CN105674472B - The refrigeration control method and device of computer room - Google Patents

The refrigeration control method and device of computer room Download PDF

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Publication number
CN105674472B
CN105674472B CN201410663543.1A CN201410663543A CN105674472B CN 105674472 B CN105674472 B CN 105674472B CN 201410663543 A CN201410663543 A CN 201410663543A CN 105674472 B CN105674472 B CN 105674472B
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air temperature
target
return air
conditioning
fan
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CN105674472A (en
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廖宜利
王芳
陈杰
赵大勇
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Victoria Technology Co., Ltd. Jiangmen branch
Vertiv Tech Co Ltd
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Victoria Technology Co Ltd Jiangmen Branch
Vertiv Tech Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The present invention relates to refrigeration technology fields, disclose the refrigeration control method and device of a kind of computer room.The refrigeration control method of the computer room includes: the current return air temperature for receiving each indoor unit of air-conditioning and current supply air temperature;When the current return air temperature is not equal to target return air temperature, according to the corresponding relationship of the compressor rotary speed (or water valve aperture of chilled water air-conditioning) of the rotation speed of fan and compressor air-conditioning of the target return air temperature of storage and each indoor unit of target supply air temperature calibration, adjust rotation speed of fan and compressor rotary speed (or water valve aperture), so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.In the technical solution of the present invention, the adjustable range of air conditioner refrigerating amount can be expanded, and improve the stability of refrigeration control.

Description

The refrigeration control method and device of computer room
Technical field
The present invention relates to refrigeration technology fields, more particularly to the refrigeration control method and device of a kind of computer room.
Background technique
Data center is commonly called as computer room, is a whole set of complicated facility.It not only include computer system and it is other therewith Matched equipment (such as communication and storage system), also the data communication connection comprising redundancy, environmental control equipment, monitoring device And various safety devices.Existing data center, the ratio that energy cost accounts for computer room operation cost is higher, is only lower than half Electric power be used for IT load, and remaining electric power is then used to power and the infrastructure such as cooling system.
For most of computer room using the air-conditioning being set between server as refrigeration equipment, air-conditioning belongs to near-thermal source sky at present It adjusts, is shortened air supplying distance (i.e. the distance between air conditioner air outlet and rack information technoloy equipment) relative to traditional air conditioner in machine room, made The cooling efficiency of cool equipment significantly improves, and has many advantages, such as that control is accurate, cooling velocity is fast.With what is required machine room energy-saving It improves, server and air-conditioning are arranged also to become according to closing cold passage form and be more and more widely used selection.Such as Fig. 1 institute Show, the division of room structure of existing closing cold passage form is divided into two refrigeration units, each refrigeration unit in computer room 1 Including being oppositely arranged in multiple servers 11 and several air-conditionings 12 being arranged between multiple servers 11, two refrigeration units And closing cold passage 13 is formed, the cold airflow that the refrigeration of air-conditioning 12 is formed enters closing cold passage 13, then flows into server 11, with drop The temperature of low server 11.
In the computer room of above-mentioned closing cold passage form, the operating ambient temperature of server is then the supply air temperature of air-conditioning, Therefore, in the computer room of this form, the operating ambient temperature of computer room, refrigeration are adjusted by controlling the supply air temperature of air-conditioning Control strategy is as follows:
Temperature sensor is set to detect supply air temperature in the air outlet of air-conditioning, the refrigeration demand amount of complete machine is by actually sending The difference of air temperature and target supply air temperature is calculated.If practical supply air temperature is higher than target supply air temperature, illustrate to make Cold demand increases, and controls frequency-changeable compressor at this time and improves revolving speed, and/or, control air-conditioning draught fan reduces revolving speed, so that sending Air temperature is reduced to target supply air temperature.If practical supply air temperature is lower than target supply air temperature, illustrate that refrigeration demand amount drops Low, controlling frequency-changeable compressor at this time reduces revolving speed, and/or control air-conditioning draught fan improves revolving speed.This refrigeration control method is adjusted Than faster, but cost brought by this quick adjusting is the restriction of unit refrigerating capacity output and the reduction of efficiency.For example, When computer room thermic load increases, the supply air temperature detected through temperature sensor can be increased, if only reducing the rotation speed of fan of air-conditioning, Although supply air temperature can be made to reduce in a short time, therefore the refrigerating capacity of complete machine may also can decline, from heat load balance From the point of view of angle, finally or supply air temperature can be made to increase again, supply air temperature is not easy stability contorting.And if reducing air-conditioning Compressor rotary speed is improved according to refrigeration demand during rotation speed of fan, although can equally supply air temperature be made to reduce, complete machine be defeated Whether refrigerating capacity out can be with the increase of thermic load and becoming larger also becomes to be not sure, this is because complete machine output refrigerating capacity with The amplitude of variation of rotation speed of fan and compressor rotary speed has direct relation.Moreover, if adjusted in the manner described above, even if complete machine is defeated Refrigerating capacity increases out, but increases the refrigerating capacity of complete machine by reducing rotating speed of air conditioner fan and improving compressor rotary speed, first It first will limit the adjustable range of air-conditioning maximum cooling capacity, it is also possible to deteriorate the efficiency of complete machine.
In addition, since the temperature sensor for feeding back practical supply air temperature is directly arranged at air conditioning exhausting side, the reality of feedback Border supply air temperature value is influenced sensitiveer by rotation speed of fan and compressor rotary speed, and therefore, rotation speed of fan or compressor rotary speed omit Micro-adjustment is easy for so that the temperature of the temperature sensor of air conditioning exhausting side changes, so that supply air temperature may be constantly in The state of adjusting causes the stability of air-conditioning system poor.
Drawback of the prior art is that the parameter using supply air temperature as refrigeration control method, due to compressor rotary speed It not can determine that with the amplitude of variation of rotation speed of fan, therefore, define the adjustable range of air conditioner refrigerating amount, in addition, due to air-supply temperature The influence vulnerable to compressor rotary speed and rotation speed of fan is spent, the stability for also easily leading to refrigeration control system is poor.
Summary of the invention
The present invention provides a kind of refrigeration control method of computer room and devices, to expand the adjusting model of air conditioner refrigerating amount It encloses, and improves the stability of refrigeration control.
The embodiment of the present invention provides a kind of refrigeration control method of computer room first, comprising:
The current return air temperature of each indoor unit of reception air-conditioning and current supply air temperature;
When the current return air temperature is not equal to target return air temperature, sent according to target return air temperature and the target of storage The rotation speed of fan of each indoor unit of the compressor air-conditioning of air temperature calibration and the corresponding relationship of compressor rotary speed, adjust blower and turn Speed and compressor rotary speed, so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target Supply air temperature;Alternatively, according to each interior of the target return air temperature of storage and the chilled water air-conditioning of target supply air temperature calibration The rotation speed of fan of machine and the corresponding relationship of water valve aperture, adjust rotation speed of fan and water valve aperture, so that current return air temperature is adjusted To target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
In the technical solution of the present invention, compressor air-conditioning is conventional compressor air-conditioning, including successively by the first pipeline Connection forms compressor, condenser, restricting element and the evaporator of closed cycle, wherein being refrigerant in the first pipeline;And it is cold Freezing water air-conditioning is also conventional chilled water air-conditioning, water valve, condensation including being in turn connected to form closed cycle by the second pipeline Device, restricting element and evaporator, wherein being water in the second pipeline, the principle of refrigeration control method of the invention can be applicable in respectively It in both air-conditionings, is illustrated by taking compressor air-conditioning as an example, according to the target return air temperature of storage and target supply air temperature The corresponding relationship of the rotation speed of fan of each indoor unit of the compressor air-conditioning of calibration and compressor rotary speed adjusts compressor rotary speed And rotation speed of fan, be conducive to the adjustable range for improving air conditioner refrigerating amount, in addition, by adjusting return air temperature come the refrigeration to computer room Demand is regulated and controled, since the variation of return air temperature is relatively slow, it is thus possible to improve the control stability of air-conditioning system.
It in the present invention, can be according to the target return air temperature and target supply air temperature of storage by taking compressor air-conditioning as an example The corresponding relationship of the rotation speed of fan of each indoor unit of the compressor air-conditioning of calibration and compressor rotary speed come adjust rotation speed of fan and Compressor rotary speed, the corresponding relationship can be functional relation, naturally it is also possible to correspond to numerical value for rotation speed of fan and compressor rotary speed List form.The functional relation is preferably the functional relation that rotation speed of fan increases with compressor rotary speed.Similarly, for It is also such for chilled water air-conditioning.
Preferably, the corresponding relationship of the rotation speed of fan of each indoor unit of the compressor air-conditioning and compressor rotary speed is pressure The rotation speed of fan of each indoor unit of contracting air conditioner and the first linear positive function relationship of compressor rotary speed;The chilled water air-conditioning Each indoor unit rotation speed of fan and water valve aperture corresponding relationship be chilled water air-conditioning each indoor unit rotation speed of fan With the second linear positive function relationship of water valve aperture.
In this embodiment, it by taking compressor air-conditioning as an example, is demarcated using target return air temperature and target supply air temperature First linear positive function relationship of the compressor rotary speed of the rotation speed of fan and compressor air-conditioning of each indoor unit of compressor air-conditioning Formula adjusts rotation speed of fan and compressor rotary speed, is in linear positive function relationship when being adjusted due to rotation speed of fan and compressor rotary speed, Therefore expand the adjustable range of air conditioner refrigerating amount while increaseing or decreasing whole refrigeration capacity.
Preferably, the first linear positive letter of the rotation speed of fan of each indoor unit of the compressor air-conditioning and compressor rotary speed Number relationship is N=Kn1+ δ, the rotation speed of fan of each indoor unit of the chilled water air-conditioning and the second linear positive letter of water valve aperture Number relationship is N=Kn2+ δ, wherein N indicates rotation speed of fan percentage, n1Indicate compressor rotary speed percentage, n2Indicate that water valve is opened Percentage is spent, K is positive number and is fixed value, and δ is offset, by the target return air temperature and target supply air temperature of each indoor unit Calibration.
Refrigeration control method of the invention further include:
When the current return air temperature be greater than return air temperature setting value when, control compressor air-conditioning compressor rotary speed and Rotation speed of fan increases according to the first linear positive function relationship, until current return air temperature is equal to target return air temperature and currently Supply air temperature is equal to target supply air temperature;Alternatively, the water valve aperture and rotation speed of fan of control chilled water air-conditioning are according to described second Linear positive function relationship increases, until current return air temperature is equal to target return air temperature and current supply air temperature and blows equal to target Temperature.
Refrigeration control method of the invention, further includes:
When the current return air temperature be less than return air temperature setting value when, control compressor air-conditioning compressor rotary speed and Rotation speed of fan reduces according to the first linear positive function relationship, until current return air temperature is equal to target return air temperature and currently Supply air temperature is equal to target supply air temperature;Alternatively, the water valve aperture and rotation speed of fan of control chilled water air-conditioning are according to described second Linear positive function relationship reduces, until current return air temperature is equal to target return air temperature and current supply air temperature and blows equal to target Temperature.
Preferably, the rotation speed of fan of the target return air temperature of the storage and each indoor unit of target supply air temperature calibration It is obtained with the first linear positive function relationship of the compressor rotary speed of compressor air-conditioning according to interpolation method;The target return air of the storage The rotation speed of fan of each indoor unit of temperature and the chilled water air-conditioning of target supply air temperature calibration and the second main track of water valve aperture Property functional relation is obtained according to interpolation method.
Based on identical inventive concept, the embodiment of the present invention also provides a kind of refrigeration control device of computer room, comprising:
Reception device, for receive each indoor unit of air-conditioning current return air temperature and current supply air temperature;
Adjustment module, for being returned according to the target of storage when the current return air temperature is not equal to target return air temperature Air temperature and the rotation speed of fan of each indoor unit for the compressor air-conditioning that target supply air temperature is demarcated and compressor rotary speed it is corresponding Relationship adjusts rotation speed of fan and compressor rotary speed, so that current return air temperature is adjusted to target return air temperature, so that current air-supply Temperature is adjusted to target supply air temperature;Alternatively, according to the chilled water of the target return air temperature of storage and the calibration of target supply air temperature The rotation speed of fan of each indoor unit of air-conditioning and the corresponding relationship of water valve aperture, adjust rotation speed of fan and water valve aperture, so that working as Preceding return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
Preferably, the adjustment module is specifically used for when the current return air temperature is not equal to target return air temperature, root According to the rotation speed of fan and pressure of each indoor unit of the compressor air-conditioning of target return air temperature and target the supply air temperature calibration of storage First linear positive function relationship of contracting machine revolving speed adjusts rotation speed of fan and compressor rotary speed, so that current return air temperature is adjusted to Target return air temperature, so that current supply air temperature is adjusted to target supply air temperature;Alternatively, according to the target return air temperature of storage with The rotation speed of fan of each indoor unit of the chilled water air-conditioning of target supply air temperature calibration and the second linear positive function of water valve aperture Relationship adjusts rotation speed of fan and water valve aperture, so that current return air temperature is adjusted to target return air temperature, so that current air-supply temperature Degree is adjusted to target supply air temperature.
Preferably, the adjustment module is also used to the control when the current return air temperature is greater than the setting value of return air temperature The compressor rotary speed and rotation speed of fan of compressor air-conditioning processed increase according to the first linear positive function relationship, until current return air Temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature;Alternatively, the water valve of control chilled water air-conditioning Aperture and rotation speed of fan increase according to the second linear positive function relationship, until current return air temperature is equal to target return air temperature And current supply air temperature is equal to target supply air temperature.
Preferably, the adjustment module is also used to the control when the current return air temperature is less than the setting value of return air temperature The compressor rotary speed and rotation speed of fan of compressor air-conditioning processed reduce according to the first linear positive function relationship, until current return air Temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature;Alternatively, the water valve of control chilled water air-conditioning Aperture and rotation speed of fan reduce according to the second linear positive function relationship, until current return air temperature is equal to target return air temperature And current supply air temperature is equal to target supply air temperature.
Detailed description of the invention
Fig. 1 is the division of room structural schematic diagram of existing closing cold passage form;
Fig. 2 is the one embodiment flow diagram of refrigeration control method of computer room of the present invention;
Fig. 3 is the rotation speed of fan of compressor air-conditioning of the present invention and the first linear positive function graph of relation of compressor rotary speed It or is the rotation speed of fan of chilled water air-conditioning of the present invention and the second linear positive function graph of relation of water valve aperture;
Fig. 4 is the flow diagram of another embodiment of the refrigeration control method of computer room of the present invention;
Fig. 5 is one example structure schematic diagram of refrigeration control device of computer room of the invention.
Appended drawing reference:
1- computer room 11- server 12- air-conditioning 13- closes cold passage
21- receiving module 22- adjustment module
Specific embodiment
In order to expand the adjustable range of air conditioner refrigerating amount, and the stability of refrigeration control is improved, the embodiment of the present invention provides A kind of refrigeration control method and device of computer room.In the technical scheme, target return air temperature and target supply air temperature are used The compressor rotary speed (or water valve aperture of chilled water air-conditioning) of the rotation speed of fan and compressor air-conditioning of each indoor unit of calibration Corresponding relationship adjusts rotation speed of fan and compressor rotary speed (or water valve aperture), is conducive to the adjusting model for expanding air conditioner refrigerating amount Enclose, in addition, regulated and controled by adjusting return air temperature come the refrigeration demand amount to computer room, due to return air temperature variation relatively Slowly, it is thus possible to improve the control stability of air-conditioning system.To make the object, technical solutions and advantages of the present invention clearer, Lifting specific embodiment below, the present invention is described in further detail.
Using supply air temperature control model, when computer room thermic load increases, if individually improve rotating speed of air conditioner fan or The revolving speed of compressor of air conditioner and blower is improved simultaneously, although the change direction one of its complete machine refrigeration output trend and computer room thermic load It causes, but is adjusted step-length by air-conditioning draught fan and compressor rotary speed and limited, also the stability of airconditioning control can be made to die down.Such as: When causing supply air temperature to be higher than target value because of computer room thermic load increase, if rotating speed of air conditioner fan is faster than supply air temperature influence Compressor rotary speed on supply air temperature influence, improve rotating speed of air conditioner fan may make air-conditioning system adjust initial stage supply air temperature into One step increases, so that refrigeration demand calculated value and rotation speed of fan form a positive feedback process, and deviates from truth, It can possibly even to occur shaking repeatedly in system adjustment process, and system stability is died down.Although control can be passed through The change step of rotating speed of air conditioner fan and compressor rotary speed processed, so that influence speed of the two to supply air temperature equally solves Problem is stated, but this synchronized relation for influencing speed is more fragile, can become less because environment influences the difference with system Stablize.
In embodiments of the present invention, compressor air-conditioning is conventional compressor air-conditioning, including is successively connected by the first pipeline The compressor to form closed cycle, condenser, restricting element and evaporator are connect, wherein being refrigerant in the first pipeline;And it freezes Water air-conditioning is also conventional chilled water air-conditioning, including be in turn connected to form by the second pipeline the water valve of closed cycle, condenser, Restricting element and evaporator, wherein being water in the second pipeline.Two schemes of refrigeration control method of the invention are directed to respectively adopts With the computer room of different refrigeration control systems, refrigeration control system is respectively compressor air-conditioning and chilled water air-conditioning, in compressor sky In tune, be stored with target return air temperature and target supply air temperature calibration compressor air-conditioning each indoor unit rotation speed of fan with The corresponding relationship of compressor rotary speed adjusts rotation speed of fan and compressor rotary speed when return air temperature is not equal to target return air temperature; In chilled water air-conditioning, it is stored with each indoor unit of the chilled water air-conditioning of target return air temperature and the calibration of target supply air temperature The corresponding relationship of rotation speed of fan and compressor rotary speed, when return air temperature be not equal to target return air temperature when, adjust rotation speed of fan and Water valve aperture.By taking compressor air-conditioning as an example, it is preferred that above-mentioned corresponding relationship can be functional relation, naturally it is also possible to be blower Revolving speed and compressor rotary speed correspond to the form of the list of numerical value.The functional relation be preferably rotation speed of fan with compressor rotary speed and The functional relation of increase.Chilled water air-conditioning is also such.Preferably, the two functional relations are respectively that the first linear positive function is closed System and the second linear positive function relationship.It is following to be illustrated so that computer room is using compressor air-conditioning as an example.
The embodiment of the present invention provides a kind of refrigeration control method of computer room first, as shown in Fig. 2, Fig. 2 is computer room of the present invention One embodiment flow diagram of refrigeration control method, the refrigeration control method includes:
Step 101, receive air-conditioning each indoor unit current return air temperature and current supply air temperature;
Step 102 judges whether current return air temperature is not equal to target return air temperature;If so, thening follow the steps 103; Otherwise, return step 101;
Each room of step 103, the compressor air-conditioning demarcated according to the target return air temperature and target supply air temperature of storage The rotation speed of fan of interior machine and the corresponding relationship of compressor rotary speed adjust rotation speed of fan and compressor rotary speed, so that current return air temperature Degree is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
In the technical solution of the present invention, compressor rotary speed is adjusted according to the corresponding relationship of compressor rotary speed and rotation speed of fan And rotation speed of fan, be conducive to the adjustable range for improving air conditioner refrigerating amount, in addition, by adjusting return air temperature come the refrigeration to computer room Demand is regulated and controled, since the variation of return air temperature is relatively slow, it is thus possible to improve the control stability of air-conditioning system.
It in the present invention, can be according to the target return air temperature and target supply air temperature of storage by taking compressor air-conditioning as an example The functional relation of the rotation speed of fan of each indoor unit of the compressor air-conditioning of calibration and compressor rotary speed come adjust rotation speed of fan and Compressor rotary speed.The functional relation is preferably the functional relation that rotation speed of fan increases with compressor rotary speed.Similarly, for cold It is also such for freezing for water air-conditioning.
When not using compressor air-conditioning in computer room and use chilled water air-conditioning, step 101 and step 102 are constant, it is only necessary to Step 103 is changed to the control strategy of chilled water air-conditioning, i.e., is demarcated according to the target return air temperature of storage and target supply air temperature Chilled water air-conditioning each indoor unit rotation speed of fan and water valve aperture corresponding relationship, adjust rotation speed of fan and water valve and open Degree, so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
Preferably, in step 103, the rotation speed of fan of each indoor unit of compressor air-conditioning is corresponding with compressor rotary speed Relationship is specially the first main track of the rotation speed of fan of each indoor unit of compressor air-conditioning and the compressor rotary speed of compressor air-conditioning Property functional relation.In this embodiment, when air-conditioning is chilled water air-conditioning, only become in step 103 for chilled water air-conditioning The content of water valve aperture regulation, i.e., the chilled water air-conditioning demarcated according to the target return air temperature of storage and target supply air temperature it is every The rotation speed of fan of a indoor unit and the second linear positive function relationship of water valve aperture, adjust rotation speed of fan and water valve aperture, so that Current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
In the technical solution of the present invention, each indoor unit demarcated using target return air temperature and target supply air temperature First linear positive function relational expression of rotation speed of fan and compressor rotary speed adjusts rotation speed of fan and compressor rotary speed, due to blower Revolving speed and compressor rotary speed are in linear positive function relationship when adjusting, therefore expand sky while increaseing or decreasing whole refrigeration capacity The adjustable range of cooling capacity is modulated, in addition, regulating and controlling by adjusting return air temperature come the refrigeration demand amount to computer room, due to return air The variation of temperature is relatively slow, it is thus possible to improve the control stability of air-conditioning system.
In the present invention, the linear positive function relationship be not limited to Y=kx+b (wherein x be independent variable, Y is dependent variable, K and b is constant) form, as long as the trend that increases with the increase of independent variable of dependent variable, example is presented in functional relation Such as, linear positive function relationship can be at least two sections of piecewise function, every section of function of piecewise function show as dependent variable with The increase of independent variable and increase, in addition, the functional value of the waypoint of piecewise function can also have jump.
Preferably, the first linear positive letter of the rotation speed of fan of each indoor unit of the compressor air-conditioning and compressor rotary speed Number relationship is N=Kn1+ δ, the rotation speed of fan of each indoor unit of the chilled water air-conditioning and the second linear positive letter of water valve aperture Number relationship is N=Kn2+ δ, wherein N indicates rotation speed of fan percentage, n1Indicate compressor rotary speed percentage, n2Indicate that water valve is opened Percentage is spent, K is positive number and is fixed value, and δ is offset, by the target return air temperature and target supply air temperature of each indoor unit Calibration.As shown in figure 3, Fig. 3 is that the rotation speed of fan of compressor air-conditioning of the present invention and the first linear positive function of compressor rotary speed are closed It is curve graph, certainly, curve graph shown in Fig. 3 can also indicate the rotation speed of fan and water valve aperture of chilled water air-conditioning of the present invention Second linear positive function graph of relation, only abscissa becomes water valve aperture, and rotation speed of fan can use rotation speed of fan hundred Divide ratio to replace, rotation speed of fan percentage is current rotation speed of fan divided by blower maximum (top) speed, and compressor rotary speed can be using pressure Contracting machine revolving speed percentage replaces, and compressor rotary speed percentage is current compressor revolving speed divided by compressor maximum (top) speed, water valve Aperture can be replaced using water valve percent travel, and water valve percent travel is that current water valve aperture is opened divided by water valve maximum Degree, in N=Kn1+ δ and N=Kn2In+δ, Proportional coefficient K is fixed value, is equal to tan α, only related to the configuration of specific air-conditioner set, With N=Kn1It is illustrated for+δ, the target return air temperature T of each setting of correspondence as shown in Figure 3It returnsWith target supply air temperature TIt sendThe N=Kn of calibration1Slope of a curve K shown in+δ is identical;In N=Kn1In+δ, offset delta is according to multiple groups target return air temperature TIt returnsWith target supply air temperature TIt sendTest data interpolation determines.When the variation of computer room thermic load, if air-conditioning draught fan and compressor turn COEFFICIENT K changes speed jointly according to a certain percentage, when air conditioner refrigerating output and after computer room heat load balance, air-conditioning return air temperature and send Air temperature can be with its initial value approximate constant.Therefore, tangible when needing to set the target supply air temperature of air-conditioning as A In control logic corresponding control object be with the associated target return air temperature R of A, and the refrigeration demand of air-conditioning is by return air temperature Difference between actual value r and target return air temperature R determines.According in refrigeration demand adjustment process, as long as air-conditioning draught fan turns Fast percentage N and compressor rotary speed percentage n are according to relational expression N=n1× K+ δ variation, when the actual value r of return air temperature is controlled To after target return air temperature R, then illustrate that supply air temperature actual value a will also be adjusted to target supply air temperature A automatically.For difference Target supply air temperature and target return air temperature, corresponding curve can be calibrated, such as curve a plurality of in Fig. 3.Air-conditioning according to When refrigeration demand is adjusted, as long as its blower and compressor rotary speed meet above-mentioned new corresponding relationship N=n1× K+ δ 1, when return air temperature After degree is controlled and is stabilized to new setting value R1, supply air temperature will also be adjusted to new target value A1 automatically.As a result, in sky In the range of operation of adjusting system, as long as setting supply air temperature as some target value, air-conditioning can find out the corresponding song of storage Then line adjusts compressor rotary speed and rotation speed of fan according to above-mentioned curve automatic running, and is stabilized to target supply air temperature, finally Realize above-mentioned control function.It similarly, can also be by above-mentioned acquisition the second linear positive function relationship N=in chilled water air-conditioning Kn2+ δ, and chilled water air-conditioning is adjusted according to the formula, to realize that return air temperature is equal to target return air temperature and air-supply temperature Degree is equal to target supply air temperature.
In compressor air-conditioning, refrigeration control method of the invention further include:
When the current return air temperature be greater than return air temperature setting value when, control compressor air-conditioning compressor rotary speed and Rotation speed of fan increases according to the first linear positive function relationship, until current return air temperature is equal to target return air temperature and currently Supply air temperature is equal to target supply air temperature.It is similar with the embodiment, in chilled water air-conditioning, refrigeration control method of the invention Further include:
When the current return air temperature is greater than the setting value of return air temperature, the water valve aperture and wind of chilled water air-conditioning are controlled Machine revolving speed increases according to the second linear positive function relationship, until current return air temperature is equal to target return air temperature and currently send Air temperature is equal to target supply air temperature.
In compressor air-conditioning, refrigeration control method of the invention, further includes:
When the current return air temperature is less than the setting value of return air temperature, the compressor rotary speed and blower for controlling air-conditioning turn Speed reduces according to the linear positive function relationship, until current return air temperature is equal to target return air temperature and current supply air temperature etc. In target supply air temperature.It is similar with the embodiment, in chilled water air-conditioning, refrigeration control method of the invention further include:
When the current return air temperature is less than the setting value of return air temperature, the water valve aperture and wind of chilled water air-conditioning are controlled Machine revolving speed reduces according to the second linear positive function relationship, until current return air temperature is equal to target return air temperature and currently send Air temperature is equal to target supply air temperature.
Preferably, the rotation speed of fan of the target return air temperature of the storage and each indoor unit of target supply air temperature calibration It is obtained with the first linear positive function relationship of the compressor rotary speed of compressor air-conditioning according to interpolation method;The target return air of the storage The rotation speed of fan of each indoor unit of temperature and the chilled water air-conditioning of target supply air temperature calibration and the second main track of water valve aperture Property functional relation is obtained according to interpolation method.
A specific embodiment is exemplified below to illustrate refrigeration control method of the invention, also using compressor air-conditioning as It is illustrated for the refrigeration control system of computer room, as shown in figure 4, Fig. 4 is the another of the refrigeration control method of computer room of the present invention The flow diagram of embodiment, the refrigeration control method include:
Step 201, receive air-conditioning each indoor unit current return air temperature and current supply air temperature;
Step 202 judges whether current return air temperature is not equal to target return air temperature;If so, thening follow the steps 203; Otherwise, return step 201;
Step 203 judges whether current return air temperature is greater than target return air temperature;If so, 204 are thened follow the steps, it is no Then, step 205 is executed;
Step 204, the compressor rotary speed for controlling compressor air-conditioning and rotation speed of fan are closed according to first linear positive function System increases, until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature.
Step 205, the compressor rotary speed for controlling air-conditioning and rotation speed of fan reduce according to the first linear positive function relationship, Until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature.
Based on identical inventive concept, the embodiment of the present invention also provides a kind of refrigeration control device of computer room, the system of computer room Cold control device is also divided into the refrigeration control device and chilled water air-conditioning of compressor air-conditioning according to the difference of refrigeration control system Refrigeration control device, it is following to be illustrated by taking compressor air-conditioning as an example, as shown in figure 5, Fig. 5 is the refrigeration control of computer room of the invention One example structure schematic diagram of device processed, the refrigeration control device include:
Reception device 21, for receive each indoor unit of air-conditioning current return air temperature and current supply air temperature;
Adjustment module 22 is used for when the current return air temperature is not equal to target return air temperature, according to the target of storage The rotation speed of fan of each indoor unit of return air temperature and the compressor air-conditioning of target supply air temperature calibration and pair of compressor rotary speed It should be related to, adjust rotation speed of fan and compressor rotary speed, so that current return air temperature is adjusted to target return air temperature, so that currently sending Air temperature is adjusted to target supply air temperature.In this embodiment, according to chilled water air-conditioning, then adjustment module 22 is needed for cold The water valve aperture for freezing water air-conditioning is adjusted, i.e., according to the chilled water of the target return air temperature of storage and the calibration of target supply air temperature The rotation speed of fan of each indoor unit of air-conditioning and the corresponding relationship of water valve aperture, adjust rotation speed of fan and water valve aperture, so that working as Preceding return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
Preferably, adjustment module 22 are demarcated specifically for the target return air temperature and target supply air temperature according to storage The rotation speed of fan of each indoor unit of compressor air-conditioning and the first linear positive function relational expression of compressor rotary speed adjust blower and turn Speed and compressor rotary speed, so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target Supply air temperature.In this embodiment, according to chilled water air-conditioning, then adjustment module 22 needs the water valve for chilled water air-conditioning to open Degree is adjusted, i.e., adjustment module 22 is used for when the current return air temperature is not equal to target return air temperature, according to storage The rotation speed of fan of each indoor unit of target return air temperature and the chilled water air-conditioning of target supply air temperature calibration and water valve aperture Second linear positive function relationship adjusts rotation speed of fan and water valve aperture, so that current return air temperature is adjusted to target return air temperature, So that current supply air temperature is adjusted to target supply air temperature.
Please continue to refer to shown in Fig. 5, in compressor air-conditioning system, it is preferred that adjustment module 22 is also used to work as when described When preceding return air temperature is greater than the setting value of return air temperature, the compressor rotary speed and rotation speed of fan for controlling compressor air-conditioning are according to First linear positive function relationship increases, until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target Supply air temperature.In chilled water air-conditioning, it is preferred that adjustment module 22 is also used to be greater than return air temperature when the current return air temperature Setting value when, control chilled water air-conditioning water valve aperture and rotation speed of fan increased according to the second linear positive function relationship, Until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature.
Please continue to refer to shown in Fig. 5, in compressor air-conditioning system, it is preferred that adjustment module 22 is also used to work as when described When preceding return air temperature is less than the setting value of return air temperature, the compressor rotary speed and rotation speed of fan for controlling compressor air-conditioning are according to First linear positive function relationship reduces, until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target Supply air temperature.In freezing water air-conditioning system, it is preferred that adjustment module 22 is also used to be less than return air when the current return air temperature When the setting value of temperature, the water valve aperture and rotation speed of fan for controlling chilled water air-conditioning subtract according to the second linear positive function relationship It is small, until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature.
In air-conditioning system of the technical solution of the present invention particularly suitable for closing cold passage.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (10)

1. a kind of refrigeration control method of computer room characterized by comprising
The current return air temperature of each indoor unit of reception air-conditioning and current supply air temperature;
When the current return air temperature is not equal to target return air temperature, blown according to the target return air temperature of storage and target warm The rotation speed of fan of each indoor unit of the fixed compressor air-conditioning of scale and the corresponding relationship of compressor rotary speed, adjust rotation speed of fan and Compressor rotary speed, so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target air-supply Temperature;Alternatively, according to each indoor unit of the target return air temperature of storage and the chilled water air-conditioning of target supply air temperature calibration The corresponding relationship of rotation speed of fan and water valve aperture adjusts rotation speed of fan and water valve aperture, so that current return air temperature is adjusted to mesh Return air temperature is marked, so that current supply air temperature is adjusted to target supply air temperature.
2. refrigeration control method as described in claim 1, which is characterized in that the wind of each indoor unit of the compressor air-conditioning The corresponding relationship of machine revolving speed and compressor rotary speed is the rotation speed of fan and compressor rotary speed of each indoor unit of compressor air-conditioning First linear positive function relationship;The rotation speed of fan of each indoor unit of the chilled water air-conditioning and the corresponding relationship of water valve aperture are The rotation speed of fan of each indoor unit of chilled water air-conditioning and the second linear positive function relationship of water valve aperture.
3. refrigeration control method as claimed in claim 2, which is characterized in that the wind of each indoor unit of the compressor air-conditioning First linear positive function relationship of machine revolving speed and compressor rotary speed is N=Kn1+ δ, each indoor unit of the chilled water air-conditioning Second linear positive function relationship of rotation speed of fan and water valve aperture is N=Kn2+ δ, wherein N indicates rotation speed of fan percentage, n1Table Show compressor rotary speed percentage, n2Indicate water valve percent travel, K is positive number and is fixed value, and δ is offset, by each room The target return air temperature and target supply air temperature of interior machine are demarcated.
4. refrigeration control method as claimed in claim 2 or claim 3, which is characterized in that further include:
When the current return air temperature is greater than the setting value of return air temperature, the compressor rotary speed and blower of compressor air-conditioning are controlled Revolving speed increases according to the first linear positive function relationship, until current return air temperature is equal to target return air temperature and current air-supply Temperature is equal to target supply air temperature;Alternatively, the water valve aperture and rotation speed of fan of control chilled water air-conditioning are according to second main track Property functional relation increase, until current return air temperature is equal to target return air temperature and current supply air temperature and is equal to target air-supply temperature Degree.
5. refrigeration control method as claimed in claim 2 or claim 3, which is characterized in that further include:
When the current return air temperature is less than the setting value of return air temperature, the compressor rotary speed and blower of compressor air-conditioning are controlled Revolving speed reduces according to the first linear positive function relationship, until current return air temperature is equal to target return air temperature and current air-supply Temperature is equal to target supply air temperature;Alternatively, the water valve aperture and rotation speed of fan of control chilled water air-conditioning are according to second main track Property functional relation reduce, until current return air temperature is equal to target return air temperature and current supply air temperature and is equal to target air-supply temperature Degree.
6. refrigeration control method as claimed in claim 2 or claim 3, which is characterized in that the target return air temperature and mesh of the storage The rotation speed of fan of each indoor unit of supply air temperature calibration and the first linear positive function relationship of compressor rotary speed are marked according to interpolation Method obtains;The blower of each indoor unit of the chilled water air-conditioning of target return air temperature and target the supply air temperature calibration of the storage Revolving speed and the second linear positive function relationship of water valve aperture are obtained according to interpolation method.
7. a kind of refrigeration control device of computer room characterized by comprising
Reception device, for receive each indoor unit of air-conditioning current return air temperature and current supply air temperature;
Adjustment module is used for when the current return air temperature is not equal to target return air temperature, according to the target return air temperature of storage Degree and the rotation speed of fan of each indoor unit of the compressor air-conditioning of target supply air temperature calibration and the corresponding relationship of compressor rotary speed, Rotation speed of fan and compressor rotary speed are adjusted, so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature It is adjusted to target supply air temperature;Alternatively, according to the chilled water air-conditioning of the target return air temperature of storage and the calibration of target supply air temperature Each indoor unit rotation speed of fan and water valve aperture corresponding relationship, rotation speed of fan and water valve aperture are adjusted, so that current return Air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
8. refrigeration control device as claimed in claim 7, which is characterized in that the adjustment module, specifically for working as when described When preceding return air temperature is not equal to target return air temperature, according to the compression of the target return air temperature of storage and the calibration of target supply air temperature The rotation speed of fan of each indoor unit of air conditioner and the first linear positive function relationship of compressor rotary speed adjust rotation speed of fan and pressure Contracting machine revolving speed, so that current return air temperature is adjusted to target return air temperature, so that current supply air temperature is adjusted to target air-supply temperature Degree;Alternatively, according to the wind of the target return air temperature of storage and each indoor unit of the chilled water air-conditioning of target supply air temperature calibration Second linear positive function relationship of machine revolving speed and water valve aperture adjusts rotation speed of fan and water valve aperture, so that current return air temperature It is adjusted to target return air temperature, so that current supply air temperature is adjusted to target supply air temperature.
9. refrigeration control device as claimed in claim 8, which is characterized in that the adjustment module is also used to when described current time When air temperature is greater than the setting value of return air temperature, the compressor rotary speed and rotation speed of fan for controlling compressor air-conditioning are according to described first Linear positive function relationship increases, until current return air temperature is equal to target return air temperature and current supply air temperature and blows equal to target Temperature;Alternatively, the water valve aperture and rotation speed of fan of control chilled water air-conditioning increase according to the second linear positive function relationship, directly It is equal to target return air temperature to current return air temperature and current supply air temperature is equal to target supply air temperature.
10. refrigeration control device as claimed in claim 8, which is characterized in that the adjustment module is also used to when described current When return air temperature is less than the setting value of return air temperature, the compressor rotary speed and rotation speed of fan for controlling compressor air-conditioning are according to described the One linear positive function relationship reduces, until current return air temperature is equal to target return air temperature and current supply air temperature is sent equal to target Air temperature;Alternatively, the water valve aperture and rotation speed of fan of control chilled water air-conditioning reduce according to the second linear positive function relationship, Until current return air temperature is equal to target return air temperature and current supply air temperature is equal to target supply air temperature.
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