KR101450557B1 - In direct cooler and air conditioner having the same - Google Patents

Abstract

 The indirect evaporation cooler of the present invention comprises: a plurality of heat exchange plates partitioning a heat radiation passage through which room air passes, an outdoor air, and a heat absorbing passage through which water flows, and dimples formed therein; The heat transfer area of the heat exchange plate is increased by the dimples, and the dimples induce turbulent flow formation, so that the cooling performance of the room air is high, and the water passing through the endothermic passage is absorbed by the endothermic heat Since the flow of the air quickly flows, there is an advantage that the heat of the indoor air is rapidly lowered.

Indirect evaporation cooler, heat radiation channel, endothermic channel, indoor air, outdoor air, water, heat exchange plate, dimple, hydrophilic layer

Description

 Technical Field [0001] The present invention relates to an indirect evaporative cooler and an air conditioner having the same,

 The present invention relates to an indirect evaporative cooler for indirectly exchanging indoor air with outdoor air and water by indirect heat exchange, and an air conditioner having the indirect evaporative cooler. More particularly, the indirect evaporative cooler includes a dimple for promoting heat transfer and a hydrophilic layer Coated indirect evaporative cooler and an air conditioner having the same.

 In general, an air conditioner is divided into a separable type and an integral type in which a room is cooled or cleaned by using a refrigerating cycle of a refrigerant composed of a compressor, a condenser, an expansion device, and an evaporator to create a more comfortable indoor environment for the user .

The separate type and the integral type are the same in function but the separate type indoor and outdoor units are connected to each other by a cooling / heat radiating device installed in the indoor unit, a heat radiating / cooling and compressing device installed in the outdoor unit, To integrate the functions of the house walls and holes in the wall of the house is installed directly by hanging device.

In the air conditioner, the room air is sucked into the air conditioner, and then the room temperature is lowered by depriving the room with the low-temperature low-pressure refrigerant passing through the evaporator in contact with the evaporator, and the moisture in the air condenses on the surface of the evaporator , And then discharged outside the air conditioner to cool the room.

Japanese Patent Publication No. 10-0598214 discloses a humidifying and dehumidifying device using a secant in which moisture is taken away by a desiccant while air passes through a desiccant and moisture adsorbed by the desiccant is evaporated by the heat of the heater to regenerate the desiccant have.

In the humidifying and dehumidifying device using the desiccant as described above, the indoor air heated by the heater passes through the desiccant and evaporates the moisture adsorbed by the desiccant by indirect heating or integrates the electric heater with the desiccant The moisture of the secant is evaporated by direct heating of the electric heater.

However, the humidifying and dehumidifying device using the desiccant as described above can only perform a dehumidifying function. Therefore, when the indoor unit is dehumidified and cooled, the indoor unit must be installed together with the air conditioner having a cooling function. A separate electric heater for regeneration of the desiccant is required, so that the risk of fire is high and maintenance cost is high due to the use of electric power of the electric heater.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an indirect evaporative cooling device for indirectly cooling indoor air while having high heat transfer performance and rapidly flowing water, and an air conditioner having the indirect evaporative cooling device.

Another object of the present invention is to provide an indirect evaporative cooling device and an air conditioner having the indirect indirect evaporative cooling device.

According to an aspect of the present invention, there is provided an indirect evaporative cooling apparatus comprising: a plurality of heat exchange plates each having a heat radiating passage through which indoor air passes, an outdoor air and a heat absorbing passage through which water flows, And a hydrophilic layer coated on the surfaces of the plurality of heat exchange plates.

The plurality of heat exchange plates are made of synthetic resin.

The plurality of heat exchange plates are made of aluminum.

The indirect evaporative cooling device according to the present invention comprises: a case having a compartment formed by a room air passage through which room air is sucked and then discharged, and an outdoor air passage through which the room air is sucked and then discharged; A dehumidification rotor which is dehumidified while passing room air through the room air passage and regenerates while passing outdoor air through the outdoor air passage; A regenerating mechanism for heating and regenerating the dehumidifying rotor; And an indirect evaporative cooler installed in the indoor air flow path and cooled by exchanging the indoor air dehumidified while passing through the dehumidification rotor with water and outdoor air to cool the indirect evaporative cooler, A plurality of heat exchange plates partitioning the heat absorbing flow path through which air and water pass and having dimples formed thereon; And a hydrophilic layer coated on the surfaces of the plurality of heat exchange plates.

And a refrigeration cycle including an evaporator provided in the indoor air passage and a condenser provided in the outdoor air passage.

The air conditioner is installed outdoors, and the case is connected to an indoor suction duct for sucking and guiding indoor air through the indoor air passage and an indoor discharge duct for discharging air passing through the indoor air passage.

The heat transfer heat exchanger of the present invention constructed as described above and the air conditioner having the heat exchanger of the present invention are characterized in that dimples are formed in a plurality of heat exchange plates in which indoor air is exchanged with outdoor air and water so that the dimples increase the heat transfer area of the heat exchange plate, So that the cooling performance of the indoor air is high and the water passing through the heat absorbing flow path quickly flows through the heat absorbing flow path, so that the temperature of the room air quickly drops.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view showing the principle of dehumidification and cooling in the first embodiment of the air conditioner according to the present invention, and FIG. 2 is a schematic configuration diagram of the first embodiment of the air conditioner according to the present invention.

1 and 2, the air conditioner according to the present embodiment includes a case 2, a refrigeration cycle 4 and a dehumidification rotor 6, and the room air I is introduced into the case 2 And is then supplied to the room after being cooled by the evaporator 24 of the refrigeration cycle 4 so that the outdoor air O is sucked into the case 2 to be frozen Is heated by the condenser (22) of the cycle (4), and after passing through the dehumidification rotor (6), the dehumidification rotor (6) is regenerated and then discharged to the outside of the room.

The case 2 forms an outer appearance of the air conditioner and passes through the room air I and the outdoor air O. The indoor air I flows through the indoor air flow path 11 And an outdoor air passage 12 through which the outdoor air O is sucked and discharged and then discharged.

The air conditioner can be installed in the room, and the outdoor air passage 12 and the outdoor can communicate with the outdoor duct. The indoor air passage 11 and the indoor air passage 11 can communicate with each other through the indoor duct. It is also possible that the indoor air passage 11 communicates with the room and the outdoor air passage 12 communicates with the outside.

It is preferable that the air conditioner is installed outdoors in consideration of the noise of the compressor 21 of the refrigeration cycle 4, the indoor blower 30 and the outdoor blower 40 to be described later, the indoor space utilization, and the like. And an indoor suction duct 13 for guiding indoor air to the room air flow path 11 is connected to the case 2 so that the air having passed through the indoor air flow path 11 is supplied to the indoor And the indoor discharge duct 14 is connected.

The case 2 is connected to the indoor air suction port 15 through which the indoor suction duct 13 communicates and the indoor air I is sucked and the indoor air discharge duct 14 communicated with each other, An indoor air discharge port 16 through which air is discharged is formed.

 The case 2 includes an outdoor air intake port 17 through which the outdoor air O is drawn into the outdoor air flow path 12 and outdoor air O passing through the outdoor air flow path 12, A discharge port 18 is formed.

The case (2) is provided with a barrier (19) for partitioning the outdoor air passage (11) and the outdoor air passage (12).

The case 2 is formed in a rectangular shape as a whole, and the barrier 19 is arranged long in the longitudinal direction of the case 2.

The barrier 19 prevents the indoor air I passing through the outdoor air passage 11 and the outdoor air O passing through the outdoor air passage 12 from being mixed with the case 2, And an outdoor air flow path 12, wherein the inside of the case 2 is divided into a first space in which the evaporator 24 and the like are installed,

And a second space in which the condenser 22 and the like are installed.

That is, the air conditioner constitutes an outdoor unit in which the case 2 and the barrier 19 constitute an indoor unit having a first space and the case 2 and the barrier 19 constitute an outdoor unit.

The first space formed between the case 2 and the barrier 19 constitutes the room air flow path 11 through the room air inlet 15 and the room air outlet 16, The second space formed between the outdoor unit 2 and the barrier 19 constitutes the outdoor air passage 12 through the outdoor air inlet 17 and the outdoor air outlet 18. [

The refrigeration cycle 4 includes a compressor 21, a condenser 22, an expansion mechanism 23 and an evaporator 24 so that the refrigerant passes through the compressor 21, the condenser 22, Is circulated through the evaporator (24), the mechanism (23), and the evaporator (24), and is absorbed in the evaporator (24).

The refrigeration cycle 4 is provided with a compressor 21, a condenser 22, an expansion mechanism 23 and an evaporator 24 in a case 2.

The compressor 21 compresses the refrigerant evaporated in the evaporator 24 and discharges the compressed refrigerant to the condenser 22. When the refrigerant is installed in the indoor air flow path 11, It may be installed in the outdoor air flow path 12 or in a machine room formed inside the case in which the indoor air flow path 11 and the outdoor air flow path 12 are separately formed.

 The condenser 22 is installed in the outdoor air passage 12 so that the outdoor air O is heated while being passed through the outdoor air passage 12.

The condenser 22 is provided between the dehumidification rotor 6 and the outdoor air intake port 17 so that the outdoor air O heated by the condenser 22 is regenerated by the dehumidification rotor 6 while passing through the dehumidification rotor 6 Respectively.

The expansion mechanism 23 is expanded before the refrigerant condensed in the condenser 22 is compressed by the compressor 21 and can be installed in the indoor air passage 11 or the outdoor air passage 12, The indoor air flow path 11 and the outdoor air flow path 12 may be separately provided in the machine room.

The evaporator 24 is installed in the indoor air flow passage 11 so that the room air I is cooled while passing through it.

The evaporator 24 is installed between the dehumidification rotor 6 and the indoor air discharge port 16 so that the room air O dehumidified while passing through the dehumidification rotor 6 is cooled by the evaporator 24.

On the other hand, the dehumidification rotor 6 has a desiccant 7 in which the indoor air I sucked into the indoor air intake port 15 passes and moisture of the indoor air I is absorbed, And a secant rotating mechanism 8 for rotating the desiccant 7.

The desiccant (7) is composed of meso silica (7), which is alternately folded in a cylindrical shape, with a plane fiber and a corrugated fiber sheet, and has excellent hygroscopicity due to its highly developed pore and surface area. Meso-Silica (SiO2)).

Here, the meso silica is a mesoporous silica having spherical silica particles and a silica precursor having a particle diameter of 10 to 1000 nm and a surfactant reacted with each other in a solvent to grow a cell portion made of silica and a surfactant component on the surface of the spherical silica particles, The resultant formed with the shell portion is heat-treated to remove the surfactant component of the shell portion, whereby a silica shell portion having pores with a predetermined diameter is formed in the place where the surfactant is removed.

The above meso silica has a pore size of 2 nm to 50 nm.

[Table 1]

sample Hygroscopicity (mL / g) Regeneration temperature (℃) Surface area BET Zeolite 0.37 153 780 Alumina 0.47 80 327 Meso silica 0.63 48 609

Table 1 shows the results of a test of desiccant regeneration zone and the like. As a result of comparing meso silica having a size of 200 nm and pores of 2 nm to 50 nm with zeolite and alumina, as shown in Table 1, meso silica The dehumidifying ability is relatively high because the amount of water absorbed per 1 g of the sample is higher than that of zeolite or alumina, and the regeneration temperature is relatively low, so that it can be regenerated by the relatively low hot wind.

The desiccant 7 is disposed so that a part of the desiccant 7 is located in the outdoor air passage 12 and the rest is located in the indoor air passage 11 so that the room air The adsorbed portion is moved to the outdoor air passage 12 and regenerated by the outdoor air O.

That is, the desiccant 7 is disposed between the indoor air flow passage 11 and the outdoor air flow passage 12 and has a portion (hereinafter referred to as a suction portion) where moisture is adsorbed while passing through the indoor air I (Hereinafter, referred to as " regenerating portion ") is alternately changed as the outdoor air O passes and moisture is adsorbed / evaporated.

The desiccant rotating mechanism 8 may be composed of a motor in which a rotating shaft is disposed at the rotational center of the desiccant 7 and may be composed of a belt wound around the outer circumferential surface of the desiccant 7 and a motor for rotating the belt .

 The air conditioner includes an indoor air blower 30 for sucking room air I through an indoor air inlet 15 and passing through an indoor air channel 11 and discharging the room air through an indoor air outlet 16, And an indoor air blower 40 for sucking outdoor air O through an outdoor air inlet 17 and passing through an outdoor air passage 12 and then discharging through an outdoor air outlet 18.

The indoor fan 30 and the outdoor fan 40 can be rotated together by one driving source, and they can be rotated by respective driving sources. Hereinafter, each of the indoor fan 30 and the outdoor fan 40 will be described as having a driving source.

The indoor fan 30 is disposed in the indoor air flow path 11 and includes an indoor fan 32 and an indoor fan motor 34 for rotating the indoor fan 32.

The outdoor blower 40 is disposed in the outdoor air passage 12 and includes an outdoor fan 42 and an outdoor fan motor 44 for rotating the outdoor fan 42.

On the other hand, in the refrigeration cycle, since the amount of heat radiated from the condenser 22 is larger than the amount of heat absorbed by the evaporator 24, the size of the condenser 22 is formed to be larger than that of the evaporator 24, The indoor fan motor 34 and the outdoor fan motor 44 are driven so that the blowing amount of the outdoor fan motor O is larger than the blowing amount of the indoor air I blown to the evaporator 24. [

The desiccant 7 may be the same or similar to the blowing amount of the room air I passing through the adsorbing part and the blowing amount of the outdoor air O passing through the regenerating part without having a large difference.

Meanwhile, when all of the outdoor air O passing through the condenser 22 passes through the regeneration portion of the desiccant 7, the air conditioner according to the present embodiment not only increases the power consumption of the outdoor fan motor 44 Only a portion O 'sufficient for regeneration of the desiccant 7 out of the outdoor air I passing through the condenser 22 is discharged from the desiccant 7 through the desiccant 7, (7), and the remainder (O ") does not pass through the desiccant (7).

For example, when the air blowing amount of the indoor blower 30 is 8CMM and the blowing amount of the outdoor blower 40 is 24CMM, only 8CMM which is part of the blowing amount passing through the condenser 22 is blown to the desiccant 7, When the 16CMM is exhausted without passing through the desiccant 7, the power consumption of the outdoor fan motor 44 is lower than when all the 24CMM pass through the desiccant 7, and the desiccant 7 passes through all 24CMM The pressure loss and the resulting noise are reduced.

Only the portion O 'of the outdoor air O that has passed through the condenser 22 flows into the desiccant rotor 6 and particularly to the desiccant 7 and the rest O' 6) in particular not to flow into the desiccant (7) but to be evacuated outdoors.

The outdoor air passage 12 is formed with a plurality of the dispersion passage portions 50 and 60 in which the outdoor air O is dispersed between the condenser 22 and the outdoor air discharge opening 18, When the dehumidification rotor 6 is disposed in only one of the plurality of the dispersion flow passages 50 and 60, a part O 'of the outdoor air O flows through the dehumidification rotor 6, 7 of the outdoor air O is discharged to the outdoor air discharge port 18 after passing through the dispersed flow path portion 50 in which the dehumidification rotor 6 is disposed, 60, and is then discharged to the outdoor air discharge port 18.

The plurality of the dispersion flow paths 50 and 60 are connected to the regeneration flow path 50 through which the outdoor air O 'passing through the condenser 22 passes to be passed to the dehumidification rotor 6, And an exhaust flow path portion 60 through which the outdoor air O " passing through the condenser 22 passes so as not to flow into the desiccant rotor 6, particularly the desiccant 7.

The desiccant 7 is disposed between the indoor air passage 11 and the regenerating passage portion 50 so that the room air I in the indoor air passage 11 is connected to the desiccant 7 And the desiccant 7 is regenerated by the outdoor air O passing through the regeneration flow passage portion 50.

Here, the regeneration flow path portion 50 has one end communicating with the interior of the case 2 and the other end communicating with the outdoor air outlet 18. [

Here, the exhaust flow path portion 60 is a portion of the outdoor air heated by the condenser 22, the rest of which is not introduced into the regeneration flow path portion 50, is bypassed to the dehumidification rotor 6, One end thereof communicates with the inside of the case 2 and the other end communicates with the outdoor air outlet 18.

That is, the outdoor air flow path 12 includes a suction / heating flow path portion 66 having a space communicating with the outdoor air intake port 17, in which the outdoor air blower 40 and the condenser 22 are disposed, a suction / A regeneration flow path portion 50 having one end communicating with the outdoor air outlet port 66 and the other end communicating with the outdoor air outlet port 18 and having a part of the desiccant rotor 6, And an exhaust passage portion 60 through which the other end communicates with the outdoor air discharge port 18 and in which a part of the desiccant rotor 6, particularly the desiccant 7, is not disposed.

On the other hand, in the case 2, outdoor air passage partitioning means 68 for partitioning the condenser 22 and the outdoor air discharge opening 18 into a regeneration passage portion 50 and an exhaust passage portion 60 is formed.

The outdoor air passage partitioning means 68 is composed of partition walls which are arranged in the outdoor air passage 12 so that one end thereof is close to the condenser 22 and the other end is close to the outdoor air outlet 18.

 In the air conditioner according to the present embodiment, when the heating mechanism 70 is installed in the regeneration flow path unit 50, the heated outdoor air passing through the condenser 22 is reheated by the heating mechanism 70, The regenerated portion of the rotor 6, particularly the desiccant 7, is heated and regenerated.

 The heating mechanism 70 is composed of a heating coil connected to the external hot water supply source by the hot water pipes 72 and 74 and through which the hot water supplied from the external hot water supply source passes.

The external hot water supply source may be a boiler installed in the same building as the air conditioner according to the present embodiment and connected to the hot water pipes 72 and 74, or may be constituted by district heating work.

In the air conditioner according to the present embodiment, the indoor air flow path 11 is provided with an indirect evaporative cooler 80 for cooling the room air I separately from the evaporator 24, and the desiccant rotor 6, The indoor air passed through the evaporator 7 can be multi-stage cooled by the indirect evaporative cooler 80 and the evaporator 24.

The indirect evaporative cooler 80 is installed between the evaporator 24 and the room air outlet 16 and is dehumidified by the dehumidification rotor 6, particularly desiccant 7, The room air dehumidified by the desiccant rotor 6, particularly the desiccant 7 and the evaporator 24 and dehumidified by the desiccant rotor 6, in particular the desiccant 7, 24 before being cooled.

Hereinafter, the indirect evaporative cooling device 80 is a device in which the indoor air I is indirectly cooled by heat exchange with at least one of the outdoor air O and water, and the indoor air I that has been dehumidified while passing through the dehumidification rotor 6 And is installed in the indoor air passage 11 so as to be cooled.

The indirect evaporation cooler 80 is provided with a heat radiation passage 82 through which room air I passes and a heat absorbing passage 84 through which outdoor air O passes, I) is heat-exchanged with outdoor air (O) passing through the heat absorbing flow path (84) and cooled.

The indirect evaporative cooler 80 further includes a cooling fan 88 for blowing outdoor air to the heat absorbing flow path 84 of the indirect evaporative cooler 80.

The indirect evaporative cooler 80 is connected to a heat absorbing flow path intake path 87A for allowing outdoor air to be sucked into the heat absorbing flow path 84 and a heat absorbing path exhaust path 87B for exhausting outdoor air passing through the heat absorbing path 84 do.

The heat absorbing flow path suction path 87A may be provided so as to allow the outside of the case 2 to communicate with the heat absorbing flow path 84 so that the outdoor air outside the case 2 is sucked into the heat absorbing flow path 84, It is also possible to provide the outdoor air passage 12 and the heat absorbing flow passage 84 so that the outdoor air of the outdoor air passage 12 is sucked into the heat absorbing flow passage 84. Hereinafter, It is explained that the outdoor air passage 12 and the heat absorbing passage 84 are provided to communicate with each other.

One end of the heat absorbing channel intake duct 87A is connected to the heat absorbing channel 84 of the indirect evaporative cooling unit 80 and the other end of the heat absorbing channel intake duct 87A is connected to the regeneration channel unit 50, the exhaust channel unit 60, 66, and the duct is provided with a cooling fan 88 communicating with the duct.

The heat absorbing flow path suction passage 87A is connected to the suction / heating flow passage 66, particularly the condenser 22 (not shown), so that the outdoor air O drawn through the outdoor air flow passage 12 before passing through the condenser 22 is sucked. Or may be provided so as to communicate with the exhaust air passage portion 60 so that the outdoor air O " passing through the exhaust passage portion 60 is sucked , The regeneration flow path portion 50, the exhaust flow path portion 60, and the suction / heating flow path portion 66 may be provided so as to communicate with the flow path portion closest to the indirect evaporation cooling device 80.

The heat absorbing flow path suction passage 87A is connected to the suction / heating flow passage 66, in particular, between the condenser 22 and the indoor air suction port 17, and the outdoor air sucked into the heat absorbing flow path suction passage 87A flows through the condenser 22 The outdoor air of relatively low temperature is sucked into the heat absorbing flow path 84 of the indirect evaporative cooling device 80 as compared with the case where the outdoor air is provided so as to communicate with the regeneration flow path portion 50 and the exhaust flow path portion 60 , The cooling performance of the indirect evaporative cooler 80 becomes high.

The flow rate of the outdoor air O 'passing through the regenerative rotor 6 is not changed when the heat absorbing flow path intake passage 87A is provided so as to communicate with the exhaust flow path portion 60 so that the regenerative capacity of the regenerative rotor 6 is cooled Regardless of whether the fan 88 is driven or not.

On the other hand, the heat absorbing flow passage 87B may be provided so that the outside of the case 2 and the heat absorbing flow passage 84 are communicated with each other so that the outdoor air passing through the heat absorbing flow passage 84 is exhausted to the outside of the case 2, It is also possible to provide the indoor air passage 11 and the heat absorbing passage 84 to communicate with each other so that the outdoor air passing through the passage 84 is exhausted to the indoor air passage 11, It is also possible that the outdoor air channel 12 and the heat absorbing channel 84 are communicated with each other so that the outdoor air channel 12 is exhausted to the outdoor air channel 12.

One end of the heat absorbing flow passage 87B is connected to the heat absorbing flow passage 84 of the indirect evaporative cooler 80 and the other end is connected to the outside of the case 2 and one of the indoor air passage 11 and the outdoor air passage 12 It is made up of ducts that are installed all the way.

When the heat absorbing flow passage 87B is provided so as to communicate with the indoor air flow passage 11, outdoor air having passed through the heat absorbing flow passage discharge passage 87B is sucked into the indoor air flow passage 11, Is mixed with the dehumidified room air (I), cooled by the evaporator (24), and discharged into the room, so that the room can be ventilated.

When the heat absorbing flow path discharge passage 87B is provided so as to communicate with the outside of the case 2, outdoor air passing through the heat absorbing flow path discharge passage 87B is directly exhausted outdoors.

When the heat absorbing flow passage 87B is provided so as to communicate with the outdoor air passage 12, the outdoor air passing through the heat absorbing flow passage 87B is exhausted to the outside after passing through the outdoor air passage 12. [

The indirect evaporation cooler 80 is installed in such a manner that the heat absorbing flow passage 87B is provided in communication with the outside of the case 2 or in communication with the outdoor air passage 12, A heat exchanger (not shown) for blocking the heat absorbing flow path 84 from the room air flow path 11 while covering the upper side of the heat absorbing flow path 84 so as not to be mixed with the indoor air passing through the indoor air flow path 11, And a cover 87C, and a duct is connected to the heat exchanger cover 87C.

  The indirect evaporative cooler (80) further includes a water supply unit (90) for supplying water to the heat absorbing flow path (84).

Here, the water supplied into the heat absorbing flow path 84 functions not only to cool the outdoor air passing through the heat absorbing flow path 84 but also to lower the temperature of the indirect evaporative cooling device 80 itself.

That is, the indirect evaporative cooling unit 80 is a water / air-cooled indirect evaporative cooling unit that indirectly cools the indoor air I and the water supplied to the water supply unit 90 and the outdoor air sucked in the outdoor air flow path 12, The heat absorbing flow passage 84 is opened in the vertical direction and the heat radiation flow passage 82 is opened in the horizontal direction so that the flow of water and the drainage of the water supplied from the portion 90 are facilitated.

The water supply portion 90 is provided below the heat exchanger 86 to receive the water dropped by the heat exchanger 86 and water discharged from the water receiver to the upper side of the heat absorbing flow path 84 A water supply line 94 having one end connected to the water receiver 92 and the other end positioned above the heat absorbing flow path 84; And a water pump 96 installed in the water supply line 94 or the water receiver 92.

The water receiver 92 is formed with a through-hole through which the heat absorbing flow passage inlet passage 87A passes.

The water supply line 94 is provided at its other end with a water injection portion such as a nozzle for injecting water toward the heat absorbing flow path 84.

The water injection portion such as a nozzle is provided to inject water toward the heat absorbing flow path 84 while being positioned between the heat exchanger cover 87C and the heat exchanger 86, .

3 is a partially cutaway perspective view of the indirect evaporative cooler shown in Fig.

 The indirect evaporation cooler 80 is formed by the heat exchange passage 82 through which the room air I passes and the heat absorption passage 84 through which the outdoor air O and the water W pass are formed by the plurality of heat exchange plates 100 do.

The indirect evaporative cooler 80 includes a plurality of heat exchange plates 100 spaced apart from each other at a predetermined interval and disposed between the outer heat exchange plates 100A and 100B located outside and the outer heat exchange plates 100A and 100B at a predetermined interval And a plurality of inner heat exchange plates 100C.

One side of the outer heat exchange plates 100A and 100B forms an outer appearance and the other side constitutes one of the heat radiation passage 82 and the heat absorption passage 84.

One side of the inner heat exchange plate 100C constitutes the heat radiation passage 82 and the other side constitutes the heat absorption passage 84. [

The indirect evaporation cooler 80 is alternately formed with the heat radiation path 82 and the heat absorbing path 84 interposed between the inner heat exchange plates 100C.

The heat absorbing channel 84 opens in the vertical direction so that the water W and the outdoor air O pass in the vertical direction and the heat radiating channel 82 is provided in the opening direction of the heat absorbing channel 84 on the side of the heat absorbing channel 84 In the horizontal direction.

The plurality of heat exchange plates 100 are made of synthetic resin or aluminum, and the hydrophilic layer 101 is coated on the outer surface thereof.

Here, the hydrophilic layer 101 is a kind of film formed on the surfaces of the plurality of heat exchange plates 100 to allow water to flow quickly. The room air I is formed by the water W flowing into the heat absorbing flow path 84, The water W is cooled more rapidly when the water W flows slowly along the heat absorbing flow path 84 because the heat is exchanged through the heat exchanging plate 100 while flowing quickly through the heat absorbing flow path 101.

The hydrophilic layer 101 may be formed on both sides of each of the plurality of heat exchange plates 100 and may be formed on only one side of the heat exchange plate forming the heat absorption channel 84 among the plurality of heat exchange plates 100 .

The indirect evaporation cooler 80 may be formed by coating a plurality of heat exchange plates 100 with a hydrophilic layer 101 and then bonding a plurality of heat exchange plates 100. After the plurality of heat exchange plates 100 are combined, It is also possible to coat the hydrophilic layer 101 on the substrate 101.

On the other hand, the dimples 102 are formed in the plurality of heat exchange plates 100 to increase the heat transfer area and to induce turbulent flow of air to improve the heat transfer performance.

FIG. 4 is a graph showing a temperature change and a humidity change according to the first embodiment of the air conditioner according to the present invention.

Hereinafter, the operation of the air conditioner according to the present invention will be described with reference to FIG.

 First, in operation of the air conditioner, the indoor fan 30 and the outdoor fan 40 are driven, the compressor 21 is driven, the cooling fan 88 and the water feed pump 96 are driven, The mechanism 8 rotates the desiccant 7.

When the compressor (21) is driven, the refrigerant circulates through the compressor (21), the condenser (22), the expansion mechanism (23) and the evaporator (24).

When the indoor air blower 30 is driven, the indoor air passes through the indoor suction duct 13 and the indoor air suction port 15 in order, is sucked into the indoor air flow passage 11, and is passed through the desiccant rotor 6, 7). As shown in FIG. 4, the indoor air I passes through the dehumidifying part of the desiccant 7, and moisture is adsorbed to lower the humidity and increase the temperature. (P1- > P2) The indoor air I that has passed through the dehumidifying portion of the indoor heat exchanger 80 is cooled by passing heat through the heat dissipating passage 82 of the indirect evaporative cooling device 80 and outdoor air passing through the heat absorbing passage 84 and water. The room air having passed through the heat radiating passage 82 of the indirect evaporative cooling unit 80 is cooled again by the evaporator 24 and then passed through the indoor air discharge port 16 and the indoor discharge duct 14 in order (P3- > P4). ≪ / RTI >

When the outdoor air blower 40 is driven, the outdoor air O is sucked into the outdoor air flow path 12, particularly the suction / heating flow path portion 66, through the outdoor air intake port 17, The outdoor air O heated by the condenser 22 is heated by the condenser 22 as shown in Fig. The outdoor air O 'that is multi-stage-heated by the condenser 22 and the heating mechanism 70 is dehumidified by the dehumidifying unit 70. In this case, And passes through the regeneration section of the rotor 6, particularly the desiccant 7, to regenerate the desiccant 7. The outdoor air O 'having the desiccant 7 regenerated as described above is increased in moisture as it passes through the desiccant 7 and is discharged through the outdoor air discharge port 18 after the temperature is lowered. (S3- > S4)

On the other hand, the outdoor air O heated by the condenser 22 flows into the exhaust flow path portion 60 while the rest O '' not flowing to the regeneration flow path portion 50 flows into the exhaust flow path portion 60, (6) In particular, the desiccant 7 is bypassed, and is discharged to the outside through the outdoor air discharge port 18.

The present invention is not limited to the embodiment described above but may be applied to a case where the heat absorbing flow path 87B is not separately connected to the indirect evaporation cooler 80 and the heat absorbing flow path 84 of the indirect evaporative cooling device 80 is connected to the indoor air flowing path 87B. Outdoor air having passed through the heat absorbing flow path 84 of the indirect evaporative cooling device 80 can be directly discharged to the indoor air flow path 11 and can be directly connected to the heat absorbing flow path 11 of the cooler 80, 87B may communicate with the room through the case 2, and it is needless to say that various embodiments are possible within the technical scope of the present invention.

1 is a view illustrating a dehumidification and cooling principle of an air conditioner according to an embodiment of the present invention.

2 is a schematic configuration diagram of an embodiment of an air conditioner according to the present invention,

FIG. 3 is a partially cutaway perspective view of the indirect evaporative cooler shown in FIG. 2,

FIG. 4 is a graph showing a temperature change and a humidity change according to an embodiment of an air conditioner according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

  2: Case 4: Refrigeration cycle

6: Dehumidification rotor 7: desiccant

8: desiccant rotating mechanism 11: indoor air flow path

12: outdoor air flow channel 13: indoor air intake duct

14: outdoor air intake duct 15: indoor air intake

16: outdoor air outlet 17: outdoor air inlet

18: outdoor air outlet 21: compressor

22: condenser 23: expansion device

24: Evaporator 30: Indoor blower

40: outdoor blower 50: regeneration flow path

60: exhaust channel portion 66: suction / heating channel portion

69: outdoor air passage partitioning means 70: heating mechanism

80: indirect evaporation cooler 82: heat-

84: heat absorbing channel 86: heat exchanger

87A: Endothermic-flow-path intake duct 87B: Endothermic-

88: cooling fan 90:

92: Water receiver 94: Water supply line

  96: Water pump 100: Heat exchange plate

101: hydrophilic layer 102: dimple

Claims (8)

A plurality of heat exchange plates each having a heat dissipation passage through which indoor air passes, an outdoor air, and a heat absorbing passage through which water passes, the dimples being formed; And a hydrophilic layer coated on the surfaces of the plurality of heat exchange plates. The method according to claim 1, Wherein the plurality of heat exchange plates is a synthetic resin product. The method according to claim 1, Wherein the plurality of heat exchange plates are aluminum. A case having a compartment in which an indoor air passage for sucking indoor air and discharging the indoor air, and an outdoor air passage for discharging the outdoor air after the indoor air is sucked and discharged; A dehumidification rotor which is dehumidified while passing room air through the room air passage and regenerates while passing outdoor air through the outdoor air passage; A regenerating mechanism for heating and regenerating the dehumidifying rotor; And an indirect evaporative cooler installed in the indoor air flow path and cooling the indoor air dehumidified while passing through the dehumidification rotor by heat exchange with water and outdoor air, Wherein the indirect evaporative cooling unit comprises: a plurality of heat exchange plates each having a heat dissipation passage through which indoor air passes, an outdoor heat exchanger through which outdoor air and water pass, and dimples formed therein; And a hydrophilic layer coated on the surfaces of the plurality of heat exchange plates. 5. The method of claim 4, Wherein the plurality of heat exchange plates are synthetic resin materials. 5. The method of claim 4, Wherein the plurality of heat exchange plates are aluminum. 7. The method according to any one of claims 4 to 6, Further comprising a refrigeration cycle including an evaporator provided in the indoor air passage and a condenser provided in the outdoor air passage. 5. The method of claim 4, The air conditioner is installed outdoors, Wherein the case includes an indoor suction duct for sucking and guiding indoor air through the indoor air passage, and an indoor discharge duct for discharging air passing through the indoor air passage.

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