KR101685580B1 - Cooling Apparatus for Communication Equipment Using Condensing Water - Google Patents

Abstract

The present invention relates to a cooling apparatus for communications equipment using condensate. The cooling apparatus for communications equipment includes: an indoor unit (100) for implementing indoor cooling; and an outdoor unit (200) installed outside. The indoor unit (100) includes: a compressor (110) compressing a cooling medium; a condenser for cooling (120) implementing heat exchange by passing the cooling medium; an expansion valve (130) having a low temperature and low pressure when the cooling medium having passed through the condenser for cooling (120) passes; and a first indoor heat exchanger implementing cooling when the cooling medium having passed through the expansion valve (130) is collected to the condenser (110).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling device for a communication device using condensate,

The present invention relates to a cooling device for communication equipment using condensed water, and more particularly, to a cooling device for recovering condensate generated in an indoor heat exchanger during a cooling operation to a water tank of an outdoor unit to increase cooling efficiency.

A typical air conditioner uses evaporation heat that takes heat away from the surroundings when the refrigerant evaporates. As the refrigerant, liquids such as ammonia, freon, azeotropic mixed refrigerant and chloromethyl which are usually evaporated easily at low temperatures are used.

In this type of cooling device, the gaseous refrigerant compressed at a high pressure in the compressor is condensed into high pressure liquid refrigerant by heat exchange with the outside air through the condenser, and then is converted into low pressure spraying refrigerant through an expansion valve or capillary.

The low-pressure atomized refrigerant flows into the evaporator, is evaporated by heat exchange with cool air, and then flows into the compressor again. The cycle of the above-described process is circulated. At this time, the air cooled by the evaporation heat of the refrigerant generated in the evaporator, The air is blown to a predetermined space or a target object to be cooled.

That is, such a general cooling apparatus cools a predetermined space or a target object to be cooled by using a refrigerant whose phase change is easy, such as liquefaction and evaporation.

On the other hand, in the case of a communication base station or a communication vehicle, a large number of wired / wireless communication equipment are installed therein. Such communication equipment may cause various malfunctions such as contact failure and device malfunction due to frequent heat generation. The stability of operation can be ensured.

However, conventional cooling apparatuses for communication equipments have a disadvantage in that electric power is wasted due to adoption of a system which is driven by external power simply because it can not appropriately utilize natural cooling water according to external temperature.

Korean Registered Patent No. 10-760672 (Notification Date: September 20, 2007)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an air conditioner that recovers condensate generated in an indoor heat exchanger, And to provide a cooling device for communication equipment using condensed water to be increased.

According to an aspect of the present invention, there is provided a refrigerator comprising: an indoor unit for performing indoor cooling; And an outdoor unit installed outdoors,

The indoor unit includes:

A compressor for compressing the refrigerant; A cooling condenser for allowing the refrigerant to pass therethrough while allowing the refrigerant to pass therethrough; An expansion valve for reducing the temperature and pressure of the refrigerant passing through the cooling condenser; And a first indoor heat exchanger for allowing the refrigerant passing through the expansion valve to pass therethrough and then being returned to the compressor for cooling,

The outdoor unit includes:

A water tank for storing water so that water can be circulated; And an outdoor heat exchanger configured to heat-exchange water in the water tank,

The water in the water tank is provided with a water circulation line through the outdoor heat exchanger and through the cooling condenser of the indoor unit to the water tank,

A second indoor heat exchanger for allowing the indoor unit to be cooled by selectively passing water from the outdoor unit;

And a three-way valve for selectively allowing the water moving through the water circulation line to pass through the cooling condenser by selectively changing the water movement path so as not to pass through the second indoor heat exchanger if necessary,

And a recovery line connected between the first indoor heat exchanger and the water tank for allowing the condensed water generated by the operation of the first indoor heat exchanger to be recovered to the water tank.

In addition, the outdoor unit includes a variable capacity heat exchanger that operates according to a temperature condition and allows heat to be exchanged while passing water.

A variable capacity water supply line is provided between the variable capacity heat exchanger and the water pump so that the water in the water tank moves by the operation of the water pump. The variable capacity water supply line is opened and closed in accordance with the temperature condition And a variable displacement valve is provided.

The water circulation line includes a water movement line for allowing water passing through the outdoor unit to pass through the cooling condenser and a water recovery line for allowing the water passing through the cooling condenser to be returned to the water tank,

The water movement line includes a first water movement line through which water discharged from a water tank moves to an indoor unit after heat exchange, a second water movement line connected to the first water movement line and connected to the three- A third water movement line connected between the second indoor heat exchanger and the three-way valve for allowing water passing through the second indoor heat exchanger to move, and a fourth water movement line connected to the water passing through the three- .

As described above, according to the present invention, it is possible to realize an indoor cooling state suitable for each season, and the condensed water generated when the first indoor heat exchanger of the indoor unit is used is collected and sent to the water tank of the outdoor unit, The water passing through the outdoor unit can be sent to the first indoor heat exchanger in a state in which the temperature of the refrigerant is lowered during the heat exchange with the refrigerant in the condenser for cooling the indoor unit, so that the cooling efficiency can be increased accordingly.

In addition, the present invention is capable of achieving cooling while passing through a second indoor heat exchanger so that the water of the outdoor unit exerts an appropriate cooling state according to the seasonal temperature, thereby realizing a cooling state suitable for various outdoor environments.

Further, the present invention has the effect of increasing the cooling efficiency by allowing the variable capacity heat exchanger of the outdoor unit to operate when the temperature of the hot period or the winter time is not so low, so that heat exchange with water is performed together with the outdoor heat exchanger.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view illustrating a cooling system according to an embodiment of the present invention. FIG.
FIG. 2 is a schematic view for explaining a cooling apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic view for explaining a cooling apparatus according to an embodiment of the present invention, and is a view showing a natural cooling mode.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In FIGS. 1 to 3, the portion indicated by blue indicates a state where the actual refrigerant and water are circulated.

1, a cooling apparatus 1 for a communication equipment according to an embodiment of the present invention includes an indoor unit (not shown) 100 and an outdoor unit 200 provided on the roof of the building.

The indoor unit 100 includes a compressor 110 for compressing a refrigerant, a cooling condenser 120 for allowing a refrigerant discharged from the compressor 110 to pass therethrough, a refrigerant passing through the refrigerating condenser 120, And a first indoor heat exchanger (140) for exchanging heat with the refrigerant passing through the expansion valve (130) and then returning the refrigerant to the compressor (110) Cycle.

The outdoor unit 200 includes a water tank 210 for storing water and a water pump 230 for pumping water from the water tank 210 to the outdoor heat exchanger 220, And a variable capacity heat exchanger 240 for allowing water to pass through during the maximum cooling operation or in winter.

Of course, the outdoor unit is provided with one or more blowing fans (not shown).

According to an embodiment of the present invention, the first indoor heat exchanger (140) is an air-refrigerant heat exchanger that performs heat exchange with air, and recovers condensed water generated during a heat exchange operation for indoor cooling to a water tank A recovery line 142 is connected between the first indoor heat exchanger 140 and the water tank 210 of the outdoor unit.

On the recovery line 142, a recovery pump 144 for recovering the condensed water to the water tank is provided.

The indoor unit 100 may be provided with a second indoor heat exchanger 150 separately from the first indoor heat exchanger 140 and an indoor air blower 160 may be provided at one side thereof.

The water in the water tank 210 of the outdoor unit 200 may be pumped by the water pump 230 and may be connected to the outdoor heat exchanger 220 and / or the variable capacity heat exchanger 240 according to an embodiment of the present invention. The water circulation line is provided with a water circulation line 211 for discharging water from the water tank 210 and moving toward the cooling condenser 120 through the water circulation line 211 And a water recovery line 212 for allowing water, which has passed through the cooling condenser 120 and exchanged with the refrigerant, to be returned to the water tank 210.

The water movement line 211 includes a first water movement line 211a on which water discharged from the outdoor unit 200 moves and a second water movement line 211b on the side of the second indoor heat exchanger 150 from the first water movement line 211a. A second water movement line 211b formed between the second indoor heat exchanger 150 and the three-way valve 250 and a three-way valve 250 provided to change the water movement path while being branched, And a fourth water movement line 211d connected between the three-way valve 250 and the cooling condenser 120. The third water movement line 211c is connected to the third water movement line 211c.

In other words, the three-way valve 250 performs water cooling through the third water movement line 211c or the fourth water movement line 211d for each seasonal cooling mode (forced cooling mode / mixed cooling mode / natural cooling mode) To the condenser (120).

The water conveyed from the water tank 210 by the operation of the water pump 230 of the outdoor unit 200 is supplied to a water supply line 222 to be sent to the outdoor heat exchanger 220 and the variable capacity heat exchanger 240, And a variable capacity water supply line 242 connected to the variable capacity water supply line 242.

A variable displacement valve 244 may be provided on the variable displacement water supply line 242.

The air conditioning system according to an embodiment of the present invention having such a configuration differs in operation mode from season to season and will be described in detail as follows.

[compulsion Cooling mode ]

As shown in FIG. 1, the mode is operated in a hot summer, and is operated in a case where the temperature of the hot summer increases, particularly in the summer.

For example, if the set temperature is set at 35 degrees Celsius and the temperature difference is set at 3 degrees Celsius, the variable capacity heat exchanger 240 is operated when the temperature is 32 degrees Celsius or more, and the variable capacity heat exchanger 240 ).

In the forced cooling mode, first, a refrigerant cycle is performed by the operation of the compressor 110, and water is circulated by the operation of the outdoor unit 200 to perform heat exchange between water and refrigerant in the cooling condenser 120 of the indoor unit 100 .

The high temperature and high pressure refrigerant is discharged from the compressor 110 and passes through the expansion valve 130 through the cooling condenser 120 to be supplied to the first indoor heat exchanger 140. [ And then is returned to the compressor 110. At this time, the second indoor heat exchanger 150 is in a non-operating state.

At the same time, the water in the water tank 210 flows through the water supply line 222, the outdoor heat exchanger 220, and the water transfer line 211 through the water pump 230 by the operation of the outdoor unit 200 Pressure refrigerant discharged from the compressor 110 while passing through the refrigerant condenser 120 so that the temperature of the refrigerant is lowered and the expansion valve 130 and the first indoor heat exchanger 140 And the room air is cooled by blowing air by the indoor blower 160. [

At this time, when the water passes through the water transfer line 211 to the condenser 120 for cooling, the water is passed through the three-way valve 250. The water is passed through the second indoor heat exchanger 150 and the three- The third water movement line 211a connected to the fourth water movement line 211d is not in a state of being able to move to the cooling condenser 120 since the third water movement line 211d is blocked by the three-way valve 250, Only the water in the water tank 211b and 211c flows through the three-way valve 250 and the cooling condenser 120 and is returned to the water tank 210 through the water recovery line 212 .

Condensate is generated by the operation of the first indoor heat exchanger 220. The condensed water flows into the water tank 210 of the outdoor unit 200 through the recovery line 142 by the operation of the recovery pump 144 The water temperature in the water tank 210 is lowered while being mixed with the water in the water tank 210.

In other words, the condensed water generated in the first indoor heat exchanger (140) flows into the water tank (210) and is mixed with the latent heat in the condensed water.

In addition, when the outdoor temperature is very high in summer, when the outdoor temperature becomes too high, that is, when the outdoor temperature becomes higher than the preset temperature set in the air conditioner, the variable capacity valve 244 is sensed by a temperature sensor (not shown) The water is also supplied to the water supply line 242 so that the water is passed through the variable capacity heat exchanger 240 and merged with the water movement line 211 connected to the variable capacity water supply line 242 to pass through the cooling condenser 120 The temperature of the water sent to the cooling condenser 120 of the indoor unit 100 is lowered (normally, lowered by 4 to 6 degrees), so that the heat exchange with the refrigerant is performed, So that the cooling ability can be efficiently exerted.

[ Hybrid cooling mode ]

As shown in FIG. 2, the combined cooling mode is operated in spring or autumn. In this case, unlike the forced cooling mode, the first indoor heat exchanger 140 and the second indoor heat exchanger 150 are simultaneously operated .

At this time, the refrigerant is circulated by the operation of the compressor 110 and is cooled through the first indoor heat exchanger 140 and the water in the water tank 210 of the outdoor unit 200 is cooled by the outdoor heat exchanger Through the second indoor heat exchanger 150 and the three-way valve 250 to the cooling condenser 120 when the refrigerant passes through the water transfer line 211 through the condenser 120 for cooling .

At this time, the three-way valve 250 is disconnected from the second water movement line 211b, and is opened to the second water movement line 211c, so that the water passing through the first water movement line 211a Passes through the third water movement line 211c through the second indoor heat exchanger 150 and passes through the three-way valve 250 and passes through the fourth water movement line 211d through the cooling condenser 120. [

Of course, water is also present in the second water movement line 211b, but is blocked by the three-way valve 250, so that water can not move.

The circulating water is recovered through the recovery line 142 by the operation of the first indoor heat exchanger 140 and is supplied into the water tank 210 and mixed with the water in the water tank 210 so that the temperature of the water Lower it.

Accordingly, when the combined cooling mode is operated in the spring or autumn season, the indoor cooling through the second indoor heat exchanger 150 and the heat exchange with water in the cooling condenser 120 are performed to the circulation of water in the outdoor unit 200 The first indoor heat exchanger 140 performs the indoor cooling simultaneously.

[ Natural cooling mode ]

As shown in FIG. 3, the natural cooling mode is a mode operated in winter and operated when the temperature is not very low even though it is winter. For example, the setting temperature is set to 3 degrees Celsius and the temperature difference to 3 degrees Celsius The variable capacity heat exchanger 240 is operated at a temperature of 0 ° C or higher and the variable capacity heat exchanger 240 is not operated when the temperature is lower than 0 ° C.

Basically, since the outdoor temperature is low, the refrigerant cycle due to the operation of the compressor 110 is not operated, and only the circulation operation of the water by the operation of the outdoor unit 200 causes the indoor heat- .

Therefore, the first indoor heat exchanger 140 is not in operation and is in a stopped state.

The water circulation operation is a state in which the first indoor heat exchanger 140 is in a stopped state and thus no condensed water is generated and no condensed water flows into the water tank 210. Under such conditions, The water in the second indoor heat exchanger 210 is mixed with the water movement line 211 via the water supply line 222 through the outdoor heat exchanger 220 and the second water movement line 211b is blocked, So that indoor cooling is performed while passing through the indoor heat exchanger 150.

The water passing through the second indoor heat exchanger 15 passes through the third water transfer line 211c and the third water valve 250 and flows through the fourth water transfer line 211d through the cooling condenser 120 And then flows into the water tank 210 again through the water recovery line 212.

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 exemplary embodiments. 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, But fall within the scope of the appended claims.

1: Air conditioner for communication equipment
100: indoor unit
110: compressor
120: Cooling condenser
130: expansion valve
140: first indoor heat exchanger
142: recovery line
144: Return pump
150: second indoor heat exchanger
160: Indoor blower
200: outdoor unit
210: Water tank
211: Water transfer line
211a: first water transfer line
211b: second water transfer line
211c: third water transfer line
211d: fourth water transfer line
212: water recovery line
220: first outdoor heat exchanger
222: Water supply line
230: Water pump
240: second outdoor heat exchanger
242: variable capacity water supply line
244: Variable capacity valve

Claims (4)

An indoor unit (100) for performing indoor cooling;
And an outdoor unit (200) installed outdoors,
The indoor unit (100)
A compressor (110) for compressing the refrigerant;
A cooling condenser 120 for allowing the refrigerant to pass therethrough while allowing the refrigerant to pass therethrough;
An expansion valve (130) that is cooled and cooled to a low temperature while passing through the cooling condenser (120);
And a first indoor heat exchanger (140) for allowing the refrigerant passing through the expansion valve (130) to pass through and then being returned to the compressor (110) for cooling,
The outdoor unit (200)
A water tank 210 for storing water so that water can be circulated;
An outdoor heat exchanger 220 arranged to heat water in the water tank 210;
/ RTI >
The water in the water tank 210 is supplied through the outdoor heat exchanger 220 to the water tank 210 through the cooling condenser 120 of the indoor unit 100,
A second indoor heat exchanger (150) for performing indoor cooling while selectively passing water from the outdoor unit (200) to the indoor unit (100);
A three-way valve (250) for selectively changing the water movement path so that the water traveling through the water circulation line passes through the second indoor heat exchanger (150) or passes through the second indoor heat exchanger (150) and passes through the cooling condenser (120);
/ RTI >
A recovery line 142 connected between the first indoor heat exchanger 140 and the water tank 210 for recovering condensed water generated by the operation of the first indoor heat exchanger 140 to the water tank 210;
/ RTI >
The water circulation line includes a water movement line 211 for allowing the water passing through the outdoor unit 200 to pass through the cooling condenser 120 and the water passing through the cooling condenser 120 to be returned to the water tank 210 And a water recovery line (212)
The water movement line 211 includes a first water movement line 211a through which water discharged from the water tank 210 moves to the indoor unit 100 after heat exchange and a second water movement line 211b connected to the first water movement line 211a A second water transfer line 211b connected to the three-way valve 250 and connected to the second indoor heat exchanger 140 and the three-way valve 250 for branching the second indoor heat exchanger 140, A third water movement line 211c for allowing the coarse water to move and a fourth water movement line 211d for connecting the water passing through the three-way valve 250 to pass through the cooling condenser 120 A cooling device for communication equipment using condensed water.
The method according to claim 1,
Wherein the outdoor unit (200) includes a variable capacity heat exchanger (240) which is operated according to a temperature condition to allow heat to be exchanged while water is passing therethrough.
The method of claim 2,
A variable displacement water supply line 242 is provided between the variable displacement heat exchanger 240 and the water pump 230 to allow water in the water tank 210 to move by the operation of the water pump 230 , And the variable capacity water supply line (242) is provided with a variable displacement valve (244) which is opened or closed in accordance with a temperature condition.
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