KR101856743B1 - Air conditioner with evaporation cooler - Google Patents

Abstract

Provided is an air conditioning system integrated with an evaporation cooler, comprising: a casing including a plurality of air entrances formed on an outer wall and a plurality of accommodating spaces formed by an interior wall; a freezer disposed in one space among the accommodating spaces, providing cooling to the inside while a refrigerant circulates according to a freezing cycle, and including a filling material sprayed with cooling water that is heat exchanged with the refrigerant in a condenser where the refrigerant is condensed; and a plurality of damper portions installed in the interior wall in a distributed manner, and having an opening degree controlled by an operation mode such that the outer air introduced from the outside has different flow paths, wherein the operation mode is selected by the temperature and the humidity of the outer air.

Description

TECHNICAL FIELD [0001] The present invention relates to an evaporative cooler integrated air-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air conditioning system that maintains temperature and humidity constant for indoor air such as a building.

An air conditioning system is a device for adjusting a certain space to suitable temperature, humidity and airflow distribution for human activity and at the same time removing dust and the like in the air. However, when a large cooling load is required depending on the indoor space, there is a problem that the cooling due to the conventional constant temperature and humidity is inefficient because the energy required for cooling is high.

For example, summer computer rooms require a fairly large cooling load, especially when the use of computers is high. Therefore, it is necessary to install a separate freezer in the building in consideration of this. However, among the freezers, the turbo freezer having a high coefficient of performance has a problem that the initial investment cost such as a large-scale duct construction is high. The turbo chiller has a high coefficient of performance, but has a problem in that it is not suitable for a small indoor space with a large capacity.

In winter, when the outside air temperature is low, air can be cooled only by outside air. However, there is a problem that the outside air cooling can not be performed by the air conditioner itself. In addition, when the humidity is lower than the room-side air temperature, there is a problem that the power consumption increases because the compressor of the thermo-hygrostat is operated and the humidification is simultaneously performed.

Korean Patent Publication No. 10-2009-0118609 (disclosed on November 18, 2009) Korean Registered Patent No. 10-0545789 (registered on January 17, 2006) Korean Registered Patent No. 10-1090227 (Registered on November 30, 2011) Korean Patent Publication No. 10-2008-0084091 (disclosed on September 19, 2008)

The embodiments of the present invention have been made to solve the above-mentioned problems, and an object of the present invention is to provide an air conditioning system capable of effectively saving the energy required for cooling and maintaining constant temperature and humidity. More specifically, a plurality of operation modes are selected, and an energy saving can be achieved by each operation mode selected according to outdoor conditions.

In order to solve the above-described problems, an embodiment of the present invention provides a casing comprising: a casing including a plurality of air outlets formed on an outer wall and a plurality of accommodating spaces formed by inner walls; And a filler disposed at any one of the accommodating spaces and providing cooling to the indoor side while circulating the refrigerant according to a refrigeration cycle, and a filling material in which the cooling water heat exchanged with the refrigerant is spouted in the condenser in which the refrigerant is condensed; And a damper unit that is installed on the inner wall so that a plurality of openings are dispersedly installed in the outdoor unit and the openings are controlled in accordance with the operation mode so that outdoor air flowing from the outdoor unit has different flow paths, Thereby providing an evaporative cooler-integrated air-conditioning system to be selected.

The operation mode includes: 1) an outside air cooling mode in which incoming ambient air is supplied to the indoor side; 2) a mechanical cooling mode in which incoming ambient air is cooled by the operation of the freezer and supplied to the indoor side; and 3) And an evaporative cooling and cooling mode in which the cooling water is supplied to the room side by being cooled by the cooling water sprinkled on the filler material in the non-operating state of the refrigerator.

The inner wall of the inner wall surrounding the accommodation space in which the freezer is disposed is a heat insulating wall, and a double airtight damper may be installed on an inner wall of the damper portion surrounding the accommodation space in which the freezer is disposed.

The double airtight damper may be opened only in the evaporative cooling mode.

The outside air introduced in the outdoor air cooling mode may be humidified and cooled and supplied to the indoor side.

Wherein the refrigerator has a refrigeration cycle by a compressor, a condenser, an inflator and an evaporator, and the refrigerator further includes a cooling coil through which cold water whose temperature is lowered by heat exchange with the refrigerant evaporated in the evaporator is introduced, The outside air can be cooled by passing through the cooling coil, and then supplied to the indoor side.

The refrigerator has a refrigeration cycle by a compressor, a condenser, an inflator, and a loop coil. In the mechanical cooling mode, the outside air may be cooled by passing through the loop coil, and then supplied to the indoor side.

The inlet port formed on the outer wall surrounding the accommodation space in which the refrigerator is disposed may be opened in the mechanical cooling mode.

As described above, according to the present invention, various effects including the following can be expected. However, the present invention does not necessarily achieve the following effects.

The air conditioning system according to an embodiment can integrate the air conditioner and the evaporative condenser refrigerator into a single casing to save energy required for cooling and constant temperature and humidity. Specifically, the air conditioning system is configured to be operated by any one of three different operating modes based on the temperature and humidity of the outside air, so that the energy saving effect is particularly excellent.

The flow path to the outside air can be effectively controlled by simple control of the damper unit constituting the air conditioning system. In addition, the air conditioning system can partially prevent the inflow of hot and humid air generated by the operation of the refrigerator into the air conditioner by forming the inner wall of the casing partly as a heat insulating wall and partially providing a double airtight damper.

1 is a schematic diagram of an evaporative chiller integrated air conditioning system according to an embodiment of the present invention;
2 is a schematic diagram showing the operating relationship of FIG. 1 in an ambient air cooling mode;
3 is a schematic diagram showing the operating relationship of FIG. 1 in a machine cooling mode;
Figure 4 is a schematic diagram showing the operating relationship of Figure 1 in an evaporative cooling mode.
5 is a schematic diagram of an evaporative cooler integrated air conditioning system according to another embodiment of the present invention.

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

1 is a schematic view of an evaporative cooler integrated air conditioning system according to an embodiment of the present invention. Referring to FIG. 1, the evaporative cooling system integrated type air conditioning system according to an embodiment of the present invention is controlled to operate in a different operating mode according to the temperature and humidity of the outside air. For this, the casing 100, the refrigerator 200, the damper unit 140, An apparatus 410, a humidifier 420, and the like. Such an air conditioning system includes an air conditioner that is integrally disposed inside a single casing 100 and a refrigerator 200 that provides cooling by evaporative cooling.

In accordance with the operation mode, the opening degree of the damper unit 140 is controlled to minimize the power consumption and maintain the cooling of the indoor air, that is, the indoor air, and the constant temperature and humidity. There are various spaces such as computer room and office where the air conditioning system can be applied.

The casing 100 includes an outer wall 110 and an inner wall 120. A plurality of air outflow openings 130 are formed in the outer wall 110. The air outflow inlet 130 includes, for example, an air inlet 131a (131b) for allowing outside air to flow into the casing 100, a vent 132 for allowing the inside air to flow into the casing 100, A supply mechanism 133 for discharging the indoor air introduced through the air vent 132 to the outdoor side or the outdoor air introduced through the air inlet 131a to the outdoor side again And an exhaust port 134 for exhausting the exhaust gas. At this time, the opening of the intake port 131a formed on the outer wall surrounding the accommodation space in which the refrigerator is disposed can be controlled according to the operation mode.

The casing (100) has a plurality of receiving spaces by the inner wall (120). The accommodating space provides a passageway space through which the outside air flowing from the outdoor side, the outside air in a harmonized state by cooling or humidification, the inside air flowing for ventilation, and the like pass through. In addition, the accommodation space provides various arrangements of the refrigerator 200, a humidifier 420 for humidification, a blower 410 disposed adjacent to the air outlet 130, and the like do.

Meanwhile, it is preferable that the inner wall surrounding the accommodation space in which the refrigerator (200) is disposed, among the inner walls (120), is preferably made of the heat insulating wall (122). The heat insulation wall 122 may be a two-stage heat separation barrier in which the heat insulation wall 122, the air layer, and the heat insulation wall 122 are disposed in layers for the purpose of improving the heat insulation effect. This is to prevent the high temperature and high humidity air generated by the operation of the refrigerator 200 from affecting the air in the receiving space other than the receiving space in which the refrigerator 200 is disposed.

A plurality of damper portions 140 are dispersedly installed on the inner wall 120. The damper unit 140 operates in such a manner that the opening degree of the damper unit 140 is controlled according to the operation mode so that the outdoor air flowing from the outdoor side has different flow paths. On the other hand, it is preferable that the double-gas-tight dampers 146 and 148 are installed on the inner wall of the damper part 140, which surrounds the accommodation space in which the refrigerator 200 is disposed.

That is, the double confidential damper 146 (148) is installed in the heat insulating wall 122. In the closed state, the double airtight dampers 146 and 148 effectively prevent hot and humid air generated in the refrigerator 200 from leaking to other accommodating spaces. The damper unit 140 according to an embodiment of the present invention is represented by first damper 141 to eighth damper 148 in the drawing. At this time, the sixth damper 146 and the eighth damper 146 represent the double airtight damper 146 (148).

The refrigerator (200) is disposed at any one of the accommodating spaces in the casing (100). The refrigerator (200) circulates the refrigerant according to the refrigeration cycle and provides cooling to the indoor side. The refrigerator 200 includes a compressor 210, a condenser 220, an inflator 230, an evaporator 240, a cooling coil 250, a filler 260, a water tank 272, a water separator 280, A cold water pump 292, a cooling water pump 294, and the like. Here, the cold water refers to a liquid circulating between the evaporator 240 and the cooling coil 250 disposed in another accommodating space in the casing 100.

The compressor 210 converts the low-temperature and low-pressure refrigerant gas into high-temperature, high-pressure compressed refrigerant gas so that the refrigerant gas can be more easily condensed. That is, the compressor 210 increases the pressure of the refrigerant to make the refrigerant liquefy even at a relatively high temperature. At the same time, the compressor 210 provides a compression force to cause the refrigerant to circulate.

The condenser 220 performs heat exchange between the high-temperature and high-pressure refrigerant gas supplied from the compressor 210. The refrigerant gas is radiated through the condensing coil, and the refrigerant passing through the condensing coil is condensed to cause a phase change to the liquid having middle temperature and high pressure. On the other hand, an upper water tank 272, in which cooling water having heat exchange with the condenser 220 is accommodated, is disposed below the condenser 220. At this time, the upper water tank 272 stores cooling water whose temperature is increased by absorbing heat from the refrigerant gas.

The inflator 230 lowers the pressure of the refrigerant flowing out of the condenser 220 so that the liquid refrigerant can easily evaporate even under relatively high temperature conditions. The inflator 230 is usually provided through an expansion valve. The expansion process is performed, for example, when a cross-sectional area of a flow path such as a nozzle or an orifice passes through a narrowing cross section, ) Is an enthalpy process. On the other hand, the inflator 230 can precisely control the amount of refrigerant flowing to the evaporator 240.

The evaporator 240 allows the low-temperature and low-pressure liquid refrigerant discharged from the inflator 230 and the cold water having a high temperature in the cooling coil 250 to exchange heat. At this time, the liquid refrigerant evaporates while absorbing heat in the cold water, and the cold water whose temperature has been lowered by heat exchange with the refrigerant evaporated flows into the cooling coil 250 to provide cooling.

On the other hand, the oil separator 280 prevents the lubricating oil, which is filled in the compressor 210, from flowing into the condenser 220. The compressor 210 is filled with lubricating oil in order to prevent wear occurring during the compression process, and the lubricating oil can be partially mixed with the refrigerant in the compression process.

The filler material 260 cools the cooling water stored in the upper water tank 272. That is, a filler 260 is disposed under the upper water tank 272, and the cooling water heat exchanged with the coolant is sprayed toward the filler 260. The filling material 260 is formed in such a manner that a plurality of pleated thin plates having a predetermined angle are stacked to increase the heat transfer area. As a result, the cooling water can be cooled while being in contact with the surface of the filler (260) while exchanging heat with the outside air flowing through the inlet (131a).

The lower water tank 274 receives cooling water falling after cooling in the filler 260. A cooling water circulation line connected to the cooling water spray is connected to one side of the bottom surface of the lower water tank 274. A cooling water pump 294 is provided in the cooling water circulation line. The cooling water pump 294 controls its rotation speed to the size of the cooling load.

The cooling coil 250 cools the outside air through heat exchange between the cold water whose temperature is lowered through the evaporator 240 and the outside air introduced through the inlet 131a. A cold water pump 292 is installed in the pipe connecting the cooling coil 250 and the evaporator 240.

The humidification device 420 is disposed at any other position in the accommodation space. The humidifying device 420 provides moisture to the incoming outside air. Here, the cooling coil 250 and the humidifying device 420 are respectively disposed in different accommodating spaces separated by inner walls.

On the other hand, in the front of the air supply mechanism 133 and the exhaust port 134 of the casing 100, an air blowing device 410 for forcibly blowing air to smoothly flow the air is disposed. The air blowing device 410 according to one embodiment is installed in front of the air supply mechanism 133 and the air exhaust port 134, respectively.

Specifically, the blower unit 410 includes a motor, a dustproof unit, and a fan unit. The anti-vibration unit is disposed on the lower side of the motor and minimizes vibration transmitted from the motor or transmitted to the motor. As a result, the durability of the motor can be improved and the noise generation can be reduced. The fan section includes a plurality of blades and directly or indirectly coupled to the motor and rotated. On the other hand, the air blowing device 410 can adjust the flow speed of the air by varying the shaft rotation speed of the motor.

The evaporative cooler integrated air conditioning system is selected differently according to the temperature and humidity of the outside air. Such an operation mode can be efficiently switched by automatic control, and energy required for indoor cooling can be remarkably saved.

Specifically, the operation mode includes: 1) an outside air cooling mode in which the introduced outside air is directly supplied to the indoor side; 2) a machine cooling mode in which incoming outdoor air is cooled by the operation of the refrigerator 200 and supplied to the indoor side; and 3) And an evaporative cooling and cooling mode in which the introduced outside air is cooled by cooling water sprinkled on the filler 260 in the non-operating state of the refrigerator 200 and supplied to the indoor side.

Fig. 2 is a schematic diagram showing the operating relationship of Fig. 1 in the ambient air cooling mode, Fig. 3 is a schematic diagram showing the operating relationship of Fig. 1 in the mechanical cooling mode, Fig. 4 is a schematic diagram showing the operating relationship of Fig. 1 in the evaporative cooling mode to be. The operation of the refrigerator 200, the cold water pump 292, and the cooling water pump 294 will be described below with reference to FIGS. 1 to 3, in which the respective dampers 140 are opened in each operation mode.

First, the first damper 141, the second damper 142, and the fifth damper 145 are opened and the remaining damper portions 140 are closed in the outdoor air cooling mode. The refrigerator 200, the cold water pump 292, and the cooling water pump 294 are all in an unoperated state. Specifically, the outside air is discharged to the room side through the intake port 131b, the second damper 142, the fifth damper 145, and the air supply mechanism 133. Then, the inside air is discharged to the outdoor side through the vent 132, the first damper 141, and the vent 134.

In the outdoor air cooling mode, the outdoor air temperature is low, so that the refrigerator 200 is not operated, and only the air blower 410 is driven to enable indoor cooling. However, if the humidity of the outside air is low, the humidity of the outside air can be adjusted through the humidifier 420. That is, in the outdoor air cooling mode, the outside air flowing through the intake port 131b is humidified and cooled and supplied to the indoor side. This outdoor air cooling mode has an advantage that the energy saving effect is particularly excellent.

Next, in the mechanical cooling mode, the first damper 141, the second damper 142, the fourth damper 144, and the seventh damper 147 are opened, and the remaining damper portions are all closed. At this time, both the refrigerator 200, the cold water pump 292, and the cooling water pump 294 are in an operating state. Specifically, the outside air is discharged to the room side through the intake port 131b, the second damper 142, the fourth damper 144, and the air supply mechanism 133. At this time, the outside air is cooled while passing through the cooling coil 250.

On the other hand, the inside air is discharged to the outdoor side through the vent 132, the first damper 141, and the vent 134. In addition, the intake port 130a formed in the outer wall 110 surrounding the accommodation space in which the refrigerator 200 is disposed in the machine cooling mode is opened.

In the machine cooling mode, since the outside air temperature is high, it is necessary to operate the refrigerator 200 to perform indoor cooling. However, the refrigerator 200 has an advantage that the energy efficiency is excellent by using the integrated refrigerator 200 having the high coefficient of performance of the evaporative condenser 220.

In the evaporative cooling and cooling mode, the first damper 141, the second damper 142, the sixth damper 146, and the eighth damper 148 are opened, and the remaining damper portions are all closed. Then, the refrigerator 200 and the cold water pump 292 are in the non-operating state and the cooling water pump 294 is in the operating state. That is, the sixth damper 146 and the eighth damper 148, which are the double airtight dampers 146 and 148, are opened only in the evaporative cooling mode.

Specifically, the outside air is discharged to the room side through the intake port 131b, the second damper 142, the sixth damper 146, the eighth damper 148, and the air supply mechanism 133. Then, the inside air is discharged to the outdoor side through the vent 132, the first damper 141, and the vent 134.

The evaporative cooling mode is selected when the temperature is higher than the ambient air, while the humidity is lower than the ambient air. At this time, the refrigerator 200 is not operated and only the cooling water pump 294 is operated. That is, when the cooling water circulated by the cooling water pump 294 is injected into the filler 260, the ambient air flowing through the intake port 131b can be cooled by the latent heat of evaporation. In the evaporative cooling and cooling mode, when the cooling water pump 294 and the air blowing device 410 are driven only, indoor cooling is possible, which has an advantage of saving energy. At this time, the cooling water pump 294 can control the number of rotations of the pump according to the size of the cooling load.

As described above, the air conditioning system according to one embodiment can operate according to any one of the outdoor air cooling mode, the machine cooling mode, and the evaporative cooling / cooling mode using one air conditioner.

Figure 5 is a schematic diagram of an evaporative chiller integrated air conditioning system in accordance with another embodiment of the present invention. Referring to FIG. 5, the operation of the damper unit 140 according to the operation mode is the same except that a part of the configuration of the refrigerator 200 is changed.

That is, the refrigerator 200 has a refrigeration cycle by the compressor 210, the condenser 220, the inflator 230, and the direct-expansion coil (DX coil) 350. In this case, the refrigerant introduced from the condenser 220 is directly expanded in the tube, and the temperature of the outside air is lowered by the evaporation heat. The refrigerant heat-exchanged in the coiled coil 350 is then introduced into the compressor 210.

In the mechanical cooling mode, the first damper 141, the second damper 142, the fourth damper 142, and the seventh damper 147 are opened, and the remaining damper portions are all closed. Both the refrigerator 200 and the cooling water pump 294 are in an operating state. Specifically, the outside air is discharged to the room side through the intake port 131b, the second damper 142, the fourth damper 144, and the air supply mechanism 133. At this time, the outside air flowing through the suction port 131 passes through the convoluted coil 350 and is cooled and then supplied to the indoor side. On the other hand, the inside air is discharged to the outdoor side through the vent 132, the first damper 141, and the vent 134. In addition, all of the air outlet openings 130 formed in the outer wall 110 surrounding the accommodation space in which the refrigerator 200 is disposed in the machine cooling mode are all opened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

100: casing 110: outer wall
120: inner wall 130: air outlet opening
140: damper part 122:
146, 148: Double airtight damper (sixth damper, eighth damper)
210: compressor 220: condenser
230: inflator 240: evaporator
250: Cooling coil 260: Filler
272: Upper water tank 274: Lower water tank
280: oil separator 292: cold water pump
294: Cooling water pump 350: Coupling coil
410: blower 420: humidifier

Claims (8)

A casing including a plurality of air outflow openings formed in outer walls and a plurality of accommodating spaces formed by inner walls;
A cooling coil having a refrigeration cycle in which a refrigerant circulates, a condenser, an expansion device, and an evaporator, the cooling coil having a refrigerating cycle in which the refrigerant is evaporated and heat exchanged with the refrigerant evaporated in the evaporator, A freezer comprising a filler material; And
A plurality of damper units dispersedly installed on outer and inner walls of the casing and operated so that the openings are controlled according to an operation mode so that outdoor air flowing in from the outdoor side has different flow paths,
The damper portion
A first damper provided between the accommodating space in which the ventilation hole is formed and the accommodating space in which the vent is formed; a second damper installed in the accommodating space in which the intake port is formed; A fifth damper installed between the accommodating space in which the humidifying device is disposed and the accommodating space in which the supply mechanism is disposed; a fourth damper installed between the accommodating space in which the second damper is provided and the accommodating space in which the refrigerator is disposed A seventh damper installed between the accommodating space in which the refrigerator is installed and the accommodating space formed with the exhaust port, and an eighth damper installed between the accommodating space in which the refrigerator is installed and the accommodating space in which the cooler is formed, ,
Wherein the operating mode is selected according to the temperature and humidity of the outside air.
The method according to claim 1,
The operation mode includes: 1) an outside air cooling mode in which incoming ambient air is supplied to the indoor side; 2) a mechanical cooling mode in which incoming outdoor air is cooled by the operation of the freezer and supplied to the indoor side; and 3) And an evaporative cooling and cooling mode in which the cooling water cooled by the cooling water sprinkled in the filler is supplied to the indoor side in a non-operating state of the evaporator cooler.
The method according to claim 1,
Wherein the inner wall surrounding the accommodation space in which the refrigerator is disposed is an insulating wall, and the sixth damper and the eighth damper are double airtight dampers.
3. The method of claim 2,
In the evaporative cooling and cooling mode
And the second damper, the sixth damper, and the eighth damper are opened and the outdoor air to be introduced is cooled and supplied to the indoor side through the first damper.
3. The method of claim 2,
In the outdoor air cooling mode
The indoor air is discharged to the outdoor side through the first damper and the outdoor air introduced by opening the second damper and the fifth damper is humidified and cooled and supplied to the indoor side.
3. The method of claim 2,
In the machine cooling mode
Wherein the outdoor air is discharged through the first damper to the outdoor side and the outdoor air introduced into the second damper and the fourth damper flows through the cooling coil to be supplied to the indoor side after being cooled, Wherein the air intake port formed on the outer wall of the accommodation space and the outer air introduced by opening the seventh damper are discharged to the outdoor side through the refrigerator.
The method according to claim 1,
The freezer
And a refrigeration cycle by a loop coil in which the refrigerant flowing in the condenser is expanded.
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