CN111818769A - A 5G base station temperature control cabinet integration device and control method - Google Patents

Abstract

A5G base station temperature control cabinet-machine integrated device and a control method comprise a cabinet body, base station equipment, a temperature control system and a control system, wherein the temperature control system comprises an indoor part and an outdoor part, the indoor part and the base station equipment are respectively arranged on two sides in the cabinet body, the indoor part comprises an evaporator and an indoor fan, the outdoor part comprises a condenser, a compressor and an outdoor fan, the control system is connected with a temperature sensor, and the work of the temperature control system is controlled according to the result of the temperature sensor. The base station and the temperature control system are integrally designed, so that the cabinet space is more compact, and the cabinet space utilization is maximized; the cold channel is designed to directly surround the equipment in the cabinet body, is closer to the heat source, reduces the loss of cold energy, and is assembled by detachable clapboards on the side wall of the cabinet body, so that the cabinet body is convenient to expand; and in order to ensure the safe and stable operation of equipment in the cabinet body, the fan adopts a modularized fan assembly structure, so that the fan does not need to be powered off when being replaced, and the maintenance time is reduced.

Description

A 5G base station temperature control cabinet integration device and control method

technical field

The invention relates to the technical field of refrigeration, in particular to a 5G base station temperature control cabinet integration device and a control method.

Background technique

At present, China's network is undergoing a transition from 4G to 5G. 5G base stations are the core equipment of 5G networks, providing wireless coverage and realizing wireless signal transmission between wired communication networks and wireless terminals. The architecture and form of base stations directly affect how 5G networks are deployed. Unlike 4G base stations, in the 5G era, in order to meet the three requirements of enhanced mobile broadband (EMBB), large-scale Internet of things (MMTC) and low-latency and highly reliable Internet of things (URLLC), And to improve resource utilization, the structure of 5G base stations has changed to some extent. In technical standards, the frequency band of 5G is much higher than that of 2G, 3G and 4G networks. 5G network mainly works in the 3000-5000MHz frequency band at this stage. Because the higher the frequency, the greater the attenuation of the signal propagation process. Obviously, 5G network The density of base stations will be higher, and the calorific value of 5G base stations will be more than that of 4G base stations. According to research, the calorific value of 5G base stations will be more than 4 times that of 4G base stations. At present, the heating module of traditional 4G base stations is RRU+AAU, Generally, temperature control solutions such as rack air conditioners are used to control the temperature of the base station. However, these solutions have the disadvantages of high cooling loss, large installation area, and do not have the functions of parallel machines. These temperature control solutions cannot be completely To meet the needs of 5G base station work, it is necessary to design a temperature control scheme that is more suitable for 5G base stations to solve the problem of temperature control of 5G base stations.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above shortcomings of the prior art and provide a 5G base station temperature control cabinet integration device and control method, which realizes the integration of base station equipment and temperature control system, makes the cabinet space more compact, and saves the occupied space. , and easy to expand, simple construction and maintenance.

The technical scheme of the present invention is: a 5G base station temperature control cabinet integration device, including a cabinet body, base station equipment and a temperature control system, the temperature control system includes an indoor part and an outdoor part, and the indoor part and the base station equipment are respectively placed in the cabinet. On both sides, the indoor part includes the evaporator and the indoor fan, the outdoor part includes the condenser, the compressor and the outdoor fan, and the indoor part and the outdoor part are connected by flexible hoses.

Further, the base station equipment is mainly a baseband processing unit, that is, a Building Baseband Unit (BBU).

Further, there is a partition between the indoor part and the base station equipment, and both ends of the partition plate have a certain gap with the cabinet wall, so that when the indoor fan is working, the cold air from the evaporator flows from the gap at one end of the partition plate to the side of the base station equipment. , take away the heat emitted by the base station equipment, and then return to the evaporator from the gap at the other end of the partition, that is, a cold aisle for cold air circulation is formed in the cabinet.

Further, the side wall of the cabinet is composed of a plurality of partitions, and the partitions are detachably connected to the cabinet to facilitate the combination of multiple cabinets. When combining, just remove the partitions on the overlapping side walls of the adjacent two cabinets. After the cabinets are combined, multiple evaporators in the cabinet can share one condenser.

Further, the bottom of the cabinet is provided with a groove, which is convenient for the connection and installation of the evaporator and the flexible hose. The hose is arranged in the bottom groove to avoid contact with the outside world, which is safer and has a longer service life.

Further, the temperature control system is a heat pipe system or a traditional air conditioning system. Preferably, the temperature control system adopts a heat pipe system and a traditional air conditioning system at the same time, so that the advantages of the two refrigeration systems can be fully utilized.

Further, both the indoor fan and the outdoor fan adopt a modular design; hot-swap operation can be realized to reduce equipment maintenance time, and the indoor fan and the outdoor fan can adopt axial flow fan, centrifugal fan or perfusion fan.

Further, the evaporator and the condenser can be heat exchangers with a micro-channel structure or a copper tube and aluminum fin structure.

Further, the integrated device further includes a control system, the control system includes a temperature sensor and a controller, the temperature sensor is connected with the controller, and the temperature sensor is used to monitor the temperature inside and outside the cabinet in real time; the controller is connected with the temperature control system. , which can be used to control the working state of the temperature control system; for example, it can control the speed of the indoor fan. When the temperature sensor detects that the temperature in the cabinet increases, the speed of the indoor fan is increased, and when the temperature decreases, the speed of the fan is reduced.

The control method of the above-mentioned integrated device is that the controller controls the speed of the fan according to the temperature value outside the cabinet measured by the temperature sensor. When the measured temperature is high, the fan speed is increased; when the measured temperature is low. , reduce the fan speed; realize the intelligent control of the heat pipe and air conditioning system, and reduce the energy consumption of the fan; more specifically: when the temperature outside the cabinet measured by the temperature sensor is lower than T1, the natural cooling method is adopted, that is, only the heat pipe system is used. When the outdoor temperature is between T1 and T2, part of the natural cooling method is adopted, that is, the heat pipe system and the traditional air-conditioning system run at partial load; when the outdoor temperature is higher than T2, the traditional air-conditioning system runs at full load; traditional The load control of the air-conditioning system is realized by using the inverter control of the compressor. When the outdoor temperature exceeds T1, the compressor starts to run at a low rotation speed. When the temperature rises, the rotation speed of the fan is increased, and the operation of the compressor is gradually increased. The number of revolutions, when the temperature continues to rise beyond T2, the compressor starts to run at full load, preferably, the T1 is about 18°C, and the T2 is about 24°C.

Compared with the prior art, the present invention has the following characteristics: the present invention adopts the integrated design of the base station and the temperature control system to make the cabinet space more compact and maximize the utilization of the cabinet space; the cold aisle is directly designed to surround the equipment in the cabinet, which is closer to the cabinet The heat source can reduce the loss of cooling capacity. The side walls of the cabinet are assembled with detachable partitions, and the cabinet can be easily expanded. In order to ensure the safe and stable operation of the equipment in the cabinet, the fan adopts a modular fan assembly structure to achieve There is no need for power outages when the fan is replaced, reducing maintenance time.

Description of drawings

1 is a schematic structural diagram of Embodiment 1 of the present invention;

2 is a schematic structural diagram of Embodiment 2 of the present invention;

In the picture: 1-compressor, 2-air conditioner condenser, 3-outdoor fan, 4-expansion valve, 5-air conditioner evaporator, 6-indoor fan, 7-clapboard, 8-baseband processing unit, 9-cold aisle , 10-heat pipe evaporator, 11-heat pipe condenser.

Detailed ways

The detailed structure of the invention will be further described below with reference to the accompanying drawings and specific embodiments. Herein, the left side in FIG. 1 is the left side, the right side is the right side, the upper side is the rear, and the lower side is the front.

Example 1

As shown in FIG. 1 , this embodiment is a 5G base station temperature control cabinet integration device, including a cabinet body, base station equipment and a temperature control system. The cabinet body is in the shape of a box closed all around, and the temperature control system includes an indoor part The indoor part and the base station equipment are placed on both sides of the cabinet respectively. The indoor part includes the evaporator and the indoor fan 6, and the outdoor part includes the condenser 2, the expansion valve 4, the compressor 1 and the outdoor fan 3. This embodiment The temperature control system adopts heat pipe system and traditional air conditioning system at the same time, so the evaporator is divided into air conditioner evaporator 5 and heat pipe evaporator 10, condenser 2 is divided into air conditioner condenser 2 and heat pipe condenser 11, evaporator and condenser 2 connected by flexible hoses.

The base station equipment in this embodiment is mainly a baseband processing unit 8, namely the Building Baseband Unit (BBU); it is located on the left side of the cabinet cavity, the evaporator and the indoor fan 6 are located on the right side of the cabinet cavity, and the indoor fan 6 Located in front of the evaporator, a partition 7 is provided between the BBU, the evaporator and the indoor fan 6. Both ends of the partition 7 are not in contact with the side walls of the cabinet, leaving a gap at a certain distance. When the indoor fan 6 is working, it is The cold air flowing out of the evaporator will be driven by the fan to flow from the gap in front of the partition 7 to the side of the base station equipment, take away the heat emitted by the base station equipment, and then return to the evaporator from the gap at the other end of the partition 7, that is, in the cabinet. A cold aisle 9 in which the cold air runs clockwise is formed, and the cold aisle 9 is close to the base station equipment, effectively avoiding waste of cooling capacity.

There is a groove at the bottom of the cabinet for the connection and installation of the evaporator and the flexible hose. The hose is set in the groove at the bottom to avoid contact with the outside world, which is safer and has a longer service life.

In this embodiment, both the indoor fan 6 and the outdoor fan 3 adopt a modular design; hot swapping operations can be implemented to reduce equipment maintenance time. The indoor fan 6 and the outdoor fan 3 use axial flow fans, and both the evaporator and the condenser 2 use Heat exchanger with microchannel structure.

The integrated device of this embodiment further includes a control system, the control system includes a temperature sensor and a controller, the controller adopts PLC, the temperature sensor is connected with the controller, and the temperature sensor can monitor the temperature inside and outside the cabinet in real time; It is used to control the working state of the temperature control system; for example, the speed of the indoor fan 6 can be controlled. When the temperature sensor detects that the temperature in the cabinet rises, the speed of the indoor fan 6 is increased, and when the temperature drops, the fan speed is reduced. Speed, realize the intelligent regulation of heat pipe and air conditioning system, reduce the energy consumption of the fan;

The control method of the integrated device of this embodiment is that when the temperature outside the cabinet measured by the temperature sensor is lower than T1, the full natural cooling method is adopted, that is, only the heat pipe system is operated, and the traditional air conditioning system is shut down. When the outdoor temperature is between T1-T2 When the outdoor temperature is higher than T2, the traditional air-conditioning system operates at full load; the load control of the traditional air-conditioning system is realized by using compressor 1 inverter control. , when the outdoor temperature exceeds T1, the compressor 1 starts to run at a low speed of rotation. When the temperature rises, the speed of the fan is increased, and the speed of the compressor 1 is gradually increased. When the temperature continues to rise beyond T2 , the compressor 1 starts to run at full load, preferably, the T1 is 18°C, and the T2 is about 24°C.

Example 2

As shown in Figure 2, the difference between Embodiment 2 and Embodiment 1 is that Embodiment 2 is formed by combining two cabinets, and only the middle partition 7 is left on the side where the two cabinets overlap. And the indoor part shares a set of outdoor part. Those skilled in the art can clearly understand the technical solution of Embodiment 2 according to the textual description of Embodiment 1 and FIG. 2 , and thus will not be repeated in this embodiment.

Obviously, the above are only some embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have combinations and modifications of the aforementioned various technical features. Under the premise of departing from the spirit and scope of the present invention, improvements, modifications, and equivalent replacements of the present invention, or applying the structure or method of the present invention to other fields to achieve the same effect, all belong to the scope of protection included in the present invention.

Claims (10)

1. A 5G base station temperature control cabinet-machine integration device, comprising a cabinet, characterized in that it also includes base station equipment and a temperature control system, the temperature control system includes an indoor part and an outdoor part, and the indoor part and the base station equipment are placed in the cabinet respectively. On both sides of the body, the indoor part includes an evaporator and an indoor fan (6), the outdoor part includes a condenser, a compressor (1) and an outdoor fan (3), and the indoor part and the outdoor part are connected by flexible hoses. 2. The 5G base station temperature control cabinet integration device according to claim 1, wherein the base station equipment comprises a baseband processing unit (8). 3. The 5G base station temperature control cabinet integration device according to claim 2, characterized in that: a partition (7) is provided between the indoor part and the base station equipment, and both ends of the partition (7) are connected to the cabinet A certain gap is left in the body wall, so that when the indoor fan (6) is working, the cold air flowing out of the evaporator flows from the gap at one end of the partition plate (7) to the side of the base station equipment, taking away the heat emitted by the base station equipment, and then from the partition plate (7). 7) The gap at the other end returns to the evaporator, that is, a cold channel (9) for cold air circulation is formed in the cabinet. 4. The 5G base station temperature control cabinet integration device according to claim 3, characterized in that: the side wall of the cabinet is composed of a plurality of partitions (7), and the partitions (7) are detachably connected On the cabinet, it is convenient to combine multiple cabinets together. 5. The 5G base station temperature control cabinet-machine integration device according to claim 4, wherein a groove is provided at the bottom of the cabinet to facilitate the connection and installation of the evaporator and the flexible hose. 6. The 5G base station temperature control cabinet integration device according to claim 4, wherein the temperature control system is a heat pipe system or a traditional air conditioning system. 7. The 5G base station temperature control cabinet integration device according to claim 4, wherein the temperature control system adopts a heat pipe system and a traditional air conditioning system at the same time. 8. The 5G base station temperature control cabinet integration device according to claim 6, wherein the integrated device further comprises a control system, the control system comprises a temperature sensor and a controller, and the temperature sensor and the controller are in phase with each other. The temperature sensor is used to monitor the temperature inside and outside the cabinet in real time; the controller is connected with the temperature control system and used to control the working state of the temperature control system. 9. A 5G base station temperature control cabinet integration device according to claim 8, characterized in that: the indoor fan (6) and the outdoor fan (3) both adopt modular design; the indoor fan (6) and the The outdoor fan (3) adopts an axial flow fan, a centrifugal fan or a perfusion fan. 10. A control method for a 5G base station temperature control cabinet-machine integrated device according to claim 8, wherein: when the temperature outside the cabinet measured by the temperature sensor is lower than T1, a natural cooling method is adopted, that is, only a heat pipe is used. When the system is running, the traditional air-conditioning system is shut down. When the outdoor temperature is between T1 and T2, part of the natural cooling method is adopted, that is, the heat pipe system and the traditional air-conditioning system run at partial load; when the outdoor temperature is higher than T2, the traditional air-conditioning system runs at full load; The load control of the traditional air-conditioning system is realized by using the frequency conversion control of the compressor (1). When the outdoor temperature exceeds T1, the compressor (1) starts to run at a low rotation speed. When the temperature rises, the rotation speed of the fan is increased. At the same time, the running speed of the compressor (1) is gradually increased, and when the temperature continues to rise beyond T2, the compressor (1) starts to run at full load, and the T1 is less than T2.

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