CN113340012A - Refrigerating system for base station - Google Patents

Refrigerating system for base station Download PDF

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Publication number
CN113340012A
CN113340012A CN202110688201.5A CN202110688201A CN113340012A CN 113340012 A CN113340012 A CN 113340012A CN 202110688201 A CN202110688201 A CN 202110688201A CN 113340012 A CN113340012 A CN 113340012A
Authority
CN
China
Prior art keywords
cabinet
temperature
refrigerant
base station
condenser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110688201.5A
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Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaoyang Advanced Manufacturing Technology Research Institute Co ltd
Original Assignee
Shaoyang Advanced Manufacturing Technology Research Institute Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaoyang Advanced Manufacturing Technology Research Institute Co ltd filed Critical Shaoyang Advanced Manufacturing Technology Research Institute Co ltd
Priority to CN202110688201.5A priority Critical patent/CN113340012A/en
Publication of CN113340012A publication Critical patent/CN113340012A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00Compression machines, plants or systems with non-reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006Accumulators
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20709Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
    • H05K7/208Liquid cooling with phase change
    • H05K7/20827Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices

Abstract

The invention discloses a refrigeration system for a base station in the technical field of refrigeration systems, which comprises a compressor, a condenser electronic fan, a liquid storage device, a plurality of EXVs, a plurality of thermostatic expansion valves, an evaporator, a pressure/temperature sensor and a pipeline, wherein the compressor provides power for compressing a refrigerant for the refrigeration system, and the condenser fan are used for exchanging heat between the refrigerant and air to reduce the temperature of the refrigerant. According to signals such as the environment temperature and the air temperature in the cabinet, the fan is automatically adjusted to match the heat dissipation capacity required by each cabinet, and the independent and accurate control of the temperature of each cabinet can be realized. And when the air temperature in the cabinet is further reduced, the refrigeration system can be automatically closed, and energy is saved.

Description

Refrigerating system for base station
Technical Field
The invention relates to the technical field of refrigeration systems, in particular to a refrigeration system for a base station.
Background
Nowadays, networks are deeply involved in the aspects of human life, and people have higher and higher requirements on network speed, delay and the like. The 5G network is inevitably and vigorously developed and popularized in the coming years so as to meet the requirements of people on work and life.
To achieve the same coverage of a 5G network as an existing 4G network, at least 3 times more 5G base stations are required than 4G base stations. Moreover, the power consumption of a single set of 5G base station equipment is currently about 4 times that of 4G base station equipment. The comprehensive calculation shows that the power consumption of the 5G base station is at least 10 times of that of the 4G base station. Calculated according to the energy consumption of the 4G base station of 1.5kW at present, the energy consumption of the 5G base station can reach more than 15 kW. If calculated according to the heat dissipation capacity of 15%, the 5G base station has at least 2.25kW of heat dissipation requirement.
Compared with the prior heat dissipation mode of the 4G base station, the heat dissipation requirements of the 5G base station are difficult to meet by the modes of pure air cooling, passive liquid cooling and the like. The base station is cooled by directly using equipment such as a household air conditioner and the like, and the base station is not economical and energy-saving.
The technical solutions for solving the problem of heat dissipation and cooling of the base station at present include the following: firstly, directly air-cooling and radiating. And secondly, passive liquid cooling and air cooling heat dissipation. And thirdly, actively refrigerating by the integrated machine. Fourthly, household split machine.
The technical solution in the prior art has the following disadvantages:
the direct air cooling heat dissipation mainly depends on the fan to exchange the hot air in the machine room/base station with the external cooling so as to achieve the purpose of heat dissipation and cooling. Obviously, the method is limited by the ambient temperature, and in high-temperature weather, when heat dissipation is needed most, the heat dissipation efficiency is the lowest, or even normal heat dissipation cannot be realized.
Passive liquid cooling mainly uses devices such as heat pipes and the like to transfer heat of main heating components/equipment to liquid, and the liquid transfers the heat to an external radiator which radiates the heat through a fan. Although the heat in the machine room/base station is transferred to the outside by using liquid, the heat is finally dissipated by using air cooling, and the final heat dissipation capacity is also influenced by the air cooling and is greatly limited in high-temperature weather.
The all-in-one machine is used for active refrigeration, is similar to the early window machine of a household air conditioner, and is characterized in that although a compression refrigeration technology is used, an evaporator and a condenser are arranged relatively close to each other, so that the installation of the whole machine set in a machine room/base station is limited, and meanwhile, cold water is easily generated on the inner side of the machine room.
The household split air conditioner is limited by the space size of a machine room/base station, the household split air conditioner is not convenient to install, and the household air conditioner is not designed for the machine room/base station, so that the running energy consumption of the air conditioner is higher
To solve the above problem, we propose a refrigeration system for a base station.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to solve the technical problem, the present invention provides a refrigeration system for a base station, and the following technical solutions are provided:
the invention provides a refrigeration system for a base station, which comprises a compressor, a condenser electronic fan, a liquid storage device, a plurality of EXVs, a plurality of thermal expansion valves, an evaporator, a pressure/temperature sensor and a pipeline, wherein the compressor provides power for compressing a refrigerant for the refrigeration system, the condenser and the condenser fan are used for exchanging heat between the refrigerant and air to reduce the temperature of the refrigerant, the liquid storage device is used for storing surplus refrigerant, the EXVs and the electronic expansion valves are used for throttling and depressurizing the refrigerant, the evaporator is used for exchanging heat between the refrigerant and cooling liquid to reduce the temperature of the cooling liquid, and the pressure/temperature sensor is arranged in an air suction port of the evaporator and the compressor, an exhaust port of the compressor and a cabinet and is used for controlling the operation of the temperature of the whole refrigeration system.
Preferably, the air conditioner further comprises a servo motor, wherein the servo motor is arranged on the condenser and is used for adjusting the air intake of the condenser.
Preferably, the intelligent air conditioner further comprises a plurality of electronic fans installed in the cabinet, wherein the electronic fans are intelligently adjusted according to the temperature of air in the cabinet, the air volume is reduced when the temperature of the cabinet is close to a target value, and the electronic fans are temporarily stopped when the temperature of the cabinet is far lower than the target value so as to reduce energy consumption.
Preferably, the system also comprises a 4G module, wherein the 4G module is used for exposing relevant data in the pressure/temperature sensor to a CAN network, realizing data remote transmission through the 4G module, carrying out real-time remote monitoring and analysis on each air conditioner installed on the base station cabinet by combining a rear-end big data system, carrying out optimization of different units in different degrees from control software through data analysis of the running state of each unit, and further reducing comprehensive energy consumption on the premise of meeting performance requirements.
Compared with the prior art, the invention has the beneficial effects that: according to signals such as the environment temperature and the air temperature in the cabinet, the fan is automatically adjusted to match the heat dissipation capacity required by each cabinet, and the independent and accurate control of the temperature of each cabinet can be realized. And when the air temperature in the cabinet is further reduced, the refrigeration system can be automatically closed, and energy is saved.
According to the invention, different amounts of EXV are proportioned according to different numbers of cabinets. According to signals such as the suction pressure/temperature of the compressor, the outlet temperature of the evaporator, the air temperature in the cabinet and the like, the EXV can be automatically adjusted, the refrigerant flow of each cabinet refrigerant flow path is distributed, and the stable control of the temperature of each cabinet can be realized.
The active air inlet damper is used, so that stable refrigeration can be realized at lower ambient temperature, and the air temperature in the cabinet is ensured to be controlled stably within a larger ambient temperature range.
The comprehensive energy consumption and the control precision/stability of the air conditioning unit can be obviously saved by the three points.
In addition, the branches of each cabinet are mutually independent in structure and control, so that high-freedom combination of multiple cabinets such as a single cabinet, a double cabinet, a triple cabinet and the like can be realized, and the multifunctional combined cabinet is convenient to use in various actual engineering states.
The reserved data remote transmission function of the invention can further realize the rapid iterative update of software and further reduce the comprehensive energy consumption.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a refrigeration system for a base station according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Examples
As shown in fig. 1, the system component of the present invention is composed of a compressor, a condenser electronic fan, a condenser air inlet servo motor, a reservoir, an EXV, a thermostatic expansion valve, an evaporator electronic fan and related sensors, pipelines and structural components.
The compressor provides power for the refrigeration system to compress the refrigerant; the condenser and the condenser fan can enable the refrigerant to exchange heat with air, so that the temperature of the refrigerant is reduced; the liquid storage device is used for storing surplus refrigerant; the EXV and the electronic expansion valve are used for throttling and depressurizing the refrigerant; the evaporator can exchange heat between the refrigerant and the cooling liquid, so that the temperature of the cooling liquid is reduced. The evaporator and compressor suction port pressure/temperature sensor, the compressor exhaust port pressure/temperature sensor, the cabinet air temperature sensor, the environment temperature sensor and the like are used for controlling the operation of the whole refrigerating system.
According to the number of the cabinets and the actual refrigeration requirement of the cabinets, the EXV or the thermal expansion valve can be selected on different branches. Corresponding to the system diagram of the figure, the whole refrigeration system can be subdivided into 4 different systems: 3 thermostatic expansion valves, 1 EXV +2 thermostatic expansion valves, 2 EXV +1 thermostatic expansion valves, 3 EXVs are used.
When 3 thermostatic expansion valves are used, the model of the thermostatic expansion valve equipped for each cabinet is obtained by the model selection design according to the equipment of each cabinet and the calculated maximum heat dissipation capacity.
When 1 EXV +2 thermostatic expansion valves are used, the branch of the cabinet with the highest control requirement uses the EXV. The EXV automatically adjusts the opening according to the air temperature in the cabinet and the temperature/pressure of the refrigerant at the outlet of the evaporator, and accurately controls the refrigerant flow required by the heat dissipation of the cabinet. When the cabinet does not need refrigeration or other cabinets need rapid cooling, the cabinet where the EXV is located can be temporarily closed or the flow of the branch refrigerant at the EXV is reduced, so that the dynamic distribution of the flow and the rapid adjustment of the air temperature in each cabinet are realized.
When 2 EXV +1 thermostatic expansion valves are used, the thermostatic expansion valve is used for the branch where the cabinet with the lowest control requirement is located. As described above, when 2 EXVs are used, the intelligent distribution of refrigerant flow to the entire refrigeration system can be further enhanced.
When 3 EXVs are used, the refrigerant flow of the entire refrigeration system can be completely freely distributed, so that the control of the air temperature in the cabinet is more rapid and accurate.
Therefore, different amounts of EXVs can be selected according to actual needs, different control precision requirements are met, and unit cost is balanced.
Whether any of the above systems is used, the electronic fans in the cabinet are independently controlled. The electronic fan in each cabinet is intelligently adjusted according to the air temperature in the cabinet, and the air volume is reduced when the cabinet temperature is close to a target value; when the cabinet temperature is far below the target value, the electronic fan can be stopped briefly to reduce energy consumption.
In this embodiment, when ambient temperature is too low, if the rack has the refrigeration demand, can adjust servo motor to adjust the intake of condenser, make whole refrigerating system's the operation at low temperature more stable. On the other hand, the present invention can accommodate a wider operating temperature range than other refrigeration systems.
It should be particularly noted that, in the system of this embodiment, a 4G module is reserved. The related data of the sensor and the actuator CAN be selectively exposed in the CAN network, and meanwhile, the remote data transmission is realized through the 4G module. And by combining a rear-end big data system, each air conditioner installed on the base station cabinet can be remotely monitored and analyzed in real time. Through the data analysis of the running state of each unit, different units can be optimized to different degrees from the control software, and the comprehensive energy consumption is further reduced on the premise of meeting the performance requirement.
According to the embodiment, the fans are automatically adjusted to match the heat dissipation capacity required by each cabinet according to signals such as the ambient temperature and the air temperature in the cabinet, and the independent accurate control of the temperature of each cabinet can be realized. And when the air temperature in the cabinet is further reduced, the refrigeration system can be automatically closed, and energy is saved.
According to the embodiment, different amounts of EXV are proportioned according to different numbers of cabinets. According to signals such as the suction pressure/temperature of the compressor, the outlet temperature of the evaporator, the air temperature in the cabinet and the like, the EXV can be automatically adjusted, the refrigerant flow of each cabinet refrigerant flow path is distributed, and the stable control of the temperature of each cabinet can be realized.
The embodiment uses the active air inlet damper, and can realize stable refrigeration at lower ambient temperature, thereby ensuring that the air temperature in the cabinet is stably controlled within a larger ambient temperature range.
The comprehensive energy consumption and the control precision/stability of the air conditioning unit can be obviously saved by the three points.
In addition, the branches of each cabinet are structurally and controllably independent from each other, so that high-freedom combination of multiple cabinets such as a single cabinet, a double cabinet, a triple cabinet and the like can be realized, and the multifunctional combined cabinet is convenient for being applied to various actual engineering states.
The reserved data remote transmission function of the embodiment can further realize the rapid iterative update of software, and further reduce the comprehensive energy consumption.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a refrigerating system for basic station, which characterized in that, including the compressor, the condenser, condenser electronic fan, the reservoir, a plurality of EXV, a plurality of thermal expansion valve, the evaporimeter, pressure \ temperature sensor, the pipeline, the compressor provides compressed refrigerant for refrigerating system provides power, condenser and condenser fan are used for making refrigerant and air heat transfer, make the refrigerant temperature reduce, the reservoir is used for storing surplus refrigerant, EXV, electronic expansion valve is used for reducing the refrigerant throttle, the evaporimeter is used for making refrigerant and coolant liquid heat transfer, make the coolant liquid temperature reduce, pressure \ temperature sensor settle in evaporimeter and compressor induction port, compressor gas vent, rack, and be used for the operation control of whole refrigerating system temperature.
2. The refrigeration system for a base station of claim 1, further comprising a servo motor disposed on the condenser and adapted to adjust an intake air amount of the condenser.
3. A refrigeration system for a base station as recited in claim 1 further comprising a plurality of electronic fans mounted in the cabinet, said electronic fans being intelligently adjustable based on the temperature of the air in the cabinet to reduce the amount of air when the cabinet temperature is near a target value and to briefly stop the electronic fans to reduce energy consumption when the cabinet temperature is far below the target value.
4. The refrigeration system for the base station as claimed in claim 1, further comprising a 4G module, wherein the 4G module is used to expose the relevant data in the pressure/temperature sensor to a CAN network, and meanwhile, the 4G module is used to realize remote data transmission, and in combination with a rear-end big data system, real-time remote monitoring and analysis are performed on each air conditioner installed on the base station cabinet, and different units are optimized in different degrees from control software through data analysis of the operating state of each unit, so that the comprehensive energy consumption is further reduced on the premise of meeting the performance requirement.
CN202110688201.5A 2021-06-21 2021-06-21 Refrigerating system for base station Pending CN113340012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110688201.5A CN113340012A (en) 2021-06-21 2021-06-21 Refrigerating system for base station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110688201.5A CN113340012A (en) 2021-06-21 2021-06-21 Refrigerating system for base station

Publications (1)

Publication Number Publication Date
CN113340012A true CN113340012A (en) 2021-09-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110688201.5A Pending CN113340012A (en) 2021-06-21 2021-06-21 Refrigerating system for base station

Country Status (1)

Country Link
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487640A (en) * 2009-02-16 2009-07-22 浙江大学 Distributed cooling system for mobile communication base station equipment
CN103925752A (en) * 2013-01-10 2014-07-16 海瑞弗机房设备(北京)有限公司 Refrigeration device and refrigeration method
CN104061707A (en) * 2014-06-26 2014-09-24 浙江瑞能通信科技股份有限公司 Intelligent multi-source refrigerating system and intelligent multi-source refrigeration control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101487640A (en) * 2009-02-16 2009-07-22 浙江大学 Distributed cooling system for mobile communication base station equipment
CN103925752A (en) * 2013-01-10 2014-07-16 海瑞弗机房设备(北京)有限公司 Refrigeration device and refrigeration method
CN104061707A (en) * 2014-06-26 2014-09-24 浙江瑞能通信科技股份有限公司 Intelligent multi-source refrigerating system and intelligent multi-source refrigeration control method

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