KR100687280B1 - Dual heat exchanging structure of air conditioning system for communication equipment - Google Patents

Abstract

A dual heat exchanging structure of an air conditioning system for communication equipment is provided to miniaturize size and noise of indoor and outdoor units, minimize power waste by properly using natural cooling air, and secure high efficiency and reliability of cooling. In a dual heat exchanging structure of an air conditioning system for communication equipment, a brine-type heat exchanger has a tube(111) for heat exchange. The brine-type heat exchanger is installed on a brine pipe(120). The brine-type heat exchanger is connected to a brine pump(220). A coolant-type heat exchanger has a tube(151) for heat exchange. The coolant-type heat exchanger is installed on a coolant pipe(140). The brine-type heat exchanger is connected to a compressor(160) and an expansion valve(130). Indoor and outdoor unit modules have indoor and outdoor blowers(170,260). The indoor blower(170) sequentially flows indoor air through the brine-type heat exchanger and the coolant-type heat exchanger to communication equipment. The outdoor blower(260) flows outdoor air sequentially through the brine-type heat exchanger and the coolant-type heat exchanger to the outside.

Description

DUAL HEAT EXCHANGING STRUCTURE OF AIR CONDITIONING SYSTEM FOR COMMUNICATION EQUIPMENT}

1 is a block diagram showing a double heat exchange structure of the cooling device for communication equipment according to the present invention,

Figure 2 is a perspective view showing a double heat exchange structure of the indoor unit module of the cooling device for communication equipment according to the present invention,

3 is a perspective view showing a double heat exchange structure of an outdoor unit module of a cooling device for communication equipment according to the present invention;

4 is a flowchart illustrating a control method of a double heat exchange structure of a cooling device for communication equipment according to the present invention.

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

100: indoor unit module 110: first indoor heat exchanger

111: heat exchange tube 120: brine piping

130: expansion valve 140: refrigerant piping

150: second indoor heat exchanger 151: tube for heat exchange

160: compressor 170: indoor blower

180: indoor temperature sensor 200: outdoor unit module

210: first outdoor heat exchanger 211: tube for heat exchange

220: brine pump 230: second outdoor heat exchanger

231: tube for heat exchange 240: third outdoor heat exchanger

241: tube for heat exchange 250: fourth outdoor heat exchanger

251: tube for heat exchange 260: outdoor blower

270: outdoor temperature sensor 280: brine temperature sensor

300: base station 400: communication equipment

V: blower

The present invention relates to the cooling of communication equipment, and more particularly, to reduce the size of the cooling equipment for communication equipment installed in base stations, booths, etc., improve heat exchange efficiency, and to prevent noise, overheating and malfunctions, thereby stably protecting communication. A double heat exchange structure of an air conditioner for equipment.

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.

The cooling device is a gaseous refrigerant compressed to high pressure in the compressor is condensed into a high-pressure liquid refrigerant by heat exchange with the outside air through the condenser, and then converted into a low-pressure sprayed refrigerant through expansion valves or capillaries.

The low-pressure sprayed refrigerant is introduced into the evaporator, evaporated by heat exchange with the bet, and then introduced into the compressor to circulate the cycle of the above-described process, wherein the air cooled by the heat of evaporation of the refrigerant generated in the evaporator is a blower fan. The air is blown to a predetermined space or object to be cooled by the air.

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.

On the other hand, 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 contact failure and equipment failure due to 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 invention has been made to solve the problems of the prior art as described above, while reducing the size and noise of the indoor unit and the outdoor unit, by using the cool air of the natural state according to the external temperature appropriately to minimize the power consumption and the cooling state of the communication equipment The purpose is to provide a double heat exchange structure of the cooling device for communication equipment that can maintain a stable.

The dual heat exchange structure of the cooling device for communication equipment of the present invention for achieving the above object is a brine type heat exchanger having a heat exchange tube therein and installed on a brine pipe and connected to a brine pump, for heat exchange therein In the heat exchange structure of the cooling device for communication equipment including a heat exchanger of the refrigerant type provided with a tube and installed on the refrigerant pipe and connected to the compressor and the expansion valve, and an indoor unit module and an outdoor unit module having indoor and outdoor blowers,

The indoor blower blows the indoor air sequentially through the brine type heat exchanger and the refrigerant type heat exchanger and blows it to the communication equipment, and the outdoor blower blows the outdoor air sequentially through the brine type heat exchanger and the refrigerant type heat exchanger. Characterized in that.

And, the indoor unit module,

Among the refrigerant type heat exchanger and the brine type heat exchanger facing each other, the refrigerant type heat exchanger is disposed closer to the blower than the brine type heat exchanger, and the indoor blower is spaced at one side of the brine type heat exchanger and the refrigerant type heat exchanger. The air is blown to communication equipment by sequentially passing indoor air through a brine type heat exchanger and a refrigerant type heat exchanger.

In addition, the outdoor unit module,

The refrigerant type heat exchanger and the brine type heat exchanger disposed to face each other are arranged in pairs so as to face inwardly at intervals, and the outdoor blowers are disposed in the middle of the pair of heat exchangers so that the outdoor air is connected to the brine type heat exchanger. It is characterized in that the air flow to the outside by sequentially passing through the refrigerant heat exchanger.

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

1 is a block diagram showing a double heat exchange structure of the cooling device for communication equipment according to the present invention, Figure 2 is a perspective view showing a double heat exchange structure of the indoor unit module of the cooling device for communication equipment according to the present invention, Figure 3 A perspective view showing a double heat exchange structure of an outdoor unit module of a cooling device for communication equipment according to the present invention.

As shown in Figures 1 to 3, the dual heat exchange structure of the cooling device for communication equipment of the present invention is disposed in the indoor unit module 100 and the outdoor space of the base station 300 is disposed in the indoor space of the base station 300. It consists of the outdoor unit module 200.

The indoor unit module 100 includes a brine type first indoor heat exchanger 110, a pair of expansion valves 130, a pair of compressors 160, a refrigerant type second indoor heat exchanger 150, and an indoor blower ( 170).

The brine type first indoor heat exchanger 110 is installed on the brine pipe 120, and a heat exchange tube 111 provided therein is connected to the brine pipe 120.

The expansion valve 130 is installed in pairs on different refrigerant pipes 140 and rapidly converts the high pressure liquid refrigerant supplied from the refrigerant pipe 140 into a low temperature, low pressure fog state refrigerant.

The second indoor heat exchanger 150 of the refrigerant type is provided with a pair of heat exchange tubes 151 therein, and a refrigerant pipe 140 extending from the expansion valve 130 is connected to each other.

The second indoor heat exchanger 150 of the refrigerant system evaporates a low-pressure sprayed refrigerant as an evaporator by heat exchange with the bet, and cools the bet by the heat of evaporation of the refrigerant generated at this time.

The compressor 160 is individually connected to the refrigerant pipes 140 respectively extending from the second indoor heat exchanger 150 to compress the refrigerant passing through the second indoor heat exchanger 150, and the vaporized refrigerant It is a conventional compressor that compresses.

The indoor blower 170 is disposed on the heat transfer surface in which the heat exchange is performed in the first and second indoor heat exchangers 110 and 150 so as to communicate the cold air formed by the heat exchange action of the first and second indoor heat exchangers 110 and 150. Allow air to be blown to the equipment 400.

In addition, the indoor blower 170 serves to increase the contact and heat exchange efficiency of the first and second indoor heat exchangers (110,150) and the indoor air.

Here, in particular, the brine-type first indoor heat exchanger 110 and the refrigerant-type second indoor heat exchanger 150 are disposed to face each other, and the refrigerant-type second indoor heat exchanger 150 is the brine-type first indoor heat exchanger. The heat exchanger 110 is disposed closer to the blower port V (the upper cover of the indoor blower 170, for example in FIG. 2) through which the indoor air is discharged.

In addition, the indoor blower 170 may be selectively disposed at intervals on one side of the brine type first indoor heat exchanger 110 and the refrigerant type second heat exchanger 150 (in FIG. 2, for example, the second indoor heat exchanger). (Upper right side of 150), and when the indoor blower 170 is operated, the indoor air is sucked from the side (left in FIG. 2) and discharged to the upper blower opening V, whereby the indoor air is the first indoor heat exchanger 110. ) And the second indoor heat exchanger 150 in order to be blown to the communication equipment 400.

This is to gradually cool the indoor air by first passing the indoor air through the first indoor heat exchanger 110, which is relatively hotter than the second indoor heat exchanger 150, and the indoor air is colder than the first indoor heat exchanger 110. By passing through the second indoor heat exchanger 150 first, the cooling efficiency is prevented from being lowered.

Meanwhile, as another embodiment of the present invention, the indoor air is sequentially blown through the first indoor heat exchanger 110 of the brine method and the second indoor heat exchanger 150 of the refrigerant method to be blown to the communication equipment 400. If only a number, the positions of the first and second indoor heat exchanger (110,150) and the vent (V) may be arbitrarily changed, or the suction and discharge directions of the indoor blower (170) may be reversely designed.

The outdoor unit module 200 includes a brine type first outdoor heat exchanger 210, a brine pump 220, a brine type second outdoor heat exchanger 230, a refrigerant type third outdoor heat exchanger 240, and a refrigerant type. The fourth outdoor heat exchanger 250 and the outdoor blower 260 and the like.

The brine type first outdoor heat exchanger 210 has a heat exchange tube 211 therein, and a brine pipe 120 extending from the brine pump 220 is connected to the heat exchange tube 211. .

The brine type second outdoor heat exchanger 230 is provided with a heat exchange tube 231 therein, and a brine pipe extending from the brine type first outdoor heat exchanger 210 in the heat exchange tube 231. 120 is connected, and the brine pipe 120 extending from the second outdoor heat exchanger 230 is connected to the heat exchange tube 111 of the first indoor heat exchanger 110.

That is, the first and second outdoor heat exchangers 210 and 230 are serially connected to the first indoor heat exchanger 110 sequentially on each other on the brine pipe 120 extending from the brine pump 220.

The third outdoor heat exchanger 240 of the refrigerant type includes a heat exchange tube 241 therein, and a compressor 160 connected to each other among the compressor 160 and the expansion valve 130 of the indoor unit module 100. The refrigerant pipes 140 extending from the expansion valve 130 are connected to each other.

The fourth outdoor heat exchanger 250 of the refrigerant type includes a heat exchange tube 251 therein, and includes a compressor 160 and an expansion valve 130 connected to the third outdoor heat exchanger 240 of the refrigerant type. Refrigerant pipes 140 extending from the compressor 160 and the expansion valve 130 are connected to each other except for the connection.

The third and fourth outdoor heat exchangers 240 and 250 are condensers, and are a type of heat exchangers that condense and liquefy high-pressure refrigerant supplied from the compressor 160.

The brine pump 220 is installed on the brine pipe 120 extending from the first indoor heat exchanger 110 of the indoor unit module 100.

Although the brine pump 220 is configured as one in the figure, in one embodiment by connecting a pair of brine pump 220 in parallel with the brine pipe 120, even if a failure occurs in any one of the brine pump 220 of the other side By operating the brine pump 220 it is possible to stably maintain the cooling of the communication equipment 400 in the base station (300).

The outdoor blower 260 is disposed close to the heat transfer surface at which the heat exchange of the first to fourth outdoor heat exchangers 210, 230, 240, and 250 occurs, thereby increasing the contact and heat exchange efficiency of the first to fourth outdoor heat exchangers 210, 230, 240, and 250 with the external air. In addition, it is preferable to constitute a plurality of the first to fourth outdoor heat exchanger (210, 230, 240, 250).

Here, in one embodiment of the present invention, in particular, the third and fourth outdoor heat exchangers 240 and 250 of the refrigerant type are disposed in pairs so as to face toward the inside (inner direction) of the outdoor unit module 200 at intervals from each other. The brine-type first and second outdoor heat exchangers 210 and 230 are outside of the refrigerant-type third and fourth outdoor heat exchangers 240 and 250 (outward direction of the outdoor air module 200, that is, of the outdoor unit module 200). The outdoor air inlet side) is disposed to face the third and fourth outdoor heat exchangers 240 and 250, respectively.

The outdoor blower 260 is disposed in the middle of the refrigerant type third and fourth outdoor heat exchangers 240 and 250 (the upper part of the center of the outdoor unit module 200 in FIG. 3), and when the outdoor blower 260 operates, The outdoor air is sucked from the outdoor air inlet (left and right of the heat exchangers 210 and 230 in FIG. 3) of the outdoor air module 200 and discharged back to the upper air vent V, whereby the outdoor air is first and second outdoor. After passing through the heat exchangers 210 and 230 and the third and fourth outdoor heat exchangers 240 and 250 sequentially, the air is blown out again.

 This is to pass outdoor air first to the first and second outdoor heat exchangers 210 and 230, which are relatively lower than the third and fourth outdoor heat exchangers 240 and 250, and the outdoor air is the first and second outdoor heat exchangers. By passing through the third and fourth outdoor heat exchangers 240 and 250, which are higher than the temperature of 210 and 230, the heat exchange efficiency of the first and second outdoor heat exchangers 210 and 230 is lowered.

Meanwhile, as another embodiment of the present invention, the outdoor air sequentially passes through the first and second outdoor heat exchangers 210 and 230 of the brine method and the third and fourth outdoor heat exchangers 240 and 250 of the refrigerant method, and then to the outside. As long as it can be blown, the positions of the first and second outdoor heat exchangers 210 and 230 and the third and fourth outdoor heat exchangers 240 and 250 are changed to each other, or accordingly, the suction and discharge directions of the outdoor blower 260 are reversely designed. You can do it.

In addition, in the present invention, the indoor temperature sensor 180 is installed in the room of the base station 300 in order to effectively control the cooling operation, and the outdoor temperature sensor 270 is installed in the outdoor of the base station 300.

Then, a brine temperature sensor 280 is installed on a portion where the brine pipe 120 passes through the first indoor heat exchanger 110 and enters the outdoor unit module 200.

The indoor temperature sensor 180, the outdoor temperature sensor 270 and the brine temperature sensor 280 detects and compares the temperature, thereby the first indoor heat exchanger and the first and second outdoor heat exchangers (110, 210, 230), The inside of the base station 300 is cooled by selectively driving the second indoor heat exchanger and the third and fourth outdoor heat exchangers 150, 240, and 250.

Figure 4 is a flow chart illustrating a control method of the double heat exchange structure of the cooling device for communication equipment of the present invention.

First, the indoor temperature (T _in ), outdoor temperature (T _out ), and brine temperature of the object such as the base station 300 by the indoor temperature sensor 180, the outdoor temperature sensor 270, and the brine temperature sensor 280. (T _b ) is measured (S110). First stage.

The indoor temperature T _in is measured in comparison with the first set value T _s1 (S120), and if the room temperature T _in is lower than the first set value T _s1 (for example, 25 ° C.) To stop the operation (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 ), the first indoor heat exchanger (110) and the first And operating the second outdoor heat exchanger (210, 230) (S150), and if the outdoor temperature (T _out ) is greater than the brine temperature (T _b ), the first indoor heat exchanger (110) and the first and second outdoor heat exchanger ( The operation of the 210 and 230 is stopped (S160). -Third step.

The third step is to stop the operation of the first indoor heat exchanger 110 and the first and second outdoor heat exchangers (210,230) in the hot summer season when the outdoor temperature (T _out ) is more than the brine temperature (T _b ), In order to operate the first indoor, outdoor and second outdoor heat exchangers 110, 210 and 230 using outdoor air in the spring, autumn and winter when the temperature T _out is lower than the brine temperature T _b .

Next, comparing the indoor temperature T _in with the second set value T _s2 (for example, 26.5 ° C.) (S170), if the second temperature is higher than the second set value T _s2 , the second indoor and third outdoor heat exchangers 150 and 240 ) And the second indoor and third outdoor heat exchangers 150 and 240 are stopped when the indoor temperature T _in is less than the second set value T _s2 (S190). 4th step.

In addition, the indoor temperature T _in is compared with the third set value T _s3 (for example, 27.5 ° C.) (S200), and when the third set value T _s3 is higher than the fourth outdoor heat exchanger 250 is operated ( S210), if the indoor temperature T _in is less than or equal to the third set value T _s3 , the operation of the fourth outdoor heat exchanger 250 is stopped (S220). 5th step.

In the fourth and fifth steps, when the first indoor heat exchanger 110 and the first and second outdoor heat exchangers 210 and 230 are not sufficiently cooled, the second indoor and the third indoor heat exchangers are not sufficient. In addition to assisting the outdoor heat exchanger (150,240), the operation of the first indoor heat exchanger 110, the first and second outdoor heat exchanger (210,230), the second indoor and third outdoor heat exchanger (150, 240) alone If the cooling of the communication equipment 400 is not sufficient to operate the fourth outdoor heat exchanger (250) to maintain the overall heat exchange efficiency at a constant level.

The indoor blower 170 is turned on / off at the same time according to whether the first and second indoor heat exchangers 110 and 230 are operated (or power on / off of the entire cooling device) to blow the 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 changes will be possible depending on the various communication equipment installed.

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 allowing the first and second indoor and first to fourth outdoor heat exchangers 110, 150, 210, 230, 240, 250 to In response to the operation of the) to be able to respond in real time to the room temperature of the base station 300.

As described above, the present invention basically adopts a method of maximizing outdoor air to cool the communication equipment in the base station, and in addition, the double indoor and outdoor heat exchangers 110, 150, 210, 230, 240, and 250 are arranged to maximize heat exchange efficiency. By doing so, not only the temperature change of the communication device 400 'can be closely coped with, but also the heat exchangers can complement each other to maintain a stable cooling state at all times.

The dual heat exchange structure of the cooling device for a communication device of the present invention configured as described above adopts a refrigerant circulation structure and a heat exchange structure using a dual cooling line, and arranges and operates a heat exchanger and a blower to optimize heat exchange efficiency, thereby reducing the size of the indoor unit and the outdoor unit. While reducing noise and noise, it utilizes the cool air in the natural state according to the outside temperature to minimize the waste of power and has the useful effect of securing 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 to the accompanying drawings. Belong to the claims.

Claims (3)

The heat exchanger is provided with a heat exchange tube inside and is installed on the brine pipe and connected to the brine pump, and the heat exchanger is provided with a heat exchange tube inside and installed on the refrigerant pipe and connected to the compressor and the expansion valve. In the heat exchange structure of the cooling device for communication equipment comprising a tile, an indoor unit module equipped with indoor and outdoor blowers and an outdoor unit module, The indoor blower blows the indoor air sequentially through the brine type heat exchanger and the refrigerant type heat exchanger and blows it to the communication equipment, and the outdoor blower blows the outdoor air sequentially through the brine type heat exchanger and the refrigerant type heat exchanger. Dual heat exchange structure of a cooling device for communication equipment, characterized in that. The method of claim 1, The indoor unit module, Among the refrigerant type heat exchanger and the brine type heat exchanger facing each other, the refrigerant type heat exchanger is disposed closer to the blower than the brine type heat exchanger, and the indoor blower is spaced at one side of the brine type heat exchanger and the refrigerant type heat exchanger. The double heat exchange structure of the cooling device for communication equipment, characterized in that the air flow to the communication equipment by sequentially passing through the indoor air to the brine type heat exchanger and the refrigerant type heat exchanger disposed. The method according to claim 1 or 2, The outdoor unit module, The refrigerant type heat exchanger and the brine type heat exchanger disposed to face each other are arranged in pairs so as to face inwardly at intervals, and the outdoor blowers are disposed in the middle of the pair of heat exchangers so that the outdoor air is connected to the brine type heat exchanger. A dual heat exchange structure of a cooling device for communication equipment, characterized in that the air flow to the outside by sequentially passing through the refrigerant heat exchanger.

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