KR101801069B1 - Sprinkling water and atomizing apparatus, direct expansion air handling unit with the same and control method thereof - Google Patents

Abstract

The present invention relates to a water sprinkling and atomizing apparatus to apply sprinkling and atomizing technique to an outdoor unit to prevent high temperature trouble caused by outdoor air rising, a direct expansion type air conditioner applied with the same, and a control method thereof. The water sprinkling and atomizing apparatus comprises: an installation module installed in an inlet of an outdoor unit; a screen module installed in a space formed by the installation module; and a water sprinkling module lowering a temperature of air flowing into the outdoor unit with an evaporation cooling effect by sprinkling and atomizing water with an indirect spray method toward the screen module. Therefore, high temperature trouble caused by the inflow of high temperature outdoor air can be prevented by evaporating and cooling outdoor air flowing through the inlet with an indirect spray method by sprinkling and finely atomizing water to a screen installed at an external side of the outdoor unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a water spraying apparatus, a direct inflatable air conditioner to which the present invention is applied, and a control method thereof. [0002]

The present invention relates to a water spraying apparatus, a direct inflatable air conditioner to which the present invention is applied, and a control method thereof, and more particularly, to an indoor air conditioner which is sprayed and sprayed on an outdoor unit of an air conditioner under an outdoor high- A direct inflatable air conditioner to which the present invention is applied, and a control method thereof.

The air conditioner is a device for controlling the temperature, humidity, air flow, and cleanliness of the air sent to the room in order to create a pleasant indoor environment, and is mainly used for large-scale cooling and heating in large buildings such as buildings or factories.

The air conditioner exchanges heat between cold water or hot water (sometimes steam), which is a heat medium transferred from a heat source such as a refrigerator or a boiler, and air (called ventilation) from the room, and then exchanges heat-exchanged air Reduce or raise the room temperature.

In a normal air conditioner, cold water or hot water (or steam) is used as the heat medium, but direct air handling unit (Direct eXpansion Air Handling Unit) uses the refrigerant as a heating medium without using a refrigerator or a boiler.

The direct inflatable type air conditioner refers to an air conditioner capable of individually operating independently of a central cooling / heating system by incorporating a direct expansion coil (D.XCOIL) in which a refrigerant directly expands.

As the heating coil, hot water or steam supplied from a boiler may be used, and when heating load is low, an electric heating coil may be installed.

When this direct inflatable air conditioner is connected to an outdoor unit for EHP (Electric Heat Pump) or GHP (Gas Heat Pump), which is a recent HEAT PUMP type, this is referred to as an EHP or GHP type air conditioner.

The EHP or GHP type air conditioner has the same function principle as the general type air conditioner, which is suitable for constructing the humidity, clean and air necessary for indoor air conditioning as well as air-conditioning and heating in a large capacity room by connecting a plurality of outdoor units to one air conditioner .

Therefore, the EHP or GHP type air conditioner has the advantage of managing the air quality without installing additional equipment.

For example, Patent Document 1 and Patent Document 2 described below disclose a direct inflatable air conditioner and a heat pump technique according to the prior art.

Korean Patent Registration No. 10-1070186 (issued on October 5, 2011) Korean Patent Registration No. 10-1690615 (Announcement on December 28, 2016)

On the other hand, in a direct inflatable type air conditioner according to the related art, when the heat pump is used as a heat source for cooling, if the temperature of the outdoor air is increased, the cooling efficiency is drastically reduced or a sufficient cooling function is not provided.

For example, in Korea, when the temperature of outdoor air rises above the rated capacity of the condenser in a hot summer season, or in a high temperature region such as the Middle East or Southeast Asia, frequent high pressure troubles occur in the air conditioner.

The operation time of the air conditioner is shortened due to the high pressure trouble due to the rise of the outdoor air temperature, and the life of each equipment is deteriorated.

Particularly, when water is sprayed directly to an outdoor unit, moisture is directly contacted with a condensing coil provided inside the outdoor unit, dust and foreign matter are adsorbed and contaminated the coil, and rust is generated by moisture.

Therefore, it is necessary to develop high efficiency condensation system technology by inducing evaporation cooling effect by applying sprinkling device that sprays and spray water to the outdoor unit. Especially, development of technology to prevent damages in high temperature regions such as Central and South America and Middle East .

An object of the present invention is to solve the above problems and to provide a spraying apparatus capable of preventing high temperature trouble due to rise of outdoor air by applying sprinkling and spraying technology to an outdoor unit, And a control method thereof.

Another object of the present invention is to provide a spraying apparatus capable of spraying and fine spraying in an indirect spraying system to improve efficiency by using an evaporative cooling effect, a direct inflatable air conditioner to which the spraying apparatus is applied, and a control method thereof.

It is still another object of the present invention to provide a spraying apparatus capable of preventing contamination and corrosion of a condensing coil due to spraying, a direct inflatable air conditioner to which the spraying apparatus is applied, and a control method thereof.

In order to accomplish the above object, a spraying and spraying apparatus according to the present invention includes an installation module installed on a side of a suction port of an outdoor unit, a screen module installed in a space formed by the installation module, And a spraying module for spraying and spraying the sprayed water to lower the temperature of the air flowing into the outdoor unit by using the evaporative cooling effect.

In order to achieve the above-mentioned object, the direct inflatable type air conditioner to which the water spraying apparatus according to the present invention is applied includes water spraying apparatus, spraying and fine spraying by indirect spraying method, And the air is cooled.

According to another aspect of the present invention, there is provided a method for controlling a direct inflatable air conditioner using a water spray apparatus according to the present invention, the method comprising: (a) when an air conditioner starts operation and a compressor and a condensing fan are driven, (B) comparing the condensation temperature, the outdoor air temperature, and the discharge pressure sensed by the control unit with predetermined set values, and (c) And cooling the air introduced into the outdoor unit by water spraying and fine spraying on a screen installed outside the outdoor unit based on the inspection result in an indirect injection system.

As described above, according to the water spraying apparatus, the direct inflatable air conditioner, and the control method thereof applied to the spraying apparatus according to the present invention, the screen installed on the outside of the outdoor unit is sprayed and sprayed, The effect that the air can be evaporated and cooled can be obtained.

Therefore, according to the present invention, it is possible to prevent high-temperature trouble due to exceeding the rated capacity of the condenser provided in the outdoor unit due to inflow of outdoor air at high temperature.

Thus, according to the present invention, the efficiency of the condensing system applied to the direct inflatable type air conditioner can be improved.

In particular, according to the present invention, it is possible to minimize the capacity and size of the heat exchanger for condensation by cooling the temperature of the outdoor air flowing into the condenser to about 5 to 25 DEG C, And it is possible to maintain the viscosity of the refrigerator oil stably to secure the lubrication performance, to increase the durability of the compressor driving part, to secure the oil film performance in the compression process, and to exhibit the stable compression performance.

According to the present invention, the water spraying performance can be improved by providing a plurality of spraying areas on the screen, varying the area ratio of each spraying area according to the structure and capacity of the spraying spraying device and spraying conditions.

According to the present invention, it is possible to control the capacity of the spraying apparatus and the spraying amount of spraying water sprayed from the spraying nozzle through the optimum pulse control based on the condensation temperature of the outdoor unit, the outdoor air temperature and the discharge pressure.

According to the present invention, it is possible to prevent contamination and corrosion of the condensing coil due to contact with moisture, by spraying and fine spraying toward the screen provided outside the outdoor unit.

1 is a perspective view of an outdoor unit to which a water spraying apparatus according to a preferred embodiment of the present invention is applied,
FIG. 2 is a block diagram of the spraying apparatus shown in FIG. 1;
FIG. 3 is an enlarged view of the spraying apparatus shown in FIG. 1,
Fig. 4 is a side view of the spraying apparatus shown in Fig. 3,
5 is a configuration diagram of an outdoor unit to which a water spraying apparatus according to another embodiment of the present invention is applied;
FIG. 6 is a flowchart illustrating steps of a spraying apparatus according to a preferred embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a spraying apparatus, a direct inflatable air conditioner, and a control method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an outdoor unit to which a spraying apparatus according to a preferred embodiment of the present invention is applied, and FIG. 2 is a block diagram of the spraying apparatus shown in FIG.

Hereinafter, terms indicating directions such as 'left', 'right', 'forward', 'rearward', 'upward' and 'downward' are defined as indicating respective directions based on the states shown in the respective drawings do.

1, a water spraying apparatus 20 according to a preferred embodiment of the present invention is installed in a space formed by an installation module 30 and an installation module 30 installed on a suction port side of an outdoor unit 10 And a spraying module 50 for spraying and spraying the sprayed water toward the screen module 40 and the screen module 40 to lower the temperature of the air introduced into the outdoor unit 10 by using the evaporative cooling effect.

2, the water spraying apparatus 20 according to a preferred embodiment of the present invention includes a sensing unit 60 and a sensing unit 60 for sensing the condensation temperature and outdoor air temperature of the outdoor unit 10 and the discharge pressure, 60 for controlling the spraying module 50 based on the detected temperature.

The outdoor unit 10 may be connected to a heat pump (not shown) provided in the room to constitute a direct inflatable air conditioner.

A suction port 11 for sucking outdoor air is formed at one side of the outdoor unit 10. An outlet 12 for discharging the air heated at a high temperature through heat exchange with the refrigerant is provided at the other side of the outdoor unit 10 .

The discharge port 12 may be provided with a fan for blowing air heated to a high temperature to the outside.

The sensing unit 60 may include a first sensing sensor 61 for sensing the condensation temperature at which the refrigerant is condensed in the outdoor unit 10 and a second sensing sensor 62 for sensing the temperature of the outdoor air.

In addition, the sensing unit 60 may further include a third sensing sensor 63 sensing the pressure of the air discharged from the outdoor unit 10, that is, the discharge pressure.

The control unit 70 optimizes the driving of the valve unit 56 provided in the spraying module 50 based on the condensation temperature, the outdoor air temperature, the discharge pressure, and the evaporation conditions sensed by the sensing unit 60, have.

The control unit 70 may be provided as a main controller for controlling the driving of each device provided in the air conditioner or may be provided as a separate controller communicably connected to the main controller.

Next, the configuration of each module applied to the spraying apparatus will be described in detail with reference to FIGS. 3 and 4. FIG.

FIG. 3 is an enlarged view of the spraying apparatus shown in FIG. 1, and FIG. 4 is a side view of the spraying apparatus shown in FIG.

3 and 4, the installation module 30 includes an installation frame 31 formed in a shape corresponding to the shape of the intake port 11, an outer frame 30 at both ends of the installation frame 31, And a connection frame 33 connecting the upper end of the installation frame 31 and the front end, i.e., the outer end, of the support frame 32. [

The installation frame 31 is installed vertically on the outside of the inlet 11 and the support frame 32 can be horizontally installed on the entire lower end surface of the installation frame 31.

The connection frame 33 may be installed between the upper end of the installation frame 31 and the front end of the support frame 32 in an inclined manner.

The installation frame 31, the support frame 32 and the connection frame 33 may be circular pipes each having a circular section or rectangular pipes such as a square or triangle in cross section, 34).

As described above, the mounting frame 31, the support frame 32, and the connection frame 33 are connected to the outdoor unit 10 having various shapes and sizes by applying various connecting joints 34 that can freely adjust the angle. And can be easily assembled correspondingly.

Here, the pipes applied to the installation module 30 support the load of the screen module 40 and the spray module 50, respectively, and have a diameter of about 20 to 30 mm As shown in Fig.

The installation module 30 constructed as described above can be installed in the outdoor unit 10 using a plurality of elastic members 35 whose both ends are fixed to the installation module 30 and the outdoor unit 10 and are elastically deformable have.

For example, the elastic member 35 is provided as a coil spring, and a ring is provided at both ends of the elastic member 35 so as to be fixed to the installation module 30 and the structure around the outdoor unit 10 and the outdoor unit 10, .

As described above, by installing the installation module 30 using the elastic member 35 having elasticity, it is possible to buffer the impact applied from the wind or the outside, thereby preventing damage to the spraying apparatus 20.

The screen module 40 includes a screen frame 41 and a screen frame 41 which are formed in a shape corresponding to the outer surface of the space formed by the installation frame 31, the support frame 32 and the connection frame 33, And a screen 42 installed in a space formed inside the display unit 41.

For example, the screen 42 is formed in a substantially rectangular plate shape having a mesh structure, and the screen 42 is formed by the front end of the support frame 32, &Quot; < / RTI >

Thus, the screen 42 can be divided into an upper screen 43 and a lower screen 44 with the support frame 32 as the center.

That is, in order to improve water spraying performance, the present invention is characterized in that two spraying areas are provided by dividing the upper screen 43 and the lower screen 44 about the support frame 32, and the structure of the spraying and spraying apparatus 20 And the ratio of the area of each spraying area to the capacity and spraying conditions can be variously changed.

Of course, the present invention may be modified to provide two or more watering zones according to the structure, capacity, and spraying conditions of the spraying apparatus 10.

The screen 42 may be made of a flame retardant or nonflammable material so that fine sprayed water spray particles can be brought into contact with hot outdoor air sucked into the outdoor unit 10 to improve the evaporative cooling effect.

The mesh of the screen 42 can be varied and varied according to spraying conditions to maximize capillary pressure.

In the present embodiment, the screen 42 is applied to the installation module 31 provided outside the outdoor unit 10. However, the present invention is not limited to the case where the screen 42 is directly applied to the cooling coil provided inside the outdoor unit 10 Shield screen 45 to the inlet 11 of the outdoor unit 10 so as to prevent it from coming into contact with the outdoor unit 10. [

The present invention can be modified to provide the screen 42 and the scatter prevention screen 45 in a single layer or a plurality of layers, respectively.

When the screen 42 is provided in a plurality of layers, each screen 42 provided in a plurality of layers may have meshes of different sizes.

For example, a screen 42 disposed outwardly of a plurality of overlapping screens 42 may be configured to prevent water sprayed and sprayed water from splashing outside the spraying apparatus 10, Lt; RTI ID = 0.0 > 42 < / RTI >

And the shatterproof screen 45 may have a mesh of a smaller size than the screen () to prevent the importer from flowing into the cooling coil inside the outdoor unit 10. [

The spraying module 50 includes a spraying pipe 51 horizontally installed at the lower end of the installation frame 31, a water supply pipe 52 for supplying water to the spraying pipe 51, And a spray nozzle 53 for spraying and finely spraying water toward the spray nozzle 53.

The spray nozzle 53 may include a first spray nozzle 54 spraying and fine spraying on the upper screen 43 and a second spray nozzle 55 spraying and fine spraying on the lower screen 44.

Here, the first and second injection nozzles 54 and 55 may be provided in a plurality of positions, and may be spaced apart from each other by a predetermined interval.

The first and second injection nozzles 54 and 55 may be installed to spray and spray at a predetermined spray angle toward the upper screen 43 and the lower screen 44, respectively, to increase water spraying and spray efficiency.

For example, the spray angle may be set to an angle of about 30 to 80 degrees considering the heat exchange area, and each spray nozzle 53 may be sprayed in a circular or polygonal shape.

Each of the spray nozzles 44 may be made of a stainless steel material so as to prevent the generation of rust.

On the other hand, the water supply pipe 52 may be provided with a valve unit 56 for supplying or blocking water according to a control signal of the control unit 70.

The valve unit 56 may be a solenoid valve that is opened and closed electronically in accordance with a control signal of the controller 70.

The working pressure of the solenoid valve is set to about 0.35 to 2 bar, and the temperature of the working fluid may have a rated condition of about 10 to 30 占 폚.

In the case of an air conditioner in which the indoor unit and the outdoor unit are integrally formed, the water supply pipe 52 is connected to an evaporator provided as an indoor unit, and the condensate generated in the evaporator can be collected and sprayed by the spraying module 50.

1, the suction port 11 is formed on one side of the outdoor unit 10. However, the present invention is not limited thereto.

For example, FIG. 5 is a configuration diagram of an outdoor unit to which a spraying apparatus according to another embodiment of the present invention is applied.

The present invention is applicable to an outdoor unit 10 having various shapes and structures such as a type in which one or more suction ports 11 are formed on both sides of an outdoor unit 10 and a discharge port 12 is formed on an upper surface thereof It should be noted that the present invention can be applied.

Next, referring to FIG. 6, a method of controlling spraying apparatus according to a preferred embodiment of the present invention will be described in detail.

FIG. 6 is a flowchart illustrating a stepwise control method of spraying apparatus according to a preferred embodiment of the present invention.

When the air conditioner starts operating in step S10 of FIG. 6, the controller 70 controls the first to third sensing sensors 61 to 63 of the sensing unit 60 in a state in which the compressor and the condensing fan are driven (S12) The capacity of the spraying apparatus 10 and the spray amount of the spray water sprayed from the spray nozzles 53 can be controlled and optimized based on the condensation temperature of the outdoor unit 10 sensed by the outdoor unit 10 and the outdoor air temperature and the discharge pressure.

More specifically, in step S14, the controller 70 checks whether the condensation temperature of the outdoor unit 10, the outdoor air temperature, or the discharge pressure is equal to or greater than a predetermined set value.

If the condensation temperature of the outdoor unit 10, the outdoor air temperature, and the discharge pressure are both less than the preset values, the control unit 70 proceeds to step S20.

On the other hand, if it is determined in step S14 that the condensation temperature, outdoor air temperature, or discharge pressure of the outdoor unit 10 is equal to or larger than a predetermined set value, the controller 70 sets the operation range according to the deviation value set by the administrator.

For example, when the outdoor air temperature is 40 ° C and the deviation value is set to ± 1 ° C, the controller 70 sets the operation range from 39 ° C to 41 ° C (S16).

If the outdoor air temperature is equal to or higher than the upper limit temperature, that is, 41 캜 or more, the control unit 70 controls the valve unit 56 to open and spray and atomize the valve unit 56 at the injection nozzle 53.

If the outdoor air temperature is lower than the lower limit temperature, that is, 39 DEG C, the valve unit 56 is controlled to be closed (S18).

At this time, the control unit 70 can generate and control a control signal in the form of a pulse signal so as to periodically open and close the valve unit 56 in accordance with a preset period in order to save water consumed for spraying and fine spraying .

For example, the on-time at which the valve unit 56 is driven may be set to about 2 to 5 seconds, and the off-time may be set to about 1 to 2 minutes.

Of course, the on-time and the off-time can be variously changed according to conditions such as the condensation temperature of the outdoor unit 10, the outdoor air temperature, the discharge pressure, and the like.

Instead of controlling the valve unit 56 to open and close periodically, the control unit 70 may increase or decrease the opening amount or opening time of the valve unit 56 in proportion to the deviation between the operating range and the current outdoor air temperature Can be controlled.

In step S20, the control unit 70 checks whether the stop switch is operated to stop the operation of the air conditioner, and controls the steps S12 to S20 to be repeated until the stop command is input by the stop switch operation .

If the operation stop command is input in step S20, the control unit 70 stops driving the spraying apparatus 20 and the air conditioner, and terminates the operation.

Through the above-described process, the present invention can evaporate and cool the outdoor air sucked through the suction port in an indirect spraying manner by spraying and fine spraying on a screen installed outside the outdoor unit.

Therefore, the present invention can prevent a high temperature trouble due to exceeding a rated capacity of a condenser provided in an outdoor unit due to inflow of outdoor air at a high temperature.

Accordingly, the present invention can improve the efficiency of the condensing system applied to the direct inflatable air conditioner.

Figs. 7 and 8 are illustrations for explaining the cooling effect of outdoor air by the water spraying apparatus. Fig.

7 shows an outdoor air temperature of 45 DEG C, a discharge air temperature of 60 DEG C discharged from an outdoor unit, and a temperature of 110 DEG C of a refrigerant gas discharged from a compressor when the spraying apparatus is not used.

8, when the spraying apparatus is applied in a state where the outdoor air temperature is 45 캜 and the humidity is 40%, the temperature of the air introduced into the outdoor unit by the spraying apparatus is cooled to about 32 캜.

As the air flowing into the outdoor unit is cooled, the temperature of the discharged air discharged from the outdoor unit is also lowered to 45 ° C.

As the condensing efficiency of the outdoor unit is increased, the temperature of the refrigerant gas discharged from the compressor is also reduced to 90 ° C.

Although the invention made by the present inventors has been described concretely with reference to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

Although the embodiment has been described as being applied to the direct inflatable type air conditioner, the invention is not limited thereto.

That is, the present invention can be applied not only to industrial applications such as direct inflatable air conditioners, but also to general outdoor air conditioners including a heat pump, small outdoor air conditioners for cooling and heating, and air conditioner air conditioner outdoor air conditioners. It can be changed to be installed in both the type and the type of outdoor unit.

The present invention is applied to a water spraying apparatus for evaporating and cooling outdoor air sucked through a suction port by spraying and fine spraying on a screen installed outside the outdoor unit, and a direct inflatable air conditioner applied thereto.

10: outdoor unit 11: inlet
12: outlet 20: spraying spray device
30: Installation module 31: Installation frame
32: support frame 33: connection frame
34: connecting joint 35: elastic member
40: Screen module 41: Screen frame
42: screens 43,44: upper and lower screens
45: Shatterproof screen 50: Sprinkler module
51: Dispenser 52: Water supply line
53: injection nozzle 54, 55: first and second injection nozzles
56: valve unit 60:
61 to 63: First to third sensing units
70:

Claims (10)

An installation module installed on the inlet side of the outdoor unit,
A screen module installed in a space formed by the installation module,
A spraying module for spraying and finely spraying the sprayed water toward the screen module by an indirect spraying method to lower the temperature of the air introduced into the outdoor unit by using the evaporative cooling effect,
A sensing unit for sensing the condensation temperature of the outdoor unit, the temperature of the outdoor air and the discharge pressure,
And a controller for controlling the spraying module based on a result detected by the sensing unit,
The control unit generates a control signal for driving the injection nozzle and the valve unit provided in the spraying module based on the condensation temperature, the outdoor air temperature, the discharge pressure, and the evaporation condition sensed by the sensing unit,
The installation module may include an installation frame formed in a shape corresponding to the shape of the inlet,
A support frame installed at both ends of the installation frame toward the outside of the outdoor unit,
And a connection frame connecting an upper end of the installation frame and an outer end of the support frame,
Wherein the installation frame, the support frame, and the connection frame are formed by coupling circular pipes or rectangular pipes using different connecting joints so that the angles can be adjusted in accordance with the shape and size of the outdoor unit, Device. delete delete The method according to claim 1,
The screen module includes a screen frame formed in a shape corresponding to an outer shape of a space formed by the installation frame, the support frame, and the connection frame,
And a screen installed in a space formed by the screen frame,
The spraying zone of the screen is provided in one or more,
Wherein when the plurality of spraying areas are provided, the area ratio of the plurality of spraying areas is changed to correspond to the structure, capacity, and spraying conditions of the spraying device. 5. The method of claim 4,
The screen is made of a material of flame retardant or nonflammable material so that the sprayed fine sprayed particles come into contact with hot outdoor air sucked into the outdoor unit to improve the evaporative cooling effect,
And a scattering prevention screen for preventing direct contact of the importer with the cooling coil is installed in the intake port of the outdoor unit. 5. The method of claim 4,
Wherein the spraying module includes a spraying pipe horizontally installed at a lower end of the installation frame,
A water supply pipe for supplying water to the spray tube, and
And a spray nozzle installed in the spray tube for sprinkling and atomizing water toward the screen,
Wherein the spray nozzle comprises a first spray nozzle spraying and fine spraying in an upper region of the screen,
A second spray nozzle spraying and fine spraying in a lower region of the screen,
Wherein a plurality of the first and second spray nozzles are provided, and the spray nozzles are spaced apart from each other by a predetermined interval. The method according to claim 6,
Wherein the water supply pipe is provided with a valve unit which is opened and closed to supply or block water,
Wherein the first and second spray nozzles are installed to spray and spray at predetermined spray angles so as to increase spraying and spraying efficiency,
The atomization angle is set at an angle of 30 DEG to 80 DEG considering the heat exchange area,
Wherein the spray nozzles are sprayed in a circular or polygonal shape, respectively. A spraying apparatus according to any one of claims 1 to 7, which is sprayed and sprayed by an indirect spraying method to cool air introduced into an outdoor unit by using an evaporative cooling effect Direct inflatable air conditioner with spraying device. A control method of a direct inflatable type air conditioner to which the spraying apparatus according to claim 8 is applied,
(a) sensing the condensation temperature of the outdoor unit, the outdoor air temperature, and the discharge pressure at the sensing unit when the compressor and the condensing fan are driven by starting the operation of the air conditioner,
(b) comparing the condensation temperature, the outdoor air temperature and the discharge pressure sensed by the control unit with a predetermined set value, and
(c) cooling the air introduced into the outdoor unit by water spraying and fine spraying on the screen installed on the outside of the outdoor unit based on the inspection result of the step (b) by an indirect spraying method, (Method of controlling applied direct inflatable air conditioner). 10. The method of claim 9,
In the step (c), the control unit sets the operation range according to the deviation value set by the manager, periodically sprinkles and finely sprays if the detected condensation temperature, outdoor air temperature, or discharge pressure is equal to or more than the upper limit value of the set operation range, Wherein the spraying and fine atomizing operation is stopped when the temperature of the water spraying device is below the lower limit of the range.

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