CN212806127U - Cabinet cooling system using carbon dioxide as working medium - Google Patents

Abstract

The utility model relates to a use rack cooling system of carbon dioxide as working mediumThe system is characterized in that: comprising CO₂Refrigerating unit, CO₂Supply line, cabinet, CO₂Return line and CO₂A storage tank, the cabinet comprises a cabinet body and CO arranged on the cabinet body₂Import, CO₂Outlet, CO₂Heat exchange line and fan, the CO₂CO passing through refrigerating unit₂CO with supply line connected to the cabinet₂Inlet, the CO₂The inlet is connected to the CO₂At one end of the heat exchange line, the CO₂The other end of the heat exchange pipeline is connected to the CO₂Outlet, CO of the cabinet body₂Outlet through CO₂A return line is connected to the CO₂Storage tank of said CO₂Storage tank passing CO₂A return line is connected to the CO₂A refrigeration unit. The utility model has the advantages of being scientific and reasonable in structural design, possess the refrigeration function of putting out a fire, can realize high-efficient, the safe cooling of rack, guarantee the safety in utilization performance of rack.

Description

Cabinet cooling system using carbon dioxide as working medium

Technical Field

The utility model belongs to the technical field of refrigeration cooling, a rack cooling is related to, in particular to use rack cooling system of carbon dioxide as working medium.

Background

With the implementation of national big data strategy and internet + strategy, the national informatization level is continuously improved, and the new application of new services such as image recognition, big data display and the like brings about rapid increase of data services. The development of data centers as necessary infrastructure toward large-scale, high-density data centers has brought about two problems:

one is that as the performance of computers and servers increases, the devices become more and more powerful, resulting in more heat being generated by the computers and communication devices during operation. If the heat dissipation of the device is poor, the system may not operate stably, and even the system may be crashed. The machine room belongs to a dynamic intensive heat source, and the large-scale high-density arrangement can further increase the heat dissipation pressure, so that a refrigeration system is required to timely and effectively dissipate the generated heat, the refrigeration is efficient as much as possible, and the energy consumption is reduced.

Secondly, due to the dense arrangement of the cabinets, the fire prevention work of the cabinets is particularly important, once a fire disaster occurs, not only can hardware be damaged, but also the paralysis of the system and the loss of data and other serious consequences can be caused, so that the machine room also needs an efficient fire extinguishing mode with small loss.

The traditional data machine room cooling usually adopts machine room-level cooling, and some researchers adopt a heat pipe heat exchanger unit to keep the temperature, humidity and cleanliness of the whole machine room constant. The cooling form needs to consume a large amount of energy, so that the overall cooling efficiency of the machine room is low, and a local heat island phenomenon is easy to occur, thereby causing accidents.

In contrast, some researchers change the air supply mode of the air conditioner in the machine room, but the problem is not solved fundamentally. At present, a plurality of data machine rooms are used for directly cooling the cabinet, a cabinet type data center is used in a patent, or a plurality of refrigerating units are arranged at a terminal for respectively refrigerating so as to realize the regulation of refrigerating capacity, the refrigerating efficiency is improved, the safety of the operation of the data center is improved, and the refrigerating energy consumption is effectively reduced. However, in the above cabinet-level refrigeration form, the refrigerants used are usually R134a, R22, R410a or R407c, and many of these refrigerants have toxicity, which can cause casualties and damage to the ozone layer once leakage occurs, thus aggravating the greenhouse effect. And in addition, some cabinet-level cooling uses water as a circulating working medium, and once the water is leaked, a machine room is short-circuited, so that huge damage is caused.

In addition, the fire extinguishing mode of the data computer room is also very important, and along with the development of the data center towards the direction of high density and high operation speed, the arrangement of the machine cabinets is more and more intensive, so that the fire extinguishing work is difficult.

Firstly, the electronic equipment has high requirements on the fire extinguishing agent. If water is used as the fire extinguishing agent, the electronic equipment is short-circuited and damaged. Ammonium phosphate dry powder fire extinguishers, sodium bicarbonate dry powder fire extinguishers or carbon dioxide fire extinguishers are usually selected to extinguish fire in a data room, and residual powdered covering materials after the dry powder extinguishers extinguish fire have certain corrosion effect and dust pollution on electronic components and are difficult to clean. If a gas fire extinguishing system is adopted to extinguish fire in a data machine room, the fire extinguishing agent mainly used by the gas fire extinguishing system is difluoro-chloro-bromomethane, trifluorobromomethane or 1, 2-dibromotetrafluoroethane, the substances are insulating gas at normal temperature, when the substances are exposed to flame and heated at high temperature, the fire extinguishing agent can generate cracking reaction to generate free radicals with high reaction activity, and the free radicals can interrupt combustion chain reaction to achieve the purpose of extinguishing fire. However, these compounds are severely damaging to the ozone layer and are gradually being banned.

And secondly, the arrangement of the processors in the data center is dense, so that the spatial limitation is brought to the arrangement of fire extinguishing equipment and the action of fire extinguishing personnel. If the fire extinguisher is used for extinguishing fire by manual operation of personnel, because the fire extinguishing personnel cannot approach the fire ignition point due to the dense arrangement of the cabinets, even the dense arrangement of the cabinets can bring threat to the life safety of the fire extinguishing personnel. If a water mist fire extinguishing system or a gas fire extinguishing system is adopted, equipment such as a fire extinguishing device, a fire extinguishing agent pipeline and the like needs to be additionally arranged in the data center, a large amount of space is occupied, and the overall cost is very high.

Thirdly, the processor arranged in the data center is high in price, and once a fire breaks out, the fire is required to be quickly extinguished aiming at the fire breaking point, so that the fire is quickly and accurately extinguished, and the loss is reduced to the minimum. If the fire is artificially extinguished, the time from the discovery of the fire condition to the start of extinguishing the fire can be dozens of minutes, the loss is increased, and the artificial fire extinguishment is difficult to find and the fire is accurately extinguished aiming at the fire-starting point. If the water mist is adopted for fire extinguishing, the diffusion speed of the water mist in the air is low, the water mist is difficult to enter the cabinet, so that the protection performance of the internal equipment is poor, and the targeted fire extinguishing of a single cabinet cannot be realized. Adopt heptafluoropropane, pentafluoroethane or mist can in time put out a fire effectively, but need additionally lay equipment such as fire extinguishing agent pipeline, need seal whole space can't realize that single rack realizes the pertinence and puts out a fire during the use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide an use rack cooling system of carbon dioxide as working medium, possess the refrigeration function of putting out a fire, can realize high-efficient, the safe cooling of rack.

The utility model provides a its technical problem realize through following technical scheme:

the utility model provides an use rack cooling system of carbon dioxide as working medium which characterized in that: comprising CO₂Refrigerating unit, CO₂Supply line, cabinet, CO₂Return line and CO₂A storage tank, the cabinet comprises a cabinet body and CO arranged on the cabinet body₂Import, CO₂Outlet, CO₂Heat exchange line and fan, the CO₂CO passing through refrigerating unit₂CO with supply line connected to the cabinet₂Inlet, the CO₂The inlet is connected to the CO₂At one end of the heat exchange line, the CO₂The other end of the heat exchange pipeline is connected to the CO₂Outlet, CO of the cabinet body₂Outlet through CO₂A return line is connected to the CO₂Storage tank of said CO₂Storage tank passing CO₂A return line is connected to the CO₂A refrigeration unit.

And, the CO₂A valve is arranged on the storage tank.

Moreover, a cabinet body of the cabinet is provided with CO₂Nozzle of said CO₂A nozzle connected to the CO₂A supply line.

Moreover, the air volume of the fan can be adjusted, and the CO is₂The opening and closing of the nozzle can be adjusted.

The utility model discloses an advantage and beneficial effect do:

1. the utility model discloses use carbon dioxide as the rack cooling system of working medium, carbon dioxide is natural existence in the nature, and ozone destroys the latent energy and global warming potential is almost zero, and the unit volume refrigerating output is big, arranges that the required volume of refrigeration part can be reduced inside the rack.

2. The utility model discloses use the rack cooling system of carbon dioxide as working medium, compare in the additional data center who arranges the pipeline of putting out a fire, adopt the carbon dioxide to be used for putting out a fire simultaneously as refrigeration working medium, do not need additionally to lay the fire extinguishing agent pipeline, can be in order to save the fire control investment, can be used to reduce the volume that the two occupy again, reduce the shared space of rack, help the construction more to encrypt and efficient computer lab. The cabinet refrigeration and the fire extinguishing are combined, so that the danger and low efficiency of manually operating the fire extinguisher are avoided, the high investment of gas fire extinguishing is avoided, and the high-efficiency operation and the investment reduction are realized.

3. The utility model discloses use the rack cooling system of carbon dioxide as working medium, adopt the carbon dioxide in the refrigeration pipeline to put out a fire, when the conflagration breaing out, need not personnel and get into the scene of a fire, guaranteed the life safety of personnel of putting out a fire, the carbon dioxide pipeline is put out a fire at the inside release carbon dioxide of rack, can directly put out a fire at the ignition point, can realize the accurate fire extinguishing of single rack.

4. The utility model has the advantages of being scientific and reasonable in design, possess the refrigeration function of putting out a fire, can realize high-efficient, the safe cooling of rack, guarantee the safety in utilization of rack.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the cabinet of the present invention;

fig. 3 is a left side view of the cabinet of the present invention;

fig. 4 is a right side view of the cabinet of the present invention;

fig. 5 is a sectional view taken along line a-a of fig. 4.

Description of the reference numerals

1-CO₂Refrigerating unit, 2-CO₂Supply line, 3-cabinet, 4-CO₂Return line, 5-valve, 6-CO₂Storage tank, 7-CO₂Import, 8-CO₂Outlet, 9-cabinet, 10-CO₂Working medium heat exchange pipeline, 11-fan and 12-CO₂And (4) a nozzle.

Detailed Description

The present invention will be described in further detail with reference to specific examples, which are provided for illustrative purposes only, and are not intended to be limiting, and the scope of the present invention should not be limited thereby.

Cabinet cooling system using carbon dioxide as working medium and innovation thereofCharacterized in that: comprising CO₂Refrigerating unit 1, CO₂Supply line 2, cabinet 3, CO₂Return line 4 and CO₂A storage tank 6, a cabinet comprising a cabinet body 9 and CO arranged on the cabinet body₂Inlet 7, CO₂Outlet 8, CO₂ Heat exchange line 10 and fan 11, CO₂CO passing through refrigerating unit₂CO with supply line connected to cabinet₂Import, CO₂The inlet is connected to CO₂One end of the heat exchange line, CO₂The other end of the heat exchange pipeline is connected to CO₂CO of the outlet, cabinet₂Outlet through CO₂The return line is connected to CO₂Storage tank, CO₂Storage tank passing CO₂The return line is connected to CO₂In the refrigerating unit, carbon dioxide naturally exists in the nature, the ozone destruction potential value and the global warming potential value are almost zero, the refrigerating capacity per unit volume is large, and the volume required by the refrigerating part can be reduced by arranging the refrigerating unit in the cabinet.

CO₂A valve 5 is arranged on the storage tank, and CO can be controlled in real time through the valve₂Store tank to CO₂Make-up CO in return line₂The supply amount of the refrigerant is ensured.

CO is arranged on the cabinet body of the cabinet₂Nozzle 12, CO₂Nozzle connected to CO₂The supply line can spray CO2 to the rack inside when the rack is on fire, plays the effect of cooling and isolated oxygen.

The air volume of the fan can be adjusted, and CO is₂The opening and closing of the nozzle can be adjusted, the refrigerating capacity of the control system can be adjusted in real time, efficient refrigeration of the cabinet is guaranteed, and the operation safety performance of the cabinet is guaranteed.

The utility model discloses a theory of operation does:

CO₂the refrigeration unit remains open to CO₂CO of supply line₂The pressure of the working medium is within 8-12 MPa, and the temperature is within 2-7 ℃, so that the working medium is ensured to be in a supercritical state;

CO₂supercritical CO in the supply line₂By CO₂CO entering the cabinet at the inlet₂Heat exchange line through which air flows when the fan is turned onCO₂The outside of the heat exchange pipeline is cooled, then the heat generated in the cabinet is taken away, and the refrigerating capacity of the system can be changed by adjusting the air quantity of the fan;

CO after heat exchange and temperature rise with air₂By CO₂Outlet into CO₂Return line, when CO₂CO in return line₂When the working medium pressure is lower than 8-12 MPa, the valve is opened by CO₂Store tank to CO₂Return line filled with CO₂Ensuring the pressure to be within the range of 8-12 MPa; CO2₂The working medium in the return line finally enters CO₂A refrigerating unit 1; in addition, CO₂The refrigerating unit 1 can flexibly adjust the flow of the working medium according to the requirement and change the cooling capacity of the working medium;

the cabinet is internally provided with CO₂Nozzle capable of discharging CO when the cabinet is on fire₂Spout inside the rack, play the effect of cooling and isolated oxygen, release the air of ordinary pressure with highly compressed supercritical carbon dioxide, carbon dioxide can get into the diphasic district and present low temperature gas-liquid two-phase state, and microthermal liquid carbon dioxide sprays can the powerful cooling rack on the rack, and can not cause the chemical injury to the rack.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims, and therefore, the scope of the present invention is not limited to the disclosure of the embodiments and the accompanying drawings.

Claims (4)

1. The utility model provides an use rack cooling system of carbon dioxide as working medium which characterized in that: comprising CO₂Refrigerating unit, CO₂Supply line, cabinet, CO₂Return line and CO₂A storage tank, the cabinet comprises a cabinet body and CO arranged on the cabinet body₂Import, CO₂Outlet, CO₂Heat exchange line and fan, the CO₂CO passing through refrigerating unit₂CO with supply line connected to the cabinet₂Inlet, the CO₂The inlet is connected to the CO₂Heat exchangeAt one end of the pipeline, the CO₂The other end of the heat exchange pipeline is connected to the CO₂Outlet, CO of the cabinet body₂Outlet through CO₂A return line is connected to the CO₂Storage tank of said CO₂Storage tank passing CO₂A return line is connected to the CO₂A refrigeration unit.

2. The cabinet cooling system using carbon dioxide as working medium according to claim 1, wherein: the CO is₂A valve is arranged on the storage tank.

3. The cabinet cooling system using carbon dioxide as working medium according to claim 1, wherein: CO is arranged on the cabinet body of the cabinet₂Nozzle of said CO₂A nozzle connected to the CO₂A supply line.

4. The cabinet cooling system using carbon dioxide as working medium according to claim 3, wherein: the air volume of the fan is adjustable, and the CO is₂The opening and closing of the nozzle can be adjusted.

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