CN105627636B - A kind of air flow modified air conditioner in machine room - Google Patents
A kind of air flow modified air conditioner in machine room Download PDFInfo
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- CN105627636B CN105627636B CN201610013514.XA CN201610013514A CN105627636B CN 105627636 B CN105627636 B CN 105627636B CN 201610013514 A CN201610013514 A CN 201610013514A CN 105627636 B CN105627636 B CN 105627636B
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- deflector
- evaporator
- air conditioner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- Mechanical Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses a kind of air flow modified air conditioner in machine room, including air conditioner frame, air inlet, fan assembly, baffle assembly and two groups of evaporators, the air inlet is located at the side of air conditioner frame, the baffle assembly includes the first deflector, second deflector and the 3rd deflector, first deflector is straight panel and vertical is located among two groups of evaporators, and bottom is fixedly connected with the bottom of evaporator, the both ends of second deflector are bent in the same direction, and it is located at the back lower place of the evaporator away from air inlet, 3rd deflector is straight panel and the inclined top for being located at the second deflector, the inclination angle of 3rd deflector is obtuse angle.The efficiency of actual of present invention lifting evaporator, while refrigeration system safe operation is ensured, is obviously improved the refrigerant and Energy Efficiency Ratio of air conditioner, realizes the purpose of energy saving and efficiency increasing.
Description
Technical field
The invention belongs to air conditioner in machine room structure-design technique field, more particularly to the improvement of air conditioner in machine room air flow and excellent
Change.
Background technology
By the rapid development of many decades, communication, IT, mobile Internet and big data business all obtain sharp increase.Make
For cental system, requirement of the IDC data centers to air conditioner in machine room be no longer it is most basic safe and reliable, it is efficient, energy saving gradually into
Attach most importance to.
The key means of machine room air-conditioning energy-saving are exactly interior increase evaporator area, reduction air circulation resistance in a limited space
Power, reduce wind turbine power consumption.There is more unfavorable air current composition problem after evaporator area is increased in traditional air conditioner in machine room,
It is insufficient that air current composition confusion causes the refrigerant in evaporator part flow to evaporate, and enters pressure without the refrigerant of evaporating completely
Contracting machine, causes compressor liquid hammer, has seriously affected the normal table operation of air conditioner, the performance and efficiency of air conditioner also decline significantly
Subtract.In order to solve this problem, conventional means are the flows for significantly adjusting evaporator, and the journey flow arrangement such as or not excessive difference is again
Oil return to refrigeration system causes to seriously affect, and compressor may be caused to burn, air conditioner is delayed machine.
As shown in Figure 1, in the air conditioner in machine room of the prior art, hot-air enters inside air conditioner from front door filter screen, passes through
Evaporator cooling after, from wind turbine to unit outside convey, for convenience of explanation, by evaporator assemblies be split as front evaporator and after
Evaporator, and merged by 6 evaporators form altogether, label is followed successively by I, II, III, IV, V, VI.By experiment test and simulation,
The air flow path line schematic diagram shown in Fig. 1 is depicted, the outlet mean temperature for the evaporator for being I-VI is numbered in figure（Import
In the case of state consistency）Respectively 20.2 DEG C, 17.4 DEG C, 19.1 DEG C, 8.5 DEG C, 9.2 DEG C, 13 DEG C.This no deflector is set
In meter scheme, the rate of air circulation of front side evaporator is significantly greater than the circulation of rear side evaporator, the outlet temperature of front side evaporator
Degree has the very big degree of superheat.
As shown in the figure, portion of air is again passed by after the cooling of front side evaporator at rear side evaporator V, VI, cause
Air-flow is very chaotic at rear side evaporator V, VI, and the amount by the hot-air at V, VI is on the low side, i.e., the load of this section evaporator
It is relatively low.
As shown in the figure, analyzed from air flow path, the rear side of water spraying tray is located at rear side evaporator IV, there are larger at this
Air flow swirl, cause the energy loss of air circulation, this section of evaporator heat exchange effect is very poor.From the point of view of experimental data, evaporation
Outlet temperature at section IV, V is almost without overheat, and wherein the outlet of evaporator section IV liquid refrigerant proportion is very big, and perfect condition
Under, evaporator outlet should be gaseous refrigerant, and ideal temperature should be 12 DEG C of ＞.This partial vaporiser, which does not play it, to be had
Refrigerating capacity, moreover, evaporator outlet band liquid can cause compressor liquid hammer, refrigeration system is unable to safe and stable operation.Therefore,
In the designing scheme of traditional no deflector, the efficiency of actual of rear side evaporator is extremely low, has seriously affected air conditioner
Safe and stable operation.Conventional solution method be exactly using evaporator area, more Wind Volume and the power of bigger wind turbine and
The air conditioner size of bigger.It is relatively low using the air-conditioning engine efficiency of this designing scheme, active data center can not be met to energy saving
The requirement of product.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of air flow modified machine
Room air-conditioning, starts with from air current composition optimization, pointedly improves the heat transfer effect of the poor part of evaporator heat exchanger, lifting evaporation
The efficiency of actual of device, while refrigeration system safe operation is ensured, is obviously improved the refrigerant and Energy Efficiency Ratio of air conditioner,
Realize the purpose of energy saving and efficiency increasing.
Technical solution：To achieve the above object, the present invention uses following technical scheme：A kind of air flow modified computer room
Air-conditioning, including air conditioner frame, air inlet, fan assembly, baffle assembly and two groups of evaporators, the air inlet are located at air-conditioning frame
The side of frame, every group of evaporator is arranged by more fin heat exchange pipe horizontal Tiles forms flat plate, two groups of flat plates
Evaporator it is inclined be arranged in air conditioner frame and form " V " font, the fan assembly is located at the top of evaporator and makes
Air-flow flows through from bottom to up；The baffle assembly includes the first deflector, the second deflector and the 3rd deflector, and described first
Deflector for straight panel and it is vertical be located among two groups of evaporators, and bottom is fixedly connected with the bottom of evaporator, described second
The both ends of deflector are bent in the same direction, and be located at away from air inlet evaporator the back lower place, the 3rd deflector for straight panel simultaneously
The inclined top for being located at the second deflector, the inclination angle of the 3rd deflector is obtuse angle.
Preferably, the both ends of second deflector are bent to form the first flanging and the second flanging, and second in the same direction
Flow guide plate body, and first flanging is horizontally disposed with, the inclination angle of second flow guide plate body is acute angle.
Preferably, the height of the evaporator is H1, the height of first deflector is H2, the base of evaporator
Distance apart from air conditioner frame bottom is H3, and the distance of first flanging and base of evaporator is H4, the second flow guide plate body
The distance of upper end and air conditioner frame bottom be H5, the lower end of the 3rd deflector and the distance of air conditioner frame bottom are H6, first
Here the distance with air inlet is L1, and the distalmost end of base of evaporator and the distance of air inlet are L2, the second flow guide plate body
The distance of lower end and air inlet is L3, and the upper end of the second flow guide plate body and the distance of evaporator are L4, the 3rd deflector it is upper
End and the distance of evaporator are L4, and the distance of the 3rd deflector lower end and air conditioner frame is L4, and the angle of two groups of evaporators is A,
The inclination angle of second flanging is identical with the inclination angle of the 3rd deflector, is B, the inclination angle of evaporator and the second flow guide plate body
Inclination angle it is identical, be C, wherein, the numerical relation between each parameter is as follows：H2=0.25~0.3*H1；H4<0.4H3；H6>
H5>H3；L3>L2>L1；B=135 °~145 °；C=90-0.5A.
Preferably, the bottom of two groups of evaporators is equipped with water spraying tray, between the water spraying tray and base of evaporator also
Equipped with supple buffer layer.
Preferably, the side of " V " the font base of evaporator is equipped with downward flanging, the water spraying tray is surrounded by
Upward flanging.
Beneficial effect：Compared with prior art, the present invention is led between front side evaporator and rear side evaporator among design
Flowing plate, reduces interference of the cold wind to rear side evaporator of front side evaporator out so that rear side evaporator is from front side evaporator
After airflow influence, its hot wind throughput substantially increases, and has been obviously improved heat transfer effect；Increase by 2 in rear side evaporator rear portion at the same time
Block deflector, the deflector can effectively reduce air flow swirl, reduce the loss of air-flow energy of flow, and carry out by many experiments
Optimization design, obtains orientation setting and the size relationship of optimal baffle assembly, so that wind turbine power consumption is farthest reduced,
Pointedly the part poor to evaporator heat exchange effect guides ventilation, significantly improves the problem of its evaporator is insufficient.
Brief description of the drawings
Fig. 1 is the structure diagram of the prior art；
Fig. 2 is the structure diagram of air flow modified air conditioner in machine room of the present invention；
Fig. 3 is the size relationship schematic diagram of the baffle assembly of air flow modified air conditioner in machine room of the present invention；
Fig. 4 is the operation principle schematic diagram of air flow modified air conditioner in machine room of the present invention.
Wherein, air conditioner frame 1, air inlet 2, fan assembly 3, evaporator 4, water spraying tray 5, the first deflector 6, the second water conservancy diversion
Plate 7, the 3rd deflector 8.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.As described below is only the side of being preferable to carry out of the present invention
Formula, it should be pointed out that：For those skilled in the art, without departing from the principle of the present invention, may be used also
To make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
As shown in Figure 2, air flow modified air conditioner in machine room of the invention, including air conditioner frame, air inlet, blower fan group
Part, baffle assembly and two groups of evaporators, the air inlet are located at the side of air conditioner frame, and two groups of evaporators are divided into preceding steaming
Device and finisher are sent out, arranges to form flat plate by more fin heat exchange pipe horizontal Tiles, the evaporation of two groups of flat plates
Device is inclined to be arranged in air conditioner frame and forms " V " font, the fan assembly be located at the top of evaporator and make air-flow from
Down toward above flowing through；The baffle assembly includes the first deflector, the second deflector and the 3rd deflector, first deflector
For straight panel and it is vertical be located among two groups of evaporators, and bottom is fixedly connected with the bottom of evaporator, second deflector
Both ends bend in the same direction, and be located at the back lower place of the evaporator away from air inlet, the 3rd deflector is straight panel and inclined
It is located at the top of the second deflector.
As shown in figure 3, the height of the evaporator is H1, the height of first deflector is H2, the evaporator bottom
Distance of the portion apart from air conditioner frame bottom is H3, and the distance of first flanging and base of evaporator is H4, the second deflector sheet
The upper end of body is H5 with the distance of air conditioner frame bottom, and the lower end of the 3rd deflector and the distance of air conditioner frame bottom are H6, the
One this side and the distance of air inlet are L1, and the distalmost end of base of evaporator and the distance of air inlet are L2, the second flow guide plate body
Lower end and the distance of air inlet be L3, the upper end of the second flow guide plate body and the distance of evaporator are L4, the 3rd deflector
The distance of upper end and evaporator is L4, and the distance of the 3rd deflector lower end and air conditioner frame is L4, and the angle of two groups of evaporators is
A, the inclination angle of the second flanging is identical with the inclination angle of the 3rd deflector, is B, the inclination angle of evaporator and the second deflector sheet
The inclination angle of body is identical, is C.Wherein, the orientation of baffle plate assembly is set and size relationship is as follows：H2=0.25~0.3*H1；H4
<0.4H3；H6>H5>H3；L3>L2>L1；B=135 °~145 °；C=90-0.5A.It is preferred that B is 140 °.
Preferably, set in the bottom of two groups of evaporators and be surrounded by upward folded water spraying tray, and in water drenching
The upper surface of disk sets supple buffer layer, and when installation makes supple buffer layer be close to the bottom of evaporator.When air-flow flows through, due to energy
The relation between windage and the water that floats most effectively is balanced, supple buffer layer is in close contact with weather board, and air-flow is difficult to slow from flexibility
Rush between the contact surface of layer and base of evaporator and pass through, thus the water that floats caused by can passing through to avoid air-flow.
As shown in figure 4, being simulated by experiment test and CFD, corresponding air flow trace schematic diagram, figure acceptance of the bid are depicted
It is denoted as the outlet temperature average value of I-VI evaporator sign section（Under inlet condition unanimous circumstances）Respectively 13.2 DEG C, 14.1
℃、17.5℃、12.4℃、13.6℃、16.1℃。
By designing the deflector of the present invention, the relatively traditional scheme of rate of air circulation of front side evaporator is reduced, rear side
The increase of evaporator air circulation, air current composition substantially optimize, and air flow swirl is obviously reduced, and the heat exchange of evaporator is located at whirlpool
Edge, the circulating resistance of air is small, and wind turbine consumption is low.V, VI section of airflow smooth of rear side evaporator, it is no longer cold by front side evaporator
The influence of wind, outlet temperature are obviously improved, and the practical efficiency of evaporator is higher.The IVth section of rear side evaporator some
Hot-air passes through, and the refrigerant inside evaporator being capable of evaporating completely.From the point of view of evaporator outlet temperature, front side evaporator is with after
Side evaporator still very close to, for evaporator outlet without band liquid phenomenon, liquid hammer risk is not present in compressor.
To sum up, in deflector designing scheme of the invention, the actual heat transfer effect and utilization rate of evaporator are higher, air conditioner
Refrigerant be obviously improved, wind turbine power consumption is relatively low, and complete machine efficiency is higher than industry average value.
Claims (5)
- A kind of 1. air flow modified air conditioner in machine room, it is characterised in that：Including air conditioner frame, air inlet, fan assembly, water conservancy diversion Plate component and two groups of evaporators, the air inlet are located at the side of air conditioner frame, and every group of evaporator is exchanged heat by more fins Pipe horizontal Tile arranges to form flat plate, and the evaporator of two groups of flat plates is inclined to be arranged in air conditioner frame and formed " V " font, the fan assembly are located at the top of evaporator and air-flow is flowed through from bottom to up；The baffle assembly includes the One deflector, the second deflector and the 3rd deflector, first deflector is straight panel and vertical is located in two groups of evaporators Between, and bottom is fixedly connected with the bottom of evaporator, the both ends of second deflector are bent in the same direction, and are located at away from air inlet Evaporator the back lower place, the 3rd deflector is straight panel and the inclined top for being located at the second deflector, and the described 3rd leads The inclination angle of flowing plate is obtuse angle.
- 2. air flow modified air conditioner in machine room according to claim 1, it is characterised in that：The both ends of second deflector The first flanging and the second flanging, and the second flow guide plate body are bent to form in the same direction, and first flanging is horizontally disposed with, it is described The inclination angle of second flow guide plate body is acute angle.
- 3. air flow modified air conditioner in machine room according to claim 2, it is characterised in that：The height of the evaporator is H1, the height of first deflector are H2, and distance of the base of evaporator apart from air conditioner frame bottom is H3, described first The distance of flanging and base of evaporator is H4, and the upper end of the second flow guide plate body and the distance of air conditioner frame bottom are H5, the 3rd The lower end of deflector and the distance of air conditioner frame bottom are H6, and the distance of first this side and air inlet is L1, base of evaporator Distalmost end and the distance of air inlet are L2, and the lower end of the second flow guide plate body and the distance of air inlet are L3, the second deflector sheet The upper end of body and the distance of evaporator are L4, and the upper end of the 3rd deflector and the distance of evaporator are L4, the 3rd deflector lower end Distance with air conditioner frame is L4, and the angle of two groups of evaporators is the inclination angle of A, the inclination angle of the second flanging and the 3rd deflector It is identical, it is B, the inclination angle of evaporator is identical with the inclination angle of the second flow guide plate body, is C, wherein, between each parameter Numerical relation is as follows：H2=0.25~0.3*H1；H4<0.4H3；H6>H5>H3；L3>L2>L1；B=135 °~145 °；C=90- 0.5A。
- 4. air flow modified air conditioner in machine room according to claim 2, it is characterised in that：The bottom of two groups of evaporators Equipped with water spraying tray, supple buffer layer is additionally provided between the water spraying tray and base of evaporator.
- 5. air flow modified air conditioner in machine room according to claim 4, it is characterised in that：" V " the font evaporator bottom The side in portion is equipped with downward flanging, and the water spraying tray is surrounded by upward flanging.
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| CN107816753B (en) * | 2017-11-23 | 2023-10-27 | 珠海格力电器股份有限公司 | Machine room air conditioner and air duct structure thereof |
| CN108489066B (en) * | 2018-05-23 | 2023-11-10 | 南京佳力图机房环境技术股份有限公司 | Water collector and computer lab air conditioner with air guiding device |
| CN108534235B (en) * | 2018-05-23 | 2023-11-10 | 南京佳力图机房环境技术股份有限公司 | Concealed air flow improved machine room air conditioner |
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| CN2306434Y (en) * | 1997-04-19 | 1999-02-03 | 海尔集团公司 | Cabinet-type air-conditioner with air guide |
| JP2004108671A (en) * | 2002-09-19 | 2004-04-08 | Denso Corp | Evaporator |
| CN205332478U (en) * | 2016-01-08 | 2016-06-22 | 南京佳力图机房环境技术股份有限公司 | Mobile improved generation computer lab air conditioner of air |
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