KR100773962B1 - Air conditioning system for communication equipment and controlling method thereof - Google Patents

Abstract

The present invention relates to the cooling of communication equipment, and in particular, it is disposed in indoor and outdoor spaces such as base stations and booths in which various communication equipments are installed, thereby reducing the size and noise and stably preventing malfunctions of communication equipment that may be caused by heat generation. The present invention relates to a cooling device for a communication device and a control method thereof.

The present invention is disposed in the base station of the communication equipment is installed, the expansion valve is installed on the refrigerant pipe, the refrigerant pipe extending from the expansion valve and a separate brine pipe is connected to the built-in pair of heat exchange tubes, respectively An indoor unit comprising a brine cooler, a compressor for compressing the refrigerant passing through the brine cooler, an indoor heat exchanger connected to a built-in heat exchange tube to a brine pipe extending from the brine cooler, and an indoor blower disposed close to the indoor heat exchanger. A module; As disposed outdoors of the base station, a pair of circulation pumps connected in parallel with the brine pipes extending from the indoor heat exchanger, and the brine pipes extending from the circulation pumps are connected to the built-in heat exchange tube and face each other connected in series. An outdoor unit module comprising a pair of outdoor heat exchangers, a pair of condensers in which a refrigerant pipe extending from the compressor of the indoor unit module is connected to each other in a built-in tube, and an outdoor blower disposed between the pair of outdoor heat exchangers. The expansion valve, the brine cooler, and the compressor of the indoor unit module are constituted by a double forming one cooling group, each cooling group is connected to a separate refrigerant pipe, and the two brine coolers are parallel with one brine pipe. Connected.

Air conditioner, communication equipment, heat exchanger, brine, indoor unit, outdoor unit

Description

Air conditioner for communication equipment and its control method {AIR CONDITIONING SYSTEM FOR COMMUNICATION EQUIPMENT AND CONTROLLING METHOD THEREOF}

1 is a schematic configuration diagram showing a cooling device for communication equipment according to the present invention,

2 is a flow chart showing a control method of a cooling device for communication equipment according to the present invention;

3 and 4 is a flow chart showing a control method of a cooling device for communication equipment according to another embodiment of the present invention,

5 and 6 is a schematic configuration diagram showing a cooling device for communication equipment according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: indoor unit module 110,110 ': expansion valve

120,120 ': brine cooler 121: tube for heat exchange

130,130 ': Compressor 140: Indoor heat exchanger

141: tube for heat exchange 150: indoor blower

160: refrigerant piping 170: brine piping

171,172,173,174: Control valve 180: Communication equipment

190: indoor temperature sensor 200: outdoor unit module

210: circulation pump 220: outdoor heat exchanger

221: tube for heat exchange 230: condenser

231: tube for heat exchange 240: outdoor blower

250: outdoor temperature sensor 260: brine temperature sensor

270,270 ': Louver 280: Receiver drier

300: base station

The present invention relates to the cooling of communication equipment, and more particularly, in the cooling of communication equipment installed in a base station, a booth, etc., by reducing the size of the cooling device to prevent noise and overheating and to prevent malfunctions, A cooling device for a communication device and a control method thereof.

A general air conditioner uses evaporative heat to take heat away from the surroundings when the refrigerant evaporates. As a refrigerant, a liquid such as ammonia, freon, azeotropic mixed refrigerant, chloromethyl, etc., which is easily evaporated even at low temperatures is generally used.

Such a conventional cooling device is a low-pressure sprayed refrigerant through expansion valves or capillaries after condensed into a high-pressure liquid refrigerant by heat exchange with the outside air while the refrigerant of the high-pressure compressed gas in the compressor passes through the condenser Is converted.

In addition, the low-pressure sprayed refrigerant is introduced into the evaporator and evaporated by heat exchange with the bet, and then flowed back into the compressor to circulate the cycle of the above-described process. It is blown to a predetermined space or object to be cooled by the blowing fan.

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

In particular, in the case of a communication base station or a communication vehicle, a plurality of wired and wireless communication equipments are installed therein, and these communication equipments can cause various malfunctions such as poor contact and equipment failure by frequent heat generation, thereby cooling four seasons all year round. Only in order to ensure the stability of the operation.

However, the conventional cooling device for communication equipment does not properly use the cold air of the natural state according to the external temperature, there is a disadvantage that the power consumption is very severe by simply adopting a method driven by external power.

The present applicant has already developed a cooling device for a communication device and a cooling control method to improve such a problem, and the invention that can maintain the cooling state of the indoor space to some extent stable even if a failure occurs in one component while using outside air. Has already filed (Application No. 2005-14790). However, there is a problem that the size of the outdoor unit is not only a little burden but also a strong noise.

The present invention has been made to solve the problems of the prior art as described above, while reducing the size and noise of the outdoor unit, by appropriately using the cold air of the natural state according to the external temperature to minimize the waste of power, the cooling state of the communication equipment It is an object of the present invention to provide a cooling device for a communication device and a control method thereof that can be stably maintained.

Cooling device for communication equipment of the present invention for achieving the above object,

It consists of an indoor unit module disposed in the indoor of the base station installed communication equipment and an outdoor unit module disposed in the outdoor of the base station,

The indoor unit module includes an expansion valve installed on the refrigerant pipe, a brine cooler in which a refrigerant pipe extending from the expansion valve and a separate brine pipe are respectively connected to a pair of built-in heat exchange tubes, and a refrigerant passing through the brine cooler. An indoor heat exchanger connected to a built-in heat exchange tube, a brine pipe extending from a brine cooler, and an indoor blower disposed close to the indoor heat exchanger;

The outdoor unit module has a pair of circulation pumps connected in parallel with the brine pipes extending from the indoor heat exchanger, and a pair of outdoor heat exchangers connected with the brine pipes extending from the circulation pump to the built-in heat exchange tube and connected in series. A pair of condensers facing each other in which a refrigerant pipe extending from the compressor of the indoor unit module is connected to each other in a built-in tube, and an outdoor blower disposed between the pair of outdoor heat exchangers,

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The expansion valve, the brine cooler and the compressor of the indoor unit module constitute a single cooling group and are composed of double (first and second cooling groups), each of which is connected to a separate refrigerant pipe and two brine coolers The brine pipe is characterized in that it is connected in parallel.

In the outdoor unit module, the pair of condensers are each equipped with a pair of heat exchange tubes connected to the refrigerant pipes extending from the respective cooling groups.

In addition, an indoor temperature sensor is installed in the indoor of the base station, an outdoor temperature sensor is installed in the outdoor of the base station, and a brine temperature sensor is installed in a portion where the brine pipe passes through the indoor heat exchanger and enters the outdoor unit module. It is characterized by.

On the other hand, the outside of the outdoor heat exchanger and the condenser is characterized in that the electric louver is installed in close proximity to each other.

The control method of the cooling device for communication equipment of the present invention,

A first step of measuring an indoor temperature, an outdoor temperature, and a brine temperature of the base station by an indoor temperature sensor, an outdoor temperature sensor, and a brine temperature sensor;

A second step of stopping the operation of the entire air conditioner when the indoor temperature is lower than the first preset value by comparing the indoor temperature with the first preset value;

Comparing the outdoor temperature with the brine temperature to operate the outdoor heat exchanger if the outdoor temperature is lower than the brine temperature, and to stop the operation of the outdoor heat exchanger if the outdoor temperature is higher than the brine temperature;

If the room temperature is higher than the second set point, the single cooling group (first cooling group) and the condenser are operated. If the room temperature is lower than the second set point, the single cooling group (first cooling group) and the condenser are stopped. Fourth step to make;

When the room temperature is higher than the third set point, the entire cooling group (first and second cooling groups) and the condenser are operated. When the room temperature is lower than the third set point, the operation of the single cooling group (second cooling group) is stopped. The fifth step;

Characterized in that it comprises a.

In addition, the electric louver is controlled to open and close according to the operation of the adjacent outdoor heat exchanger and the condenser, but when the entire cooling group (first and second cooling groups) and the condenser operate, all louvers close to the outdoor heat exchanger are closed. It is characterized by.

Preferably, the third step further includes a step 3-1 of stopping the operation of the outdoor blower if the brine temperature is lower than the fourth set value and operating the outdoor blower if the brine temperature is higher than the fourth set value. do.

More preferably, in the step 3-1, when the brine temperature is greater than the fourth set value and less than the fifth set value, the operation of the outdoor blower is stopped; Characterized in that it further comprises two steps.

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

1 is a schematic configuration diagram showing a cooling device for a communication device of the present invention.

As shown, the cooling device for communication equipment of the present invention comprises an indoor unit module 100 disposed in the indoor space of the base station 300 and an outdoor unit module 200 disposed in the outdoor space of the base station 300.

The indoor unit module 100 includes expansion valves 110 and 110 ′, brine coolers 120 and 120 ′, compressors 130 and 130 ′, an indoor heat exchanger 140 and an indoor blower 150.

The expansion valves 110 and 110 ′ are installed on two separate refrigerant pipes 160, respectively, and rapidly change the high pressure liquid refrigerant supplied from the refrigerant pipe 160 to a low temperature and low pressure fog state refrigerant.

Refrigerants used in the present invention are common refrigerants such as freon, ammonia, chloromethyl and azeotropic mixed refrigerants.

The brine cooler (120, 120 ') is a pair of heat exchange tube 121 is built-in and the brine pipe 170 installed separately from the refrigerant pipe (160) extending from the expansion valve (110, 110') is the heat exchange tube 121 are each connected to one.

The brine is mainly used in indirect freezing as a solution or liquid such as CaCl ₂ and NaCl having a low freezing point.

The compressors 130 and 130 'compress the refrigerant passing through the brine coolers 120 and 120' and are a conventional compressor that compresses the vaporized refrigerant to a high pressure.

At this time, the expansion valve (110,110 '), the brine cooler (120, 120') and the compressor (130, 130 ') of the indoor unit module 100 is composed of a double (first and second cooling group) forming one cooling group, each cooling The entire group is connected to a separate refrigerant pipe 160 and at the same time two brine coolers 120 and 120 'are connected in parallel with one brine pipe 170 installed separately.

Hereinafter, for convenience, the expansion valve 110, the brine cooler 120, and the compressor 130 of the two cooling groups are referred to as a first cooling group, and the expansion valve 110 ′, the brine cooler 120 ′, and the compressor 130 ′. ) Is called the second cooling group.

Therefore, the brine may pass through the brine coolers 120 and 120 'in parallel, so that the cooling degree of the brine can be stably maintained even if a defect occurs in any one of the brine coolers 120 and 120'.

The indoor heat exchanger 140 includes a heat exchange tube 141 and a brine pipe 170 extending from the brine coolers 120 and 120 ′ is connected to the heat exchange tube 141.

The indoor blower 150 is disposed on the heat transfer surface where heat exchange is performed in the indoor heat exchanger 140, and is configured to blow cold air formed by the heat exchange action of the indoor heat exchanger 140 toward the communication device 180.

In addition, the indoor blower 150 serves to increase the contact and heat exchange efficiency of the indoor heat exchanger 140 and the indoor air.

The outdoor unit module 200 includes a circulation pump 210, an outdoor heat exchanger 220, a condenser 230, and an outdoor blower 240.

The circulation pump 210 is composed of a pair and is connected in parallel with the brine pipe 170 extending from the indoor heat exchanger 140, each circulation pump 210 is installed in the inlet and outlet side control valves individually It is preferable to adjust the flow rate of the brine to pass through appropriately.

Accordingly, by adopting a double brine circulation structure in which a pair of circulation pumps 210 are installed in parallel, the circulation pump 210 of the other side may be operated even if a failure occurs in any one of the circulation pumps 210. Therefore, cooling of the communication equipment in the base station 300 can be stably maintained.

The outdoor heat exchanger 220 is disposed to face each other, a pair is connected in series, the heat exchange tube 221 is built-in, the brine pipe 170 extending from the circulation pump 210 is the heat exchange tube 221 and Connected.

As such, the outdoor unit module 200 adopts a dual structure in which a pair of outdoor heat exchangers 220 are arranged in series on the brine pipe 170, thereby increasing the heat exchange efficiency.

The condenser 230 is disposed to face each other adjacent to the side adjacent to the outdoor heat exchanger 220, a pair is connected in parallel, a pair of tubes 231 is built-in and extend from the compressor (130, 130 ') of the indoor unit module 100 The refrigerant pipe 160 is connected to the heat exchange tube 231.

The condenser 230 is a type of heat exchanger for condensing and liquefying a high-pressure refrigerant supplied from the compressors 130 and 130 '. The condenser 230 is connected in parallel with the refrigerant pipe 160 as described above and has a double tube 231 therein. By doing so, stable operation is ensured even when a fault occurs on either side, and the efficiency is higher.

In addition, a receiver dryer 280 may be installed on each of the refrigerant pipes 160 connecting the compressors 130 and 130 'and the condenser 230, and the receiver dryer 280 is discharged from the compressors 130 and 130'. Temporarily store high-pressure refrigerant and remove moisture and dust.

Two outdoor blowers 240 are disposed between the pair of outdoor heat exchangers 220, that is, between the pair of condensers 230, and in particular, close to the heat transfer surface at which the heat exchange of the outdoor heat exchanger 220 occurs. Is disposed so as to increase the contact and heat exchange efficiency of the outdoor heat exchanger 220 and the outside air.

Therefore, the present invention includes a brine cooler (120, 120 ') in the indoor unit module 100, and a pair of outdoor heat exchanger 220 and a pair of condenser 230 to face each other, as well as disposed between the squares therebetween. By positioning the outdoor blower 240, the space efficiency can be increased to reduce the size of the outdoor unit module 200, and the outdoor blower 240 can be configured in a small number, so that the noise can be further reduced.

In this case, an electric louver 270, 270 'may be installed to be adjacent to the outside of the outdoor heat exchanger 220 and the condenser 230, and the electric louver 270, 270' has a narrow plate at a predetermined interval. It is arranged horizontally to control the opening and closing according to the operation of the outdoor heat exchanger 220 and the condenser 230.

On the other hand, in the present invention, in order to effectively control the cooling operation, the indoor temperature sensor 190 is installed in the indoor of the base station 300, the outdoor temperature sensor 250 is installed in the outdoor of the base station.

The brine temperature sensor 260 is installed on a portion of the brine pipe 170 that passes through the indoor heat exchanger 140 and enters the outdoor unit module 200.
The indoor temperature sensor 190, the outdoor temperature sensor 250, and the brine temperature sensor 260 can measure the temperature of the indoor, outdoor, and brine locations in the indoor, outdoor, and brine pipes of the base station relatively accurately. Is installed in position. The method of installing the indoor temperature sensor 190, the outdoor temperature sensor 250, and the brine temperature sensor 260 may be sufficient as a conventional method. In addition, the indoor temperature sensor 190, the outdoor temperature sensor 250 and the brine temperature sensor 260 is a control unit for controlling each component of the cooling device according to the present invention (a conventional technique applied to the conventional cooling device It is configured to transmit the measured temperature value to the control unit. The measurement of the temperature, the transmission of the measured temperature value and the connection between the sensor and the control unit, which are frequently measured, are well known in the art.

The indoor temperature sensor 190, the outdoor temperature sensor 250, and the brine temperature sensor 260 detect the corresponding temperature, compare and determine the temperature, thereby selectively selecting the indoor heat exchanger 140 and the outdoor heat exchanger 220. Drive to cool the inside of the base station 300.

2 is a flowchart illustrating a method for controlling an indoor heat exchanger of a cooling device for communication equipment of the present invention.

First, the indoor temperature T _in , the outdoor temperature T _out , and the brine temperature of the object such as the base station 300 by the indoor temperature sensor 190, the outdoor temperature sensor 250, and the brine temperature sensor 260. (T _b ) is measured (S110). First stage.

The indoor temperature T _in thus measured is compared with the first set value T _s1 (S120), and when the room temperature T _in is lower than the first set value T _s1 , the entire air conditioner is stopped ( All louvers 270 and 270 'are turned off (S130). -Second stage.

And, by comparing the outdoor temperature (T _out ) and the brine temperature (T _b ) (S140), if the outdoor temperature (T _out ) is lower than the brine temperature (T _b ) to operate the outdoor heat exchanger 220 (outdoor heat exchange If the outdoor louver 270 'is ON (S150) and the outdoor temperature T _out is higher than the brine temperature T _b , the operation of the outdoor heat exchanger 220 is stopped (the outdoor heat exchanger louver 270' is OFF) ( S160). -Third step.

The third step is the outdoor temperature (T _out) a brine temperature (T _b) more than a hot summer months, and stop the operation of the outdoor heat exchanger 220, the outdoor temperature (T _out), a low spring than the brine temperature (T _b) To operate the outdoor heat exchanger 220 using outdoor air in the early summer, autumn and winter.

Next, comparing the room temperature T _in with the second set value T _s2 (for example, 26.5 ° C.) (S170), if the second set value T _s2 is higher than the single (first) cooling group (expansion valve) 110, the brine cooler 120 and the compressor 130, and the condenser 230 are operated (the louver 270 for the condenser is turned on) (S180), and the room temperature T _in is the second set value (T _s2 ). If it is less than or less to stop the operation of the single (first) cooling group (110, 120, 130) and the condenser 230 (S190). 4th step.

In addition, when the indoor temperature T _in is higher than the third set value T _s3 (for example, 27.5 ° C.) (S200), and higher than the third set value T _s3 , the entire (first and second) cooling groups 110 and 110. ', 120, 120', 130, 130 ') and the condenser 230 is operated (S210), if the room temperature (T _in ) is less than the third set point (T _s3 ) of a single (second) cooling group (110, 120') 130 ') to stop the operation (S220). 5th step.

At this time, when the operation of the single (second) cooling group 110 ′, 120 ′, 130 ′ is stopped, the heat exchange tube 231 in the condenser 230 connected thereto is no longer used.

In the fourth and fifth stages, when the cooling of the communication equipment 400 is not sufficient by only the operation of the outdoor heat exchanger 220, the first and second cooling groups 110, 120, and 130 are assisted with the outdoor operation. If only the operation of the heat exchanger 220 and the single (first) cooling group (110, 120, 130) is insufficient cooling of the communication equipment 400, the remaining single (second) cooling group (110 ', 120', 130 ') ) To maintain the overall heat exchange efficiency at a constant level.

However, when the entire cooling group 110, 110 ', 120, 120', 130, 130 'and the condenser 230 are operated in the indoor heat exchanger 140 (the condenser louver 270 is ON), the outdoor temperature T _out is a brine temperature. When the outdoor heat exchanger 220 is operated to be lower than T _b , the operation of the outdoor heat exchanger louver 270 ′ is stopped.

This is the case in which all the cooling groups 110, 110 ', 120, 120', 130 and 130 'are operated (condenser louver 270 ON) in the indoor heat exchanger 140, and the condenser louver 270 and the outdoor heat exchanger louver 270' are operated. This is to prevent the outdoor blower 240 from discharging the air in all directions to reduce the efficiency of the condenser 230 as well as to generate excessive noise.

On the other hand, the indoor heat exchanger 140 and the indoor blower 170 is simultaneously ON / OFF in accordance with the power ON / OFF of the entire cooling equipment in order to blow the cold air toward the cooling device 400.

Here, the first set point (T _s1 ), the second set point (T _s2 ) and the third set point (T _s3 ) of the base station 300 indoor, for example, 25 ° C, 26.5 ° C, 27.5 ° C, etc. Various modifications may be made according to various installed communication equipment.
The first set value T _s1 , the second set value T _s2 , and the third set value T _s3 may be set by a temperature setting method such as a cooling temperature of a conventional cooling apparatus according to the prior art. For example, when the first set value T _s1 , the second set value T _s2 , and the third set value T _s3 are set to 25 ° C., 26.5 ° C., and 27.5 ° C., respectively, an input / output panel employed in a conventional cooling device is used. Each temperature can be set, and the set temperature is inputted to a control unit for controlling each component according to the present invention (same as the configuration of the control unit according to the prior art applied to a conventional cooling device), Each component is controlled accordingly. Therefore, each temperature setpoint may be inputted and installed in advance at the product shipment stage when the temperature conditions are not fluid.In the case where the setpoint is changed and used according to the change of temperature conditions, the temperature setting method according to a conventional technique may be used. It is also possible to input and use the set value changed by. Such a method of setting the temperature set value, the setting means and the like are also sufficient as the known art in the technical field to which the present invention belongs.

In addition, the steps S130, S190, S210, and S220 return to step S110 according to the conditions of the room temperature (T _in ) and repeat the previous step, thereby making the outdoor heat exchanger 220, the first and second cooling groups 110, 110 ′. 120, 120 ', 130, 130') and the condenser 230 to respond in real time to the room temperature of the base station 300 changes.

3 is a flowchart illustrating a control method of a cooling device for a communication device according to an embodiment of FIG. 2.

In the third step, by comparing the outdoor temperature (T _out ) and the brine temperature (T _b ) (S140), if the outdoor temperature (T _out ) is lower than the brine temperature (T _b ) to operate the outdoor heat exchanger 220 After (S150), the brine temperature (T _b ) is compared with the fourth set value (T _s4 ) (for example, set within the range of 2 ~ 7 ℃) (S230), if the lower than the fourth set value (T _s4 ) outdoor blower In operation S240, when the brine temperature T _b is greater than or equal to the fourth set value T _s4 , the outdoor blower 240 is operated in operation S250. -Step 3-1.

In the step 3-1, when the brine temperature T _b is lower than the fourth set value T _s3 , the outdoor blower 240 is unconditionally stopped (S240), so that the brine is cold due to the low outdoor temperature during the winter season. It is suddenly cooled to prevent freezing of the brine pipe 170.

More preferably, the second step 3-1, as shown in Figure 4 is a brine temperature (T _b) of the fourth set value the fifth set value (T _s5) a brine temperature (T _b) not less than (T _s4) Compared to (for example, set within the range of 10 to 15 ° C.) (S250 ′), if it is lower than the fifth set value T _s5 , the operation of the outdoor blower 240 is stopped (S240), and the brine temperature (T _b ). If the fifth set value (T _s5 ) or more to operate the outdoor blower 240 (S250). Step 3-2.

Step 3-2 prevents an overload, vibration, or various noises from occurring on the side of the outdoor blower 240 during repeated frequent ON / OFF operations of the outdoor blower 240.
The first setpoint _Ts1 , the second setpoint _Ts2 , and the third setpoint _Ts3 may also be used to set or set the fourth setpoint _Ts4 and the fifth setpoint _Ts5 . same.

When the operation of the cooling group is turned off in the present invention, as shown in FIG. 5, the brine pipe 170 which is introduced into the brine cooler 120 or the brine pipe 170 connecting between the two brine coolers 120 is branched. In addition, it is preferable to install a separate control valve (individual ON / OFF valve or three-way valve) 171, 172 to move the brine cooler 120 which is not operated to bypass the brine.

In addition, when the operation of the outdoor heat exchanger 220 is turned off, as illustrated in FIG. 6, a brine pipe 170 connected to the outdoor heat exchanger 220 or a brine connected between two outdoor heat exchangers 220 is connected. It is preferable to branch the pipe 170 and install a separate control valve (using individual ON / OFF valves or three-way valves) 173 and 174 so that the brine can bypass the outdoor heat exchanger 220 which is not operated.

The cooling device for a communication device of the present invention configured as described above and a control method thereof operate as follows.

First, the air conditioner of the present invention includes a brine cooler (120, 120 ') in the indoor unit module 100, and arranged in a square facing the outdoor heat exchanger 220 and the condenser 230, between the outdoor blower 240 between By positioning, the space efficiency can be increased to reduce the size of the outdoor unit module 200 and the noise can be reduced by increasing the utilization of the outdoor blower 240.

In addition, since the condenser 230 is connected in parallel with the refrigerant pipe 160 and provided with a double tube 231 therein, stable operation is ensured even if a defect occurs on either side, and heat exchange efficiency is higher.

In addition, the control method of the air conditioner is an indoor temperature (T _in ), an outdoor temperature (T _out ), which is detected by the indoor temperature sensor 190, the outdoor temperature sensor 250, and the brine temperature sensor 260. And the outdoor heat exchanger 220, each cooling group (expansion valves 110 and 110 ', brine coolers 120 and 120' and compressors 130 and 130 '), as shown in FIGS. 2 to 4 according to the brine temperature T _b . The operation of the condenser 230 is determined.

Accordingly, the brine is heat-exchanged with natural cold in the outdoor heat exchanger 220 to be cooled to a predetermined temperature or bypassed to the indoor unit module 200 without being heat-exchanged in the outdoor heat exchanger 220.

In particular, the outdoor heat exchanger louver 270 'among the electric louver 270 installed outside the outdoor heat exchanger 220 and the condenser 230 operates the entire cooling group 110, 110', 120, 120 ', 130, 130' (for the condenser). When the louvers 270 are turned off (S210), the outdoor blower 240 may prevent the outdoor blower 240 from discharging air in all directions to reduce the efficiency of the condenser 230 or generate excessive noise.

Accordingly, the present invention is to reduce the size and noise while cooling the indoor space heat of the base station 300 by the indoor heat exchanger 140 in order to cool the temperature below the temperature that requires the brine according to the indoor / outdoor temperature and brine temperature By selectively operating the cooling groups 110, 110 ', 120, 120', 130 and 130 ', the condenser 230 and the outdoor heat exchanger 220, the use of the cool air is actively used and the use of the cooling group is controlled to control the use of refrigerant and electric power. Prevent waste.

In addition, the present invention is a pair of circulation pump (110,110 '), cooling groups (110, 110', 120, 120 ', 130, 130'), the condenser 230 is installed in series or in parallel, respectively, the brine pipe 170 is a brine cooler By adopting the brine circulation structure passing in parallel to (120,120 '), it is possible to increase the cooling efficiency and to maintain a stable cooling state of the communication equipment.

The cooling device for a communication device and the control method of the present invention configured as described above not only minimize the power consumption and maximize the cooling efficiency by appropriately using the cool air in the natural state according to the outside temperature while reducing the size and noise of the outdoor unit. By adopting the brine circulation structure and double outdoor heat exchange structure using the cooling group of, it has the useful effect of ensuring the high efficiency and reliability of cooling.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made within the spirit and scope of the present invention, and such modifications or variations are attached thereto. Belong to the claims.

Claims (8)

In the cooling device for communication equipment consisting of an indoor unit module disposed in the interior of the base station equipped with the communication equipment and an outdoor unit module disposed in the outdoor of the base station, The indoor unit module is. An expansion valve installed on the refrigerant pipe, a brine cooler in which a refrigerant pipe extending from the expansion valve and a separate brine pipe are respectively connected to a pair of built-in heat exchange tubes, and a compressor for compressing the refrigerant passing through the brine cooler. And an indoor heat exchanger having a brine pipe extending from a brine cooler connected to the built-in heat exchange tube, and an indoor blower disposed close to the indoor heat exchanger. The outdoor unit module, A pair of circulation pumps connected in parallel with the brine pipes extending from the indoor heat exchanger, and a pair of opposing outdoor heat exchangers connected with the brine pipes extending from the circulation pump to the built-in heat exchange tube and connected in series with each other, It consists of a pair of condensers facing the refrigerant pipes extending from the compressor of the indoor unit module in parallel to the tube and an outdoor blower disposed between the pair of outdoor heat exchangers, The expansion valve, the brine cooler and the compressor of the indoor unit module constitute a single cooling group and are composed of double (first and second cooling groups), each of which is connected to a separate refrigerant pipe and two brine coolers Cooling device for communication equipment, characterized in that connected to the brine pipe in parallel. The method of claim 1, And a pair of heat exchange tubes connected to the refrigerant pipes extending from the respective cooling groups in the pair of condensers in the outdoor unit module. The method according to claim 1 or 2, An indoor temperature sensor is installed in the indoor of the base station, and an outdoor temperature sensor is installed in the outdoor of the base station, and a brine temperature sensor is installed in a portion where the brine pipe passes through the indoor heat exchanger and enters the outdoor unit module. Cooling device for communication equipment. The method of claim 3, wherein Cooling device for communication equipment, characterized in that the electric louver is installed adjacent to the outside of the outdoor heat exchanger and the condenser. A method for controlling a cooling device for communication equipment according to claim 4, A first step of measuring an indoor temperature, an outdoor temperature, and a brine temperature of the base station by an indoor temperature sensor, an outdoor temperature sensor, and a brine temperature sensor; A second step of stopping the operation of the entire air conditioner when the indoor temperature is lower than the first preset value by comparing the indoor temperature with the first preset value; Comparing the outdoor temperature with the brine temperature to operate the outdoor heat exchanger if the outdoor temperature is lower than the brine temperature, and to stop the operation of the outdoor heat exchanger if the outdoor temperature is higher than the brine temperature; When the room temperature is higher than the second set point, the single cooling group (first cooling group) and the condenser are operated. When the room temperature is lower than the second set point, the single cooling group (first cooling group) and the condenser are stopped. A fourth step; When the room temperature is higher than the third set point, the entire cooling group (first and second cooling groups) and the condenser are operated. When the room temperature is lower than the third set point, the operation of the single cooling group (second cooling group) is stopped. The fifth step; Control method of a cooling device for communication equipment comprising a. The method of claim 5, The motorized louver is controlled to open and close according to the operation of the adjacent outdoor heat exchanger and the condenser, but when the entire cooling group (first and second cooling groups) and the condenser operate, all louvers close to the outdoor heat exchanger are closed. Control method of a cooling device for communication equipment characterized in that. The method according to claim 5 or 6, The third step may further include a step 3-1 of stopping the operation of the outdoor blower if the brine temperature is lower than the fourth set value and operating the outdoor blower if the brine temperature is higher than the fourth set value. Control method of air conditioner. The method according to claim 5 or 6, The third step may further include a third step of stopping the operation of the outdoor blower if the brine temperature is greater than the fourth set value and less than the fifth set value, and operating the outdoor blower if the brine temperature is greater than the fifth set value. Control method of a cooling device for communication equipment characterized in that.

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