 110 and the lower flow path guide part After flowing along (130), it is naturally drained through the drainage part (250).

Hereinafter, the 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 supply pipe 230 through the direct water inlet line L1 and the direct water supply line L2.

The direct water inlet line (L1) is provided with the flow control unit 220 and a direct water valve 261 for regulating the inflow of direct water. Between the direct water inlet line (L1) and the direct water supply line (L2) is connected by a connection port 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, and a pair of upper ports formed at the upper end of the second connector 264 is connected in parallel to the first A connection line (L3) and a second connection line (L4) are provided, and the first connection line (L3) is connected to one end of the water supply pipe (230).

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

A drain line L7 is connected to the 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).

A bleed fan drain line L8 for draining water remaining in the bleed fan 140 provided in the evaporative cooler is connected to the integrated drain line L6.

When the direct water valve 261 is opened, the direct water flow path of the direct water inlet line (L1) is opened and the direct water supplied from the direct water supply unit 210 is supplied to the main water main 230 side. When the direct water valve 261 is closed, the flow path of the direct water inlet line (L1) is closed and the supply of direct water is blocked.

When the drain valve 263 is opened, the flow path of the drain line (L7) is opened, and the direct water inlet line (L1), the direct water supply line (L2), the first connection line (L3), the second connection line (L4), And water remaining in the main water supply pipe 230 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 include the direct water inlet 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 supply pipe 230 functions 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 connection through the integrated drain line (L6), the drain line (L7), and the direct water supply line (L2). A small amount can be introduced into the line (L4), thereby preventing negative pressure from occurring inside the drain passage connected to the first connection line (L3), 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 FIG. 4, the watering spray system 200 of the present invention includes a mode selection unit 270 for setting the operation mode of the evaporative cooler 2 and an operation mode selected by the mode selection unit 270. According to the direct water valve 261, the flow control unit 220 and the control unit 280 for controlling the opening and closing operation of the drain valve 263 is included.

The mode selection unit 270 may select any one of an operation standby mode, a dehumidifying/cooling operation mode, a foreign matter 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 irrigation spray system 200 is stopped, and the direct water valve 261 is closed and the drain valve 263 is controlled to open, thereby supplying direct water. blocked, and drained through the drain line (L7).

The dehumidifying/cooling operation mode is a mode in which the evaporative cooler 2 and the irrigation spray system 200 are operating, and the direct water valve 261 is controlled to open and the drain valve 263 to close, thereby supplying direct water. and the drainage through the drain line (L7) is blocked.

The foreign matter removal operation mode is a mode for discharging water and foreign matter remaining in the water supply pipe when the operation standby state lasts longer than a set time or when the operation standby state is switched to the dehumidifying/cooling operation, and the direct water valve 261 and the drain valve 263 are all 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 dehumidifying/cooling operation state. The valve 261 is controlled to be closed and the drain valve 263 to be opened. The outdoor temperature may be obtained by measuring the outdoor temperature using an outdoor temperature sensor or by wired/wireless communication with an external server storing outdoor temperature information.

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

Referring to FIG. 5, in the dehumidification/cooling operation mode, the method of operating the water injection system of the evaporative cooler includes supplying direct water (S11), adjusting the supply flow rate of the direct water (S12), and the supplied direct water. is generated as spray water (SW) by the fine spray nozzle 230 and sprayed upward on the upper flow guide part 120 (S13), and the water passing through the wet channel of the heat exchange part 110 is naturally and draining (S14).

Referring to FIG. 6, in one embodiment, in the foreign matter removal operation mode, in the operation method of the evaporative cooler's watering spray system, in the state of waiting for operation (S21), the waiting time for operation from the start of standby for operation is a first set time (S22) determining whether the operation standby time has elapsed before the first set time, maintaining the operation standby state, and removing the foreign matter when the operation standby time has passed the first set time. Step (S23), determining whether or not the foreign material removal operation time has passed the second set time (S24), and maintaining the foreign material removal operation state if the foreign material removal operation time has not passed the second set time , and returning to an operation standby state when the foreign matter removal operation time passes a second set time (S25). 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 watering spray system of the evaporative cooler in the foreign matter removal operation mode, by periodically removing the foreign matter when the evaporator is in standby for a long period of time, the evaporative cooler 2 can be smoothly supplied with water and evaporative cooling. to keep the condition as possible.

Referring to FIG. 7 , in another embodiment, in the operation mode of removing foreign matter, the method of operating the watering spray system of the evaporative cooler is in the operation standby state (S31), when the dehumidification/cooling operation mode is selected (S32), the foreign matter Initiating the removal operation (S33), determining whether the foreign material removal operation time has passed the second set time (S34), and controlling the foreign material when the foreign material removal operation time has not passed the second set time Maintaining the operation state, and performing a dehumidifying/cooling operation when the foreign matter removal operation time elapses a second set time (S35). In one embodiment, the second setting time may be set to 5 seconds.

According to the operating method of the evaporative cooler's watering/spraying system in the foreign matter removal operation mode, when switching from the standby state to the dehumidifying/cooling operation, by removing the foreign matter before starting the dehumidifying/cooling operation, the evaporative cooler 2 During dehumidification/cooling operation, water supply and evaporative cooling are smoothly performed, so that dehumidification/cooling performance can be improved.

Referring to FIG. 8 , in the freeze prevention operation mode, the method of operating the water spray system of the evaporative cooler is a step of comparing the outdoor temperature with a first set temperature in a dehumidifying/cooling operation state (S41) (S42), the outdoor temperature is Maintaining the dehumidifying/cooling operation state when the temperature is higher than the first set temperature, and operating the freeze protection operation when the outdoor temperature is less than the first set temperature (S43). Step 44, and maintaining the freeze protection operation state when the outdoor temperature is less than a second set temperature, and disabling the freeze protection operation when the outside temperature is higher than the second set temperature (S45). . In one embodiment, the first set temperature may be set to 5°C, and the second set temperature may be set to 10°C.

According to the operating method of the spraying system of the evaporative cooler in the freeze protection operation mode, when the outside air temperature is less than the first set temperature, the freeze protection operation is performed to prevent the evaporative cooler 2 from being damaged by freezing in advance can do.

As described above, the present invention is not limited to the above-described embodiments, and modifications obvious to those skilled in the art to which the present invention pertains may be carried out without departing from the technical spirit of the present invention claimed in the claims. It is possible, and such modifications fall within the scope of the present invention.

1,2: evaporative cooler 10: main body
11: heat exchange part 12: upper flow guide part
13: lower flow guide part 20: water injection device
21: water tank 22: circulation pump
23: water supply valve 24: water supply pipe
25: nozzle 100: main body
110: heat exchange part 120: upper flow guide part
130: lower flow guide part 140: extraction fan
200: water spray system 210: direct water supply unit
220: flow control unit 230: water supply pipe
240: fine spray nozzle 250: drain
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: first connection line L4: second connection line
L5: Main drain line L6: Integrated drain line
L7: Drain line L8: Extraction fan drain line

Claims (19)

A watering spray system provided in an evaporative cooler including a heat exchange unit in which a plurality of dry channels and wet channels through which different air passes are alternately and repeatedly arranged,
Direct water supply unit that direct water is supplied;
Flow control unit for adjusting the supply flow rate of direct water flowing from the direct water supply unit;
A fine spray nozzle provided in the water supply pipe located above the heat exchange unit to generate spray water from the direct water supplied to the water supply pipe and spray it upward; and
a drainage unit that naturally drains the water passing through the wet channel;
Including,
The direct water supplied from the direct water supply unit is supplied to the main water supply pipe through the direct water inlet line and the direct water supply line,
The direct water inlet line is provided with the flow control unit and a direct water valve for regulating the inflow of the direct water,
A drain line connected to the drainage unit is branched between the direct water inlet line and the direct water supply line, and the drain line is provided with a drain valve for regulating the flow of drained water,
Between the direct water supply line and the water supply pipe, a first connection line and a second connection line connected in parallel are additionally provided, and the first connection line and the second connection line connected in parallel are combined to form the water supply pipe. connected in series to the drain line, when draining through the drain line, the phenomenon of negative pressure occurring inside the drain passage connected to the first connection line, the direct water supply line, and the drain line is prevented, so that the water remaining inside the drain passage is blocked. It is configured so that it can be drained smoothly without
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 are water spray systems of the evaporative cooler, characterized in that connected to the integrated drain line connected to the drain. According to claim 1,
The water injection system of the evaporative cooler, characterized in that consisting of a single pipe. According to claim 1,
The fine spray nozzle is a water spray system of the evaporative cooler, characterized in that provided with a plurality at intervals along the longitudinal direction of the water supply pipe. According to claim 2,
The fine spray nozzle is a water spray system of the evaporative cooler, characterized in that disposed intensively in the middle compared to both sides of the longitudinal direction of the water injection pipe. According to claim 1,
The fine spray nozzle is provided on the top of the water supply pipe,
The water injection system of the evaporative cooler, characterized in that provided to be rotatable in both directions in a predetermined angle range. According to claim 1,
The spraying system of the evaporative cooler, characterized in that the flow control unit is made of a constant pressure valve. According to claim 1,
The injection system of the evaporative cooler, characterized in that the flow control unit is made of a constant flow valve. delete delete delete According to claim 1,
The integrated drain line is characterized in that the bleed fan drain line for draining the water remaining in the bleed fan provided in the evaporative cooler is connected. According to claim 1,
When operating standby, the direct water valve is closed and the drain valve is opened. According to claim 1,
During dehumidification/cooling operation, the direct water valve is opened and the drain valve is closed. According to claim 1,
During the foreign matter removal operation, the water injection system of the evaporative cooler, characterized in that the direct water valve and the drain valve are opened. According to claim 1,
During the freezing prevention operation of the evaporative cooler, the direct water valve is closed and the drain valve is opened. As a method of operating the watering spray system according to claim 13,
In dehumidification/cooling operation mode,
supplying direct water;
Adjusting the supply flow rate of the direct water;
Generating the supplied direct water into spray water by a fine spray nozzle and spraying it upward on the heat exchange unit; and
naturally draining the water passing through the wet channel;
Method of operating the water injection system of the evaporative cooler comprising a. As a method of operating the watering spray system according to claim 14,
In foreign matter removal operation mode,
Determining whether a waiting time for driving has passed a first set time from the start of waiting for driving;
performing a foreign object removal operation when the operation standby time elapses a first set time period;
determining whether the foreign matter removal operation time has passed a second set time; and
returning to an operation standby state when the foreign matter removal operation time elapses a second set time period;
Method of operating the water injection system of the evaporative cooler comprising a. As a method of operating the watering spray system according to claim 14,
initiating a foreign object removal operation when a dehumidifying/cooling operation mode is selected in an operation standby state;
determining whether the foreign matter removal operation time has passed a second set time; and
Operating a spraying system of an evaporative cooler comprising the step of performing the dehumidifying/cooling operation when the foreign matter removal operation time passes the second set time. As a method of operating the watering spray system according to claim 15,
comparing an outdoor temperature and a first set temperature in a dehumidifying/cooling operation state;
operating a freeze protection operation when the outdoor temperature is less than the first set temperature;
comparing an outdoor temperature and a second set temperature in the freeze-prevention driving state; and
A method of operating an injection spray system of an evaporative cooler comprising the step of disabling the freeze protection operation when the outside temperature is equal to or greater than the second set temperature.

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