CN103687446A - Efficient cooling air conditioner system of rack-mounted server cabinet - Google Patents
Efficient cooling air conditioner system of rack-mounted server cabinet Download PDFInfo
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- CN103687446A CN103687446A CN201310651716.3A CN201310651716A CN103687446A CN 103687446 A CN103687446 A CN 103687446A CN 201310651716 A CN201310651716 A CN 201310651716A CN 103687446 A CN103687446 A CN 103687446A
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Abstract
The invention discloses an efficient cooling air conditioner system of a rack-mounted server cabinet. The system comprises a refrigerating module and a cabinet body provided with an air inlet. The refrigerating module conveys cold air to the cabinet body through the air inlet, a partition board is arranged in the cabinet body, one side of the partition board is an air flue, the other side of the partition board is provided with a containing space used for containing a server, the cross section of the air flue is gradually reduced in the flow direction of the air, the partition board is provided with a plurality of air inlets in the flow direction of the air, and the air inlets are provided with arc-shaped flow guide plates. By means of the partition board, the cross section of the air flue is gradually reduced in the flow direction of the air, so that the cold air entering air gaps is equal in speed and amount, and uniform heat dissipation is achieved. Due to the facts that a sound-insulating material layer is arranged on a shell, arc-shaped transition plates are arranged on the corners of the cabinet body and the arc-shaped flow guide plates are arranged on the air inlets, noise is lowered, and the system is low in noise during work.
Description
Technical field
The present invention relates to a kind of air-conditioning system field, particularly a kind of high efficiency and heat radiation air-conditioning system of rack-mount server rack.
Background technology
Along with the high speed development of the technology of semiconductor chips, the arithmetic speed of computer processor chip increases exponentially and volume significantly dwindles, but the thing followed is the heat dissipation problem of server golf calorific value.In the informationalized epoch, knowledge information enters into social industry-by-industry with explosive growth speed.Increasing office, study, public arena have be unable to do without the processing of information.A plurality of servers can be assembled in to a rack-mount server in rack, easy to use, thereby had in a large number information processing to need but occasion that non-extensive concentrated message is processed is widely used.As being all equipped with server cabinet in a lot of enterprises, school library.Although a lot of blade servers have adopted the processor of low-power consumption in design, heat density is still very high.This makes 4kW, 6kW, and 8kW, 10kW, or even 12kW rack occurs in succession.The heat dissipation problem that these high density server racks face, has seriously restricted the development of server cabinet.How to improve the heat-sinking capability of rack?
For large-scale data centers such as Large-scale Data Rooms, server hosts, adopt water-cooling can effectively improve cooling machine cabinet amount.IBM Corporation has adopted Water Cooling Technology on mainframe, by the bright water-cooled cabinet of test chart, makes server radiating in rack reduce half, and water-cooled can be saved the power consumption of 10%-30%, and cooling effect is better than current traditional cooling means.But water-cooling pattern need to attach corresponding cold water heat exchange coil, handpiece Water Chilling Units, and scale is huger, is not suitable for miniaturization.So seldom use water cooled heat radiating in small-sized standard server rack.
The most of air cooling heat dissipation that adopts of existing separate standards rack.Standard rack type server cabinet carries refrigerating system and carrys out cooling server, by the circulation of air-flow in rack, machine heat radiation is taken away.Rack is provided with air inlet, air outlet, and the gas in rack enters into kind of refrigeration cycle by air outlet lowers the temperature, and the cold air after cooling is delivered to interior of equipment cabinet by air inlet.So circulation realizes rack heat to outside transmission.
But the refrigerating capacity that cabinet air conditioner provides is subject to the restriction of space, noise etc.The small volume of rack own, the limited space providing for air-conditioning.To in this limited space, try one's best and reasonably arrange the air supply rate of large specification, will cause series of problems.Compressor is in narrow space, and its heat cannot fall apart in time to the external world, and compressor temperature can be higher.Increase condenser, evaporator heat exchange amount, and can take away more heat from interior of equipment cabinet, need to increase the air quantity of blower fan, and Wind Volume fan noise will certainly be very large.Air quantity is large, causes the flow velocity of air in air channel to strengthen, and noise strengthens, and has a strong impact on the use of server cabinet, and this has just proposed very large challenge to the design of air-conditioning system.
Existing about optimizing the most of optimization interior of equipment cabinet air current composition that adopts of patent of interior of equipment cabinet heat radiation aspect, with limited refrigerating capacity, realize best radiating effect, cold air is uniformly distributed in rack, and be unlikely to the phenomenon that occurs that local temperature is too high.Application publication number is that the patent documentation of CN102566711A discloses a kind of server cabinet, before this patent, before back side panel and server, between rear both sides, form respectively an inlet channel and an exhaust passage, inlet channel and exhaust passage are connected with air inlet and exhaust outlet respectively, the air inlet of this server cabinet and exhaust outlet are for being connected respectively with air outlet and the air intake vent of an aircondition, make the cold airflow that blown out by aircondition enter inlet channel and flow through each server and flow in this aircondition to form airflow circulating by exhaust passage and exhaust outlet via described ventilation hole from this air inlet.But general server cabinet is all higher, the flow direction of its cooling blast is served out or upper entering and lower leaving under being, and because the louvre size on the front side board of server cabinet is identical, this will cause the cooling blast of being located near the server cabinet top of aircondition or the server place of bottom superfluous, not enough to being located at away from the cooling blast at the server cabinet bottom of aircondition or the server place on top, be unfavorable for the reasonable distribution of cooling blast and effectively distributing of heat.
Application publication number is that the patent documentation of CN102478926A discloses a kind of server cabinet, this patent designs the diameter in the hole on orifice plate, hole near air conditioning air outlet part is little, bore dia away from air conditioning air outlet progressively increases, more even to realize the amount of the air that enters each position of rack.Application publication number is that the patent documentation of CN102480897A discloses a kind of server cabinet, it arranges one and comprises rotating shaft and roll up the curtain that draws in rotating shaft in the front side of rack, draw curtain to be provided with some through holes, the distance of drawing curtain to launch to bottom by this regulates the air quantity that enters rack, avoids excessive near the air quantity of air conditioning air outlet part.Application publication number is that the patent documentation of CN102478927A discloses a kind of server cabinet, it is arranged to orifice plate can rotate around jack shaft, the duct cross-section that orifice plate and rack wall form just can progressively become greatly from the near to the remote, realizes being equally uniformly distributed of air-flow.On the basis of the patent documentation that above three patent documentations are is CN102566711A at application publication number, from more detailed angle, come the air-flow of Optimized Service device inside to distribute, to the diameter in hole, the angle of plate on the orifice plate of rack air-supply, arrange, the amount that makes to deliver to the cold air of each layer of rack equates.But they do not have corresponding noise reduction measure, and server cabinet noise is larger, and equate in order to make to enter the amount of the cold air of each layer of rack, dispel the heat more even, also have further room for improvement.
Summary of the invention
For the problems referred to above, the invention provides a kind of high efficiency and heat radiation air-conditioning system of rack-mount server rack.This system can make the noise of cabinet type server less, and the air quantity that can make to enter the cold air of each layer of rack equates, wind speed equates, and cold air has larger wind speed, good heat dissipation effect.
The technical scheme that the present invention takes is as follows:
A kind of high efficiency and heat radiation air-conditioning system of rack-mount server rack, comprise refrigeration module, with the cabinet of air inlet, described refrigeration module is carried cold air by air inlet to cabinet, in described cabinet, be provided with dividing plate, one side of this dividing plate is air channel, and opposite side is that the cross section in air channel reduces along air flow gradient for placing the spatial accommodation of server, on described dividing plate, along air flow, be placed with some air inlets, each air inlet place is equipped with arc deflector.
By arc deflector, can make air-flow more steady, air flow resistance is less.
As preferably, the evaporator in described refrigeration module, compressor, condenser are arranged in same housing, and the inwall of this housing is provided with insulation material layer.Refrigeration module comprises evaporator, compressor, condenser and choke valve, and they are installed in housing, by insulation material layer is set in housing, and can effective noise reduction function.
As preferably, described evaporator comprises conduit, and described conduit arc-shaped transition is connected to air inlet.
As preferably, the surface of described insulation material layer has tapered protrusion.This can obtain better soundproof effect.
As preferably, described insulation material layer is deadening felt or fiber board.
In described spatial accommodation, being placed with multiple servers, is wind gap between adjacent two-server, and each air inlet is towards a wind gap of correspondence.
As preferably, one end of described arc deflector and dividing plate are tangent fixing, and the other end stretches to corresponding wind gap.
As preferably, also comprise the wind outlet section being formed by described arc deflector and cabinet inwall, the inlet face of wind outlet section is to the air flow in air channel, and the outlet of wind outlet section is towards corresponding wind gap.The wind outlet section being provided with by air inlet is sent to cold air on each server, realizes the shunting of cold air.
As preferably, described cabinet comprises the top board that is parallel to each other and base plate, the front, rear, left and right side plate being connected with base plate with top board, and described dividing plate closes on front side board, and described air channel is between front side board and dividing plate.
As preferably, described air inlet is located on base plate or top board, and described back side panel is provided with exhaust outlet away from one end of air inlet.
More preferred, described air inlet is opened on base plate, front side board and and dividing plate between.
As preferably, described exhaust outlet is provided with ventilating fan.By ventilating fan can be fast by Bas Discharged to cabinet outside.
As preferably, the corner of described cabinet inwall is provided with arc-shaped transition plate.Arc-shaped transition plate can ventilate more smooth and easy, and can reduce noise.As preferably, the evaporator in described refrigeration module, compressor, condenser are arranged in same housing, and the inside of this housing is provided with insulation material layer.By insulation material layer, can reduce noise.
The invention has the beneficial effects as follows:
1. rack air outlet is sleeve configuration air port, and arc deflector is set to reduce air flow resistance, and air port particular design, can keep cold air steadily to enter into rack with larger wind speed.
2. the speed when diversion Design in air port makes cold air pass through server is larger, and cold air can be sent to the place farther from air port, and radiating effect is better.
3. the cross section that the distance adjustment by dividing plate and rack wall realizes air channel reduces along air flow gradient, has guaranteed that in air channel, wind speed is stable, and the speed, the air quantity that make to enter the cold air of each layer of wind gap equate, realize the Homogeneouslly-radiating of whole rack.
4. by insulation material layer being set on housing, the transition of arc water conservancy diversion being set and in the particular design in air port, having reduced the noise that Air Flow produces in rack corner, improved the air current composition in rack.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of the high efficiency and heat radiation air-conditioning system of rack-mount server rack of the present invention;
Fig. 2 is Air Flow schematic diagram in inlet channel;
Fig. 3 is refrigeration module vertical view;
Fig. 4 is that in refrigerating system, quieter material arranges vertical view;
Fig. 5 is air handling process figure.
In figure, each Reference numeral is:
1. cabinet, 2. server, 3. back side panel, 4. ventilating fan, 5. exhaust outlet, 6. arc-shaped transition plate, 7. front side board, 8. air inlet, 9. arc deflector, 10. dividing plate, 11. wind gaps, 12. air channels, 13. air inlets, 14. refrigeration modules, 15. base plates, 16. condenser air outlets, 17. condensers, 18. condenser air inlets, 19. evaporator air outlets, 20. evaporators, 21. evaporator air inlets, 22. compressors, 23. insulation material layers, 24. spatial accommodations, 25. top boards.
Embodiment
As shown in Figure 1, a kind of high efficiency and heat radiation air-conditioning system of rack-mount server rack, comprise cabinet 1 and refrigeration module 14 from cold air gas to cabinet 1 that carry, cabinet 1 comprises the top board 25 and base plate 15, the front side board 7 being connected with base plate with top board, back side panel 3, left plate, right plate being parallel to each other, in cabinet, be provided with dividing plate 10, dividing plate 10 consists of polylith segmented plate, and each segmented plate closes on and be parallel with front side board 7, and the distance of each segmented plate and front side board 7 reduces from the bottom to top successively.Base plate 15 is provided with the air inlet 13 being connected with refrigeration module 14, and air inlet 13 is opened on base plate, front side board 7 and and dividing plate 10 between.One side of dividing plate is air channel 12, opposite side is for placing the spatial accommodation 24 of server, air channel 12 is between front side board and dividing plate, the cross section in air channel reduces in gradient along air flow, air flow refers to air flow direction in air channel from air inlet is come in, and in the present embodiment, air flow is along front side board direction from the bottom to top.
In spatial accommodation 24, be placed with multiple servers 2, it between adjacent two-server, is wind gap 11, on dividing plate, along air flow, be placed with some air inlets 8, each air inlet place is provided with two arc deflectors 9, one end of arc deflector and dividing plate are tangent fixing, the other end stretches to corresponding wind gap, and arc deflector can make air-flow more steady, and air flow resistance is less.Two arc deflectors 9 and cabinet inwall have formed wind outlet section, and the inlet face of wind outlet section is to the air flow in air channel, and the outlet of wind outlet section is towards corresponding wind gap.The wind outlet section being provided with by air inlet is sent to cold air on each server, realizes the shunting of air-flow, and arc deflector can make mild the branching in wind gap of cold air, and can reduce noise.
Top board and forward and backward side plate intersection, base plate and forward and backward side plate intersection are equipped with arc arc-shaped transition plate 6.Arc-shaped transition plate can ventilate more smooth and easy, and can reduce noise.Back side panel is provided with exhaust outlet 5 away from one end of air inlet, and this exhaust outlet is provided with ventilating fan 4, by ventilating fan, can fast air-flow be expelled to cabinet outside.
As shown in Figure 3, refrigeration module 14 comprises a housing, in housing, be provided with evaporator 20, compressor 22, condenser 17, throttling module (not shown in FIG.), in housing, also offer condenser air outlet 16, condenser air inlet 18, evaporator air outlet 19, evaporator air inlet 21, evaporator comprises conduit, conduit is arc, and evaporator air outlet and air inlet are connected.Six faces of inwall of housing all post insulation material layer 23, see Fig. 4, and insulation material layer 23 is deadening felt or fiber board, and surface has tapered protrusion.
The noise of system mainly contains two sources, and one is the noise of refrigeration module, and another is the noise of Air Flow in air channel, particularly larger at each corner, air inlet place noise.The noise producing for Air Flow, the design in the wind outlet section of the present invention by being surrounded by arc deflector 9, arc-shaped transition plate that cabinet inwall corner is provided with, air channel that sectional area reduces gradually, avoid air quantity in air channel to change the wind speed variation bringing, from noise source, reduced noise; Noise for refrigeration module, has effectively reduced noise by acoustic material.
During real work, by refrigeration module, provide cold air.Refrigeration module selects R134a as cold-producing medium, and cold-producing medium is compressed in compressor, and the condensation cooling in condenser of the cold-producing medium of HTHP becomes the cold-producing medium of cryogenic high pressure.Cold-producing medium is through the throttling of throttling module, and temperature drops to after designed cryogenic temperature, enters into evaporator evaporation endothermic, and the cooling air that enters evaporator, finally enters compressor, completes whole cyclic process.
From evaporator cold air out, by air inlet, enter air channel, because the cross section in air channel evenly reduces along air flow, the air that cross section reduces part enters wind gap by wind outlet section, because cross-sectional gradient reduces, air mass flow and the speed that can realize in a wind gap all equate, realize cold air being uniformly distributed in cabinet, see Fig. 2, cold air enters and server is carried out after wind gap coolingly, finally flows into exhaust outlet, by ventilating fan, is directly discharged to rack outside.
Below by embodiment and comparative example, relatively further illustrate effect of the present invention.In the situation that guarantor unit's time is consistent through the air quantity of each wind gap, comparative example and comparative example are at the wind speed at each air inlet place.
Consider that dewfall can cause larger impact to server, by 3 ℃ of the cold-producing medium design evaporating temperatures in evaporator, design heat transfer temperature difference is 8 ℃, and evaporator air outlet temperature is 11 ℃, and this can guarantee that cold air delivers in server cabinet not dewfall.
The refrigerating capacity that refrigeration module can provide for interior of equipment cabinet is 3.5Kw.
Cabinet inner air circulating treatment procedure can be regarded as the air in cabinet is processed into O state point from N state point, and wherein, N is the air condition at place, gas outlet in cabinet, and O is the air condition at air inlet place, sees Fig. 5.The parameter of each state point is as shown in table 1.
Table 1
The required refrigerating capacity of unit mass air is:
qqH
N-H
o=27.69KJ/Kg
Wherein, q is expressed as the required refrigerating capacity of unit mass air, and HN is the enthalpy of N state point, H
oenthalpy for O state point.
The required total blast volume of refrigerating capacity that reaches 3.5Kw is:
The refrigerating capacity that wherein Q can provide for interior of equipment cabinet for refrigeration module, m reaches the required total blast volume of 3.5Kw refrigerating capacity.
The cross section in air channel is rectangle, near the width of that end of air inlet, is 500mm, and thickness is 50mm, wherein the thickness in air channel be segmented plate to the distance of outer panel, and air channel thickness reduces from down to up in gradient.The initial wind speed v in air channel
0for:
Because the thickness in air channel reduces along gradient, thereby cause the mobile air of part can not enter the further part in air channel, but enter wind gap by the wind outlet section being formed by arc deflector 9 and cabinet inwall, for server cools.Wind gap number is 6, for guaranteeing that air flows into air quantity consistent (1/6 of total blast volume m, the i.e. 0.0172m of each wind gap
3/ s), from the bottom up at air inlet place, air channel tranverse sectional thickness is followed successively by 50mm, 41.7mm, 33.4mm, 25.1mm, 16.8mm, 8.5mm.
As shown in table 2, in the situation that initial wind speed, each wind gap air quantity are consistent, each parameter comparison of embodiment and comparative example.
Table 2
By table 2, can find, in the situation that initial velocity is consistent with each wind gap flow, the wind speed at each air inlet place of comparative example can progressively reduce.And in the present invention, the wind speed at air inlet place can keep original speed always, and the wind speed that enters into wind gap also can keep each layer identical, air velocity is larger, enter in server gap and can deliver to farther place, air-flow is more even, and heat radiation that can better takeaway service device.
Claims (9)
1. the high efficiency and heat radiation air-conditioning system of a rack-mount server rack, comprise refrigeration module, with the cabinet of air inlet, described refrigeration module is carried cold air by air inlet to cabinet, it is characterized in that, in described cabinet, be provided with dividing plate, a side of this dividing plate is air channel, opposite side is for placing the spatial accommodation of server, the cross section in air channel reduces along air flow gradient, on described dividing plate, along air flow, is placed with some air inlets, and each air inlet place is equipped with arc deflector.
2. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 1, is characterized in that, the evaporator in described refrigeration module, compressor, condenser are arranged in same housing, and the inwall of this housing is provided with insulation material layer.
3. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 1 and 2, it is characterized in that, in described spatial accommodation, being placed with multiple servers, is wind gap between adjacent two-server, and each air inlet is towards a wind gap of correspondence.
4. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 3, is characterized in that, one end of described arc deflector and dividing plate are tangent fixing, and the other end stretches to corresponding wind gap.
5. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 4, it is characterized in that, also comprise the wind outlet section consisting of described arc deflector and cabinet inwall, the inlet face of wind outlet section is to the air flow in air channel, and the outlet of wind outlet section is towards corresponding wind gap.
6. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 1, it is characterized in that, described cabinet comprises the top board that is parallel to each other and base plate, the front, rear, left and right side plate being connected with base plate with top board, described dividing plate closes on front side board, and described air channel is between front side board and dividing plate.
7. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 6, is characterized in that, described air inlet is located on base plate or top board, and described back side panel is provided with exhaust outlet away from one end of air inlet.
8. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 7, is characterized in that, described exhaust outlet is provided with ventilating fan.
9. the high efficiency and heat radiation air-conditioning system of rack-mount server rack according to claim 1, is characterized in that, the corner of described cabinet inwall is provided with arc-shaped transition plate.
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